US20070068193A1 - Refrigerator and method for controlling operation of the same - Google Patents
Refrigerator and method for controlling operation of the same Download PDFInfo
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- US20070068193A1 US20070068193A1 US11/522,401 US52240106A US2007068193A1 US 20070068193 A1 US20070068193 A1 US 20070068193A1 US 52240106 A US52240106 A US 52240106A US 2007068193 A1 US2007068193 A1 US 2007068193A1
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- Prior art keywords
- storage compartment
- storage
- refrigerant tube
- evaporator
- temperature
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B5/00—Compression machines, plants or systems, with several evaporator circuits, e.g. for varying refrigerating capacity
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D23/00—General constructional features
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B41/00—Fluid-circulation arrangements
- F25B41/30—Expansion means; Dispositions thereof
- F25B41/385—Dispositions with two or more expansion means arranged in parallel on a refrigerant line leading to the same evaporator
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B41/00—Fluid-circulation arrangements
- F25B41/30—Expansion means; Dispositions thereof
- F25B41/39—Dispositions with two or more expansion means arranged in series, i.e. multi-stage expansion, on a refrigerant line leading to the same evaporator
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D11/00—Self-contained movable devices, e.g. domestic refrigerators
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D29/00—Arrangement or mounting of control or safety devices
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B2600/00—Control issues
- F25B2600/02—Compressor control
- F25B2600/025—Compressor control by controlling speed
- F25B2600/0251—Compressor control by controlling speed with on-off operation
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B2600/00—Control issues
- F25B2600/25—Control of valves
- F25B2600/2511—Evaporator distribution valves
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D11/00—Self-contained movable devices, e.g. domestic refrigerators
- F25D11/02—Self-contained movable devices, e.g. domestic refrigerators with cooling compartments at different temperatures
- F25D11/022—Self-contained movable devices, e.g. domestic refrigerators with cooling compartments at different temperatures with two or more evaporators
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D2700/00—Means for sensing or measuring; Sensors therefor
- F25D2700/12—Sensors measuring the inside temperature
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B40/00—Technologies aiming at improving the efficiency of home appliances, e.g. induction cooking or efficient technologies for refrigerators, freezers or dish washers
Definitions
- the present invention relates to a refrigerator and a method for controlling an operation of the same, and more particularly, to a refrigerator including two storage compartments with preset storage temperatures which differ from each other and two evaporators provided corresponding to the respective storage compartments, and a method for controlling an operation of the same.
- the refrigerator is an apparatus for storing food at a lower temperature and includes a refrigerating compartment in which the food is stored at a temperature that is above a freezing temperature; a freezing compartment in which the food is stored at a temperature that is below a freezing temperature; doors to open and close the refrigerating compartment and the freezing compartment; and a refrigerating system to cool the refrigerating compartment and the freezing compartment.
- the refrigerating system includes a compressor, a condenser, a decompressing unit and an evaporator.
- a compressor a condenser
- a decompressing unit a decompressing unit
- FIG. 1 shows one example of the independent cooling type refrigerating system including the refrigerating compartment provided with the independent evaporator and the freezing compartment provided with the independent evaporator.
- the refrigerating system 101 of the conventional refrigerator includes a compressor 111 ; a condenser 112 ; decompressing units 161 , 162 and 163 ; a first evaporator 141 provided corresponding to a first storage compartment 140 having a relatively high temperature and a second evaporator 151 provided corresponding to a second storage compartment 150 having a relatively low temperature; a main refrigerant tube 171 connecting sequentially the above members in series; a branch refrigerant tube 175 diverged from a front end of the first evaporator 141 and connected to a front end of the second evaporator 151 ; and a three-way valve 180 provided at a diverging point of the branch refrigerant tube 175 and opening and closing selectively the main refrigerant tube 171 and the branch refrigerant tube 175 .
- the main refrigerant tube 171 is opened and the branch refrigerant tube 175 is closed to make the refrigerant circulate in the compressor 111 -the condenser 112 -the 3-way valve 180 -the first decompressing unit 161 -the first evaporator 141 -the second decompressing unit 162 -the second evaporator 151 -the compressor 111 in order.
- the main refrigerant tube 171 is closed and the branch refrigerant tube 175 is opened to make the refrigerant circulate in the compressor 111 -the condenser 112 -the second decompressing unit 162 -the second evaporator 151 -the compressor 111 in order.
- the conventional refrigerator has the drawback that, since the 3-way valve 180 is provided at a diverging point, the 3-way valve 180 should be always controlled in a case of refrigerating the first and second storage compartments 140 and 150 as well as a case of refrigerating only the second storage compartment 150 .
- a refrigerator having a main body in which a first storage compartment and a second storage compartment having different preset storage temperatures are formed, and a compressor and a condenser for refrigerating each storage compartment
- the refrigerator including: first and second evaporators corresponding to the first storage compartment and the second storage compartment, respectively; a main refrigerant tube connecting sequentially the compressor, the condenser and the first and second evaporators in series; a second refrigerant tube diverged from the first refrigerant tube at a front end of the first evaporator and connected to a front end of the second evaporator; and a 2-way switching valve disposed between a diverging point of the second refrigerant tube and the first evaporator and to close/to open the main refrigerant tube.
- the refrigerator further includes an inside temperature sensor for sensing an inside temperature of the first storage compartment; and a control unit to control the 2-way switching valve such that the switching valve closes the main refrigerant tube when the inside temperature of the first storage compartment sensed by the inside temperature sensor reaches the preset storage temperature.
- the preset storage temperature of the first storage compartment is higher than the preset storage temperature of the second storage compartment.
- the refrigerator further includes a first decompressing unit disposed between the 2-way switching valve and the first evaporator and a second decompressing unit disposed between the branch point and the second evaporator.
- the refrigerator further includes a third decompressing unit disposed between the first evaporator and the second evaporator.
- another aspect of the present invention can be achieved by providing a method for controlling an operation of a refrigerator including a main body in which a first storage compartment and a second storage compartment are formed, and a compressor and a condenser for refrigerating each storage compartment, the method including: diverging a branch refrigerant tube from a main refrigerant tube, which connects sequentially the compressor, the condenser and first and second evaporators corresponding to the first and second storage compartments, at an front end of the first evaporator, the second refrigerant tube being connected the second evaporator; presetting storage temperatures of the first and second storage compartments such that a preset storage temperature of the first storage compartment is higher than a preset storage temperature of the second storage compartment; driving the compressor to perform a refrigerating operation; opening a 2-way switching valve disposed between a diverging point of the second refrigerant tube and the first evaporator; sensing an inside temperature of the first storage compartment; and closing the switching valve when the sensed inside temperature
- the method for controlling an operation of refrigerator further includes: sensing the inside temperature of the second storage compartment; and halting an operation of the compressor when the sensed inside temperature of the second storage compartment reaches the preset storage temperature.
- a refrigerator having a main body in which n storage compartments having different preset storage temperatures, and a compressor and a condenser for refrigerating each storage compartment, including: n evaporators corresponding to n storage compartments, respectively; a main refrigerant tube connecting sequentially the compressor, the condenser and the n evaporators in series; n ⁇ 1 branch refrigerant tubes diverged from the main refrigerant tube at a front end of the first evaporator and connected to a front end of any one of n ⁇ 1 evaporators; and except the first one a n-way valve disposed at a rear side of a diverging point of the branch refrigerant tube connected to a front end of the evaporator, which corresponds to the storage compartment having a lowest preset storage temperature, among n ⁇ 1 evaporators except the first evaporator, and closing/opening the main refrigerant tube and the other n ⁇ 2 branch
- the refrigerator further includes n inside temperature sensors to sense inside temperatures of the n storage compartments; and a control unit to control the n-way valve according to a sensed each inside temperature sensor so as to prevent an inflow of the refrigerant into the evaporator corresponding to the storage compartment reaching the preset storage temperature.
- the n is 3 (three).
- FIG. 1 is a view showing a configuration of a refrigerating system of the conventional refrigerator
- FIG. 2 is a view showing a configuration of a refrigerating system of the refrigerator according to an aspect of the present invention
- FIG. 3 is a flow chart for illustrating a method for controlling an operation of the refrigerator according to an aspect of the present invention.
- FIG. 4 is a table showing the comparison result of the performances of the refrigerating systems of FIG. 1 and FIG. 2 .
- a refrigerator includes a main body (not shown) in which first and second storage compartments 40 and 50 are formed; a compressor 11 and a condenser 12 to refrigerate the first and second storage compartments 40 and 50 ; a first evaporator 41 corresponding to the first storage compartment 40 and a second evaporator 51 corresponding to the second storage compartment 50 ; a main refrigerant tube 71 connecting sequentially the compressor 11 , the condenser 12 , the first and second evaporators 41 and 51 in series; a branch refrigerant tube 75 ; and a switching valve 80 .
- the refrigerator can further include inside temperature sensors 45 and 55 to sense inside temperatures of the first and second storage compartments 40 and 50 , respectively, and a control unit (not shown) to control the 2-way switching valve 80 according to the sensed inside temperatures of the first and second storage compartments 40 and 50 .
- a main body (not shown) of the refrigerator is partitioned to provide the storage compartments 40 and 50 to store food.
- the number of the storage compartments can be varied.
- the storage temperatures of the storage compartments 40 and 50 can be preset to differ from each other.
- the refrigerator including two storage compartments 40 and 50 in which the preset storage temperatures differ from each other is described as the example.
- the below description is made on the assumption that the storage temperature of the first storage compartment 40 is preset to be higher than the preset storage temperature of the second storage compartment 50 .
- the refrigerating system 1 includes the compressor 11 for raising the pressure of a refrigerant; the condenser 12 to condense the refrigerant compressed in the compressor 11 ; decompressing units 61 , 62 and 63 to reduce a pressure of the condensed refrigerant; and the first and second evaporators 41 and 51 .
- the evaporators 41 and 51 corresponding to the storage compartments 40 and 50 , respectively. While refrigerant is evaporated, the refrigerant absorbs heat around the evaporators 41 and 51 , thereby cooling air.
- the evaporators 41 and 51 can differ in an evaporating capability from each other according to different preset storage temperature of the storage compartments 40 and 50 . For example, if the storage temperature of the second storage compartment 50 is preset to be lower than the preset storage temperature of the first storage compartment 40 , the second evaporator 51 can be provided to have the evaporating capability higher than that of the first evaporator 41 . Cooling air produced in the evaporators 41 and 51 is supplied to the storage compartments 40 and 50 through cooling fans 43 and 53 provided corresponding to the evaporators 41 and 51 , respectively.
- the decompressing units 61 , 62 and 63 reduce the pressure of the condensed refrigerant to be supplied to the evaporators 41 and 51 .
- capillary tubes or expansion valves can be provided as the decompressing units 61 , 62 and 63 .
- a plurality of the decompressing units 61 , 62 and 63 can be disposed between the condenser 12 and one of the evaporators 41 and 51 and between the evaporators 41 and 51 .
- the decompressing units 61 , 62 and 63 can be different in resistance from each other.
- Each evaporating capability of the decompressing units 61 , 62 and 63 is in proportion to the resistance thereof.
- a flow rate of the refrigerant can be distributed by disposing properly the decompressing units 61 , 62 and 63 having the resistances which differ from each other.
- the main refrigerant tube 71 forms a closed circuit of connecting sequentially the compressor 11 , the condenser 12 , the decompressing units 61 , 62 and 63 and the first and second evaporators 41 and 51 in series, and so the refrigerant is flowed in the above order.
- the order of the evaporators 41 and 51 connected in series to the main refrigerant tube 71 is determined according to the preset storage temperatures of the storage compartments 40 and 50 corresponding thereto. For example, the evaporators 41 and 51 are connected in series in descending order of the preset storage temperatures of the storage compartments 40 and 50 .
- the first storage compartment 40 having a higher preset storage temperature first reaches the preset storage temperature.
- the refrigerant is flowed in the branch refrigerant tube 75 by closing the main refrigerant tube 71 , and so only the second storage compartment 50 can be refrigerated selectively.
- the branch refrigerant tube 75 is diverged between the condenser 12 and the first evaporator 41 , and connected to a front end of the second evaporator 51 .
- the branch refrigerant tube 75 bypasses the first evaporator 41 , and so the refrigerant flowed in the branch refrigerant tube 75 can enter only the second evaporator 51 .
- no valve for controlling a flow of the refrigerant to the branch refrigerant tube 75 can be provided on the branch refrigerant tube 75 .
- the 2-way switching valve 80 disposed between a diverging point of the branch refrigerant tube 75 and the first evaporator 41 to open/close the main refrigerant tube 71 .
- the 2-way switching valve 80 can be provided to open/close completely the main refrigerant tube 71 or to adjust a flow rate of the refrigerant flowed in the main refrigerant tube 71 .
- the user can operate manually the switching valve 80 or the switching valve can be controlled by a control unit ( 80 ).
- the inside temperature sensors 45 and 55 are provided to sense the inside temperatures of the first and second storage compartments 40 and 50 .
- two inside temperature sensors that is, the first inside temperature sensor 45 and the second inside temperature sensor 55 can be provided.
- three or more inside temperature sensors can be provided. Information about the inside temperatures of the storage compartments 40 and 50 sensed by the inside temperature sensors 45 and 55 is transmitted to the control unit 90 .
- the control unit ( 90 ) is disposed in the main body and compares the inside temperature of the first storage compartment 40 sensed by the first inside temperature sensor 45 with the preset storage temperature for the first storage compartment 40 . Once the sensed inside temperature reaches the preset storage temperature, the control unit controls the 2-way switching valve 80 so as to prevent the refrigerant from flowing into the first evaporator 41 . On the other hand, once the inside temperature of the second storage compartment 50 sensed by the second inside temperature sensor 55 reaches the preset storage temperature for the second storage compartment, the control unit 90 can halt an operation of the compressor 11 .
- the refrigerator is provided with two storage compartments 40 and 50 and corresponding two evaporators 41 and 51 .
- the present invention is applicable to the refrigerator in which n (where, n is 3 or more) storage compartments are formed.
- the refrigerator includes n storage compartments formed in the main body, n evaporators one-to-one corresponding to the storage compartments, the main refrigerant tube 71 connecting the n evaporators in series and n ⁇ 1 branch refrigerant tubes 75 diverged from the main refrigerant tube at a front end of the first one of the n evaporators which are connected to each other in series and connected to an front end of any one of n ⁇ 1 evaporators except the first one.
- An n-way valve is positioned at a rear side of a diverging point of the branch refrigerant tube 75 connected to a front end of the evaporator corresponding to the storage compartment having a lowest preset storage temperature.
- the n-way valve is provided at a rear side of a diverging point of the branch refrigerant tube 75 connected to a front end of the last evaporator.
- the 3-way valve is disposed at a rear side of a diverging point of the second branch refrigerant tube connected to a front end of the third evaporator to open and close the main refrigerant tube and the first branch refrigerant tube.
- the refrigerator includes the first and second storage compartments 40 and 50 formed therein; the first evaporator 41 corresponding to the first storage compartment 40 and the second evaporator 51 corresponding to the second storage compartment 50 ; the main refrigerant tube 71 to which the first and second evaporators 41 and 51 are connected sequentially in series; the branch refrigerant tube 75 diverged from the main refrigerant tube at a front end of the first evaporator 41 and connected to a front end of the second evaporator 51 ; and the 2-way switching valve 80 disposed between a diverging point of the branch refrigerant tube 75 and the first evaporator 41 .
- the storage temperatures of the first storage compartment 40 and the second storage compartment 50 are preset.
- the storage compartment 40 can have the preset storage temperature which differs from that of the second storage compartment 50 .
- the storage temperatures can be preset such that the preset storage temperature T 1 of the first storage compartment 40 is higher than the preset storage temperature T 2 (T 1 >T 2 ) of the second storage compartment 50 at operation S 11 .
- the compressor 11 is driven to refrigerate the first and second storage compartments 40 and 50 at operation S 12 , and the inside temperatures of the first and second storage compartments 40 and 50 are sensed by the inside temperature sensors 45 and 55 at operation S 13 .
- the 2-way switching valve 80 is opened so as to allow the refrigerant to flow sequentially in the first evaporator 41 and the second evaporator 51 through the main refrigerant tube 71 at operation S 14 .
- both the main refrigerant tube 71 and the branch refrigerant tube 75 become opened, and so the refrigerant passed through the condenser 12 can be flowed into both the main refrigerant tube 71 and the branch refrigerant tube 75 .
- the resistance of the second decompressing unit 62 disposed on the branch refrigerant tube 75 is larger than the sum of the resistances of the first and third decompressing units 61 and 63 disposed on the main refrigerant tube 71 , it is possible to make a greater deal of the refrigerant flow into the main refrigerant tube 71 .
- the control unit 90 compares the inside temperature of the first storage compartment 40 sensed by the first inside temperature sensor 45 with the preset storage temperature of the first storage compartment 40 at operation S 15 . If the inside temperature of the first storage compartment 40 reaches the preset storage temperature of the first storage compartment, the control unit closes the switching valve 80 at operation S 16 so as to prevent an inflow of the refrigerant into the first evaporator 41 . Therefore, the refrigerant is directly flowed to the second evaporator 51 through the branch refrigerant tube 75 .
- the control unit 90 halts the operation of the compressor 11 to stop the refrigerating operation at operation S 18 .
- FIG. 4 is a table showing the comparison result of the performances of the conventional refrigerating system shown in FIG. 1 and the refrigerating system according to an aspect of the present invention shown in FIG. 2 .
- the results shown in FIG. 4 is obtained after the refrigerating operation is performed under the condition of an external temperature of 32° C., a humidity of 75%, a preset storage temperature of the second storage compartment of ⁇ 20° C. and a preset storage temperature of the first storage compartment 40 of 1°C.
- the operation ratio refers to a proportion of the time for which the compressor 11 is driven to the reference time for which the refrigerating operation is performed. It is known from table shown in FIG. 4 that the operation ratio obtained by using only the switching valve 80 is substantially same as that obtained by using the three-way valve and there is no difference in the power consumption between the case of using the 2-way switching valve and the case of using the three-way valve.
- the refrigerator and the method to control an operation of the same can refrigerate selectively the first storage compartment 40 or the second storage compartment 50 by the 2-way switching valve 80 provided between a diverging point and the first evaporator 41 without using the three-way valve.
- the refrigerator and the method to control an operation of the same according to the present invention as described above, by using only the switching valve disposed at the main refrigerant tube, the operation effect of the refrigerator such as an operation of the refrigerating compartment under high humidity and a selective refrigeration of each storage compartment which are the same as that obtained by using the three-way valve can be obtained. Accordingly, there is no need to use the three-way valve, and so the manufacturing cost can be saved, and a configuration of the refrigerating system and a procedure to control the refrigerating system are simplified so that the risk due to occurrence of the mechanical troubles could be reduced.
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- Devices That Are Associated With Refrigeration Equipment (AREA)
Abstract
Disclosed are a refrigerator, having a main body in which a first storage compartment and a second storage compartment having different preset storage temperatures are formed, and a compressor and a condenser to refrigerate each storage compartment, the refrigerator including: first and second evaporators corresponding to the first storage compartment and the second storage compartment, respectively; a first refrigerant tube connecting sequentially the compressor, the condenser and the first and second evaporators in series; a second refrigerant tube diverged from the first refrigerant tube at a front end of the first evaporator and connected to a front end of the second evaporator; and a 2-way switching valve provided between a diverging point of the second refrigerant tube and the first evaporator and closing/opening the first refrigerant tube.
Description
- This application claims priority from Korean Patent Application No. 10-2005-0089038, filed on Sep. 24, 2005, in the Korean Intellectual Property Office, the disclosure of which is incorporated herein by reference.
- 1. Field of the Invention
- The present invention relates to a refrigerator and a method for controlling an operation of the same, and more particularly, to a refrigerator including two storage compartments with preset storage temperatures which differ from each other and two evaporators provided corresponding to the respective storage compartments, and a method for controlling an operation of the same.
- 2. Description of the Related Art
- In general, the refrigerator is an apparatus for storing food at a lower temperature and includes a refrigerating compartment in which the food is stored at a temperature that is above a freezing temperature; a freezing compartment in which the food is stored at a temperature that is below a freezing temperature; doors to open and close the refrigerating compartment and the freezing compartment; and a refrigerating system to cool the refrigerating compartment and the freezing compartment.
- The refrigerating system includes a compressor, a condenser, a decompressing unit and an evaporator. In recent, there is an instance where two evaporators are provided for supplying independently cooling air to the refrigerating compartment and the freezing compartment.
-
FIG. 1 shows one example of the independent cooling type refrigerating system including the refrigerating compartment provided with the independent evaporator and the freezing compartment provided with the independent evaporator. - Referring to
FIG. 1 , the refrigeratingsystem 101 of the conventional refrigerator includes acompressor 111; acondenser 112;decompressing units first evaporator 141 provided corresponding to afirst storage compartment 140 having a relatively high temperature and asecond evaporator 151 provided corresponding to asecond storage compartment 150 having a relatively low temperature; amain refrigerant tube 171 connecting sequentially the above members in series; abranch refrigerant tube 175 diverged from a front end of thefirst evaporator 141 and connected to a front end of thesecond evaporator 151; and a three-way valve 180 provided at a diverging point of thebranch refrigerant tube 175 and opening and closing selectively themain refrigerant tube 171 and thebranch refrigerant tube 175. - In the conventional refrigerator having the configuration as described above, in a case that the
first storage compartment 140 and thesecond storage compartment 150 are simultaneously refrigerated, themain refrigerant tube 171 is opened and thebranch refrigerant tube 175 is closed to make the refrigerant circulate in the compressor 111-the condenser 112-the 3-way valve 180-the first decompressing unit 161-the first evaporator 141-the second decompressing unit 162-the second evaporator 151-thecompressor 111 in order. Also, in a case that only thesecond storage compartment 150 is refrigerated, themain refrigerant tube 171 is closed and thebranch refrigerant tube 175 is opened to make the refrigerant circulate in the compressor 111-the condenser 112-the second decompressing unit 162-the second evaporator 151-thecompressor 111 in order. - As described above, however, the conventional refrigerator has the drawback that, since the 3-
way valve 180 is provided at a diverging point, the 3-way valve 180 should be always controlled in a case of refrigerating the first andsecond storage compartments second storage compartment 150. - Accordingly, a complicated control is needed for controlling the 3-
way valve 180, and so a structure of the refrigerating system becomes complicate and the risk based on occurrence of mechanical troubles could be increased due to the complicated structure. - Additional aspects and/or advantages of the invention will be set forth in part in the description which follows and, in part, will be apparent from the description, or may be learned by practice of the invention.
- Accordingly, it is an aspect of the present invention to provide a refrigerator with two evaporators, which excludes a 3-way valve and can save a manufacturing cost and reduce risk due to occurrence of mechanical troubles by simplifying the structure and a control process for a refrigerating system.
- The foregoing and/or other aspects of the present invention can be achieved by providing a refrigerator, having a main body in which a first storage compartment and a second storage compartment having different preset storage temperatures are formed, and a compressor and a condenser for refrigerating each storage compartment, the refrigerator including: first and second evaporators corresponding to the first storage compartment and the second storage compartment, respectively; a main refrigerant tube connecting sequentially the compressor, the condenser and the first and second evaporators in series; a second refrigerant tube diverged from the first refrigerant tube at a front end of the first evaporator and connected to a front end of the second evaporator; and a 2-way switching valve disposed between a diverging point of the second refrigerant tube and the first evaporator and to close/to open the main refrigerant tube.
- According to an aspect of the invention, the refrigerator further includes an inside temperature sensor for sensing an inside temperature of the first storage compartment; and a control unit to control the 2-way switching valve such that the switching valve closes the main refrigerant tube when the inside temperature of the first storage compartment sensed by the inside temperature sensor reaches the preset storage temperature.
- According to an aspect of the invention, the preset storage temperature of the first storage compartment is higher than the preset storage temperature of the second storage compartment.
- According to an aspect of the invention, the refrigerator further includes a first decompressing unit disposed between the 2-way switching valve and the first evaporator and a second decompressing unit disposed between the branch point and the second evaporator.
- According to an aspect of the invention, the refrigerator further includes a third decompressing unit disposed between the first evaporator and the second evaporator.
- Still, another aspect of the present invention can be achieved by providing a method for controlling an operation of a refrigerator including a main body in which a first storage compartment and a second storage compartment are formed, and a compressor and a condenser for refrigerating each storage compartment, the method including: diverging a branch refrigerant tube from a main refrigerant tube, which connects sequentially the compressor, the condenser and first and second evaporators corresponding to the first and second storage compartments, at an front end of the first evaporator, the second refrigerant tube being connected the second evaporator; presetting storage temperatures of the first and second storage compartments such that a preset storage temperature of the first storage compartment is higher than a preset storage temperature of the second storage compartment; driving the compressor to perform a refrigerating operation; opening a 2-way switching valve disposed between a diverging point of the second refrigerant tube and the first evaporator; sensing an inside temperature of the first storage compartment; and closing the switching valve when the sensed inside temperature of the first storage compartment reaches the preset storage temperature of the first storage compartment.
- According to an aspect of the invention, the method for controlling an operation of refrigerator further includes: sensing the inside temperature of the second storage compartment; and halting an operation of the compressor when the sensed inside temperature of the second storage compartment reaches the preset storage temperature.
- Still, another aspect of the present invention can be achieved by providing a refrigerator having a main body in which n storage compartments having different preset storage temperatures, and a compressor and a condenser for refrigerating each storage compartment, including: n evaporators corresponding to n storage compartments, respectively; a main refrigerant tube connecting sequentially the compressor, the condenser and the n evaporators in series; n−1 branch refrigerant tubes diverged from the main refrigerant tube at a front end of the first evaporator and connected to a front end of any one of n−1 evaporators; and except the first one a n-way valve disposed at a rear side of a diverging point of the branch refrigerant tube connected to a front end of the evaporator, which corresponds to the storage compartment having a lowest preset storage temperature, among n−1 evaporators except the first evaporator, and closing/opening the main refrigerant tube and the other n−2 branch tubes.
- According to an aspect of the invention, the refrigerator further includes n inside temperature sensors to sense inside temperatures of the n storage compartments; and a control unit to control the n-way valve according to a sensed each inside temperature sensor so as to prevent an inflow of the refrigerant into the evaporator corresponding to the storage compartment reaching the preset storage temperature.
- According to an aspect of the invention, the n is 3 (three).
- The above and/or other aspects and advantages of the prevent invention will become apparent and more readily appreciated from the following description of the exemplary embodiments, taken in conjunction with the accompany drawings, in which:
-
FIG. 1 is a view showing a configuration of a refrigerating system of the conventional refrigerator; -
FIG. 2 is a view showing a configuration of a refrigerating system of the refrigerator according to an aspect of the present invention; -
FIG. 3 is a flow chart for illustrating a method for controlling an operation of the refrigerator according to an aspect of the present invention; and -
FIG. 4 is a table showing the comparison result of the performances of the refrigerating systems ofFIG. 1 andFIG. 2 . - Reference will now be made in detail to the embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the like elements throughout. The embodiments are described below to explain the present invention by referring to the figures.
- As shown in
FIG. 2 , a refrigerator according to an aspect of the present invention includes a main body (not shown) in which first andsecond storage compartments compressor 11 and acondenser 12 to refrigerate the first andsecond storage compartments first evaporator 41 corresponding to thefirst storage compartment 40 and asecond evaporator 51 corresponding to thesecond storage compartment 50; amain refrigerant tube 71 connecting sequentially thecompressor 11, thecondenser 12, the first andsecond evaporators branch refrigerant tube 75; and aswitching valve 80. - Here, the refrigerator can further include inside
temperature sensors second storage compartments way switching valve 80 according to the sensed inside temperatures of the first andsecond storage compartments - A main body (not shown) of the refrigerator is partitioned to provide the
storage compartments storage compartments storage compartments - Hereinafter, as shown in
FIG. 2 , the refrigerator including twostorage compartments first storage compartment 40 is preset to be higher than the preset storage temperature of thesecond storage compartment 50. - The refrigerating
system 1 includes thecompressor 11 for raising the pressure of a refrigerant; thecondenser 12 to condense the refrigerant compressed in thecompressor 11;decompressing units second evaporators - The
evaporators storage compartments evaporators evaporators storage compartments second storage compartment 50 is preset to be lower than the preset storage temperature of thefirst storage compartment 40, thesecond evaporator 51 can be provided to have the evaporating capability higher than that of thefirst evaporator 41. Cooling air produced in theevaporators storage compartments cooling fans evaporators - The
decompressing units evaporators decompressing units - A plurality of the
decompressing units condenser 12 and one of theevaporators evaporators decompressing units decompressing units decompressing units - In
FIG. 2 , for example, in a case that the refrigerant passed through thecondenser 12 can enter both themain refrigerant tube 71 and thebranch refrigerant tube 75 by opening the 2-way switching valve 80, if the resistance of the firstdecompressing unit 61 is less than that of the second compressingsection 62, a greater deal of the refrigerant can be flowed in themain refrigerant tube 71. - The
main refrigerant tube 71 forms a closed circuit of connecting sequentially thecompressor 11, thecondenser 12, thedecompressing units second evaporators evaporators main refrigerant tube 71 is determined according to the preset storage temperatures of thestorage compartments evaporators storage compartments first storage compartment 40 having a higher preset storage temperature first reaches the preset storage temperature. At this time, the refrigerant is flowed in thebranch refrigerant tube 75 by closing themain refrigerant tube 71, and so only thesecond storage compartment 50 can be refrigerated selectively. - The
branch refrigerant tube 75 is diverged between thecondenser 12 and thefirst evaporator 41, and connected to a front end of thesecond evaporator 51. Thebranch refrigerant tube 75 bypasses thefirst evaporator 41, and so the refrigerant flowed in thebranch refrigerant tube 75 can enter only thesecond evaporator 51. On the other hand, no valve for controlling a flow of the refrigerant to thebranch refrigerant tube 75 can be provided on thebranch refrigerant tube 75. - The 2-
way switching valve 80 disposed between a diverging point of thebranch refrigerant tube 75 and thefirst evaporator 41 to open/close the mainrefrigerant tube 71. The 2-way switching valve 80 can be provided to open/close completely the mainrefrigerant tube 71 or to adjust a flow rate of the refrigerant flowed in the mainrefrigerant tube 71. On the other hand, the user can operate manually the switchingvalve 80 or the switching valve can be controlled by a control unit (80). - The
inside temperature sensors inside temperature sensor 45 and the secondinside temperature sensor 55 can be provided. Alternatively, three or more inside temperature sensors can be provided. Information about the inside temperatures of the storage compartments 40 and 50 sensed by theinside temperature sensors control unit 90. - The control unit (90) is disposed in the main body and compares the inside temperature of the
first storage compartment 40 sensed by the firstinside temperature sensor 45 with the preset storage temperature for thefirst storage compartment 40. Once the sensed inside temperature reaches the preset storage temperature, the control unit controls the 2-way switching valve 80 so as to prevent the refrigerant from flowing into thefirst evaporator 41. On the other hand, once the inside temperature of thesecond storage compartment 50 sensed by the secondinside temperature sensor 55 reaches the preset storage temperature for the second storage compartment, thecontrol unit 90 can halt an operation of thecompressor 11. - An aspect of the present invention, the refrigerator is provided with two
storage compartments evaporators refrigerant tube 71 connecting the n evaporators in series and n−1branch refrigerant tubes 75 diverged from the main refrigerant tube at a front end of the first one of the n evaporators which are connected to each other in series and connected to an front end of any one of n−1 evaporators except the first one. An n-way valve is positioned at a rear side of a diverging point of thebranch refrigerant tube 75 connected to a front end of the evaporator corresponding to the storage compartment having a lowest preset storage temperature. In general, in a case that n storage compartments are connected to each other in series, the storage compartments are connected in descending order of the preset storage temperatures, and so the n-way valve is provided at a rear side of a diverging point of thebranch refrigerant tube 75 connected to a front end of the last evaporator. Accordingly, in a case 3 storage compartments are provided, the 3-way valve is disposed at a rear side of a diverging point of the second branch refrigerant tube connected to a front end of the third evaporator to open and close the main refrigerant tube and the first branch refrigerant tube. - Below, the method for controlling an operation of the refrigerator according to an aspect of the present invention is described in detail with reference to
FIG. 3 . - First of all, the refrigerator according to an aspect of the present invention includes the first and second storage compartments 40 and 50 formed therein; the
first evaporator 41 corresponding to thefirst storage compartment 40 and thesecond evaporator 51 corresponding to thesecond storage compartment 50; the mainrefrigerant tube 71 to which the first andsecond evaporators branch refrigerant tube 75 diverged from the main refrigerant tube at a front end of thefirst evaporator 41 and connected to a front end of thesecond evaporator 51; and the 2-way switching valve 80 disposed between a diverging point of thebranch refrigerant tube 75 and thefirst evaporator 41. - First, the storage temperatures of the
first storage compartment 40 and thesecond storage compartment 50 are preset. Thestorage compartment 40 can have the preset storage temperature which differs from that of thesecond storage compartment 50. For example, the storage temperatures can be preset such that the preset storage temperature T1 of thefirst storage compartment 40 is higher than the preset storage temperature T2 (T1>T2) of thesecond storage compartment 50 at operation S11. - The case of refrigerating simultaneously the
first storage compartment 40 and thesecond storage compartment 50 is described as follows. - The
compressor 11 is driven to refrigerate the first and second storage compartments 40 and 50 at operation S12, and the inside temperatures of the first and second storage compartments 40 and 50 are sensed by theinside temperature sensors - In the early state at which a refrigerating operation is initiated by driving the
compressor 11, the 2-way switching valve 80 is opened so as to allow the refrigerant to flow sequentially in thefirst evaporator 41 and thesecond evaporator 51 through the mainrefrigerant tube 71 at operation S14. In this case, once the 2-way switching valve 80 is opened, both the mainrefrigerant tube 71 and thebranch refrigerant tube 75 become opened, and so the refrigerant passed through thecondenser 12 can be flowed into both the mainrefrigerant tube 71 and thebranch refrigerant tube 75. However, since the storage temperature of thefirst storage compartment 40 is higher than that of the second storage compartment, an evaporation pressure in thefirst evaporator 41 is relatively high so that most refrigerant enters the mainrefrigerant tube 71. Accordingly, although the minimum of the refrigerant is entered to thesecond evaporator 51 through thebranch refrigerant tube 75, such refrigerant little affects the performance of the refrigerator and the energy consumption. - Also, in a case that the resistance of the
second decompressing unit 62 disposed on thebranch refrigerant tube 75 is larger than the sum of the resistances of the first andthird decompressing units refrigerant tube 71, it is possible to make a greater deal of the refrigerant flow into the mainrefrigerant tube 71. - The
control unit 90 compares the inside temperature of thefirst storage compartment 40 sensed by the firstinside temperature sensor 45 with the preset storage temperature of thefirst storage compartment 40 at operation S15. If the inside temperature of thefirst storage compartment 40 reaches the preset storage temperature of the first storage compartment, the control unit closes the switchingvalve 80 at operation S16 so as to prevent an inflow of the refrigerant into thefirst evaporator 41. Therefore, the refrigerant is directly flowed to thesecond evaporator 51 through thebranch refrigerant tube 75. - Next, if the
second storage compartment 50 sensed by the secondinside temperature sensor 55 reaches the preset storage temperature of thesecond storage compartment 50 at operation S17, thecontrol unit 90 halts the operation of thecompressor 11 to stop the refrigerating operation at operation S18. -
FIG. 4 is a table showing the comparison result of the performances of the conventional refrigerating system shown inFIG. 1 and the refrigerating system according to an aspect of the present invention shown inFIG. 2 . The results shown inFIG. 4 is obtained after the refrigerating operation is performed under the condition of an external temperature of 32° C., a humidity of 75%, a preset storage temperature of the second storage compartment of −20° C. and a preset storage temperature of thefirst storage compartment 40 of 1°C. - Here, the operation ratio refers to a proportion of the time for which the
compressor 11 is driven to the reference time for which the refrigerating operation is performed. It is known from table shown inFIG. 4 that the operation ratio obtained by using only the switchingvalve 80 is substantially same as that obtained by using the three-way valve and there is no difference in the power consumption between the case of using the 2-way switching valve and the case of using the three-way valve. - Accordingly, the refrigerator and the method to control an operation of the same can refrigerate selectively the
first storage compartment 40 or thesecond storage compartment 50 by the 2-way switching valve 80 provided between a diverging point and thefirst evaporator 41 without using the three-way valve. - Therefore, there is no need to use the three-way valve which is relatively expense as compared with the 2-
way switching valve 80, and so the manufacturing cost can be saved. Also, there is no need to construct the complicated control system required to control the three-way valve so that the configuration of the refrigerating system and the process to control the refrigerating system become simplified, and so the risk due to occurrence of mechanical troubles could be reduced. - According to the refrigerator and the method to control an operation of the same according to the present invention as described above, by using only the switching valve disposed at the main refrigerant tube, the operation effect of the refrigerator such as an operation of the refrigerating compartment under high humidity and a selective refrigeration of each storage compartment which are the same as that obtained by using the three-way valve can be obtained. Accordingly, there is no need to use the three-way valve, and so the manufacturing cost can be saved, and a configuration of the refrigerating system and a procedure to control the refrigerating system are simplified so that the risk due to occurrence of the mechanical troubles could be reduced.
- Although a few exemplary embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes may be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (15)
1. A refrigerator, having a main body in which a first storage compartment and a second storage compartment having different preset storage temperatures are formed, and a compressor and a condenser to refrigerate each storage compartment, the refrigerator comprising:
first and second evaporators corresponding to the first storage compartment and the second storage compartment, respectively;
a first refrigerant tube connecting sequentially the compressor, the condenser and the first and second evaporators in series;
a second refrigerant tube diverged from the first refrigerant tube at a front end of the first evaporator and connected to a front end of the second evaporator; and
a switching valve disposed between a diverging point of the branch refrigerant tube and the first evaporator and closing/opening the first refrigerant tube.
2. The refrigerator according to claim 1 , further comprising
an inside temperature sensor to sense an inside temperature of the first storage compartment; and
a control unit to control the switching valve such that the switching valve closes the first refrigerant tube when the inside temperature of the first storage compartment sensed by the inside temperature sensor reaches the preset storage temperature.
3. The refrigerator according to claim 2 , wherein the preset storage temperature of the first storage compartment is higher than the preset storage temperature of the second storage compartment.
4. The refrigerator according to claim 3 , further comprising a first decompressing unit disposed between the switching valve and the first evaporator and a second decompressing unit disposed between the branch point and the second evaporator.
5. The refrigerator according to claim 4 , further comprising a third decompressing unit disposed between the first evaporator and the second evaporator.
6. The refrigerator according to claim 1 , wherein the switching valve is a 2-way switch valve.
7. A method to control an operation of a refrigerator comprising a main body in which a first storage compartment and a second storage compartment are formed, a second refrigerant tube from a first refrigerant tube, which connects sequentially the compressor, the condenser and first and second evaporators corresponding to the first and second storage compartments, at an front end of the first evaporator, the branch refrigerant tube being connected the second evaporator; and a compressor and a condenser for refrigerating each storage compartment, the method comprising:
presetting storage temperatures of the first and second storage compartments such that a preset storage temperature of the first storage compartment is higher than a preset storage temperature of the second storage compartment;
driving the compressor to perform a refrigerating operation;
opening a switching valve provided between a diverging point of the second refrigerant tube and the first evaporator;
sensing an inside temperature of the first storage compartment; and
closing the switching valve when the sensed inside temperature of the first storage compartment reaches the preset storage temperature of the first storage compartment.
8. The method to control an operation of refrigerator according to claim 7 , further comprising:
sensing the inside temperature of the second storage compartment; and
halting an operation of the compressor when the sensed inside temperature of the second storage compartment reaches the preset storage temperature of the second storage compartment.
9. The method to control an operation of refrigerator according to claim 7 , wherein the switching valve is a 2-way switching valve.
10. A refrigerator having a main body in which n storage compartments having different preset storage temperatures are formed, and a compressor and a condenser to refrigerate each storage compartment, comprising:
n evaporators corresponding to n storage compartments, respectively;
a main refrigerant tube connecting sequentially the compressor, the condenser and the n evaporators in series;
n−1 branch refrigerant tubes diverged from the main refrigerant tube at a front end of the first evaporator and connected to a front end of any one of n−1 evaporators; and except the first one
a n-way valve provided at a rear side of a diverging point of the branch refrigerant tube connected to a front end of the evaporator, which corresponds to the storage compartment having a lowest preset storage temperature, among n−1 evaporators except the first evaporator, and closing/opening the main refrigerant tube and the other n−2 branch tubes.
11. The refrigerator according to claim 10 , further comprising
n inside temperature sensors to sense inside temperatures of the n storage compartments; and
a control unit to control the n-way valve according to a sensing result of each inside temperature sensor so as to prevent an inflow of the refrigerant into the evaporator corresponding to the storage compartment reaching the preset storage temperature.
12. The refrigerator according to claim 11 , wherein the n is 3 (three).
13. A method to control an operation of a refrigerator comprising a main body in which a first storage compartment and a second storage compartment are formed, and a compressor and a condenser for refrigerating each storage compartment, a second refrigerant tube from a first refrigerant tube, which connects sequentially the compressor, the condenser and first and second evaporators corresponding to the first and second storage compartments, at an front end of the first evaporator, the second refrigerant tube being connected the second evaporator; the method comprising:
driving the compressor; and
flowing a refrigerant into the first refrigerant tube and the second refrigerant tube simultaneously to operate the first and the second storage compartments at the same time.
14. The method of claim 13 , further comprises
sensing an inside temperature of the first storage compartment; and
closing switching valve to stop flowing the refrigerant to the first refrigerant tube when the sensed the inside temperature of the first storage compartment is lower than a predetermined temperature of the first storage compartment.
15. The method of claim 14 , further comprises:
sensing an inside temperature of the second storage compartment; and
halting an operation of the compressor when the sensed the inside temperature of the first storage compartment is lower than a predetermined temperature of the second storage compartment.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
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KR10-2005-0089038 | 2005-09-24 | ||
KR1020050089038A KR100726456B1 (en) | 2005-09-24 | 2005-09-24 | Refrigerator |
Publications (1)
Publication Number | Publication Date |
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US20070068193A1 true US20070068193A1 (en) | 2007-03-29 |
Family
ID=37892207
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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US11/522,401 Abandoned US20070068193A1 (en) | 2005-09-24 | 2006-09-18 | Refrigerator and method for controlling operation of the same |
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US (1) | US20070068193A1 (en) |
KR (1) | KR100726456B1 (en) |
CN (1) | CN1936466A (en) |
Cited By (7)
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US20070137230A1 (en) * | 2005-09-16 | 2007-06-21 | Samsung Electronics Co., Ltd. | Refrigerator and control method thereof |
US20090260379A1 (en) * | 2008-04-22 | 2009-10-22 | Samsung Electronics Co., Ltd. | Refrigerator with reservoir |
US8794026B2 (en) | 2008-04-18 | 2014-08-05 | Whirlpool Corporation | Secondary cooling apparatus and method for a refrigerator |
US9086232B1 (en) | 2010-01-18 | 2015-07-21 | Robert Michael Read | Refrigeration system having supplemental refrigerant path |
US9347694B2 (en) | 2013-02-28 | 2016-05-24 | Whirlpool Corporation | Dual suction compressor with rapid suction port switching mechanism for matching appliance compartment thermal loads with cooling capacity |
CN107084577A (en) * | 2017-06-27 | 2017-08-22 | 海信容声(广东)冰箱有限公司 | The control method and control device and refrigerator of a kind of dual system refrigerator |
WO2021034134A1 (en) * | 2019-08-21 | 2021-02-25 | Lg Electronics Inc. | Refrigerating system using non-azeotropic mixed refrigerant |
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KR101189976B1 (en) | 2009-03-17 | 2012-10-12 | 위니아만도 주식회사 | complexed kimchi refrigerator |
CN102313402A (en) * | 2010-07-08 | 2012-01-11 | 无锡松下冷机有限公司 | Refrigerator |
KR101238064B1 (en) * | 2011-02-15 | 2013-02-28 | 엘지전자 주식회사 | Refrigerator |
KR102141382B1 (en) * | 2019-12-19 | 2020-08-05 | 주식회사 메가텍 | Apparatus for diffusion-absorption refrigeration |
CN113091341A (en) * | 2021-03-29 | 2021-07-09 | 广东美芝制冷设备有限公司 | Double-temperature refrigerating system and refrigerating device |
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US20090260379A1 (en) * | 2008-04-22 | 2009-10-22 | Samsung Electronics Co., Ltd. | Refrigerator with reservoir |
US9086232B1 (en) | 2010-01-18 | 2015-07-21 | Robert Michael Read | Refrigeration system having supplemental refrigerant path |
US9347694B2 (en) | 2013-02-28 | 2016-05-24 | Whirlpool Corporation | Dual suction compressor with rapid suction port switching mechanism for matching appliance compartment thermal loads with cooling capacity |
CN107084577A (en) * | 2017-06-27 | 2017-08-22 | 海信容声(广东)冰箱有限公司 | The control method and control device and refrigerator of a kind of dual system refrigerator |
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Also Published As
Publication number | Publication date |
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KR20070034397A (en) | 2007-03-28 |
KR100726456B1 (en) | 2007-06-11 |
CN1936466A (en) | 2007-03-28 |
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