US3872687A - Vehicle air conditioning system - Google Patents
Vehicle air conditioning system Download PDFInfo
- Publication number
- US3872687A US3872687A US406252A US40625273A US3872687A US 3872687 A US3872687 A US 3872687A US 406252 A US406252 A US 406252A US 40625273 A US40625273 A US 40625273A US 3872687 A US3872687 A US 3872687A
- Authority
- US
- United States
- Prior art keywords
- evaporator
- refrigerant
- compressor
- condenser
- capillary tube
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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Classifications
-
- 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
- F25B43/00—Arrangements for separating or purifying gases or liquids; Arrangements for vaporising the residuum of liquid refrigerant, e.g. by heat
- F25B43/006—Accumulators
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
- B60H1/00—Heating, cooling or ventilating [HVAC] devices
- B60H1/00321—Heat exchangers for air-conditioning devices
- B60H1/00342—Heat exchangers for air-conditioning devices of the liquid-liquid type
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
- B60H1/00—Heating, cooling or ventilating [HVAC] devices
- B60H1/32—Cooling devices
- B60H1/3204—Cooling devices using compression
-
- 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
- F25B40/00—Subcoolers, desuperheaters or superheaters
-
- 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
- F25B2400/00—General features or devices for refrigeration machines, plants or systems, combined heating and refrigeration systems or heat-pump systems, i.e. not limited to a particular subgroup of F25B
- F25B2400/05—Compression system with heat exchange between particular parts of the system
- F25B2400/051—Compression system with heat exchange between particular parts of the system between the accumulator and another part of the cycle
-
- 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
- F25B2500/00—Problems to be solved
- F25B2500/12—Sound
Definitions
- the vehicle air conditioning system comprises the usual compressor, evaporator and condenser connected together in operative relationship. Capillary tube refrigerant expansion means are provided between the condenser and evaporator. A suction accumulator is provided between the evaporator and compressor so that the system will be effective when the compressor operates at variable speeds, the condenser is subjected to variable ambient temperatures and the evaporator is subjected to a variable load.
- the expansion valve be replaced with a capillary tube which would provide the desired expansion means.
- a capillary tube because of the conditions under which vehicle air conditioning systems are operated, it has not been practical in the past to use a capillary tube.
- the compressor of the vehicle system is driven by the vehicle engine which may operate at high or low speeds.
- Various devices may be used to provide a uniform speed for the compressor.
- vehicle air conditioning systems must operate under variable ambient temperature and pressure conditions, either caused by change in location of the vehicle (as the vehicle, for example, is driven from a hot, low altitude location up a mountain to a cooler, higher altitude location.)
- a capillary tube as the expansion device ifa suction accumulator is provided between the evaporator and the compressor.
- the use of a capillary tube is advantageous in the reduction in cost as the result of elimination of parts. Additionally, the capillary tube is more dependable than an expansion valve because it has no moving parts and therefore does not require adjustment or in other respects get out of order.
- the capillary tube also results in feeding the evaporator coil more uniformly because there is no opening and closing as in the case of a valve. As a result, the evaporator coil may be maintained full at all times and may, in fact, even spill over into the suction accumulator.
- capillary tube instead of an expansion valve is advantageous in that the load on the vehicle engine of the air conditioning system is less at start-up due to the tendency for equalization of pressures by the capillary tube. This means that it requires less torque to start the engine. Also, if the air conditioning system is of the cycling type, there will be less vibration and shock as the compressor re-starts at the beginning of each cycle because of pressure equalization resulting from the use of a capillary tube.
- a vehicle air conditioning system comprising a compressor, an evaporator and a condensor connected in operative relationship. Capillary tube refrigerant means are provided between the condensor and evaporator. A suction accumulator is provided between the evaporator and compressor whereby the system effectively operates when the compressor operates at variable speeds, the condensor is subjected to variable ambient temperatures and the evaporator is subjected to a variable load.
- the suction-accumulator comprises a casing having an inlet and an outlet. A U-shaped tube forms the outlet. The bend in the tube is adjacent the bottom of the casing.
- a metering opening is provided in the bend of the tube to meter liquid refrigerant from the easing into the gas flowing through the U-shaped tube.
- the capillary tube is preferably mounted within a protective outer tube of larger diameter.
- the inlet to the capillary tube may be connected to the high pressure side of the system with the outlet within the protective tube.
- the outlet of the capillary tube may be connected to the low pressure side of the system with the inlet to the capillary tube being within the protective tube.
- FIG. 1 is a schematic of one embodiment of a vehicle air conditioning system in accordance with the present invention.
- FIG. 2 is a schematic view of a second embodiment of a vehicle air conditioning system in accordance with the present invention.
- the vehicle air conditioning system 10 comprises a condenser 12, compressor 14, and evaporator 16.
- the outlet of the compressor 14 is connected to the inlet of the condenser 12 by a line 18.
- a discharge muffler 20 is provided in line 18 to minimize the noise problem on the high pressure side of the system.
- the outlet of the condenser 12 is connected to the inlet of a drier 22 via line 23.
- the drier 22 is of the usual type and may contain, for example, silica-gel, for the removal of moisture from the refrigerant.
- the outlet of the drier 22 is connected to the inlet of a strainer 28 via line 30.
- the strainer 28 comprises a tubular container 32 which is provided with a cupshaped inlet screen 34 to filter foreign particles from the sight A slight glass 29 is provided in line 30.
- a capillary tube 36 is directly connected to the outlet 38 of the container 32.
- the capillary tube is essentially an expansion device.
- the length of the tube 36 depends upon the size of the particular condenser 12 used in the system and the particular type of refrigerant used.
- the inner diameter of the tube 36 is very small and the length may vary greatly from a few inches up to several feet depending upon the overall capacity of the system. Because the capillary tube offers a restricted passage, the resistance to the refrigerant flow is sufficient to build up a high enough head pressure to produce some condensation of refrigerant gas. Operating balance is obtained by properly proportioning the size and length of the tube to the particular system on which it is used.
- the capillary tube 36 is received within a protective tube 40 of considerably greater diameter than the capillary tube.
- One end 41 of the tube 40 is directly mounted on the outlet of the strainer 28.
- the other end 42 of the tube 40 is connected to a refrigerant line 44 which in turn leads to the inlet of the evaporator 16.
- the tube 40 becomes filled with the refrigerant which exists from the capillary tube 36.
- the refrigerant contained within the tube 40 may be considered to be at the low pressure side of the system because it has passed through the capillary tube 36. As liquid refrigerant flows through the capillary tube 36, the pressure is reduced and there is some conversion of liquid to gas.
- the outlet of the evaporator 16 is connected to the inlet ofthe suction accumulator 46 via line 48.
- the suction accumulator 46 comprises a casing 50 having an inlet tube 52 which extends through the upper end and terminates within the casing in the upper portion thereof.
- An outlet tube 54 also extends through the upper end of the casing 50.
- the outlet tube 54 is in the shape of a U-tube.
- One leg 56 of the tube 54 extends from the upper end of the casing downwardly to a point adjacent the lower end of the casing.
- the tube is then provided with a bend 58 and the second leg 60 extends upwardly and terminates in an open end adjacent to the upper end of the casing.
- a small metering opening 62 is provided in the tube bend 58 for the passage of metered amounts of liquid refrigerant from the casing into the tube 54.
- cold refrigerant gas having some liquid refrigerant entrained therein enters the accumulator through the inlet tube 52.
- the incoming gases which move at a relatively high velocity, are directed downwardly and are free to expand.
- the refrigerant gases are drawn into the open end of the U- tube 54, pass through both legs thereof and exit from the accumulator.
- the outlet of the accumulator 46 is connected to the inlet of the compressor 14 via line 66.
- a pressure regulator valve 24 is provided in line 66.
- the compressor which creates a suction, draws the gaseous refrigerant through the accumulator at a relatively rapid rate.
- Liquid refrigerant which enters the accumulator through the inlet tube 52 drops to the bottom of the accumulator and is subsequently drawn through the small opening 62 in the tube bend 58 and then through the leg 56 at a metered rate.
- the liquid which is drawn through the opening 62 is entrained in the stream of gaseous refrigerant and is drawn through the leg 60 and thence to the compressor of the system.
- the opening 62 acts as a restriction and causes liquid refrigerant to be metered into the compressor at a controlled rate.
- the accumulator thus acts to prevent large amounts of liquid refrigerant from suddenly entering the compressor. Such sudden surges of liquid may result in seriously damaging the compressor.
- the suction accumulator 46 also permits variation in the refrigerant charge throughout the cycle and thus efficient operation of the system at different speeds and ambient temperature conditions.
- the suction accumulator may also contain a desiccant which would eliminate the need for a separate drier 22.
- the construction of the accumulator 46 results in the accumulator acting as a muffler.
- the accumulator 46 is placed in heat exchange relationship with the water of the vehicle heater 68.
- the outlet of the heater 68 is connected to the inlet of a jacket 72 via line 76.
- An on-off valve 74 is provided in this line.
- the jacket 72 encloses the lower portion of the suction accumulator 46.
- the outlet of the jacket 72 is connected to the inlet of the heater 68 via line 78.
- the function of the evaporator pressure regulator valve 24 is to partially close when the pressure in the evaporator 16 begins to decrease. When the valve 24 partially closes, it causes the evaporator pressure to remain at a minimum pre-determined pressure which is selected so that the corresponding temperature thereof will not permit the evaporator to freeze.
- Freon-l2 is the refrigerant most often used in vehicle air conditioning systems. This refrigerant will boil at 2 l .7F. below zero at atmospheric pressure. In view of the fact that water freezes at 32F, the temperature in the evaporator must be controlled so that water collecting on the core surface will not freeze and block air flow through the unit.
- the evaporator pressure regulator valve is used to provide the necessary refrigerant pressure control to aid in preventing evaporator freeze-up and to aid in maintaining efficiency of the system.
- the system may be designed for use without the valve 24. However, the use of this valve is desirable to provide greater stability and protection against evaporator freeze-up and to eliminate the possible necessity of another control element in the system.
- Cool refrigerant gas is drawn from the accumulator 46 into the compressor 14 (which is'driven by the vehicle engine) and pumped therefrom to the condenser 12 under high pressure.
- This high pressure gas will also have a high temperature as a result of being subjected to compression.
- the condenser As the gas passes through the condenser, it loses heat to the ambient atmosphere, the condenser usually being located at the forward portion of the vehicle in front of the automotive radiator to result in air passing thereover.
- the gas is thus condensed to a liquid.
- the liquid passes from the condenser 12 through the drier 22 and strainer 28 into the capillary tube 36.
- the refrigerant exists from the capillary tube 36 into the protective tube 40. There is sufficient flow to normally flood the tube 40.
- the tube 40 protects the capillary tube 36 from physical damage and also protects this tube from sudden temperature changes such as a hot blast of air from the vehicle engine which might influence its performance.
- the refrigerant then passes into the evaporator l6, maintaining the evaporator in the most desired flooded condition throughout the cycle of operation. This is opposed to a system wherein an expansion valve is used. In such a system, the evaporator is not always maintained in the desired flooded condition because of hunting and seeking of the expansion valve.
- the refrigerant vaporizes within the evaporator. Normally, a motor driven fan is provided to blow air over the evaporator for cooling purposes within the vehicle.
- Refrigerant gas exits from the evaporator into the suction accumulator 46.
- This gas may have liquid refrigerant entrained therein and, in fact, liquid refrigerant may spill over lightly from the evaporator before vaporizing into the suction accumulator because of the high condition of flooding which the capillary tube 36 maintains.
- the gas is removed from the accumulator 46 immediately by the U-tube 54. Liquid refrigerant is retained in the accumulator for the time necessary for it to be metered through the metering opening 62. There is always a metering of refrigerant through the opening 62 regardless of temperature or pressure conditions within the system.
- the system thus described includes many counterbalancing factors which permits it to be operated over a wide range of compressor speeds, ambient temperature conditions and load conditions.
- the capillary tube will satisfactorily control refrigerant flow from very low speeds to very high speeds.
- liquid may tend to back up in the condenser but is available because of the large volume of the suction accumulator. Consequently, the liquid will be further subcooled than is normal and will flow more rapidly through the capillary resulting in maintaining refrigerant flow throughout the system at the desired controlled rate.
- Another factor affecting the operation of the system at higher speeds is that the compressor volumetric efficiency falls off considerably thus providing an additional counterbalancing factor.
- the evaporator pressure regulator also will reduce refrigerant flow as it controls minimum evaporator pressure.
- FIG. 2 illustrates another embodiment of the vehicle refrigeration system.
- the system 80 comprises a compressor 82, condenser 84 and evaporator 86.
- the outlet of the compressor 82 is connected to the inlet of the condenser 84 via line 88.
- the compressor 82 is driven by the engine 83 of vehicle 85.
- a discharge muffler 90 is provided in this line.
- the outlet of the evaporator 86 is connected to the compressor 82 via line 92.
- An evaporator pressure regulator valve 94 is provided in this line as is a suction accumulator 96.
- a jacket 98 is provided around the suction accumulator 96.
- a line 100 leads from the outlet of the condenser 84 to the inlet of the jacket 98.
- a line 102 leads from the outlet of the jacket 98 to a strainer 104.
- Liquid refrigerant circulates through the jacket 98 in heat exchange relationship with the suction accumulator 96.
- This heat exchange relationship assists in preventing flooding of liquid refrigerant to the compressor in that it aids in vaporizing the refrigerant therewithin so that less will pass through the metering opening 106 in the U-tube 108 and be directed to the compressor.
- this heat exchange relationship permits the evaporator 86 to be run in a variable load super-heat condition. Because of the fact that the low side of the evaporator coil may be run in a completely flooded condition, the capacity of the evaporator will be increased to provide superior performance.
- the liquid exiting from the condenser is sub-cooled prior to entering the capillary tube 110.
- a heat exchange coil connected to the condenser outlet may be provided within the suction accumulator 96.
- a tube may be brazed around the outside of the suction accumulator and be connected to the outlet of the condenser.
- a desiccant 112 is provided within the jacket 98 to rerhove moisture from the refrigerant. This eliminates the need for a separate drier at the inlet to the capillary tube 110.
- the strainer 104 screens out foreign matter and prevents it from entering the capillary tube 110.
- a sight glass 114 is provided just prior to the strainer to permit visual examination of the condition of the fluid therewithin.
- a protective tube 116 is connected between the outlet of the strainer 104 and the inlet to the evaporator 86.
- the tube 116 receives refrigerant directly from the strainer.
- the inlet end 118 of the capillary tube is not connected directly to the strainer outlet as previously described in connection with FIG. 1.
- the outlet end 120 of the capillary tube is connected to a line 122 which is then directed to the inlet of the evaporator.
- the refrigerant contained in the capillary tube 110 is at the low side pressure as opposed to the liquid within the capillary tube 36 which was at the high side pressure. This arrangement does not affect the basic operation of the system. However, depending upon the overall characteristics of the refrigeration system, in some instances, it may be desirable to connect the capillary tube as in FIG. 2 and in other instances as in FIG. 1.
- an air conditioning system comprising a compressor, an evaporator and a condenser connected in operative relationship, said vehicle including an engine, said engine being drivingly connected to the compressor, capillary tube refrigerant expansion means between the condenser and evaporator, said capillary tube refrigerant expansion means comprising a capillary tube connected at one end to the low pressure side of the system leading to the evaporator, a protective tube of larger diameter around said capillary tube, one end of said protective tube being adjacent to the evaporator and being closed, the other jacket around the suction accumulator and spaced therefrom to provide for flow of refrigerant therearound in heat exchange relationship therewith, and means connecting said heat exchange means between said condenser and capillary tube refrigerant expansion means to provide heat exchange between the refrigerant from the condenser and the refrigerant from the evaporator in the suction accumulator.
Abstract
Description
Claims (1)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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US406252A US3872687A (en) | 1969-07-11 | 1973-10-15 | Vehicle air conditioning system |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
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US84103269A | 1969-07-11 | 1969-07-11 | |
US406252A US3872687A (en) | 1969-07-11 | 1973-10-15 | Vehicle air conditioning system |
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US3872687A true US3872687A (en) | 1975-03-25 |
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US406252A Expired - Lifetime US3872687A (en) | 1969-07-11 | 1973-10-15 | Vehicle air conditioning system |
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Cited By (29)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4169361A (en) * | 1975-10-28 | 1979-10-02 | Linde Aktiengesellschaft | Method of and apparatus for the generation of cold |
US4208887A (en) * | 1979-01-22 | 1980-06-24 | Tecumseh Products Company | Suction accumulator having heat exchanger |
US4216660A (en) * | 1978-05-04 | 1980-08-12 | T.E.S., Inc. | Heat generator |
US4238932A (en) * | 1979-07-23 | 1980-12-16 | General Electric Company | High pressure charge storage system |
FR2529313A1 (en) * | 1982-06-29 | 1983-12-30 | Philips Nv | MOTOR DRIVEN COMPRESSION TYPE REFRIGERATOR CIRCUIT |
EP0144917A2 (en) * | 1983-12-13 | 1985-06-19 | Audi Ag | Air conditioning device |
US4583377A (en) * | 1984-05-24 | 1986-04-22 | Thermo King Corporation | Refrigerant suction accumulator, especially for transport refrigeration unit |
EP0407106A1 (en) * | 1989-07-03 | 1991-01-09 | K-Whit Tools, Inc. | Refrigerant recovery device |
US5168721A (en) * | 1991-03-28 | 1992-12-08 | K-Whit Tools, Inc. | Refrigerant recovery device |
US5222369A (en) * | 1991-12-31 | 1993-06-29 | K-Whit Tools, Inc. | Refrigerant recovery device with vacuum operated check valve |
US5231841A (en) * | 1991-12-19 | 1993-08-03 | Mcclelland Ralph A | Refrigerant charging system and control system therefor |
US5245833A (en) * | 1992-05-19 | 1993-09-21 | Martin Marietta Energy Systems, Inc. | Liquid over-feeding air conditioning system and method |
EP0663578A1 (en) | 1994-01-15 | 1995-07-19 | Hussmann (Europe) Limited | Refrigeration apparatus |
US5491981A (en) * | 1993-09-15 | 1996-02-20 | Samsung Electronics Co., Ltd. | Refrigeration cycle having an evaporator for evaporating residual liquid refrigerant |
US5622055A (en) * | 1995-03-22 | 1997-04-22 | Martin Marietta Energy Systems, Inc. | Liquid over-feeding refrigeration system and method with integrated accumulator-expander-heat exchanger |
FR2752921A1 (en) * | 1996-08-31 | 1998-03-06 | Behr Gmbh & Co | COLLECTOR HEAT EXCHANGER ASSEMBLY AND AIR CONDITIONING INSTALLATION EQUIPPED WITH SUCH ASSEMBLY |
US5758506A (en) * | 1996-07-03 | 1998-06-02 | White Industries, Llc | Method and apparatus for servicing automotive refrigeration systems |
FR2792965A1 (en) * | 1999-04-30 | 2000-11-03 | Peugeot Citroen Automobiles Sa | Thermal heat exchanger assembly for an automobile air conditioning system, utilises an open circuit |
KR100484243B1 (en) * | 2000-10-05 | 2005-04-20 | 진금수 | Heat pump system |
US20060010905A1 (en) * | 2004-07-09 | 2006-01-19 | Junjie Gu | Refrigeration system |
WO2007082844A2 (en) * | 2006-01-13 | 2007-07-26 | BSH Bosch und Siemens Hausgeräte GmbH | Cooling system for an electric refrigerator |
WO2009010183A1 (en) * | 2007-07-13 | 2009-01-22 | Daimler Ag | Heat exchanger |
US20150135751A1 (en) * | 2013-11-20 | 2015-05-21 | Mitsubishi Electric Corporation | Refrigeration cycle apparatus |
US20150165863A1 (en) * | 2012-09-13 | 2015-06-18 | Nissan Motor Co. Ltd. | Heat-pump-type air-conditioning device |
US20180058735A1 (en) * | 2015-07-03 | 2018-03-01 | Mitsubishi Electric Corporation | Heat pump device |
US20180058734A1 (en) * | 2015-07-03 | 2018-03-01 | Mitsubishi Electric Corporation | Heat pump device |
US20210088265A1 (en) * | 2018-06-12 | 2021-03-25 | Midea Group Co., Ltd. | Mobile Air Conditioner |
US11460225B2 (en) * | 2017-06-23 | 2022-10-04 | Jack D. Dowdy, III | Power saving apparatuses for refrigeration |
DE102022100028A1 (en) | 2022-01-03 | 2023-07-06 | Ford Global Technologies, Llc | Heat pump for an air conditioning system in a vehicle |
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US1803074A (en) * | 1929-06-14 | 1931-04-28 | Edmund E Allyne | Refrigerating apparatus |
US2645099A (en) * | 1950-09-29 | 1953-07-14 | Bailey Perkins Inc | Capillary tube assembly for refrigerators |
US2950608A (en) * | 1959-12-23 | 1960-08-30 | Gen Electric | Refrigeration system |
US3012414A (en) * | 1960-05-09 | 1961-12-12 | Porte Francis L La | Refrigeration apparatus with liquid trapping means |
US3084523A (en) * | 1962-01-30 | 1963-04-09 | Refrigeration Research | Refrigeration component |
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US1803074A (en) * | 1929-06-14 | 1931-04-28 | Edmund E Allyne | Refrigerating apparatus |
US2645099A (en) * | 1950-09-29 | 1953-07-14 | Bailey Perkins Inc | Capillary tube assembly for refrigerators |
US2950608A (en) * | 1959-12-23 | 1960-08-30 | Gen Electric | Refrigeration system |
US3012414A (en) * | 1960-05-09 | 1961-12-12 | Porte Francis L La | Refrigeration apparatus with liquid trapping means |
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Cited By (39)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4169361A (en) * | 1975-10-28 | 1979-10-02 | Linde Aktiengesellschaft | Method of and apparatus for the generation of cold |
US4216660A (en) * | 1978-05-04 | 1980-08-12 | T.E.S., Inc. | Heat generator |
US4208887A (en) * | 1979-01-22 | 1980-06-24 | Tecumseh Products Company | Suction accumulator having heat exchanger |
US4238932A (en) * | 1979-07-23 | 1980-12-16 | General Electric Company | High pressure charge storage system |
FR2529313A1 (en) * | 1982-06-29 | 1983-12-30 | Philips Nv | MOTOR DRIVEN COMPRESSION TYPE REFRIGERATOR CIRCUIT |
EP0144917A2 (en) * | 1983-12-13 | 1985-06-19 | Audi Ag | Air conditioning device |
EP0144917A3 (en) * | 1983-12-13 | 1987-06-16 | Audi Ag | Air conditioning device |
US4583377A (en) * | 1984-05-24 | 1986-04-22 | Thermo King Corporation | Refrigerant suction accumulator, especially for transport refrigeration unit |
EP0407106A1 (en) * | 1989-07-03 | 1991-01-09 | K-Whit Tools, Inc. | Refrigerant recovery device |
US5168721A (en) * | 1991-03-28 | 1992-12-08 | K-Whit Tools, Inc. | Refrigerant recovery device |
US5335512A (en) * | 1991-03-28 | 1994-08-09 | K-Whit Tools, Inc. | Refrigerant recovery device |
US5231841A (en) * | 1991-12-19 | 1993-08-03 | Mcclelland Ralph A | Refrigerant charging system and control system therefor |
US5317903A (en) * | 1991-12-19 | 1994-06-07 | K-Whit Tools, Inc. | Refrigerant charging system controlled by charging pressure change rate |
US5222369A (en) * | 1991-12-31 | 1993-06-29 | K-Whit Tools, Inc. | Refrigerant recovery device with vacuum operated check valve |
US5245833A (en) * | 1992-05-19 | 1993-09-21 | Martin Marietta Energy Systems, Inc. | Liquid over-feeding air conditioning system and method |
US5491981A (en) * | 1993-09-15 | 1996-02-20 | Samsung Electronics Co., Ltd. | Refrigeration cycle having an evaporator for evaporating residual liquid refrigerant |
EP0663578A1 (en) | 1994-01-15 | 1995-07-19 | Hussmann (Europe) Limited | Refrigeration apparatus |
US5622055A (en) * | 1995-03-22 | 1997-04-22 | Martin Marietta Energy Systems, Inc. | Liquid over-feeding refrigeration system and method with integrated accumulator-expander-heat exchanger |
US5758506A (en) * | 1996-07-03 | 1998-06-02 | White Industries, Llc | Method and apparatus for servicing automotive refrigeration systems |
FR2752921A1 (en) * | 1996-08-31 | 1998-03-06 | Behr Gmbh & Co | COLLECTOR HEAT EXCHANGER ASSEMBLY AND AIR CONDITIONING INSTALLATION EQUIPPED WITH SUCH ASSEMBLY |
FR2792965A1 (en) * | 1999-04-30 | 2000-11-03 | Peugeot Citroen Automobiles Sa | Thermal heat exchanger assembly for an automobile air conditioning system, utilises an open circuit |
KR100484243B1 (en) * | 2000-10-05 | 2005-04-20 | 진금수 | Heat pump system |
US20060010905A1 (en) * | 2004-07-09 | 2006-01-19 | Junjie Gu | Refrigeration system |
US7685839B2 (en) * | 2004-07-09 | 2010-03-30 | Junjie Gu | Refrigeration system |
WO2007082844A2 (en) * | 2006-01-13 | 2007-07-26 | BSH Bosch und Siemens Hausgeräte GmbH | Cooling system for an electric refrigerator |
WO2007082844A3 (en) * | 2006-01-13 | 2007-09-20 | Bsh Bosch Siemens Hausgeraete | Cooling system for an electric refrigerator |
WO2009010183A1 (en) * | 2007-07-13 | 2009-01-22 | Daimler Ag | Heat exchanger |
US20150165863A1 (en) * | 2012-09-13 | 2015-06-18 | Nissan Motor Co. Ltd. | Heat-pump-type air-conditioning device |
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