US9271332B2 - Heating device - Google Patents
Heating device Download PDFInfo
- Publication number
- US9271332B2 US9271332B2 US14/400,327 US201314400327A US9271332B2 US 9271332 B2 US9271332 B2 US 9271332B2 US 201314400327 A US201314400327 A US 201314400327A US 9271332 B2 US9271332 B2 US 9271332B2
- Authority
- US
- United States
- Prior art keywords
- heating
- temperature
- heating device
- passage
- heater
- 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.)
- Active
Links
Images
Classifications
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B1/00—Details of electric heating devices
- H05B1/02—Automatic switching arrangements specially adapted to apparatus ; Control of heating devices
- H05B1/0202—Switches
-
- 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
- B60H1/22—Heating, cooling or ventilating [HVAC] devices the heat being derived otherwise than from the propulsion plant
- B60H1/2215—Heating, cooling or ventilating [HVAC] devices the heat being derived otherwise than from the propulsion plant the heat being derived from electric heaters
- B60H1/2218—Heating, cooling or ventilating [HVAC] devices the heat being derived otherwise than from the propulsion plant the heat being derived from electric heaters controlling the operation of electric heaters
-
- 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
- B60H1/22—Heating, cooling or ventilating [HVAC] devices the heat being derived otherwise than from the propulsion plant
- B60H1/2215—Heating, cooling or ventilating [HVAC] devices the heat being derived otherwise than from the propulsion plant the heat being derived from electric heaters
- B60H1/2221—Heating, cooling or ventilating [HVAC] devices the heat being derived otherwise than from the propulsion plant the heat being derived from electric heaters arrangements of electric heaters for heating an intermediate liquid
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B1/00—Details of electric heating devices
- H05B1/02—Automatic switching arrangements specially adapted to apparatus ; Control of heating devices
- H05B1/0227—Applications
- H05B1/023—Industrial applications
- H05B1/0236—Industrial applications for vehicles
-
- 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
- B60H1/22—Heating, cooling or ventilating [HVAC] devices the heat being derived otherwise than from the propulsion plant
- B60H2001/2228—Heating, cooling or ventilating [HVAC] devices the heat being derived otherwise than from the propulsion plant controlling the operation of heaters
- B60H2001/2231—Heating, cooling or ventilating [HVAC] devices the heat being derived otherwise than from the propulsion plant controlling the operation of heaters for proper or safe operation of the heater
-
- 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
- B60H1/22—Heating, cooling or ventilating [HVAC] devices the heat being derived otherwise than from the propulsion plant
- B60H2001/2246—Heating, cooling or ventilating [HVAC] devices the heat being derived otherwise than from the propulsion plant obtaining information from a variable, e.g. by means of a sensor
- B60H2001/2256—Heating, cooling or ventilating [HVAC] devices the heat being derived otherwise than from the propulsion plant obtaining information from a variable, e.g. by means of a sensor related to the operation of the heater itself, e.g. flame detection or overheating
-
- 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
- B60H1/22—Heating, cooling or ventilating [HVAC] devices the heat being derived otherwise than from the propulsion plant
- B60H2001/2259—Heating, cooling or ventilating [HVAC] devices the heat being derived otherwise than from the propulsion plant output of a control signal
- B60H2001/2262—Heating, cooling or ventilating [HVAC] devices the heat being derived otherwise than from the propulsion plant output of a control signal related to the period of on/off time of the heater
Definitions
- a terminal 12 molded from silicon, glass and the like by casting is provided at one end opening of the metal pipe 6 .
- a lead wire 14 connected to the heating wire 8 is pulled through the terminal 12 .
- the lead wire 14 and an external power unit 3 electrically connected to the lead wire 14 constitute an energization circuit for providing the heating wire 8 with electricity.
- only one heater 2 is shown in FIG. 1 , two or more heaters 2 may be provided.
- a heating device of this kind includes a heater having a heating portion which generates heat by energization; a housing which contains the heating portion and forms a passage for a heating medium between the housing and the heating portion; a temperature detection means for detecting the temperature of the heating medium in the passage; and an energization interrupting means for interrupting the carrying of current to the heater depending on the detected temperature of the heating medium.
- Patent Document 1 discloses a heating device which is provided with a thermostat or a thermal fuse at the outside of the housing, on a surface shared with the heating face of the heating portion. Thus, the heating device prevents accidental heating of the passage with no heating medium while preventing a malfunction in the thermal fuse.
- Patent Document 2 discloses a heating device which is provided with a thermal fuse at the current-carrying terminal. Heat transferred from the heating portion via the current-carrying terminal causes the heating device to interrupt the carrying of current to the heater regardless of the level of the heating medium in the passage so as to prevent accidental heating of an empty passage.
- Patent Document 3 discloses a heating device which is provided with a convex on the inside of the housing.
- the heating device prevents accidental heating of the passage with no heating medium by placing a thermal fuse into contact with the heating portion via the convex of the housing.
- a heating device is unable to stop the heater swiftly due to a deterioration in the responsiveness of the energization interrupting means because the heating device has its temperature detection means placed into contact with a non-heating portion of the heater located outside the housing, and the carrying of current to the heater is interrupted based on heat transferred via the non-heating portion. For that reason, the accuracy of detection of accidental heating of an empty passage can be decreased, leading to an occurrence of smoke or fire.
- the present invention has been made based on the above-mentioned circumstances, and an object of the present invention is to provide a heating device capable of detecting accidental heating of an empty passage with high accuracy by detecting the temperature of the heating medium, interrupting energization with excellent responsiveness, and securely preventing an occurrence of smoke or fire so as to improve reliability of the heating device.
- a heating device of the present invention includes a heater having a heating portion which generates heat by energization; a housing which contains the heating portion and forms a passage for a heating medium between the housing and the heating portion; a temperature detection means for detecting the temperature of the heating medium in the passage; and an energization interrupting means for interrupting the carrying of current to the heater depending on the temperature of the heating medium detected by the temperature detection means.
- the temperature detection means is brought into contact with the heating portion.
- the temperature detection means should come into surface contact with the heating portion.
- the temperature detection means should be connected to the housing via a seal member.
- a plurality of the seal members should be provided.
- the heating device includes a temperature detection means for detecting the temperature of a heating medium in a passage for the heating medium, and an energization interrupting means for interrupting the carrying of current to a heater depending on the temperature of the heating medium detected by the temperature detection means.
- the heating device is capable of detecting accidental heating of an empty passage with high accuracy by detecting the temperature of the heating medium, interrupting energization with excellent responsiveness and securely preventing an occurrence of smoke or fire because the temperature detection means is brought into contact with a heating portion of the heater.
- FIG. 1 is a longitudinal sectional view of a heating device in accordance with an embodiment of the present invention.
- FIG. 2 is a cross-sectional view illustrating a principal part of the heating device taken from line A-A in FIG. 1 .
- FIG. 3 is a cross-sectional view illustrating a principal part of a heating device in accordance with a variation of the present invention, taken from line A-A in FIG. 1 .
- FIG. 4 is a cross-sectional view illustrating a principal part of a heating device in accordance with another variation of the present invention, taken from line A-A in FIG. 1 .
- a heating device 1 includes a heater 2 and a case (housing) 4 which contains the heater 2 .
- the heater 2 is an electrothermal heater which generates heat by energization.
- the heater 2 is composed of a bottomed cylindrical metal pipe 6 (heating portion).
- a coiled heating wire 8 such as a nichrome wire is inserted in the metal pipe 6 , and a heat-resistant insulating material 10 , such as magnesium oxide, having high electrical insulation properties and thermal conductivity is filled into the metal pipe 6 by pressure to seal the heating wire 8 .
- a terminal 12 molded from silicon, glass and the like by casting is provided at one end opening of the metal pipe 6 .
- a lead wire 14 connected to the heating wire 8 is pulled through the terminal 12 .
- the lead wire 14 and an external power unit (not shown) electrically connected to the lead wire 14 constitute an energization circuit (not shown) for providing the heating wire 8 with electricity.
- an energization circuit not shown for providing the heating wire 8 with electricity.
- the case 4 is composed of one or more cast bodies.
- the case 4 contains the heater 2 by airtightly surrounding vicinities of both ends of the metal pipe 6 through O-rings 16 . Clearance is created between an inner surface 4 a of the case 4 and an outer circumference 6 a of the metal pipe 6 .
- the clearance serves as a passage 18 into which a heating medium as a LLC (coolant, antifreeze), such as ethylene glycol, flows.
- An inlet pipe 20 and an outlet pipe 22 for the heating medium are protrusively provided at appropriate positions on an outer surface 4 b of the case 4 so that the both pipes communicate with the passage.
- the heating device 1 having such a schematic configuration, which is to be mounted, for example, in a hybrid car, an electric vehicle and the like, is used to heat a coolant or the like circulating through a refrigeration circuit in an air conditioning apparatus for a vehicle, serving as an auxiliary heat source for providing heat to make up a shortage in waste heat out of the engine in the case of a hybrid car, or as an alternative heat source for providing heat in place of the engine that does not exist in the case of an electric vehicle.
- an LLC circulating in a cooling water circuit for cooling an engine flows via the inlet pipe 20 into the passage 18 , and the heater 2 heats the LLC.
- Heat from the LLC which has been heated by the engine and the heating device 1 is used to heat a coolant circulating through a refrigeration circuit provided in an air conditioning apparatus for the vehicle.
- the heated coolant is used to heat and cool the air in the vehicle cabin.
- the LLC which has been used for heating the coolant is discharged from the passage 18 via the outlet pipe 22 and returned to the cooling water circuit. Then, the LLC is again used to cool the engine.
- a through-hole 24 is bored into the case 4 in a direction perpendicular to the longitudinal direction of the heater 2 .
- a temperature sensor 26 (temperature detection means) for detecting the temperature of a LLC which flows through the passage 18 is inserted in the through-hole 24 .
- the temperature sensor 26 is a roughly cylindrical shaped thermistor.
- a flat end face 30 of a temperature measurement end 28 of the temperature sensor 26 comes into line contact with the outer circumference 6 a of the metal pipe 6 of the heater 2 . This enables the temperature sensor 26 to detect not only the temperature of the LLC but also the surface temperature of the metal pipe 6 , i.e. the heating portion of the heater 2 .
- Two annular grooves 32 are formed on a side 26 a of the temperature sensor 26 .
- An O-ring 34 (seal member) is fitted to each annular groove 32 .
- the temperature sensor 26 is airtightly connected to and secured to the through-hole 24 through each O-ring 34 .
- the temperature sensor 26 is electrically connected to an inverter 5 through a lead wire 38 pulled out of its outer end 36 .
- the inverter 5 controls energization (energization interrupting means) by turning on and off the carrying of current to the heater 2 in response to the temperature of the LLC and/or the surface temperature of the metal pipe 6 detected with the temperature sensor 26 through the power unit 3 and the energization circuit described above.
- the temperature of the LLC is controlled within a proper range by the use of the temperature sensor 26 under this energization control. Thus, the temperature of the heater 2 does not abnormally rise.
- the heating device 1 having the temperature sensor 26 which is out of contact with the metal pipe 6 and capable of detecting only the temperature of the LLC in the case of a conventional heating device, can undergo a deterioration in the responsiveness of the temperature sensor 26 due to the heat-insulation effect of the air surrounding the temperature sensor 26 , leading to a delay in the detection of such accidental heating. As a result, temperature in the passage 18 can go on to increase, causing an occurrence of smoke or fire in the heating device 1 .
- the present embodiment provides energization control by taking advantage of a difference in heat transfer property between the LLC as a fluid and the air as a gas, that is, the temperature of the LLC becomes dominant when the LLC exists in the passage 18 and the temperature of the heater 2 becomes dominant when no or little LLC exists in the passage 18 , as the temperature sensor 26 is brought into direct contact with the outer circumference 6 a of the metal pipe 6 , i.e. the heating portion of the heater 2 , while the temperature sensor 26 is placed in the passage 18 where the LLC flows.
- the present embodiment as described above provides normal energization control without stopping the heating device 1 for protection when an LLC exists in the passage 18 while the present embodiment provides error processing to stop promptly the heating device 1 for protection when no or little LLC exists in the passage 18 .
- the heating device 1 that achieves high reliability as it promptly detects accidental heating of an empty passage with high accuracy and prevents reliably an occurrence of smoke or fire while performing normal energization control by the use of the temperature sensor 26 .
- each O-ring 34 is fitted to each of the annular grooves 32 formed on the side 26 a of the temperature sensor 26 , the temperature sensor 26 is airtightly connected to and secured to the through-hole 24 through each of the O-rings 34 .
- So-called dual seals provide the prevention of leakage of the LLC from the case 4 . This prevents an occurrence of accidental heating of an empty passage caused by a decrease in the amount of the LLC in the passage 18 , leading to the heating device 1 of higher reliability. Even if only one O-ring 34 is fitted to the temperature sensor 26 , leakage of the LLC from the case 4 can be prevented.
- the present invention is not limited to the embodiment of the heating device 1 described above, but various alterations may occur.
- the temperature measurement end 28 of the temperature sensor 26 comes into line contact with the outer circumference 6 a of the metal pipe 6 . It is, however, preferable that the area of contact between the temperature sensor 26 and the metal pipe 6 be larger so as to make larger the heat transfer area between the temperature sensor 26 and the metal pipe 6 .
- a flat surface 40 is formed on a part of the outer circumference 6 a of the metal pipe 6 , and the end face 30 of the temperature measurement end 28 is brought into contact with the flat surface 40 . Since the temperature sensor 26 is placed into surface contact with the metal pipe 6 , the heat transfer area between the temperature sensor 26 and the metal pipe 6 gets larger. This brings about a further improvement in the responsiveness of the energization interrupting means and provides the detection of accidental heating of an empty passage with higher accuracy.
- a concave curved surface 42 having a radius almost equal to the curvature radius of the outer circumference 6 a of the metal pipe 6 may be formed on the end face 30 of the temperature measurement end 28 of the temperature sensor 26 , and the outer circumference 6 a of the metal pipe 6 may be brought into contact with the concave curved surface 42 so that the temperature sensor 26 is placed into surface contact with the metal pipe 6 .
- one O-ring 34 is fitted to each of the two annular grooves 32 on the side 26 a of the temperature sensor 26 .
- two O-rings 34 are provided.
- the number of the O-rings 34 is not limited to this example. Nevertheless, providing at least two O-rings 34 produces not only the effect of the dual seals described above but also an aligning effect in keeping the temperature sensor 26 from being out of alignment with respect to the through-hole 24 . Consequently, the responsiveness of the energization interrupting means and the accuracy in the detection of accidental heating of an empty passage can be reliably increased.
- the temperature sensor 26 acts as a temperature detection means and the inverter for controlling energization acts as an energization interrupting means in the embodiment described above, a thermal fuse or the like incorporating both the temperature detection means and the energization interrupting means may be brought into contact with the metal pipe 6 .
- the heating device 1 is not limited to use in a car air conditioning apparatus of a hybrid car or an electric vehicle, but can be used as a heat source for other purposes.
Abstract
Description
- Patent Document 1: Japanese Patent No. 4561319
- Patent Document 2: Japanese Patent No. 4293091
- Patent Document 3: Japanese Patent No. 3395571
-
- 1 heating device
- 2 heater
- 4 case (housing)
- 6 metal pipe (heating portion)
- 18 passage
- 26 temperature sensor (temperature detection means)
- 34 O-ring (seal member)
Claims (6)
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2012-108323 | 2012-05-10 | ||
JP2012108323A JP6029850B2 (en) | 2012-05-10 | 2012-05-10 | Heating device |
PCT/JP2013/062920 WO2013168733A1 (en) | 2012-05-10 | 2013-05-08 | Heating device |
Publications (2)
Publication Number | Publication Date |
---|---|
US20150122798A1 US20150122798A1 (en) | 2015-05-07 |
US9271332B2 true US9271332B2 (en) | 2016-02-23 |
Family
ID=49550767
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US14/400,327 Active US9271332B2 (en) | 2012-05-10 | 2013-05-08 | Heating device |
Country Status (5)
Country | Link |
---|---|
US (1) | US9271332B2 (en) |
JP (1) | JP6029850B2 (en) |
CN (1) | CN104272862B (en) |
DE (1) | DE112013002417T5 (en) |
WO (1) | WO2013168733A1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US11649790B1 (en) * | 2022-03-21 | 2023-05-16 | Weichai Power Co., Ltd. | Control method and apparatus applied to controller |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2015116906A (en) * | 2013-12-18 | 2015-06-25 | カルソニックカンセイ株式会社 | Vehicle refrigerant heating device |
JP2015138615A (en) * | 2014-01-21 | 2015-07-30 | カルソニックカンセイ株式会社 | liquid heating device |
JP5795822B2 (en) * | 2014-12-08 | 2015-10-14 | カルソニックカンセイ株式会社 | Hot water heating device |
JP6431831B2 (en) * | 2015-09-09 | 2018-11-28 | カルソニックカンセイ株式会社 | Fluid heating apparatus and manufacturing method thereof |
FR3062601B1 (en) * | 2017-02-06 | 2019-06-07 | Valeo Systemes Thermiques | ELECTRICAL HEATING DEVICE, HEATING CIRCUIT, AND CORRESPONDING TEMPERATURE MANAGEMENT METHOD |
PL3702693T3 (en) * | 2019-02-28 | 2022-02-21 | Gerdes Holding Gmbh & Co. Kg | Continuous-flow heater with a fluid contact-side safety temperature limiting device |
CN114938640A (en) * | 2019-12-12 | 2022-08-23 | 法雷奥热系统公司 | Electric heating device, in particular for a motor vehicle |
Citations (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4197581A (en) * | 1978-04-12 | 1980-04-08 | General Electric Company | Control system for and method of controlling a cooking appliance |
JPS61122453A (en) | 1984-11-19 | 1986-06-10 | Matsushita Electric Ind Co Ltd | Electric tap-controlled water heater |
JPH07199701A (en) | 1993-12-28 | 1995-08-04 | Canon Inc | Heating device |
JPH0945464A (en) | 1995-07-31 | 1997-02-14 | Ngk Spark Plug Co Ltd | Glow plug |
JPH10309935A (en) | 1997-05-12 | 1998-11-24 | Matsushita Electric Ind Co Ltd | Electric hot water circulating device for automobile |
JP2000035248A (en) | 1998-07-17 | 2000-02-02 | Komatsu Electronics Kk | Chemical heating apparatus |
US6665492B1 (en) * | 1997-03-19 | 2003-12-16 | Northrop Grumman | High-velocity electrically heated air impingement apparatus with heater control responsive to two temperature sensors |
JP2006064327A (en) | 2004-08-30 | 2006-03-09 | Matsushita Electric Ind Co Ltd | Fluid heating device and washer therewith |
JP2006132857A (en) | 2004-11-08 | 2006-05-25 | Matsushita Electric Ind Co Ltd | Fluid heating device and sanitary washing device equipped with the same |
US7312420B2 (en) * | 2005-09-20 | 2007-12-25 | Lexmark International, Inc. | Switching device and system |
US7472695B2 (en) * | 2003-07-28 | 2009-01-06 | Phillips & Temro Industries Inc. | Controller for air intake heater |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3839244C2 (en) * | 1988-02-24 | 1993-12-09 | Webasto Ag Fahrzeugtechnik | Heater, in particular vehicle auxiliary heater |
JP3519264B2 (en) * | 1997-02-17 | 2004-04-12 | 松下電器産業株式会社 | Automotive air conditioning controller |
DE10051867A1 (en) * | 2000-10-19 | 2002-04-25 | Eberspaecher J Gmbh & Co | Heating device, especially for motor vehicle use, has a temperature sensor that is integral with a temperature controller circuit, making assembly and removal easier and removing the need for additional cabling |
JP2007010255A (en) * | 2005-07-01 | 2007-01-18 | Matsushita Electric Ind Co Ltd | Fluid heating device, and hot water supply device using it |
JP2011144976A (en) * | 2010-01-13 | 2011-07-28 | Sanden Corp | Heating device |
JP5852774B2 (en) * | 2010-07-14 | 2016-02-03 | 株式会社堀場エステック | Liquid sample heating vaporizer |
-
2012
- 2012-05-10 JP JP2012108323A patent/JP6029850B2/en active Active
-
2013
- 2013-05-08 CN CN201380024143.XA patent/CN104272862B/en active Active
- 2013-05-08 US US14/400,327 patent/US9271332B2/en active Active
- 2013-05-08 WO PCT/JP2013/062920 patent/WO2013168733A1/en active Application Filing
- 2013-05-08 DE DE201311002417 patent/DE112013002417T5/en active Pending
Patent Citations (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4197581A (en) * | 1978-04-12 | 1980-04-08 | General Electric Company | Control system for and method of controlling a cooking appliance |
JPS61122453A (en) | 1984-11-19 | 1986-06-10 | Matsushita Electric Ind Co Ltd | Electric tap-controlled water heater |
JPH07199701A (en) | 1993-12-28 | 1995-08-04 | Canon Inc | Heating device |
JPH0945464A (en) | 1995-07-31 | 1997-02-14 | Ngk Spark Plug Co Ltd | Glow plug |
US6665492B1 (en) * | 1997-03-19 | 2003-12-16 | Northrop Grumman | High-velocity electrically heated air impingement apparatus with heater control responsive to two temperature sensors |
JPH10309935A (en) | 1997-05-12 | 1998-11-24 | Matsushita Electric Ind Co Ltd | Electric hot water circulating device for automobile |
JP2000035248A (en) | 1998-07-17 | 2000-02-02 | Komatsu Electronics Kk | Chemical heating apparatus |
US7472695B2 (en) * | 2003-07-28 | 2009-01-06 | Phillips & Temro Industries Inc. | Controller for air intake heater |
JP2006064327A (en) | 2004-08-30 | 2006-03-09 | Matsushita Electric Ind Co Ltd | Fluid heating device and washer therewith |
JP2006132857A (en) | 2004-11-08 | 2006-05-25 | Matsushita Electric Ind Co Ltd | Fluid heating device and sanitary washing device equipped with the same |
US7312420B2 (en) * | 2005-09-20 | 2007-12-25 | Lexmark International, Inc. | Switching device and system |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US11649790B1 (en) * | 2022-03-21 | 2023-05-16 | Weichai Power Co., Ltd. | Control method and apparatus applied to controller |
Also Published As
Publication number | Publication date |
---|---|
CN104272862A (en) | 2015-01-07 |
DE112013002417T5 (en) | 2015-01-29 |
JP2013235758A (en) | 2013-11-21 |
CN104272862B (en) | 2016-08-24 |
JP6029850B2 (en) | 2016-11-24 |
WO2013168733A1 (en) | 2013-11-14 |
US20150122798A1 (en) | 2015-05-07 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US9271332B2 (en) | Heating device | |
US9226340B2 (en) | Heating device | |
US20150131980A1 (en) | Heating Device | |
JP2010121785A (en) | Storage type water heater | |
WO2011086911A1 (en) | Heating device | |
WO2011086909A1 (en) | Heating device | |
WO2013157430A1 (en) | Heating apparatus | |
US10476090B2 (en) | Fuel cell system | |
WO2011086910A1 (en) | Heating device | |
KR20160091002A (en) | Safety control method and apparatus of the cooling-water heating type heater | |
JP2015512121A (en) | Vehicle heater and method of manufacturing vehicle heater | |
KR101894465B1 (en) | Cooling-water heating type heater | |
KR102053024B1 (en) | Cooling-water heating type heater | |
WO2013186904A1 (en) | Dew condensation detection device, cooling system, and method for controlling cooling medium flow rate | |
KR101998262B1 (en) | Cooling-water heating type heater | |
KR101592747B1 (en) | Device sensing overheat of heater for fuel cell vehicle | |
KR20150098879A (en) | Cooling-water heating type heater | |
KR20210025245A (en) | Cooling water heating device for battery with heat transfer structure for improving thermal fuse reaction rate | |
KR102040483B1 (en) | Cooling-water heating type heater | |
KR101973522B1 (en) | Coolant heater | |
JP2015020605A (en) | Vehicle heater | |
JP2015025594A (en) | Heating apparatus | |
JP2014224615A (en) | Water heater | |
JP2012136154A (en) | Vehicle heating device | |
JP2010220953A (en) | Heated toilet seat |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
AS | Assignment |
Owner name: SANDEN CORPORATION, JAPAN Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:MAEMURA, YOSHINOBU;REEL/FRAME:034151/0898 Effective date: 20141017 |
|
FEPP | Fee payment procedure |
Free format text: PAYOR NUMBER ASSIGNED (ORIGINAL EVENT CODE: ASPN); ENTITY STATUS OF PATENT OWNER: LARGE ENTITY |
|
STCF | Information on status: patent grant |
Free format text: PATENTED CASE |
|
AS | Assignment |
Owner name: SANDEN HOLDINGS CORPORATION, JAPAN Free format text: CHANGE OF NAME;ASSIGNOR:SANDEN CORPORATION;REEL/FRAME:038489/0677 Effective date: 20150402 |
|
AS | Assignment |
Owner name: SANDEN HOLDINGS CORPORATION, JAPAN Free format text: CORRECTIVE ASSIGNMENT TO CORRECT THE PROPERTY NUMBERS PREVIOUSLY RECORDED AT REEL: 038489 FRAME: 0677. ASSIGNOR(S) HEREBY CONFIRMS THE ASSIGNMENT;ASSIGNOR:SANDEN CORPORATION;REEL/FRAME:047208/0635 Effective date: 20150402 |
|
MAFP | Maintenance fee payment |
Free format text: PAYMENT OF MAINTENANCE FEE, 4TH YEAR, LARGE ENTITY (ORIGINAL EVENT CODE: M1551); ENTITY STATUS OF PATENT OWNER: LARGE ENTITY Year of fee payment: 4 |
|
AS | Assignment |
Owner name: SANDEN HOLDINGS CORPORATION, JAPAN Free format text: CORRECTIVE ASSIGNMENT TO CORRECT THE TYPOGRAPHICAL ERRORS IN PATENT NOS. 6129293, 7574813, 8238525, 8083454, D545888, D467946, D573242, D487173, AND REMOVE 8750534 PREVIOUSLY RECORDED ON REEL 047208 FRAME 0635. ASSIGNOR(S) HEREBY CONFIRMS THE CHANGE OF NAME;ASSIGNOR:SANDEN CORPORATION;REEL/FRAME:053545/0524 Effective date: 20150402 |
|
AS | Assignment |
Owner name: SANDEN CORPORATION, JAPAN Free format text: CHANGE OF NAME;ASSIGNOR:SANDEN HOLDINGS CORPORATION;REEL/FRAME:061296/0529 Effective date: 20220101 |
|
MAFP | Maintenance fee payment |
Free format text: PAYMENT OF MAINTENANCE FEE, 8TH YEAR, LARGE ENTITY (ORIGINAL EVENT CODE: M1552); ENTITY STATUS OF PATENT OWNER: LARGE ENTITY Year of fee payment: 8 |