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公开(公告)号：US11014430B2
公开(公告)日：2021-05-25
申请号：US16285269
申请日：2019-02-26
Applicant: DENSO CORPORATION
Inventor： Koji Miura , Yoshiki Kato , Masayuki Takeuchi , Nobuyuki Hashimura , Keigo Sato , Norihiko Enomoto , Kengo Sugimura , Ariel Marasigan
Abstract: A refrigeration cycle device has a compressor, a radiator, a decompressor, an evaporator, a heat medium cooling evaporator, a cooling target device, a detector, and a controller. The heat medium cooling evaporator cools a cooling heat medium by performing a heat exchange between the refrigerant decompressed in the decompressor and the cooling heat medium. The cooling heat medium cools the cooling target device. The detector detects a subcooling state of the cooling target device having a temperature lower than or equal to a reference temperature. Upon the detection of the subcooling state in the cooling target device by the detector, the controller increases the degree of superheat of the refrigerant flowing out of the heat medium cooling heat exchanger as compared to the degree of superheat of the refrigerant flowing out of the heat medium cooling heat exchanger when the detector does not detect the subcooling state.
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公开(公告)号：US10989447B2
公开(公告)日：2021-04-27
申请号：US16256202
申请日：2019-01-24
Applicant: DENSO CORPORATION
Inventor： Koji Miura , Yoshiki Kato , Masayuki Takeuchi , Nobuyuki Hashimura , Keigo Sato , Norihiko Enomoto , Kengo Sugimura , Ariel Marasigan
Abstract: A refrigeration cycle device includes a compressor, a condenser, a first decompressor, an outside heat exchanger, and an evaporator. A predetermined part of a refrigerant passage from the condenser to the first decompressor through which the refrigerant flows is a condenser outlet portion. A predetermined part of a refrigerant passage from the first decompressor to the outside heat exchanger through which the refrigerant flows is an outside heat exchanger inlet portion. A predetermined part of a refrigerant passage from the outside heat exchanger to the second decompressor through which the refrigerant flows is an outside heat exchanger outlet portion. A volume capacity of the condenser outlet portion is larger than a volume capacity of the outside heat exchanger inlet portion. According to the refrigeration cycle device, preferable coefficient of performance of cycle can be achieved in different operation modes.
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Patent Agency Ranking
公开(公告)号：US10899195B2
公开(公告)日：2021-01-26
申请号：US16082294
申请日：2017-02-24
Applicant: DENSO CORPORATION
Inventor： Koji Miura , Yoshiki Kato , Nobuyuki Hashimura , Ariel Marasigan
Abstract: A refrigeration cycle device includes a high-pressure side heat exchanger, a low-pressure side heat exchanger, a temperature-adjustment target device to be temperature-adjusted with a high-pressure side refrigerant, an exterior heat exchanger exchanging heat between the high-pressure side refrigerant or a low-pressure side refrigerant and outside air, a switching portion configured to switch between a heat dissipation mode in which the high-pressure side refrigerant dissipates heat into the outside air in the exterior heat exchanger and a heat absorption mode in which the low-pressure side refrigerant absorbs heat from the outside air in the exterior heat exchanger, a cooling request operation portion, and a controller configured to control an operation of the switching portion to perform the heat absorption mode when the cooling request operation portion operates to request cooling of the air and the temperature-adjustment target device needs to be warmed up.
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公开(公告)号：US10940740B2
公开(公告)日：2021-03-09
申请号：US15744598
申请日：2016-10-27
Applicant: DENSO CORPORATION
Inventor： Kengo Sugimura , Yoshiki Katoh , Masayuki Takeuchi , Koji Miura , Norihiko Enomoto , Keigo Satou , Ariel Marasigan , Nobuyuki Hashimura
Abstract: In a heat pump system, when a heat-shock determination portion determines that a difference between a coolant temperature in a coolant flow path and a coolant temperature in a heat source flow path is equal to or higher than a predetermined temperature, a flow-path switching portion mixes the respective coolants flowing through at least a bypass flow path and the heat source flow path together to flow into the coolant flow path.
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公开(公告)号：US10759257B2
公开(公告)日：2020-09-01
申请号：US15743311
申请日：2016-06-21
Applicant: DENSO CORPORATION
Inventor： Yoshiki Katoh , Koji Miura , Kengo Sugimura , Masayuki Takeuchi , Keigo Satou , Norihiko Enomoto , Nobuyuki Hashimura
Abstract: A refrigeration cycle device includes a compressor, an air-refrigerant heat exchanger that exchanges heat between air and refrigerant, an expansion valve decompressing the refrigerant, a heat medium-refrigerant heat exchanger that exchanges heat between a heat medium and the refrigerant, a cold-heat utilization device that utilizes cold heat of the heat medium, and a hot-heat utilization device that utilizes hot heat of the heat medium. A refrigerant flow switching valve is provided to switch between a heat-medium cooling mode of cooling the heat medium in the heat medium-refrigerant heat exchanger, and a heat-medium heating mode of heating the heat medium in the heat medium-refrigerant heat exchanger. In addition, a heat medium flow switching device is provided such that, in the heat-medium cooling mode, the heat medium circulates between the heat medium-refrigerant heat exchanger and the cold-heat utilization device, and that in the heat-medium heating mode, the heat medium circulates between the heat medium-refrigerant heat exchanger and the hot-heat utilization device.
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公开(公告)号：US10723203B2
公开(公告)日：2020-07-28
申请号：US16060036
申请日：2016-10-06
Applicant: DENSO CORPORATION
Inventor： Yoshiki Kato , Nobuyuki Hashimura , Koji Miura , Norihiko Enomoto , Kengo Sugimura , Keigo Sato , Masayuki Takeuchi , Ariel Marasigan
Abstract: A refrigeration cycle device includes: a first expansion valve that decompresses a refrigerant flowing out of a high-pressure side heat exchanger; an exterior heat exchanger that exchanges heat between the refrigerant flowing out of the first expansion valve and outside air; a second expansion valve that decompresses the refrigerant flowing out of the exterior heat exchanger; a low-pressure side heat exchanger arranged in series with the exterior heat exchanger; a cooler core that exchanges heat between the heat medium cooled by the low-pressure side heat exchanger and air to be blown into a vehicle interior to cool the air; and a controller configured to switch between a heat absorption mode and a heat dissipation mode by adjusting an amount of decompression in each of the first expansion valve and the second expansion valve.
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公开(公告)号：US10717341B2
公开(公告)日：2020-07-21
申请号：US15757047
申请日：2016-08-25
Applicant: DENSO CORPORATION
Inventor： Kengo Sugimura , Yoshiki Kato , Masayuki Takeuchi , Keigo Sato , Koji Miura , Norihiko Enomoto , Ariel Marasigan , Nobuyuki Hashimura
IPC: B60H1/02 , B60H1/32 , B60H1/06 , F01P7/16 , F01P3/20 , B60H1/00 , F02M26/31 , B60H1/08 , B60H1/18 , B60H1/20 , B60H1/22
Abstract: A vehicular heat management system includes a heat medium circuit, a heat source portion, and a device. A heat medium cooling an engine circulates in the heat medium circuit. The heat source portion heats the heat medium. The device is configured to function and heat the heat medium when the heat medium flowing into the device is at or above a predetermined temperature. When the engine is being warmed up, heat generated by the heat source portion is supplied to the device in preference to the engine. According to this, since the heat generated by the heat source portion is supplied to the device in preference to the engine when the engine is being warmed up, the engine can be warmed up early.
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