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公开(公告)号：US11498391B2
公开(公告)日：2022-11-15
申请号：US16775058
申请日：2020-01-28
Applicant: DENSO CORPORATION
Inventor： Kosuke Shiratori , Yoshiki Kato
Abstract: An air conditioner is configured to be switchable between a heating mode and a cooling mode. In the cooling mode, a high-temperature heat medium circulates between a high-pressure side refrigerant-heat medium heat exchanger and a high-temperature heat medium-outside air heat exchanger in a state where a refrigerant circulates in an air-cooling heat exchanger. In the heating mode, the high-temperature heat medium circulates between the high-pressure side refrigerant-heat medium heat exchanger and an air-heating heat exchanger, while a low-temperature heat medium circulates between a low-pressure side refrigerant-heat medium heat exchanger and a low-temperature heat medium-outside air heat exchanger, in a state where the refrigerant circulates in the low-pressure side refrigerant-heat medium heat exchanger.
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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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4.发明授权公开(公告)号：US10906141B2
公开(公告)日：2021-02-02
申请号：US16293877
申请日：2019-03-06
Applicant: DENSO CORPORATION
Inventor： Yasumitsu Omi , Takashi Yamanaka , Yoshiki Kato , Takeshi Yoshinori , Masayuki Takeuchi , Koji Miura
Abstract: A method for manufacturing a device temperature controller includes filling an inside of a circuit with working fluid by connecting a filling port of the circuit to a container that stores gas phase working fluid. The circuit constitutes a thermosiphon heat pipe and allows the working fluid to circulate in the circuit. In the filling, the working fluid inside the circuit is cooled by a cooling source. An inside temperature of the circuit is decreased to be lower than an inside temperature of the container, and thereby an inside pressure of the circuit is decreased to be lower than an inside pressure of the container.
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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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Patent Agency Ranking
公开(公告)号：US20250018769A1
公开(公告)日：2025-01-16
申请号：US18903548
申请日：2024-10-01
Applicant: DENSO CORPORATION
Inventor： Kohei Noguchi , Yasuhiro Yokoo , Yoshiki Kato , Yukihisa Ijuin , Hiroaki Kawano , Yoshio Hayashi , Junki Hirayama , Naito Muto
Abstract: A refrigeration cycle includes a compressor, a refrigerant radiator, first and second expansion valves configured to decompress refrigerant flowing out of the refrigerant radiator, a first evaporator configured to evaporate the refrigerant flowing out of the first expansion valve, and a second evaporator configured to evaporate the refrigerant flowing out of the second expansion valve. A heat medium circuit includes a heat exchange portion and circulates a heat medium while flowing through the heat exchange portion and the second evaporator. The first evaporator exchanges heat between the refrigerant and ventilation air blown to a space to be air conditioned, and the second evaporator exchanges heat between the heat medium and the refrigerant to evaporate the refrigerant and cool the heat medium. The heat exchange portion is made to cool the temperature regulation target.
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公开(公告)号：US20240424864A1
公开(公告)日：2024-12-26
申请号：US18829542
申请日：2024-09-10
Applicant: DENSO CORPORATION
Inventor： Yukihisa IJUIN , Toru Okamura , Naoya Makimoto , Yoshio Hayashi , Yoshiki Kato , Hiroaki Kawano , Yasuhiro Yokoo , Junki Hirayama , Naito Muto , Kohei Noguchi
Abstract: A first refrigeration cycle includes a first compressor, a first radiator, an air-conditioning expansion valve, an air-conditioning evaporator, a first expansion valve, and a first evaporator. In the first refrigeration cycle, a first refrigerant evaporates in at least one of the air-conditioning evaporator or the first evaporator. A second refrigeration cycle includes a second compressor, a second radiator, a second expansion valve, and a second evaporator. A heat transfer portion switches a heat radiation destination from the first radiator to a second refrigerant in the second evaporator or outside air. In the air-conditioning evaporator, the first refrigerant absorbs heat from ventilation air blown into a space to be air conditioned as the first refrigerant evaporates. In the first evaporator, the first refrigerant absorbs heat from the outside air as the first refrigerant evaporates. In the second radiator, the second radiator radiates heat from the second refrigerant to the ventilation air.
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公开(公告)号：US10950909B2
公开(公告)日：2021-03-16
申请号：US16285275
申请日：2019-02-26
Applicant: DENSO CORPORATION
Inventor： Koji Miura , Takashi Yamanaka , Yasumitsu Omi , Yoshiki Kato , Masayuki Takeuchi , Takeshi Yoshinori
IPC: H01M10/6569 , H01M10/625 , H01M10/633 , H01M10/613 , H01M10/6556 , H05K7/20 , H01M10/6552 , F28D15/06 , F28D15/02 , B60L58/26 , B60K6/28
Abstract: A device temperature regulator is provided with a gas passage part that guides a gaseous working fluid evaporated in a device heat exchanger to a condenser, and a liquid passage part that guides a liquid working fluid condensed in the condenser to the device heat exchanger. The device temperature regulator is provided with a supply amount regulator that increases or decreases a supply amount of the liquid working fluid supplied to the device heat exchanger. The supply amount regulator decreases the supply amount of the liquid working fluid to the device heat exchanger such that a liquid surface is formed in a state where the gaseous working fluid is positioned at a lower side lower than a heat exchanging portion exchanging heat with a temperature regulation target device in the device heat exchanger, when a condition for keeping the temperature regulation target device at a temperature is satisfied.
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公开(公告)号：US10919364B2
公开(公告)日：2021-02-16
申请号：US16250215
申请日：2019-01-17
Applicant: DENSO CORPORATION
Inventor： Ariel Marasigan , Koji Miura , Yoshiki Kato
Abstract: The present disclosure provides a vehicle air-conditioning device in which cooperative work with a power source is appropriate, which is easy to follow when the power source is restarted, and which reduces a driving force of a compressor at the time of restarting the power source. The vehicle air-conditioning device is provided with a refrigeration cycle. The refrigeration cycle has a compressor that is driven by a power source which may stop temporarily. The refrigeration cycle provides a low temperature and/or a high temperature. A high-temperature system and/or a low-temperature system is provided as a thermal buffer. The refrigeration cycle is provided with electric expansion valves which can be fully closed. The vehicle air-conditioning device is also provided with a control device, which fully closes the electric expansion valves when the compressor is temporarily stopped and which controls the electric expansion valves to the previous opening position when the compressor is restarted.
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公开(公告)号：US11421564B2
公开(公告)日：2022-08-23
申请号：US16854955
申请日：2020-04-22
Applicant: DENSO CORPORATION
Inventor： Yoshiki Kato
Abstract: When an EDU determines that a motor is in a control unstable state where the motor cannot be controlled to a target rotation speed due to a drive voltage output duty value being smaller than a threshold value, the EDU performs a control point shifting operation to shift a control point between a first control point, which is in the control unstable state, and a second control point, which is a control stable state outside the control unstable state. Thus, even when the motor is in a stepping rotation state, it is possible to control the target rotation speed regardless of influence of a cogging torque, and appropriately control the cam phase of the intake camshaft to a target phase when the engine is stopped.
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