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    Vehicle air conditioning device
    1.
    发明授权
    Vehicle air conditioning device 有权

    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

    IPC: B60H1/32 ,  B60H1/00

    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.

    Heat exchange system and refrigerant cycle including heat exchange system
    2.
    发明授权
    Heat exchange system and refrigerant cycle including heat exchange system 有权

    公开(公告)号：US11221164B2

    公开(公告)日：2022-01-11

    申请号：US16589217

    申请日：2019-10-01

    Applicant: DENSO AUTOMOTIVE Deutschland GmbH ,  DENSO CORPORATION

    Inventor： Ariel Marasigan

    IPC: F25B41/31 ,  B60H1/00 ,  F25B41/20

    Abstract: A heat exchange system includes a dual expansion valve for a refrigerant cycle of a vehicle that includes a first inlet and a first outlet, a first flow restriction mechanism including a movable first valve element, by which a first refrigerant stream flowing through a first passage from the first inlet to the first out let can be controlled, a second inlet and a second outlet, a second flow restriction mechanism including a movable second valve element, by which a second refrigerant stream flowing through a second passage from the second inlet to the second outlet can be controlled, a control member for jointly moving the first valve member and the second valve member, a sensing element for sensing a temperature, and a valve driving member that is configured to drive the control member according to the sensed temperature.

    Refrigeration cycle device
    5.
    发明授权
    Refrigeration cycle device 有权

    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

    IPC: B60H1/00 ,  B60H1/32

    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.

    Refrigeration cycle device
    6.
    发明授权
    Refrigeration cycle device 有权

    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

    IPC: F25B13/00 ,  F25B39/04 ,  F25B6/04 ,  F25B41/06 ,  F25B1/00 ,  F25B29/00 ,  F25B41/04

    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.

    Refrigeration cycle device
    7.
    发明授权
    Refrigeration cycle device 有权

    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

    IPC: B60H1/00 ,  B60H1/22 ,  F25B5/04 ,  B60H1/32 ,  F25B1/00 ,  F01P3/20 ,  F25B29/00 ,  G06F9/48

    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.

    Refrigeration cycle device
    9.
    发明授权
    Refrigeration cycle device 有权

    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

    IPC: B60H1/32 ,  F25B5/04 ,  F25B49/02 ,  F25B25/00 ,  F25B6/04 ,  B60H1/00 ,  F25B9/00 ,  F25B40/02

    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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