公开(公告)号：US20220357086A1

公开(公告)日：2022-11-10

申请号：US17869718

申请日：2022-07-20

Applicant: DENSO CORPORATION

Inventor： Masafumi NAKASHIMA ,  Atsushi INABA ,  Mikiharu KUWAHARA ,  Yuuichi KAMI ,  Hiroshi MIEDA

IPC: F25B49/02 ,  F25B40/06 ,  F25B43/02

Abstract: A refrigeration cycle device includes: a compressor having a compression mechanism forming a compression chamber for compressing refrigerant, and a cooled portion cooled by the refrigerant before being compressed by the compression mechanism; a radiator that radiates the refrigerant compressed by the compressor; a decompressor that decompresses the refrigerant radiated by the radiator; an evaporator that evaporates the refrigerant decompressed by the decompressor; an acquisition unit that acquires the state of the refrigerant after cooling the cooled portion and before flowing into the compression chamber; and a control unit that controls the superheat degree of the refrigerant flowing into the compression chamber based on the state of the refrigerant acquired by the acquisition unit.

公开(公告)号：US20220275982A1

公开(公告)日：2022-09-01

申请号：US17749258

申请日：2022-05-20

Applicant: DENSO CORPORATION

Inventor： Hiroshi MIEDA ,  Atsushi INABA ,  Yuuichi KAMI ,  Mikiharu KUWAHARA ,  Masafumi NAKASHIMA

IPC: F25B30/02 ,  F25B41/42

Abstract: A refrigeration cycle device includes a compressor, an upstream branch portion, a heating portion, a decompression portion, a bypass passage, a bypass flow adjustment portion, and a mixing portion. The mixing portion mixes a bypass side refrigerant flowing out from the bypass flow adjustment portion with a decompression-portion side refrigerant flowing out from the decompression portion, and causes the mixed refrigerant to flow to a suction port side of the compressor. The mixing portion mixes the bypass side refrigerant and the decompression-portion side refrigerant such that an enthalpy difference obtained by subtracting an enthalpy of an ideal homogeneously mixed refrigerant from an enthalpy of a suction side refrigerant actually sucked into the compressor is equal to or less than a predetermined reference value.

公开(公告)号：US20220402336A1

公开(公告)日：2022-12-22

申请号：US17894581

申请日：2022-08-24

Applicant: DENSO CORPORATION

Inventor： Kazuhiro TADA ,  Yuuichi KAMI ,  Zhaoliang XU ,  Atsushi INABA

IPC: B60H1/32

Abstract: A vehicle air conditioner includes a compressor, a heating unit, an outside air heat exchanger, a wind speed regulation unit, and a controller. The controller includes a melting control unit, a dry control unit, and a dry completion determination unit. In a dry defrosting mode, the melting control unit performs melting-defrosting to melt frost adhering to the outside air heat exchanger. The dry control unit performs a dry defrosting in which at least one of the amount of heat in a predetermined range or a wind speed regulated in a predetermined range by the wind speed regulation unit is supplied to residual water adhering to the outside air heat exchanger, due to melting of frost in the melting-defrosting, to dry the residual water. The dry completion determination unit determines whether drying of the residual water in the outside air heat exchanger is completed, in the dry defrosting.

公开(公告)号：US20220034561A1

公开(公告)日：2022-02-03

申请号：US17501094

申请日：2021-10-14

Applicant: DENSO CORPORATION

Inventor： Yuuji SUWA ,  Etsuhisa YAMADA ,  Masao YASUNO ,  Daiki KATOU ,  Masaaki KAWAKUBO ,  Atsushi INABA ,  Yuuichi KAMI

IPC: F25B41/20 ,  F25B5/02

Abstract: A refrigeration cycle device includes a refrigerant circuit switching device. The refrigerant circuit switching device is configured to switch among at least a first circuit and a second circuit. The first circuit conducts refrigerant, which is outputted from a heat releasing device, to a liquid storage and conducts the refrigerant, which is outputted from the liquid storage, to a first depressurizing device and conducts the refrigerant, which is depressurized by the first depressurizing device, to an external heat exchanger. The second circuit conducts the refrigerant, which is outputted from the external heat exchanger, to the liquid storage and conducts the refrigerant, which is outputted from the liquid storage, to a second depressurizing device and conducts the refrigerant, which is depressurized by the second depressurizing device, to an evaporating device.

公开(公告)号：US20180141410A1

公开(公告)日：2018-05-24

申请号：US15576308

申请日：2016-05-23

Applicant: DENSO CORPORATION

Inventor： Yuuichi KAMI

IPC: B60H1/22 ,  B60H1/00 ,  B60H1/18

CPC classification number: B60H1/22 ,  B60H1/00335 ,  B60H1/00878 ,  B60H1/00921 ,  B60H1/18 ,  B60H2001/00961 ,  B60H2001/225

Abstract: A vehicle air conditioner includes an air-heating switching portion that switches between a first air-heating mode of heating ventilation air by a heating heat exchanger and a second air-heating mode of heating the ventilation air by a condenser. The vehicle air conditioner includes a heat-exchange adjustment portion that adjusts an amount of heat exchange between the high-pressure refrigerant and the ventilation air in the condenser, and a heat-exchange control unit that controls the heat-exchange adjustment portion. The heat-exchange control unit controls the heat-exchange adjustment portion to decrease the amount of heat exchange between the high-pressure refrigerant and the ventilation air in the condenser if a condition satisfies in which temperature of the refrigerant in the condenser is equal to or lower than temperature of the ventilation air heated by a heating heat exchanger before passing through the condenser, when the air-heating switching portion switches from the first air-heating mode to the second air-heating mode.