公开(公告)号：US20220136747A1

公开(公告)日：2022-05-05

申请号：US17576030

申请日：2022-01-14

Applicant: DENSO CORPORATION

Inventor： Kouji INAGAKI ,  Daiki KATOU ,  Hiroaki KAWANO ,  Yoshiki KATOH ,  Naoya MAKIMOTO

IPC: F25B41/31 ,  F25B5/02

Abstract: A refrigeration cycle device includes a compressor configured to compress and discharge a refrigerant containing oil, a refrigerant radiator configured to heat the ventilation air using the refrigerant discharged from the compressor as a heat source during a room interior heating, a refrigerant decompression unit configured to decompress the refrigerant having passed through the refrigerant radiator, an evaporator configured to evaporate the refrigerant and to function as a heat absorber during the room interior heating; and a controller configured to control the refrigerant decompression unit and to perform a fluctuation operation at least during the room interior heating. In the fluctuation operation, a throttle opening degree of the refrigerant decompression unit is changed such that a refrigerant state on a refrigerant outlet side of the evaporator is alternately changed to a superheated state having a superheat degree and a wet state containing the wet vapor.

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.