公开(公告)号：US20240401848A1

公开(公告)日：2024-12-05

申请号：US18801214

申请日：2024-08-12

Applicant: DENSO CORPORATION

Inventor： Haruyuki NISHIJIMA ,  Yuichi KAMI ,  Hiroshi MIEDA

IPC: F25B30/02

Abstract: A heat pump cycle device includes: a compressor; a branch portion; a heating unit configured to heat a heating object using one refrigerant branched at the branch portion as a heat source; a decompression unit configured to decompress the refrigerant flowing out of the heating unit; a bypass passage through which an another refrigerant branched at the branch portion flows; a regulating unit; and a joining portion. When a length of a suction-side flow path from an outlet port of the joining portion to a suction port of the compressor is defined as a suction-side flow path length L1, the suction-side flow path length L1 is equal to or longer than a relaxation distance Lv. The relaxation distance Lv is a flow length that is necessary for the refrigerant mixed in the joining portion to be made in a homogeneous state.

公开(公告)号：US20240361050A1

公开(公告)日：2024-10-31

申请号：US18732258

申请日：2024-06-03

Applicant: DENSO CORPORATION

Inventor： Kengo SUGIMURA ,  Yuichi KAMI ,  Kota TAKEICHI

IPC: F25B30/02 ,  F25B49/02

CPC classification number: F25B30/02 ,  F25B49/02 ,  F25B2400/04

Abstract: A heat pump cycle device includes a compressor, a branch portion, a heating unit, a heating-unit side decompression unit, a bypass passage, a bypass-side flow-rate regulating unit, a mixing portion, and a target temperature determination unit. When a regulating performance determination unit determines that a flow rate regulating performance of one of the heating-unit side decompression unit or the bypass-side flow-rate regulating unit is equal to or less than the reference regulating performance, a throttle opening of the other of the heating-unit side decompression unit or the bypass-side flow-rate regulating unit is set to be equal to or less than an upper limit opening.

公开(公告)号：US20240219086A1

公开(公告)日：2024-07-04

申请号：US18602846

申请日：2024-03-12

Applicant: DENSO CORPORATION

Inventor： Kota TAKEICHI ,  Atsushi INABA ,  Yuichi KAMI ,  Kengo SUGIMURA ,  Daiki KATO

IPC: F25B41/20 ,  F25B30/02 ,  F25B41/42

CPC classification number: F25B41/20 ,  F25B30/02 ,  F25B41/42

Abstract: A heat pump cycle device includes a compressor, a branching unit, a heating unit, a heating-unit-side depressurizing unit, a bypass passage, a bypass flow-rate adjusting unit, a mixing unit, and a target pressure difference determining unit. The target pressure difference determining unit determines a target pressure difference as a target value of a pressure difference determined by subtracting a suctioned refrigerant pressure from a discharge refrigerant pressure. An operation of at least one of the compressor, the heating-unit-side depressurizing unit, or the bypass flow-rate adjusting unit is controlled so that the pressure difference comes close to the target pressure difference.

公开(公告)号：US20240190216A1

公开(公告)日：2024-06-13

申请号：US18441791

申请日：2024-02-14

Applicant: DENSO CORPORATION

Inventor： Hiroshi MIEDA ,  Atsushi INABA ,  Yuichi KAMI ,  Norihiko ENOMOTO ,  Masahiro ITO

IPC: B60H1/32

CPC classification number: B60H1/3223

Abstract: A compressor module for a heat pump cycle includes a compressor, a channel forming member configured to define therein a plurality of internal refrigerant channels through which refrigerant flows, and a cover member configured to define a housing space of a housing, which houses the compressor, together with the channel forming member. The housing is provided therein with a compressor-side inlet and a compressor-side outlet communicating to the internal refrigerant channels, and is provided with an outside connection port outside of the housing space and communicating to the internal refrigerant channels. The compressor has a refrigerant discharge port coupled to the compressor-side inlet, and a refrigerant suction port coupled to the compressor-side outlet. The outside connection port is connected to inflow and outflow sides of external component devices disposed outside the housing space, in component devices of the heat pump cycle.

公开(公告)号：US20210102716A1

公开(公告)日：2021-04-08

申请号：US17110058

申请日：2020-12-02

Applicant: DENSO CORPORATION

Inventor： Satoshi ITO ,  Kengo SUGIMURA ,  Yuichi KAMI ,  Hiroyuki KOBAYASHI

IPC: F24F3/14 ,  F24F1/022 ,  F24F3/153

Abstract: A refrigeration cycle device includes a heating unit, an air-heating expansion valve, an outdoor heat exchanger, an air-cooling expansion valve, an indoor evaporator, and a cooler-unit expansion valve, a cooler unit, and a refrigerant circuit switching unit. In a heating series cooler-unit mode, refrigerant is circulated in order of the heating unit, the air-heating expansion valve, the outdoor heat exchanger, the cooler-unit expansion valve, and the cooler unit. In a heating parallel cooler-unit mode, refrigerant is circulated in order of the heating unit, the air-heating expansion valve, and the outdoor heat exchanger, and refrigerant is circulated in order of the heating unit, the cooler-unit expansion valve, and the cooler unit.