公开(公告)号：US20190217684A1

公开(公告)日：2019-07-18

申请号：US16307272

申请日：2017-04-27

Applicant: DENSO CORPORATION

Inventor： Hiroshi OSHITANI ,  Hiroshi MIEDA

IPC: B60H1/32

CPC classification number: B60H1/323 ,  B60H1/22 ,  B60H1/32 ,  B60H2001/3298 ,  F25B1/00 ,  F25B5/04 ,  F25B39/00

Abstract: An ejector refrigeration cycle device includes: a first decompressor that decompresses a refrigerant heat-exchanged in a radiator; a first exterior heat exchanger that exchanges heat between the refrigerant decompressed by the first decompressor and outside air; an ejector that decompresses the refrigerant flowing out of the radiator in a nozzle portion and draws another refrigerant heat-exchanged in the first exterior heat exchanger; a second branch portion in which the refrigerant heat-exchanged in the radiator branches to a side of the first decompressor and a side of the nozzle portion of the ejector; a second exterior heat exchanger that exchanges heat between the refrigerant pressurized in the ejector and the outside air; a first bypass portion that causes the refrigerant heat-exchanged in the radiator to flow to the first exterior heat exchanger while bypassing the first decompressor and the nozzle portion; and an opening/closing portion that opens or closes the first bypass portion.

公开(公告)号：US20210063067A1

公开(公告)日：2021-03-04

申请号：US17098487

申请日：2020-11-16

Applicant: DENSO CORPORATION

Inventor： Ryohei SUGIMURA ,  Masaaki KAWAKUBO ,  Daiki KATO ,  Hiroshi MIEDA ,  Tetsuya ITO

IPC: F25B43/00 ,  F25B39/00 ,  F28D1/053 ,  F25B5/04 ,  F25B40/00 ,  B60H1/00 ,  F25B6/04 ,  B60H1/32

Abstract: A heat exchanger includes a heat exchanging portion, a reservoir that performs gas-liquid separation on a gas-liquid two-phase refrigerant that flows out from the heat exchanging portion into a gas-phase refrigerant and a liquid-phase refrigerant and stores the liquid-phase refrigerant, and an inflow passage that allows the gas-liquid two-phase refrigerant flowing out from the heat exchanging portion to flow into the reservoir. The inflow passage is connected so as to be in communication with an inlet port of the reservoir which is disposed above a liquid surface of the liquid-phase refrigerant stored in the reservoir.

公开(公告)号：US20200158382A1

公开(公告)日：2020-05-21

申请号：US16774250

申请日：2020-01-28

Applicant: DENSO CORPORATION

Inventor： Daiki KATO ,  Masaaki KAWAKUBO ,  Tetsuya ITO ,  Yasuhiro KAWASE ,  Ryohei SUGIMURA ,  Hiroshi MIEDA

IPC: F25B9/14 ,  F25B30/02 ,  F25D31/00

Abstract: In a heat pump cycle device, a flow passage switching portion includes a flow passage switching valve body configured to open and close a cooling side flow passage. A refrigerant circulation circuit includes a low-pressure flow passage through which a low-pressure refrigerant decompressed by a first decompressor flows toward a compressor in a heating mode, and a pre-evaporator flow passage provided between the flow passage switching valve body and a refrigerant inlet of an evaporator. The flow passage switching portion causes a pre-evaporator flow passage to communicate with the low-pressure flow passage while bypassing the evaporator when a refrigerant pressure in the low-pressure flow passage is lower than a refrigerant pressure in the pre-evaporator flow passage, in the heating mode.

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：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：US20230029816A1

公开(公告)日：2023-02-02

申请号：US17965095

申请日：2022-10-13

Applicant: DENSO CORPORATION

Inventor： Ryohei SUGIMURA ,  Hiroshi MIEDA

IPC: F28F9/02 ,  F25B39/04 ,  F28D21/00

Abstract: The heat exchanger includes a first heat-exchange portion and a second heat-exchange portion. The first heat-exchange portion includes a first header tank having an inflow portion through which the heat medium flows into the first heat-exchange portion. The second heat-exchange portion includes a second header tank having an outflow portion through which the heat medium flows out of the second heat-exchange portion. The first header tank and the second header tank are connected to each other via a connecting portion. The connecting portion has a slit passing through the connecting portion.

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：US20190226731A1

公开(公告)日：2019-07-25

申请号：US16307108

申请日：2017-03-23

Applicant: DENSO CORPORATION

Inventor： Yasuhiro MIZUNO ,  Isao TAMADA ,  Hiroshi MIEDA ,  Ryohei SUGIMURA

IPC: F25B39/04 ,  F28D9/02 ,  F28F3/04 ,  F28F3/08

Abstract: A stack type heat exchanger includes a plurality of first plates and a plurality of second plates. At least one of the respective first plates and the respective second plates has a protrusion protruding from a main body of the first plate or the second plate toward a first flow path, the protrusion being located at a peripheral portion of a tank space in the first flow path. The first plate and the second plate are joined to each other through the protrusion. The protrusion has a top portion and a side wall portion. A part of the side wall portion adjacent to the tank space has a thick structure portion, an entire thickness of the thick structure portion being thick in a direction perpendicular to the stacking direction.

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：US20200232726A1

公开(公告)日：2020-07-23

申请号：US16841260

申请日：2020-04-06

Applicant: DENSO CORPORATION

Inventor： Ryohei SUGIMURA ,  Masaaki KAWAKUBO ,  Daiki KATO ,  Tetsuya ITO ,  Hiroshi MIEDA

IPC: F28F13/06 ,  F25B29/00 ,  F25B41/00 ,  F25B41/04

Abstract: A heat exchanger has an inflow port through which refrigerant flows, a cooling outflow port through which the refrigerant flows out during a cooling operation, and a heating outflow port through which the refrigerant flows out during a heating operation. A distance between the inflow port and the heating outflow port is shorter than a distance between the inflow port and the cooling outflow port.