公开(公告)号：US12049122B2

公开(公告)日：2024-07-30

申请号：US17484538

申请日：2021-09-24

Applicant: DENSO CORPORATION

Inventor： Koji Miura ,  Hiroaki Kawano ,  Motohiro Yamaguchi ,  Kazuya Taniguchi ,  Yoshiki Kato ,  Masamichi Makihara ,  Takahiro Maeda ,  Kuniyoshi Tanioka ,  Toru Okamura ,  Naoya Makimoto

IPC: B60H1/00 ,  B60H1/32 ,  F25B1/00 ,  F25B5/02

CPC classification number: B60H1/00899 ,  B60H1/32284 ,  F25B1/00 ,  F25B5/02 ,  B60H1/00278 ,  B60H2001/00928 ,  B60H2001/00942

Abstract: A refrigeration cycle device includes a heat pump cycle, a high-temperature heat medium circuit, and a low-temperature heat medium circuit. The low-temperature heat medium circuit includes a plurality of heat absorption devices configured to have a heat absorption amount to be absorbed by the low-temperature heat medium flowing out of a low-temperature heat medium-refrigerant heat exchanger, and a heat absorption adjusting unit configured to change the heat absorption amount of the low-temperature heat medium in the respective heat absorption devices. In the refrigeration cycle device, a flow amount of the refrigerant flowing into the low-temperature heat medium-refrigerant heat exchanger is reduced when the heat absorption adjusting unit changes the heat absorption amount of the low-temperature heat medium in the respective heat absorption devices, and the flow amount of the refrigerant flowing into the low-temperature heat medium-refrigerant heat exchanger is increased when a recovery condition is satisfied.

公开(公告)号：US20220069387A1

公开(公告)日：2022-03-03

申请号：US17454157

申请日：2021-11-09

Applicant: DENSO CORPORATION

Inventor： Takahiro Maeda ,  Yoshiki Katoh ,  Masamichi Makihara ,  Kuniyoshi Tanioka ,  Kouji Miura

IPC: H01M10/663 ,  B60H1/03 ,  B60H1/00 ,  H01M10/613 ,  H01M10/625 ,  H01M10/6568

Abstract: A cooling water circuit includes: a heat-radiating heat exchanger in which a cooling water is heated by heat radiated from an external heat medium; a heat-absorbing heat exchanger in which a cooling water is cooled by heat absorbed by an external heat medium; and a first heat exchanger and a second heat exchanger in which heat is exchanged between the cooling water and outside air. When a high-temperature cooling water heated by the heat-radiating heat exchanger flows through the first heat exchanger and the second heat exchanger, the first heat exchanger and the second heat exchanger are arranged in series for the cooling water to flow. When a low-temperature cooling water cooled by the heat-absorbing heat exchanger flows through the first heat exchanger and the second heat exchanger, the first heat exchanger and the second heat exchanger are arranged in parallel for the cooling water to flow.

公开(公告)号：US11833887B2

公开(公告)日：2023-12-05

申请号：US17354591

申请日：2021-06-22

Applicant: DENSO CORPORATION

Inventor： Hiroaki Kawano ,  Yoshiki Kato ,  Masamichi Makihara ,  Takahiro Maeda ,  Kuniyoshi Tanioka ,  Toru Okamura ,  Naoya Makimoto

IPC: F25B13/00 ,  B60H1/03 ,  B60H1/32

CPC classification number: B60H1/034 ,  B60H1/323 ,  B60H1/3227

Abstract: A vehicular air conditioner includes a refrigeration cycle system, a high-temperature heat medium circuit, and a low-temperature heat medium circuit. The high-temperature heat medium circuit includes an air-heat medium heat exchanger, a heater core, a branching portion, a common passage, a flow rate adjuster, and an auxiliary heat source. The air-heat medium heat exchanger exchanges heat between the heat medium and an outside air. The heater core is arranged parallel to the air-heat medium heat exchanger and causes the heat medium to transfer heat to a ventilation air. The branching portion divides a flow of the heat medium into a flow toward the air-heat medium heat exchanger and a flow toward the heater core. The auxiliary heat source is arranged in the common passage at a position upstream of the branching portion.

公开(公告)号：US11913684B2

公开(公告)日：2024-02-27

申请号：US17501402

申请日：2021-10-14

Applicant: DENSO CORPORATION

Inventor： Masamichi Makihara ,  Yoshiki Katoh ,  Takahiro Maeda ,  Kuniyoshi Tanioka ,  Akira Higuchi ,  Takehito Mizunuma ,  Takuya Hamada

IPC: F16K11/06 ,  F16K11/02 ,  F16K31/53 ,  F25B25/00 ,  F25B41/20

CPC classification number: F25B25/005 ,  F16K11/02 ,  F16K11/06 ,  F16K31/535 ,  F25B41/20

Abstract: A fluid circulation circuit includes a flow passage switching valve. The flow passage switching valve includes a body and a switcher. The body includes a first inlet, a second inlet, and outlets including a first outlet. The switcher is capable of switching a passage configuration to a state in which a fluid that has flowed in from the first inlet flows out of either one of the outlets and a state in which the fluid that has flowed in from the second inlet flows out of either one of the outlets.

公开(公告)号：US11318814B2

公开(公告)日：2022-05-03

申请号：US17010765

申请日：2020-09-02

Applicant: DENSO CORPORATION

Inventor： Takahiro Maeda

IPC: F25D17/00 ,  B60H1/00

Abstract: A cooling apparatus includes: a water circuit; a ventilation heat exchanger that heats cooling water by heat exchange with air discharged to outside; a motor generator cooling unit; a motor bypass circuit that bypasses the motor generator cooling unit; and a flow rate control unit. When a temperature of the cooling water flowing between the ventilation heat exchanger and a motor flow rate controller is lower than or equal to a temperature of oil circulating inside the motor generator, the flow rate control unit increases a flow rate of the cooling water that flows from the ventilation heat exchanger into the motor bypass circuit.