公开(公告)号：US20220009309A1

公开(公告)日：2022-01-13

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

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：US20210291626A1

公开(公告)日：2021-09-23

申请号：US17343279

申请日：2021-06-09

Applicant: DENSO CORPORATION

Inventor： Naoya MAKIMOTO ,  Yoshiki KATO

IPC: B60H1/22 ,  B60H1/32

Abstract: A refrigeration cycle device includes a high-temperature heating medium regulator and a controller. The high-temperature heating medium regulator regulates a high-temperature heating medium flow ratio between the flow rate of high-temperature heating medium flowing in an air heater and the flow rate of high-temperature heating medium flowing in a radiator. The controller controls the high-temperature heating medium regulator to regulate the high-temperature heating medium flow ratio such that excess heat is radiated to air outside the cabin by the radiator, of the heat radiated from the refrigerant to the high-temperature heating medium by a high-pressure-side heat exchanger, with respect to heat required for heating air blown into a cabin by the air heater to have a target outlet temperature.

公开(公告)号：US20190111756A1

公开(公告)日：2019-04-18

申请号：US16218893

申请日：2018-12-13

Applicant: DENSO CORPORATION

Inventor： Naoya MAKIMOTO ,  Mikiharu KUWAHARA

IPC: B60H1/00 ,  B60H1/32

Abstract: A refrigeration cycle device includes a first refrigerant passage from a radiator to an outside heat exchanger, and a second refrigerant passage from the outside heat exchanger to a compressor via a first evaporator. A first expansion valve is disposed in the first refrigerant passage upstream of the outside heat exchanger. A second expansion valve is disposed in the second refrigerant upstream of the first evaporator. The refrigeration cycle device includes a third refrigerant passage that guides the refrigerant flowing between the radiator and the first expansion valve to bypass the first expansion valve and the outside heat exchanger to flow to the second refrigerant passage on the refrigerant flow downstream side of the first evaporator. A third expansion valve is disposed in the third refrigerant passage. A second evaporator is disposed in the third refrigerant passage on the refrigerant flow downstream side of the third expansion valve.