Denso Corporation

Kuniyoshi Tanioka

Masamichi Makihara

Takahiro Maeda

Yoshiki Katoh

Toru Okamura

Yoshiki Kato

Naoya Makimoto

Hiroaki Kawano

Koji Miura

Motohiro Yamaguchi

Kazuya Taniguchi

Atsushi Yamada

Takehito Mizunuma

Kenta Kayano

Akira Higuchi

Naoki Yokoyama

Kenichi Nara

Takuya Hamada

Kouji Miura

Tooru Okamura

In a refrigeration cycle device, a heat supply unit is disposed in parallel with a heat utilization unit in a flow of a heat medium. A branching part branches the heat medium flowing out of a heat radiator into a flow flowing toward the heat utilization unit and a flow flowing toward the heat supply unit. A merging part is configured to cause the heat medium having passed through the heat utilization unit and the heat medium having passed through the heat supply unit to merge together and to flow toward the heat radiator. A switching unit switches an operation state between a first state in which the heat medium circulates between the heat radiator and the heat utilization unit, and a second state in which the heat medium circulates between the heat radiator, the heat utilization unit and the heat supply unit.

Refrigeration cycle device

An air conditioner includes a heat pump cycle, a heating unit, a low-temperature side heat medium circuit, and a heat dissipation amount adjustment control unit. The heat pump cycle has a compressor, a condenser, a decompression unit, and an evaporator. The heating unit has a heating heat exchanger, an outside air radiator, and a heat dissipation amount adjustment unit. The low-temperature side heat medium circuit has a heat generation device. The heat dissipation amount adjustment control unit controls the heat dissipation amount adjustment unit to adjust a heat dissipation amount in the outside air radiator such that a blown air temperature of the blown air heated by the heating heat exchanger approaches a predetermined target temperature.

Air conditioner

A battery heating device includes: a radiator and a heater core arranged in parallel with each other; a battery temperature adjusting unit for heating a battery with a heat medium; a first branch branching the heat medium between the radiator and the heater core; a first confluence where the heat medium merges; a second branch where the heat medium from a heat emitter is branched to the battery temperature adjustment unit; a second confluence where the heat medium flowing through the battery temperature adjustment unit merges; and a radiator flow rate reducing part arranged in a passage for the heat medium from the first branch or the second branch closer to the radiator to the first confluence or the second confluence closer to the radiator via the radiator.

Battery heating device for vehicle

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.

Cooling water circuit

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.

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.

Flow passage switching valve and fluid circulation circuit

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.

Vehicular air conditioner

A warm-up device is provided in a cooling-water circuit, through which cooling water is circulated so as to pass through an engine. The warm-up device has a heat accumulating passage, in which a heat accumulating device is provided, and an accumulating-device bypassing passage bypassing the heat accumulating device. A waste-heat collecting device is provided in the cooling-water circuit so that heat is collected from exhaust gas from the engine and such collected heat is accumulated in the heat accumulating device. The cooling water is circulated through the heat accumulating device during a start-up operation of the engine in order to heat the cooling water flowing into the engine so as to quickly warm up the engine.

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Kariya, Japan

Kuniyoshi Tanioka