Denso Corporation

Toru Okamura

Kuniyoshi Tanioka

Masamichi Makihara

Yoshiki Kato

Naoya Makimoto

Takahiro Maeda

Hiroaki Kawano

Koji Miura

Motohiro Yamaguchi

Kenichi Nara

Kazuya Taniguchi

Atsushi Yamada

Kenta Kayano

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 temperature adjusting device includes a heat radiation portion and a refrigeration cycle device. The heat radiation portion radiates heat of a target object to outside air. The refrigeration cycle device has a condenser and an evaporator. The condenser condenses a high-pressure refrigerant discharged from a compressor that compresses and discharges a refrigerant. The evaporator evaporates a low-pressure refrigerant pressure-reduced in a pressure reducing portion that reduces a pressure of the high-pressure refrigerant. The condenser radiates heat of the high-pressure refrigerant to at least part of the outside air that has passed through the heat radiation portion. The heat radiation portion radiates the heat of the target object to the outside air before heat of the outside air is absorbed in the condenser.

Temperature adjusting device

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.

Refrigeration cycle device

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.

Engine warm-up apparatus for vehicle

The exhaust gas recirculation system comprises an exhaust recirculation pipe configured to recirculate an exhaust gas from an engine into an intake pipe of the engine, an exhaust gas heat exchanger connected to the exhaust recirculation pipe and configured to perform an heat exchange between the exhaust gas and an engine cooling water used for cooling the engine, a cooling water pipe configured to circulate the engine cooling water to the exhaust gas heat exchanger, and a heat insulating member forming a heat insulating layer on a heat transfer path from the exhaust gas heat exchanger to the outside.

Growing community of inventors

Kariya, Japan

Toru Okamura