Denso Corporation

Nippondenso Co., Ltd.

Nippon Soken, Inc.

Akihisa Kokubo

Keiichiro Banzai

Katsuya Ishii

Mikio Matsuda

Takahisa Suzuki

Tadayoshi Terao

Hiroki Ishii

Masaru Tsunokawa

In a cooling device for cooling a heat-generating member, a refrigerant tank includes a heat-receiving wall onto which the heat-generating member is attached in an attachment area, and a radiation wall opposite to the heat-receiving wall. A main wick is provided on an approximate entire inner surface of the heat-receiving wall, and an auxiliary wick is arranged opposite to at least a middle portion of an inner surface of the radiation wall within the attachment area. Condensation fins are provided to protrude from an inner surface of the radiation wall, and are separately arranged on both sides of the auxiliary wick. In the cooling device, the auxiliary wick is connected to the main wick and condensation fins.

Cooling device boiling and cooling refrigerant, with main wick and auxiliary wick

A cooling apparatus communicates through a communicating pipe with an inside space of an airtight casing in which a plurality of battery cells are hermetically held. The cooling apparatus and the inside space of the airtight casing are filled with high boiling point coolant. The coolant absorbs heat developed by the plurality of battery cells in the airtight casing so that it evaporates. The evaporated (gaseous) coolant rises toward the cooling apparatus and is condensed in the cooling apparatus. Then the condensed (liquid) coolant returns to around the battery cells by its self-weight. Accordingly, the battery cells are uniformly and efficiently cooled not to have variation in temperature therein.

Battery cooling system

In an air conditioning apparatus for a vehicle, a water/refrigerant heat exchanger is disposed at a refrigerant discharge side of a compressor of a refrigerant cycle, and a cooling unit for cooling a heat-generating unit with refrigerant having an intermediate pressure of the refrigerant cycle is disposed at a downstream refrigerant side of the water/refrigerant heat exchanger. The air conditioning apparatus includes an evaporator and a hot-water type heater core disposed in an air conditioning duct. In a cooling water circuit, an engine, a radiator and an electrical pump are disposed in addition to the water/refrigerant heat exchanger and the hot-water type heater core. Thus, refrigerant absorbs heat generated in the heat-generating unit, and is heat-exchanged with cooling water in the water/refrigerant heat exchanger after passing through the compressor. As a result, the heat-generating unit can be cooled sufficiently even when outside air temperature is high in the summer, and heating capacity can be effectively improved using heat generated from the heat-generating unit in the winter.

Air conditioning apparatus for vehicle

A method of control of a car air-conditioner which prevents condensation and fogging on window glass occurring at the initial start of a slow starting heat pump system, without dehumidification by a large amount of ventilation as in the past, by driving an absorbent fan simultaneously with the start of a heating operation by the system so as to remove the moisture from the air in the passenger compartment by a small amount of an absorbent, starting a low level of ventilation when the heat pump system has finished warming up, ending the dehumidification by the absorbent within a relatively short time, and starting the regeneration of the absorbent by supplying power to a heater.

Growing community of inventors

Kariya, Japan

Akihisa Kokubo