Mitsubishi Heavy Industries Limited

Mitsubishi Heavy Industries Thermal Systems, Ltd.

Hideki Suetake

Toshihisa Kondo

Masahiro Kato

Akira Katayama

Katsuhiro Fujita

Nobuya Nakagawa

Masatoshi Morishita

Toshiyuki Ishida

Tomohisa Moro

Katsuhiro Saito

Yoichiro Iritani

Masatosi Morisita

Masatoshi Mitsui

Shirou Matsubara

An object of the present invention is to achieve favorable sealability by a simple and low-cost structure using an O-ring. A sealing structure according to the present invention is provided with: a first sealing surface formed in an annular shape on a first container structural member configuring a housing (container); a second sealing surface overlaid on the first sealing surface, formed in annular shape on a second container structural member configuring the housing; a plurality of concentric O-ring grooves formed on at least one of the first sealing surface and second sealing surface; and a plurality of O-rings fitted into the plurality of O-ring grooves. The filling ratio of the O-ring in the O-ring groove positioned on an outer side of the housing is larger than the filling ratio of the O-ring in the O-ring groove positioned on an inner side of the housing.

Sealing structure for airtight container and vehicle refrigerant compressor provided with said structure

A vehicle air-conditioning system () includes an HVAC unit () in which a first refrigerant evaporator () and a second refrigerant condenser () are disposed in an air channel () communicating with a vehicle interior space; and a heat pump cycle () in which a refrigerant compressor (), a refrigerant switching device (), a first refrigerant condenser () that exchanges heat with the outside air, a first expansion valve (), and a first refrigerant evaporator () are connected in sequence and in which the second refrigerant condenser () is connected in parallel with the first refrigerant condenser () via the refrigerant switching device (). An exhaust-heat recovery circuit () equipped with a second refrigerant evaporator () disposed in a ventilation channel () from the vehicle interior and a second expansion valve () is connected in parallel with the first expansion valve () and the first refrigerant evaporator () of the heat pump cycle ().

Vehicle air-conditioning system

A vehicle air-conditioning system includes an HVAC unit that blows air whose temperature is adjusted by a refrigerant evaporator and a second refrigerant condenser. The system includes a heat pump cycle in which a refrigerant compressor, a refrigerant circuit changeover section, a first refrigerant condenser, a first expansion valve, and the refrigerant evaporator are sequentially connected. The system includes a second expansion valve and a refrigerant heat exchanger connected in parallel with the first expansion valve and the refrigerant evaporator. The second refrigerant condenser is connected in parallel with the first refrigerant condenser. The system includes a coolant cycle in which a coolant circulating pump, a ventilation-exhaust-heat recovery unit, a motor/battery, an electric heater, and the refrigerant heat exchanger are sequentially connected, and the ventilation-exhaust-heat recovery unit, motor/battery, and electric heater can be selectively used as a heat source.

Vehicle air-conditioning system and operation control method therefor

A vehicle air conditioner that can perform air conditioning operation in an inside air circulating mode while suppressing the mist on a windshield and prevent deterioration in an inside air quality. When exhaust gas concentration on the outside of a vehicle is high, an outside air lead-in mode is switched to an inside air circulating mode and window mist limit humidity at that point is calculated. When inside humidity is close to the window mist limit, a compressor is actuated, the air is blown out from a DEF blowout port into a cabin, or an air volume in a blower is increased to prevent the mist on the windshield and delay switching to the outside air lead-in mode as much as possible. Consequently, air conditioning operation in the inside air circulating mode is performed while the mist on the windshield is suppressed to prevent deterioration in the inside air quality.

Vehicle air conditioner

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Tokyo, Japan

Hideki Suetake