Mitsubishi Heavy Industries Limited

Mitsubishi Heavy Industries Automotive Thermal Systems Co., Ltd.

Mitsubishi Heavy Industries Thermal Systems, Ltd.

Toshihisa Kondo

Nobuya Nakagawa

Tetsuo Tominaga

Hajime Izumi

Akira Katayama

Masatoshi Morishita

Hideki Suetake

Kazuo Ishii

Masashi Fujita

Shinji Deguchi

Yasuo Ishihara

Masatosi Morisita

Futoru Furuta

Masanobu Futatsuki

An air conditioning apparatus for a vehicle includes a refrigerant heaterthat is provided between an internal evaporatorand a suction side of an electric compressorto be in parallel with an external evaporator, and heats a refrigerant which is suctioned into the electric compressor; and an air conditioning control apparatusthat determines whether the external evaporatoris frosted. While the air conditioning apparatus for a vehicle operates in a heating mode, when the air conditioning control apparatusdetermines that the external evaporatoris frosted, a supply of the refrigerant subject to the heat exchange in an internal condenserto the external evaporatoris stopped, and the refrigerant is supplied to the refrigerant heater, is heated and then, is suctioned into the electric compressor

Air-conditioning apparatus for vehicle

A vehicle heat pump air-conditioning system is provided, which is capable of securing a temperature linearity characteristic during dehumidifying heating, slowing progression of a frost formation on an exterior evaporator during heating, and stably continuing a heating operation while suppressing variations in a blowout temperature. In a cooling refrigeration cycle () becoming a base, an interior condenser () disposed in a HVAC unit () is connected to an exterior condenser () in parallel via switching means (), an exterior evaporator () is connected to first decompression means () and an interior evaporator () in parallel via second decompression means (), a heating heat pump cycle () is configured, the first decompression means () and the second decompression means () are on-off valve function attached decompression means (), and the exterior evaporator () and the interior evaporator () can be simultaneously used during dehumidifying heating and heating.

Vehicle heat pump air-conditioning system

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

An air-conditioning apparatusfor a vehicle has an air supply ductfor supplying air and a ventcommunicating with the air supply ductfor blowing the air into a compartment of the vehicle. The direction of the air blown from the ventis adjustable. The air supply ductincludes a branch chamberfor reducing flow speed of the air flowing through the air supply ductso that the speed-reduced air in the branch chamberis blown from the vent

Air-conditioning apparatus

A vehicle air-conditioning system has an evaporator for receiving air discharged into a casing of the system and changing the air to a cold air flow that can flow rearward, and a heater for selectively receiving at least a portion of the cold air flow and heating such portion to a warm air flow. The system includes partition means for directing the warm air flow to permit mixing of the warm air flow and the remaining cold air flow that bypasses the heater. The partition means includes a top end portion and guide means for downwardly directing the cold, warm, or the mixed cold and warm air which has flowed beyond the top end portion for blowing-out such air out of the system. The top end portion defines a surface having a streamlined or curved configuration along which the cold, warm, or mixed cold and warm air can flow.

A vehicle air-conditioning duct has an oblong cross-sectional configuration. The air-conditioning duct has a top wall , a bottom wall and side walls enclosing an interior space and at least one constriction formed by a projection protruding from at least one of the top wall and the bottom wall into the air-conditioning duct so as to connect the top wall with the bottom wall . The constriction continuously extends in an air flow direction so that cross-sectional areas of the constriction are constant in the air flow direction.

Air-conditioning duct for vehicle

An air conditioning system mountable in the rear of a vehicle having a vent mode and a foot mode is disclosed. The air conditioning system comprises a casing, an evaporator mounted at an upper front portion within the casing, a heater core mounted below the evaporator such that the evaporator and the heater core are not superposed when seen in a vehicle front-to-rear direction. A temperature controlling damper is provided for controlling rate of air which is directed toward the heater core so as to attain a selected final temperature of the air which is discharged into a passenger compartment of the vehicle. Vent and foot outlets are also provided.

Air-conditioning system for a vehicle

An air conditioner for a vehicle comprises an air conditioner housing and an air intake formed in the air conditioner housing. An evaporator is disposed downstream of the air intake and an heater core is disposed downstream of the evaporator. Vent and foot outlets are formed in the housing downstream of the evaporator. The air conditioner further includes a first passage defined between the evaporator and the heater core and a guide plate disposed downstream of the heater core for directing hot air heated by passing through the heater core toward cool air not passing through the heater core. The air conditioner further includes means for conducting part of the hot air from the heater core guided by the guide plate to the vent outlet and/or for conducting part of the cool air not passing through the heater core to the foot outlet, and a first distributing mechanism for opening and closing the vent outlet and for selectively directing mixed air composed of the cool air from the evaporator and the hot air from the heater core guided by the guide plate toward the vent outlet and/or the foot outlet.

Air conditioner for vehicle

An air conditioning system for a vehicle is disclosed. The air conditioning system includes a casing, an evaporator, a heater core at a rear side of the evaporator, and a mixing area for mixing a first air bypassing the heater core with a second air flowing through the heater core. The system further includes a partition plate for guiding the second air to the mixing area after the second air flows through the heater core, a foot passage, a defrosting passage, a vent outlet, and a defrosting outlet. The system still further includes a temperature controlling damper for controlling rates of the first air and the second air after the first and second airs flows through the evaporator so as to attain a predetermined final temperature of the air which is discharged into a passenger compartment of the vehicle. The system further includes a vent damper, a foot damper and a defrosting damper.

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Aichi, Japan

Toshihisa Kondo