Abstract: An air conditioning apparatus for a vehicle includes a refrigerant heater 41 that is provided between an internal evaporator 8 and a suction side of an electric compressor 20 to be in parallel with an external evaporator 32, and heats a refrigerant which is suctioned into the electric compressor 20; and an air conditioning control apparatus 50 that determines whether the external evaporator 32 is frosted. While the air conditioning apparatus for a vehicle operates in a heating mode, when the air conditioning control apparatus 50 determines that the external evaporator 32 is frosted, a supply of the refrigerant subject to the heat exchange in an internal condenser 9 to the external evaporator 32 is stopped, and the refrigerant is supplied to the refrigerant heater 41, is heated and then, is suctioned into the electric compressor 20.

Abstract: 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 (14) becoming a base, an interior condenser (8) disposed in a HVAC unit (2) is connected to an exterior condenser (10) in parallel via switching means (15), an exterior evaporator (17) is connected to first decompression means (12) and an interior evaporator (7) in parallel via second decompression means (16), a heating heat pump cycle (18) is configured, the first decompression means (12) and the second decompression means (16) are on-off valve function attached decompression means (12, 16), and the exterior evaporator (17) and the interior evaporator (7) can be simultaneously used during dehumidifying heating and heating.

Abstract: A vehicle air-conditioning system (1) includes an HVAC unit (2) in which a first refrigerant evaporator (7) and a second refrigerant condenser (8) are disposed in an air channel (6) communicating with a vehicle interior space; and a heat pump cycle (3) in which a refrigerant compressor (9), a refrigerant switching device (10), a first refrigerant condenser (11) that exchanges heat with the outside air, a first expansion valve (14), and a first refrigerant evaporator (7) are connected in sequence and in which the second refrigerant condenser (8) is connected in parallel with the first refrigerant condenser (11) via the refrigerant switching device (10). An exhaust-heat recovery circuit (23) equipped with a second refrigerant evaporator (18) disposed in a ventilation channel (19) from the vehicle interior and a second expansion valve (17) is connected in parallel with the first expansion valve (14) and the first refrigerant evaporator (7) of the heat pump cycle (3).

Abstract: 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.

Abstract: 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 (14) becoming a base, an interior condenser (8) disposed in a HVAC unit (2) is connected to an exterior condenser (10) in parallel via switching means (15), an exterior evaporator (17) is connected to first decompression means (12) and an interior evaporator (7) in parallel via second decompression means (16), a heating heat pump cycle (18) is configured, the first decompression means (12) and the second decompression means (16) are on-off valve function attached decompression means (12, 16), and the exterior evaporator (17) and the interior evaporator (7) can be simultaneously used during dehumidifying heating and heating.

Abstract: An air conditioning apparatus for a vehicle includes a refrigerant heater 41 that is provided between an internal evaporator 8 and a suction side of an electric compressor 20 to be in parallel with an external evaporator 32, and heats a refrigerant which is suctioned into the electric compressor 20; and an air conditioning control apparatus 50 that determines whether the external evaporator 32 is frosted. While the air conditioning apparatus for a vehicle operates in a heating mode, when the air conditioning control apparatus 50 determines that the external evaporator 32 is frosted, a supply of the refrigerant subject to the heat exchange in an internal condenser 9 to the external evaporator 32 is stopped, and the refrigerant is supplied to the refrigerant heater 41, is heated and then, is suctioned into the electric compressor 20.

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

Abstract: A vehicle air-conditioning system (1) includes an HVAC unit (2) in which a first refrigerant evaporator (6) and a second refrigerant condenser (7) are disposed in an air channel (5) communicating with a vehicle interior space; and a heat pump cycle (3) in which a refrigerant compressor (8), a refrigerant switching device (9), a first refrigerant condenser (10) that exchanges heat with the outside air, a first expansion valve (13), and a first refrigerant evaporator (6) are connected in sequence and in which the second refrigerant condenser (7) is connected in parallel with the first refrigerant condenser (10) via the refrigerant switching device (9). An exhaust-heat recovery circuit (21) equipped with a second refrigerant evaporator (16) disposed in a ventilation channel (17) from the vehicle interior and a second expansion valve (15) is connected in parallel with the first expansion valve (13) and the first refrigerant evaporator (6) of the heat pump cycle (3).

Abstract: An air-conditioning apparatus 1 for a vehicle has an air supply duct 6 for supplying air and a vent 40 communicating with the air supply duct 6 for blowing the air into a compartment of the vehicle. The direction of the air blown from the vent 40 is adjustable. The air supply duct 6 includes a branch chamber 14, 16 for reducing flow speed of the air flowing through the air supply duct 6 so that the speed-reduced air in the branch chamber 14, 16 is blown from the vent 40.

Abstract: 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.

Abstract: 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.

Abstract: A vehicle air-conditioning duct 1 has an oblong cross-sectional configuration. The air-conditioning duct 1 has a top wall 16, a bottom wall 18 and side walls 12, 14 enclosing an interior space and at least one constriction 22, 24 formed by a projection protruding from at least one of the top wall 16 and the bottom wall 18 into the air-conditioning duct 1 so as to connect the top wall 16 with the bottom wall 18. The constriction 22, 24 continuously extends in an air flow direction so that cross-sectional areas of the constriction 22, 24 are constant in the air flow direction.

Abstract: 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.

Abstract: An air-conditioning apparatus 1 for a vehicle according to the present invention comprises an air supply duct 6 for supplying air and a vent 40 communicating with the air supply duct 6 for blowing the air into a compartment of the vehicle. The direction of the air blown from the vent 40 is adjustable. The air supply duct 6 includes a branch chamber 14, 16 for reducing flow speed of the air flowing through the air supply duct 6 so that the speed-reduced air in the branch chamber 14, 16 is blown from the vent 40.

Abstract: A vehicle air-conditioning system (1) according to the present invention has an evaporator (4), a heater core (6), a temperature controlling damper (20) for controlling the amounts of air passed and not passed through the heater core, a plurality of discharge outlets (22, 24, 26), a mode setting means (36) for manually selecting and setting a specific mode, a mode setting means (36) for manually setting a desired temperature, and a characteristic setting means for previously setting a predetermined relationship (shown by a line A in FIG. 4) between the temperature setting means and the damper opening of the temperature controlling damper by using a program such that the relationship between the temperature set by the temperature setting means and the air temperature at the discharge outlets has a predetermined characteristic (shown by a line C in FIG. 4), in the specific mode set by said mode setting means.

Abstract: An vehicle air-conditioning system (1) according to the present invention has an evaporator (4) for receiving an air being discharged into a casing (2) of the system by a blower and changing it to a cold air flow, the cold air flow being allowed to flow rearward, and a heater (6) located downstream of the evaporator (4) for selectively receiving at least a portion of the cold air flow and heating it to a warm air flow. The air conditioning system (1) also has partition means (8) disposed downstream of the heater (6) for directing the warm air flow upwardly in such a manner as to permit mixing of the warm air flow through the heater (6) and the remaining cold air flow bypassing the heater (6) thereabove, the partition means (8) including a top end portion (10), and guide means (11) for downwardly directing the cold air, the warm air or the mixture of cold and warm airs which has flowed beyond the top end portion (11) of said partition means (8) for blowing-out.

Abstract: A vehicle air-conditioning duct 1 according to the present invention has an oblong cross-sectional configuration. The air-conditioning duct 1 comprises a top wall 16, a bottom wall 18 and side walls 12, 14 enclosing an interior space and at least one constriction 22, 24 formed by a projection protruding from at least one of the top wall 16 and the bottom wall 18 into the air-conditioning duct 1 so as to connect the top wall 16 with the bottom wall 18. The constriction 22, 24 continuously extends in an air flow direction so that cross-sectional areas of the constriction 22, 24 are constant in the air flow direction.

Abstract: 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.

Abstract: 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.

Abstract: 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.