Air conditioner for vehicle

Abstract

The present invention relates to a vehicle air conditioner, in particular to a vehicle air conditioner which can effectively prevent the cold air flowing to the rear seat control center ventilation hole from being heated by the heater core in the full cooling mode. The vehicle air conditioner according to the present invention includes an air conditioner cover (200), which is communicated with the mixing chamber MC, and at the outlet thereof, the opening degree is adjusted by the respective mode doors (220d, 222d) and (224d). Defroster holes (220), front air vents (222) and front seat bottom vents (224), which have left / right side covers (200a, 200b) that overlap left and right; evaporator E and heater core H; control center air vent (226) for the rear seat; temperature adjustment door (230) for the front seat; main temperature control door (232) for the rear seat; auxiliary temperature control door (226d) for the first rear seat And the auxiliary temperature control door (240) for the second rear seat.

Description

technical field [0001] The present invention relates to a vehicle air-conditioning device, in particular to a vehicle air-conditioning device in which the air-conditioning control of front, rear, left, and right (4-Way Zone) can be performed independently. Cool air from the control center vents is heated by the heater core. Background technique [0002] The vehicle air conditioner includes a refrigeration system for cooling the interior of the vehicle and a heating system for heating the interior of the vehicle. Refrigeration system, driven by the compressor, the refrigerant passes through the condenser, dryer (Receiver Dryer), expansion valve and evaporator, and circulates at the compressor, and is blown over the surface of the evaporator by the blower. Heat exchange occurs, and the above-mentioned blown air becomes cold air and is discharged into the interior of the vehicle, thereby constituting the vehicle cooling system. At the same time, in the heating system, the coo...

AI Technical Summary

Problems solved by technology

[0018] but, figure 2 In the vehicle air conditioner shown, since the control center side cold air bypass passage P3 is directly connected to the lower part of the heater core H, the cold air supplied through the control center side cold air bypass passage P3 is heated by the heat conducted from the heater core H, so , reduces the effect of suppressing the temperature rise of the air discharged through the control center vent 126

And, the lower end portion of the heater core H is recessed toward the above-mentioned control center side cool air bypass passage P3, in this case, a part of the control center side cool air bypass passage P3 surrounds the heater core H, therefore, the cool air flows in the heater core. The phenomenon of being heated under the action of H is more obvious, and the air volume of the air flowing through the cold air bypass passage P3 on the side of the control center is also reduced, resulting in the inability to effectively control the temperature of the air discharged through the control center vent 126

[0019] In addition, if figure 2 In the shown vehicle air conditioner, the air conditioner cover 100 is usually composed of left / right covers 100a, 100b (refer to image 3 ) in two parts, or adopt a structure composed of three parts of the left / right outer cover and the lower outer cover, so if image 3 As shown, through the left and right joint parts 114 of the left / right outer covers 100a, 100b, the warm air leaks from the warm air passage P2 to the control center side cold air bypass passage P3 through the heater core H. Therefore, there is a control center side cold air bypass. The problem that the temperature of the air discharged from the control center vent 126 in the passage P3 is further increased

[0020] In addition, during full cooling operation, relative to the control center vent hole 126, the warm air passage P2 is closed by the second temperature regulating door 142, even so, there is also the sealing surface (Sealing Surface) and the second warm air passing through the air conditioner cover 100. Adjust the gap between the doors 142, and the air leaks from the warm air passage P2 to the vent hole 126 of the control center

[0021] In addition, in order to adjust the temperature, all five doors, 130, 132, 134, 140, and 142, are required. Therefore, a driving device such as a driver for driving the above-mentioned doors is required, and there is a disadvantage of increasing the number of parts.

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