초록 ▼

The apparatus of the invention is a vehicular air conditioner using a heat pump with a compressor unit 20 equipped with a compressor 31, a throttling resistance 34 and a four way valve 33, connected by a refrigerant path 30 to an indoor heat exchanger 25 for effecting heat exchange between a refrige

The apparatus of the invention is a vehicular air conditioner using a heat pump with a compressor unit 20 equipped with a compressor 31, a throttling resistance 34 and a four way valve 33, connected by a refrigerant path 30 to an indoor heat exchanger 25 for effecting heat exchange between a refrigerant and vehicle cabin air, and an outdoor heat exchanger 21 installed in an engine compartment for effecting heat exchange between a refrigerant and outside air, and equipped with fan 22 for drawing in outside air, and which executes a cooling operation and a heating operation by switching a direction of flow of the refrigerant. During the heating operation, if the temperature of the engine compartment goes above a predetermined value, the fan 22 for drawing in outside air is reversed so that high temperature air is discharged from the engine compartment to the outside.

대표청구항 ▼

[ What is claimed is:] [1.]1. A vehicular air conditioner using a heat pump, with a compressor unit equipped with a compressor, a throttling resistance and a four way valve, connected by a refrigerant path to an indoor heat exchanger for effecting heat exchange between a refrigerant and intake air,

[ What is claimed is:] [1.]1. A vehicular air conditioner using a heat pump, with a compressor unit equipped with a compressor, a throttling resistance and a four way valve, connected by a refrigerant path to an indoor heat exchanger for effecting heat exchange between a refrigerant and intake air, and an outdoor heat exchanger installed in an engine compartment for effecting heat exchange between a refrigerant and outside air, and equipped with a fan for drawing in outside air through the outdoor heat exchanger, and which executes a cooling operation and a heating operation by switching a direction of flow of said refrigerant,wherein during said heating operation, if the temperature of said engine compartment goes above a predetermined value, said fan for drawing in outside air is reversed so that high temperature air is discharged from said engine compartment to an outside.