초록 ▼

An air conditioning apparatus includes a heating heat exchanger for heating air blown toward a passenger compartment using hot water as a heating source. A plurality of electric heating members are formed integrally with the heating heat exchanger, and electric power supplied to the electric heating

An air conditioning apparatus includes a heating heat exchanger for heating air blown toward a passenger compartment using hot water as a heating source. A plurality of electric heating members are formed integrally with the heating heat exchanger, and electric power supplied to the electric heating members is controlled according a temperature of the hot water. Therefore, a number of the electric heating members to be operated is finely controlled according to the temperature of water flowing through the heating heat exchanger. Further, when a water temperature of the heating heat exchanger is lower than a predetermined temperature (e.g., 35.degree. C.), a water valve is closed to interrupt the flow of water to the heating heat exchanger, and a blower is operated. Therefore, a quantity of heat transmitted from the electric heating members to the water in the heating heat exchanger can be greatly decreased.

대표청구항 ▼

[ What is claimed is:] [1.] An air conditioning apparatus for a vehicle having a passenger compartment, the air conditioning apparatus comprising:a case for forming an air passage through which air is blown toward the passenger compartment;a heating heat exchanger, disposed in said case, for heating

[ What is claimed is:] [1.] An air conditioning apparatus for a vehicle having a passenger compartment, the air conditioning apparatus comprising:a case for forming an air passage through which air is blown toward the passenger compartment;a heating heat exchanger, disposed in said case, for heating air using a fluid flowing through said heating heat exchanger as a heating source;a plurality of electric heating members, disposed in said case, for heating air flowing through said air passage;a control unit for controlling electric power supplied to said electric heating members according to a temperature of the fluid supplied to said heating heat exchanger, in such a manner that the whole electric heating members are turned off when the temperature of the fluid is higher than a first predetermined temperature, and a number of said electric heating members to be turned on is increased as the temperature of the fluid is lowered from the first predetermined temperature.