Patent ID: 6059197
Filing Date: 2000-05-09
Classification: B60H

Abstract:
An automotive air-conditioner having a hot-water heating system, the heating system including a closed passage for circulating water, circulation means for circulating the water, heating means for heating the water and heat exchanging means for exchanging heat between the water and air to be fed into an interior of an automobile, comprising:(a) means for setting an air-conditioning temperature;(b) means for detecting a temperature of the heated water;(c) a power supply for supplying an electric power to the heating means;(d) a first switching means for controlling an electric supply from the power supply to the heating means;(e) a second switching means associated with said first means for controlling the electric supply from the power supply to the heating means;(f) a controller designed so as to control the first switching means in response to the set temperature and the detected temperature to adjust the temperature of the water to a certain control temperature determined by the set temperature, and to discontinue the electric supply to the heater by switching off the second switching means when the water temperature is greater than a reference temperature.