JPS5682625A - Air-conditioner for vehicle - Google Patents

Abstract

PURPOSE:To enable control for comfortable air conditioning without a feeling of physical incompatibility by a method wherein the device is made to operate with the maximum capacity when the deviation of a room temperature from a set temperature exceeds a prescribed value, then the control of a blow-out airflow is conducted precedently and next the control of a blow-out temperature is started. CONSTITUTION:Based on the deviation of the output of a thermistor 12 detecting the room temperature from the output by a variable resistor 13 in accordance with the set temperature, an actuator 6 for an air mix door 7 and the fan motor of an airflow controlling part 50 are controlled. On the occasion, when the abovementioned deviation exceeds the prescribed value, the air conditioner is made to operate with the maximum capacity through the maximum temperature controlling circuit 32 and the maximum airflow controlling circuit 58. In addition, in the abovementioned controlling circuit 32 is provided a memory circuit 43 storing a signal for controlling the blow-out temperature at the maximum or minimum, and when the blow-out airflow falls below a prescribed value, the content of memory in the memory circuit 43 is cleared by the output of an NOR circuit 72 as an airflow detecting circuit.