JPS574417A - Automatic air conditioner - Google Patents

Abstract

PURPOSE:To improve the visual indication and the manoeuverability of manual operation in an automatic air conditioner as ensuring the safety of operation by providing a manual switch to increase or decrease the amount of wind together with an oscillation sound at the time of dissatisfaction to the present amount of wind automatically set, a wind-amount indicator. CONSTITUTION:A blower motor 13 is constantly and automatically controlled by an AUTO 23 via a microcomputer 22 on the basis of signals issued from an open air sensor 2, an inner air sensor 3, and a set temperature resistance 4. The conditioned air is sent into a car room via an evaporator 10, a water-heater 11, and others. At this stage, a wind-amount increasing switch 20 and a wind-amount reducing switch 21 are connected to the microcomputer 22 for adapting for manual operation. At the time of the dissatisfaction to the air amount automatically set, for example, to increase the amount of wind, when the above-said switch 20 is thrown in, the increase of the set amount of wind can be indicated by a wind-amount indicator 29 as generating an oscillation sound of a high frequency from a speaker 30. Similarly, for reducing the amount of wind, an oscillation sound of a low frequency can be generated.