Control method, control system and air conditioner

Abstract

The invention provides a control method, a control system and an air conditioner. The control method is used for controlling the air conditioner and comprises the following steps: acquiring the current working temperature of an indoor heat exchanger through a temperature detection device; judging whether the current working temperature is larger than or equal to a first preset temperature; when judging that the current working temperature is larger than or equal to the first preset temperature, setting the rotating speed of an door fan in a first rotating speed range. By the adoption of the technical scheme, the rotating speed of the indoor fan is automatically controlled according to temperature variation, the operation pressure of the system can be effectively reduced to further ensure that a compressor operates normally, therefore, on one hand, the continuous output of the heating effect of the air conditioner can be ensured, and on the other hand, the compressor is prevented from operating for a long time under a condition of exceeding an allowable working pressure, the system control flexibility, the system operation reliability and the system operation stability are improved and the service life of the compressor is prolonged.

Description

technical field [0001] The present invention relates to the technical field of air conditioning, in particular, to a control method, a control system and an air conditioner. Background technique [0002] At present, the window air conditioner belongs to the integral air conditioner, and a motor drives the inner and outer wind wheels to exchange heat, so the inner and outer rotation speeds are the same. Generally, the speed of the window machine is divided into three gears: high, medium and low. Considering noise and other considerations, the design speed of low wind gear is generally not high, and the size of the inner heat exchanger is also limited due to the structural cost of the window unit. For low wind, the pressure on the high-pressure side of the system can easily exceed the allowable pressure range of the compressor, which will cause the compressor to trip, the system cannot work normally, the reliability is poor, and the compressor is easily damaged, which may cau...

AI Technical Summary

Problems solved by technology

However, when the outer heat exchanger is large and the displacement of the compressor is relatively large, the user turns on the low wind speed for heating, and the pressure on the high pressure side will be relatively large. In a few cases, even if the external fan is completely stopped, the high pressure The pressure still exceeds the allowable pressure range of the compressor, which causes the compressor to trip, the system cannot work normally, and the reliability is poor

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