Method and device for controlling air conditioner to stop, and air conditioner

Abstract

The invention provides a method and device for controlling an air conditioner to stop, and the air conditioner. The air conditioner comprises a compressor, a throttling mechanism, an indoor fan and an outdoor fan. The method for controlling the air conditioner to stop comprises the steps of obtaining current operation parameters of the compressor after a stopping instruction is received, judging the relationship between the current operation parameters of the compressor and a corresponding stopping threshold value, and when it is judged that the current operation parameters of the compressor are smaller than or equal to the corresponding stopping threshold value, controlling the throttling mechanism to be adjusted to the first preset stopping opening degree of a current operation mode, and controlling the compressor to stop operating after a preset duration. Through the method for controlling the air conditioner to stop, the situation that a compressor and compressor tubing shake due to sudden stop of the compressor is avoided, the compressor can be stopped under small loads and low operation frequency, stress generated on the compressor tubing when the compressor is stopped is reduced, and the service life of the tubing is prolonged.

Description

technical field [0001] The present invention relates to the field of air conditioner control, in particular to an air conditioner shutdown control method, a control device and an air conditioner. Background technique [0002] The shutdown control method of the air conditioner in the related art is as figure 1 As shown, step 102', after receiving the shutdown command, obtain the current operating parameters of the compressor; step 104', judge whether the current operating parameters of the compressor meet the shutdown conditions; step 106', when the judgment result is yes, control The compressor stops running, and after a preset period of time, control the throttling mechanism to adjust to the preset opening degree; step 106', when the judgment result is no, control the throttling mechanism to maintain the current opening degree, and the compressor performs frequency reduction or unloading , and stop running. Since the compressor stops running directly when receiving the sh...

AI Technical Summary

Problems solved by technology

Since the compressor stops running directly when receiving the shutdown command, the compressor stops suddenly in the operating state with relatively high system pressure and high frequency. Piping violently shakes, causing the stress of the piping to exceed the standard, affecting the service life of the piping, causing the piping to crack, leak fluorine or break the pipe

At the same time, according to actual research and testing, it is found that the single-rotor compressor with larger displacement has a larger moment of inertia, and the impulse generated by the fluid is also larger. The above phenomenon is obvious. If it is not controlled, it will seriously affect the service life of the piping and the life of the whole machine.

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