Air conditioner halt control method and device and air conditioner

Abstract

The invention provides an air conditioner halt control method and device and an air conditioner. The air conditioner halt control method includes the steps that after a halt instruction is received, a current operation parameter of a compressor is obtained; the relationship between the current operation parameter of the compressor and a corresponding halt threshold value is judged; when it is judged that the current operation parameter of the compressor is larger than the corresponding halt threshold value, the compressor is controlled to be subjected to underclocking or unloading; when it is judged that the current operation parameter of the compressor is smaller than or equal to the corresponding halt threshold value, the compressor is controlled to be subjected to direct halt. By means of the air conditioner halt control method and device and the air conditioner, it can be guaranteed that the compressor is halted only under the situations that he load is small, and operation frequency is low, severe joggle, caused by sudden halt of the compressor, of the compressor and piping of the compressor is avoided, standard exceeding of the compressor piping is effectively prevented, pipe stress and deformation are reduced, the piping service life is prolonged, and use reliability of the air conditioner is improved.

Description

Technical field [0001] The present invention relates to the technical field of air conditioners, in particular to a shutdown control method of an air conditioner and an air conditioner shutdown control device, and also to an air conditioner. Background technique [0002] At present, when the inverter air conditioner in the related technology receives the shutdown command, the general processing method is to directly stop the operation, such as figure 1 As shown, the outdoor unit stops directly after the compressor operates; the indoor unit stops immediately after receiving the shutdown command in the refrigeration cycle, and the indoor unit stops after t3 time after receiving the shutdown command in the heating cycle. When the system pressure is relatively large, or the compressor is running at a high frequency, if the compressor is suddenly stopped at this time, the compressor and piping will vibrate violently due to the sudden change of refrigerant pressure, flow rate, flow rate...

AI Technical Summary

Problems solved by technology

When the system pressure is relatively high, or the operating frequency of the compressor is high, if the compressor is suddenly stopped at this time, the compressor and piping will vibrate violently due to the sudden change of refrigerant pressure, flow rate, flow rate and inertial effect. Actual research and tests have found that the larger the displacement of the single-rotor compressor, because of its larger moment of inertia, the greater the impulse generated by the fluid, this phenomenon is more obvious. If it is not controlled at this time, it will easily lead to excessive piping stress and frequent start-ups for many times. Stopping will lead to a decrease in the service life of the piping, cracked pipes, fluorine leakage or broken pipes

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