Control method and device for air conditioner compressor and air conditioner

Abstract

The invention relates to the technical field of intelligent control, and discloses a control method for an air conditioner compressor. The control method comprises the following steps that a first correction temperature is obtained according to the first actual temperature of an inner coil pipe and an amplitude reduction correction value; when the first correction temperature is larger than the first preset temperature, the compressor is controlled to operate at a first frequency reduction speed in a frequency reduction mode; a second correction temperature is obtained according to the second actual temperature of the inner coil pipe and the amplitude reduction correction value; a second temperature difference is acquired; and when the second temperature difference is smaller than or equal to the first set temperature difference, the compressor is controlled to operate at a second frequency reduction speed in a frequency reduction mode. In the frequency reduction operation stage of the compressor, the temperature rise amount within the set detection interval duration is used as a switching parameter of fast frequency and slow reduction, the lag degree between the temperature of the inner coil pipe and the frequency rise of the compressor is reduced, and the phenomenon of dead halt caused by too fast reduction of the frequency of the compressor is avoided; On the basis, the actual temperature of the inner coil pipe can be subjected to amplitude reduction correction, and the stability of the compressor is improved. The invention further discloses a control device and the air conditioner.

Description

technical field [0001] The present application relates to the technical field of intelligent air conditioners, for example, to a control method and device for an air conditioner compressor and an air conditioner. Background technique [0002] At present, during the heating operation of the air conditioner, for example, normal heating mode, high-temperature self-cleaning mode, switching from defrosting to heating operation mode, etc., it is necessary to increase the frequency of the compressor to increase the outlet air temperature to reach the target temperature, for example, 56°C or higher in high temperature self-cleaning mode. At present, the boost control for the frequency of the compressor generally includes an up-frequency operation phase, a constant frequency operation phase and a down-frequency operation phase, so as to ensure that the compressor frequency matches the load of the refrigeration cycle system. [0003] In actual operation, because the change of the coi...

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Problems solved by technology

[0006] The embodiments of the present disclosure provide a control method and device for an air conditioner compressor and an air conditioner to solve the problem that the temperature of the coil tube lags behind the decrease in the frequency of the compressor during the period of controlling the frequency reduction of the compressor. The frequency decreases too fast, resulting in the problem of compressor crash

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