Rotation speed control method of air conditioner compressor and air conditioner

Abstract

The invention discloses a rotation speed control method of an air conditioner compressor and an air conditioner. The method comprises the following steps of: firstly detecting the temperature Tw of an environment in which an outdoor machine of the air conditioner is located; then determining an allowed running current value I of the air conditioner compressor according to the temperature Tw of the outdoor environment as well as a running mode of the air conditioner; and finally, detecting a real-time current value Ict of the air conditioner compressor, comparing the real-time current value Ict with the allowed running current value I, and lowering the rotation speed of the air conditioner compressor if the Ict>1 until meeting the condition that Ict<=1. The air conditioner provided by the invention implements different control strategies on the rotation speed of the compressor through the temperature of the outdoor environment, when the temperature of the outdoor environment is high, current passing through the compressor and a driving board canbe limited by limiting the rotation speed of the compressor, and thus the running current of the air compressor is always restricted within a range in which each electricity load on the driving board can run safely, so that the safety of the operation of the driving board is ensured, and the running reliability of the whole air conditioner is improved.

Description

technical field [0001] The invention belongs to the technical field of air conditioning and refrigeration engineering, and in particular relates to a method for controlling the rotational speed of an air conditioner compressor and an air conditioner designed using the rotational speed control method. Background technique [0002] With the gradual warming of the earth's climate and the continuous improvement of people's living standards, air-conditioning products have gradually entered thousands of households and are widely used. Existing air-conditioning products generally include two parts: indoor unit and outdoor unit. mode, if the outdoor ambient temperature is greater than or equal to 38°C, the outdoor ambient temperature is considered high; second, when the air conditioner is working in heating mode, if the outdoor ambient temperature is greater than or equal to 10°C, the outdoor ambient temperature is considered high ), the air conditioner often runs in the overload a...

AI Technical Summary

Problems solved by technology

[0003] In order to solve the problem that existing air-conditioning products operate when the outdoor environment temperature is high, the operating current of the air conditioner is likely to be too large, thereby affecting the reliability of the whole machine, and a method of limiting the operating current of the air conditioner by controlling the compressor speed is proposed. method to improve the reliability of the whole machine operation

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