Air conditioner and pre-heating control method and device of compressor

Abstract

The invention discloses a pre-heating control method of an air conditioner compressor. The control method comprises the following steps of detecting the temperature of an outside machine of an air conditioner in real time; generating pre-heating current to perform pre-heating on the compressor when the temperature of the outside machine is smaller than a preset target temperature and an absolute value of the difference of the temperature of the outside machine and the preset target temperature is larger than or equal to a first temperature threshold value; adjusting the pre-heating current in the compressor pre-heating process according to the real-time temperature of the outside machine. By adopting the pre-heating control method, the pre-heating time can be shortened, the overall efficiency can be improved, the system energy efficiency performance can be improved, and starting current of the air conditioner compressor and the air conditioner system noise can be further reduced. The invention further discloses a pre-heating control device of the air conditioner compressor and the air conditioner provided with the pre-heating control device for the air conditioner compressor.

Description

technical field [0001] The invention relates to the technical field of air conditioner compressor control, in particular to an air conditioner compressor preheating control method and device and an air conditioner with the compressor preheating control device. Background technique [0002] At present, when the traditional air conditioner preheats the compressor, it generally uses a relatively large current or a relatively small current to preheat the air conditioner compressor, or it can be set on the outer shell of the compressor. A heater method: According to the change of outdoor temperature, the air conditioner detects the outdoor temperature through the outdoor temperature sensor, and when the outdoor temperature is lower than the set temperature, the air conditioner starts the relay to make the heater set on the outer shell of the compressor work , so as to preheat the compressor. [0003] However, the traditional preheating control method has the following disadvanta...

AI Technical Summary

Problems solved by technology

[0004] 1) Use a constant high current to preheat the compressor of the air conditioner. When the current outdoor temperature and the target preheating temperature have a slight deviation, the controller will use a large current to preheat, which will cause the loss of the controller and the overall air conditioner. Efficiency is not competitive in the market;

[0005] 2) Use a constant small current to preheat the compressor of the air conditioner. Since the heating current is relatively small, the preheating time is greatly increased, which is insignificant in terms of the comfort and humanization of the air conditioner;

Images