Preheating control method and device of compressor, compressor and air conditioner

Abstract

The invention provides a preheating control method and device of a compressor, the compressor and an air conditioner, and relates to the technical field of air conditioners. The method and the deviceare characterized in that historical power-on information, housing top temperature and outdoor environment temperature of the compressor are acquired, then when the historical power-on information represents different states, whether the compressor needs to be preheated or not is determined according to the housing top temperature and the outdoor environment temperature or whether the compressor needs to be preheated or not is determined according to the housing top temperature, the outdoor environment temperature and the obtained idle time of the compressor, and if the compressor needs to bepreheated, the compressor is controlled to enter a preheating state. According to the method and the device, whether the compressor is powered on for the first time or powered on after being idle fora long time is determined through the historical power-on information, so that no matter which state the compressor is in, the compressor has a mode which is matched with the state of the compressor and is used for determining whether the compressor needs to be preheated or not, namely, whether the compressor needs to be preheated or not is determined in a mode which is more practical, the operation is relatively flexible, and the time and the labor cost can be saved to a certain extent.

Description

technical field [0001] The invention relates to the technical field of air conditioners, in particular to a compressor preheating control method and device, a compressor and an air conditioner. Background technique [0002] The high-capacity multi-connected units with top air discharge mostly use high-pressure chamber scroll frequency conversion compressors. At the bottom of the compressor cavity is a lubricating oil pool, which collects the classified lubricating oil in the internal exhaust and supplies it to the crankshaft. After the unit is placed for a long time, a large amount of refrigerant will be dissolved in the lubricating oil in the oil pool at the bottom. At this time, when the unit is powered on and started to operate, there may be the possibility of dilution of the refrigeration oil and wear due to lack of oil. [0003] In the prior art, most manufacturers usually preheat the compressor directly when the unit is powered on. But in fact, depending on the statu...

AI Technical Summary

Problems solved by technology

But in fact, depending on the status of the compressor, preheating is only required when the operating parameters of the compressor meet certain conditions. In this way, forced preheating will consume a lot of time for the installer and commissioner, resulting in low efficiency and high labor costs.

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