A heating control method, system and air conditioner for a crankcase heating belt

Abstract

The invention particularly relates to a heating control method and system of a crankcase heating belt and an air conditioner. The heating control method and the heating control system have the beneficial effects that the temperature of a crankcase of a compressor can be judged more accurately through acquiring the compressor exhaust gas temperature and / or compressor bottom temperature, so that a heating control method of the crankcase is improved, the compressor can be protected more effectively, the situation of untimely protection is reduced, the situation of overprotection can be reduced, noneffective electricity consumption is avoided, and the purpose of energy conservation is achieved.

Description

technical field [0001] The invention relates to the field of air conditioning control, in particular to a heating control method, system and air conditioner for a crankcase heating belt. Background technique [0002] With the improvement of people's living standards, air conditioners are used more and more widely, and the requirements for reliability and energy saving of air conditioners are also higher and higher. As the core component of the air conditioning system, the compressor's reliability is very critical. Usually at low temperature, if the air conditioning system is shut down for a period of time, a large amount of liquid refrigerant will exist in the compressor cavity due to the migration of the refrigerant, resulting in the serious dilution of the compressor lubricating oil, and the viscosity of the lubricating oil may also be affected at low temperatures. Influenced, leading to weakening of the lubrication function, even directly affecting the life of the compre...

AI Technical Summary

Problems solved by technology

However, due to the noise reduction protection measures of the compressor and the influence of the residual heat of the compressor, the ambient temperature T is quite different from the actual temperature around the compressor. At this time, the ambient temperature cannot reflect the actual compressor temperature, and it is impossible to correctly determine whether the compressor needs a crankshaft. Heating, this situation may cause two problems: one is that the heating cannot be performed in time, and the compressor cannot be effectively and timely protected; the other is that there may be continuous heating without protection, resulting in ineffective consumption of electricity and increasing energy waste

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