Oil temperature heating belt control method and air conditioner

Abstract

The invention discloses an oil temperature heating belt control method and device. The control method comprises the following steps that the exhaust temperature Tp, outdoor ambient temperature Tw andindoor ambient temperature Tn of an exhaust pipe are detected; whether the difference between Tw and Tn is less than the preset temperature T1 or not is judged, and whether the difference between Tp and Tw is less than the preset temperature T2 or not is judged; when Tw-Tn is smaller than Ti and Tp-Tw is smaller than T2, an oil temperature heating belt is controlled to be energized; when the oil temperature heating belt is energized, Tp, Tw and Tn are detected continuously; whether Tw-Tn is larger than or equal to T3 or not or Tp-Tw is larger than or equal to T4 or not is judged; and when Tw-Tn is larger than or equal to T3 or Tp-Tw is larger than or equal to T4, the oil temperature control heating belt is controlled to be powered off, and a regulation process is completed. By means of thecontrol method, on-demand starting is realized, unnecessary power consumption of the air conditioner is reduced, standby power of the air conditioner is reduced, energy conservation is improved, andthe service life of the oil temperature heating belt is prolonged.

Description

technical field [0001] The invention relates to the technical field of air conditioners, in particular to an oil temperature heating belt control method and an air conditioner. Background technique [0002] In the air conditioner of the prior art, when the compressor stops running for a long time, a large amount of refrigerant may accumulate at the bottom of the compressor. When the compressor is started, the compressor will absorb a large amount of liquid refrigerant to generate liquid compression. At the bottom of the compressor it can also cause the lubricating oil to be diluted, causing poor lubrication in the compressor. Both hydraulic compression and poor lubrication will cause damage to the compressor. Therefore, in order to avoid the accumulation of refrigerant at the bottom of the compressor when the compressor is shut down, an oil temperature heating zone is generally added at the bottom of the compressor. When the compressor stops running, the oil temperature hea...

AI Technical Summary

Problems solved by technology

[0006] 1. Immediately after the compressor is turned off and for a long period of time afterwards, when the temperature of the compressor is higher than the outdoor ambient temperature by a certain temperature, the liquid refrigerant will not accumulate at the bottom of the compressor. Turning on the oil temperature heating belt at this time will cause energy waste;

[0007] 2. When the outdoor temperature is higher than the indoor temperature, the liquid refrigerant will accumulate in the indoor unit instead of the bottom of the compressor, and the oil temperature heating belt will be turned on at this time, resulting in energy waste;

[0008] 3. When the compressor is heated by the oil temperature heating belt to a certain temperature higher than the outdoor ambient temperature, the liquid refrigerant will not accumulate at the bottom of the compressor. At this time, turning on the oil temperature heating belt will cause energy waste;

[0009] 4. The service life of the oil temperature heating belt is greatly reduced. After 2 to 3 years of use of the air conditioner, the oil temperature heating belt may fail, causing the compressor to stop for a long time and then start it again, and the liquid compressor and lubricating oil will be diluted. leading to premature compressor damage

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