Air conditioner starting operation control method and device and air conditioner

Abstract

The invention relates to an air conditioner starting operation control method and device and an air conditioner. The air conditioner starting operation control method comprises the steps that an outdoor environment temperature value is obtained; according to the outdoor environment temperature value, the frequency rising mode of an air conditioner compressor is determined; and the air conditionercompressor is controlled to start and operate to the target working condition frequency according to the frequency rising mode of the air conditioner compressor. According to the control method, the load change in the starting stage is uniform by controlling the frequency rising process of the compressor in the starting stage of the air conditioner, the oil pumping speed is reduced, lubricating oil of the compressor can be evenly distributed, the empty oil running possibility of the compressor is greatly reduced, the dry grinding phenomenon of the compressor under the limit working condition is reduced or eliminated, the service life of the compressor is prolonged, the running reliability of a unit is improved, the after-sales cost is reduced, and therefore the use comfort of a user is improved.

Description

technical field [0001] The invention relates to the technical field of air conditioners, in particular to an air conditioner start-up operation control method and device and an air conditioner. Background technique [0002] The variable capacity compressor is a device that can adjust the volume ratio of different compressors according to different working conditions and loads to achieve different heating capacity requirements. Two-stage three-cylinder compressor, as a common type of variable capacity compressor, is widely used in air conditioners. [0003] In the ultra-low temperature environment outside (below -10°C), the existing air conditioner using a two-stage three-cylinder compression system, in the heating start-up stage and load changes, the air-conditioning compressor is in the frequency-up stage, and the system pumps oil The rate of oil return will be faster than the actual rate of oil return (especially for larger air-conditioning units). At this time, the compr...

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Problems solved by technology

[0003] In the ultra-low temperature environment outside (below -10°C), the existing air conditioner using a two-stage three-cylinder compression system, in the heating start-up stage and load changes, the air-conditioning compressor is in the frequency-up stage, and the system pumps oil The rate will be faster than the actual rate of oil return (especially for larger air-conditioning units). At this time, the compressor is prone to wear due to less oil return, which will affect the service life of the compressor; in addition, the lack of oil in the compressor will easily lead to current If it is too large, it is prone to shutdown protection, which will affect the reliability of the unit operation and reduce the comfort of users

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