Compressor shutdown control method, compressor startup control method and air conditioner

Abstract

The invention provides a compressor shutdown control method, a compressor startup control method and an air conditioner. The compressor shutdown control method comprises the steps that S1, a compressor receives a shutdown instruction; S2, whether the shutdown instruction is an exhaust protection shutdown instruction or not is judged, if yes, S3 is carried out; S3, the air conditioner runs according to the first running state and runs for t1 time; S4, the current exhaust temperature T<now> is detected, and whether T<now> is larger than or equal to the first preset temperature T1 or not is judged, if yes, S5 is carried out, if not, the compressor is shut down, and an outer fan is shut down; S5, a four-way valve is controlled to reverse, and operation is conducted for t2, then the four-way valve is controlled to restore to the forward reversing state, the compressor is stopped, and the outer fan is closed. According to the compressor shutdown control method, the balance of the refrigerant pressure difference of the compressor is accelerated, and the compressor can be quickly cooled, so that the temperature is reduced to a proper temperature as far as possible before the compressor is started next time, the pressure is balanced, the influence on next starting is reduced, the time interval of next starting of the compressor is shortened, and the use feeling of a user on the air conditioner is enhanced.

Description

technical field [0001] The present invention relates to the technical field of air conditioners, in particular to a compressor stop control method, a start control method and an air conditioner. Background technique [0002] Air conditioners are indispensable electrical equipment in people's daily life, and have various structural forms. With the continuous improvement of industrial design level and the application of new technology, new materials, new shapes and new technologies in air conditioners, not only various air conditioners have been developed, but also the control methods related to air conditioners have been improved accordingly. . [0003] In the prior art, when the air conditioner operates in a high-temperature and high-load environment, the exhaust temperature of the compressor is often high. At this time, the compressor is in a relatively sealed space with poor heat dissipation, and the temperature of the cylinder body drops slowly. Protection or frequent s...

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Problems solved by technology

[0007] In view of this, the present invention aims to propose a compressor stop control method, a start-up control method, and an air conditioner to solve the problem that in the prior art, after the exhaust protection is triggered, it takes a long time for the compressor to cool down and the compressor is still easy to start again. Issues such as triggering exhaust protection

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