Defrosting control method for air conditioner and air conditioner

Abstract

The invention relates to a defrosting control method for an air conditioner and the air conditioner. When the air conditioner operates in a heating mode, the defrosting control method comprises the steps that the outdoor environment temperature Tao, the outdoor environment humidity Tae, the fin temperature Ta of an outdoor heat exchanger of the air conditioner and the defrosting temperature Te are detected; the dew point temperature Tz is determined based on the outdoor environment temperature Tao and the outdoor environment humidity Ti; the heating operation duration of the air conditioner is obtained; when the following conditions are met, the air conditioner is controlled to be in a defrosting mode, wherein the outdoor environment temperature Tao is smaller than or equal to a first preset environment temperature threshold value; the heating operation duration is larger than or equal to a preset heating duration; the dew point temperature Tz is smaller than or equal to the fin temperature Ta; and the defrosting temperature Te and the outdoor environment temperature Tao satisfy a preset temperature relation. In the defrosting judgment process, only when the conditions of the four different factors influencing defrosting are met at the same time, the air conditioner is controlled to be in the defrosting mode, the false defrosting phenomenon can be avoided to the maximum extent, and then the experience of a user on the air conditioner is improved.

Description

technical field [0001] The invention relates to the field of air conditioners, in particular to a defrosting control method for the air conditioner and the air conditioner. Background technique [0002] Air conditioners, including but not limited to one-to-many central air conditioners and fresh air fans, are very common in modern society, and are used to adjust the indoor temperature to make the indoor temperature more in line with people's physical comfort. The basic components of an air conditioner with a heating function generally include a compressor, an outdoor heat exchanger, an indoor heat exchanger, a four-way valve, and a throttle valve. When the air conditioner is heating, the compressor operates to compress the refrigerant into a high-temperature, high-pressure gas refrigerant; the high-temperature, high-pressure gas refrigerant then dissipates heat to the room through the indoor heat exchanger (which acts as a condenser at this time) to heat the room Air, while...

AI Technical Summary

Problems solved by technology

[0005] In order to solve the above-mentioned problems in the prior art, that is, in order to solve the technical problem that the false defrosting cannot be accurately eliminated in the prior art, the present invention provides a defrosting control method for an air conditioner, when the air conditioner is in the heating mode When running under, the defrosting control method includes:

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