Air conditioner and defrosting control method thereof

Abstract

The invention belongs to the technical field of air conditioners, and aims at solving the problems that when an existing air conditioner conducts defrosting, the optimal defrosting mode cannot be selected according to the outside temperature condition and the thickness of a frost layer on an air conditioner outdoor unit. Accordingly, the invention provides an air conditioner and a defrosting control method thereof. The method comprises the following steps that the outdoor environment temperature and the first preset temperature are compared; if the outdoor environment temperature is larger than or equal to the first preset temperature, the air conditioner is controlled for bypass defrosting; if the outdoor environment temperature is smaller than the first preset temperature, whether the thickness of the frost layer on the air conditioner outdoor unit meets the preset condition or not is judged; if the thickness of the frost layer meets the preset condition, the air conditioner is controlled for bypass defrosting; and if the thickness of the frost layer does not meet the preset condition, the air conditioner is controlled for refrigerating defrosting. By means of the air conditioner and the defrosting control method thereof, the optimal defrosting mode can be adopted under the situation that the outdoor environment temperature is high or low or the frost layer on the air conditioner outdoor unit is relatively thick or thin, the comfort of the indoor environment is guaranteed, and the air conditioner heating effect is improved.

Description

technical field [0001] The invention belongs to the technical field of air conditioners, and in particular relates to an air conditioner and a defrosting control method thereof. Background technique [0002] As a device that can adjust the indoor ambient temperature, the air conditioner works on the principle that the indoor ambient temperature is reduced or increased by the refrigerant passing through the circulation pipeline through high-pressure / low-pressure / gas / liquid state transitions, that is, from From the perspective of the indoor unit, the air conditioner is in cooling or heating mode. Under heating conditions, the outer coil of the outdoor unit (evaporator) of the air conditioner is prone to frost, and the frost on the outer coil will lead to a decline in the performance of the refrigeration system, thereby affecting the heating effect of the air conditioner and reducing the indoor temperature. The comfort of the environment affects the user experience. Therefore...

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Problems solved by technology

[0005] In order to solve the above problems in the prior art, that is, in order to solve the problem that the existing air conditioner cannot select the optimal defrosting mode according to the external temperature conditions and the thickness of the frost layer on the outdoor unit of the air conditioner when defrosting, the present invention provides a A defrosting control method for an air conditioner, the defrosting control method includes the following steps: when the air conditioner meets the defrosting conditions, comparing the outdoor ambient temperature with a first preset temperature; if th

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