Air conditioner and control method thereof

Abstract

The invention discloses an air conditioner and a control method thereof. The air conditioner comprises a control component, an indoor unit on an indoor side and an outdoor unit on an outdoor side, wherein the indoor unit and the outdoor unit are connected through a pipeline to form a circular loop; a leakage detector for detecting the concentration of a combustible refrigerant is arranged near an electric control box of the indoor unit or near an air outlet; the air conditioner also comprises an air exchange device; the air exchange device comprises an air exchange fan with an air exchange motor; an air inlet of the air exchange device is provided with a filter screen and an insect-proof net; and an air outlet of the air exchange device is provided with a baffle which is opened with the rotation of the air exchange motor and closed with the stop of the air exchange motor. According to the invention, as the leakage detector and the air exchange device are added, after the indoor unit of the air conditioner is power-on and the refrigerant leaks during the operation, the concentration of the combustible refrigerant of unit volume in the house can be reduced through air exchange; and the air conditioner has the characteristics of simple and reasonable structure, safety, reliability and wide application range, and is flexible to operate and low in manufacturing cost.

Description

technical field [0001] The invention relates to an air conditioner, in particular to an air conditioner and a control method thereof. Background technique [0002] Refrigerant R22 has damage to the ozone layer. In terms of R22 replacement, the current main alternative refrigerant is R410A. The ODP of the refrigerant R410A is zero, but the GWP is high. As the international community pays more and more attention to the greenhouse effect, it is necessary to find refrigerants with zero ODP and small GWP, and refrigerants that meet this requirement include R290, R32, etc. However, these refrigerants R290 and R32 are flammable. Under a certain concentration, these flammable refrigerants will burn when encountering an ignition source with a certain energy, and there may even be a risk of explosion in a closed room. Therefore, when the air conditioner leaks the flammable refrigerant indoors, it is necessary to discharge the flammable refrigerant from the room or reduce the concent...

AI Technical Summary

Problems solved by technology

However, these refrigerants R290 and R32 are flammable. At a certain concentration, these flammable refrigerants will burn when encountering an ignition source with a certain energy, and there may even be a risk of explosion in a closed room.

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