Air conditioner system with frosting delay function and control method thereof

Abstract

The invention discloses an air conditioner system with the frosting delay function and a control method thereof. The outer pipe wall of a heat exchange pipeline located on the lowest portion in an outdoor heat exchanger is subjected to temperature detection to judge the frosting condition of the outdoor heat exchanger, through increasing the opening degree of an enthalpy increasing expansion valve, the flow of liquid-state refrigerants on a refrigerant circular loop can be reduced, an outlet of the outdoor heat exchanger after the refrigerant flow is reduced easily achieves overheat state, thesurface temperature of the outdoor heat exchanger can be improved, the frosting time of the outdoor heat exchanger is effectively delayed, through control over the opening of a flow electromagnetic valve, the refrigerant flow in the heat exchange pipeline on the lowest portion in the outdoor heat exchanger can be increased, the overheat degree of the refrigerant in the heat exchange pipeline canbe increased, the frosting time of the outdoor heat exchanger can be effectively delayed, the heating time of the air conditioner system is effectively prolonged, the heating capacity and the heatingeffect are improved, and the use experience of a user is greatly improved.

Description

technical field [0001] The invention relates to the technical field of air-conditioning systems, in particular to an air-conditioning system with the function of delaying frosting and a control method thereof. Background technique [0002] As we all know, under normal working conditions (outdoor dry bulb temperature 7°C / wet bulb temperature 6°C), the normal continuous non-frost running time of the common multi-split air conditioning system is generally 30 minutes, and then it will enter the defrosting reverse cycle operation , which not only seriously affects the heating effect and the user's thermal sensation, but also greatly reduces the improvement of the heating capacity of the entire unit. Contents of the invention [0003] Aiming at the deficiencies of the prior art, the object of the present invention is to provide an air conditioning system with high practicability, which can significantly improve the heating effect and has the function of delaying frosting and its...

AI Technical Summary

Problems solved by technology

[0002] As we all know, under normal working conditions (outdoor dry bulb temperature 7°C / wet bulb temperature 6°C), the normal continuous non-frost running time of the common multi-split air conditioning system is generally 30 minutes, and then it will enter the defrosting reverse cycle operation , which not only seriously affects the heating effect and the user's thermal sensation, but also greatly reduces the improvement of the heating capacity of the entire unit

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