Air-conditioner defrosting method

Abstract

The invention discloses a method for air conditioner defrosting, which comprises the following steps, namely magnetic valves are provisionally arranged on an outlet of a condensator and a pipe line between a four-way change-over valve and a gas side cutoff valve, the temperature of a coil pipe of the condensator and the temperature of outdoor environment are detected, a defrost operation is judged to be operated or not according to the temperature of the coil pipe of the condensator and the outdoor environment, when in defrosting operation, an indoor draught fan is controlled to operate in a lower speed, and an outdoor draught fan is stopped operating, the magnetic valve is energized to open, the compressor is controlled to operate according to a required frequency of an indoor set, and then the temperature of the condensator is judged to detect whether the temperature is satisfied for the condition of defrosting withdrawal. The magnetic valve is closed after defrosting is existed, and the outdoor draught fun is controlled to start and operate in high speed, and the indoor draught fan is controlled to recover to a normal operation. The invention provides a method for air conditioner defrosting, which solves the problem that a current air condition needs to be transferred to a refrigerating condition in the process of defrosting, and refrigerating effect of the air conditioner is not good.

Description

technical field [0001] The invention relates to a method for defrosting an air conditioner. Background technique [0002] When the air conditioner performs low-temperature heating in winter, the condenser will generate frost, which will affect the heating effect of the air conditioner. When using shutdown refrigeration to melt the frost on the condenser, it will affect the corresponding indoor temperature. This defrosting method cannot meet the user's heating requirements in winter. [0003] At present, the defrosting method adopted by most air conditioners is to switch the four-way valve to the cooling operation state after shutting down, and at the same time, the indoor and outdoor fans stop running. [0004] First, detect the temperature of the outdoor sensor or indoor sensor through heating operation for a certain period of time to determine whether the condenser needs to be defrosted. When the condenser needs to be defrosted, the four-way valve is controlled to chang...

AI Technical Summary

Problems solved by technology

[0007] The purpose of the present invention is to provide a method for defrosting an air conditioner, which is used to solve the technical problem in the prior art that the temperature of the corresponding room is reduced during the defrosting process of the air conditioner, which affects the heating effect of the air conditioner

Images