Control system and control method for air-conditioning heating and frosting

Abstract

The invention provides a control system for air-conditioning heating and frosting. The control system comprises an air-conditioning system, wherein the air-conditioning system comprises an outdoor unit heat exchanger (3), an electronic expansion valve (8), a compressor (1) and an outdoor motor (4), and further comprises an outer ring temperature detecting element (6) and an outer tube temperature detecting element arranged on the outdoor unit heat exchanger (3) as well as a controller electrically connected with the elements, wherein the controller (7) outputs a control signal to one or more of the electronic expansion valve (8), the compressor (1) and the outdoor motor (4). According to the control system provided by the invention, frostless control can be carried out on a frosting process of an outdoor unit, so that indoor heating comfort is improved; a frosting period is prolonged, so that defrosting action in a using process of a user is reduced; the process is simple and the cost is reduced; and active defrosting is carried out to overcome the defects of passive defrosting. The invention further relates to a control method for carrying out frosting control by utilizing the system.

Description

technical field [0001] The invention belongs to the technical field of air conditioning, and in particular relates to a control system and method for heating and frosting of an air conditioner. Background technique [0002] At present, when the air conditioning system of the prior art heats the room under low temperature and high humidity conditions in winter, the heat exchanger of the outdoor unit will generally frost, which will cause the air volume of the outdoor unit to decrease and the heat exchange effect to deteriorate, resulting in The indoor side cannot be heated normally. Therefore it needs to be defrosted. [0003] Patent No. CN87105945A The operation control method of the heat pump air conditioner is to defrost through the bypass pipeline, and the purpose of adjusting the frequency is to reduce the oil level loss of the compressor during defrosting, resulting in a complicated process and high cost. [0004] The patent No. 94190846.1 describes the operation and ...

AI Technical Summary

Problems solved by technology

[0007] Therefore, the technical problem to be solved by the present invention is to overcome the defrosting mode of the air conditioning system in the prior art, which can only control the defrosting after frosting, and has no control means for the frosting process, which seriously affects the comfort of indoor heating. defects, thereby providing a control system and control method for air-conditioning, heating and frosting

Images