Defrost control method, system, storage medium and processor for air handling unit

Abstract

The invention belongs to the field of air-conditioners and discloses a defrosting control method and system of an air processing unit, a storage medium and a processor. The method includes the steps that after the unit runs, the temperature and the pressure value of an outdoor coil pipe are obtained; when the temperature of the outdoor coil pipe is lower than a first preset temperature and the cumulative time exceeds first preset duration, the outdoor environment temperature is obtained; whether the outdoor environment temperature is higher than or equal to a second preset temperature or not is judged; if yes, the outdoor environment temperature is corrected through a first preset coefficient, and otherwise, the outdoor environment temperature is corrected through a second preset coefficient; the temperature differential value between the corrected outdoor environment temperature and the temperature of the outdoor coil pipe is calculated; and when the temperature differential value islarger than the pressure value, operation enters a defrosting process. The set judgment condition for entering the defrosting process is more suitable for the actual running situation of the unit, thesituation that operation enters the defrosting process too early or too late is avoided, and thus the unit heating efficiency is improved.

Description

technical field [0001] The invention belongs to the technical field of air conditioning, and in particular relates to a defrosting control method, system, storage medium and processor of an air handling unit. Background technique [0002] With the continuous improvement of living standards, more and more household appliances have entered people's lives. Household appliances also encounter various problems during use. For example, when the air conditioner is heating in winter, after the temperature of the outdoor heat exchanger reaches below zero, frost may form, and the thick frost layer will block the air flow , affecting the heating capacity of the air conditioner. In order to ensure the continuous heating of the air conditioning system, it is necessary to defrost the air conditioner. [0003] Existing air conditioners are equipped with a defrosting function, but the judgment of the starting condition of the defrosting process is not accurate enough, so that the air cond...

AI Technical Summary

Problems solved by technology

[0003] The defrosting function is set on the existing air conditioners, but the judgment of the start condition of the defrosting process is not accurate enough, so that the air conditioner enters the defrosting too early or too late

Premature defrosting of the air conditioner will lead to high pressure in the system, frequent defrosting, and waste of heat; too late defrosting of the air conditioner will cause low pressure in the system and low heating efficiency

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