Self-adaptive defrosting control method of air-cooled heat pump system

An air-cooled heat pump and control method technology, which is applied in defrosting, application, refrigerator and other directions, can solve the problems of no defrosting without frost, no defrosting with frost thickness, and reduction in condensation temperature, and achieve stable and smooth operation of defrosting control. , The defrosting control operation is more, and the effect of reliable operation is guaranteed.
CN110736277AInactive Publication Date: 2020-01-31WUXI VOCATIONAL & TECHN COLLEGE
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Patent Information

Authority / Receiving Office
CN Β· China
Current Assignee / Owner
WUXI VOCATIONAL & TECHN COLLEGE
Publication Date
2020-01-31
Estimated Expiration
Not applicable Β· inactive patent

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Abstract

The invention discloses a self-adaptive defrosting control method of an air-cooled heat pump system. The self-adaptive defrosting control method is characterized by comprising the following steps of:setting four control parameters: (1) setting a defrosting time set value; (2) setting a temperature difference value entering a defrosting cycle; (3) setting a fin temperature exiting the defrosting cycle; and (4) setting an interval time (defrosting cycle) of two defrosting cycles, comparing actual defrosting time with set defrosting time, recording a ratio of the actual defrosting time to the set defrosting time each time, setting an interval according to a ratio range, determining a defrosting interval time according to an interval range to which the defrosting interval time belongs, takingtwo times of defrosting time as a correction interval, adjusting the set value of the defrosting interval time according to two defrosting time intervals recorded by the current times and the previous times, and continuously correcting the defrosting cycle to enable the defrosting cycle to automatically adapt to the change of the temperature and humidity of the environment with a self-correctionvariable step length.
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Description

technical field

[0001] The invention relates to the technical field of defrosting control methods, in particular to an adaptive defrosting control method for an air-cooled heat pump system. Background technique

[0002] When the system is cooling or heating, frosting may occur. If defrosting is not timely after frosting, it will affect the use of the refrigeration system or heating system.

[0003] Refrigeration and frosting are generally located on the evaporator of the indoor unit. When cooling, the outdoor unit dissipates heat and the indoor unit absorbs heat. The purpose of the evaporator is to absorb heat (cool down), and absorbing heat requires air circulation, which is carried away by air conduction. Heat, when the air flow is insufficient, the evaporator will frost, and the reason for insufficient air is often that the filter screen is not cleaned or the cooling fins of the evaporator are not cleaned, which hinders the air flow.

[0004] Heating frost is usually loc...

Claims

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