Air-cooling chilled and hot water air conditioning unit, and defrosting control method and device therefor

An air-conditioning unit, cooling technology, applied in heating and ventilation control systems, refrigerators, heating methods, etc., can solve problems such as false defrosting easily, and achieve the effect of avoiding false defrosting and improving operation reliability.

Active Publication Date: 2013-10-23
GREE ELECTRIC APPLIANCES INC
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  • Abstract
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  • Claims
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AI Technical Summary

Problems solved by technology

[0010] The main purpose of the present invention is to provide an air-cooled cold and hot water air conditioner unit and its defrosting

Method used

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  • Air-cooling chilled and hot water air conditioning unit, and defrosting control method and device therefor
  • Air-cooling chilled and hot water air conditioning unit, and defrosting control method and device therefor
  • Air-cooling chilled and hot water air conditioning unit, and defrosting control method and device therefor

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Embodiment Construction

[0031] It should be noted that, in the case of no conflict, the embodiments in the present application and the features in the embodiments can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and examples.

[0032] figure 1 It is a schematic diagram of the defrosting control method of the air-cooled cold and hot water air conditioning unit according to the embodiment of the present invention, as figure 1 As shown, the method mainly includes the following steps:

[0033] Step S11: Detect the defrosting detection data of the air-cooled cold and hot water air-conditioning unit during heating operation;

[0034] Step S13: judging whether the defrosting detection data meets all preset defrosting conditions;

[0035] Step S15: When the defrosting detection data during the heating operation meets all the preset defrosting conditions, the control unit enters the defrosting mode.

[0036] Among them, th...

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Abstract

The invention provides an air-cooling chilled and hot water air conditioning unit, and a defrosting control method and device therefor and aims to solve the problem that mistaken defrosting easily occurs to the prior defrosting control method. The control method includes: detecting defrosting detection data of the air-cooling chilled and hot water air conditioning unit during heating; judging whether the defrosting detection data meet all preset defrosting conditions or not; allowing a control unit to enter a defrosting mode when the defrosting detection data during heating meets all preset defrosting conditions. According to the control method described in the technical scheme, series of defrosting detection data such as compressor, air pressure and outgoing water temperature when the air-cooling chilled and hot water air conditioning unit heats are detected; the preset defrosting conditions are reasonably set; when the defrosting detection data meets the preset defrosting conditions, the control unit enters the defrosting mode; accordingly, mistaken defrosting is avoided and operational reliability of the air conditioning unit during defrosting can be improved.

Description

technical field [0001] The invention relates to the field of air conditioners, in particular to an air-cooled hot and cold water air conditioner unit and a defrosting control method and device thereof. Background technique [0002] When the air-cooled hot water air conditioning unit is in heating operation in winter, due to the frost on the surface of the evaporator, the heat transfer resistance between the surface of the evaporator and the air is increased, and the flow resistance of the air flow through the evaporator is increased, so that the air passing through the evaporator The decrease of the air flow rate will lead to the decrease of the heat transfer of the air to the evaporator, the deterioration of the working condition of the air-cooled hot water air conditioning unit, and even cause the unit to have low pressure protection, compressor overcurrent protection, fan overcurrent protection, compressor oil level If the protection action is too low, in serious cases, i...

Claims

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Application Information

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IPC IPC(8): F24F11/00F25B47/02
Inventor 程琦
Owner GREE ELECTRIC APPLIANCES INC
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