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Defrosting control method for air-conditioning system

An air-conditioning system and control method technology, applied in heating and ventilation control systems, heating and ventilation safety systems, heating methods, etc., can solve problems such as frequent mis-defrosting, extra energy loss, and reducing the heating effect of the air-conditioning system, to achieve Avoid false defrosting, improve adaptability, and improve the effect of heating effect

Active Publication Date: 2012-08-22
HISENSE (SHANDONG) AIR CONDITIONING CO LTD
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Problems solved by technology

However, due to the changeable weather conditions of this design method, frequent mis-defrosting will also occur in dry weather, which not only produces a large amount of additional energy loss, but also reduces the heating effect of the air conditioning system

Method used

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  • Defrosting control method for air-conditioning system
  • Defrosting control method for air-conditioning system
  • Defrosting control method for air-conditioning system

Examples

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Embodiment 1

[0043] Embodiment 1. The defrosting control method of this embodiment first defines three defrosting operation modes under humidity conditions, namely: dry mode, normal mode, and high humidity mode. Then, formulate different defrosting entry conditions for the three defrosting operating modes according to the degree of difficulty of frosting, that is, follow the order of the defrosting entry conditions from easy to satisfy to difficult to satisfy in turn for the high-humidity mode and normal mode. The reason is that when the ambient humidity of the outdoor unit of the air conditioner is high, the heat exchanger in the outdoor unit is prone to frosting. , its entry condition should be easier to meet than the other two modes, that is, the defrosting cycle is relatively short. If the ambient humidity of the outdoor unit of the air conditioner is moderate, the heat exchanger in the outdoor unit is prone to frosting during the heating operation of the air conditioning system. The ...

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Abstract

The invention discloses a defrosting control method for an air-conditioning system, which comprises the following steps of: defining three defrosting running modes, namely a drying mode, a general mode and a high-humidity mode; formulating different defrosting entry conditions on the three modes sequentially according to the complexity of frosting; and when the air-conditioning system is energized and operates, executing the following defrosting control processes: a, when an air-conditioning outdoor unit electrifies and enters a heating running mode for the first time, setting the high-humidity mode as the defrosting running mode; b judging whether the air-conditioning system meets the defrosting entry conditions or not, if so, executing the subsequent process, and otherwise, repeating the current judging process; c, executing the defrosting operation; and d, after the defrosting is finished, determining what kind of the defrosting running mode to be executed next time according to the current defrosting time, and returning the process b. By the defrosting control strategy, the problems of defrosting error and incomplete defrosting in high-humidity areas can be saved, the energy is saved, and the heating effect is improved.

Description

technical field [0001] The invention belongs to the technical field of air-conditioning systems, and in particular relates to a defrosting control method for an air-conditioning system. Background technique [0002] In the existing air conditioning system, the defrosting control generally adopts the comparison between the outdoor ambient temperature and the outdoor heat exchanger temperature, or the comparison between the outdoor ambient temperature and the indoor heat exchanger temperature, or by judging the change rate of the indoor coil temperature. and other methods to determine whether defrosting is required. The characteristics of this traditional defrosting control method are: the defrosting entry time is fixed, and it does not distinguish between areas with high humidity or low humidity. The air conditioner using this defrosting method is very easy to defrost by mistake in a dry area, wasting energy and reducing the heating effect; and in a high-humidity area, there...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F24F11/00
Inventor 刘金涛赵宇开
Owner HISENSE (SHANDONG) AIR CONDITIONING CO LTD
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