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Heat pump system and defrosting control method thereof

A technology of a heat pump system and a control method, which is applied to heating methods, air conditioning systems, heating and ventilation control systems, etc., can solve the problems of blockage of heat exchange channels, poor comfort, poor heating effect, etc., to reduce energy waste, The effect of improving comfort and reducing the range of temperature changes

Inactive Publication Date: 2017-05-31
GD MIDEA AIR-CONDITIONING EQUIP CO LTD +1
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When the temperature drops to a certain level, frost will start to form on the fins, and it may even freeze, which will block the heat exchange channel, resulting in poor heating effect or even no heating, especially when the microchannel parallel flow heat exchanger is used as the outdoor evaporator , due to the poor drainage effect and large pressure drop, the frosting speed will be faster, the defrosting time will be longer, and the comfort will be worse, which restricts the application of parallel flow heat exchangers

Method used

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  • Heat pump system and defrosting control method thereof
  • Heat pump system and defrosting control method thereof
  • Heat pump system and defrosting control method thereof

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Embodiment Construction

[0040] Embodiments of the present invention are described in detail below, examples of which are shown in the drawings, wherein the same or similar reference numerals designate the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the figures are exemplary and are intended to explain the present invention and should not be construed as limiting the present invention.

[0041] Refer below Figure 1-Figure 4 A heat pump system 100 according to an embodiment of the present invention is described. The heat pump system 100 can be applied in an air conditioner, and the heat pump system 100 is the heat pump system 100 of an air conditioner.

[0042] According to the heat pump system 100 of the embodiment of the present invention, such as figure 1 As shown, it includes: a compressor 1 , a four-way valve 2 , an outdoor heat exchanger 8 , an indoor heat exchanger 3 , a throttling element 5 , an indoor f...

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Abstract

The invention discloses a heat pump system and a defrosting control method of the heat pump system. The heat pump system comprises a compressor, a four-way valve, an outdoor heat exchanger, an indoor heat exchanger and a heating device. The outdoor heat exchanger is a microchannel heat exchanger. When the system conducts defrosting, at least one flat pipe in the microchannel heat exchanger can be heated through the heating device. According to the heat pump system, defrosting is uniform, the defrosting efficiency can be improved, the system still can heat a room in the defrosting process, the indoor side temperature change range in the defrosting process is lowered, and the system comfort and defrosting efficiency are improved.

Description

technical field [0001] The invention relates to a heat pump system, in particular to a heat pump system and a defrosting control method thereof. Background technique [0002] When the air conditioner is heating, the indoor temperature is high and the outdoor temperature is low. As the temperature of the outdoor evaporator drops, condensation will appear on the fins. When the temperature drops to a certain level, frost will start to form on the fins, and it may even freeze, which will block the heat exchange channel, resulting in poor heating effect or even no heating, especially when the microchannel parallel flow heat exchanger is used as the outdoor evaporator , due to the poor drainage effect and large pressure drop, the frosting speed will be faster, the defrosting time will be longer, and the comfort will be worse, which restricts the application of parallel flow heat exchangers. Therefore, how to defrost better and avoid affecting indoor comfort has become a technica...

Claims

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Application Information

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IPC IPC(8): F25B13/00F25B47/02F25B49/02F24F1/16F24F11/00
CPCF25B13/00F24F1/16F24F11/30F24F11/42F25B47/02F25B49/02F25B2347/02
Inventor 徐龙贵汪先送田俊程超
Owner GD MIDEA AIR-CONDITIONING EQUIP CO LTD
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