Heat pump system and defrosting control method thereof

A technology of heat pump system and control method, which is applied in the direction of heating mode, air conditioning system, heating and ventilation control system, etc. It can solve the problems of heat exchange channel blockage, long defrosting time, and poor heating effect, so as to reduce energy waste, The effect of avoiding refrigerant impact noise and reducing the range of temperature changes

Inactive Publication Date: 2017-04-05
GD MIDEA AIR-CONDITIONING EQUIP CO LTD +1
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  • Abstract
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  • 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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[0039]The following describes in detail the embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein the same or similar reference numerals refer to the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary, and are intended to explain the present invention and should not be construed as limiting the present invention.

[0040] Reference below Figure 1-Figure 4 The heat pump system 100 according to the embodiment of the present invention is described. The heat pump system 100 can be applied to an air conditioner, and the heat pump system 100 is a heat pump system 100 of an air conditioner.

[0041] The heat pump system 100 according to 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...

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Abstract

The invention discloses a heat pump system and a defrosting control method thereof. 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 micro-channel heat exchanger; and during system defrosting, the heating device can heat at least one header pipe of the micro-channel heat exchanger. According to the heat pump system, defrosting is even, the defrosting efficiency can be improved, the system can still heat the indoor space in the defrosting process, the temperature variation amplitude of the indoor side in the defrosting process is reduced, and the system comfort and the 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 temperature on the indoor side is high and the temperature on the outdoor side is low. Condensation occurs on the fins due to a drop in the temperature of the outdoor side evaporator. When the temperature drops to a certain level, the fins begin to form frost, or even ice, which will block the heat exchange channel, resulting in poor heating effect or even no heating, especially when the micro-channel parallel flow heat exchanger is used as an outdoor evaporator , Due to the poor drainage effect and large pressure drop, the frosting speed will be faster, the defrosting time will be long, and the comfort will be worse, which restricts the application of parallel flow heat exchangers. Therefore, how to better defrost and avoid affecting indoor comfort has become ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F24F1/16F24F11/00F25B13/00F25B47/02F25B49/02
CPCF24F1/16F24F11/30F24F11/42F25B13/00F25B47/02F25B49/02F25B2347/02
Inventor 徐龙贵田俊汪先送程超
Owner GD MIDEA AIR-CONDITIONING EQUIP CO LTD
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