Method for suppressing frosting of heat pump unit and heat pump unit

A heat pump unit and frosting technology, which is applied in the direction of refrigerators, refrigeration components, refrigeration and liquefaction, etc., can solve the problems of reducing the heating capacity of the heat pump unit and the attenuation of the heating capacity of the heat pump unit, so as to avoid frosting and defrosting, The effect of reducing the impact and reducing the degree of attenuation

Active Publication Date: 2017-05-24
GREE ELECTRIC APPLIANCES INC
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although these methods can defrost well and ensure that the heat pump unit can work for a long time, during the defrosting process, the above defrosting methods will reduce the heating capacity of the heat pump unit, resulting in attenuation of the heating capacity of the heat pump unit

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  • Method for suppressing frosting of heat pump unit and heat pump unit

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Embodiment Construction

[0032]The embodiment of the present invention provides a method for suppressing the frosting of the heat pump unit, which reduces the influence on the heating capacity of the heat pump unit, and further reduces the attenuation degree of the heating capacity of the heat pump unit.

[0033] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0034] The method for suppressing frosting of a heat pump unit provided in an embodiment of the present invention specifically includes the steps of:

[0035] S01: Whe...

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Abstract

The invention provides a heat pump unit frosting restraining method and a heat pump unit. The heat pump unit frosting restraining method includes steps: 1) when the heat pump unit runs in a heating mode, detecting outdoor environment temperature and humidity and temperature T2 of a fin of a heat exchange tube in an outdoor heat exchanger of the heat pump unit; 2) obtaining dew point temperature T1 corresponding to the outdoor environment temperature and humidity, and if T1>0 degree centigrade and T2 <=0 degree centigrade, or if T1<=0 degree centigrade and T2<=T1, heating refrigerant which is throttled and flowing into the outdoor heat exchanger. According to the heat pump unit frosting restraining method, the refrigerant which is throttled and flowing into the outdoor heat exchanger is heated according to a magnitude relationship among the dew point temperature T1 corresponding to the outdoor environment temperature and humidity, the temperature T2 of the fin of the heat exchange tube and 0 degree centigrade, frosting of the outdoor heat exchanger is restrained, the frosting and defrosting are avoided, influences on heating capacity of the heat pump unit are effectively reduced, and then the attenuation degree of the heating capacity of the heat pump unit is reduced.

Description

technical field [0001] The invention relates to the technical field of air source heat pumps, and more specifically, to a method for suppressing frosting of a heat pump unit and a heat pump unit. Background technique [0002] With the development of heat pump technology, heat pump units are gradually being widely used, such as air source heat pumps, heat pump air conditioners, etc. [0003] At present, when the heat pump unit is heating, frosting often occurs. When the outdoor heat exchanger is frosted, the heating capacity of the entire heat pump unit will be reduced, so regular defrosting is required. Defrost methods usually include four-way valve reversing hot gas defrosting, hot gas bypass defrosting, heat storage defrosting, etc. Although these methods can defrost well and ensure that the heat pump unit can work for a long time, during the defrosting process, the above defrosting methods will reduce the heating capacity of the heat pump unit, resulting in attenuation o...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F25B47/02F25B49/02
CPCF25B47/02F25B49/02F25B2347/023
Inventor 胡锐李鹏飞禤祺杨玉生
Owner GREE ELECTRIC APPLIANCES INC
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