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Air source heat pump defrosting control method

An air-source heat pump and control method technology, applied in the field of air-conditioning heat pump, can solve the problems of non-defrosting, false defrosting, energy waste, etc., and achieve a reliable defrosting effect

Inactive Publication Date: 2019-09-27
GUIZHOU UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] However, most of the current defrosting methods have some problems, specifically, there are false defrosting phenomena of "no frost defrosting" and "no frost defrosting", resulting in waste of energy

Method used

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  • Air source heat pump defrosting control method
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  • Air source heat pump defrosting control method

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Embodiment Construction

[0019] The present invention will be further described below in conjunction with the examples, but it is not used as the basis for limiting the present invention. For structures or processes not particularly indicated, they are conventional prior art in this field.

[0020] Example. A method for controlling defrosting of an air source heat pump. The air source heat pump includes: a compressor, an indoor heat exchanger, a capillary tube, an outdoor heat exchanger, and the like. The method adopts the defrosting control device of the air source heat pump defrosting control method, and the device includes a central processing module connected to a temperature collection module, a humidity collection module and an air volume collection module. The central processing module is arranged inside the indoor unit of the air conditioner to process data information during the defrosting process of the air conditioner; the temperature acquisition module is used to obtain the air inlet tempe...

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Abstract

The invention discloses an air source heat pump defrosting control method. The method comprises the steps of acquiring the outdoor heat exchange inlet air temperature T<in> and outlet air temperature T<out> of an air source heat pump, coil tube temperature T<tube> and the inlet air moisture content omega<in>, outlet air moisture content omega<out> and inlet air mass flow M of an outdoor heat exchanger in the heating mode of the air source heat pump; then, calculating the frost quantity; and judging whether the air source heat pump maintains the heating mode or enters the defrosting mode according to the surface temperature and the frost quantity; in the formula for calculating the frost quantity, M<fr> is the frost quantity, and the omega<in> is the inlet air moisture content; the omega<out> is the outlet air moisture content, and the M is the inlet air mass flow; and the t is the frosting time of the heat exchanger. The air source heat pump defrosting control method has the advantages that the defrosting is reliable, and the phenomenon of false defrosting does not occur; and the energy waste is not caused.

Description

technical field [0001] The invention relates to the technical field of air-conditioning heat pumps, in particular to an air source heat pump defrosting control method. Background technique [0002] The air source heat pump system obtains a low-temperature heat source through air heat storage, and becomes a high-temperature heat source after efficient heat collection and integration of the system, which is used for heating or hot water supply. The unit does not need a cooling water system, and there is no environmental pollution caused by the use of boilers. It is easy to install, high in heat collection efficiency, low in operating cost, and safe in operation. At present, air source heat pumps are mostly used for heating in winter in the Yangtze River Basin and areas south of my country. [0003] When the air source heat pump is operated in an area with low temperature and high humidity, when the surface temperature of the outdoor heat exchanger is lower than the dew point te...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F25B49/02F25B30/02F24F11/41F24F11/64F24F110/10
CPCF24F11/41F24F11/64F24F2110/10F25B30/02F25B49/02
Inventor 田茂军毛瑞勇杨雅鑫胡澄
Owner GUIZHOU UNIV
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