Defrosting control method and system of heat pump air-conditioning unit

A heat pump air conditioner and control method technology, which is applied to heating and ventilation control systems, heating methods, heating and ventilation safety systems, etc. Frequency, increase heat supply and use comfort, achieve the effect of continuity

Inactive Publication Date: 2014-12-03
GREE ELECTRIC APPLIANCES INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Aiming at the problems of discontinuous heating capacity and low defrosting efficiency of air-conditioning units in traditional defrosting control methods, the present invention provides a defrosting control method and system for heat pump air-conditioning units that can improve user heat supply and defrosting efficiency

Method used

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  • Defrosting control method and system of heat pump air-conditioning unit
  • Defrosting control method and system of heat pump air-conditioning unit
  • Defrosting control method and system of heat pump air-conditioning unit

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Embodiment approach

[0047] As an implementable mode, the following steps are also included:

[0048] S200', if there is no piping system meeting the defrosting condition, all piping systems will maintain the original operating mode.

[0049] If there is no piping system that meets the defrosting conditions, all piping systems will maintain the original operating mode, such as continuing to heat the user, to ensure a steady stream of heat for the user and improve heating efficiency.

[0050] As an implementable mode, the following steps are also included:

[0051] S400', if the percentage of the number of piping systems meeting the defrosting conditions to the total piping system is less than or equal to the preset percentage, the piping systems meeting the defrosting conditions enter the defrosting mode, and the other piping systems enter the defrosting mode. heating mode.

[0052] If the percentage of the number of piping systems that meet the defrosting conditions to the total piping system i...

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Abstract

The invention provides a defrosting control method and system of a heat pump air-conditioning unit. The defrosting control method is used for defrosting multiple pipeline systems of the air-conditioning unit and comprises the following steps: whether pipeline systems meeting defrosting requirements exist is detected, if yes, the quantity of the pipeline systems meeting the defrosting requirements is detected; whether the percentage of the quantity of the pipeline systems meeting the defrosting requirements in the total quantity of the pipeline systems is larger than a preset percentage or not is determined; if yes, the pipeline systems meeting the defrosting requirements are sorted according to total run time of corresponding compressors; and a preset quantity of pipeline systems in the pipeline systems meeting the defrosting requirements are in a defrosting mode, and other pipeline systems are in a heating mode. According to the defrosting control method and system, in the defrosting process, part of the pipeline systems defrost, the other pipeline systems perform heating, so that heating continuity for users is guaranteed, the use comfort of the users is improved, the heating pipeline systems provide heat for the defrosting pipeline systems, and the defrosting efficiency is increased.

Description

technical field [0001] The invention relates to the technical field of defrosting of an air-conditioning unit, in particular to a defrosting control method and system for a heat pump air-conditioning unit. Background technique [0002] When the heat pump air conditioner unit is running for heating in winter, the outdoor finned heat exchanger will frost and affect the heat transfer. In order to increase the heat transfer capacity, the outdoor finned heat exchanger will be defrosted; There are defrosting methods using hot gas bypass and defrosting methods using four-way reversing valve reversing to guide refrigerant reversing. The defrosting method using four-way reversing valve reversing to guide refrigerant reversing includes two defrosting methods Frost mode: one is that when any pipeline system of the air conditioning unit meets the defrosting conditions, all the pipeline systems enter the defrosting mode at the same time, and the other is that the pipeline system in the a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F25B47/02F24F11/00
Inventor 刘刚峰陈培生程琦钟海玲黄凯亮徐萃端陈锡保
Owner GREE ELECTRIC APPLIANCES INC
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