Defrosting control method for heat pump air conditioner

A technology of heat pump air conditioner and control method, which is applied in the direction of heating mode, heating and ventilation control system, refrigerator, etc., can solve the problem of inaccurate defrosting time of air conditioner, so as to save power consumption, avoid false defrosting, and guarantee The effect of using the effect

Inactive Publication Date: 2009-06-10
HAIER GRP CORP +1
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  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] The object of the present invention is to provide a heat pump air conditioner defrosting control method, which is used to solve the technical problem of inaccurate air conditioner defrosting entry time in the prior art

Method used

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  • Defrosting control method for heat pump air conditioner
  • Defrosting control method for heat pump air conditioner
  • Defrosting control method for heat pump air conditioner

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Embodiment Construction

[0036] The invention provides a defrosting control method for a heat pump air conditioner, which is used to solve the technical problem of inaccurate defrosting entry time of the air conditioner in the prior art.

[0037] Specific embodiments of the present invention will be described below in conjunction with the accompanying drawings.

[0038] see figure 1 and figure 2 , figure 1 It is a flow chart of the heat pump air conditioner defrosting control method according to the present invention; figure 2 It is the heat pump air-conditioning system diagram of the present invention.

[0039] According to the general knowledge of the refrigeration profession, when the outdoor air-cooled heat pump air conditioner is operating at low temperature, the main factors that determine the degree of frosting on the outdoor side are: the outdoor ambient temperature, the humidity content of the outdoor air, the temperature in the middle of the outdoor condenser and the outdoor temperature...

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Abstract

The invention discloses a method for controlling defrosting of a heat pump air-conditioner, comprising the following steps: 1) dividing outdoor environment temperatures into a plurality of stages; 2)setting a plurality of outdoor heat exchanger temperature ranges corresponding to each outdoor environment temperature stage; wherein each temperature range is corresponding to a predetermined cumulative time standard length; 3) calculating the total of the time when the outdoor heat exchanger temperature is within the range of each outdoor heat exchanger temperature; 4) calculating the quotient of the time calculated in step 3) and the corresponding cumulative time standard length set in step 2); 5) calculating the sum of the quotient of the total of the time when the outdoor heat exchanger temperature is within the range of each outdoor heat exchanger temperature calculated in step 3) and the corresponding cumulative time standard length, to obtain accumulated calculation coefficient; and 6)when the accumulated calculation coefficient is more than or equal to 1, starting the defrosting operation. The inventive method for controlling defrosting of the heat pump air-conditioner is used for solving the technical problem that the air-conditioner defrosting starting time is not accurate in prior art.

Description

technical field [0001] The invention relates to a defrosting method for an air conditioner, in particular to a defrosting control method and system for an air-cooled heat pump air conditioning system. Background technique [0002] The outdoor air-cooled heat pump air-conditioning system is easy to frost on the outdoor condenser when heating at low temperature, which makes the heat exchange effect on the outdoor side worse, which leads to the worsening of the indoor heating effect of the system. When the frosting reaches a certain level, the heating effect of the indoor mechanism will become very poor, and even cold wind will be blown. At this time, it is necessary to remove the frost formed on the outdoor condenser to restore the heat exchange effect on the outdoor side and improve the heating effect of the indoor unit. [0003] At present, the air-cooled heat pump air-conditioning system generally switches to cooling mode through the four-way valve reversing to defrost the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F25B47/02F24F11/02
Inventor 国德防毛守博何建奇王海胜赵晓红
Owner HAIER GRP CORP
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