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Air-conditioner equipment and anti-frosting method and anti-frosting device for air-conditioner equipment

A technology for air-conditioning equipment and anti-frost, which is applied in lighting and heating equipment, space heating and ventilation, heating methods, etc. The effect of judgment accuracy

Active Publication Date: 2014-02-19
GD MIDEA AIR-CONDITIONING EQUIP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Specifically, for example, by switching the four-way valve, the indoor heat is used to heat the heat exchanger of the outdoor unit, causing the defrosting process to have a great impact on indoor comfort.

Method used

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  • Air-conditioner equipment and anti-frosting method and anti-frosting device for air-conditioner equipment

Examples

Experimental program
Comparison scheme
Effect test

Embodiment approach 1

[0090] The judging unit 104 judges that there is a risk of frosting when the evaporating temperature satisfies a first condition; wherein the first condition includes: being less than or equal to an early warning temperature, wherein the early warning temperature is equal to the dew point temperature or a ratio The dew point temperature is higher than a preset temperature difference.

[0091] Since when the evaporation temperature is lower than the dew point temperature, the moisture in the air will form condensation on the surface of the outdoor unit heat exchanger, so according to the anti-frost method of the embodiment of the present invention, the evaporation temperature should be raised to be higher than the dew point temperature, so as to Eliminates the risk of frost formation. Specifically, it includes two specific situations:

[0092] In one case, the evaporation temperature and dew point temperature can be directly judged, so that when the evaporation temperature is ...

Embodiment approach 2

[0095] The judging unit 104 judges that there is a risk of frosting when the evaporating temperature satisfies the first condition and the second condition at the same time; wherein, the first condition is the condition described in Embodiment 1 above, and the second condition includes : The temperature is less than or equal to the freezing point.

[0096] According to the anti-frost device 100 of the present invention, "frost risk" refers to the occurrence of frost that may occur, but if the external environment temperature is high, only condensation may be generated at present, and no frost layer will be formed temporarily . Therefore, by further comparing the evaporation temperature, it can be determined whether there is a risk of frost formation at present. If the evaporation temperature is lower than the freezing point temperature, it is determined that there is a risk of frost formation, making the judgment result more valuable for the current time period. In this embod...

Embodiment 1

[0140] Figure 6 A schematic flowchart of a method for preventing frosting of an air conditioner according to an embodiment of the present invention is shown.

[0141] Such as Figure 6 As shown, the anti-frost method of the air conditioner according to an embodiment of the present invention comprises:

[0142] Step 602, obtain the evaporation temperature of the outdoor heat exchanger of the air conditioner and the outdoor dew point temperature; step 604, judge whether there is a risk of frosting according to the evaporation temperature and the dew point temperature; step 606, if it is determined that there is condensation If there is no risk of frost, the risk of frost is eliminated by reducing the heat exchange capacity of the outdoor unit heat exchanger.

[0143] According to the anti-frost method of the embodiment of the present invention, the frosting phenomenon of the heat exchanger of the outdoor unit first needs to form condensation on the surface of the heat exchang...

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PUM

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Abstract

The invention provides an anti-frosting method for air-conditioner equipment. The anti-frosting method includes acquiring evaporation temperature of an outdoor unit heat exchanger of the air-conditioner equipment and outdoor dew-point temperature, judging whether frosting risk exists or not according to the evaporation temperature and the dew-point temperature, and if yes, then reducing heat exchange quantity of the outdoor unit heat exchanger so as to eliminate the frosting risk. The invention further provides the air-conditioner equipment and an anti-frosting device for the air-conditioner equipment. According to the technical scheme, the frosting risk of the outdoor unit heat exchanger of the air-conditioner equipment can be found and eliminated in time, so that frosting is prevented, inconvenience brought to users during the defrosting process, and users' experiences can be improved.

Description

technical field [0001] The present invention relates to the technical field of air-conditioning equipment, in particular to an anti-frost method and anti-frost device for air-conditioning equipment, and an air-conditioning equipment. Background technique [0002] For air conditioners equipped with outdoor units, during low-temperature heating operation, condensation will often occur on the heat exchanger of the outdoor unit, and if the ambient temperature is low, it may further cause condensation and frost , Seriously affect the performance of the outdoor unit heat exchanger. [0003] In the related art, the air conditioner removes the frost layer through a defrosting operation after frosting occurs on the heat exchanger of the outdoor unit. Specifically, for example, by switching the four-way valve, indoor heat is used to heat the heat exchanger of the outdoor unit, resulting in a great impact on indoor comfort during the defrosting process. [0004] Therefore, how to eff...

Claims

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Application Information

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IPC IPC(8): F24F11/00
Inventor 李永镇张浩谭周衡晏玉林
Owner GD MIDEA AIR-CONDITIONING EQUIP CO LTD
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