Air conditioning defrosting method

An air conditioner and heat exchanger technology, applied in the field of air conditioner defrosting, can solve problems affecting user comfort experience, mechanical strain, etc., and achieve the effects of improving defrosting effect, improving intelligence, improving comfort and reliability

Inactive Publication Date: 2019-12-06
GREE ELECTRIC APPLIANCES INC OF ZHUHAI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The inventor found that at least the following problems exist in the prior art: the existing defrosting method needs to switch the four-way valve, and the long-term oper

Method used

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Example Embodiment

[0046] Combine below Figure 1 ~ Figure 4 The technical solution provided by the present invention is described in more detail.

[0047] Before introducing the air conditioner defrosting method improved by the embodiment of the present invention, a refrigerant circulation system is introduced, and the air conditioner defrosting method provided by the embodiment of the present invention is explained in detail based on the system. It should be noted that these are only examples, not limitations.

[0048] See figure 1 , The embodiment of the present invention provides a refrigerant circulation system, the refrigerant circulation system includes a compressor 1, a first heat exchanger 2, two second heat exchangers 3, an oil separator 4, a gas-liquid separator 5, multiple Valves, filter driers 6 and throttling components 7.

[0049] The heating cycle process of the refrigerant circulation system is: compressor 1 → oil separator 4 → first 2 heat exchanger → dryer filter 6 → throttling ele...

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Abstract

The invention discloses an air conditioning defrosting method, and relates to the field of air conditioners. The method can be used for optimizing air conditioning defrosting. The air conditioning defrosting method comprises the following steps that a refrigerant circulating system of an air conditioner is in a heating cycle; whether each second heat exchanger meets the start defrosting conditionor not is judged, wherein the start defrosting condition refers that the exhaust temperature TP of a compressor is larger than the start defrosting exhaust set temperature TPS; and if the second heatexchangers meet the defrosting condition, each second heat exchanger is switched to a defrosting mode according to a set sequence; and the defrosting mode refers to break a heating circulation branchwhere the to-be-defrosted second heat exchanger is located, and the outlet of the compressor is enabled to be in communication with a bypass branch of the to-be-defrosted second heat exchanger. According to the technical scheme, bypass branch defrosting is adopted, the defrosting entering condition of the second heat exchangers is set, thus defrosting is carried out under the proper condition, thetemperature of the defrosting refrigerant is guaranteed, the defrosting effect is improved, and the defrosting duration is shortened.

Description

technical field [0001] The invention relates to the field of air conditioners, in particular to an air conditioner defrosting method. Background technique [0002] For low-temperature heating air-cooled screw units, the fins of the outdoor heat exchanger are evaporators during heating, and the fins will frost due to the low air temperature. If the frost is not defrosted in time, the frost layer attached to the fin surface will affect the heat transfer. The conventional defrosting method is to use a four-way reversing valve. By switching the four-way valve and reverse circulation of the refrigerant, the outdoor heat exchanger is defrosted. [0003] The inventor found that at least the following problems exist in the prior art: the existing defrosting method needs to switch the four-way valve, and the long-term operation of the four-way valve will cause mechanical strain; in addition, defrosting through the reverse cycle of the refrigerant will affect the comfort of the user ...

Claims

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Application Information

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IPC IPC(8): F24F11/42F24F11/64F24F11/65F24F11/61F25B47/02
CPCF24F11/42F24F11/61F24F11/64F24F11/65F25B47/02
Inventor 卓明胜陈培生钟海玲程琦冯文星
Owner GREE ELECTRIC APPLIANCES INC OF ZHUHAI
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