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Automatic anti-blocking method of air conditioner external unit

An outdoor unit and automatic technology for air conditioners, applied in mechanical equipment and other directions, can solve the problems of clogging the heat exchanger fins, difficult to clean, and small gaps between the fins, so as to improve work efficiency and optimize the operating environment.

Inactive Publication Date: 2019-01-18
AUX AIR CONDITIONING LTD BY SHARE LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Usually, the outdoor unit of the air conditioner is installed outdoors. On the one hand, when the outdoor ambient temperature is relatively low and the humidity is relatively high, if the indoor unit operates in heating mode, low-temperature refrigerant will flow through the heat exchanger, and the outdoor humid air will It will condense on the cooling fins of the heat exchanger and slowly form frost. With the increase of the operating time of the air conditioner, the frost on the heat exchanger will gradually thicken, and even block the cooling fins of the heat exchanger; On the one hand, the air-conditioning outdoor units currently on the market generally have air from the front and a heat exchanger on the back. During operation, outdoor air can only enter through the heat exchanger, and then the air comes out from the front. In the long run, it will cause smoke and dust in the air. Dust, exhaust gas, flocs, etc. adhere to or get stuck on the heat exchanger, blocking the cooling fins of the heat exchanger
The blockage of the cooling fins of the heat exchanger will reduce the heat exchange effect of the heat exchanger, resulting in poor heating effect of the indoor mechanism, which not only deteriorates the operating environment of the air conditioner, but also increases the energy consumption of the air conditioner during operation
However, due to the special installation location of the air conditioner, generally in a higher place outdoors, it is difficult for ordinary people to access it without other auxiliary tools, and it is even more difficult to clean it. In addition, in order to increase the heat exchange area , the structure of the heat exchanger is generally complex, and the gap between the cooling fins is extremely small. This structure makes it difficult to effectively clean the heat exchanger
[0004] In the related technology, after the heat exchanger is frosted, the air conditioner will start the defrosting program, such as controlling the reversing of the four-way valve, so that the high-temperature refrigerant flows through the heat exchanger and melts the frost on the heat exchanger. The frost condensed on the air conditioner can be simply treated by melting, but other adherents on the cooling fins of the heat exchanger cannot be completely removed

Method used

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  • Automatic anti-blocking method of air conditioner external unit
  • Automatic anti-blocking method of air conditioner external unit
  • Automatic anti-blocking method of air conditioner external unit

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] like figure 1 As shown, first perform step S1: turn on the automatic anti-blocking function, and enable the air conditioner to turn on the automatic anti-blocking function through the remote control; then perform step S2: turn on the heating mode of the air conditioner, so that the outdoor humid air gradually condenses on the heat dissipation of the heat exchanger Frost slowly forms on the fins; then execute step S3: judge whether the heating mode running time ≥ T1, if yes, execute S4; if not, execute S2, after the heating mode running time ≥ T1, the judgment result of step S3 is Yes; continue to step S4: switch the air conditioner operation mode, the external fan runs in reverse, and remove the blockage on the heat exchanger.

[0032] like figure 2 As shown, the step S4 includes the following steps: S401: Switch to cooling mode operation; S402: Determine whether the running time of the cooling mode is ≥ T2, if yes, execute S403, if not, execute S401; S403: Stop the c...

Embodiment 2

[0034] like figure 1As shown, first perform step S1: turn on the automatic anti-blocking function, and enable the air conditioner to turn on the automatic anti-blocking function through the APP; then perform step S2: turn on the heating mode of the air conditioner, so that the outdoor humid air gradually condenses on the cooling fins of the heat exchanger Frost slowly forms on the chip; then execute step S3: judge whether the heating mode running time is ≥ T1, if yes, execute S4; if not, execute S2, after the heating mode running time ≥ T1, the judgment result of step S3 is yes ;Continue to step S4: switch the air conditioner operation mode, the external fan runs in reverse, and removes the blockage on the heat exchanger.

[0035] like image 3 As shown, the step S4 includes the following steps: S411: Switch to the defrosting mode, and the external fan runs in reverse; S412: Determine whether the defrosting mode and the reverse running time of the external fan are greater tha...

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Abstract

The invention provides an automatic anti-blocking method of an air conditioner external unit. The automatic anti-blocking method includes the following steps: S1, starting an automatic anti-blocking function; S2, turning on an air conditioner in a heating mode; S3, judging whether the heating mode running time is >= T1, and if so, executing S4; and S4, switching the air conditioning mode, to enable an external fan to run reversely to clear blockages on a heat exchanger. The automatic anti-blocking method of the air conditioner external unit can blow away the dust and impurities on the heat exchanger of the air conditioner external unit, especially the dust, the impurities and other adhered objects together with water on heat radiating fins of the heat exchanger, by using the washing and scouring action of the frost-melting water on the heat radiating fins of the heat exchanger of the air conditioner external unit and the purging action of the airflow generated by the reverse running ofthe fan in different air conditioner operating modes, thus realizing the automatic anti-blocking of the air conditioner external unit, improving the working efficiency of the air conditioner, and optimizing the operating environment of the air conditioner.

Description

technical field [0001] The invention belongs to the technical field of air conditioners, and in particular relates to an automatic anti-blocking method for an external unit of an air conditioner. Background technique [0002] The external unit of an air-cooled air conditioner is generally composed of a refrigeration system composed of heat exchangers, pipeline components, compressors, and valves, an air duct system composed of fans, fan blades, and net covers, and a control system. Among them, the heat exchange of the heat exchanger relies on the air provided by the fan to flow through the heat exchanger to take away the heat. The heat exchanger is generally composed of copper tubes and cooling fins attached to the surface of the copper tubes. The function of the cooling fins is to increase the heat transfer area and improve the heat transfer efficiency. [0003] Usually, the outdoor unit of the air conditioner is installed outdoors. On the one hand, when the outdoor ambien...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F24F11/42F24F11/65F24F11/58F24F11/61
Inventor 郑吉存郑丹露
Owner AUX AIR CONDITIONING LTD BY SHARE LTD