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Method for judging filter clogging, multi-connected air conditioner and readable medium

A filter clogging and determination method technology, which is applied to compressors with reversible cycles, refrigeration safety arrangements, refrigerators, etc., can solve problems such as dirty and clogged filters of internal machines, affecting the effect of internal machines, and irregular production and installation. To achieve the effect of reducing maintenance costs

Active Publication Date: 2021-09-21
NINGBO AUX ELECTRIC
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Problems solved by technology

[0002] At present, due to the non-standard production and installation of multi-connected air-conditioning internal units, especially the lack of nitrogen-filled welding to produce scale, the scale will continue to accumulate at the filter before the expansion valve with the operation of the air-conditioning system, often appearing inside The air conditioner filter is dirty and clogged, and the refrigerant in the indoor unit cannot be effectively circulated, which seriously affects the effect of the indoor unit. At this time, it is necessary to disassemble the unit to troubleshoot the problem. However, the current indoor units of air conditioners are mostly installed in the ceiling, and disassembly is very troublesome. High maintenance cost

Method used

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  • Method for judging filter clogging, multi-connected air conditioner and readable medium
  • Method for judging filter clogging, multi-connected air conditioner and readable medium

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Embodiment Construction

[0037] At present, due to non-standard production and installation of multi-connected air conditioners, there is not enough nitrogen to fill the refrigerant pipes being welded during welding, and oxide scales will be formed on the inner surface of the copper pipes, and the oxide scales will follow the operation of the air conditioning system. Continuously accumulate at the filter 1 before the expansion valve 6 (the diameter of the expansion valve is usually relatively small, and it is easy to be blocked. In order to avoid the blockage of the expansion valve, filters 1 are usually installed on both sides of the expansion valve 6), and internal machine filtration often occurs The filter 1 is dirty and blocked, or the metal impurities produced by the wear and tear of the internal parts of the compressor will continue to accumulate in the filter between the expansion valves along with the flow of the refrigerant, which will eventually cause the filter to be blocked, and the internal...

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Abstract

The invention provides a method for determining filter clogging, a multi-connected air conditioner and a readable medium, and relates to the technical field of air conditioning. The method for determining filter clogging includes: obtaining the liquid pipe temperature of each indoor unit in the multi-connected air conditioner , gas pipe temperature and ambient temperature; according to the liquid pipe temperature, gas pipe temperature and ambient temperature of each indoor unit, combined with the opening of the expansion valve of each indoor unit, it is judged whether the indoor unit is blocked; When the air conditioner is clogged, the inlet temperature and outlet temperature of the filter of the indoor unit are obtained; the filter clogging determination method of the present invention detects the liquid pipe temperature, air pipe temperature and expansion temperature of each indoor unit in the multi-connected air conditioner. The opening of the valve can accurately judge the blockage of the indoor unit, and further detect the inlet temperature and outlet temperature of the filter to accurately judge the blockage of the filter, lock the fault of the indoor unit, and reduce maintenance costs.

Description

technical field [0001] The invention relates to the technical field of air conditioners, in particular to a method for determining filter clogging, a multi-connected air conditioner and a readable medium. Background technique [0002] At present, due to the non-standard production and installation of multi-connected air-conditioning internal units, especially the lack of nitrogen-filled welding to produce scale, the scale will continue to accumulate at the filter before the expansion valve with the operation of the air-conditioning system, often appearing inside The air conditioner filter is dirty and clogged, and the refrigerant in the indoor unit cannot be effectively circulated, which seriously affects the effect of the indoor unit. At this time, it is necessary to disassemble the unit to troubleshoot the problem. However, the current indoor units of air conditioners are mostly installed in the ceiling, and disassembly is very troublesome. Maintenance costs are higher. ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F25B49/00F25B13/00
CPCF25B13/00F25B49/00F25B2313/023F25B2313/0311F25B2313/0314F25B2500/04
Inventor 张坤坤任小辉黄春刘合心
Owner NINGBO AUX ELECTRIC
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