Method for automatically detecting lack of refrigerant in air-conditioner

A lack of refrigerant and automatic detection technology, applied in the direction of instruments, heating methods, measuring devices, etc., can solve the problems of low maintenance efficiency, high maintenance cost, lack of automatic refrigerant detection methods for air conditioners, etc., to reduce maintenance costs and improve efficiency effect

Active Publication Date: 2010-11-03
四川长虹空调有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved by the present invention is to propose an automatic detection method for the lack of refrigerant in an air conditioner, which solves the problem that the traditional technology cannot automatically detect and alarm the failure of the lack of refrigerant, resulting in high maintenance costs and low maintenance efficiency

Method used

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Examples

Experimental program
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Effect test

Embodiment

[0017] The refrigerant described in this example takes R22 as an example, and the air conditioner is a 1P power air conditioner. The specific detection method is as follows:

[0018] a. After the air conditioner starts running, real-time detection of indoor temperature (Ta), outdoor temperature (Tc), indoor condenser coil temperature (Tb), outdoor evaporator coil temperature (Td) and compressor operating current value;

[0019] b. Determine the current operating state of the air conditioner, if it is in the cooling state, execute step c, and if it is in the heating state, execute step d;

[0020] c. After the compressor runs for 3-8 minutes, if Ta-Tb<2-5°C, adjust the indoor fan speed of the air conditioner to the lowest speed, and after running for another 3-8 minutes, if Ta-Tb<2-4 ℃, and Td-Tc < 1 ~ 2 ℃, and the running current of the compressor detected at this time is lower than 2A, then stop the compressor and outdoor fan to protect the system. The system abnormality and...

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PUM

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Abstract

The invention relates to an air-conditioner, in particular to a method for automatically detecting the lack of refrigerant in the air-conditioner. The invention discloses a method for automatically detecting the lack of refrigerant in the air-conditioner in order to solve the problems that the prior art can not automatically detect the fault of the lack of refrigerant or give an alarm to result in high maintenance cost and low maintenance efficiency. The automatic detecting method comprises the following steps of: detecting the difference between the indoor temperature and the temperature of an inner coiled tube, the difference between the outdoor temperature and the temperature of an outer coiled tube and the running current value of a compressor at real time after the air-conditioner runs; and compared with the normal conditions, judging whether the large deviation exists or not so as to judge whether the present refrigerant lacks or not. The invention has the advantages of automatically detecting the fault of the lack of refrigerant in the air-conditioner, immediately giving an alarm, reminding users of the associated maintenance, reducing the maintenance cost and improving the efficiency; and the invention is suitable for detecting whether the air-conditioner lacks of refrigerant or not.

Description

technical field [0001] The invention relates to an air conditioner, in particular to an automatic detection method for lack of refrigerant in the air conditioner. Background technique [0002] For air conditioners, when the copper pipes and other joints are not well connected during installation, or the condenser, evaporator, and copper pipes are finely cracked after use, the refrigerant will leak, which will lead to poor cooling and heating effects. However, when an abnormality occurs in the current air conditioner system, a fault alarm cannot be automatically performed, and the user cannot understand the problem that occurs. The maintenance personnel need to come to the door to understand the problem first, and then return to get the relevant maintenance tools. After repeated visits several times, the air conditioner can be repaired. Increased maintenance costs, low maintenance efficiency. Contents of the invention [0003] The technical problem to be solved by the pre...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F24F11/00G01R19/165
Inventor 钟明涂小平
Owner 四川长虹空调有限公司
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