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Detection method of air conditioner refrigerant leakage

A refrigerant leakage and detection method technology, which is applied in the direction of mechanical equipment, can solve the problems of high false alarm rate, low detection accuracy, air-conditioning refrigerant leakage, etc., and achieve the effect of good accuracy, high detection accuracy and improved accuracy

Active Publication Date: 2020-01-17
AUX AIR CONDITIONING LTD BY SHARE LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In view of this, the present invention aims to propose an air-conditioning refrigerant leakage detection method to solve the problems of extremely low detection accuracy and high false alarm rate in the existing air-conditioning refrigerant leakage detection method

Method used

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  • Detection method of air conditioner refrigerant leakage
  • Detection method of air conditioner refrigerant leakage
  • Detection method of air conditioner refrigerant leakage

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] Example 1, such as Figure 1-8 As shown, an air-conditioning refrigerant leakage detection method includes step S1: obtaining a preset standard characteristic curve M of compressor power changing with frequency, and judging whether the compressor is working normally through the preset power threshold curve N; S2: as The compressor is running normally, and the current refrigerant pressure in the air-conditioning coil and the cumulative use time of the air conditioner are obtained, and the preset pressure threshold curve is used to determine whether refrigerant leakage occurs; S3: If the air conditioner has refrigerant leakage, calculate the refrigerant leakage rate and activate the alarm unit.

[0036] The principle of the air conditioner refrigerant leakage detection method of the present invention is as follows: firstly, the actual frequency and the actual power W of the compressor when the air conditioner is used for refrigerant leakage detection 实 , and then compare ...

Embodiment 2

[0041] In order to further realize the purpose of the air-conditioning refrigerant leakage detection method of the present invention with high detection precision and good accuracy, which can effectively reduce the probability of false alarms, on the basis of Embodiment 1, the air-conditioning refrigerant leakage detection method is further optimized.

[0042] Specifically, such as Figure 1-8 As shown, the step S1 includes step S11: obtaining the actual frequency and power W of the compressor 实 ; S12: Obtain the standard characteristic curve M of the preset compressor power changing with frequency, obtain the preset power threshold curve N, pass the actual frequency and power value of step S11 and the standard characteristic curve of the compressor power changing with frequency M. Power threshold curve N, determine the power threshold W at the corresponding frequency 阈值 and standard power value W 标 ; S13: Calculate W described in step S12 标 with step S11 as described in W ...

Embodiment 3

[0057] In order to further realize the purpose of the air-conditioning refrigerant leakage detection method of the present invention with high detection precision and good accuracy, which can effectively reduce the probability of false alarms, on the basis of Embodiment 1, the air-conditioning refrigerant leakage detection method is further optimized.

[0058] Specifically, the step S3 includes step S301: re-detecting the refrigerant concentration C in the return air of the air conditioner indoor unit 回 ; S302: The refrigerant concentration C detected twice 回 respectively converted into voltage; S303: amplify the voltage signal; S304: send the amplified voltage signal to the voltage comparator to obtain the voltage signal variation △Q twice; S305: obtain the preset voltage signal variation Quantity Threshold Q 1 and Q 2 ;S306: Determine whether △Q is greater than Q 1 , if not, it is determined that the air conditioner has a primary leak, and the sound and light alarm system...

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Abstract

The invention provides a detection method of air conditioner refrigerant leakage. The detection method of air conditioner refrigerant leakage comprises the steps that S1, a preset standard feature curve M of change of compressor power along with frequency is obtained, and whether a compressor is in normal work or not is judged through a preset power threshold value curve N; S2, if the compressor operates normally, the refrigerant pressure in an air conditioner coiler and the accumulated use time of the air conditioner are obtained, and according to a preset pressure threshold value curve, whether refrigerant leakage happens or not is judged; S3, if refrigerant leakage happens to the air conditioner, the refrigerant leakage rate is calculated, and an alarming unit is started. The detectionmethod of the air conditioner refrigerant leakage is high in detection precision, good in accuracy and capable of effectively lowering false alarm probability.

Description

technical field [0001] The invention relates to the technical field of air-conditioning equipment, in particular to an air-conditioning refrigerant leakage detection method. Background technique [0002] As a device to improve the indoor temperature environment, air conditioners are more and more popular, and air conditioners have generally entered families today. Since the air conditioner has the functions of temperature adjustment, defrosting control, humidity adjustment, air flow speed adjustment and air cleanliness adjustment, etc., the structure is complex and the power is large during operation. If the protection is not timely, it will cause the air conditioning equipment to burn out and cause a disaster. During the use of air conditioners, the most common failure is refrigerant leakage. On the one hand, refrigerant leakage will damage the health of users and pollute the atmospheric environment. On the other hand, refrigerant leakage will affect the normal operation o...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F24F11/36F24F11/61F24F11/64
CPCF24F11/36F24F11/61F24F11/64
Inventor 白韡许真鑫
Owner AUX AIR CONDITIONING LTD BY SHARE LTD
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