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Method for detecting refrigerant leakage and air conditioner

A leakage detection and refrigerant technology, which is applied in the direction of machinery and equipment, can solve the problems of easy misjudgment, refrigerant leakage, single detection data parameters, etc., and achieve the effects of avoiding potential safety hazards, perfect functions, and avoiding damage

Active Publication Date: 2021-08-27
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] In view of this, the present invention aims to propose a refrigerant leakage detection method to solve the problems in the prior art that when the air conditioner performs refrigerant leakage judgment, the judgment method is simple, the detection data parameters are relatively single, and misjudgment is prone to occur.

Method used

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  • Method for detecting refrigerant leakage and air conditioner
  • Method for detecting refrigerant leakage and air conditioner
  • Method for detecting refrigerant leakage and air conditioner

Examples

Experimental program
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Effect test

Embodiment 1

[0056] figure 1 It is a refrigerant leakage detection method according to an embodiment of the present invention, specifically comprising the following steps:

[0057] S1. Detect the current running state of the air conditioner. When the running of the air conditioner is stable, the control system enters into the refrigerant leakage determination procedure.

[0058] Among them, there are many indicators to measure the operating state of the air conditioner, such as the continuous running time of the compressor, the difference between the current indoor temperature and the indoor coil temperature, and the outdoor ambient temperature. Through the combination of various methods, it can accurately judge whether the operation status of the air conditioner meets the requirements, and then judge whether the operation of the air conditioner is stable. When the air conditioner is in stable operation, it enters the refrigerant leakage determination program to ensure accurate detection. ...

Embodiment 2

[0072] Such as Figure 2~4 As shown, this embodiment further defines the refrigerant leakage detection method on the basis of Embodiment 1, specifically including the following steps:

[0073] S11. After the air conditioner is turned on, the system automatically records the continuous running time ta of the compressor, and judges whether the continuous running time ta of the compressor reaches the first preset time t1. When the continuous running time ta of the compressor reaches the first preset time t1 , execute step S12.

[0074] Specifically, right after the air conditioner is turned on, the air conditioner has not yet adjusted the indoor ambient temperature, and the difference between the indoor ambient temperature and the target temperature set by the user is large, and the compressor runs at a higher frequency. In order to quickly adjust the indoor temperature, the expansion valve The opening degree is relatively large. After the continuous running time of the compress...

Embodiment 3

[0125] On the basis of Embodiments 1 and 2, this embodiment also provides an air conditioner, the air conditioner adopts the refrigerant leakage detection method described in the above embodiment, and specifically the air conditioner includes a compressor, an evaporator , a refrigerant circulation pipeline, a detection system, a timing module and a control system; the detection system and the timing module are connected to the control system, one end of the refrigerant circulation pipeline system is connected to the compressor, and the other end is connected to the evaporator. The detection system includes a temperature detection system and a rotational speed detector, and the temperature detection system includes:

[0126] The first temperature sensor is arranged at the air inlet of the indoor unit and is used to detect the indoor temperature;

[0127] The second temperature sensor is arranged on the evaporator coil of the indoor unit, and is used to detect the temperature of t...

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Abstract

The invention provides a refrigerant leakage detection method, comprising: S1, when the operation of the air conditioner is stable, the control system enters the refrigerant leakage determination program; S2, executes the refrigerant leakage determination program, when the real-time discharge temperature of the compressor When the theoretical discharge temperature and the theoretical discharge temperature meet the first preset condition, and the temperature difference between the indoor temperature and the refrigerant temperature at the outlet of the evaporator meets the second preset condition, it is determined that refrigerant leakage occurs; S3, execute the refrigerant leakage verification program; S4 1. Execute the procedure for determining the amount of refrigerant leakage, and judge the influence of the amount of refrigerant leakage on the operation of the compressor according to whether the return air temperature of the compressor is within the preset temperature range. The refrigerant leakage detection method of the present invention can accurately determine whether refrigerant leakage occurs, and can also accurately determine whether it is necessary to add refrigerant after the refrigerant leakage occurs, which is convenient for users or maintenance personnel to maintain and repair the air conditioner. Refrigerant charge.

Description

technical field [0001] The invention relates to the technical field of air conditioning, in particular to a refrigerant leakage detection method and an air conditioner. Background technique [0002] Existing air-conditioning and refrigeration systems include compressors, outdoor heat exchangers, throttling devices, indoor heat exchangers, and pre-charged with a certain amount of refrigerant. In the case of no leakage of refrigerant, the air conditioning system can operate normally. If the installation of the air conditioner is not standardized or the refrigerant in the system pipeline leaks slowly for a long time due to vibration and other reasons during later operation, the cooling effect of the air conditioner system will deteriorate. When the refrigerant leak is severe, it often burns the compressor. Therefore, it is very necessary to detect the leakage of refrigerant in the air conditioner. In the prior art, when an air conditioner is used to determine refrigerant lea...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F24F11/36F24F11/64F24F11/52F24F11/61
CPCF24F11/36F24F11/52F24F11/61F24F11/64
Inventor 白韡许真鑫
Owner AUX AIR CONDITIONING LTD BY SHARE LTD
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