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Refrigerating agent leakage detection method and air conditioner

A leak detection and refrigerant technology, applied in mechanical equipment and other directions, can solve problems such as misjudgment, single detection data parameter, refrigerant leakage, etc., to avoid potential safety hazards, avoid damage, and improve functions.

Active Publication Date: 2020-03-20
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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  • Refrigerating agent leakage detection method and air conditioner
  • Refrigerating agent leakage detection method and air conditioner
  • Refrigerating agent leakage detection method and air conditioner

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Experimental program
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Embodiment 1

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

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

[0058] Among them, there are many indicators for measuring the operating state of the air conditioner, such as the continuous operating time of the compressor, the difference between the current indoor temperature and the indoor coil temperature, and the outdoor ambient temperature. Through a combination of multiple methods, it can accurately determine whether the operating state of the air conditioner meets the requirements, and then determine whether the operation of the air conditioner is stable, and enter the refrigerant leakage determination procedure when the air conditioner is stable to ensure accurate detection.

[00...

Embodiment 2

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

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

[0074] Specifically, immediately after the air conditioner is turned on, the air conditioner has not adjusted the indoor ambient temperature. The difference between the indoor ambient temperature and the user-set target temperature is large. The compressor runs at a higher frequency. In order to quickly adjust the indoor temperature, the expansion valve The opening degree is larger. After the compressor's continuous running time reaches the first preset...

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. Specifically, the air conditioner includes a compressor and an evaporator. , Refrigerant circulation pipeline, detection system, timing module and control system; the detection system and timing module are connected with the control system, and one end of the refrigerant circulation pipeline system is connected with the compressor and the other end is connected with the evaporator. The detection system includes a temperature detection system and a rotation speed detector, and the temperature detection system includes:

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

[0127] The second temperature sensor is arranged on the indoor unit evaporator coil for detecting the temperature of the indoor coil;

[0128] The third t...

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Abstract

The invention provides a refrigerating agent leakage detection method. The refrigerating agent leakage detection method comprises the steps that 1, when an air conditioner runs stably, a control system starts a refrigerating agent leakage judgment procedure; 2, the refrigerating agent leakage judgment procedure is conducted, and when the real-time exhaust temperature and the theoretical exhaust temperature of a compressor meet a first preset condition and the temperature difference between the indoor temperature and the temperature of a refrigerating agent at an evaporator outlet meets a second preset condition, it is judged that refrigerating agent leakage occurs; 3, a refrigerating agent leakage validation procedure is conducted; and 4, a refrigerating agent leakage amount judgment procedure is conducted, and influences of the refrigerating agent leakage amount on compressor running are judged according to the fact whether the air return temperature of the compressor is within the preset temperature range or not. According to the refrigerating agent leakage detection method, whether refrigerating agent leakage occurs or not can be accurately judged, whether a refrigerating agentneeds to be supplemented and added or not also can be accurately judged after it is judged that refrigerating agent leakage occurs, and then users or maintenance personnel can conveniently maintain the air conditioner and fill the refrigerating agent.

Description

Technical field [0001] The invention relates to the technical field of air conditioners, 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 absence of refrigerant leakage, the air-conditioning system can operate normally. If the installation of the air conditioner is not standardized or the system pipeline has a long-term slow leakage of refrigerant due to vibration and other reasons during later operation, the cooling effect of the air conditioning system will deteriorate. When the refrigerant leakage is severe, the compressor will often be burned. Therefore, it is necessary to detect the refrigerant leakage in the air conditioner. When the air conditioner in the prior art performs refrigerant leakage judgment, the jud...

Claims

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Application Information

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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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