Validity detection method and device of air conditioner leak detection sensor, and air conditioner

Abstract

The invention discloses a validity detection method and device of an air conditioner leak detection sensor, and an air conditioner. The method comprises the steps of: ejecting calibration gas through a calibration gas generating device; judging whether the leak detection sensor detects the calibration gas; determining that the leak detection sensor fails to detect the calibration gas, and determining that the leak detection sensor is invalid; displaying a detection result through a display device. The validity detection method and device solve the problem in the prior art that the validity detection of the leak detection sensor is less considered, validity detection is carried out on the leak detection sensor of an air conditioner system, a dual-protection effect is achieved, the validity of the leak detection sensor itself is ensured, and the safety of the air conditioner system using an inflammable refrigerant is further improved.

Description

technical field [0001] The invention relates to the field of air conditioners, in particular to a method and device for detecting the effectiveness of an air conditioner leak detection sensor and an air conditioner. Background technique [0002] Freon is the most commonly used refrigerant in compression air conditioners, referred to as CFC, which is non-toxic, odorless, non-flammable and explosive, has good thermal and chemical stability, and is less corrosive to metal materials and has good wettability. and other advantages, but also due to the extensive use of freon, it has brought some negative effects: freon will decompose into toxic gas when it encounters flames, it is easy to leak and difficult to find, it has a destructive effect on the ozone layer of the atmosphere, and it has a direct impact on the earth's surface. And the indirect greenhouse effect, serious pollution to the atmosphere, etc. In order to protect the living environment of human beings, people began t...

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Problems solved by technology

[0002] Freon is the most commonly used refrigerant in compression air conditioners, referred to as CFC, which is non-toxic, odorless, non-flammable and explosive, has good thermal and chemical stability, and is less corrosive to metal materials and has good wettability. and other advantages, but also due to the extensive use of freon, it has brought some negative effects: freon will decompose into toxic gas when it encounters flames, it is easy to leak and difficult to find, it has a destructive effect on the ozone layer of the atmosphere, and it has a direct impact on the earth's surface. And the indirect greenhouse effect, serious pollution to the atmosphere, etc.

In order to protect the living environment of human beings, people began to replace the above problems with new refrigerants. Currently, the widely used alternative refrigerants are hydrocarbons and HFC refrigerants. However, most of these refrigerants are easy to burn and explode. Leakage presents a risk of explosion

Therefore, it is particularly important to use the flammable refrigerant safely and reliably in the refrigeration system, so certain explosion-proof measures must be taken, such as using a leak detection sensor in the air conditioner system to judge whether the system is leaking, so as to take corresponding protective measures, but , less consideration is given to the detection of the effectiveness of the leak detection sensor. The leak detection sensor will fail to work for a long time. In this case, the leakage of flammable refrigerants cannot be detected, and there are potential safety hazards.

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