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Refrigerant leakage detection device and method and air conditioner

A leak detection, air conditioner technology, applied in the direction of mechanical equipment, etc., can solve the problems of filling volume limit, flammable and explosive, flammable and explosive development, etc.

Inactive Publication Date: 2021-07-23
珠海拓芯科技有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Air conditioners are widely used in daily life. Air conditioners mainly use refrigerant as a heat transfer medium to cool or heat indoor air. At present, the refrigerant is usually R290, which has excellent performance in environmental protection, high efficiency, and energy saving. However, R290 has another fatal Disadvantages: flammable and explosive, and the amount of filling in the air conditioner is easily limited. Even if there is a trend of opening up the amount of filling in the future, its flammable and explosive characteristics are a major obstacle restricting its development
[0003] At present, most air conditioners have detection and protection methods. However, most of the air conditioner refrigerants currently use logic control to control the shutdown of the air conditioner when the leakage concentration of the refrigerant is reached. Most of them cannot directly disconnect the power supply, and there are also flammable and explosive hazards. risk

Method used

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  • Refrigerant leakage detection device and method and air conditioner
  • Refrigerant leakage detection device and method and air conditioner

Examples

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no. 1 example

[0032] see figure 1 This embodiment provides a refrigerant leakage protection device 100 and method, which are applied to the air conditioner 10, and can control the power off of the air conditioner 10 when the refrigerant leakage concentration is high, and improve the safety performance of the air conditioner 10.

[0033] The air conditioner 10 is widely used in daily life. The air conditioner 10 mainly uses refrigerant as the heat transfer medium to cool or heat the indoor air. At present, the refrigerant is usually R290 with excellent performance of environmental protection, high efficiency and energy saving, but R290 has other A fatal shortcoming is that it is flammable and explosive, and the filling volume in the air conditioner 10 is easily limited. Even if there is a trend to open the filling volume in the future, its flammable and explosive characteristics are a major obstacle restricting its development.

[0034] At present, most of the air conditioners 10 are equippe...

no. 2 example

[0063] see figure 2 This embodiment provides a refrigerant leakage detection method. The refrigerant leakage detection method provided by this embodiment can control the power-off of the air conditioner 10 when the leakage concentration of the refrigerant is high, so as to improve the safety performance of the air conditioner 10 .

[0064] For brief description, the first embodiment may be referred to for the parts not mentioned in this embodiment.

[0065] Step S100, receiving the leakage concentration of the refrigerant.

[0066] The leakage concentration is detected by the detector 110 and sent to the controller 120 after detection by the detector 110 .

[0067] Step S200, judging whether the leakage concentration is greater than or equal to a first preset value.

[0068] In this embodiment, the first preset value is a critical value of dangerous situations such as burning or explosion if the body 300 is powered on. If the leakage concentration exceeds the first preset ...

no. 3 example

[0077] see figure 1 , this embodiment provides an air conditioner 10 , the air conditioner 10 provided by this embodiment can control the power off of the air conditioner 10 when the leakage concentration of the refrigerant is high, and improve the safety performance of the air conditioner 10 .

[0078] For brief description, the first embodiment may be referred to for the parts not mentioned in this embodiment.

[0079] The air conditioner 10 includes a body 300 , a power cord 200 and the refrigerant leakage control device provided in the first embodiment. The switch unit 130 is connected in series on the power cord 200 , and the power cord 200 is connected to the body 300 and the power supply.

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Abstract

The invention provides a refrigerant leakage protection device and method and an air conditioner, and relates to the technical field of air conditioners. The refrigerant leakage protection device comprises a detector, a controller and a switch unit, the detector and the switch unit are electrically connected with the controller, and the switch unit is used for being connected to a power line in series; the detector is used for detecting the leakage concentration of a refrigerant of a machine body and sending the leakage concentration to the controller; and the controller is used for controlling the switch unit to be switched off to cut off the machine body when the leakage concentration is larger than or equal to a first preset value. When the controller judges that the leakage concentration of the refrigerant detected by the detector is larger than or equal to the first preset value, it shows that the current leakage concentration is too high, and when the leakage concentration is larger than or equal to the first preset value, the controller can control the switch unit to be switched off, a machine body power supply is directly switched off, the machine body is prevented from being always in a power-on state, or the situation that the machine body is started up due to misoperation, and danger occurs is avoided, so that the safety performance of the whole air conditioner is ensured.

Description

technical field [0001] The invention relates to the technical field of air conditioners, in particular to a refrigerant leakage detection device and method and an air conditioner. Background technique [0002] Air conditioners are widely used in daily life. Air conditioners mainly use refrigerant as a heat transfer medium to cool or heat indoor air. At present, the refrigerant is usually R290, which has excellent performance in environmental protection, high efficiency, and energy saving. However, R290 has another fatal The disadvantage is that it is flammable and explosive, and the filling volume in the air conditioner is easily limited. Even if there is a trend of opening the filling volume in the future, its flammable and explosive characteristics are a major obstacle restricting its development. [0003] At present, most air conditioners have detection and protection methods. However, most of the air conditioner refrigerants currently use logic control to control the shu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F24F11/36F24F11/64F24F11/52F24F11/54F24F11/89
CPCF24F11/36F24F11/64F24F11/52F24F11/54F24F11/89
Inventor 周振威陈志强王学武
Owner 珠海拓芯科技有限公司