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Air conditioner and refrigerant leakage detection method for air conditioner

A leak detection and air conditioner technology, applied in the control input, heating mode, space heating and ventilation related to air characteristics, can solve the problems of refrigerant leakage and misjudgment of refrigerant leakage, and avoid interference and misjudgment. , the effect of reducing misjudgments

Active Publication Date: 2020-02-07
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 conditioner and an air conditioner refrigerant leakage detection method to solve the problem that the air conditioning system is prone to misjudgment of refrigerant leakage in the prior art, so as to improve the accuracy of the air conditioner in judging refrigerant leakage

Method used

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  • Air conditioner and refrigerant leakage detection method for air conditioner
  • Air conditioner and refrigerant leakage detection method for air conditioner
  • Air conditioner and refrigerant leakage detection method for air conditioner

Examples

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Embodiment 1

[0068] as attached figure 1 As shown, this embodiment provides a method for detecting refrigerant leakage of an air conditioner. The subject of the method is an air conditioner, and the refrigerant includes at least two components. The method includes the following steps:

[0069] S1. Start the air conditioner, obtain relevant information before operation, and obtain the pre-operation frequency f0 according to the relevant information before operation;

[0070] The relevant information before operation includes the preset mode of the air conditioner, the outdoor temperature T21 before operation, the indoor temperature T22 before operation, and the coil temperature T11 of the indoor unit before operation; wherein, the air conditioner detects various temperature parameters by setting several temperature sensors .

[0071] The air conditioner preset mode includes the operation mode before the last shutdown of the air conditioner and the operation mode set by the user; specifical...

Embodiment 2

[0086] In order to further ensure the accuracy of refrigerant leakage detection, as attached figure 2 As shown, on the basis of the air conditioner refrigerant leakage detection method described in Embodiment 1, the present invention further explains the process of obtaining the concentration percentage of each component for the air conditioner, specifically step S5.

[0087] Specifically, the step S5 includes:

[0088] S501. The air conditioner obtains the wavelength data of each component of the refrigerant in the suction pipe through the infrared sensor in the suction pipe of the compressor;

[0089] Specifically, the refrigerant is refrigerant R404A, including pentafluoroethane, trifluoroethane, and tetrafluoroethane, wherein preferably, the concentration percentage of pentafluoroethane is 5%-30%, trifluoroethane The concentration percentage is 40%-60%, and the concentration percentage of tetrafluoroethane is 20%-35%;

[0090] An infrared sensor is installed in the suct...

Embodiment 3

[0114] as attached image 3 As shown, in order to further improve the accuracy of the air conditioner in judging refrigerant leakage, the present invention proposes another air conditioner refrigerant leakage detection method, which specifically includes:

[0115] S01, start the air conditioner, obtain the preset mode of the air conditioner, the outdoor temperature T21 before operation, the indoor temperature T22 before operation, and the coil temperature T11 of the indoor unit before operation;

[0116] S02. The air conditioner obtains the pre-operation frequency f0 according to the preset mode of the air conditioner, the outdoor temperature T21 before operation, and the indoor temperature T22 before operation, pre-operates the air conditioner, and controls the compressor to operate according to f0;

[0117] S03, after the pre-running of the air conditioner for t1, obtain the pressure P11 of the suction pipe of the compressor;

[0118] S04. The air conditioner judges whether...

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Abstract

The invention provides an air conditioner and a refrigerant leakage detection method for the air conditioner. The refrigerant leakage detection method comprises the following steps that S1, the air conditioner is started up, relevant information before operation is acquired, and a pre-operation frequency is acquired according to the relevant information before operation; S2, the air conditioner ispre-operated, and the compressor is controlled to operate according to the pre-operating frequency; S3, compressor suction pipe pressure P11 is acquired after pre-running for t1 hours; S4, the air conditioner judges whether P11 is less than or equal to a preset pressure value or not; if yes, refrigerant leakage occurs, otherwise, the S5 is carried out; S5, the concentration percentage of refrigerant components is obtained in the suction pipe of the compressor; and S6, whether the concentration percentages of refrigerant components are all within a preset numerical range or not is judged; if yes, refrigerant leakage occurs; if no, the air conditioner ends the pre-operation and operates according to the preset mode of the air conditioner. The refrigerant leakage detection method of the airconditioner effectively improves the accuracy of refrigerant leakage detection of the air conditioner and avoids misjudgment.

Description

technical field [0001] The invention relates to the technical field of air conditioners, in particular to an air conditioner and a method for detecting refrigerant leakage of the air conditioner. Background technique [0002] With the progress of today's society and the development of economy, air conditioners, as a relatively important electrical equipment in people's daily life, have entered thousands of households. However, during the installation process and long-term use of the air conditioner, the pipeline may be damaged due to poor sealing, bending, long-term corrosion or other external force majeure, resulting in leakage of the air conditioner refrigerant. Fundamentally, the leakage of refrigerant is reflected by the reduction of refrigerant flow. Insufficient amount of refrigerant will degrade the performance of the air conditioner, make the compressor run in a poor condition, and even damage the compressor in severe cases. [0003] Most of the current technologies...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F24F11/64F24F11/86F24F11/36F24F11/65F24F11/89F24F110/12F24F110/10
CPCF24F11/36F24F11/64F24F11/65F24F11/86F24F11/89F24F2110/10F24F2110/12
Inventor 许真鑫白韡
Owner AUX AIR CONDITIONING LTD BY SHARE LTD
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