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Air conditioner and air conditioner refrigerant leakage detecting method

A leak detection and air-conditioning technology, applied in the field of air-conditioning, can solve the problems of air-conditioning and air-conditioning refrigerant leakage, misjudgment of refrigerant leakage, etc., to achieve the effect of improving accuracy, effective detection, and avoiding misjudgment.

Active Publication Date: 2020-03-03
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 conditioner 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 air conditioner refrigerant leakage detecting method
  • Air conditioner and air conditioner refrigerant leakage detecting method
  • Air conditioner and air conditioner refrigerant leakage detecting method

Examples

Experimental program
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Embodiment 1

[0062] as attached figure 1 As shown, this embodiment provides a method for detecting refrigerant leakage of an air conditioner, the method is executed by an air conditioner, and the method includes the following steps:

[0063] S1, start the air conditioner;

[0064] S2. The air conditioner obtains relevant information before operation, and obtains the pre-operation frequency f0 according to the relevant information before operation;

[0065] The relevant information before operation includes preset mode, outdoor temperature T21 before operation, and indoor temperature T22 before operation; wherein, the air conditioner detects various temperature parameters by setting several temperature sensors.

[0066] The preset mode includes the operation mode before the last shutdown of the air conditioner and the operation mode set by the user; specifically, if the user actively sets the operation mode when the air conditioner is turned on this time, the preset mode is the operation m...

Embodiment 2

[0083] Considering the detection of refrigerant leakage that may have occurred before the air conditioner is not running, as shown in the attached figure 2 As shown, in this embodiment, on the basis of Embodiment 1, step S1 is further supplemented.

[0084] Specifically, the step S1 includes:

[0085] S101, start the air conditioner, and obtain the suction pipe pressure P11 when the compressor is not running;

[0086] After the air conditioner is turned on, at least before the compressor is running, the pressure of the suction pipe of the compressor is detected. Specifically, the air conditioner detects the pressure of the suction pipe of the compressor through a pressure acquisition device. The pressure acquisition device can be a pressure sensor or Pressure Switch.

[0087] S102. The air conditioner judges whether the suction pipe pressure P11 is lower than the preset pressure P21; if yes, refrigerant leakage occurs; otherwise, proceed to step S2.

[0088] During the per...

Embodiment 3

[0092] In order to further illustrate the subcooling detection process in the present invention, as attached figure 2 As shown, this embodiment further describes step S7 on the basis of embodiment 1 or embodiment 2.

[0093] Specifically, the step S7 includes:

[0094] S701. After the air conditioner has been running for t2, obtain the condenser outlet pressure P12 and the condenser outlet temperature T11;

[0095] Among them, there is no leakage of refrigerant in the pre-operation stage of the air conditioner, and after the pre-operation stage is over, the air conditioner starts to operate according to the preset mode. , to obtain the condenser outlet pressure P12 and the condenser outlet temperature T11; it should be noted that the condenser outlet pressure P12 refers to the actual pressure value of the refrigerant at the condenser outlet; the condenser outlet temperature T12 refers to the actual temperature value of the refrigerant at the condenser outlet .

[0096] S70...

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Abstract

The invention provides an air conditioner and an air conditioner refrigerant leakage detecting method. The air conditioner refrigerant leakage detection method comprises the following steps that S1, an air conditioner is started; S2, the air conditioner acquires pre-operation related information, and obtains the pre-operating frequency f0 according to the pre-operation related information; S3, theair conditioner is pre-operated and a compressor is controlled to be operated according to the f0; S4, after the air conditioner is pre-operated for the duration t1, the pressure of a suction pipe ofthe compressor is sampled; S5, the air conditioner judges whether the changing amount or the changing rate of the pressure of the suction pipe of the compressor in the preset time is smaller than a first preset value or not, if yes, the refrigerant leakage occurs, and if not, step S6 is carried out; S6, the air conditioner finishes the pre-operation and is operated according to a preset mode; S7,after the air conditioner is operated for the duration t2, the supercooling degree T0 of a condenser is obtained; and S8, the air conditioner judges whether the T0 is smaller than a second preset value or not, if yes, the refrigerant leakage occurs, and if not, the air conditioner continues operating according to a preset mode. According to the air conditioner refrigerant leakage detecting method, the accuracy of the air conditioner on the refrigerant leakage detection is effectively improved, and the occurrence of the misjudgment condition is avoided.

Description

technical field [0001] The invention relates to the technical field of air conditioners, in particular to an air conditioner and an air conditioner refrigerant leakage detection method. 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 use tempe...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F24F11/86F24F11/64F24F11/65F24F11/38
CPCF24F11/38F24F11/64F24F11/65F24F11/86
Inventor 白韡许真鑫
Owner AUX AIR CONDITIONING LTD BY SHARE LTD