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Detection method and system for leakage of refrigerant of air conditioner

A technology of refrigerant leakage and detection method, which is applied to heating and ventilation control systems, heating and ventilation safety systems, and control inputs involving air characteristics, etc. To achieve the effect of simple structure, improve reliability and reduce data transmission

Active Publication Date: 2016-08-24
WUHU MATY AIR CONDITIONING EQUIP CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Insufficient amount of refrigerant will degrade the performance of the air conditioner, making the compressor run in a poor condition, and even damage the compressor in severe cases.
[0003] The related technology discloses a detection method and system for air-conditioning refrigerant leakage (publication number: CN104296946A). A temperature-sensing package is added to the suction port of the compressor, the indoor heat exchanger and the outdoor heat exchanger respectively. Temperature and according to various comparison steps to detect the refrigerant mass flow rate in the air conditioning system, although the phenomenon of refrigerant leakage can be found in time, but there are many detection steps and transmission data, which is prone to detection failures

Method used

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  • Detection method and system for leakage of refrigerant of air conditioner
  • Detection method and system for leakage of refrigerant of air conditioner
  • Detection method and system for leakage of refrigerant of air conditioner

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Embodiment 1

[0090] Such as Figure 5 As shown, the air conditioner in the embodiment of the present invention is a fixed-frequency air conditioner, and a temperature detection device and a pressure detection device are provided on the suction pipe of the compressor of the air conditioner.

[0091] Such as figure 1 As shown, the air-conditioning refrigerant leakage detection method of the embodiment of the present invention includes the following steps:

[0092] S10: Obtain the current operating mode of the air conditioner, the current outdoor ambient temperature, and the current indoor ambient temperature.

[0093] S20: Find the normal refrigerant mass flow Q corresponding to the current operating mode, the current outdoor ambient temperature, and the current indoor ambient temperature from the pre-storage relational expression. Corresponding relationship of those.

[0094] S30: After the air conditioner runs for the first predetermined time, obtain the current compressor suction tempe...

Embodiment 2

[0106] Such as Figure 5 As shown, the air conditioner in the embodiment of the present invention is an inverter air conditioner, and a temperature detection device and a pressure detection device are provided on the suction pipe of the compressor of the air conditioner.

[0107] Such as image 3 As shown, the air-conditioning refrigerant leakage detection method of the embodiment of the present invention includes the following steps:

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Abstract

The invention discloses a detection method and system for leakage of a refrigerant of an air conditioner. The detection method comprises the steps of S10, acquiring the current running mode of the air conditioner, the current temperature of the outdoor environment and the current temperature of the indoor environment; S20, searching the normal refrigerant mass flow rate Q; S30, acquiring the current suction temperature tsuction and the suction pressure Psuction of a compressor; S40, searching the current suction specific volume Vsuction of the compressor; S50, calculating the current refrigerant mass flow rate QM; S60, judging whether the current refrigerant mass flow rate QM is smaller than the normal refrigerant mass flow rate Q; S70, if QM is smaller than Q, calculating the decrease percentage eta according to the formula that eta equals to (Q-QM) / Q%; and S80, comparing the eta with a preset percentage threshold value X. According to the detection method for leakage of the refrigerant of the air conditioner, the detection steps are decreased, the transmitted data is decreased, and accordingly detection faults are avoided, and the method is simple and reliable.

Description

technical field [0001] The invention relates to the technical field of refrigerant leakage, in particular to a detection method and system for air-conditioning refrigerant leakage. Background technique [0002] During the installation process and long-term use of the air conditioner, the pipeline may leak refrigerant due to poor sealing, bending or long-term corrosion. 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, causing the compressor to run in a poor condition, and even damage the compressor in severe cases. [0003] The related technology discloses a detection method and system for air-conditioning refrigerant leakage (publication number: CN104296946A). A temperature-sensing package is added to the suction port of the compressor, the indoor heat exchanger and the outdoor heat exchanger respectively. Temperature and according to various ...

Claims

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Application Information

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IPC IPC(8): F24F11/00
CPCF24F11/30F24F11/52F24F11/62F24F11/64F24F2110/00F24F2110/10F24F2110/12F24F2140/12F24F2140/20
Inventor 李庭欣
Owner WUHU MATY AIR CONDITIONING EQUIP CO LTD
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