A device and method for detecting micro-leakage of a scroll air-conditioning compressor
An air-conditioning compressor and scroll-type technology, which is applied in the field of devices for detecting micro-leakage of scroll-type air-conditioning compressors, can solve problems such as low efficiency, large equipment investment, and long detection time, and achieve easy portability and small capital investment in equipment , the effect of simple structure
Active Publication Date: 2020-09-29
SHANGHAI UNIV OF ENG SCI
View PDF6 Cites 0 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
[0004] Among the above methods, the water detection method is observed by the naked eye of the technician, which is misjudged and inefficient due to the influence of the environment and the working attitude of the technician; Helium detection can accurately detect small leaks, but the equipment investment is large and the detection time is long, and the residual inert gas in the equipment cannot be removed, which will affect the accuracy to a certain extent
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0041] In order to make the technical means, creative features, goals and effects achieved by the present invention easy to understand, the present invention will be further described below in conjunction with specific embodiments.
[0042] see Figure 1 to Figure 6, a device for detecting tiny leaks of a scroll air conditioner compressor according to the present invention, comprising a sound absorbing box (1), and the interior of the sound absorbing box (1) is provided with a compressor for placing a scroll air conditioner compressor to be detected. machine (2), and some ultrasonic receivers (3) for detecting the ultrasonic signals sent by the scroll air conditioner compressor (2), the output of the ultrasonic receiver (3) is connected with a data acquisition Card (5) is connected, and data acquisition card (5) is connected with computer (6) by USB interface;
[0043] The sound-absorbing sound box (1) includes a sound-absorbing sound box body (10) and a sound-absorbing sound...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
Login to View More Abstract
The invention discloses a device and a method for detecting micro leakage of a scroll air conditioner compressor. The device comprises a sound absorbing box. A cavity for placing a to-be-detected scroll air conditioner compressor and a plurality of ultrasonic wave receivers for detecting ultrasonic wave signals sent by the scroll air conditioner compressor are arranged in the sound absorbing box.The ultrasonic wave receivers are connected to a data acquisition card, and the data acquisition card is connected to a computer through a USB interface. As the scroll air conditioner compressor is filled with nitrogen, the internal pressure of the scroll air conditioner compressor is greater than the external pressure. If a leak hole is available in the scroll air conditioner compressor, nitrogenwill rush out from the leak hole. When the size of the leak hole is relatively small and the Reynolds number is relatively high, gas rushed out will form a turbulent flow which generates sound wavesnear the leak hole. When the leak hole is very small and the sound wave frequency is smaller than 20 kHz, no-load ultrasonic waves are generated. The no-load ultrasonic waves are received by the fourultrasonic wave receivers and are sent to the data acquisition card and the computer through data lines and the position of the leak hole is calculated by a computer.
Description
technical field [0001] The invention relates to the technical field of leakage detection, in particular to a device and method for detecting tiny leakage of a scroll air conditioner compressor. Background technique [0002] The scroll air conditioner compressor has the characteristics of simple structure, small size, light weight, high reliability, and high efficiency within the range of cooling capacity it adapts to, so it has a wide range of applications. [0003] When the scroll air conditioner compressor has a low cooling capacity coefficient of performance, it is usually considered that the scroll compressor has leaked. Currently, there are water detection method, smear method and helium detection method for the scroll compressor leak detection method. Law. The water detection method is to cover the inlet and outlet cover plates of the scroll compressor first, then fill the scroll compressor with nitrogen, and then put the scroll compressor into the water tank to obser...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More Patent Type & Authority Patents(China)
IPC IPC(8): F04C28/28F04C18/02
CPCF04C18/02F04C28/28F04C2270/86
Inventor 马其华周琪
Owner SHANGHAI UNIV OF ENG SCI