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Method and device for testing fault of internal motor of compressor

A technology for internal faults of compressors, which is applied in the field of inspection of internal motor faults of compressors, and can solve problems such as high testing costs, insufficient effectiveness, and low testing efficiency

Active Publication Date: 2019-09-27
GREE ELECTRIC APPLIANCES WUHAN +1
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  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, the ignition problem of the internal motor of the compressor material is prominent after the sale. The following two methods are usually used for inspection during the factory inspection: 1. Use a low-resistance tester to test the resistance of the main and auxiliary phases of the compressor terminals. This method can pass Measure the resistance of the winding to check whether the motor is faulty, but the damage point of the internal winding of the motor cannot be found, so the effectiveness of the test is insufficient; 2. For the case of internal motor faults, it is necessary to dissect the shell of the compressor and use high voltage to check the damage point of the motor , which is destructive, the test cost is high and the test efficiency is low

Method used

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  • Method and device for testing fault of internal motor of compressor
  • Method and device for testing fault of internal motor of compressor
  • Method and device for testing fault of internal motor of compressor

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Embodiment Construction

[0042] combine Figure 1-Figure 12 , the present embodiment discloses a method and equipment for checking internal motor faults of a compressor, wherein the equipment to be used mainly includes a coil pulse interlayer tester, connecting wires and a compressor to be tested.

[0043] Such as figure 2 As shown, the coil pulse interlayer tester is respectively connected to the three phases of the motor coil through the high voltage test line (the interface is T1, T2 and T3), and connected to the iron core of the motor through the interface E.

[0044] Such as image 3 As shown, the display 1 on the front panel of the coil pulse interlayer tester is a liquid crystal display touch screen, which displays the test waveform and the standard waveform and puts them at the same starting point for comparison. The standard waveform is blue, and the test waveform is red. If the test waveform is the same as the standard waveform, the judgment result is a good product, and the display 1 dis...

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Abstract

The invention relates to a method for testing the fault of the internal motor of a compressor. The method comprises the following steps that: a motor rotor position is calculated; the motor rotor position is compensated through a compensation algorithm; the waveform diagram of a to-be-tested motor is generated based on the compensated motor rotor position; the waveform of the coil of the to-be-tested motor is displayed, the test waveform is compared with a standard waveform; and a motor fault condition is judged according to a waveform comparison result. The invention further discloses a device for testing the fault of the internal motor of a compressor. With the method and device of the invention adopted, the fault condition of the internal motor can be obtained with destructive measurement not need to be performed on the compressor.

Description

technical field [0001] The invention relates to the field of motor fault detection, in particular to a method and equipment for detecting motor faults inside a compressor. Background technique [0002] At present, the ignition problem of the internal motor of the compressor material is prominent after the sale. The following two methods are usually used for inspection during the factory inspection: 1. Use a low-resistance tester to test the resistance of the main and auxiliary phases of the compressor terminals. This method can pass Measure the resistance of the winding to check whether the motor is faulty, but the damage point of the internal winding of the motor cannot be found, so the effectiveness of the test is insufficient; 2. For the case of internal motor faults, it is necessary to dissect the shell of the compressor and use high voltage to check the damage point of the motor , which is destructive, the test cost is high and the test efficiency is low. There is ther...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R31/34
CPCG01R31/343
Inventor 陆用吴天武罗兴涛刘爽
Owner GREE ELECTRIC APPLIANCES WUHAN
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