Simple device for detecting magnetic flux, and technology for detecting magnetic flux

Abstract

The invention relates to the field of compressor detection, and specifically discloses a simple device for detecting a magnetic flux, and a technology for detecting the magnetic flux. The device comprises a rack, and the rack is provided with a clamping module and a detection module, and also comprises a drive module which drive the clamping module and the detection module to move mutually. The clamping module comprises a pump body positioning clamping tool, and a compression assembly which is set around the pump body positioning clamping tool. The detection module comprises a standard magnetism measurement coil and a signal processing unit which is electrically connected with the standard magnetism measurement coil. After a rotor and a pump body are assembled and before the assembly of ahousing, the device provided by the invention performs the detection of the magnetic flux, and the operation of parts is simple and convenient, and does not affect the assembly process of the pump body.

Description

technical field [0001] The invention relates to the field of compressor detection, in particular to a simple magnetic flux detection device and a magnetic flux detection process. Background technique [0002] With the warming of the global climate and people's requirements for improving the quality of life, refrigeration technology has been more and more widely used in people's lives. The compressor is the heart of the refrigeration system, and the variable frequency motor is the power source of the compressor. The magnetic flux of the inverter air conditioner compressor motor has a great influence on the performance of the compressor. Therefore, it is necessary to detect the magnetic flux of the compressor motor. In the usual sense, the motor magnetic flux detection is mainly for the motor rotor. [0003] Such as figure 1 As shown, the compressor is mainly composed of several parts such as the pump body, the casing and the rotor. When the compressor is assembled, the roto...

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Problems solved by technology

However, due to the interference fit between the rotor and the shaft of the pump body, the thermal expansion process is often used in the assembly process of the rotor. After the rotor assembly is tested, it will have a strong magnetism, and heating will cause demagnetization. Therefore, after adopting this detection process, the rotor Only cold assembly processes such as knocking can be performed, which greatly increases the difficulty of assembly

In addition, in the process of assembling the rotor assembly with the pump body, it is inevitable that foreign matter will be absorbed, which will have a fatal impact on the performance of the compressor.

[0006] 2. After the compressor is assembled, the magnetic flux detection is carried out. Although this detection method solves various problems in the first detection method, because the coil of the compressor motor is usually used for detection in the detection method, the magnetic flux is detected during the inspection. The instrument needs to be connected to the assembled compressor coils one by one, which will cause certain damage to the compressor coil plug, causing quality problems, and because the number of turns and specifications of different coils of the motor may be different, the processing of the test results is more complicated. There are more types of testing equipment

At the same time, after the whole machine is assembled, once the magnetic flux is detected as unqualified, the compressor cannot be repaired, and the whole machine can only be scrapped, which is not conducive to reducing production costs

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