Electronic oil pressure difference switch

A differential pressure switch, electronic oil technology, applied in electronic switches, circuits, relays, etc., can solve the problems of difficult maintenance and cumbersome installation process, and achieve the effect of convenient installation and easy maintenance.

Pending Publication Date: 2019-05-24
58TH RES INST OF CETC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide an electronic differential oil pressure switch to solve the problems of cumbersome installation and difficult maintenance of traditional mechanical differential oil pressure switches

Method used

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Embodiment 1

[0023] The invention provides an electronic oil differential pressure switch, the structure of which is as follows: figure 1 shown. The electronic oil differential pressure switch includes a casing 1 and a mechanical head 2 connected thereto; wherein, the casing 1 is made of plastic, and a circuit board 11 is arranged in the casing 1, and the circuit board 11 includes a Hall sensor 111 , the Hall sensor 111 is located on the circuit board 11 near one end of the mechanical head 2; one end of the mechanical head 2 is a copper head 21, and a permanent magnet 22 is arranged in the inner cavity of the other end and is connected with the permanent magnet. The magnet 22 is in contact with the spring 23 . The outer surface of the copper head 21 is provided with threads 211, and is installed on the pump casing of the compressor through the threads 211. The Hall sensor 111 is close to the permanent magnet 22, and the Hall sensor 111 can detect when the permanent magnet 22 moves in the...

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Abstract

The invention discloses an electronic oil pressure difference switch, and belongs to the technical field of industrial sensors and refrigeration. The electronic oil pressure difference switch comprises a shell and a mechanical head connected with the shell. Wherein a circuit board is arranged in the shell, the circuit board comprises a Hall sensor, and the Hall sensor is located at the end, closeto the mechanical head, of the circuit board; One end of the mechanical head is a copper head, and a permanent magnet and a spring making contact with the permanent magnet are arranged in an inner cavity of the other end of the mechanical head. The circuit board further comprises a temperature sensor and a micro-control unit. The end face of the copper head is provided with a low-pressure open hole, the outer side face of the copper head is provided with a high-pressure open groove, and two cavities of a tested oil way are connected with the low-pressure open hole and the high-pressure open groove respectively. A separated design structure is adopted, the mechanical head is separated from the shell, installation is convenient, and maintenance is easy; And various parameters can be flexiblyset, so that the device can adapt to various types of oil ways and various pressure ranges.

Description

technical field [0001] The invention relates to the technical field of industrial sensors and refrigeration, in particular to an electronic oil differential pressure switch. Background technique [0002] The electronic oil differential pressure switch is mainly used to detect and control the state of the refrigeration oil in the compressor. Refrigeration oil is crucial to the service life of refrigeration compressors. Proper oil volume and normal oil level can ensure the lubrication of mechanical moving parts in the compressor and the inner surface of the cylinder, so that the compressor can work normally and efficiently. Insufficient oil supply and poor lubrication caused by untimely oil supply will cause compressor and refrigeration system failures. [0003] The traditional mechanical differential oil pressure switch requires a fixed bracket during installation, and needs to connect the capillary to the high and low pressure ports of the oil pump. The installation process...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H03K17/51H01H47/00
Inventor 毛臻
Owner 58TH RES INST OF CETC
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