A speed measuring device for a swash plate compressor

Abstract

The invention discloses a speed measuring device of a tilting frame type compressor. The speed measuring device is installed on the compressor which is provided with a pump body, a piston, a main shaft and a tilting frame which is fixedly arranged on the main shaft. The starting end of the piston is provided with a ball socket. The speed measuring device comprises a half ball arranged inside the ball socket and a speed measuring component located on the pump body, the speed measuring component is arranged corresponding to the starting end of the piston, and the output end of the speed measuring component is electrically connected with a controller. Due to the fact that the pump body is provided with the speed measuring component, the piston does vertical reciprocating movement one time when the main shaft drives the tilting frame to rotate by one circle, and the half ball moves to the highest point from the lowest point and then to the lowest point. The speed measuring component determines the rotating speed of the main shaft by detecting the position of the half ball, the rotating speed of a main shaft tilting frame system is effectively detected, a rotating speed signal is compared with a set signal so that the rotating speed can be adjusted in time, the equipment failure is avoided, the compressor can run normally, the using, maintaining and replacing cost is reduced, tapping, magnet press-fitting and other working procedures are not needed to be carried out on the tilting frame, the assembling working procedure is simple, and treatment can be carried out conveniently.

Description

technical field [0001] The invention relates to a speed measuring device, in particular to a speed measuring device for a swash plate type compressor. Background technique [0002] In the automobile air-conditioning refrigeration system, two-way piston swash plate and variable displacement swash plate compressors are widely used. When the compressor is working, whether the compressor's speed is normal or not has a crucial impact on the refrigeration system. [0003] The speed measuring method of the existing two-way piston swash plate type automotive air-conditioning compressor is mainly to drill holes on the side of the main shaft swash plate, and then press the magnet into the hole on the side of the swash plate with interference, and the speed switch is installed on the cylinder wall. When the swash plate rotates once, the speed switch senses the magnet once. However, the method of pressing the magnet in after opening a hole on the swash plate is expensive, and the proces...

AI Technical Summary

Problems solved by technology

[0005] In order to solve the traditional speed measurement method, the magnet is mainly pressed in after opening a hole on the swash plate. The cost is high, and the processing and assembly process is complicated. Once a problem occurs, it is difficult to disassemble and replace the magnet, and the cost of use is high.

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