Constant-pressure variable intelligent air compressor

Abstract

The invention relates to a constant-pressure variable intelligent air compressor, which comprises an electric motor and a compressor host, wherein the electric motor is a rare earth permanent magnet synchronous motor, a motor shaft of the rare earth permanent magnet synchronous motor and a male rotor shaft of a male rotor form an integrated structure, and the motor shaft is formed by extending the male rotor shaft into a shell of the electric motor; the air compressor further comprises a frequency converter, an intelligent controller, a pressure transmitter and a temperature sensor; he output end of the intelligent controller is connected with the electric motor through the frequency converter, and is connected with the compressor host through a loading and unloading electromagnetic valve; the pressure transmitter and the temperature sensor are respectively arranged on an exhaust port and a compressed air inlet of the compressor host, and the output end of the pressure transmitter and the output end of the temperature sensor are respectively connected with the input end of the intelligent controller. According to the invention, the volume, the weight and the loss of the air compressor are remarkably reduced, heating is reduced, and efficiency is improved, and actions, such as soft start, constant-pressure air supply, noise reduction, energy conservation and the like, can be realized.

Description

Technical field [0001] The invention relates to an air compressor, in particular to a constant pressure variable intelligent air compressor that adopts an intelligent controller to control the operating state. Background technique [0002] Traditional compressors are usually driven by asynchronous motors. The asynchronous motors drive the compressor host through belt drive or gear drive. The disadvantages of this driving method are: high energy consumption, low efficiency, and large overall dimensions. In addition, the asynchronous motor adopts YS step-down start, which has a relatively large impact on the grid and the entire mechanical system when starting; because the compressor is fixed at 50HZ power frequency operation, the motor runs at high speed for a long time, and the noise is relatively large, and When the unloading ratio is relatively large, there is a serious waste of electric energy. Summary of the invention [0003] In view of the above-mentioned problems, the pres...

AI Technical Summary

Problems solved by technology

The disadvantages of this driving method are: high energy consumption, low efficiency, and large overall size

In addition, the asynchronous motor is started by Y-S step-down, which has a relatively large impact on the power grid and the entire mechanical system when starting; since the compressor is fixed at 50HZ power frequency operation, the motor runs at high speed for a long time, and the noise is relatively large, and the increase When the unloading ratio is relatively large, there is a serious waste of electric energy

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