Intelligent butterfly valve driven by brushless motor

Abstract

The invention discloses an intelligent butterfly valve driven by a brushless motor. The intelligent butterfly valve comprises a valve seat. A gas channel is arranged in the valve seat. A round valve block is arranged at the throat position of the gas channel through a rotary shaft. A drive motor is arranged on the other side of the valve seat. A position detection chip for monitoring the positionof the drive motor is further arranged on the valve seat. The drive motor is the brushless motor. A gear and magnetic steel are mounted on an output shaft of the brushless motor. The position detection chip is mounted on a PCB assembly over the magnetic steel in an attached manner. The gear and the rotary shaft are connected through a reduction mechanism. A control module for controlling the brushless motor to achieve phase changing is further arranged on the PCB assembly. The input end of the control module is connected with the output end of the position detection chip, and the output end ofthe control module is connected with the controlled end of the brushless motor. According to the intelligent butterfly valve, the brushless motor serves as a power source, the requirement that drivecan be achieved only through a CAN bus is achieved, structural design difficulty is greatly reduced, product reliability is increased, and the service life of products is prolonged.

Description

technical field [0001] The invention relates to the technical field of auto parts, in particular to an intelligent butterfly valve. Background technique [0002] With the upgrading of emission regulations, the control system puts forward higher requirements for the response speed and precision of the actuators. DC brushed motors have become the first choice for various actuator power sources due to their small size, simple structure, and simple control. However, the brushed DC motor has a fatal shortcoming: due to the use of brushes for commutation, the brushed motor has mechanical wear and generates a large amount of heat, resulting in a decrease in output efficiency, which seriously limits the service life of the brushed DC motor. In the medium-to-heavy truck market, the demand for ultra-long service life makes the products driven by DC brush motors unable to match. [0003] In the increasingly complex development environment of vehicle electrical components, intelligent ...

AI Technical Summary

Problems solved by technology

However, the brushed DC motor has a fatal shortcoming: due to the use of brushes for commutation, the brushed motor has mechanical wear and generates a large amount of heat, resulting in a decrease in output efficiency, which seriously limits the service life of the brushed DC motor. In the market of medium and heavy trucks, the demand for ultra-long service life makes the products driven by DC brush motors unable to match

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