Stall vibration protection device for axial flow fan

Abstract

The invention relates to the technical field of electromechanical machinery, and discloses a stall vibration protection device for an axial flow fan. The stall vibration protection device comprises a shell, wherein a fixing frame is fixedly connected to the interior of the shell, a fixing frame is fixedly connected to the interior of the fixing frame, clamping teeth are movably connected to the middle of the front face of the fixing frame, fan blades are fixedly connected to the back faces of the clamping teeth, a filter screen is movably connected to the back faces of the fan blades, a contact rod is fixedly connected to the outer wall of the filter screen, a piezoelectric crystal is fixedly connected to the position, close to the outer wall of the contact rod, in the shell, and a buffer spring is fixedly connected to the outer wall of the filter screen. According to the stall vibration protection device for the axial flow fan, the fan blades vibrate to drive the filter screen to vibrate, the filter screen drives the contact rod to vibrate, the contact rod vibrates to enable the piezoelectric crystal to be continuously deformed to generate electric charges, a brake rod is driven to contract, the brake rod drives a damper brake to clamp a brake disc, then the brake disc and the fan blades are used in cooperation, and therefore, the speed reduction effect is achieved.

Description

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine

Login to View More

AI Technical Summary

Benefits of technology

This invention relates to an apparatus that prevents damage caused during engine startups or when there are sudden changes in power supply due to factors like fluctuations from wind speed. It includes two main components: 1) An airflow fan system for cooling down exhaust gas; 2) A sensor called a strain gauge used to detect if something has happened (such as foreign objects). When this happens, it sends signals to a controller where they control the rotation of certain parts within the machine. These movements help prevent excessive wear on these machines while still providing effective coolant systems.

Problems solved by technology

This patented technical solution describes how conventional axial-flow fans can be affected by issues like excessive noise caused when they rotate at high speeds due to insufficient clearance between different parts inside them. To address this issue, there have been proposals involving adding flaps with holes near certain points along its length to prevent these areas from getting dirty quickly without affecting their effectiveness.

Images