GEAR MEASURING AND COMPARING CHARACTERISTICS OF FAN Russian patent published in 1999 - IPC

FIELD: measurement technology. SUBSTANCE: invention is intended for measurement and comparison of various characteristics of fan driven by unit of power generation. Gear includes unit of power generation that rotates fan. Body where unit of power generation is installed has suction hole and exhaust hole to discharge air coming through suction hole. Bearing unit is mounted in body and is used as base for unit of power generation. Protective unit whose front surface has hole for suction of air is meant to protect fan against breakdown. Unit measuring rarefaction is placed in body to measure rarefaction depth. Unit controlling blasting volume is intended to control exhaust branch pipe of body and keep optimal rarefaction in it. Unit measuring rotation is designed to measure speed of rotation of rotation unit mounted on unit of power generation. Turning table is set in body to measure torque. Technical result of invention consists in formation of system of comparable measurement of operation indices of fan fitted with motor used, for instance, in vacuum cleaners to work out more effective design of fan. EFFECT: design of more effective fans for vacuum cleaners. 8 cl, 6 dwg