ROTARY BRUSH STRUCTURE OF SUCTION INLET BODY FOR VACUUM CLEANER

摘要

PURPOSE: A rotary brush structure makes air passing through a blast fan move in a fixed space to be discharged through a discharging outlet to prevent the performance of the blast fan from falling by the sudden expansion of a discharging space. CONSTITUTION: An air discharging device comprises a dust collecting space(110), a suction force generating space, a communicating flow passage(160) and a flow passage guide(141). The dust collecting space(110) has a dust bag(120) to collect foreign matters. The suction force generating space has a blast fan(140) rotating by driving force transmitted from a motor to generate suction force. The communicating flow passage(160) makes the dust collecting space(110) and the suction force generating space communicate with each other. The flow passage guide(141) is installed to cover the circumference of the blast fan(140) which is the air discharging side of the communicating flow passage(160) to guide moving direction of air flowing in to the blast fan(140) to be focused to the tangent line thereof and directly discharged. As the inner shape of a fan housing(141) is of scroll, air moving inside the fan housing(141) smoothly moves without sudden resistance due to the change of the flow passage space.