| 摘要 |
PURPOSE: A centrifugal blower used in a vacuum cleaner is provided to reduce noise, to uniform airflow, and to increase blowing efficiency by installing a mesh between diffusers in order to disperse a secondary airflow laminated from a blade, and to introduce into the diffuser side. CONSTITUTION: An impeller(54) for absorbing air is installed rotatably at inside of an impeller cover(52), and an inlet(52a) is formed at one side of the impeller cover. The impeller(54) consists of an upper cover(54d) of a circular plate, a lower cover(54e), and a plurality of blades(54c). The blade(54c) and a plurality of diffuser(56) are installed at an outer circumference of the impeller. A guide vane(58) for guiding air blown by the diffuser into the motor side is formed integrally at the lower end of the diffuser. A guide vane(58) for guiding air blown by the diffuser into the motor side is formed integrally at the lower end of the diffuser. A dispersing device is installed between the diffusers in order to disperse air passed through the impeller into the diffuser side. The dispersing device is a mesh.
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