MOTOR-DRIVEN BLOWER

• Main Authors: FUKUMOTO MASAMI, YAMAURA IZUMI, SASAHARA FUMIHIKO
• Format: Patent
• Language: English
• Published: 26.02.1992
• Subjects: BLASTING; COFFEE MILLS; DOMESTIC ARTICLES OR APPLIANCES; DOMESTIC WASHING OR CLEANING; FURNITURE; HEATING; HUMAN NECESSITIES; LIGHTING; MECHANICAL ENGINEERING; NON-POSITIVE DISPLACEMENT PUMPS; POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS; SPICE MILLS; SUCTION CLEANERS IN GENERAL; WEAPONS

PURPOSE:To improve air blowing performance by providing a cone plate-shaped guide vane, having a shape almost similar to an external shape of an inducer, in an inlet of an impeller so as to make a direction of an air flow changeable smoothly from the axial direction to the peripheral direction. CONSTITUTION:A casing 1 has a suction air hole 2 in the center, and an opposite side of the suction air hole 2 is mounted to a motor frame 4 of a motor 3. A centrifugal type impeller 5, having a plurality of sheets of blades 6, is housed in this casing 1, and an air guide 7 is provided positioned in a lower part of the impeller 5. A diffuser 8, formed of the casing 1 and the air guide 7, is arranged so as to provide a passage spread toward the periphery, and a return passage 9 is formed connected smoothly independently to the final end of the diffuser 8. Here, a cone plate-shaped guide vane 14, which feeds air to the impeller 5 changing a direction of a flow gradually from the axial direction to the radial direction, is mounted to an internal peripheral part of the impeller 5 and tightened with an inducer 16 to a shaft 15 of the motor 3.