Centrifugal fan and extractor hood applying same

• Main Author: XU YONGWEN
• Format: Patent
• Language: Chinese; English
• Published: 26.06.2020
• Subjects: BLASTING; DETAILS OF DOMESTIC STOVES OR RANGES, OF GENERAL APPLICATION; HEATING; LIGHTING; MECHANICAL ENGINEERING; NON-POSITIVE DISPLACEMENT PUMPS; OTHER DOMESTIC STOVES OR RANGES; POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS; RANGES; VENTILATING; WEAPONS

The utility model relates to a centrifugal fan and an extractor hood applying the same. The centrifugal fan comprises a motor, a first through hole is formed in the center of the impeller middle disc;the connecting disc is connected with the impeller middle disc, the connecting disc comprises a shaft sleeve part arranged in the first through hole in a penetrating mode and a plate-shaped body extending in the radial direction from the outer circumferential wall of the shaft sleeve part, and the shaft sleeve part is installed on an output shaft of the motor; a second through hole allowing the shaft sleeve part to penetrate through and corresponding to the first through hole is formed in the center of the first gasket, and the first gasket is clamped and fixed between the connecting disc andthe impeller middle disc. The impeller middle disc and the connecting disc are completely isolated by the first gasket; and the contact area between the first gasket and the connecting disc and the impeller middle disc is lar