Blower

Abstract

A blower having a turbo fan is installed in a scroll housing with a cutoff. The cutoff has an inclination angle of approximately 50 to 80 DEG , so that it is possible to draw in an increased amount of air while reducing the flow resistance of air. Accordingly, blowing efficiency is improved while simultaneously reducing the generation of noise and vibration.

Description

technical field [0001] The present invention relates to a blower installed in household appliances such as air conditioners and cleaning machines to inhale and discharge air, in particular to setting a turbo fan in a volute and increasing the inclination angle of the cut-off part of the volute so as to improve the blowing performance , to reduce the noise of the blower. Background technique [0002] Blowers according to the prior art such as figure 1 and figure 2 As shown, it generally consists of an impeller 1 called a Sirocco fan and a volute 2 that guides the air sucked in by the impeller 1 to be discharged at an exhaust port 26 . [0003] The impeller 1 is composed of a plurality of blades 1a supported by ribs 1b. Since the shaft 11 of the impeller 1 is connected to the driving part of the motor M, while the impeller 1 rotates, the air is sucked into the volute 2 through the suction port 24 formed in front of the volute 2 and guided by the bell...

AI Technical Summary

Problems solved by technology

[0008] However, according to the blower of the prior art, since the impeller 1 called a Sirocco fan is installed inside the volute 2, there is a limit to increasing the blowing volume, and the cut-off portion 3 formed on the volute is limited. Tilt angle θ 1 An angle of 50° or less is formed from the impeller shaft 11, and as a result, the air flow resistance through the funnel portion 2b increases, resulting in low blowing efficiency and increased noise.

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