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Electric air blower and electric dust collector provided with the same

A blower, electric motor technology, applied in the direction of machines/engines, liquid fuel engines, parts of pumping devices for elastic fluids, etc., can solve the problems of inability to ensure the area of ​​the curved part, the performance of the electric blower is reduced, etc., and achieve high energy loss. Efficiency, less energy loss, the effect of realizing the performance

Active Publication Date: 2015-05-20
HITACHI APPLIANCES INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In such an electric blower, if the thick blade diffuser described in Non-Patent Document 1 is used, since the maximum thickness of the blade is located on the outer diameter side of the overlapping portion, the area of ​​the curved portion cannot be ensured. amount, the performance of the electric blower may be degraded due to the increased loss of the bending part

Method used

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  • Electric air blower and electric dust collector provided with the same
  • Electric air blower and electric dust collector provided with the same
  • Electric air blower and electric dust collector provided with the same

Examples

Experimental program
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Embodiment Construction

[0030] Hereinafter, one embodiment of the present invention will be described using the drawings.

[0031] First, use figure 1 The overall structure of the electric vacuum cleaner will be described. in from figure 1 The structure of the vacuum cleaner main body 100 is demonstrated in the cross-sectional view seen from the upper side of the vacuum cleaner main body 100 shown schematically. If the side of the vacuum cleaner body 100 on which the hose connector 101 is mounted is defined as the front side of the vacuum cleaner body 100 , the front end of the vacuum cleaner body 100 has a detachable hose connector 101 .

[0032]On the front side of the electric vacuum cleaner main body 100, there is a dust collection chamber 102 for holding the paper bag 103; There is a filter part 104 for suppressing the dust in the dust collecting chamber 102 from flowing into the motor chamber 105 between them. The dust collection chamber 102 communicates with the motor chamber 105 via the f...

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PUM

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Abstract

The invention provides an electric air blower and an electric dust collector provided with the same. The invention aims at providing an electric air blower and an electric dust collector provided with the same advantageous in that, even under the condition that an electromotor is provided at the downstream of the electric air blower, and the air stream of the air blower is used for cooling the electromotor, high efficiency is provided. The electric air blower is characterized in that, the thickness of each diffusion blade (301) disposed on a diffuser (300) is made in a way that, the inner periphery of each diffusion blade (301) to the outer periphery is from thickening to thinning, making the position (313) of the largest blade thickness be in an adjacent joint with the outlet throat portion (303) of an overlapping portion (304).

Description

technical field [0001] The invention relates to an electric blower and an electric vacuum cleaner equipped with the electric blower. Background technique [0002] As an electric blower used in an existing electric vacuum cleaner, for example, as shown in Patent Document 1, the electric blower has an electric motor; a centrifugal impeller coaxial with the rotating shaft of the electric motor; between the electric motor and the centrifugal impeller, the centrifugal impeller There are diffuser blades on one side, and a diffuser with return flow drainage blades on the opposite side of the centrifugal impeller; a fan casing with a centrifugal impeller and a diffuser inside; The space between the flow passages of the diffuser blade, and the partition plate separating the diffuser vane side from the return flow guide vane side is formed with a flow channel that becomes a recess, and the recess is cut inward from the outer peripheral end of the diffuser blade along the surface of th...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F04D29/44
Inventor 本多武史坂上诚二常乐文夫大平房德原田秀行
Owner HITACHI APPLIANCES INC
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