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Air guide parts of electric blower, electric blower and electric vacuum cleaner

A technology of electric blower and components, which is applied to the components of pumping devices for elastic fluids, machines/engines, liquid fuel engines, etc., which can solve the problems of reduced effect, reduced blower efficiency, noise difference, etc., to achieve suppression of air supply Decrease in performance, reduce fan noise, and reduce noise

Active Publication Date: 2019-06-21
PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, not only the interference reduction effect of the waveform of the sound in the through hole is reduced, but also sometimes amplified, so that the noise cannot be sufficiently reduced in some cases.
[0010] In addition, in the electric blower described in Patent Document 2, air leakage flows from the convex surface side to the concave surface side of all the diffuser guide vanes through the through holes, so the air flow between the air passages of all the diffusers becomes uneven, and Causes a drop in blower efficiency or a difference in noise

Method used

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  • Air guide parts of electric blower, electric blower and electric vacuum cleaner
  • Air guide parts of electric blower, electric blower and electric vacuum cleaner
  • Air guide parts of electric blower, electric blower and electric vacuum cleaner

Examples

Experimental program
Comparison scheme
Effect test

Embodiment approach 1

[0029] figure 1 It is a half cross-sectional view of electric blower 10 in this embodiment. The electric blower 10 includes a motor 20 , a bracket 13 , a centrifugal fan 15 , an air guide member 16 , and a fan case 18 . The cylindrical bracket 13 with one opening is composed of a bracket 13 a holding the motor 20 inside, and a bracket 13 b arranged on the opening side of the bracket 13 a. In addition, an air guide member 16 is fixed to the bracket 13 b so as to close the opening of the bracket 13 . Furthermore, the centrifugal fan 15 is arranged so as to be covered by the fan case 18 on the opposite side of the motor 20 with respect to the air guide member 16 .

[0030] In the electric blower 10 of this embodiment, a commutator motor is used as the motor 20, and the commutator motor includes: a field assembly 21 as a stator, an armature assembly 24 as a rotor, and an armature assembly 24 rotatably holding the armature. A pair of bearings 19 and a brush portion 29 of the ass...

Embodiment approach 2

[0070] Figure 5 It is an external view of the electric vacuum cleaner in Embodiment 2 of this invention.

[0071] Such as Figure 5 As shown, wheels 42 and casters 43 are attached to the outside of the main body 41 of the vacuum cleaner. Thereby, the cleaner main body 41 can move freely on the ground.

[0072] The cleaner main body 41 is sequentially connected to a suction hose 46 and an extension pipe 48 forming a handle 47 to a suction port 45 provided below the cleaner main body 41 . The suction tool 49 is attached to the front end of the extension pipe 48 .

[0073] The electric blower 10 demonstrated in Embodiment 1 is incorporated in the cleaner main body 41. As shown in FIG. The dust collecting case 44 is detachably provided with respect to the cleaner main body 41 . The dust collecting case 44 sucks air containing dust. Thereby, noise can be reduced without increasing the size or weight of the main body. An electric vacuum cleaner ensures a strong suction power...

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Abstract

An electric air blower, an air guide part of the electric air blower and an electric vacuum cleaner. The electric air blower is provided with: a motor including a stator and a rotor and the rotor rotates around a rotation axis; a bracket that holds the stator; and a centrifugal fan that is installed on a rotating shaft; an air guide member disposed between the bracket and the centrifugal fan; and a fan housing having an air suction port in the center and covering the air guide member and the rotating fan. This air guide component includes: a partition that separates the bracket and the centrifugal fan; a diffuser that is provided on the outer peripheral side of the centrifugal fan and has a plurality of diffuser guide blades; and a return blade that is formed on the diffuser via the partition. the back of the device. Furthermore, in this air guide member, the number of diffuser guide blades is an even number, and openings are provided at predetermined positions of the diffuser guide blades in every other diffuser guide blade.

Description

technical field [0001] The invention relates to an electric blower used for electric vacuum cleaners and the like and an air guiding part thereof. Background technique [0002] In recent years, in an electric vacuum cleaner using an electric blower, the body of the vacuum cleaner has been downsized, and as a result, the space for soundproofing measures inside the body has decreased. Therefore, there is an increasing need to minimize the sound generated from the electric blower itself. [0003] In the electric blower used in the electric vacuum cleaner, the centrifugal fan is rotated at a high speed, thereby sucking in the air, and after boosting the pressure, the air guide member having a plurality of diffuser guide vanes provided on the outer peripheral side of the centrifugal fan is used to control the pressure. recover. Then, the sucked air is discharged to the outside of the electric blower while cooling the parts inside the motor. [0004] Here, the airflow discharge...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F04D29/44
CPCF04D29/444
Inventor 山口明藤田克敏
Owner PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO LTD