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Dust flocculating passage, dust flocculating method, and vacuum cleaner

A dust and flow path technology, applied in suction filters, separation methods, external electrostatic separators, etc., can solve the problems of complex structure, particle accumulation, increased occupation area, etc., and achieve the effect of increasing the probability of collision

Inactive Publication Date: 2009-09-09
SHARP KK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, if one suction port is branched in the middle, accumulation of fine particles is likely to occur at the branched part
If this problem can be avoided by changing the number of suction ports to two, the distance between each suction port must be increased, which not only increases the occupied area, but also complicates the structure

Method used

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  • Dust flocculating passage, dust flocculating method, and vacuum cleaner
  • Dust flocculating passage, dust flocculating method, and vacuum cleaner
  • Dust flocculating passage, dust flocculating method, and vacuum cleaner

Examples

Experimental program
Comparison scheme
Effect test

Embodiment approach 1-1

[0238] Figure 5 It is a figure which shows the dust aggregation path of Embodiment 1-1 of this invention.

[0239] Such as Figure 5 As shown, the dust aggregation passage 10 includes a flow passage 11, a wall 12, and a rotating portion 13 as a vortex generating mechanism. The flow path 11 is formed by a cylindrical wall 12 . Air or other fluid containing agglomerated particles (dust or other fine particles) flows through the flow path 11 driven by an unillustrated drive source (for example, a fan or blower).

[0240] Figure 6 It is a figure which shows the front of the dust aggregation path of Embodiment 1-1 of this invention.

[0241] Such as Figure 5 and Figure 6 As shown, the rotating part 13 includes four surfaces as a wall part of the rotating part 13 : a surface 13 a , a surface 13 b , a surface 13 c , and a surface 13 d. The surface 13 a , surface 13 b , surface 13 c , and surface 13 d are arranged at intervals of 90° counterclockwise when viewed from the up...

Embodiment approach 1-2

[0267] Figure 9 It is a perspective view which shows the main part of a dust aggregation path as Embodiment 1-2 of this invention.

[0268] Such as Figure 9 As shown, the dust aggregation path 20 includes a flow path 21, a wall 22, and a rotating portion 23 as a vortex generating mechanism. The flow path 21 is formed by a cylindrical wall 22 .

[0269] Figure 10 It is a figure which shows the front of the dust aggregation path of Embodiment 1-2 of this invention.

[0270] Such as Figure 9 and Figure 10 As shown, the rotation part 23 includes four surfaces as a wall part of the rotation part 23 : a surface 23 a , a surface 23 b , a surface 23 c , and a surface 23 d. The surface 23 a , surface 23 b , surface 23 c , and surface 23 d are arranged at intervals of 90° counterclockwise when viewed from the upstream side of the flow path 21 . The respective surfaces are formed perpendicularly to the inner surface of the wall 22, are connected to each other at the center of...

Embodiment approach 1-3

[0287] Figure 12 It is a perspective view which shows the main part of the dust aggregation path of Embodiment 1-3 of this invention.

[0288] Such as Figure 12 As shown, in Embodiment 1-3, a rotating portion 33 is provided instead of the rotating portion 13 in Embodiment 1-1. Rotating part 33 becomes the shape that cuts through the center of the cross section of rotating part 13, so there is rotating part 33 on the inner surface of wall 32 of flow path 31 formed in dust condensing path 30, and there is no central part of flow path 31. There is a shape of the rotating part 33 . The flow path 31 is divided into four small flow paths by the rotating part 33 . Four small channels communicate at the center of the channel 31 .

[0289] Figure 13 It is a front view which shows the main part of the dust aggregation path of Embodiment 1-3 of this invention.

[0290] Such as Figure 13 As shown, for the height h calculated from the inner surface of the wall 32 of the rotating...

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Abstract

The present invention provides a dust flocculating passage, which is enabled with a simple structure to promote the flocculation of particles in dust by increasing the number of particle collisions, thereby to reduce the particle number and to enlarge the apparent particle diameter, and a dust flocculating method and a vacuum cleaner. The dust flocculating passage (10) comprises a passage (11) for a gas to pass therethrough, a wall (12) for forming the passage (11), and vortex generating means for generating vortexes in the gas flowing in the passage (11). The vortex generating means is so arranged on the inner face of the wall (12) as to give a heterogeneous velocity distribution to the gas flow near the wall (12). The vortex generating means includes either a turning portion (13) having a wall portion protruding from the inner face of the wall (12) into the passage (11) so as to turn the gas flow in the passage (11), or protrusions from the inner face of the wall (12) so as to make heterogeneous the velocity of the passing gas.

Description

technical field [0001] The present invention relates to a dust condensing passage, a dust condensing method, and an electric vacuum cleaner for condensing dust by flowing gas containing dust. Background technique [0002] Conventionally, as an example in which protrusions are provided on the inner wall surface of a pipe through which dust-containing gas flows, there is an extension pipe for a vacuum cleaner described in JP-A-2002-320578 (Patent Document 1). The purpose is to increase the speed of the air flow near the inner wall surface of the extension pipe by providing a guide vane as a speed-increasing mechanism near the inlet of the extension pipe connected to the vacuum cleaner body via a hose. [0003] In addition, Japanese Patent Application Laid-Open No. 9-131522 (Patent Document 2) describes a mixing element that improves the mixing efficiency of fluids. The purpose of this is to improve the mixing efficiency by providing actions such as positional movement, conflu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A47L9/16B03C3/15A47L9/24B03C3/30B01D51/02B03C3/36
CPCA47L9/24B03C3/36B03C3/15B03C3/017B03C3/30B01D45/16
Inventor 加藤康昭大塚雅生友村佳伸北谷和也吉田长司
Owner SHARP KK
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