JP5220831B2 - Electric vacuum cleaner - Google Patents

Description

  The present invention relates to a vacuum cleaner used in, for example, a general household.

  Conventionally, as electric cleaning, there is one disclosed in JP-T-2004-529682. This vacuum cleaner includes an upstream cyclone unit and a downstream cyclone unit into which air discharged from the upstream cyclone unit flows.

  The upstream cyclone unit and the downstream cyclone unit separate the dust from the air by causing the air to swirl inside at high speed and applying a centrifugal force to the dust in the air.

  According to the vacuum cleaner having the above configuration, by letting the air discharged from the upstream cyclone unit flow into the downstream cyclone unit, the dust that could not be separated by the upstream cyclone unit is separated by the downstream cyclone unit, and the dust separation rate is increased. Trying to raise.

  However, in the conventional vacuum cleaner, a pressure loss is caused by the upstream cyclone unit, so that the wind pressure of the air flowing into the downstream cyclone unit is lowered.

  As a result, the downstream cyclone unit cannot exert a sufficient centrifugal force on fine dust having a light mass and cannot separate fine dust from air.

  Therefore, the conventional vacuum cleaner has a problem that air containing fine dust is discharged to the outside.

Japanese translation of PCT publication No. 2004-529682

  Then, the subject of this invention is providing the vacuum cleaner which can prevent that fine dust is discharged | emitted from the electric blower outside.

In order to solve the above problems, the vacuum cleaner of the present invention is
A suction port,
An extension tube having one end connected to the suction port,
A suction hose with one end connected to the other end of the extension tube;
A vacuum cleaner body connected to the other end of the suction hose,
The vacuum cleaner body
A cyclone dust collection chamber that separates dust from the air by centrifugal force;
An electric blower that sucks dust into the cyclone dust collection chamber through the suction port body, the extension pipe and the suction hose;
In the suction port,
A member made of a material that positively charges dust toward the extension tube;
A member made of a material that negatively charges the dust toward the extension tube is provided ,
A member made of a material that positively charges the dust toward the extension pipe positively charges the dust by friction with the dust,
Member made of a material which negatively charged dust toward the extension pipe is characterized Rukoto is negatively charged the dust by friction between the dust.

  According to the vacuum cleaner having the above-described configuration, the dust sucked into the suction port body passes through the extension pipe toward the suction hose. At this time, the suction port body is provided with a member made of a material that positively charges dust going to the extension tube and a member made of a material that negatively charges the dust going to the extension tube. Thus, some of the dust going to the extension tube is positively charged, while the other part of the dust going to the extension tube is negatively charged. As a result, fine dusts having a relatively light mass are joined together to generate dust having a relatively heavy mass. That is, the dust aggregation effect can be obtained.

Therefore, since the amount of fine dust entering the cyclone dust collection chamber is reduced, the separation rate of the cyclone dust collection chamber is increased, and it is possible to prevent fine dust from being discharged from the electric blower to the outside.
In the vacuum cleaner of one embodiment,
A rotary brush is rotatably provided in the suction port body, and the dust traveling toward the extension pipe is positively and negatively charged as the rotary brush rotates.

In the vacuum cleaner of one embodiment,
A stirring blade is provided between the suction body and the extension pipe so that dust collides with it.

  According to the vacuum cleaner of the above-described embodiment, since the stirring blade that the dust collides with is provided between the suction port body and the extension pipe, the dust particles positively and negatively charged in the suction port body are mixed with the stirring blade. Collide with and spread.

  Accordingly, the probability that the fine dusts are combined with each other is increased, and the dust aggregation effect can be enhanced.

  According to the vacuum cleaner of the present invention, the suction port body has a member made of a material that positively charges the dust going to the extension tube, and a member made of a material that makes the dust going to the extension tube negatively charged Since a part of the dust passing through the suction port body is positively charged while the other part of the dust passing through the suction port body is negatively charged, the mass is relatively light. Fine dust particles are combined to generate dust with relatively heavy mass. That is, the dust aggregation effect can be obtained.

  Therefore, since the amount of fine dust entering the cyclone dust collection chamber is reduced, the separation rate of the cyclone dust collection chamber is increased, and it is possible to prevent fine dust from being discharged from the electric blower to the outside.

FIG. 1 is a schematic longitudinal sectional view of a vacuum cleaner according to a first embodiment of the present invention. FIG. 2 is a schematic longitudinal sectional view of the extension pipe of the vacuum cleaner according to the first embodiment. FIG. 3 is a schematic cross-sectional view of the extension pipe of the vacuum cleaner according to the second embodiment of the present invention. FIG. 4 is a schematic longitudinal sectional view of a main part of a vacuum cleaner according to a third embodiment of the present invention. FIG. 5 is a schematic perspective view of a stirring blade of the electric vacuum cleaner according to the third embodiment. FIG. 6: is a schematic cross-sectional view of the suction inlet body of the vacuum cleaner of 4th Embodiment of this invention. FIG. 7 is a schematic longitudinal sectional view of a main part of a vacuum cleaner according to a fifth embodiment of the present invention.

  Hereinafter, the vacuum cleaner of this invention is demonstrated in detail by embodiment of illustration.

(First embodiment)
In FIG. 1, the schematic sectional drawing which looked at the vacuum cleaner of 1st Embodiment of this invention from the side is shown.

  The vacuum cleaner includes a suction port body 4, an extension pipe 5 having one end detachably connected to the suction port body 4, and a hand tube 21 having one end detachably connected to the other end of the extension pipe 5. The suction hose 6 having one end connected to the other end of the proximal pipe 21 and the cleaner body 1 detachably connected to the other end of the suction hose 6 are provided.

  One cyclone dust collecting chamber 3 is detachably installed in the vacuum cleaner body 1. When the cyclone dust collection chamber 3 is mounted on the vacuum cleaner main body 1, it communicates with the suction hose 6 through the upstream portion.

  An electric blower 2 that communicates with the downstream portion of the cyclone dust collection chamber 3 is installed in the cleaner body 1. By driving the electric blower 2, the air including the dust 20 sequentially passes through the suction port body 4, the extension pipe 5, and the suction hose 6 and then flows into the cyclone dust collection chamber 3. And the air which flowed in the said cyclone dust collection chamber 3 turns at high speed, and the dust 20 is centrifuged from the air. Further, the air from which the dust 20 has been separated is discharged out of the cleaner body 1.

  FIG. 2 shows a schematic cross-sectional view in which the extension tube 5 is cut along a plane substantially perpendicular to the direction in which the dust 20 flows.

  The extension pipe 5 includes a first member 7 having a substantially semicircular cross section made of, for example, nylon and a second member 8 having a substantially semicircular cross section made of, for example, Teflon (registered trademark). ing.

  The first member 7 positively charges the dust 20 toward the suction hose 6, while the second member 8 negatively charges the dust 20 toward the suction hose 6. And the one end part of the said 1st member 7 is connected to the one end part of the 2nd member 8 via packing 9A. The other end of the first member 7 is connected to the other end of the second member 8 via a packing 9B.

  According to the vacuum cleaner having the above configuration, when the dust 20 sucked into the suction port body 4 passes through the extension pipe 5, a part of the dust 20 is positively caused by friction with the first member 7 of the extension pipe 5. On the other hand, the other part of the dust 20 is negatively charged due to friction with the second member 8 of the extension pipe 5. Thereby, the fine dust 20 with a comparatively light mass couple | bonds together, and a comparatively heavy dust is produced | generated. That is, the effect of agglomeration of the dust 20 is obtained.

  Therefore, since the amount of fine dust entering the cyclone dust collection chamber 3 is reduced, the separation rate of the cyclone dust collection chamber 3 is increased, and the fine dust 20 can be prevented from being discharged from the electric blower 2 to the outside. .

  Moreover, since the said cyclone dust collection chamber 3 is one, pressure loss can be decreased rather than the prior art example of Japanese translations of PCT publication No. 2004-529682.

  Further, since each of the first and second members 7 and 8 has a substantially circular cross section, the dust 20 in the extension pipe 5 is smoothly guided to the suction hose 6 by the first and second members 7 and 8. Can do.

(Second Embodiment)
In FIG. 3, the schematic sectional drawing of the extension pipe | tube 205 of the vacuum cleaner of 2nd Embodiment of this invention is shown. The schematic cross-sectional view of FIG. 3 is a schematic cross-sectional view of the extension tube 205 cut along a plane substantially parallel to the direction in which the dust 20 flows.

  In the vacuum cleaner of the second embodiment, the configuration other than the extension pipe 205 is the same as that of the first embodiment, and thus the description regarding the configuration is omitted.

  In the extension pipe 205, a first intake passage 10 and a second intake passage 11 extending along the first intake passage 10 are formed. A material (for example, nylon or the like) that positively charges the dust 20 toward the suction hose is applied to the inner wall of the first intake passage 10. On the other hand, the inner wall of the second intake passage 11 is coated with a material (for example, Teflon) that negatively charges the dust 20 toward the suction hose. The cross-sectional area of the first intake passage 10 is substantially equal to the cross-sectional area of the second intake passage 11.

  A partition wall 12 is formed in the extension pipe 205 so as to divide the space in the extension pipe 205 into approximately two equal parts. The partition 12 partitions the first intake passage 10 and the second intake passage 11.

  According to the vacuum cleaner having the above configuration, when the dust 20 passes through the extension pipe 205, a part of the dust 20 is positively charged by friction with the inner wall of the first intake passage 10, while the other of the dust 20 A part is negatively charged by friction with the inner wall of the second intake passage 11.

  Therefore, since the surface on which the dust 20 rubs is larger than that in the first embodiment, the dust 20 charged positively and negatively can be generated with high efficiency.

  Further, since the flow passage cross-sectional area of the first intake passage 10 is substantially equal to the flow passage cross-sectional area of the second intake passage 11, the amount of the positively charged dust 20 and the amount of the negatively charged dust 20 are set. Can be made substantially equal to each other, and the agglomeration effect of the dust 20 can be enhanced.

(Third embodiment)
In FIG. 4, the schematic sectional drawing which looked at the principal part of the vacuum cleaner of 3rd Embodiment of this invention from the side is shown. In FIG. 4, the same components as those of the first embodiment shown in FIG. 1 are denoted by the same reference numerals as those of the components in FIG.

  In the vacuum cleaner of the said 3rd Embodiment, since structures other than the hand pipe | tube 321 are the same as that of the said 1st Embodiment, the description regarding the structure is abbreviate | omitted.

  A stirring blade 14 with which the dust 20 collides is provided at the end of the hand tube 321 on the extension tube 5 side.

  FIG. 5 is a schematic perspective view of the stirring blade 14.

  The stirring blade 14 is formed so as to guide air in the direction of the arrow in FIG. The air guided in the direction of the arrow travels to the suction hose 6 through the through hole at the center of the stirring blade 14.

  According to the vacuum cleaner having the above configuration, the dust 20 charged positively and negatively by passing through the extension pipe 5 collides with the stirring blade 14 and is stirred before entering the suction hose 6.

  Therefore, the probability that the fine dust 20 that has passed through the extension pipe 5 will be coupled to each other increases, and the agglomeration effect of the dust 20 can be enhanced.

  As a result, an effect that the separation rate of the cyclone dust collection chamber is higher than that in the first embodiment can be obtained.

(Fourth embodiment)
In FIG. 6, the schematic sectional drawing which looked at the suction inlet body 404 of the vacuum cleaner of 4th Embodiment of this invention from upper direction is shown.

  In the vacuum cleaner of the fourth embodiment, since the configuration other than the suction port body 404 is the same as that of the first embodiment, the description regarding the configuration is omitted.

  A cylindrical rotary brush 15 is rotatably provided in the suction port body 404. A brush body 16 that scoops up dust is attached to the outer peripheral surface of the rotating brush 15.

  The brush body 16 includes a third member 17 made of, for example, nylon and a fourth member 18 made of, for example, Teflon. The third member 17 positively charges the dust sent to the extension pipe. On the other hand, the fourth member 18 negatively charges the dust sent to the extension pipe. The third member 17 and the fourth member 18 are aligned in the longitudinal direction of the rotary brush 15, that is, the rotation axis direction.

  According to the vacuum cleaner having the above configuration, when the rotary brush 15 scoops up dust, a part of the dust is positively charged and the other part of the dust is negatively charged. Aggregation effect is obtained.

  Therefore, since the dust aggregation effect is obtained in each of the suction port body 404 and the extension pipe, the dust aggregation effect can be enhanced as compared with the first embodiment.

  Further, since the third member 17 and the fourth member 18 are arranged in the direction of the rotation axis of the rotary brush 15, dust that is positively charged by the third member 17 can be generated with high efficiency, and the fourth member. 18 can generate negatively charged dust with high efficiency.

(Fifth embodiment)
In FIG. 7, the schematic sectional drawing which looked at the principal part of the vacuum cleaner of 5th Embodiment of this invention from the side is shown. Further, in FIG. 7, the same components as those in the first and fourth embodiments shown in FIGS. 1 and 6 are denoted by the same reference numerals as the components in FIGS.

  In the vacuum cleaner of the fifth embodiment, the configuration other than the stirring blade 19 is the same as that of the first and fourth embodiments, and thus the description regarding the configuration is omitted.

  The stirring blade 19 is provided between the suction port body 404 and the extension pipe 5, and the dust that has passed through the suction port body 404 collides with the stirring blade 19. The stirring blade 19 has the same shape as the stirring blade 14 of the third embodiment, and has the same effect as the stirring blade 14.

  According to the vacuum cleaner having the above configuration, dust charged positively and negatively by passing through the suction port 404 collides with the stirring blade 19 and is stirred before entering the extension pipe 5.

  Therefore, the probability that the fine dust which passed the said suction inlet body 404 will couple | bond together will become high, and the agglomeration effect of dust can be heightened.

  As a result, an effect that the separation rate of the cyclone dust collection chamber is higher than that in the first and fourth embodiments can be obtained.

  In the first to fifth embodiments, the number of the cyclone dust collection chamber 1 is one. However, as in the conventional example of JP-T-2004-529682, an upstream cyclone dust collection chamber and the upstream cyclone dust collection chamber are provided. A downstream cyclone dust collecting chamber into which air from which dust has been removed flows may be provided. Even in this case, the exhaust gas can be cleaned more than the conventional example due to the dust aggregation effect of the extension pipe 5 and the like.

  Moreover, although 1st-5th embodiment of this invention was described, this invention is not necessarily limited only to the said 1st-5th embodiment, What combined suitably 1st-5th embodiment. One embodiment of the present invention may be used.

DESCRIPTION OF SYMBOLS 1 Vacuum cleaner body 2 Electric blower 3 Cyclone dust collection chamber 4,404 Suction port body 5,205 Extension pipe 6 Suction hose 7 First member 8 Second member 10 First intake passage 11 Second intake passage 12 Bulkheads 14, 19 Blade 15 Rotating brush 16 Brush body 17 Third member 18 Fourth member 20 Dust

Claims (3)

A suction port,
An extension tube having one end connected to the suction port,
A suction hose with one end connected to the other end of the extension tube;
A vacuum cleaner body connected to the other end of the suction hose,
The vacuum cleaner body
A cyclone dust collection chamber that separates dust from the air by centrifugal force;
An electric blower that sucks dust into the cyclone dust collection chamber through the suction port body, the extension pipe and the suction hose;
In the suction port,
A member made of a material that positively charges dust toward the extension tube;
A member made of a material that negatively charges the dust toward the extension tube is provided ,
A member made of a material that positively charges the dust toward the extension pipe positively charges the dust by friction with the dust,
It said member configured dust toward the extension pipe of a material that is negatively charged, the electric vacuum cleaner, characterized in Rukoto is negatively charged the dust by friction between the dust. The vacuum cleaner according to claim 1, wherein
A vacuum cleaner characterized in that a rotary brush is rotatably provided in the suction port body, and dust moving toward the extension pipe is positively and negatively charged by rotating the rotary brush. The vacuum cleaner according to claim 1 or 2,
An electric vacuum cleaner characterized in that a stirring blade is provided between the suction body and the extension pipe to which dust collides.

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