JP2007020769A - Vacuum cleaner - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To enable a vacuum cleaner to be used for a long time, and also facilitate the discharge of dust/dirt. <P>SOLUTION: The vacuum cleaner is equipped with an electric blower which generates suction air, a centrifuging section 7 which separates dust/dirt from the suction air, a dust/dirt compressing plate 21 which constitutes the lower end part of the centrifuging section 7, and at the same time, is freely movably provided under the centrifuging section 7, and a dust/dirt accumulating section 8 which is provided under the centrifuging section 7, and accumulates dust/dirt being separated from the suction air by the centrifuging section 7. The vacuum cleaner is constituted in such a manner that when the operation of the electric blower is stopped, the dust/dirt compressing plate 21 is moved downward, and dust/dirt accumulated in the dust/dirt accumulating section 8 are pressed from the top. Thus, dust/dirt accumulated in the dust/dirt accumulating section 8 can be prevented from adhering to the external surface of a pre-filter 16 of the centrifuging section 7, and the use for a long period of time is made possible by maintaining the dust collecting performance. Also, when the dust/dirt compressing plate 21 is moved downward, dust/dirt collected on the dust/dirt compressing plate 21 in the pre-filter 16 of the centrifuging section 7 can be discharged to the dust/dirt accumulating section 8, and the discharge of dust/dirt from the vacuum cleaner body is facilitated. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a dust collection structure for a vacuum cleaner.

  A conventional vacuum cleaner will be described with reference to FIG.

A dust-collecting chamber 31 with a bottom is provided, and an intake port 32 for sucking air inside is provided on the side wall of the dust-collecting chamber 31 in a tangential direction. A lid 34 is provided so as to cover the upper end opening 33 of the dust collection chamber 31, and an exhaust port 35 is provided in the lid 34. A filter 36 is attached so as to cover the upper end opening 33 of the dust collection chamber 31. When the electric blower 37 is operated, dust is sucked from the suction portion 38, sucked into the dust collecting chamber 31 from the suction port 32, centrifuged in the dust collecting chamber 31, and exhaust gas is discharged from the exhaust port 35 through the filter 36. (See Patent Document 1).
JP 2001-104223 A

  However, the conventional configuration has a problem that the dust accumulated and accumulated in the dust collecting chamber 31 adheres to the filter 36 and deteriorates the dust collecting performance. Further, it has a problem that it is difficult to discharge dust in the filter 36.

  The present invention solves the above-described conventional problems, and an object of the present invention is to provide a vacuum cleaner that can be used for a long period of time without deteriorating dust collection performance and can easily discharge dust. .

  In order to solve the conventional problems, an electric vacuum cleaner according to the present invention includes an electric blower that generates suction air, a substantially cylindrical centrifuge that separates dust from the suction air, and a bottom surface of the centrifuge. And a dust compression plate provided below the centrifugal separation unit so as to be movable along the central axis of the centrifugal separation unit, and provided below the centrifugal separation unit, and separated from the suction air by the centrifugal separation unit. A dust accumulating unit for accumulating the dust, and when the operation of the electric blower is stopped, the dust compression plate is moved toward the lower side of the centrifugal separation unit, and the dust accumulated in the centrifugal separation unit is moved to the lower dust While being dropped to the accumulation part, the dust accumulated on the dust accumulation part is compressed from above.

  As a result, the accumulated dust can be compressed by the dust compression plate, so that the accumulated height of the dust can be kept low, so that it becomes difficult for the dust to approach the centrifuge, and the accumulated dust adheres to the filter of the centrifuge. And can be used for a long period of time without deteriorating the dust collection performance. Further, the dust compression plate constitutes the bottom surface of the centrifuge unit, and accumulates inside the centrifuge unit when moving downward to compress dust accumulated in the dust accumulation unit (mainly coarse dust center). Dust (mainly fine dust center) can be discharged to the dust accumulating section, and when discharging the dust in the vacuum cleaner, it is only necessary to discharge the dust in the dust accumulating section.

  The vacuum cleaner of the present invention is provided with a movable dust compression plate having a dust compression function, and prevents dust from adhering to the prefilter of the centrifugal separation unit, so that the dust collection performance is maintained for a long time. Can be used. In addition, by using the bottom surface of the centrifugal separator also as the movable dust compression plate, it becomes easier to discharge the dust from the cleaner body.

  1st invention comprises the electric blower which emits a suction | inhalation wind, the substantially cylindrical centrifuge part which isolate | separates dust from the said suction | inhalation wind, and the bottom face of the said centrifuge part, and along the central axis of a centrifuge part A dust compression plate movably provided below the centrifuge, and a dust accumulation unit provided below the centrifuge and depositing dust separated from the suction air by the centrifuge, When the operation of the electric blower is stopped, the dust compression plate is moved toward the lower side of the centrifugal separation unit, and the dust accumulated in the centrifugal separation unit is dropped to the lower dust accumulation unit, and the dust accumulation unit It is configured to compress the accumulated dust from above, and the dust accumulated in the dust collection chamber approaches the centrifugal separation unit and easily adheres to the prefilter of the centrifugal separation unit, which reduces the dust collection performance. Deposited at the compression plate By compressing the dust, the dust accumulation height can be kept low, making it difficult for the dust to approach the centrifuge, preventing it from reattaching to the prefilter of the centrifuge, and reducing the dust collection performance. It becomes possible to use the vacuum cleaner for a long time.

  In addition, the dust compression plate constitutes the bottom surface of the centrifugal separation unit, and when moving downward to compress the dust accumulated in the dust accumulation unit (mainly the coarse dust center), inside the centrifugal separation unit, Dust collected on the dust compression plate (mainly the center of fine dust) can be discharged to the dust accumulation part. When discharging the dust in the dust accumulation part, it is also collected on the dust compression plate inside the centrifugal separation part. Dust can be discharged at the same time.

  In the second invention, the shape of the dust compression plate of the first invention is a substantially U-shape opened downward, and the rotating air flow generated in the centrifugal separator is reflected on the bottom surface of the dust accumulator. In order to rise again, the dust once accumulated is rolled up again, but it is bounced back by the substantially U-shaped dust compression plate opened downward and is again accumulated in the dust accumulating portion. Further, it is possible to prevent the dust from re-adhering to the prefilter of the centrifugal separator, and to suppress a decrease in dust collection performance.

  In addition, when the dust compression plate is moved downward to compress the dust accumulated in the dust accumulation unit, the dust accumulated in the centrifugal separation unit constitutes the bottom surface of the centrifugal separation unit. As it moves, it slides down above the dust compression plate and falls to the dust storage section below. However, the shape of the dust compression plate is substantially U-shaped and opens downward, making it easier to slip and fall. It is possible to prevent the dust from remaining on the upper surface of the dust compression plate and not being discharged to the dust accumulating portion.

  According to a third aspect of the present invention, the centrifugal portion of the first or second aspect is provided with a rod portion connected to the dust compression plate and coaxial with the central axis of the centrifugal portion, and the surface of the substantially cylindrical centrifugal portion. In addition, a substantially cylindrical pre-filter for separating coarse dust is provided, and the rod part is provided with a dust removing part for removing dust from the inside, and the dust compression plate part moves up and down, The dust removing portion provided on the rod portion of the dust compression plate moves up and down, and the dust removing portion wipes off dust adhering to the prefilter, recovering the dust collecting performance, and can be used for a long time.

  According to a fourth aspect of the present invention, an elastic body is provided in the substantially cylindrical prefilter according to any one of the first to third aspects of the present invention to return to the original position when the dust compression plate portion is moved downward. Therefore, since the elastic body is provided inside the substantially cylindrical pre-filter, the coarse dust does not get caught on the elastic body, and the dust that has moved down and accumulated by the elasticity of the elastic body has been compressed. The compression plate can be automatically returned to the original position, and the dust compression operation becomes more convenient.

  According to a fifth invention, in any one of the first to fourth inventions, the dust compression plate is formed of a soft material. When the dust compression plate is lowered onto the accumulated dust to compress the dust, the soft material The substantially disk-shaped edge of the dust compression plate formed by the warp due to the repulsive force of the dust increases the approximate disk shape area of the dust compression plate facing the dust, compresses the dust in a wider area, and has a higher density Since the dust is compressed to a lower level, the accumulated height of the dust can be kept lower, making it difficult for the dust to approach the centrifuge, preventing the dust from reattaching to the prefilter in the centrifuge, and reducing the dust collection performance. By suppressing it, it can be used for a longer period of time.

  According to a sixth aspect of the present invention, in any one of the first to fifth aspects, the dust compression plate is formed of a material containing an antistatic agent, and dust adheres to the dust compression plate due to the effect of the antistatic agent. Therefore, the flow velocity of the rotating airflow that bounces off the dust compression plate is not reduced, prevents dust from reattaching to the prefilter of the centrifuge, prevents deterioration of dust collection performance, and is used for a long time. Enable.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. Note that the present invention is not limited to the present embodiment.

(Embodiment 1)
A first embodiment of the present invention will be described with reference to FIG. 1, FIG. 2, and FIG.

  1, 2, and 3, reference numeral 5 denotes an electric blower 6 that generates suction air and a suction device that sucks dust, and a centrifugal separator 7 that is disposed above and centrifuges dust from the suction air sucked. The dust collecting unit is configured by a dust accumulating unit 8 which is disposed below and deposits the dust separated from the centrifuge unit 7.

  In addition, 9 is an intake port portion for allowing suction air containing dust sucked by the suction tool to flow into the dust collecting unit 5, and 10 is sucked from the intake port unit 9 at the inlet of the centrifugal separation unit 7. It is a branch port part for diverting the suction air containing dust into the centrifuge part 7 room substantially uniformly. Reference numeral 11 denotes a handle portion for carrying the dust collecting portion 5, and 12 denotes dust that is provided with an opening portion 13 substantially above the dust collecting portion 5, covers the opening portion 13, and is contained in suction air sucked inside. The dust collector lid 15 is provided with a filter portion 14 for filtration, and 15 is provided in the vicinity of the handle portion 11 to lock and release between the dust collector lid 12 and the dust collector 5. It is.

  Further, 16 is a pre-filter for accumulating coarse dust, which is disposed between the dust collecting portion 5 and the dust collecting portion lid 12 and is located substantially on the vertical center of the centrifugal separator 7 and has a substantially cylindrical shape. It is.

  Further, 21 constitutes the bottom surface of the centrifugal separator 7 and is provided so as to be movable below the centrifugal separator 7 along the central axis of the centrifugal separator 7 and has a substantially U-shape opened downward. This is a dust compression plate having a shape. Reference numeral 22 denotes a rod portion that is connected to the dust compression plate 21 and provided coaxially with the central axis of the centrifugal separation portion 7 in the centrifugal separation portion 7, and the rod portion 22 is provided on the dust collecting portion lid 12. It passes through a substantially circular opening 23 and a substantially circular opening 24 provided in the filter part 14 and is connected to the top surface of the dust compression plate 21. The rod part 22 is connected by moving up and down. The dust compression plate 21 is also moved in conjunction with the top and bottom.

  Reference numeral 18 denotes a discharge port for discharging dust provided on the outer periphery of the dust accumulating portion 8, and 19 denotes a discharge port cover that covers the discharge port 18.

  About the vacuum cleaner comprised as mentioned above, the effect | action is demonstrated below.

  When the electric vacuum cleaner is operated, the suction air including dust sucked from the electric blower 6 passes through the air inlet 9 and is approximately evenly distributed by the branch port 10 provided on the upstream side of the centrifugal separator 7. In the state of being divided into two, it is sucked in a substantially tangential direction of the inner surface of the centrifugal separator 7.

  The suction air containing the sucked dust falls downward due to its own mass while rotating on the inner peripheral surface of the centrifugal separator 7 and is accumulated in the dust accumulation part 8 below the centrifugal part 7. . Thereafter, the rotating airflow generated in the centrifugal separation unit 7 rises again by being reflected by the bottom surface of the dust accumulating unit 8, so that the dust once accumulated is rolled up again, but the bottom surface of the centrifugal separation unit 7 , And is rebounded by the dust compression plate 21 having a substantially U-shape that opens downward, and can be prevented from accumulating in the dust accumulating portion 8 and reattaching to the prefilter 16.

  Suction air containing fine dust from which coarse dust has been separated by the centrifugal separator 7 passes through the pre-filter 16 and passes through the filter part 14 inside the dust collecting part lid 12 to filter fine dust. Then, after being sucked into the electric blower 6 in a clean state, it is discharged to the atmosphere.

  If dust continues to accumulate in the dust accumulating unit 8, the accumulated dust in the upper layer approaches the prefilter 16 into which the suction air flows, and thus easily reattaches to the prefilter 16. However, when the electric blower 6 is stopped, For example, the bottom of the dust compression plate 21 connected to the rod portion 22 is moved downward by operating the operation portion 5 to open the dust collecting portion lid 12 and manually moving the rod portion 22 downward. By compressing the accumulated dust of the upper layer, the stacking height of the dust is lowered, and the accumulated dust of the upper layer is far from the pre-filter 16 and is difficult to be reattached to the pre-filter 16, thereby collecting dust. It becomes possible to use the vacuum cleaner for a long time without lowering.

  Further, the dust compression plate 21 constitutes the bottom surface of the centrifugal separator 7, and when moving downward to compress the dust (mainly coarse dust center) accumulated in the dust accumulator 8, the centrifugal separator 7 can be discharged to the dust accumulating unit 8 (mainly fine dust center). Therefore, when the dust accumulated in the dust accumulation unit 8 is discharged from the discharge port 18 for discharging the dust provided on the outer periphery of the dust accumulation unit 8, the above dust compression operation is performed in advance. In addition, the dust accumulated in the pre-filter 16 can be discharged together, and the dust discharging work from the electric vacuum cleaner becomes easier.

  Further, the dust accumulated in the prefilter 16 slides down on the upper surface of the dust compression plate 21 along with the movement of the dust compression plate 21 constituting the bottom surface of the centrifugal separator 7 and falls to the lower dust accumulation unit 8. In particular, since the shape of the dust compression plate 21 is substantially U-shaped open downward, the top surface of the dust compression plate 21 is more slippery and easier to fall, so that the dust There is no problem of remaining on the upper surface of the compression plate 21 and not being discharged to the dust accumulating unit 8.

  In this embodiment, the bar portion 22 is manually moved downward. However, it is automatically moved downward by operating the switch in conjunction with the switch or the like using another mechanism. Even if you do it, there is no problem.

(Embodiment 2)
A second embodiment of the present invention will be described with reference to FIG. The same parts as those in the first embodiment are denoted by the same reference numerals, and detailed description thereof is omitted.

  In FIG. 2, the dust compression plate portion 21 is formed of a material containing an antistatic agent.

  About the vacuum cleaner comprised as mentioned above, the effect | action is demonstrated below.

  By eliminating the adhesion of dust to the dust compression plate portion 21 due to the effect of the antistatic agent, the flow velocity of the rotating airflow bounced back to the dust compression plate 21 is not reduced, and the dust adheres to the prefilter 16 of the centrifugal separation portion 7. Can be used for a long period of time.

(Embodiment 3)
A third embodiment of the present invention will be described with reference to FIG. The same parts as those in the first and second embodiments are given the same reference numerals, and detailed description thereof is omitted.

  In FIG. 4, the dust compression plate 21 is formed of a soft material.

  About the vacuum cleaner comprised as mentioned above, the effect | action is demonstrated below.

  When the dust compression plate 21 is lowered onto the dust accumulated in the dust accumulating portion 8 and the dust is compressed, the edge of the dust compression plate 21 formed of a soft material is warped by the repulsive force of the dust and faces the dust. By increasing the area of the compression plate 21 and compressing the dust over a wider area, it is possible to compress the dust at a higher density, keeping the dust accumulation height lower, and making it difficult for the dust to approach the centrifuge 7. Accordingly, it is possible to further prevent the dust from adhering to the prefilter 16 of the centrifugal separator 7 and to suppress a decrease in the dust collecting performance, so that it can be used for a longer period.

(Embodiment 4)
A fourth embodiment of the present invention will be described with reference to FIG. In addition, about the same component as the said Embodiment 1-3, the same code | symbol is attached | subjected and the detailed description is abbreviate | omitted.

  In FIG. 5, a substantially ring-shaped dust removing portion 27 is disposed on the outer periphery of the rod portion 22. The dust removing unit 27 has an outer size slightly smaller than the inner size of the pre-filter 16 and can move smoothly in the centrifuge unit 7 in the vertical direction. A brush 28 that is in contact with the inner surface of the prefilter 16 is attached to the outer surface of the dust removing portion 27. The brush 28 has bristles made of synthetic resin, and the end of the brush 28 is aligned with the curvature corresponding to the curvature of the inner surface of the centrifugal separator 7 and elastically contacts the prefilter 16. In addition to the brush 27 made of such bristles, a raised cloth, a soft resin, or the like may be arranged.

  About the vacuum cleaner comprised as mentioned above, the effect | action is demonstrated below.

  Since the dust removing portion 27 for removing dust from the pre-filter 16 is provided, the dust compression plate 21 moves up and down, whereby the dust removal portion 27 provided on the rod portion 22 connected to the dust compression plate 21 moves up and down. The brush 28 provided on the outer surface of the dust removing unit 27 removes dust adhering to the inner surface of the pre-filter 16 and restores the dust collecting performance, thereby enabling long-term use of the electric vacuum cleaner.

(Embodiment 5)
A fifth embodiment of the present invention will be described with reference to FIG. The same parts as those in the first to fourth embodiments are given the same reference numerals, and detailed descriptions thereof are omitted.

  In FIG. 6, reference numeral 29 denotes a substantially cylindrical portion having an inner diameter slightly larger than the outer shape of the rod portion 22, which is disposed so as to wrap the rod portion 22 in the centrifugal separator 7, and 30 is the rod portion 22. It is an elastic body arrange | positioned between the upper front-end | tip and the ceiling surface of the said substantially cylindrical part 29. FIG.

  About the vacuum cleaner comprised as mentioned above, the effect | action is demonstrated below.

  When the dust compression plate portion 21 is moved downward, a force for returning the dust compression plate portion 21 to the original position by the elastic body 30 acts on the dust compression plate portion 21 and the dust compression plate portion 21 automatically moves upward. Therefore, the operation becomes easier.

  Further, since the elastic body 30 is disposed inside the pre-filter 16 of the centrifugal separator 7, it becomes difficult for coarse dust or the like to adhere to the elastic body 30, and the elastic body 30 is elastically deformed smoothly, and is elastic by the dust. The movement of the body 30 is less restricted.

  As described above, according to the vacuum cleaner of the present invention, it is possible to provide a vacuum cleaner that maintains dust collection performance, can be used for a long period of time, and easily discharges dust.

Sectional drawing which shows the whole structure of the vacuum cleaner in Embodiment 1 of this invention. Same schematic cross section of dust collecting part Same top view of dust collector (A) Main part sectional drawing which shows the state which the dust compression board has moved downward and compressed the dust in Embodiment 3 of this invention (b) Same as the above, the dust compression board moved upwards and the centrifugal separation part Cross-sectional view of the main part showing the state constituting the lower end Sectional drawing of the principal part of the dust collection part in Embodiment 4 of this invention Sectional drawing of the dust collection part in Embodiment 5 of this invention Sectional drawing which shows the whole structure of the conventional vacuum cleaner

Explanation of symbols

6 Electric Blower 7 Centrifugal Separator 8 Dust Accumulator 16 Prefilter 21 Dust Compression Plate 22 Rod 27 Dust Remover 30 Elastic Body

Claims (6)

An electric blower that emits suction air, a substantially cylindrical centrifugal separation unit that separates dust from the suction wind, and a bottom surface of the centrifugal separation unit, and along the central axis of the centrifugal separation unit The electric blower is stopped, comprising: a dust compression plate movably provided below; and a dust accumulation unit provided below the centrifugal separation unit for accumulating the dust separated from the suction air by the centrifugal separation unit. Sometimes, the dust compression plate is moved downward of the centrifugal separation unit, the dust accumulated in the centrifugal separation unit is dropped into the lower dust accumulation unit, and the dust accumulated in the dust accumulation unit is A vacuum cleaner that compresses. The electric vacuum cleaner according to claim 1, wherein the dust compression plate has a substantially U-shape opened downward. In the centrifuge part, a rod part connected to a dust compression plate and coaxial with the central axis of the centrifuge part is provided, and a substantially cylindrical prefilter for separating coarse dust is provided on the surface of the substantially cylindrical centrifuge part. The vacuum cleaner according to claim 1, wherein the bar portion is provided with a dust removing portion for removing dust from the inside of the pre-filter. The electric vacuum cleaner according to any one of claims 1 to 3, wherein an elastic body is provided in the substantially cylindrical pre-filter so as to return to the original position when the dust compression plate is moved downward. The vacuum cleaner according to any one of claims 1 to 4, wherein the dust compression plate is formed of a soft material. The vacuum cleaner according to any one of claims 1 to 5, wherein the dust compression plate is formed of a material containing an antistatic agent.

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