JP2007020767A - Vacuum cleaner - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a vacuum cleaner usable for a long period of time without reducing the dust collecting performance. <P>SOLUTION: The vacuum cleaner comprises a centrifuging part 7 for separating dust from sucked air, a dust compression plate part 21a consisting of an approximately disk-shaped protection plate 22a disposed under the centrifuging part 7 and a rod part 23a coaxial with the centrifuging part 7, and a dust accumulation part 8 for accumulating the dust separated from the sucked air by the centrifuging part 7. The rod part 23a of the dust compression plate part 21a is rotatable in the axial direction, so that the dust accumulated in the dust accumulation part 8 is compressed from above. With this structure, the dust accumulated in the dust accumulation part 8 can hardly reach the centrifuging part 7, so that adhesion of dust to a prefilter 16 of the centrifuging part 7 is prevented. The rotating air current generated in the centrifuging part 7 is reflected on the bottom of the dust accumulation part 8, and the accumulated dust is raised upward but is made to rebounded from the disk-shaped protection plate 22a. In this way, adhesion of the dust to the prefilter 16 can be prevented, and impairment of the dust collection performance can be inhibited. <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.

  The present invention solves the above-described conventional problems, and compresses the dust accumulated and accumulated in the dust collection chamber 31 in the dust collection chamber 31 to suppress the adhesion of the dust to the filter 36, thereby collecting the dust. An object of the present invention is to provide a vacuum cleaner that can be used for a long time without deteriorating dust performance.

  In order to solve the above-described 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 lower portion of the centrifuge. A substantially disk-shaped protective part plate provided, a dust compression plate part comprising a rod part coaxial with the central axis of the centrifugal separation part, and a centrifugal separation part provided below the protective part plate of the dust compression plate part And a dust accumulating portion for accumulating dust separated from the suction air at the position, and the dust compression plate portion is provided with the rod portion movably in the axial direction, and descends in the axial direction and accumulates in the dust accumulating portion. The formed dust is compressed from above.

  By compressing the dust that has accumulated on the dust compression plate, the dust accumulation height can be kept low, so that it is difficult for the dust to approach the centrifuge and adheres to the filter of the centrifuge. Since the dust compression plate portion is formed in a substantially disk shape, the rotating airflow generated in the centrifugal separation portion rises again by reflecting on the bottom surface of the dust accumulation portion, and thus once accumulated. Dust is rolled up again, but it is bounced back by the substantially disk-shaped dust compression plate portion that opens downward, and is accumulated again in the dust accumulation portion, so that the dust adheres to the filter of the centrifugal separation portion. It is possible to prevent the deterioration of dust collection performance.

  The vacuum cleaner of the present invention has a dust compression function and prevents dust from adhering to the filter of the centrifugal separator, so that it can be used for a long time without deteriorating dust collection performance.

  According to a first aspect of the present invention, there is provided an electric blower that emits suction air, a substantially cylindrical centrifuge that separates dust from the suction air, a substantially disk-shaped protection member plate provided below the centrifuge, and the Dust compression plate portion comprising a rod portion coaxial with the central axis of the centrifugal separation portion, and dust that is provided below the protection portion plate of the dust compression plate portion and accumulates dust separated from suction air in the centrifugal separation portion The dust compression plate portion is formed such that the rod portion is provided so as to be movable in the axial direction, and the dust deposited in the dust accumulation portion is compressed from above by descending in the axial direction. The dust that had accumulated in the dust collection chamber approached the centrifuge and easily adhered to the filter of the centrifuge and reduced the dust collection performance, but the dust that had accumulated on the dust compression plate By compressing the dust, the dust accumulation height can be kept low. It is difficult to get close to the centrifuge part, and it is prevented from adhering to the filter of the centrifuge part, and the dust compression plate part is formed in a substantially disc shape, so that the rotating airflow generated in the centrifuge part is accumulated in the dust accumulation. Since the dust rises again by reflecting on the bottom surface of the part, the dust once accumulated is rolled up again, but is rebounded by the substantially disk-shaped dust compression plate part opened downward, and again in the dust accumulation part It can be used for a long period of time by preventing the dust from adhering to the filter of the centrifugal separator and suppressing the decrease in dust collection performance.

  According to a second aspect of the present invention, the centrifugal separator according to the first aspect is provided with a substantially cylindrical filter having a central axis coaxial with the rod portion of the dust compression plate portion and separating coarse dust, and the rod of the dust compression plate portion The part is provided with a cleaning tool for removing dust from the inside of the filter, and when the dust compression plate part moves up and down, the cleaning tool provided on the rod part of the dust compression plate part moves up and down. The cleaning tool can remove dust adhering to the filter, recover the dust collecting performance, and can be used for a long time.

  According to a third aspect of the present invention, an elastic body for moving the rod portion of the dust compression plate portion in the axial direction is provided inside the substantially cylindrical filter of the second aspect of the invention, and the elastic body is placed inside the substantially cylindrical filter. By providing it, the dust does not get caught on the elastic body, and the dust accumulated on the dust compression plate is automatically compressed by the elasticity of the elastic body, so the dust accumulation height is automatically kept low. Therefore, it becomes difficult for dust to approach the centrifuge, and it can be used for a long period of time by preventing the dust from adhering to the filter of the centrifuge and suppressing the reduction in dust collection performance.

  According to a fourth invention, in any one of the first to third inventions, the dust compression plate portion is formed of a soft material, and when the dust compression plate portion is lowered onto the accumulated dust to compress the dust, The substantially disk-shaped edge of the dust compression plate made of soft material is warped by the repulsive force of the dust, increasing the approximate disk shape area of the dust compression plate facing the dust, and compressing the dust over a wider area. Because the dust is compressed at a higher density, the accumulated height of the dust can be kept lower, making it difficult for the dust to get closer to the centrifuge and preventing it from adhering to the filter of the centrifuge. By suppressing the decrease, it can be used for a longer period of time.

  According to a fifth invention, in any one of the first to third inventions, the dust compression plate portion is formed of a material containing an antistatic agent, and dust is applied to the dust compression plate portion by the effect of the antistatic agent. Therefore, the flow velocity of the rotating airflow bounced back against the dust compression plate portion is not reduced, and the dust can be prevented from adhering to the filter of the centrifugal separation portion, and the dust collection performance can be suppressed and used for a long time. .

(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.

  Reference numeral 21a denotes a dust compression plate portion formed of a substantially disk-shaped protection portion plate 22a and a substantially cylindrical rod portion 23a provided at the lower portion of the centrifugal separation portion 7. The rod portion 23a has a substantially circular opening portion 24a provided in the dust collecting portion lid 12, a substantially circular opening portion 25a provided in the filter portion 14, and a substantially circular shape provided in the bottom surface of the centrifugal separation portion 7. The protective part plate 22a that passes through the opening 26a and communicates with the top surface of the protective part plate 22 and moves as the bar part 23a moves up and down also moves in conjunction with the vertical direction.

  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 reflection on the bottom surface of the dust accumulation unit 8, so that the dust once accumulated is again rolled up, but the lower part of the centrifugal separation unit 7 It is rebounded by the substantially disk-shaped protective part plate 22a opened downward and provided in the dust accumulation part 8 again.

  Suction air containing fine dust from which coarse dust has been separated by the centrifugal separator 7 passes through the pre-filter part 16 and passes through the filter part 14 inside the dust collecting part lid 12 to remove fine dust. After being filtered and 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 unit 16 into which the suction air flows, and thus the prefilter unit 16 tends to adhere, but the bar 23a is moved downward. By doing so, the bottom surface of the protective part plate 22a communicating with the rod part 23a moves downward to compress the accumulated upper layer dust, so that the stacking height of the dust is lowered, and the deposited upper layer This dust is far from the pre-filter part 16 and becomes difficult to adhere to the pre-filter part 16 and can be used for a long time without deteriorating the dust collecting performance.

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

  In FIG. 2, the dust compression plate portion 21a 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 the dust to the protection plate 22a of the dust compression plate portion 21a due to the effect of the antistatic agent, the flow velocity of the rotating airflow bounced back to the protection plate 22a is not reduced, and the dust of the centrifuge 7 It can be used for a long period of time by preventing the dust collection performance from being prevented from adhering to the prefilter 16.

(Embodiment 3)
A third embodiment of the present invention will be described with reference to FIGS. 4 (a) and 4 (b). The same parts as those in the above embodiment are given the same reference numerals and the description thereof is omitted.

  A feature of the present embodiment is that the dust compression plate portion 21a 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 portion 21a is lowered from the state shown in FIG. 4 (b) onto the accumulated dust and the dust is compressed as shown in FIG. 4 (a), the dust compression plate formed of a soft material is used. Protective plate 22a edge of portion 21a is warped by the repulsive force of the dust, and the area of protective plate 22a that faces the dust increases. The dust accumulation height can be kept lower, the dust is less likely to approach the centrifuge 7, and it is further prevented from adhering to the prefilter 16 of the centrifuge 7, and the reduction in dust collection performance is suppressed for a longer period of time. Can be used.

(Embodiment 4)
A fourth embodiment of the present invention will be described with reference to FIG. The same parts as those in the above embodiment are given the same reference numerals and the description thereof is omitted.

  In FIG. 5, a substantially ring-shaped cleaning tool 27 is disposed on the outer periphery of the rod portion 23a. The cleaning tool 27 has an outer dimension that is slightly smaller than the inner dimension of the pre-filter 16 and can move smoothly in the up-down direction within the centrifugal separator 7. A brush 28 in contact with the inner surface of the prefilter 16 is attached to the outer surface of the cleaning tool 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.

  The cleaning tool 27 for removing dust from the filter 16 is provided. When the dust compression plate portion 21c moves up and down, the cleaning tool 27 provided on the rod portion 23a of the dust compression plate portion 21c moves up and down. The brush 28 provided on the outer surface of the cleaning tool 27 removes dust adhering to the pre-filter 16 and restores the dust collecting performance, so that it can be used for a long time.

(Embodiment 5)
A fifth embodiment of the present invention will be described with reference to FIG. The same parts as those in the above embodiment are given the same reference numerals and the description thereof is omitted.

  In FIG. 6, reference numeral 21 c denotes a dust compression plate portion that includes a substantially disk-shaped protection portion plate 22 c provided at the lower portion of the centrifugal separation portion 7 and a substantially cylindrical rod portion 23 c having a substantially disk portion at the tip. . Reference numeral 26c denotes an opening through which the rod portion 23c passes. A substantially cylindrical box 29 having an inner diameter slightly larger than the circumferential diameter of the substantially disk portion of the rod portion 23c is disposed in the centrifugal separation portion 7 so as to wrap the rod portion 23c. , 30 is an elastic body disposed between the substantially disk portion and the ceiling surface of the substantially cylindrical box 29.

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

  Since the elastic body 30 that automatically moves the dust compression plate portion 21c up and down is disposed in the centrifugal separator 7, dust does not adhere to the elastic body 30, so that the elastic body 30 is smooth. By expanding and contracting and moving the protective part plate 22c downward to compress the deposited upper layer dust, the dust layer height is automatically lowered, and the deposited upper layer dust is prefiltered. It is difficult to adhere to the prefilter part 16 away from the part 16, and can be used for a long time without deteriorating the dust collection performance.

  As described above, the vacuum cleaner according to the present invention can be used for a long time without deteriorating the dust collection performance, and can provide a vacuum cleaner with improved usability.

Whole sectional drawing of the vacuum cleaner which shows Embodiment 1 of this invention Schematic cross section of the dust collection part Schematic top view of the dust collector (A) Cross sectional view of the dust collection plate after the dust compression plate portion is lowered, showing Embodiment 3 of the present invention (b) Same as the cross section of the dust collection plate before the dust compression plate portion is lowered Sectional drawing of a substantially dust collecting portion showing Embodiment 4 of the present invention Approximate dust collection section sectional view showing Embodiment 5 of the present invention Schematic diagram of a conventional vacuum cleaner

Explanation of symbols

6 Electric Blower 7 Centrifugal Separator 8 Dust Accumulator 21 Dust Compression Plate 27 Cleaning Tool 30 Elastic Body

Claims (5)

An electric blower that emits suction air, a substantially cylindrical centrifuge that separates dust from the suction air, a substantially disk-shaped protection plate provided below the centrifuge, and a central axis of the centrifuge And a dust compression plate portion comprising a rod portion coaxial with the dust compression plate portion, and a dust storage portion that is provided below the protection plate of the dust compression plate portion and accumulates dust separated from the suction air by the centrifugal separation portion, The dust compression plate portion is an electric vacuum cleaner in which the rod portion is provided so as to be movable in the axial direction, and is lowered so as to compress dust accumulated in the dust accumulating portion from above. The centrifugal separation part is provided with a substantially cylindrical filter whose central axis is coaxial with the rod part of the dust compression plate part and separates coarse dust, and the filter is dedusted from the inside to the rod part of the dust compression plate part. The electric vacuum cleaner according to claim 1, further comprising a cleaning tool. The electric vacuum cleaner according to claim 2, wherein an elastic body for moving the rod portion of the dust compression plate portion in the axial direction is provided inside the substantially cylindrical filter. The vacuum cleaner according to any one of claims 1 to 3, wherein the dust compression plate portion is formed of a soft material. The vacuum cleaner according to any one of claims 1 to 3, wherein the dust compression plate portion is formed of a material containing an antistatic agent.

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