JP2005218561A - Electric vacuum cleaner - Google Patents

Abstract

A vacuum cleaner capable of suppressing a decrease in dust collection efficiency is provided.
A dust collecting unit that collects dust separated by a separating unit by a bypass air passage BW communicating with a downstream side of a separating unit filter provided in the separating unit for separating dust sucked together with air from the air. By blowing air onto the downstream surface of the dust collector filter 59 provided in 53, dust adhesion to the dust collector filter 59 is suppressed and clogging of the dust collector filter 59 is suppressed. Reduction in efficiency can be suppressed.
[Selection] Figure 1

Description

  The present invention relates to a vacuum cleaner provided with a dust collector filter provided in a dust collector that collects dust separated by a separator.

  Conventionally, this type of vacuum cleaner includes a vacuum cleaner body that houses an electric blower. The vacuum cleaner main body is provided with a separated dust collecting portion communicating with the suction side of the electric blower. For example, the separation dust collection unit collects dust by separating the dust from the air by swirling the air containing the dust. A plurality of filters are provided in the separated dust collecting portion between the suction side of the electric blower (see, for example, Patent Document 1).

In addition, the separation dust collection unit is provided with a first separation unit for separating dust from the air by moving the dust straight with the air, and a second separation unit for separating the dust from the air by swirling the dust with the air, There is also a configuration in which a filter is provided in each of these separation units (see, for example, Patent Document 2).
Japanese Patent Laying-Open No. 2003-310503 (page 2-4, FIG. 1) Japanese Patent No. 3461824 (page 4, FIG. 1)

  However, in the above vacuum cleaner, when one filter is clogged with the collected dust, dust that does not adhere to this filter adheres to other filters. There is a problem that the suction force of the machine is reduced and the dust collection efficiency is reduced.

  This invention is made | formed in view of such a point, and it aims at providing the vacuum cleaner which can suppress the fall of dust collection efficiency.

  The present invention relates to a separation unit that separates dust sucked together with air by negative pressure of an electric blower from the air, a separation unit filter provided in the separation unit, and a dust collection unit that collects dust separated by the separation unit. And a dust collector filter provided in the dust collector and located downstream of the separator filter, and communicates with the downstream side of the separator filter, and blows air onto the downstream surface of the dust collector filter. And a bypass air passage.

  In addition, the present invention is disposed on the downstream surface of the dust collecting unit filter, and is driven by air from at least one of the dust collecting unit filter and the separation unit filter to be disposed downstream of the dust collecting unit filter. A drive cleaning unit for cleaning the surface is provided.

  According to the present invention, dust is prevented from sticking to the dust collector filter by blowing air onto the downstream surface of the dust collector filter by the bypass air passage communicating with the downstream side of the separator filter. It is possible to suppress clogging of the dust filter and to prevent a decrease in dust collection efficiency.

  Further, according to the present invention, the dust collecting unit filter is driven by the air that has passed through at least one of the dust collecting unit filter and the separating unit filter to clean the downstream surface of the dust collecting unit filter, thereby collecting the dust collecting unit. The sticking of dust to the part filter can be suppressed, the clogging of the dust part filter can be suppressed, and the reduction of the dust collection efficiency can be suppressed.

  Hereinafter, the structure of the vacuum cleaner of the 1st Embodiment of this invention is demonstrated with reference to FIG.

  1 and 3, reference numeral 1 denotes a vacuum cleaner body. The vacuum cleaner body 1 is a vacuum cleaner that separates and collects dust contained in the sucked-in air. The vacuum cleaner body 1 includes a lower case 2, a middle case (not shown) attached to the upper side of the lower case 2, an upper case 4 attached to the lower case 2 and the middle case by closing the rear portion of the middle case. And the main body case 6 provided with the cover body 5 which covers the front upper part of a middle case so that opening and closing is possible. Further, an electric blower 7 is accommodated between the middle case and the upper case 4 of the main body case 6.

  And on the front side of the lower case 2, there is provided a cup holding portion 12 which is a bottomed cylindrical space in which a turning wheel 11 is turnably and rotatably attached to the bottom portion. The upper side of the cup holder 12 is covered with the lid 5. A pair of traveling wheels 13 that are rotatable along the front side and the rear side in the traveling direction of the main body case 6 are respectively attached to both sides of the lower case 2 on the rear side. As a result, the cleaner body 1 can travel on the floor as the surface to be cleaned.

  Further, on the front side of the lid body 5, a main body suction port 14 that opens toward the front is provided. A base end of a flexible hose body 15 communicates with the main body suction port 14 and is detachably connected. A hand operation unit 16 capable of selecting an operation mode of the electric blower 7 is provided at the tip of the hose body 15. The hand operating unit 16 is provided with a plurality of setting buttons 17 for setting the driving state of the electric blower 7 and the like in the cleaner body 1 to a predetermined state, and a grip that an operator grips when cleaning. The part 18 protrudes from the proximal end side. In addition, an elongated, substantially cylindrical extension tube 21 that can be expanded and contracted is detachably connected to the distal end of the hand operation unit 16. Furthermore, a floor brush 22 serving as a suction port for sucking dust on the carpet is detachably connected to the tip of the extension pipe 21, for example, installed on a carpet on the floor of the room. .

  Further, between the lower case 2 and the upper case 4, a cord reel 24 is accommodated in a cord reel chamber (not shown) partitioned by an intermediate case. The cord reel 24 is wound with a power cord (not shown) for supplying power for driving the electric blower 7 from the outside. The power cord is led out from a cord port (not shown) provided at the rear portion of the lower case 2 so as to be drawn out of the main body case 6. Furthermore, a plug portion (not shown) that is detachably inserted into an outlet (not shown) provided on a wall surface or the like is provided at the tip of the power cord.

  A plurality of exhaust holes 25 are formed in the side part of the main body case 6.

  Further, the electric blower 7 has a suction port 26 and an exhaust port 27, and exhausts air sucked from the suction port 26 from the exhaust port 27.

  The cup holder 12 is provided with a dust collection cup 33 which is a dust collector as a dust separator. As shown in FIGS. 1 and 2, the dust collection cup 33 includes an outer wall portion 34, a communication cylinder portion 35 protruding forward of the outer wall portion 34, a downstream side of the communication cylinder portion 35, and an inner side of the outer wall portion 34. An inner wall portion 36 provided, and a partition wall portion 37 provided inside the outer wall portion 34 and behind the inner wall portion 36 are provided.

  The outer wall portion 34 forms the outer peripheral surface of the dust collection cup 33 and is continuous from the front side of the dust collection cup 33 to the upper side and both side portions. Further, the outer wall portion 34 has an upper side whose diameter is increased rearward, and an opening portion 41 which is communicated with a suction port 26 which is a suction side of the electric blower 7 is formed in the rear end portion.

  The communicating cylinder part 35 is provided in a pipe shape and protrudes horizontally toward the front at a position closer to the upper side of the dust collection cup 33. The communication cylinder portion 35 is connected to the main body suction port 14 on the suction side, that is, the upstream side, when attached to the cup holding portion 12.

  The inner wall portion 36 includes an upper inner wall portion 43 that protrudes rearward from the inner side surface of the upper outer wall portion 34 of the communication tube portion 35, and a rear inner wall portion 44 that smoothly curves downward from the rear end portion of the upper inner wall portion 43. And. And, by this inner wall portion 36, on the downstream side of the communication tube portion 35, the front space portion 47 that is the space portion on the front side, that is, the communication tube portion 35 side, and the rear space portion that is the space portion on the rear side, that is, the opening portion 41 side. 48 and 48 are respectively formed.

  Further, in the front space 47, a rectifying plate 51 is projected rearward from the rear part of the communicating cylinder part 35. The rectifying plate portion 51 includes a horizontal portion 51a that protrudes horizontally from the rear portion of the communication tube portion 35, and a vertical portion 51b that protrudes substantially vertically downward from the rear end portion of the horizontal portion 51a. A main air passage MW bent in a substantially L shape is formed in the space 47. Then, by this rectifying plate portion 51, a separation portion 52 that separates the dust sucked into the dust collection cup 33 together with air from the air, and a dust collection portion 53 that collects the dust separated by the separation portion 52. The front space 47 is partitioned.

  The separation unit 52 separates the dust from the air by causing the air containing the dust that has passed through the communication cylinder part 35 to travel straight due to the negative pressure of the electric blower 7.

  The dust collection unit 53 communicates at the upstream side with the downstream side of the separation unit 52 and is positioned below the separation unit 52.

  Further, the upper inner wall portion 43 is inclined downward toward the rear, and forms an upper portion of the separation portion 52. The upper inner wall 43 is provided with an upper communication hole 54 that allows the separation portion 52 and the rear space 48 to communicate with each other. The upper communication hole 54 has a lower end portion located above the upper end portion of the communication cylinder portion 35. The upper communication hole 54 is detachably provided with a mesh-like separation part filter 55. That is, the separation unit filter 55 is provided in the separation unit 52. In addition, the separation unit filter 55 has a surface direction along the flow direction of the suction air flowing from the communication cylinder portion 35 into the separation portion 52. The separation unit filter 55 collects dust contained in the air when a part of the air flowing into the separation unit 52 from the communication tube part 35 passes through the separation part filter 55.

  On the other hand, the rear inner wall portion 44 is provided to be inclined rearward from the rear end portion of the upper inner wall portion 43 to the lower portion of the dust collecting cup 33, and forms the rear portion of the dust collecting portion 53. The rear inner wall portion 44 is provided with a rear communication hole 58 that allows the dust collection portion 53 and the rear space portion 48 to communicate with each other. The rear communication hole 58 is provided at a position closer to the lower side of the rear inner wall portion 44, the upper end portion is located below the horizontal portion 51a of the rectifying plate portion 51, and the lower end portion is from the vertical portion 51b. Is also located on the lower side.

  The rear communication hole 58 is detachably provided with a mesh-shaped dust collecting part filter 59. That is, the dust collecting unit filter 59 is provided in the dust collecting unit 53. For this reason, the dust collecting part filter 59 is located downstream of the separating part filter 55. The dust collecting unit filter 59 has a surface direction along the flow direction of the suction air flowing from the separating unit 52 into the dust collecting unit 53. The dust collecting unit filter 59 passes the air that has passed through the separating unit 52 and has flowed into the dust collecting unit 53, and collects dust contained in the air during the passage.

  The partition wall portion 37 is located in the rear space portion 48, that is, behind the inner wall portion 36, is curved downward from the upper inner surface of the outer wall portion 34 above the upper communication hole 54, and is rear communication hole 58. The lower end is located in the vicinity of the upper end. For this reason, a bypass air passage BW through which the air that has passed through the upper communication hole 54 passes through the separation part filter 55 is partitioned between the partition wall part 37 and the inner wall part 36. That is, the bypass air passage BW is connected to the downstream side of the separation part 52 via the separation part filter 55 via the upper communication hole 54 and the downstream side downstream of the dust collection part filter 59 via the communication opening 61. The diameter is reduced toward the downstream side.

  The communication opening 61 opens substantially vertically downward. Therefore, the air passing through the bypass air passage BW is blown vertically downward toward the downstream surface of the dust collecting unit filter 59 by the communication opening 61.

  As shown in FIG. 1, a lower lid portion 65 that can open and close the lower portion of the dust collecting portion 53 is rotatably provided at the lower portion of the dust collecting cup 33. In addition, a handle portion 66 that allows the dust collection cup 33 to be carried is provided at the lower portion of the communication tube portion 35 of the dust collection cup 33. The handle portion 66 is provided with an operation button (not shown) that opens and closes the lower lid portion 65.

  The filter portion 67 is fitted in the opening 41 of the outer wall portion 34 with the dust collection cup 33 attached to the cup holding portion 12. The filter portion 67 communicates with the suction port 26 of the electric blower 7 and is provided with a pleated filter 68 attached to a mounting frame 69.

  The pleated filter 68 collects fine dust contained in the suction air that has passed through the separation part filter 55 and the dust collection part filter 59, and is fitted into the rear space part 48, so that the vertical direction of the vacuum cleaner main body 1 is obtained. Are provided in a so-called pleated shape that is alternately curved in the front-rear direction of the cleaner body 1 along the width direction of the cleaner body 1. The pleated filter 68 has finer eyes than the filters 55 and 59.

  The mounting frame 69 is provided in a substantially square frame shape, and holds the pleat filter 68 inside.

  The filter portion 67 is located between a partition wall (not shown) provided in the cleaner body 1 and the dust collection cup 33. The partition wall is located in front of the electric blower 7 and partitions an electric blower chamber (not shown) that houses the electric blower 7 and the cup holder 12. The partition wall is provided with a vent hole (not shown) that communicates the cup holder 12 and the electric blower chamber.

  Next, the operation of the first embodiment will be described.

  First, the hose body 15, the extension pipe 21, and the floor brush 22 are sequentially connected to the main body suction port 14, the power cord is led out from the main body case 6, and the plug portion is connected to the outlet.

  Next, the operator operates a predetermined setting button 17 of the hand operation unit 16 to operate the electric blower 7 in a predetermined operation mode, grips the gripping portion 18, and runs the floor brush 22 back and forth on the floor surface. Let it clean.

  Air sucked together with dust from the tip of the floor brush 22 by driving the electric blower 7 becomes suction air and sequentially passes through the extension pipe 21, the hose body 15 and the main body suction port 14, and the dust collection cup from the communication cylinder portion 35. It flows into the separation part 52 in 33.

  The suction air flowing into the separation part 52 is guided straight by the horizontal part 51a of the rectifying plate part 51 and travels straight, collides with the rear inner wall part 44 of the inner wall part 36, and dust is separated by gravity. After that, it is guided to the vertical part 51b and flows into the lower dust collecting part 53 through the main air passage MW.

  The dust separated by gravity falls in the dust collecting cup 33 and is collected in the dust collecting portion 53.

  Further, a part of the suction air flowing into the separation part 52 passes through the upper communication hole 54 via the separation part filter 55 and flows into the bypass air passage BW. At this time, dust contained in the suction air is collected by the separation unit filter 55.

  Then, a part of the suction air flowing into the dust collecting portion 53 goes around from the lower end portion of the vertical portion 51b to the front side of the vertical portion 51b. Further, another part of the suction air flowing into the dust collecting portion 53 passes through the rear communication hole 58 via the dust collecting portion filter 59.

  Here, dust contained in the suction air that could not be separated by the separation unit 52 is collected by the dust collection unit filter 59, and among the dust collected in the dust collection unit, a relatively light weight is included. The air is sucked toward the dust collector filter 59 by the suction air and compressed in the dust collector 53.

  At this time, the suction air flowing into the bypass air passage BW is vertically downstream from the communication opening 61, that is, the downstream surface of the dust collector filter 59 in a direction intersecting with the suction air passing through the dust collector filter 59. To prevent dust from sticking.

  Then, the suction air that has passed through the dust collecting part filter 59 and the suction air blown from the communication opening 61 flow into the rear space 48, pass through the pleated filter 68, and pass through the suction port 26 of the electric blower 7. After flowing into the electric blower 7, it passes through the electric blower 7, becomes exhaust air, is exhausted from the exhaust port 27 to the outside of the electric blower 7, and is discharged from the exhaust hole 25 of the main body case 6 to the vacuum cleaner main body 1. Exhausted to the outside.

  Further, the dust collected by the dust collecting portion 53 can be removed by removing the dust collecting cup 33 from the main body case 6 and operating the operation button with the handle portion 66 held by the operator to open the lower lid portion 65. Discard it in a trash can.

  As described above, according to the first embodiment, the suction air is blown onto the downstream surface of the dust collecting unit filter 59 by the bypass air passage BW communicating with the downstream side of the separating unit filter 55, thereby making a comparison. Therefore, it is possible to suppress sticking of light dust or the like to the dust collecting part filter 59 and to prevent the dust collecting part filter 59 from being clogged.

  As a result, a decrease in the suction force of the electric blower 7 can be suppressed, the amount of dust collection can be improved, and a decrease in dust collection efficiency can be suppressed.

  In particular, the upper communication hole 54 that is the inlet of the bypass air passage BW is provided in the upper part of the separation part 52, so that the flow rate of the suction air passing through the bypass air passage BW is greater than the flow rate of the suction air passing through the main air passage MW. Therefore, the separation unit filter 55 is less likely to be clogged than the dust collection unit filter 59. For this reason, by using the suction air that has passed through the bypass air passage BW via the separation filter 55, which is less likely to be clogged, to suppress clogging of the dust collection filter 59, the dust collection filter 59 can be cleaned. Efficiency can be improved.

  Further, since dust can be prevented from sticking to the dust collecting part filter 59, when the dust collected in the dust collecting cup 33 is discarded to the outside, the dust is easily separated from the dust collecting part filter 59, and maintenance is facilitated. It becomes easy.

  Then, by positioning the lower end portion of the upper communication hole 54 above the upper end portion of the communication tube portion 35, the suction air flowing into the separation portion 52 from the communication tube portion 35 is directly blown to the separation portion filter 55. It is possible to prevent clogging of the separation unit filter 55.

  Similarly, by separating the upper end portion of the rear communication hole 58 below the horizontal portion 51a of the rectifying plate portion 51 projecting horizontally from the lower end portion of the communication tube portion 35, the separation portion is separated from the communication tube portion 35. The suction air that has flowed into 52 is prevented from being directly blown onto the dust collector filter 59 when it flows into the dust collector 53, and clogging of the dust collector filter 59 can be further suppressed.

  Further, by reducing the diameter of the bypass air passage BW from the upstream side to the downstream side, it is possible to increase the wind speed of the suction air blown from the communication opening 61 to the downstream surface of the dust collector filter 59, so that the dust collector Clogging of the filter 59 can be more reliably suppressed.

  Further, by arranging the filters 55 and 59 along the flow direction of the suction air, the dust adhering to the filters 55 and 59 is easily peeled off by the suction air flowing. Maintenance can be made easier.

  In the first embodiment, the suction air passing through the bypass air passage BW is directed to the downstream surface of the dust collector filter 59 in a direction intersecting with the suction air passing through the dust collector filter 59. It was set as the structure sprayed toward a certain vertical downward direction.

  As a result, it is possible to more efficiently suppress dust sticking to the dust collecting unit filter 59 and to the dust collecting unit filter 59 compared to the case where the suction air is blown in parallel to the dust collecting unit filter 59. Compared with the case where the suction air is blown substantially vertically, the suction air passing through the dust collecting part filter 59 from the upstream side to the downstream side interferes with the suction air blown to the dust collecting part filter 59 and sucks it. Can be suppressed.

  Next, the configuration of the second embodiment will be described with reference to FIGS. In addition, about the structure and effect | action similar to the said 1st Embodiment, the same code | symbol is attached | subjected and the description is abbreviate | omitted.

  As shown in FIG. 4, for example, the pair of rear communication holes 58 are provided in a substantially circular shape and are separated from each other in the width direction of the vacuum cleaner. Further, in these rear side communication holes 58, the central portion in the width direction of the dust collection cup 33 is located below the communication opening 61. A dust collector filter 59 is detachably attached to each of the rear side communication holes 58.

  A fan-like cleaning body 71 as a drive cleaning portion is rotatably provided on the downstream surface of each rear communication hole 58. As shown in FIG. 5, the cleaning bodies 71 include a central shaft 71a located at the center of each rear communication hole 58, and a plurality of, for example, four blade portions protruding along the radial direction of the central shaft 71a. 71b and bristle brushes 71c provided on each of the blade portions 71b.

  The central shaft 71a is provided in a substantially cylindrical shape, and projects rearward substantially perpendicularly to the rear inner wall portion 44 of the inner wall portion.

  The blade portions 71b are formed in substantially the same elongated plate shape, and are spaced apart from each other at substantially equal angles in the circumferential direction of the central shaft 71a. The blade portions 71b are provided on the central shaft 71a such that one end portion in the longitudinal direction is inclined at substantially the same angle with respect to the axial direction of the central shaft 71a. Further, in the blade portion 71b, one side portion in the width direction faces the downstream surface of the dust collecting portion filter 59. That is, each blade part 71b is inclined with respect to the surface of the dust collecting part filter 59 in the surface direction. For this reason, the cleaning body 71 is circumferentially centered on the central axis 71a by suction air, which is air passing through the dust collecting part filter 59, or air blown from the communication opening 61 through the bypass air passage BW. Rotate. Further, each blade portion 71b has the other end portion in the longitudinal direction positioned on the outer peripheral portion of the dust collecting portion filter 59.

  The bristle brush 71c is formed of, for example, a flexible synthetic resin, and extends across the longitudinal direction of each blade portion 71b over the entire one side in the width direction facing the rear communication hole 58 of each blade portion 71b. A proximal end portion is provided. The bristle brushes 71c are inserted slightly from the downstream side to the upstream side of the respective dust collecting unit filters 59.

  Then, as shown in FIG. 4, each cleaning body 71 is formed symmetrically with respect to the center line in the width direction of the cleaner body 1. That is, each cleaning body 71 rotates in the opposite direction by the air blown from the communication opening 61 through the bypass air passage BW.

  Next, the operation of the second embodiment will be described.

  The suction air that flows into the bypass air passage BW and blows vertically downward from the communication opening 61 by the same operation as that of the first embodiment, and the suction air that passes through the dust collector filter 59 are each blade portion 71b. By hitting, each blade part 71b of each cleaning body 71 rotates around the central axis 71a.

  Then, the tip of the bristle brush 71c provided on each blade portion 71b is in contact with the downstream side of the dust collecting portion filter 59 while rotating, thereby collecting dust to be attached to the dust collecting portion filter 59. Remove into dust 53.

  As described above, according to the second embodiment, the cleaning body 71 is formed by the suction air that has passed through the separation part filter 55 and has flowed into the bypass air passage BW and the suction air that has passed through the dust collection part filter 59. By rotating and cleaning the downstream surface of the dust collecting unit filter 59, the dust collecting unit filter 59 can be compared with the case where the dust collecting unit filter 59 is cleaned by the suction air blown from the communication opening 61. Clogging can be more reliably suppressed.

  Further, the dust collecting part filter 59 is provided in a circular shape, and each dust collecting part filter 59 is cleaned by the bristle brush 71c provided on the blade part 71b of the rotating cleaning body 71. It is possible to reliably suppress the dust from adhering to the entire dust collecting unit filter 59.

  Then, since the cleaning body 71 is rotated by both the suction air that has passed through the separation part filter 55 and has flowed into the bypass air passage BW and the suction air that has passed through the dust collection part filter 59, the cleaning body 71 is reliably rotated. For example, even when one of the filters 55 and 59 is clogged, the cleaning body 71 can be rotated by the suction air that has passed through the other of the filters 55 and 59. The clogging of the dust filter 59 can be suppressed over a longer period.

  In the second embodiment, for example, when the cleaning body 71 has one dust collecting part filter 59, the cleaning body 71 is provided, or when there are three or more dust collecting part filters 59, The shape and number can be arbitrarily set in accordance with the shape or the number of the dust collecting unit filters 59, such as a configuration in which three or more dust collecting unit filters 59 are provided.

  In addition, it is possible to provide a configuration in which each blade portion 71b of the cleaning body 71 is provided with a member that vibrates the dust collecting portion filter 59 instead of the bristle brush 71c, and the dust collecting portion filter 59 is vibrated and cleaned. .

  Furthermore, the drive cleaning unit is not limited to the cleaning body 71, and various other forms driven by the suction air passing through one of the filters 55 and 59 are possible.

  And a vacuum cleaner can also be set as the structure which combined said each embodiment.

  Moreover, in each said embodiment, the detail of a vacuum cleaner is not limited to the said structure.

It is a longitudinal section showing the vacuum cleaner of a 1st embodiment of the present invention. It is a perspective view which shows a part of vacuum cleaner same as the above. It is a perspective view which shows a vacuum cleaner same as the above. It is a perspective view which shows a part of vacuum cleaner of the 2nd Embodiment of this invention. It is a perspective view which shows the drive cleaning part of a vacuum cleaner same as the above.

Explanation of symbols

1 Vacuum cleaner body 7 Electric blower
52 Separation part
53 Dust collector
55 Separator filter
59 Dust collector filter
71 Cleaning body as drive cleaning part
BW bypass air passage

Claims (3)

A vacuum cleaner body containing an electric blower,
A separation unit for separating dust sucked together with air by the negative pressure of the electric blower;
A separation unit filter provided in the separation unit;
A dust collecting unit for collecting the dust separated by the separating unit;
A dust collecting part filter provided in the dust collecting part and positioned downstream of the separating part filter;
An electric vacuum cleaner comprising: a bypass air passage that communicates with a downstream side of the separation unit filter and blows air onto a downstream side surface of the dust collection unit filter. 2. The vacuum cleaner according to claim 1, wherein the bypass air passage blows air to the dust collector filter in a direction intersecting with the air passing through the dust collector filter. A vacuum cleaner body containing an electric blower,
A separation unit for separating dust sucked together with air by the negative pressure of the electric blower;
A separation unit filter provided in the separation unit;
A dust collecting unit for collecting the dust separated by the separating unit;
A dust collecting part filter provided in the dust collecting part and positioned downstream of the separating part filter;
It is disposed on the downstream surface of the dust collecting unit filter, and is driven by air from at least one of the dust collecting unit filter and the separation unit filter to clean the downstream surface of the dust collecting unit filter. A vacuum cleaner characterized by comprising:

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