JP4008936B2 - Electric vacuum cleaner - Google Patents

Description

  The present invention relates to a vacuum cleaner that captures dust in a dust-containing airflow by a filter having a large number of soots.

Conventionally, a cylindrical filter having a large number of ridges is disposed on the upstream side of the electric blower, and this filter can be rotated by a driving means such as a handle or a motor by hand, and the filter is rotated as the filter is rotated. A dust remover located on the inside (downstream side) that removes dust from the filter by removing the scissors located at the bottom of the filter and disperses the filter clogging on average, resulting in partial strong clogging. Technology to prevent it from happening is known.
Microfilm of actual application No. 54-184129 (No. 55-95650) (page 3, line 14 to page 5, line 16, FIGS. 1 to 2)

  In the technique of Patent Document 1, the upstream end face of the cylindrical filter is closed by the front frame, and the dust-containing air flow sucked from the connection port in front of the front frame bypasses the front frame. Then, after passing from the outside to the inside of the filter, the filter passes through a vent hole formed in the central portion of the support frame that rotatably supports the filter from its downstream side, and is sucked into the electric blower. The connection port and the air hole do not face the filtration portion of the filter. For this reason, the dust-containing airflow must be bypassed as described above. Therefore, while the air flow is concentrated on a specific part of the filtration part of the filter and the part is prevented from clogging ahead of other filtration parts, the clogged state of the cylindrical filter is Proceeding evenly from the entire circumference, it tends to cause a decrease in the dust absorption force.

  Moreover, even if strong clogging occurs in the rotatable cylindrical filter, Patent Document 1 describes how to stop the rotated filter when dust is removed by turning the cylindrical filter. There is no mention of filter rotation control including this point. In Patent Document 1, when a cylindrical filter is turned using a handle after use of a vacuum cleaner, and the rotation is stopped, a portion where the filter is clogged and the air path resistance is large is before dust removal. There is no guarantee that it will be out of position.

  An object of the present invention is to provide a vacuum cleaner capable of automatically dusting a filter having a large number of soot and suppressing air path resistance caused by a clogged portion after dusting.

  The present invention includes a filter drive device that rotates a filter having a large number of soots, a dust removal controller that controls the operation of the device, and an air flow outlet that communicates with an air intake of an electric blower and a position upstream of the air flow outlet. A dust separation case having an air flow passage opening is provided with the filter and a dust removing member for dropping dust from the filter. A part of the front and back surfaces of the filter having the filter rotatably attached to the dust separation case is opposed to the airflow passage opening and the airflow outlet. The filter is rotated by the filter driving device in the operation stop state of the electric blower, and the rotated filter is dusted by the dust removing member. Under the control of the dust removal controller, the stop position of the filter should be shifted so that the part facing the outlet of the filter that was facing the airflow outlet immediately before the start of operation of the filter drive device does not return to the position immediately before the start of operation of the filter drive device. ing.

  ADVANTAGE OF THE INVENTION According to this invention, while being able to dust down the whole filter which has many soots, the vacuum cleaner which can suppress the air path resistance in the filter after this dusting down can be provided.

  An embodiment of the present invention will be described with reference to FIGS.

  Reference numeral 1 in FIG. 1 indicates a canister type vacuum cleaner, for example. The vacuum cleaner 1 includes a cleaner body 2 and a suction member 3 connected thereto. The cleaner body 2 can travel on the floor surface, which is the surface to be cleaned, by wheels or the like that it has. In the front part of the cleaner body 2, for example, a connection port 2 a opened on the front surface is provided. An electric blower 4 is accommodated in the rear part of the cleaner body 2. The electric blower 4 is arranged with its intake port 4a facing forward.

  The suction member 3 that guides dust-containing air to the connection port 2 a includes a dust suction hose 5, an extension pipe 6, and a suction port body 7. The dust suction hose 5 has a connecting cylinder part 5a at one end of a flexible hose body, and a hand operating part 5b at the other end of the hose body.

  The connecting cylinder 5a is plugged into the connecting port 2a. An operation panel 8 provided with operation buttons is attached to the handle portion 5c of the hand operation portion 5b. Various operation commands including on / off control of the electric blower 4 are given to the control device 9 built in the cleaner body 2 by the operation panel 8. The extension pipe 6 is a telescopic type, for example, an upstream pipe 6a and a downstream pipe 6b that are slidably fitted, and the downstream pipe 6b is detachably fitted to the hand operating portion 5b. . The suction port body 7 is detachably fitted to the upstream pipe 6a.

  A dust separation device 11 is disposed on the upstream side of the electric blower 4, for example, at a portion between the connection port 2 a of the cleaner body 2 and the electric blower 4. The dust separation device 11 includes a separation device body 12 and a dust collection case 13.

  The dust collection case 13 is detachably attached to the separation device main body 12 by an insertion / removal operation from above the front portion of the cleaner main body 2. 2, 3, and 6 indicate a handle for insertion / removal operation provided on the upper surface of the dust collecting case 13, and the handle 14 is omitted in FIG. 1.

  As shown in FIG. 7, the space in the dust collection case 13 is formed by a dust movement space 13a extending in the width direction of the cleaner body 2, and a dust storage space 13b continuous downward from the dust movement space 13a. . The lid 15 of the dust collection case 13 facing the dust storage space 13b can be rotated around the hinge 16 (see FIGS. 2, 3, and 6) at the lower end for dust disposal. The closed state of the lid 15 is held by pressing the upper edge of the lid 15 with the holding member 17. The holding member 17 can be moved manually between a position where the upper edge of the lid 15 is not pressed and a position where it is pressed.

  A filter 45 and a filter driving device 55 are attached to the dust separation case 21 provided in the separation device main body 12, and a dust removing member 61 is provided.

  As shown in FIGS. 3 and 6, the dust separation case 21 is formed by connecting a first case member 22 and a second case member 41. The first case member 22 is provided with an airflow inlet 23 protruding forward. This airflow inlet 23 is connected to the connection port 2 a of the cleaner body 2.

  As shown in FIGS. 6 and 7, the first case member 22 includes an intake cylinder 24 and a cylindrical guide wall 25 provided so as to surround the periphery of the intake cylinder 24, and a primary separation chamber 26 is provided therebetween. Forming. The suction cylinder 24 extends in the width direction of the cleaner body 2 and the dust separation case 21, and one end thereof is a transparent member 21 a that forms a part of the first case member 22 and makes the inside of the primary separation chamber 26 visible. Closed. The back wall 27 that faces the transparent member 21a and partitions the primary separation chamber 26 is formed of a spiral wall that gradually approaches the transparent member 21a. A separation chamber inlet 21b (see FIG. 7) is formed between a portion of the back wall 27 that is farthest from the transparent member 21a and a portion that is close to the transparent member 21a, and the separation chamber inlet 21b communicates with the air flow inlet 23. .

  The first case member 22 is provided with, for example, an obliquely upward separation chamber outlet 28, and the separation chamber outlet 28 is opened on the outer surface of the first case member 22 (see FIG. 4). The transparent member 21a and the one end portion of the intake cylinder 24 are integrally formed, and an intake portion, for example, a plurality of intake small holes 24a is provided in the one end portion. The first case member 22 has a wall portion 30 that forms an airflow passage port 29 (see FIG. 5) communicating with the inside of the intake cylinder 24. The airflow passage port 29 is opened toward the second case member 41 so as to face an upstream side surface (surface) of a filter element 48 described later of the filter 45.

  A part of the back wall 27 is provided with a plurality of ventilation windows 27 a with mesh members that communicate the airflow passage ports 29 and the primary separation chamber 26. On the outer surface of the first case member 22, there is provided a vent 31 that opens side by side with the separation chamber outlet 28 as shown in FIGS. 4 and 7. The vent 31 communicates with the airflow passage 29.

  The dust collection case 13 is attached to and detached from the outer surface of the first case member 22 so as to cover the separation chamber outlet 28 and the vent 31. As shown in FIG. 7, the dust collection case 13 is provided with a case inlet 13 c that overlaps and communicates with the separation chamber outlet 28, and a case ventilation window 13 d with a mesh member that overlaps and communicates with the vent 31. ing.

  2 and 4, reference numeral 18 indicates a positioning convex portion formed integrally with the first case member 22, and reference numeral 19 indicates a rotatable locking member attached to the tip of the positioning convex portion 18. Further, reference numeral 13e denotes a positioning groove of the dust collecting case 13. The dust collecting case 13 is positioned on the outer surface of the first case member 22 by fitting the positioning groove 13 e to the positioning convex portion 18. In this state, the dust collecting case 13 is attached to the first case member 22 by rotating the lock member 19 with the user's hand and hooking it on the outer surface of the dust collecting case 13. The dust collecting case 13 can be removed from the first case member 22 in the reverse procedure.

  As shown in FIGS. 4 and 5, the first case member 22 is integrally provided with a shaft portion 32 toward the second case member 41. The shaft portion 32 has a cylindrical shape and is open at the tip. As shown in FIG. 4, the rear portion 22 a of the first case member 22 is formed in a circular shape, and the rear portion 22 a has a guide wall 33. The guide wall 33 has a circular shape drawn around the shaft portion 32.

  As shown in FIG. 4, the rear portion 22 a of the first case member 22 has a bottom wall 22 c positioned on the front side of the guide wall 33. As shown in FIG. 6, the bottom wall 22 c is inclined downward so as to be lowered toward a fine dust outlet 34 described later. The dust removing member 61 drops dust adhering to the filter 45 by, for example, repelling the filter 45, and is integrally projected upward from the bottom wall 22c. The dust removing member 61 is formed in a plate shape that can be elastically deformed in the width direction of the first case member 22.

  As shown in FIG. 6, the primary separation chamber 26 has a fine dust collection part 26a. A part of the air passing through the primary separation chamber 26 can pass through the fine dust collection unit 26a from the inlet 26b via the outlet 26c. A fine dust outlet 34 is formed on the rear portion 22a of the first case member 22 so as to face the bottom wall 22c, and a lid 35 for opening and closing the fine dust outlet 34 is rotatably attached. The lid 35 is always biased in the opening direction by a spring (not shown), and is closed by the intake negative pressure acting on the inside of the rear portion 22a of the first case member 22 as the electric blower 4 is operated (state of FIG. 6). See).

  The second case member 41 is composed of a cover having the same diameter as the rear portion 22a that forms the downstream portion of the first case member 22. As shown in FIGS. 2 and 3, the first case member 22 and the second case member 41 can be removed by fitting the connecting convex portions 36 and 42 projecting radially from them into each other. It is connected by fastening with a screw that does not. The connection convex part 36 of the 1st case member 22 and the connection convex part 42 of the 2nd case member 41 remove | exclude them and connect the 1st case member 22 and the 2nd case member 41 of dust separation case 21. It also functions as a spacer that allows a later-described gear to be arranged at a predetermined interval in the front-rear direction.

  As shown in FIG. 3, the second case member 41 is provided with an airflow outlet 43 protruding rearward. The airflow outlet 43 is closer to the periphery than the center of the second case member 41. As a result, the airflow outlet 43 is shifted obliquely downward rather than just behind the airflow passage opening 29 as shown in FIG. The air flow outlet 43 is in communication with the air inlet 4 a of the electric blower 4.

  As shown in FIGS. 6 and 8, the filter 45 includes a circular wall 46, a filter frame 47, a filter element 48, a plurality of rolling elements 49 including rollers, and a gear 50.

  The circular wall 46 has a smaller diameter than the inner diameter of the guide wall 25, and rolling elements 49 are attached to the outer peripheral portion of the circular wall 46 at intervals along the circumferential direction. The gear 50 is provided integrally with the rear edge of the circular wall 46 so as to project outward in the radial direction. Therefore, the gear 50 has a larger diameter than the circular wall 46.

  The filter frame 47 is smaller than the circular wall 46 and is provided integrally with the front edge of the circular wall 46. The filter frame 47 is provided with a filter element 48 that is shaped so as to have a large number of soot by the filter frame 47 and that filters and separates dust. The filter frame 47 and the filter element 48 form a so-called pleated filter portion. The pleated filter portion has a generally truncated cone shape, and the diameter gradually decreases toward the front side (upstream side). The front end of the filter frame 47 is closed, and a bearing hole 47a that opens to the front side is formed at the center of the filter frame 47 as shown in FIG.

  The filter 45 fits the bearing hole 47a to the shaft portion 32, and makes the rolling element 49 contact the inner peripheral surface of the guide wall 25 so that the filter 45 can rotate along the guide wall 25 about the shaft portion 32. It is supported. By this integration, the filter 45 is disposed with the ridges of the filter element 48 inclined. The gear 50 of the filter 45 protrudes outside the dust separation case 21 through the gap between the first case member 22 and the second case member 41. An annular hermetic seal member (not shown) is sandwiched between the filter 45 and the first case member 22 and the second case member 41.

  As described above, the filter 45 incorporated in the rear portion of the dust separation case 21 forms the upstream chamber A with the rear portion 22 a of the first case member 22, and between the second case member 41. A downstream chamber B is formed. The airflow passage port 29 facing the upstream chamber A faces the surface (upstream side surface) of the pleated filter portion, and the airflow outlet 43 facing the downstream chamber B faces the back surface (downstream side surface) of the pleated filter portion. The dust removing member 61 is located in the upstream chamber A, and the upper end portion of the dust removing member 61 can repel the soot located on the outer peripheral portion of the pleated filter portion when the filter 45 is rotated. , Provided so as to intersect with the rotation trajectory of the ridge located in the outer peripheral portion.

  As shown in FIG. 6, the filter drive device 55 is fixed to the output shaft of the stepping motor 56 and an electric motor such as a stepping motor 56 that is fixed to the second case member 41 of the dust separation case 21 and can control the rotation angle. Drive gear 57. The drive gear 57 has a smaller diameter than the gear 50 of the filter 45 and is engaged with the gear 50. Accordingly, as the stepping motor 56 is operated, the filter 45 is rotated against the frictional resistance of the hermetic seal member.

  The control device 9 includes various electrical components mounted on a circuit board, and controls the overall operation of the electric blower 4 and the like in accordance with an operation command input from the operation panel 8, and a dust removal controller 9a. (See FIG. 1). For convenience of explanation, in FIG. 1, the dust removal controller 9 a is drawn independently from the control device 9.

  The dust removal controller 9a drives the filter when the operation of the electric blower 4 is interrupted for a predetermined time or more by a command from the operation panel 8 during the cleaning operation or when the operation of the electric blower 4 is stopped and the cleaning is finished. The device 55 is driven to control its operation.

  When the number of drive pulses applied to the stepping motor 56 is controlled by the dust removal controller 9a, the filter 45 is rotated to perform automatic dust removal. Under the control of the dust removal controller 9a in this case, the portion of the filter element 48 that is opposed to the airflow outlet 43 immediately before the start of the operation of the filter driving device 55 (this portion is referred to as an outlet-facing portion for convenience) is filtered after dust removal. The stop position of the filter 45 is shifted so that it does not return to the position immediately before the start of the operation of the drive device 55, and the filter 45 is rotated one or more times before the rotation of the filter 45 stops. Yes. In this case, as a preferable example for satisfying the above control conditions by the dust removal controller 9a, the rotation angle of the filter 45 at the time of dust removal may be a multiple of 360 ° (where the multiple is an integer) + 360 °. Furthermore, it is preferable that the angle at which the stop position shifts is larger than the angle between the tangent lines of the airflow outlet 43 drawn through the rotation center of the filter 45.

  By operating the electric blower 4, air containing dust on the floor surface is sucked into the connection port 2 a of the cleaner body 2 through the suction member 3. While the dust-containing air passes through the dust separator 11, the dust-containing air is subjected to dust separation action by inertial separation and dust separation action by filtration separation. The air that has been dust-separated in these two stages flows out of the airflow outlet 43 and flows through the electric blower 4 and is discharged to the outside of the cleaner body 2.

  Dust separation by inertial separation in the first stage is performed as follows. That is, the dust-containing air that has passed through the connection port 2a flows into the primary separation chamber 26 from the airflow inlet 23 through the separation chamber inlet 21b. At this time, the dust-containing air flowing along the inner wall 27 of the primary separation chamber 26 swirls in the primary separation chamber 26, and accordingly, the dust having a large mass such as coarse dust is caused by the centrifugal force acting on the dust. While being moved toward the guide wall 25 side and moving along the guide wall 25, it flows out into the dust moving space 13 a of the dust collecting case 13 through the separation chamber outlet 28 and the case inlet 13 c. On the other hand, since a small amount of cotton dust and a part of air are sucked into the intake small holes 24a of the intake cylinder 24, the large mass dust and air are separated.

  The air sucked inside the intake cylinder 24 flows toward the airflow passage port 29. A part of the air flowing into the primary separation chamber 26 and passing through the ventilation window 27a joins this air flow. Further, air sucked from the dust moving space 13a through the case ventilation window 13d and the ventilation port 31 also merges with the airflow toward the airflow passage port 29. Thus, the air in the dust moving space 13a is sucked toward the airflow passage port 29, whereby the movement of dust having a large mass, such as coarse dust, is promoted in the dust moving space 13a. Is moved to and stored in the dust storage space 13b.

  And the filtration separation in a 2nd step is made as follows. The air that has joined and reached the airflow passage port 29 as described above is blown out from the airflow passage port 29, passes through the filter element 48 of the filter 45, and is filtered. Thereby, fine dust such as cotton dust contained in the air to be passed is captured by the filter element 48. The air that has been purified by passing through the filter element 48 flows out through the airflow outlet 43 as described above, and is sucked into the electric blower 4.

  In the above cleaning, since a negative pressure stronger than the primary separation chamber 26 is acting on the upstream chamber A on the front side of the filter 45, the fine dust outlet 34 is closed by the lid 35 attracted by the negative pressure. Is retained. Therefore, the airflow in the primary separation chamber 26 is not sucked into the upstream chamber A, and the above-described cyclonic inertia separation action is not impaired.

  When the cleaning operation is interrupted for a predetermined time or more and immediately after the cleaning operation is completed, the filter driving device 55 is operated by the dust removal controller 9a of the control device 9, and automatic dust removal of the filter 45 is performed as follows. .

  In this case, since the dust removal controller 9 a applies a predetermined number of drive pulses to the stepping motor 56, the filter 45 is rotated through the meshing between the drive gear 57 and the gear 50 of the filter 45. As a result, each time the soot on the outer peripheral side of the filter element 48 passes through the dust removing member 61, fine dust trapped mainly on the surface of the filter element 48 is dropped as the soot is repelled by the dust removing member 61. The In addition, since the dust removing member 61 repels the lower part of the filter 45 and applies a dust removing operation to the lower part of the filter 45, the dust separated from the surface of the filter element 48 is immediately dropped and does not stay on the surface of the filter element 48. You can

  The rotation of the filter 45 is stopped with the end of the application of the drive pulse. In this case, the dust removal controller 9a controls the operation of the stepping motor 56 so that the rotation angle of the filter 45 is a multiple of 360 ° (where the multiple is an integer) + 360 °.

  Therefore, the filter 45 is rotated once or more, and dust is removed over the entire circumference of the filter 45. At the same time, the outlet facing portion of the filter element 48 facing the air flow outlet 43 in the state immediately before the automatic dusting is shifted so as not to return to the position immediately before the start of the operation of the filter driving device 55, and the filter 45 is moved. Stopped.

  The outlet facing portion faces the air flow outlet 43. And since an airflow tries to pass through the filter 45 intensively through the shortest distance from the airflow passage opening 29 to the airflow outlet 43, the amount of airflow passing through the outlet facing portion is larger than that of other portions. For this reason, the amount of fine dust trapped at the outlet facing portion is larger than the amount of fine dust trapped at the other portion, and therefore, the outlet facing portion exhibits a higher clogging state than the other portion with cleaning. It becomes like this.

  In the control by the dust removal controller 9a, the rotation of the filter 45 can be stopped by disposing the position of the exit-facing portion that is highly clogged as described above at a position that is always shifted from the position immediately before the automatic dust removal. . For this reason, as in the case where the rotation of the filter 45 is stopped at the same position as the position immediately before the highly clogged portion is automatically dusted, the clogging of the filter 45 progresses, that is, the filter 45 On the other hand, it is possible to suppress the progress of clogging of the portion where the airflow is most likely to pass.

  Thus, not only the increase in the air path resistance in the filter 45 is suppressed due to the automatic dust removal, but also the local flow caused by the air flow that concentrates the air flow passage port 29 and the air flow outlet 43 at the shortest distance. Can prevent the clogging of the filter from proceeding. Therefore, in the cleaning after the automatic dust removal, it is possible to suppress an increase in the air path resistance in a portion where the airflow is most likely to pass through the filter 45, and it is possible to suppress a decrease in the dust absorption performance.

  In the above automatic dust removal, every time the dust removing member 61 repels the soot of the filter 45, the dust removing member 61 repeats elastic deformation, so that the vibration associated therewith projects into the first case member 22, particularly the dust removing member 61. It effectively spreads to the installed bottom wall 22c. Therefore, the fine dust that has fallen from the filter 45 to the bottom wall 22c due to the dust removal described above is moved toward the fine dust outlet 34 along the inclination of the bottom wall 22c by vibration.

  Since the electric blower 4 is stopped in a state where automatic dust removal is performed, the lid 35 is separated from the fine dust outlet 34, and the fine dust outlet 34 is opened. Therefore, as described above, fine dust moved by vibration falls through the fine dust outlet 34 to the fine dust collecting portion 26a.

  When the interrupted cleaning is restarted and when cleaning is started again, the fine dust outlet 34 is closed with the lid 35 by the negative intake pressure as described above. On the other hand, a part of the dust-containing airflow swirling in the primary separation chamber 26 flows into the fine dust collecting part 26a from the inlet 26b and then joins the airflow swirling in the primary separation chamber 26 through the outlet 26c. To do. Thus, the fine dust in the fine dust collection unit 26a is collected by the air flowing through the fine dust collection unit 26a. The collected fine dust adheres to coarse dust or the like and is stored in the dust collection case 13.

  The present invention is not limited to the one embodiment. For example, the dust removing member is provided on the downstream side of the filter, for example, on the second case member, and is provided so as to remove dust by applying a dust removing operation, for example, by repelling the filter from the inner peripheral side as the filter rotates. Also good. Further, whether the dust removing member is disposed on the outer peripheral side or the inner peripheral side of the filter, the dust may be removed by, for example, repelling the filter frame without the dust removing member coming into contact with the filter element. In this case, it is preferable in that the risk of damaging the filter element due to repeated contact with the dust removing member can be avoided. Further, the number of dust removing members is not limited to one as in the above-described embodiment, but a plurality of dust removing members may be provided at intervals in the circumferential direction of the filter. Further, the direction of the filter is not limited, and the filter may have a disk shape whose ridges are provided radially. Further, the filter driving device for rotating the filter may be removed from the dust separation case and provided in the cleaner body.

The perspective view which shows the vacuum cleaner of one Embodiment of this invention. The perspective view which shows the dust separation apparatus with which the vacuum cleaner of FIG. The perspective view which shows the dust separation apparatus with which the vacuum cleaner of FIG. The perspective view which shows the dust separation apparatus with which the vacuum cleaner of FIG. 1 is provided seeing from the airflow outlet side in the state which removed the 2nd case member, the filter, and the dust collection case. The rear view which shows a dust separator from the airflow exit side in the state of FIG. The perspective view which cuts off and shows a part of dust separation apparatus with which the vacuum cleaner of FIG. 1 is equipped. The perspective view which shows the dust separation apparatus of the state notched along the F7-F7 line | wire in FIG. The perspective view which shows the filter of the dust separation apparatus with which the vacuum cleaner of FIG. 1 is provided.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 ... Vacuum cleaner, 2 ... Vacuum cleaner main body, 4 ... Electric blower, 4a ... Intake port, 8 ... Operation panel, 9 ... Control device, 9a ... Dust removal controller, 11 ... Dust separation device, 12 ... Separation device main body, 13 DESCRIPTION OF SYMBOLS ... Dust collection case, 21 ... Dust separation case, 22 ... First case member, 23 ... Airflow inlet, 29 ... Airflow passage port, 32 ... Shaft part, 41 ... Second case member, 43 ... Airflow outlet, 45 ... Filter, 47 ... Filter frame, 47a ... Bearing hole, 48 ... Filter element, 50 ... Gear, 55 ... Filter drive device, 56 ... Stepping motor, 57 ... Drive gear, 61 ... Dust removal member

Claims (2)

An electric blower,
A dust separation case disposed on the upstream side of the electric blower, having an air flow outlet communicating with the intake port of the electric blower and an air flow passage port located on the upstream side of the air flow outlet,
A filter having a large number of ridges and rotatably attached to the dust separation case with a part of the front and back surfaces opposed to the airflow passage opening and the airflow outlet;
A filter driving device for rotating the filter in an operation stop state of the electric blower;
A dust removing member that is provided in the dust separation case and that removes dust from the rotating filter;
The operation of the filter driving device is controlled so that the outlet facing portion of the filter that faces the air flow outlet immediately before the start of operation of the filter driving device does not return to the position immediately before the start of operation of the filter driving device. A dust removal controller for shifting the stop position of the filter,
Vacuum cleaner equipped with.   The dust removing member is disposed so as to drop dust below the filter, and the rotation angle of the filter is controlled to be a multiple of 360 ° (where the multiple is an integer) + 360 ° by the dust removal controller. The vacuum cleaner described.

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