JP2009226132A - Vacuum cleaner - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a vacuum cleaner that cleans a surface to be cleaned by cleaning operation using a vacuum cleaner and also removes dust stuck to a dust separation section. <P>SOLUTION: The cleaner body 2 of the vacuum cleaner 1 is equipped with: a connection duct part 11 provided with a connection port 2a; a first separation chamber 13 of a cluster separation chamber 12 communicating with the connection duct part 11; an electric blower 9 communicating with the first separation chamber 13; an exhaust air passage 14 to which exhaust air of the electric blower 9 is discharged; a second separation chamber 15 of the cluster separation chamber 12 communicating with the exhaust air passage 14; a dust collection part 17 communicating with the second separation chamber 15; and a switching mechanism 18 for switching each position of the first and second separation chambers 13 and 15. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a vacuum cleaner having a plurality of separation chambers for separating dust from sucked dust-containing air.

  Conventional vacuum cleaners are generally connected to a vacuum cleaner main body in which an electric blower is housed, a dust collection hose communicated with the vacuum cleaner main body, a hand operation tube communicated with the dust collection hose, and a hand operation tube. An extension pipe and a suction port connected to the extension pipe are provided. A suction opening facing the surface to be cleaned is formed in the suction port body.

  When a conventional vacuum cleaner is operated, a negative pressure is generated in the main body of the vacuum cleaner by the operation of the electric blower. This negative pressure acts on the suction port body through the dust collecting hose, the hand control pipe, and the extension pipe. Then, the vacuum cleaner sucks the dust collected on the surface to be cleaned such as the floor from the suction opening of the suction port body together with the air to clean the surface to be cleaned. The dust-containing air sucked into the suction port body is separated into air and dust by a high-speed separation method or a dust separation means such as a filter built in the cleaner body.

  Dust separated from the dust-containing air is guided and accumulated in the dust collection chamber. On the other hand, the clean air from which the dust has been separated is sucked into the electric blower, pressurized, and discharged from the exhaust port of the cleaner body.

  Here, dust adheres to the dust separating means for filtering and separating dust from the dust-containing air. In particular, fine dust adheres and remains on a fine filter such as a pleated filter that filters fine dust from dust-containing air.

Therefore, in the electric vacuum cleaner described in Patent Document 1, an air flow is generated on the dust filtration surface of the pleat filter in succession to the stopping operation to remove fine dust attached to the pleat filter.
JP 2008-48993 A

  However, in the conventional vacuum cleaner described in Patent Document 1, if the air is continuously passed through the dust filtering surface of the pleat filter continuously with the stop operation of the vacuum cleaner, the user of the vacuum cleaner breaks down the vacuum cleaner. It is difficult to secure a large amount of air that can flow on the dust filtering surface of the pleated filter. If it does so, it will become difficult to fully remove the fine dust adhering to the dust filtration surface of a pleat filter.

  Moreover, in order to remove the dust adhering to the dust separating means provided in the electric vacuum cleaner in addition to the pleated filter, it is necessary to clean each dust separating means individually.

  The present invention proposes a vacuum cleaner that can clean the surface to be cleaned and remove dust adhering to the dust separation means by a cleaning operation using the vacuum cleaner.

  In order to solve the above-described problems, in the present invention, a connection pipe portion provided with a connection port communicated with the suction port body, a separation chamber communicated with the connection pipe portion, and an electric blower communicated with the separation chamber An exhaust air passage through which the exhaust of the electric blower is discharged, another separation chamber communicated with the exhaust air passage, a dust collecting portion communicated with the other separation chamber, the separation chamber, and the other And a switching mechanism for switching the arrangement of the separation chambers.

  ADVANTAGE OF THE INVENTION According to this invention, the vacuum cleaner which can remove the dust adhering to a dust separation means can be proposed with the cleaning operation | movement using a vacuum cleaner while cleaning a to-be-cleaned surface.

  Embodiments of a vacuum cleaner according to the present invention will be described with reference to FIGS. 1 to 3.

  FIG. 1 is a view showing an appearance of a vacuum cleaner according to the present invention.

  As shown in FIG. 1, a vacuum cleaner 1 according to this embodiment includes a vacuum cleaner main body 2, a dust collection hose 3 having one end connected to a connecting port 2 a provided in the vacuum cleaner main body 2, and a detachable white background. The hand operation tube 4 having one end provided at the other end of the dust collecting hose 3, the extension tube 5 having one end detachably connected to the other end of the hand operation tube 4, and the other end of the extension tube 5 are detachable And a suction port body 6 connected to.

  The hand operating tube 4 is provided with an operation unit 4a. The operation unit 4a includes a turn-off switch 4b for stopping the operation of the electric vacuum cleaner 1, an activation switch 4c for starting the operation of the electric vacuum cleaner 1, and the like.

  A suction opening (not shown) facing the surface to be cleaned is formed on the lower surface of the suction port body 6. The suction opening communicates with a suction chamber (not shown) formed in the suction port body 6. This suction opening is communicated with the inside of the cleaner body 2 from the connection port 2a through the extension pipe 5, the hand operation pipe 4, and the dust collecting hose 3.

  The vacuum cleaner main body 2 accommodates an electric blower 9 that applies a negative pressure to the suction port body 6 through the connection port 2a. The vacuum cleaner body 2 is formed with a main body exhaust port (not shown) through which the exhaust from the electric blower 9 is discharged.

  When the electric vacuum cleaner 1 is operated, a negative pressure acts on the vacuum cleaner body 2 by the operation of the electric blower 9. The negative pressure acts on the suction port body 6 through the dust collection hose 3, the hand operation tube 4, and the extension tube 5 from the connection port 2 a. If it does so, the vacuum cleaner 1 will inhale the dust which collected on the to-be-cleaned surfaces, such as a floor, with air from the suction opening of the suction inlet body 6, and will clean a to-be-cleaned surface.

  FIG. 2 is a schematic cross-sectional view of the vacuum cleaner body of the electric vacuum cleaner according to the present invention.

  In addition, the solid line arrow shown in FIG. 2 is the direction of the air flow.

  As shown in FIG. 2, the vacuum cleaner body 2 includes a connection pipe portion 11 provided with a connection port 2 a, a first separation chamber 13 of a cluster separation chamber 12 communicated with the connection pipe portion 11, and a first separation chamber 13. The electric blower 9 communicated with the separation chamber 13, the exhaust air passage 14 through which the exhaust of the electric blower 9 is discharged, the second separation chamber 15 of the cluster separation chamber 12 communicated with the exhaust air passage 14, and the second The positions of the dust removing mechanism 16 for removing the dust accumulated in the separation chamber 15, the dust collecting portion 17 communicating with the second separation chamber 15, and the first separation chamber 13 and the second separation chamber 15 are switched. And a switching mechanism 18.

  As shown in FIG. 2, the vacuum cleaner body 2 includes a connection pipe portion 11 provided with a connection port 2 a, a first separation chamber 13 of a cluster separation chamber 12 communicated with the connection pipe portion 11, and a first separation chamber 13. The electric blower 9 communicated with the separation chamber 13, the exhaust air passage 14 through which the exhaust of the electric blower 9 is discharged, the second separation chamber 15 of the cluster separation chamber 12 communicated with the exhaust air passage 14, and the second A dust removal mechanism 16 for removing dust accumulated in the separation chamber 15, a dust collection unit 17 communicated with the second separation chamber 15, and a switching mechanism 18 for the cluster separation chamber 12.

  The cluster separation chamber 12 includes at least two separation chambers. In the present embodiment, the cluster separation chamber 12 includes a first separation chamber 13 and a second separation chamber 15. In the cluster separation chamber 12, the position of the separation chamber is changed by the switching mechanism 18. Specifically, when the positions of the first separation chamber 13 disposed upstream of the electric blower 9 and the second separation chamber 15 disposed downstream of the electric blower 9 are switched, the second separation is performed. The chamber 15 is disposed upstream of the electric blower 9, and the first separation chamber 13 is disposed downstream of the electric blower 9. For example, the cluster separation chamber 12 is formed in a cylindrical shape, and the first separation chamber 13 and the second separation chamber 15 are defined by a common partition that passes through the center of the cluster separation chamber 12. That is, the first separation chamber 13 and the second separation chamber 15 are partitioned and formed in a semicylindrical shape. Further, for example, the cluster separation chamber 12 is formed in a cylindrical shape, and three or more separation chambers are partitioned and formed substantially equally in the circumferential direction.

  The position where the first separation chamber 13 or the second separation chamber 15 is disposed upstream of the electric blower 9 is called a dust collection position, and the first separation chamber 13 or the second separation chamber 15 is A position in the case where it is disposed downstream of the electric blower 9 is referred to as a dust removal position.

  When three or more separation chambers are provided in the cluster separation chamber 12, any one or more separation chambers can be disposed at the dust collection position, and other dust collection chambers can be disposed at the dust removal position. .

  The first separation chamber 13 includes first dust separation means 19 for filtering and separating dust from the dust-containing air, and the second separation chamber 15 is second dust separation means for filtering and separating dust from the dust-containing air. 21 is provided. The first dust separation means 19 and the second dust separation means 21 are composed of a net filter portion 22 and a pleat filter portion 24. When the first separation chamber 13 or the second separation chamber 15 is disposed at the dust collection position, the net filter portion 22 is disposed upstream of the flow of the dust-containing air, while the pleated filter portion 24 is the net filter. Arranged downstream of the portion 22. When the first separation chamber 13 or the second separation chamber 15 is disposed at the dust removal position, the pleat filter unit 24 is disposed upstream of the exhaust flow of the electric blower 9, while the net filter unit 22 is disposed. Is disposed downstream of the pleated filter portion 24. The first separation chamber 13 and the second separation chamber 15 have openings 26 and 27 upstream and downstream of the respective net filter portions 22. The first fine dust air passage portion 28 composed of the openings 26 and 27 of the first separation chamber 13 disposed at the dust collection position is closed by the closing plate 29, and the second separation disposed at the dust removal position. The second fine dust air passage portion 31 including the openings 26 and 27 of the chamber 15 is communicated with the bypass pipe 30.

  The cluster separation chamber 12 includes a first partition wall 32 facing the net filter portion 22 provided in the first separation chamber 13 and the second separation chamber 15, and the first separation chamber 13 and the second separation chamber. 15 is sandwiched between second partition walls 33 that face the pleated filter portion 24 provided at 15. The first separation chamber 13 and the second separation chamber 15 are partitioned by the first partition wall 32 and the second partition wall 33.

  A connection port 2 a to which the dust collecting hose 3 is connected is provided at one end of the connection pipe portion 11. The dust-containing air sucked from the suction port body 6 by the connecting pipe portion 11 is guided to the cluster separation chamber 12. The other end of the connecting pipe portion 11 is communicated with a dust collection position upstream opening 35 formed in the partition wall 32 a located on the upstream side of the first separation chamber 13 in the first partition wall 32. The dust collection position upstream opening 35 communicates with the first separation chamber 13 which is a separation chamber disposed at the dust collection position. A dust collection position downstream opening 36 is formed in the partition wall 33 a located on the downstream side of the first separation chamber 13 in the second partition wall 33.

  The suction opening 37 of the electric blower 9 communicates with the dust collection position downstream opening 36 of the second partition wall 33 through the suction pipe 38. The exhaust opening 39 of the electric blower 9 communicates with the exhaust air passage 14. The exhaust air passage 14 is in a dust removal position upstream opening 41 formed in a partition wall 33b located upstream of the second separation chamber 15 which is a separation chamber disposed in the dust removal position of the second partition wall 33. Communicated.

  That is, the first separation chamber 13 is disposed on the upstream side of the electric blower 9 and the second separation chamber 15 is disposed on the downstream side of the electric blower 9 and communicates with the exhaust air passage 14.

  A dust removal position downstream opening 42 is formed in the partition wall 32 b located on the downstream side of the second separation chamber 15 in the first partition wall 32. The dust removal position downstream opening 42 communicates with the dust collection unit 17.

  The dust removing mechanism 16 is disposed to face the pleated filter portion 24 of the second separation chamber 15 with the second partition wall 33 interposed therebetween. The dust removing mechanism 16 is provided with a dust remover 44 and is brought into contact with the pleated filter portion 24 through an opening 45 formed in the second partition wall 33.

  The dust collection unit 17 includes a dust collection chamber upstream opening 47 communicated with the dust removal position downstream opening 42 of the first partition wall 32, a dust collection filter 48 that filters and separates dust from the dust-containing air flowing into the dust collection unit 17, And a dust collection chamber downstream opening 49 provided with a dust collection filter 48, and accumulates the separated dust.

  The switching mechanism 18 includes a power transmission mechanism 52 including a driving gear portion 51 corresponding to a driven gear portion 50 formed in the cluster separation chamber 12, and a motor portion 53 that generates a driving force of the power transmission mechanism 52. For example, when the cluster separation chamber 12 is formed in a cylindrical shape, and the first separation chamber 13 and the second separation chamber 15 are partitioned and formed in a semi-cylindrical shape, the switching mechanism 18 has a central axis of the cluster separation chamber 12. The cluster separation chamber 12 is rotated around r to switch the first separation chamber 13 and the second separation chamber 15 to the dust collection position and the dust removal position, respectively.

  Next, the cleaning operation of the electric vacuum cleaner 1 according to the present embodiment will be described.

  First, the user of the vacuum cleaner 1 connects the dust collecting hose 3, the hand operation tube 4, the extension tube 5, and the suction port body 6 in order to the connection port 2 a of the vacuum cleaner body 2.

  Next, a power cord (not shown) is pulled out from the cleaner body 2 and connected to an outlet (not shown) for supplying commercial power. At this time, in the cluster separation chamber 12, as shown in FIG. 2, the first separation chamber 13 is disposed at the dust collection position, and the second separation chamber 15 is disposed at the dust removal position.

  Next, the hand control tube 4 is held and the start switch 4c of the operation unit 4a is operated. Then, the electric blower 9 starts operation. The electric blower 9 sucks air from the suction opening 37, and negative pressure sequentially acts on the suction pipe 38, the first separation chamber 13, and the connection pipe portion 11 of the cleaner body 2. Furthermore, a negative pressure is also applied to the dust collecting hose 3, the hand operating tube 4, the extension tube 5, and the suction port body 6 sequentially through the connection port 2 a of the cleaner body 2.

  Next, the user grips the hand operating tube 4 and travels forward and backward through the suction port body 6 on the surface to be cleaned such as the floor surface. If it does so, the dust which exists on a to-be-cleaned surface will be suck | inhaled by the suction inlet body 6 with air.

  The dust-containing air sucked into the suction port body 6 is sucked into the cleaner body 2 through the extension tube 5, the hand operation tube 4 and the dust collecting hose 3 in order.

  The dust-containing air sucked into the cleaner body 2 is sucked into the first separation chamber 13 through the connecting pipe portion 11. The dust-containing air sucked into the first separation chamber 13 is separated into dust and air by the first dust separation means 19. Specifically, in the dust-containing air, coarse dust A is separated by the net filter part 22, and fine dust B is separated by the pleat filter part 24. Therefore, the dust contained in the dust-containing air is collected in the first separation chamber 13. At this time, the coarse dust A is collected by the net filter unit 22, and the fine dust B is collected by the pleated filter unit 24.

  The air from which the dust has been separated is sucked into the suction opening 37 of the electric blower 9 from the first separation chamber 13 via the dust collection position downstream opening 36 of the second partition wall 33 and the suction pipe 38. The air sucked into the electric blower 9 is exhausted from the exhaust opening 39 of the electric blower 9 to the exhaust air passage 14 and flows into the second separation chamber 15 through the dust removal position upstream opening 41 of the second partition wall 33.

  The air that has flowed into the second separation chamber 15 reaches the dust removal position downstream opening 42 of the first partition wall 32 through the second dust separation means 21, and flows into the dust collection portion 17 from the dust collection chamber upstream opening 47. The air flowing into the dust collection unit 17 is exhausted from the dust collection chamber downstream opening 49 through the dust collection filter 48, and further exhausted from the cleaner body 2 through the main body exhaust port.

  When the cleaning of the surface to be cleaned is finished, the user operates the off switch 4b of the hand control tube 4. Then, the electric blower 9 stops operation.

  When the operation of the electric blower 9 stops and the negative pressure no longer acts on the vacuum cleaner 1, the motor unit 53 of the switching mechanism 18 operates and the drive gear unit 51 rotates. Then, the switching mechanism 18 changes the positions of the first separation chamber 13 and the second separation chamber 15 of the cluster separation chamber 12 via the driven gear unit 50. Specifically, the positions of the first separation chamber 13 disposed at the dust collection position and the second separation chamber 15 disposed at the dust removal position are switched, and the second separation chamber 15 is collected by dust. The first separation chamber 13 is disposed at the dust removal position.

  FIG. 3 is a schematic cross-sectional view of the vacuum cleaner body of the electric vacuum cleaner according to the present invention.

  In addition, the solid line arrow shown in FIG. 3 is the direction of the flow of air.

  As shown in FIG. 3, when the switching mechanism 18 operates, the positions of the first separation chamber 13 and the second separation chamber 15 of the cluster separation chamber 12 are switched, and the second separation chamber 15 is brought to the dust collection position. The first separation chamber 13 is disposed at the dust removal position.

  Then, the second fine dust air passage portion 31 of the second separation chamber 15 disposed at the dust collection position is closed by the closing plate 29, and the first separation chamber 13 disposed at the dust removal position is closed. One fine dust passage portion 28 is communicated by a bypass pipe 30. The connecting pipe portion 11 communicates with the second separation chamber 15 through a dust collection position upstream opening 35 formed in the partition wall 32 a located on the upstream side of the second separation chamber 15 in the first partition wall 32. Is done. The dust collection position downstream opening 36 formed in the partition wall 33 a of the second partition wall 33 is positioned on the downstream side of the second separation chamber 15. The dust removal position upstream opening 41 formed in the partition wall 33 b of the second partition wall 33 is positioned on the upstream side of the first separation chamber 13. In other words, the second separation chamber 15 is disposed on the upstream side of the electric blower 9 and the first separation chamber 13 is disposed on the downstream side of the electric blower 9 by the exhaust air passage 14. The dust removal position downstream opening 42 formed in the partition wall 32 b of the first partition wall 32 is located on the downstream side of the first separation chamber 13. The dust removal mechanism 16 is opposed to the pleated filter portion 24 of the first separation chamber 13 with the second partition wall 33 interposed therebetween. The dust remover 44 of the dust removal mechanism 16 is brought into contact with the pleated filter portion 24 provided in the first separation chamber 13.

  Next, the cleaning operation when cleaning is resumed using the electric vacuum cleaner 1 according to the present embodiment will be described. In addition, the description which overlaps about operation | movement of the vacuum cleaner 1 is abbreviate | omitted.

  The user operates the start switch 4c of the operation unit 4a to start or resume cleaning newly or continuously. Then, the electric blower 9 starts operation and negative pressure acts on the suction port body 6. The dust-containing air sucked into the suction port body 6 is sucked into the cleaner body 2.

  The dust-containing air sucked into the cleaner body 2 is sucked into the second separation chamber 15 through the connecting pipe portion 11. The dust-containing air sucked into the second separation chamber 15 is separated into dust and air by the second dust separation means 21.

  The air from which the dust has been separated is sucked into the suction opening 37 of the electric blower 9 from the second separation chamber 15 through the dust collection position downstream opening 36 of the second partition wall 33 and the suction pipe 38. The air sucked into the electric blower 9 is exhausted from the exhaust opening 39 of the electric blower 9 to the exhaust air passage 14 and flows into the first separation chamber 13 through the dust removal position upstream opening 41 of the second partition wall 33.

  The air flowing into the first separation chamber 13 passes through the first dust separation means 19, reaches the dust removal position downstream opening 42 of the first partition wall 32, and flows into the dust collection portion 17 from the dust collection chamber upstream opening 47.

  At this time, the dust removal mechanism 16 operates, and the dust remover 44 continuously strikes the pleat peaks of the pleat filter portion 24. And the fine dust B which the pleat filter part 24 collected when the vacuum cleaner 1 was used last time peels from the pleat filter part 24 whenever the dust remover 44 hits the peak part of the pleats of the pleat filter part 24. .

  Here, the air passing through the first dust separating means 19 first passes through the pleated filter part 24, then branches, and part flows through the bypass pipe 30 downstream of the net filter part 22, and the other part It passes through the net filter unit 22 and flows downstream of the net filter unit 22.

  Then, the fine dust B peeled off from the pleat filter part 24 flows downstream of the net filter part 22 through the bypass pipe 30 together with air. On the other hand, the coarse dust A adhering to the net filter unit 22 when the vacuum cleaner 1 was used last time is peeled off from the net filter unit 22 by the air passing through the net filter unit 22, and downstream of the net filter unit 22 together with the air. Flowing.

  Therefore, the air that has flowed into the first separation chamber 13 flows into the dust collecting portion 17 together with the dust collected in the first dust separating means 19 when the vacuum cleaner 1 was used last time.

  The dust-containing air that has flowed into the dust collection unit 17 is again separated into air and dust by the dust collection filter 48. The separated air is exhausted from the dust collection chamber downstream opening 49 through the dust collection filter 48 and further exhausted from the cleaner body 2 through the main body exhaust port. On the other hand, the separated dust is accumulated in the dust collecting unit 17.

  When the cleaning of the surface to be cleaned is finished, the user operates the off switch 4b of the hand control tube 4. Then, the electric blower 9 stops operation.

  When the operation of the electric blower 9 stops and the negative pressure no longer acts on the vacuum cleaner 1, the switching mechanism 18 is connected to the first separation chamber 13 and the second separation chamber of the cluster separation chamber 12 via the driven gear unit 50. Change the position with 15. Specifically, the positions of the second separation chamber 15 disposed at the dust collection position and the first separation chamber 13 disposed at the dust removal position are switched, so that the first separation chamber 13 collects the dust. The second separation chamber 15 is disposed at the dust removal position.

  Note that the position of the first separation chamber 13 and the second separation chamber 15 is switched because the operation of the electric blower 9 stops and no negative pressure acts on the vacuum cleaner 1, that is, the inside of the vacuum cleaner 1. If is a state of positive pressure, it may be before the operation of the electric vacuum cleaner 1 or after it is stopped.

  When the dust accumulated in the dust collecting unit 17 is discarded after the cleaning is finished, the dust collecting unit 17 is removed from the cleaner body 2 and the cover (not shown) of the dust collecting unit 17 is opened to remove the dust from the dust collecting unit 17. Throw away.

  According to the vacuum cleaner 1 according to the present embodiment, the vacuum cleaner 1 includes the cluster separation chamber 12 having a plurality of separation chambers provided with dust separation means for separating dust from dust-containing air, and is upstream of the electric blower 9, that is, a dust collection position. A separation chamber is disposed downstream of the electric blower 9, that is, at the dust removal position, and the separation chamber located at the dust collection position and the separation chamber located at the dust removal position are mutually connected each time the vacuum cleaner 1 is operated. By changing the position, the dust attached to the dust separating means can be removed using the exhaust of the electric blower 9.

  Further, since the exhaust air flow of the electric blower 9 always passes through the dust separating means of the separation chamber located at the dust removal position while the vacuum cleaner 1 is in operation, the dust attached to the dust separating means can be sufficiently removed. it can.

  Further, since the exhaust flow of the electric blower 9 passes from the back side of the surface on which the collected dust is attached to the dust separation means in the separation chamber located at the dust removal position, the dust attached to the dust separation means is removed. It can be easily removed.

  The vacuum cleaner according to the present invention is not limited to the canister type vacuum cleaner 1 but may be an upright type, a stick type, or a handy type vacuum cleaner.

The figure which showed the external appearance of the vacuum cleaner which concerns on this invention. The schematic sectional drawing of the vacuum cleaner main body of the vacuum cleaner which concerns on this invention. The schematic sectional drawing of the vacuum cleaner main body of the vacuum cleaner which concerns on this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Electric vacuum cleaner 2 Vacuum cleaner main body 2a Connection port 3 Dust collection hose 4 Hand operation pipe 4a Operation part 4b Off switch 4c Start switch 5 Extension pipe 6 Suction port body 9 Electric blower 11 Connection pipe part 12 Cluster separation chamber 13 1st Separation chamber 14 Exhaust air passage 15 Second separation chamber 16 Dust removal mechanism 17 Dust collection unit 18 Switching mechanism 19 First dust separation unit 21 Second dust separation unit 22 Net filter unit 24 Pleated filter units 26, 27 Opening 28 First 1 fine dust air passage portion 29 obstruction plate 30 bypass pipe 31 second fine dust air passage portion 32 first partition wall 32a partition wall 32b partition wall 33 second partition wall 33a partition wall 33b partition wall 35 upstream of dust collection position 36 Dust collection position downstream opening 37 Suction opening 38 Suction pipe 39 Exhaust opening 41 Dust removal position upstream opening 42 Dust removal position downstream opening 44 Dust removal element 45 Opening 47 Dust collection chamber upstream opening 48 Dust collection window Filter 49 dust collecting chamber downstream opening 50 the driven gear portion 51 drive gear unit 52 power transmission mechanism 53 motor

Claims (6)

A connecting pipe portion provided with a connection port communicated with the suction port body;
A separation chamber communicated with the connecting pipe portion;
An electric blower communicated with the separation chamber;
An exhaust air passage through which the exhaust of the electric blower is discharged;
Another separation chamber communicated with the exhaust air passage;
A dust collection unit communicated with the other separation chamber;
A vacuum cleaner comprising: a switching mechanism for switching between the separation chamber and the other separation chamber. The separation chamber and the other separation chamber are:
2. The electric vacuum cleaner according to claim 1, further comprising dust separation means including a net filter and a pleat filter. The vacuum cleaner according to claim 2, further comprising a bypass pipe that communicates the upstream side and the downstream side of the net filter of the other separation chamber. The vacuum cleaner according to claim 2, further comprising a dust removal mechanism that removes dust accumulated in the pleated filter of the other separation chamber. The arrangement of the separation chamber and the other separation chamber is switched by the switching mechanism when the inside of the vacuum cleaner is in a positive pressure state. Electric vacuum cleaner. The vacuum cleaner according to any one of claims 1 to 5, wherein a plurality of the separation chambers or the other separation chambers are provided.

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