JP2008272020A - Dust collecting device and vacuum cleaner - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a dust collecting cup suppressing the increase in load on an electric blower due to clogging of a filter. <P>SOLUTION: A restrictor 91 for rectifying air sucked from a projecting pipe portion 85 to a centrifugal separation portion 31 faces half or more of the area of a communication port 53 through a space portion 98. The restrictor 91 suppresses direct adhesion of dust in the sucked air to the filter 62. The space portion 98 serves as an air trunk for partially reintroducing the air rectified on the downstream side of the centrifugal separation portion 31 to the upstream side of the centrifugal separation portion 31. The air flow reintroduced to the upstream side of the centrifugal separation portion 31 through the space portion 98 scrapes the dust adhering to the filter 62. The increase in load on the electric blower due to clogging of the filter 62 is suppressed. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a dust collector having a separating portion that separates air containing dust in one direction and the other direction, and a vacuum cleaner including the dust collector.

Conventionally, this type of vacuum cleaner includes a vacuum cleaner body that houses an electric blower. The vacuum cleaner main body is configured to be detachably connected to the suction side of the electric blower so as to be detachable as a dust collector. The dust collecting cup includes a regulating member that rotates a part of the sucked air, a separation unit that centrifuges dust contained in the air, and a first unit that collects the dust centrifuged by the separation unit. And a dust collecting part. In addition, the dust collecting cup is provided with a filter at a communication port through which air separated from the separated air separately from the swirled air passes, and the communication port passes through the communication port on the downstream side of the communication port. A filter body, which is a second dust collecting portion that collects dust contained in the air, is provided (see, for example, Patent Document 1).
Japanese Patent Laying-Open No. 2004-267636 (page 4-5, FIG. 3)

  However, in the dust collecting cup of the vacuum cleaner described above, a part of the air sucked into the separation part directly passes through the entire filter, so that dust easily adheres to the filter. It has the problem of increasing.

  This invention is made | formed in view of such a point, and it aims at providing the dust collector which can suppress the increase in the load of the electric air blower by clogging of a filter, and a vacuum cleaner provided with the same.

  The present invention includes a filter that collects a part of dust sucked by the suction part, a separation part that separates the air sucked by the suction part, and a part of the air separated by the separation part. A first dust collecting part for collecting dust contained in the air, a second dust collecting part for collecting the dust contained in the air separated by the separation part and passed through the separation part, and a suction A regulating member that is continuously provided in the part and rectifies the air sucked in by the separation part into a separation air path, and is opposed to the area part of more than half of the separation part via a predetermined space part, The space portion is an air passage in which a part of the downstream side of the air rectified to the separation air passage reenters the upstream side of the separation air passage.

  According to the present invention, the regulating member that rectifies the air sucked by the suction portion into the separation air path is opposed to the area portion of more than half of the separation portion that separates the air sucked by the suction portion through the predetermined space portion. In this way, it is possible to suppress the dust contained in the sucked air from directly adhering to the filter by the regulating member, and to remove the part of the air rectified to the downstream side of the separation air passage from the space portion. By using the air path that re-enters the upstream side, the dust that adheres to the filter is removed by the air flow re-entering the upstream side of the separation air path through the space, and the filter is clogged. An increase in the load of the blower can be suppressed.

  Hereinafter, the configuration of a vacuum cleaner according to an embodiment of the present invention will be described with reference to FIGS. 1 to 7.

  In FIG. 7, reference numeral 1 denotes a vacuum cleaner main body. The vacuum cleaner main body 1 can be opened and closed in a vertical direction in which a main body case 3 housing an electric blower 2 and a rear portion pivotally supported by the main body case 3 are pivotally supported. A lid 4 and a dust collecting cup 5 as a dust collecting device that is located upstream of the electric blower 2 and can be attached to and detached from the main body case 3 are provided to collect the dust sucked together with the suction air generated by driving the electric blower 2. It is a so-called cyclonic vacuum cleaner that collects dust by centrifugal separation with a dust cup 5 and can travel on the floor as a surface to be cleaned.

  The main body case 3 accommodates a cord reel 7 around a power cord (not shown) that enables power supply from a commercial AC power source (not shown) to the electric blower 2 and the like below the electric blower 2. A dish-shaped placement portion 8 is provided at the front portion of the main body case 3. The mounting portion 8 is a portion on which the dust collection cup 5 is detachably mounted, and when the lid 4 is closed, the dust collection cup 5 can be sandwiched and fixed between the lid 4.

  As shown in FIGS. 5 and 6, the lid 4 is provided with a tube portion 11 at the front portion, and the front portion, which is the tip portion of the tube portion 11, becomes a hose connection port 12 for sucking air, A rear portion that is a base end portion of 11 is a main body suction port 13 that communicates with the suction side of the dust collection cup 5 fixed to the mounting portion 8.

  As shown in FIG. 7, a base end portion of an elongated substantially cylindrical hose body 15 that is flexible and can be bent is connected to the hose connection port 12. A hand operation unit 16 capable of selecting an operation mode of the electric blower 2 is provided at the tip of the hose body 15. The hand operating section 16 is provided with a gripping section 17 that is gripped by an operator, and the gripping section 17 is provided with a plurality of setting buttons 18 for setting the electric blower 2 and the like to a plurality of operation modes. .

  In addition, a telescopic elongated cylindrical extension tube 21 is detachably connected to the distal end of the hand operation unit 16. Further, the extension pipe 21 is detachably connected to a floor brush 22 that is placed on, for example, a carpet on the floor surface of a room and sucks dust on the carpet. Yes.

  On the other hand, an annular packing 23 that is an O-ring as a sealing member is attached to the downstream end face of the main body suction port 13 as shown in FIG.

  The dust collecting cup 5 includes a dust collecting container main body 25 as an apparatus main body, and an air path forming body 26 having a substantially circular shape in plan view is detachably provided on the upper part of the dust collecting container main body 25. A bottom lid 27 as a dust collector lid is pivotally supported at the bottom of the main body 25 so as to be openable and closable. Further, the dust collecting cup 5 is provided with a centrifugal separator 31 that is a cyclone separating air passage as a separating air passage between the dust collecting container body 25 and the air passage forming body 26. Further, in the dust collecting container body 25 of the dust collecting cup 5, the air in the swirl direction, which is a part of the air separated by the centrifugal separator 31, is located below the centrifugal separator 31 (downstream). A dust collecting part 32 as a first dust collecting part that is sucked together with coarse dust that is a part is partitioned, and separated from the upper part of the dust collecting part 32 to the rear side by the centrifugal separator 31 downstream of the centrifugal separator 31. The negative pressure chamber portion 33 into which the air in the straight direction, which is the other direction, is sucked, is partitioned, and is centrifuged at the rear side of the negative pressure chamber portion 33 and downstream of the dust collecting portion 32. A pleat filter part 34 as a second dust collecting part that collects fine dust that is the remainder of the dust separated by the part 31 is detachably provided, and the pleat filter part 34 is provided below the pleated filter part 34. A fine dust collecting part 35 is formed as a third dust collecting part in which fine dust removed from the container is stored. To have.

  The dust collection container main body 25 includes a wall portion 36 that forms an outer shell extending from the front portion to both side portions of the dust collection cup 5, and an inclined wall portion as a partition wall portion that blocks the upper portion of the wall portion 36 and continues in an inclined manner. The upper wall portion 37 and a partition wall 38 as a partition wall portion provided continuously below the upper wall portion 37 and inside the wall portion 36 are provided.

  A grip 41 for gripping the dust collecting cup 5 is provided at the front of the wall 36. The lower end portion of the wall portion 36 is a waste opening 42 that communicates with the lower portions of the dust collection portion 32 and the fine dust collection portion 35 and can be opened and closed by the bottom lid 27.

  The disposal opening 42 allows the dust contained in the dust collection part 32 and the fine dust collection part 35 to be disposed outside the dust collection cup 5.

  The upper wall portion 37 forms the bottom surface of the centrifuge portion 31 and is located between the centrifuge portion 31 and the dust collecting portion 32, and is formed to be inclined downward toward the front side. Yes. Further, as shown in FIGS. 2 and 3, the upper wall portion 37 is formed with a circular portion 51 having a circular shape in a plan view formed along the outer shape of the air passage forming body 26. Is formed with a circular ventilation opening 52 in the center, and a communication port 53 as a separation part is formed on the left side of the figure, which is one side of the ventilation opening 52, and the ventilation opening. On the right side in the figure, which is the other side of 52, a rear end opening 54 as a communication opening is formed.

  The ventilation opening 52 is provided with a dust separation portion 56 that is a projection as a first dust separation means. The dust separator 56 includes a frame 57 formed in a truncated cylindrical shape, and a net filter 58 as a first dust separator provided in an opening 57a of the frame 57. The centrifuge 31 and the negative pressure chamber 33 are communicated with each other through the opening 57a and the ventilation opening 52.

  Here, the opening 57a bypasses a part of the air flow toward the dust collecting unit 32 to the pleated filter unit 34 through the negative pressure chamber 33, and collects fine dust by the net filter 58. By doing so, it is for extending the suction force of a vacuum cleaner and improving a work rate.

  The communication port 53 separates the air sucked into the dust collection cup 5 into the centrifugal separation unit 31 side and the negative pressure chamber unit 33, that is, a flow of air to the centrifugal separation unit 31 (dust collection unit 32) side. By bypassing the part to the pleated filter part 34 via the negative pressure chamber part 33, the life of the suction force of the vacuum cleaner is improved and the work rate is improved.In the vicinity of the inclined lower end of the upper wall part 37, that is, It is located at the upstream end of the centrifugal separator 31. Further, the communication port 53 is formed in a fan shape from the front of the vent opening 52 of the circular portion 51 to the rear side of the vent opening 52 (left side in FIG. 2). Further, the communication port 53 is formed with a lattice rib 61 that divides the communication port 53 into a lattice shape, and collects fine dust that is part of the dust sucked into the dust collecting cup 5 together with air. A filter 62 is provided as a second dust separator.

  The rear end opening 54 communicates with the dust collecting portion 32 on the downstream side of the centrifugal separator 31, and is located on the side of the communication port 53 at the lowest inclined end of the upper wall portion 37. The downstream end of the centrifugal separator 31 It constitutes. Further, an introduction plate 64 that is inclined to the lower front side is extended to the front end portion of the rear end opening 54 toward the dust collection portion 32 side.

  As shown in FIG. 5, the partition wall 38 has an extending portion 65 extending backward from a position slightly spaced below the upper wall portion 37, and a rear end portion of the extending portion 65. An inclined wall 66 as a first continuous wall portion extends downward from the lower end of the inclined wall 66, and a lower wall portion 67 as a second continuous wall portion extends downward from the lower end portion of the inclined wall 66. .

  The extending portion 65 is located between the dust collecting portion 32 and the negative pressure chamber portion 33, continues to a position between the front side of the communication port 53 and the rear end opening 54, and is slightly inclined downward toward the rear. It is formed in a shape.

  The inclined wall 66 is located between the dust collecting part 32 and the pleated filter part 34, is formed in an inclined shape so as to face the pleated filter part 34, and the downstream side of the dust collecting part 32 is connected to the negative pressure chamber. A large number of openings 71 communicating with the pleated filter part 34 via the part 33 are formed in a lattice shape, and a net filter 72 as a third dust separator is provided in each of the openings 71.

  The lower wall portion 67 is located between the dust collection portion 32 and the fine dust collection portion 35, and the lower end portion abuts against the bottom cover 27, so that the dust collection portion 32, the fine dust collection portion 35, and Is partitioned. Further, behind the lower wall portion 67, there is provided a longitudinal lower rear wall portion 74 that extends continuously on both the left and right sides of the wall portion 36. An upper portion of the lower rear wall portion 74 is provided with a pleat filter. A placing step portion 75 for placing the lower portion of the portion 34 is horizontally provided. A horizontally long exhaust port 81 is defined by the mounting step portion 75, both sides of the rear end portion of the wall portion 36, and the rear end portion of the upper wall portion 37. The exhaust port 81 communicates with the downstream side, which is the rear portion of the negative pressure chamber 33, and a circular intake port that communicates with the suction side of the electric blower 2 with the dust collecting cup 5 attached to the main body case 3. Opposite to face 82.

  The lower rear wall 74 is formed in a continuous longitudinal shape across the left and right sides inside the wall 36.

  On the other hand, as shown in FIG. 4 and FIG. 5, the air passage forming body 26 has a substantially circular protruding pipe portion 85 as a suction portion that forms a substantially circular suction port 84 at the front end, and is located at the front end portion. A spiral portion 86 as an air passage partition portion formed in a spiral shape in a clockwise direction in a plan view is continuously formed at the rear end portion of the protruding tube portion 85, and at the center portion of the spiral portion 86. An accommodating protrusion 87 is formed as an accommodating portion having a circular shape in plan view.

  The protruding pipe portion 85 is airtightly connected to the downstream side of the pipe portion 11 of the lid body 4 with the dust collecting cup 5 attached to the main body case 3, and communicates with the hose connection port 12 through the main body suction port 13. It is.

  The spiral portion 86 has an arc shape with a cross section projecting upward, and the downstream vertical dimension gradually decreases with respect to the upstream projecting tube portion 85 side, and the downstream end projects. It is formed so as to enter the lower part of the pipe part 85. Further, a regulating body 91 as a regulating member is provided inside the spiral portion 86 so as to be continuous with the rear end on the downstream side of the protruding tube portion 85. Further, a plurality of, for example, three not shown locking claw portions are formed at substantially equal intervals on the peripheral edge portion of the spiral portion 86, and these locking claw portions are provided on the dust collecting container body 25 side. The air passage forming body 26 is detachably locked to the dust collecting container body 25 by being detachably locked to the stop bodies 93.

  As shown in FIGS. 1 to 3, the restricting body 91 swirls the air sucked together with the dust from the suction port 84 to the centrifugal separator 31 in the clockwise direction in FIG. 2, that is, in the clockwise direction. A regulating portion 96 extending from the rear end portion of the protruding tube portion 85 to the front side of the dust separating portion 56 and extending to the same side as the communication port 53, that is, the left side shown in FIG. A rectifying plate portion 97 that continues from the lower portion on the rear end side of the protruding tube portion 85 to the lower end portion of the restricting portion 96 is provided. The restricting body 91 is separated from the upper wall portion 37 through the space portion 98.

  The restricting portion 96 is formed so as to be substantially perpendicular to the upper wall portion 37, and is curved along the circumferential direction of the dust separating portion 56.

  The rectifying plate portion 97 is formed substantially parallel to the upper wall portion 37, and covers the filter 62 of the communication port 53 from the front side to the left side in FIG. The filter 62 is covered via the space 98. For this reason, the filter 62 of the communication port 53 is exposed at a portion extending from the left portion to the rear portion, and the air separated by the centrifugal separator 31 is passed through the exposed portion to the negative pressure chamber portion 33 in a substantially linear shape. And is configured to pass.

  The space 98 communicates with the rear end opening 54 side in the centrifugal separator 31. Therefore, the centrifugal separator 31 is configured to communicate in the circumferential direction, and the space 98 is the air swirled in the centrifugal separator 31 by the regulating body 91 from the rear end opening 54 to the dust collector 32. A part of the air that has not been sucked in flows along the surface of the filter 62 below the rectifying plate portion 97 of the regulating body 91, thereby forming an air path that re-enters the upstream side of the turn.

  As shown in FIG. 5, the pleated filter unit 34 includes a pleated filter body 113 as a filter that is a fourth dust separator, and a frame body (not shown) that holds the pleated filter body 113, and has an exhaust port 81. Attached so as to close.

  The pleated filter body 113 is formed such that pleat crests and pleat troughs along the vertical direction are alternately continued in the left-right direction of the vacuum cleaner main body 1, and protrudes forward from the frame body. The lower part of the front end is mounted on the mounting step portion 75 of the dust collecting container body 25 with the 34 attached to the exhaust port 81. Further, at the rear part of the pleated filter body 113, for example, fine dust collected in the pleated filter body 113 is controlled so as to be reciprocated for a predetermined time when driving of the electric blower 2 is stopped. Dust removal means 114 is provided for dropping to 35.

  The frame is configured such that the lower end portion is placed on the placement step portion 75 of the dust container main body 25 with the pleated filter portion 34 attached to the exhaust port 81.

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

  The dust collection cup 5 is placed on the placement portion 8 of the main body case 3 and the lid 4 is closed, so that the main body suction port 13 on the lid 4 side and the suction port 84 on the dust collection cup 5 side are airtight. Connected to.

  Next, the hose body 15, the extension pipe 21 and the floor brush 22 are sequentially connected to the hose connection port 12, and a power cord (not shown) is led out from the main body case 3 and connected to a commercial AC power source. The desired setting button 18 is operated in the gripped state to drive the electric blower 2 in a desired operation mode.

  In this state, the operator touches the floor brush 22 on the floor surface, travels forward and backward, and sucks dust on the floor surface together with air from the front end side.

  The sucked-in air becomes a suction wind, and passes through the floor brush 22, the extension pipe 21, the hose body 15, the hose connection port 12 and the main body suction port 13 through the suction port 84 of the dust collecting cup 5, and the protruding pipe part 85. Into the centrifugal separator 31.

  This suction air is rectified clockwise in the centrifugal separator 31 by the restricting portion 96 of the restricting body 91 and flows along the rectifying plate portion 97 of the restricting body 91, and then part of the dust is separated together with dust. While being rotated in a circular shape along the periphery of the portion 56, the other portion passes through the filter 62 of the communication port 53 exposed to the rectifying plate portion 97.

  The swirled suction air imparts centrifugal force to the dust in the centrifugal separator 31, and the dust to which this centrifugal force is applied is collected from the rear end opening 54 into the dust collector 32. A part of the swirled suction air flows to the negative pressure chamber 33 through the opening 57a of the dust separator 56, and dust is collected by the net filter 58 when passing through the opening 57a. Is done. Further, the other part of the swirled suction air is not sucked into the rear end opening 54 but flows along the space below the rectifying plate portion 97 of the regulating body 91 through the space portion 98, and on the surface of the filter 62. The adhering dust is peeled off from the filter 62 and re-enters the upstream side of the swirling flow at the tip of the rectifying plate 97.

  The suction air flowing into the dust collecting part 32 is attached to the negative pressure chamber part 33 after fine dust is collected by the net filter 72 when passing through the opening 71 to the negative pressure chamber part 33. When passing through the pleated filter body 113, finer dust is collected.

  On the other hand, the suction air that has passed straight through the communication port 53 travels further straight through the negative pressure chamber 33 and then passes through the pleated filter body 113, so that finer dust is collected.

  The suction air that has passed through the pleated filter body 113 is exhausted from the exhaust port 81 to the outside of the dust collecting cup 5, and then sucked into the electric blower 2 from the intake port 82 and passes through the electric blower 2. It becomes exhaust air and is exhausted to the outside of the cleaner body 1 through an exhaust hole (not shown) formed in the main body case 3.

  When the cleaning is finished and the operator operates the setting button 18 to stop the driving of the electric blower 2, the dust removing means 114 attached to the pleat filter unit 34 is driven, so that the fine attached to the pleated filter body 113 Dust is dropped from the pleated filter body 113 onto the fine dust collecting unit 35.

  Thereafter, the operator rotates the lid 4 upward to open it, removes the dust collecting cup 5 from the main body case 3, opens the bottom lid 27 on, for example, a trash can, and collects from the disposal opening 42. The dust in the dust part 32 and the dust in the fine dust collecting part 35 are discarded.

  As described above, according to the above-described embodiment, the filter 62 provided with the restriction body 91 that rectifies the air sucked by the protruding pipe portion 85 into the centrifugal separation portion 31 and the communication port 53 that separates the sucked air. By facing the area part of more than half of the air through the space part 98, the dust contained in the sucked air can be prevented from directly adhering to the filter 62 by the regulating body 91, and the space part 98 is centrifuged. A part of the air rectified to the downstream side of the section 31 is re-entered to the upstream side of the centrifugal separation section 31 to re-enter the upstream side of the centrifugal separation section 31 via the space 98. The rushing air flow removes dust adhering to the filter 62 and prevents the dust from adhering directly to the filter 62 due to the air flow sucked by the protruding pipe portion 85, so that the electric blower 2 of the electric blower 2 due to clogging of the filter 62 is prevented. Increase in load can be suppressed.

  And since the adhesion of the dust to the filter 62 can be suppressed, the suction force by the electric blower 2 can be maintained for a long time.

  In addition, a configuration for suppressing clogging of the filter 62 is separately obtained by suppressing clogging of the filter 62 by using a regulating body 91 for reliably rotating the air sucked into the centrifugal separator 31. There is no need to provide it.

  Moreover, it can be set as the vacuum cleaner by which the suction force is hard to fall over a long term, ensuring work rate by using the said dust collection cup 5 for a vacuum cleaner.

  In addition, in the said one Embodiment, the detail of the dust collection cup 5 is not limited to the said structure. For example, the separation unit is not limited to the centrifugal separation unit 31 and may be a separation unit that separates air into the axial direction and the radial direction of the protruding tube unit 85 to separate dust straight (inertia separation). However, the same effect can be obtained by configuring the restricting body 91 and the like so as to correspond to each other.

  The second dust collection unit may be a fine dust collection unit that collects fine dust, instead of the pleated filter unit 34.

  Further, the filter 62 is not limited to a mesh filter but may be a pleat filter, for example, as long as dust can be removed by an air flow that re-enters the upstream side of the centrifugal separator 31 through the space 98. Any fine dust filter can be used.

  Then, the restricting body 91 is limited to one that turns if the air sucked by the protruding pipe portion 85 is rectified and the downstream side of the rectified air can be re-entered from the space portion 98 to the upstream side. Not.

  The details of the vacuum cleaner are not limited to the above configuration, and the vacuum cleaner is not limited to the canister type, for example, self-propelled (running assist type) or autonomous running type (robot type) electric For example, a vacuum cleaner or the like may be used. For example, the floor brush 22 may be an upright type or a handy type directly formed on the lower surface of the vacuum cleaner body 1.

It is a longitudinal cross-sectional view which shows the dust collector of one embodiment of this invention. It is a top view which shows the isolation | separation part of a dust collector same as the above. It is a perspective view which shows a separation part same as the above from the front side. It is a perspective view which shows a dust collector same as the above. It is a longitudinal cross-sectional view which shows the vacuum cleaner main body of the vacuum cleaner provided with the dust collector same as the above. It is a perspective view which shows the state which opened the cover body of the vacuum cleaner main body same as the above. It is a perspective view which shows a vacuum cleaner same as the above.

Explanation of symbols

1 Vacuum Cleaner Body 2 Electric Blower 5 Dust Collection Cup as Dust Collector
31 Centrifugal separation section as separation air path
32 Dust collector as the first dust collector
34 Pleated filter section as second dust collection section
53 Communication port as separation part
62 Filter
85 Projection tube as suction
91 Regulatory body as a regulatory member
98 space

Claims (2)

A suction part for sucking in air containing dust,
A filter that collects a part of the dust sucked by the suction part, and a separation part that separates the air sucked by the suction part;
A part of the air separated by the separation part is sucked in via a separation air passage, and a first dust collection part that collects dust contained in the air;
A second dust collecting part for collecting dust contained in the air separated by the separating part and passed through the separating part;
A regulating member that is continuously provided in the suction portion and rectifies the air sucked by the separation portion into the separation air passage and faces an area of more than half of the separation portion via a predetermined space portion. And
The dust collecting apparatus, wherein the space portion is an air passage in which a part of the downstream side of the air rectified to the separation air passage re-enters the upstream side of the separation air passage. A vacuum cleaner body containing an electric blower,
A vacuum cleaner comprising: the dust collecting device according to claim 1, wherein a downstream side of the second dust collecting unit communicates with an upstream side of the electric blower.

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