JP2015126960A - Dust collection device and electric vacuum cleaner - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an electric vacuum cleaner where a dust collection device is prevented from growing in size while effectively and separately accumulating dusts different in size each with a space secured.SOLUTION: A first centrifugal separation part 41 is set to a lower-side body part 38. The first centrifugal separation part 41 has an introduction port 51 through which dust-containing air is sucked, and centrifugally separates dusts in the dust-containing air sucked through the introduction port 51. An upper side body part 39 is provided with a plurality of second centrifugal separation parts 44, and an air trunk part 45. Each of the second centrifugal separation parts 44 comprises a swing part 103 forming an upper end part and a swing cylinder part 110 forming the lower end part, is circularly disposed around the center shaft of the first centrifugal separation part 41, and separates dusts which are in the dust-containing air passing through the first centrifugal separation part 41 and are smaller than the dusts separated by the first centrifugal separation part 41. The air trunk part 45 has an exhaust opening 116 at least part of which is located at a space between at least part of two second centrifugal separation parts 44 adjacent to each other, on its downstream edge, and leads the air passed through each of the second centrifugal separation parts 44 to an electric blower side.

Description

  Embodiments described herein relate generally to a dust collecting device that separates and collects dust from dust-containing air sucked by operation of an electric blower, and a vacuum cleaner including the dust collecting device.

  Conventionally, this type of vacuum cleaner includes a main body case that houses an electric blower and a dust collector that is detachably attached to the main body case. This dust collecting device is a so-called dust collecting cup, and separates and collects dust from dust-containing air sucked by driving of an electric blower.

  As such a dust collector, a so-called cyclone separation type is known in recent years, in which dust is centrifuged (cyclone separation) by swirling dust-containing air inside. In the case of such a cyclone separation type dust collector, the size and specific gravity of dust that can be separated are set according to the size (swivel diameter) of the separation part, so separate separation parts of different sizes should be provided separately. Thus, it is configured so that dusts having different sizes and specific gravity in the dust-containing air can be separated.

  However, if dusts having different sizes and specific gravity are stored in the same storage unit, dust having a small size and specific gravity, that is, fine dust, may rise in the dust collector when the electric blower is driven again. For this reason, it is preferable that fine dust and dust having a large size and specific gravity, that is, coarse dust, be stored in different storage units.

JP 2012-40443 A

  In the configuration described in Patent Document 1, a plurality of second centrifuge units that centrifuge fine dust are provided around the first centrifuge unit that centrifuges coarse dust. Since the dust-containing air separated is guided to the suction side of the electric blower by the air passage portion communicating with the upper side of each second centrifugal separator, the dust collector becomes longitudinal in the vertical direction, resulting in an increase in size. Has the problem.

  The problem to be solved by the present invention is to provide a dust collector and a vacuum cleaner equipped with the dust collector capable of suppressing the increase in size while ensuring the space of dusts of different sizes and effectively storing them separately. It is.

  The dust collector of the embodiment is a dust collector that is provided in a main body case that houses an electric blower and separates and collects dust from dust-containing air sucked by the operation of the electric blower. The dust collector includes a first main body portion and a second main body portion arranged on the upper side of the first main body portion. The first main body is provided with a first centrifuge. The first centrifugal separator has an inlet for sucking dust-containing air, and centrifugally separates the dust in the dust-containing air sucked from the inlet. The second main body part is provided with a plurality of second centrifuge parts and an air path part. The second centrifuge part is composed of a swivel part forming an upper end part and a separation chamber part forming a lower end part. The second centrifuge part is arranged in an arc around the central axis of the first centrifuge part and passes through the first centrifuge part. Dust that is smaller than the dust separated by the first centrifugal separation unit in the air is separated. The air passage section has an exhaust opening at the downstream end, at least a part of which is disposed between at least a part of two adjacent second centrifuge parts, and the air blown through each second centrifuge part is an electric blower. Lead to the side.

It is sectional drawing which shows the dust collector of the vacuum cleaner of one Embodiment. It is a perspective view which shows a dust collector same as the above from back. It is a perspective view which shows the state at the time of disposal of the dust of a dust collector same as the above. It is a perspective view which shows a vacuum cleaner same as the above.

  The configuration of one embodiment will be described below with reference to FIGS.

  In FIG. 4, reference numeral 11 denotes a so-called canister-type vacuum cleaner. The vacuum cleaner 11 has a pipe portion 12 that is a suction air passage body (air passage formation body) and a pipe portion 12 that is detachably connected. A vacuum cleaner main body 13.

  The pipe part 12 is provided on the distal end side of the hose body 16, the connecting pipe part 15 connected to the cleaner body 13, the flexible hose body 16 communicating with the distal end side of the connecting pipe part 15. The hand operating section 17, the extension pipe 18 detachably connected to the distal end side of the hand operating section 17, and the floor brush 19 as a suction port body detachably connected to the distal end side of the extension pipe 18 and the like And.

  In the hand operation unit 17, a loop-shaped gripping part 21 protrudes toward the hose body 16, and a plurality of operation setting buttons 22 are provided on the gripping part 21.

  The vacuum cleaner main body 13 includes a main body case 25 having a large-diameter traveling wheel 23 on both sides and a swivel wheel (not shown) at the lower portion, and a dust collecting device that is a dust collecting cup is provided above the main body case 25. 26 is removable. The cleaner body 13 is configured to be able to travel (move) at least along the front-rear direction on the floor surface, which is the surface to be cleaned, by the traveling wheels 23 and the turning wheels. Hereinafter, the front-rear direction and the left-right direction are based on the traveling (moving) direction of the cleaner body 13 (main body case 25).

  The main body case 25 is formed of, for example, a synthetic resin, and supports a main body portion 31 located behind the dust collector 26 and a front portion of the main body portion 31 to support a lower portion of the dust collector 26. A protrusion receiving portion 32 as a dust collector support portion is integrally provided. In the main body case 25, a main body air passage portion (not shown) is arranged across the main body portion 31 and the protrusion receiving portion 32.

  Inside the main body 31, the electric blower 35, a cord reel device that can supply power to the electric blower 35, etc., or a power supply unit (not shown) such as a secondary battery, and control means for controlling the operation of the electric blower 35 Each of the control circuit units is accommodated. Further, above the protrusion receiving portion 32 at the front portion of the main body 31, although not shown, an intake opening that is airtightly connected to the downstream side of the dust collector 26 attached to the main body case 25, and this collection A communication opening connected to the upstream side of the dust device 26 in an airtight manner is positioned above and below to form an opening. An exhaust hole (not shown) for discharging the exhaust from the electric blower 35 to the outside of the main body case 25 is formed at the rear end of the main body 31.

  The operation of the electric blower 35 is controlled by the control circuit unit according to the operation of the setting button 22. The suction side of the electric blower 35 communicates with the intake opening, and the downstream side communicates with the exhaust hole.

  The control circuit unit is electrically connected to the setting button 22, and the operation mode set by the operation of the setting button 22 (e.g., strong mode, medium mode, weak mode, automatic mode, stop mode, etc.). The operation of the electric blower 35 is set.

  Further, a main body suction port 36 to which the connection pipe portion 15 of the pipe portion 12 is connected is formed on the front surface of the protrusion receiving portion 32, and this main body suction port 36 becomes an opening at the upstream end of the main body air passage portion. ing. Therefore, the main body suction port 36 communicates with the communication opening portion via the main body air passage portion, and can communicate with the upstream side of the dust collector 26 via the communication opening portion.

  Further, as shown in FIGS. 1 to 4, the dust collector 26 includes a lower main body 38 as a first main body positioned on the lower side, and a second main body positioned on the upper side of the lower main body 38. An upper main body 39 as a part is detachably provided. Further, the lower main body portion 38 is provided with a first centrifugal separation portion 41 and a space portion 42. The upper main body portion 39 includes an aeration air passage portion 43 and, for example, a plurality of second centrifugal separation portions. 44 and an air passage 45 are provided. The dust collector 26 is configured to be detachably locked to the main body case 25 by a locking mechanism (not shown).

  The lower body part 38 is configured in a unit shape integrally including a first centrifuge part 41 located on the lower side and a space part 42 located on the upper side.

  The first centrifugal separator 41 mainly collects relatively large dust, that is, coarse dust, which is a part of the dust-containing air sucked into the interior by driving the electric blower 35, by centrifugal separation. The first centrifugal separation part 41 includes a substantially bottomed cylindrical case part 47 and a substantially cylindrical shade part 49 which is a connecting body as a structure housed in the case part 47. doing.

  The case portion 47 is formed of a member such as a transparent (transparent) synthetic resin, for example. Therefore, the inside of the first centrifuge 41 is visible from the outside. In addition, an inlet 51 for sucking dust-containing air is opened at the rear part of the case part 47, and the dust collector 26 (the lower body part 38 (first centrifuge part 41)) is held. A handle 52 for projecting is provided. Furthermore, a wall portion 53 as a cylindrical dust guide portion is provided on the entire circumference of the upper end portion of the case portion 47 so as to protrude upward on the space portion 42 side. The central part of the first part is a dust disposal port 54 for discarding coarse dust accumulated in the first centrifugal separator 41.

  The introduction port 51 extends substantially horizontally rearward, and is airtightly connected to the communication opening in a state where the dust collector 26 is attached to the main body case 25. Therefore, the introduction port 51 is airtightly connected to the main body suction port 36 through the communication opening.

  Further, the handle portion 52 protrudes from the rear portion of the case portion 47 and to the side of the introduction port 51, in other words, in the vicinity of the introduction port 51. The handle 52 is provided, for example, in the vertical direction, that is, parallel to the axial direction of the lower main body 38 (first centrifuge 41). Further, the handle portion 52 has a loop shape with respect to the case portion 47, for example. The handle 52 may be used for positioning when the dust collector 26 is attached to the main body case 25, for example.

  The wall 53 is gradually reduced in diameter upward. That is, the wall 53 is gradually inclined upward toward the central axis. Further, the upper end portion of the wall portion 53 is airtightly connected to the lower end portion of the upper body portion 39 in a state where the upper body portion 39 is attached to the lower body portion 38. Accordingly, the dust disposal port 54 can be opened and closed by being attached to and detached from the lower main body portion 38 of the upper main body portion 39.

  The shade part 49 forms a swirl air passage 58 for swirling the dust-containing air between the outer periphery and the inner peripheral surface 47a of the case part 47, and the first centrifuge part 41 and each second centrifuge through the inside. The separation part 44 side (which connects the ventilation air passage part 43, the shade part body 61 which is a substantially cylindrical structure body, and the compression part provided coaxially on the lower end side of the shade part body 61 62, and the upper end side of the shade part main body 61 is airtightly connected to the upper main body part 39. That is, the shade part 49 is a turning center of the first centrifugal separation part 41. The shade part 49 can be attached to and detached from the case part 47 (the dust disposal port 54 of the case part 47).

  The sail part main body 61 includes a plurality of openings 66 in the circumferential direction through which dust-containing air swirling the swirling air path 58 passes, and the entire opening 66 is covered with a filter 67. In addition, a hook-shaped closing portion 68 is projected outwardly on the entire circumference of the upper portion of the shade portion main body 61. The closing portion 68 is detachably connected to the upper end portion of the wall portion 53. That is, the closed portion 68 allows the outer peripheral side, which is the upstream side of the shade portion 49, in other words, the upstream side of the filter 67 (opening 66), which is the upstream side of the first centrifugal separation portion 41, to vent the upper body portion 39. The air passage unit 43 is blocked.

  Further, the compression unit 62 compresses the coarse dust separated in the first centrifugal separation unit 41 by using the negative pressure generated by driving the electric blower 35, and radially extends from the lower end of the shade unit main body 61. And a circular top plate portion 73 projecting like a bowl and a peripheral plate portion 74 projecting downward from the outer peripheral edge of the top plate portion 73, and are open downward. Further, a plurality of ventilation openings 75 are opened at substantially equal intervals in the circumferential direction in the top plate portion 73, and these ventilation openings 75 are covered with a compression filter 76. The compression unit 62 presses the coarse dust against the compression filter 76 by passing a part of the dust-containing air swirling in the swirling air passage 58 so as to circulate from the lower side to the ventilation opening 75, and removes the coarse dust. It is configured to be stored in a compressed state.

  The space portion 42 is provided in a cylindrical shape, and extends upward with respect to the case portion 47 continuously to the entire peripheral edge portion of the upper end portion of the case portion 47 of the first centrifugal separation portion 41. That is, the space portion 42 includes an inclined surface portion 77 that is inclined downward from the outside to the inside. Further, the inner peripheral side of the space portion 42 is partitioned by a wall portion 53. That is, the space portion 42 is provided on the outer periphery of the dust disposal port 54, and the upper side is opened and closed by attaching and detaching the upper body portion 39 to the lower body portion 38. In addition, partition portions 78 and 78 project from the inclined surface portion 77 and are located upward on the both sides of the air passage portion 45 inside the space portion 42. These partition parts 78 and 78 are provided radially along the radial direction from the outer periphery of the wall part 53 (dust disposal port 54), for example, in plan view. In the space portion 42, a relatively wide region between the partition portions 78 and 78 communicated with the lower end portions of all the second centrifuge portions 44 and was centrifuged by the second centrifuge portions 44. A relatively small arc-shaped dust in the air containing dust, that is, a fine dust reservoir 79 serving as a storage for accumulating fine dust inside, and a relatively narrow arc-shaped between the partitions 78 and 78. The region is a non-fine dust reservoir 80 that does not collect fine dust. In other words, the fine dust reservoir 79 is an area located below the second centrifugal separator 44 in the space 42, and the non-fine dust reservoir 80 is the second centrifugal separator in the space 42. This is a region where the portion 44 is not located (does not face the lower side of the second centrifuge 44), that is, a region located below the downstream end of the air passage 45 and above the inlet 51.

  The fine dust reservoir 79 is provided from both sides on the rear side of the space portion 42 to the front side.

  The non-fine dust reservoir 80 is provided between both ends of the fine dust reservoir 79 in the space 42.

  Further, the upper body portion 39 is in a unit shape integrally including a first air passage body 81, a second air passage body 82, an introduction air passage body 83, a separation air passage body 84, and an upper lid portion 85. Yes.

  The first air passage body 81 includes a circular plate-shaped lower plate portion 91 constituting a lower end portion of the upper body portion 39, an opening portion 92 opened in a circular shape at the center portion of the lower plate portion 91, and the opening A cylindrical tube portion 93 as a ventilation portion that is located at the center of the portion 92 and rises upward from the lower plate portion 91, and communicates with the rear portion of the tube portion 93 and extends rearward to be connected to the lower plate portion 91. The duct portion 94 as the communicating ventilation portion and the cylindrical air guide portion 95 that rises upward from the edge of the opening 92 concentrically with the cylindrical portion 93 outside the cylindrical portion 93 are integrally provided. ing. A seal member 96 that closes a gap between the upper body part 39 and the upper part (space part 42) of the lower body part 38 is attached to the lower part of the lower plate part 91. Further, the air guide portion 95 is inclined so as to approach the center side of the opening 92, that is, the outer periphery of the tube portion 93 upward.

  The second air passage body 82 has a cylindrical through-cylinder portion 98 as a rectifying portion whose lower end portion is airtightly connected to the upper end portion of the cylindrical portion 93 of the first air passage body 81, and the cylinder passage portion 98. And a flange portion 99 extending in a bowl shape that gradually increases in diameter while being curved outward from the upper end portion thereof. The outer periphery of the flange 99 is in contact with the inner edge of the upper lid 85.

  The introduction air passage body 83 includes a cylindrical connecting tube portion 101 as a ventilation connection portion that is airtightly connected to an upper end portion of the air guide portion 95 of the first air passage body 81, and an upper end of the connecting tube portion 101. A circular extending portion 102 that extends in a bowl shape so as to face the lower portion of the flange portion 99 from outside to cover the upper side of the separation air passage body 84, and is provided in a spiral lid shape on the extending portion 102 A plurality of swivel portions 103 forming the upper end portion of the second centrifugal separation portion 44, an exhaust cylinder portion 104 as an exhaust portion integrally provided in a cylindrical shape at the center of each of the swivel portions 103, and an extension portion 102 And a branch introducing portion 105 that is provided in communication with the swiveling portions 103 along the tangential direction of the swiveling portions 103 and that introduces dust-containing air into the swirling portions 103. The upper end portion of the exhaust tube portion 104 is hermetically inserted and connected to a circular connection hole 106 opened in the flange portion 99 of the second air passage body 82.

  The separation air passage body 84 includes a cylindrical connection tube portion 107 connected to the upper end portion of the air guide portion 95 of the first air passage body 81 outside the connection tube portion 101, and the connection tube portion 107. A circular protrusion 108 extending outward from the upper end of the first air passage body 81 and overlapping the upper portion of the duct portion 94 of the first air passage body 81, and projecting downward from the outer peripheral edge of the protrusion 108 to the upper main body 39. A plurality of separation chambers as a main body of a second centrifuge part that is provided on the projecting part 108 at an inner position of the outer wall part 109 and forms a lower end part of the second centrifuge part 44. The swivel tube portion 110 is integrally provided. And these turning cylinder parts 110 are formed in the diameter smaller than the case part 47 of the 1st centrifugation part 41, and also the diameter is gradually reduced from the upper end part to the lower end part. Further, the swirl portions 103 of the introduction air passage body 83 are fitted to the upper end portions of the swirl tube portions 110, respectively, and the lower end portion of the swirl tube portion 110 is the lower plate of the first air passage body 81. The holes 91 are respectively inserted into insertion holes 111 opened in a circular shape and communicated with the space 42.

  The upper lid 85 covers the upper side of the introduction air passage body 83 and is connected to the upper end portion of the separation air passage body 84.

  The aeration air passage section 43 connects the first centrifuge section 41 and each second centrifuge section 44 in an airtight manner. The ventilation air passage portion 43 has an opening 92 of the first air passage body 81, a space between the tube portion 93 and the duct portion 94, and a cylinder passage portion 98 and a flange portion 99 of the second air passage body 82. The connecting cylinder part 101, the extension part 102, and the swivel part 103 of the road body 83 are airtightly partitioned between the second centrifuge part 44 (the swivel cylinder part) via the branch introduction part 105 and the swivel part 103. 110 inside). Therefore, the ventilation air passage portion 43 rectifies while reducing the flow rate of the dust-containing air from the upstream side (downstream side of the first centrifugal separation portion 41) to the downstream side (upstream side of the second centrifugal separation portion 44). It is configured as follows.

  Each of the second centrifuges 44 has a turning radius of the dust-containing air smaller than that of the first centrifuge 41 and a turning speed higher than that of the first centrifuge 41. As a result, the dust is relatively (relatively) smaller than the dust centrifuged in the first centrifugal separator 41 in the dust-containing air that has passed through the first centrifugal separator 41, that is, the fine dust is centrifuged to obtain a space portion. It will drop to 42. In other words, each second centrifuge 44 separates dust that could not be separated by the first centrifuge 41 in the air containing dust. The second centrifugal separator 44 is located above the first centrifugal separator 41 and between the swivel portion 103 and the exhaust tube portion 104 of the introduction air passage body 83 and the swirl tube portion 110 of the separation air passage body 84. The dust-containing air that has passed through the ventilation air passage section 43 from the branch introduction section 105 and the swivel section 103 is introduced into the interior, and swirled in the swivel cylinder section 110, and the fine dust separated by centrifugation is introduced from the lower end section. While being dropped to the space portion 42, clean air from which fine dust has been separated is exhausted from the exhaust tube portion 104 to the air passage portion 45. The second centrifugal separators 44 are circularly spaced apart from each other at substantially equal intervals at positions other than the rear part (air passage part 45) around the central axis of the dust collector 26 (first centrifugal separator 41). Arranged in an arc.

  In addition, the air passage portion 45 is provided between each exhaust tube portion 104 and the upper lid portion 85 and the flange portion 99 and the through-cylinder portion 98 of the second air passage body 82, the cylinder portion 93 of the first air passage body 81, and the duct portion. 94 and a lower plate portion 91 are hermetically partitioned. That is, the air passage portion 45 communicates with the downstream side of all the second centrifugal separators 44, and from the upper side of each second centrifugal separator 44 to the side of the second centrifugal separators 44, in this embodiment. In addition, the second centrifuge portions 44 arranged in an arc shape (substantially circular shape) continue to the center of the second centrifugal separation portion 44 so as to gradually reduce the air flow rate, and are bent backward. The downstream end side of the air passage portion 45 is an exhaust opening 116 for discharging air from the dust collector 26, and is located between the second centrifuge portions 44 and 44 on the rear side. The exhaust opening 116 is airtightly connected to the intake opening in a state where the dust collector 26 is attached to the main body case 25. Therefore, the exhaust opening 116 is airtightly connected to the suction side of the electric blower 35 via the intake opening. Further, the exhaust opening 116 is located on the rear side of the dust collector 26, which is the same side as the inlet 51, and the front of the main body portion 31 of the main body case 25 with the dust collector 26 attached to the main body case 25. Opposite the part. For this reason, the handle 52 is located near one side of the exhaust opening 116.

  Next, the cleaning operation according to the embodiment will be described.

  When cleaning is started, first, the dust collector 26 in which the lower main body portion 38 and the upper main body portion 39 are assembled together is attached to the main body case 25. That is, the dust collector 26 is placed and supported on the protrusion receiving portion 32 of the main body case 25 while the handle portion 52 is positioned on the main body case 25 side, and is collected with respect to the main body case 25 by the locking mechanism. By locking the dust device 26 so as to be pressed to the rear side, the inlet 51 and the exhaust opening 116 of the dust collector 26 are connected to the communication opening and the intake opening of the main body case 25 in an airtight manner, respectively. Therefore, the dust collector 26 is attached to the main body case 25 in an airtight connection between the suction side of the electric blower 35 and the main body suction port 36.

  Note that when the dust collector 26 is already attached to the main body case 25, these operations are unnecessary.

  In this state, the pipe portion 12 is connected to the main body suction port 36 of the cleaner main body 13 (main body case 25). Specifically, the pipe part 12 inserts and connects the connection pipe part 15 to the main body suction port 36, and sequentially connects the extension pipe 18 and the floor brush 19 to the distal end side of the hand operation part 17 as necessary. In this state, the setting button 22 of the hand operation unit 17 is electrically connected to a control circuit unit in the cleaner body 13 (main body case 25) and the like. In addition, when the pipe part 12 is already connected to the cleaner body 13, these operations are unnecessary.

  The user then sets the operation mode of the electric blower 35 by holding the holding part 21 and operating a desired setting button 22. The control circuit unit controls the input of the electric blower 35 corresponding to the set operation mode, and starts the electric blower 35 in the set operation mode.

  The negative pressure generated by the activation of the electric blower 35 includes an intake opening, an exhaust opening 116, an air passage 45, a second centrifugal separator 44, an aeration air passage 43, a first centrifugal separator 41, an inlet 51, It acts on the pipe portion 12 via the communication opening, the main body air passage portion, and the main body suction port.

  The user sucks dust together with air from the front end side of the floor brush 19, the extension pipe 18, or the hand operation unit 17 by the action of the negative pressure.

  The dust-containing air, that is, the dust-containing air is guided from the pipe portion 12 through the main body suction port 36, the main body air passage portion, and the communication opening portion to the introduction port 51, and from the introduction port 51, the dust collector 26 Into the first centrifuge 41.

  In the first centrifugal separator 41, the dust-containing air swirls in the swirling air passage 58, whereby particularly coarse dust in the dust-containing air is centrifuged and falls along the inner peripheral surface 47a of the case portion 47. And is stored on the bottom. The coarse dust is carried from the swirling air passage 58 to the compression portion 62 of the shade portion 49 by a part of the flow of the dust-containing air, and the dust-containing air passes through the ventilation opening 75 of the compression portion 62. The compression filter 76 compresses the compression unit 62.

  The dust-containing air from which the coarse dust has been separated is filtered by the filter 67 when passing through the opening 66 of the shade part 49. Further, the dust-containing air that has passed through the filter 67 is carried to the ventilation air passage portion 43. Then, the dust-containing air is rectified by gradually reducing the flow rate in the ventilation air passage portion 43, and then in each second centrifugal separation portion 44 along the tangential direction from each branch introduction portion 105 to each swivel portion 103. Branches into and flows into (in the swivel cylinder portion 110).

  In these second centrifugal separators 44 (swivel cylinder part 110), the dust-containing air is swirled along the inner peripheral surface (the inner peripheral surface of the rotary cylinder part 110), and fine dust in the dust-containing air is centrifuged. Then, it falls along the second centrifuge 44 (inner circumferential surface of the swivel cylinder 110) and is stored in the fine dust reservoir 79. The fine dust stored in the fine dust reservoir 79 is guided downward along the inclined surface 77 and is located between the inclined surface 77 and the wall 53.

  The fine air from which fine dust has been centrifuged is exhausted from the exhaust tube 104 at the center of each second centrifugal separator 44 to the air passage 45 where it joins. Then, it is guided rearward and exhausted from the exhaust opening 116 to the outside of the dust collector 26.

  Thereafter, the air is sucked into the electric blower 35 from the intake opening, passes through the electric blower 35 while cooling, and becomes exhausted air, and is discharged from the electric blower 35 to the outside of the main body case 25 through the exhaust hole. Is exhausted.

  When the cleaning is completed, the user operates the predetermined setting button 22 so that the control circuit unit decreases the input of the electric blower 35 and stops the electric blower 35.

  When a certain amount of dust accumulates in the dust collector 26, the user removes the dust collector 26 from the main body case 25 by externally operating the locking mechanism.

  Then, the upper body 39 is removed from the lower body 38, and the shade part 49 is removed from the dust disposal port 54 of the case 47 (FIG. 3), and the lower body 38 is trashed by holding the handle 52. After the dust collector 26 is carried to the disposal position, the upper side is tilted downward so that the coarse dust accumulated in the compressed state in the first centrifuge part 41 becomes dust along the inner periphery of the wall part 53. In addition to being discarded from the disposal port 54, the fine dust accumulated in the fine dust reservoir 79 falls along the outer periphery of the wall 53 from both sides of the partitions 78, 78 and is discarded.

  According to the embodiment described above, the second centrifuge 44 for separating fine dust in the dust-containing air that has passed through the first centrifuge 41 is provided above the first centrifuge 41, and By providing an air passage portion 45 that guides the air that has passed through the second centrifugal separator 44 to the electric blower 35 side above the first centrifugal separator 41 and on the side of the second centrifugal separator 44. The air passage 45 is divided into the first centrifugal separator 41 and the second centrifugal separator 44 (fine dust reservoir 79) to secure the respective spaces of coarse dust and fine dust and effectively collect them. It is possible to suppress excessive protrusion upward, and to suppress the increase in size of the dust collector 26.

  In particular, each of the second centrifuges 44 centrifuges fine dust that has passed through the first centrifuge 41. Therefore, each second centrifuge 44 has a smaller diameter than the first centrifuge 41, and the second centrifuges. A dead space tends to be generated on the side of the portion 44. Therefore, by effectively utilizing this dead space, the air passage portions 45 are provided so that the air passage portions 45 are located at substantially the same height as the second centrifuge portions 44, with respect to the second centrifuge portions 44. Projecting upward.

  Further, by providing the handle 52 in the vicinity of the exhaust opening 116, which is the downstream end of the air passage 45 of the first centrifugal separator 41, the second centrifugal separator 44 is positioned in the vicinity of the handle 52. In other words, the non-fine dust reservoir 80 is located above the handle 52, in other words, fine dust is not accumulated in the vicinity of the handle 52. Therefore, in the dust collector 26 that houses the fine dust centrifuged by the second centrifugal separators 44 and is provided with the fine dust reservoir 79 that can be opened and closed on the upper side, the upper side of the fine dust reservoir 79 is opened, When the lower body 38 (the first centrifugal separator 41 and the fine dust reservoir 79) is tilted and the dust is discarded by gripping the portion 52, fine dust is generated from the vicinity of the handle portion 52 on the upper side. The user's hand that grips the handle 52 is not easily soiled by fine dust without being dropped and soaring.

  Furthermore, since the introduction port 51 is on the same side as the exhaust opening 116 that is the downstream end of the air passage portion 45, the handle portion 52 is located in the vicinity of the introduction port 51. Therefore, when the upper side of the fine dust reservoir 79 is opened, the handle 52 is gripped and the lower main body 38 (the first centrifugal separator 41 and the fine dust reservoir 79) is tilted to dispose of the dust, Since the introduction port 51 located on the 52 side is relatively on the upper side, coarse dust accumulated in the first centrifugal separator 41 from the introduction port 51 is less likely to leak.

  Further, since the introduction port 51 of the first centrifugal separation unit 41 is located on the rear side that is the same side as the exhaust opening 116 that is the downstream end of the air passage unit 45, when the dust collector 26 is attached to the main body case 25. When the dust collector 26 is held so as to be pressed against the rear side which is the inlet 51 and the exhaust opening 116 side, the connection between the inlet 51 and the communication opening on the main body case 25 side, and the exhaust opening 116 and the main body case The airtightness of the connection with the intake opening on the 25 side can be obtained at the same time. That is, when the inlet and the exhaust opening are located on the opposite sides, the direction in which the inlet side is pressed against the main body case side is opposite to the direction in which the exhaust opening side is pressed against the main body case side. In the present embodiment, it is not easy to ensure the airtightness of the connection when 26 is attached to the main body case 25, but in this embodiment, the dust collector 26 is simply pushed to the rear side in one direction, The airtightness of the connection with the exhaust opening 116 side can be easily obtained.

  Furthermore, since the inlet 51 and the exhaust opening 116 are respectively located on the rear side, no structure is arranged on the front side of the case portion 47 of the first centrifugal separator 41 of the dust collector 26, The inside of the first centrifuge part 41 can be easily seen from the front of the case part 47. Therefore, it is easy for the user to visually check the amount of coarse dust collected in the first centrifugal separation section 41, and it is easy to obtain a sense of achievement of cleaning, and it is easy to recognize the timing of disposal of dust. improves.

  In the above-described embodiment, the number of the second centrifuge units 44 is not limited to a plurality, and for example, only one second centrifuge unit 44 may be disposed above the first centrifuge unit 41.

  Further, the vacuum cleaner 11 is not limited to a canister type, for example, an upright type in which a floor brush 19 is connected to the lower part of a vacuum cleaner body 13 that is vertically long, or a self-running (autonomous running) type, etc. But you can.

  Furthermore, although one embodiment of the present invention has been described, this embodiment is presented as an example and is not intended to limit the scope of the invention. The novel embodiment can be implemented in various other forms, and various omissions, replacements, and changes can be made without departing from the scope of the invention. This embodiment and its modifications are included in the scope and gist of the invention, and are included in the invention described in the claims and the equivalents thereof.

11 Vacuum cleaner
25 Main unit case
26 Dust collector
35 Electric blower
38 Lower body as the first body
39 Upper body as second body
41 First centrifuge
44 Second centrifuge
45 Air passage
51 Introduction
95 Air guide
103 Swiveling part
110 Swivel cylinder part as separation chamber
116 Exhaust opening

Claims (3)

A dust collector that is provided in a body case that houses an electric blower and separates and collects dust from dust-containing air sucked in by the operation of the electric blower,
A first main body having an inlet for sucking in dust-containing air and provided with a first centrifugal separation section for centrifugally separating dust in the dust-containing air sucked from the inlet;
The first in the dust-containing air, which is composed of a swirl portion forming an upper end portion and a separation chamber portion forming a lower end portion, is arranged in an arc shape around the central axis of the first centrifugal separation portion and passes through the first centrifugal separation portion. A plurality of second centrifugal separators for separating dust smaller than the dust separated by the centrifugal separator, and an exhaust opening at least partially disposed between at least a part of the two adjacent second centrifugal separators. An air passage portion that is provided at a downstream end and guides air that has passed through each of the second centrifugal separation portions to the electric blower side, and a second main body portion that is disposed on the upper side of the first main body portion. Dust collector characterized by having. The second main body portion is provided with an air guide portion that is located inside the plurality of second centrifugal separators and guides the dust-containing air that has passed through the first centrifugal separators to the second centrifugal separator. The dust collector according to claim 1, wherein: A body case containing an electric blower;
The dust collecting device according to claim 1 or 2, wherein the dust collecting device is provided detachably on the main body case and separates dust from the dust-containing air sucked by the operation of the electric blower. Vacuum cleaner.

Images