JP2013135819A - Vacuum cleaner - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a vacuum cleaner having a uniform rate of dust-containing air flowing into separation chambers while improving the area efficiency in disposition of the separation chambers.SOLUTION: A second dust separation/collection portion 27 includes separation chamber rows L in three or more rows, each having a plurality of separation chambers 181 each communicating with an inflow air passage portion 177, including an introduction opening 187 for introducing the dust-containing air, and arranged in line in an inflow direction of the dust-containing air toward the inflow air passage portion 177, and arranged in both side direction crossing the inflow direction of the dust-containing air toward the inflow air passage portion 177. In a left row L2 and a right row L3, the introduction openings 187 of the separation chambers 181 on the front side of the inflow air passage portion 177 are directed to the inflow side of the dust-containing air flowing into the inflow air passage portion 177 and provided toward the center in a both side direction. In the left row L2 and the right row L3, the introduction openings 187 of the separation chambers 181 on the rear side of the inflow air passage portion 177 are directed to the rear side opposite to the inflow side of the dust-containing air flowing into the inflow air passage portion 177 and provided toward a side opposite to the center in a both side direction.

Description

  Embodiments of the present invention relate to a vacuum cleaner provided with a dust collecting device that centrifuges and collects dust from dust-containing air sucked by driving of an electric blower.

  2. Description of the Related Art Conventionally, a vacuum cleaner includes a vacuum cleaner body including an electric blower, and a dust collector that collects dust sucked by the operation of the electric blower. As this dust collector, for example, a centrifugal separation unit that rotates air sucked together with dust to centrifuge the dust (cyclonic separation) may be used.

JP 2009-111281 A

  In the configuration described in Patent Document 1, a second centrifuge for centrifuging fine dust (fine dust) that has passed through the first centrifugal separator is mainly disposed around a cylindrical first centrifugal separator that centrifuges coarse dust. A plurality of separation chambers constituting the separation portion are arranged at substantially equal intervals. However, in such a configuration, since the area efficiency in the arrangement of the separation chamber is reduced, a configuration in which the separation chamber is arranged in a square shape is conceivable. On the other hand, when the separation chambers are arranged in a quadrangular shape, it is not easy to make the respective positions equidistant from the first centrifugal separation unit, and the inflow of dust-containing air that has passed through the first centrifugal separation unit into each separation chamber. The amount, that is, the amount of dust collected in each separation chamber is biased.

  The problem to be solved by the present invention is to provide a vacuum cleaner in which the amount of dust-containing air flowing into each separation chamber is made uniform while improving the area efficiency of the arrangement of the separation chambers.

  The vacuum cleaner of embodiment has the vacuum cleaner main body provided with the electric blower. Moreover, this vacuum cleaner has a dust collector which centrifuges and collects dust from the dust-containing air suck | inhaled by the drive of the electric blower. The dust collector includes an inflow air passage portion through which dust-containing air flows from one end side. In addition, the dust collector has a plurality of separation chambers arranged in a line along the inflow direction of the dust-containing air to the inflow air passage portion, having an introduction opening that communicates with the inflow air passage portion and introduces the dust-containing air. The separation chamber rows are provided in three or more rows on both sides intersecting the inflow direction of the dust-containing air into the inflow air passage portion. The separation chamber rows located at least on both sides are such that the introduction opening of the separation chamber on one end side of the inflow air passage portion is directed toward the inflow side of the dust-containing air to the inflow air passage portion, and the center in the both directions of the separation chamber row On the side. In addition, the separation chamber rows located at least on both sides are separated such that the introduction opening of the separation chamber on the other end side of the inflow air passage portion is directed to the side opposite to the inflow side of the dust-containing air into the inflow air passage portion. It is provided in the opposite center side of the both sides of the chamber row.

It is a top view which shows arrangement | positioning of the introduction opening of the dust collector of the vacuum cleaner of 1st Embodiment. It is a longitudinal cross-sectional view which shows the vacuum cleaner main body of a vacuum cleaner same as the above. It is a perspective view which shows a dust collector same as the above from the front. It is a vertical side view of a dust collector same as the above. It is a vertical front view of a dust collector same as the above. It is a perspective view which decomposes | disassembles and shows a dust collector same as the above, (a) shows the state which removed the cover part, (b) shows the state which removed the rectification | straightening part. It is a perspective view which shows the state which removed the dust collection part from the vacuum cleaner main body same as the above. It is a perspective view of a vacuum cleaner same as the above. It is a top view which shows arrangement | positioning of the introduction opening of the dust collector of the vacuum cleaner of 2nd Embodiment.

  The configuration of the first embodiment will be described below with reference to the drawings.

  In FIG. 8, reference numeral 11 denotes a so-called canister-type vacuum cleaner. The vacuum cleaner 11 is connected to a pipe portion 12 that is a suction air passage body (air passage formation body) and the pipe portion 12 in a detachable manner. 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 that is detachably connected to the distal end side of the hand operating section 17, and the detachable connection selectively connected to the distal end side of the extension pipe 18 or the distal end side of the hose body 16. And a floor brush 19 as a suction port body.

  The hand-operated portion 17 has a loop-shaped gripping portion 21 projecting toward the hose body 16, and a plurality of setting buttons 22 serving as setting means as operating portions for operation are provided above the gripping portion 21. Yes.

  As shown in FIGS. 2, 7 and 8, the cleaner body 13 includes a body case 25 having a large-diameter traveling wheel 23 on both sides and a small-diameter turning wheel 24 at the bottom. 25 includes a first separated dust collecting portion 26 as a (first) centrifugal separation portion as a dust collecting portion and a second separated dust collecting portion 27 as a (second) centrifugal separation portion as a dust collecting device. The dust collecting means 28 is detachable. That is, the dust collecting means 28 has a multistage configuration in which the first separated dust collecting portion 26 is provided in the front stage and the second separated dust collecting section 27 is provided in the subsequent stage. The dust collecting means 28 has a two-stage configuration in this embodiment, but may be configured to have at least two stages. 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 wheel 23 and the turning wheel 24. Hereinafter, directions such as up and down and left and right are based on the traveling direction of the cleaner body 13 (main body case 25).

  The main body case 25 is formed of, for example, synthetic resin, and includes a main body portion 32 that houses the electric blower 31 and a protruding portion 33 that serves as a mounting portion that protrudes from the front portion of the main body portion 32. Have. The main body case 25 includes an upstream duct portion 38 which is a (first) duct portion located from the inside of the projecting portion 33 to the front portion of the main body portion 32, and the main body portion 32. A downstream duct portion 39 which is a (second) duct portion is disposed, a power supply chamber 40 is defined, and a diffusion chamber 41 as a diffusion portion is defined at the rear.

  The electric blower 31 is a fan motor that sucks air by generating a negative pressure by rotating a centrifugal fan with an electric motor, for example, and is provided in a substantially cylindrical shape and is located in the downstream duct portion 39 and is located in the main body portion 32. According to the setting operation of the setting button 22, the on / off of the operation is controlled by a control means (not shown) such as a microcomputer housed in the main body 32. The electric blower 31 forms an air passage W that sequentially communicates with the pipe portion 12, the first separated dust collecting portion 26, the second separated dust collecting portion 27, and the downstream duct portion 39. Further, an exhaust port (not shown) for exhausting the sucked air to the side is provided on the outer peripheral surface of the electric blower 31.

  In addition, an attachment recess 44 for attaching and detaching the second separated dust collection portion 27 of the dust collection means 28 is provided at the front portion of the main body portion 32 so as to face the protruding portion 33. Further, on both sides of the main body 32, traveling wheels 23 are rotatably supported.

  The mounting recess 44 is recessed along the front-rear direction from the front end of the central portion of the main body 32 in the left-right width direction. One and the other front surface portions 48 and 49 are provided on both sides of the front portion of the mounting recess 44.

  Further, a communication port 63 serving as an upstream end of the downstream duct portion 39 is opened at the upper rear portion of the mounting recess 44. The communication port 63 is provided, for example, in a longitudinal shape, that is, horizontally long in the left-right width direction, and a communication port seal member 64 such as a rubber packing is disposed along the peripheral edge. The communication port 63 is configured to be airtightly connected to the downstream end of the second separated dust collecting portion 27 via the communication port seal member 64.

  In addition, a communication opening 103 serving as a downstream end of the upstream duct portion 38 is opened on the other front surface portion 49 at a position closer to the upper side. In this communication opening 103, a communication opening seal member 104 such as a rubber packing is disposed along the peripheral edge. The communication opening 103 is configured to be airtightly connected to the upstream end of the first separated dust collecting unit 26 via the communication opening seal member 104.

  Further, the protruding portion 33 is a portion that supports the first separated dust collecting portion 26 from the lower side. Further, a main body suction port 107 that is an upstream end of the upstream duct portion 38 and is connected to the connecting pipe portion 15 of the pipe portion 12 is opened at the front portion of the projecting portion 33. The swivel wheel 24 is pivotally supported at the lower portion of the projecting portion 33 so as to be swivelable.

  A handle 108 for lifting the cleaner main body 13 is attached to the upper part of the main body case 25. In addition, a plurality of exhaust holes 109 that are in communication with the diffusion chamber 41 and exhaust the exhaust from the electric blower 31 to the outside of the main body case 25 are opened over substantially the entire rear surface of the main body case 25.

  Further, the downstream duct portion 39 is a communication air passage portion 115 extending in the vertical direction in front of the diffusion chamber 41 and behind the second separated dust collecting portion 27 (mounting recess 44), that is, in the vicinity of the rear portion of the main body case 25. An electric blower chamber (not shown) that communicates in front of one side of the communication air passage portion 115 and accommodates the electric blower 31 therein, and the cleaner body 13 (main body case) from the front side surface of the electric blower chamber portion. 25) a connecting air passage portion 117 as an air passage portion extending in the left-right width direction across the power supply chamber 40 disposed on the other side with respect to the electric blower chamber portion of 25), further comprising: Defines a communication air passage communicating with the front other side (power supply chamber 40). Further, a filter 119 is accommodated in the connection air passage portion 117.

  The power supply chamber 40 is provided along the front-rear direction on the other side of the main body 32, for example. Further, a power supply unit 121 for supplying power to the electric blower 31 is accommodated in the power supply chamber 40. In the present embodiment, the power supply unit 121 is, for example, a cord reel device, and the distal end side is led out of the main body case 25, and the plug unit 121a at the distal end can be connected to a commercial AC power source (not shown). The main body case 25 can be wound into the main body case 25 by operating a winding button (not shown) provided on the upper portion of the main body portion 32 of the main body case 25.

  On the other hand, the first separated dust collecting part 26 constituting a part (upstream side) of the dust collecting means 28 is a relatively large dust such as fiber dust by rotating the dust-containing air sucked by driving the electric blower 31. It is a dust collection cup that centrifuges (collects cyclone) and collects coarse dust, and is located in the uppermost stream of the dust collection means 28. The first separated dust collecting portion 26 has a unit shape including a case body 125 which is a cup portion having a bottomed cylindrical shape, and a cylindrical swivel portion 126 accommodated in the case body 125. ing. The first separated dust collecting portion 26 can be attached to and detached from the main body case 25 by rotating around the front lower portion as a center (fulcrum) while being placed on the projecting portion 33. In this state, the upper portion is supported with the upper portion inclined rearward, and the front portion of the mounting recess 44 is covered. The first separated dust collecting portion 26 is detachably locked to the main body case 25 by a first attaching / detaching mechanism (not shown).

  The case body 125 includes a cylindrical case body 131 as a dust collection body, a lid 132 pivotally supported by the case body 131, and an upper lid 133 attached to the upper portion of the case body 131. It has. An inlet 135 that is airtightly connected to the communication opening 103 is opened on one side of the rear portion of the case body 131, and dust-containing air is tangentially introduced into the case body 125 through the inlet 135. It is comprised so that it may flow in along.

  The case body 131 is a part that swirls the air flowing in from the inlet 135 inside and accommodates the dust (coarse dust) separated by the swirling inside, and is a member such as a synthetic resin having translucency, for example The inside (dust) is visible. Further, the lower end portion of the case main body 131 is a disposal opening 137 for discarding the dust accommodated in the case main body 131 to the outside.

  The lid 132 opens and closes the disposal opening 137 of the case main body 131 by rotation. The lid main body 141 having a slightly larger diameter than the case main body 131 and the lid main body 141 A seal member 142 disposed on the upper side, that is, the case main body 131 side is integrally provided.

  The seal member 142 is disposed on the lid body 141 in a circular shape so as to be pressed against the lower end portion of the disposal opening 137 with the lid 132 closed.

  The upper lid 133 covers the upper part of the case body 125 (the case main body 131), and is integrally provided with a handle portion 152 as a dust collecting portion gripping part, and is airtightly attached to the case main body 131. .

  The upper lid portion 133 defines a connection air passage 153 that communicates the case main body 131 with the second separated dust collecting portion 27. In addition, a discharge port 154 that constitutes the downstream end of the connection air passage 153 is provided at the rear portion of the upper lid portion 133 so as to be positioned on the upper rear portion of the case body 125. The discharge port 154 discharges the air that has passed through the case body 125 of the first separated dust collecting portion 26 to the second separated dust collecting portion 27 side, that is, the downstream side, and has a rubber packing or the like along the peripheral edge portion. A discharge port sealing member 155 is attached.

  Further, the swivel portion 126 is disposed inside the case body 125 (case body 131) concentrically (coaxially) with the case body 125 (case body 131). The swivel portion 126 includes a cylindrical swivel portion main body 161 and a compression portion 162 as a cylindrical enlarged portion integrally provided on the lower end side that is one end side of the swivel portion main body 161.

  The swivel unit main body 161 communicates with the connection air passage 153 at the upper end. The swivel unit main body 161 has a plurality of ventilation openings 166 communicating with the inside thereof, and a mesh-like dust collection filter 167 is attached to cover the ventilation openings 166. The swivel unit main body 161 is configured such that air from which dust (coarse dust) having a relatively large mass is separated by centrifugal force passes from the outside to the inside through the ventilation opening 166 (dust collection filter 167). It is configured to flow to 153.

  Further, the compression unit 162 is open on the lower side facing the lid 132, has a larger diameter than the swivel unit main body 161, and is continuous in a stepped shape with respect to the swivel unit main body 161. Further, a communication opening 168 that communicates with the lower end of the swivel unit main body 161 is provided at the center of the compression unit 162, and a mesh-like compression filter 169 is attached to cover the communication opening 168. ing. In the compression unit 162, a part of the air swirling around the outer periphery of the swivel unit main body 161 passes from the lower side through the communication opening 168 to the inside of the swivel unit main body 161, thereby collecting collected dust (coarse dust). ) Is pressed against the compression filter 169 and compressed.

  Further, as shown in FIGS. 1 to 6, the second separated dust collecting part 27 constituting the other part (downstream side) of the dust collecting means 28 has dust-containing air sucked by driving of the electric blower 31 (FIG. 8). Among them, relatively small dust (fine dust or fine dust) such as dust that could not be separated by the first separated dust collecting unit 26, that is, finer dust than coarse dust separated by the first separated dust collecting unit 26 is collected. It is to be centrifuged, and in this embodiment, is located on the most downstream side of the dust collecting means 28. The second separated dust collecting portion 27 is formed of, for example, a synthetic resin such as ABS, and the separated dust collecting portion main body 171 which is the second centrifugal separation portion main body as the dust collecting device main body, and the separated dust collecting portion. And a dust collection case 172 that is a fine dust reservoir as a dust reservoir located on the lower side of the separated dust collector main body 171. The separated dust collector main body 171 and the dust collector The case 172 is integrally locked by clamps 173 and 173 serving as holding members to form a unit shape, and is detachable from the mounting recess 44 of the main body case 25. The second separated dust collecting portion 27 is detachably locked to the main body case 25 by a second attaching / detaching mechanism (not shown).

  The separated dust collecting body 171 is a portion that is accommodated on the upper side of the mounting recess 44 in a state where the second separated dust collecting portion 27 is mounted on the body case 25 (the mounting recess 44 thereof). A lid 176 that opens and closes the upper side of the part 175 opposite to the dust collecting case 172. Between the separation part 175 and the lid part 176, an inflow air passage part 177 into which dust-containing air that has passed through the first separation dust collection part 26 and the connection air passage 153 flows from one end side is defined. In addition, an outflow air passage portion 178 in which the exhaust from the separation portion 175 flows out from the rear end side, which is the other end side, to the communication port 63 (the suction side of the electric blower 31) is defined in the lid portion 176. Has been.

  The separation unit 175 rotates the dust-containing air that has passed through the first separation dust collection unit 26 and is sucked into the interior by driving the electric blower 31, and centrifuges the dust. The outer frame portion 182 projecting so as to surround the upper side that is one direction side of the separation chamber 181 and the connecting portion 183 that is positioned on the lower side that is the other direction side of the separation chamber 181 are integrally provided.

  Separation chamber 181 is provided in a long cylindrical shape gradually reduced in diameter from the upper side to the lower side, that is, from the upstream side to the downstream side, in the inflow direction of the dust-containing air to the inflow air passage portion 177. A plurality of, for example four, separation chamber rows L are formed on the extension line, that is, along the front-rear direction. In the separation chamber row L, in this embodiment, for example, a central row L1 located at the center, and both side directions intersecting (orthogonal) with the inflow direction of the dust-containing air into the inflow air passage portion 177 of the central row L1, That is, the left column L2 and the right column L3 located on both the left and right sides are set. That is, in the present embodiment, the central row L1 is a separation chamber row located on the center side, and the left row L2 and the right row L3 are separation chamber rows located on both sides. Therefore, the separation chamber 181 is arranged in a square shape (matrix shape) as a whole in plan view. The respective separation chambers 181 in the left row L2 and the right row L3 are inclined so that the lower sides thereof approach the separation chambers 181 in the central row L1.

  In addition, each separation chamber 181 is provided with a rectifying unit 185 in an attachable / detachable manner at the top, and is configured to swirl the dust-containing air flowing in through the rectifying unit 185 along the inner peripheral surface. Further, each separation chamber 181 has at least the maximum inner diameter of the inner peripheral surface smaller than the case body 125 (case main body 131) of the first separation dust collecting portion 26, for example, the inner peripheral surface of the case body 125 (case main body 131). The diameter dimension is set to about half or less.

  Each rectification unit 185 includes a spiral rectification passage portion 188 communicating with the inflow air passage portion 177 via the introduction opening 187, and a ventilation portion located along the central axis of the rectification passage portion 188. An exhaust pipe part is provided integrally with a through-cylinder part 189. Furthermore, these rectification parts 185 are integrated in the separation chamber row L along with the connecting plate part 190 in the front-rear direction.

  Each of the rectifying passage portions 188 is provided along the periphery of the cylinder passing portion 189, and allows dust-containing air to flow from the introduction opening 187 into the separation chamber 181 along the tangential direction of the separation chamber 181.

  Here, the introduction opening 187 of the separation chamber 181 located in the center row L1 opens toward the inflow side of the dust-containing air into the inflow air passage portion 177, that is, the front side. In other words, dust-containing air flows into the separation chambers 181 located in the center row L1 from the front side. Therefore, the introduction opening 187 of the separation chamber 181 located in the central row L1 is opened along a plane along the left-right width direction that intersects (orthogonal) the passage direction of the dust-containing air of the inflow air passage portion 177. . The introduction openings 187 of the separation chambers 181 located in the central row L1 are alternately located on both sides from the front side to the rear side along the inflow direction of the dust-containing air.

  Further, in the left row L2, the inlet opening 187 of the separation chamber 181 located at one end side of the inflow air passage portion 177, in the present embodiment, the uppermost stream, that is, the foremost portion, flows in the dust-containing air into the inflow air passage portion 177. It opens toward the side, that is, the front side, and at the center side (the center row L1 side) in the both side directions, that is, the right side. In other words, dust-containing air flows from the front side into the separation chamber 181 located at the forefront of the left row L2. Therefore, the introduction opening 187 of the separation chamber 181 located at the forefront of the left row L2 is an opening along a plane along the left-right width direction that intersects (orthogonally) the direction of passage of the dust-containing air of the inflow air passage portion 177. doing. In addition, in this left row L2, introduction of the separation chamber 181 (the second and subsequent separation chambers 181 from the front) located on the other end side of the inflow air passage portion 177, in this embodiment, on the rear side (position excluding the frontmost portion). The opening 187 opens to the side opposite to the inflow side of the dust-containing air into the inflow air passage portion 177, that is, toward the rear side, and to the outside, that is, the left side that is the anti-center side (the side opposite to the center row L1). Yes. In other words, dust-containing air flows into the separation chamber 181 located on the rear side of the left row L2 from the rear side.

  Similarly, in the right row L3, the inlet opening 187 of the separation chamber 181 located at the one end side of the inflow air passage portion 177, in the present embodiment, the most upstream, that is, the foremost portion, of the dust-containing air to the inflow air passage portion 177. It opens toward the inflow side, that is, the front side, and at the center side (the center row L1 side) in both side directions, that is, the left side. In other words, dust-containing air flows from the front side into the separation chamber 181 located at the forefront of the right row L3. Therefore, the introduction opening 187 of the separation chamber 181 located at the foremost part of the right row L3 is opened along a plane along the left-right width direction intersecting (orthogonal) with the dust-containing air passage direction of the inflow air passage portion 177. doing. Further, in this right row L3, the introduction of the separation chamber 181 (the second and subsequent separation chambers 181 from the front) located on the other end side of the inflow air passage portion 177, in this embodiment, on the rear side (position excluding the frontmost portion). The opening 187 opens toward the side opposite to the inflow side of the dust-containing air into the inflow air passage portion 177, that is, toward the rear side, and on the outside, that is, the right side that is the anti-center side (the side opposite to the center row L1). Yes. In other words, dust-containing air flows into the separation chamber 181 located on the rear side of the right row L3 from the rear side.

  Furthermore, the introduction opening 187 of the separation chamber 181 (second separation chamber 181 from the front) located on the rear side (the position excluding the frontmost portion) of the left row L2 and the right row L3 is from the front side to the rear side, that is, The inclination angle is set to be smaller with respect to the inflow direction (front-rear direction) of the dust-containing air as it is separated from the inflow side of the dust-containing air. For this reason, the introduction opening 187 of the separation chamber 181 (separation chamber 181 second and subsequent from the front) located on the rear side (the position excluding the frontmost portion) of the left row L2 and the right row L3 is from the front side to the rear side. The projected area with respect to the inflow direction (front-rear direction) of the dust-containing air is reduced.

  The projected area with respect to the inflow direction (front-rear direction) of the dust-containing air means that the introduction opening 187 is a surface orthogonal to the inflow direction of the dust-containing air of the inflow air passage portion 177 (a surface extending in the left-right direction and the up-down direction). ) And is simply referred to as a projected area.

  Furthermore, in the present embodiment, in the left row L2 and the right row L3, the opening direction of the introduction opening 187 is line-symmetric with each other in the left-right width direction. In this way, by changing the projection area, orientation, position, and the like of the introduction openings 187 in the separation chambers 181 of the center row L1, the left row L2, and the right row L3, the inside of the inflow air passage portion 177 is changed. The dust-containing air flowing into the air can be uniformly distributed to the separation chambers 181 regardless of their positions.

  Further, each cylinder section 189 exhausts, or flows out, air from which dust (fine dust or fine dust) has been removed in the separation chamber 181 to the outflow air passage section 178, and is provided in a cylindrical shape. The upper end of 181 is coaxially disposed, and the lower end that is the upstream end communicates with the inside of the separation chamber 181 and the upper end that is the downstream end is connected to the outflow air passage portion 178 in an airtight manner.

  Further, the outer frame portion 182 is provided in a quadrangular shape in plan view, and has a box shape surrounding the outside of the entire separation chamber 181 in a frame shape. That is, the outer frame portion 182 is continuous with the outer peripheral surface of the separation chamber 181 and the bottom surface portion 182a to which the rectifying portion 185 is attached, the front surface 182b that is the upstream side surface raised from the bottom surface portion 182a, and the clamp 173 rotate. Both side surfaces 182c that are pivotally supported and a rear surface 182d that is a downstream side surface are provided, the upper side is opened, and the lid portion 176 is closed. An inflow opening 182e that is airtightly connected to the downstream end of the connection air passage 153 of the first separated dust collection portion 26 is opened in the front surface 182b. For this reason, the inflow air passage portion 177 is provided in a longitudinal shape along the front-rear direction so as to surround the entire outside of the position closer to the upper side of all the separation chambers 181. In the inflow air passage portion 177, the arrow A1 Also, as shown by arrow A3, after the dust-containing air has traveled straight from the inflow opening 182e at the front end toward the rear (arrow A1), both side surfaces along the inner surface (front side) of the rear surface 182d facing the inflow opening 182e. It flows to 182c (arrow A2), and further flows forward along the inner surface of these side surfaces 182c (arrow A3).

  In the present embodiment, the introduction openings 187 of all the separation chambers 181 are assumed to be provided with, for example, substantially equal opening areas.

  The connecting portion 183 is a portion serving as a lid of the dust collecting case 172, and the lower ends of all the separation chambers 181 communicate with each other and are provided in a longitudinal shape in the front-rear direction.

  The lid 176 is detachably locked to the separation unit 175 by the upper side of each clamp 173, and opens and closes the upper side of the separation unit 175 by being attached to and detached from the separation unit 175. The lid portion 176 includes a covering portion 192 that defines the upper side of the inflow air passage portion 177, and a lid portion main body 193 that covers the upper side (outside) of the covering portion 192. The covering portion 192 and the lid portion main body 193 is airtightly connected to the upper and lower sides, and an outflow air passage portion 178 is defined between the covering portion 192 and the lid portion main body 193. An outflow opening 194 serving as a downstream end of the outflow air passage portion 178 is opened between the rear portion of the covering portion 192 and the lid portion main body 193.

  The covering portion 192 is air-tightly connected to the downstream side of the separation portion 175, that is, the upper end side of the through-cylinder portion 189 of each rectifying portion 185, which is the downstream side of each separation chamber 181. A plurality of circular connection openings 192a communicating with 178 are formed. Accordingly, the downstream sides of all the separation chambers 181 communicate with the outflow air passage portion 178 in parallel. These connection openings 192a are provided corresponding to the number of separation chambers 181, that is, in this embodiment, four in the front-rear direction and three in the left-right width direction, for a total of twelve.

  Further, the outflow air passage portion 178 is provided in a longitudinal shape in the front-rear direction along the upper side of the inflow air passage portion 177. Accordingly, the outflow air passage portion 178 is configured in two layers, the inflow air passage portion 177 and the upper and lower layers. Further, the outflow air passage portion 178 is airtightly connected to the communication port 63 in a state where the second separated dust collecting portion 27 is attached to the main body case 25 (attachment concave portion 44 thereof), so that the outlet side of the electric blower 31 is provided. Communicate.

  On the other hand, the dust collection case 172 accommodates dust (fine dust) separated by the separated dust collection body 171 and the lower ends of the separation chambers 181 are connected to each other in an airtight manner via the connecting portions 183. .

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

  As shown in FIGS. 1 to 8, the first separated dust collecting portion 26 and the second separated dust collecting portion 27 are previously attached to the body case 25 of the cleaner body 13 during cleaning.

  When the second separated dust collecting portion 27 is attached, the second separated dust collecting portion 27 is fixed to the main body case 25 by the second attaching / detaching mechanism by being inserted and pushed into the attachment recess 44 from the front of the main body portion 32. In this state, the edge of the outflow opening 194, which is the downstream end of the outflow air passage 178, is pressed against the communication port seal member 64 and is airtightly connected to the communication port 63.

  Further, when attaching the first separated dust collecting portion 26, the front lower portion of the lid body 132 is placed on the protruding portion 33 while the handle portion 152 is gripped, and is rotated rearward around the front lower portion. . Then, the first separated dust collecting part 26 is fixed to the main body case 25 by the first attaching / detaching mechanism while being positioned in the left-right width direction with respect to the main body case 25. In this state, the edge portion of the inlet 135 of the first separation dust collecting portion 26 is pressed against the communication opening seal member 104 and hermetically connected to the communication opening 103, and the discharge port seal member 155 of the discharge port 154 is The discharge port 154 and the inflow opening 182e are hermetically connected by being pressed against the edge of the inflow opening 182e of the second separated dust collecting portion 27.

  Therefore, the pipe portion 12 and the suction side of the electric blower 31 are hermetically connected via the first separated dust collecting portion 26 and the second separated dust collecting portion 27 to form the air passage W.

  The user connects the plug unit 121a to the commercial AC power source and enables power supply by the power source unit 121, and grips the grip unit 21 and operates the desired setting button 22 to The supplied control means controls the phase angle of the electric blower 31 through the control element, and drives the electric blower 31 in the operation mode set by the operation of the setting button 22.

  The negative pressure generated by the driving of the electric blower 31 is the communication air passage portion 115, the communication port 63, the second separation dust collection portion 27, the first separation dust collection portion 26, the communication opening 103, the upstream side of the downstream duct portion 39. It acts on the pipe part 12 through the duct part 38 and the main body suction port 107. In the pipe portion 12, negative pressure acts on the hose body 16, the extension pipe 18, and the floor brush 19, and dust is sucked together with air from the tip of the floor brush 19 placed on the surface to be cleaned.

  The dust-containing air passes through the floor brush 19, the extension pipe 18, and the hose body 16, and passes through the communication opening 103 of the upstream duct portion 38 from the main body suction port 107 to the inside of the case body 125 of the first separation dust collection portion 26. Through the inlet 135. The dust-containing air flowing in from the inlet 135 swirls in the circumferential direction between the case body 125 (case body 131) and the swivel part body 161 of the swivel part 126, and the coarse dust is centrifuged and gravity is lowered. It falls and is collected in the lower part of the case body 125 (case body 131) of the first separated dust collection unit 26.

  The dust-containing air swirling in the first separated dust collecting portion 26 flows into the swirling portion main body 161 from the ventilation opening 166 through the dust collecting filter 167. When passing through the dust collection filter 167, dust finer than coarse dust in the dust-containing air is collected by the dust collection filter 167. Part of the dust-containing air swirling in the first separated dust collecting section 26 flows toward the compression section 162 and flows into the swiveling section main body 161 from the communication opening 168 via the compression filter 169. . When passing through the compression filter 169, dust finer than coarse dust in the dust-containing air is collected in the compression filter 169 and also collected in the case body 125 (case body 131). Dust is pressed against the compression filter 169 and compressed.

  The dust-containing air (air containing fine dust) that has passed through the swivel unit main body 161 passes through the connection air passage 153, is then discharged from the discharge port 154, and flows into the inflow air passage portion 177 from the inflow opening 182e. To do. At this time, as shown by arrows A1 to A3 (FIG. 1), the dust-containing air is first transferred from the inflow opening 182e to the rear surface 182d in the rearward direction with the center row L1, the left row L2, and the right row L3. Go straight between (arrow A1). For this reason, the introduction openings 187 of the separation chambers 181 located in the central row L1 open toward the front side, and are alternately positioned on both sides from the front side to the rear side, thereby relatively upstream (front side). The introduction opening 187 of the separation chamber 181 located at the position does not hinder the inflow of dust-containing air into the introduction opening 187 of the separation chamber 181 located at the relatively downstream side (rear side). Dust-containing air flows evenly into the separation chambers 181 facing the (arrow A1) substantially perpendicularly and positioned in the central row L1. In addition, the introduction opening 187 of the separation chamber 181 located at the foremost portion which is the most upstream of the left row L2 and the right row L3 opens toward the front side and on the center side in both side directions, so that the central row L1 And the left column L2 and the right column L3, the introduction opening 187 is opposed substantially perpendicularly to the dust-containing air (arrow A1) flowing between the left column L2 and the right column L3. Flows in. Further, the dust-containing air that has not flowed into the separation chamber 181 located in the central row L1 flows to the left and right along the rear surface 182d (arrow A2), and further flows back along the both side surfaces 182c. (Arrow A3). Therefore, in the left row L2 and the right row L3, the introduction openings 187 of the second and subsequent separation chambers 181 from the front are opened to the rear and outward, and the introduction openings 187 of the separation chambers 181 are provided. Since the projected area with respect to the inflow direction (front-rear direction) of the dust-containing air is reduced from the front side to the rear side, this folding is returned to the dust-containing air (arrow A3) folded from the rear surface 182d. Since the introduction opening 187 gradually opposes in a large area from the separation chamber 181 located on the rear side, which is the upstream side in the direction, to the separation chamber 181 located on the front side, which is the downstream side. Thus, the dust-containing air flows evenly. Therefore, the dust-containing air flows evenly into all the separation chambers 181.

  The dust-containing air that has flowed into the separation chamber 181 swirls in the circumferential direction along the inner peripheral surface of the separation chamber 181 at a flow velocity greater than the swirling flow velocity in the case body 125 of the first separation dust collection unit 26. Then, fine dust (fine dust) is centrifuged, and gravity falls from the lower end of each separation chamber 181 to the dust collecting case 172 via the connecting portion 183, and is collected in the dust collecting case 172. The clear air from which fine dust (fine dust) has been removed passes through the cylinder 189 of the rectifying unit 185, is extracted to the outflow air passage unit 178, and merges with each other.

  The air merged into the outflow air passage 178 is sucked from the outflow opening 194 through the communication port 63 into the electric blower 31 in the electric blower chamber from the communication air passage 115 of the downstream duct 39. After passing through the blower 31 and cooling the electric blower 31, it is exhausted from the exhaust port located on the front side of the electric blower 31 to the side to become exhaust air. The exhaust air flows through the filter 119 and flows into the connection air passage portion 117 of the downstream duct portion 39, and flows from the connection air passage portion 117 into the power supply chamber 40. The power supply unit 121 is cooled. The exhaust air that has passed through the power supply chamber 40 to the rear is diffused when flowing into the diffusion chamber 41, and is distributed and exhausted from the exhaust holes 109 to the outside of the main body case 25 of the cleaner body 13.

  When the cleaning is completed, the user operates the setting button 22 so that the control unit stops the electric blower 31.

  When a predetermined amount or more of dust has accumulated in the dust collecting case 172 of the first separated dust collecting unit 26 and the second separated dust collecting unit 27, the user can use the first separated dust collecting unit 26 and the second separated dust collecting unit 172. The dust portions 27 can be removed from the main body case 25 to discard dust.

  As described above, according to the first embodiment, the introduction openings 187 of the separation chambers 181 in the central row L1 are directed toward the front side, which is the inflow side of the dust-containing air into the inflow air passage portion 177, and on both sides. Dust air that has flowed into the inflow air passage portion 177 is placed in the center row L1 by being alternately positioned in the direction and opening along a direction substantially orthogonal to the inflow side of the dust air. It is possible to reliably suck into each separation chamber 181.

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

  In the second embodiment, the introduction opening 187 of the separation chamber 181 in the central row L1 of the first embodiment is separated from the front side, which is the inflow side of the dust-containing air to the inflow air passage portion 177, from the rear side. Accordingly, the projected area with respect to the inflow direction (front-rear direction) of the dust-containing air into the inflow air passage portion 177 is gradually increased. That is, the introduction opening 187 of the separation chamber 181 in the central row L1 is separated from the front side to the rear side, that is, from the inflow side of the dusty air, with respect to the dusty air inflow direction (front-rear direction). The inclination angle is set to be large and small.

  Thus, as the introduction opening 187 of the separation chamber 181 in the central row L1 is separated from the front side, which is the inflow side of the dust-containing air to the inflow air passage portion 177, to the rear side, the introduction opening 187 enters the inflow air passage portion 177. By gradually increasing the projected area with respect to the inflow direction of the dust-containing air, the introduction opening 187 is located closer to the separation chamber 181 located on the downstream side (rear side) where the air volume is relatively small. Since the opening is made with a wide area, the inflow amount of the dust-containing air into the separation chambers 181 in the central row L1 can be made more uniform.

  Then, according to at least one embodiment described above, in the left row L2 and the right row L3, the introduction opening 187 of the separation chamber 181 on the front side of the inflow air passage portion 177 is introduced into the inflow air passage portion 177. The front side which is provided on the center side toward the front side which is the inflow side and the introduction opening 187 of the separation chamber 181 on the rear side of the inflow air passage portion 177 is the inflow side of the dust-containing air to the inflow air passage portion 177 As shown by the arrows A1 to A3, the straight air flow from the inflow air passage portion 177 to the rear side, and the rear surface 182d. Corresponding to the flow and flow rate of the dust-containing air flowing so as to fold along the both side surfaces 182c, the inflow amount of the dust-containing air flowing into each separation chamber 181 from each introduction opening 187 depends on the position of the separation chamber 181. Can be made uniform.

  That is, as in each of the above embodiments, by arranging the separation chambers 181 in a square shape (matrix shape), the area efficiency can be improved compared to the case where the separation chambers 181 are arranged in a circular shape, etc. It is not easy to make the inflow of dust-containing air uniform. Therefore, as described above, the direction of the introduction opening 187 of each separation chamber 181 is set for each position corresponding to the flow and flow rate of the dust-containing air, thereby improving the area efficiency and improving the area efficiency. The amount of inflow of dust-containing air can be made uniform.

  Accordingly, it is possible to reduce the size of the vacuum cleaner 11 (second separation dust collecting unit 27), to suppress variation in the amount of dust-containing air that is centrifuged in each separation chamber 181, and to improve the dust separation performance.

  In addition, the introduction opening 187 of the separation chamber 181 on the rear side (second and subsequent from the front) of the inflow air passage portion 177 in the left row L2 and the right row L3 is the inflow side of the dust-containing air to the inflow air passage portion 177. By reducing the projection area as it moves away from the front side to the rear side, the air volume is relatively large with respect to the dust-containing air (arrow A3) that flows back from the rear surface 182d side along the both side surfaces 182c. As the separation chamber 181 located on the downstream side (front side) decreases, the introduction opening 187 opens to a larger area with respect to the dust-containing air, so each separation chamber located on the rear side of the left row L2 and the right row L3 Dust-containing air can be evenly introduced into each of the 181s.

  Further, the introduction openings 187 of the separation chambers 181 in the central row L1 are alternately provided in both directions from the front side to the rear side toward the front side that is the inflow side of the dust-containing air to the inflow air passage portion 177. Accordingly, the introduction openings 187 do not hinder the inflow of the dust-containing air, and the inflow amount of the dust-containing air into the separation chambers 181 in the center row L1 can be more reliably uniformized.

  Further, the first separated dust collecting section 26 is provided upstream of the second separated dust collecting section 27, and the first separated dust collecting section 26 for centrifuging the dust from the dust-containing air sucked by the driving of the electric blower 31 is provided. Due to the two-stage configuration of the dust part 26 and the second separated dust collection part 27, dust can be collected more reliably.

  In each of the above embodiments, the first separated dust collecting unit 26 may have any configuration as long as coarse dust that is relatively large dust such as fiber dust can be collected from the dust-containing air that has passed through the upstream duct unit 38. can do.

  In addition, the introduction openings 187 of all the separation chambers 181 have substantially the same opening area, and the projected area is adjusted by the inclination angle with respect to the inflow direction of the dust-containing air. For example, the opening area of the introduction opening 187 itself is changed. The projected area may be adjusted by

  Furthermore, if the separation chamber row L is configured to include three or more rows on the left and right, the same operational effects can be achieved by configuring the separation chamber row L in the same manner as in the above embodiments. For example, when four separation chamber columns L are provided on the left and right, the two central columns are configured in the same manner as the central column L1, and the left and right columns are configured in the same manner as the left column L2 and the right column L3, respectively. Thus, the same effects as those of the above embodiments can be obtained. That is, for example, when four separation chamber rows L are provided, the central side in both directions refers to the central two rows, and the anti-central side (outside) refers to the opposite side of the central two rows. To do.

  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, and a floor brush 19 is directly attached to the vacuum cleaner body 13. A handy type that is connected and cleaned while carrying the cleaner main body 13 or a robot type that the cleaner main body 13 self-runs by driving wheels (running wheels) or autonomously travels can be used.

  And although some embodiment of this invention was described, these embodiment is shown as an example and is not intending limiting the range of invention. These novel embodiments can be implemented in various other forms, and various omissions, replacements, and changes can be made without departing from the scope of the invention. These embodiments and modifications thereof 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
13 Vacuum cleaner body
26 First separation dust collector as dust collector
27 Second separation dust collector as dust collector
31 Electric blower
177 Inlet air passage
181 Separation chamber
187 Introduction opening L Separation chamber row

Claims (5)

A vacuum cleaner body equipped with an electric blower;
A dust collecting device that centrifuges and collects dust from the dust-containing air sucked by the driving of the electric blower;
The dust collector is
An inflow air passage portion through which dust-containing air flows from one end side;
A plurality of separation chambers arranged in a direction along the inflow direction of the dust-containing air to the inflow air passage portion, wherein the inflow air passage portion has an introduction opening for introducing the dust-containing air in communication with the inflow air passage portion; Separation chamber rows provided in three or more rows on both sides intersecting the inflow direction of the dust-containing air to
The separation chamber rows located at least on both sides are such that the introduction opening of the separation chamber on one end side of the inflow air passage portion is directed toward the inflow side of the dust-containing air to the inflow air passage portion, and the separation chamber row Provided on the center side in the both-side direction, the introduction opening of the separation chamber on the other end side of the inflow air passage portion is directed to the side opposite to the inflow side of the dust-containing air to the inflow air passage portion, and It is provided in the opposite center side of the said both sides of the said separation chamber row | line | column. The vacuum cleaner characterized by the above-mentioned. The opening of the separation chamber on the other end side of the inflow air passage portion of the separation chamber row located on both sides projects to the inflow direction of the dust-containing air as the distance from the inflow side of the dust-containing air to the inflow air passage portion increases. The vacuum cleaner according to claim 1, wherein the area is small. The opening of the separation chamber of the separation chamber row located on the center side is directed toward the inflow side of the dust-containing air into the inflow air passage portion and the dust-containing air into the inflow air passage portion of the separation chamber row. The vacuum cleaner according to claim 1, wherein the vacuum cleaner is alternately positioned in both side directions intersecting with the inflow direction. As the separation opening of the separation chamber in the separation chamber row located at the center side is separated from the inflow side of the dust-containing air into the inflow air passage portion, the projected area with respect to the inflow direction of the dust-containing air into the inflow air passage portion gradually increases. The vacuum cleaner according to any one of claims 1 to 3, wherein the vacuum cleaner is larger. The electricity according to any one of claims 1 to 4, further comprising a dust collecting unit that is located upstream from the dust collecting device and that centrifuges dust from the dust-containing air sucked by driving of the electric blower. Vacuum cleaner.

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