JP6494900B2 - Electric vacuum cleaner - Google Patents

Description

  Embodiments according to the present invention relate to a vacuum cleaner.

  2. Description of the Related Art A centrifugal type vacuum cleaner is known that includes a cylindrical container body and a filter that is housed in the container body and partitions an annular separation chamber between the container body. This conventional vacuum cleaner centrifuges air and dust by a swirling flow generated in the separation chamber.

JP 2012-236042 A

  By the way, the dust sucked by the electric vacuum cleaner includes granular dust and fibrous dust such as lint and hair. And the long fibrous dust exceeding the outer peripheral length of the filtration filter part will accidentally wind around the filtration filter part.

  Once fibrous dust is wound around the filtration filter, it is difficult to unravel. If fibrous dust wraps around the filtration filter, the vacuum cleaner user must remove the fibrous dust by cutting it with scissors or forcing it off. There are inconveniences in terms of maintenance and hygiene.

  Therefore, the present invention proposes an electric vacuum cleaner in which fibrous dust is not easily wound around a cylindrical filter inside the cylindrical container body.

In order to solve the above problems, a vacuum cleaner according to an embodiment of the present invention includes a cylindrical container body, a cylindrical shape shorter than the container body, and housed in the container body, A filtration filter section partitioning an annular separation chamber in between, the separation filter having an outer diameter larger than the filtration filter section and smaller than the container body, adjacent to one end of the filtration filter section and adjacent to each other A separation portion that separates the chamber and the dust collection chamber and is fixed non-rotatably with respect to the container body; and the filtration filter portion with respect to the container body and the separation portion with the center line of the container body as a rotation axis A rotation support portion that is rotatably supported, and the filtration filter portion includes a cylindrical shape retaining frame having an opening on a side surface, and a filtration filter provided by surrounding the shape retention frame in a cylindrical shape. It has, and It rotates by receiving the flow of air swirling the serial separation chamber.

The perspective view which shows the external appearance of the vacuum cleaner which concerns on embodiment of this invention. The longitudinal cross-sectional view which shows typically the dust separation dust collector of the vacuum cleaner which concerns on this invention. The perspective view which shows the 1st filtration filter part of the vacuum cleaner which concerns on this invention. The cross-sectional view which shows typically the dust separation dust collector of the conventional vacuum cleaner. The longitudinal cross-sectional view which shows typically the dust separation dust collector of the conventional vacuum cleaner. The cross-sectional view which shows typically the dust separation dust collector of the vacuum cleaner which concerns on this invention. The longitudinal cross-sectional view which shows typically the dust separation dust collector of the vacuum cleaner which concerns on this invention.

  An embodiment of a vacuum cleaner according to the present invention will be described with reference to FIGS. 1 to 7.

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

  As shown in FIG. 1, the vacuum cleaner 1 according to the present embodiment is a so-called canister-type vacuum cleaner. The vacuum cleaner 1 includes a vacuum cleaner body 2 that can travel on a surface to be cleaned, and a pipe portion 3 that is detachable from the cleaner body 2. The vacuum cleaner main body 2 and the pipe part 3 are fluidly connected.

  The vacuum cleaner main body 2 includes a main body case 5, a pair of wheels 6 disposed on both left and right sides of the main body case 5, a detachable dust separating and collecting device 7 disposed on the front half of the main body case 5, An electric blower 8 housed in the latter half of the main body case 5, a main body control unit 9 that mainly controls the electric blower 8, and a power cord 11 that guides electric power to the electric blower 8. The vacuum cleaner main body 2 drives the electric blower 8 with the electric power supplied via the power cord 11, causes the negative pressure accompanying the drive of the electric blower 8 to act on the pipe portion 3, and removes dust from the surface to be cleaned through the pipe portion 3. Inhales the contained air (hereinafter referred to as “dusty air”), separates the dust from the dusty air, collects and accumulates the separated dust, and exhausts the separated air.

  A main body connection port 12 is provided in the front portion of the main body case 5. The main body connection port 12 is a fluid inlet of the vacuum cleaner main body 2 and fluidly connects the pipe portion 3 and the dust separating and collecting device 7.

  The wheel 6 is a large-diameter traveling wheel and supports the cleaner body 2.

  The dust separation and dust collection device 7 is from air containing dust (hereinafter referred to as “dust-containing air”) that flows from the surface to be cleaned through the tube portion 3 and the main body connection port 12 by the negative pressure generated by the electric blower 8. Separates, collects and accumulates dust. On the other hand, the dust separating and collecting device 7 sends clean air from which dust has been removed to the electric blower 8.

  The dust separating and collecting device 7 separates, collects, and accumulates dust from the dust-containing air flowing into the cleaner body 2. On the other hand, the dust separating and collecting apparatus 7 sends clean air from which dust is removed to the electric blower 8. The dust separation and dust collection device 7 adopts a centrifugal separation system and separates dust and air by a swirl flow.

  The electric blower 8 sucks air from the dust separating and collecting device 7 to generate a negative pressure (suction negative pressure).

  The main body control unit 9 includes a microprocessor (not shown) and a storage device (not shown) for storing various arithmetic programs executed by the microprocessor, parameters, and the like. The storage device stores a plurality of operation modes set in advance. The plurality of operation modes set in advance correspond to user operations accepted by the pipe section 3. Each operation mode is set to a different input value (input value of the electric blower 8). In response to a user operation received by the pipe unit 3, the main body control unit 9 selectively selects an arbitrary operation mode corresponding to the operation content from a plurality of preset operation modes and reads out from the storage unit The electric blower 8 is controlled according to the read operation mode.

  The power cord 11 supplies power to the cleaner body 2 from a wiring plug connector (not shown, so-called outlet). The power cord 11 has a plug 14 at the free end.

  The pipe part 3 sucks dust-containing air from the surface to be cleaned by the negative pressure acting from the cleaner body 2 and guides it to the cleaner body 2. The pipe section 3 is fluidly connected to the connection pipe 19 as a joint that is detachably connected to the cleaner body 2, the dust collection hose 21 that is fluidly connected to the connection pipe 19, and the dust collection hose 21. A hand operating tube 22, a gripping part 23 projecting from the hand operating tube 22, an operating part 24 provided on the gripping part 23, an extension tube 25 detachably connected to the hand operating tube 22, and an extension tube 25 And a suction port body 26 that is detachably connected.

  The connection pipe 19 is a joint that is detachable from the main body connection port 12, and is fluidly connected to the dust separating and collecting device 7 through the main body connection port 12.

  The dust collection hose 21 is a long and flexible substantially cylindrical hose. One end of the dust collecting hose 21 (here, the rear end) is fluidly connected to the connecting pipe 19. The dust collecting hose 21 is fluidly connected to the dust separating and collecting device 7 through the connecting pipe 19.

  The hand operation tube 22 relays the dust collecting hose 21 and the extension tube 25. One end (here, the rear end) of the hand operating tube 22 is fluidly connected to the other end (here, the front end) of the dust collecting hose 21. The hand operating tube 22 is fluidly connected to the dust separating and collecting device 7 through the dust collecting hose 21 and the connecting tube 19.

  The grip part 23 is a part that the user grips with the hand to operate the vacuum cleaner 1. The grip portion 23 has an appropriate shape that can be easily gripped by a user and protrudes from the hand operating tube 22.

  The operation unit 24 includes a switch associated with each operation mode. Specifically, the operation unit 24 includes a stop switch 24 a associated with an operation stop operation of the electric blower 8 and an activation switch 24 b associated with an operation start operation of the electric blower 8. The stop switch 24 a and the start switch 24 b are electrically connected to the main body control unit 9. The user of the vacuum cleaner 1 can alternatively select the operation mode of the electric blower 8 by operating the operation unit 24. The start switch 24 b also functions as an operation mode selection switch during operation of the electric blower 8. In this case, every time the operation signal is received from the start switch 24b, the main body control unit 9 switches the operation mode in the order of strong → medium → weak → strong →. Note that the operation unit 24 may individually include a weak operation switch (not shown), a medium operation switch (not shown), and a strong operation switch (not shown) instead of the start switch 24b.

  The extension tube 25 is an elongated substantially cylindrical tube that can be expanded and contracted. The extension tube 25 has a telescopic structure in which a plurality of cylindrical bodies are overlapped. One end portion (here, the rear end portion) of the extension tube 25 and the other end portion (here, the front end portion) of the hand operation tube 22 have a detachable joint structure. The extension pipe 25 is fluidly connected to the dust separating and collecting apparatus 7 through the hand operating pipe 22, the dust collecting hose 21 and the connecting pipe 19.

  The suction port body 26 has a structure capable of running or sliding on a surface to be cleaned such as a wooden floor or a carpet, and has a suction port 28 on the bottom surface facing the surface to be cleaned in the running state or the sliding state. The suction port body 26 includes a rotatable rotary cleaning body 29 disposed in the suction port 28 and an electric motor 31 that drives the rotary cleaning body 29. One end (here, the rear end) of the suction port body 26 is provided with a detachable joint structure at the other end (here, the front end) of the extension pipe 25. The suction port body 26 is fluidly connected to the dust separating and collecting device 7 through the extension pipe 25, the hand operating pipe 22, the dust collecting hose 21 and the connecting pipe 19. That is, the suction port body 26, the extension tube 25, the hand operation tube 22, the dust collection hose 21, the connection tube 19, and the dust separation and dust collection device 7 are suction air paths from the electric blower 8 to the suction port 28.

  The electric vacuum cleaner 1 starts the electric blower 8 when accepting a user operation on the start switch 24b. For example, when the vacuum cleaner 1 receives an operation on the start switch 24b while the electric blower 8 is stopped, the electric blower first operates the electric blower 8 in the strong operation mode, and receives an operation on the start switch 24b again. 8 is operated in the medium operation mode, and when the operation for the start switch 24b is accepted three times, the electric blower 8 is operated in the weak operation mode, and the same is repeated thereafter. The strong operation mode, the medium operation mode, and the weak operation mode are a plurality of operation modes set in advance, and the input value to the electric blower 8 is small in the order of the strong operation mode, the medium operation mode, and the weak operation mode. The started electric blower 8 exhausts air from the dust separating and collecting device 7 to make the inside negative pressure.

  The negative pressure in the dust separating and collecting device 7 is passed through the main body connection port 12, the connection tube 19, the dust collection hose 21, the hand control tube 22, the extension tube 25, and the suction port body 26 in order. It acts on the suction port 28. The vacuum cleaner 1 cleans the surface to be cleaned by sucking dust on the surface to be cleaned together with air by the negative pressure applied to the suction port 28. The dust separating and collecting apparatus 7 separates and accumulates dust from the dust-containing air sucked into the vacuum cleaner 1. On the other hand, the dust separating and collecting device 7 sends the air separated from the dust-containing air to the electric blower 8. The electric blower 8 exhausts the air sucked from the dust separating and collecting device 7 to the outside of the cleaner body 2.

  Next, the dust separating and collecting apparatus 7 will be described in detail.

  FIG. 2 is a longitudinal sectional view schematically showing a dust separating and collecting apparatus for a vacuum cleaner according to the present invention.

  As shown in FIG. 2, the dust separating and collecting apparatus 7 according to the present embodiment has a substantially cylindrical shape as a whole. The dust separating and collecting apparatus 7 includes a container body 35, a suction pipe 36, a first filtration filter unit 37, a separation unit 38, a return filtration filter unit 39, a rotation support unit 41, a lid wall 42, a discharge A tube 43 and a second filtration filter unit 45 are provided.

  Note that the dust separating and collecting apparatus 7 may have the center line C of the cylindrical container main body 35 oriented in the vertical direction or in the horizontal direction as the posture in the state of being attached to the cleaner body 2. It may be tilted at any angle.

  The container body 35 has a cylindrical shape having an open end 47 at one end and a closed end 48 at the other end. The container body 35 is an outer shell that partitions a separation chamber 51 that centrifuges dust-containing air into dust and air and a dust collection chamber 52 that accumulates the separated dust.

  The suction pipe 36 is biased toward the open end 47 side of the side wall 35 a of the container body 35 and is connected to the container body 35. The suction pipe 36 is a fluid inlet of the dust separating and collecting device 7. The suction pipe 36 guides the air flowing into the dust separating and collecting device 7 from the pipe part 3 into the container main body 35 in the tangential direction of the inner peripheral surface of the container main body 35 and generates a swirl flow F in the container main body 35. Let The suction pipe 36 is integrally formed on the side wall 35a. As long as the swirl flow F is generated in the container body 35, the suction pipe 36 is inclined with respect to a plane perpendicular to the center line C of the container body 35, for example, a horizontal plane when the center line C is oriented in the vertical direction. May be.

  The first filtration filter unit 37 has a cylindrical shape shorter than the container body 35. One end of the first filtration filter portion 37 (the end close to the open end 47 of the container body 35) is adjacent to the lid wall 42. The first filtration filter unit 37 is housed in the container body 35 and partitions the annular separation chamber 51 between the container body 35. The first filtration filter unit 37 is a primary filter of the dust separating and collecting device 7. The separation chamber 51 separates the dust and air from the dust-containing air by generating a swirling flow F by separating the outer peripheral surface of the first filtration filter portion 37 and the inner peripheral surface of the container body 35. Naturally, the first filtration filter unit 37 is used in the container main body in a period in which the swirl flow F in the separation chamber 51 is not sufficiently developed, such as immediately after the start of the electric blower 8 or in a stop transition. Dust outflow from 35 to the discharge pipe 43 is prevented.

  Further, the first filtration filter unit 37 includes a cylindrical shape retaining frame 53 that is largely open on a side surface, and a first filtration filter 55 provided on the shape retaining frame 53. The first filtration filter 55 is wound in a cylindrical shape so as to surround the shape retaining frame 53.

  The shape retaining frame 53 holds the first filtration filter 55 in a cylindrical shape. The shape retaining frame 53 includes a linear frame member 56 disposed at a portion corresponding to the cylindrical side surface, and an annular frame member 57 connected to the frame member 56 and corresponding to the edges of both ends of the cylindrical shape. .

  The isolation part 38 has an outer diameter shape that is larger than the first filtration filter part 37 and smaller than the container body 35. The isolation portion 38 is adjacent to the other end portion of the first filtration filter portion 37 (the end portion on the side close to the closed end 48 of the container body 35). The isolation unit 38 separates the separation chamber 51 and the dust collection chamber 52 adjacent to each other. The isolation part 38 has an opening 58. The opening 58 is closer to the center line C of the container body 35 than the gap 59 between the outer peripheral edge of the isolation part 38 and the inner peripheral surface of the container body 35, and like the gap 59, the separation chamber 51 and the dust collection chamber 52 are fluidized. Connect to. The space on the bottom side of the container main body 35 with respect to the isolation portion 38 is a dust collection chamber 52 that accumulates dust flowing from the separation chamber 51 through the gap 59. The clearance 59 guides the swirl flow F generated in the separation chamber 51 to the dust collection chamber 52 together with dust, and the opening 58 returns the swirl flow F guided in the dust collection chamber 52 to the separation chamber 51.

  In addition, the isolation | separation part 38 may exhibit the bottomed cylindrical shape open | released toward the bottom face of the container main body 35, as shown by the dashed-two dotted line in FIG. In this case, the separating portion 38 indicated by a two-dot chain line includes a cylindrical side wall 63 that separates the gap 61 from the container body 35 and the gap 62 from the bottom surface of the container body 35. The separation chamber 51 and the dust collection chamber 52 are fluidly connected through gaps 59, 61 and 62. The gap 61 separates the inner peripheral surface of the container body 35 and the outer peripheral surface of the isolation part 38 over the entire periphery. The gaps 59, 61, 62 guide the swirling flow F generated in the separation chamber 51 to the dust collection chamber 52 together with dust.

  The return filtration filter unit 39 is provided in the opening 58 of the isolation unit 38. The return filtration filter unit 39 may be a coarse filter, for example, a mesh filter, to the extent that fibrous dust such as lint and cotton flowing into the dust collection chamber 52 does not return to the separation chamber 51.

  The rotation support unit 41 rotatably supports the first filtration filter unit 37 with the center line C of the container body 35 as a rotation axis. The rotation support part 41 includes a first axis holding part 65 provided at the bottom of the container body 35, a second axis holding part 66 disposed on the open end 47 side of the container body 35, and a first axis holding part. A shaft core portion 67 spanned between 65 and the second shaft core holding portion 66 and the other end portion of the first filtration filter portion 37 (the end portion on the side close to the closed end 48 of the container body 35). And a second bearing 69 provided at one end of the first filtration filter portion 37 (the end close to the open end 47 of the container body 35).

  The first axis holding part 65 and the second axis holding part 66 are bosses that support the rod-shaped axis part 67 on the center line C of the container body 35.

  The second axis holding part 66 is disposed concentrically with respect to the center line C of the container body 35. The second axis holding part 66 is fixed to the lid wall 42 or the discharge pipe 43 by a plurality of aggregates 71 extending radially. The space between the plurality of aggregates 71 allows the air flow from the inside of the first filtration filter portion 37 to the discharge pipe 43 to pass therethrough.

  The shaft core portion 67 is bridged between the first shaft core holding portion 65 and the second shaft core holding portion 66 and fixed to the container body 35. The shaft core portion 67 is connected to the first shaft core half portion 72 that reaches the isolation portion 38 from the first shaft core holding portion 65 at the bottom of the container body 35, and the second shaft core holding portion is joined to the first shaft core half portion 72. A second half axis 73 reaching the portion 66.

  The first shaft half half 72 supports the isolation part 38 and fixes the isolation part 38 to the container body 35 in a non-rotating manner. The first shaft half half 72 is provided in the dust collecting chamber 52 and includes a resistor 75 that prevents the flow of air that flows into the dust collecting chamber 52 from the separation chamber 51 and swirls to generate a vortex.

  The resistor 75 has a plate shape that protrudes from the first axial half 72 in the radial direction of the container body. The resistor 75 disturbs the air flow around the first axial half 72 and collects the dust in the dust collecting chamber 52 around the first axial half 72 or collects the dust. The accumulation of dust in the chamber 52 is promoted. The resistor 75 may be provided at the bottom of the container main body 35 in addition to the first shaft half half 72 and may be integrally formed with the container main body 35, and biased toward the inner peripheral surface of the container main body 35. May be.

  The second shaft half half 73 is made of metal, and rotatably holds the first filtration filter portion 37 via the first bearing 68 and the second bearing 69.

  The first bearing 68 and the second bearing 69 are so-called oil-less bearings or ball bearings which are self-lubricating sliding bearings impregnated with lubricating oil.

  The first filtration filter portion 37 includes a first bearing holding portion 76 that holds the first bearing 68 and a second bearing holding portion 77 that holds the second bearing 69.

  The first bearing holding portion 76 is provided on the bottom wall 37 a that closes the other end of the first filtration filter portion 37 (the end close to the closing end 48 of the container body 35).

  The second bearing holding portion 77 is disposed concentrically with respect to one end portion of the first filtration filter portion 37 (the end portion on the side close to the open end 47 of the container body 35) and the first filtration filter portion 37. The second bearing holding part 77 is fixed to the first filtration filter part 37 by a plurality of aggregates 78 extending radially. The space between the plurality of aggregates 78 allows the air flow from the inside of the first filtration filter portion 37 to the discharge pipe 43 to pass therethrough.

  Since the first filtration filter unit 37 is rotatably supported by the rotation support unit 41, the first filtration filter unit 37 receives the flow of air swirling in the separation chamber 51, that is, swirl flow F, and rotates. The swirling flow F imparts rotational force to the first filtration filter unit 37 in the process of flowing along the outer peripheral surface of the first filtration filter unit 37 or in the process of flowing into the first filtration filter unit 37 through the first filtration filter 55. To do.

  The lid wall 42 closes the open end 47 of the container body 35. The lid wall 42 has an opening 42 a that is substantially concentric with the container body 35. The opening 42 a fluidly connects the space inside the first filtration filter portion 37 and the discharge pipe 43.

  A stepped fitting portion 79 that prevents intrusion of dust is provided in an adjacent portion between the first filtration filter portion 37 and the isolation portion 38.

  Since the first filtration filter unit 37 rotates relative to the lid wall 42, the first filtration filter unit 37 is adjacent to the lid wall 42 and the first filtration filter unit 37 from the separation chamber 51 side. A seal portion 81 that prevents the inflow of air into the inner space is provided. If dust or the like enters a minute gap between the first filtration filter portion 37 and the lid wall 42, the first filtration filter portion 37 is prevented from rotating. Therefore, the seal portion 81 prevents the air from flowing through the minute gap between the first filtration filter portion 37 and the lid wall 42 or the intrusion of dust to ensure the reliable rotation of the first filtration filter portion 37. The seal portion 81 has, for example, a so-called labyrinth structure.

  The discharge pipe 43 closes the open end 47 of the container body 35 and covers the lid wall 42. The discharge pipe 43 is a fluid outlet of the dust separating and collecting device 7, and partitions the exhaust air passage 82 that sends out air passing through the first filtration filter unit 37 and the second filtration filter unit 45 to the electric blower 8.

  The second filtration filter unit 45 filters the air flowing into the exhaust air passage 82 from the opening 42 a of the lid wall 42. The second filtration filter unit 45 is a fine particle-shaped fine particle that passes through the first filtration filter unit 37 during a period when the swirling flow F in the separation chamber 51 is not sufficiently developed, such as immediately after the electric blower 8 is started or stopped. Dust is collected to prevent fine particulate fine dust from reaching the electric blower 8. The second filtration filter unit 45 is a pleated filter that has a disk shape and has alternately folded mountain folds and valley folds extending radially from the center side.

  The first filtration filter unit 37, the isolation unit 38, the return filtration filter unit 39, and the rotation support unit 41 are integrated with the lid wall 42 and the discharge pipe 43, and are taken out through the open end 47 of the container body 35, and again. It can be stored in the container body 35.

  FIG. 3 is a perspective view showing a first filtration filter portion of the electric vacuum cleaner according to the present invention.

  As shown in FIG. 3, the dust separating and collecting apparatus 7 according to the present embodiment includes a blade plate 83 that is provided in the first filtration filter unit 37 and receives a flow of air that swirls in the separation chamber 51.

  The blade 83 is provided on the inner peripheral side of the first filtration filter portion 37 and extends toward the center line of the first filtration filter portion 37, that is, the center line C of the container body 35. The wing plate 83 is integrated with the shape retaining frame 53. In other words, the shape retaining frame 53 also serves as the wing plate 83. The wing plate 83 receives the air that passes through the first filtration filter 55 and flows into the first filtration filter unit 37, and converts it into the rotational force of the first filtration filter unit 37.

  Next, the operation of the vacuum cleaner 1 according to the present invention will be described.

  Here, first, for comparison, a conventional vacuum cleaner 104 including the first filtration filter unit 102 that is fixed to the container body 101 and does not rotate will be described.

  4 (a), 4 (b), and 4 (c) are cross-sectional views schematically showing a dust separating and collecting apparatus of a conventional vacuum cleaner.

  FIG. 5 is a longitudinal sectional view schematically showing a dust separating and collecting device of a conventional vacuum cleaner.

  As shown in FIG. 4 (a), in the conventional vacuum cleaner 104, long fibrous dust fi exceeding the outer peripheral length of the first filtration filter unit 102 flows into the dust separation dust collector 105 by the swirling flow F. In some cases, one end of the dust fi adheres so as to pierce the filter 106. And in the conventional vacuum cleaner 104, since the 1st filtration filter part 102 does not rotate, as shown in FIG.4 (b), as shown in FIG.4 (b), the fibrous dust fi which made the one end part adhere to the filtration filter 106, The filter 106 starts to be wound while being swirled in the swirl flow F.

  Finally, as shown in FIGS. 4C and 5, in the conventional vacuum cleaner 104, fibrous dust fi wraps around the filter 106 and cannot be easily unraveled.

  6 (a), 6 (b), 6 (c), and 6 (d) are cross-sectional views schematically showing a dust separating and collecting apparatus for a vacuum cleaner according to the present invention.

  FIG. 7 is a longitudinal sectional view schematically showing a dust separating and collecting apparatus for a vacuum cleaner according to the present invention.

  As shown in FIG. 6A, in the vacuum cleaner 1 according to the present embodiment as well, a long fibrous dust fi exceeding the outer peripheral length of the first filtration filter unit 37 is swirled in the dust separating dust collecting device 7. When flowing in by F, one end of the dust fi may stick to the first filtration filter 55 in some cases.

  As shown in FIG. 6B, even in the vacuum cleaner 1, the fibrous dust fi having one end attached to the first filtration filter 55 is kept flowing in the swirling flow F, and the first filtration filter is used. Wrap around 55. However, in the vacuum cleaner 1, since the 1st filtration filter part 37 rotates accompanying the swirl | flow flow F (solid line arrow R in FIG. 6), it rotates with the fibrous dust fi to which the 1st filtration filter 55 adhered. As a result, the relative speed difference between the dust fi flowing in the swirl flow F and the first filtration filter 55 is smaller than that of the conventional vacuum cleaner 104, and the dust fi is wound around the first filtration filter 55. Will flow in the separation chamber 51 for a longer time and longer distance.

  While the rotation of the dust fi and the first filtration filter unit 37 continues, a slight disturbance or the like of the swirl flow F is started, and as shown in FIG. 6C, one end of the dust fi Detaches from the first filter 55 or drops off. The vacuum cleaner 1 according to this embodiment has a smaller relative speed difference between the dust fi and the first filtration filter 55 than the conventional vacuum cleaner 104, and the dust fi wraps around the first filtration filter 55. There is room for longer distances and longer distances. For this reason, in the vacuum cleaner 1, it becomes possible to encounter many times by a slight disturbance of the swirling flow F, and the opportunity for the dust fi to leave or drop off from the first filtration filter 55 is considerably increased. .

  Finally, as shown in FIG. 6 (d), the fibrous dust fi is detached from the first filtration filter 55 and dropped, and is accumulated in the dust collecting chamber 52 as shown in FIG.

  By the way, the swirling flow F joins the new dust-containing air flowing into the separation chamber 51 from the suction pipe 36 every time it makes one round, and in the direction of the center line C of the container body 35, in other words, the direction approaching the first filtration filter 55. Change the wind direction. A part of the swirl flow F whose air direction is changed passes through the first filtration filter 55 and is guided to the outside of the dust separation and dust collecting device 7.

  In this process, since the conventional vacuum cleaner 104 includes the non-rotating filtration filter 106, a part of the swirling flow F whose air direction is changed continues to pass through a substantially fixed position of the filtration filter 106. Then, dust gradually adheres to the corresponding part of the filter 106 and eventually becomes clogged. If clogging occurs at a certain location of the filter 106, the flow velocity at the clogged location is reduced, the range is expanded, and finally clogging of the entire filter 106 is induced.

  On the other hand, in the vacuum cleaner 1 according to the present embodiment, since the first filtration filter 55 is rotated along with the swirling flow F, a part of the swirling flow F whose air direction has changed changes the home position of the first filtering filter 55. Without passing continuously, the passing points are widely dispersed over the entire circumference. Therefore, the vacuum cleaner 1 is less likely to be clogged in a narrow range of the first filtration filter 55, easily maintains air permeability, and thus easily maintains the air permeability of the entire first filter 55.

  Thus, since the vacuum cleaner 1 which concerns on this embodiment is provided with the 1st filtration filter part 37 which can rotate in the container main body 35, the dust which turns in the separation chamber 51, especially fibrous dust are 1st. It prevents winding around the filter part 37. In particular, the vacuum cleaner 1 narrows down the part rotated by the swirling flow F to the first filtration filter unit 37, thereby easily obtaining the rotation speed of the first filtration filter unit 37. The relative speed difference is greatly reduced to prevent the fibrous dust from being wound around the first filtration filter portion 37. And the vacuum cleaner 1 narrows down the site | part rotated by the swirl | flow flow F to the 1st filtration filter part 37, and when the vacuum cleaner 1 starts, rotation of the 1st filtration filter part 37 and swirl | flow F The relative speed difference of the first filtration filter part 37 with respect to the swirling flow F is greatly reduced even during a start-up transition, and fibrous dust is prevented from being wound around the first filtration filter part 37. .

  Moreover, since the vacuum cleaner 1 which concerns on this embodiment rotates the 1st filtration filter part 37 with the swirling flow F which arises in the container main body 35, it synchronizes with members, such as an additional prime mover, and the flow velocity of the swirling flow F. This eliminates the need for a measuring instrument and a control system for reducing the number of parts, and ensures reliability.

  Furthermore, since the vacuum cleaner 1 according to this embodiment includes the blade 83 in the first filtration filter unit 37, the driving torque of the first filtration filter unit 37 is increased, and the swirling flow F and the first filtration filter unit 37 are increased. , And the rotation of the isolator 38 can be easily synchronized.

  Furthermore, since the vacuum cleaner 1 according to the present embodiment includes the shape retaining frame 53 that also serves as the wing plate 83, no additional work is required for assembling the first filtration filter unit 37.

  Moreover, since the vacuum cleaner 1 which concerns on this embodiment is equipped with the blade 83 on the inner peripheral side of the 1st filtration filter part 37, it is flow velocity to the outer peripheral surface of the 1st filtration filter 55, ie, the surface exposed to the swirl | vortex flow F. Therefore, it is possible to avoid the dust from adhering to the first filtration filter 55.

  Furthermore, since the vacuum cleaner 1 according to the present embodiment includes the resistor 75 in the dust collection chamber 52, the dust accumulation efficiency in the dust collection chamber 52 is increased, and a larger amount of dust is less likely to be collected in a lump. This makes it easy to dispose of and clean up.

  Therefore, according to the vacuum cleaner 1 according to the present embodiment, it is possible to propose the vacuum cleaner 1 in which fibrous dust is unlikely to wrap around the cylindrical first filtration filter 55 inside the cylindrical container body 35.

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

  Although several embodiments of the present invention have been described, these embodiments are presented by way of example and are not intended to limit the scope of the 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.

DESCRIPTION OF SYMBOLS 1 Electric vacuum cleaner 2 Vacuum cleaner main body 3 Pipe part 5 Main body case 6 Wheel 7 Dust separation dust collector 8 Electric blower 9 Main body control part 11 Power supply cord 12 Main body connection port 14 Plug 19 Connection pipe 21 Dust collection hose 22 Hand operation Pipe 23 Grasping part 24 Operation part 24a Stop switch 24b Start switch 25 Extension pipe 26 Suction port body 28 Suction port 29 Rotating cleaning body 31 Electric motor 35 Container body 35a Side wall 36 Suction pipe 37 First filtration filter part 37a Bottom wall 38 Isolation part 39 Return filtration filter unit 41 Rotation support unit 42 Lid wall 42a Opening 43 Discharge pipe 45 Second filtration filter unit 47 Open end 48 Closed end 51 Separation chamber 52 Dust collection chamber 53 Shape retention frame 55 First filtration filter 56 Frame member 57 Frame member 58 Openings 59, 61, 62 Clearance 63 Side Wall 65 First Axis Core Holding Part 66 Second Axis Core Holding Part 67 Axle Core Part 68 First Bearing 69 First Bearing 71 Aggregate 72 First shaft half part 73 Second shaft half part 75 Resistor 76 First bearing holding part 77 Second bearing holding part 78 Aggregate 79 Stepped fitting part 81 Seal part 82 Exhaust air passage 83 Wing plate 101 Container body 102 First filtration filter unit 103 Separation unit 104 Vacuum cleaner 105 Dust separation and dust collecting device 106 Filtration filter

Claims (4)

A cylindrical container body;
A filtration filter section that has a cylindrical shape shorter than the container body and is housed in the container body and partitions an annular separation chamber between the container body;
Separating the separation chamber and the dust collection chamber adjacent to each other and adjacent to one end of the filtration filter portion, the outer diameter shape being larger than the filtration filter portion and smaller than the container body, and the container body An isolator fixed non-rotating against
A rotation support section that rotatably supports the filtration filter section with respect to the container body and the isolation section with the center line of the container body as a rotation axis;
The filtration filter section includes a cylindrical shape retaining frame having an opening on a side surface , and a filtration filter provided so as to surround the shape retaining frame in a cylindrical shape, and provides a flow of air swirling the separation chamber. Receive and rotate ,
Electric vacuum cleaner. The vacuum cleaner according to claim 1, further comprising a blade plate provided on an inner peripheral side of the filtration filter unit and receiving a flow of air swirling the separation chamber. The vacuum cleaner according to claim 2, wherein the filtration filter unit includes a shape retaining frame that also serves as the blade, and a filtration filter provided in the shape retaining frame. The vacuum cleaner according to any one of claims 1 to 3, further comprising a resistor that is disposed in the dust collection chamber and prevents a swirling air from flowing into the dust collection chamber from the separation chamber to generate a vortex. .

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