JP2019188316A - Dust collector and vacuum cleaner - Google Patents

Abstract

To provide a dust collector having high dust collecting capability and superior maintainability.SOLUTION: A dust collection unit 10 as one example of a dust collector comprises a rotation chamber 20, a partition wall part 31 as one example of a dust collection part and a friction body 30. The rotation chamber 20 rotates dust-containing air and separates dust from the dust-containing air. The partition wall part 31 captures at least a part of dust passing the rotation chamber 20. The friction body 30 is charged by rubbing the partition wall part 31. The friction body 30 scrapes and removes dust captured by rubbing the partition wall part 31 at the partition wall part 31.SELECTED DRAWING: Figure 4

Description

  The present invention relates to a dust collector and a vacuum cleaner.

  Conventionally, there is a cyclone type dust collector. The performance of the cyclone type dust collector for collecting dust is enhanced by the increase of the turning force inside. However, when the turning force inside the dust collector is increased, there is a problem that the pressure loss increases and the force for sucking dust becomes weak. For such a problem, Patent Document 1 describes a dust collector that efficiently collects dust by applying a voltage to the dust and charging the dust to adhere to the wall surface by Coulomb force. Yes.

JP, 2014-188386, A

  In the dust collector described in Patent Literature 1, when the user discards the collected dust, the dust attached to the wall surface may remain on the wall surface. The dust collector described in Patent Document 1 does not have good maintainability.

  The present invention has been made to solve the above-described problems. An object of the present invention is to provide a dust collector that has a high performance for collecting dust and has good maintainability. Moreover, the objective of this invention is providing the vacuum cleaner provided with said dust collector.

A dust collector according to the present invention includes a swirling chamber that swirls dust-containing air to separate the dust from the dust-containing air, a dust collecting portion that collects at least part of the dust that has passed through the swirling chamber, and a dust collecting A friction part that rubs and charges the part, and a dust removal part that removes dust collected in the dust collection part.
Further, the dust collector according to the present invention is a swirling chamber that swirls dust-containing air to separate the dust from the dust-containing air, a dust collecting portion that collects at least a part of the dust that has passed through the swirling chamber, And a friction part that charges the dust collection part and removes the dust collected in the dust collection part by rubbing the dust collection part.
Moreover, the vacuum cleaner which concerns on this invention is equipped with said dust collector and the electric blower which generates an airflow inside a turning chamber.

  ADVANTAGE OF THE INVENTION According to this invention, the performance which collects dust, and the dust collector which has favorable maintainability, and the vacuum cleaner provided with this dust collector are obtained.

It is a perspective view which shows the electric vacuum cleaner of Embodiment 1. FIG. 2 is a perspective view showing a dust collection unit according to Embodiment 1. FIG. 3 is a top view of the dust collection unit of Embodiment 1. FIG. It is sectional drawing of the dust collection unit in the AA position in FIG. It is sectional drawing of the dust collection unit in the BB position in FIG. It is sectional drawing of the dust collection unit in CC position in FIG. It is sectional drawing of the dust collection unit in the DD position in FIG. 2 shows a first modification of the dust collection unit of the first embodiment. 2 shows a first modification of the dust collection unit of the first embodiment. It is a perspective view which shows the 2nd modification of the dust collection unit of Embodiment 1. FIG. 8 is a top view showing a second modification of the dust collection unit of the first embodiment. It is sectional drawing of the dust collection unit in the FF position in FIG. It is sectional drawing of the dust collection unit in the GG position in FIG. It is sectional drawing of the dust collection unit in the HH position in FIG. 6 is a perspective view showing a dust collection unit according to Embodiment 2. FIG. 6 is a top view of a dust collection unit according to Embodiment 2. FIG. It is sectional drawing of the dust collection unit in the II position in FIG. It is sectional drawing of the dust collection unit in the JJ position in FIG. It is sectional drawing of the dust collection unit in the KK position in FIG. It is sectional drawing of the dust collection unit in the LL position in FIG.

  DESCRIPTION OF EMBODIMENTS Hereinafter, embodiments for carrying out the present invention will be described with reference to the accompanying drawings. The same reference numerals in the drawings indicate the same or corresponding parts. Further, in the present disclosure, overlapping descriptions will be simplified or omitted as appropriate. It should be noted that the present invention can include all modifications and combinations of configurations disclosed by the following embodiments without departing from the spirit of the present invention.

Embodiment 1 FIG.
FIG. 1 is a perspective view showing a vacuum cleaner 1 according to the first embodiment. FIG. 1 shows a canister type vacuum cleaner 1 as an example. First, with reference to FIG. 1, the outline of the structure of the vacuum cleaner 1 of Embodiment 1 is demonstrated.

  As shown in FIG. 1, the vacuum cleaner 1 includes, for example, a suction tool 2, a suction pipe 3, a connection pipe 4, a suction hose 5, and a main unit 6. Further, the main body unit 6 is provided with a dust collection unit 10 in a detachable manner. As an example, the dust collection unit 10 is disposed in the front part of the main unit 6.

  In the present disclosure, items to be cleaned such as dust, dust, dust, hair, and fibers are collectively referred to as “dust”. In the present disclosure, the air containing the “dust” is referred to as “dust-containing air”. The dust collection unit 10 is an example of a dust collector that separates dust from dust-containing air and collects the dust. Hereinafter, the air from which the dust is separated by the dust collecting unit 10 which is an example of the dust collecting device is also referred to as “clean air”.

  The suction tool 2 is for sucking dust-containing air. An opening for sucking dust-containing air is formed on the lower surface of the suction tool 2. One end of a suction pipe 3 is connected to the suction tool 2. The suction pipe 3 is, for example, a cylindrical member that extends linearly. The opening formed in the lower surface of the suction tool 2 communicates with the inside of the suction pipe 3 through the inside of the suction tool 2. In addition, the suction tool 2 is formed so that attachment or detachment with respect to the suction pipe 3 is an example.

  The other end of the suction pipe 3 is connected to one end of the connection pipe 4. The connection pipe 4 is, for example, a bent cylindrical member. The inside of the suction pipe 3 communicates with the inside of the connection pipe 4. The other end of the connection pipe 4 is connected to one end of the suction hose 5. The suction hose 5 is, for example, a flexible bellows-like cylindrical member. The cross-sectional shape of the suction hose 5 is, for example, a rectangular shape. The inside of the connection pipe 4 communicates with the inside of the suction hose 5.

  The other end of the suction hose 5 is connected to a main body suction port 7 formed on the front surface portion of the main body unit 6. The main body suction port 7 is for allowing dust-containing air to flow into the main body unit 6. The inside of the suction hose 5 leads to the inside of the main unit 6 through the main body suction port 7.

  As described above, the suction tool 2 is connected to the main unit 6 by the suction pipe 3, the connection pipe 4, and the suction hose 5. Inside the suction tool 2, the suction pipe 3, the connection pipe 4, and the suction hose 5, an air path that leads from the opening formed on the lower surface of the suction tool 2 to the main body suction port 7 is formed.

  As described above, the main body unit 6 is provided with the dust collection unit 10 which is an example of a dust collector. FIG. 2 is a perspective view showing the dust collection unit 10 of the first embodiment. As shown in FIG. 2, the overall outline of the dust collection unit 10 is a cylindrical shape. A unit inlet 11 and a unit outlet 12 are formed in the dust collection unit 10.

  The unit inlet 11 is an opening through which dust-containing air flows into the dust collection unit 10. The unit outlet 12 is an opening for allowing clean air to flow from the inside of the dust collection unit 10 to the outside. The inside and the outside of the dust collection unit 10 communicate with each other through the unit inlet 11. Further, the inside and the outside of the dust collection unit 10 communicate with each other through the unit outlet 12.

  The unit inlet 11 of the dust collection unit 10 attached to the main unit 6 communicates with the main body suction port 7. The main body unit 6 has an exhaust port (not shown). The inside and outside of the main unit 6 communicate with each other through this exhaust port. An exhaust air path from the unit outlet 12 of the dust collection unit 10 to the exhaust port is formed inside the main body unit 6. That is, the exhaust air passage is formed so as to extend from the dust collection unit 10 to the outside of the main unit 6.

  The connection pipe 4 is provided with a handle 8 as an example. The handle 8 is a member that is gripped by the user of the vacuum cleaner 1. An operation switch 9 is provided on the front surface of the handle 8. The user can control the operation of the vacuum cleaner 1 by operating the operation switch 9.

  Further, the main body unit 6 incorporates an electric blower (not shown). The electric blower is a device for generating an airflow in an air passage formed inside each part constituting the vacuum cleaner 1. Further, the main unit 6 is provided with a power cord for supplying power to the electric blower, a cord reel portion around which the power cord is wound, a circuit board for controlling the operation of the vacuum cleaner 1, and the like. The illustration of the power cord, the cord reel portion, and the circuit board is omitted in the present disclosure.

  Here, the basic operation of the electric vacuum cleaner 1 configured as described above will be briefly described. The electric blower built in the main unit 6 performs a preset operation in response to an operation on the operation switch 9 by the user. When the electric blower operates, an air flow is generated in the air passage formed in the vacuum cleaner 1. Thereby, dust is sucked together with air from the opening formed in the lower surface of the suction tool 2. That is, dust-containing air is sucked into the suction tool 2.

  Dust-containing air sucked from the opening formed on the lower surface of the suction tool 2 is sucked from the main body suction port 7 to the main body unit 6 through the suction tool 2, the suction pipe 3, the connection pipe 4 and the suction hose 5 in this order. Is done. The dust-containing air sucked into the main body unit 6 from the main body suction port 7 flows into the dust collection unit 10 from the unit inlet 11. The dust collection unit 10 rotates dust-containing air inside and separates the dust by centrifugal force. The dust collection unit 10 is a cyclone separation device having a cyclone separation function. The dust collection unit 10 collects the separated dust. The dust collection unit 10 temporarily collects the collected dust.

  The dust-containing air sucked into the main unit 6 is separated into clean air and dust through the dust collection unit 10. As described above, dust is collected in the dust collection unit 10. The clean air flows out from the unit outlet 12. The clean air that has flowed out of the unit outlet 12 flows into an exhaust air passage formed inside the main unit 6. The clean air that has flowed into the exhaust air passage is discharged to the outside through an exhaust port formed in the main unit 6. The vacuum cleaner 1 including the dust collection unit 10 which is an example of a dust collector separates dust from dust-containing air as described above, and discharges clean air from which dust has been removed.

  Next, the structure and function of the dust collection unit 10 which is an example of the dust collector will be described in more detail with reference to the drawings. FIG. 3 is a top view of the dust collection unit 10 of the first embodiment. FIG. 4 is a cross-sectional view of the dust collection unit at the AA position in FIG. 3. FIG. 5 is a cross-sectional view of the dust collection unit at the BB position in FIG. 4. FIG. 6 is a cross-sectional view of the dust collection unit at the CC position in FIG. 4. FIG. 7 is a cross-sectional view of the dust collection unit at the DD position in FIG. 4. Hereinafter, the dust collection unit 10 of Embodiment 1 will be described with reference to FIGS. 2 to 7. In the following description regarding the dust collection unit 10, each direction is specified on the basis of the orientation on the paper surface in FIG.

  The dust collection unit 10 of this embodiment includes a swirl chamber 20, an inflow pipe 13, and a discharge pipe 16. The swirl chamber 20 swirls dust-containing air along the side wall. The swirl chamber 20 separates dust from the dust-containing air by swirling the dust-containing air. The inflow pipe 13 is a member for allowing dust-containing air to flow into the swirl chamber 20. The discharge pipe 16 is a member for causing the air in the swirl chamber 20 to flow out of the swirl chamber 20.

  The swirl chamber 20 is formed by a cylindrical portion 20a and a conical portion 20b. The cylindrical portion 20 a and the conical portion 20 b are members that serve as side walls of the swirl chamber 20. The cylindrical portion 20a has a hollow cylindrical shape. The cylindrical portion 20a is arranged so that the central axis faces the up-down direction. The conical portion 20b has a hollow conical shape with a tip portion cut off. The conical portion 20b is arranged so that the central axis faces the up-down direction. In the present embodiment, the central axis of the cylindrical portion 20a and the central axis of the conical portion 20b are aligned on the same straight line.

  The upper end portion of the conical portion 20b is connected to the lower end portion of the cylindrical portion 20a. The diameter of the conical portion 20b decreases as it goes downward from the upper end portion. An opening facing downward is formed at the lower end of the conical portion 20b.

  The space inside the cylindrical portion 20a and the space inside the conical portion 20b form a continuous space. In the present embodiment, the continuous space and the portion forming the space are referred to as a swirl chamber 20. The upper part of the swirl chamber 20 is formed by a cylindrical part 20a. The lower part of the swirl chamber 20 is formed by a conical part 20b. The central axis of the swirl chamber 20 faces in the vertical direction. In the present embodiment, the side wall of the swirl chamber 20 has a circular cross section perpendicular to the central axis of the swirl chamber 20.

  One end of the inflow pipe 13 faces the outside of the dust collection unit 10. A unit inlet 11 is formed at one end of the inflow pipe 13. The other end of the inflow pipe 13 is connected to the upper part of the cylindrical portion 20a. The other end of the inflow pipe 13 is connected to the cylindrical portion 20 a so that the dust-containing air flows into the swirl chamber 20 from the tangential direction of the swirl chamber 20. For example, the axis of the inflow pipe 13 is perpendicular to the central axis of the cylindrical portion 20a. An inflow port 14 is formed at the other end of the inflow pipe 13, that is, at the upper part of the cylindrical portion 20a. The inlet 14 is an opening through which the dust-containing air that has passed through the unit inlet 11 and the inside of the inlet pipe 13 is taken into the swirl chamber 20.

  The discharge pipe 16 is provided so as to protrude from the upper surface of the dust collection unit 10 into the swirl chamber 20 inside the dust collection unit 10. The upper end side of the discharge pipe 16 communicates with the unit outlet 12. The discharge pipe 16 is provided so as to be located in the center of the swirl chamber 20 in plan view.

  The upper part of the discharge pipe 16 has a hollow cylindrical shape. The lower part of the discharge pipe 16 has a hollow conical shape whose diameter decreases as it goes downward. As an example, the central axis of the discharge pipe 16 and the central axis of the cylindrical portion 20a are aligned on the same straight line.

  A discharge port 15 is formed in the wall surface of the discharge pipe 16. The inside of the swirl chamber 20 and the inside of the discharge pipe 16 communicate with each other through this discharge port 15. The discharge port 15 is an opening for allowing the air in the swirl chamber 20 to flow out of the swirl chamber 20. The inside of the swirl chamber 20 and the unit outlet 12 communicate with each other through the inside of the discharge port 15 and the discharge pipe 16. For example, the discharge port 15 is formed by a large number of fine holes.

  A primary opening 21 is formed in the side wall of the swirl chamber 20. The primary opening 21 is formed, for example, from the lower end portion of the cylindrical portion 20a to the upper end portion of the conical portion 20b. A primary dust collection chamber 22 that communicates with the swirl chamber 20 through the primary opening 21 is formed around the swirl chamber 20. Moreover, as described above, an opening facing downward is formed at the lower end of the conical portion 20b. In the present embodiment, this opening formed at the lower end of the conical portion 20b is referred to as a secondary opening 23. A secondary dust collection chamber 24 that communicates with the swirl chamber 20 through the secondary opening 23 is formed below the swirl chamber 20.

  The primary dust collection chamber 22 and the secondary dust collection chamber 24 are examples of a dust collection chamber. The dust collection chamber is a space that collects at least a part of the dust separated in the swirl chamber 20. Garbage α is stored in the primary dust collection chamber 22. Garbage β is stored in the secondary dust collection chamber 24. The waste α is relatively bulky dust such as fiber waste and hair. The garbage [beta] is relatively small dust such as sand and fine fiber. The primary dust collection chamber 22 is an example of a first dust collection chamber that collects first dust. The secondary dust collection chamber 24 is an example of a second dust collection chamber that collects second dust that is smaller than the first dust.

  In the present embodiment, the primary opening 21 is formed at a position lower than the inflow port 14. The primary opening 21 is formed on the downstream side of the inflow port 14. The primary opening 21 is formed at a position higher than the secondary opening 23. The primary opening 21 is formed on the upstream side of the secondary opening 23. As an example, the lower end of the discharge pipe 16 is disposed below the lower end of the primary opening 21.

  The dust collection unit 10 of the present embodiment includes a dust collection container 40. The dust collecting container 40 is a bottomed container-like member that is open at the top. The dust collecting container 40 is a member for collecting and storing dust. The dust collection container 40 is detachably formed. The primary dust collection chamber 22 and the secondary dust collection chamber 24 which are examples of the dust collection chamber are formed inside the dust collection container 40.

  The dust collection container 40 includes a bottom 41 and an outer wall 42. The overall shape of the bottom 41 is, for example, a circular shape. The outer wall portion 42 has, for example, a cylindrical shape. The outer wall portion 42 is provided so as to stand upright from the edge of the bottom portion 41. The bottom portion 41 and the outer wall portion 42 form a cylindrical dust collecting container 40 that is open at the top and closed at the bottom. The diameter of the outer wall part 42 is larger than the diameter of the cylindrical part 20a. The cylindrical portion 20 a and the conical portion 20 b that form the swirl chamber 20 are located inside the dust collection container 40.

  Further, the upper end portion of the partition wall portion 31 is connected to the outer peripheral surface of the conical portion 20 b forming the swirl chamber 20. The partition wall 31 is a cylindrical member. As an example, the central axis of the partition wall portion 31 coincides with the central axis of the conical portion 20b. In the present embodiment, the diameter of the partition wall portion 31 is smaller than the diameter of the cylindrical portion 20a. The conical part 20b and the partition part 31 are arranged so that the lower end of the conical part 20b is inserted into the space inside the partition part 31 from above.

  The partition wall portion 31 is disposed inside the outer wall portion 42 of the dust collection container 40. In the dust collection container 40, two spaces separated by the partition wall 31 are formed separately from the swirl chamber 20. Of these two spaces, the space formed outside the swirl chamber 20 and the partition wall 31 is the primary dust collection chamber 22. Of these two spaces, the space formed below the conical portion 20 b and inside the partition wall portion 31 is the secondary dust collection chamber 24.

  The secondary dust collection chamber 24 is a space excluding the space formed inside the conical portion 20 b among the spaces formed inside the partition wall portion 31. The secondary dust collection chamber 24 is formed so as to cover the lower portion of the conical portion 20b. The secondary dust collection chamber 24 is formed so as to surround the lower end of the conical portion 20b. In the present embodiment, the partition wall 31 forms the side wall of the secondary dust collection chamber 24.

  The primary dust collection chamber 22 is a space excluding the swirl chamber 20 and the secondary dust collection chamber 24 among the spaces formed inside the outer wall portion 42 of the dust collection container 40. The majority of the swirl chamber 20 is surrounded by the primary dust collection chamber 22. The primary dust collection chamber 22 also surrounds the secondary dust collection chamber 24.

  The partition wall part 31, the cylindrical part 20 a and the conical part 20 b form the inner wall of the primary dust collection chamber 22. The outer wall portion 42 forms the outer wall of the primary dust collection chamber 22. That is, the partition wall portion 31, the cylindrical portion 20 a, the conical portion 20 b, and the outer wall portion 42 form a wall surface that surrounds the primary dust collection chamber 22. The partition part 31, the cylindrical part 20a, the conical part 20b, and the outer wall part 42 in this Embodiment are examples of the wall surface surrounding a dust collection chamber.

  At least a part of the waste β flowing into the secondary dust collection chamber 24 is collected by static electricity on the inner surface of the partition wall 31 that is the side wall of the secondary dust collection chamber 24. The partition wall 31 according to the present embodiment is an example of a dust collection unit that collects at least a part of the dust that has passed through the swirl chamber 20.

  Moreover, the dust collection unit 10 which is an example of a dust collector is provided with the friction body 30 which frictions the inner surface of the partition part 31 which is an example of a dust collection part. The friction body 30 rubs and charges the partition wall 31. The friction body 30 also scrapes off dust collected on the inner surface by rubbing the inner surface of the partition wall 31. The friction body 30 in the present embodiment is an example of a friction dust removing unit that charges the dust collecting unit by rubbing the dust collecting unit and removes dust collected in the dust collecting unit. The friction body 30 is disposed at a position in contact with the inner surface of the partition wall portion 31.

  For example, the friction body 30 is moved by a drive unit (not shown). The drive unit is an electrically moving device. The friction body 30 may be manually moved by the user. In the present embodiment, the friction body 30 rotates about the central axis of the secondary dust collection chamber 24 as a rotation axis. The friction body 30 rotates along a partition wall portion 31 that is an example of a dust collection portion. The friction body 30 moves along the circumferential direction of the cylindrical partition wall 31.

  The partition part 31 which is an example of a dust collection part is formed with a material with low electroconductivity, for example. The partition wall 31 is made of, for example, a material that is negatively charged when rubbed by the friction body 30. The material that is negatively charged and has low conductivity when rubbed by the friction body 30 is, for example, polypropylene. In general, most of the dust is positively charged. The partition wall portion 31 can efficiently collect the positively charged dust by being negatively charged.

  Some dust is negatively charged. The partition wall 31 may be configured to be positively charged when rubbed by the friction body 30. The partition wall 31 may be configured such that only a part, not the whole, is charged when rubbed by the friction body 30. That is, a part of the partition wall 31 may be an example of a dust collecting unit.

  Next, the function of the dust collection unit 10 configured as described above will be described more specifically. When the electric blower built in the main unit 6 starts operating, the dust-containing air is sucked into the suction tool 2 as described above. The dust-containing air sucked into the suction tool 2 passes through the suction pipe 3, the connection pipe 4, the suction hose 5, and the main body suction port 7 and flows into the dust collection unit 10 from the unit inlet 11.

  The dust-containing air flowing in from the unit inlet 11 flows into the swirl chamber 20 along the inner peripheral surface of the cylindrical portion 20a, that is, along the side wall of the swirl chamber 20. The dust-containing air flows into the swirl chamber 20 from the tangential direction of the swirl chamber 20.

  The dust-containing air flowing into the swirl chamber 20 swirls along the side wall that forms the swirl chamber 20. In the present embodiment, the dust-containing air turns along the inner peripheral surface of the cylindrical portion 20a. The dust-containing air forms a swirling airflow in the swirling chamber 20. The swirling airflow in the swirling chamber 20 flows downward while forming a forced vortex region near the central axis and an outer free vortex region.

  Centrifugal force acts on the dust contained in the swirling airflow in the swirling chamber 20. For example, the relatively bulky garbage α falls in the swirl chamber 20 while being pressed against the inner peripheral surface of the cylindrical portion 20a by centrifugal force. When the garbage α reaches the height of the primary opening 21, it is separated from the swirling airflow and passes through the primary opening 21. The waste α passes through the primary opening 21 and is sent to the primary dust collection chamber 22.

  The garbage α that has entered the primary dust collection chamber 22 from the primary opening 21 falls in the primary dust collection chamber 22 while moving in the same direction as the swirl direction of the airflow in the swirl chamber 20. The garbage α reaches the bottom of the primary dust collection chamber 22 and is collected. Part of the garbage α may be collected by static electricity or the like on the partition wall portion 31, the cylindrical portion 20 a, the conical portion 20 b, the outer wall portion 42, and the like that form the wall surface surrounding the primary dust collection chamber 22.

  Dust that has not flowed into the primary dust collection chamber 22 from the primary opening 21 moves downward while swirling on the airflow in the swirl chamber 20. The relatively small dust β that has not entered the primary dust collection chamber 22 passes through the secondary opening 23. Garbage β that has passed through the secondary opening 23 flows into the secondary dust collecting chamber 24 and is collected.

  In addition, at least a part of the garbage β flowing into the secondary dust collection chamber 24 is collected by being attached to the partition wall 31 which is an example of the dust collection unit by static electricity. For example, the partition wall 31 that is an example of the dust collection unit is rubbed by the friction body 30 in advance before the electric blower built in the main unit 6 starts its operation. Thereby, the partition part 31 will be in the state electrically charged previously. In the present embodiment, dust β is efficiently collected by the charged partition wall 31.

  When the swirling airflow in the swirl chamber 20 reaches the lowermost part of the swirl chamber 20, the traveling direction is changed upward. The swirling airflow whose traveling direction is changed upward is raised along the central axis of the swirling chamber 20. Garbage α and dust β are removed from the air forming the updraft. The clean air from which the waste α and the waste β have been removed is discharged out of the swirl chamber 20 from the discharge port 15. The clean air that has passed through the discharge port 15 passes through the discharge pipe 16 and the unit outlet 12 and is sent to the exhaust air passage inside the main unit 6. The clean air that has flowed into the exhaust air passage is discharged to the outside through an exhaust port formed in the main unit 6.

  As described above, the operation of the electric blower causes the waste α to accumulate in the primary dust collection chamber 22. In addition, the garbage β accumulates in the secondary dust collection chamber 24. In the present embodiment, the friction body 30 operates again after the electric blower ends its operation. Thereby, the waste β adhering to the partition wall 31 is scraped off. The dust β thus scraped off is collected at the bottom of the secondary dust collection chamber 24. After the dust β is removed by the friction body 30, the user removes the dust collection unit 10 from the main unit 6 and further removes the dust collection container 40, whereby the primary dust collection chamber 22 and the secondary dust collection chamber 24 are removed. The accumulated dust can be discarded.

  As described above, the dust collection unit 10 of the present embodiment and the friction body 30 which is an example of the friction portion are provided. The partition wall 31, which is an example of a dust collection unit, is charged by being rubbed by the friction body 30. Dust adheres to the charged partition wall 31 due to static electricity. In the present embodiment, dust is efficiently collected by the partition wall portion 31. Further, the dust adhering to the charged partition wall 31 due to static electricity does not return to the swirl chamber 20. Thus, according to the present embodiment, a dust collection unit 10 having a high performance for collecting dust and a vacuum cleaner including the dust collection unit 10 are obtained.

  The friction body 30 removes the dust β adhering to the partition wall 31 before the user discards the dust. According to the present embodiment, when the user discards the dust, it is prevented that the dust attached to the partition wall portion 31 which is an example of the dust collecting portion remains without being peeled off. Thus, according to this embodiment, a dust collection unit 10 with good maintainability and a vacuum cleaner including the dust collection unit 10 are obtained.

  The timing at which the friction body 30 operates is not limited to this example. For example, the friction body 30 may start operation simultaneously with the electric blower. The friction body 30 may continue to operate while the electric blower is operating. Thereby, the removal of the dust adhering to the partition wall part 31 and the charging of the partition wall part 31 are continuously performed. By continuously operating the friction body 30, the partition wall 31 is held in a charged state for a long time, and the partition wall 31 can collect dust more efficiently.

  Further, the dust β adhering to the partition wall portion 31 is scraped together by the friction body 30 to be agglomerated and collected at the bottom of the secondary dust collecting chamber 24. Garbage β collected as agglomerated lump at the bottom of the secondary dust collection chamber 24 does not return to the swirl chamber 20 while the electric blower is operating.

  The friction body 30 may be formed of, for example, a material having higher conductivity than the insulator, in other words, a material having conductivity. In particular, it is better that the friction body 30 is made of a material having a low electrical resistivity and high conductivity. Examples of the material having a small electric resistivity and high conductivity include a resin material containing a carbon material and a metal having a volume resistivity of less than 1 (Ω · m).

  The friction body 30 formed of a conductive material is electrically connected to a conductive member having a large electrostatic capacity and volume or a power source for grounding the friction body 30 through a conductive wire or the like. Thereby, the electric charge which accumulated in the friction body 30 by rubbing the partition part 31 is discharge | released outside. The conductive member, the power source, and the like are examples of charge discharging means for discharging charges from the friction body 30.

  By rubbing the partition wall portion 31, the charge accumulated in the friction body 30 is released to the outside, so that charging of the friction body 30 is prevented. Thereby, the friction body 30 can efficiently charge the partition wall 31 when the partition wall 31 is rubbed again. Further, by preventing the friction body 30 from being charged, the adhesion of dust to the friction body 30 is suppressed. Thereby, the friction body 30 can efficiently perform charging of the partition wall portion 31 and removal of dust attached to the partition wall portion 31.

  The friction body 30 is more preferably formed of a soft material. The friction body 30 formed of a soft material moves while being deformed so as to follow the surface of the partition wall portion 31 which is an example of a dust collection portion. Thereby, more of the dust adhering to the partition wall 31 is scraped off.

  Moreover, the dust collection unit 10 which is an example of a dust collector may be equipped with the static elimination means which neutralizes the partition part 31 which is an example of the dust collection part electrically charged by the friction body 30 which is an example of a friction part. . When the partition wall 31 which is an example of the dust collection unit is neutralized, dust attached to the partition wall 31 is easily peeled off.

  The neutralizing means is constituted by, for example, a neutralizing device that discharges electric charges to the partition wall 31. This static eliminator is a device that discharges a charge having a polarity opposite to that of the charge caused by friction of the partition wall 31 by the friction body 30. For example, the static eliminator discharges charges into the secondary dust collection chamber 24. For example, the static eliminator releases electric charges when the friction body 30 scrapes off dust adhering to the partition wall 31. For example, when dust adheres to the negatively charged partition wall 31, the static eliminator operates the friction body 30 and discharges positive charges into the secondary dust collection chamber 24.

  Further, the charge removal means is not limited to a device that discharges electric charges such as the charge removal device described above. The static elimination means may be formed integrally with the friction body 30 that is an example of the friction portion. For example, the friction body 30 may be formed of two or more types of materials, a first material that neutralizes the partition wall 31 and a second material that charges the partition wall 31. Of the friction body 30 formed of two or more kinds of materials, a portion formed of the first material constitutes a static elimination means.

  For example, the front portion in the moving direction of the friction body 30 is formed of a first material that neutralizes the partition wall 31 by friction. Further, the rear portion in the moving direction of the friction body 30 is formed of a second material that charges the partition wall 31 by friction. Thereby, when the friction body 30 is moved, first, the portion formed of the first material removes the charge from the partition wall 31 and scrapes off the dust. Thereafter, the partition part 31 is charged by the portion formed of the second material. For example, a resin material containing a carbon material corresponds to the first material. By forming the static elimination means integrally with the friction body 30 which is an example of the friction portion, the configuration of the dust collection unit 10 becomes simpler and the maintainability of the dust collection unit 10 is improved.

  Further, in the above embodiment, the friction body 30 which is an example of the friction portion performs both charging of the partition wall portion 31 and dust removal. By configuring the dust collection unit 10 so as to perform charging and dust removal with one component, the maintainability of the dust collection unit 10 is improved. Further, when charging the partition wall 31, the friction body 30 is charged to a polarity opposite to that of the partition wall 31, that is, a polarity on the same side as dust in the charging column. For this reason, it becomes difficult for dust to adhere to the friction body 30.

  The dust collection unit 10 may include a dust removing unit that removes dust separately from the friction body 30. That is, a friction part that charges the dust collection part and a dust removal part that removes dust collected by the dust collection part may be provided separately. The dust removing unit that removes the dust collected by the dust collecting unit may rub the dust collecting unit like the friction body 30 or may remove dust by removing the charge from the dust collecting unit. . Moreover, when the friction part and the dust removal part are provided separately, the said friction part may be provided in the exterior of the dust collection chamber, for example.

  Here, a modification of the first embodiment will be described with reference to the drawings. 8 and 9 show a first modification of the dust collection unit 10 of the first embodiment. FIG. 8 corresponds to FIG. 4 and is a cross-sectional view taken along the line AA in FIG. FIG. 9 is a cross-sectional view taken along the line EE in FIG. As shown in FIGS. 8 and 9, the friction body 30 may be formed in an annular shape that matches the shape of the wall surface of the secondary dust collection chamber 24, for example. The friction body 30 may be configured to move up and down.

  10 to 14 show a second modification of the dust collection unit 10 of the first embodiment. FIG. 10 is a perspective view showing a second modification of the dust collection unit 10 of the first embodiment. FIG. 11 is a top view showing a second modification of the dust collection unit 10 of the first embodiment. 12 is a cross-sectional view of the dust collection unit 10 at the FF position in FIG. FIG. 13 is a cross-sectional view of the dust collection unit 10 at the position GG in FIG. 14 is a cross-sectional view of the dust collection unit 10 at the HH position in FIG. In the second modification, the dust collection unit 10 includes a swirl chamber 20, a primary dust collection chamber 22, an inflow pipe 13, a discharge pipe 16, and a dust collection container 40.

  In the second modification, the swirl chamber 20 has a cylindrical shape. An inner wall of the cylindrical swirl chamber 20 is formed by the discharge pipe 16. The outer wall of the cylindrical swirl chamber 20 is formed by the outer wall portion 42 of the dust collecting container 40.

  A primary dust collection chamber 22 communicating with the swirl chamber 20 is formed below the cylindrical swirl chamber 20. In the second modification, both the garbage α and the garbage β are collected in the primary dust collection chamber 22. The wall surface surrounding the primary dust collection chamber 22 is formed by the outer wall portion 42 of the dust collection container 40.

  A partition wall 31 is provided at the lower end of the discharge pipe 16. In the second modified example, the partition wall 31 partitions the lower space in the dust collection container 40 into a swirl chamber 20 and a primary dust collection chamber 22.

  In the second modification, the side wall of the primary dust collection chamber 22, that is, the outer wall portion 42 is the dust collection portion. In the second modification, the friction body 30 is provided so as to contact the outer wall portion 42. The outer wall part 42 which is an example of a dust collection part is formed with a material with low electroconductivity, for example. The outer wall 42 is formed of, for example, a material that is negatively charged when rubbed by the friction body 30. In the second modification, the friction body 30 rubs and charges the outer wall portion 42 that is the side wall of the primary dust collection chamber 22. In addition, the friction body 30 rubs off the dust attached to the outer wall portion 42 by rubbing the outer wall portion 42.

  As shown in the second modified example, the dust collection unit 10 that is an example of the dust collector may include only one of the primary dust collection chamber 22 and the secondary dust collection chamber 24. Good. The dust collection unit 10 may store the waste α and the waste β in the same space.

  The dust collection part that collects at least a part of the dust that has passed through the swirl chamber may be a part other than the partition wall part 31 that forms the wall surface of the secondary dust collection chamber 24. The dust collection part may be the outer wall part 42 that forms the wall surface of the primary dust collection chamber 22 as in the second modification. In addition, the dust collection unit may be any part of the wall surface surrounding the dust collection chamber, such as the cylindrical unit 20a and the conical unit 20b. In addition, the dust collection unit may be a member that forms the bottom surface of the dust collection chamber such as the bottom 41, or may be a member that is separately provided in the dust collection chamber. The friction body 30 which is an example of a friction part should just be comprised so that arbitrary dust collection parts may be rubbed.

  The vacuum cleaner 1 is not limited to a canister type. The vacuum cleaner 1 may be, for example, a cordless type, a stick type, or a self-sustaining operation type. Moreover, the dust collection unit 10 which is an example of a dust collector is applicable also to apparatuses other than the vacuum cleaner 1. FIG.

Embodiment 2. FIG.
Next, a second embodiment will be described. 15 to 20 show the dust collection unit 10a of the second embodiment. Parts that are the same as or equivalent to those in the first embodiment are given the same reference numerals, and descriptions thereof are simplified or omitted. The dust collection unit 10a of the present embodiment is a cyclone separation device having a cyclone separation function, like the dust collection unit 10 of the first embodiment. The dust collection unit 10a is an example of a dust collector, and is provided in the vacuum cleaner 1, for example.

  FIG. 15 is a perspective view showing the dust collection unit 10a of the second embodiment. FIG. 16 is a top view of the dust collection unit 10a of the second embodiment. FIG. 17 is a cross-sectional view of the dust collection unit 10a at the II position in FIG. 18 is a cross-sectional view of the dust collection unit 10a at the JJ position in FIG. FIG. 19 is a cross-sectional view of the dust collection unit 10a at the KK position in FIG. 20 is a cross-sectional view of the dust collection unit 10a at the LL position in FIG. Hereinafter, the dust collection unit 10a according to the second embodiment will be described with reference to FIGS.

  The dust collection unit 10 a includes the inflow pipe 13 and the swirl chamber 20 as in the dust collection unit 10 of the first embodiment. As in the first embodiment, the inflow pipe 13 is provided so that the dust-containing air flows into the swirl chamber 20 from the tangential direction of the swirl chamber 20. A unit inlet 11 is formed in the inflow pipe 13.

  In addition, the dust collection unit 10 a includes a discharge pipe 16 for causing the air in the swirl chamber 20 to flow out of the swirl chamber 20. In the present embodiment, the swirl chamber 20 has a cylindrical shape. The discharge pipe 16 is provided at the center of the swirl chamber 20. As an example, the central axis of the discharge pipe 16 coincides with the central axis of the swirl chamber 20. A discharge port 15, which is an opening facing the swirl chamber 20, is formed at the upstream end of the discharge pipe 16. The downstream end of the discharge pipe 16 opens toward the outside of the swirl chamber 20.

  In the present embodiment, the dust collection unit 10a includes a primary dust collection chamber 22 that collects relatively bulky garbage α. A primary opening 21 is formed in the side wall of the swirl chamber 20. The swirl chamber 20 communicates with the primary dust collection chamber 22 through the primary opening 21.

  In the present embodiment, a secondary dust collection chamber 24 is formed on the downstream side of the swirl chamber 20 and the discharge pipe 16 to collect relatively small dust β. The downstream end of the discharge pipe 16 opens toward the secondary dust collection chamber 24.

  In the present embodiment, a dust collector 32 is disposed in the secondary dust collection chamber 24. That is, the dust collector 32 is provided on the downstream side of the swirl chamber 20. The dust collector 32 is an example of a dust collector that repairs dust contained in the dust-containing air that has passed through the swirl chamber 20.

  The dust collector 32 is a filter-like member in which a plurality of fine holes are formed, for example. The dust collector 32 has, for example, a disk shape. The disc-shaped dust collector 32 is disposed perpendicular to the direction in which the airflow flows into the secondary dust collection chamber 24. The secondary dust collection chamber 24 is provided with a friction body 30 disposed so as to be in contact with the dust collection body 32.

  In the present embodiment, the dust collector 32 is rotated by the rotation drive unit 33. The friction body 30 rubs the dust collection body 32 when the dust collection body 32 rotates. Note that the friction body 30 may rotate as in the first embodiment.

  A unit outlet 12 is formed at the downstream end of the secondary dust collection chamber 24. The unit outlet 12 is an opening for discharging clean air to the outside of the dust collection unit 10a, as in the first embodiment.

  The function of the dust collection unit 10a of the second embodiment configured as described above will be described. As in the first embodiment, the dust-containing air flows from the unit inlet 11 into the dust collection unit 10a. The dust-containing air flowing in from the unit inlet 11 flows into the swirl chamber 20 along the side wall of the swirl chamber 20. The dust-containing air flows into the swirl chamber 20 from the tangential direction of the swirl chamber 20.

  The dust-containing air flowing into the swirl chamber 20 swirls along the side wall forming the swirl chamber 20 to form a swirl airflow. Centrifugal force acts on the dust contained in the swirling airflow in the swirling chamber 20. For example, the relatively bulky garbage α passes through the primary opening 21 by centrifugal force and is sent to the primary dust collection chamber 22. The garbage α falls in the primary dust collection chamber 22 and is collected.

  The relatively small waste β that has not flowed into the primary dust collection chamber 22 from the primary opening 21 passes through the discharge port 15 and the discharge pipe 16 and flows into the secondary dust collection chamber 24. At least a part of the garbage β that has flowed into the secondary dust collection chamber 24 adheres to and is collected by a dust collector 32 that is an example of a dust collection unit.

  A dust collector 32, which is an example of a dust collector, rotates and is rubbed by the friction body 30. As a result, the dust collector 32 is charged. The waste β flowing into the secondary dust collection chamber 24 collides perpendicularly with the disc-shaped dust collector 32. The dust β colliding with the dust collector 32 is collected by the static dust collector 32 by static electricity.

  Further, the dust collected by the dust collector 32 is scraped off by the friction body 30 as the dust collector 32 rotates. The waste β scraped off by the friction body 30 falls to the bottom of the secondary dust collection chamber 24 and is stored in the secondary dust collection chamber 24. The clean air that has passed through the dust collector 32 passes through the unit outlet 12 and is discharged to the outside of the dust collection unit 10a.

  According to the configuration of the second embodiment described above, as in the first embodiment, a dust collection unit 10a having high performance for collecting dust and good maintainability can be obtained. In the second embodiment, the dust β is collected by the electrostatic force in the dust collector 32 charged by the friction body 30. According to the second embodiment, the pressure loss inside the dust collecting unit 10a can be reduced as compared with the case where the dust β is separated by the turning force.

  In each of the above-described embodiments, the shape of each member is mentioned, but these do not mean a literal complete shape. For example, the circular member may not be a complete circular member. The cylindrical member may not be a complete cylindrical member. For example, the surface of the cylindrical member may include irregularities for connection with other members. Also, a part of the surface of each member may be formed flat for connection with other members.

  DESCRIPTION OF SYMBOLS 1 Vacuum cleaner, 2 Suction tool, 3 Suction pipe, 4 Connection pipe, 5 Suction hose, 6 Main body unit, 7 Main body suction port, 8 Handle, 9 Operation switch, 10 Dust collection unit, 10a Dust collection unit, 11 Unit flow Inlet, 12 unit outlet, 13 inlet pipe, 14 inlet, 15 outlet, 16 outlet pipe, 20 swirling chamber, 20a cylindrical portion, 20b conical portion, 21 primary opening, 22 primary dust collecting chamber, 23 secondary opening, 24 secondary dust collection chamber, 30 friction body, 31 partition wall, 32 dust collection body, 33 rotational drive, 40 dust collection container, 41 bottom, 42 outer wall

Claims (12)

A swirl chamber that swirls dust-containing air to separate dust from the dust-containing air;
A dust collection part for collecting at least a part of the dust that has passed through the swirl chamber;
A friction part that rubs and charges the dust collection part;
A dust removing unit for removing dust collected in the dust collecting unit;
A dust collector comprising: A swirl chamber that swirls dust-containing air to separate dust from the dust-containing air;
A dust collection part for collecting at least a part of the dust that has passed through the swirl chamber;
Rubbing the dust collecting part to charge the dust collecting part and remove the dust collected in the dust collecting part;
A dust collector comprising: The friction part is formed of a conductive material,
The dust collecting apparatus according to claim 1 or 2, wherein a charge discharging means for discharging charges from the friction part is electrically connected to the friction part.   The dust collector according to claim 1, wherein the dust removing unit is made of a soft material.   The dust collecting apparatus according to claim 2, wherein the friction part is formed of a soft material.   The dust collector according to any one of claims 1 to 5, further comprising a static elimination unit that neutralizes a dust collection part charged by the friction part.   The dust collector according to claim 6, wherein the charge removing unit discharges, to the dust collector, a charge having a polarity opposite to a charge generated when the dust collector is rubbed by the friction portion.   The dust collector according to claim 6, wherein the charge removing unit is formed integrally with the friction part, and discharges the dust collection part by rubbing the dust collection part.   9. The wall according to claim 1, wherein the dust collection unit is a wall surface that surrounds the dust collection chamber, which is a space that communicates with the swirl chamber and collects at least a part of the dust separated in the swirl chamber. The dust collector according to item 1. The dust collection chamber includes a first dust collection chamber for collecting first dust and a second dust collection chamber for collecting second dust that is smaller than the first dust,
The dust collection device according to claim 9, wherein the dust collection unit is a wall surface surrounding the second dust collection chamber.   The dust collection unit according to any one of claims 1 to 8, wherein the dust collection unit is provided on a downstream side of the swirl chamber and collects dust contained in the dust-containing air that has passed through the swirl chamber. apparatus. A dust collector according to any one of claims 1 to 11,
An electric blower for generating an air flow inside the swirl chamber;
Electric vacuum cleaner.

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