TW201434428A - Electrical vacuum cleaner - Google Patents

Abstract

An electrical vacuum cleaner in which fibrous dusts are not easily attached to a cylindrical-shaped filtration filter located inside a cylindrical-shaped container body is provided. The electrical vacuum cleaner includes: the cylindrical-shaped container body; a first filtration filter portion having a shorter cylindrical shape than the container body and accommodated in the container body, forming a ring-shaped separation chamber between itself and the container body; an isolated portion, having a shape that a diameter is larger than the first filtration filter portion and an outer diameter is smaller than the container body, and forming a dust collection chamber disposed adjacent to and interconnecting with the separation chamber, wherein the separation chamber is adjacent to an end portion of the first filtration filter portion; and a rotation supporting portion rotatably supporting the first filtration filter portion with a center line of the container body as a rotating axis.

Description

Electric vacuum cleaner

Embodiments of the invention relate to an electric vacuum cleaner.

A centrifugal separator type electric vacuum cleaner is known which includes a cylindrical container body and a filter filter which is housed in the container body and forms an annular separation chamber between the container body and the container body. The existing electric vacuum cleaner centrifugally separates air from dust by a swirling flow generated in the separation chamber.

[Previous Technical Literature]

[Patent Literature]

Patent Document 1: Japanese Patent Laid-Open Publication No. 2012-236042

Patent Document 2: Japanese Patent Laid-Open Publication No. 2011-177294

Further, the dust sucked by the vacuum cleaner contains fibrous dust such as swarf or hair in addition to granular or powdery dust. Moreover, the long fibrous dust exceeding the outer circumference of the filter portion is occasionally attached to the filter. unit.

Once the fibrous dust is attached to the filter, it is difficult to unravel. In the case where the fibrous dust is attached to the filter, the user of the vacuum cleaner must cut off the fibrous dust by using scissors or the like, or remove the fibrous dust to remove it, thereby maintaining the filter. In addition, there are also adverse health conditions.

Accordingly, an object of the present invention is to provide an electric vacuum cleaner in which fibrous dust is less likely to be wound around a cylindrical filter that is housed inside a cylindrical container body.

In order to solve the above problems, an electric vacuum cleaner according to an embodiment of the present invention includes a cylindrical container body, and a filter filter portion is housed in a cylindrical shape shorter than the container body and housed in the container body. An annular separation chamber is formed between the container bodies; the partition portion has a shape larger than the filter filter portion and has a smaller outer diameter than the container body, and is formed to be adjacent to one end portion of the filter filter portion. a dust collecting chamber provided in a manner that the separation chambers are adjacent to each other; and a rotation supporting portion that rotatably supports the filter filter portion with a center line of the container body as a rotation axis.

Further, the electric vacuum cleaner includes a rotation support portion that individually and rotatably supports the filter filter portion and the partition portion with a center line of the container body as a rotation axis.

Thereby, it is possible to obtain an electric vacuum cleaner in which fibrous dust is less likely to be wound around a cylindrical filter.

1‧‧‧Electric vacuum cleaner

2‧‧‧ Vacuum cleaner body

3‧‧‧ Department of Tube

5‧‧‧ body shell

6‧‧‧ Wheels

7‧‧‧Dust separation dust collector

8‧‧‧Electric blower

9‧‧‧Main Control Department

11‧‧‧Power cord

12‧‧‧ body connection

14‧‧‧Insert plug

19‧‧‧Connecting tube

21‧‧‧Dust collecting hose

22‧‧‧Hand management tube

23‧‧‧ grip

24‧‧‧Operation Department

24a‧‧‧Stop switch

24b‧‧‧Start switch

25‧‧‧Extension tube

26‧‧‧Inhalation body

28‧‧‧Inhalation

29‧‧‧Rotating cleaning body

31‧‧‧Electric motor

35‧‧‧ container body

35a‧‧‧ side wall

36‧‧‧Inhalation tube

37‧‧‧First filter unit

37a‧‧‧ bottom wall

38‧‧‧Isolation Department

39‧‧‧Return filter unit

41, 141‧‧ ‧ Rotating support

42‧‧‧ 盖壁

42a‧‧‧ openings

43‧‧‧Spray tube

45‧‧‧Second filter unit

47‧‧‧Open end

48‧‧‧closed end

51‧‧‧Separation room

52‧‧‧dust room

53‧‧‧Conformal frame

55‧‧‧First filter

56‧‧‧Box parts

57‧‧‧Box parts

58‧‧‧ openings

59, 61, 62‧ ‧ gap

63‧‧‧ side wall

65‧‧‧First core retaining unit

66‧‧‧Second core retaining unit

67, 167‧‧‧ shaft core

68, 168‧‧‧ first bearing

69, 169‧‧‧ second bearing

71, 171‧‧‧ bones

72‧‧‧First core half

73‧‧‧Second core half

75‧‧‧resist body

76, 176‧‧‧First Bearing Holder

77, 177‧‧‧Second bearing retaining unit

78‧‧‧Bone

79, 179‧‧‧ stepped fittings

81‧‧‧ Sealing Department

82‧‧‧Exhaust air path

83‧‧‧ wing

101‧‧‧ container body

102‧‧‧First filter unit

103‧‧‧Isolation Department

104‧‧‧Electric vacuum cleaner

105‧‧‧Dust separation dust collector

106‧‧‧Filter filter

166‧‧‧Axis retaining section

172‧‧‧C-ring

173‧‧‧clear

175‧‧‧ slot

C‧‧‧ center line

F‧‧‧ whirlpool

Fi‧‧‧dust

R‧‧‧solid arrow

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

FIG. 2 is a longitudinal cross-sectional view schematically showing a dust separating and dust collecting device of the electric vacuum cleaner according to the first embodiment of the present invention.

3 is a perspective view showing a first filter unit of the electric vacuum cleaner according to the first embodiment of the present invention.

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

Fig. 5 is a longitudinal cross-sectional view schematically showing a dust separating and dust collecting device of a conventional electric vacuum cleaner.

6(a), 6(b), 6(c), and 6(d) are cross-sectional views schematically showing a dust separating and dust collecting device of the electric vacuum cleaner according to the first embodiment of the present invention.

FIG. 7 is a longitudinal cross-sectional view schematically showing a dust separating and dust collecting device of the electric vacuum cleaner according to the first embodiment of the present invention.

FIG. 8 is a longitudinal cross-sectional view schematically showing a dust separating and dust collecting device of the electric vacuum cleaner according to the second embodiment of the present invention.

An embodiment of an electric vacuum cleaner according to a first embodiment of the present invention will be described with reference to Figs. 1 to 7 including a conventional drawing for comparison.

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

As shown in Fig. 1, the electric vacuum cleaner 1 of the present embodiment is a so-called canister type electric vacuum cleaner. The vacuum cleaner 1 includes a cleaner body 2 that is movable on a surface to be cleaned, and a tube portion 3 that can be detachably attached to the cleaner body 2. The cleaner body 2 is connected in communication with the tube portion 3.

The cleaner body 2 includes: a main body case 5; a pair of wheels 6 respectively disposed on the left and right sides of the main body casing 5; a dust separating and dust collecting device 7 disposed in the front half of the main body casing 5, and detachable; The blower 8 is housed in the rear half of the main body casing 5, and the main body control unit 9 mainly controls the electric blower 8 and a power supply cord 11 to introduce electric power into the electric blower 8.

The vacuum cleaner main body 2 drives the electric blower 8 with electric power supplied via the power supply line 11, and the negative pressure generated by the drive of the electric blower 8 acts on the pipe part 3, and the air containing the dust is taken in from the to-be-cleaned surface by the pipe part 3 ( As "dusty air", dust is separated from dusty air, and the separated dust is collected and accumulated, and the separated air is discharged.

A main body connection port 12 is provided at a front portion of the main body casing 5. The main body connecting port 12 is an inlet of the dust-containing air to the cleaner body 2, and communicates the connecting pipe portion 3 with the dust separating dust collecting device 7.

The wheel 6 provided on both side faces of the main body casing 5 is a large-diameter moving wheel that supports the cleaner body 2.

The dust separating dust collecting device 7 flows the dust-containing air flowing from the surface to be cleaned through the pipe portion 3 and the main body connecting port 12 from the negative pressure generated by the electric blower 8. (hereinafter referred to as "dusty air") separates dust and traps and accumulates the dust. On the other hand, the dust separating dust collecting device 7 feeds the cleaned air from which the dust has been removed to the electric blower 8. The electric blower 8 discharges the air taken in from the dust separating and dust collecting device 7 to the outside of the cleaner main body 2.

Here, the dust separating dust collecting device 7 is centrifugally separated, and the dust is separated from the air by the swirling flow.

The main body control unit 9 includes a microprocessor (not shown) and a storage device (not shown) that stores various arithmetic programs (programs) and parameters (parameters) executed by the microprocessor. The storage device stores a plurality of modes of operation set in advance. The plurality of operation modes set in advance correspond to operations performed by the user from the operation unit 24.

Each operation mode is set to an input value different from each other (an input value of the electric blower 8). The main body control unit 9 uniquely selects an arbitrary operation mode corresponding to the operation content from a plurality of operation modes set in advance, and reads the operation mode from the storage unit in accordance with the read operation mode, in accordance with the operation of the user. To control the electric blower 8.

A plug 14 is provided at a free end of the power cord 11.

The pipe portion 3 sucks dust-containing air from the surface to be cleaned by the suction negative pressure from the cleaner body 2, and guides the dust-containing air to the cleaner body 2. The pipe portion 3 includes a connecting pipe 19 that is detachably connected to the cleaner body 2 as a joint, a dust collecting hose 21 connected to the connecting pipe 19, and a hand operating pipe 22 connected to the dust collecting hose 21 a grip portion 23 protruding from the hand operating tube 22; the operating portion 24, The extension tube 25 is detachably connected to the hand operation tube 22, and the suction port body 26 is detachably connected to the extension tube 25.

The connecting pipe 19 is a joint that is detachably attached to the main body connecting port 12, and is connected to the dust separating and dust collecting device 7 through the main body connecting port 12.

The dust collecting hose 21 is a long and flexible substantially cylindrical hose. One end portion of the dust collecting hose 21 (here, the end portion on the downstream side in the flow direction of the dust-containing air) is connected and connected to the connecting pipe 19.

The hand operating tube 22 relays the dust collecting hose 21 and the extension tube 25. One end portion (downstream end portion) of the hand operated tube 22 is connected to the other end portion (end portion on the upstream side) of the dust collecting hose 21 .

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

The operation unit 24 includes switches that are associated with a plurality of operation modes. Specifically, the operation unit 24 includes a stop switch 24a that is associated with the operation stop operation of the electric blower 8, and a start switch 24b that is associated with the operation start operation of the electric blower 8.

The stop switch 24a and the start switch 24b are electrically connected to the main body control unit 9. The user of the electric vacuum cleaner 1 can operate the operation unit 24 to uniquely select the operation mode of the electric blower 8. The start switch 24b also functions as a selection switch of the operation mode during the operation of the electric blower 8. In this case, the main body control unit 9 switches the operation mode in the order of strong→medium→weak→strong→......... each time an operation signal is received from the start switch 24b. In addition, the operation unit 24 may also separately include A weak operation switch (not shown), a middle operation switch (not shown), and a strong operation switch (not shown) are provided instead of the start switch 24b.

The extension tube 25 is a telescopic elongated and substantially cylindrical tube. The extension tube 25 has a telescopic structure in which a plurality of cylindrical bodies are stacked. One end portion (end portion on the downstream side) of the extension pipe 25 and the other end portion (end portion on the upstream side) of the hand operation pipe 22 are detachably connected to each other. The extension pipe 25 is connected and connected to the dust separation dust collector 7 through the hand operation pipe 22, the dust collecting hose 21, and the connection pipe 19.

The suction port body 26 has a structure that is freely movable or slidable on a swept surface such as a wooden floor or a carpet, and has a suction port 28 in a moving state or a sliding state with respect to the bottom surface to be swept away. Further, the suction port body 26 includes a rotatable cleaning body 29 that is rotatably disposed at the suction port 28, and a motor 31 that drives the rotary cleaning body 29.

One end portion (here, the downstream end portion) of the suction port body 26 has a joint structure that can be attached to and detached from the other end portion (the end portion on the upstream side) of the extension pipe 25. The suction port body 26 is connected to the dust separating and dust collecting device 7 through the extension pipe 25, the hand operation pipe 22, the dust collecting hose 21, and the connection pipe 19. In other words, the suction port body 26, the extension pipe 25, the hand operation pipe 22, the dust collecting hose 21, the connection pipe 19, and the dust separating dust collecting device 7 form a suction air path from the electric blower 8 to the suction port 28.

The electric vacuum cleaner 1 activates the electric blower 8 by an operation performed by the user using the start switch 24b. For example, when the start switch 24b is operated in a state where the electric blower 8 is stopped, the electric vacuum cleaner 1 first operates the electric blower 8 in the strong operation mode, and again operates the start switch 24b to operate the electric blower 8 in the middle. In the above-described operation, the electric blower 8 is operated in the weak operation mode by operating the start switch 24b, and is repeated in the same manner as follows.

The strong operation mode, the medium operation mode, and the weak operation mode are a plurality of predetermined operation modes, and the electric power value input to the electric blower 8 is decreased in the order of the strong operation mode, the middle operation mode, and the weak operation mode. The activated electric blower 8 discharges air from the dust separating dust collecting device 7 to make the inside thereof a negative pressure.

The negative pressure in the dust separating dust collecting device 7 sequentially acts on the suction port body 26 through the main body connecting port 12, the connecting pipe 19, the dust collecting hose 21, the hand operating pipe 22, the extension pipe 25, and the suction port body 26. Suction port 28. The vacuum cleaner 1 sweeps the swept surface by suctioning the dust on the surface to be cleaned together with the air by the negative pressure acting on the suction port 28. The dust separating dust collecting device 7 separates dust from the dust-containing air sucked into the vacuum cleaner 1, and accumulates the separated dust. On the other hand, the dust separating dust collecting device 7 sends the air that has been separated from the dust-containing air to the electric blower 8.

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

FIG. 2 is a longitudinal cross-sectional view schematically showing a dust separating and dust collecting device of the electric vacuum cleaner according to the first embodiment of the present invention.

As shown in FIG. 2, the dust separating and dust collecting device 7 of the first embodiment has a substantially columnar shape as a whole. The dust separating dust collecting device 7 includes a container body 35, a suction pipe 36, a first filter portion 37, a partition portion 38, a return filter portion 39, a rotation support portion 41, a cover wall 42, a discharge pipe 43, and a second filter. Part 45.

In addition, the dust separation dust collector 7 can also be used as a center line of the cylindrical container body 35 as a posture in a state of being attached to the cleaner body 2. C is oriented in the vertical direction, and the center line C may be oriented in the horizontal direction, or the center line C may be inclined to any other angle.

The container body 35 has a bottomed cylindrical shape having an open end 47 at an upper end portion and a closed end 48 at an lower end portion. Inside the container body 35, a separation chamber 51 is formed to centrifugally separate dust-containing air into dust and air, and a dust collecting chamber 52 to accumulate the separated dust.

The suction pipe 36 is connected to the container body 35 via the open end 47 side of the side wall 35a of the container body 35, and is an inlet for taking dust-containing air into the dust separating dust collecting device 7.

The suction pipe 36 guides the air flowing into the dust separating dust collector 7 from the pipe portion 3 toward the tangential direction of the inner circumferential surface of the container body 35 into the container body 35, and generates a swirling flow F in the container body 35. The suction pipe 36 is integrally formed on the side wall 35a.

Further, the suction pipe 36 may be inclined with respect to a horizontal plane in a vertical direction with respect to the center line C on a plane orthogonal to the center line C of the container body 35 as long as the swirling flow F is generated in the container body 35. .

The first filter unit 37 has a cylindrical shape shorter than the container body 35, and an upper end portion of the first filter unit 37 (an end portion on the side close to the open end 47 of the container body 35) and a container body 35 are provided. The cover wall 42 of the open end 47 is adjacent.

The first filter unit 37 is housed in the container body 35, and an annular separation chamber 51 is formed between the outer peripheral surface of the cylindrical portion and the inner peripheral surface of the cylindrical portion of the container body 35, and the first filter unit 37 becomes dust separation. A primary filter of the dust collecting device 7.

The separation chamber 51 is separated from the outer peripheral surface of the first filter unit 37 and the inner peripheral surface of the container body 35 to generate a swirling flow F to separate dust and air from the dust-containing air. Further, during the period in which the swirling flow F in the separation chamber 51 immediately after the start of the electric blower 8 or the stop transition is not sufficiently developed, it is of course possible to prevent the dust from flowing out of the container main body 35 to the discharge pipe 43 after the development of the swirling flow F.

Further, as shown in FIGS. 2 and 3, the first filter unit 37 includes a cylindrical shape-shaped frame 53 having a large opening formed on the side surface thereof, and a first filter element 55 provided in the shape-retaining frame 53, A filter filter 55 is wound into a cylindrical shape so as to surround the conformal frame 53.

The shape retaining frame 53 holds the first filter filter 55 in a cylindrical shape. The shape-retaining frame 53 includes a linear frame member 56, a plurality of portions that are spaced apart from each other and disposed on a side surface corresponding to a cylindrical shape, and an annular frame member 57 that is coupled to the frame member 56 and corresponds to a cylindrical shape. The respective edges of the two ends.

The partition portion 38 has a larger diameter than the first filter element portion 37 and has a smaller outer diameter than the container body 35. The partition portion 38 is adjacent to the lower end portion of the first filter filter portion 37 (the end portion on the side close to the closed end 48 of the container body 35). The partition portion 38 has an opening 58 and separates the separation chambers 51 adjacent to each other from the dust collecting chamber 52 in a state of being connected by the gap 59.

The opening 58 of the partition portion 38 is closer to the center line C of the container body 35 than the annular gap 59 between the outer peripheral edge of the partition portion 38 and the inner peripheral surface of the container body 35, and is connected to the separation chamber 51 and the set in the same manner as the gap 59. Dust chamber 52.

The space between the lower portion (bottom surface) side of the container body 35 is smaller than the partition portion 38, A dust collecting chamber 52 for accumulating dust flowing from the separation chamber 51 through the gap 59. The gap 59 guides the swirling flow F generated in the separation chamber 51 together with the dust to the dust collecting chamber 52, and the opening 58 returns the swirling flow F guided into the dust collecting chamber 52 to the separation chamber 51.

Further, the partition portion 38 may have a bottomed cylindrical shape that opens toward the bottom surface of the container body 35 as indicated by a chain double-dashed line in FIG. 2 . In this case, the outer peripheral surface of the cylindrical side wall 63 of the partition portion 38 indicated by the two-dot chain line is separated from the container body 35 by a gap 61, and the lower end of the partition portion 38 and the bottom surface of the container body 35. There is a gap 62 between them.

The separation chamber 51 and the dust collection chamber 52 communicate with each other through the gap 59, the gap 61, and the gap 62. The gap 61 is separated from the inner circumferential surface of the container body 35 and the outer circumferential surface of the partition portion 38 over the entire circumference. The gap 59, the gap 61, and the gap 62 guide the swirling flow F generated in the separation chamber 51 together with the dust to the dust collecting chamber 52.

The return filter unit 39 provided in the opening 58 of the partition portion 38 is a filter having a large aperture which does not allow the fibrous dust such as lint or cotton dust which flows into the dust collecting chamber 52 to return to the separation chamber 51. For example, a mesh filter is formed.

The rotation support portion 41 rotatably supports the first filter portion 37 with the center line C of the container body 35 as a rotation axis.

The rotation support portion 41 includes a first core holding portion 65 provided at the bottom of the container body 35, a second core holding portion 66 disposed on the open end 47 side of the container body 35, and a shaft core portion 67 that is erected at the first The first core bearing 68 is disposed between the axial core holding portion 65 and the second axial core holding portion 66; the first bearing 68 is disposed at an end portion of the lower side of the first filter filter portion 37 (the end portion near the closed end 48 of the container body 35); And the second bearing 69, An end portion (an end portion on the side close to the open end 47 of the container body 35) disposed above the first filter filter portion 37.

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

The second core holding portion 66 is concentrically arranged with respect to the center line C of the container body 35. The second core holding portion 66 is fixed to the cover wall 42 or the discharge pipe 43 by a plurality of aggregates 71 that extend radially. The space between the plurality of aggregates 71 passes through the air flowing from the inside of the first filter unit 37 to the discharge pipe 43.

The shaft core portion 67 is stretched between the first core holding portion 65 and the second core holding portion 66 and fixed to the container body 35. The shaft core portion 67 includes a first core core portion 72 that reaches the partition portion 38 from the first core core holding portion 65 at the bottom of the container body 35, and a second core core portion 73, followed by the first core core portion 72. The second core holding portion 66 is reached.

The first core half 72 supports the partition 38 and the partition 38 is non-rotatably fixed to the container body 35. The first core half 72 is disposed in the dust collecting chamber 52, and includes a resistor 75 that blocks the flow of air flowing in and swirling from the separation chamber 51 side toward the dust collecting chamber 52 side to generate a vortex.

The resistor 75 has a plate shape that protrudes from the first core half 72 toward the diameter direction of the container body. The resistor body 75 disturbs the air flow around the first core half 72, causing dust in the dust collecting chamber 52 to stay or wrap around the first core half 72 to promote accumulation of dust in the dust collecting chamber 52. .

In addition to the first core half 72, the resistor body 75 may be integrally formed with the container body 35 at the bottom of the container body 35, or may be biased against the container body 35. Set on the inner peripheral side.

The second axial core portion 73 is made of metal, and the first filter filter portion 37 is rotatably held via the first bearing 68 and the second bearing 69.

The first bearing 68 and the second bearing 69 are slide bearings impregnated with lubricating oil, and are composed of a so-called oilless bearing or a ball bearing that exhibits self-lubricating properties.

The first filter unit 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 at a bottom wall 37a that blocks an end portion of the lower side of the first filter filter portion 37 (an end portion on the side close to the closed end 48 of the container body 35).

The second bearing holding portion 77 is disposed at an upper end portion of the first filter filter portion 37 (an end portion on the side closer to the open end 47 of the container body 35), and is disposed concentrically with respect to the first filter filter portion 37. The second bearing holding portion 77 is fixed to the first filter portion 37 by a plurality of aggregates 78 that extend radially.

The space between the plurality of aggregates 78 passes through the air flowing from the inside of the first filter unit 37 to the discharge pipe 43.

Since the first filter unit 37 is rotatably supported by the rotation support portion 41, it receives the flow of the air swirled in the separation chamber 51, that is, receives the swirling flow F and rotates. The swirling flow F imparts rotation to the first filter portion 37 during the flow along the outer peripheral surface of the first filter portion 37 or during the flow into the inside of the first filter portion 37 through the first filter 55. force.

The cover wall 42 blocks the open end 47 of the container body 35. Cover wall 42 has a relative An opening 42a that is substantially concentric with the container body 35. The opening 42a communicates with the space inside the first filter unit 37 and the inside of the discharge pipe 43.

A stepped fitting portion 79 that prevents intrusion of dust is provided at an adjacent portion of the first filter portion 37 and the partition portion 38.

Since the first filter unit 37 is relatively rotated with respect to the cover wall 42 , the adjacent portion of the cover wall 42 and the first filter unit 37 is provided with hindering air from the separation chamber 51 side to the first filter unit 37 . The inner portion of the inner space flows into a seal portion 81.

When dust or the like is entered into a slight gap between the first filter unit 37 and the cover wall 42, the first filter unit 37 is prevented from rotating. Thereby, the sealing portion 81 ensures the flow of air in a minute gap between the first filter element portion 37 and the cover wall 42 or prevents the intrusion of dust and ensures reliable rotation of the first filter element portion 37. The sealing portion 81 has, for example, a so-called labyrinth structure.

The discharge pipe 43 closes the open end 47 of the container body 35 to cover the cover wall 42. The discharge pipe 43 is an outlet of the air in the dust separation dust collector 7, and is an exhaust air passage 82 that sends the air passing through the first filter unit 37 and the second filter unit 45 to the electric blower 8.

The second filter unit 45 filters the air flowing in from the opening 42 a of the cover wall 42 to the exhaust air passage 82 . The second filter unit 45 collects fine particulate fine dust that has passed through the first filter unit 37 while the swirling flow F of the separation chamber 51 has not sufficiently developed immediately after the start of the electric blower 8 or immediately after the stop. Fine fine particulate fine dust is prevented from reaching the electric blower 8.

The second filter unit 45 is a pleated filter in which a convex shape and a concave portion which are formed in a disk shape and radially extend from the center side are alternately arranged.

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

3 is a perspective view showing a first filter unit of the electric vacuum cleaner according to the first embodiment of the present invention.

As shown in FIG. 3, the first filter unit 37 of the dust separating and dust collecting device 7 of the first embodiment includes a flap 83 for receiving the flow of air swirling in the separation chamber 51.

The flap 83 is provided on the inner peripheral side of the first filter unit 37, and extends toward the center line of the first filter unit 37, that is, the center line C of the container body 35. The flap 83 is integrated with the conformal frame 53. The flap 83 receives the air that has flowed into the inside of the first filter unit 37 through the first filter 55 and imparts a rotational force to the first filter unit 37.

Next, the operation of the electric vacuum cleaner 1 of the first embodiment will be described.

Here, first, in comparison with the first embodiment, a conventional electric vacuum cleaner 104 including a first filter unit 102 that does not rotate with respect to the container body 101 will be described with reference to FIGS. 4 and 5 .

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

In addition, FIG. 5 is a view schematically showing dust separation of a conventional electric vacuum cleaner. Longitudinal section of the dust collecting device.

As shown in Fig. 4 (a), in the conventional vacuum cleaner 104, a long fibrous dust fi exceeding the outer circumference of the first filter unit 102 flows into the dust separating dust collecting device through the swirling flow F. 105, there is a case where one end portion of the dust fi is attached to the filter 106 by passing therethrough. Further, in the conventional vacuum cleaner 104, since the first filter unit 102 is fixed to the container body 101 without being rotated, as shown in FIG. 4(b), the fibrous dust of one end portion is attached to the filter 106. The film is attached to the filter 106 in a state of being washed away by the swirling flow F.

Finally, as shown in FIG. 4(c) and FIG. 5, the fibrous dust fi is attached to the filter 106 and cannot be easily unwound.

On the other hand, Fig. 6 (a), Fig. 6 (b), Fig. 6 (c), and Fig. 6 (d) are cross-sectional views schematically showing a dust separating and dust collecting device of the electric vacuum cleaner of the first embodiment.

In addition, FIG. 7 is a longitudinal cross-sectional view schematically showing a dust separating and dust collecting device of the electric vacuum cleaner of the first embodiment.

As shown in Fig. 6 (a), even in the vacuum cleaner 1 of the present embodiment, the long fibrous dust fi exceeding the outer circumference of the first filter unit 37 flows into the dust separation set by the swirling flow F. In the dust device 7, there is also a case where one end portion of the dust fi is attached to the first filter filter 55 so as to pass therethrough.

Further, as shown in FIG. 6(b), the fibrous dust fi having the one end portion attached to the first filter 55 is wound around the first filter 55 in a state of being washed away by the swirling flow F.

However, in the electric vacuum cleaner 1 of the present embodiment, the first filter filter portion 37 rotates with the swirling flow F (solid arrow R in Fig. 6), so the first filter filter 55 and the attached fibrous dust fi Rotating together, whereby the relative speed difference between the dust fi washed away by the swirling flow F and the first filter filter 55 is smaller than that of the existing electric vacuum cleaner 104, and the dust fi is in the separation chamber 51 before being attached to the first filter filter 55. Was washed away for longer and longer distances.

When the dust fi and the first filter unit 37 are continuously rotated, a slight disturbance of the swirling flow F or the like is caused, and as shown in FIG. 6( c ), one end portion of the dust fi is detached from the first filter 55 or Fall off.

The electric vacuum cleaner 1 of the present embodiment has a smaller relative speed difference between the dust fi and the first filter filter 55 than the conventional electric vacuum cleaner 104, and the dust fi has a longer time and a longer distance before being attached to the first filter filter 55. The margin.

Therefore, in the electric vacuum cleaner 1 of the present embodiment, a slight disturbance such as the swirling flow F may be encountered many times, and therefore the chance of the dust fi being detached or detached from the first filter 55 is increased to a considerable extent.

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

Further, the swirling flow F merges with the new dust-containing air flowing from the suction pipe 36 to the separation chamber 51 every time it is rotated one turn, and changes the wind direction to the center line C direction of the container main body 35, in other words, approaches the first The direction of the filter 55 is filtered. A part of the swirling flow F of the changed wind direction passes through the first filter 55 and is guided to the outside of the dust separating dust collecting device 7.

In this process, in the case of the conventional electric vacuum cleaner 104 of FIG. 4, since the filter filter 106 that does not rotate is included, a portion of the swirling flow F that has changed the wind direction continues to pass through the substantially fixed position of the filter 106. As a result, dust is slowly attached to the portion of the filter 106 and eventually clogged. When a clogging occurs in a specific portion of the filtration filter 106, the flow velocity of the clogging portion is lowered, and the range is further expanded, and as a result, the entire filter filter 106 is induced to be clogged.

On the other hand, in the vacuum cleaner 1 of the present embodiment, the first filter filter 55 is rotated by the swirling flow F, so that a part of the swirling flow F in which the wind direction has been changed does not continue to pass through the fixed position of the first filter 55. Rather, it is widely dispersed through parts throughout the week.

Therefore, the vacuum cleaner 1 of the present embodiment does not cause clogging in a narrow range of the first filter 55, and it is easy to maintain the gas permeability, and it is easy to maintain the gas permeability of the entire first filter 55.

As described above, the vacuum cleaner 1 of the first embodiment includes the first filter unit 37 that is rotatable in the container body 35, thereby preventing dust, particularly fibrous dust, which is swirled in the separation chamber 51 from being attached to the first filter. Filter portion 37.

In particular, by concentrating the portion rotated by the swirling flow F with the first filter portion 37, it is easy to obtain the rotational speed of the first filter portion 37, and the relative velocity of the first filter portion 37 with respect to the swirling flow F can be made. The difference is greatly reduced to prevent the fibrous dust from being attached to the first filter unit 37.

Further, by focusing the portion rotated by the swirling flow F on the first filter portion 37, when the vacuum cleaner 1 is started, the first filter portion 37 is easily realized. The rotation of the swirling flow F is rapidly synchronized, and during the start-up transition, the relative speed difference of the first filter element portion 37 with respect to the swirling flow F is also greatly reduced to prevent the fibrous dust from being attached to the first filter element portion 37.

Further, in the electric vacuum cleaner 1 of the first embodiment, the first filter unit 37 is rotated by the swirling flow F generated in the container body 35, so that an additional component such as a prime mover or a flow velocity with the swirling flow F is not required. A synchronized measuring device or control system suppresses the increased number of parts and ensures reliability.

Further, the electric vacuum cleaner 1 of the first embodiment includes the flap 83 in the first filter unit 37, whereby the driving torque of the first filter unit 37 can be increased, and the swirling flow F and the first filter can be easily made. The rotation of the portion 37 and the partition portion 38 is synchronized.

Further, the electric vacuum cleaner 1 of the first embodiment does not require an additional work for assembling the first filter unit 37 by the conformal frame 53 having the flap 83.

Further, the electric vacuum cleaner 1 of the first embodiment includes the flap 83 on the inner peripheral side of the first filter unit 37, and thus does not generate on the outer peripheral surface of the first filter 55, that is, the surface exposed to the swirling flow F. A complicated distribution or eddy current flow rate can prevent dust from adhering to the first filter filter 55.

Further, since the electric vacuum cleaner 1 of the first embodiment includes the resistor 75 in the dust collecting chamber 52, the accumulation efficiency of dust in the dust collecting chamber 52 can be improved, and it is difficult to disassemble a large amount of dust by being entangled in a block. It is easy to clean and clean.

Therefore, according to the electric vacuum cleaner 1 of the first embodiment, it is possible to provide a cylindrical shape in which the fibrous dust is less likely to be wound around the inside of the cylindrical container body 35. An electric vacuum cleaner 1 of a filter 55.

Next, a dust separating and dust collecting device of the electric vacuum cleaner of the second embodiment will be described.

FIG. 8 is a longitudinal cross-sectional view showing a dust separating and dust collecting device of the electric vacuum cleaner according to the second embodiment, and the same components as those in FIG. 2 of the first embodiment are denoted by the same reference numerals and are different from the first embodiment. The aspects are detailed. The second embodiment differs from the first embodiment in that the first filter unit and the partition are individually rotated.

As shown in Fig. 8, the dust separating and dust collecting device 7 of the second embodiment has a substantially columnar shape as a whole. The dust separating and dust collecting device 7 includes a container body 35, a suction pipe 36, a first filter portion 37, a partition portion 38, a return filter portion 39, a rotation support portion 141, a cover wall 42, a discharge pipe 43, and a second filter. Part 45.

The rotation support portion 141 individually and rotatably supports the first filter portion 37 and the partition portion 38 with the center line C of the container body 35 as a rotation axis. The rotation support portion 141 includes a core holding portion 166 disposed on the open end 47 side of the container body 35, and the shaft core portion 167 is rotatably held relative to the core holding portion 166; the first bearing 168 is disposed at the first An end portion of the lower portion of the filter portion 37 (an end portion close to the side closer to the closed end 48 of the container body 35); and a second bearing 169 provided at an end portion of the first filter filter portion 37 (close to the container body 35) The end of the side of the open end 47).

The core holding portion 166 is a boss that supports the rod-shaped core portion 167 on the center line C of the container body 35. The core holding portion 166 is opposite to the container body 35 The center line C is concentrically configured. The core holding portion 166 is fixed to the cover wall 42 or the discharge pipe 43 by a plurality of aggregates 171 extending radially.

The space between the plurality of aggregates 171 passes through the air flowing from the inside of the first filter unit 37 to the discharge pipe 43.

The shaft core portion 167 protrudes from the core holding portion 166 and penetrates the first filter portion 37 to reach the partition portion 38. The upper end portion of the shaft core portion 167 (the end portion on the side close to the open end 47 of the container body 35) is rotatably held by the core holding portion 166, and the lower end portion of the shaft core portion 167 (close to the container body 35) The end of the closed end 48 is fixed to the partition 38.

The shaft core portion 167 is made of metal, and the first filter unit portion 37 is rotatably held via the first bearing 168 and the second bearing 169.

Further, the shaft core portion 167 rotatably holds the shaft core holding portion 166 via the C-shaped ring 172. The C-ring 172 is inserted into the slit 173 of the core holding portion 166 to be fitted into the groove 175 of the shaft core portion 167. The C-ring 172 prevents the shaft core portion 167 from being pulled out from the core core holding portion 166, and can rotate the shaft core portion 167 with respect to the shaft core holding portion 166.

The first bearing 168 and the second bearing 169 are sliding bearings impregnated with lubricating oil, and are so-called oil-free bearings or ball bearings that exhibit self-lubricity.

The first filter unit 37 includes a first bearing holding portion 176 that holds the first bearing 168 and a second bearing holding portion 177 that holds the second bearing 169. The first bearing holding portion 176 and the second bearing holding portion 177 are integrally formed in the first filter filter portion 37 to have a sleeve shape.

The first bearing holding portion 176 is provided at a bottom wall 37a that closes an end portion of the lower portion of the first filter filter portion 37 (an end portion on the side close to the closed end 48 of the container body 35).

The second bearing holding portion 77 is disposed at an upper end portion of the first filter filter portion 37 (an end portion on the side closer to the open end 47 of the container body 35), and is disposed concentrically with respect to the first filter filter portion 37.

Since the first filter unit 37 is rotatably supported by the rotation support portion 141, it receives the flow of the air swirled in the separation chamber 51, that is, receives the swirling flow F and rotates. The swirling flow F imparts rotation to the first filter portion 37 during the flow along the outer peripheral surface of the first filter portion 37 or during the flow into the inside of the first filter portion 37 through the first filter 55. force.

The partition portion 38 is fixed to the lower end portion of the shaft core portion 67 (the end portion on the side close to the closed end 48 of the container body 35), and is rotatable integrally with the shaft core portion 167.

The cover wall 42 blocks the open end 47 of the container body 35. The cover wall 42 has an opening 42a that is substantially concentric with respect to the container body 35. The opening 42a communicates with the space inside the first filter unit 37 and the discharge pipe 43.

A stepped fitting portion 179 that prevents intrusion of dust is provided at an adjacent portion of the first filter portion 37 and the partition portion 38. The stepped fitting portion 179 is in contact with a minute force generated by the contact of the edge of the frame member 57 of the first filter unit 37 with the main surface of the partition portion 38.

That is, the partition portion 38 may be rotated by the swirling flow F, and the first filter filter portion 37 may be brought into contact with the first filter portion 37 to obtain a rotational force.

In other words, the partition 38 is in the same direction as the first filter unit 37. It rotates and follows the first filter unit 37 to rotate. Further, the minute force generated by the contact between the edge of the frame member 57 of the first filter unit 37 and the main surface of the partition portion 38 means the degree of rotation that does not interfere with the mutual relative rotation caused by the swirling flow F. force.

Next, the operation of the electric vacuum cleaner of the second embodiment will be described.

Here, in the electric vacuum cleaner of the second embodiment, the first filter filter 55 is rotated by the swirling flow F, and a part of the swirling flow F in which the wind direction has been changed does not continue to pass through the fixed position of the first filter 55, but the passage portion is spread over Since the dust which is swirled in the separation chamber 51, in particular, the fibrous dust is attached to the first filter unit 37, it is the same as that of the first embodiment.

In the vacuum cleaner 1 of the second embodiment, since the partition portion 38 is rotated together with the first filter element portion 37, the dust in the dust collecting chamber 52 can be stirred by the partition portion 38 in addition to the swirling flow F, so that the set can be realized. The distribution density of the dust in the dust chamber 52 is homogenized, and the offset of the dust can be eliminated to accumulate more dust.

Further, if the amount of accumulated dust in the dust collecting chamber 52 is increased, a large amount of dust is interposed between the container main body 35 and the partition portion 38, so that the dust hinders the rotation of the partition portion 38. Further, even if the amount of accumulated dust in the dust collecting chamber 52 is small, there is a possibility that a relatively large amount of dust is sucked and large dust is caught between the container body 35 and the partition portion 38, thereby preventing the rotation of the partition portion 38.

In this way, the electric vacuum cleaner 1 of the second embodiment separately rotatably supports the first filter unit 37 and the partition unit 38, whereby the first filter can be maintained even if the rotation of the partition 38 is inhibited and stopped. Swirling on the side of the filter portion 37 Turning, thereby preventing dust, particularly fibrous dust, swirling in the separation chamber 51 from being attached to the first filter portion 37.

In this way, the vacuum cleaner 1 of the second embodiment includes the first filter filter portion 37 that is rotatable in the container body 35, thereby preventing dust, particularly fibrous dust, which is swirled in the separation chamber 51 from being attached to the first filter. Filter portion 37. Further, by rotating the first filter unit 37 and the partition unit 38 individually, the rotation of the partition portion 38 can be stopped even if the amount of dust accumulation increases, and the rotation of the first filter unit 37 can be maintained. And the fibrous dust is prevented from being attached to the first filter unit 37.

Further, since the vacuum cleaner 1 of the second embodiment rotates the partition portion 38 in the same direction as the first filter element portion 37, it is not necessary to separate a member such as a separate prime mover that rotates the partition portion 38, or to flow with the swirling flow. The flow rate of F is synchronized with the measuring device or the control system, thereby suppressing the increase in the number of parts and ensuring reliability.

Further, the electric vacuum cleaner 1 of the present embodiment is not limited to a box type electric vacuum cleaner, and may be an upright type, a stick type, or a handy type.

The embodiments of the present invention have been described, but the embodiments are presented as examples and are not intended to limit the scope of the invention. The present invention can be implemented in various other forms, and various omissions, substitutions and changes may be made without departing from the scope of the invention. The invention or its modifications are intended to be included within the scope of the invention and the scope of the invention.

7‧‧‧Dust separation dust collector

35‧‧‧ container body

35a‧‧‧ side wall

36‧‧‧Inhalation tube

37‧‧‧First filter unit

37a‧‧‧ bottom wall

38‧‧‧Isolation Department

39‧‧‧Return filter unit

41‧‧‧Rotary support

42‧‧‧ 盖壁

42a‧‧‧ openings

43‧‧‧Spray tube

45‧‧‧Second filter unit

47‧‧‧Open end

48‧‧‧closed end

51‧‧‧Separation room

52‧‧‧dust room

53‧‧‧Conformal frame

55‧‧‧First filter

56‧‧‧Box parts

57‧‧‧Box parts

58‧‧‧ openings

59, 61, 62‧ ‧ gap

63‧‧‧ side wall

65‧‧‧First core retaining unit

66‧‧‧Second core retaining unit

67‧‧‧Axis core

68‧‧‧First bearing

69‧‧‧Second bearing

71‧‧‧Bone

72‧‧‧First core half

73‧‧‧Second core half

75‧‧‧resist body

76‧‧‧First Bearing Holder

77‧‧‧Second bearing retaining unit

78‧‧‧Bone

79‧‧‧Stepped fitting

81‧‧‧ Sealing Department

82‧‧‧Exhaust air path

C‧‧‧ center line

F‧‧‧ whirlpool

Claims (9)

An electric vacuum cleaner comprising: a cylindrical container body; a filter filter portion having a cylindrical shape shorter than the container body and housed in the container body to form a ring-shaped separation from the container body a partition portion having a diameter larger than that of the filter filter portion and having a smaller outer diameter than the container body, and being formed to communicate with each other adjacent to the separation chamber adjacent to one end portion of the filter filter portion a dust collecting chamber provided; and a rotation supporting portion that rotatably supports the filter filter portion with a center line of the container body as a rotation axis. The electric vacuum cleaner according to claim 1, wherein the filter filter portion is rotated by receiving a flow of air swirling in the separation chamber. The electric vacuum cleaner according to claim 1 or 2, wherein the filter filter portion is provided with a flap that receives a flow of air swirling in the separation chamber. The electric vacuum cleaner according to claim 3, wherein the filter filter portion comprises: a conformal frame provided with the flap; and a filter filter disposed at the retaining frame. The electric vacuum cleaner according to claim 4, wherein the flap is provided on an inner peripheral side of the filter portion. The electric vacuum cleaner according to claim 1, wherein: The electric vacuum cleaner includes a resistor body disposed in the dust collecting chamber to block a flow of swirling air flowing from the separation chamber to the dust collecting chamber to generate a vortex. An electric vacuum cleaner comprising: a cylindrical container body; a filter filter portion having a cylindrical shape shorter than the container body and housed in the container body to form a ring-shaped separation from the container body a partition portion having a diameter larger than that of the filter filter portion and having a smaller outer diameter than the container body, and being formed to communicate with each other adjacent to the separation chamber adjacent to one end portion of the filter filter portion The dust collecting chamber and the rotating support portion respectively support the filter filter portion and the partition portion so as to be rotatable by the center line of the container body as a rotation axis. The electric vacuum cleaner according to claim 7, wherein the partition portion rotates following the filter filter portion. The electric vacuum cleaner according to claim 8, wherein the partition portion obtains a rotational force from the filter filter portion by contact with the filter filter portion.