TWI581747B - Electric vacuum cleaner - Google Patents

Description

Electric vacuum cleaner

The present invention relates to an electric vacuum cleaner, and more particularly to an electric vacuum cleaner having a cyclone type dust collecting container that does not use a dust collecting bag.

In the past, an electric vacuum cleaner having a cyclone type dust collecting container that does not use a dust collecting bag is provided with an inner wall of the dust collecting container facing the outlet portion of the suction port of the dust collecting container, and is provided for rectifying the suction portion from the suction port. The protrusion of the dusty air. It is known that the dust-containing air sucked into the dust collecting container from the suction port is branched in a plurality of directions in the dust collecting container by the protruding portion, and the dust which is deposited on the inner wall surface like the protruding portion is filtered. A device in which dust on the surface of the net is blown off to suppress clogging of the mesh of the filter (for example, see Patent Document 1).

Advanced technical literature Patent literature

Patent Document 1: JP-A-2008-23217 (Page 3, Figure 6)

However, in the past, the dust collecting container of the electric vacuum cleaner has a single space because the protrusions for diverting the air are provided in the single space and The dust filter is separated, so the dust blown from the surface of the filter will accumulate on the surface of the filter again. Therefore, the air sucked by the electric blower passes through the filter screen in which the dust is accumulated, which causes a problem that the attraction force is lowered due to an increase in dust.

In addition, the air sucked by the electric blower passes through a filter screen in which dust is accumulated, which causes a problem of exhaust odor.

In order to solve the above problems, an object of the present invention is to provide an electric vacuum cleaner which is less likely to be less attractive and has an exhaust odor.

An electric vacuum cleaner that solves the above-described problems of the present invention includes: an electric blower disposed in the body; and a dust collecting container that collects and accumulates dust contained in air sucked by the electric blower; wherein the dust collecting container is composed of the following : a suction port; a dust collecting box having a dust collecting portion that collects dust and opening a surface opposite to the suction port; and a dust separating portion that separates dust-containing air into dust and dust-removing air; and a cover body to be free A manner of returning is provided in the dust box to close the opening of the dust box; and the dust separating portion has a plurality of openings communicating with the dust collecting portion.

According to the present invention, the dust separating portion that separates the dust-containing air into dust and the dust-removing air has a plurality of openings that communicate with the dust collecting portion. Therefore, the dust separated from the air in the dust separating portion cannot be in one opening. It can also be discharged from other openings by discharging it to the dust collecting part. Therefore, since the dust can be excluded from the path through which the air flows, it is possible to suppress a decrease in the attractive force due to the dust.

In addition, because dust can be excluded from the path through which air flows, The exhaust odor can be suppressed by preventing the air from passing through the accumulated dust.

1‧‧‧ Ontology

2‧‧‧Upper casing

2a‧‧‧ reel

3‧‧‧ Lower case

4‧‧‧ front housing

5‧‧‧ Body grip

6a‧‧‧ Wheels

6b‧‧‧Small wheels

7‧‧‧ Cover

8‧‧‧dust container

9‧‧‧Hose body connection

10‧‧‧ dust box

11‧‧‧Inhalation

12‧‧‧dust separation department

13‧‧‧Dust collection department

14‧‧‧Mesh cover

15‧‧‧Connected port filter

16‧‧‧1st filter

17‧‧‧ Cover

18‧‧‧Electric blower

18a‧‧‧Rating Wing

19‧‧‧Control substrate

20‧‧‧Hands

21‧‧‧Locking rod

21a‧‧‧Locking rod return shaft

22‧‧‧Inlet port connection

23‧‧‧Rotating Department

23a‧‧‧Circle wall

24‧‧‧Cylinder

25‧‧‧ suction port

26‧‧‧ venting holes

27‧‧‧1st opening

28‧‧‧2nd opening

29‧‧‧Connecting port

30‧‧‧Clocks

31‧‧‧ holding claws

32‧‧‧Snap hole

A33‧‧‧ ribs

B34‧‧‧ ribs

35‧‧‧Dust compression opening

36‧‧‧2nd filter

37‧‧‧ gap

100‧‧‧ electric vacuum cleaner

A‧‧‧Air flow

B‧‧ Air flow

C‧‧‧Air flow

D‧‧‧Air flow

E‧‧‧Air flow

F‧‧‧Air flow

G‧‧‧Attracting the wind

H‧‧‧Air flow

X1‧‧‧ dust

X2‧‧‧ dust

X3‧‧‧ dust

X4‧‧‧ dust

X5‧‧‧ dust

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

Fig. 2 is a cross-sectional view showing the electric vacuum cleaner according to the first embodiment of the present invention as seen from the side direction.

Fig. 3 is a perspective view showing the appearance of a dust collecting container of the electric vacuum cleaner according to the first embodiment of the present invention.

Fig. 4 is a perspective view showing the opened state of the lid of the dust collecting container.

Figure 5 cuts a portion of the dust box so that a perspective view of an important portion of the dust container can be seen.

Fig. 6 is an external perspective view of the dust separating portion enclosed in the dust collecting container.

Fig. 7 is a side view showing the appearance of a dust separating portion enclosed in a dust collecting container.

Fig. 8(a) is a schematic view schematically showing the axial direction of the rotating shaft and the cylindrical portion of the electric blower, and Fig. 8(b) is a schematic view showing the direction of rotation of the electric blower and the rotary portion in a simplified manner.

Fig. 9 is a view of the dust collecting container from which the lid body is removed as seen from the side of the lid body.

Figure 10 cuts a portion of the dust box so that a perspective view of a significant portion of the dust container can be seen.

Fig. 11 is a cross-sectional view showing the movement of dust and air in the electric vacuum cleaner according to the first embodiment of the present invention as seen from the side surface direction.

Fig. 12 is a perspective view of a principal part showing the movement of dust and air in the dust collecting container.

Embodiment 1

(Composition of electric vacuum cleaner)

Fig. 1 is a perspective view showing the appearance of an electric vacuum cleaner according to a first embodiment of the present invention, and Fig. 2 is a cross-sectional view showing the electric vacuum cleaner according to the first embodiment of the present invention as seen from a side surface direction. Hereinafter, the configuration of the electric vacuum cleaner according to the first embodiment of the present invention will be described with reference to Figs. 1 and 2 . In the respective drawings, the same reference numerals are given to the same or equivalent parts, and a part of the description is omitted.

As shown in Fig. 1, the electric vacuum cleaner 100 according to the first embodiment of the present invention includes a main body 1 and a dust collecting container 8. The dust collecting container 8 has a handle 20 to be described later at a position covered by the cover 7.

When the cover 7 is returned with the rotation shaft 2a shown in Fig. 2 as a fulcrum, the handle 20 is exposed. When the handle 20 is pulled out toward the upper side of the main body 1, the dust collecting container 8 can be detached from the main body 1.

As shown in Fig. 1, the main body 1 is an upper casing 2 constituting an upper portion of the main body 1 formed of a resin, and a lower casing 3 constituting a lower portion of the main body 1, and a front casing constituting a front portion of the main body 1. The body 4 is composed.

A hose body connection port 9 is provided in the front housing 4. The hose body connection port 9 can be connected to a hose body (not shown) having a hard extension tube having a suction member and a telescopic structure for sucking dust together with air, and having flexibility and a bellows shape. The composition of the soft tube.

Wheels 6a are provided on both sides of the lower casing 3, and small wheels 6b are provided on the bottom surface. By the wheel 6a and the small wheel 6b, the electric vacuum cleaner 100 can be freely moved by the hose body.

A body grip 5 is provided on the front side of the body 1. By holding this The body grip portion 5 can hold the body 1 away.

As shown in Fig. 2, the dust collecting container 8 is housed in the main body 1. The suction port 11 and the hose body connection port 9 which will be described later provided in the dust collecting case 10 constituting the dust collecting container 8 are connected in a state in which the dust collecting container 8 is housed.

The dust collecting container 8 encloses the dust separating unit 12. The dust separating unit 12 is a device that separates dust that is sucked together with air into dust and dust-removed air. Further, the dust collecting container 8 has a dust collecting portion 13. The dust collecting portion 13 is a device that collects dust.

In the dust box 10 constituting the dust collecting container 8, a lid body 17 that can be freely retracted is provided. The first screen 16 is attached to the lid body 17. Further, a screen cover 14 is provided on the lid body 17, and a communication port screen 15 is attached to the screen cover 14. Further, the configuration of the dust collecting container 8 will be described in more detail below.

An electric blower 18 is included behind the body 1. The electric blower 18 is a device that generates suction air that sucks air containing dust.

Further, a control board 19 is included in the lower rear portion of the main body 1. The control board 19 is a device that controls the operation of the electric blower 18 in accordance with the operation of a switch provided in an operation unit not shown. Further, although not shown, the main body 1 also includes a wire reel that winds up the holding power supply line.

(Composition of dust collecting container)

3 is an external perspective view of a dust collecting container of the electric vacuum cleaner according to Embodiment 1 of the present invention, and FIG. 4 is a perspective view showing a state in which the lid body of the dust collecting container is opened, and FIG. 5 is a part of the dust collecting box. A perspective view of an important portion of the dust collecting container is visible, and FIG. 6 is an external perspective view of the dust separating portion enclosed in the dust collecting container, and FIG. 7 is a side view of the appearance of the dust separating portion enclosed in the dust collecting container. Figure. Hereinafter, the configuration of the dust collecting container of the electric vacuum cleaner according to the first embodiment of the present invention will be described with reference to the third to seventh embodiments. In the respective drawings, the same reference numerals are given to the same or equivalent parts, and a part of the description is omitted.

As shown in FIGS. 3 and 4, the dust collecting container 8 is composed of a dust collecting case 10 formed by resin molding, a dust separating portion 12, and a lid body 17.

Since the dust collecting case 10 has the dust collecting portion 13 in which dust is accumulated inside, the inside thereof is formed of a resin having high transparency so as to be visually identifiable. The dust collecting case 10 is provided with a suction port 11 that communicates with the above-described hose body connecting port 9. The surface of the dust box 10 opposite to the suction port 11 is an opening.

The opening of the dust box 10 is closed by a cover 17 attached to the dust box 10 in a freely reversible manner. A pleated first sieve 16 is attached to the lid body 17. Further, the cover body 17 is provided with a screen cover 14 that is freely retractable. The screen cover 14 is attached between the dust separating portion 12 and the first screen 16 so as to cover the first screen 16.

The screen cover 14 has a communication port 29 for venting air from the exhaust hole 26 of the cylindrical portion 24 to be described later. A communication port filter 15 is attached to the communication port 29. The mesh of the communication port filter 15 is larger than the mesh of the first filter 16.

An arched handle 20 is provided on the dust box 10. A lock lever 21 is attached to the center of the handle 20. The locking rod 21 is pivotally supported by the locking rod return shaft 21a to be freely retracted in the hole (not shown).

The lock lever 21 biases the lid body 17 in the closing direction by an elastic means not shown. When the locking lever 21 is pressed against the urging force, the holding of the lid body 17 is released to open the lid body 17. Since the dust collecting portion 13 in which the dust is accumulated is present in the dust collecting case 10, the lid body 17 can be opened to discard the accumulated dust.

As shown in Fig. 5, the dust separating unit 12 shown in Figs. 6 and 7 is housed inside the dust collecting case 10. The dust separating unit 12 can be detached from the dust box 10. As shown in FIG. 4, by engaging the engaging piece 30 with the holding claw 31, the engaging hole 32 shown in FIG. 6 is engaged with the card not shown in the dust collecting case 10. Install on the claws.

As shown in FIG. 6, the dust separating unit 12 is composed of an inlet port communication portion 22, a spiral portion 23, and a cylindrical portion 24. The inlet and outlet communication portion 22, the spiral portion 23, and the cylindrical portion 24 are each formed by resin molding. In the embodiment of the present invention, the inlet port communication portion 22 and the screwing portion 23 are integrally formed, and the cylindrical portion 24 is a combination of separately formed components.

However, the configuration of the dust separating unit 12 is not limited thereto, and the inlet port communication portion 22, the spiral portion 23, and the cylindrical portion 24 may be formed separately, and the inlet port communication portion 22, the spiral portion 23, and the cylindrical portion 24 may be formed. It can also be integrated.

One end of the inlet-portion communication portion 22 is connected to the suction port 11 of the dust box 10, communicates with the hose body connection port 9 (see FIG. 2), and the other end communicates with the rotation portion 23.

The spiral portion 23 is provided with a cylindrical portion 24 having a taper therein. The cylindrical portion 24 has an intake port 25 and an exhaust hole 26. Since the cylindrical portion 24 has the taper as described above, it is relatively thin on the side of the intake port 25 and relatively thick on the side of the exhaust hole 26. Therefore, the area of the exhaust hole 26 is larger than the intake port 25.

The first opening 27 and the second opening 28 are provided in the outer wall 23a of the spiral portion. As shown in FIG. 7, the first opening 27 is provided close to the exhaust hole 26 of the cylindrical portion 24, and the second opening 28 is provided close to the intake port 25 of the cylindrical portion 24.

The area of the first opening 27 is larger than the second opening 28. Air circulation In the ventilation path, the first opening 27 is located upstream of the second opening 28. The first opening 27 and the second opening 28 communicate with the dust collecting portion 13 . The dust collecting portion 13 is disposed to leave the ventilation path.

The dust separated from the air in the dust separating unit 12 is discharged from the first opening 27 and the second opening 28 to the dust collecting portion 13. Since the dust collecting portion 13 is separated from the air passage, the dust discharged to the dust collecting portion 13 does not return to the air passage. In addition, the following description of the operation of the ventilation path and the dust is described in detail.

Then, according to Fig. 8 (a) and (b), the center of the shaft of the electric blower 18, the shaft center of the cylindrical portion as the center axis of rotation, the rotation direction of the electric blower 18, and the direction of rotation of the revolving portion 23 will be described. relationship. Fig. 8(a) is a schematic view schematically showing the axial direction of the rotating shaft and the cylindrical portion of the electric blower, and Fig. 8(b) is a schematic view showing the direction of rotation of the electric blower and the rotary portion in a simplified manner.

As shown in Fig. 8 (a) and (b), the center of the rotating shaft of the electric blower 18 is parallel to the axial center of the cylindrical portion 24 which is the central axis of the revolution. Further, the center of the rotating shaft of the electric blower 18 is disposed at a position shifted in the left-right direction and the vertical direction so as not to be coaxial with the axial center of the cylindrical portion 24 which is the central axis of the revolving.

When the center of the rotation shaft of the electric blower 18 and the shaft center of the cylindrical portion 24 as the central shaft of the rotation are coaxial, the linear suction force of the electric blower 18 is too strong, and the turning force cannot be applied to the revolving force of the rotation portion 23. It is impossible to strengthen the revolving force.

As shown in Fig. 8(b), the axial center of the cylindrical portion 24 as the central axis of the rotation is disposed in the vicinity of the outer circumference of the electric blower 18, whereby The rotational force of the electric blower 18 is applied to the revolving force of the revolving portion 23.

By strengthening the swirling force, the dust-containing air is rotated more strongly. Thereby, the centrifugal force acting on the dust contained in the air is also enhanced, and the separation performance of the dust can be improved.

(action)

Next, the operation of the electric vacuum cleaner according to the first embodiment of the present invention will be described in detail based on Figs. 11 and 12. Fig. 11 is a cross-sectional view showing the movement of dust and air in the electric vacuum cleaner according to the first embodiment of the present invention as seen from the side surface direction. Fig. 12 is a perspective sectional view showing an essential part of the movement of dust and air in the dust collecting container.

As shown in Figs. 11 and 12, the air containing dust is sucked as shown by A and passed through the suction port 11, and passes through the inlet port communication portion 22 constituting the dust separating portion 12 as shown by B, and as shown by C. The flow progresses to the spiral portion 23 constituting the dust separating portion 12. Since the path from the inlet port communication portion 22 to the swirling portion 23 is gradually narrowed, the flow velocity of the air is increased.

In the rotary portion 23, the inner surface of the spiral portion and the outer side of the cylindrical portion 24 are paths for swirling air, and the air containing dust is attracted to the spiral portion as shown by D to form a swirling flow. The swirling flow flows to the outside of the cylindrical portion 24 while being swirled toward the intake port 25 side as the upstream side of the exhaust hole 26 side as indicated by D.

The internal space of the cylindrical portion 24 is a ventilation path that flows from the intake port 25 to the exhaust hole 26. Since the outer side of the cylindrical portion 24 has no small holes or openings in the circumferential direction, the air swirled back in the spiral portion 23 is not directly attracted to the inner space of the cylindrical portion 24. Therefore, the flow of the swirling air is not disturbed and the cycle force is not easily lowered.

Centrifugal force acts on the air containing dust in the spiral part Then, the screw is rotated to push the dust toward the outer wall 23a of the spiral return portion. The first opening 27 is provided at a position close to the exhaust hole 26 of the cylindrical portion 24 on the outer wall 23a of the spiral portion, and the second opening 28 is provided at a position close to the intake port 25 of the cylindrical portion 24.

The dust that has been swirled back to the outer wall 23a of the spiral portion by the centrifugal force is discharged from the first opening 27 to the dust collecting portion 13 that communicates as in the case of X1 shown in Fig. 12 . As described above (paragraph 0033), the cylindrical portion 24 has a taper shape and is relatively thin on the side of the intake port 25, and is relatively thick on the side of the exhaust hole 26.

Therefore, the space between the outer wall 23a and the outer wall 23a is narrower on the side of the exhaust hole 26, so the flow velocity in the vicinity of the exhaust hole 26 is the fastest. Therefore, the centrifugal force acting on the dust contained in the air is also the largest, and therefore most of the dust is discharged from the first opening 27.

In order to discharge large and heavy dust like X1, the opening area of the first opening 27 at the position where the centrifugal force is the largest is larger than the second opening 28.

When there is no dust discharged from the first opening, the second opening 28 provided in the intake port 25 close to the cylindrical portion 24 is discharged as X2 shown in Fig. 12.

As described above, the dust is separated from the dust-containing air by the centrifugal force, and is discharged from the first opening 27 and the second opening 28 to the dust collecting portion 13. Therefore, the air flowing after the second opening 28 becomes The dust-containing air is sent to the suction port 25 of the cylindrical portion 24 as shown in Fig. 12E.

As shown in Fig. 7, the intake port 25 of the cylindrical portion 24 is located downstream of the starting point of the second opening 28. Therefore, as described above, the dust is separated from the first opening 27 and the second opening 28 before the air is sent to the intake port 25 of the cylindrical portion 24, so that the dust-free air is sent to the circle. The suction port 25 of the tubular portion 24.

In the embodiment of the present invention, an example in which two openings are provided in the outer wall 23a of the spiral portion will be described. However, the number of openings provided in the outer wall 23a of the spiral portion may be plural. Therefore, it is not limited to two, and for example, three are provided, which contributes to the discharge of dust.

The discharged dust is accumulated in the dust collecting portion 13. However, as shown in Fig. 9, the flow of the air X5 is rotated by the dust X5. When it is rotated in this manner, the minute slit 37 that is sucked into between the dust collecting case 10 and the swirling portion 23 may return to the air passage again.

Therefore, the rib a33 for preventing dust from flowing back is provided on the dust collecting box 10 side, and the rib b34 for preventing dust from flowing back is provided on the side of the turning portion 23, thereby preventing the dust X5 from returning to the air passage again. Further, the rib portion referred to here is a plate-like projecting structure having a thickness of several millimeters.

Further, in the embodiment of the present invention, the rib portion a33 and the rib portion b34 for preventing backflow are provided in the dust collecting case 10 and the spiral return portion 23, respectively, but the rib portion may be provided on either side to prevent the dust X5 from returning again. Ventilation path.

In order to compress the dust accumulated in the dust collecting portion 13, the dust collecting portion 13 is sucked by the electric blower 18. As shown in Fig. 10, a ventilated dust compression opening 35 is provided in the screen cover 14. In order to increase the force of the compressed dust, the center of the rotating shaft of the electric blower 18 is disposed within the range of the dust compression opening portion 35 so as to obtain the linear attraction force of the electric blower 18.

The second filter screen 36 is provided in the dust compression opening portion 35, and even if the suction blow G is generated by the electric blower 18, the first filter screen 16 is protected so that the dust filter X4 does not block the first mesh screen 16 having a fine mesh. The mesh of the second filter is thicker than the first filter 16, so that the mesh of the second filter is not easily plugged.

The air sent to the intake port 25 of the cylindrical portion 24 passes through the inside of the cylindrical portion 24 to the exhaust hole 26 of the cylindrical portion 24 as indicated by F in Fig. 11 . Further, the communication port 15 is provided through the communication port 15 of the communication port 29 of the screen cover 14 provided on the downstream side of the exhaust hole 26, and reaches the electric blower 18 through the first filter 16.

The communication port filter 15 is a filter for preventing accidents. The first sieve 16 is a device for collecting fine dust, and has a pleat shape and a small mesh. Therefore, when the dust adheres, the mesh may be clogged, and maintenance of the first filter 16 is necessary. Since the first screen 16 is pleated, its maintenance is not easy.

Therefore, it is disposed upstream of the communication port filter 15 so that if the dust that has not been discharged from the first opening 27 and the second opening 28 to the dust collecting portion 13 passes through the intake port 25 of the cylindrical portion 24, It is captured by the communication port filter 15 before reaching the first filter screen 16.

Since the communication port filter 15 is provided in the flat screen cover 14 as shown in Fig. 4, dust is easily removed.

After passing through the communication port filter 15 and the first filter screen 16, the air is blown by the electric blower 18, and the discharged air is discharged to the outside of the main body 1 from the main body exhaust port not shown.

As described above, a plurality of openings such as the first opening and the second opening are provided in the spiral return portion, and dust is accumulated in the dust collecting portion that is separated from the air passage, so that the sucked air does not pass through the accumulated dust. Therefore, it is possible to suppress a decrease in the attractive force due to an increase in the amount of accumulated dust.

In addition, the direction of the rotation axis of the electric blower is parallel to the axial direction of the cylindrical portion, and the rotation portion rotates the air around the outer circumference of the cylindrical portion, so that the direction in which the air is rotated back and the rotation direction of the electric blower are opposite to each other. Direction, therefore, the centrifugal force generated by the rotation of the electric blower is applied to the centrifugal force of the air swirled in the opposite direction of rotation. Therefore, the performance of separating dust from the dust-containing air can be improved.

Further, since there is no small hole or opening in the circumferential direction of the cylindrical portion, the air swirled in the spiral portion is not directly attracted to the air passage in the internal space of the cylindrical portion, and does not disturb the flow of the swirling air. It is not easy to reduce the cycle force.

Further, since the rotating shaft of the electric blower is disposed within the range of the dust compression opening, the linear attraction force of the electric blower is obtained, and the force for compressing the dust accumulated in the dust collecting portion can be improved.

Further, since a plurality of openings such as the first opening and the second opening are provided in the spiral return portion, dust is accumulated in the dust collecting portion that is separated from the air passage, so that dust reaching the second filter and the first filter is hardly attracted. The air does not pass through the accumulated dust. Therefore, the mesh of the first filter is not clogged in the container, so that the maintenance frequency of the first filter is reduced, and the decrease in the suction force due to the increase in the amount of accumulated dust can be suppressed.

When the dust is not discharged from the plurality of openings such as the first opening and the second opening to allow the dust to reach the filter screen, the flat second filter is placed upstream, and the dust can be easily removed and easily maintain.

Further, since the ribs for preventing the backflow of the dust are provided in the dust collecting case or the rotary portion or both, the dust discharged from the air passage is not returned to the air passage, and the dust can be stably accumulated in the dust collecting portion.

In addition, since the sucked air does not pass through the accumulated dust, the odor of the dust does not easily affect the attracted air, and the exhaust can be suppressed to the present. The exhaust of the air outside the body is stinky.

8‧‧‧dust container

10‧‧‧ dust box

12‧‧‧dust separation department

14‧‧‧Mesh cover

15‧‧‧Connected port filter

16‧‧‧1st filter

17‧‧‧ Cover

20‧‧‧Hands

21‧‧‧Locking rod

26‧‧‧ venting holes

27‧‧‧1st opening

29‧‧‧Connecting port

30‧‧‧Clocks

31‧‧‧ holding claws

Claims (8)

An electric vacuum cleaner comprising: an electric blower disposed in the body; a dust collecting container that collects and accumulates dust contained in air sucked by the electric blower; wherein the dust collecting container is composed of the following: a suction port; a dust box having a dust collecting portion for collecting dust and opening to face opposite to the suction port; the dust separating portion separating dust-containing air into dust and dust-removing air; and the cover body being freely repositioned The dust collecting box is configured to close the opening of the dust box; the dust separating portion is configured by: an inlet port communicating portion communicating with the suction port; and a screwing portion communicating with the inlet port communicating portion to swirl the dust-containing air The air is separated by centrifugal separation into dust and dust; the cylindrical portion passes through the dust-removing air, and has an intake port and an exhaust port; and a plurality of openings are provided on the side surface of the spiral portion, from the spiral portion The inside of the dust collecting portion is connected to the dust collecting portion; the direction of the rotating shaft of the electric blower is parallel to the axial direction of the cylindrical portion; the rotating portion rotates the air around the outer portion of the cylindrical portion , So that the cycle unit The direction in which the air is swirled back and the direction of rotation of the electric blower are opposite directions of rotation. An electric vacuum cleaner comprising: an electric blower disposed in the body; a dust collecting container that collects and accumulates dust contained in air sucked by the electric blower; wherein the dust collecting container is composed of the following: a suction port; a dust box having a dust collecting portion for collecting dust and opening to face opposite to the suction port; the dust separating portion separating dust-containing air into dust and dust-removing air; and the cover body being freely repositioned The dust collecting box is configured to close the opening of the dust box; the dust separating portion is configured by: an inlet port communicating portion communicating with the suction port; and a screwing portion communicating with the inlet port communicating portion to swirl the dust-containing air The air is centrifugally separated into dust and dust, and the cylindrical portion protrudes in a cylindrical shape toward the inner side of the spiral portion, and an intake port for sucking air in the spiral portion is provided at the front end, and is disposed at the bottom end. An exhaust port for exhausting the inhaled air; and a plurality of openings provided on the side surface of the spiral return portion, and communicating from the inside of the spiral return portion to the dust collecting portion; the openings are configured to include a first opening disposed adjacent to the exhaust port; and a second opening disposed adjacent to the intake port; the second opening being closer to the row than the intake port in an axial direction of the cylindrical portion Opening at the side of the port. The electric vacuum cleaner according to claim 1, wherein there is no small hole or opening in the circumferential direction of the cylindrical portion. The electric vacuum cleaner according to claim 1, wherein the direction of the rotation axis of the electric blower and the axial direction of the cylindrical portion are not coaxial. The electric vacuum cleaner according to claim 2, wherein the opening area of the second opening is smaller than the first opening. The electric vacuum cleaner according to any one of the first to fifth aspects of the present invention, wherein the dust collecting case, the revolving portion, or both are provided with a rib for preventing dust from coming back. The electric vacuum cleaner according to any one of claims 1 to 5, wherein the cover body includes a first filter mesh; and a filter cover covering the first filter mesh; the filter cover is assembled for compression The dust in the dust collecting portion has a dust compression opening through which the sucked air passes, and the dust compression opening has a second screen which is thicker than the first filter. The electric vacuum cleaner of claim 7, wherein the rotating shaft of the electric blower is disposed within a range of the dust compression opening.