JP5104989B1 - Cyclone separation device and vacuum cleaner using the same - Google Patents

Abstract

A cyclone separation device and the like that can reduce the product size without weakening the momentum of separated garbage.
A swirl chamber having a side surface formed in a cylindrical shape so as to be discharged after swirling air, and having an opening for separating dust contained in the flowing air from the air. And the outer periphery of the swirl chamber so as to suppress the generation of vortex by the air flowing from the swirl chamber through the opening so as to accumulate the dust separated from the air by the swirl chamber. And a dust collection chamber formed along at least a part of the surface.
[Selection] Figure 11

Description

  The present invention relates to a cyclone separator and a vacuum cleaner using the same.

  As a cyclone separator, a device having a second swirl chamber connected to the outside of the first swirl chamber has been proposed. In the cyclone separator, a primary vortex flow is generated in the first swirl chamber. A secondary vortex is generated in the second separation chamber. Relatively large waste is separated in the second swirl chamber by centrifugal force due to the secondary vortex. Relatively small dust is separated in the first swirl chamber by centrifugal force due to the primary vortex (see, for example, Patent Document 1).

  However, in the cyclone separator, the secondary vortex flows as an air flow and returns to the first swirl chamber. The airflow weakens the momentum when relatively large garbage goes to the second separation chamber. For this reason, relatively large garbage cannot be separated efficiently.

  On the other hand, a cyclone separation device including a dust collection chamber formed so as to extend in a direction away from the swirl chamber has been proposed. According to the cyclone separator, it is possible to suppress the airflow from flowing into the dust collection chamber. For this reason, relatively large waste can be efficiently blown into the dust collection chamber by the centrifugal force in the swirl chamber.

Japanese translation of PCT publication No. 2002-503541 JP 2003-310506 A

  However, the dust collection chamber of the cyclone separator is formed to extend in a direction away from the swirl chamber. For this reason, the product size of a cyclone separator increases.

  The present invention has been made to solve the above-described problems, and an object of the present invention is to provide a cyclone separating apparatus and the like that can reduce the product size without weakening the momentum of separated garbage.

The cyclone separation device according to the present invention is formed in a cylindrical shape so that the air that has flowed in is discharged after swirling, and a side surface on which an opening for separating the dust contained in the air that has flowed from the air is formed. And a swirl chamber having a vortex flow generated by the swirl chamber and the air that is disposed outside the opening so as to accumulate dust separated from the air by the swirl chamber, and flows from the swirl chamber through the opening. A dust collecting chamber formed along at least a part of the outer peripheral surface of the swirl chamber so that the opening has an upstream end on the downstream side with respect to the swirling direction of air in the swirl chamber The dust collecting chamber is formed so as to be separated from the central axis of the swirl chamber as well as the side end portion, and the dust collecting chamber surrounds the entire circumference of the swirl chamber .

  The vacuum cleaner according to the present invention includes a blower for causing air to flow into the cyclone separator.

  According to the present invention, the product size can be reduced without weakening the momentum of separated garbage.

It is a perspective view of the electric vacuum cleaner in Embodiment 1 of this invention. It is a perspective view of the main body and dust collection unit of the vacuum cleaner in Embodiment 1 of this invention. It is a top view of the main body and dust collection unit of the vacuum cleaner in Embodiment 1 of this invention. It is a perspective view of the main body of the vacuum cleaner in Embodiment 1 of this invention. It is a top view of the main body of the vacuum cleaner in Embodiment 1 of this invention. It is sectional drawing in the AA of FIG. It is a perspective view of the dust collection unit of the electric vacuum cleaner in Embodiment 1 of this invention. It is a side view of the dust collection unit of the vacuum cleaner in Embodiment 1 of this invention. It is a top view of the dust collection unit of the vacuum cleaner in Embodiment 1 of this invention. It is sectional drawing in the BB line of FIG. It is sectional drawing in the CC line of FIG. It is sectional drawing in the DD line | wire of FIG. It is sectional drawing in the EE line | wire of FIG. It is sectional drawing in the FF line of FIG. It is a longitudinal cross-sectional view of the main body and dust collection unit of the vacuum cleaner in Embodiment 1 of this invention. It is a perspective view of the dust collection unit of the vacuum cleaner in Embodiment 2 of this invention. It is a side view of the dust collection unit of the vacuum cleaner in Embodiment 2 of this invention. It is a top view of the dust collection unit of the vacuum cleaner in Embodiment 2 of this invention. It is sectional drawing in the GG line of FIG. It is sectional drawing in the HH line | wire of FIG. It is sectional drawing in the II line | wire of FIG. It is sectional drawing in the JJ line of FIG. It is sectional drawing in the KK line | wire of FIG. It is sectional drawing in the LL line of FIG. FIG. 25 is a view corresponding to FIG. 24 in Embodiment 3 of the present invention. FIG. 25 is a view corresponding to FIG. 24 in Embodiment 4 of the present invention.

  A mode for carrying out the invention will be described with reference to the accompanying drawings. In addition, in each figure, the same code | symbol is attached | subjected to the part which is the same or it corresponds, The duplication description is simplified or abbreviate | omitted suitably.

Embodiment 1 FIG.
FIG. 1 is a perspective view of the electric vacuum cleaner according to Embodiment 1 of the present invention. FIG. 2 is a perspective view of the main body and dust collection unit of the electric vacuum cleaner according to Embodiment 1 of the present invention. FIG. 3 is a plan view of the main body and dust collection unit of the electric vacuum cleaner according to Embodiment 1 of the present invention.

  In FIG. 1, 1 is a vacuum cleaner. The electric vacuum cleaner 1 includes a vacuum cleaner body 2. As shown in FIGS. 1 to 3, wheels 3 are provided on both sides of the cleaner body 2. Inside the cleaner body 2, a cord reel portion (not shown) is provided. As shown in FIG. 1, the power cord 4 is wound around the cord reel portion. A dust collection unit 5 is detachably attached to the upper portion of the cleaner body 2.

  As shown in FIG. 1, a hose connection port 6 is provided at the front portion of the cleaner body 2. One end of a suction hose 7 is connected to the hose connection port 6. The suction hose 7 is formed in a bellows shape so as to have flexibility. One end of the connection pipe 8 is connected to the other end of the suction hose 7. The connection pipe 8 is formed to be bent slightly in the middle. The connection pipe 8 is provided with a handle 9. The handle 9 is provided with an operation switch 10. One end of the suction pipe 11 is connected to the other end of the connection pipe 8. The suction pipe 11 is formed in a straight cylindrical shape. The other end of the suction pipe 11 is connected to the center in the longitudinal direction of the suction port body 12.

Next, the cleaner body 2 will be described with reference to FIGS.
FIG. 4 is a perspective view of the main body of the electric vacuum cleaner according to Embodiment 1 of the present invention. FIG. 5 is a plan view of the main body of the electric vacuum cleaner according to Embodiment 1 of the present invention. 6 is a cross-sectional view taken along line AA in FIG.

  As shown in FIGS. 4 and 5, the cleaner body 2 includes an electric blower housing unit 2 a and a dust collection unit housing 2 b. The electric blower housing unit 2a opens obliquely in the forward and upward direction. The dust collection unit accommodation portion 2b is disposed obliquely so as to close the opening of the electric blower accommodation unit 2a. A main body side outlet 13 is formed on one side of the upper portion of the dust collection unit housing 2b. Above the main body side outlet 13, a main body side inlet 14 is formed in the center of the upper part of the dust collection unit housing 2 b.

  As shown in FIG. 6, the electric blower 15 is provided in the lower part in the electric blower accommodation unit 2a. A suction air passage 16 is formed between the hose connection port 6 and the main body side outlet 13 in front of the electric blower 15. An exhaust air passage 17 is formed between the main body side inlet 14 and the electric blower 15 behind the intake air passage 16.

Next, the dust collection unit 5 will be described with reference to FIGS.
FIG. 7 is a perspective view of the dust collection unit of the electric vacuum cleaner according to Embodiment 1 of the present invention. FIG. 8 is a side view of the dust collection unit of the electric vacuum cleaner according to Embodiment 1 of the present invention. FIG. 9 is a plan view of the dust collection unit of the electric vacuum cleaner according to Embodiment 1 of the present invention. 10 is a cross-sectional view taken along line BB in FIG. 11 is a cross-sectional view taken along the line CC of FIG. 12 is a cross-sectional view taken along the line DD of FIG. 13 is a cross-sectional view taken along line EE in FIG. 14 is a cross-sectional view taken along line FF in FIG.

  As shown in FIGS. 7 to 9, the dust collection unit 5 is formed in a substantially cylindrical shape. The upper part 5a and the lower part 5b of the dust collection unit 5 are detachably formed. A unit side inlet 18 is formed on one side of the upper portion 5a of the dust collection unit 5. Above the unit side inlet 18, a unit side outlet 19 is formed at the center of the upper part 5 a of the dust collection unit 5. The unit side inlet 18 and the unit side outlet 19 open in the same direction.

  As shown in FIGS. 10 and 11, the swirl chamber 20 is connected to the unit side inlet 18. The upper part of the swirl chamber 20 consists of a cylindrical part 20a. The lower part of the swirl chamber 20 is composed of a conical part 20b. A zero-order opening 21 is formed in a part of the side surface of the cylindrical portion 20a. The zero-order opening 21 is formed below the unit side inlet 18.

  A zero-order dust collection chamber 22 is formed outside the zero-order opening 21. The zero-order dust collection chamber 22 surrounds the entire circumference of the swirl chamber 20. That is, the zero-order dust collection chamber 22 is formed so as to extend downward from the zero-order opening 21.

  A primary opening 23 is formed at the lower end of the conical portion 20b. A primary dust collection chamber 24 is formed below the primary opening 23. The primary dust collection chamber 24 is partitioned from the zero-order dust collection chamber 22 by a partition wall 25. The primary dust collection chamber 24 is integrally formed as the lower portion 5 b of the dust collection unit 5 together with the lower portion of the zero-order dust collection chamber 22.

  One side of the discharge pipe 26 is disposed at the center of the cylindrical portion 20a. A discharge port 27 is formed at one end of the discharge pipe 26. A unit side outlet 19 is formed at the other end of the discharge pipe 26.

  As shown in FIG. 12, the unit side inlet 18 is connected to the swirl chamber 20 from the tangential direction of the swirl chamber 20.

  As shown in FIGS. 13 and 14, the swirl chamber 20, the zero-order dust collection chamber 22, the primary dust collection chamber 24, and the discharge pipe 26 are formed substantially concentrically. The swirl chamber 20, the zero-order dust collection chamber 22, the primary dust collection chamber 24, and the discharge pipe 26 are each formed to have a substantially constant curvature.

Next, the positional relationship between the zero-order opening 21 and the central axis of the swirl chamber 20 will be described with reference to FIGS. 11 and 13.

  In FIG. 11, a is the distance between the lower end portion of the zero-order opening 21 and the central axis of the swirl chamber 20. b is the distance between the upper edge of the zero-order opening 21 and the central axis of the swirl chamber 20. In the present embodiment, the 0th-order opening 21 is formed so that the distance a and the distance b substantially coincide with each other.

  In FIG. 13, a is the distance between the side end of the zero-order opening 21 in the direction of the unit side inlet 18 and the central axis of the swirl chamber 20. d is the distance between the side end of the swirl chamber 20 opposite to the unit side inlet 18 and the central axis of the swirl chamber 20. In the present embodiment, the 0th-order opening 21 is formed so that the distance c and the distance d are substantially the same.

Next, the attached state of the dust collection unit 5 will be described with reference to FIG.
FIG. 15 is a longitudinal sectional view of the main body and dust collection unit of the electric vacuum cleaner according to Embodiment 1 of the present invention.

  As shown in FIG. 15, the dust collection unit 5 is placed in the dust collection unit housing portion 2 b of the cleaner body 2. At this time, the unit side inlet 18 is arranged to face the main body side outlet 13. The unit side outlet 19 is disposed so as to face the main body side inlet 14.

  Next, operation | movement of the vacuum cleaner 1 is demonstrated using FIG. 1 and FIG.

  In FIG. 1, first, the power cord 4 is connected to an external power source. With this connection, the vacuum cleaner 1 is energized. In this state, the operation of the vacuum cleaner 1 is controlled by operating the operation switch 10.

  At this time, when the electric blower 15 (not shown in FIG. 1) is driven, suction air is generated. Dust and dust air on the floor is sucked from the suction port body 12 by the suction air. The dust air or the like flows into the cleaner body 2 through the suction pipe 11, the connection pipe 8, and the suction hose 7. That is, the suction port body 12, the suction pipe 11, the connection pipe 8, and the suction hose 7 function as a part of a suction path for allowing dust-containing air or the like to flow from the outside to the inside of the cleaner body 2.

  In FIG. 15, the dust air or the like reaches the main body side outlet 13 via the intake air passage 16. Thereafter, the dust air or the like moves to the unit side inlet 18. The dust-containing air or the like flows in a substantially tangential direction with respect to the inner wall of the swirl chamber 20. As a result, the dust air or the like becomes a swirling airflow. That is, the dust air or the like forms a forced vortex region near the turning center axis and a free vortex region on the outer peripheral side thereof. The dust air or the like flows downward due to the path structure and gravity.

  At this time, a relatively bulky waste (garbage A) such as large fiber waste or hair is pressed against the inner wall of the swirl chamber 20. For this reason, the garbage A is separated from the swirling airflow by the zero-order opening 21. That is, the dust A moves into the zero-order dust collection chamber 22 through the zero-order opening 21. At this time, the dust A moves smoothly along the shape of the zero-order dust collection chamber 22 without abruptly changing the trajectory. Thereafter, the garbage A moves to the back of the lower part of the zero-order dust collection chamber 22 without weakening the momentum.

  On the other hand, the dust that has not flowed into the zero-order dust collection chamber 22 moves under the swirl chamber 20 on the swirling airflow descending the swirl chamber 20. Due to the movement, relatively small waste (trash B) such as sand waste and fine fiber waste passes through the primary opening 23. Thereafter, the garbage B is captured in the primary dust collection chamber 24.

  The swirling airflow from which the garbage A and the garbage B are removed is reversed below the swirling chamber 20. The airflow rises along the central axis of the swirl chamber 20. Thereafter, the airflow passes through the discharge port 27. Thereafter, the airflow reaches the unit side outlet 19 via the discharge pipe 26.

  Thereafter, the airflow passes through the main body side inlet 14 and moves to the exhaust airflow path 17 side. Thereafter, the airflow is sucked into the electric blower 15. Thereafter, the airflow is discharged to the electric blower 15. Thereafter, the air is discharged from an exhaust port (not shown) of the cleaner body 2.

  The dust accumulated in the dust collection unit 5 is easily discarded by removing the lower part 5b from the upper part 5a of the dust collection unit 5.

  According to the first embodiment described above, the zero dust collection chamber 22 is formed along the outer peripheral surface of the swirl chamber 20. For this reason, no vortex is generated in the zero-order dust collection chamber 22. In addition, no dead space is formed in the zero-order dust collection chamber 22. As a result, the limited volume of the zero-order dust collection chamber 22 can be used effectively. Accordingly, with respect to the product size of the dust collection unit 5, the dimension in the direction perpendicular to the swirl axis of air in the swirl chamber 20 can be reduced. Accordingly, the product size of the vacuum cleaner 1 can be reduced.

  Note that the zero-order dust collection chamber 22 may be formed so as to cover at least a part of the outer peripheral surface of the swirl chamber 20. In this case, the dimension in the direction perpendicular to the swirl axis of air in the swirl chamber 20 can be further reduced. As a result, the product size of the dust collection unit 5 as a whole can be further reduced.

  Further, the zero-order opening 21 is formed such that the downstream end with respect to the swirling direction of the air in the swirl chamber 20 is separated from the central axis of the swirl chamber 20 in the same manner as the upstream end. The zero-order opening 21 is formed such that the downstream end of the air in the swirl chamber 20 with respect to the swirl axis direction is separated from the central axis of the swirl chamber 20 in the same manner as the upstream end. For this reason, the swirl airflow in the swirl chamber 20 hardly flows into the zero-order dust collection chamber 22. In other words, the airflow that flows into the zero-order dust collecting chamber 22 hardly returns to the swirl chamber 20. For this reason, the momentum when the garbage A is blown into the zero-order dust collection chamber 22 is hardly weakened. That is, the dust A can be reliably captured by the zero-order dust collection chamber 22.

  Note that the zero-order opening 21 may be formed such that the downstream end in the swirl direction of the air in the swirl chamber 20 is farther from the central axis of the swirl chamber 20 than the upstream end. Further, the zero-order opening 21 may be formed such that the downstream end in the swirl axis direction of air in the swirl chamber 20 is farther from the central axis of the swirl chamber 20 than the upstream end. In this case, the inflow of airflow into the zero-order dust collection chamber 22 can be more reliably suppressed. For this reason, the dust A can be more reliably captured by the zero-order dust collection chamber 22.

  The zero-order dust collection chamber 22 is formed so as to extend from the zero-order opening 21 along the swirling direction of air in the swirl chamber 20. For this reason, the momentum when the garbage A is blown into the zero-order dust collection chamber 22 is hardly weakened. That is, the dust A can be reliably captured by the zero-order dust collection chamber 22.

  The outer wall of the swirl chamber 20 and the inner wall of the zero-order dust collection chamber 22 are shared by the partition wall 25. For this reason, the dust collection unit 5 can be made smaller.

  Note that the dust collection unit 5 can be reduced to some extent without having to share the outer wall of the swirl chamber 20 and the inner wall of the zero-order dust collection chamber 22.

  Even when the primary dust collection chamber 24 is not provided, no dead space is formed in the zero-order dust collection chamber 22 as in the first embodiment. For this reason, the limited volume of the zero-order dust collection chamber 22 can be used effectively.

Embodiment 2. FIG.
FIG. 16 is a perspective view of the dust collection unit of the electric vacuum cleaner according to Embodiment 2 of the present invention. FIG. 17 is a side view of the dust collection unit of the electric vacuum cleaner according to Embodiment 2 of the present invention. FIG. 18 is a plan view of the dust collection unit of the electric vacuum cleaner according to Embodiment 2 of the present invention. 19 is a cross-sectional view taken along line GG in FIG. 20 is a cross-sectional view taken along line HH in FIG. 21 is a cross-sectional view taken along the line II of FIG. 22 is a cross-sectional view taken along the line JJ of FIG. 23 is a cross-sectional view taken along line KK in FIG. 24 is a cross-sectional view taken along line LL in FIG. In addition, the same code | symbol is attached | subjected to Embodiment 1 and an equivalent part, and description is abbreviate | omitted.

  As shown in FIG. 19, in the second embodiment, the axial upper wall surface of the zero-order dust collection chamber 22 is formed so as to descend in a spiral shape with the vicinity of the upper end portion of the zero-order opening 21 as a vertex. The axial lower side wall surface of the zero-order dust collection chamber 22 is formed so as to descend in a spiral shape with the vicinity of the lower point in the axial direction of the zero-order opening 21 as a vertex.

  As shown in FIG. 19, when viewed from the direction perpendicular to the axis of the swirl chamber 20, the zero-order dust collection chamber 22 is formed such that the width on the downstream side of the internal space is wider than the width on the upstream side. .

  As shown in FIG. 23, when viewed from the axial direction of the swirl chamber 20, the zero-order dust collection chamber 22 is formed such that the flow path width on the downstream side of the internal space is wider than the width on the upstream side. .

  As shown in FIGS. 22 to 24, a dust trap 28 is provided in the zero-order dust collection chamber 22. The dust catcher 28 is formed to extend in substantially the same direction as the axial direction of the swirl chamber 20 so as to partition the space of the zero-order dust collection chamber 22.

  In the cyclone separator, as shown in FIG. 22, the garbage A jumps out to the zero-order dust collection chamber 22 by the centrifugal force of the swirl chamber 20. The garbage A also receives a force in the swirling direction of the swirling airflow in the swirling chamber 20. For this reason, the force in the direction of arrow X is received in the zero-order dust collection chamber 22. Accordingly, the dust A is finally pressed against the dust catcher 28 without losing momentum on the way. The dust A is accumulated from the back of the zero-order dust collection chamber 22 with the dust capturing body 28 as a base point.

  According to the second embodiment described above, the dust A can be accumulated from the back of the zero-order dust collection chamber 22 with the dust catching body 28 as a base point. The zero-order dust collection chamber 22 may be formed so as to cover a part of the swirl chamber 20. In this case, in the zero-order dust collection chamber 22, the back surface in the air swirling direction functions as a dust catcher 28. That is, the dust A can be accumulated on the back surface in the air turning direction.

  In addition, the upper axial wall surface of the zero-order dust collection chamber 22 is formed so as to descend spirally from above the zero-order opening 21. For this reason, it is possible to forcibly guide the dust A flowing in from the zero-order opening 21 downward in the zero-order dust collection chamber 22. That is, the dust A can be accumulated from the bottom side of the zero-order dust collection chamber 22. Therefore, the limited volume of the zero-order dust collection chamber 22 can be used more effectively.

  Further, the axial lower wall surface of the zero-order dust collecting chamber 22 is formed so as to descend in a spiral shape from below the zero-order opening 21. For this reason, the dust A flowing in from the 0th-order opening 21 can be guided downward by the gravity in the 0th-order dust collection chamber 22. That is, the dust A can be accumulated from the bottom side of the zero-order dust collection chamber 22. Therefore, the limited volume of the zero-order dust collection chamber 22 can be used more effectively.

  Further, when viewed from the direction perpendicular to the axis of the swirl chamber 20, the zero-order dust collection chamber 22 is formed such that the width on the downstream side of the internal space is wider than the width on the upstream side. When viewed from the axial direction of the swirl chamber 20, the zero-order dust collection chamber 22 is formed such that the flow path width on the downstream side of the internal space is wider than the width on the upstream side. For this reason, it is possible to prevent the dust A from further weakening due to friction with the inner wall of the zero-order dust collection chamber 22 on the downstream side where the momentum of the dust A is weakened. That is, the garbage A can be accumulated from the back side of the zero-order dust collection chamber 22. Therefore, the limited volume of the zero-order dust collection chamber 22 can be used more effectively.

Embodiment 3 FIG.
FIG. 25 is a view corresponding to FIG. 24 in Embodiment 3 of the present invention. In addition, the same code | symbol is attached | subjected to the part which is the same as that of Embodiment 2, or an equivalent, and description is abbreviate | omitted.

  A dust trap 28 is provided in the zero-order dust collection chamber 22 of the second embodiment. On the other hand, a plate 29 is provided in the zero-order dust collection chamber 22 of the third embodiment. The plate 29 is disposed so as to protrude from the bottom surface of the zero-order dust collection chamber 22 to a position lower than the top surface of the zero-order dust collection chamber 22. The plate 29 performs the same function as the dust catcher 28.

  According to the third embodiment described above, the same effect as in the second embodiment can be obtained.

Embodiment 4 FIG.
FIG. 26 is a view corresponding to FIG. 24 in Embodiment 4 of the present invention. In addition, the same code | symbol is attached | subjected to the part which is the same as that of Embodiment 2, or an equivalent, and description is abbreviate | omitted.

  A dust trap 28 is provided in the zero-order dust collection chamber 22 of the second embodiment. On the other hand, ribs 30 are provided in the zero-order dust collection chamber 22 of the fourth embodiment. The rib 30 is disposed so as to protrude from the bottom surface of the zero-order dust collection chamber 22 in a state where the inner wall and the outer wall of the zero-order dust collection chamber 22 are not in contact with each other. The rib 30 performs the same function as the dust catcher 28.

  According to the fourth embodiment described above, the same effect as in the second embodiment can be obtained.

  In addition, you may apply the dust collection unit 5 of this Embodiment 1-4 to things other than the canister type vacuum cleaner 1. FIG.

DESCRIPTION OF SYMBOLS 1 Electric vacuum cleaner 2 Vacuum cleaner main body 2a Electric blower accommodation unit 2b Dust collection unit accommodation part 3 Wheel 4 Power cord 5 Dust collection unit 6 Hose connection port 7 Suction hose 8 Connection pipe 9 Handle 10 Operation switch 11 Suction pipe 12 Suction port body DESCRIPTION OF SYMBOLS 13 Main body side outlet 14 Main body side inlet 15 Electric blower 16 Intake air path 17 Exhaust air path 18 Unit side inlet 19 Unit side outlet 20 Swivel chamber 20a Cylindrical part 20b Conical part 21 0th order opening part 22 0th order dust collection Chamber 23 Primary opening 24 Primary dust collection chamber 25 Bulkhead 26 Discharge pipe 27 Discharge port 28 Garbage trap 29 Plate 30 Rib

Claims (8)

A swirl chamber having a side surface that is formed in a cylindrical shape so that the air that has flowed is discharged after swirling and that has an opening for separating the dust contained in the air that has flown from the air; and
The swirl chamber is disposed outside the opening so as to accumulate dust separated from the air by the swirl chamber, and the swirl is performed so as to suppress the generation of vortex by the air flowing from the swirl chamber through the opening. A dust collection chamber formed along at least a part of the outer peripheral surface of the chamber;
Equipped with a,
The opening is formed such that the downstream end with respect to the swirling direction of the air in the swirl chamber is separated from the central axis of the swirl chamber in the same manner as the upstream end.
The cyclone separating apparatus that surrounds the dust collection chamber along the entire circumference of the swirl chamber . The cyclone separator according to claim 1, wherein the dust collection chamber is formed so as to extend from the opening along a swirl direction of air in the swirl chamber. The dust collecting chamber is
The air in the swirl chamber when said swirl chamber is arranged to flow while rotating toward the top to bottom, lowered from above the front Symbol opening spirally in the turning direction of the air in the whirling chamber An upstream side wall surface formed as follows :
An outer wall surface surrounding the swirl chamber laterally outside the opening;
Cyclonic separating apparatus as claimed in claim 1 or claim 2 comprising a. The dust collecting chamber is
The air in the swirl chamber when said swirl chamber is arranged to flow while rotating toward the top to bottom, lowered from the lower front Symbol opening spirally in the turning direction of the air in the whirling chamber A downstream side wall surface formed as follows :
An outer wall surface surrounding the swirl chamber laterally outside the opening;
Cyclonic separating apparatus as claimed in any of claims 1 to 3 comprising a. The dust collection chamber has an internal space whose width on the downstream side is wider than the width on the upstream side with respect to the swirl direction of air in the swirl chamber when viewed from the swirl axis direction of air in the swirl chamber. The cyclone separator according to any one of claims 1 to 4 . The dust collection chamber has an internal space whose width on the downstream side is wider than the width on the upstream side with respect to the direction of the swirl axis of air in the swirl chamber when viewed from the vertical direction of the swirl axis of air in the swirl chamber. The cyclone separator according to any one of claims 1 to 5 , which has The cyclone separator according to any one of claims 1 to 6 , wherein the dust collection chamber has an inner wall formed by an outer wall of the swirl chamber. Vacuum cleaner having a blower for flowing the air to the cyclone separator according to any one of claims 1 to 7.

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