JP2014094137A - Cyclone separator and vacuum cleaner - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a cyclone separator reduced in noise.SOLUTION: A cyclone separator is provided with an inflow pipe 11 into which dust-containing air is flown. The inflow pipe 11 is connected to the upper part of a swirl chamber 12. The swirl chamber 12 swirls the dust-containing air to centrifuge the air to separate dust from air. On a sidewall of the swirl chamber 12, a first side opening part 13a and a second side opening part 13b are formed. The swirl chamber 12 communicates to a first side dust-collecting chamber 14a and a second side dust-collecting chamber 14b via the first side opening part 13a and the second side opening part 13b. The first side dust-collecting chamber 14a and the second side dust-collecting chamber 14b are formed so as to cover the outer periphery of the swirl chamber 12 when seen from the swirl axis direction of the dust-containing air. Centrifugally separated dust is collected in the first side dust-collecting chamber 14a and the second side dust-collecting chamber 14b. A discharge pipe 18 discharging the air separated from the dust-containing air is connected to the swirl chamber 12.

Description

  The present invention relates to a cyclone separator and a vacuum cleaner equipped with the cyclone separator.

  The following Patent Document 1 describes a vacuum cleaner equipped with a cyclone separator. This cyclone separator includes a swivel portion formed in a spiral shape. The swivel portion is provided with a plurality of openings formed by opening the wall surface. The swivel unit communicates with the plurality of dust collection chambers through the plurality of openings. By separating and collecting the dust in multiple stages in this way, it is configured to be small and improve usability while improving the collection performance.

JP 2010-120 A

  The cyclone separation device described in Patent Document 1 has a configuration in which the swivel unit is disposed on the outside, so that the sound in the swivel unit easily leaks to the outside and generates noise.

  The present invention has been made to solve the above-described problems. The purpose is to provide a cyclone separator that can reduce noise while improving the collection performance with a small configuration, and a vacuum cleaner equipped with such a cyclone separator.

  The cyclone separation device according to the present invention has an inflow pipe into which dust-containing air from an external air passage flows, and the inflow pipe is connected to the upper portion, and the dust-containing air that has flowed in from the inflow pipe is swirled to centrifuge the air and dust. A swirl chamber, a plurality of side openings formed in the side wall of the swirl chamber, and a swirl chamber formed to cover the outer periphery of the swirl chamber as viewed from the swirl axis direction of the dust-containing air. And a plurality of side dust collection chambers for collecting the centrifugally separated dust and a discharge pipe for discharging the air separated from the dust-containing air.

  According to the present invention, in a vacuum cleaner equipped with a cyclone separator and a cyclone separator, noise can be reduced while improving collection performance with a small configuration.

It is an external appearance perspective view of the vacuum cleaner 100 which shows Embodiment 1 of this invention. It is an external appearance perspective view of the vacuum cleaner main body 5 of the vacuum cleaner 100 which shows Embodiment 1 of this invention. It is a top view of the vacuum cleaner main body 5 of the vacuum cleaner 100 which shows Embodiment 1 of this invention. It is aa sectional drawing of the vacuum cleaner main body 5 of the vacuum cleaner 100 of FIG. 3 which shows Embodiment 1 of this invention. It is an external appearance perspective view of the dust collection unit 50 of the vacuum cleaner 100 which shows Embodiment 1 of this invention. It is a top view of the dust collection unit 50 of the vacuum cleaner 100 of FIG. 5 which shows Embodiment 1 of this invention. It is AA sectional drawing of the dust collection unit 50 of the vacuum cleaner 100 of FIG. 6 which shows Embodiment 1 of this invention. It is BB sectional drawing of the dust collection unit 50 of the vacuum cleaner 100 of FIG. 7 which shows Embodiment 1 of this invention. It is CC sectional drawing of the dust collection unit 50 of the vacuum cleaner 100 of FIG. 7 which shows Embodiment 1 of this invention. It is DD sectional drawing of the dust collection unit 50 of the vacuum cleaner 100 of FIG. 7 which shows Embodiment 1 of this invention. It is EE sectional drawing of the dust collection unit 50 of the vacuum cleaner 100 of FIG. 7 which shows Embodiment 1 of this invention. It is an external appearance perspective view which shows a part of dust collection chamber at the time of decomposition | disassembly of the dust collection unit 50 of the vacuum cleaner 100 which shows Embodiment 1 of this invention. It is CC sectional drawing of the dust collection unit 50 of the vacuum cleaner 100 of FIG. 7 which shows Embodiment 2 of this invention. It is DD sectional drawing of the dust collection unit 50 of the vacuum cleaner 100 of FIG. 7 which shows Embodiment 2 of this invention. It is FF sectional drawing of the dust collection unit 50 of the vacuum cleaner 100 of FIG. 13 which shows Embodiment 2 of this invention. It is CC sectional drawing of the dust collection unit 50 of the vacuum cleaner 100 of FIG. 7 which shows Embodiment 3 of this invention.

  The present invention will be described in detail with reference to the accompanying drawings. In each figure, the same or corresponding parts are denoted by the same reference numerals. The overlapping description will be simplified or omitted as appropriate.

Embodiment 1 FIG.
FIG. 1 is a perspective view showing the electric vacuum cleaner according to Embodiment 1 of the present invention.
As shown in FIG. 1, the vacuum cleaner 100 includes a suction port body 1, a suction pipe 2, a connection pipe 3, a suction hose 4, a vacuum cleaner body 5, and a dust collection unit attached to the vacuum cleaner body 5. 50.

  The suction inlet 1 is for sucking in dust (dust) and dust-containing air on the floor surface from an opening formed downward. One end of a straight cylindrical suction pipe 2 is connected to the exhaust side of the suction port body 1. The other end of the suction pipe 2 is connected to one end of a connection pipe 3 bent slightly in the middle. The connection pipe 3 is provided with a handle provided with an operation switch for controlling the operation of the vacuum cleaner 100. One end of a suction hose 4 having flexibility and a bellows shape is connected to the other end of the connection pipe 3. Furthermore, the vacuum cleaner body 5 is connected to the other end of the suction hose 4.

  The cleaner body 5 includes an electric blower 52 (see FIG. 4) and a power cord. The electric blower 52 is powered by connecting the power cord to the external power source. The electric blower 52 is driven by being energized and performs a suction operation. The suction port body 1, the suction pipe 2, the connection pipe 3, and the suction hose 4 constitute a part of a suction path for allowing dust-containing air to flow from the outside to the inside of the cleaner body 5.

  FIG. 2 is a perspective view of a state in which the dust collection unit 50 is mounted on the vacuum cleaner main body 5 of the electric vacuum cleaner according to Embodiment 1 of the present invention. As shown in FIG. 2, the cleaner body 5 includes a dust collection unit housing portion 5 a in which the dust collection unit 50 is detachably mounted and housed, and an electric blower housing portion 5 b that houses the electric blower 52.

  The dust collection unit housing portion 5 a is formed on the upper side of the cleaner body 5. The dust collection unit accommodating portion 5a is composed of an inclined surface 5a-1 that is lower in front and higher as it goes rearward, and an inclined surface 5a-2 that is formed so as to protrude substantially vertically to the front side of the inclined surface 5a-1. It is formed. The dust collection unit 50 is mounted and accommodated along the inclined surface of the dust collection unit accommodating portion 5a, and the bottom surface is covered and stably held by the inclined surface 5a-2.

FIG. 3 is a top view of the cleaner body 5 shown in FIG. FIG. 4 is a cross-sectional view taken along the line aa of the cleaner body 5 shown in FIG.
As shown in FIG. 4, an intake air passage 49 and an exhaust air passage 51 are formed inside the electric blower housing portion 5b, and various devices such as an electric blower 52 and a cord reel are housed therein. Moreover, the electric blower accommodating part 5b is provided with the exhaust port which is not shown in figure, and also is equipped with the wheel 53 (refer FIG. 2) in the side.

Next, the structure of the dust collection unit 50 will be described.
As described above, FIG. 4 is a cross-sectional view of the vacuum cleaner body 5 with the dust collection unit 50 attached. FIG. 5 is a perspective view showing an appearance of the dust collection unit 50 of the electric vacuum cleaner according to Embodiment 1 of the present invention. 6 is a top view of the dust collection unit 50 shown in FIG.

  As shown in FIG. 4, the dust collection unit 50 includes an inflow pipe 11 that takes in the dust-containing air through a suction air passage 49 inside the cleaner body 5. The inflow pipe 11 is connected in a tangential direction to the side wall of the swirl chamber 12 (see FIG. 6).

  As shown in FIG. 4, the swirl chamber 12 is connected to a discharge pipe 18 that discharges air. A discharge port 17 communicating with the swirl chamber 12 is formed at one end of the discharge pipe 18. The discharge pipe 18 is installed so as to protrude into the swirl chamber 12 with its axis substantially coinciding with that of the swirl chamber 12.

Here, with reference to FIG. 4, the path | route which discharges the air which flowed in the inside of the cleaner body 5 out of the cleaner body 5 is demonstrated.
The air that has flowed into the cleaner body 5 reaches the dust collection unit 50 through the suction air passage 49. In the dust collection unit 50, the air flows in the order of the inside of the inflow pipe 11, the swirl chamber 12, the discharge port 17, and the inside of the discharge pipe 18. The air discharged from the discharge pipe 18 flows into the exhaust air passage 51 inside the cleaner body 5. Thereafter, the air is discharged to the outside of the cleaner body 5 through an exhaust path including an exhaust air path 51 and an exhaust port (not shown).

  FIG. 7 is a cross-sectional view of the dust collection unit 50 shown in FIG. In this specification, unless otherwise specified, the direction of the dust collection unit 50 is designated with reference to the vertical direction in FIG.

  As shown in FIG. 7, the side wall of the swirl chamber 12 has a cylindrical portion 12a and a conical portion 12b. The cylindrical portion 12 a is provided with a first side opening 13 a formed by opening a part of the side wall below the inflow pipe 11. The swirl chamber 12 communicates with the first side dust collection chamber 14a through the first side opening 13a.

  As shown in FIG. 7, the cylindrical portion 12a is provided with a second side opening 13b formed by opening a part of the side wall thereof. The second side opening 13b is formed at a position downstream of the first side opening 13a in the swirling direction of the air in the swirl chamber 12. The second side opening 13b is formed to have a smaller opening area than the first side opening 13a. Furthermore, the second side opening 13b is formed at a position below the first side opening 13a. The swirl chamber 12 communicates with the second side dust collection chamber 14b through the second side opening 13b.

  Moreover, as shown in FIG. 7, the lower opening part 15 is formed in the lower end of the cone part 12b. The swirl chamber 12 communicates with the lower dust collection chamber 16 through the lower opening 15. The lower dust collection chamber 16 is formed in a cylindrical shape so as to surround the conical portion 12b. In other words, the conical portion 12 b is arranged so that the tip thereof is inserted into the lower dust collection chamber 16.

  Moreover, as shown in FIG. 7, the 1st side dust collection chamber 14a is formed so that it may extend below from the 1st side opening part 13a. The second side dust collection chamber 14b is formed to extend downward from the second side opening 13b.

FIG. 8 is a BB cross-sectional view of the dust collection unit 50 shown in FIG.
As shown in FIG. 8, the first side dust collection chamber 14 a and the second side dust collection chamber 14 b are arranged so as to surround the swirl chamber 12 when viewed from the vertical direction.

FIG. 9 is a cross-sectional view of the dust collection unit 50 shown in FIG. FIG. 10 is a DD cross-sectional view of the dust collection unit 50 shown in FIG.
As shown in FIGS. 9 and 10, the first side dust collection chamber 14 a and the second side dust collection chamber 14 b as viewed from the top and bottom direction include an annular space covering the outer periphery of the swirl chamber 12, and a partition wall 20 a and It is formed by partitioning with the partition 20b.

Next, the operation of the dust collection unit 50 will be described mainly with reference to FIG.
The dust collection unit 50 takes in dust-containing air from the inflow pipe 11 through the suction air passage 49. The taken-in dust-containing air flows in a substantially tangential direction with respect to the side wall of the swirl chamber 12 and becomes a swirl airflow. The swirling airflow flows downward due to gravity and a path structure while forming a forced vortex region near the central axis of the swirl chamber 12 and a free vortex region on the outer peripheral side thereof. At this time, since centrifugal force acts on the dust contained in the dust-containing air, relatively bulky dust (hereinafter referred to as “garbage A”) such as large fiber dust or hair is pressed against the inner wall of the swirl chamber 12. Separated from the swirling airflow. The separated garbage A is sent to the first side dust collection chamber 14a through the first side opening 13a.

  Also, among the waste A, sand dust that has a relatively large specific gravity and easily descends in the swirl chamber, and waste that has not flowed into the first side dust collection chamber 14a is second through the second side opening 13b. It is sent to the side dust collection chamber 14b.

  Further, the dust that has not flowed into either the first side dust collection chamber 14 a or the second side dust collection chamber 14 b travels below the swirl chamber 12 on the swirling airflow descending the swirl chamber 12. At this time, the centrifugal force of the swirling airflow is increased in the conical portion 12 b below the swirling chamber 12. As a result, dust having a relatively small volume (hereinafter referred to as “garbage B”) such as fine dust and fine fiber dust is separated from the swirling airflow and sent into the lower dust collecting chamber 16 through the lower opening 15. .

  The swirling airflow from which the dust A and the dust B are removed is reversed below the swirl chamber 12. The inverted swirling airflow rises along the central axis of the swirling chamber 12 and flows into the discharge pipe 18 from the discharge port 17. The air is discharged to the exhaust air passage 51 side of the cleaner body 5 through the discharge pipe 18.

  As described above, the present embodiment includes the first side dust collection chamber 14a and the second side dust collection chamber 14b. According to this configuration, the waste A can be reliably separated and collected in multiple stages. Furthermore, in the lower cone portion 12b, the waste B can be reliably separated and collected by the increased centrifugal force. As a result, the collection performance can be improved with a small configuration of one swirl chamber.

  Further, in the present embodiment, the first side dust collection chamber 14 a and the second side dust collection chamber 14 b cover the outer periphery of the swirl chamber 12. According to this structure, the airflow sound in the swirl chamber 12 is less likely to leak to the outside. As a result, noise can be reduced with a small configuration. Further, since the swirl chamber 12 is not constituted by an air passage, the sound generated by rubbing the swirling dust with the wall surface of the swirl chamber 12 is small. For this reason, noise can be further reduced.

  As shown in FIGS. 9 and 10, the first side dust collection chamber 14a is formed to have a larger volume than the second side dust collection chamber 14b. According to this structure, the amount of dust collection of the 1st side dust collection chamber 14a with much collection amount of garbage A can be increased. For this reason, compared with the case where the collection amount of the whole side dust collection chamber is the same, and the volume of the 1st side dust collection chamber 14a and the 2nd side dust collection chamber 14b is equivalent, the whole side dust collection chamber The amount of dust collected can be increased. As a result, the collection performance can be improved with a small configuration.

  Moreover, as shown in FIG. 9, the 1st side dust collection chamber 14a is formed so that it may extend along the turning direction of the air in the turning chamber 12 from the 1st side opening part 13a. As shown in FIG. 10, the second side dust collection chamber 14b is formed so as to extend from the second side opening 13b along the swirling direction of the air in the swirl chamber 12. In these side dust collection chambers, an airflow in the same direction as the swirling direction of the air in the swirl chamber 12 is generated by the airflow flowing from the side openings. According to this configuration, it is possible to collect dust while pressing the dust against the partition wall on the downstream side in the turning direction using the momentum of the airflow in the side dust collection chamber. For this reason, dust can be compressed and dust collection amount can be increased. As a result, the collection performance can be improved with a smaller configuration. Moreover, it is possible to suppress the dust from continuing to rotate in the dust collection chamber, and to further reduce noise.

  As described above, in the present embodiment, an airflow in the same direction as the swirling direction of the air in the swirl chamber 12 is generated in the side dust collection chamber. For this reason, in the side dust collection chamber, it is difficult for dust to collect in the space upstream of the side opening in the swirl direction. If the upstream space is reduced, the amount of dust collection can be expected to increase.

  Therefore, in the present embodiment, the partition wall 20b is formed so as to substantially contact the upstream end portion of the first side opening 13a (see FIG. 9). Further, the partition wall 20a is also formed so as to be substantially in contact with the upstream side end portion of the second side opening 13b (see FIG. 10). According to this configuration, it is possible to minimize the space on the upstream side with respect to the side opening portion where dust does not collect and minimize the space on the downstream side. For this reason, compared with the case where a partition is formed apart from a side opening part, the amount of dust collection of a side dust collection room can be increased to the maximum. As a result, the collection performance can be improved with a smaller configuration.

  Moreover, as shown in FIG. 7, the 1st side dust collection chamber 14a is formed so that it may extend below from the 1st side opening part 13a. The second side dust collection chamber 14b is formed to extend downward from the second side opening 13b. According to this configuration, it is possible to collect dust from below the first side dust collection chamber 14a and the second side dust collection chamber 14b using the momentum of the airflow swirling while descending the inside of the swirl chamber 12. For this reason, the amount of dust collection can be increased by using the volume of the dust collection chamber without waste. As a result, the collection performance can be improved with a smaller configuration.

  Further, as shown in FIGS. 9 and 10, the second side opening 13b is formed to have an opening area smaller than that of the first side opening 13a. Garbage that reaches the second side opening 13b is sand litter having a relatively large specific gravity and small bulk among the garbage A, and fiber litter, hair, and the like that could not be captured by the first side opening 13a. Since it is a part of large garbage, it is smaller than the garbage reaching the first side opening 13a. Therefore, by reducing the opening area of the second side opening 14b, it is possible to suppress the turbulence of the swirling airflow in the swirling chamber 12 by providing the opening while securing the opening area for capturing the dust. . As a result, the centrifugal force in the swirl chamber 12 can be increased and the collection performance can be improved.

  Further, as shown in FIG. 7, the second side opening 13b is formed below the first side opening 13a. According to this structure, the 1st side opening part 13a and the 2nd side opening part 13b can be arrange | positioned on the track | orbit of the garbage A swirling while descending the inside of the turning chamber 12. Accordingly, the dust A can be reliably captured, and sand dust that is relatively small in volume and easily descends can be easily captured by the lower second side opening 13b. As a result, the collection performance can be improved.

  Further, as shown in FIG. 7, below the second side opening 13b, the lower dust collection chamber 16 covers the outer periphery of the swirl chamber 12, and further, the first side dust collection chamber 14a and the second side dust collection The chamber 14 b covers the outer periphery of the lower dust collection chamber 16. According to this structure, the lower part of the swirl chamber 12 with a high swirl wind speed can be covered twice with the lower dust collection chamber and the side dust collection chamber. As a result, the airflow sound in the swirl chamber 12 becomes more difficult to leak, and noise can be further reduced.

FIG. 11 is an EE cross-sectional view of the dust collection unit 50 shown in FIG.
As shown in FIG. 11, a communication port 21 is provided by opening the wall surface of a partition wall 20a that partitions the downstream side of the first side dust collection chamber 14a and the upstream side of the second side dust collection chamber 14b. The communication port 21 may be covered with the mesh member 22. According to this configuration, the dust in the first side dust collection chamber 14a is compressed by the airflow flowing from the first side dust collection chamber 14a to the second side dust collection chamber 14b through the communication port 21. Can do. Thereby, the dust collection amount of the 1st side dust collection chamber 14a with much collection amount of garbage can be increased. As a result, the collection performance can be improved with a smaller configuration.

FIG. 12 is an external perspective view showing a part of the dust collection chamber when the dust collection unit is disassembled.
As shown in FIG. 12, the parts of the dust collection unit forming the first side dust collection chamber 14a, the second side dust collection chamber 14b, the partition wall 20a, the partition wall 20b, and the lower dust collection chamber 16 are integrally formed. The swirl chamber 12 may be detachable. According to this configuration, the dust in the plurality of dust collection chambers can be easily discarded at a time, and usability can be improved.

Embodiment 2. FIG.
The second embodiment will be described with reference to FIGS. The second embodiment is the same as the first embodiment except for the structure of the first side dust collection chamber 14a, the second side dust collection chamber 14b, the partition wall 20a, and the partition wall 20b. Hereinafter, the difference from the first embodiment will be mainly described, and the same parts as those of the first embodiment will be denoted by the same reference numerals and the description thereof will be omitted.

  As described above, in the first embodiment, the dust flowing into the first side dust collection chamber 14a and the second side dust collection chamber 14b from the swirl chamber 12 descends in the swirl direction of the air in the swirl chamber 12 while descending. Proceed along. For this reason, in the first side dust collection chamber 14a and the second side dust collection chamber 14b, it is difficult for dust to collect in the space on the upstream side in the swirl direction and below. Moreover, it is difficult for dust to collect in the space upstream in the swirl direction and radially outside the swirl chamber. In the present embodiment, such a wasteful space where dust is difficult to collect is reduced, and the amount of collected dust is increased.

  FIG. 13 is a cross-sectional view obtained when the dust collection unit 50 in the present embodiment is cut along the CC cross section shown in FIG. FIG. 14 is a cross-sectional view obtained when the dust collection unit 50 in the present embodiment is cut along the DD cross section shown in FIG.

  As shown in FIGS. 13 and 14, also in the present embodiment, the partition wall 20a and the partition wall 20b are formed so as to be substantially in contact with the upstream end of the side opening, as in the first embodiment. . As a result, with respect to the side dust collection chamber, it is possible to minimize the upstream space where dust is difficult to collect and to enlarge the downstream space.

  Furthermore, in this Embodiment, the partition 20a and the partition 20b are formed so that it may be located in the turning direction downstream as it goes to the radial direction outer side of the turning chamber 12. As shown in FIG. According to this configuration, it is possible to reduce the space on the upstream side in the radial direction where dust is difficult to collect, and to enlarge the space on the downstream side of the other side dust collection chambers that are adjacent to it. As a result, the amount of dust collection in the entire side dust collection chamber can be increased, and the collection performance can be improved with a smaller configuration.

  In the present embodiment, a part of the outer periphery of the swirl chamber 12 is doubly covered with the first side dust collection chamber 14a and the second side dust collection chamber 14b. Thereby, the airflow sound in the swirl chamber 12 is further less likely to leak to the outside. As a result, noise can be further reduced.

FIG. 15 is a cross-sectional view of the dust collection unit shown in FIG.
As shown in FIG. 15, the partition wall 20 a and the partition wall 20 b are formed so as to be inclined toward the downstream side in the swirl direction as it goes downward of the swirl chamber 12. According to this configuration, it is possible to reduce the space below the upstream side where dust is difficult to collect, and to widen the space on the downstream side of the other side dust collection chambers that are adjacent to it. As a result, the amount of dust collection in the entire side dust collection chamber can be further increased, and the collection performance can be improved with a smaller configuration.

Embodiment 3 FIG.
A third embodiment will be described with reference to FIG. The third embodiment is the same as the second embodiment except for the structure of the first side dust collection chamber 14a, the second side dust collection chamber 14b, the partition wall 20a, and the partition wall 20b. Hereinafter, the difference from the second embodiment will be mainly described, and the same parts as those of the second embodiment are denoted by the same reference numerals, and a part of the description will be omitted.

FIG. 16 is a cross-sectional view obtained when the dust collection unit 50 in the present embodiment is cut along the CC cross section shown in FIG.
As shown in FIG. 16, also in the present embodiment, as in the second embodiment, the partition wall 20a and the partition wall 20b are formed so as to substantially contact the upstream end of the side opening. As a result, with respect to the side dust collection chamber, it is possible to minimize the upstream space where dust is difficult to collect and to enlarge the downstream space.

  Further, in the present embodiment, as shown in FIG. 16, the partition walls 20a and the partition walls 20b are formed so as to be curved as viewed from the up-down direction. That is, the partition wall 20 a and the partition wall 20 b are formed as curved surfaces that are positioned on the downstream side in the swirl direction as they go outward in the radial direction of the swirl chamber 12. For this reason, it is possible to reduce the space on the radially outer side on the upstream side where dust is difficult to accumulate, and to expand the space on the downstream side of the other side dust collection chambers that are adjacent to the upstream side. As a result, the dust collection amount in the entire side dust collection chamber can be further increased, and the collection performance can be improved.

  Also in the present embodiment, a part of the outer periphery of the swirl chamber 12 is doubly covered with the first side dust collection chamber 14a and the second side dust collection chamber 14b. However, since the partition wall 20a and the partition wall 20b are formed of curved surfaces, the swirl chamber 12 is double-covered in a wider range as compared with the second embodiment. For this reason, the airflow sound in the swirl chamber 12 is further less likely to leak, and noise can be reduced.

  In the first to third embodiments, two side dust collection chambers for separating and collecting the garbage A are provided. However, the same effect can be obtained by a configuration including three or more side dust collection chambers.

  In the first to third embodiments, a plurality of side dust collection chambers are formed by partitioning a space covering the outer periphery of the swirl chamber 12 with a partition wall. However, it is not always necessary to provide a partition in order to form a plurality of side dust collection chambers. For example, a plurality of side dust collection chambers may be formed as individual parts and combined with the swirl chamber 12.

  Since the present invention relates to the structure of the dust collection unit 50, the present invention is not limited to the canister type vacuum cleaner described in the first to third embodiments.

  DESCRIPTION OF SYMBOLS 1 Suction port body, 2 Suction pipe, 3 Connection pipe, 4 Suction hose, 5 Vacuum cleaner main body, 5a Dust collection unit accommodating part, 5a-1, 5a-2 Inclined surface, 5b Electric blower accommodating part, 11 Inflow pipe, 12 Swirl chamber, 12a cylindrical portion, 12b conical portion, 13a first side opening, 13b second side opening, 14a first side dust collection chamber, 14b second side dust collection chamber, 15 lower opening, 16 Lower dust collection chamber, 17 discharge port, 18 discharge pipe, 20a, 20b partition, 21 communication port, 22 mesh member, 49 suction air passage, 50 dust collection unit, 51 exhaust air passage, 52 electric blower, 53 wheels, 100 Electric vacuum cleaner

Claims (13)

An inflow pipe into which dust-containing air from the external air passage flows,
A swirl chamber in which the inflow pipe is connected to the upper part, and the dust-containing air flowing from the inflow pipe is swirled to separate the air and dust;
A plurality of side openings formed in a side wall of the swirl chamber;
A plurality of dusts that are formed so as to cover the outer periphery of the swirl chamber as viewed from the swirl axis direction of the dust-containing air, communicate with the swirl chamber through the plurality of side openings, and collect the dust that has been centrifuged. Side dust collection chamber,
A discharge pipe for discharging air separated from the dust-containing air;
Cyclone separation device comprising:   Of the plurality of side dust collection chambers, the volume of one that communicates with the swirl chamber via a side opening located on the upstream side is greater than that of the swirl chamber via a side opening located on the downstream side. The cyclone separating apparatus according to claim 1, wherein the cyclone separating apparatus is formed larger than a communicating one.   The cyclone separator according to claim 1 or 2, wherein the plurality of side dust collection chambers are formed so as to extend from the plurality of side openings along a swirling direction of the dust-containing air.   The cyclone separator according to any one of claims 1 to 3, wherein the plurality of side dust collection chambers are formed so as to extend downward from the plurality of side openings in the direction of the pivot axis.   Of the inner walls of the plurality of side dust collection chambers, a portion adjacent to the other side dust collection chamber is formed so as to be positioned on the downstream side in the swirl direction of the dust-containing air as it moves away from the swirl shaft. The cyclone separator according to any one of claims 1 to 4.   Of the inner walls of the plurality of side dust collection chambers, the portion adjacent to the other side dust collection chamber is inclined so as to be positioned downstream in the swirl direction of the dust-containing air as it goes downward in the swivel axis direction. The cyclone separator according to any one of claims 1 to 5, which is formed as described above.   The cyclone separator according to any one of claims 1 to 6, wherein among the plurality of side openings, an opening area of a downstream portion is formed smaller than that of an upstream portion.   The cyclone separation according to any one of claims 1 to 7, wherein among the plurality of side openings, a portion located on the downstream side is formed below the swivel axis direction than a portion located on the upstream side. apparatus. A lower opening that opens downward in the swirl axis direction of the swirl chamber;
A lower dust collection chamber that communicates with the swirl chamber via the lower opening;
With
The outer periphery of the lower part of the swirl chamber is covered with the lower dust collection chamber, and the outer periphery of the lower dust collection chamber is covered with the plurality of side dust collection chambers. Cyclone separation device.   The swirl chamber, a part of at least one of the plurality of side dust collection chambers, and a part of another side dust collection chamber adjacent to the one side dust collection chamber are orthogonal to the swivel axis. The cyclone separation device according to any one of claims 1 to 9, wherein the cyclone separation device is formed so as to be aligned in a direction to perform.   A part of the inner walls of the plurality of side dust collection chambers, which is adjacent to the other side dust collection chamber, is formed as a curved surface toward the downstream side in the swirl direction of the dust-containing air as it moves away from the swirl shaft. Item 11. The cyclone separator according to any one of Items 1 to 10.   The inner wall of the plurality of side dust collection chambers is provided with an opening covered with a mesh member in a portion adjacent to another side dust collection chamber. Cyclone separation device.   The vacuum cleaner carrying the cyclone separator of any one of Claims 1 thru | or 12.

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