JP4080833B2 - Electric vacuum cleaner - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an electric vacuum cleaner provided with a cyclone separation device that cleans dust while separating dust by swirling dust-containing air that is sucked with the operation of an electric blower.
[0002]
[Prior art]
BACKGROUND ART A conventional vacuum cleaner provided with a cyclone separator has a cyclone separator and an electric blower provided in such a posture that their axial directions are respectively vertical. As a result, the airflow drawn in the horizontal direction from the dust suction opening that opens to the front of the vacuum cleaner body is changed in direction by approximately 90 ° and is supplied downward to the bottomed cylindrical dust collection cup of the cyclone separator. . With this supply, a swirl flow swirling along the inner peripheral surface of the dust collecting cup is created by the swirl flow forming means of the cyclone separator. This swirling flow reverses at the lower part of the dust collecting cup and rises in the radial center of the cup, and passes out of the dust collecting cup through an airflow outlet covered with a filter that closes the upper end opening of the dust collecting cup. leak. Thereafter, the outflowed airflow is sucked into the electric blower through the duct, and is discharged out of the cleaner body through this blower.
[0003]
The airflow and the dust contained in the dust collection cup are separated by centrifugal force by such a flow of the airflow, and the separated dust is stored in the dust collection cup (for example, Patent Documents). 1).
[0004]
[Patent Document 1]
JP 2002-17626 A (paragraphs 0033-0039, 0050, 0056, FIG. 1, FIG. 11, FIG. 12)
[0005]
[Problems to be solved by the invention]
The cyclone separation device described in Patent Document 1 reverses and raises the airflow that is created in the dust collection cup and swirls downward, so that dust is easily centrifuged while pressure loss is large. For this reason, it is disadvantageous to improve the dust suction performance due to the poor suction power of the electric blower.
[0006]
For this improvement, the present inventor has proposed a vacuum cleaner that employs a so-called straight-flow cyclone separating device that causes the airflow to flow in the traveling direction of the airflow that flows while turning. In this type of straight-flow cyclone separator, the pressure loss can be reduced because the straight-running energy of the airflow flowing through the inside is large. However, on the other hand, since the swirling energy of the airflow is small, the performance of separating dust from the airflow is not good.
[0007]
By the way, the dust that the vacuum cleaner absorbs not only has various types such as hair, paper litter, cotton litter, sand, dust, but also has different forms such as rounded and extended even with the same dust, There are various types such as a combination of two or more of each type. In this way, various kinds of dust have different properties and physical properties with respect to the air current, such as being easy to move on the air current, easily entangled, and easy to get on the air current.
[0008]
And even in the vacuum cleaner provided with the reverse flow type cyclone separation device described in Patent Document 1, it is currently in a stage where it is impossible to sufficiently separate all kinds of dust. It is considered that the dust separation performance is further deteriorated in a vacuum cleaner equipped with a straight flow type cyclone separation device having a low flow rate.
[0009]
The problem to be solved by the present invention is to obtain a vacuum cleaner capable of improving the dust separation performance as well as the dust absorption performance.
[0010]
[Means for Solving the Problems]
In order to solve the above-mentioned problem, the present invention arranges a rectilinear flow type cyclone separator on the upstream side of an electric blower attached to a cleaner body having a dust suction port, and this cyclone separator is connected to the dust suction port. A frustoconical part provided with a communicating air flow inlet, a cyclone upstream part having a terminal part continuous with the terminal part of the frustoconical part, a separation cylinder having no change in the diameter continuous on the downstream side of the terminal part, and A cyclone downstream portion having an airflow outlet provided in the separation cylinder and imparting a stronger centrifugal separation action than the cyclone upstream portion is provided, and the cyclone upstream portion forms an axial one end side portion and the cyclone downstream portion Is a separation cylinder that forms the other end portion in the axial direction, and the air flow inlet is disposed at one axial end portion of the separation cylinder, and the part disposed on the electric blower side The separation cylinder provided with the air flow outlet at the other axial end of the cylinder, and the swirl for rotating dust-containing air introduced through the air flow inlet provided in the upstream part of the cyclone in the separation cylinder A flow forming means, a first dust outlet connected to the end portion of the cyclone upstream portion and extending in a tangential direction of the peripheral wall of the end portion, and a downstream portion of the separation cylinder A second dust outlet formed by opening in the radial direction of the separation cylinder, a first dust storage portion provided around the separation cylinder for collecting dust passing through the first dust outlet, and the separation cylinder A second dust storage part provided around the body for storing dust passing through the second dust outlet.
[0011]
In the present invention, the straight flow type cyclone separation device means a cyclone separation device capable of separating dust contained in the air flow while allowing the air flow to flow out in the traveling direction of the air flow flowing while turning. is doing. The substantially straight flow flowing in the separation device may be in the vertical direction, the horizontal direction, or the oblique direction with respect to the cleaner body. In the present invention, the separation cylinder may be a cylindrical body or a rectangular cylinder as long as the airflow can swirl inside the separation cylinder, but the difference between the long axis and the short axis is particularly small in a cross section orthogonal to the axial direction. An elliptic cylindrical body is preferable, and it is preferable to use a cylindrical body having a perfect circular section.
[0012]
In the present invention, the swirl flow forming means imparts swirl motion to the dust-containing air that has flowed into the separation cylinder through the air flow inlet, and is coaxial with the central axis of the cylinder within the separation cylinder. Alternatively, spiral wings, propellers, and the like that are slightly shifted can be used, and the airflow inlet can also be used. In this case, the airflow inlet may be provided in the separation cylinder in an oblique posture such that the dust-containing air passing through the airflow inlet contains a large amount of components that are going to travel straight through the separation cylinder. In the present invention, the airflow inlet can be connected to the peripheral wall or the inlet side end wall of the separation cylinder. In the present invention, the air flow outlet can be formed by an opening opened on the outlet side of the separation cylinder, and is formed by a cylinder that protrudes toward the upstream side on the outlet side and is positioned at the radial center of the separation cylinder. Alternatively, it may be made of, for example, a conical filter body that protrudes upstream from the outlet and is positioned at the radial center of the separation cylinder.
[0013]
In the present invention, the first dust outlet can be directly connected to a first dust reservoir corresponding to the first dust outlet, or indirectly through a first outlet passage which can be regarded as a first dust outlet. It is also possible to connect to a single dust reservoir. Similarly, the second dust outlet can be directly connected to a second dust reservoir corresponding to the dedicated dust outlet, and can be substantially regarded as a second dust outlet. It is also possible to connect to the second dust reservoir indirectly through the second outlet passage.
[0014]
In the present invention, in the process of flowing the airflow straightly from one axial end to the other end in the separation cylinder, the swirling motion is given to the airflow by the swirling flow forming means, and the dust in the airflow is centrifuged. The separated dust is taken out individually from the first and second dust outlets to the first dust receiver or the second dust receiver. For this reason, the straight-running energy of the air flow in the separation cylinder is large, and therefore the pressure loss can be reduced.
[0015]
Further, the first dust outlet provided in the upstream portion of the cyclone where the number of swirling airflows is small is quickly brought toward the inner peripheral surface of the separation cylinder mainly due to insufficient centrifugal action of the swirling airflow. Light dust that moves along the inner peripheral surface, that is, fine paper dust and cotton dust that easily move in the air stream, is guided to the outlet wall that extends in the tangential direction of the separation cylinder due to its inertia. Thus, it can be effectively taken out to the first dust reservoir. The second dust outlet provided in the downstream portion of the cyclone where the number of swirling airflows is large and opened in the radial direction of the separating cylinder is mainly directed toward the inner peripheral surface of the separating cylinder by sufficient centrifugal separation of the swirling airflow. Passes relatively heavy dust that is moved along the inner peripheral surface, that is, sand and dust that are difficult to move on the airflow, and can be effectively taken out to the second dust reservoir. It is.
[0016]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, an embodiment of the present invention will be described with reference to FIGS.
[0017]
The vacuum cleaner main body 2 provided in the vacuum cleaner denoted by reference numeral 1 in FIG. 1 includes a rear case 4 having a moving wheel 3 attached and an exhaust portion (not shown), and a front case having a caster 5 attached to the lower surface. 6 is provided.
[0018]
The front case 6 is detachably attached to the rear case 4. The front case 6 has a box cover portion 6a that is connected to the rear case 4 and covers a filter box of a separation device described later from above. The front case 6 is provided with a dust suction port 7 directed forward, for example. An air flow introduction means 8 such as a dust suction hose for guiding dust-containing air sucked through the dust suction port 7 is detachably connected.
[0019]
The rear case 4 incorporates an electric blower 11 with its inlet (not shown) facing forward, for example. Further, the rear case 4 has a straight flow type cyclone separation device (hereinafter abbreviated as a separation device) 12, a part of which is accommodated in the rear case 4, for example, and the front portion projects forward of the rear case 4. It is supported. In the present embodiment, the electric blower 11 and the separation device 12 are connected to each other and unitized. With this connection, the electric blower 11 is disposed on an extension of the central axis of the separation device 12. In this case, the central axis of the electric blower 11 and the central axis of the separation device 12 may be shifted in parallel or in a crossing relationship with each other, but as a preferred example, the two axes are substantially coincident. The electric blower 11 and the separation device 12 are arranged.
[0020]
As shown in FIGS. 2 to 4, the separation device 12 includes a base 21, a separation cylinder 31, a spiral blade 41 that forms a swirl flow forming means, a first dust outlet 45, a second dust outlet 48, and a first dust reservoir. 51 and a second dust reservoir 55.
[0021]
The base 21 is made up of a base part 22, a filter box 23, and a blower mounting part 24. The internal space of the base portion 22 is divided by the partition wall 25 into first and second dust storage portions 51 and 55 that are independent of each other and are not in communication with each other. 3 and 4, the first dust reservoir 51 is formed on the front side of the second dust reservoir 55. The bottom plate 21a of the base 21 is detachably provided. The bottom plate 21a is attached to and detached from the base 21 with the front case 6 removed. By this removal, the dust in the first and second dust storage portions 51 and 55 can be discharged, respectively.
[0022]
The filter box 23 is provided, for example, upward and at right angles to the base 22. A box lid 23a is detachably attached to the tip (upper end) of the box 23. The box lid 23a is covered with the box cover portion 6a.
[0023]
A filter 26 (see FIGS. 1 and 6) is accommodated in the filter box 23 so that it can be taken in and out for regeneration and replacement by cleaning. The filter 26 captures dust contained in the airflow sucked into the electric blower 11 from the separation cylinder 31. The filter 26 may be a single layer or a multilayer, and may have other functions such as removing odorous components in the airflow in addition to dust.
[0024]
The blower mounting portion 24 is provided on the back surface of the filter box 23. The electric blower 11 is connected to the attachment portion 24.
[0025]
The separation cylinder 31 includes a cyclone upstream portion 31 a formed at one end portion in the axial direction and a cyclone downstream portion 31 b formed at the other end portion in the axial direction of the separation cylinder 31. The separation cylinder 31 is attached to the base 21 on the base 22 and on the upstream side of the filter box 23.
[0026]
The cyclone upstream part 31a has a truncated cone part and a terminal part 32 continuous with the terminal part of the truncated cone part. The frustoconical portion is formed by gradually increasing the cross-sectional area in the direction orthogonal to the axial direction from the inlet side end wall 33 toward the cyclone downstream portion 31b. The area gradually increases toward the downstream side. As shown in FIG. 2 and FIG. 6A and the like, the end portion 32 of the cyclone upstream portion 31 a is formed by gradually increasing the radius around the axis of the separation cylinder 31. On the outer surface of the inlet-side end wall 33 of the cyclone upstream portion 31a, a cylindrical airflow inlet 34 that extends in the axial direction while sharing the axis of the separation cylinder 31 is provided, for example, integrally. The air flow inlet 34 is disposed at one end of the separation cylinder 31 in the axial direction, and the dust suction port 7 of the front case 6 is connected to the air inlet 34 as the cleaner body 2 is assembled.
[0027]
The cyclone downstream portion 31b has a separation cylinder 35 whose diameter does not change and an air flow outlet 36 formed of a cylinder. The separation cylinder 35 shares the axis of the separation cylinder 31 and is continuously provided on the downstream side of the end portion 32, and the downstream end of the separation cylinder 35 is supported by the filter box 23. ing. The air flow outlet 36 provided at the other axial end of the separation cylinder 31 is disposed concentrically within the separation cylinder 35 sharing the axis of the separation cylinder 31. The air flow outlet 36 communicates with the inside of the filter box 23 and is supported by the box 23. Thereby, the airflow that has passed through the airflow outlet 36 is sucked into the filter box 23.
[0028]
As shown in FIG. 5 and the like, the spiral wing 41 is provided with a single wing plate 43 having a spiral shape that is twisted at 360 ° or more around a central shaft 42 whose diameter gradually increases from one end to the other end. In addition, a slanted guide 44 that is continuous with the tip of the blade plate 43 is provided at one end of the central shaft 42 having a small diameter. As shown in FIGS. 3 and 4, the spiral blade 41 is inserted into the cyclone upstream portion 31a so that the guide 44 faces the airflow inlet 34 and the blade plate 43 is brought into contact with the inner peripheral surface of the cyclone upstream portion 31a. Installed. By this attachment, a spiral air passage along the blade plate 43 is formed in the cyclone upstream portion 31a. The downstream end of the central shaft 42 is separated in the axial direction with respect to the airflow outlet 36, and the airflow outside the airflow outlet 36 is the airflow outside the airflow outlet 36 at the radial center of the cyclone downstream portion 31 b through this separated portion. The outlet 36 is sucked.
[0029]
The first dust outlet 45 communicates the cyclone upstream portion 31 a and the first dust reservoir 51. Specifically, as shown in FIGS. 3 and 6 (A), the blade 43 portion whose angle twisted with respect to the guide 44 exceeds 360 °, more preferably the end portion 32 and the first dust of the cyclone upstream portion 31a. A first dust outlet 45 is provided in connection with the reservoir 51. The first dust outlet 45 opens in the circumferential direction of the terminal end portion 32 formed by gradually increasing the radius around the axis of the separation cylinder 31 and extends in the tangential direction of the peripheral wall of the terminal end portion 32. It is made with a lead-out wall 46. As a preferred example, the first dust outlet 45 extends in the vertical direction, and has an upper end connected to the terminal end portion 32 and a lower end connected to the first dust reservoir 51. Thereby, it is possible to guide the separated dust to the first dust reservoir 51 using its weight or the like.
[0030]
The second dust outlet 48 communicates with the cyclone downstream part 31 b and the second dust reservoir 55. Specifically, as shown in FIGS. 4 and 6B, the second dust outlet 48 is provided in the downstream portion of the separation cylinder 35 so as to open in the radial direction of the cylinder 35 . As a preferred example, the second dust outlet 48 extends in the vertical direction, and has an upper end connected to the separation cylinder 35 and a lower end connected to the second dust reservoir 55. Thereby, it is possible to guide the separated dust to the second dust reservoir 55 using its weight or the like. The first and second dust outlets 45 and 48 are arranged in series along the axial direction of the separation cylinder 31, in other words, in the flow direction of the airflow that goes straight through the cylinder 31.
[0031]
By operating the electric blower 11, the electric vacuum cleaner 1 having the above-described configuration can clean dust by sucking dust on the surface to be cleaned together with air through a suction port body (not shown) and the air flow introducing means 8 .
[0032]
Specifically, the dust-containing airflow sucked into the airflow inlet 34 of the separation device 12 from the dust suction port 7 by the suction force of the electric blower 11 swirls in the cyclone upstream portion 31a along the spiral blade plate 43, and then It swirls along the inner peripheral surface of the separation cylinder 35 of the cyclone downstream part 31b continuous to the rear side of the blade plate 43, and further passes through the air flow outlet 36 in the cyclone downstream part 31b to the outside of the separation cylinder 31. leak. The airflow thus discharged passes through the filter box 23 and is sucked into the electric blower 11, and then exits the electric blower 11 and is discharged out of the cleaner body 2.
[0033]
As described above, the airflow flowing from the airflow inlet 34 and flowing while being swung by the blade plate 43 in the cyclone upstream portion 31a flows out from the airflow outlet 36 through the cyclone downstream portion 31b positioned in the traveling direction in the cyclone upstream portion 31a. Is done. That is, the airflow from the separation cylinder 31 to the electric blower 11 flows substantially straight.
[0034]
Such a straight flow is a spiral air flow in the cyclone upstream portion 31a, and has a straight travel direction component along the axial direction of the separation cylinder 31 and a centrifugal direction component along the inclination of the blade plate 43. is doing. In particular, in the present embodiment, the centrifugal direction component is generated based on the air flow that is going straight ahead toward the air flow outlet 36, and therefore the straight travel direction component is larger. For this reason, a pressure loss is small compared with the case where airflow reverses. In addition, since the airflow inlet 34 extends in the axial direction of the separation cylinder 31, the pressure loss when the airflow flows from the inlet 34 into the cyclone upstream portion 31a is small. For this reason, the suction work rate of the electric blower 11 can be increased, and the dust suction performance can be improved accordingly.
[0035]
As described above, the centrifugal action acts on the dust contained in the airflow by the spiral airflow containing a large amount of the straight component in the cyclone upstream portion 31a. However, since it is practically impossible to make the axial length of the blade plate 43 unnecessarily long in consideration of the length of the vacuum cleaner main body 2, the number of times the airflow is swung by the blade plate 43 is as small as 1 to several times at most. .
[0036]
For this reason, it is difficult to move all types of dust to the inner peripheral surface of the separation cylinder 31 by applying sufficient centrifugal force to all types of dust in the airflow. Specifically, at this stage, light dust such as fine paper dust, lint and hair with the property of easily riding in the airflow and moving to the inner peripheral surface of the separation cylinder 31 is not allowed. Is possible. However, it is difficult to bring all heavy dust such as sand that is difficult to get into the airflow and relatively large dust to the inner peripheral surface of the separation cylinder 31 .
[0037]
By the way, the first dust outlet 45 is provided in the intermediate portion in the axial direction of the separation cylinder 31, and is a tangential direction of the separation cylinder 31, more precisely, a peripheral wall whose radius of the end portion 32 of the cyclone upstream portion 31a is enlarged. It has the derivation | leading-out wall 46 extended in a tangential direction. For this reason, light dust represented by, for example, fluttered paper waste mainly flowing along the inner peripheral surface of the terminal end portion 32 passes along the outlet wall 46 due to its inertia, passes through the first dust outlet 45, and passes through the first dust. It can be discharged to the receiving part 51. At the same time, part of the heavy dust that has already reached the inner surface of the peripheral wall where the radius of the terminal portion 32 is enlarged can be similarly discharged through the first dust outlet 45 to the first dust receiving portion 51.
[0038]
In the case of taking out the dust at the first dust outlet 45, the first dust receiving portion 51 is in a closed space and the wind does not pass therethrough, and therefore the first dust receiving portion 51 tends to be hard to receive dust. In spite of this, the dust that has swirled and is attracted to the inner peripheral surface of the upstream portion 31a of the cyclone is guided along the outlet wall 46 by its inertia. Can be discharged to the first dust receiving portion 51.
[0039]
The dust that has not been discharged from the cyclone upstream portion 31a to the first dust receiving portion 51 travels straight and flows into the cyclone downstream portion 31b. Since the airflow swirls along the inner peripheral surface of the separation cylinder 35 in which the diameter does not change in the cyclone downstream portion 31b (that is, the air passage cross-sectional area does not expand), the number of times and the velocity of the airflow here are the upstream portion of the cyclone. Increase compared to 31a. Thereby, the centrifugal separation effect | action stronger than the cyclone upstream part 31a can be provided to the dust in the cyclone downstream part 31b. For this reason, heavy dust such as sand is reliably brought to the inner peripheral surface of the separation cylinder 35 and passed through the second dust outlet 48 through the path indicated by the arrow in FIG. The portion 55 can be reliably discharged.
[0040]
The airflow from which the dust is separated in the cyclone downstream portion 31b in this way flows out through the airflow outlet 36 along the traveling direction of the airflow in the cyclone upstream portion 31a, and is directly drawn into the electric blower 11 through the filter box 23. It is. Fine and extremely light dust contained in the suction airflow is captured by the filter 26 in the filter box 23.
[0041]
As described above, in the vacuum cleaner 1, dust having various properties and physical properties is not taken out from the separation cylinder 31 at a time, but is divided into a plurality of times according to the degree of centrifugation acting on the dust. It is taken out. Specifically, the cyclone upstream part 31a with a small number of airflow swirls and the cyclone downstream part 31b with a large number of airflow swirls are provided with dust outlets 45 and 48 having a structure suitable for the properties and physical properties of the dust. Therefore, dust having properties and physical properties corresponding to each of the first and second dust storage portions 51 and 55 is individually taken out.
[0042]
Since separation is performed in accordance with the nature and physical properties of the dust, the types of dust and the amount of separation that can be actually separated from the straight air stream can be increased. By improving the separation performance, it is possible to suppress early clogging of the filter 26 that deteriorates the suction performance of the electric blower 11, and it is possible to reduce the frequency of maintenance work such as replacement or cleaning of the filter 26 by the user.
[0043]
Moreover, in the present embodiment, the first dust outlet 45 is provided in the cyclone upstream portion 31a where the swirling airflow has a small number of turns, and the second dust outlet 48 is provided in the cyclone downstream portion 31b where the swirling airflow has a large number of turns. The lightly opened paper dust or the like is separated and discharged at the first dust outlet 45 upstream of the second dust outlet 48 disposed in the vicinity of the electric blower 11. Thereby, it is excellent in that it is easy to suppress deterioration of the suction performance of the electric blower 11 by sucking lightly dusted paper dust or the like to the filter 26.
[0044]
The present invention is not limited to the one embodiment. For example, the number of each of the first and second dust outlets and the number of the respective dust reservoirs individually corresponding to them are not limited. The present invention is also applicable to vacuum cleaners other than the canister type, such as stick type, handy type, and upright type vacuum cleaners.
[0045]
【The invention's effect】
ADVANTAGE OF THE INVENTION According to this invention, it is possible to provide the vacuum cleaner which can improve the isolation | separation performance of various types of dust with dust absorption performance.
[Brief description of the drawings]
FIG. 1 is a side view of a vacuum cleaner according to an embodiment of the present invention with a part cut away.
2 is a perspective view showing a cyclone separator provided in the electric vacuum cleaner of FIG. 1. FIG.
FIG. 3 is a perspective view showing the cyclone separator in FIG. 2 with a part cut away.
4 is a perspective view showing the cyclone separator in FIG. 2 with a part cut away. FIG.
5 is an exploded perspective view showing a part of the cyclone separator in FIG. 2; FIG.
6A is a cross-sectional view showing the first dust outlet and the vicinity of the first dust reservoir of the cyclone separator in FIG. 2. FIG.
(B) is sectional drawing which shows the 2nd dust outlet of the cyclone separator of FIG. 2, and the surroundings of a 2nd dust storage part.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 ... Electric vacuum cleaner 2 ... Vacuum cleaner main body 7 ... Dust inlet 11 ... Electric blower 12 ... Cyclone separation apparatus 31 ... Separation cylinder 31a ... Cyclone upstream part 31b ... Cyclone downstream part 32 ... Cyclone upstream end part 33 ... Cyclone upstream The inlet side end wall 34 of the part ... the air flow inlet 35 ... the separation cylinder 36 in the downstream part of the cyclone ... the air flow outlet 41 ... the spiral blade (swirl flow forming means)
45 ... first dust outlet 46 ... outlet wall 48 ... second dust outlet 51 ... first dust reservoir 55 ... second dust reservoir

Claims (3)

Place a straight flow type cyclone separation device upstream of the electric blower attached to the vacuum cleaner body with a dust suction port,
This cyclone separator is
There is a change in the diameter of the frustoconical part provided with the air flow inlet communicating with the dust suction port, the upstream part of the cyclone having the terminal part continuous with the terminal part of the circular truncated cone part, and the downstream side of the terminal part. A non-separating cylinder and a cyclone downstream part having an air flow outlet provided in the separating cylinder and imparting a stronger centrifugal separation action than the upstream part of the cyclone, and the upstream part of the cyclone forms an axial end portion The separation cylinder in which the downstream portion of the cyclone forms the other end portion in the axial direction, wherein the air flow inlet is disposed at one axial end portion of the separation cylinder and the separation is disposed on the electric blower side The separation cylinder provided with the air flow outlet at the other axial end of the cylinder;
A swirl flow forming means for swirling the dust-containing air provided in the upstream portion of the cyclone and introduced through the air flow inlet in the separation cylinder;
A first dust outlet that is formed with an outlet wall extending tangentially of the peripheral wall of the end portion is connected to the end portion of the cyclone upstream portion,
A second dust outlet formed in the downstream portion of the separation cylinder so as to open in the radial direction of the separation cylinder ;
A first dust storage part that is provided around the separation cylinder and stores dust that has passed through the first dust outlet;
A second dust storage part that is provided around the separation cylinder and stores dust that has passed through the second dust outlet;
Vacuum cleaner equipped with. The vacuum cleaner according to claim 1, wherein the air flow outlet is concentrically disposed in the separation cylinder . The swirl flow forming means is provided in the cyclone upstream portion in a spiral shape twisted by 360 degrees or more, and a spiral air passage for swirling dust-containing air introduced through the air flow inlet is provided in the cyclone upstream. The electric vacuum cleaner according to claim 1 or 2, wherein a spiral wing is formed in the section .

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