JP4941537B2 - Electric vacuum cleaner - Google Patents

Description

  The present invention relates to a vacuum cleaner, and more particularly to a vacuum cleaner provided with a cyclone separator.

  Conventionally, this type of vacuum cleaner has, for example, "having a housing having intake means for fluid containing fine particles and discharge means for cleaned fluid, and means for generating a primary vortex in the incoming fluid, and The housing includes a separation region including a first separation chamber and a second separation chamber each connected to a particulate collection means, and a coupling means for generating a secondary vortex flow in the second separation chamber, and applies to particulates having different weights. There is known an apparatus for separating fine particles into a first separation chamber and a second separation chamber due to a difference in inertial force (see, for example, Patent Document 1).

Japanese translation of PCT publication No. 2002-503541 (summary)

  In the prior art disclosed in Patent Document 1 described above, since a vortex is generated in the second separation chamber to collect the fine particulate matter, there is much airflow inflow into the second separation chamber, and the suction force of the outlet is increased. Has a large effect on the fine particulate matter, and there is a problem that the fine particulate matter once separated from the air flow in the first separation chamber is re-scattered. In addition, because the outlet is opened in the axial direction with respect to the housing, the airflow flows into the swirl chamber with a large axial speed, so the speed in the swiveling direction (swirl speed) is small and fine particles. There was a problem that the centrifugal force for separating the substance was insufficient and the collection performance was low.

  The present invention has been made to solve the above-described problems, and an object of the present invention is to provide a vacuum cleaner capable of efficiently centrifuging garbage and collecting it without re-scattering.

The vacuum cleaner according to the present invention is
A suction port for sucking dust-containing air from the outside;
An electric blower that generates intake air;
A cyclone portion disposed between the suction port body and the electric blower;
With
The cyclone part is
An inlet for taking in dusty air ;
A swirl chamber for swirling the dust-containing air taken in from the inlet;
A first opening formed by opening a part of the side wall of the swirl chamber;
A first dust case provided outside the swirl chamber and capturing dust separated from the swirling airflow in the swirl chamber through the first opening ;
A discharge port body that is provided so as to protrude into the swirl chamber, and at least a portion of the side wall is disposed to face the first opening;
A plurality of holes formed on a side wall of the discharge port body for discharging the air in the swirl chamber to the outside of the swirl chamber;
With
The hole is being formed in a region excluding a portion near the first opening of the side wall of the outlet body.

  According to the vacuum cleaner which concerns on this invention, by employ | adopting said structure, it becomes possible to centrifuge efficiently and to collect in a 1st dust case, without being scattered again.

It is a figure showing the whole vacuum cleaner composition concerning the present invention. It is a top view of the cleaner body 5 of the electric vacuum cleaner shown in FIG. It is AA arrow sectional drawing of FIG. It is bb sectional drawing of FIG. It is a perspective view which shows the external appearance of the cyclone dust collector 50 which is the principal part of the vacuum cleaner main body 5 of the electric vacuum cleaner shown by FIG. It is a front view of the cyclone dust collector 50 of the vacuum cleaner which concerns on this invention. It is a rear view of the cyclone dust collector 50 of the vacuum cleaner which concerns on this invention. It is a top view of the cyclone dust collecting apparatus 50 of the vacuum cleaner which concerns on this invention. FIG. 8 is a cross-sectional view taken along arrow AA in FIG. 7 in the first embodiment. FIG. 8 is a cross-sectional view taken along arrow BB in FIG. 7 in the first embodiment. It is CC sectional view taken on the line of FIG. 8 in Embodiment 1. FIG. FIG. 8 is a cross-sectional view taken along the arrow D-D in FIG. 7 in the first embodiment. FIG. 8 is a partial cross-sectional view taken along the line DD of FIG. 7 in the first embodiment. FIG. 8 is a partial cross-sectional view taken along the line DD in FIG. 7 that does not correspond to the first embodiment. FIG. 8 is a cross-sectional view taken along arrow EE in FIG. 7 in the first embodiment. FIG. 9 is a partial cross-sectional view taken along the line EE of FIG. 7 in the first embodiment. It is the EE arrow directional cross-section partial figure of FIG. 7 which does not correspond to Embodiment 1. FIG. FIG. 8 is a cross-sectional view taken along the line FF in FIG. 7 in the first embodiment. 2 is an exploded perspective view of a cyclone dust collecting apparatus 50 according to Embodiment 1. FIG. FIG. 8 is a cross-sectional view taken along arrow AA in FIG. 7 in the second embodiment. FIG. 9 is a cross-sectional view taken along the line CC of FIG. 8 in the second embodiment. FIG. 8 is a cross-sectional view taken along the line DD of FIG. 7 in the second embodiment. FIG. 9 is a cross-sectional view taken along arrow EE in FIG. 7 in the second embodiment. FIG. 8 is a cross-sectional view taken along the line FF in FIG. 7 in the second embodiment. FIG. 8 is a partial cross-sectional view taken along arrows AA in FIG. 7 in the second embodiment. FIG. 8 is a partial cross-sectional view taken along arrows AA in FIG. 7 in the second embodiment. FIG. 8 is a partial cross-sectional view taken along arrows AA in FIG. 7 in the second embodiment. FIG. 8 is a partial cross-sectional view taken along arrows AA in FIG. 7 in the second embodiment. It is an AA arrow fragmentary sectional view which does not correspond to Embodiment 2. FIG. It is an AA arrow fragmentary sectional view which does not correspond to Embodiment 2. FIG. It is a disassembled perspective view of the cyclone dust collector 50 in Embodiment 2. FIG.

Embodiment 1 FIG.
Embodiment 1 of the present invention will be described below with reference to the drawings.
FIG. 1 is a diagram showing an overall configuration of a vacuum cleaner according to the present invention.
As shown in FIG. 1, the electric vacuum cleaner 100 includes a suction port body 1, a suction pipe 2, a connection pipe 3, a hose 4, and a cyclonic cleaner body 5. The suction inlet 1 sucks in dust and air containing dust on the floor. One end of a straight cylindrical suction pipe 2 is connected to the outlet side of the suction port body 1. A handle 2a is provided at the other end of the suction pipe 2, and one end of the connection pipe 3 that is slightly bent in the middle is connected. One end of a flexible bellows-like hose 4 is connected to the other end of the connection pipe 3. Furthermore, the vacuum cleaner main body 5 is connected to the other end of the hose 4. The suction port body 1, the suction pipe 2, the connection pipe 3, and the hose 4 constitute a part of a flow passage for allowing dust-containing air to flow from the outside to the inside of the cleaner body 5.

FIG. 2 is a top view of the cleaner body 5 of the electric vacuum cleaner shown in FIG. 3 is a cross-sectional view taken along line AA in FIG. 2, and FIG. 4 is a cross-sectional view taken along line bb in FIG.
As shown in FIGS. 2 to 4, the vacuum cleaner body 5 of the vacuum cleaner 100 includes a suction air passage 49, a cyclone dust collecting device 50, an exhaust air passage 51, a filter 52, an electric blower 53, And an exhaust port 54. In addition, the vacuum cleaner body 5 includes a wheel 55, a cord reel (not shown), and the like at the rear part thereof. The cyclone dust collecting apparatus 50 includes a cyclone unit 10 and a second cyclone unit 20 provided in parallel with the cyclone unit 10.
The cyclone unit 10 includes an inlet 11, a swirl chamber 12, a zero-order dust case 114, a primary dust case 14, and a discharge port body 15. The second cyclone unit 20 includes a second inlet 21, a second swirl chamber 22, a secondary dust case 24, and a second outlet 25. The primary dust case 14 and the secondary dust case 24 are formed as one case component. Moreover, the opening part of the lower end part of the 0th-order dust case 114, the primary dust case 14, and the secondary dust case 24 is comprised by the dust case cover 31 (refer FIG. 2, FIG. 5). The zero-order dust case 114 corresponds to the first dust case of the present invention, and the primary dust case 14 corresponds to the second dust case of the present invention.

  In addition, an intermediate air passage 32 that communicates the discharge port body 15 and the second inlet 21 is provided at the upper part of the cyclone unit 10. Further, an exhaust air passage 51 is provided in the upper part of the second cyclone unit 20 so as to be continuous with the second exhaust port 25. Thereby, the air flowing in from the outside of the cleaner body 5 is drawn into the intake air passage 49, the inflow port 11, the swirl chamber 12, the discharge port body 15, the intermediate air passage 32, the second inflow port 21, the second swirl chamber 22, After passing through the second discharge port 25 in order, it is configured to be discharged from the cleaner body 5 through an exhaust path including the exhaust air passage 51, the filter 52, the electric blower 53 and the exhaust port 54.

  FIG. 5 is a perspective view showing an appearance of a cyclone dust collecting device 50 which is a main part of the cleaner body 5 of the electric vacuum cleaner shown in FIG. 6 is a front view of the cyclone dust collector 50, FIG. 7 is a rear view of the cyclone dust collector 50, and FIG. 8 is a plan view of the cyclone dust collector 50. 9 is a cross-sectional view taken along the line AA in FIG. 7, FIG. 10 is a cross-sectional view taken along the line BB in FIG. 7, FIG. 11 is a cross-sectional view taken along the line C-C in FIG. 7 is a sectional view taken along the arrow D-D in FIG. 7, FIG. 13 is a partial sectional view taken along the arrow D-D in FIG. 7, FIG. 15 is a sectional view taken along the arrow EE in FIG. 18 is a partial cross-sectional view taken along the line E-E, FIG. 18 is a cross-sectional view taken along the line F-F in FIG. 7, and FIG. 19 is an exploded perspective view of the cyclone dust collector 50. 14 is a partial sectional view taken along the line DD of FIG. 7 (Comparative Example 1), which does not correspond to the first embodiment, and FIG. 17 is a sectional view taken along the line E-E of FIG. It is a figure (comparative example 2).

Next, the structure of the cyclone dust collector 50 is demonstrated using FIGS.
As described above, the cyclone dust collecting device 50 of the electric vacuum cleaner 100 includes the cyclone unit 10 and the second cyclone unit 20 provided in parallel with the cyclone unit 10. An intermediate air passage 32 is provided at the upper part of the cyclone unit 10, and this intermediate air passage 32 is continuously connected to the second inlet 21 provided at the upper part of the second cyclone unit 20. The second cyclone unit 20 has a separation performance equal to or higher than that of the cyclone unit 10.

  As described above, the second cyclone unit 20 is installed at the downstream position of the cyclone unit 10. For this reason, the second cyclone unit 20 collects garbage that could not be collected by the cyclone unit 10, and The air discharged from the vacuum cleaner can be further purified.

  The cyclone unit 10 includes an inlet 11 that takes in dust-containing air from the suction air passage 49, and a swirl chamber 12 that turns the dust-containing air introduced from the inlet 11 by connecting the inlet 11 in a substantially tangential direction. Then, after the intake air flowing in from the inlet 11 is swirled to separate the dust, the intake air is exhausted from the discharge port body 15. Further, the swirl chamber 12 includes a 0th-order opening 113 formed by opening a part of the side wall thereof, and a 0th-order dust case 114 provided outside the 0th-order opening 113 in the radial direction. The discharge port body 15 is provided so as to protrude into the swirl chamber 12, and as shown in FIGS. 15 and 16, a part of the side wall of the discharge port body 15 near the zero-order opening 113, for example, indicated by reference numeral 15c. Micropores are provided in the area excluding the portion. The fine hole formed in the side wall of the discharge port body 15 is constituted by, for example, a hole that communicates the inside and the outside of a thick wall surface. The 0th-order opening 113 corresponds to the first opening of the present invention.

Here, an outline of the operation of the cyclone unit 10 will be described.
When the cyclone unit 10 takes in the dust-containing air from the inlet 11 through the intake air passage 49, the dust-containing air flows almost horizontally along the side wall of the swirl chamber 12 and becomes a swirling air current, and the forced air near the center axis is forced. While forming the vortex region and the quasi-free vortex region on the outer periphery thereof, it flows downward due to its path structure and gravity. At this time, since the centrifugal force acts on the dust, for example, dust (hereinafter referred to as “garbage A”) having a relatively large size and specific gravity such as hair, bag, sand (relatively large sand) or the like is formed on the inner wall of the swirl chamber 12. The air is separated from the intake air and is captured by the zero-order dust case 114 through the zero-order opening 113 and deposited. Further, the remaining dust travels below the swirl chamber 12 on the descending swirl flow. As a result, cotton dust or fine sand dust (hereinafter referred to as “garbage B”) that is light and easy to ride in the airflow and is bulky is sent into the primary dust case 14 through the primary opening 13 (see FIG. 9). Furthermore, it is driven above the primary dust case 14 by wind pressure, where it is deposited and compressed. The air from which the dust A and the dust B are removed rises along the central axis of the cylinder of the cyclone unit 10 and is discharged from the discharge port body 15. The air discharged from the discharge port body 15 flows into the second swirl chamber 22 via the intermediate air passage 32 via the second inlet 21 of the second cyclone unit 20 and flows into the second swirl chamber 22. Falls while turning, passes through the secondary dust case 24, then rises and is discharged from the second discharge port 25, and then is exhausted from the exhaust air passage 51, the filter 52, the electric blower 53, and the exhaust port 54. It is discharged from the cleaner body 5 via a route.

In the first embodiment, the discharge port body 15 of the cyclone unit 10 is configured as described above, and the side wall thereof has a fine hole in a region excluding a part 15c in the vicinity of the zero-order opening 113. As a result, the suction force in the axial direction is suppressed to increase the turning force on which the dust acts, and the side wall of the discharge port 15 is fine with respect to the dust A flying to the zero-order dust case 114 through the zero-order opening 113. The suction force from the hole is suppressed. For this reason, it becomes possible to collect the garbage A in the zero-order dust case 114 reliably (refer FIG. 16). On the other hand, as shown in FIG. 17, when fine holes are provided also in the vicinity of the zero-order opening 113, the suction force from the fine holes on the side wall of the discharge port body 15 acts greatly on the dust A. Therefore, the dust A is hardly collected in the zero-order dust case 114, and the dust A once collected in the zero-order dust case 114 is likely to be scattered again.
Further, in the inversion type cyclone unit 10 as shown in the first embodiment, the discharge port body 15 is configured to protrude from the upper part of the swirl chamber 12, but the side wall of the discharge port body 15 with respect to the garbage A Since the suction force from the fine holes is suppressed, the dust A can be reliably collected in the zero-order dust case 114 even if the zero-order opening 113 is installed at a height close to the discharge port body 15. is there. For this reason, the depth of the 0th-order dust case 114 can be deepened, and the re-scattering of the dust A can be further suppressed to improve the collection performance.

  Further, in the first embodiment, as shown in FIG. 12 and FIG. 13, the discharge port body 15 has fine holes in the side wall thereof in a region excluding a part near the inflow port 11, for example, a portion indicated by reference numeral 15d. Is provided.

  As described above, by providing a fine hole in a region of the side wall of the discharge port body 15 excluding a part 15d near the inflow port 11, the intake air flowing in from the inflow port 11 can be directly sucked into the discharge port body 15. It is suppressed and the flow in the turning direction is further enhanced to increase the centrifugal force acting on the garbage A, and the collection performance can be further improved (see FIG. 13). On the other hand, when a fine hole is also provided in the vicinity of the inflow port 11, as shown in FIG. 14, a part of the air flow is directly discharged from the discharge port body 15 without swirling in the swirl chamber 12. At the same time, since an air flow in the direction opposite to the turning direction is also generated, the centrifugal force acting on the garbage A is reduced, and the garbage A is hardly collected.

Further, in the first embodiment, the swirl chamber 12 includes a primary opening 13 formed by opening the lower part thereof (see FIG. 9), and a primary dust case 14 is provided below the primary opening 13. It has been.
Accordingly, the primary dust case 14 can collect the dust B (the dust having a relatively small surface area and small air resistance) that cannot be collected by the zero-order dust case 114. The primary opening 13 corresponds to the second opening of the present invention.

In the above-described first embodiment, the configuration in which the primary opening 13 is provided in the lower part of the swirl chamber 12 and the primary dust case 14 is provided below the primary opening 13 has been described. However, the primary dust case 14 is not provided. Even in this case, the configuration of the second cyclone unit 20 and the cyclone unit 10 described above has a certain effect.
Further, in the above-described first embodiment, the configuration in which the second cyclone unit 20, the filter 52, and the electric blower 53 are sequentially arranged at the downstream position of the cyclone unit 10 has been described, but the present invention is limited to such a configuration. For example, even in a configuration without the second cyclone unit 20, there is a certain effect.

Embodiment 2. FIG.
The second embodiment of the present invention will be described below with reference to FIGS. Note that the same name and reference numeral are used for the same structure as that described in Embodiment 1.
20 is a cross-sectional view taken along line AA of FIG. 7 in the second embodiment, FIG. 21 is a cross-sectional view taken along line CC of FIG. 8, and FIG. 22 is a cross-sectional view taken along line DD of FIG. 23 is a cross-sectional view taken along the line EE in FIG. 7, FIG. 24 is a cross-sectional view taken along the line FF in FIG. 7, and FIGS. 25 to 28 are partial cross-sectional views taken along the line A-A in FIG. FIG. 31 is an exploded perspective view of the cyclone dust collector 50. 29 and 30 are partial cross-sectional views taken along arrows AA not corresponding to the second embodiment.

  The cyclone unit 10 includes an inlet 11 for taking in dust-containing air from the intake air passage 49, and a swirl chamber 12 for turning the dust-containing air introduced from the inlet 11 by connecting the inlet 11 in a substantially tangential direction, After the intake air flowing in from the inflow port 11 is swirled to separate the dust, the intake air is exhausted from the discharge port body 15. In addition, the cyclone unit 10 includes a 0th-order opening 113 formed by opening a part of the side wall of the swirl chamber 12, and a 0th-order dust case 114 provided radially outside the 0th-order opening 113. The discharge port body 15 is provided so as to protrude into the swirl chamber 12. Further, the discharge port body 15 is configured by a substantially conical conical mesh 15a having a plurality of fine holes in a part of the side wall, and at least a height position in the axial direction of at least a part of the substantially conical surface of the conical mesh 15a. Is arranged so as to be within the opening range A in the axial direction of the zero-order opening 113 (see FIG. 25).

As described above, a part of the side wall of the discharge port body 15 is configured by the substantially conical conical mesh 15a having a large number of fine holes, and the height in the axial direction of at least a part of the substantially conical surface of the conical mesh 15a. By setting the position within the opening range A in the axial direction of the zero-order opening 113, the zero-order opening 113 and the discharge port body are suppressed while suppressing the suction force in the axial direction and increasing the turning force on which dust acts. The suction force from the fine holes on the side wall of the discharge port 15 to the dust A that is thrown into the zero-order dust case 114 while securing the distance from the fine holes on the side wall 15 is suppressed, so that the dust A can be reliably removed from the zero-order dust case 114. Can be collected.
Further, in the reversible cyclone unit 10 as shown in the second embodiment, the discharge port body 15 is configured to protrude from the upper part of the swirl chamber 12, but the side wall of the discharge port body 15 with respect to the garbage A Since the suction force from the fine holes is suppressed, the dust A can be reliably collected in the zero-order dust case 114 even if the zero-order opening 113 is installed at a height close to the discharge port body 15. . For this reason, the depth of the 0th-order dust case 114 can be deepened, and the re-scattering of the dust A can be further suppressed to improve the collection performance.
Furthermore, since the flow that reaches the center of the swirl chamber 12 can be smoothly taken in by the conical mesh 15a by reversing the air flow that has reached while swirling below the swirl chamber 12, the collection performance is not disturbed. Can be improved.
Further, since the conical mesh 15a has a substantially conical shape, when the long thread-like dust A such as hair is entangled with the side wall of the discharge port body 15, the entangled dust A is moved along the tip direction of the cone. There is also an advantage that it can be easily removed. (The effect of this paragraph above is referred to as effect A)

  Further, the discharge port body 15 is configured by a substantially cylindrical cylindrical mesh 15b having a part of the side wall provided continuously with the large end of the conical mesh 15a and having a large number of fine holes. Is the height range C in the axial direction of the cylindrical mesh 15b, and the height position D in the axial direction of the large end of the conical mesh 15a is the opening range A in the axial direction of the zero-order opening 113. It is outside (see FIG. 25).

  Thereby, since the airflow which entered from the inflow port 11 can rotate smoothly, the centrifugal force which acts on the garbage A increases and it can improve collection performance. In addition, since only the conical mesh 15a is disposed in the opening range A in the axial direction of the zero-order opening 113, the distance between the zero-order opening 113 and the minute hole on the side wall of the discharge port body 15 can be more reliably determined. The centrifugal force acting on the dust A is increased and the collection property is improved while suppressing the suction force from the fine holes on the side wall of the discharge port 15 to the dust A flying to the zero-order dust case 114. be able to.

In addition, the relationship between the height positions E and D in the axial direction of the small end and the large end of the conical mesh 15a and the opening range A in the axial direction of the zero-order opening 113 is not limited to the above.
For example, as shown in FIG. 26, the height positions E and D in the axial direction of both the small end and the large end of the conical mesh 15a may be within the opening range A in the axial direction of the zero-order opening 113.
Further, as shown in FIG. 27, the axial position of the small end of the conical mesh 15a is set while the height position D in the axial direction of the large end of the conical mesh 15a is within the opening range A in the axial direction of the zero-order opening 113. The height position E may be outside the opening range A in the axial direction of the zero-order opening 113.
In addition, as shown in FIG. 28, the conical mesh 15a is set such that the height positions E and D in the axial direction of both the small end and the large end of the conical mesh 15a are outside the opening range A in the axial direction of the zero-order opening 113. The height position E of the small end in the axial direction may be lower than the height position of the lower end of the zero-order opening 113 in the axial direction.
That is, if the height position in the axial direction of at least a part of the substantially conical surface of the conical mesh 15a is within the opening range A in the axial direction of the zero-order opening 113, the zero-order opening 113 and the discharge port body 15 The distance from the fine holes in the side wall can be secured, and the zeroth-order opening 113 can be arranged as high as possible, and the same effect as the above-described effect A can be obtained.

  On the other hand, in FIG. 29 (Comparative Example 1), the height position in the axial direction of the substantially conical surface of the conical mesh 15a is outside the opening range A in the axial direction of the zero-order opening 113, and the zero-order opening The distance between the portion 113 and the minute hole in the side wall of the discharge port body 15 cannot be secured. Further, in FIG. 30 (Comparative Example 2), since the 0th-order opening 113 cannot be disposed at a high position, the depth of the 0th-order dust case 114 cannot be increased. For this reason, in the structural example of FIG.21 and FIG.22, the effect which suppresses the re-scattering of the above-mentioned refuse A is not acquired.

  Further, in the second embodiment, the swirl chamber 12 is configured with a cylindrical portion 12b having a substantially cylindrical side wall and a conical portion 12a having a shape obtained by cutting off the tip of a substantially cone whose diameter decreases as it approaches the tip. The primary opening 13 is provided at the small diameter side end of the conical portion 12a (see FIGS. 20 and 21).

  As a result, when the garbage B reaches the lower part of the swirl chamber 12 while swirling along the inner wall of the swirl chamber 12 by its own inertial force and centrifugal force, the swirl speed decreases due to wall friction and air resistance. By reducing the turning radius by the substantially conical wall surface of the conical portion 12a, a centrifugal force proportional to the square of the turning speed and inversely proportional to the turning radius can be maintained. Can be efficiently collected in the primary dust case 14. Furthermore, there is an effect that the amount of air flowing into the primary dust case 14 is suppressed and the re-scattering of the waste B reaching the primary dust case 14 is suppressed.

  In the second embodiment, the inclination angle θ1 of the conical portion 12a with respect to the center of the swirl chamber 12 is substantially equal to or less than the inclination angle θ2 of the conical mesh 15a with respect to the central axis of the swirl chamber 12 (FIG. 20). reference).

  This suppresses the pressure loss without reducing the cross-sectional area of the swirling air passage (the air passage excluding the discharge port body 15) in the swirling chamber 12 at the conical portion 12a, and the upward flow in the center of the swirling chamber 12 It is possible to secure the air path, prevent interference between the swirling flow and the upflow, and prevent the airflow from being disturbed, thereby improving the collection performance. In addition, the distance between the wall surface of the conical portion 12a and the conical mesh 15a cannot be reduced, and the dust B swirling along the inner wall surface of the conical portion 12a can be suppressed from being sucked from the conical mesh 15a. .

In the second embodiment, the zero-order opening 113 is provided in the cylindrical portion 12b of the swirl chamber 12 (see FIGS. 20 and 21).
As a result, the wall surface drag of the conical portion 12a, particularly the upward component force, is generated, so that the dust A is difficult to move to the conical portion 12a side. A is easily collected in the zero-order dust case 114 via the zero-order opening 113 provided in the cylindrical portion 12b.

In the second embodiment, the primary opening 13 provided in the lower part of the swirl chamber 12 is configured such that the opening area is smaller than the opening area of the zero-order opening 113.
Thereby, the effect of suppressing the amount of air flowing into the primary dust case 14 through the primary opening 13 and suppressing the re-scattering of the garbage B reaching the primary dust case 14 is obtained.

  In the first and second embodiments, the second cyclone unit 20 is provided. However, only the cyclone unit 10 may be used, or a plurality of cyclones (second cyclone unit, third cyclone unit) may be used. , ...) may be provided. In addition, since the present invention relates to the structure of the cyclone dust collector, it is not limited to the canister type vacuum cleaner described in the first and second embodiments.

  In the first embodiment and the second embodiment described above, the fine hole on the side wall of the discharge port body 15 is described as a hole that communicates the inside and outside of the thick wall surface, but the configuration is not limited to this. For example, it is good also as a structure which affixed the mesh filter on the frame.

  Further, although the first embodiment and the second embodiment do not refer to the seal structure and the lock structure between the components, the seal structure and the lock structure may disturb the flow of airflow in the cyclone dust collector 50. It is desirable not to install it.

  DESCRIPTION OF SYMBOLS 1 Suction port body, 2 Suction pipe, 3 Connection pipe, 4 Hose, 5 Vacuum cleaner main body, 10 Cyclone part, 11 Inlet, 12 Turning chamber, 12a Conical part, 12b Cylindrical part, 13 Primary opening part, 14 Primary dust case , 15 discharge port body, 15a conical mesh, 15b cylindrical mesh, 20 second cyclone part, 21 second inlet, 22 second swirl chamber, 24 secondary dust case, 25 second discharge port, 31 dust case lid, 32 Intermediate air passage, 49 Suction air passage, 50 Cyclone dust collector, 51 Exhaust air passage, 52 Filter, 53 Electric blower, 54 Exhaust port, 55 Wheels, 100 Vacuum cleaner, 113 0th order opening, 114 0th order dust case .

Claims (11)

A suction port for sucking dust-containing air from the outside;
An electric blower that generates intake air;
A cyclone portion disposed between the suction port body and the electric blower;
With
The cyclone part is
An inlet for taking in dusty air ;
A swirl chamber for swirling the dust-containing air taken in from the inlet;
A first opening formed by opening a part of the side wall of the swirl chamber;
A first dust case provided outside the swirl chamber and capturing dust separated from the swirling airflow in the swirl chamber through the first opening ;
A discharge port body that is provided so as to protrude into the swirl chamber, and at least a portion of the side wall is disposed to face the first opening;
A plurality of holes formed on a side wall of the discharge port body for discharging the air in the swirl chamber to the outside of the swirl chamber;
With
The holes, vacuum cleaner, characterized in that it is formed in an area except a portion near the first opening of the side wall of the outlet body. The holes, vacuum cleaner according to claim 1, characterized in that it is formed in an area except a portion near the inlet of the side wall of the outlet body. The discharge port body is
A substantially conical conical mesh in which the hole is formed in the side wall ;
A substantially cylindrical cylindrical mesh provided so as to be continuous with the large end of the conical mesh and having the hole formed in a side wall;
With
The conical mesh is arranged such that , in the axial direction of the discharge port body, the height position of at least a part of the substantially conical surface is within the opening range of the first opening. The electric vacuum cleaner according to claim 1 or 2. The vacuum cleaner according to claim 3, wherein the inflow port is disposed so as to be within a height range of the cylindrical mesh in the axial direction of the discharge port body . The inlet and the first opening are arranged at different heights in the axial direction of the outlet body,
Claim wherein the conical mesh in the axial direction of the outlet body, the height position of the big end, characterized in that the flow is arranged so as to be between the inlet and the first opening vacuum cleaner according to 4. A second opening formed at the bottom of the swirl chamber;
The vacuum cleaner according to any one of claims 1 to 5, further comprising a second dust case disposed below the second opening. The swirl chamber is composed of a cylindrical portion having a substantially cylindrical shape and a cone portion having a shape obtained by cutting off the tip of a substantially cone whose diameter decreases as it approaches the tip.
7. The second opening formed at the lower portion of the swirl chamber is provided at a small-diameter side end of the conical portion, according to claim 1. Electric vacuum cleaner.   The electric cleaning according to claim 7, wherein an inclination angle of the conical portion with respect to a central axis of the swirl chamber is set to be substantially equal to or less than an inclination angle of the conical mesh with respect to the central axis of the swirl chamber. Machine.   The vacuum cleaner according to claim 7 or 8, wherein the first opening is provided in a cylindrical portion of the swirl chamber.   The second opening formed to open at the lower part of the swirl chamber has an opening area smaller than the opening area of the first opening. The vacuum cleaner according to one item. 2. A second cyclone unit disposed between the cyclone unit and the electric blower, further comprising a second cyclone unit that separates and exhausts dust from the dust-containing air exhausted from the exhaust port body of the cyclone unit. The vacuum cleaner as described in any one of Claims 1-10.

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