CN102821665B - Cyclone separators and electric vacuum cleaners - Google Patents

Abstract

The invention provides a cyclone separation device and an electric dust collector with the cyclone separation device, which can efficiently separate garbage, and reliably collect the garbage in a dust collecting chamber without being clamped on an opening edge of an opening communicating a whirling chamber and the dust collecting chamber. The primary swirling chamber (12) swirls the dust-containing air flowing in from the primary inlet (11), thereby separating dust from the dust-containing air, and discharges the air from which the dust has been removed from the primary discharge port (15). At least a part of the opening edge of the 0-order opening part (113) formed to open on a part of the side wall of the primary swirling chamber (12) is formed in a circular shape on the downstream side of the swirling direction of the dust-containing air. Therefore, the dust separated from the dust-containing air is reliably captured in the 0-time dust collecting chamber (114) without being caught on the opening edge of the 0-time opening (113).

Description

Cyclone separators and electric vacuum cleaners

technical field

The present invention relates to a cyclone separation device and an electric vacuum cleaner equipped with the cyclone separation device.

Background technique

A known device (for example, refer to Patent Document 1) has a housing (corresponding to the primary turning part 12 of the present application. Hereinafter, parts corresponding to the present application are indicated by brackets), and the housing has a fluid containing fine particles. Inlet mechanism and cleaned fluid discharge mechanism, and the device has a mechanism that causes the inflow fluid to undergo a primary vortex, and the housing (primary convoluted part 12) has a first separation chamber that is respectively connected to a particle collection mechanism (primary dust collection chamber 14) and the separation area of the second separation chamber (zero dust collection chamber 114) and the connecting mechanism that generates secondary vortex in the second separation chamber (zero dust collection chamber 114), according to the applied The difference in inertial force on fine particles of different weights separates the fine particles into the first separation chamber (primary dust collection chamber 14 ) and the second separation chamber (0 secondary dust collection chamber 114 ).

prior art literature

Patent Document 1: Japanese National Publication No. 2008-541816 (pages 6 to 8, Fig. 3, Fig. 5)

However, in the prior art disclosed in the aforementioned Patent Document 1, in the connection portion connecting the second separation chamber and the casing, there is a connection portion where garbage (especially cotton dust) gets caught in the casing and comes into contact with the swirling flow. topics on the margins.

Contents of the invention

The present invention was developed to solve the above-mentioned problems, and an object of the present invention is to provide a cyclone separator and an electric vacuum cleaner equipped with the cyclone separator, which can efficiently separate garbage through a swirl chamber without the garbage being caught between the swirl chamber and the vacuum cleaner. The connecting part of the dust collection room reliably collects the garbage into the dust collection room.

The cyclone separation device of the present invention has: an inflow port through which dust-laden air flows in from an external air path; a swirl chamber formed in a substantially cylindrical shape for swirling the dust-laden air flowing in from the inflow port to separate air and dust; and a discharge port , discharging the air separated from the dust-laden air in the swirl chamber; a discharge pipe communicating with the blower generating suction and the discharge port; an opening formed in a part of the side wall of the swirl chamber; The dust collection chamber is provided on the radially outer side of the opening, and at least a part of the opening edge of the opening facing the downstream side of the swirling direction of the suction gas in the swirling chamber is formed with A concave shape that is circular and concave in direction.

The effect of the invention

According to the cyclone separator and the electric vacuum cleaner of the present invention, by adopting the above structure, it is possible to prevent the garbage from being caught on the opening edge of the opening that is the connecting portion between the swirl chamber and the dust collection chamber, and to reliably collect the garbage into the dust collection chamber. .

Description of drawings

Fig. 1 is an external perspective view showing an electric vacuum cleaner according to Embodiment 1 of the present invention.

2 is a perspective view showing a vacuum cleaner main body of the electric vacuum cleaner according to Embodiment 1 of the present invention.

3 is a plan view showing a vacuum cleaner main body of the electric vacuum cleaner according to Embodiment 1 of the present invention.

4 is an a-a sectional view showing a vacuum cleaner main body of the electric vacuum cleaner according to Embodiment 1 of the present invention.

Fig. 5 is a sectional view along b-b showing a vacuum cleaner main body of the electric vacuum cleaner according to Embodiment 1 of the present invention.

6 is a plan view of the vacuum cleaner main body showing a state in which the dust collecting unit of the electric vacuum cleaner according to Embodiment 1 of the present invention is removed.

7 is a perspective view showing the appearance of the dust collecting unit of the electric vacuum cleaner according to Embodiment 1 of the present invention.

8 is a front view showing a dust collecting unit of the electric vacuum cleaner according to Embodiment 1 of the present invention.

9 is a left side view showing the dust collecting unit of the electric vacuum cleaner according to Embodiment 1 of the present invention.

10 is a plan view showing the dust collecting unit of the electric vacuum cleaner according to Embodiment 1 of the present invention.

11 is a cross-sectional view taken along the line A-A showing the dust collecting unit of the electric vacuum cleaner according to Embodiment 1 of the present invention.

12 is a sectional view taken along the arrow B-B showing the dust collecting unit of the electric vacuum cleaner according to Embodiment 1 of the present invention.

13 is a sectional view taken along arrow C-C showing the dust collecting unit of the electric vacuum cleaner according to Embodiment 1 of the present invention.

14 is a cross-sectional view taken along the arrow D-D showing the dust collecting unit of the electric vacuum cleaner according to Embodiment 1 of the present invention.

15 is a cross-sectional view taken along the line E-E showing the dust collecting unit of the electric vacuum cleaner according to Embodiment 1 of the present invention.

Fig. 16 is a cross-sectional view taken along the line F-F showing dust collecting unit 50 of the electric vacuum cleaner according to Embodiment 1 of the present invention.

Fig. 17 is a sectional view taken along the line G-G showing dust collecting unit 50 of the electric vacuum cleaner according to Embodiment 1 of the present invention.

Fig. 18 is an example of a H-H arrow view showing the zero-order opening 113 of the electric vacuum cleaner according to Embodiment 1 of the present invention.

Fig. 19 is an example of an H-H arrow view showing the zero-order opening 113 of the electric vacuum cleaner according to Embodiment 2 of the present invention.

Fig. 20 is an example of a H-H arrow view showing the zero-order opening 113 of the electric vacuum cleaner according to Embodiment 2 of the present invention.

FIG. 21 is an example of the H-H arrow view of the zero-order opening 113 of the present invention.

Fig. 22 is a sectional view taken along the E-E arrow of a dust collection unit 50 other than the present invention.

Fig. 23 is a cross-sectional view of the dust collection unit 50 of the present invention, taken along the line E-E.

Fig. 24 is a perspective view of the dust collection unit 50 according to the present invention when dumping garbage.

Fig. 25 is an exploded view of the dust collecting unit 50 of the present invention.

Detailed ways

Hereinafter, an electric vacuum cleaner equipped with a cyclone separator according to an embodiment of the present invention will be described with reference to the drawings.

Embodiment 1

Fig. 1 is a perspective view showing the appearance of the electric vacuum cleaner of the present invention. As shown in FIG. 1 , an electric vacuum cleaner 100 is composed of a suction port body 1 , a suction pipe 2 , a connecting pipe 3 , a suction hose 4 , and a cyclone-type vacuum cleaner main body 5 . The suction port body 1 sucks dust and dusty air on the ground. One end of a straight cylindrical suction pipe 2 is connected to the outlet side of the suction port body 1 . A handle 2b is provided at the other end of the suction pipe 2. The handle 2b is provided with an operation switch 2a for controlling the operation of the electric vacuum cleaner 100, and one end of a slightly curved connecting pipe 3 is connected in the middle. One end of a flexible, corrugated suction hose 4 is connected to the other end of the connecting pipe 3 . Moreover, the cleaner main body 5 is connected to the other end of the suction hose 4. As shown in FIG. A power cord is connected to the vacuum cleaner main body 5, and the power cord is connected to an external power source. When energized, an electric blower (not shown) is driven to perform a suction operation. The suction port body 1 , the suction pipe 2 , the connecting pipe 3 and the suction hose 4 constitute a part of a suction path for letting dust-laden air flow from the outside of the cleaner main body 5 into the inside.

In addition, FIG. 2 is a perspective view of the cleaner body 5 , and FIG. 3 is a plan view of the cleaner body 5 . In addition, FIG. 4 is a sectional view of the cleaner body 5 of FIG. 3 , and FIG. 5 is a sectional view of b-b of the cleaner body 5 of FIG. 3 . In addition, FIG. 6 is a top view of cleaner main body 5 in a state where dust collecting unit 50 is removed.

As shown in FIGS. 2 to 6 , the vacuum cleaner main body 5 has a suction air path 49 , a dust collecting unit 50 , an exhaust air path 51 , a filter 52 , an electric blower 53 , and an exhaust port 54 . In addition, the cleaner main body 5 has the wheel 55, the cord reel part which is not shown in figure, etc. in the rear part. In addition, the dust collecting unit 50 is constituted by the primary cyclone separation device 10 and the secondary cyclone separation device 20 which is arranged in parallel with the primary cyclone separation device 10 and is connected to the downstream side of the primary cyclone separation device 10 .

The structure, action and effect of each part are as follows. The primary cyclone separation device 10 has a primary inlet 11, a primary swirl chamber 12, a primary opening 113, a primary opening 13, a primary dust collection chamber 114, and a primary dust collection. Chamber 14, primary discharge port 15 and primary discharge pipe 16. In addition, the secondary cyclone separation device 20 has a secondary inlet 21 , a secondary swirling chamber 22 , a secondary opening 23 , a secondary dust collecting chamber 24 , a secondary discharge port 25 , and a secondary discharge pipe 26 . In addition, the 0th dust collection chamber 114 , the primary dust collection chamber 14 , and the secondary dust collection chamber 24 are formed by one box member, and the 0th dust collection chamber 114 is disposed so as to surround the secondary dust collection chamber 24 .

In addition, the primary cyclone separation device 10 is equivalent to the cyclone separation device in the claims, the primary inflow port 11 is equivalent to the inflow port in the claims, the primary swirl chamber 12 is equivalent to the swirl chamber in the claims, and the primary discharge port 15 The primary discharge pipe 16 corresponds to the discharge pipe in the claims, and corresponds to the discharge port in the claims. In addition, the zero-order opening 113 corresponds to the opening in the claims, and the zero-order dust collection chamber 114 corresponds to the dust collection chamber in the claims.

Here, a route for discharging the air that has flowed into the cleaner body 5 to the outside of the cleaner body 5 will be described (see FIGS. 2 to 6 ).

The air that has flowed into the cleaner main body 5 reaches the primary cyclone separation device 10 via the suction air path 49 . In the primary cyclone separation device 10 , the primary inflow port 11 , the primary swirl chamber 12 , and the primary discharge port 15 flow in this order, and the air discharged from the primary discharge port 15 reaches the secondary cyclone separation device 20 through the primary discharge pipe 16 . In the secondary cyclone separation device 20, it flows in the order of the secondary inlet 21, the secondary swirling chamber 22, and the secondary discharge port 25, and the air discharged from the secondary discharge port 25 flows to the exhaust gas through the secondary discharge pipe 26. Wind road 51 side. And this air is exhausted to the exterior of the cleaner main body 5 through the exhaust path comprised by the exhaust air path 51, the filter 52, the electric blower 53, and the exhaust port 54.

Like this, owing to being provided with secondary cyclone separating device 20 at the downstream position of primary cyclone separating device 10, so secondary cyclone separating device 20 captures the rubbish that primary cyclone separating device 10 does not capture completely, can improve as dust collecting unit 50 The collection performance can further clean the air discharged from the cleaner main body 5 .

Hereinafter, the detailed structure of the primary cyclone separation device 10 and the secondary cyclone separation device 20 which comprise the dust collection unit 50 is demonstrated.

FIG. 7 is a perspective view showing the appearance of the dust collecting unit 50 , and FIG. 8 is a front view of the dust collecting unit 50 . FIG. 9 is a left side view of the dust collection unit 50 , and FIG. 10 is a top view of the dust collection unit 50 . Fig. 11 is the A-A sectional view of the dust collection unit 50 of Fig. 8, Fig. 12 is the B-B sectional view of the dust collection unit 50 of Fig. 8, Fig. 13 is the C-C sectional view of the dust collection unit 50 of Fig. 10, Fig. 14 is the dust collection of Fig. 13 The D-D sectional view of unit 50, Fig. 15 is the E-E sectional view of the dust collection unit 50 of Fig. 13, Fig. 16 is the F-F sectional view of the dust collection unit 50 of Fig. 13, Fig. 18 is the H-H figure of 0 secondary opening 113.

First, the basic structure of the primary cyclone separation apparatus 10 is demonstrated using FIG.11, FIG.14, FIG.15, FIG.16, and FIG.18.

The primary cyclone separation device 10 has: a primary inflow port 11 through which dust-laden air from the outside flows in; a primary swirl chamber 12 is formed in a substantially cylindrical shape, communicates with the primary inflow port 11 along a tangential direction, and makes the primary inflow port 11 flow into The dust-laden air whirls to separate air and dust; the primary discharge port 15 discharges the air separated from the dust-laden air in the primary swirl chamber 12 .

In addition, it also has a primary discharge pipe 16 communicating with the secondary inflow port 21 of the secondary cyclone separation device 20 and the primary discharge port 15, and also has: the primary opening 13 opened in the axial direction of the primary swirl chamber 12; The primary dust collecting chamber 14 in which the primary opening 13 communicates with the primary swirling chamber 12; the zero opening 113 opened along the radial direction of the primary swirling chamber 12; the zero primary opening 113 communicating with the primary swirling chamber 12 Dust chamber 114 .

As shown in the enlarged plan view of the zero-order opening 113 in FIG. 18 , at least a part of the opening edge 113a (hereinafter referred to as the opening edge on the downstream side of the swirling direction) on the downstream side in the swirling direction in the primary swirling chamber 12 is formed as a band. There is a rounded shape sunken in the direction of rotation.

In the above structure, most of the garbage flowing into the primary whirling chamber 12 from the primary inflow port 11 (hereinafter referred to as garbage a) passes through the centrifugal force acting on the garbage a, as shown in the garbage track a in Figure 15, from the primary whirling chamber The vortex airflow in the 12 is separated and collected into the 0th dust collection chamber 114 through the 0th opening 113 .

However, a part of garbage (hereinafter referred to as garbage b) is centrifugally separated from the vortex airflow in the primary swirling chamber 12 as shown in the garbage track b in FIG. . At this time, if at least a part of the opening edge 113a on the downstream side of the swirl in the primary swirl chamber 12 is formed in a circular shape with a depression in the swirl direction as described above, as shown by the arrow in FIG. b slides on the swirling downstream opening edge 113a, and can be efficiently collected in the zero-order dust collection chamber 114 without being caught on the swirling downstream opening edge 113a in the middle of the movement.

Conversely, as shown in FIG. 19 , when the swing downstream side opening edge 113 a is curved, the garbage b is caught at the curved position. In addition, as shown in FIG. 20 , when the turning downstream side opening edge 113 a is formed linearly, garbage b may be caught at the end of the linear portion. In this way, when the garbage b is caught on the opening edge 113a on the downstream side of the turning, starting from the caught garbage b, the garbage b flowing into the primary turning chamber 12 from the primary inlet 11 is also accumulated near the opening edge 113a on the downstream side of the turning. , Therefore, even the garbage a is caught on the opening edge 113a on the downstream side of the turn.

Therefore, if at least a part of the swirling downstream side opening edge 113a in the primary swirling chamber 12 is formed into a circular shape with a depression in the swirling direction as described above, the garbage b is prevented from being caught by the swirling downstream side opening edge 113a. If it is hung, all the garbage can be efficiently collected into the secondary dust collection chamber 114.

Furthermore, as shown in FIG. 13 , the primary discharge port 15 is formed so as to protrude toward the central axis of the primary swirl chamber 12 , and at least a part of the primary discharge port 15 is arranged at a lower end portion than the primary inflow port 11 at an axial height position. low position. With such a configuration, the dust-containing air flowing in from the primary inlet 11 swirls while having a velocity in the direction of the central axis, so that dust can be efficiently separated from the dust-containing air. In the case of adopting such a structure, the shape of the zero-order opening 113 may be configured as follows. That is, in order to collect the garbage b stagnant on the opening edge on the downstream side of the turn of the zero-order opening 113, it is similar to that of the above-mentioned FIG. 18 . In the same principle, at least a part of the opening edge on the downstream side of the swirl is formed in a circular shape that is recessed in the swirl direction of the swirl airflow in the primary swirl chamber 12 . That is to say, due to the generation of the vortex air flow in the direction of the arrow in FIG. 21, the opening edge 113a on the downstream side of the swirl of the zero-order opening 113 may be formed in the shape shown in FIG. Slidingly moves upward, and can be collected in the zero-order dust collection chamber 114 without being caught on the opening edge 113 a on the turning downstream side during the movement.

By adopting the above-mentioned structure, it is possible to suppress the catching of the opening edge of the zero-order opening 113 for the garbage b having an axial velocity (in the direction of the arrow in FIG. 21 ) by the same principle as the above description, and efficiently Trapped to 0 dust bag 114.

In addition, as shown in FIG. 15 , the arrangement of the zero-order opening 113 may be such that the center point of the opening surface of the zero-order opening 113 is connected to the central axis of the zero-order dust collecting chamber 114 and the central axis of the primary swirling chamber 12. The plane of is arranged on the upstream side in the swirling direction of the suction gas.

By adopting such a structure, a part of the airflow flowing into the primary dust collecting chamber 114 flows as shown in the airflow direction A in the dust collecting chamber in FIG. The edge peels off the garbage b caught on the opening edge on the turn downstream side of the zero-order opening 113 . Therefore, the garbage b can be efficiently collected in the zero-order dust collection chamber 114 while suppressing the garbage b from being caught on the opening edge on the downstream side of the turning.

On the contrary, as shown in FIG. 22, the center point of the opening surface of the zero-order opening 113 is arranged in the swirl direction of the suction gas with respect to the plane connecting the central axis of the zero-order dust collection chamber 114 and the central axis of the primary swirl chamber 12. In the case of the downstream side, a part of the airflow that has flowed into the primary dust collection chamber 114 flows like the airflow direction B in the dust collection chamber in FIG. The garbage b on the opening edge of the downstream side is further pressed against the opening edge of the turning downstream side.

In addition, as shown in FIG. 13 , the primary discharge port 15 is constituted by a hole provided on the side wall of the primary discharge pipe 16 protruding into the primary swirl chamber 12, and at least a part of the primary discharge pipe 16 is formed of a substantially conical cone. 16a, and the axial height position of at least a part of the substantially conical surface of the cone 16a may be arranged within the axial opening range of the zero-order opening 113 .

In this way, by protruding into the primary swirling chamber 12, a hole is provided on the side wall, the axial suction force in the primary swirling chamber 12 is suppressed, the swirling force acting on the garbage is increased, and the cone forming the cone 16a In terms of shape, the distance between the zero-time opening 113 and the primary discharge port 15 can be ensured, so the suction force from the primary discharge port 15 for the garbage separated into the zero-time dust collection chamber 114 via the zero-time opening 113 can be suppressed, And can be reliably collected into the 0 dust collection chamber 114.

In addition, in the reverse-type primary cyclone separation device 10 shown in this embodiment, the primary discharge pipe 16 has a structure protruding from the upper part of the primary swirl chamber 12, but as described above, in the primary swirl chamber 12, the garbage The suction force from the primary discharge port 15 is suppressed, so the zero-order opening 113 can be brought close to the primary discharge port 15. As a result, since the zero-order opening 113 can be provided above the primary swirl chamber 12, the zero The depth of the secondary dust collecting chamber 114 becomes deeper, that is, the distance from the zero secondary opening 113 to the bottom of the zero secondary dust collecting chamber 114 can be increased, so that the overall size of the zero secondary dust collecting chamber 114 can be enlarged. Rescattering of the dust in the zero-order dust collection chamber 114 is suppressed, and the collection performance can be improved. In addition, there is an advantage that, since the cone 16a is substantially conical in shape, when long linear garbage such as hair is entangled on the primary discharge pipe 16, by moving the garbage along the front end of the cone, it can be easily removed. remove.

In addition, as shown in FIG. 11 , the primary discharge port 15 may also be formed by a hole provided on the side wall of the primary discharge pipe 16 protruding into the primary swirl chamber 12, and the hole is provided in a part except the vicinity of the zero primary opening 113. other parts.

By adopting the above-mentioned structure, since the axial suction force in the primary swirling chamber 12 is suppressed, the swirling force acting on the garbage is increased. The suction force of the primary discharge port 15 is suppressed, so that the garbage can be reliably collected in the primary dust collection chamber 114 .

In addition, as shown in FIG. 17, the following structure can also be adopted, that is, the primary discharge port 15 is formed by a hole provided on the primary discharge pipe 16 protruding into the primary swirl chamber 12, and the primary discharge pipe 16 adopts a structure along the primary swirl chamber. 12 is pulled out in the axial direction, and bent at a substantially right angle, the discharge direction of the bent portion shown in FIG. The plane of the axis of the chamber 12 is arranged within a range of 45° on both sides.

The flow of air in the primary discharge pipe 16 configured in such a curved manner will be described. As shown in FIG. 17 , the air passage in the primary discharge duct 16 is substantially vertically curved (hereinafter referred to as a curved air passage), and the air flow (dotted line) inside the curved air passage has a small bending radius and suffers from resistance loss. On the other hand, since the bending radius of the air flow (solid line) located on the outside of the curved air path is relatively large, the air flow is smooth and free from resistance loss, and the air flow sucked from the primary swirl chamber 12 has a relatively fast speed. powerful. As a result, the distribution of the flow velocity of the primary discharge port 15 , that is, the distribution of the suction force is strong or weak.

Therefore, due to the positional relationship between the bending direction of the primary discharge pipe 16 and the zero-order opening 113 (within the range of 45° on both sides with respect to the plane connecting the central point of the zero-order opening 113 and the axis of the primary swirl chamber 12 ) That is, if it is bent in the direction of the zero-order opening 113, the portion where the flow velocity distribution of the primary discharge port 15 is weak is arranged near the zero-order opening 113, and the portion where the suction force is strong is not arranged near the zero-order opening 113, Therefore, it is possible to suppress the suction force from the primary discharge port 15 for the garbage separated into the primary dust collecting chamber 114 and improve the separation performance.

In addition, in order to obtain the above effect, the flow velocity distribution in the primary discharge port 15 may be strong or weak, so it is not limited to the above structure, and the bending angle of the curved portion 16c of the primary discharge pipe 16 may be other than a substantially right angle.

In addition, as shown in FIG. 13 , in the primary discharge pipe 16 , the primary discharge port 15 may be formed in a region other than the vicinity of the primary inflow port 11 (portion A surrounded by a dotted line).

By adopting the above-mentioned structure, it is possible to prevent the suction gas flowing in from the primary inlet 11 from being directly sucked into the primary discharge port 15, and to further enhance the flow in the primary swirling chamber 12 toward the swirling direction, increase the centrifugal force acting on the garbage, and further improve the collection efficiency. performance.

In addition, as shown in FIG. 13 , a part of the side wall of the primary discharge pipe 16 may be constituted by a cone 16 a and a substantially cylindrical cylinder 16 b having a large number of micropores.

By configuring the primary discharge pipe 16 as described above, the airflow entering from the primary inflow port 11 can smoothly swirl in the primary swirl chamber 12, so that the centrifugal force acting on the garbage can be increased, and the collection performance can be improved.

In addition, as shown in FIG. 13 , the height range of the primary swirling chamber 12 of the primary inlet 11 in the direction of the swivel axis can also be located within the height range of the cylindrical body 16b in the axial direction, and the axial direction of the cone 16a The height position of can also be arranged outside the opening range of the zero-order opening 113 in the axial direction.

By adopting the above structure, the cone 165a is arranged within the opening range of the primary swirling chamber 12 of the zero-order opening 113 in the direction of the swirling axis, so that the fineness of the side walls of the zero-order opening 113 and the discharge port body 15 can be ensured more reliably. Therefore, the suction force from the micropores of the outlet body 15 to the garbage scattered into the zero-order dust collection chamber 114 can be suppressed, and the collection performance of garbage can be improved.

In addition, as shown in FIG. 13 , the primary cyclone separation device 10 may have a primary opening 13 opened at the lower portion of the primary swirling chamber 12 and a primary dust collecting chamber 14 disposed below the primary opening 13 .

By adopting the above structure, it is possible to collect the garbage that has not been completely collected in the zero-order dust collecting chamber 114 by the primary dust collecting chamber 14 . Moreover, if the primary discharge port 15 has the shape of the above-mentioned cone 16a, the airflow that swirls and reaches the bottom of the primary swirl chamber 12 is reversed, and the gas that rises in the center of the primary swirl chamber 12 can be smoothly taken in through the cone 16a. The airflow (hereinafter referred to as updraft) can improve the garbage collection performance without disturbing the swirling airflow. In addition, by setting the primary discharge port 15 on the side wall surface of the cone 16a, the updraft diffuses slightly in the horizontal direction, so the garbage that is scattered for some reason after being collected by the primary dust collection chamber 14 is diffused in the horizontal direction. Influenced by the updraft and swirl flow, the swirl is subjected to the upward force at the same time. Therefore, since the rescattered garbage rises while swirling in the primary swirling chamber 12 , it can be caught in the zero-primary dust collecting chamber 114 .

In addition, as shown in FIG. 13 , the zero-order opening 113 may be provided between the primary opening 13 and the primary discharge port 15 .

By adopting the above configuration, the garbage re-scattered from the primary dust collecting chamber 14 can be caught in the zero secondary dust collecting chamber 114 while rising toward the vicinity of the primary discharge port 15 .

In addition, as shown in FIG. 13, the side wall of the primary swirl chamber 12 may also be composed of a substantially cylindrical primary cylindrical portion 12b and a primary conical portion 12a, and the shape of the primary conical portion 12a is such that the diameter becomes smaller as it is cut off. Roughly conical shape behind the front end.

By adopting the above-mentioned structure, the garbage reaches the bottom of the primary swirling chamber 12 while swirling along the inner wall of the primary swirling chamber 12 through its own inertial force and centrifugal force. The substantially conical wall surface of the primary conical portion 12a reduces the radius of gyration, thereby ensuring a centrifugal force proportional to the square of the gyration speed and inversely proportional to the radius of gyration, so that garbage can be efficiently collected in the primary collection. Dust room14. In addition, there is an effect of suppressing the amount of air flowing into primary dust collecting chamber 14 and suppressing rescattering of the garbage that reaches primary dust collecting chamber 14 .

In addition, as shown in FIG. 13 , the inclination angle of the primary conical portion 12 a with respect to the central axis of the primary swirl chamber 12 may be substantially the same as or less than the inclination angle of the cone 16 a with respect to the central axis of the primary swirl chamber 12 .

By adopting the above structure, the cross-sectional area of the swirl air path (air path other than the primary discharge pipe 16 ) in the primary swirl chamber 12 is not reduced in the primary conical portion 12a, thereby suppressing pressure loss and ensuring primary flow. The upflow air path at the center of the swirl chamber 12 prevents interference between the swirl flow and the updraft, and improves collection performance. Moreover, since the distance between the wall surface of the primary cone part 12a and the cone 16a is ensured, it can suppress that the garbage swirling along the inner wall surface of the primary cone part 12a is sucked in from the cone 16a.

Hereinafter, the structure of the secondary cyclone separation apparatus 20 is demonstrated using FIG.10, FIG.12, FIG.16. The secondary cyclone separation device 20 has: a secondary inflow port 21 that takes in dust-laden air from the primary discharge pipe 16; The dust-laden air introduced by the inlet 21 is swirled. After swirling the suction gas flowing in from the secondary inlet 21 to separate dust, the suction gas is discharged from the secondary discharge port 25 . Moreover, it has the secondary discharge pipe 26 which guides the exhaust gas from this secondary discharge port 25 to the exhaust air path 51. As shown in FIG.

In addition, the secondary discharge pipe 26 is configured such that its axis substantially coincides with that of the secondary swirl chamber 22 , protrudes into the secondary swirl chamber 22 , and has a secondary discharge port 25 at its lower end.

In addition, the side wall of the secondary swirl chamber 22 is constituted by a substantially cylindrical cylindrical portion 22b and a substantially conical conical portion 22a. Moreover, it has the secondary opening part 23 formed by opening part of the conical part 22a, and the secondary dust collecting chamber 24 which communicates with the secondary swirling chamber 22 through the secondary opening part 23. As shown in FIG.

The outline of the operation of the secondary cyclone separation device 20 will be described. The secondary cyclone separation device 20 takes in dust-laden air from the secondary inlet 21 through the primary discharge pipe 16 , and the dust-containing air includes garbage that cannot be collected in the primary cyclone separation device 10 . The dust-laden air flows in substantially horizontally along the side wall of the secondary swirling chamber 22, so it becomes a swirling air flow, forming a forced vortex region near the central axis and a quasi-free vortex region on its outer peripheral side. At the same time, through its path structure and gravity, flow down. At this time, due to the centrifugal force acting on the garbage, the garbage that has not been completely captured in the primary cyclone separation device 10 is pressed against the inner wall of the secondary swirling chamber 22 and separated from the suction gas, and enters the secondary cyclone with the descending swirling flow. Below the swirl chamber 22 , it is collected into the secondary dust collection chamber 24 through the secondary opening 23 . The air from which the dust has been removed rises along the central axis of the secondary swirling chamber 22 and is discharged from the secondary discharge port 25 . The air discharged from the secondary discharge port 25 is introduced into the exhaust air path 51 through the secondary discharge pipe 26 .

Moreover, as shown in this embodiment, by mounting the primary cyclone separation device 10 and the secondary cyclone separation device 20 on the electric vacuum cleaner 100, garbage dust can be reliably separated from the dust-laden air. Therefore, since no filter is used in the air passage or the number of filters in the air passage can be reduced, it is possible to provide the electric vacuum cleaner 100 that is less likely to reduce the air volume due to clogging of the filter. In addition, even if only the cyclone device corresponding to the primary cyclone separation device 10 or only the cyclone device corresponding to the secondary cyclone separation device 20 is mounted on the electric vacuum cleaner 100, the above-mentioned effect can be obtained.

In addition, in the above-mentioned embodiment, the electric vacuum cleaner equipped with the secondary cyclone separation device 20 has been described, but only the primary cyclone separation device 10 may be mounted, or a plurality of cyclone separation devices (secondary cyclone separation device, tertiary cyclone separation device, etc.) may be provided. Cyclone separation unit...). In addition, the present invention relates to the structure of the cyclone dust collector, and the form of the electric vacuum cleaner is not limited to the canister type electric vacuum cleaner described in this embodiment.

In addition, in the above-mentioned embodiment, the fine holes of the cone 16a and the cylinder 16b have been described as holes communicating with the inside and outside of the wall surface having a certain thickness, but it is not limited thereto. The mesh structure of the filter attached to the body forms micropores.

Industrial Applicability

The present invention can be applied to a cyclone separation device and an electric vacuum cleaner equipped with the cyclone separation device.

reference sign

1 Suction port body, 2 Suction pipe, 3 Connecting pipe, 4 Suction hose, 5 Vacuum cleaner main body, 10 Primary cyclone separation device, 11 Primary inflow port, 12 Primary swirl chamber, 12a Primary cone part, 12b Primary cylinder part, 13 Primary opening, 14 Primary dust collection chamber, 15 Primary outlet, 16a Cone, 16b Cylinder, 16 Primary discharge pipe, 20 Secondary cyclone separation device, 21 Secondary inlet, 22 Secondary swirling chamber, 22a Secondary cone, 22b secondary cylinder, 23 secondary opening, 24 secondary dust collection chamber, 25 secondary discharge port, 26 secondary discharge pipe, 49 suction air path, 50 dust collection unit, 51 exhaust Air path, 52 filters, 53 electric blowers, 55 wheels, 100 electric vacuum cleaners, 1130 openings, 1140 dust chambers.

Claims (6)

1. a cyclone separator, is characterized in that, has:

From the inflow entrance that the dust laden air of outside wind path flows into;

Swirling chamber, described swirling chamber is formed as substantially cylindrical shape, the dust laden air flowed into is circled round and be separated air and dust from this inflow entrance;

Outlet, described outlet is discharged from the isolated air of described dust laden air in described swirling chamber;

Discharge pipe, described discharge pipe is communicated with the pressure fan and described outlet that produce attraction;

Opening portion, described opening portion the sidewall of described swirling chamber a part of opening and formed;

Dust storage chamber, described dust storage chamber is arranged on outside the radial direction of described opening portion,

The concave shape be formed as at least partially with the circle caved on described convolution direction of the opening edge of the described opening portion relative with the downstream, convolution direction of the suction gas in described swirling chamber,

The mode that described opening portion is positioned at the convolution direction upstream side of the suction gas of described swirling chamber with the approximate centerpoint of described opening portion relative to the plane linking the central shaft of described dust storage chamber and the central shaft of described swirling chamber is formed.

2. cyclone separator as claimed in claim 1, is characterized in that,

Described outlet is formed in the mode at least partially configuring described outlet in the position lower than the bottom of described inflow entrance,

Being formed as at least partially with the concave shape in the described circle axially caved in of the opening edge of the axially opening portion of downside of described swirling chamber.

3. cyclone separator as claimed in claim 1 or 2, is characterized in that,

Described outlet is made up of the hole on the sidewall being arranged on discharge pipe outstanding in described swirling chamber, and being formed by the cone of roughly conical shape at least partially of described discharge pipe,

The height and position axially at least partially in the roughly conical shape face of described cone is configured to the opening range being axially positioned at described opening portion.

4. cyclone separator as claimed in claim 1 or 2, is characterized in that,

Described outlet is made up of the hole on the sidewall being arranged on discharge pipe outstanding in described swirling chamber,

Described hole is not arranged near described opening portion.

5. cyclone separator as claimed in claim 1 or 2, is characterized in that,

Described outlet is made up of the hole be arranged on discharge pipe outstanding in described swirling chamber,

Described discharge pipe has bend, and this bend bends with approximate right angle after being drawn out to the axis of described swirling chamber, and the discharge direction of the air of described bend becomes the direction being provided with described opening portion.

6. an electric dust collector, is characterized in that, has the cyclone separator described in claim 1 or 2.