TWI409047B - Cyclonic separating apparatus and electric vacuum cleaner - Google Patents

Abstract

Disclosed are an electric cleaner and a cyclone separator device that efficiently separate waste and that can securely collect separated waste in a dust collection chamber without causing re-dispersion. To this end, dust is separated from dust-containing air that enters a primary inlet (11) by means of the dust-containing air whirling within a primary vortex chamber (12), and a primary discharge tube (16), which discharges the air from which dust has been eliminated, is configured bent nearly perpendicularly between the position at which the primary vortex chamber (12) contacts the primary inlet (11) and the position 90° further in the direction of whirling of the dust-containing air.

Description

Cyclonic separation device and electric vacuum cleaner

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

In the cyclone separation device, particularly in a cyclone separation device for an electric vacuum cleaner or the like, it is necessary to constitute a small size in consideration of user convenience. For example, in the case of a cyclone having a plurality of structures in the past, although the centrifugal force generated by the swirling chamber of the upstream side cyclone is used to separate the garbage from the dust-containing air, the air discharged from the discharge port is more clean than the dust-laden air that is inhaled. In order to reduce the size of the cyclone separation device that combines the upstream side cyclone and the downstream side cyclone, it is necessary to form a wind path for the cyclone from the upstream side to the downstream side cyclone. The discharge pipe is as short as possible, and the discharge pipe is bent (for example, refer to Patent Document 1). Further, even if it is not limited to the air passage between the respective cyclones in the cyclone having the multi-stage structure as described above, since it is necessary to compactly include the filter or the electric blower on the downstream side of the cyclone, it is necessary that the discharge pipe is substantially bent.

[Patent Literature]

[Patent Document 1] Japanese Patent Publication No. 2008-541815 (pages 6 to 8, page 3, and figure 5)

However, in the prior art disclosed in Patent Document 1, the bending of the discharge pipe adversely affects the separation performance of the cyclone. For example, when mounted on an electric vacuum cleaner, the cleanliness of the exhaust gas discharged from the cleaner body is insufficient. . That is, since the suction force from the discharge port is strong due to the bending of the discharge pipe, the turning force of the dust-containing air in the swing chamber is weakened, and the dust is not sufficiently centrifuged.

The present invention has been made to solve the problem, and an object of the present invention is to provide a cyclone separation device that can efficiently collect and disperse garbage without scattering the once separated garbage, and can be surely collected in the cleaning chamber. An electric vacuum cleaner for a cyclone separation device.

The cyclone separating apparatus of the present invention includes: an inflow port in which dust-containing air from an external air path flows in; and a revolving chamber formed in a substantially cylindrical shape, the inflow port communicating in a tangential direction to allow inflow from the inflow port The dust air rotates to separate the air from the dust; the first vacuum chamber communicates with the rotary chamber and leaves dust separated from the dusty air; and the discharge port discharges the dusty air from the rotary chamber a separated air; a blower that generates suction; and a discharge pipe that communicates the blower with the discharge port; the discharge pipe is formed in such a manner that a distribution of a flow velocity at the discharge port is weakened at a position near the flow inlet, The discharge pipe has a bent portion bent at a right angle after being pulled out in the axial direction of the rotary chamber, and the air is discharged in a direction from the tangent position from the rotary chamber to the flow inlet to the direction The range in which the direction of rotation of the dust-laden air is rotated by 90°.

According to the electric vacuum cleaner of the present invention, by adopting this configuration, the garbage can be efficiently separated and collected, and the garbage is not scattered again during the collection.

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

First embodiment

Fig. 1 is a perspective view showing the appearance of an electric vacuum cleaner of the present invention. As shown in Fig. 1, the electric vacuum cleaner 100 is composed of a suction port body 1, a suction pipe 2, a connection pipe 3, a suction hose 4, and a cyclone cleaner body 5. The suction port body 1 draws in dust and dusty air from the ground. One end of the straight cylindrical suction pipe 2 is connected to the outlet side of the suction port body 1. The handle of the operation switch that controls the operation of the electric vacuum cleaner 100 is disposed at the other end of the suction pipe 2, and connects one end of the slightly curved connecting pipe 3 in the middle. One end of the flexible bellows suction hose 4 is connected to the other end of the connecting pipe 3. Further, the cleaner body 5 is connected to the other end of the suction hose 4. The power source line is connected to the cleaner body 5, and the power source line is connected to an external power source, and is energized to drive an electric blower (not shown) to perform an intake 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 allowing dust-containing air to flow in from the outside of the cleaner body 5 to the inside.

Moreover, Fig. 2 is a perspective view of the cleaner body 5 of the electric vacuum cleaner of Fig. 1, and Fig. 3 is a top view of the cleaner body 5 of Fig. 1. 4 is a cross-sectional view taken along line a-a of the cleaner body 5 shown in FIG. 2, and FIG. 5 is a cross-sectional view taken along line b-b of the cleaner body 5 shown in FIG. also, Fig. 6 is a top view of the cleaner body 5 in a state in which the dust suction unit 50 is removed.

As shown in FIGS. 2 to 6, the cleaner body 5 includes a suction air passage 49, a dust suction unit 50, an exhaust air passage 51, a filter 52, an electric blower 53, and an exhaust port 54. Further, the cleaner body 5 includes a wheel 55, a reeling disk (not shown), and the like at a rear portion thereof. Further, the dust suction unit 50 is constituted by the primary cyclone separation device 10 and the secondary cyclone separation device 20, and the secondary cyclone separation device 20 is provided in parallel with the primary cyclone separation device 10, and is connected to the downstream side of the primary cyclone separation device 10. .

The configuration, operation, and effect of each unit will be described later. The primary cyclone separator 10 includes a primary inflow port 11, a primary rotary chamber 12, a zero-order opening 113, a primary opening 13, a secondary cleaning chamber 114, and a primary cleaning chamber 14, once. The discharge port 15 and the primary discharge pipe 16 are provided. Further, the secondary cyclone separation device 20 includes a secondary inlet 21, a secondary rotary chamber 22, a secondary opening 23, a secondary cleaning chamber 24, a secondary discharge port 25, and a secondary discharge pipe 26. Further, the zero-time cleaning chamber 114, and the primary-vacuum chamber 14 and the secondary-cleaning chamber 24 are formed by one outer casing member, and the zero-vacuum chamber 114 is disposed to surround the secondary vacuum chamber 24.

Here, in the primary cyclone separator 10, the primary inflow port 11 corresponds to the inflow port of the present invention, the primary revolving chamber 12 corresponds to the revolving chamber of the present invention, and the primary discharge port 15 corresponds to the discharge port of the present invention, and the primary discharge pipe 16 corresponds to the discharge pipe of the present invention. Further, the primary opening 13 corresponds to the first opening of the present invention, the primary cleaning chamber 14 corresponds to the first cleaning chamber of the present invention, and the primary opening 113 corresponds to the second opening of the present invention, 0 times. The cleaning chamber 114 corresponds to the second cleaning chamber of the present invention.

Similarly to the above, in the secondary cyclone separation device 20, the secondary inlet 21 corresponds to the inlet of the present invention, the secondary rotary chamber 22 corresponds to the rotary chamber of the present invention, and the secondary discharge port 25 corresponds to the row of the present invention. The outlet, primary discharge pipe 16 corresponds to the discharge pipe of the present invention. Further, the secondary opening portion 23 corresponds to the first opening portion of the present invention, and the secondary cleaning chamber 24 corresponds to the first cleaning chamber of the present invention.

Here, a path for discharging the air flowing into the inside of the cleaner body 5 to the outside of the cleaner body 5 will be described.

The air that has flowed into the inside of the cleaner body 5 reaches the primary cyclone separator 10 via the suction air passage 49. In the primary cyclone separation device 10, the primary inflow port 11, the primary rotary chamber 12, and the primary discharge port 15 are gradually flowed, and the air discharged from the primary discharge port 15 passes through the primary discharge pipe 16 to reach the secondary cyclone separation device 20. . The secondary cyclone separation device 20 gradually flows to the secondary inlet 21, the secondary rotary chamber 22, and the secondary discharge port 25, and the air discharged from the secondary discharge port 25 passes through the secondary discharge pipe 26, The flow gradually flows toward the exhaust air passage 51 side. Then, the air is discharged to the outside of the cleaner body 5 via an exhaust path composed of the exhaust air passage 51, the filter 52, the electric blower 53, and the exhaust port 54.

Further, as described above, since the secondary cyclone separation device 20 is disposed at the downstream position of the primary cyclone separation device 10, the secondary cyclone separation device 20 traps the garbage that is not completely captured by the primary cyclone separation device 10, but Increasing the collection performance as the dust suction unit 50 makes it possible to make the air discharged from the cleaner body 5 cleaner.

Hereinafter, the primary cyclone separation device 10 and the secondary cyclone separation device 20 constituting the dust collection unit 50 will be described. Further, in order to roughly compare the order of the application and the order of construction of the present invention, the secondary cyclone separation device 20 will be described.

Fig. 7 is a perspective view showing the appearance of the dust suction unit 50, and Fig. 8 is a front view of the dust suction unit 50. Fig. 9 is a left side view of the dust suction unit 50, and Fig. 10 is a top view of the dust suction unit 50 of the electric vacuum cleaner of the present invention. 11 is an AA arrow sectional view of the dust suction unit 50 shown in FIG. 8, and FIG. 12 is a BB arrow sectional view of the dust suction unit 50 shown in FIG. 8, and FIG. 13 is a view shown in FIG. FIG. 14 is a cross-sectional view taken along line DD of the dust suction unit 50 shown in FIG. 13, and FIG. 15 is an EE arrow sectional view of the dust suction unit 50 shown in FIG. Fig. 16 is a FF arrow sectional view of the dust suction unit 50 shown in Fig. 13, and Fig. 17 is a GG cross section of the dust suction unit 50 shown in Fig. 16.

First, the configuration of the secondary cyclone separation device 20 will be described using Figs. 10, 12, and 16.

The secondary cyclone separation device 20 includes a secondary inlet 21 for taking in dust-containing air from the primary discharge pipe 16, and dusty air introduced from the secondary inlet 21 by connecting the secondary inlet 21 in a substantially tangential direction. The revolving secondary rotary chamber 22 separates the dust by the intake air flowing in from the secondary inlet 21, and then discharges the intake air from the secondary discharge port 25. Further, a secondary discharge pipe 26 for guiding the exhaust gas from the secondary discharge port 25 to the exhaust air passage 51 is provided.

This secondary discharge pipe 26 is shown in Fig. 12 in the secondary rotary chamber 22 The outer side is formed by roughly deforming into a right angle. Further, as shown in Fig. 10 and Fig. 16, the downstream side of the curved portion of the secondary discharge pipe 26 is rotated 90 from the position where the secondary rotary chamber 22 is tangential to the secondary flow inlet 21 toward the direction of rotation of the dust-containing air. The direction between the positions of ° is extended.

Further, the secondary discharge pipe 26 has its shaft substantially aligned with the secondary rotary chamber 22, and is provided to protrude into the secondary rotary chamber 22, and the bottom wall of the protruding portion includes a secondary discharge port 25.

Further, the side wall of the secondary rotating chamber 22 is composed of a substantially cylindrical cylindrical portion 22b and a substantially conical conical portion 22a. Further, the secondary opening portion 23 formed by a part of the opening of the conical portion 22a and the secondary cleaning chamber 24 that communicates with the secondary revolving chamber 22 via the secondary opening portion 23 are included.

An outline of the operation of the secondary cyclone separation device 20 will be described.

When the secondary cyclone separator 20 takes in dust-containing air from the secondary outlet 21 via the primary discharge pipe 16, the dust-containing air flows into the side wall of the secondary rotary chamber 22, so that it becomes a swirling airflow and forms a vicinity of the central axis. The forced vortex region and the quasi-free vortex region on the outer peripheral side thereof gradually flow downward by using the path structure and gravity. At this time, since the centrifugal force acts on the dust, the garbage that has not been completely collected by the primary cyclone separation device 10 is pressed against the inner wall of the secondary rotary chamber 22, and is separated from the intake air, and rides the descending vortex to the secondary rotation. After the lower portion of the chamber 22 is advanced, it is trapped in the secondary cleaning chamber 24 via the secondary opening portion 23. The air from which the garbage has been removed rises along the central axis of the secondary revolving chamber 22, and is discharged from the secondary discharge port 25. The air discharged from the secondary discharge port 25 passes through the secondary discharge pipe 26 and is guided to the exhaust air passage 51.

Here, the flow of the air in the secondary discharge pipe 26 configured as described above will be described. As shown in Fig. 12, when the air passage in the secondary discharge pipe 26 is vertically bent, the air flow (broken line) located inside the curved air passage receives a resistance loss due to the relatively small bending radius. On the other hand, the air flow (solid line) located inside the curved air path is relatively large in bending radius and does not suffer from resistance loss. Therefore, the velocity of the airflow sucked from the primary rotary chamber 12 is relatively fast, and the force is strong. As a result, the distribution of the flow velocity at the secondary discharge pipe 26, that is, the distribution of the suction force is strong.

Therefore, by setting the positional relationship between the bending direction of the secondary discharge pipe 26 and the secondary rotary chamber 22 as described above, the portion where the flow velocity distribution of the secondary discharge port 25 is weak can be disposed in the secondary flow inlet 21 In the vicinity, it is possible to suppress the air flowing in from the secondary inflow port 21 from being sucked into the secondary discharge port 25 immediately before the air in the secondary rotary chamber 22 is rotated. Therefore, the flow in the direction of rotation can be enhanced, and garbage can be trapped. On the other hand, in the case where the portion where the flow velocity distribution of the secondary discharge port 25 is strong is disposed in the vicinity of the secondary flow inlet 21, since a part of the airflow does not rotate in the secondary rotary chamber 22, it is directly discharged from the secondary discharge port. 25 is discharged, and at the same time, an air flow is generated in a direction opposite to the direction of rotation, so that the centrifugal force acting on the garbage is small, and it is difficult to collect garbage.

Further, in order to obtain the effect as described above, since the flow velocity distribution at the secondary discharge port 25 is made strong, the present invention is not limited to the configuration shown in the embodiment, and for example, the secondary discharge pipe 26 may be used. The bending angle is not substantially vertical.

Further, in order to make the strength of the flow velocity distribution at the secondary discharge port 25 clearer, it is also possible to bend from the secondary discharge port 25 to the start of the secondary discharge pipe 26. The distance (X) of the bending starting point (point A in Fig. 12) is set to be 25 times or less the representative length (D) of the cross section of the air passage in the secondary discharge port 25. Further, in the case where the cross-sectional shape of the exhaust pipe air passage 16 is circular, the representative length (D) is the diameter of the circular shape.

Generally, in the case of a simple tube flow, when the tube inlet flows at a uniform speed, the boundary line develops along the tube wall, and its thickness increases, and when the center portion is reached, the velocity distribution in the tube becomes a constant value (parabolic velocity distribution). Wait). The section that achieves this fully developed flow is called the assisted walk interval, and its length is called the travel distance 1, which is known to be in the case of spoiler, 1/D>25~40 (D is the representative length of the pipe section). That is, when 1/D>25 to 40, the flow velocity distribution in the tube becomes a constant value.

Since the secondary cyclone separation device 20 is generally used in a high wind speed region, its flow is a spoiler state, and it is suitable to apply the above-described relationship. If the dimensional relationship as described above is adopted, the flow can be more intense in the direction of rotation, and indeed Collect garbage. Further, by setting the distance X, the secondary cyclone separation device 20 can constitute a small effect.

Further, in the air passage in the secondary discharge pipe 26, if the filter is installed on the upstream side of the starting point of the curve from which the bending is started, the secondary discharge pipe 26 on the upstream side of the filter is caused by the pressure loss of the filter. The airflow in the air passage is rectified to suppress the strength of the flow velocity distribution at the secondary discharge port 25.

Therefore, in the present invention, it is determined that no filter is provided between the secondary discharge port 25 and the bending start point at which the bending starts. Therefore, it is possible to make the flow velocity distribution at the secondary discharge port 25 appear next to each other, thereby enhancing the flow in the direction of rotation and reliably collecting the garbage.

Next, the configuration of the primary cyclone separation apparatus 10 will be described using Figs. 11, 14, 14, 15, and 17.

The primary cyclone separation device 10 includes a primary inflow port 11 for taking in dust-containing air from the suction air passage 49, and a primary rotation of the dust-containing air introduced from the primary inflow port 11 by connecting the primary inflow port 11 in a substantially tangential direction. In the chamber 12, after the intake air flowing in from the primary inflow port 11 is rotated to separate the dust, the intake air is discharged from the primary discharge port 15. Further, the primary discharge pipe 16 for guiding the exhaust gas from the primary discharge port 15 to the secondary cyclone separation device 20 is included.

As shown in Fig. 17, the primary discharge pipe 16 is configured to be bent substantially at right angles to the outside of the primary rotary chamber 12. Further, as shown in Figs. 14 and 16, the downstream side of the curved portion of the primary discharge pipe 16 is rotated by 90° from the position where the primary rotary chamber 12 is tangential to the primary flow inlet 11 toward the direction of rotation of the dust-containing air. The direction between the extensions.

Further, as shown in Fig. 15, on the downstream side of the curved portion of the primary discharge pipe 16, the direction is in the range of 45° on both sides of the plane connecting the center point of the zero-order opening 113 and the axis of the primary rotary chamber 12 Extension.

Further, the primary discharge pipe 16 is disposed such that the primary rotary chamber 12 substantially coincides with its axis and protrudes into the primary rotary chamber 12, and the side wall of the projection is formed by a substantially cylindrical cylindrical body 15b having a plurality of fine holes, and A substantially conical cone 15a having a plurality of fine holes is formed, and the discharge port 15 is constituted by the fine holes.

Further, the primary rotating chamber 12 has a side wall formed of a substantially cylindrical cylindrical portion 12b and a substantially conical conical portion 12a. Also, including the cylindrical portion The zero-order opening portion 113 formed by one of the openings 12b, the zero-order cleaning chamber 114 that communicates with the primary rotation chamber 12 via the zero-order opening portion 113, and the primary dust suction chamber 14 that communicates with the primary rotation chamber 12 via the primary opening portion 13. Further, the 0th opening portion 113 is formed at a position lower than the primary inflow port 11.

An outline of the operation of the primary cyclone separation device 10 will be described.

When the primary cyclone separator 10 takes in dust-containing air from the primary inlet 11 through the suction air passage 49, the dust-containing air flows into the side wall of the primary rotary chamber 12, so that it becomes a swirling airflow and forms a forced vortex region near the central axis. On the outer peripheral side of the quasi-free vortex area, one side uses its path structure to gradually flow downward with gravity. At this time, since the centrifugal force acts on the dust, dust having a large size and specific gravity such as hair, a candy bag, or sand (relatively large sand) (hereinafter referred to as "dust A") is pressed into the primary rotary chamber 12. The wall is separated from the inhalation, and is collected and accumulated by the zero-vacuation chamber 114 through the zero-order opening 113. Further, the remaining dust rides on the downward vortex to advance toward the lower side of the primary rotary chamber 12. Therefore, the airflow is light and easy, and the amount of dust, fine dust (hereinafter referred to as "dust B") is sent to the primary cleaning chamber 14 through the primary opening portion 13, and is further rushed to the vacuum by the air pressure. Above the chamber 14, where it accumulates and is compressed. The air from which the dust A and the dust B have been removed rises along the central axis of the primary rotary chamber 12, and is discharged from the primary discharge port 15. The air discharged from the primary discharge port 15 passes through the primary discharge pipe 16 and is guided to the secondary cyclone separation device described later.

As described above, by forming the primary discharge pipe 16 by bending, the flow rate at the primary discharge port 15 is divided by the same principle as described above. Cloth, the distribution of suction, is strong or weak.

Therefore, by adopting the positional relationship between the bending direction of the primary discharge pipe 16 and the primary flow inlet 11 as described above, as shown in Fig. 17, the portion where the flow velocity distribution of the primary discharge port 15 is weak can be arranged at the primary flow inlet. In the vicinity of 11, it is possible to suppress the air flowing in from the primary inflow port 11 from being sucked into the primary discharge port 15 immediately before the rotation in the primary rotary chamber 12. Therefore, the flow toward the turning direction can be enhanced, and the garbage is surely trapped. On the other hand, in a case where a portion where the flow velocity distribution is strong in the primary discharge port 15 is disposed in the vicinity of the primary flow inlet 11, a part of the airflow is not rotated in the primary rotary chamber 12, but is directly discharged from the primary discharge port 15, and at the same time because Since the airflow is directed in the direction opposite to the direction of rotation, the centrifugal force acting on the garbage becomes small, and it is difficult to collect garbage.

Further, according to the positional relationship between the bending direction of the primary discharge pipe 16 and the zero-order opening 113, the portion of the primary discharge port 15 having a weak flow velocity distribution is disposed in the vicinity of the zero-order opening portion 113, and the portion having a strong suction force is not disposed. Since the suction force from the primary discharge port 15 of the dust A separated into the vacuum chamber 114 is suppressed, the separation performance can be improved in proportion to the amount of suppression.

Further, in order to obtain the effect as described above, since the flow velocity distribution at the primary discharge port 15 is made strong, the present invention is not limited to the configuration shown in the embodiment, and for example, the bending of the primary discharge pipe 16 can be performed. The angle is not roughly vertical.

Further, the effect obtained by bending the primary discharge pipe 16 and the bending direction of the primary discharge pipe 16 and the position of the zero-order opening 113 are closed. The effects obtained are independent of each other. That is, the effect of the positional relationship between the bending direction of the primary discharge pipe 16 and the zero-order opening 113 is independent of the positional relationship between the bending direction of the primary discharge pipe 16 and the primary flow inlet 11, and vice versa.

Further, as described above, the primary discharge port 15 is formed by the fine holes provided in the side wall of the primary discharge pipe 16, thereby suppressing the suction force in the axial direction and increasing the rotational force acting on the dust. As shown in Fig. 14, the primary discharge port 15 may be formed in the primary discharge port 16 in a region excluding a portion near the primary flow inlet 11.

Therefore, the suction force in the axial direction can be suppressed, and the swirling force acting on the dust can be increased, and the inflow of the inflow from the primary inflow port 11 can be suppressed from being directly sucked into the primary discharge port 15, and the flow in the direction of rotation can be further enhanced. Improve the centrifugal force acting on the dust and improve the trapping performance.

Further, as shown in FIGS. 11 and 13 , in the primary discharge pipe 16 , the primary discharge port 15 may be formed in a region excluding a portion near the zero-opening portion 113 .

Therefore, since the suction force acting on the dust is increased while suppressing the suction force in the axial direction, the suction force from the primary discharge port 15 of the dust A that has flown to the vacuum chamber 114 through the zero-order opening 113 is suppressed. The dust A can be trapped to the vacuum chamber 114 once. In contrast, in the primary discharge pipe 16, when the primary discharge port 15 is provided in the vicinity of the zero-order opening portion 113, since the suction force from the primary discharge port 15 greatly acts on the dust A, it is difficult to trap the dust A. To the vacuum chamber 114, the dust A trapped at the same time to the vacuum chamber 114 is also prone to re-scatter.

Further, as shown in Fig. 13, at least a part of the substantially conical surface of the cone 15a may be disposed at an axial height position in the axial opening of the zero-order opening 113.

Therefore, the suction force in the axial direction can be suppressed, and the rotational force acting on the garbage can be increased, and the distance between the zero-opening portion 113 and the discharge port 15 can be ensured, and the zero-vacuum chamber can be suppressed from passing through the zero-order opening portion 113. The suction of the separated garbage A from the discharge port 15 is 114, and the garbage A is surely trapped by the vacuum chamber 114.

In the reverse-type primary cyclone separator 10 of the present embodiment, the primary discharge pipe 16 is configured to protrude from the upper portion of the primary rotary chamber 12, but the suction from the primary discharge port 15 of the garbage A is caused. Since the opening portion 113 is placed at a height close to the cone 15a, the garbage A can be surely collected to the vacuum chamber 114 once. Therefore, the depth of the vacuum chamber 114 can be made deeper, and the re-scattering of the garbage A can be further suppressed, and the collection performance can be improved.

Further, since the cone 15a can smoothly take in the flow which is reciprocated in the state of being rotated below the primary rotary chamber 12 and then rises in the center of the primary rotary chamber 12, the swirling airflow is not disturbed. Improve capture performance. Further, since the cone 15a has a substantially conical shape, it is also advantageous in that when the garbage of the long line such as hair is entangled in the primary discharge pipe 16, the garbage can be easily removed by operating in the direction of the tip end of the cone.

Further, as shown in Figs. 11 and 13, the height range of the primary inflow port 11 in the axial direction may be arranged in the axial height range of the cylindrical body 15b, and the conical large end portion may be Set the height position in the axial direction to 0 times The opening portion 113 is outside the range of the opening in the axial direction.

Therefore, since the airflow entering from the primary inflow port 11 smoothly rotates, the centrifugal force acting on the garbage is increased, and the collecting performance can be improved. Further, since only the cone 15a is disposed in the opening range of the zero-order opening 113 in the axial direction, the distance between the zero-order opening 113 and the primary discharge port 15 can be surely ensured, and the flying to the zero-vacuum chamber can be suppressed. The waste A of 114 comes from the suction of one discharge port 15 to improve the collection performance.

Further, as described above, by providing the primary conical portion 12a, the primary opening portion 13, and the primary cleaning chamber 14, the primary cleaning chamber 14 can be used to collect the garbage B that cannot be completely collected in the zero-time cleaning chamber 114 (the surface area is relatively small). The effect of air resistance is small.) Further, although the primary conical portion 12a has an effect of gradually reducing the radius of gyration of the swirling airflow to increase the centrifugal force acting on the garbage, the cone 15a can be smoothly taken in the state of being rotated below the primary rotary chamber 12. Since the flow that has arrived is reversed and flows in the center of the primary rotary chamber 12, the swirling airflow is not disturbed, and the collecting performance can be improved. That is, by the combination of the primary conical portion 12a and the cone 15a, the garbage B can be more reliably captured to the primary cleaning chamber 14.

Further, as shown in Fig. 11, the inclination angle of the primary conical portion 12a with respect to the central axis of the primary rotary chamber 12 may be substantially equal to the inclination angle of the cone 15a with respect to the central axis of the primary rotary chamber 12 or the following.

Therefore, the cross-sectional area of the air passage in the rotary air passage of the primary rotary chamber 12 (the air passage other than the primary discharge pipe 16 and its internal air passage in the primary rotary chamber 12) is not reduced in the primary conical portion 12a, and the pressure is suppressed. Loss, while ensuring the air path of the ascending airflow in the center of the rotary chamber 12, preventing the rotary gas The flow interferes with the ascending airflow to avoid airflow disturbances and improve the trapping performance. Moreover, the distance between the wall surface of the primary conical portion 12a and the cone 15a is not made close, and the garbage B which is swung along the inner wall surface of the primary conical portion 12a can be prevented from being sucked from the cone 15a.

Moreover, as shown in FIG. 11 and FIG. 13 to FIG. 15, the opening area of the primary opening portion 13 can be made smaller than the opening area of the zero-order opening portion 113.

Therefore, the amount of air flowing into the primary cleaning chamber 14 after passing through the primary opening portion 13 is suppressed, and the effect of re-scattering the garbage B reaching the primary cleaning chamber 14 can be obtained.

Further, as described in the present embodiment, by mounting the primary cyclone separation device 10 and the secondary cyclone separation device 20 in the electric vacuum cleaner 100, dust can be reliably separated from the dust-containing air. Therefore, since the filter can be omitted or the number of filters can be reduced, the clogging of the filter is less likely to occur, and the electric vacuum cleaner 100 in which the air volume is hard to be reduced can be provided. Further, this effect can be obtained by mounting only the cyclone device corresponding to the primary cyclone separation device 10 in the electric vacuum cleaner 100, or by mounting only the cyclone device corresponding to the secondary cyclone separation device 20.

1‧‧‧Inhalation body

2‧‧‧Inhalation tube

3‧‧‧Connecting tube

4‧‧‧Sucking hose

5‧‧‧ vacuum cleaner body

10‧‧‧One cyclone separation device

11‧‧‧One entrance

12‧‧‧One rotation room

12a‧‧‧One cone

12b‧‧‧One cylindrical part

13‧‧‧One opening

14‧‧‧A vacuum room

15‧‧‧One discharge

15a‧‧‧ cone

15b‧‧‧Cylinder

16‧‧‧One discharge tube

20‧‧‧Second cyclone separation device

21‧‧‧Secondary entrance

22‧‧‧Secondary revolving room

22a‧‧‧second cone

22b‧‧‧Second cylinder

23‧‧‧Secondary opening

24‧‧‧Secondary vacuum chamber

25‧‧‧second discharge

26‧‧‧Secondary discharge pipe

49‧‧‧Inhalation airway

50‧‧‧Dusting unit

51‧‧‧Exhaust air path

52‧‧‧Filter

53‧‧‧Electric blower

55‧‧‧ Wheels

100‧‧‧Electric vacuum cleaner

113‧‧0 times opening

114‧‧0 times vacuum room

Fig. 1 is a perspective view showing the appearance of an electric vacuum cleaner of the present invention.

Fig. 2 is a perspective view of the cleaner body 5 of the electric vacuum cleaner of Fig. 1.

Fig. 3 is a top view of the cleaner body 5 of Fig. 1.

Figure 4 is an a-a arrow cross section of the cleaner body 5 shown in Figure 2 Figure.

Fig. 5 is a cross-sectional view taken along line b-b of the cleaner body 5 shown in Fig. 2.

Fig. 6 is a top view of the cleaner body 5 in a state in which the dust suction unit 50 is removed.

Fig. 7 is a perspective view showing the appearance of the dust suction unit 50.

Fig. 8 is a front view of the dust suction unit 50.

Fig. 9 is a left side view of the dust suction unit 50.

Fig. 10 is a top view of the dust suction unit 50 of the electric vacuum cleaner of the present invention.

Fig. 11 is a cross-sectional view taken along line A-A of the dust suction unit 50 shown in Fig. 8.

Fig. 12 is a cross-sectional view taken along line B-B of the dust suction unit 50 shown in Fig. 8.

Fig. 13 is a cross-sectional view taken along line C-C of the dust suction unit 50 shown in Fig. 10.

Fig. 14 is a cross-sectional view taken along the line D-D of the dust suction unit 50 shown in Fig. 13.

Fig. 15 is a cross-sectional view taken along the line E-E of the dust suction unit 50 shown in Fig. 13.

Fig. 16 is a cross-sectional view taken along the line F-F of the dust suction unit 50 shown in Fig. 13.

Fig. 17 is a cross-sectional view taken along the line G-G of the dust suction unit 50 shown in Fig. 16.

Fig. 18 is a perspective view of the dust collection unit 50 when it is disposed of.

Fig. 19 is an exploded view of the dust suction unit 50.

50. . . Vacuum unit

20. . . Secondary cyclone separation device

twenty two. . . Secondary revolution chamber

twenty one. . . Secondary inlet

25. . . Secondary discharge

26. . . Secondary discharge pipe

15. . . One discharge port (micro hole)

10. . . Primary cyclone separation device

11. . . One entrance

16. . . One discharge pipe

Claims (7)

A cyclone separating device includes: an inflow port in which dusty air from an external air path flows in; and a swirling chamber formed in a substantially cylindrical shape, the inflow port communicating in a tangential direction to cause dust flowing in from the inflow port The air is rotated to separate the air from the dust; the dust chamber is in communication with the rotary chamber and leaves dust separated from the dusty air; and the discharge port is discharged from the dust-containing air in the swing chamber a blower that generates suction; and a discharge pipe that communicates the blower with the discharge port; wherein the discharge pipe is formed in such a manner that a distribution of a flow velocity flowing at the discharge port at a position near the flow inlet becomes weak The discharge pipe has a bent portion that is bent at a right angle after being pulled out in an axial direction of the rotary chamber, and a discharge direction of the air of the curved portion is located from a tangent position from the rotary chamber to the inflow port to the direction The range in which the direction of rotation of the dust air is rotated by 90°. The cyclone separating apparatus according to claim 1, wherein a distance (X) from a starting point of the bending to a bending starting point at which the discharge pipe starts to be bent is set as a representative length (D) of a cross section of the air passage in the discharge pipe. 25 times or less. A cyclone separation apparatus according to claim 1 or 2, wherein no filter is provided between the discharge port and the starting point of the bending. Such as the cyclone separation device of claim 1 or 2, wherein At least a portion of the side wall of the discharge pipe is disposed to protrude toward the rotary chamber, and at least a portion of the discharge port is formed by a plurality of holes provided in a side wall of the discharge pipe; the discharge port is formed in a portion near the flow inlet Excluded area. A cyclonic separating apparatus according to claim 1 or 2, comprising: an inflow port in which dusty air from an external air path flows in; and a revolving chamber formed in a substantially cylindrical shape, the inflow port being connected in a tangential direction, The dust-containing air flowing in from the inflow port is rotated to separate the air from the dust; the discharge port is to discharge the air separated from the dust-containing air in the revolving chamber; and the second opening portion is configured to rotate the room a second part of the opening is formed in the radial direction of the second opening; a blower that generates suction; and a discharge pipe that communicates with the discharge port; the second opening The discharge pipe is formed at a position lower than the inlet port, and the distribution of the flow velocity at the discharge port is weakened at a position near the second opening. The cyclone separation device according to claim 1 or 2, which comprises: an inflow port, which is a flow of dusty air from an external air path; The swirling chamber is formed in a substantially cylindrical shape, and the inflow port communicates in a tangential direction to rotate the dusty air flowing in from the inflow port to separate the air from the dust; and the discharge port is discharged from the revolving chamber The air separated by the dust-containing air; the second opening is formed by opening a part of the side wall of the rotating chamber; and the second cleaning chamber is disposed outside the radial direction of the second opening; and a blower that generates suction; a discharge pipe that communicates the blower with the discharge port; the discharge pipe has a bent portion that is bent at a right angle after being pulled out in an axial direction of the rotary chamber, and a discharge direction of the air of the curved portion is located opposite to the first 2 The central point of the opening is within 45° of both sides of the plane of the axis of the rotary chamber. An electric vacuum cleaner characterized by comprising a cyclone separation device of claim 1 or 2.