KR20070045856A - Multi-cyclone dust collecting apparatus for vacuum cleaner and collecting method - Google Patents

Abstract

The present invention relates to a multi-cyclone dust collector and a dust collection method for a vacuum cleaner having a plurality of cyclones to form a rising swirling air to separate the dirt. The multi-cyclone dust collector according to the present invention surrounds at least a portion of a primary cyclone unit and a primary cyclone unit for centrifuging the dirt contained in the waste-containing air by making the waste-containing air drawn from the lower side into an upward swirling air flow. And a secondary cyclone unit which suctions the intermediate purified air discharged from the primary cyclone unit to the downward side to create a rising swirling air to centrifuge the residue remaining in the intermediate purified air.

Ascending turning air, primary dust chamber, air induction road, dust collector, reverse

Description

Multi-cyclone dust collecting apparatus for vacuum cleaner and Collecting method

1 is a perspective view showing an embodiment of a multi-cyclone dust collector for a vacuum cleaner according to the present invention,

Figure 2 is an exploded perspective view of the multi-cyclone dust collector for the vacuum cleaner of Figure 1,

Figure 3 is a perspective view of the lower cover of the multi-cyclone dust collector for the vacuum cleaner of Figure 2,

4 is a cross-sectional view IV-IV of the multi-cyclone dust collector for the vacuum cleaner of FIG.

5 is a V-V cross-sectional view of the multi-cyclone dust collector for the vacuum cleaner of FIG.

Figure 6 is a top perspective view showing a state in which the upper cover is removed in the multi-cyclone dust collector for the vacuum cleaner of Figure 1,

7 is a cross-sectional view showing another embodiment of a multi-cyclone dust collector for a vacuum cleaner according to the present invention;

8 is a view showing a vacuum cleaner having a multi-cyclone dust collector for a vacuum cleaner according to the present invention.

* Explanation of symbols for main parts of drawings *

1,101; Multi-cyclone dust collector 10; Primary cyclone unit

20; Primary cyclone body 22; Cyclone

24; Filth outlet 30; Primary dust chamber

31; Dust collecting wall 40; Air communication member

43; Air path 45; Air suction pipe

50; Secondary cyclone unit 60; Secondary cyclone

61; Secondary cyclone body 62; Secondary air intake

66; Air discharge pipe 70; Lower cover

71; Air guide 72; Air hole

80; Top cover 81; Backflow prevention jaw

82; Second sealing portion 83; 1st sealing part

90; Secondary dust collection chamber 91; Dust collector

100; Vacuum cleaner 110; Suction brush

130; Vacuum cleaner main body 131; Vacuum generator

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vacuum cleaner, and more particularly, to a multi-cyclone dust collector and a dust collecting method for separating and collecting dirt from inhaled air using centrifugal force.

In general, the vacuum cleaner generates a suction force with the vacuum generator, and the suction force sucks dirt, dust, etc. (hereinafter referred to as 'dirt') on the surface to be cleaned into the vacuum cleaner body together with the air. Air containing the sucked dirt passes through the dust collector installed in the main body of the vacuum cleaner. Then, the dirt is collected and separated from the air, and only the clean air is discharged to the outside of the vacuum cleaner body.

There are many kinds of dust collectors that separate and collect the dirt from the air containing the dust, such as dust bags and cyclone dust collectors. However, these days, centrifugal force separates the dirt and semi-permanent cyclone dust collectors are widely used. have.

Examples of cyclone dust collectors according to the prior art are described in Publication Nos. 2000-56658, 2000-56659, and the like. The cyclone dust collector according to the prior art has a cylindrical cyclone body in which the sucked air and dirt form a swirling air flow, an air inlet through which air containing dirt is introduced, and an air outlet through which clean air is discharged. do. The air inlet is installed along the tangential direction of the cyclone body on the upper side of the cyclone body so that the incoming air can be easily turned down. The air outlet is formed on the upper surface of the central portion of the cyclone body so as to turn down inside the cyclone body to discharge the air which is re-emerged after the dirt is removed again to the outside of the cyclone dust collector.

However, in the cyclone dust collector according to the prior art, since both the air inlet and the air outlet are formed in the upper portion of the cyclone body, the air entering and descending from the inside of the cyclone body collides with the air discharged and discharged. Occurs. Therefore, the cyclone dust collector according to the prior art has a problem that the dust collection efficiency of the cyclone dust collector is reduced by the collision of the above-mentioned rising air and the falling air.

In addition, the cyclone dust collector having only one cyclone as described above has a problem in that the fine dust is not completely filtered out, and in recent years, by collecting the waste contained in the incoming air in two stages, the fine dust can also be filtered out. Multi-cyclone dust collector has been developed. An example of such a multi-cyclone dust collector is described in Application No. 10-2003-62520. However, even in the case of such a multi-cyclone dust collector, a collision of air occurs as described above, and there is still a problem in which dust collection efficiency is lowered.

In addition, in the conventional cyclone dust collector, since the waste container, in which the waste is collected, uses the same space as the cyclone body at the lower side of the cyclone body, the waste collected by the air descending and then rising again flows back to the air outlet. There was a problem that the dust collection efficiency was bad.

In addition, the cyclone dust collector according to the prior art has a problem that it is difficult to make the vacuum cleaner compact because the cyclone body and the waste container are arranged up and down and the height of the multi-cyclone dust collector is high.

The present invention has been made in view of the above problems, and since the intake air and the discharged air do not collide, the dust collection efficiency is high, and it provides a multi-cyclone dust collector for a vacuum cleaner that can separate and collect fine dirt. The purpose is.

Another object of the present invention is to provide a compact structure, in particular a multi-cyclone dust collector having a low vertical height.

Further, another object of the present invention is to provide a multi-cyclone dust collector for a vacuum cleaner, which is convenient for discharging wastes, since the wastes collected thereon can be discarded.

An object of the present invention as described above, the primary cyclone unit for centrifuging the dirt contained in the waste-containing air to make the waste-containing air introduced from the lower side to the rising swirl air; And a secondary cyclone installed to surround at least a part of the primary cyclone unit, and suctioning intermediate purified air discharged from the primary cyclone unit downwardly to create a rising swirling air to centrifuge the residue remaining in the intermediate purified air. It is achieved by providing a multi-cyclone dust collector for a vacuum cleaner comprising a unit.

Here, the primary cyclone unit is formed in a hollow cylindrical shape, the primary cyclone body that the incoming dirt-containing air is rotated from the inside; An air communication member installed inside the primary cyclone body and discharging the intermediate purified air from which dirt is separated to the plurality of secondary cyclones; A dust collecting wall formed to surround the primary cyclone body and accommodating dirt discharged from the primary cyclone body; And an air suction pipe installed at a lower surface of the primary cyclone body to allow incoming dirt-containing air to form an upward swirling air stream.

In addition, the air communication member is formed in a cylindrical shape, the upper end is open, the other end is formed with a plurality of air passages corresponding to the plurality of secondary cyclones.

And, it is preferable to form an air guide in the center of the lower end of the air communication member.

In addition, the multi-cyclone dust collector for a vacuum cleaner according to the present invention is formed around the primary cyclone unit is formed with a primary dust collecting chamber for collecting dust and dust discharged from the primary cyclone, and around the primary dust collecting chamber A plurality of secondary cyclones are installed.

In this case, the primary cyclone unit may include a plurality of cyclones.

In addition, each of the plurality of secondary cyclones includes a cyclone body, and the upper end of the cyclone body is preferably formed to be inclined in a direction opposite to the primary cyclone unit with respect to the lower end.

In addition, at least one secondary cyclone of the plurality of secondary cyclones may be formed such that a part of an outer circumferential surface is inserted into the primary dust collecting chamber.

In addition, the secondary cyclone unit is installed so as to surround the dust collecting wall, the lower portion is in communication with the lower end of the air communication member, the intermediate purified air introduced through the air communication member to form a rising swirl air flow to the dirt A plurality of secondary cyclones to separate; And a secondary dust collecting chamber surrounding the plurality of secondary cyclones, in which dirt discharged from the plurality of secondary cyclones is collected.

Here, each of the plurality of secondary cyclones, the lower end is formed into a hollow conical shape, the lower secondary secondary cyclone body having a secondary air intake in communication with the lower end of the air communication member; And an air discharge pipe which protrudes from the center of the lower surface of the secondary cyclone body to an upper side in a hollow cylindrical shape and discharges purified air from the secondary cyclone body.

In addition, the upper end of the primary cyclone unit and the secondary cyclone unit is preferably covered with a top cover that can be separated and combined. In this case, it is preferable that a backflow preventing member is installed on the lower surface of the upper cover to prevent the backflow of the primary dust collecting body back to the primary cyclone body, and a dome-shaped dirt guide part is formed at the center of the lower surface of the upper cover.

The secondary dust collecting chamber is formed of a dust collecting cylinder formed in a hollow cylindrical shape so as to surround the plurality of secondary cyclones from the outside, and a space between the dust collecting cylinder and the dust collecting wall connected to both ends thereof, and the primary dust collecting chamber. Is formed as a space between the primary cyclone body and the dust collecting wall and a portion of the dust collecting container not surrounding the plurality of secondary cyclones, and the dust collected in the primary and secondary dust collecting chambers is collected in the dust collecting container. It is desirable to make it visible from the outside.

In another aspect of the present invention, an object of the present invention as described above, the primary cyclone unit for separating the dirt from the outside air; And a secondary cyclone unit that separates dust contained in the air discharged from the primary cyclone unit, the secondary cyclone unit including a plurality of secondary cyclones surrounding at least a portion of the primary cyclone unit. Is achieved by achieving a multi-cyclone dust collector for a vacuum cleaner in which the lower surface of the surface and the lower surface of the secondary cyclone unit are on the same horizontal surface.

In this case, the plurality of secondary cyclones are configured to introduce air from the lower side of the side and discharge the lower portion of the central portion.

In addition, the multi-cyclone dust collector for a vacuum cleaner according to the present invention is formed such that dirt collected in the primary cyclone unit is visible through a portion not surrounded by the plurality of secondary cyclones.

In another aspect of the invention, the dust collection method according to the present invention, (a) at least one step of introducing external air into the lower surface of the first cyclone; (b) discharging dirt contained in the air to the outside of the primary cyclone while the introduced air rotates; (c) discharging the air to the lower surface of the primary cyclone through an air communication member protruding from the lower surface in the primary cyclone; (d) separating the fine dust into the discharged air through the secondary air inlet formed on the lower side of the plurality of secondary cyclones and into the plurality of secondary cyclones to rotate up; and (e) discharging air introduced into the plurality of secondary cyclones to a lower surface of the plurality of secondary cyclones.

At this time, in the step (b), the dirt is discharged through the open upper end of the primary cyclone is collected in the primary dust collecting chamber formed around the primary cyclone.

In the step (d), the fine dirt is discharged to the upper ends of the plurality of secondary cyclones, and the fine dirt discharged in the space between the plurality of secondary cyclones is collected.

Hereinafter, an embodiment of a multi-cyclone dust collector for a vacuum cleaner according to the present invention will be described with reference to the accompanying drawings. However, in the following description of the present invention, if it is determined that the detailed description of the related known functions or components may unnecessarily obscure the subject matter of the present invention, the detailed description and the detailed illustration will be omitted.

1 to 4, the multi-cyclone dust collector 1 for a vacuum cleaner according to the present invention includes a primary cyclone unit 10 and a secondary cyclone unit 50.

In the present embodiment, the primary cyclone unit 10 includes one cyclone, and air containing dirt and dust sucked from the suction brush 110 (see FIG. 8) (hereinafter referred to as dirt-containing air) is moved downward. By being pulled in and rising, the dirt contained in the dirt-containing air is separated by centrifugal force acting on the dirt-containing air to be swiveled. That is, the primary cyclone unit 10 centrifugally separates the dirt contained in the waste-containing air by making the waste-containing air introduced from the lower side into an upward swirling air stream.

The primary cyclone unit 10 includes a primary cyclone body 20, an air communication member 40, a primary dust collecting chamber 30, and an air suction pipe 45.

The primary cyclone body 20 is shaped into a hollow cylinder with an open top and a closed bottom. The dirt-containing air introduced through the air suction pipe 45 pivots inside the primary cyclone body 20 to form an upward swirling airflow. The lower end of the primary cyclone body 20 is blocked by the cyclone lower surface 22. A plurality of air passages 43 are formed on the lower surface of the cyclone lower surface 22. The plurality of air passages 43 guide the air discharged from the primary cyclone body 20 to the plurality of secondary cyclones 60.

The upper side of the primary cyclone body 20 is covered with an upper cover 80. Between the upper end of the primary cyclone body 20 and the upper cover 80 forms a dirt discharge port 24 through which the dirt separated by centrifugal force from the dirt-containing air is discharged to the primary dust collecting chamber 30. The upper cover 80 is preferably formed to be separated and coupled to the dust collecting wall (31).

On the inner surface of the upper cover 80, a backflow prevention jaw 81, a first sealing portion 82, and a second sealing portion 83 are provided. The backflow prevention jaw 81 prevents the waste collected in the primary dust collecting chamber 30 when the multi-cyclone dust collector 1 is inclined and flows back into the primary cyclone body 20 through the waste outlet 24. prevent. The backflow prevention jaw 81 is preferably molded into a cylindrical shape larger than the diameter of the primary cyclone body 20. The first sealing part 83 is inserted into the upper end of the dust collecting wall 31 to prevent the primary dust collecting chamber 30 and the secondary dust collecting chamber 90 from communicating with each other, and corresponds to a cross section of the dust collecting wall 31. Molded into shape. The second sealing part 82 is inserted into the upper end of the dust collecting container 91 to prevent the secondary dust collecting chamber 90 from communicating with the outside, and is molded into a shape corresponding to the cross section of the dust collecting container 91. In addition, the center of the upper cover 80, that is, the inner surface of the backflow prevention jaw 81 is provided with a substantially hemispherical dirt guide portion 84. The dirt guide part 84 is discharged to the primary dust collecting chamber 30 through the dirt discharge port 24, the dirt separated from the air containing waste, the intermediate purification air from which the dirt is separated is discharged to the air communication member 40 To help. In addition, it is preferable to install a handle 85 on one side of the upper cover 80 so that the user can easily open and close the upper cover 80.

The air communication member 40 discharges the air in which the dirt is removed from the dirt-containing air by the centrifugal force in the primary cyclone body 20 (hereinafter referred to as intermediate purification air) to the secondary cyclone unit 50. The air communication member 40 is formed in a hollow cylindrical shape, and is installed to protrude into the inner side of the primary cyclone body 20 at the center of the cyclone lower surface 22. At this time, the upper end of the air communication member 40 is spaced apart from the dirt guide portion 84 of the upper cover 80, the upper and lower ends are open. The lower end of the air communication member 40 is in communication with a plurality of air passages 43 formed on the lower surface of the cyclone lower surface 22. Therefore, the intermediate purified air drawn in through the upper end of the air communication member 40 is drawn into the plurality of secondary cyclones 60 through the plurality of air flow paths 43. In the vacuum cleaner multi-cyclone dust collector 1 according to the present embodiment shown in FIG. 4, the upper end of the air communication member 40 does not come into contact with the inner surface of the upper cover 80, that is, the dirt guide 84. have. However, in another embodiment, as shown in FIG. 7, the upper end of the air communication member 40 ′ may extend to contact the dirt guide portion 84 of the upper cover 80. In this case, a plurality of exhaust holes 41 are formed on the surface of the air communication member 40 'to discharge the intermediate purified air. The plurality of exhaust holes 41 are formed of numerous small holes to filter out large dirt moving along the intermediate purification air.

The primary dust collecting chamber 30 is installed to surround the primary cyclone body 20 and accommodates the dirt discharged by the centrifugal force from the primary cyclone body 20. The primary dust collecting chamber 30 includes a primary cyclone body 20, a dust collecting wall 31 formed in a substantially cylindrical shape surrounding the primary cyclone body 20, and a plurality of secondary cyclones 60 in the dust collecting container 91. ) Is made up of a space between the portions (91a) do not wrap. The upper end of the primary dust collecting chamber 30 is blocked by the upper cover 80 covering the upper end of the primary cyclone body 20, and the lower end of the primary dust collecting chamber 30 is blocked by the cyclone lower surface 22. .

The air suction pipe 45 communicates with the suction brush 110 and is formed below the primary cyclone body 20 so that the dirt-containing air introduced into the primary cyclone body 20 forms an upward swirling airflow. That is, the air suction pipe 45 is formed to penetrate upward with respect to the bottom of the primary cyclone body 20 through the cyclone lower surface 22. Therefore, the dirt-containing air introduced from the suction brush 110 forms an upward swirling air flow in the primary cyclone body 20. In addition, the bottom portion of the primary cyclone body 20 of the cyclone lower surface 22 to which the air suction pipe 45 is connected is formed with an inclined surface 27 inclined upward in the moving direction of the air containing the dirt. The inclined surface 27 allows the dirt-containing air introduced into the primary cyclone body 20 through the air suction pipe 45 to easily form an upward turning airflow. The inclined surface 27 is formed in a spiral shape starting from the lower end of the outlet 45a of the air suction pipe 45 and then running along the air communication member 40 to the upper side of the outlet 45a of the air suction pipe 45.

The secondary cyclone unit 50 is included in the intermediate purified air by centrifugal force acting on the intermediate purified air by turning the intermediate purified air discharged from the above-described primary cyclone unit 10 to enter and rise upward. The fine dirt is separated and the purified air is discharged to the vacuum generator 131 (see FIG. 8). At this time, the intermediate purification air contains fine dirt not removed from the primary cyclone unit 10, the secondary cyclone unit 50 removes the fine dirt remaining in the intermediate purification air by centrifugal force.

2 to 6, the secondary cyclone unit 50 includes a plurality of secondary cyclones 60 and a secondary dust collecting chamber 90.

The plurality of secondary cyclones 60 are installed to surround at least a portion of the primary cyclone unit 10, and suction the intermediate purified air discharged from the primary cyclone unit 10 downward to create an upward swirling airflow. The dirt remaining in the intermediate purification air is centrifuged by the centrifugal force acting on the swirling air, and the purified air is discharged from the plurality of secondary cyclones 60 to the vacuum generator 131 (see FIG. 8). In this case, the plurality of secondary cyclones 60 are installed to surround the dust collecting wall 31 from the outside as shown in FIGS. 4 to 6. In the present embodiment, fifteen secondary cyclones 60 have the same center as the air communication member 40 and are arranged in a substantially C-type. As such, when the plurality of secondary cyclones 60 do not completely cover the primary cyclone unit 10, the amount of dirt collected in the primary dust collecting chamber 30 through the portion where the secondary cyclone 60 is not installed is provided. It can be seen. Therefore, it is convenient because the user does not need to open the upper cover 80 to know the amount of dirt collected in the primary dust collecting chamber 30. To this end, it is preferable to form the dust collecting container 91 with a transparent material. Then, it is easy for the user to grasp the amount of dirt collected in each of the primary dust collecting chamber 30 and the secondary dust collecting chamber 90 without opening the upper cover 80.

Each of the plurality of secondary cyclones 60 includes a secondary cyclone body 61 and an air discharge pipe 66. Secondary cyclone body 61 is formed in a substantially hollow conical shape, the top and bottom are open. As shown in FIGS. 4 and 6, the plurality of secondary cyclone bodies 61 have a portion 61b of the body formed in parallel with the dust collecting wall 31, and the plurality of secondary cyclone bodies 61 are collectively housed. It is surrounded by pain 91. In this embodiment, a part of the dust collecting container 91 forms a part 61b of the secondary cyclone body 61. At this time, a portion 61a of the lower portion of the plurality of secondary cyclone bodies 61 protrudes to the inside of the dust collecting wall 31, and the lower ends of two adjacent secondary cyclone bodies 61 are installed to be in contact with each other. The plurality of secondary cyclone bodies 61 is formed to be lower than the upper end of the dust collecting container 91. Lower ends of the plurality of secondary cyclone bodies 61 communicate with the plurality of air passages 43 at the cyclone lower surface 22. Where each secondary cyclone body 61 and the air flow path 43 meets, a secondary air inlet 62 is formed. Therefore, the intermediate purified air passing through the air passage 43 is introduced into the secondary cyclone body 61 through the secondary air inlet 62 to form an upward turning air stream.

The air discharge pipe 66 is installed in a hollow cylindrical shape so as to protrude upward from the bottom center of the secondary cyclone body 61 and is in communication with the vacuum generator 131. The top and bottom of the air discharge pipe 66 is open, the top of the air discharge pipe 66 is formed so that the height is lower than the top of the secondary cyclone body (61). Therefore, the fine dust is removed by the centrifugal force inside the secondary cyclone body 61, and the purified air is discharged to the vacuum generator 131 through the air discharge pipe 66. At this time, although not shown, an air confluence member may be installed under the plurality of air discharge pipes 66 so that the air discharged through the plurality of air discharge pipes 66 may be collected into one and communicate with the vacuum generator 131.

The secondary dust collecting chamber 90 is a place where the waste discharged from the plurality of secondary cyclones 60 is collected, and the space between the dust collecting wall 31, the dust collecting tube 91, and the plurality of secondary cyclone bodies 61. Is formed. Dust collector 91 is formed in a hollow cylindrical shape surrounding the plurality of secondary cyclones 60 from the outside, the dust collecting wall 31 is formed to surround the plurality of secondary cyclones 60 from the inside. Therefore, as shown in FIG. 6, both ends of the dust collecting wall 31 are connected to the dust collecting container 91, and the dust collecting part 91a which does not surround the secondary cyclone 60 has the primary dust collecting chamber 30. Forms a side wall of the. In addition, the lower end of the secondary dust collecting chamber 90 is blocked by a plurality of secondary cyclone bodies 61. Therefore, the dirt discharged from the plurality of secondary cyclone bodies 61 is accumulated in the space between the dust collecting wall 31 and the dust collecting container 91 and the plurality of secondary cyclone bodies 61.

The lower cover 70 covers the lower surface of the cyclone 22 to form a plurality of air flow paths 43, and forms a lower surface of the secondary cyclone body 61. Thus, as shown in FIG. 3, it is preferable to form the air discharge pipes 66 of the plurality of secondary cyclones 60 integrally with the lower cover 70. As such, when the lower cover 70 and the plurality of air discharge pipes 66 are integrally formed, injection molding is convenient. In the lower cover 70, an air guide portion 71, an air hole 72, and a blocking wall 73 are formed. The air guide part 71 is formed in a substantially conical shape in the center of the lower cover 70, and guides the intermediate purified air discharged along the air communication member 40 to the plurality of air flow paths 43. At this time, it is preferable to install an air stabilization plate 74 on the upper side of the air guide portion 71 to stabilize the air flow in the air communication member (40). The air hole 72 is formed in a portion where the plurality of air discharge pipes 66 are not formed, and forms an inlet of the air suction pipe 45. The blocking wall 73 is formed at one side of the air hole 72, and forms a part of the air discharge pipe 45 when the lower cover 70 is assembled to the cyclone lower surface 22 described above.

Hereinafter, with reference to the accompanying drawings will be described in detail the operation and operation of the multi-cyclone dust collector 1 for a vacuum cleaner according to the present invention.

When the vacuum cleaner is operated, the vacuum generator 131 (see FIG. 8) is operated to generate suction force. By this suction force, air containing dirt (hereinafter, air containing dirt) is sucked into the suction brush 110 (see FIG. 8) from the surface to be cleaned. The dirt-containing air sucked into the suction brush 110 moves to the multi-cyclone dust collector 1 in communication with the suction brush 110 through the communication means 121 and 122 (see FIG. 8).

The dirt-containing air moving to the multi-cyclone dust collector 1 is introduced into the primary cyclone body 20 through the air suction pipe 45 of the primary cyclone unit 10. The dirt-containing air introduced through the air suction pipe 45 forms a rising swirling air flow that swings inside the primary cyclone body 20 and rises. At this time, since the inclined surface 27 is provided in front of the air inlet pipe 45 and the outlet 45a inside the cyclone body 20, the introduced intermediate purified air easily forms an upward turning air stream. The dirt is then separated from the dirt-containing air by centrifugal force acting on the rising swirl airflow. The separated dirt is discharged and accumulated in the primary dust collecting chamber 30 through the waste discharge port 24 formed between the upper end of the primary cyclone body 20 and the upper cover 80 as shown by arrow A of FIG. 4. Since the primary dust collecting chamber 30 is isolated from the swirling air flow by the primary cyclone body 20, the collected dirt does not affect the rising swirling air in the primary cyclone body 20. In addition, since the air introduced into the primary cyclone body 20 to form an upward swirling air flows straight out through the air communication member 40, air collision does not occur in the primary cyclone body 20. Therefore, the dust collection efficiency of the multi-cyclone dust collector 1 is improved.

The intermediate purified air from which the dirt is removed from the primary cyclone body 20 is introduced into the upper end of the air communication member 40 and flows to the lower end of the air communication member 40. The intermediate purified air passing through the air communication member 40 is distributed to the plurality of air passages 43 surrounding the air guide portion 71 while colliding with the air guide portion 71 of the lower cover 70. Then, the intermediate purified air is introduced into the secondary air inlet 62 of each of the plurality of secondary cyclones 60 along each air passage 43.

The intermediate purified air drawn into the secondary air inlet 62 forms an upward swirling air flow inside the secondary cyclone body 61. Then, fine dirt is separated from the intermediate purification air by centrifugal force acting on the rising swirl airflow. The separated fine dirt is discharged and accumulated in the secondary dust collecting chamber 90 beyond the upper end of the secondary cyclone body 61 (see arrow B of FIG. 4). At this time, since the secondary dust collecting chamber 90 is isolated by the secondary cyclone body 61, the separated dirt does not affect the rising swirl airflow in the secondary cyclone body 61. In addition, since the air introduced into the secondary cyclone body 61 to form an upward swirling air flows straight out through the air discharge pipe 66, the collision of air does not occur in the secondary cyclone body 61. Therefore, the dust collection efficiency of the multi-cyclone dust collector 1 is improved.

The purified air from which fine dirt is removed while turning up and down in the secondary cyclone body 61 is discharged through the air discharge pipe 66. In the plurality of secondary cyclones 60, fine dirt is removed from the intermediate purified air by the same operation as described above, and the purified air is discharged through the plurality of air discharge pipes 66. The air discharged to the air discharge pipe 66 passes through the vacuum generator 131 and is discharged to the outside of the vacuum cleaner body 130.

If an air confluence member (not shown) is provided below the plurality of air discharge pipes 66, the purified air discharged through each of the air discharge pipes 66 of the plurality of secondary cyclones 60 is air. After being gathered into one by the joining member, it is discharged toward the vacuum generator 131.

The user can know the amount of dirt collected in each of the primary dust collecting chamber 30 and the secondary dust collecting chamber 90 through the transparent dust collecting container 91 without the upper cover 80 being opened. If it is confirmed that the primary dust collecting chamber 30 or the secondary dust collecting chamber 90 is full of dirt, it is necessary to empty the primary dust collecting chamber 30 and the secondary dust collecting chamber 90.

When the waste collected in the primary and secondary dust collection chambers 30 and 90 is to be emptied, the user first covers an upper cover 80 covering the upper ends of the primary dust collection chamber 30 and the secondary dust collection chamber 90. ). At this time, holding the handle 85 of the upper cover 80 is convenient. Next, when the multi-cyclone dust collector 1 is turned upside down, dirt accumulated in the primary dust collecting chamber 30 and the secondary dust collecting chamber 90 can be discarded. As such, the structure capable of confirming the amount of dirt collected in the primary and secondary dust collecting chambers 30 and 90 without opening the upper cover 80 is frequently used to check the amount of the collected dirt. Since there is no need for heat, the usability of the vacuum cleaner is improved. In addition, the structure that can discard the waste collected in the primary and secondary dust collecting chambers (30, 90) by opening the upper cover 80, the user can discard while seeing the discharged waste to open the lower cover (70) Compared with the structure for discharging dirt, the discharge of dirt is more convenient.

In addition, the multi-cyclone dust collector 1 for a vacuum cleaner according to the present invention is provided with a backflow prevention jaw 81 on the upper cover 80, so that the primary cyclone dust collector 1 is in the case of tilting. It is possible to reduce backflow of dirt collected at the truth 30 to the primary cyclone body 20 through the dirt outlet 24.

Hereinafter, as another aspect of the present invention, an example of the vacuum cleaner 100 provided with the multi-cyclone dust collector 1 according to the present invention described above will be described.

Referring to FIG. 7, the vacuum cleaner 100 according to an embodiment of the present invention includes a suction brush 110, an extension tube 121, a flexible hose 122, and a cleaner body 130.

The suction brush 110 has a dirt suction port on the bottom surface to suck air (dirt containing air) including dirt from the surface to be cleaned.

The extension tube 121 and the flexible hose 122 communicate with the suction brush 110 and the cleaner body 130, and a handle 120 is provided at an upper end of the extension tube 121. The handle 120 is usually provided with a power switch 123 for turning on the power of the vacuum cleaner (100).

The vacuum cleaner body 130 is provided with a vacuum generator 131 and a multi-cyclone dust collector 101. The vacuum generator 131 generates a suction force for sucking dirt and air through the suction brush 110 and is in communication with the multi-cyclone dust collector 101. The multi-cyclone dust collector 101 separates and collects dirt from the dirt-containing air sucked from the suction brush 110. The multi-cyclone dust collector 101 is a primary cyclone unit that separates and collects relatively large dirt by making the external air into a rising swirling air, and separates and collects fine dust by making the air discharged from the primary cyclone unit into a rising swirling air. It consists of a secondary cyclone unit. Since the structure and operation of the multi-cyclone dust collector 101 is the same as the multi-cyclone dust collector 1 described above, a detailed description thereof will be omitted.

Therefore, if the suction brush 110 is moved from the surface to be cleaned after the power switch 123 of the vacuum cleaner 100 is turned on, the surface to be cleaned is sucked into the dirt suction port of the suction brush 110 by the suction force of the vacuum generator 131. Dirt is inhaled. The dirt sucked into the suction brush 110 is introduced into the multi-cyclone dust collector 101 through the extension pipe 121 and the flexible hose 122. The dirt introduced into the multi-cyclone dust collector 101 is separated and collected by the primary and secondary cyclone units 10 and 50 (see FIG. 4) and then discharged to the outside of the cleaner body 130.

In the above, as a vacuum cleaner having a multi-cyclone dust collector according to the present invention has been described as an example of a canister vacuum cleaner, the multi-cyclone dust collector according to the present invention can be applied to various kinds of vacuum cleaners such as upright vacuum cleaners. have.

As described above, according to the multi-cyclone dust collector for a vacuum cleaner according to the present invention, the dust collection efficiency is high because the air suctioned from the primary cyclone unit and the secondary cyclone unit does not collide with each other.

In addition, the multi-cyclone dust collector for the vacuum cleaner according to the present invention is configured to separate the dirt again while passing through the secondary cyclone unit continuously after the large dirt is separated while the waste-containing air passes through the primary cyclone unit. Because of this, fine dirt can be separated.

In addition, the multi-cyclone dust collector for a vacuum cleaner according to the present invention has a dust collection efficiency for separating and collecting dust because the space in which the rising swirling air is formed and the space in which the waste is collected are separated separately in both the primary and secondary cyclone units. This is high.

In addition, since the multi-cyclone dust collector for the vacuum cleaner according to the present invention can be made by integrally injection molding the air communication member, the primary cyclone body, the dust collecting wall, the plurality of secondary cyclone bodies, the dust collector, and the cyclone lower surface, the assembly work Can be reduced.

In addition, since the secondary cyclone unit is installed on the outer circumferential surface of the primary cyclone unit and the lower end thereof is located on the same plane, the multi-cyclone dust collector according to the present invention is compact. In particular, it is possible to reduce the height of the multi-cyclone dust collector.

In addition, the multi-cyclone dust collector for vacuum cleaners and vacuum cleaners having the same according to the present invention are provided with a backflow prevention jaw to prevent dirt collected in the primary dust chamber from flowing back to the primary cyclone body even when the vacuum cleaner is turned over. can do.

In addition, the multi-cyclone dust collector for a vacuum cleaner according to the present invention is convenient because it is possible to check the amount of dirt collected in the primary and secondary dust chambers without opening the upper cover, and it is designed to discard the dirt by opening the top cover. As a result, it is convenient to dispose of the waste collected in the primary and secondary dust chambers.

The present invention is not limited to the specific embodiments described above, but can be performed by a person skilled in the art to which the present invention pertains without departing from the spirit of the present invention described in the claims below. Substitutions, additions, deletions, and alterations fall within the scope of the claims.

Claims (20)

A primary cyclone unit for centrifuging the dirt contained in the dirt-containing air by making the waste-containing air drawn in from the lower side into an upward turning air stream; And It is installed to surround at least a portion of the primary cyclone unit, the secondary cyclone unit for sucking the intermediate purified air discharged from the primary cyclone unit to the lower side to create a rising swirling air to centrifuge the residue remaining in the intermediate purified air Multi-cyclone dust collector for a vacuum cleaner comprising a. The method of claim 1, wherein the primary cyclone unit, A primary cyclone body is formed into a hollow cylindrical shape, the incoming dirt-containing air pivots from the inside; An air communication member installed inside the primary cyclone body and discharging the intermediate purified air from which dirt is separated to the plurality of secondary cyclones; A dust collecting wall formed to surround the primary cyclone body and accommodating dirt discharged from the primary cyclone body; And And an air suction pipe installed at a lower surface of the primary cyclone body and allowing incoming dirt-containing air to form an upward swirling airflow. 2. The method of claim 2, wherein the air communication member, It is formed in a cylindrical shape, the upper end is open, the other end is a multi-cyclone dust collector for a vacuum cleaner, characterized in that a plurality of air passages corresponding to the plurality of secondary cyclones is formed. The multi-cyclone dust collector for a vacuum cleaner of claim 3, wherein an air guide part is formed at the center of the lower end of the air communication member. The method of claim 2, wherein the secondary cyclone unit, A plurality of secondary cyclones installed to surround the dust collecting wall, and having a lower side communicating with a lower end of the air communicating member, and forming intermediate purified air introduced through the air communicating member into an upward swirling airflow to separate the dirt; And And a secondary dust collecting chamber surrounding the plurality of secondary cyclones, and the wastes discharged from the plurality of secondary cyclones are collected. The method of claim 5, wherein each of the plurality of secondary cyclones, A secondary cyclone body is formed in a hollow conical shape of the lower end is blocked, the secondary cyclone body having a secondary air intake in communication with the lower end of the air communication member; And And a hollow cylindrical shape protruding from the center of the lower surface of the secondary cyclone body to the upper side, and an air discharge pipe through which the purified air is discharged from the secondary cyclone body. 6. The multi-cyclone dust collector for a vacuum cleaner of claim 5, wherein the upper ends of the primary cyclone unit and the secondary cyclone unit are covered with a top cover that can be separated and combined. The multi-cyclone dust collector for a vacuum cleaner of claim 7, wherein a backflow preventing member is installed on a lower surface of the upper cover to prevent dirt from the primary dust chamber from flowing back to the primary cyclone body. The multi-cyclone dust collector for a vacuum cleaner of claim 8, wherein a dome-shaped dirt guide part is formed at the center of the lower surface of the upper cover. The method of claim 1, The primary cyclone unit is formed around the primary dust collecting dust or dust discharged from the primary cyclone is formed, the vacuum cleaner, characterized in that a plurality of secondary cyclones are installed around the primary dust chamber Multi cyclone dust collector. The method of claim 10, The primary cyclone unit is a multi-cyclone dust collector for a vacuum cleaner, characterized in that it comprises a plurality of cyclones. The method of claim 10, Wherein each of the plurality of secondary cyclones comprises a cyclone body, wherein an upper end of the cyclone body is inclined in a direction opposite to the primary cyclone unit with respect to a lower end thereof. The method of claim 12, At least one secondary cyclone of the plurality of secondary cyclones, a portion of the outer peripheral surface of the vacuum cleaner, characterized in that the multi-cyclone dust collector for the primary dust chamber. The method of claim 5, wherein the secondary dust chamber, A dust collecting cylinder formed in a hollow cylindrical shape so as to surround the plurality of secondary cyclones from the outside, and a space between the dust collecting cylinder and the dust collecting wall connected to both ends thereof, The primary dust collecting chamber, A space between the primary cyclone body and the dust collecting wall and a portion of the dust collecting container not surrounding the plurality of secondary cyclones, Multi-cyclone dust collector for a vacuum cleaner, characterized in that dirt collected in the primary and secondary dust chambers are visible from the outside of the dust collector. A primary cyclone unit for separating dirt from outside air; And a secondary cyclone unit that separates dust contained in the air discharged from the primary cyclone unit and includes a plurality of secondary cyclones surrounding at least a portion of the primary cyclone unit. And a lower surface of the primary cyclone unit and a lower surface of the secondary cyclone unit are on the same horizontal plane. The method of claim 15, The plurality of secondary cyclones is a multi-cyclone dust collector for a vacuum cleaner, characterized in that the air flows in from the lower side of the lower side to the central portion. The method of claim 15, Multi-cyclone dust collector for a vacuum cleaner, characterized in that the dirt collected in the primary cyclone unit is visible through a portion not surrounded by the plurality of secondary cyclones. (a) introducing external air into the bottom surface of at least one primary cyclone; (b) discharging dirt contained in the air to the outside of the primary cyclone while the introduced air rotates; (c) discharging the air to the lower surface of the primary cyclone through an air communication member protruding from the lower surface in the primary cyclone; (d) separating the fine dust into the discharged air through the secondary air inlet formed on the lower side of the plurality of secondary cyclones and into the plurality of secondary cyclones to rotate up; (e) a step of discharging air introduced into the plurality of secondary cyclones to the lower surface of the plurality of secondary cyclones; dust collection method comprising a. The method of claim 18, wherein step (b), And the dust is discharged through the open upper end of the primary cyclone and collected in the primary dust collecting chamber formed around the primary cyclone.  The method of claim 18, wherein step (d), The fine dust is discharged to the upper end of the plurality of secondary cyclones, the dust collecting method characterized in that the fine dirt discharged in the space between the plurality of secondary cyclones is collected.

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