KR20220061939A - Dust collector and vacuum cleaner having the same - Google Patents

Abstract

The present invention provides a dust collector to increase dust separation performance and a vacuum cleaner including the same. According to the present invention, the dust collector comprises a cyclone unit including of a set of axial flow cyclones separating fine dust from air introduced in the axial direction. The set includes casings forming an outer wall around a hollow part and a fine dust separation member disposed on the casings to form the axial flow-type cyclones together with the casings. The fine dust separation member includes: vortex finders disposed inside each of the casings; band parts formed to surround at least a part of the outer circumferential surface of each of the vortex finders at a position spaced apart from each of the vortex finders, mounted on the casings, and having shapes corresponding to the casings to form outer walls of each of the axial flow cyclones together with the casings; and guide vanes disposed between the vortex finders and the band parts to be connected to the vortex finders and the band parts, and extending in a spiral direction. The vortex finders, the band parts, and the guide vanes adjacent to each other have an integrated structure.

Description

Dust collector and vacuum cleaner having same

The present invention relates to a dust collector for a vacuum cleaner configured to separate and collect dust and fine dust from air using a multi-cyclone.

A vacuum cleaner is a device that sucks in air by using suction power, separates dust or fine dust contained in the air from the air, and discharges clean air.

The types of vacuum cleaners can be classified into i) a canister type, ii) an upright type, iii) a hand type, iv) a cylindrical floor type, and the like.

A canister-type vacuum cleaner is a vacuum cleaner that is most commonly used at home today, and is a vacuum cleaner in which a suction nozzle and a cleaner body are connected to each other by a connecting member. The canister type is suitable for cleaning hard floors because it cleans only with suction power.

On the other hand, the upright type vacuum cleaner is a vacuum cleaner in which the suction nozzle and the cleaner body are integrally formed. Since the upright type vacuum cleaner has a rotating brush, unlike the canister type vacuum cleaner, it can clean the dust in the carpet.

A cyclone used in a vacuum cleaner may be classified into a tangential inflow cyclone and an axial cyclone according to an air inflow direction.

The structure of the tangential inflow cyclone can be found in Korean Patent Publication No. 10-0673769 (hereinafter, Patent Document 1). As disclosed in Patent Document 1, the tangential inflow cyclone is provided with a tangential guide to form a helical flow. In the case of a tangential inflow cyclone, air is introduced in a tangential direction to the outside through a structure such as a tangential guide, and the spiral flow is formed by a structure in which air is introduced in the tangential direction. The tangential flow cyclone has the advantage of being simple in structure and advantageous in circular arrangement, so that it is suitable for installation in a limited space such as a vacuum cleaner. On the other hand, the tangential inflow cyclone has a disadvantage in that a large pressure loss occurs due to the high-speed flow eccentric to one side.

The structure of the axial flow cyclone can be found in Korean Patent Application Laid-Open No. 10-2010-0061320 (hereinafter, Patent Document 2). As disclosed in Patent Document 2, the axial flow cyclone is provided with a spiral blade for forming a spiral flow. In the case of an axial flow cyclone, flow is introduced in the axial direction, and the axial flow cyclone is configured to generate a swirling flow using a spiral blade or the like. The axial flow cyclone has the advantages of proper flow rate and uniform suction compared to the tangential inflow cyclone, and thus has the advantage of low pressure loss. On the other hand, the axial flow cyclone has a disadvantage in that it is difficult to manufacture the guide vanes.

As described above, it is preferable to use an axial flow cyclone to reduce the pressure loss as much as possible to improve the overall efficiency of the vacuum cleaner. However, conventional vacuum cleaners using an axial flow cyclone have several problems as follows.

First, as disclosed in Patent Document 2, conventional vacuum cleaners having a plurality of axial flow cyclones are configured such that a plurality of separately manufactured axial flow cyclones gather to separate dust or fine dust. Axial flow cyclones are separately produced in molds of the same shape so that they have the same shape as each other. Since each of the axial flow cyclones produced in the mold has a gap between the outer wall and the spiral blade or a gap between the guide vanes, there is a disadvantage in that the separation performance is unavoidable according to the structure.

In addition, since vacuum cleaners are industrial products, each axial flow cyclone undergoes an assembly process after mass production. Axial flow cyclones disclosed in Patent Document 2 are also expected to undergo this process. Each axial flow cyclone is formed by separately producing a vortex finder having a guide vane and an outer wall, then inserting and assembling a vortex finder inside the outer wall. Therefore, there was a cumbersome process of assembling each axial flow cyclone.

Furthermore, the axial flow cyclones produced in the mold had the disadvantage of not having a complex shape for realizing high separation performance. Axial flow cyclones are generally produced by an upper mold and a lower mold. The reason why it is difficult for axial flow cyclones to have a complex shape is because of the limitation in mold production.

A first object of the present invention is to provide a plurality of axial flow cyclones formed by an integral member and a dust collector including the same in order to solve problems such as degradation of separation performance and cumbersome processes due to the separate production of axial flow cyclones. is to suggest

A second object of the present invention is to propose a dust collector having an axial flow cyclone having a structure in which the outer wall and the guide vane are connected to each other so as to solve the problem of deterioration of the separation performance of the dust collector caused by the gap between the outer wall and the guide vane.

A third object of the present invention is to propose a dust collector having axial flow cyclones of a structure in which the guide vanes overlap each other in one direction to solve the problem of deterioration of the separation performance of the dust collector caused by the gap between the guide vanes. will be.

A fourth object of the present invention is to propose a coupling structure between an integral member and a case made to simplify the assembly process of the axial flow cyclones.

A fifth object of the present invention is to propose a dust collector having an integral auxiliary member capable of supplementing the separation performance of the integral member.

A dust collector according to a first embodiment of the present invention includes a cyclone unit comprising a set of axial flow cyclones that separate fine dust from air introduced in an axial direction, wherein the set of axial flow cyclones separates casings and fine dust It is formed by the joining of members. The fine dust separation member is a single member (or an integral member) including vortex finders, bands, and guide vanes. There are features of the invention.

This feature distinguishes it from a conventional structure in which a vortex finder having a guide vane is combined with a casing to form individual axial flow cyclones, and then collects the individual axial flow cyclones to form a set of axial flow cyclones. In the present invention, since the fine dust separation member, which is a single member, includes vortex finders, bands, and guide vanes, a set of axial flow cyclones is formed only by combining the fine dust separation member and the casing, and it is simpler than the conventional configuration. The assembly process can be implemented.

The vortex finders of the fine dust separation member are disposed inside each of the casings, and the casings each form an outer wall around the hollow part. Accordingly, it can be understood that the vortex finders are disposed in the hollow part of the casings.

The band portions are formed to surround the outer circumferential surface of each vortex finder at a position spaced apart from each vortex finder, and are seated in the casings to form outer walls of each axial flow cyclones together with the casings. Shapes corresponding to the casings have In that the band portions and the casings are separate parts or have shapes corresponding to each other, the two together form the outer walls of the axial flow cyclones as if they were one part. Since each of the band portions is spaced apart from each of the vortex finders and has a shape corresponding to the casings, it may be understood that the casings are also spaced apart from the vortex finders.

Finally, guide vanes are disposed between the vortex finders and the band parts, are connected to the vortex finders and the band parts, and extend in a spiral direction. Accordingly, the vortex finders and the band portions spaced apart from each other are connected by guide vanes, and from this, it can be understood that the outer walls of the axial flow cyclones and the vortex finders are connected by the guide vanes.

The axial flow cyclone of the present invention thus formed is distinguished from the structure of the conventional axial flow cyclone. In the case of the conventional axial flow cyclone, the vortex finder and the outer wall are spaced apart from each other, so there is a problem of degradation in separation performance due to the gap. On the other hand, in the axial flow cyclone of the present invention, since the vortex finder and the outer wall are connected to each other by the guide vanes, there is no gap therebetween, and the separation performance is not degraded due to the gap. Therefore, the axial flow cyclone of the present invention can be expected to improve the separation performance compared to the prior art.

The axial flow cyclones of the present invention may be applied as a secondary cyclone unit of a dust collector including a primary cyclone unit and a secondary cyclone unit. The primary cyclone unit is formed to separate dust from the air introduced from the outside, and the secondary cyclone unit is formed of a set of axial flow cyclones to separate fine dust from the air. Here, the concept of a multi-cyclone including a primary cyclone unit and a secondary cyclone unit may be introduced.

One side of the guide vanes may be connected to the outer circumferential surface of the vortex finders in a spiral direction, and the other end of the guide vanes may be connected to the inner circumferential surface of the band portions along the spiral direction. In addition, the guide vanes may extend from the lower ends of the band portions to the upper ends of the band portions in a spiral direction to form the same height as the band portions. According to this structure, since there is no gap between the guide vanes and the band portions, the problem of degradation in separation performance due to the gap can be solved.

Axial flow cyclones may be divided into first axial flow cyclones and second axial flow cyclones according to their location. The first axial flow cyclone is disposed centrally, and the second axial flow cyclones are disposed radially about the first axial flow cyclone. The first axial cyclones are singular in that they are centrally disposed, but the second axial cyclones are plural in that they are radially disposed.

The band portions of the first axial flow cyclone and the band portions of the second axial flow cyclones may be connected to each other, so that the band portions are connected to each other to form a single member or an integral member. Furthermore, a flow path of air and fine dust is formed between the band portion of the first axial flow cyclone and the band portions of the second axial flow cyclone, so that air and fine dust flow from the primary cyclone unit to the secondary cyclone unit without a separate flow path structure. it is possible to move

The fine dust separation member includes an outer band portion, and the outer band portion is formed to surround the band portions of the second axial flow cyclones to form an edge of the fine dust separation member and is connected to the band portions of the second axial flow cyclones. A flow path of air and fine dust is formed between the band parts of the second axial flow cyclones and the outer band part, so that air and fine dust can flow from the primary cyclone unit to the secondary cyclone unit without a separate flow path structure. The outer band portion together with the casings form the outer wall of the secondary cyclone portion. The outer band part may be classified into an optional configuration according to the design, but it is preferable that the fine dust separating member includes the outer band for stable coupling of the inner case and the fine dust separating member.

The dust collector includes an outer case and an inner case, and the fine dust separation member is formed to be seated on the inner case. The outer case forms an exterior of the dust collector and an outer wall of the primary cyclone unit. The inner case is installed inside the outer case to surround the casings and the outer band, and includes an inner case having a step portion formed along an inner circumferential surface to support the outer band.

Since the casings are fixed to the inner case, the arbitrary relative rotation of the fine dust separation member and the inner case means the relative rotation of the fine dust separation member and the casings. Therefore, when the fine dust separation member is arbitrarily rotated relative to the inner case, the structure of the axial flow cyclones is deformed. The fine dust separating member is seated on the step portion, and the fine dust separating member and the inner case are configured to prevent arbitrary relative rotation using a position fixing groove and a position fixing protrusion.

A dust collector according to a second embodiment of the present invention includes a fine dust separation member and an auxiliary member, and the set of axial flow cyclones is formed by coupling the casings, the fine dust separation member, and the auxiliary member. The casings and the fine dust separating member are the same as those of the first embodiment, and the auxiliary member is configured to assist the function of the fine dust separating member.

The auxiliary member is seated on the fine dust separation member, and includes cover parts, auxiliary band portions, and auxiliary guide vanes. The cover parts are formed to surround the outer circumferential surface of each vortex finder to prevent coupling of the auxiliary member and the fine dust separation member and arbitrary relative rotation. Furthermore, it may be understood that the cover parts form the outer wall of the vortex finders in that they surround the outer peripheral surfaces of the vortex finders.

Auxiliary bands are for supporting the bands of the fine dust separation member, are formed to surround the outer peripheral surface of each cover at a position spaced apart from each of the cover parts, are seated on the bands, and each with the casings and the bands It has a shape corresponding to the band portions to form outer walls of the axial flow cyclones. The auxiliary band portions, the band portions, and the casings are three separate parts, but three together form the outer walls of the axial flow cyclones as if one part in that they have a shape corresponding to each other.

Finally, the auxiliary guide vanes are for assisting the guide vanes of the fine dust separation member. One side of the auxiliary guide vanes is connected to the outer circumferential surface of the cover parts along the spiral direction, and the other side is on the inner circumferential surface of the auxiliary bands along the spiral direction. connected Accordingly, it can be understood that the cover portions and the auxiliary band portions spaced apart from each other are connected by auxiliary guide vanes, and from this, the outer walls of the axial flow cyclones and the outer walls of the vortex finders are connected by the auxiliary guide vanes.

Like the fine dust separation member, each of the auxiliary guide vanes is in contact with each of the guide vanes and continuously extends along the helical direction. In addition, each of the auxiliary guide vanes is formed to be in surface contact with each of the guide vanes. Although the fine dust separation member and the auxiliary member are separate parts, the guide vanes and the auxiliary guide vanes continuously extend along the spiral direction and surface contact each other to form spiral blades as if they were a single component.

Accordingly, an overlap structure that cannot be formed in a single part manufactured in a mold may be implemented. The guide vanes may include a first guide vane and a second guide vane disposed adjacent to each other, and the auxiliary guide vanes may include: a first auxiliary guide vane continuously extending in a spiral direction in contact with the first guide vane; and a second auxiliary guide vane contacting the second guide vane and extending continuously along a spiral direction, wherein the first auxiliary guide vane and the second guide vane are a combination of the fine dust separation member and the auxiliary member The overlapping structure is overlapping each other along the direction. According to the overlap structure, a high-speed swirling flow can be formed, and the separation performance of the dust collector can be improved.

The fine dust separation member includes support parts for forming a step along the outer peripheral surfaces of the vortex finders, the fine dust separation member includes support parts for forming a step along the outer peripheral surfaces of the vortex finders, and the cover parts support the support Each has a shape corresponding to the support parts so as to be seated on the parts. By this structure, the fine dust member and the auxiliary member may be coupled.

The fine dust separation member is formed to be thicker than the auxiliary member. The thickness of the fine dust separation member and the auxiliary member affects the separation performance and efficiency of the dust collector. The auxiliary member functions to assist the fine dust separation member, and when the auxiliary member is formed excessively thick, efficiency degradation due to pressure loss is induced. Therefore, the auxiliary member is formed thinner than the fine dust separation member. On the other hand, the fine dust separation member plays a main function of separating fine dust from the air and is thicker than the auxiliary member for high separation performance.

The set of axial flow cyclones may be divided into first axial flow cyclones and second axial flow cyclones according to positions. The first axial flow cyclone is disposed centrally, and the second axial flow cyclones are disposed radially about the first axial flow cyclone. Since the first axial flow cyclone is disposed in the center, it is provided in a single number, and since the second axial flow cyclones are radially disposed, it is provided in plurality. The auxiliary member includes an auxiliary outer band portion having a shape corresponding to the outer band portion to be seated on an upper portion of the outer band portion. The auxiliary outer band portion is for forming the auxiliary member as a single member (or an integral member), and the outer band portion and the auxiliary outer auxiliary band portion together with the casings form an outer wall of the secondary cyclone.

The dust collector of the present invention may constitute an extended embodiment from the first and second embodiments. The primary cyclone part of the dust collector is formed by an outer case, an inner case, and a mesh filter. The outer case forms the exterior of the dust collector and forms the outer wall of the primary cyclone unit. The inner case is disposed inside the outer case, and forms an inner wall of the primary cyclone unit. Since the secondary cyclone unit is disposed inside the inner case, the inner case forms a boundary between the primary cyclone unit and the secondary cyclone unit. The mesh filter is installed to cover the openings of the inner case, and the mesh filter also forms a boundary between the primary cyclone part and the secondary cyclone part.

The inner case may be made of a single member, or may be made of at least two or more members. When the inner case consists of two members, the first member includes a side boundary portion formed to surround at least a portion of the secondary cyclone portion, an upper boundary portion extending in the circumferential direction from the upper end of the side boundary portion toward the inner circumferential surface of the outer case, the first member It includes a skirt portion extending in the circumferential direction toward the inner circumferential surface of the outer case from the lower end of the skirt portion, a plate portion formed inside the skirt portion, and connecting portions connecting between the side boundary portion and the skirt portion.

The second member may include a accommodating part configured to receive fine dust outlets of the axial flow cyclones, and a dust collecting part boundary forming a boundary between the first dust collecting part and the second dust collecting part.

The mesh filter is coupled to the opening formed between the side boundary portion and the skirt portion, and is formed in a mesh or porous form. The standard of weight for classifying dust and fine dust is determined by the separation performance of the primary and secondary cyclones, and the criterion of size may be determined by the mesh filter.

The secondary cyclone unit may be formed by the set of axial flow cyclones described above. The axial flow cyclones may be disposed inside the primary cyclone unit, or may be radially arranged along the outer circumferential surface of the primary cyclone unit.

The dust collecting device includes a first dust collecting unit configured to collect dust separated by the primary cyclone unit and a second dust collecting unit configured to collect fine dust separated by the secondary cyclone unit.

The first dust collecting unit may be defined and formed by a partition unit and a receiving unit forming an upper wall, an outer case forming an outer wall, a dust collecting unit boundary forming an inner wall, and a lower cover forming a bottom. The compartment is formed along the inner circumferential surface of the outer case, and an upper side of the compartment is divided into a primary cyclone unit and a lower side of the compartment is a first dust collecting unit based on the compartment.

A pressure unit is installed in the first dust collecting unit to compress the dust collected in the first dust collecting unit. The pressing unit includes a rotation shaft, a pressing member, a fixing part, a first driven gear, a power transmission rotation shaft, and a second driven gear. The driving force generated from the driving motor of the cleaner body is transmitted to the first driven gear of the dust collector through the main gear of the cleaner body, and again sequentially transmitted to the rotation shaft through the power transmission rotary shaft and the second driven gear. As the rotating shaft rotates, the pressing member also rotates to compress the dust.

The second dust collecting unit is defined by a dust collecting unit boundary forming a sidewall and a lower cover forming a bottom. A pressurizing unit may be installed in the second dust collecting unit according to design, and the pressurizing unit installed in the second dust collecting unit may be configured to share a driving force with the pressurizing unit installed in the first dust collecting unit.

According to the present invention having the above configuration, the vortex finders, the band parts, and the guide vanes are integrally formed as a member (fine dust separation member), and since the axial flow cyclones are formed by combining the casings and the integral member, each cyclone It is possible to solve the problems of performance degradation and process cumbersome due to separation production.

In addition, the present invention, since the band portion of the integral member and the guide vane are connected, it is possible to solve the problem of deterioration in separation performance caused by the gap. Similarly, the problem of deterioration in separation performance caused by the gap between the guide vanes can be solved through the overlapping structure of the two integral members, the fine dust separation member and the auxiliary member.

In addition, the present invention provides (1) a coupling structure of a fine dust separation member to an inner case implemented by a positioning protrusion and a positioning groove (2) a coupling structure of a fine dust separation member and an auxiliary member implemented by a vortex finder and a cover part. This enables easy disassembly and assembly of the dust collector.

Also, according to the present invention, it is possible to improve the efficiency of the dust collector using the fine dust separation member and to improve the separation performance of the dust collector using the auxiliary member.

1 is a perspective view showing an example of a vacuum cleaner according to the present invention.
2 is a conceptual diagram of a dust collector according to a first embodiment of the present invention.
3 is an exploded perspective view of the dust collector shown in FIG. 2 .
4 is a longitudinal cross-sectional view of the dust collector of FIG. 2 taken along line AA.
5 is a perspective view of the fine dust separation member shown in FIGS. 3 and 4 .
6 is an exploded perspective view of a dust collector according to a second embodiment of the present invention.
7 is a perspective view of the fine dust separation member and the auxiliary member shown in FIG. 6 .
8 is a conceptual view partially illustrating a coupling state of the fine dust separation member and the auxiliary member shown in FIG. 6 .
9 is a plan view of the fine dust separation member and the auxiliary member shown in FIG. 6 .

1 is a perspective view showing an example of a vacuum cleaner 10 according to the present invention.

The cleaner body 11 and the dust collector 100 form the exterior of the vacuum cleaner 10 . Wheels 12 are installed on both sides of the cleaner body 11 to implement the slide movement of the cleaner body 11 . A suction motor (not shown) and a suction fan (not shown) rotating by the suction motor to generate suction force are installed inside the cleaner body 11 .

Although not shown, the vacuum cleaner 10 further includes a suction nozzle (not shown) for sucking air containing foreign substances and a connection member (not shown) connecting the suction nozzle to the cleaner body 11 . In the present invention, since the basic configuration of the suction nozzle and the connection member is the same as that of the prior art, a description thereof will be omitted.

A suction part 13 for sucking the air sucked in through the suction nozzle and foreign substances contained in the air is formed at the front lower end of the cleaner body 11 . Air and foreign substances are introduced into the suction unit 13 by the operation of the suction motor and the suction fan. The air and foreign substances introduced into the suction unit 13 are introduced into the dust collector 100 through the inlet side cleaner inner flow path 14 and the inlet 111 of the dust collector 100, and in the dust collector 100 separated from each other And the air separated from the foreign material exits the dust collector 100 through the outlet 141 of the dust collector 100 and the outlet-side cleaner inner flow passage 15 .

For reference, in this specification, foreign substances contained in air are classified into dust, fine dust, and ultrafine dust. Relatively large dust is referred to as “dust”, relatively small dust is referred to as “fine dust”, and dust smaller than “fine dust” is referred to as “ultra-fine dust”.

The dust collector 100 is configured to be detachably attached to the cleaner body 11 . The dust collector 100 separates and collects foreign substances from the sucked air, and discharges the air separated from the foreign substances.

Openings may be formed at the lower end and upper end of the outer case 110 , respectively. The lower cover 130 is coupled to the lower end of the outer case 110 , and the upper cover 140 is coupled to the upper end thereof.

The lower cover 130 is installed to open and close the lower opening of the outer case 110 . The lower cover 130 may be detachably installed on the outer case 110 .

The upper cover 140 is installed to open and close the upper opening of the outer case 110 . The upper cover 140 may also be detachably installed on the outer case 110 . A handle 142 is rotatably installed on the upper cover 140 . After separating the dust collector 100 from the main body 11 of the cleaner, the user may rotate the handle 142 and hold the dust collector 100 in his/her hand.

Hereinafter, the dust collectors 100 and 200 of the present invention will be described in detail.

Although the dust collectors 100 and 200 to be described below show the dust collectors 100 and 200 applied to the canister-type vacuum cleaner 10, the dust collectors 100 and 200 of the present invention are necessarily canister-type vacuum cleaners. It is not limited only to (10). The dust collectors 100 and 200 of the present invention may also be applied to the upright type vacuum cleaner 10 .

I. first embodiment

2 is a conceptual diagram of a dust collector 100 according to a first embodiment of the present invention. 3 is an exploded perspective view of the dust collector 100 shown in FIG. 2 . 4 is a longitudinal cross-sectional view of the dust collector 100 of FIG. 2 cut along the line A-A.

1. Appearance of dust collector 100

The exterior of the dust collector 100 includes an outer case 110 , a lower cover 130 , and an upper cover 140 .

(1) Outer case (110)

The outer case 110 forms a side appearance of the dust collector 100 . The outer case 110 forms the outer wall of the primary cyclone unit 101, and the outer case 110 is formed in a cylindrical shape to form a swirling flow of the primary cyclone unit 101 as shown in FIG. it is preferable However, unlike the inner circumferential surface of the outer case 110 , the outer circumferential surface does not have to be formed in a cylindrical shape.

An inlet 111 of the dust collector 100 is formed in the outer case 110 . The air and foreign substances introduced through the suction unit 13 described in FIG. 1 flow along the flow path inside the cleaner body 11 , and the inside of the outer case 110 of the dust collector 100 through the inlet 111 . is introduced into

The inlet 111 may be formed along a tangential direction of the outer case 110 , and may be formed to extend toward the inner periphery of the outer case 110 . The reason that the inlet 111 has such a structure is to generate a swirling motion of air and foreign substances. Air and foreign substances introduced into the outer case 110 along the tangential direction through the inlet 111 rotate along the inside of the outer case 110 .

The inlet 111 may protrude from the outer case 110 to be connected to the flow path inside the cleaner body 11 . If the flow path inside the cleaner body 11 has a shape corresponding to the outer circumferential surface of the outer case 110 , the inlet 111 may have a structure in which it does not protrude from the outer case 110 .

Openings may be formed at the lower end and upper end of the outer case 110 , respectively. The lower cover 130 is coupled to the lower end of the outer case 110 , and the upper cover 140 is coupled to the upper end thereof.

(2) lower cover 130

The lower cover 130 forms the bottom of the dust collector 100 . The circumference of the lower cover 130 is formed to correspond to the circumference of the outer case 110 , and the lower cover 130 is formed to cover the lower opening of the outer case 110 .

The lower cover 130 is rotatably coupled to the outer case 110 to open and close the lower opening of the outer case 110 . In this embodiment, the lower cover 130 is hinged to the outer case 110 , 115 , 131 is shown to be configured to open and close the lower opening of the outer case 110 according to the rotation. However, the present invention is not limited thereto, and the lower cover 130 may be completely detachably coupled to the outer case 110 .

The lower cover 130 maintains a state coupled to the outer case 110 through the hook coupling portion 132 . The hook coupling part 132 is formed on the opposite side of the hinge 131 with respect to the center of the lower cover 130 . The hook coupling part 132 is made to be insertable into the groove 116 formed on the outer circumferential surface of the outer case 110 , and in order for the lower cover 130 to rotate by the hinge 131 , the hook coupling part 132 is external. It should be drawn out from the groove 116 of the case 110 .

A first dust collecting part 103 and a second dust collecting part 104 to be described later are formed inside the dust collecting device 100 , and the lower cover 130 is a bottom surface of the first dust collecting part 103 and the second dust collecting part 104 . is configured to form Accordingly, the lower cover 130 may be rotated by the hinge 131 to simultaneously open the first dust collecting part 103 and the second dust collecting part 104 . When the lower cover 130 is rotated by the hinge 131 to open the first dust collecting part 103 and the second dust collecting part 104 at the same time, dust and fine dust may be discharged at the same time. Accordingly, since dust and fine dust are simultaneously discharged only by a one-time operation of opening the lower cover 130 , the convenience of users such as the dust collector 100 or the vacuum cleaner 10 can be improved.

A sealing member 133 may be coupled to the circumference of the lower cover 130 . The sealing member 133 may be formed in a ring shape surrounding the periphery of the lower cover 130 , and seal between the outer cases 110 to prevent leakage of dust or fine dust collected inside the dust collector 100 . made to do

(3) top cover (140)

The upper cover 140 is formed to cover the upper opening of the outer case 110 , and is coupled to the upper portion of the outer case 110 . The circumference of the upper cover 140 is formed to correspond to the circumference of the outer case 110 .

The upper cover 140 is disposed to face the cover member 150 disposed inside the outer case 110 . The upper cover 140 is spaced apart from the cover member 150 to form a discharge passage for discharging the air discharged from the secondary cyclone unit 102 to the outside of the dust collector 100 . An outlet 141 of the dust collector 100 is formed in the upper cover 140 , and air is discharged through the outlet 141 .

Air discharged through the outlet 141 of the dust collector 100 may be discharged to the outside through an exhaust port (not shown) of the cleaner body 11 . A porous filter (not shown) configured to filter ultrafine dust from air may be installed in a flow path from the outlet 141 of the dust collector 100 to the exhaust port of the cleaner body 11 .

A handle 142 may be rotatably coupled to the upper cover 140 . The handle 142 may be formed along the outer periphery of the upper cover 140 . For example, as shown in the drawings, the handle 142 may be formed in a semicircular or arcuate shape along the outer periphery of the upper cover 140 . When the user wants to separate the dust collector 100 from the cleaner main body 11 , after releasing the coupling between the cleaner main body 11 and the dust collecting apparatus 100 , the handle 142 is rotated and lifted.

2. Internal configuration of dust collector 100

(1) Primary Cyclone Unit (101)

A cyclone refers to a device that forms a swirling flow in air and foreign substances and separates foreign substances from air by centrifugal force. Foreign substances include dust, fine dust, and ultrafine dust. Since the weight of the air and the weight of the foreign material are different from each other, the radius of rotation of the air and the radius of rotation of the foreign material due to the centrifugal force are different from each other. The cyclone uses the difference in radius of rotation due to centrifugal force to separate foreign substances such as dust and fine dust from the air.

The primary cyclone unit 101 is formed inside the outer case 110 and is formed to separate dust from the air introduced from the outside. The primary cyclone unit 101 is formed by an outer case 110 , inner cases 121 and 122 , and a mesh filter 127 .

1) Outer case (110)

The inner circumferential surface of the outer case 110 forms an outer wall of the primary cyclone unit 101 . Heavy dust compared to air and fine dust rotates in a swirling flow with a larger radius of rotation than air or fine dust. Since dust rotates within a region defined by the inner circumferential surface of the outer case 110 , the maximum rotation radius of the dust is defined by the inner circumferential surface of the outer case 110 .

2) Inner case (121, 122)

The inner cases 121 and 122 are installed inside the outer case 110 and may have a partially cylindrical shape. The primary cyclone unit 101 is formed on the outside of the inner case (121, 122), the secondary cyclone unit 102 is formed inside the inner case (121, 122), so the inner case (121, 122) A boundary between the primary cyclone unit 101 and the secondary cyclone unit 102 is formed. The inner cases 121 and 122 are disposed directly under the cover member 150 , and the cover member 150 is disposed to cover the opened upper ends of the inner cases 121 and 122 .

The inner cases 121 and 122 may be formed by coupling the first member 121 and the second member 122, or may be formed of only one member. Hereinafter, description will be made based on the case in which the inner cases 121 and 122 are formed by the coupling of the first member 121 and the second member 122, but the present invention is not limited thereto.

The first member 121 includes a side boundary portion 121a, an upper boundary portion 121b, a skirt portion 121d, a plate portion 121e, and connection portions 121f. The second member 122 will be described later in the items related to the first dust collecting unit 103 and the second dust collecting unit 104 .

The side boundary portion 121a is formed to surround at least a portion of the secondary cyclone unit 102 , and has an open ring shape to receive the axial flow cyclones 102a and 102b of the secondary cyclone unit 102 . The side boundary portion 121a corresponds to the side boundary between the primary cyclone unit 101 and the secondary cyclone unit 102 .

The upper boundary portion 121b extends from the upper end of the side boundary portion 121a in the circumferential direction toward the inner peripheral surface of the outer case 110 . The upper boundary portion 121b is in contact with the inner circumferential surface of the outer case 110 along the circumferential direction to form an upper boundary of the primary cyclone portion 101 . A sealing member (not shown) may be coupled to the circumference of the upper boundary portion 121b. The sealing member may be formed in a ring shape surrounding the circumference of the upper boundary portion 121b, and seals between the inner circumferential surface of the outer case 110 and the upper boundary portion 121b to prevent leakage of dust.

A protrusion 121c facing the cover member is formed on the upper boundary portion 121b. The protrusion 121c is formed to be insertable into the groove 152 of the cover member, and the positions of the protrusion 121c and the groove 152 may be interchanged. As the protrusion 121c of the upper boundary portion 121b is inserted into the groove 152 of the cover member 150 , a relative position between the first member 121 and the cover member 150 may be set.

The skirt portion 121d extends from the lower end of the first member 121 in the circumferential direction toward the inner circumferential surface of the outer case 110 . The skirt portion 121d is to prevent the dust separated from the air by the primary cyclone portion 101 from scattering.

Unlike the upper boundary portion 121b, the skirt portion 121d is spaced apart from the inner circumferential surface of the outer case 110 . As the skirt portion 121d is spaced apart from the inner circumferential surface of the outer case 110 , an annular passage is formed between the inner circumferential surface of the outer case 110 and the skirt portion 121d. The dust separated from the air by the primary cyclone unit 101 moves to the first dust collecting unit 103 along this passage.

The plate part 121e is formed inside the skirt part 121d. The plate portion 121e is formed with a through hole 121i for accommodating the lower ends of the axial flow cyclones 102a and 102b (more specifically, lower ends of the casings 125 to be described later). The plate part 121e is for preventing the fine dust discharged from the fine dust outlet 141 of the axial flow cyclones 102a and 102b from flowing back into the secondary cyclone unit 102 . The plate portion 121e and the skirt portion 121d may be formed at substantially the same height, but are not limited thereto.

One end of the connection parts 121f is connected to the side boundary part 121a, and the other end is connected to the skirt part 121d or the plate part 121e. The other end of the connection parts 121f may be disposed at a boundary between the skirt part 121d and the plate part 121e. The connection parts 121f are disposed to be spaced apart from each other along the outer periphery of the first member 121 .

The side boundary portion 121a and the connecting portions 121f may be formed to be inclined to become narrower toward the bottom. This is to induce the fall of the dust separated from the air by the primary cyclone unit 101 . If the side boundary portion 121a and the connecting portions 121f are formed along the vertical direction, they may act as obstacles in the dust falling process. However, as shown in the drawings, when the side boundary portion 121a and the connecting portions 121f are formed to be inclined, they do not act as obstacles in the dust falling process, so that the dust can be induced to fall smoothly. The mesh filter 127 may also be formed to be inclined for the same reason.

3) Mesh Filter(127)

As the connection parts 121f are spaced apart from each other, openings 123 are formed in the area defined by the side boundary part 121a, the connection parts 121f, and the skirt part 121d (or the plate part 121e). do. The mesh filter 127 is installed on the first member 121 to cover the openings 123 . The mesh filter 127 may be provided singly or in plurality.

The mesh filter 127 has a mesh or porous shape to separate dust from the air introduced into the inner cases 121 and 122 . The size criterion for classifying dust and fine dust may be determined by the mesh filter 127 . A foreign material having a size that passes through the mesh filter 127 may be classified as fine dust, and a foreign material having a size that does not pass through the mesh filter 127 may be classified as dust.

(2) the first dust collecting unit (103)

1) Configuration of the first dust collecting unit 103

The first dust collecting unit 103 is formed to collect dust separated from the air by the primary cyclone unit 101 . The first dust collecting unit 103 indicates a space defined by the partition unit 112 , the outer case 110 , the inner cases 121 and 122 , and the lower cover 130 .

A partition 112 dividing the upper part and the lower part of the outer case 110 is formed on the inner side of the outer case 110 along the inner peripheral surface of the outer case 110 . The partition 112 may be integrally formed with the outer case 110 .

The partition 112 forms an upper wall of the first dust collecting part 103 . The partition 112 extends along the inner circumferential surface of the outer case 110 , but the opening 113 is formed so that the dust separated from the air by the primary cyclone unit 101 flows into the first dust collecting unit 103 .

An upper portion of the outer case 110 with respect to the partition 112 forms an outer wall of the above-described primary cyclone, and a lower portion of the outer case 110 forms an outer wall of the first dust collecting unit 103 . The outer wall of the first dust collecting part 103 formed by the lower part of the outer case 110 corresponds to the side wall of the first dust collecting part 103 .

The second member 122 of the inner cases 121 and 122 is disposed under the first member 121 , and includes an accommodating part 122a and a dust collecting part boundary 122b.

The receiving portion 122a is configured to receive the fine dust outlet 141 of the axial flow cyclones 102a and 102b. The upper end of the accommodating part 122a is opened, and the plate part 121e of the first member 121 is disposed to cover the opened upper end of the accommodating part 122a. The receiving portion 122a is disposed on the pressing unit 160 to be described later. The accommodating part 122a may also be inclined like the side boundary part 121a or the connecting part 121f of the first member 121 .

The lower surface of the accommodating part 122a forms an upper wall of the first dust collecting part 103 together with the partition part 112 . The partitioning part 112 extends along the outer peripheral surface of the receiving part 122a, and the partitioning part 112 and the outer peripheral surface of the receiving part 122a are in close contact with each other.

The dust collecting unit boundary 122b is formed in a hollow cylindrical or hollow polygonal column shape, and extends from one side of the receiving portion 122a toward the lower cover 130 . The pressing unit 160 to be described later has a rotating shaft 161 disposed under the receiving part 122a, and the dust collecting part boundary 122b may be disposed side by side on one side of the rotating shaft 161. The rotation shaft 161 may be disposed at the center of the lower cover 130 , and the dust collecting unit boundary 122b may be disposed eccentrically from the center of the lower cover 130 .

The outer peripheral surface of the dust collecting unit boundary 122b forms an inner wall of the first dust collecting unit 103 . Also, the lower cover 130 forms the bottom of the first dust collecting part 103 . Accordingly, the first dust collecting unit 103 includes a partition 112 and a receiving unit 122a forming an upper wall, an outer case 110 forming an outer wall, a dust collecting unit boundary 122b forming an inner wall, and a floor forming It may be defined and formed by the lower cover 130 .

An inner wall 114 may be formed in the first dust collecting part 103 . The inner wall 114 may be integrally formed with the outer case 110 or may be integrally formed with the second member 122 of the inner cases 121 and 122 . The inner wall 114 extends in the longitudinal direction to separate the left and right sides of the first dust collecting part 103 . One side of the inner wall 114 is connected to the outer case 110 , and the other side of the inner wall 114 is connected to the dust collecting unit boundary 122b of the second member 122 . An upper end of the inner wall 114 may be connected to the partition 112 , and a lower end of the inner wall 114 may be in contact with the lower cover 130 .

The first dust collecting part 103 is formed to open toward the lower part of the dust collecting device 100 . The configuration in which the first dust collecting part 103 and the second dust collecting part 104 are simultaneously opened by the rotation of the lower cover 130 is replaced with the one described above.

2) pressurization unit (160)

If the dust collected in the first dust collecting unit 103 is dispersed rather than collected in one place, there is a possibility that the dust may be scattered or discharged to an unintended place in the process of discharging the dust. In addition, if the dust collected in the first dust collecting unit 103 is not gathered in one place, it may be difficult to sufficiently secure a dust collecting space. In order to overcome this problem, the present invention is configured to pressurize the dust collected in the first dust collecting unit 103 using the pressurizing unit 160 to reduce the volume.

The pressurizing unit 160 rotates in both directions within the first dust collecting unit 103 to compress the dust collected. The pressing unit 160 includes a rotation shaft 161 , a pressing member 162 , a fixing part 163 , a first driven gear 164 , a power transmission rotation shaft 165 , and a second driven gear 166 .

The rotating shaft 161 is disposed below the receiving portion 122a of the second member 122 . The rotating shaft 161 is configured to be rotatable by receiving power from the driving motor of the cleaner body 11 . The rotating shaft 161 is made to reciprocate in a clockwise or counterclockwise direction, that is, in both directions.

An upper portion of the rotating shaft 161 may be supported by a lower portion of the receiving portion 122a, and a lower portion of the rotating shaft 161 may be supported by a fixing unit 163 .

A groove 161a recessed inward of the center of the rotation shaft 161 is formed in the upper portion of the rotation shaft 161 . And a protrusion 122d inserted into the groove 161a is formed in a lower portion of the receiving portion 122a to protrude. The projection 122d is inserted into the groove 161a to support the rotation shaft 161, and accordingly, the projection 122d and the rotation shaft 161 are formed to be relatively rotatable. According to this structure, when the rotation shaft 161 is rotated, the projection 122d holds the rotation center of the rotation shaft 161 . Accordingly, the rotation of the rotation shaft 161 can be made more stably.

The fixing unit 163 is rotatably coupled to the rotation shaft 161 and is fixed to the dust collecting unit boundary 122b of the inner cases 121 and 122 . Since the fixing part 163 is connected to the inner cases 121 and 122 , even if the lower cover 130 is rotated by the hinge 131 and the first dust collecting part 103 is opened, the pressing member 162 and the rotating shaft 161 ) can be fixed in place.

The pressing member 162 is connected to the rotation shaft 161 and is configured to rotate in the first dust collecting unit 103 according to the rotation of the rotation shaft 161 . The pressing member 162 may be formed in a plate shape. The dust collected in the first dust collecting unit 103 is moved to one side of the first dust collecting unit 103 by the rotation of the pressing member 162 to be collected, and when a lot of dust is accumulated, the dust is pressed by the pressing member 162 and compressed.

The first driven gear 164 , the power transmission rotation shaft 165 , and the second driven gear 166 receive a driving force provided from a driving motor (not shown) of the cleaner body 11 and are formed to be transmitted to the rotating shaft 161 . do. The drive motor is distinct from the suction motor described above.

The first driven gear 164 is disposed on the outside of the lower cover 130 and exposed to the outside of the dust collector 100 . A main driven gear (not shown) corresponding to the first driven gear 164 is installed in the cleaner body 11 , and when the dust collector 100 is coupled to the cleaner body 11 , the first driven gear 164 is the main driven gear ( 164 ). gear and mesh with each other. The main gear is configured to be rotated by a drive motor. Accordingly, the driving force generated by the operation of the driving motor is also transmitted to the first driven gear 164 through the main driving gear.

The power transmission rotation shaft 165 passes through the lower cover 130 and is respectively connected to the first driven gear 164 and the second driven gear 166 . The power transmission rotation shaft 165 is made to be rotatable relative to the lower cover 130 .

The second driven gear 166 is connected to the power transmission rotation shaft 165 and is formed to transmit a driving force to the rotation shaft 161 . A groove formed to accommodate the second driven gear 166 is formed at the lower end of the rotation shaft 161 , and a gear structure formed to mesh with the second driven gear 166 is provided around the groove. The rotation shaft 161 and the second driven gear 166 are coupled and separated from each other according to the opening and closing of the lower cover 130 so as not to interfere with the opening of the first dust collecting part 103 and the second dust collecting part 104 .

The structure for transmitting the driving force of the driving unit to the rotating shaft 161 may be changed according to a design change. For example, the rotation shaft 161 may be disposed to pass through the lower cover 130 and may be configured to be directly coupled to the main driving gear.

Regardless of the structure, the lower end of the pressurizing unit 160 should be rotatable relative to the lower cover 130 . A portion of the lower cover 130 that is relatively rotated may include a sealing member for sealing the space therebetween.

When the driving motor operates in a state in which the dust collector 100 is coupled to the cleaner body 11 , a driving force is generated, and the main gear is rotated by the driving force generated by the driving motor.

The driving force transmitted to the driving gear of the cleaner body 11 is transmitted to the pressing unit 160 . The first driven gear 164 is rotated by meshing with the main driven gear, and the second driven gear 166 connected to the first driven gear 164 by the power transmission rotation shaft 165 also follows the first driven gear 164 . will rotate And the rotating shaft 161 made to rotate together with the second driven gear 166 also rotates along the second driven gear 166, and the pressing member 162 connected to the rotating shaft 161 also rotates with the rotating shaft 161 to make the first The dust collected in the first dust collecting unit 103 is pressurized and compressed.

In this case, the rotation of the driving motor may be controlled to rotate the pressing member 162 in both directions. For example, when a repulsive force is applied in a direction opposite to the direction of rotation, the driving motor may be configured to rotate in the opposite direction. That is, when the pressing member 162 rotates in one direction to compress the dust collected on one side to a certain level, the driving motor rotates in the other direction to compress the dust collected on the other side. The dust collector 100 and the cleaner may be designed so that a repulsive force is generated when the pressing member 162 approaches the inner wall 114 or touches the inner wall 114 to be described later.

When the dust is not sufficiently collected in the first dust collecting part 103, the pressing member 162 collides with the inner wall 114 and receives a repulsive force corresponding thereto, or a stopper structure provided on the rotation path of the pressing member 162 ( Not shown) by receiving a repulsive force, it may be configured to rotate in the opposite direction.

Alternatively, the control unit in the cleaner body 11 may apply a control signal to the driving motor to change the rotation direction of the pressing member 162 at regular intervals so that the bidirectional rotation of the pressing member 162 may occur repeatedly. .

An inner wall 114 for collecting dust moved to one side by the rotation of the pressing member 162 may be provided in the first dust collecting unit 103 . In this embodiment, it is shown that the inner wall 114 is disposed on the opposite side of the rotation shaft 161 with the dust collecting part boundary 122b of the second member 122 interposed therebetween. According to this, the dust introduced into the first dust collecting unit 103 is collected on both sides of the inner wall 114 by the rotation of the pressing member 162 .

According to the pressurization unit 160, it is possible to suppress the dust scattering in the process of throwing away the dust, and it is possible to significantly reduce the possibility of being discharged to an unintended place.

(3) secondary cyclone unit (102)

After the dust is separated from the air by the primary cyclone unit 101 , air and fine dust are introduced into the secondary cyclone unit 102 along the flow path. The secondary cyclone unit 102 is formed to separate fine dust from the air introduced from the primary cyclone unit 101 .

The secondary cyclone unit 102 consists of a set of axial flow cyclones 102a and 102b that are formed to separate fine dust from the air introduced in the axial direction. The set of axial flow cyclones 102a and 102b includes casings 125 and a fine dust separation member 170 .

1) Casings (125)

Each casing 125 forms outer walls around the hollow portion 125a. The outer walls around the hollow portion 125a formed by the casings 125 correspond to the outer walls of the respective axial flow cyclones 102a and 102b. A swirling flow of air and fine dust is formed between the vortex finder 171 and the casing 125, which will be described later.

Fine dust heavier than air rotates with a larger radius of rotation than air in the swirling flow. Since the fine dust rotates within the area defined by the casing 125 , the maximum rotation radius of the fine dust is defined by each of the casings 125 .

The lower portion of the casing 125 may have an inclined shape to become narrower downward. The reason that the lower portion of the casing 125 has a narrower downward shape is to induce the fall of the fine dust separated from the air and prevent the fine dust from being discharged to the vortex finder 171 along the air.

Lower portions of the casings 125 are supported by the plate portion 121e of the first member 121 . Through-holes 121i are formed in the plate portion 121e at positions facing the casings 125 , and lower portions of each of the casings 125 are inserted into the respective through-holes 121i. Since the lower portion of the casing 125 has an inclined shape so as to become narrower downward, the casing 125 is formed by the plate portion 121e at a position where the outer circumferential surface of the casing 125 and the size of the through hole 121i are the same as each other. can be supported

The upper portion of the casing 125 is formed to accommodate the vortex finder 171 of the fine dust separation member 170 to be described later. The upper portion of the casing 125 may be formed to have a constant inner diameter. An upper portion and a lower portion of the casing 125 may be divided based on a position where the inner diameter is narrowed.

A fine dust outlet 125b is formed at the lower end of the casing 125 . The fine dust separated from the air is discharged from the axial flow cyclones 102a and 102b through the fine dust outlet 125b.

The casing 125 has as many as the number of axial flow cyclones 102a, 102b. Since the set of axial flow cyclones 102a and 102b is formed by the casings 125 and the fine dust separation member 170, the number of axial flow cyclones 102a and 102b and the number of casings 125 are same. The number of vortex finders 171 and band portions 172, which will be described later, is the same as the number of axial flow cyclones 102a and 102b, respectively, for the same reason.

The casings 125 may be disposed inside the inner casings 121 and 122 . Referring to the drawings, it can be seen that the casings 125 are disposed inside the first member 121 . Any one of the casings 125 may be disposed at the center, and the others may be disposed radially with respect to the center. For classification purposes, those disposed at the center may be referred to as first casings, and those disposed radially with respect to the first casing may be referred to as second casings.

The outer circumferential surface of each casing 125 is connected to be in contact with the surrounding casings 125 , and the casings 125 may form a single member. The cross section of each casing 125 preferably has a circular shape as shown in the drawing. This is because when the cross section of the casing 125 is formed in a circular shape, even if the outer peripheral surfaces of the adjacent casings 125 are in close contact with each other, a flow path of air and fine dust can be formed therebetween. When a flow path of air and fine dust is formed between the casings 125 , there is an advantage that a separate flow path structure does not need to be installed.

It is not excluded that the cross-section of each casing 125 is formed in a polygonal shape. However, even if the cross section of each casing 125 is formed in a polygonal shape, it is preferable to have a polygonal shape in which a flow path for air and fine dust can be formed.

2) Fine dust separation member 170

The fine dust separation member 170 is disposed on the casings 125 to form a set of axial flow cyclones 102a and 102b together with the casings 125 . The casings 125 form a part of the set, and the fine dust separation member 170 forms the remaining part of the set.

The present invention is characterized in that a set of axial flow cyclones 102a and 102b is formed by the casings 125 and one fine dust separation member 170 . Hereinafter, the structure of the fine dust separation member 170 will be described with reference to FIGS. 3 to 5 .

5 is a perspective view of the fine dust separation member 170 shown in FIGS. 3 and 4 .

The fine dust separation member 170 includes vortex finders 171 , band parts 172 , guide vanes 173 , and an outer band part 174 . Since the fine dust separation member 170 is a single integral member, the vortex finders 171, band portions 172, guide vanes and outer band portions 174 are It means each part of the fine dust separation member 170 . However, depending on the design, the fine dust separation member 170 may not include the outer band portion 174 . The vortex finder 171 , the band part 172 , and the guide vane 173 are all provided in plurality in one fine dust separation member 170 , but the outer band part 174 is provided in a single number.

a. vortex finders (171)

The vortex finder 171 is configured to discharge air separated from fine dust. Each of the vortex finders 171 is disposed inside each of the casings 125 , and an outer peripheral surface of each of the vortex finders 171 is spaced apart from the inner peripheral surface of each of the casings 125 . Each of the vortex finders 171 has a structure that forms an outer wall around the hollow portion 171a, and air is discharged into the hollow portion 171a of each of the vortex finders 171 .

The upper and lower portions of the vortex finder 171 have a higher height than the band portion 172 or the outer band portion 174 . It can be seen from the drawing that the upper and lower ends of the vortex finders 171 protrude above and below the fine dust separation member 170, respectively.

Referring to FIG. 4 , the lower portion of the vortex finder 171 may have an inclined shape such that it becomes narrower downward. The reason that the lower portion of the vortex finder 171 has a narrower downward shape is to prevent fine dust from being discharged to the vortex finder 171 along with the air.

Also referring to FIG. 4 , the upper portion of the vortex finder 171 is formed to have a constant inner diameter. An upper portion and a lower portion of the vortex finder 171 may be divided based on a position where the inner diameter is narrowed.

Any one of the vortex finders 171 may be disposed at the center, and the others may be disposed radially with respect to the center. For classification purposes, those disposed at the center may be referred to as first vortex finders, and those disposed radially with respect to the first vortex finder may be referred to as second vortex finders.

The vortex finders 171 are provided as many as the number of axial flow cyclones 102a and 102b. As described above, since the set of axial flow cyclones 102a and 102b is formed by the casings 125 and the fine dust separation member 170, the number of axial flow cyclones 102a, 102b and the vortex finders The number of (171) is the same.

b. band portions (172)

The band portion 172 is formed to surround the outer circumferential surface of the vortex finder 171 at a position spaced apart from the vortex finder 171 . As the band portion 172 and the vortex finder 171 are spaced apart from each other, an inlet of each of the axial flow cyclones 102a and 102b is formed therebetween. Air and fine dust are introduced into the inlets of the axial flow cyclones 102a and 102b along the axial direction.

The band unit 172 may be named by another name as necessary. For example, a ring portion, a ring portion, a rim portion, a perimeter portion, a circle portion (circle portion), a support portion, a connection portion, an outer portion, a cyclone boundary portion, the name of the outer wall portion, etc. can be considered, and other names are possible.

The band portions 172 are seated on the casings 125 and have a shape corresponding to the upper portions of the casings 125 to form outer walls of the respective axial flow cyclones 102a and 102b together with the casings 125 . . Referring to FIG. 3 , it can be seen that the upper portion of the casing 125 is formed in a circular shape, and the band portion 172 is also formed in a circular shape surrounding the vortex finder 171 . However, it is not excluded that the upper portion of the casing 125 and the band portion 172 are formed in a polygonal shape.

The fine dust separation member 170 and the casings 125 are configured to set a coupling position and prevent arbitrary relative rotation by a position fixing groove (not shown) and a position fixing protrusion (not shown). Since each of the vortex finders 171 is spaced apart from each of the casings 125, arbitrary relative rotation may occur between the fine dust separation member 170 and the casings 125, and the normal operation of the dust collector 100 may be prevented. For this purpose, random relative rotation must be prevented.

The position fixing protrusion is made to be inserted into the position fixing groove, and may be formed in any one of the band portions 172 and the casings 125 . The position fixing groove is made to accommodate the position fixing protrusion, and may be formed in the other one of the band portions 172 and the casings 125 . In addition, a plurality of position fixing grooves and position fixing protrusions may be provided.

When the fine dust separation member 170 is seated on the upper portions of the casings 125 , each of the casings 125 and each of the band portions 172 are molded to each other to form outer walls of each of the axial flow cyclones 102a and 102b. do. For identification purposes, outer walls formed by the casings 125 may be referred to as lower outer walls, and outer walls formed by the band portions 172 may be referred to as upper outer walls.

Any one of the band portions 172 may be disposed at the center, and the rest may be disposed radially with respect to the center. For identification purposes, those disposed in the center may be referred to as first band portions, and those disposed radially based on the first band may be referred to as second band portions.

The first band part and the second band part may be connected to each other. The second band portions may be connected to each other adjacent to each other. The cross section of the band portion 172 preferably has a circular shape as shown in the drawings. This is because when the cross section of the band portion 172 is formed in a circular shape, even if the adjacent band portions 172 are in close contact with each other, a flow path 191 for air and fine dust may be formed therebetween. When the flow path 191 of air and fine dust is formed between the band parts 172, there is an advantage that a separate flow path structure does not need to be installed.

It is not excluded that the cross section of the band portion 172 is formed in a polygonal shape. However, even if the cross section of the band portion 172 is formed in a polygonal shape, it is preferable to have a polygonal shape in which a flow path of air and fine dust can be formed.

Band portions 172 are provided as many as the number of axial flow cyclones (102a, 102b). As described above, since the set of axial flow cyclones 102a and 102b is formed by the casings 125 and the fine dust separation member 170, the number of axial flow cyclones 102a, 102b and the band portions ( 172) is the same.

c. guide vanes (173)

The guide vanes 173 are disposed between each of the vortex finders 171 and each of the band parts 172 and are connected to each of the vortex finders 171 and each of the band parts 172 . One side of each of the guide vanes 173 is connected to the outer circumferential surface of each of the vortex finders 171 , and the other side is connected to the inner circumferential surface of each of the band portions 172 .

A plurality of guide vanes 173 may be provided for each axial flow cyclone 102a, 102b, and the guide vanes 173 extend in a spiral direction to generate a swirling flow. One side of the guide vane 173 may be connected to the outer peripheral surface of the vortex finder 171 along the spiral direction, and the other side may be connected to the inner peripheral surface of the band part 172 along the spiral direction. As the guide vane 173 extends in the spiral direction, air and fine dust introduced into the inlets of each of the axial flow cyclones 102a and 102b form a swirling flow. Unlike the tangential inflow cyclones, the axial flow cyclones 102a and 102b generate a swirling flow by the guide vanes 173, and thus do not require a flow path structure for tangential inflow.

Each of the guide vanes 173 may extend from a lower end of the band unit 172 to an upper end of the band unit 172 in a spiral direction. Extending from the bottom to the top means that the guide vanes 173 have the same height as the band portion 172 . As the guide vanes 173 have the same height as the band portion 172, the possibility of interference with other components and the possibility of damage may be reduced.

d. outer band portion 174

The outer band portion 174 is formed to surround the band portions 172 to form an edge of the fine dust separation member 170 . The outer band portion 174 surrounds the band portions 172 at the periphery of the band portions 172 . Previously, the band portions 172 were divided into a first band portion and a second band portion, and according to this division, the outer band portion 174 is formed to surround the second band portions. The outer band unit 174 may be connected to the second band units.

The outer band portion 174 may also have the same height as the band portions 172 and the guide vanes 173 . As the outer band portion 174 has the same height as the band portions 172 and the guide vanes 173 , the possibility of interference with other components and the possibility of damage may be reduced.

The outer band portion 174 is configured to be seated inside the inner cases 121 and 122 . The first member 121 of the inner cases 121 and 122 is formed to surround the casings 125 and the outer band portion 174, and a step portion (121g) formed along the inner circumferential surface to support the outer band portion 174. to provide The stepped portion 121g has a shape corresponding to the outer band portion 174, and for example, the stepped portion 121g may be formed in a circular shape to correspond to the circular outer band portion 174 as shown in the drawings. The outer band portion 174 may be seated on the step portion 121g inside the first member 121 .

The fine dust separation member 170 and the inner cases 121 and 122 are configured to set a coupling position by the position fixing groove 175 and the position fixing protrusion 121h and to prevent arbitrary relative rotation. Since the vortex finders 171 and the casings 125 are spaced apart, random relative rotation may occur, and for the normal operation of the dust collector 100 , arbitrary relative rotation must be prevented.

The position fixing protrusion 121h is made to be inserted into the position fixing groove 175 and may be formed in any one of the outer band portion 174 and the inner cases 121 and 122 . The position fixing groove 175 is made to accommodate the position fixing protrusion 121h and may be formed in the other one of the outer band portion 174 and the inner casing 125 . If the position fixing groove 175 or the position fixing protrusion 121h is formed in the inner cases 121 and 122 , the position fixing groove 175 or the position fixing protrusion 121h is the inner surface of the inner cases 121 and 122 . Alternatively, it may be formed in the stepped portion 121g. 3 shows a configuration in which the position fixing protrusion 121h is formed on the inner surfaces of the inner cases 121 and 122 . In addition, the position fixing groove 175 and the position fixing protrusion 121h may be provided in plurality.

The outer band portion 174 may be seated on top of the casings 125 . For example, a configuration in which a protrusion protruding toward the inner circumferential surface of the first member 121 is formed at the upper end of the second casings 125 and the outer band portion 174 is seated on the protrusion may be considered.

A flow path 192 for air and fine dust is formed between the outer band 174 and the second band 172 . Since the radius of the outer band portion 174 is greater than the radius of the second band portions 172 , a flow path 192 for air and fine dust is formed between the outer band portion 174 and the second band portions 172 . When the flow path 192 of air and fine dust is formed between the outer band part 174 and the second band parts 172, there is an advantage that a separate flow path structure does not need to be installed.

The outer band portion 174 forms an outer wall of the secondary cyclone portion 102 together with the casings 125 . The outer wall of the secondary cyclone unit 102 may be divided into a lower portion and an upper portion based on the boundary between the outer band portion 174 and the casings 125 . The casings 125 form a lower outer wall of the secondary cyclone unit 102 , and the outer band unit 174 forms an upper outer wall of the secondary cyclone unit 102 .

The outer walls of the axial flow cyclones 102a and 102b are formed by the casings 125 and the band portions 172, and the outer wall of the secondary cyclone unit 102 is formed by the casings 125 and the outer band portion 174. is formed by The outer walls of the axial flow cyclones 102a and 102b and the outer wall of the secondary cyclone unit 102 are separated from each other. Furthermore, it has been previously described that the boundary between the primary cyclone unit 101 and the secondary cyclone unit 102 is formed by the inner cases 121 and 122 .

Since the vortex finder 171 and the band part 172 are connected to each other by the guide vanes 173, the respective band parts 172 are connected to each other, and the outer band part 174 is connected to the second band parts. , the fine dust separation member 170 may be formed of a single integral member.

3) Axial flow cyclones

When the fine dust separation member 170 is seated on the casings 125 , a set of axial flow cyclones 102a and 102b is formed, and the secondary cyclone unit 102 is a set of axial flow cyclones 102a and 102b . is made of Like the vortex finders 171 or the band portions 172 , the axial flow cyclones 102a and 102b are also radially arranged around the first axial flow cyclone 102a and the first axial flow cyclone 102a at the center. It can be divided into the second axial flow cyclones (102b). It may be understood that the second axial cyclones 102b are disposed along a circumference about the first axial cyclone 102a.

The first axial flow cyclone 102a and the second axial flow cyclones 102b are disposed adjacent to each other, and the band portions of the first axial flow cyclone 102a and the band portions of the second axial flow cyclones 102b are connected to each other do. Also, the band portions of the second axial flow cyclones 102b are sequentially connected to each other. A flow path 191 of air and fine dust is formed between the band portion of the first axial flow cyclone 102a and the band portions of the second axial flow cyclones 102b, and the band portions of the second axial flow cyclones 102b A flow path 192 for air and fine dust is also formed between the 172 and the outer band 174 .

The axial flow cyclones 102a and 102b are disposed to face in a parallel direction, and may be disposed parallel to each other. According to the arrangement, the axial flow cyclones 102a and 102b can be efficiently arranged inside the primary cyclone unit 101 . In particular, since the axial flow cyclones 102a and 102b do not require a separate guide flow path for tangential inflow, more axial flow cyclones 102a and 102b are disposed inside the primary cyclone unit 101 . can be Therefore, even if the axial flow cyclones (102a, 102b) are accommodated inside the primary cyclone unit 101, according to the present invention, compared to the existing axial flow cyclones (102a, 102b) the number of axial flow cyclones (102a, 102b) does not decrease, the cleaning performance is reduced can be prevented.

In addition, unlike the tangential inflow cyclones in which high-speed rotational flow is generated by being biased to one side by the guide flow path, in the axial flow cyclones 102a and 102b, relatively uniform rotational flow is generated over the entire area of the inlet. Since localized high-velocity flow does not occur in the axial flow cyclones 102a and 102b, flow loss due to this can be reduced.

Unlike the configuration in which the secondary cyclone unit 102 is disposed on the upper side of the primary cyclone unit 101 , the secondary cyclone unit 102 of the present invention is accommodated inside the primary cyclone, so that the The overall height may be relatively low.

(4) second dust collection unit (104)

The second dust collecting unit 104 is formed to collect dust separated from the air by the secondary cyclone unit 102 . The first dust collecting unit 103 indicates a space defined by the dust collecting unit boundary 122b and the lower cover 130 .

The inner cases 121 and 122 may be formed of a first member 121 and a second member 122, and the dust collecting unit boundary 122b of the second member 122 is formed as a hollow cylinder to form a lower cover 130. is attached to However, the dust collector boundary 122b may be formed of a hollow polygonal column in addition to a cylinder. The second member 122 may include an accommodating part 122a, and the accommodating part 122a may form an inclination when the dust collector 100 is coupled to the cleaner body 11 . The fine dust discharged from the fine dust outlet 125b may slide by an inclination and be collected by the second dust collecting unit 104 .

The dust collecting unit boundary 122b forms a boundary between the first dust collecting unit 103 and the second dust collecting unit 104 . Accordingly, mixing of the dust collected in the first dust collecting unit 103 and the fine dust collected in the second dust collecting unit 104 can be prevented. The second dust collecting part 104 is formed inside the first dust collecting part 103 , and the first dust collecting part 103 corresponds to the remaining area except for the area corresponding to the second dust collecting part 104 .

The dust collecting unit boundary 122b forms a sidewall of the second dust collecting unit 104 , and the lower cover 130 forms a bottom of the second dust collecting unit 104 . A hole 122c is formed at the boundary between the receiving part 122a of the second member 122 and the dust collecting part, and the hole 122c corresponds to the fine dust inlet of the second dust collecting part 104 .

The inner diameter of the dust collector boundary 122b may be formed to become narrower toward the bottom. According to this structure, it is possible to induce the fall of fine dust, so efficient dust collection is possible.

The structures of the other dust collecting unit boundary 122b and the lower cover 130 are replaced with those described above. The second dust collecting part 104 is formed to open toward the lower part of the dust collecting device 100 like the first dust collecting part 103 , and by the rotation of the lower cover 130 , the first dust collecting part 103 and the second dust collecting part 104 . The configuration in which ) is opened at the same time is also replaced with the one described above.

(5) flow path of dust collector 100

The flow path of the dust collector 100 may be described according to the flow of air.

An inlet 111 of the dust collector 100 is formed in the outer case 110 , and air flows into the dust collector 100 from the inlet-side cleaner inner flow path 14 through the inlet 111 .

The flow path of the primary cyclone unit 101 is formed between the inner peripheral surface of the outer case 110 and the outer peripheral surface of the inner case (121, 122). When dust is separated from the air by the primary cyclone unit 101 , air and fine dust are introduced into the flow path between the primary cyclone unit 101 and the secondary cyclone unit 102 . The first dust collecting unit 103 communicates with the primary cyclone unit 101 .

The flow path between the primary cyclone part 101 and the secondary cyclone part 102 is formed between the outer peripheral surfaces of the casings 125 and the inner peripheral surfaces of the inner cases 121 and 122 . After passing through the mesh filter 127 , air and fine dust are introduced into the secondary cyclone unit 102 through a flow path between the primary cyclone unit 101 and the secondary cyclone unit 102 .

The inlet 111 of the secondary cyclone part 102 is formed between the vortex finder 171 and the band part 172 of each of the axial flow cyclones 102a and 102b. The axial flow cyclones 102a and 102b each include a vortex finder 171 for discharging air and a fine dust outlet 125b for discharging fine dust 172 . The second dust collecting part 104 communicates with the fine dust outlet 125b.

A cover member 150 is disposed above the secondary cyclone unit 102 . The outer cover 151 of the cover member 150 has a shape corresponding to the upper boundary portion 121b of the inner cases 121 and 122 and is disposed to cover the upper boundary portion 121b. As the protrusion 121c of the upper boundary portion 121b is inserted into the groove 152 of the outer cover 151 , the cover member 150 may be seated on the upper boundary portion 121b. The protrusion 121c and the groove 152 serve to set the positions of the first member 121 and the cover member 150 , and the cover member 150 at the position set by the protrusion 121c and the groove 152 . ) of the communication holes 155 are disposed to face the vortex finders 171 . The positions of the protrusion 121c and the groove 152 may be interchanged.

The communication holes 155 are formed in the inner cover 154 of the cover member 150 , and the inclined portion 153 is formed to be inclined to connect the outer cover 151 and the inner cover 154 . The inner cover 154 may be spaced apart from the band portions 172 by the inclined portion 153 , and accordingly, the inlet 111 of the axial flow cyclones 102a and 102b may be sufficiently secured.

A flow path 193 between the secondary cyclone unit 102 and the outlet 141 is formed between the cover member 150 and the upper cover, and the air discharged from the secondary cyclone unit 102 passes through the flow path 193 . It is discharged to the outlet 141 accordingly.

3. Operation of the dust collector 100 and the vacuum cleaner 10

Air and foreign substances are introduced into the inlet 111 of the dust collector 100 through the suction unit 13 (refer to FIG. 1 ) by the suction force generated by the suction motor of the vacuum cleaner 10 . The air introduced into the inlet 111 of the dust collector 100 is sequentially filtered in the primary cyclone unit 101 and the secondary cyclone unit 102 while flowing along the flow path and exits through the outlet 141 . Dust and fine dust separated from the air are collected by the dust collector 100 .

Looking in detail from the process in which dust is separated from the air by the primary cyclone unit 101 , air and foreign substances pass through the inlet 111 of the dust collector 100 to the outer case 110 and the inner cases 121 and 122 . It flows into the annular space therebetween, and causes a rotational motion in the annular space.

In this process, relatively heavy dust gradually flows downward while rotating in a spiral in the space between the outer case 110 and the inner cases 121 and 122 by centrifugal force, and is collected in the first dust collecting unit 103 . The pressurizing unit 160 continuously operates and compresses the dust collected in the first dust collecting unit 103 .

Meanwhile, since air and fine dust are lighter than dust, they pass through the mesh filter 127 by the suction force and flow into the inner cases 121 and 122 . Air and fine dust are introduced into the axial flow cyclones 102a and 102b of the secondary cyclone unit 102 through flow paths 191 and 192 formed in the fine dust separation member 170 .

The dust and fine dust along the guide vanes 173 make a turning motion inside the axial flow cyclones 102a and 102b. Fine dust heavier than air gradually flows downward while rotating between each vortex finder 171 and the band unit 172 , and is discharged to the fine dust outlet 125b and is collected in the second dust collecting unit 104 . Air lighter than fine dust is discharged into the flow path 193 between the cover member 150 and the upper cover 140 through the inside of the vortex finder 171 , and exits the dust collector 100 through the outlet 141 . .

II. second embodiment

The second embodiment is different from the first embodiment only in that an auxiliary member 280 (auxiliary member) is additionally provided, and the rest of the configuration is the same. Therefore, hereinafter, only the configuration different from the first embodiment will be described based on the auxiliary member 280 , and the description of the remaining configuration will be replaced with the description of the first embodiment.

6 is an exploded perspective view of the dust collector 200 according to the second embodiment of the present invention. 7 is a perspective view of the fine dust separation member 270 and the auxiliary member 280 shown in FIG. 6 .

The secondary cyclone unit 202 includes an auxiliary member 280 , and the set of axial flow cyclones includes the casings 225 , the fine dust separation member 270 , and the auxiliary member mounted on the fine dust separation member 270 . (280).

The thickness of the fine dust separation member 270 and the auxiliary member 280 affects the separation performance and efficiency of the dust collector 200 . The auxiliary member 280 functions to assist the fine dust separation member 270 , and when the auxiliary member 280 is formed excessively thick, a decrease in efficiency due to pressure loss is induced. Therefore, the auxiliary member 280 is preferably formed thinner than the fine dust separation member 270 . On the other hand, the fine dust separation member 270 plays a main function of separating fine dust from the air, and is preferably formed to be thicker than the auxiliary member 280 for high separation performance.

1. Auxiliary member (280)

The auxiliary member 280 includes cover portions 281 , auxiliary band portions 282 , auxiliary guide vanes 283 , and auxiliary outer band portion 284 . Since the auxiliary member 280 is a single integral member, the cover portions 281 , the auxiliary band portions 282 , the auxiliary guide vanes 283 , and the auxiliary outer band portion 284 form each part of the auxiliary member 280 . it means. However, depending on the design, the auxiliary member 280 may not include the auxiliary outer band portion 284 .

(1) cover portions 281 (cover portions)

The cover parts 281 may be provided as many as the number of vortex finders 271 , and each cover part 281 is formed to surround the vortex finder 271 of the fine dust separation member 270 . The cover part 281 may have a shape corresponding to the vortex finder 271, for example, may be formed in a hollow cylindrical shape.

The fine dust separation member 270 may include support parts 276 protruding along the outer peripheral surface of the vortex finders 271 , and the support parts 276 measure a step along the outer peripheral surface of the vortex finders 271 . to form The cover part 281 has a shape corresponding to the support part 276 so as to be seated on the support part 276 . For example, when the support part 276 is formed in a circular shape along the outer circumferential surface of the vortex finder 271 , the cover part 281 may also be formed in a circular shape.

The cover part 281 may theoretically have the same diameter as the support part 276 . In addition, the outer diameter of the vortex finder 271 and the inner diameter of the cover portion 281 may be the same. Accordingly, the cover part 281 may be coupled to the vortex finder 271 while surrounding the outer circumferential surface of the vortex finder 271 , and may be seated on the support part 276 .

The position of the auxiliary member 280 is fixed by a structure in which each of the cover parts 281 surrounds each of the vortex finders 271 . Therefore, the auxiliary member 280 and the fine dust separation member 270 do not require a separate configuration for fixing the position, and do not rotate relative to each other even if they do not have a configuration for fixing the position. In this respect, there is a difference between the auxiliary member 280 and the fine dust separating member 270 .

Like the vortex finder 271 of the fine dust separation member 270 , the upper portion of the cover portion 281 may have a higher height than the auxiliary band portion 282 or the auxiliary outer band portion 284 . However, unlike the vortex finder 271 , the lower portion of the cover portion 281 may have the same height as the auxiliary band portion 282 or the auxiliary outer band portion 284 . In FIG. 7 , it can be seen that the upper ends of the cover parts 281 protrude above the auxiliary member 280 , but the lower ends do not. Accordingly, the cover portions 281 may have a constant inner diameter.

Any one of the cover parts 281 may be disposed at the center, and the rest may be disposed radially based on the center. For classification purposes, those disposed at the center may be referred to as first cover units, and those disposed radially based on the first cover unit may be referred to as second cover units.

(2) auxiliary band portions 282

The auxiliary band portions 282 are formed to surround the outer circumferential surface of each cover portion 281 at a position spaced apart from each cover portion 281 . As the auxiliary band portions 282 and the cover portions 281 are spaced apart from each other, inlets of axial flow cyclones (not shown) are formed therebetween. Air and fine dust are introduced into the inlet of the axial flow cyclones along the axial direction.

The auxiliary band units 282 may be named by other names as necessary. For example, the names of the auxiliary ring portion, the auxiliary ring portion, the auxiliary edge portion, the auxiliary circumference portion, the auxiliary circle portion, the auxiliary support portion, the auxiliary connection portion, the auxiliary outer portion, the auxiliary cyclone boundary portion, the auxiliary outer wall portion, etc. to be considered. , and other names are also possible.

The auxiliary band portions 282 are seated on the band portions 272, and are attached to the band portions 272 to form an outer wall of each of the axial flow cyclones 120a, 102b together with the casings 225 and the band portions 272. have a corresponding shape. Referring to FIG. 7 , it can be seen that the band portions 272 are formed in a circular shape, and the auxiliary band portions 282 are also formed in a circular shape. However, it is not excluded that the band portions 272 and the auxiliary band portions 282 are formed in a polygonal shape.

When the auxiliary member 280 is seated on the fine dust separating member 270 and the fine dust separating member 270 is seated on the upper portions of the casings 225 , each of the casings 225 and each of the bands 272 are molded together to form the outer walls of each of the axial flow cyclones. For identification purposes, the outer walls formed by the casings 225 are named lower outer walls, the outer walls formed by the band portions 272 are named intermediate outer walls, and the outer wall formed by the auxiliary band portions 282 . These can be termed the upper outer walls.

Any one of the auxiliary band portions 282 may be disposed at the center, and the rest may be disposed radially with respect to the center. For identification purposes, those disposed at the center may be referred to as first auxiliary band portions, and those disposed radially based on the first auxiliary band portion may be referred to as second auxiliary band portions.

The first auxiliary band unit and the second auxiliary band unit may be connected to each other. The second auxiliary band portions may be connected to each other adjacent to each other. The cross section of each of the auxiliary bands 282 preferably has a circular shape as shown in the drawing. This is because, when the cross section of each auxiliary band portion 282 is formed in a circular shape, even if the adjacent auxiliary band portions 282 are in close contact with each other, a flow path 291a of air and fine dust may be formed therebetween. When the flow path 291a of air and fine dust is formed between the auxiliary band parts 282, there is an advantage that a separate flow path structure does not need to be installed.

It is not excluded that the cross-section of the auxiliary band portions 282 is formed in a polygonal shape. However, although the cross section of the auxiliary bands 282 is formed in a polygonal shape, it is preferable that the air and fine dust flow paths 291a be formed in a polygonal shape.

The auxiliary band portions 282 are provided as many as the number of axial flow cyclones. As described above, since the set of axial flow cyclones is formed by the casings 225, the fine dust separation member 270 and the auxiliary member 280, the number of axial flow cyclones and the number of auxiliary band portions 282 are same.

(3) auxiliary guide vanes (283)

The auxiliary guide vanes 283 are disposed between the cover portion 281 and the auxiliary band portion 282 and are connected to the cover portion 281 and the auxiliary band portion 282 . One side of the auxiliary guide vanes 283 is connected to the outer circumferential surface of each cover portion 281 , and the other side is connected to the inner circumferential surface of each auxiliary band portion 282 .

A plurality of auxiliary guide vanes 283 may be provided for each axial cyclone, and each auxiliary guide vane 283 extends in a spiral direction to generate a swirling flow. One side of the auxiliary guide vanes 283 may be connected to the outer circumferential surface of the cover part 281 along the spiral direction, and the other side may be connected to the inner circumferential surface of the auxiliary band unit 282 along the spiral direction.

The auxiliary guide vanes 283 may extend from the lower ends of the auxiliary bands 282 to the upper ends of the auxiliary bands 282 in a spiral direction. Extending from the bottom to the top means that the auxiliary guide vanes 283 have the same height as the auxiliary band portions 282 . As the auxiliary guide vanes 283 have the same height as the auxiliary band portions 282, the possibility of interference with other components and the possibility of damage may be reduced.

(4) auxiliary outer band portion (284)

The auxiliary outer band portion 284 is formed to surround the auxiliary band portions 282 to form an edge of the auxiliary member 280 . The auxiliary outer band portion 284 surrounds the auxiliary band portions 282 at the periphery of the auxiliary band portions 282 . Previously, the auxiliary band portions 282 were divided into a first auxiliary band portion and a second auxiliary band portion, and according to this division, the auxiliary outer band portion 284 is formed to surround the second auxiliary band portions. The auxiliary outer band unit 284 may be connected to the second auxiliary band units.

The auxiliary outer band portion 284 may also have the same height as the auxiliary band portions 282 and the auxiliary guide vanes 283 . As the auxiliary outer band portion 284 has the same height as the auxiliary band portions 282 and the auxiliary guide vanes 283 , the possibility of interference with other components and the possibility of damage may be reduced.

The auxiliary outer band portion 284 is configured to be seated on the outer band portion 274 of the fine dust separation member 270 . The auxiliary outer band portion 284 may have substantially the same shape as the outer band portion 274 . For example, as shown in the drawings, the auxiliary outer band portion 284 may have a circular shape to correspond to the circular outer band portion 274 .

A flow path 292b of air and fine dust is formed between the auxiliary outer band portion 284 and the second auxiliary band portions. Since the radius of the auxiliary outer band portion 284 is greater than the radius of the second auxiliary band portions 282, the flow path of air and fine dust 292b between the auxiliary outer band portion 284 and the second auxiliary band portions 282 is will be formed When a flow path of air and fine dust is formed between the auxiliary outer band portion 284 and the second auxiliary band portions 282 , there is an advantage that a separate flow passage structure does not need to be installed.

The auxiliary outer band portion 284 forms an outer wall of the secondary cyclone portion 202 together with the outer band portion 274 and the casings 225 . The outer wall of the secondary cyclone part 202 may be divided into a lower part, a middle part, and an upper part based on the outer band part 274 . The casings 225 form a lower outer wall of the secondary cyclone portion 202 , the outer band portion 274 forms an intermediate outer wall of the secondary cyclone portion 202 , and the auxiliary outer band portion 284 forms the secondary cyclone forming the upper outer wall of the portion 202 .

The outer walls of the axial flow cyclones are formed by the casings 225 , the band portions 272 and the auxiliary band portions 282 , and the outer wall of the secondary cyclone portion 202 is the casings 225 , the outer band portion 274 . and an auxiliary outer band portion 284 . The outer walls of the axial flow cyclones and the outer wall of the secondary cyclone unit 202 are separated from each other. Furthermore, it has been previously described that the boundary between the primary cyclone unit and the secondary cyclone unit is formed by the inner cases 221 and 222 .

The cover portions 281 and the auxiliary band portions 282 are connected to each other by auxiliary guide vanes 283 , each auxiliary band portion 282 is connected to each other, and the auxiliary outer band portion 284 is a second auxiliary Since they are connected to the band portions 282 , the auxiliary member 280 may be formed as a single integral member.

2. Axial flow cyclones

When the auxiliary member 280 is seated on the fine dust separating member 270 and the fine dust separating member 270 is seated on the casings 225 , a set of axial flow cyclones is formed, and the secondary cyclone unit is a set of axial flow cyclones is made of Similar to the cover parts 281 and the auxiliary band parts 282, the axial flow cyclones may be divided into a central first axial flow cyclone and a second axial flow cyclone radially arranged around the first axial flow cyclone. there is. The second axial flow cyclones may be understood to be disposed along the circumference about the first axial flow cyclone.

8 is a conceptual diagram partially illustrating a coupling state between the fine dust separation member 270 and the auxiliary member 280 shown in FIG. 6 . 9 is a plan view of the fine dust separation member 270 and the auxiliary member 280 shown in FIG. 6 .

As the auxiliary member 280 is seated on the fine dust separation member 270 , the auxiliary guide vane 283 comes into contact with the guide vane 273 and continuously extends in the spiral direction. In particular, each of the auxiliary guide vanes 283 may be formed to be in surface contact with each of the guide vanes 273 (273', 283').

If any one guide vane 273 and any one auxiliary guide vane 283 are described as the basis, the guide vane 273 and the auxiliary guide vane 283 are provided in different members, but the surface contact 273' , 283'), it continuously extends along the helical direction like a single vane.

More specifically, referring to FIG. 8 , the fine dust separation member 270 includes a first guide vane 273a and a second guide vane 273b, and a first guide vane 273a and a second guide vane 273b. ) are placed adjacent to each other. Similarly, the auxiliary member 280 includes a first auxiliary guide vane 283a and a second auxiliary guide vane 283b, and the first auxiliary guide vane 283a and the second auxiliary guide vane 283b are disposed adjacent to each other. do.

When the auxiliary member 280 is seated on the fine dust separation member 270, the first guide vane 273a and the first auxiliary guide vane 283a are in surface contact with each other to continuously extend along the spiral direction, and the first guide The vane 273a and the first auxiliary guide vane 283a extend in a spiral direction like one vane.

The second guide vane 273b and the second auxiliary guide vane 283b are also continuously extended along the spiral direction by making surface contact with each other, and the second guide vane 273b and the second auxiliary guide vane 283b are as if one It extends along the helical direction like a vane.

According to this configuration, the vanes and the vanes may overlap each other along the coupling direction of the fine dust separation member 270 and the auxiliary member 280 . Specifically, the first auxiliary guide vane 283a and the second guide vane 273b overlap each other. It can be seen from FIGS. 8 and 9 that the first auxiliary guide vane 283a and the second guide vane 273b overlap each other.

The fine dust separation member 270 manufactured by injection in the upper mold and the lower mold must be separated from the upper mold and the lower mold after injection, so that the guide vanes 273 overlap each other along the axial direction of the vortex finder 273. can't This also applies to the auxiliary member 280 .

However, when the fine dust separation member 270 and the auxiliary member 280 are coupled to each other, the first auxiliary guide vane 283a and the second guide vane 273b may overlap each other. This is as if one vane forms a structure in which another vane overlaps each other along the axial direction of the vortex finder 273 or the coupling direction of the fine dust separation member 270 and the auxiliary member 280 .

When the first auxiliary guide vane 283a and the second guide vane 273b overlap each other along the coupling direction of the fine dust separation member 270 and the auxiliary member 280, a high-speed swirling flow can be formed, Through this, high separation performance of the dust collector 200 may be implemented.

Efficiency and separation performance of the dust collector 200 are in inverse proportion to each other. When the structure of the first embodiment in which the set of axial cyclones is configured by the casings 225 and the fine dust separation member 270 is used, a low-speed swirling flow Through this, it is possible to implement the high-efficiency dust collector 200 . Conversely, if the structure of the second embodiment comprising the set of axial cyclones with the casings 225, the fine dust separation member 270, and the auxiliary member 280 is used, the efficiency is somewhat reduced, but the high-speed vortex flow enables high separation It is possible to implement the dust collector 200 of the performance.

In the present specification, since the same and similar reference numbers are given to the same and similar components in different embodiments, reference numerals of components not described in FIGS. 6 to 9 refer to the description of FIGS. 1 to 5 .

Reference numeral 203 denotes a first dust collecting part, and 204 denotes a second dust collecting part.

Reference numeral 210 denotes an outer case, 211 denotes an inlet, 212 denotes a partition, 213 denotes an opening, 214 denotes an inner wall, and 216 denotes a groove.

Reference numeral 221 denotes a first member, 211a, a side boundary, 211b, an upper boundary, 221c, a protrusion, 221d, a skirt, 221e, a plate, 221f, a connection, 221g, a step, and 221h, a position fixing protrusion.

Reference numeral 222 denotes a second member, 222a denotes a receiving part, 222b denotes a dust collecting part boundary, and 222c denotes a hole.

Reference numeral 223 denotes an opening, 225a denotes a hollow part, 225b denotes a fine dust outlet, and 227 denotes a mesh filter.

Reference numeral 230 denotes a lower cover, 231 denotes a hinge, 232 denotes a hook coupling part, and 233 denotes a sealing member.

Reference numeral 240 denotes an upper cover, 241 denotes an outlet, and 242 denotes a handle.

Reference numeral 250 denotes a cover member, 251 denotes an outer cover, 252 denotes a groove, 253 denotes an inclined portion, 254 denotes an inner cover, and 255 denotes a communication hole.

Reference numeral 260 denotes a pressing unit, 261, a rotating shaft, 262, a pressing member, 263, a fixed part, 264, a first driven gear, 265, a power transmission rotating shaft, and 266, a second driven gear.

Reference numerals 291 and 292 denote flow paths of air and fine dust.

The dust collector described above and a cleaner having the same are not limited to the configuration and method of the above-described embodiments, but all or part of each embodiment is selectively combined so that various modifications can be made. it might be

Claims (15)

Including a cyclone unit consisting of a set of axial flow cyclones that separate fine dust from the air introduced in the axial direction,
The set is
casings each forming an outer wall around the hollow part; and
and a fine dust separation member disposed on the casings to form the axial flow cyclones together with the casings,
The fine dust separation member,
vortex finders disposed on the inside of each casing;
Formed to surround at least a portion of the outer circumferential surface of each vortex finder at a position spaced apart from each vortex finder, and a shape corresponding to the casings to be seated on the casings to form outer walls of each axial flow cyclones together with the casings bands having a; and
and guide vanes disposed between the vortex finders and the bands, connected to the vortex finders and the bands, and extending in a spiral direction,
The dust collector, characterized in that the vortex finders, the band parts and the guide vanes adjacent to each other have an integrated structure. According to claim 1,
The set is
a first axial flow cyclone centrally disposed; and
and a second axial flow cyclone radially arranged around the first axial flow cyclone. 3. The method of claim 2,
The second axial flow cyclone is a dust collector, characterized in that formed in six. 3. The method of claim 2,
The first axial flow cyclone and the second axial flow cyclones are formed by the casings and the fine dust separation member,
The band portion of the first axial flow cyclone and the band portion of the second axial flow cyclone are connected to each other,
The dust collector, characterized in that the flow path of air and fine dust is formed between the band portion of the first axial flow cyclone and the band portion of the second axial flow cyclone. 5. The method of claim 4,
The second axial flow cyclone is formed in six pieces, and the air and fine dust flow paths are formed in six pieces. According to claim 1,
One side of the guide vanes is connected to the outer circumferential surface of the vortex finders in a spiral direction, and the other side of the guide vanes is connected to the inner circumferential surface of the band portions along the spiral direction. According to claim 1,
The guide vanes are dust collectors, characterized in that extending from the lower ends of the band portions to the upper ends of the band portions in a spiral direction to form the same height as the band portions. 3. The method of claim 2,
The band portion of the first axial flow cyclone and the band portions of the second axial flow cyclones are integrally formed with each other so that the first axial flow cyclone and the second axial flow cyclones form an integral structure. 9. The method of claim 8,
The vortex finder is a dust collector, characterized in that it is disposed on the upper portion of the casing to be accommodated by the casing. 3. The method of claim 1 or 2,
A dust collector, characterized in that the lower portion of the casing has a narrower inner diameter than the upper portion of the casing. According to claim 1,
A height between the upper and lower portions of the vortex finder is formed to be higher than that of the band, and the band portion is disposed between the upper and lower portions of the vortex finder. According to claim 1,
The dust collector, characterized in that the inlet of each axial flow cyclone is formed in the space between the band part and the vortex finder to allow air and fine dust to flow in the axial direction. 3. The method of claim 2,
Dust collector, characterized in that each axial flow cyclones are arranged to face in parallel to each other. According to claim 1,
The dust collecting device, characterized in that each of the casings and the vortex finder is provided in seven pieces. According to claim 1,
The dust collector, characterized in that each of the vortex finder is provided with four guide vanes.

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