CN218635907U - Dust collecting device of vacuum cleaner - Google Patents

Abstract

According to an aspect of the present invention, there is disclosed a dust collecting device of a vacuum cleaner, comprising: a dust collecting chamber having a dust collecting space formed therein and including an air inflow portion for allowing air to flow into the dust collecting space; a filter provided in the dust collecting space for filtering dust in the air flowing in through the air inflow part; a rotation unit which is provided to the filter so as to be rotatable by air flowing in through the air inflow portion, and accelerates air around the filter when the rotation unit rotates; and a bearing coupled to the rotation unit for smoothly rotating the rotation unit.

Description

Dust collecting device of vacuum cleaner

Technical Field

The technical idea of the present invention relates to a dust collecting device of a vacuum cleaner, and more particularly, to a dust collecting device of a vacuum cleaner capable of improving a separation performance of foreign substances (dust, etc.) by being rotatably provided in a rotating unit of a filter in an inside of a dust collecting chamber and preventing an opening of the filter from being blocked by the foreign substances.

Background

The statements in this section merely provide background information related to embodiments of the present invention and may not constitute prior art.

The vacuum cleaner is a device that performs cleaning in such a manner that air and dust are sucked together using a strong suction force generated by a vacuum pump. Such a vacuum cleaner includes a dust collecting device for collecting dust sucked.

Among the dust collecting devices, the cyclone dust collecting device separates dust from sucked air by using a centrifugal force, and is more sanitary and convenient than a conventional dust collecting device using a dust bag, and thus has been widely used recently.

The cyclone dust collecting apparatus filters dust or foreign substances heavier than air by centrifugal force, collects fine dust by passing air through a filter, and then discharges the air to the outside.

Fig. 1 is a view showing a conventional cyclone dust collecting apparatus, in which air introduced into a dust collecting container 10 through an inlet 11 passes through a filter 13 and is then discharged to the outside of the dust collecting container 10 through an outlet 12. In this process, among the dust 20 contained in the air, the dust having a relatively small size passes through the filter 13 and is then filtered by a predetermined member disposed inside, and among the dust 20 contained in the air, the dust having a relatively large size is separated by centrifugal force and collected inside the dust collecting container 10 without passing through the filter 13.

As described above, the problem of the filter 13 being blocked by the dust flowing into the dust collecting container 10 together with the air occurs, whereby the suction force of the cleaner is gradually weakened, which causes the dust separating and collecting performance to be deteriorated, and the trouble of frequently cleaning the filter 13 is caused.

In order to improve such inconvenience, patent publications No. 10-2000611 and No. 10-1852435 have been proposed, but even based on the above-described inventions, there are problems that the dust separation performance is not prevented from being lowered and that dust adhering to the filter cannot be sufficiently removed.

SUMMERY OF THE UTILITY MODEL

The technical idea of the present invention is to solve the above-mentioned problems, and the technical problem to be solved by the present invention is to provide a dust collecting device of a vacuum cleaner, wherein a rotating rotary unit is used inside a dust collecting chamber to enable foreign matters (dust, etc.) to be effectively separated from air in a relatively slow flow rate region and around a filter surface, which is far away from a suction inlet, and to enable the foreign matters (dust, etc.) attached to the filter surface to float from the filter surface, thereby achieving separation from air, and preventing the filter from being blocked.

Also, a dust collecting apparatus of a vacuum cleaner is provided, which can prevent a malfunction of a rotation unit by blocking inflow of dust into a bearing through an airtight structure of the bearing provided to smoothly rotate the rotation unit, thereby maximizing dust collecting performance.

The technical problems to be solved by the technical idea of the present invention are not limited to the above-described problems, and other technical problems not mentioned can be clearly understood by those skilled in the art from the following description.

Means for solving the problems

According to an aspect of the present invention, there is disclosed a dust collecting device of a vacuum cleaner, comprising: a dust collecting chamber having a dust collecting space formed therein and including an air inflow portion for allowing air to flow into the dust collecting space; a filter provided in the dust collecting space for filtering dust in the air flowing in through the air inflow part; a rotation unit which is provided to the filter so as to be rotatable by air flowing in through the air inflow portion, and accelerates air around the filter when the rotation unit rotates; and a bearing coupled to the rotating unit to smoothly rotate the rotating unit.

According to an exemplary embodiment, the dust collecting apparatus of the vacuum cleaner described above may further include: and a sealing structure formed to accommodate the bearing to prevent dust from flowing into the inside of the bearing.

According to an exemplary embodiment, the sealing structure may be formed such that an inner circumferential surface and an upper surface of the bearing are covered by a cover unit covering an upper portion of the dust collection chamber, and an outer circumferential surface and a lower surface of the bearing are covered by the rotation unit.

According to an exemplary embodiment, the above-mentioned rotation unit may include: a support body which is formed to surround an upper portion of the filter and is provided to be rotatable around the filter; and a plurality of blades which are arranged along the height direction of the filter and are separated from each other in the peripheral direction of the support body, and which apply a rotational force to the support body by contacting with the air flowing into the dust collecting space.

According to an exemplary embodiment, the above-mentioned rotation unit may further include: and an extension rib formed to extend from a lower end of the support body in a height direction of the filter so as to surround a portion of a lower portion of the filter, wherein the blade may be formed to protrude from the extension rib.

According to an exemplary embodiment, the extension rib may be disposed to be spaced apart from a surface of the filter by a predetermined interval.

According to an exemplary embodiment, the extension rib may be formed to be inclined so that a distance from a surface of the filter is farther toward a lower portion of the filter.

According to an exemplary embodiment, the extension rib may be formed to be inclined in a rotation direction with respect to an outer circumferential surface of the filter.

According to an exemplary embodiment, the blade may be formed to be inclined upward with respect to a surface of the extension rib.

Effect of the utility model

According to an embodiment of the technical idea of the present invention, in the inside of the dust collecting chamber, the rotating rotary unit is used, and in the inside of the dust collecting chamber, particularly, in the area away from the suction port and around the surface of the filter, the air and the foreign matters (dust, etc.) having a slow speed are accelerated, thereby not only promoting the separation of the foreign matters (dust, etc.) based on the centrifugal force, but also generating the pressure difference between the surface of the filter and the surroundings thereof by the rotating blade, so that the foreign matters (dust, etc.) attached to the surface of the filter float from the surface of the filter to realize the centrifugal separation, thereby having an effect that the dust separation performance can be greatly improved.

Also, the airtight structure of the bearing provided to smoothly rotate the rotation unit blocks dust from flowing into the bearing, thereby preventing the rotation unit from malfunctioning, thereby having an effect of maximizing dust collecting performance.

The effects obtained by the embodiments according to the technical idea of the present invention are not limited to the aforementioned effects, and other effects not mentioned can be clearly understood by those skilled in the art from the following description.

Drawings

The present invention provides an illustration of the drawings of each figure so that the drawings referred to in the present invention can be more fully understood.

Fig. 1 is a diagram showing a conventional dust collecting apparatus.

Fig. 2 is a perspective view of a dust collecting device of a vacuum cleaner according to the present invention.

Fig. 3 is a sectional view showing a dust collecting apparatus of a vacuum cleaner according to the present invention.

Fig. 4 is an exploded perspective view illustrating a dust collecting device of a vacuum cleaner according to the present invention.

Fig. 5 is a sectional view showing a part of a dust collecting apparatus of a vacuum cleaner according to the present invention.

Fig. 6 is a sectional view showing a part of a dust collecting apparatus of a vacuum cleaner according to the present invention in an enlarged manner.

Fig. 7 is a reference view for explaining a modified example of the rotation unit of the dust collecting device of the vacuum cleaner according to the present invention.

Fig. 8 and 9 are reference views for explaining an operation process of the dust collecting device of the vacuum cleaner according to the present invention.

Fig. 10 is a reference view schematically illustrating a process in which dust is separated when a rotation unit of a dust collecting apparatus of a vacuum cleaner according to the present invention is operated.

Fig. 11 and 12 are reference views for explaining a modified example of the dust collecting device of the vacuum cleaner according to the present invention.

Description of the reference numerals:

200: a dust collecting chamber; 220: an air inflow portion;

210: a dust collecting space; 225: an inflow guide;

230: an air discharge part; 240: opening and closing the door;

250: a cover unit; 260: a closed loop;

270: a light emitting unit; 271: an LED section;

273: a light induction section; 300: a filter;

310: a filter support member; 330: a bearing;

360: a connecting member; 400: a rotation unit;

410: a support body; 420: a blade;

430: an extension rib; d: spaced apart by a distance.

Detailed Description

The technical idea of the present invention can be variously changed and various embodiments can be provided, and specific embodiments are shown in the drawings and described in detail through the detailed description. However, the specific examples of the present invention are not limited to the specific embodiments, but should be understood to include all changes, equivalents, or substitutes included in the scope of the technical idea of the present invention.

In the description of the technical idea of the present invention, when it is considered that the detailed description of the related conventional art may unnecessarily obscure the gist of the technical idea of the present invention, the detailed description thereof will be omitted. Also, the numbers (e.g., first, second, etc.) used in the description of the specification are merely identification marks for distinguishing one constituent element from another constituent element.

In the present invention, it is to be understood that when one component is "connected" or "coupled" to another component, the one component may be directly connected to the other component or directly coupled to the other component, but another component may be provided in the middle. In contrast, it is to be understood that when one constituent element is "directly connected" or "directly coupled" to another constituent element, another constituent element is not provided therebetween. Expressions indicating the relationship between constituent elements such as "\8230between" and "between" \8230, or "with" \8230, adjacent "and" directly with "\8230, adjacent" and the like are also interpreted in the same manner

The terms used in the present invention are used only for describing specific embodiments and are not intended to limit the present invention. A single expression includes a plurality of expressions unless a different meaning is clearly indicated in the context. In the present specification, the terms "comprising", "including", "having", "including", "containing", "involving", or the like, specify the presence of stated features, integers, steps, operations, elements, components, or groups thereof, and should be understood as not to preclude the presence or addition of one or more different features, integers, steps, operations, elements, components, or groups thereof.

All terms used herein, including technical or scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art, without further definition. The term "conventional term" is understood to mean the same as a term defined in advance, and is not intended to mean an idealized or overly formal term unless expressly defined herein.

It is to be noted that the distinction of the components according to the present invention is made only for the different main functions each component performs. That is, two or more structural parts to be described below may be combined into one structural part, or one structural part may be differentiated into two or more different functions for further subdivision. It is to be understood that each component to be described below may additionally perform a part or all of the functions performed by other components in addition to the main function performed by itself, and that a part of the main functions performed by each component may be performed by other components.

A vacuum cleaner is a device that sucks air using suction force and discharges fresh air by separating dust or foreign substances from the air. In particular, recently, wireless vacuum cleaners operated by a battery are widely used without a power cord for user's convenience. Hereinafter, a case where the dust collecting device according to an embodiment of the present invention is used in the above-described cordless vacuum cleaner will be described, but the present invention is not limited thereto, and may be used in various types of cleaners.

Hereinafter, embodiments according to the technical idea of the present invention will be described in detail in order.

Fig. 2 is a perspective view of a dust collecting device of a vacuum cleaner according to the present invention, and fig. 3 is a sectional view showing the dust collecting device of the vacuum cleaner according to the present invention.

Generally, a vacuum cleaner includes: a cleaner body (not shown), a suction nozzle (not shown), a connection member (not shown), and a dust collecting device.

The cleaner body (not shown) includes: a suction motor (not shown) and a suction fan (not shown) that generates suction force by the rotation of the suction motor (not shown).

The suction nozzle (not shown) is configured to suck in air, foreign substances, and the like adjacent to the suction nozzle. The foreign matter refers to a remaining substance other than air, and includes dust, fine dust, and ultra fine dust. Hereinafter, for convenience of description, the above foreign substances are collectively referred to as dust.

The connection member (not shown) is configured to connect the suction nozzle (not shown) and the air inflow portion 220 of the dust collecting device to each other, and is configured to transmit air including dust sucked through the suction nozzle (not shown) to the dust collecting chamber 200. The connecting member (not shown) may be formed in the form of a hose or a pipe.

The cleaner body (not shown), the suction nozzle (not shown), and the connection member (not shown) are well known techniques provided in the conventional vacuum cleaner, and thus, a detailed description thereof will be omitted. Hereinafter, a dust collecting device, which is a main feature of the present invention, will be described in detail.

As shown in fig. 2 to 4, the dust collecting device of the vacuum cleaner according to the present invention includes: a dust collection chamber 200 having a dust collection space 210 formed therein; and a cover unit 250 for covering an upper portion of the dust collection chamber 200. An air inflow part 220 for allowing air to flow into the dust collection space 210 is formed in the dust collection chamber 200, and an air discharge part 230 for discharging the air flowing into the dust collection space 210 is formed in the cover unit 250. At this time, a sealing ring 260 for achieving air tightness of the dust collection chamber 200 may be provided between the outer circumferential surface of the cover unit 250 and the inner circumferential surface of the dust collection chamber 200.

The dust collecting device further includes: a filter 300 provided in the dust collecting space 210 of the dust collecting chamber 200, for filtering dust in the air flowing in through the air inflow part 220; and a rotation unit 400 rotatably provided to the filter 300, for facilitating removal of dust on and around the surface of the filter 300 when the rotation unit 400 is rotated.

First, the dust collecting chamber 200 is a cylindrical member having a dust collecting space 210 therein, and the upper and lower portions thereof are opened, so that the dust collecting space 210 communicates with the outside.

An air discharge part 230 is formed at the cover unit 250 provided at the upper portion of the dust collection chamber 200. The air discharge part 230 is connected to a cleaner body (not shown), and air in the dust collecting space 210 can be discharged to the outside through the air discharge part 230 by the operation of the cleaner body (not shown).

An opening/closing door 240 for opening and closing the opened lower portion of the dust collection chamber 200 by rotating is provided at the lower portion of the dust collection chamber 200. The opening and closing door 240 closes the opened lower portion of the dust collection chamber 200 when the vacuum cleaner is operated, and the opening and closing door 240 may be in an opened state when dust collected inside the dust collection chamber 200 is discharged to the outside.

The dust collecting chamber 200 is detachably formed in the cleaner body (not shown), so that the dust inside the dust collecting chamber 200 can be more effectively discharged.

An air inflow part 220 is formed at an upper side of the dust collection chamber 200. The air inflow part 220 is formed at a side of the dust collection chamber 200 and communicates with the dust collection space 210 of the dust collection chamber 200. The air inflow portion 220 is connected to a suction nozzle (not shown) through a connection member (not shown), and thus allows air containing dusts of various sizes to flow into the dust collecting space 210 of the dust collecting chamber 200. In this case, the air inflow portion 220 may be provided with an inflow guide, which will be described later.

The filter 300 primarily filters dust flowing into the dust collecting space 210 of the dust collecting chamber 200 using openings formed at the surface. The filter 300 may be formed in a hollow cylindrical shape, and repeatedly opened along the outer circumference of the side surface, and the opened upper portion is provided to be connected to the air discharge part 230. In some embodiments, the opening may have a predetermined size, but is not limited thereto.

The support member 310 supports a lower portion of the filter 300, and an upper portion of the filter 300 is disposed adjacent to the air discharge unit 230. At this time, the upper portion of the filter 300 is coupled to the lower portion of the coupling member 360, the upper portion of the coupling member 360 is coupled to the cover unit 250, and the filter 300 can be coupled to the cover unit 250 through the coupling member 360.

Since the filter 300 is hollow and communicates with the air outlet 230, the air flowing into the dust collecting space 210 of the dust collecting chamber 200 passes through the filter 300 and is then discharged through the air outlet 230.

In more detail, in this process, among the dust contained in the air, dust having a relatively large size falls down to the lower portion of the dust collecting space 210 outside the filter 300 by a centrifugal force. Dust having a relatively small size among the dust contained in the air is filtered by an additional member (not shown) while being discharged through the opening of the filter 300. For example, the cyclone part (not shown) may be disposed inside the filter 300, and dust having a small size may flow into the cyclone part (not shown) to be filtered. The clean air filtered of foreign substances such as dust is discharged to the outside through the air discharge part 230.

Hereinafter, with further reference to fig. 4 to 8, a detailed structure of the rotation unit 400 is described.

First, referring to fig. 4 to 8, the rotation unit 400 may include: a support body 410 and blades 420.

The support 410 is formed in a circular ring shape corresponding to the diameter of the bearing 330, thereby surrounding the upper side of the filter 300.

The upper portion of the support 410 may be inserted into the cover unit 250 to be coupled thereto. More specifically, a ring-shaped insertion structure protruding to correspond to the shape of the support 410 may be formed on the lower surface of the cover unit 250, and the support 410 may be inserted into a receiving space defined by the insertion structure to be coupled to each other.

Accordingly, a double-walled sealing structure (refer to fig. 6) may be formed by the insertion structure and the support body 410. The sealing structure as described above can effectively prevent dust from flowing into the interior of the bearing 330, which will be described later.

The inner circumferential surface of the support body 410 may be provided with a bearing 330. The bearing 330 allows the rotation unit 400 to smoothly rotate around the filter 300. For example, the bearing 330 may be a ball bearing, but is not limited thereto.

On the other hand, a sealing structure of a double wall structure for preventing foreign substances such as dust from flowing into the bearing 330 may be formed by the cover unit 250 and the support body 410. Specifically, in the sealing structure, the inner circumferential surface and the upper surface of the bearing 330 are covered by the cover unit 250 covering the upper portion of the dust collecting chamber 200, and the outer circumferential surface and the lower surface of the bearing 330 are covered by the support 410 of the rotating unit 400, and thus the space for accommodating the bearing 330 inside the sealing structure is closed to prevent dust inside the dust collecting apparatus from flowing into the bearing 330.

At this time, the sealing structure may further include a coupling member 360. Specifically, the sealing structure may be formed by a configuration in which a portion of the lower surface of the bearing 330 is covered by the support body 410 of the rotation unit 400, and the remaining portion of the lower surface of the bearing 330 is covered by the connection member 360.

At this time, partition walls may be formed at the cover unit 250, the support body 410, and the coupling member 360, and the partition walls of the cover unit 250, the support body 410, and the coupling member 360 are engaged with each other to be coupled, thereby forming a sealing structure of a multi-wall structure, and more effectively sealing the bearing 330.

The vanes 420 may be provided in plurality as an airfoil-shaped member having a predetermined thickness, and may be provided along the height direction of the filter 300 and arranged to be spaced apart from each other in the outer circumferential direction of the support 410.

The blades 420 come into contact with the air flowing into the dust collecting space 210 to impart a rotational force to the support body 410.

Referring further to fig. 8, a plurality of blades 420 are disposed to be in contact with the air flowing in through the air inflow portion 220, and a rotational force is generated by a force of pushing the blades 420 by the air flowing in through the air inflow portion 220 to rotate the support body 410 of the rotating unit 400. At this time, a part of the dust contained in the air is separated in the dust collecting space 210, and the other part is filtered by the filter 300, and the clean air filtered of the foreign substances such as the dust is discharged to the outside through the air discharge part 230 of the dust collecting chamber 200.

On the other hand, the rotation unit 400 may further include: and an extension rib 430 formed to extend from the lower end of the support 410 in the height direction of the filter 300 to surround a portion of the lower portion of the filter 300, wherein the blade 420 is formed to protrude from the extension rib 430 to have a predetermined area.

The extension rib 430 may be formed in a plate shape to have a predetermined area, and may be formed to have a smaller area toward the lower portion of the filter 300. At this time, the blade 420 protrudingly formed at the extension rib 430 may have an airfoil shape. For example, the blade 420 may have an airfoil shape as follows: the more adjacent to the support body 410, the more the extent of protrusion from the extension rib 430 increases, and the further away from the support body 410, the more the extent of protrusion from the extension rib 430 decreases. At this time, as for the protrusion degree of the vane 420, in order to enlarge a contact area with the air flowing in through the air inflow part 220, the protrusion degree of the portion of the vane 420 located on the same straight line with the air inflow part 220 may be formed to be the maximum. In this case, the blade 420 may be inclined at a predetermined angle such that a contact surface with the air flowing in through the air inflow portion 220 is inclined toward a lower side.

As described above, since the vane 420 is formed in the shape of the airfoil as described above, the vortex is prevented by retreating the flow separation point of the air, so that drag and noise can be reduced.

On the other hand, the extension rib 430 may be formed in plurality and may be disposed to be spaced apart from the surface of the filter 300 by a preset interval. The extension rib 430 according to the present invention does not directly remove foreign substances such as dust attached to the surface of the filter 300 by scraping, as in the prior art (patent publication No. 10-2000611), but rotates together with the blade 420 to generate a pressure difference between the surface of the filter 300 and the surroundings to separate the dust attached to the surface of the filter 300, and thus the extension rib 430 is disposed to be spaced apart from the surface of the filter 300.

At this time, in order to increase a pressure difference between the surface of the filter 300 and the surroundings thereof, the extension rib 430 may be formed obliquely so as to be spaced apart from the surface of the filter 300 more toward the lower portion of the filter 300 (D, refer to fig. 5 and 6).

On the other hand, fig. 7 is a reference view for explaining a modification of the rotation unit 400 of the dust collecting device of the vacuum cleaner according to the present invention, and referring to fig. 7, the extension rib 430 formed at the rotation unit 400 of the dust collecting device according to the present embodiment may be formed to be inclined in the rotation direction with respect to the outer circumferential surface of the filter 300. That is, the extension rib 430 may be disposed to be inclined with respect to the outer circumferential surface of the filter 300 such that one side portion of the extension rib 430 is close to the outer circumferential surface of the filter 300 and the other side portion is distant from the outer circumferential surface of the filter 300.

In this manner, the extension rib 430 is formed to be inclined with respect to the outer circumferential surface of the filter 300 in the rotation direction of the rotation unit 400, so that, when the rotation unit 400 is rotated, the pressure difference of the surface of the filter 300 can be made larger, and particularly, when the extension rib 430 is formed to be inclined with respect to the outer circumferential surface of the filter 300, the sucked air is caused to directly collide with the extension rib 430, so that the function of the vane 420 can be replaced. At this time, if sufficient power for rotating the rotation unit 400 can be obtained only with the extension rib 430, the blade 420 may not be provided in the rotation unit 400 according to circumstances.

On the other hand, the air inflow portion 220 may be provided with an inflow guide 225, the inflow guide 225 serving to increase a contact area of the inflow air and the blade 420 by flowing the air flowing into the dust collection chamber 200 toward the surface of the filter 300. Referring to fig. 8, the inflow guide 225 having a predetermined area may be formed in the air inflow portion 220 in such a manner as to be inclined in a path in which air flows in, and the inflow air changes its course along the inflow guide 225 and flows into the dust collection chamber 200 toward the surface of the filter 300, and as the contact area between the air and the blades 420 is increased by the inflow guide 225, the force pressurizing the blades 420 becomes stronger, so that the rotation speed of the rotation unit 400 may be increased.

Fig. 9 is a reference view for explaining an operation process of a dust collecting device of a vacuum cleaner according to the present invention, and fig. 10 is a reference view schematically showing a process in which dust is separated when a rotating unit 400 of the dust collecting device of the vacuum cleaner according to the present invention is operated.

Referring to fig. 9 and 10, when the rotation unit 400 rotates the filter 300, dust is more smoothly separated.

Specifically, the air flown through the air inflow part 220 pressurizes the blades 420 to rapidly rotate the rotating unit 400, and thus, the blades 420 and the extension ribs 430 are also rapidly rotated, so that the rotating speed of the air and dust flowing inside the dust collecting chamber 200 becomes faster, facilitating the dust separation based on the centrifugal force.

In particular, in the inside of the dust collection space 210, the centrifugal separation of dust may be restricted in a region where the flow rate is relatively slow and distant from the suction port and around the surface of the filter 300, but the flow rate of air is increased due to the rotation of the rotary unit 400, and thus, the dust around the surface of the filter 300 is pushed out to the outside from around the surface of the filter 300, and as a result, the dust is not filtered by the filter 300, but the centrifugal separation is more effectively achieved in the inside of the dust collection space 210.

Further, the blades 420 physically push out the dust A1 having a large particle size while rotating, thereby further promoting the separation of the dust A1 having a large particle size, and the extension ribs 430 rotate together with the blades 420, and a pressure difference is generated between the surface of the filter 300 and the surroundings thereof, thereby pushing out the dust A2 having a small particle size and attached to the surface (opening) of the filter 300 to the outside of the filter 300 while floating, thereby achieving centrifugal separation inside the dust collecting space 210.

As described above, according to the present invention, the separation of dust contained in the air around the filter 300 having a relatively slow flow rate and dust attached to the filter 300 to block the opening of the filter 300 is promoted by the rotation of the rotating unit 400, whereby the dust collecting performance of the dust collecting device can be improved.

On the other hand, the dust collecting apparatus of the vacuum cleaner according to the present invention may further include the opening and closing door 240, and as described above, the opening and closing door 240 is provided at the lower portion of the dust collection chamber 200 and can open and close the opened lower portion of the dust collection chamber 200 by rotating.

At this time, when the opening/closing door 240 is closed, a fixing portion (not shown) may be formed to protrude from a central portion of the opening/closing door 240 so as to fix the support member 310 to the center of the opening/closing door 240, and the fixing portion may guide and fix a lower end of the support member 310.

On the other hand, fig. 11 and 12 are reference views for explaining a modified example of the dust collecting device of the vacuum cleaner according to the present invention, and referring to fig. 11 and 12, the dust collecting device of the vacuum cleaner according to the present invention may further include a light emitting unit 270. The light emitting unit 270 receives power from a power source outside the dust collection chamber 200 to irradiate light to the inside of the dust collection chamber 200, and the light emitting unit 270 may include: an LED section 271 for irradiating light; and a light induction part 273 coupled to the LED part 271 to induce the light irradiated through the LED part 271 into the dust collection chamber 200, wherein the light induction part 273 may be formed of a transparent material to effectively induce the light irradiated from the LED part 271 into the dust collection chamber 200. The light irradiated to the inside of the dust collection chamber 200 by the light emitting unit 270 helps a user to confirm foreign substances such as dust accumulated in the dust collection space 210 inside the dust collection chamber 200 by naked eyes for a long-term use of the vacuum cleaner.

Also, when the light irradiated through the light emitting unit 270 is reflected by the rotation unit 400 or passes through the rotation unit 400, a user can more easily confirm foreign substances such as dust sucked into the dust collection chamber 200 and separated by centrifugal force with the naked eye, and when the rotation unit 400 is stopped for some reason, it is easy to confirm the same, which contributes to taking measures such as cleaning the periphery of the rotation unit 400, thereby easily implementing maintenance of the dust collection device.

The dust collecting device of the vacuum cleaner according to the present invention, which is constructed and operated as described above, accelerates air and dust having a relatively low speed in the interior of the dust collecting chamber using the blades of the rotating unit, thereby not only promoting separation of dust by centrifugal force, but also generating a pressure difference between the surface of the filter and the surroundings thereof by the rotating blades and the extending ribs, so that the dust attached to the surface of the filter floats from the surface of the filter to be centrifugally separated, thereby having an effect of preventing clogging of the filter.

Further, the bearing is provided to smoothly rotate the rotation unit, and the airtight structure of the bearing blocks dust from flowing into the bearing, thereby preventing the rotation unit from malfunctioning, and maximizing dust collecting performance.

Therefore, the dust collecting device of the vacuum cleaner according to the present invention can maximize the dust collecting performance.

In the above, the preferred embodiment of the dust collecting device of the vacuum cleaner according to the present invention has been described.

The foregoing embodiments should be considered illustrative, rather than limiting, and the scope of the invention is indicated by the appended claims rather than by the specific description. And all changes and modifications derived from the meaning, scope and equivalent concept of the claims should be included in the scope of the present invention.

Claims (9)

1. A dust collecting apparatus of a vacuum cleaner, comprising:

a dust collection chamber having a dust collection space formed therein, the dust collection chamber including an air inflow portion for allowing air to flow into the dust collection space;

a filter provided in the dust collecting space, the filter filtering dust in the air flowing in through the air inflow part;

a rotation unit provided to the filter to be rotatable by air flowing in through the air inflow portion, the rotation unit accelerating air around the filter when the rotation unit rotates; and

and a bearing coupled to the rotation unit to smoothly rotate the rotation unit.

2. The dust collecting apparatus of a vacuum cleaner according to claim 1, further comprising:

a sealing structure formed to accommodate the bearing to prevent dust from flowing into an inside of the bearing.

3. The dust collecting apparatus of the vacuum cleaner according to claim 2,

the inner circumferential surface and the upper surface of the bearing are covered by a cover unit which covers the upper part of the dust collecting chamber, and the outer circumferential surface and the lower surface of the bearing are covered by the rotating unit to form the sealing structure.

4. The dust collecting apparatus of a vacuum cleaner according to claim 1,

the rotation unit includes:

a support body which is formed to surround an upper portion of the filter and is provided to be rotatable around the filter; and

and a plurality of blades which are arranged along the height direction of the filter and are spaced from each other in the outer circumferential direction of the support, and which apply a rotational force to the support by coming into contact with the air flowing into the dust collecting space.

5. The dust collecting apparatus of the vacuum cleaner according to claim 4,

the rotation unit further includes:

an extension rib formed to extend from a lower end portion of the support body in a height direction of the filter to surround a portion of a lower portion of the filter;

the blade protrusion is formed at the extension rib.

6. The dust collecting apparatus of the vacuum cleaner according to claim 5,

the extension rib is disposed to be spaced apart from a surface of the filter by a predetermined interval.

7. The dust collecting apparatus of a vacuum cleaner according to claim 6,

the extending rib is formed to be inclined so as to be spaced farther from the surface of the filter as the extending rib extends toward the lower portion of the filter.

8. The dust collecting apparatus of a vacuum cleaner according to claim 6,

the extension rib is formed to be inclined in a rotation direction with respect to an outer peripheral surface of the filter.

9. The dust collecting apparatus of the vacuum cleaner according to claim 7 or 8,

the blade is formed to be inclined upward with respect to a surface of the extension rib.

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