CN113273925B - Dust collecting device of vacuum cleaner - Google Patents
Dust collecting device of vacuum cleaner Download PDFInfo
- Publication number
- CN113273925B CN113273925B CN202110126399.8A CN202110126399A CN113273925B CN 113273925 B CN113273925 B CN 113273925B CN 202110126399 A CN202110126399 A CN 202110126399A CN 113273925 B CN113273925 B CN 113273925B
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- dust
- vacuum cleaner
- dust collecting
- collecting device
- filter member
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- 239000000428 dust Substances 0.000 title claims abstract description 197
- 238000007789 sealing Methods 0.000 claims description 19
- 238000003780 insertion Methods 0.000 claims description 12
- 230000037431 insertion Effects 0.000 claims description 12
- 230000001965 increasing effect Effects 0.000 claims description 4
- 238000001914 filtration Methods 0.000 abstract description 3
- 230000000694 effects Effects 0.000 description 10
- 239000000470 constituent Substances 0.000 description 6
- 238000000034 method Methods 0.000 description 5
- 230000014509 gene expression Effects 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 230000007257 malfunction Effects 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- 238000009825 accumulation Methods 0.000 description 2
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 230000001174 ascending effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000003028 elevating effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 230000001151 other effect Effects 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
Classifications
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- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
- A47L9/00—Details or accessories of suction cleaners, e.g. mechanical means for controlling the suction or for effecting pulsating action; Storing devices specially adapted to suction cleaners or parts thereof; Carrying-vehicles specially adapted for suction cleaners
- A47L9/10—Filters; Dust separators; Dust removal; Automatic exchange of filters
- A47L9/16—Arrangement or disposition of cyclones or other devices with centrifugal action
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- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
- A47L9/00—Details or accessories of suction cleaners, e.g. mechanical means for controlling the suction or for effecting pulsating action; Storing devices specially adapted to suction cleaners or parts thereof; Carrying-vehicles specially adapted for suction cleaners
- A47L9/10—Filters; Dust separators; Dust removal; Automatic exchange of filters
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
- A47L9/00—Details or accessories of suction cleaners, e.g. mechanical means for controlling the suction or for effecting pulsating action; Storing devices specially adapted to suction cleaners or parts thereof; Carrying-vehicles specially adapted for suction cleaners
- A47L9/10—Filters; Dust separators; Dust removal; Automatic exchange of filters
- A47L9/12—Dry filters
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
- A47L9/00—Details or accessories of suction cleaners, e.g. mechanical means for controlling the suction or for effecting pulsating action; Storing devices specially adapted to suction cleaners or parts thereof; Carrying-vehicles specially adapted for suction cleaners
- A47L9/10—Filters; Dust separators; Dust removal; Automatic exchange of filters
- A47L9/16—Arrangement or disposition of cyclones or other devices with centrifugal action
- A47L9/1616—Multiple arrangement thereof
Abstract
According to an aspect of the present invention, there is disclosed a dust collecting device of a vacuum cleaner, comprising: a dust collection chamber having a dust collection space formed therein and including an air inflow portion for allowing air to flow into the dust collection space; a cover unit covering an upper portion of the dust collection chamber; a filter member provided in the dust collection space for filtering dust in the air flowing in through the air inflow portion; and a rotating unit rotatably provided to the filter member by the air flowing in through the air inflow portion, and guiding a part of the descending swirling air flow formed by the air to an upper portion of the filter member when the rotating unit rotates.
Description
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 preventing a lower end portion of a filter member from being clogged with dust by a rotating unit rotatably provided to the filter member inside a dust collecting chamber.
Background
The statements in this section merely provide background information related to embodiments of the present disclosure and may not constitute prior art.
A vacuum cleaner is a device that cleans in such a manner that air and dust are sucked together by using a strong suction force generated by a vacuum pump. The vacuum cleaner includes a dust collecting device for collecting sucked dust.
Among the dust collecting devices, the cyclone dust collecting device that uses centrifugal force to separate dust from sucked air is more sanitary and convenient than the conventional dust collecting device using a dust bag, and thus has been recently widely used.
The cyclone dust collecting apparatus filters out dust, foreign matter, etc., heavier than air using centrifugal force, and passes the air through a filter to collect fine dust, and then discharges the air to the outside.
Fig. 1 is a view showing a conventional cyclone dust collecting apparatus, in which air flowing into a dust collecting container 10 through an inflow portion 11 passes through a filter 13 and is discharged to the outside of the dust collecting container 10 through a discharge portion 12. In this process, dust 20 contained in the air is filtered by the filter 13 and then trapped in the dust collection container 10.
As described above, among the dust flowing into the dust collection container 10 together with the air, the larger dust is sunk to the lower part of the dust collection container 10 by the centrifugal force, but the smaller dust is reversely raised to be concentrated on the lower end part of the filter 13, whereby the lower end part of the filter 13, more specifically, the opening of the lower end part of the filter 13 is blocked.
Therefore, there is a problem in that the suction force of the cleaner becomes gradually weaker, and there is a trouble that the filter 13 needs to be cleaned frequently.
Disclosure of Invention
Problems to be solved by the invention
The technical idea of the present invention is to solve the above-described problems, and an object of the technical idea of the present invention is to provide a dust collecting device of a vacuum cleaner, in which when a descending swirl airflow formed by a swirl airflow forming member is reversely raised and flows into a lower end portion of a filter member, a part of the airflow is guided to an upper portion by an airflow raising member so that a part of the airflow flows into an upper end portion of the filter member, thereby preventing the lower end portion of the filter member from being clogged with dust.
Also, a dust collecting device of a vacuum cleaner is provided, in which a bearing is provided in order to smoothly rotate a rotating unit, and dust is blocked from flowing into the bearing by an airtight structure of the bearing, thereby preventing malfunction of the rotating unit, and thus, dust collecting performance can be maximized.
The technical problems to be solved by the technical ideas 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.
Solution for solving the problem
According to an aspect of the present invention, there is provided a dust collecting device of a vacuum cleaner, comprising: a dust collection chamber having a dust collection space formed therein and including an air inflow portion for allowing air to flow into the dust collection space; a filter member provided in the dust collection space for filtering dust in the air flowing in through the air inflow portion; and a rotating unit rotatably provided to the filter member by the air flowing in through the air inflow portion, the rotating unit guiding a part of the descending swirling air flow formed by the air to an upper portion of the filter member when the rotating unit rotates.
According to an exemplary embodiment, the dust collecting device of the vacuum cleaner may further include: a bearing coupled to an upper inner side of the rotating unit; and a sealing unit which is arranged on the inner side of the rotating unit in a mode of covering the inner side and the lower part of the bearing, thereby preventing dust from flowing into the bearing.
According to an exemplary embodiment, the sealing unit may include: a base member coupled to the rotation unit and covering a lower portion of the bearing, the base member having a ring shape; and a protruding member protruding from the base member and covering an inner side portion of the bearing.
According to an exemplary embodiment, the above-described rotating unit may include: an upper support body formed to surround an upper portion of the filter member and provided to be rotatable about the upper portion of the filter member; a plurality of first members disposed along a side surface of the upper support body so as to be spaced apart from each other, the first members being configured to apply a rotational force to the upper support body by contact with air flowing into the dust collection space, thereby forming the downward swirling air flow; and a plurality of second members formed to extend from the upper support toward the lower side and disposed on the filter member, the second members being configured to contact the downward swirling airflow formed by the first members to guide a part of the downward swirling airflow to the upper side.
According to an exemplary embodiment, the upper support may further include: and an extension insertion protrusion portion formed to extend inward so as to cover at least a part of an upper portion of the bearing.
According to an exemplary embodiment, the upper support part may include: and an inclined portion extending obliquely upward from a lower end of the upper support body in an outward direction.
According to an exemplary embodiment, a scattering structure for scattering dust in air flowing into the direction of the bearing may be formed on an outer surface of the inclined portion.
According to an exemplary embodiment, the tip of the inclined portion may be located at the same plane as the lower surface of the cover unit covering the upper portion of the dust collection chamber or may be located at a higher position than the lower surface of the cover unit with reference to the lower end of the upper support.
According to an exemplary embodiment, the first member may be formed to be inclined such that a contact surface with air flowing into the dust collection space faces a lower side.
According to an exemplary embodiment, the first member may be formed to be thinner as it goes outward from the upper support body side.
According to an exemplary embodiment, the first member may be formed such that the upper end and the lower end are gathered in the center direction of the first member as they go outward from the upper support body side.
According to an exemplary embodiment, the second member may be configured to vertically contact the descending swirling airflow formed by the first member.
According to an exemplary embodiment, the second parts may be arranged in a region between each of the first parts.
According to an exemplary embodiment, the cross section of the second member may vary along an extension direction from the upper support to the lower side.
According to an exemplary embodiment, the above-described rotating unit may further include: and a lower support body formed to surround a lower portion of the filter member and connected to the plurality of second members, wherein the lower support body may be spaced apart from the lower portion of the filter member by a predetermined distance, and a distance between the lower support body and the filter member may be increased from an upper portion side of the lower support body toward a lower portion side thereof.
According to an exemplary embodiment, further comprising: an opening/closing door provided at a lower portion of the dust collection chamber and for opening/closing the dust collection space, the opening/closing door may include: and a guide protrusion protruding from a central portion of the opening/closing door, the guide protrusion being fixed by guiding a support member coupled to a lower portion of the filter member.
According to an exemplary embodiment, the above-described opening and closing door may further include: a first seal ring provided inside the opening/closing door along an outer periphery of the guide projection, the first seal ring being in close contact with an end portion of the support member when the opening/closing door is closed; and a second sealing ring which is arranged outside the opening and closing door along the periphery, and when the opening and closing door is closed, the second sealing ring is closely attached to the end part of the dust collection chamber.
According to an exemplary embodiment, the bottom surface of the opening and closing door may be formed to be inclined downward from the outer side Zhou Yue toward the guide protrusion.
Effects of the invention
According to the embodiment of the technical idea of the present invention, when the swirling air flow formed by the swirling air flow forming member is swirled down and then is raised reversely to flow into the lower portion of the filter member, a part of the air flow is guided to the upper portion of the filter member by the air flow raising member so that the air flow uniformly flows into the upper portion and the lower portion of the filter member, thereby having an effect that the lower end portion of the filter member can be prevented from being clogged with dust.
In addition, the bearing is provided to smoothly rotate the rotating unit, and the airtight structure of the bearing blocks the dust from flowing into the bearing, thereby preventing the rotation speed of the rotating unit from being reduced and malfunction, and thus, the dust collection performance of the vacuum cleaner can be maximized.
The effects obtained by the embodiments according to the technical ideas 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 a brief description of the drawings for each of the figures to provide a more complete understanding of the drawings referenced in the present invention.
Fig. 1 is a view showing a conventional dust collecting device.
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 device of a vacuum cleaner according to the present invention.
Fig. 4 is an exploded perspective view showing a dust collecting device of a vacuum cleaner according to the present invention.
Fig. 5 is a sectional view showing a portion of a dust collecting device of a vacuum cleaner according to the present invention.
Fig. 6 is a sectional view showing a part of a dust collecting device of a vacuum cleaner in accordance with the present invention in an enlarged manner.
Fig. 7 is a top view showing a rotating unit of a dust collecting device of a vacuum cleaner according to the present invention.
Fig. 8 is an enlarged view showing a part (a) of the inclined part of the rotating unit of the dust collecting device of the vacuum cleaner in accordance with the present invention.
Fig. 9 is a view showing an operation state of a dust collecting device of a vacuum cleaner according to the present invention.
Fig. 10 is a sectional view showing an air flow-up part of a dust collecting device of a vacuum cleaner according to the present invention.
Fig. 11 is a reference diagram for explaining a closing process of an opening and closing door of a dust collecting device of a vacuum cleaner according to the present invention.
Reference numerals illustrate:
200: a dust collection chamber; 210: a dust collecting space;
220: an air inflow portion; 230: an air discharge part;
240: opening and closing the door; 241: a guide protrusion;
243. 245: the first closed loop and the second closed loop; 250: a cover unit;
251: insertion protrusion: 260: a closed loop;
300: a filter member; 310: a support member;
330: a bearing; 340: a sealing unit;
341: a base member; 343: a protruding member;
350: a cyclone part; 400: a rotating unit;
410: an upper support; 411: extending the insertion protrusion;
413: an inclined portion; 415: a random structure;
420: a first component; 430: a second component;
440: a lower support.
Detailed Description
The technical idea of the present invention is capable of various modifications and various embodiments, and a specific embodiment is shown in the drawings and described in detail by way of a specific description. However, the specific examples of the present invention are not limited to the specific embodiments, but should be construed to include all changes, equivalents, or alternatives included in the scope of the technical idea of the present invention.
In the description of the technical idea of the present invention, a detailed description thereof will be omitted when it is considered that a specific description of the related conventional technology may unnecessarily obscure the gist of the technical idea of the present invention. Moreover, the numerals (e.g., first, second, etc.) used in the description of the specification are merely identification marks for distinguishing one component from another.
In the present invention, it should be understood that when one component is "connected" or "coupled" to another component, the one component may be directly connected or directly coupled to the other component, but another component may be provided therebetween. In contrast, it should be understood that when one component is "directly connected" or "directly coupled" to another component, no further component is provided in between. Expressions that describe the relationship between the constituent elements such as "between …" and "between …" or "adjacent to …" and "directly adjacent to …" and the like are also interpreted in the same manner
The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. A single expression includes multiple expressions as long as no different meaning is explicitly indicated on the text. In this specification, the terms "comprises" and "comprising," etc., are used to specify the presence of stated features, integers, steps, operations, elements, components, or groups thereof, and are to be understood to not preclude the presence or addition of one or more different features or 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 other definitions. The conventional terms are to be understood as meaning the same as the expressions of the related art, and are not to be interpreted as idealized or excessively formalized meanings without being explicitly defined in the present invention.
It is to be noted that the distinction of the structural parts according to the present invention is merely distinguished by the different main functions each structural part serves. That is, two or more structural parts to be described below are combined into one structural part, or one structural part may be further divided into two or more structural parts according to different functions of more finer division. Of course, each of the constituent elements described below may perform a part or all of the functions performed by other constituent elements in addition to the main functions performed by the constituent elements themselves, and a part of the functions performed by each constituent element may be performed by other constituent elements.
A vacuum cleaner is a device that sucks air by suction and discharges fresh air by separating dust or foreign substances from the air. In particular, recently, wireless vacuum cleaners operated by a battery without a power cord are widely used for convenience of users. Hereinafter, although the case where the dust collecting device according to the embodiment of the present invention is the dust collecting device for the wireless vacuum cleaner as described above is described, it is not limited thereto, and of course, it may be applied to a variety 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) for generating suction force by rotating the suction motor (not shown).
The suction nozzle (not shown) is configured to suck air, foreign matter, and the like adjacent to the suction nozzle. The foreign matter refers to the remaining substances other than air, and includes dust, fine dust, and ultra fine dust. Hereinafter, for convenience of explanation, the foreign matters 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 the air containing dust sucked through the suction nozzle (not shown) to the dust collecting chamber 200. The connection member (not shown) may be formed in the shape of a hose or a tube.
The cleaner body (not shown), the suction nozzle (not shown), and the connection member (not shown) are known techniques provided in conventional vacuum cleaners, and thus detailed descriptions 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 portion 220 for allowing air to flow into the dust collection space 210 is formed in the dust collection chamber 200, and an air discharge portion 230 for discharging air flowing into the dust collection space 210 is formed in the cover unit 250. The dust collecting device further includes: a filter member 300 provided in the dust collection space 210 of the dust collection chamber 200 and filtering dust in the air flowing in through the air inflow part 220; the rotation unit 400 is rotatably provided to the filter member 300, and rotates to guide a part of the air flowing in through the air inflow portion 220 to the upper portion of the filter member 300 when the air flows into the filter member 300 while forming a swirling air flow and descending and then ascending reversely.
First, the dust collection chamber 200 is a cylindrical member having a dust collection space 210 therein, and the upper and lower portions are opened, whereby the dust collection space 210 communicates with the outside.
The cover unit 250 provided at the upper portion of the dust collection chamber 200 is formed with an air discharge portion 230. The air discharge part 230 is connected to the cleaner body (not shown), and air in the dust collection 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/closing the opened lower portion of the dust collection chamber 200 by rotation is provided at the lower portion of the dust collection chamber 200. The opening and closing door 240 closes an 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 inside the dust collection chamber 200 is removed.
The dust collection chamber 200 is detachably formed in the cleaner body (not shown), thereby more effectively removing dust inside the dust collection chamber 200.
An air inflow portion 220 is formed at an upper side of a side surface of the dust collection chamber 200. The air inflow part 220 has a pipe shape and is formed to penetrate a side surface of the dust collection chamber 200. The air inflow part 220 is connected to the suction nozzle through the connection member, thereby allowing air containing dust of various sizes to flow into the dust collecting space 210 of the dust collecting chamber 200.
The filter member 300 is a member having a hollow cylindrical shape, and an opening is repeatedly formed along the outer periphery of the side surface, and an open upper portion is provided to be connected to the air discharge portion 230. In some embodiments, the opening may have a prescribed size, but is not limited thereto.
Further, the lower portion of the filter member 300 is supported by the support member 310 having a relatively small size in which a part of dust is separated and accumulated, and the upper portion of the filter member 300 is disposed adjacent to the air discharge portion 230.
Since the hollow inside of the filter 300 communicates with the air discharge part 230, the air flowing into the dust collecting space 210 of the dust collecting chamber 200 passes through the filter 300 and is discharged through the air discharge part 230.
In more detail, in this process, dust having a relatively large size among the dust contained in the air falls to the lower portion of the dust collection space 210 outside the filter member 300 by centrifugal force (refer to arrow F of fig. 9). Further, among the dust contained in the air, dust having a relatively small size is discharged through the opening of the filter 300 along the air flow rising in the reverse direction, and is filtered by an additional filter (not shown) or is separated and accumulated on the support member 310 side (see arrow E, V of fig. 9). For example, the cyclone part 350 may be disposed inside the hollow part of the filter member 300 and the support member 310, and the dust having a small size may be introduced into the cyclone part 350 to be filtered and may be separated and accumulated at a lower part of the support member 310. The fresh air filtered with the dust is discharged to the outside through the air discharge part 230.
As shown in fig. 4 to 7, the rotation unit 400 includes: an upper support 410 formed to surround an upper portion of the filter 300 and provided rotatably centering on the upper portion of the filter 300; a plurality of first members 420 disposed along the side surface of the upper support 410 so as to be spaced apart from each other, and configured to apply a rotational force to the upper support 410 by contacting with air flowing into the dust collection space 210, thereby forming a swirling air flow; and a second member extending from the upper support 410 to the lower side and disposed on the filter member 300, wherein the second member 430 is disposed so as to be in vertical contact with the swirling airflow formed by the first member 420. Wherein the first part 420 may be referred to as a swirling airflow forming part and the second part 430 may be referred to as an airflow elevating part.
Hereinafter, a detailed structure of the rotation unit 400 will be described.
The upper support 410 is formed as a circular ring-shaped member corresponding to the diameter of the bearing 330, thereby surrounding the upper side of the filter member 300.
Also, the upper portion of the upper support 410 may be inserted into the cover unit 250 to achieve coupling. More specifically, an insertion protrusion 251 of a ring shape protruding to correspond to the shape of the upper support body 410 may be formed at the lower surface of the cover unit 250, and the upper support body 410 may be inserted into an inner receiving space defined by the insertion protrusion 251 to achieve coupling.
Accordingly, a double wall structure is formed by inserting the protrusion 251 and the upper support 410, and more particularly, a double wall structure may be formed by extending a portion of the insertion protrusion 411 of the insertion protrusion 251 and the upper support 410 (refer to fig. 5). The double wall structure and the inclined portion 415 structure of the upper support 410 described later can effectively prevent dust from flowing into the inside of the bearing 330 described later.
A bearing 330 may be provided between the upper support 410 and an outer side surface of an upper portion of the sealing unit 340 such that the rotating unit 400 can rotate centering on the upper portion of the sealing unit 340. The bearing 330 smoothly rotates the rotation unit 400, thereby improving dust collection performance of the dust collection device. For example, the bearing 330 may be a ball bearing, but is not limited thereto.
A sealing unit 340 may be disposed inside the rotation unit 400, and the sealing unit 340 supports the bearing 330 and prevents dust from flowing into the inside of the bearing 330. Specifically, the sealing unit 340 supports and covers the inner side and the lower portion of the bearing 330 at the inner side of the rotation unit 400, thereby preventing dust from flowing into the inside of the bearing 330. On the other hand, a structure in which the sealing unit 340 is separated from the filter member 300 is shown in fig. 4, but is not limited thereto, and the sealing unit 340 may be integrally formed with the filter member 300.
The sealing unit 340 may include a base member 341 and a protruding member 343. Referring to fig. 5 and 6, the base member 341 is formed in a ring shape, and the bearing 330 is located on an upper surface of the base member 341. The protruding member 343 protrudes from the base member 341 and covers the inner side of the bearing 330. Specifically, the protruding member 343 protrudes from the inner diameter of the base member 341 by a predetermined height, and the bearing 330 is inserted into the protruding member 343 so that the bearing 330 is positioned inside the sealing unit 340.
On the other hand, the upper support 410 may be formed with an extension insertion protrusion 411. The extended insertion protrusion 411 is formed to extend inward from the upper portion of the upper support 410, and may cover at least a portion of the upper portion of the bearing 330 (refer to fig. 6).
In this way, the sealing unit 340 and the extended insertion protrusion 411 formed at the upper support body 410 of the rotating unit 400 are configured to surround the bearing 330, thereby further improving the effect of preventing dust from flowing into the inside of the bearing 330.
On the other hand, the upper support part 410 may further include an inclined part 413. Referring to fig. 6 and 7, an inclined portion 413 may be formed at an outer circumference of the upper support 410 of the rotation unit 400, and the inclined portion 413 is formed to extend obliquely upward from a lower end of the upper support 410 in an outer direction. When the rotation unit 400 rotates, the inclined portion 413 radially guides dust flowing into the bearing 330 along the inclined portion 413 Flows out, thereby preventing dust from flowing into the inside of the bearing 330.
At this time, a scattering structure for scattering air flowing into the direction of the bearing 330 may be formed on the outer surface of the inclined portion 413. Referring to fig. 8 (fig. 8 is an enlarged view of a portion (a) of the inclined portion 413 shown in fig. 7), a random structure such as an island-shaped convex portion (a of fig. 8) or a line-shaped convex portion (b of fig. 8) formed to extend from an outer end portion to an inner end portion may be formed on an outer surface of the inclined portion 413. Due to this scattering structure, dust in the inflow air is scattered while rotating, thereby being ejected to the opposite side of the bearing 330, and the inflow and accumulation of dust into the inside of the bearing 330 can be more effectively prevented. On the other hand, the above-described scattering structure is not limited to the example shown in fig. 8.
On the other hand, one end portion of the inclined portion 413 facing the cover unit 250 side is not entirely inserted into the outer accommodating space defined by the insertion protrusion 251 on the lower surface of the cover unit 250, but may be spaced apart from the inner surface of the recess forming the outer accommodating space by a predetermined distance.
In some embodiments, a tip of one end of the inclined portion 413 is spaced apart from an inner surface of the recess by a predetermined distance, and a tip of one end of the inclined portion 413 is located on the same plane (coplaner) as a lower surface of the cover unit 250 extending outward from an inner surface of the recess.
In another embodiment, the tip of one end of the inclined portion 413 is spaced apart from the inner surface of the recess by a predetermined distance, and is positioned higher than the lower surface of the cover unit 250 when the tip of one end of the inclined portion 413 is positioned with respect to the lower end of the upper support 410 (for example, the tip of the other end of the inclined portion 413).
Therefore, when the rotation unit 400 rotates, a problem that dust collides with a side surface of the upper support 410 to flow into the inclined portion 413 side is prevented, and dust can smoothly flow out from the inclined portion 413 to the outside.
The first member 420 of the rotation unit 400 is configured as a wing (airfoil) shaped member having a prescribed thickness, and is configured in plurality, and is configured to be spaced apart from each other along a side surface of the upper support 410.
At this time, each of the first members 420 is disposed to be in contact with the air flowing in through the air inflow part 220, and the upper support 410 is rotated by the force of the air flowing in through the air inflow part 220 pushing the first member 420.
Each of the first members 420 is inclined at a predetermined angle such that a contact surface with the air flowing in through the air inflow part 220 is inclined toward the lower side.
The air flowing in through the air inflow portion 220 is converted from a straight air flow (arrow D in fig. 9) to a descending swirl air flow (arrow C in fig. 9) by contact with the first member 420. Since the weight of the air and the weight of the dust are different, if the descending swirling air flow as described above is formed, the dust can be separated from the air by centrifugal force. At this time, when the first member 420 is formed to be perpendicular to the flow direction of the air flowing in through the air inflow part 220, the air flowing in through the air inflow part 220 collides with the front surface of the first member 420 to generate a vertically descending air flow, and thus normal centrifugal rotation cannot be performed, and a phenomenon occurs in which the air flowing in through the air inflow part 220 is continuously divided by the rotation of the first member 420, thereby causing turbulence and noise to be generated.
On the other hand, the first member 420 may have a wing shape having a smaller thickness from the upper support 410 side to the outside. For example, the first component 420 may have the following airfoil morphology: the rotation direction surface protrudes further from the upper support 410 as it is adjacent to the upper support 410, and the protruding degree of the rotation direction surface decreases as it is further away from the upper support 410, whereby the rotation direction surface and the end of the opposite surface thereof are connected by a line or are respectively connected to predetermined surfaces and are terminated to each other to have a wing shape. The reason why the first member 420 is formed in the shape of the wing as described above is that the vortex is prevented by retreating the flow separation point of the air, thereby reducing resistance and noise.
When the thickness of the first member 420 is thinner from the center of the upper support 410 toward the outside, the generated airflow moves to the side while flowing along the first member 420 as shown by arrow W in fig. 9. The air flow flowing in the direction of arrow W in fig. 9 is a counter air flow generated by the rotating unit 400 having a higher speed than the swirling air flow (i.e., the air flow flowing in the direction of arrow D and swingingly descending at the angle of arrow C). The air flow generated in the above manner moves in the direction of the arrow W (i.e., moves to the side of the first member 420) of fig. 9, and thus, collision between the air flowing in through the air inflow part 220 and swirled down and the counter air flow generated in the direction of the arrow W is minimized, so that generation of vortex can be reduced.
Further, the first member 420 may be formed such that the upper end and the lower end are gathered in the center direction of the first member 420 as they go outward from the upper support 410 side. When the upper and lower ends of the first member 420 are not gathered in the central direction of the first member 420 but gathered in the upper portion of the central direction, the distance between the inner side surfaces of the first member 420 and the dust collecting chamber 200 becomes closer, whereby relatively long and large foreign substances such as paper towels, hair, etc., may be caught between the inner side surfaces of the first member 420 and the dust collecting chamber 200. In order to prevent such a problem, the first member 420 is formed such that the upper and lower ends are gathered in the central direction of the first member 420, so that the movement of the rotary unit 400 can be made smoother.
The first member 420 is formed to be inclined at a predetermined angle to the rotation direction side of the upper support 410. When the first member 420 is formed obliquely, the descending swirl flow formed by the air flowing in through the air inflow part 220 contacting the first member 420 is formed toward the inner side surface of the dust collection chamber 200. Since the swirling air flow is formed to face the inner side surface of the dust collection chamber 200 in the above-described manner, the dust is not sucked into the filter member 300 before centrifugal separation from the air, and can be lowered to the lower portion of the dust collection chamber 200 while maintaining the centrifugal force.
On the other hand, the second member 430 is formed to extend from the upper support 410 toward the lower side, and the second member 430 can be disposed on the side surface of the filter member 300 so as to contact the swirling airflow formed by the first member 420 at a predetermined angle.
The second member 430 is formed to be inclined at a predetermined angle, so that the air flowing in through the air inflow portion 220 is rotated downward by the first member 420 and then contacts the second member 430 at a predetermined angle before flowing into the lower portion of the filter member 300.
As will be described later, in order to guide a portion of the air flow to the upper portion in order to contact the second member 430 with the swirling air flow formed by the first member 420, it is preferable that the air contact surface of the first member 420 and the air contact surface of the second member 430 are perpendicular to each other (90 degrees).
The second members 430 are provided in plurality and are spaced apart from each other along the side of the filter member 300, but each of the second members 430 may be disposed at a region between each of the first members 420. At this time, a ring-shaped lower support 440 is connected to an end of the second member 430, thereby supporting the second member 430.
The second member 430 may be a member formed in a bar shape having a thickness varying along the extension direction. For example, the second member 430 may be formed as follows: the upper region, i.e., the region adjacent to the upper support 410, is formed to protrude toward the outside of the filter member 300 from the center side (refer to fig. 10 (a)), and the lower region, i.e., the region adjacent to the lower support 440, is formed to protrude the right side end of the second member 430 toward the outside of the filter member 300, and the cross-sectional area decreases toward the left side end (refer to fig. 10 (b)).
Since the second member 430 is formed to be elongated from the upper support 410, when the upper support 410 is rotated, the second member 430 is also rotated together.
Wherein the second member 430 is scattered by guiding the descending swirling air flow formed by the first member 420 to the upper side of the filter member 300. More specifically, the swirling descending air flow formed by the first member 420 flows into the lower portion of the filter member 300, but before flowing into the lower portion of the filter member 300, a part of the air flow rises along the inclined surface of the lower portion of the second member 430 which rotates, thereby moving to the upper portion of the filter member 300. At this time, the air flow moving to the upper portion of the filter member 300 rapidly flows into the upper portion of the filter member 300 along the upper curved surface of the other second member 430 which rotates immediately. This is achieved based on the Coanda Effect (Coanda Effect), which is the tendency of a fluid or air stream ejected by approaching an object or wall to flow in such a way as to be attracted to adhere to the surface thereof.
In this way, since a part of the air flow flowing into the lower portion of the filter 300 is guided to the upper portion of the filter 300 and flows into the upper portion of the filter 300, dust does not concentrate in the lower portion of the filter 300 but uniformly flows into the upper and lower portions of the filter 300, and thus the occurrence of clogging of the lower portion of the filter 300 can be prevented.
In order to generate the coanda effect based on the movement of the air flow, the second member 430 needs to rotate faster than the swirling air flow in the dust collecting space 210 of the dust collecting chamber 200. If the rotational speed of the second member 430 is the same as the whirling airflow speed, the speed of the second member 430 converges to 0 with reference to the airflow speed, and thus the second member 430 merely obstructs the airflow flowing into the filter member 300, and cannot cause any airflow change. However, since the cross-sectional area of the air inflow part 220 is narrower than that of the dust collection space 210, the air flowing in through the air inflow part 220 flows faster than the swirling air flow in the dust collection chamber 200 based on the bernoulli principle. Thereby, the rotating unit 400, which is disposed adjacent to the air inflow part 220 to rotate by means of the air flowing in through the air inflow part 220, rotates faster than the whirling airflow in the dust collection chamber 200, and the second member 430 included in the rotating unit 400 also rotates faster than the whirling airflow in the dust collection chamber 200.
As described above, the lower support 440 of the rotation unit 400 is formed as a member having a circular ring shape to surround the lower side of the filter member 300 and is connected to one end of the second member 430.
The lower support body 440 faces the lower portion of the filter member 300, more specifically, a portion of each of the hollow lower end and the lower inclined portion, and the lower support body 440 may be disposed to be spaced apart from the hollow lower end and the lower inclined portion of the filter member 300 by a prescribed interval, respectively. At this time, the inner side surface of the lower support 440 may have a shape bent to correspond to the shape of the hollow lower end and the lower inclined portion of the filter member 300.
According to an embodiment, the interval between the inner side surface of the lower supporter 440 and the lower inclined portion of the filter member 300 may be greater than the interval between the inner side surface of the lower supporter 440 and the lower end of the hollow portion of the filter member 300. This is to prevent a part of dust of the air flow falling in the non-rotation from being caught in the partitioned space of the lower support body 440 and the filter member 300 to cause a problem of friction of the lower support body 440 and the filter member 300, and to provide an enlarged space so that the dust flowing into the partitioned space can be smoothly discharged.
Further, the distance between the inner surface of the lower support 440 and the lower inclined portion of the filter member 300 may be increased as it is lower, according to the inclination of the lower inclined portion.
Fig. 11 is a reference diagram for explaining a closing process of an opening and closing door of a dust collecting device of a vacuum cleaner according to the present invention, and as previously described, the opening and closing door is provided at a lower portion of the dust collecting chamber 200 so that the opened lower portion of the dust collecting chamber 200 can be opened and closed by rotation.
The opening and closing door 240 may further include: a guide protrusion 241 is formed to protrude from the center of the opening/closing door 240, and is fixed by guiding a support member 310 coupled to the lower portion of the filter member 300. When the opening/closing door 240 is closed, the support member 310 needs to be fixed to the center of the opening/closing door 240, and even if the support member 310 of the filter member 300 is not aligned to the center of the opening/closing door 240, it is possible to slide and fit along the arc-shaped guide protrusion 241, thereby fixing the support member 310 to the center position.
The opening and closing door 240 may further include a first closing ring 243 and a second closing ring 245. The first closing ring 243 is provided inside the opening/closing door 243 along the outer circumference of the guide protrusion 241, and when the opening/closing door 240 is closed, the first closing ring 243 is closely attached to the end of the support member 310, and the second closing ring 245 is provided outside the opening/closing door 240 along the outer circumference, and when the opening/closing door 240 is closed, the second closing ring 245 may be closely attached to the end of the dust collection chamber 200.
That is, the first closing ring 243 ensures that the support member 310 and the opening and closing door 240 are completely closed, and the second closing ring 245 ensures that the dust collection chamber 200 and the opening and closing door 240 are completely closed.
The bottom surface of the opening/closing door 240 may be formed to be inclined downward from the outer circumference toward the guide protrusion 241. Specifically, the upper bottom surface of the opening and closing door 240 may be concavely formed to be inclined downward toward the central portion, and thus, the guide protrusion 241 is located at the lower portion as much as possible, thereby having an effect of increasing the volume of the space where dust is collected inside the support member 310.
The dust collecting device of the vacuum cleaner according to the present invention, which is constructed and operated as described above, guides a portion of the whirling air flow formed by the first member 420 of the rotary unit 400 to the upper portion of the filter member 300 through the second member 430 of the rotary unit 400, so that the air flow can uniformly flow into the entire area of the filter member 300, thus having an effect of preventing the lower end of the filter member 300 from being blocked by dust.
Further, the inflow and accumulation of dust into the bearing 330 provided for smooth rotation of the rotation unit 400 are blocked, thereby preventing the rotation speed of the rotation unit 400 from being lowered and malfunction.
Therefore, the dust collecting device of the vacuum cleaner according to the present invention can maximize dust collecting performance.
In the above, a preferred embodiment of the dust collecting device of the vacuum cleaner according to the present invention is explained.
The foregoing embodiments should be considered as illustrative rather than limiting in all respects, and the scope of the invention is best understood from the following claims as opposed to the detailed description. And all changes or modifications that come within the meaning and range of equivalency of the claims are intended to be embraced therein.
Claims (18)
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 member provided in the dust collection space, the filter member being configured to filter dust in the air flowing in through the air inflow portion; and
a rotating unit which surrounds the upper part and the side part of the filter member and is rotatably provided to the filter member by means of the air flowing in through the air inflow part, and guides a part of the descending whirling air flowing in the lower part of the filter member to the upper part of the filter member when a part of the descending whirling air flow formed by the air flows in the lower part of the filter member when the rotating unit rotates,
the rotating unit includes:
and an upper support body formed to surround an upper portion of the filter member, the upper support body being provided so as to be rotatable about the upper portion of the filter member.
2. A dust collecting device of a vacuum cleaner as set forth in claim 1, further comprising:
A bearing coupled to an upper inner side of the rotating unit; and
and a sealing unit provided inside the rotating unit so as to cover an inner side portion and a lower portion of the bearing, thereby preventing dust from flowing into the bearing.
3. A dust collecting device of a vacuum cleaner as set forth in claim 2, wherein,
the sealing unit includes:
a base member coupled to the rotation unit and covering a lower portion of the bearing, the base member having a ring shape; and
and a protruding member protruding from the base member and covering an inner side portion of the bearing.
4. A dust collecting device of a vacuum cleaner as set forth in claim 1, wherein,
the rotating unit further includes:
a plurality of first members disposed along a side surface of the upper support body so as to be spaced apart from each other, the first members being configured to apply a rotational force to the upper support body by contact with air flowing into the dust collection space, thereby forming the downward swirling air flow; and
and a plurality of second members formed to extend from the upper support body to a lower portion side, the second members being disposed on the filter member, the second members being configured to guide a part of the downward swirling air flow flowing into a lower portion of the filter member to an upper portion by being in contact with the downward swirling air flow formed by the first members.
5. A dust collecting device of a vacuum cleaner as set forth in claim 4, wherein,
the upper support includes:
and an extension insertion protrusion portion formed to extend inward so as to cover at least a part of an upper portion of the bearing coupled to an upper inner side of the rotation unit.
6. A dust collecting device of a vacuum cleaner as set forth in claim 4, wherein,
the upper support includes:
and an inclined portion formed to extend obliquely upward from a lower end of the upper support body in an outward direction.
7. A dust collecting device of a vacuum cleaner as set forth in claim 6, wherein,
a scattering structure for scattering dust in air flowing into a bearing direction coupled to an upper inner side of the rotating unit is formed on an outer surface of the inclined portion.
8. A dust collecting device of a vacuum cleaner as set forth in claim 6, wherein,
the tip of the inclined portion is located at the same plane as the lower surface of the cover unit covering the upper portion of the dust collection chamber or at a position higher than the lower surface of the cover unit with the lower end of the upper support body as a reference.
9. A dust collecting device of a vacuum cleaner as set forth in claim 4, wherein,
The first member is formed to be inclined such that a contact surface with the air flowing into the dust collection space is directed to a lower side.
10. A dust collecting device of a vacuum cleaner as set forth in claim 4, wherein,
the first member is formed to have a smaller thickness from the upper support body side toward the outer side.
11. A dust collecting device of a vacuum cleaner as set forth in claim 4, wherein,
the first member is formed such that an upper end and a lower end are gathered in a center direction of the first member as they go outward from the upper support body side.
12. A dust collecting device of a vacuum cleaner as set forth in claim 4, wherein,
the second member is configured to be in vertical contact with the downdraft formed by the first member.
13. A dust collecting device of a vacuum cleaner as set forth in claim 4, wherein,
the second members are disposed in a region between each of the first members.
14. A dust collecting device of a vacuum cleaner as set forth in claim 4, wherein,
the cross section of the second member changes along the extending direction from the upper support body to the lower side.
15. A dust collecting device of a vacuum cleaner as set forth in claim 4, wherein,
the rotating unit further includes:
a lower support body formed to surround a lower portion of the filter member, the lower support body being connected to a plurality of the second members,
and the lower support body is separated from the lower part of the filter component by a prescribed interval,
the distance between the lower support body and the filter member is increased from the upper side of the lower support body to the lower side.
16. A dust collecting device of a vacuum cleaner as set forth in claim 1, further comprising:
an opening and closing door arranged at the lower part of the dust collection chamber and used for opening and closing the dust collection space,
the opening/closing door includes: and a guide protrusion protruding from a central portion of the opening/closing door, the guide protrusion being fixed by guiding a support member coupled to a lower portion of the filter member.
17. A dust collecting apparatus of a vacuum cleaner as set forth in claim 16, wherein,
the opening and closing door further includes:
a first seal ring provided inside the opening/closing door along an outer periphery of the guide protrusion, the first seal ring being in close contact with an end portion of the support member when the opening/closing door is closed; and
And a second sealing ring provided along the outer periphery on the outer side of the opening/closing door, wherein the second sealing ring is closely attached to the end of the dust collection chamber when the opening/closing door is closed.
18. A dust collecting apparatus of a vacuum cleaner as set forth in claim 16, wherein,
the bottom surface of the opening/closing door is formed to be inclined downward from the outer circumference toward the guide projection.
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR10-2020-0012835 | 2020-02-03 | ||
| KR1020200012835A KR102185964B1 (en) | 2020-02-03 | 2020-02-03 | Dust collector of vacuum cleaner |
| KR1020200161706A KR20220073540A (en) | 2020-11-26 | 2020-11-26 | Dust collector of vacuum cleaner |
| KR10-2020-0161706 | 2020-11-26 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113273925A CN113273925A (en) | 2021-08-20 |
| CN113273925B true CN113273925B (en) | 2023-12-29 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110126399.8A Active CN113273925B (en) | 2020-02-03 | 2021-01-29 | Dust collecting device of vacuum cleaner |
| CN202120260101.8U Active CN216724410U (en) | 2020-02-03 | 2021-01-29 | Dust collecting device of vacuum cleaner |
Family Applications After (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120260101.8U Active CN216724410U (en) | 2020-02-03 | 2021-01-29 | Dust collecting device of vacuum cleaner |
Country Status (2)
| Country | Link |
|---|---|
| CN (2) | CN113273925B (en) |
| WO (1) | WO2021158019A1 (en) |
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Also Published As
| Publication number | Publication date |
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| CN113273925A (en) | 2021-08-20 |
| WO2021158019A1 (en) | 2021-08-12 |
| CN216724410U (en) | 2022-06-14 |
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