阅读说明：本技术 过滤件装配结构及吸尘器 (Filter piece assembly structure and dust collector ) 是由 蔡木城 廖泓斌 王德旭 黄月林 李吉 任敏 王朝晖 李锦坤 颜勇 徐攀华 于 2019-12-03 设计创作，主要内容包括：本发明涉及一种过滤件装配结构及吸尘器,包括：过滤件；具有内腔的装配件,装配件上开设有与内腔连通的开口及气流孔,过滤件的部分从开口密封装配于内腔内,过滤件与内腔的腔壁之间界定形成密封腔；用于开合气流孔的开合件,当密封腔内压强大于外界空间的压强时,开合件打开气流孔,当密封腔内压强小于外界空间的压强时,开合件关闭气流孔；当过滤件受到促使其脱离装配件的作用力时,密封腔与外界空间之间产生促使过滤件吸附于装配件上的气压差。当过滤件受到促使其脱离装配件的作用力时,密封腔的体积增大,此时密封腔内的压强减少,密封腔与外界空间之间将产生促使过滤件吸附于装配件上的气压差,从而使过滤件不易从装配件上脱离。(The invention relates to a filter piece assembling structure and a dust collector, comprising: a filter member; the assembly part is provided with an opening and an airflow hole which are communicated with the inner cavity, the part of the filter element is assembled in the inner cavity from the opening in a sealing way, and a sealing cavity is defined between the filter element and the cavity wall of the inner cavity; the opening and closing piece is used for opening and closing the airflow hole, when the pressure intensity in the sealing cavity is higher than the pressure intensity of the external space, the airflow hole is opened by the opening and closing piece, and when the pressure intensity in the sealing cavity is lower than the pressure intensity of the external space, the airflow hole is closed by the opening and closing piece; when the filter element is acted by the force which can drive the filter element to be separated from the assembly element, the air pressure difference which can drive the filter element to be adsorbed on the assembly element is generated between the sealing cavity and the external space. When the filter element is subjected to the acting force which causes the filter element to be separated from the assembly element, the volume of the sealing cavity is increased, the pressure in the sealing cavity is reduced, and the air pressure difference which causes the filter element to be adsorbed on the assembly element is generated between the sealing cavity and the external space, so that the filter element is not easy to separate from the assembly element.)

1. A filter assembly structure, comprising:

a filter element (10);

the filter element assembly comprises an assembly part (20) with an inner cavity, wherein an opening (21) and an airflow hole (25) which are communicated with the inner cavity are formed in the assembly part (20), part of the filter element (10) is assembled in the inner cavity from the opening (21), and a sealed cavity (30) is defined between the filter element (10) and the wall of the inner cavity;

an opening member (40) for opening and closing the airflow hole (25), wherein the opening member (40) opens the airflow hole (25) when the pressure in the sealed cavity (30) is higher than the pressure in the external space, and the opening member (40) closes the airflow hole (25) when the pressure in the sealed cavity (30) is lower than the pressure in the external space;

when the filter element (10) is subjected to a force that urges it away from the fitting (20), a pressure differential is created between the sealed chamber (30) and the ambient space that urges the filter element (10) to adhere to the fitting (20).

2. The filter assembly structure according to claim 1, wherein a portion of the opening member (40) is fixedly connected to the fitting member (20), and a remaining portion of the opening member (40) is elastically deformable with respect to the fitting member (20) to open or close the airflow hole (25).

3. The filter mounting structure according to claim 2, wherein the opening member (40) includes a fixing section (41) and deformation sections (42) at both ends of the fixing section (41), the intermediate section is fixedly connected to the mounting member (20), and the deformation sections (42) are elastically deformable with respect to the mounting member (20) to open or close the airflow holes (25).

4. The filter assembly structure according to claim 1, wherein the air flow hole (25) includes a plurality of spaced apart openings, and one of the opening elements (40) is disposed at each of the air flow holes (25).

5. The filter mounting structure according to claim 1, wherein the opening (21) and the airflow hole (25) are opened at opposite ends of the mounting member (20), respectively.

6. The filter assembly structure according to claim 1, wherein the internal cavity is an annular cavity, and the portion of the filter member (10) is provided in the internal cavity along a circumferential direction of the internal cavity.

7. The filter assembly structure according to claim 1, wherein the assembly member (20) further defines a second airflow chamber (22) therein, and the inner chamber surrounds the second airflow chamber (22);

the filter element (10) comprises a filter portion (11) and a mounting portion (12) which are connected to each other, the filter portion (11) is located in the second airflow chamber (22), the mounting portion (12) is mounted in the inner chamber, and the airflow flowing in the second airflow chamber (22) can exert a force on the filter element (10) to separate the filter element from the mounting portion (20).

8. The filter element assembly structure according to claim 1, wherein the filter element (10) includes a filter portion (11) and an assembly portion (12), the assembly portion (12) includes a connecting portion and a sealing portion, the connecting portion is connected to the filter portion (11), the sealing portion covers an end of the connecting portion away from the filter portion (11), and the filter element (10) is sealed with a wall of the inner cavity by the sealing portion.

9. A filter assembly according to claim 1, wherein the filter element (10) is in interference fit with the wall of the internal cavity.

10. A vacuum cleaner including a filter assembly according to any one of claims 1 to 9.

Technical Field

The invention relates to the technical field of dust removing equipment, in particular to a filter piece assembling structure and a dust collector.

Background

With the development of economy and the progress of society, people are pursuing quality of life more and more, and the cleanness of the environment is receiving increasing attention as an important index for evaluating the quality of life. In order to improve the cleanliness of the environment, dust collectors have come into use.

A filter (HEPA) plays a role in efficiently filtering air in a vacuum cleaner, and generally, a vacuum cleaner includes two filter elements, one of which is installed between a cyclone separator and a gas power mechanism (motor) and is used for filtering air entering the gas power mechanism from the cyclone separator, and the other of which is installed at an exhaust port of the vacuum cleaner and is used for filtering air exhausted to the outside from the vacuum cleaner.

The traditional filter element is generally mounted on the dust collector in a buckling, screwing or threaded connection mode, and the buckling and screwing are required to be arranged at the mounting position of the filter element or an additional component (such as a screw) is adopted for mounting the filter element, so that the assembly structure is complex.

Disclosure of Invention

In view of the above, it is necessary to provide a filter assembly structure and a vacuum cleaner that can reduce the complexity of the assembly structure, in order to solve the problem of the conventional assembly structure that is complicated.

A filter assembly structure comprising:

a filter member;

the assembly part is provided with an inner cavity, an opening and an airflow hole which are communicated with the inner cavity are formed in the assembly part, part of the filter element is assembled in the inner cavity from the opening in a sealing way, and a sealing cavity is defined between the filter element and the wall of the inner cavity;

the opening and closing piece is used for opening and closing the airflow hole, when the pressure in the sealing cavity is higher than the pressure in the external space, the opening and closing piece opens the airflow hole, and when the pressure in the sealing cavity is lower than the pressure in the external space, the opening and closing piece closes the airflow hole;

when the filter element is subjected to a force which urges the filter element away from the fitting, a pressure differential is created between the sealed cavity and the ambient space which urges the filter element to adhere to the fitting.

In one embodiment, a part of the opening piece is fixedly connected with the assembly piece, and the rest part of the opening piece can be elastically deformed relative to the assembly piece to open or close the airflow hole.

In one embodiment, the opening and closing piece comprises a fixed section and deformation sections positioned at two ends of the fixed section, the middle section is fixedly connected with the assembly piece, and the deformation sections can elastically deform relative to the assembly piece to open or close the air flow holes.

In one embodiment, the airflow holes comprise a plurality of spaced apart airflow holes, and each airflow hole is provided with one corresponding opening piece.

In one embodiment, the opening and the airflow hole are respectively opened at two ends opposite to the assembly member.

In one embodiment, the internal cavity is an annular cavity, and the filter element is partially disposed in the internal cavity along a circumferential direction of the internal cavity.

In one embodiment, the assembly member further defines a second airflow chamber therein, and the inner chamber surrounds the second airflow chamber;

the filter element comprises a filter part and an assembling part which are connected with each other, the filter part is positioned in the second airflow cavity, the assembling part is assembled in the inner cavity, and the airflow flowing in the second airflow cavity can be applied to the acting force of the filter element to cause the filter element to be separated from the assembling part.

In one embodiment, the filter element includes a filter portion and an assembling portion, the assembling portion includes a connecting portion and a sealing portion, the connecting portion is connected to the filter portion, the sealing portion covers an end of the connecting portion away from the filter portion, and the filter element is sealed with a cavity wall of the inner cavity through the sealing portion.

In one embodiment, the filter element has an interference fit with the wall of the internal cavity.

A vacuum cleaner comprising a filter assembly according to any one of the preceding claims.

According to the filter piece assembly structure and the dust collector, when the filter piece is subjected to the acting force which causes the filter piece to be separated from the assembly piece, the volume of the sealing cavity is increased, the pressure intensity in the sealing cavity is reduced at the moment, and the air pressure difference which causes the filter piece to be adsorbed on the assembly piece is generated between the sealing cavity and the external space, so that the filter piece is not easy to separate from the assembly piece; and through the arrangement of the airflow hole and the opening and closing piece, the assembly of the filtering piece can be facilitated, and the pressure in the sealing cavity is not influenced by the pressure of the external space.

Drawings

FIG. 1 is a cross-sectional view of a partially exploded view of a vacuum cleaner in accordance with an embodiment of the present invention;

FIG. 2 is an enlarged view of the vacuum cleaner shown in FIG. 1 at A;

FIG. 3 is an assembly view of the vacuum cleaner shown in FIG. 1;

FIG. 4 is an enlarged view of the vacuum cleaner shown in FIG. 3 at B;

FIG. 5 is a block diagram of a filter element of the vacuum cleaner shown in FIG. 1;

FIG. 6 is a partial assembly view of the vacuum cleaner shown in FIG. 1;

FIG. 7 is an enlarged view of the vacuum cleaner shown in FIG. 6 at C;

FIG. 8 is a cross-sectional view of a vacuum cleaner according to another embodiment of the present invention;

figure 9 is an enlarged view of the cleaner of figure 8 at D.

Filter assembly structure 100 for vacuum cleaner 100, sealing part 122 assembly 20, opening 21, second airflow chamber 22, body 23, extension 24 airflow hole 25, sealing chamber 30, opening 40, fixing section 41, deformation section 42, first airflow chamber 50, and pneumatic mechanism 300 for vacuum cleaner 100, sealing part 122, assembly 12, assembly part 12, sealing part 113, assembly part 12, assembly part 11, ventilation section 111, and assembly part 112

Detailed Description

To facilitate an understanding of the invention, the invention will now be described more fully with reference to the accompanying drawings. Preferred embodiments of the present invention are shown in the drawings. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.

It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. 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. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

Referring to fig. 1, an embodiment of the invention provides a vacuum cleaner 200, which includes a pneumatic mechanism 300 and a filter assembly 100, wherein the pneumatic mechanism 300 drives an airflow into the vacuum cleaner 200 for subsequent air-dust separation. The filter element 10 (described below) included in the filter assembly 100 may be used to filter dust carried in air flowing from the cyclone to the front end of the aerodynamic mechanism 300 and/or to filter dust carried in air flowing from the rear end of the aerodynamic mechanism 300.

The filter assembly structure 100 includes the filter member 10 for filtering dust carried in the gas flowing from the cyclone to the front end of the aerodynamic mechanism 300 and/or filtering dust carried in the gas exhausted from the rear end of the aerodynamic mechanism 300, and the assembly 20 for assembling the filter member 10, as described above.

The following description will be made in detail by taking as an example the filter 10 for filtering dust carried in the gas discharged from the rear end of the gas actuating unit 300.

Referring to fig. 2, the assembly member 20 has an inner cavity (not shown), the assembly member 20 further has an opening 21 communicating with the inner cavity, a portion of the filter element 10 is sealingly assembled in the inner cavity through the opening 21, and a sealed cavity 30 is defined between the filter element 10 and a wall of the inner cavity (see fig. 3 and 4). When the filter element 10 is subjected to a force that urges it away from the fitting 20, a pressure differential is created between the sealed chamber 30 and the ambient space that urges the filter element 10 to adhere to the fitting 20.

That is, when the filter member 10 is fitted in the internal cavity, the pressure in the sealed cavity 30 is equal to the pressure in the external space. When the filter element 10 is subjected to a force that urges it to disengage from the fitting 20, the volume of the sealed chamber 30 increases, the pressure in the sealed chamber 30 decreases, and a pressure difference is generated between the sealed chamber 30 and the external space that urges the filter element 10 to adhere to the fitting 20, so that the filter element 10 is not easily disengaged from the fitting 20.

Through the arrangement mode, the filter piece 10 is prevented from being assembled in a buckling, screwing or threaded connection mode, and additional parts are avoided, so that the dust collector 200 is simple in structure; in addition, the above arrangement can omit extra sealing parts by combining the assembly and sealing of the filter elements 10, thereby further simplifying the structure of the vacuum cleaner 200.

Referring to fig. 4 and 5, the filter element 10 includes a filtering portion 11 and an assembling portion 12, the assembling portion 12 includes a connecting portion 121 and a sealing portion 122, the connecting portion 121 is connected to the filtering portion 11, the sealing portion 122 covers an end of the connecting portion 121 far away from the filtering portion 11, and the filter element 10 is sealed with a cavity wall of the inner cavity by the sealing portion 122.

Further, in order to ensure that the filter element 10 is firmly fixed to the assembly member 20 and the sealing performance is ensured, the filter element 10 is in interference fit with the wall of the inner cavity.

In one embodiment, the interior cavity is an annular cavity, and portions of the filter element 10 are disposed within the interior cavity along the circumference of the seal cavity 30. With such an arrangement, the space of the sealed cavity 30 defined between the filter element 10 and the wall of the inner cavity can be relatively large, and when the filter element 10 is subjected to an acting force which causes the filter element to be separated from the assembly member 20, the air pressure difference generated between the sealed cavity 30 and the external space is relatively large, so as to further ensure the firmness of fixing the filter element 10 on the assembly member 20.

Referring to fig. 4, a second airflow chamber 22 is further defined in the assembly member 20, and the inner chamber is enclosed by the second airflow chamber 22. Filter portion 11 communicates with second airflow chamber 22 and the airflow exiting the rear end of gaseous actuating mechanism 300 may enter second airflow chamber 22 to exert a force on filter element 10 to increase the volume of sealed chamber 30.

When the vacuum cleaner 200 is in operation, the air discharged from the rear end of the air force mechanism 300 can enter the second airflow chamber 22 and flow to the filter member 10 for filtering. When passing through the filter portion 11 of the filter element 10, the gas will accumulate to some extent in the filter portion 11 due to the reduced flow area. The accumulated gas exerts a force on the filter element 10, which increases the volume of the capsule 30, thereby reducing the pressure in the capsule 30 (the capsule 30 is in a negative pressure state with respect to the external space), and a pressure difference is generated between the capsule 30 and the external space, so that the filter element 10 is attracted to the mounting element 10. When the thrust of the gas applied to the filter element 10 is greater and the suction force generated in the sealed chamber 30 is greater, the thrust exerted by the gas on the filter element 10 is balanced with the suction force generated in the sealed chamber 30, the filter element 10 will be stably positioned, and the dust collector 200 will be in a stable working state.

Further, the filtering portion 11 includes a filtering section 111 and a ventilating section 112 sequentially arranged along the flowing direction of the airflow, the filtering section 111 is used for filtering dust carried in the air, and the ventilating section 112 is used for circulating the filtered air and the outside. A support frame 113 is connected between the filter segment 111 and the ventilation segment 112 to increase the strength of the filter element 10 and prevent the filter segment 111 from being seriously deformed and failing when subjected to the airflow.

With continued reference to fig. 2, in an embodiment, the assembly member 20 further defines an airflow hole 25 communicating with the inner cavity, and the filter assembly structure 100 further includes an opening member 40, wherein the opening member 40 is used for opening or closing the airflow hole 25. The opening and closing member 40 opens the airflow hole 25 when the pressure in the sealing chamber 30 is higher than the pressure in the external space, and closes the airflow hole 25 when the pressure in the sealing chamber 30 is lower than the pressure in the external space.

With such an arrangement, the opening and closing member 40 functions as a one-way valve, that is, in the process of assembling the filtering member 10 in the inner cavity, the volume of the sealing cavity 30 gradually decreases, the internal pressure thereof gradually increases, and when the internal pressure of the sealing cavity 30 is higher than the pressure of the external space, the opening and closing member 40 opens the airflow hole 25, so that the gas in the sealing cavity 30 is discharged to the outside, the internal pressure of the sealing cavity 30 is balanced with the external space, and the assembly of the filtering member 10 is facilitated. When the pressure in the external space is higher than the pressure in the sealing chamber 30, the opening member 40 closes the air flow hole 25, so that the pressure in the sealing chamber 30 does not change due to the pressure change in the external space, which is only related to the volume change of the sealing chamber 30.

It is contemplated that in other embodiments, the air flow holes 25 and the opening element 40 may be omitted, for example, when the filter element 10 is assembled, the inner cavity may be in a certain negative pressure state in advance, so that the filter element will be assembled in the inner cavity, and when the filter element 10 is assembled in the inner cavity, the pressure in the sealed cavity 30 defined between the filter element 10 and the wall of the inner cavity is equal to the pressure in the external space due to the volume of the inner cavity being compressed.

Specifically, the opening 21 and the air flow hole 25 are opened at opposite ends of the fitting 20, respectively, that is, the air flow hole 25 is opened at the bottom wall of the inner cavity, so that the air is discharged from the air flow hole 25 when the filter member 10 is fitted to the inner cavity from the opening 21. It is understood that in other embodiments, the airflow hole 25 may be opened on a side wall of the inner cavity, and is not limited thereto.

Referring to fig. 6 and 7, in one embodiment, the opening element 40 is disposed outside the airflow hole 25 for easy installation. It is contemplated that in other embodiments, the opening member 40 may be disposed within the airflow aperture 25, and is not limited thereto.

Further, the gas flow holes 25 include a plurality of gas flow holes spaced apart from each other, and each of the gas flow holes 25 is provided with an opening 40 corresponding thereto to facilitate the discharge of the gas in the sealing chamber 30. In other embodiments, the airflow hole 25 may include only one, and the opening element 40 is correspondingly provided with one; alternatively, the airflow hole 25 may include a plurality of openings spaced apart from each other, and one opening 40 may be provided; alternatively, the airflow holes 25 may include a plurality of openings spaced apart from each other, and the opening-closing member 40 is disposed in correspondence to a plurality of all the airflow holes 25, which is not limited herein.

In one embodiment, a portion of the opening member 40 is fixedly coupled to the fitting 20, and the remaining portion is elastically deformable with respect to the fitting 20 to open or close the airflow hole 25. It is contemplated that in other embodiments, the opening member 40 may be movably coupled to the mounting member 20 to facilitate opening or closing the airflow opening 25, and is not limited herein.

Referring to fig. 8 and 9, in the first embodiment, one end of the opening unit 40 is fixedly connected to the fitting unit 20, and the other end is elastically deformed with respect to the fitting unit 20 to open or close the airflow hole 25.

Further, the assembly member 20 includes a body 23 and an extension portion 24, the inner cavity, the opening 21 and the airflow hole 25 are all opened on the body 23, the extension portion 24 is extended to the body 23, a first airflow cavity 50 communicated with the airflow hole 25 is defined among the opening member 40, the body 23 and the extension portion 24, and the opening member 40 opens or closes the airflow hole 25 by opening or closing the first airflow cavity 50.

Alternatively, an end of the opening piece 40 away from the body 23 extends toward a direction away from the airflow hole 25 with respect to an end thereof connected to the body 23, and the extending direction of the opening piece 40 is disposed obliquely with respect to the axial direction of the airflow hole 25.

With this arrangement, the opening and closing member 40 is easily opened when the pressure in the sealing chamber 30 is higher than the pressure in the external space, and the opening and closing member 40 has a stronger sealing property for sealing the airflow hole 25 when the pressure in the external space is higher than the pressure in the sealing chamber 30.

With continued reference to fig. 2, in the second embodiment, the opening element 40 includes a fixed segment 41 and a deformable segment 42 at two ends of the fixed segment 41, the fixed segment 41 is fixedly connected to the assembly member 20, and the deformable segment 42 is elastically deformable relative to the assembly member 20 to open or close the airflow hole 25.

An embodiment of the present invention further provides a filter assembly structure 100 included in the vacuum cleaner 200.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.