Filter assembly structure and vacuum cleaner

Abstract

The present invention relates to a filter assembly structure and a vacuum cleaner, comprising: a filter; an assembly having an inner cavity, the assembly having an opening and an air flow hole connected to the inner cavity, a portion of the filter being sealed and assembled in the inner cavity from the opening, a sealed cavity being defined between the filter and the cavity wall of the inner cavity; an opening and closing member for opening and closing the air flow hole, the opening and closing member opening the air flow hole when the pressure in the sealed cavity is greater than the pressure in the external space, and closing the air flow hole when the pressure in the sealed cavity is less than the pressure in the external space; when the filter is subjected to a force that urges it to separate from the assembly, an air pressure difference is generated between the sealed cavity and the external space that urges the filter to be adsorbed on the assembly. When the filter is subjected to a force that urges it to separate from the assembly, the volume of the sealed cavity increases, and at this time, the pressure in the sealed cavity decreases, and an air pressure difference is generated between the sealed cavity and the external space that urges the filter to be adsorbed on the assembly, thereby making it difficult for the filter to separate from the assembly.

Description

Technical Field

[0001] The present invention relates to the technical field of dust removal equipment, and in particular to a filter element assembly structure and a dust collector. Background Art

[0002] With the development of economy and the progress of society, people are increasingly pursuing the quality of life. Among them, the cleanliness of the environment, as an important indicator for evaluating the quality of life, has received increasing attention. In order to improve the cleanliness of the environment, vacuum cleaners came into being.

[0003] The filter element (HEPA) plays the role of high-efficiency gas filtration in the vacuum cleaner. Generally, the vacuum cleaner includes two filter elements, one of which is installed between the cyclone separator and the gas power mechanism (motor) to filter the gas entering the gas power mechanism from the cyclone separator, and the other filter element is installed at the exhaust port of the vacuum cleaner to filter the gas discharged to the outside world.

[0004] Traditional filters are generally installed on vacuum cleaners using snaps, screws or threaded connections. The above methods require setting snaps or screws at the installation position of the filter, or using additional components (such as screws) to install the filter, resulting in a more complicated assembly structure. Summary of the Invention

[0005] Based on this, 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 address the problem that the traditional assembly structure is relatively complex.

[0006] A filter element assembly structure, comprising:

[0007] filter element;

[0008] An assembly having an inner cavity, the assembly having an opening and air flow holes communicating with the inner cavity, the filter element being sealably assembled within the inner cavity through the opening, and a sealed cavity being defined between the filter element and the cavity wall of the inner cavity;

[0009] an opening and closing member for opening and closing the air flow hole, wherein when the pressure in the sealed cavity is greater than the pressure in the external space, the opening and closing member opens the air flow hole, and when the pressure in the sealed cavity is less than the pressure in the external space, the opening and closing member closes the air flow hole;

[0010] When the filter element is subjected to a force that forces it to separate from the assembly part, an air pressure difference is generated between the sealed cavity and the external space, which forces the filter element to be adsorbed on the assembly part.

[0011] In one embodiment, a portion of the opening and closing member is fixedly connected to the assembly member, and the remaining portion of the opening and closing member can be elastically deformed relative to the assembly member to open or close the air flow hole.

[0012] In one embodiment, the opening and closing member includes a fixed section and deformable sections located at both ends of the fixed section, the fixed section is fixedly connected to the assembly part, and the deformable section can be elastically deformed relative to the assembly part to open or close the air flow hole.

[0013] In one embodiment, the air flow holes include a plurality of air flow holes that are spaced apart from each other, and each of the air flow holes is correspondingly provided with an opening and closing member.

[0014] In one embodiment, the opening and the air flow hole are respectively provided at two opposite ends of the assembly part.

[0015] In one embodiment, the inner cavity is an annular cavity, and a portion of the filter element is disposed in the inner cavity along the circumference of the inner cavity.

[0016] In one embodiment, a second airflow cavity is further provided in the assembly part, and the inner cavity surrounds the second airflow cavity;

[0017] The filter element includes a filter portion and an assembly portion that are interconnected. The filter portion is located in the second airflow cavity, and the assembly portion is assembled in the inner cavity. The airflow flowing in the second airflow cavity can exert a force on the filter element to cause it to separate from the assembly portion.

[0018] In one embodiment, the filter element includes a filter portion and an assembly portion, the assembly portion includes a connecting portion and a sealing portion, the connecting portion is connected to the filter portion, the sealing portion is covered on an end of the connecting portion away from the filter portion, and the filter element is sealed between the sealing portion and the cavity wall of the inner cavity.

[0019] In one embodiment, the filter element is interference fit with the cavity wall of the inner cavity.

[0020] A vacuum cleaner comprises the filter element assembly structure as described in any one of the above items.

[0021] In the above-mentioned filter assembly structure and vacuum cleaner, when the filter is subjected to a force that causes it to separate from the assembly part, the volume of the sealed cavity increases. At this time, the pressure in the sealed cavity decreases, and an air pressure difference is generated between the sealed cavity and the external space, which causes the filter to be adsorbed on the assembly part, thereby making it difficult for the filter to separate from the assembly part; and through the provision of the air flow holes and the opening and closing parts, the assembly of the filter can be facilitated and the pressure in the sealed cavity can be guaranteed not to be affected by the pressure of the external space. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 A cross-sectional view of a partial exploded view of a vacuum cleaner provided by one embodiment of the present invention;

[0023] Figure 2 for Figure 1 An enlarged view of point A of the vacuum cleaner shown in FIG;

[0024] Figure 3 for Figure 1 Assembly diagram of the vacuum cleaner shown in ;

[0025] Figure 4 for Figure 3 An enlarged view of point B of the vacuum cleaner shown in FIG;

[0026] Figure 5 for Figure 1 A structural diagram of the filter element of the vacuum cleaner shown in FIG;

[0027] Figure 6 for Figure 1 Partial assembly diagram of the vacuum cleaner shown in ;

[0028] Figure 7 for Figure 6 An enlarged view of point C of the vacuum cleaner shown in FIG;

[0029] Figure 8 A cross-sectional view of a vacuum cleaner provided in another embodiment of the present invention;

[0030] Figure 9 for Figure 8 An enlarged view of point D of the vacuum cleaner is shown.

[0031] Vacuum cleaner 200 filter assembly structure 100 filter element 10 filter portion 11 filter section 111 ventilation section 112 support frame 113 assembly portion 12 connection portion 121 sealing portion 122 assembly member 20 opening 21 second airflow cavity 22 body 23 extension portion 24 airflow hole 25 sealing cavity 30 opening and closing member 40 fixing section 41 deformation section 42 first airflow cavity 50 gas power mechanism 300 DETAILED DESCRIPTION

[0032] To facilitate understanding of the present invention, the present invention will be described more fully below with reference to the accompanying drawings. Preferred embodiments of the present invention are shown in the accompanying drawings. However, the present invention may be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to provide a more thorough and comprehensive understanding of the present disclosure.

[0033] It should be noted that when an element is referred to as being "fixed to" another element, it may be directly attached to the other element or there may be an intermediate element. When an element is referred to as being "connected to" another element, it may be directly connected to the other element or there may be an intermediate element. The terms "vertical," "horizontal," "left," "right," and similar expressions used herein are for illustrative purposes only.

[0034] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the art to which this invention pertains. The terms used in this specification of the present invention are for the purpose of describing specific embodiments only and are not intended to limit the present invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0035] See Figure 1 One embodiment of the present invention provides a vacuum cleaner 200 comprising a gas-powered mechanism 300 and a filter assembly structure 100. The gas-powered mechanism 300 drives airflow into the vacuum cleaner 200 for subsequent gas-dust separation. The filter assembly structure 100 includes a filter element 10 (described below) that can be used to filter dust carried in the gas flowing from a cyclone separator to the front end of the gas-powered mechanism 300 and / or to filter dust carried in the gas discharged from the rear end of the gas-powered mechanism 300.

[0036] The filter element assembly structure 100 includes a filter element 10 and an assembly part 20. As described above, the filter element 10 is used to filter dust carried in the gas flowing from the cyclone separator to the front end of the gas power mechanism 300, and / or filter dust carried in the gas discharged from the rear end of the gas power mechanism 300, and the assembly part 20 is used to assemble the filter element 10.

[0037] The following describes in detail the use of the filter element 10 for filtering dust carried in the gas discharged from the rear end of the gas power mechanism 300 as an example.

[0038] See Figure 2 The assembly part 20 has an inner cavity (not shown), and an opening 21 communicating with the inner cavity is formed on the assembly part 20. The filter element 10 is partially sealed and assembled in the inner cavity through the opening 21, and a sealed cavity 30 is defined between the filter element 10 and the cavity wall of the inner cavity (see Figure 3 and Figure 4 When the filter element 10 is subjected to a force that forces it to separate from the assembly 20 , an air pressure difference is generated between the sealed cavity 30 and the external space, which forces the filter element 10 to be adsorbed on the assembly 20 .

[0039] That is, when the filter element 10 is installed in the inner 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 forces it to separate from the assembly 20, the volume of the sealed cavity 30 increases, and the pressure in the sealed cavity 30 decreases. This creates an air pressure difference between the sealed cavity 30 and the external space that forces the filter element 10 to adhere to the assembly 20, making it difficult for the filter element 10 to separate from the assembly 20.

[0040] Through the above-mentioned setting method, the filter element 10 can be assembled by means of snap-on, screw-on or threaded connection, and the use of additional components can be avoided, so that the structure of the vacuum cleaner 200 is simpler; and the above-mentioned setting method combines the assembly and sealing of the filter element 10 together, and additional sealing components can be omitted, so that the structure of the vacuum cleaner 200 is further simplified.

[0041] See Figure 4 and Figure 5 The filter element 10 includes a filter portion 11 and an assembly portion 12. The assembly portion 12 includes a connecting portion 121 and a sealing portion 122. The connecting portion 121 is connected to the filter portion 11. The sealing portion 122 is covered on one end of the connecting portion 121 away from the filter portion 11. The filter element 10 is sealed between the sealing portion 122 and the cavity wall of the inner cavity.

[0042] Furthermore, in order to ensure that the filter element 10 and the assembly element 20 are firmly fixed and sealed, an interference fit is formed between the filter element 10 and the cavity wall of the inner cavity.

[0043] In one embodiment, the inner cavity is annular, and a portion of the filter element 10 is disposed within the inner cavity along the circumference of the sealed cavity 30. This arrangement allows for a larger space within the sealed cavity 30 defined between the filter element 10 and the inner cavity wall. When the filter element 10 is subjected to a force that forces it to separate from the assembly 20, a greater pressure differential is generated between the sealed cavity 30 and the outside world, further ensuring the secure attachment of the filter element 10 to the assembly 20.

[0044] See Figure 4 A second airflow cavity 22 is further defined within the assembly 20, with the inner cavity surrounding the second airflow cavity 22. The filter portion 11 is in communication with the second airflow cavity 22, and the airflow discharged from the rear end of the gas power mechanism 300 can enter the second airflow cavity 22, thereby exerting a force on the filter element 10 to increase the volume of the sealed cavity 30.

[0045] When the vacuum cleaner 200 is operating, the gas discharged from the rear end of the gas power mechanism 300 enters the second airflow chamber 22 and flows to the filter element 10 for filtration. When passing through the filter portion 11 of the filter element 10, the gas accumulates to a certain extent in the filter portion 11 due to the reduced flow area. The accumulated gas exerts a force on the filter element 10, causing the volume of the sealed cavity 30 to increase, thereby reducing the pressure within the sealed cavity 30 (at this time, the sealed cavity 30 is in a negative pressure state relative to the external space). This creates an air pressure difference between the sealed cavity 30 and the external space, causing the filter element 10 to be adsorbed onto the assembly 10. The greater the thrust exerted by the gas on the filter element 10, the greater the suction generated by the sealed cavity 30. When the thrust exerted by the gas on the filter element 10 is balanced with the suction generated within the sealed cavity 30, the filter element 10 is stably positioned, and the vacuum cleaner 200 is in a stable operating state.

[0046] Furthermore, filter element 11 includes a filter segment 111 and a ventilation segment 112, arranged sequentially along the airflow direction. Filter segment 111 is used to filter dust carried in the air, while ventilation segment 112 allows the filtered air to flow between the air and the outside world. A support frame 113 is connected between filter segment 111 and ventilation segment 112 to increase the strength of filter element 10 and prevent filter segment 111 from severely deforming and failing when subjected to airflow.

[0047] Continue reading Figure 2 In one embodiment, the assembly member 20 further defines an airflow hole 25 communicating with the inner cavity. The filter assembly structure 100 further includes an opening and closing member 40 for opening and closing the airflow hole 25. When the pressure within the sealed cavity 30 is greater than the pressure of the external space, the opening and closing member 40 opens the airflow hole 25. When the pressure within the sealed cavity 30 is less than the pressure of the external space, the opening and closing member 40 closes the airflow hole 25.

[0048] With this arrangement, the opening and closing member 40 functions as a one-way valve. That is, during the process of assembling the filter element 10 into the inner cavity, the volume of the sealed cavity 30 gradually decreases, while the internal pressure thereof gradually increases. When the pressure within the sealed cavity 30 exceeds the pressure of the external space, the opening and closing member 40 opens the airflow holes 25, allowing the gas within the sealed cavity 30 to be discharged to the outside, thereby balancing the pressure within the sealed cavity 30 with that of the external space, facilitating the assembly of the filter element 10. When the pressure of the external space exceeds the pressure within the sealed cavity 30, the opening and closing member 40 closes the airflow holes 25. Thus, the pressure within the sealed cavity 30 does not change due to changes in the pressure of the external space; its pressure is only related to changes in the volume of the sealed cavity 30.

[0049] It is conceivable that in some other embodiments, the provision of the air flow holes 25 and the opening and closing members 40 may be omitted. For example, when assembling the filter element 10, the inner cavity may be placed in a certain negative pressure state in advance so that the filter can be assembled in the inner cavity. When the filter element 10 is assembled in the inner cavity, the volume of the inner cavity is compressed, and the pressure in the sealed cavity 30 defined between the filter element 10 and the cavity wall of the inner cavity is equal to the pressure of the external space.

[0050] Specifically, the opening 21 and the air flow hole 25 are respectively provided at opposite ends of the assembly member 20. That is, the air flow hole 25 is provided on the bottom wall of the inner cavity, so that when the filter element 10 is assembled into the inner cavity through the opening 21, air is exhausted through the air flow hole 25. It is understood that in other embodiments, the air flow hole 25 may also be provided on the side wall of the inner cavity, which is not limited here.

[0051] See Figure 6 and Figure 7 In one embodiment, the opening and closing member 40 is disposed outside the air flow hole 25 for ease of installation. It is conceivable that in other embodiments, the opening and closing member 40 may also be disposed inside the air flow hole 25, which is not limited here.

[0052] Furthermore, the airflow holes 25 include a plurality of spaced-apart airflow holes, each of which is provided with an opening / closing member 40 to facilitate the discharge of gas from the sealed cavity 30. In other embodiments, the airflow holes 25 may include only one, with one opening / closing member 40 provided correspondingly; or, the airflow holes 25 may include a plurality of spaced-apart airflow holes, with at least one opening / closing member 40 provided; or, the airflow holes 25 may include a plurality of spaced-apart airflow holes, with each of the plurality of airflow holes 25 provided with one opening / closing member 40, which is not limited here.

[0053] In one embodiment, a portion of the opening and closing member 40 is fixedly connected to the assembly member 20, while the remaining portion is elastically deformable relative to the assembly member 20 to open or close the airflow hole 25. It is contemplated that in other embodiments, the opening and closing member 40 may be movably coupled to the assembly member 20 to facilitate operation to open or close the airflow hole 25, and this is not a limitation here.

[0054] See Figure 8 and Figure 9 In the first embodiment, one end of the opening and closing member 40 is fixedly connected to the assembly member 20 , and the other end is elastically deformed relative to the assembly member 20 to open or close the air flow hole 25 .

[0055] Furthermore, the assembly part 20 includes a main body 23 and an extension portion 24. The inner cavity, the opening 21 and the air flow hole 25 are all opened on the main body 23. The extension portion 24 is extended from the main body 23. The opening and closing member 40, the main body 23 and the extension portion 24 define a first air flow cavity 50 connected to the air flow hole 25. The opening and closing member 40 opens or closes the air flow hole 25 by opening or closing the first air flow cavity 50.

[0056] Optionally, the end of the opening and closing member 40 away from the body 23 extends in a direction away from the air flow hole 25 relative to the end connected to the body 23 , and the extending direction of the opening and closing member 40 is inclined relative to the axial direction of the air flow hole 25 .

[0057] With this arrangement, when the pressure inside the sealed cavity 30 is greater than the pressure of the external space, the opening and closing member 40 is easy to open, and when the pressure of the external space is greater than the pressure inside the sealed cavity 30, the opening and closing member 40 seals the air flow hole 25 more tightly.

[0058] Continue reading Figure 2 In the second embodiment, the opening and closing member 40 includes a fixed section 41 and a deformation section 42 located at both ends of the fixed section 41. The fixed section 41 is fixedly connected to the assembly part 20, and the deformation section 42 can be elastically deformed relative to the assembly part 20 to open or close the air flow hole 25.

[0059] An embodiment of the present invention further provides a filter assembly structure 100 included in the vacuum cleaner 200 .

[0060] The technical features of the above-mentioned embodiments can be combined arbitrarily. In order to make the description concise, not all possible combinations of the technical features in the above-mentioned embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0061] The above-described embodiments merely illustrate several implementations of the present invention, and while their descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent. It should be noted that a person skilled in the art would be able to make numerous variations and improvements without departing from the spirit of the present invention, all of which fall within the scope of protection of the present invention. Therefore, the scope of protection of the patent for this invention shall be determined by the appended claims.

Claims

1. A filter assembly structure, characterized in that: include: Filter element (10); An assembly part (20) having an inner cavity, the assembly part (20) being provided with an opening (21) and an air flow hole (25) communicating with the inner cavity, a portion of the filter element (10) being assembled in the inner cavity through the opening (21), and a sealed cavity (30) being defined between the filter element (10) and the cavity wall of the inner cavity; an opening and closing member (40) for opening and closing the airflow hole (25), wherein when the pressure in the sealed cavity (30) is greater than the pressure in the external space, the opening and closing member (40) opens the airflow hole (25), and when the pressure in the sealed cavity (30) is less than the pressure in the external space, the opening and closing member (40) closes the airflow hole (25); When the filter element (10) is subjected to a force that causes it to separate from the assembly part (20), an air pressure difference is generated between the sealed cavity (30) and the external space, causing the filter element (10) to be adsorbed on the assembly part (20).

2. The filter assembly structure according to claim 1, characterized in that: Part of the opening and closing member (40) is fixedly connected to the assembly member (20), and the remaining part of the opening and closing member (40) can be elastically deformed relative to the assembly member (20) to open or close the air flow hole (25).

3. The filter assembly structure according to claim 2, characterized in that: The opening and closing member (40) comprises a fixed section (41) and deformable sections (42) located at both ends of the fixed section (41); the fixed section (41) is fixedly connected to the assembly member (20); and the deformable section (42) can be elastically deformed relative to the assembly member (20) to open or close the air flow hole (25).

4. The filter element assembly structure according to claim 1, characterized in that: The air flow holes (25) include a plurality of air flow holes (25) arranged at intervals, and each air flow hole (25) is correspondingly provided with an opening and closing member (40).

5. The filter assembly structure according to claim 1, characterized in that: The opening (21) and the air flow hole (25) are respectively opened at two opposite ends of the assembly part (20).

6. The filter element assembly structure according to claim 1, characterized in that: The inner cavity is an annular cavity, and a portion of the filter element (10) is arranged in the inner cavity along the circumference of the inner cavity.

7. The filter element assembly structure according to claim 1, characterized in that: A second airflow cavity (22) is further provided in the assembly part (20), and the inner cavity surrounds the second airflow cavity (22); The filter element (10) comprises a filter portion (11) and an assembly portion (12) connected to each other, wherein the filter portion (11) is located in the second airflow cavity (22), and the assembly portion (12) is assembled in the inner cavity. The airflow flowing in the second airflow cavity (22) can exert a force on the filter element (10) to cause it to separate from the assembly portion (20).

8. The filter element assembly structure according to claim 1, characterized in that: The filter element (10) comprises a filter portion (11) and an assembly portion (12), the assembly portion (12) comprises a connecting portion and a sealing portion, the connecting portion is connected to the filter portion (11), the sealing portion is covered on an end of the connecting portion away from the filter portion (11), and the filter element (10) is sealed between the sealing portion and the cavity wall of the inner cavity.

9. The filter assembly structure according to claim 1, characterized in that: The filter element (10) is interference-fitted with the cavity wall of the inner cavity.

10. A vacuum cleaner, characterized in that: The filter assembly structure comprises the filter element assembly structure according to any one of claims 1 to 9.

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