A separation filter structure and a vacuum cleaner thereof

Abstract

The application discloses a separating and filtering structure and a dust collector thereof. The separating and filtering structure comprises a shell, a filter core, a filter screen and an outer cover. The filter core and the filter screen are fixedly installed on the mounting end of the shell, and the filter screen is sleeved outside the filter core. The outer cover is movably installed on the mounting end of the shell and is sleeved outside the filter screen. When air suction and dust collection are performed, the outer cover is moved to a first position along the direction towards the mounting end of the shell. When air blowing and self-cleaning are performed, the outer cover is moved to a second position along the direction away from the mounting end of the shell, so as to scrape off the dust on the outer wall surface of at least part of the filter screen. In this way, when air suction and dust collection are performed, the air passes through the filter screen and the filter core in sequence, so that the dust is separated on the filter screen and the filter core. When air blowing and self-cleaning are performed, the outer cover is moved to the second position along the direction towards the second end, so as to scrape off the dust on the outer wall surface of at least part of the filter screen, thereby avoiding the accumulation of dust on the separating and filtering structure, and improving the cleaning efficiency and the user experience.

Description

Technical Field

[0001] This invention relates to the field of vacuuming technology, and more particularly to a separation filter structure and a vacuum cleaner thereof. Background Technology

[0002] Most vacuum cleaners on the market use a detachable filter structure for filtration. In vacuuming mode, the suction draws air through the detachable filter to separate dust and debris. In self-cleaning mode, the air blows the dust and debris off the detachable filter. However, with traditional vacuum cleaners, dust adheres to the outer wall of the filter screen in vacuuming mode. In self-cleaning mode, air only exits through the filter holes, causing dust to accumulate on the outer wall of the filter screen, potentially clogging the filter holes and resulting in a poor user experience. Summary of the Invention

[0003] In order to overcome at least one of the defects described in the prior art, the present invention provides a separation filter structure and a vacuum cleaner thereof to solve the problem that dust adhering to the outer wall surface of the filter screen of the existing separation filter structure will accumulate and even block the filter holes in severe cases.

[0004] The present invention provides a technical solution to address its problems. In a first aspect, an embodiment of the present invention discloses a separation filter structure, including a housing and a filter element, a filter screen, and an outer cover located within the housing. The filter element and the filter screen are fixedly installed on the mounting end of the housing, with the filter screen sleeved over the filter element. The outer cover is movably installed on the mounting end of the housing and sleeved over the filter screen. During dust extraction, the outer cover moves to a first position in the direction toward the mounting end of the housing. During self-cleaning, the outer cover moves to a second position in the direction away from the mounting end of the housing to scrape away at least a portion of the dust on the outer wall surface of the filter screen.

[0005] As an optional implementation, in an embodiment of the first aspect of the invention, a scraper is provided on the inner wall surface of the outer cover facing the filter screen, the scraper being used to scrape dust off the filter screen when the outer cover moves to a second position in a direction away from the mounting end of the outer shell.

[0006] As an optional implementation, in an embodiment of the first aspect of the present invention, the filter screen is provided with a first filter hole, and the outer cover extends along the mounting end away from the outer shell and is provided with a second filter hole.

[0007] As an optional implementation, in an embodiment of the first aspect of the present invention, the area of ​​the second filter hole is larger than the area of ​​the first filter hole.

[0008] As an optional implementation, in an embodiment of the first aspect of the present invention, the mounting end of the housing is provided with an air inlet, and the separation filter structure further includes an end cap, the end cap covering the end of the filter element and the filter screen away from the mounting end of the housing, the end cap being provided with an air outlet, and the air inlet, the filter element and the air outlet being sequentially connected to form a first airflow channel for self-cleaning by blowing air.

[0009] As an optional implementation, in an embodiment of the first aspect of the present invention, the end of the outer cover near the mounting end of the outer shell is bent outward to form a baffle. When the outer cover is in the first position, the baffle closes the air inlet. During self-cleaning by blowing air, the baffle moves under the action of the airflow to drive the outer cover from the first position to the second position.

[0010] As an optional implementation, in an embodiment of the first aspect of the present invention, the outer shell has a first limiting portion and a second limiting portion formed at intervals, the baffle is located between the first limiting portion and the second limiting portion, the first limiting portion is used to limit the baffle when the outer shell moves to the first position, and the second limiting portion is used to limit the baffle when the outer shell moves to the second position.

[0011] As an optional implementation, in an embodiment of the first aspect of the present invention, the outer casing includes a cover and a housing with an opening, the cover sealing the opening of the housing, the filter element and the filter screen being fixedly installed on the cover, the air inlet and the first limiting portion being disposed on the cover, and the second limiting portion being disposed on the housing.

[0012] As an optional implementation, in an embodiment of the first aspect of the present invention, the separation and filtering structure further includes a reset spring, a third limiting part is provided inside the housing, the reset spring is sleeved outside the outer cover, one end of the reset spring abuts against the third limiting part and the other end abuts against the baffle.

[0013] As an optional implementation, in an embodiment of the first aspect of the present invention, the end of the outer cover away from the mounting end of the outer shell is bent inward to form a bent plate whose shape is adapted to the end cover. When the outer cover is moved to the first position, the bent plate closes the air outlet. When the outer cover is moved to the second position, the bent plate opens the air outlet.

[0014] As an optional implementation, in an embodiment of the first aspect of the present invention, when the outer cover is moved to the second position, a second airflow channel is formed between the outer cover and the filter screen, and when the outer cover is moved to the first position, the second airflow channel is blocked.

[0015] As an optional implementation, in an embodiment of the first aspect of the present invention, the separation filter structure further includes an end cap that covers the end of the filter element and the filter screen that is away from the mounting end of the housing. The region of the outer cover that is away from the mounting end of the housing is bent outward and forms a gap with the filter screen. The mounting end of the outer cover that is away from the housing is provided with a bending plate whose shape is adapted to the end cap. When the outer cover is moved to the second position, a second airflow channel is formed between the outer cover and the filter screen. When the outer cover is moved to the first position, the bending plate of the outer cover partially fits against the end cap to block the second airflow channel.

[0016] Secondly, embodiments of the present invention disclose a vacuum cleaner, including a vacuum cleaner body and a separation filter structure as described above, wherein the separation filter structure is disposed on the vacuum cleaner body.

[0017] Implementing the embodiments of the present invention will have the following beneficial effects:

[0018] This invention employs a separate filtration structure comprising a housing and a filter element, a filter screen, and an outer cover located within the housing. The filter element and filter screen are fixedly mounted on the mounting end of the housing, with the filter screen covering the filter element. The outer cover is movably mounted on the mounting end of the housing and covers the filter screen. During vacuuming, the outer cover moves to a first position towards the mounting end of the housing. During self-cleaning, the outer cover moves to a second position away from the mounting end of the housing to scrape away at least a portion of the dust from the outer surface of the filter screen. With this design, during vacuuming, the outer cover moves to the first position towards the mounting end of the housing, allowing air to pass sequentially through the filter screen and filter element, thus separating dust onto them. During self-cleaning, the outer cover moves to the second position towards the second end to scrape away at least a portion of the dust from the outer surface of the filter screen, preventing dust accumulation on the separate filtration structure and thereby improving cleaning efficiency and enhancing the user experience. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a schematic diagram of the separation and filtration structure in an embodiment of the present invention;

[0021] Figure 2 This is a cross-sectional view of the outer cover of the separation filter structure in an embodiment of the present invention, moved to a first position.

[0022] Figure 3 This is a cross-sectional view of the outer cover of the separation filter structure in an embodiment of the present invention moved to the second position. Figure 1 ;

[0023] Figure 4 This is a cross-sectional view of the outer cover of the separation filter structure in an embodiment of the present invention moved to the second position. Figure 2 ;

[0024] Figure 5 for Figure 4 Enlarged diagram of point A in the middle.

[0025] The meanings of the reference numerals in the attached figures are as follows:

[0026] 1-Outer shell; 11-Shell cover; 111-Air inlet; 112-First limiting part; 12-Shell shell; 121-Second limiting part; 2-Filter element; 3-Filter screen; 31-First filter hole; 4-Outer cover; 41-Second filter hole; 42-Baffle; 43-Scraper; 44-Bending plate; 5-End cover; 51-Air outlet; 6-Reset spring. Detailed Implementation

[0027] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0028] In this invention, the terms "upper," "lower," "left," "right," "front," "rear," "top," "bottom," "inner," "outer," "middle," "vertical," "horizontal," "lateral," and "longitudinal" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. These terms are primarily for the purpose of better describing the invention and its embodiments, and are not intended to limit the indicated devices, elements, or components to having a specific orientation, or to be constructed and operated in a specific orientation.

[0029] Furthermore, in addition to indicating direction or positional relationship, some of the aforementioned terms may also have other meanings. For example, the term "above" may also be used in certain situations to indicate a dependency or connection. Those skilled in the art can understand the specific meaning of these terms in this invention based on the specific circumstances.

[0030] Furthermore, the terms "installation," "setup," "equipped with," "connection," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral structure; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium, or an internal connection between two devices, components, or parts. Those skilled in the art can understand the specific meaning of these terms in this invention based on the specific circumstances.

[0031] Furthermore, the terms "first," "second," etc., are primarily used to distinguish different devices, elements, or components (which may be the same or different in specific type and construction), and are not intended to indicate or imply the relative importance or quantity of the indicated devices, elements, or components. Unless otherwise stated, "a plurality of" means two or more.

[0032] The technical solution of the present invention will be further described below with reference to the embodiments and accompanying drawings.

[0033] Please refer to the following: Figures 1 to 5 This invention discloses a vacuum cleaner, including a vacuum cleaner body (not shown) and a separate filter structure disposed on the vacuum cleaner body. The separate filter structure includes a housing 1 and a filter element 2, a filter screen 3, and an outer cover 4 located within the housing 1. The filter element 2 and the filter screen 3 are fixedly installed on the mounting end of the housing 1, with the filter screen 3 covering the filter element 2. The outer cover 4 is movably installed on the mounting end of the housing 1 and covers the filter screen 3. During vacuuming, the outer cover 4 moves to a first position (e.g., ...) in the direction towards the mounting end of the housing 1. Figure 2 As shown), during self-cleaning by blowing air, the outer cover 4 moves to the second position in the direction away from the mounting end of the outer casing 1 (as shown). Figure 3 As shown), the outer cover 4 moves to a first position along the direction towards the mounting end of the outer casing 1 during dust extraction, so that the air passes through the filter screen 3 and the filter element 2 in sequence, causing the dust to separate on the filter screen 3 and the filter element 2. During self-cleaning, the outer cover 4 moves to a second position along the direction towards the second end to scrape away at least a portion of the dust on the outer wall of the filter screen 3, preventing dust from accumulating on the separation filter structure, thereby improving cleaning efficiency and enhancing the user experience.

[0034] Furthermore, a scraper 43 is provided on the inner wall surface of the outer cover 4 facing the filter screen 3. The scraper 43 is used to scrape off the dust on the filter screen 3 when the outer cover 4 moves to the second position in the direction away from the mounting end of the outer casing 1. With this design, the scraper 43 can further improve the dust removal effect on the outer wall surface of the filter screen 3, thereby further improving the self-cleaning effect of the separation filter structure.

[0035] In some embodiments, considering that linear debris such as hair easily gets tangled on the outer wall of the separation filter structure in vacuuming mode, and that the separation effect is affected by the tangled hair in self-cleaning mode, or even the mesh on the separation filter structure is blocked, the filter screen 3 is provided with a first filter hole 31, and the outer cover 4 extends along the direction away from the mounting end of the outer shell 1 and is provided with a second filter hole 41. With this design, when vacuuming, some hair gets tangled on the outer cover 4, and some passes through the second filter hole 41 and gets tangled on the filter screen 3; when self-cleaning, as the outer cover 4 moves to the second position, it can pull the hair, so that the hair moves relative to the filter screen 3, which helps to remove the hair and other debris tangled on the filter screen 3 and the outer cover 4, and thus helps the hair fall off.

[0036] The outer cover 4 covers at least part of the first filter hole 31. It is understood that in other embodiments, the outer cover 4 may not cover the first filter hole 31, and this is not limited here.

[0037] Furthermore, the area of ​​the second filter hole 41 is larger than the area of ​​the first filter hole 31. With this design, larger pieces of trash can be intercepted outside the outer cover 4, while medium-sized pieces of trash can be intercepted outside the filter screen 3.

[0038] Specifically, both the first filter hole 31 and the second filter hole 41 are circular holes. The diameter of the first filter hole 31 is less than 0.5 mm, and the diameter of the second filter hole 41 is greater than 0.5 mm. The diameter of the first filter hole 31 can be 0.45 mm, 0.4 mm, 0.35 mm, etc., and a suitable diameter can be selected according to the actual situation during design; it is not limited here. The diameter of the second filter hole 41 can be 0.55 mm, 0.6 mm, 0.65 mm, etc., and a suitable diameter can be selected according to the actual situation during design; it is not limited here. Furthermore, the first filter hole 31 and the second filter hole 41 can also be elongated holes, etc., and this is not limited here.

[0039] In some embodiments, to achieve self-cleaning of the separation filter structure, the mounting end of the housing 1 is provided with an air inlet 111. The separation filter structure also includes an end cap 5, which covers the ends of the filter element 2 and the filter screen 3 away from the mounting end of the housing 1. The end cap 5 is provided with an air outlet 51. The air inlet 111, the filter element 2, and the air outlet 51 are connected in sequence to form a first airflow channel for self-cleaning by blowing air (e.g., Figure 3 (As shown in X1). With this design, during self-cleaning, the air flows along the first airflow channel, that is, it enters the filter element 2 from the air inlet 111 to carry away the dust on the filter element 2, and is blown out from the air outlet 51 to discharge the dust.

[0040] In some embodiments, the end of the outer cover 4 near the mounting end of the outer shell 1 is bent outward to form a baffle 42. When the outer cover 4 is in the first position, the baffle 42 closes the air inlet 111. During self-cleaning, the baffle 42 moves under the action of the airflow to move the outer cover 4 from the first position to the second position. With this design, on the one hand, when vacuuming, the baffle 42 closes the air inlet 111, that is, closes the first airflow channel, thereby preventing dust from entering the air inlet 111 during vacuuming; on the other hand, during self-cleaning, the baffle 42 moves under the action of the airflow, and the air enters the filter element 2 from the air inlet 111 and is discharged through the air outlet 51, taking away the dust on the filter element 2; furthermore, the movement of the outer cover 4 can be achieved under the action of the airflow, which is simple in structure and convenient to use.

[0041] Furthermore, in order to prevent the outer cover 4 from dislodging from the first or second position when it moves back and forth between the first and second positions, the outer shell 1 is provided with a first limiting part 112 and a second limiting part 121 spaced apart. The first limiting part 112 is used to limit the baffle 42 when the outer cover 4 moves to the first position, and the second limiting part 121 is used to limit the baffle 42 when the outer cover 4 moves to the second position, so that the outer cover 4 moves only between the first and second positions.

[0042] Furthermore, the outer casing 1 includes a casing cover 11 and a casing 12 with an opening. The casing cover 11 seals the opening of the casing 12. The filter element 2 and the filter screen 3 are fixedly installed on the casing cover 11. The air inlet 111 and the first limiting part 112 are provided on the casing cover 11, and the second limiting part 121 is provided on the casing 12.

[0043] In some embodiments, considering that the outer cover 4 is driven to the second position by airflow, in order for the outer cover 4 to return from the second position to the first position, the separation filter structure also includes a return spring 6. A third limiting part (not shown) is provided inside the outer shell 1. The return spring 6 is sleeved on the outer cover 4, with one end abutting against the third limiting part and the other end abutting against the baffle 42. With this design, when the outer cover 4 moves from the first position to the second position, the baffle 42 compresses the return spring 6, allowing the outer cover 4 to move. When the outer cover 4 moves from the second position to the first position, the return spring 6 extends and retracts to push the baffle 42, and the baffle 42 drives the outer cover 4 to return to its original position.

[0044] In some embodiments, the end of the outer cover 4 furthest from the mounting end of the outer shell 1 is bent inward to form a bent plate 44 whose shape is adapted to the end cover 5. When the outer cover 4 is moved to the first position, the bent plate 44 closes the air outlet 51; when the outer cover 4 is moved to the second position, the bent plate 44 opens the air outlet 51. With this design, on the one hand, when the air is being drawn in for dust extraction, the bent plate 44 closes the air outlet 51, that is, it closes the first airflow channel; on the other hand, when the air is being blown for self-cleaning, the bent plate 44 opens the air outlet 51, and the dust in the filter element 2 is discharged through the air outlet 51.

[0045] In some embodiments, when the outer cover 4 is moved to the second position, a second airflow channel is formed between the outer cover 4 and the filter screen 3 (e.g., Figure 3 As shown in X2, the second airflow channel is connected to the first airflow channel, and the second airflow channel is blocked when the outer cover 4 moves to the first position. With this design, the second airflow channel formed between the outer cover 4 and the filter screen 3 allows air to enter the second airflow channel from the first airflow channel during self-cleaning, creating a surrounding and enveloping airflow effect between the outer cover 4 and the filter screen 3, which can more effectively clean the dust on the filter element 2.

[0046] Furthermore, the separation filter structure also includes an end cap 5, which covers the mounting end of the filter element 2 and the filter screen 3 away from the outer shell 1. The area of ​​the mounting end of the outer cover 4 away from the outer shell 1 is bent outward and forms a gap with the filter screen 3. The mounting end of the outer cover 4 away from the outer shell 1 is provided with a bending plate 44 whose shape is adapted to the end cap 5. When the outer cover 4 is moved to the second position, a second airflow channel is formed between the outer cover 4 and the filter screen 3. When the outer cover 4 is moved to the first position, the bending plate 44 of the outer cover 4 is partially attached to the end cap 5 to block the second airflow channel.

[0047] In addition, a third airflow channel (such as) is formed between the outer cover 4 and the outer shell 1. Figure 3 (As shown in X3). With this design, during self-cleaning, some air passes through the second airflow channel, the second filter hole 41, and finally enters the third airflow channel, creating a surrounding airflow gathering effect between the outer cover 4 and the outer shell 1, which can more effectively clean the dust on the filter element 2.

[0048] The present invention provides a vacuum cleaner by setting a separate filtration structure including a housing 1 and a filter element 2, a filter screen 3 and an outer cover 4 located inside the housing 1. The filter element 2 and the filter screen 3 are fixedly installed on the mounting end of the housing 1 and the filter screen 3 is sleeved on the outside of the filter element 2. The outer cover 4 is movably installed on the mounting end of the housing 1 and sleeved on the outside of the filter screen 3. When vacuuming, the outer cover 4 moves to a first position in the direction toward the mounting end of the housing 1. When self-cleaning by blowing, the outer cover 4 moves to a second position in the direction away from the mounting end of the housing 1 to scrape away at least part of the dust on the outer wall surface of the filter screen 3. With this design, when the exhaust fan is activated, the outer cover 4 moves to the first position along the direction towards the mounting end of the outer casing 1. The air passes through the filter screen 3 and the filter element 2 in sequence, so that the dust is separated on the filter screen 3 and the filter element 2. When the fan is activated for self-cleaning, the outer cover 4 moves to the second position along the direction towards the second end, so as to scrape off at least part of the dust on the outer wall surface of the filter screen 3, so as to avoid dust accumulation on the separation filter structure, thereby improving cleaning efficiency and enhancing the user experience.

[0049] The foregoing has provided a detailed description of a separation filter structure and its vacuum cleaner as disclosed in the embodiments of the present invention. This article uses specific examples to illustrate the principles and implementation methods of the present invention. The description of the above embodiments is only for the purpose of helping to understand the separation filter structure and its vacuum cleaner and its core ideas. At the same time, for those skilled in the art, there will be changes in the specific implementation methods and application scope based on the ideas of the present invention. Therefore, the content of this specification should not be construed as a limitation of the present invention.

Claims

1. A separation and filtration structure, characterized in that, The device includes a housing and a filter element, a filter screen, and an outer cover located within the housing. The filter element and the filter screen are fixedly installed on the mounting end of the housing, with the filter screen sleeved over the filter element. The outer cover is movably installed on the mounting end of the housing and sleeved over the filter screen. During dust extraction, the outer cover moves to a first position in the direction toward the mounting end of the housing. During self-cleaning, the outer cover moves to a second position in the direction away from the mounting end of the housing to scrape away at least a portion of the dust on the outer wall surface of the filter screen.

2. The separation and filtration structure according to claim 1, characterized in that: The outer cover has a scraper on its inner wall facing the filter screen. The scraper is used to scrape dust off the filter screen when the outer cover moves to a second position in a direction away from the mounting end of the outer shell.

3. The separation and filtration structure according to claim 1, characterized in that: The filter screen is provided with a first filter hole, and the outer cover extends along the mounting end away from the outer shell and is provided with a second filter hole.

4. The separation and filtration structure according to claim 3, characterized in that: The area of ​​the second filter hole is larger than the area of ​​the first filter hole.

5. The separation and filtration structure according to any one of claims 1 to 4, characterized in that: The housing has an air inlet at the mounting end, and the separation filter structure also includes an end cap. The end cap covers the ends of the filter element and the filter screen that are away from the mounting end of the housing. The end cap has an air outlet. The air inlet, the filter element and the air outlet are connected in sequence to form a first airflow channel for self-cleaning by blowing air.

6. The separation and filtration structure according to claim 5, characterized in that: The end of the outer cover near the mounting end of the outer shell is bent outward to form a baffle. When the outer cover is in the first position, the baffle closes the air inlet. During self-cleaning by blowing air, the baffle moves under the action of the airflow to drive the outer cover from the first position to the second position.

7. The separation and filtration structure according to claim 6, characterized in that: The outer shell has a first limiting part and a second limiting part that are spaced apart. The baffle is located between the first limiting part and the second limiting part. The first limiting part is used to limit the baffle when the outer shell moves to the first position, and the second limiting part is used to limit the baffle when the outer shell moves to the second position.

8. The separation and filtration structure according to claim 7, characterized in that: The outer casing includes a cover and a housing with an opening. The cover seals the opening of the housing. The filter element and the filter screen are fixedly installed on the cover. The air inlet and the first limiting part are provided on the cover, and the second limiting part is provided on the housing.

9. The separation and filtration structure according to claim 6, characterized in that: The separation and filtration structure also includes a reset spring. A third limiting part is provided inside the outer shell. The reset spring is sleeved outside the outer cover, with one end abutting against the third limiting part and the other end abutting against the baffle.

10. The separation and filtration structure according to claim 5, characterized in that: The end of the outer cover away from the mounting end of the outer shell is bent inward to form a bent plate whose shape is adapted to the end cover. When the outer cover is moved to the first position, the bent plate closes the air outlet. When the outer cover is moved to the second position, the bent plate opens the air outlet.

11. The separation and filtration structure according to any one of claims 1 to 4, characterized in that: When the outer cover moves to the second position, a second airflow channel is formed between the outer cover and the filter screen. When the outer cover moves to the first position, the second airflow channel is blocked.

12. The separation and filtration structure according to claim 11, characterized in that: The separation and filtration structure further includes an end cap that covers the end of the filter element and the filter screen that is away from the mounting end of the outer casing. The area of ​​the outer cover that is away from the mounting end of the outer casing is bent outward and forms a gap with the filter screen. The mounting end of the outer cover that is away from the outer casing is provided with a bending plate whose shape is adapted to the end cap. When the outer cover is moved to the second position, a second airflow channel is formed between the outer cover and the filter screen. When the outer cover is moved to the first position, the bending plate of the outer cover partially fits against the end cap to block the second airflow channel.

13. A vacuum cleaner, characterized in that, It includes a vacuum cleaner body and a separation filter structure as described in any one of claims 1 to 12, wherein the separation filter structure is disposed on the vacuum cleaner body.

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