Separating and filtering structure and dust collector thereof

Abstract

The utility model discloses a separating and filtering structure and a dust collector thereof, the separating and filtering structure comprises a shell, a filter element, a filter screen and an outer cover, the filter element, the filter screen and the outer cover are located in the shell, the filter element and the filter screen are fixedly installed at the installation end of the shell, the filter screen is sleeved outside the filter element, and the outer cover is movably installed at the installation end of the shell and sleeved outside the filter screen. The outer cover moves to the second position in the direction away from the mounting end of the shell, a first air channel is formed between the outer cover and the filter screen, and during air draft and dust collection, the outer cover moves to the first position in the direction towards the mounting end of the shell and blocks the first air channel. By the adoption of the design mode, during blowing self-cleaning, the outer cover moves to the second position so as to scrape off at least part of dust on the outer wall face of the filter screen, in addition, the first air channel is formed between the outer cover and the filter screen, the surrounding type wrapping air gathering effect is formed between the outer cover and the filter screen, and dust on the filter element can be more effectively cleaned.

Description

Technical Field

[0001] This utility model relates to the field of vacuuming technology, and in particular 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. Utility Model Content

[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, so as 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 the problem. In a first aspect, an embodiment of the present invention discloses a separation and filtration 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 self-cleaning by blowing air, the outer cover moves to a second position in a direction away from the mounting end of the housing. A first air duct is formed between the outer cover and the filter screen. During dust extraction, the outer cover moves to a first position in a direction toward the mounting end of the housing and blocks the first air duct.

[0005] As an optional implementation, in an embodiment of the first aspect of this utility model, the separation filter structure further includes an end cap, which covers the end of the filter element and the filter screen that is away from the mounting end of the outer casing. The region 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 first air duct 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 is partially attached to the end cap to block the first air duct.

[0006] As an optional implementation, in an embodiment of the first aspect of this utility model, 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 ends 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, the air inlet, the filter element and the air outlet being sequentially connected to form a second air duct for self-cleaning by blowing air, and the first air duct being connected to the second air duct.

[0007] As an optional implementation, in an embodiment of the first aspect of this utility model, 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.

[0008] 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, and 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.

[0009] As an optional implementation, in an embodiment of the first aspect of this utility model, the outer shell 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 part being provided on the cover, and the second limiting part being provided on the housing.

[0010] As an optional implementation, in an embodiment of the first aspect of this utility model, the separation and filtering structure further includes a reset spring, a third limiting part is provided inside the outer shell, the reset spring is sleeved outside the outer cover, one end of which abuts against the third limiting part and the other end of which abuts against the baffle.

[0011] As an optional implementation, in an embodiment of the first aspect of this utility model, the end of the outer cover away from the mounting end of the outer shell is bent inward to form a bending plate whose shape is adapted to the end cover. When the outer cover is moved to the first position, the bending plate closes the air outlet. When the outer cover is moved to the second position, the bending plate opens the air outlet.

[0012] As an optional implementation, in an embodiment of the first aspect of the present invention, a scraper is provided on the inner wall surface of the outer cover facing the filter screen, the scraper being used to scrape off dust on the filter screen when the outer cover moves to a second position in a direction away from the mounting end of the outer shell.

[0013] Secondly, this utility model discloses 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.

[0014] Implementing the embodiments of this utility model will have the following beneficial effects:

[0015] This utility model features 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 installed on the mounting end of the housing, with the filter screen covering the filter element. The outer cover is movably installed on the mounting end of the housing and covers the filter screen. During self-cleaning by blowing air, the outer cover moves to a second position in a direction away from the mounting end of the housing, forming a first air duct between the outer cover and the filter screen. During dust extraction, the outer cover moves to a first position in a direction toward the mounting end of the housing, blocking the first air duct. With this design, when the fan is sucking in dust, the outer cover moves to the first position along the direction towards the mounting end of the outer shell. The air passes through the filter screen and filter element in sequence, so that the dust is separated on the filter screen and filter element. When the fan is blowing for self-cleaning, the outer cover moves to the second position along the direction towards the second end, so as to scrape away at least part of the dust on the outer wall surface of the filter screen and prevent dust from accumulating on the separation filter structure. In addition, the first air duct formed between the outer cover and the filter screen creates a surrounding wrap-around air gathering effect, which can more effectively clean the dust on the filter element, thereby improving cleaning efficiency and enhancing the user experience. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this utility model 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 this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the separation and filtration structure in an embodiment of the present utility model;

[0018] Figure 2 This is a cross-sectional view of the outer shell of the separation filter structure in this embodiment of the present invention, moved to the first position.

[0019] Figure 3A cross-sectional view of the housing of the separation filter structure in this embodiment of the present invention, moved to the second position. Figure 1 ;

[0020] Figure 4 A cross-sectional view of the housing of the separation filter structure in this embodiment of the present invention, moved to the second position. Figure 2 .

[0021] The meanings of the reference numerals in the attached figures are as follows:

[0022] 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; 4-Outer cover; 42-Baffle; 43-Scraper; 44-Bending plate; 5-End cover; 51-Air outlet; 6-Reset spring. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] 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 this invention and its embodiments, and are not intended to limit the indicated device, element, or component to having a specific orientation, or to be constructed and operated in a specific orientation.

[0025] 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 some cases to indicate a certain dependency or connection relationship. Those skilled in the art can understand the specific meaning of these terms in this utility model according to the specific circumstances.

[0026] 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 utility model based on the specific circumstances.

[0027] 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.

[0028] The technical solution of this utility model will be further described below with reference to the embodiments and accompanying drawings.

[0029] Please refer to the following: Figures 1 to 4 This utility model 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 of this solution 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 self-cleaning by blowing air, the outer cover 4 moves to a second position in a direction away from the mounting end of the housing 1 (e.g., ...). Figure 3 , Figure 4 As shown), a first air duct is formed between the outer cover 4 and the filter screen 3 (as shown). Figure 4 As shown in X1), during the suction and dust extraction process, the outer cover 4 moves to the first position along the direction towards the mounting end of the outer casing 1 (as shown in X1). Figure 2 (As shown) and blocks the first air duct. With this design, when the exhaust is activated, the outer cover 4 moves to the first position along the direction towards the mounting end of the outer casing 1, and 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 blower 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, and prevent dust from accumulating on the separation filter structure. In addition, the first air duct formed between the outer cover 4 and the filter screen 3 creates a surrounding wrap-around air gathering effect between the outer cover 4 and the filter screen 3, which can more effectively clean the dust on the filter element 2, thereby improving cleaning efficiency and enhancing the user experience.

[0030] 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 first air duct 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 first air duct.

[0031] In some embodiments, the mounting end of the housing 1 is provided with an air inlet 111, and the separation filter structure also includes an end cap 5. The end cap 5 covers the ends of the filter element 2 and the filter screen 3 that are 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 second air duct for self-cleaning airflow (e.g., ...). Figure 4 As shown in X2, the first air duct is connected to the second air duct, and the air from the second air duct enters the first air duct.

[0032] 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 second air duct, 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.

[0033] Furthermore, in order to prevent the outer cover 4 from leaving the first and second positions 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 only moves between the first and second positions.

[0034] 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.

[0035] 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 is provided inside the outer shell 1, and 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 squeezes the return spring 6; when the outer cover 4 moves from the second position to the second 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.

[0036] 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, closes the second air duct; 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.

[0037] In some embodiments, 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 dust on the filter screen 3 when the outer cover 4 moves to a second position in a 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.

[0038] The present invention provides a vacuum cleaner by setting a separate filtration structure including a shell 1 and a filter element 2, a filter screen 3, and an outer cover 4 located inside the shell 1. The filter element 2 and the filter screen 3 are fixedly installed on the mounting end of the shell 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 shell 1 and sleeved on the outside of the filter screen 3. When blowing for self-cleaning, the outer cover 4 moves to a second position in the direction away from the mounting end of the shell 1. A first air duct is formed between the outer cover 4 and the filter screen 3. When suctioning dust, the outer cover 4 moves to a first position in the direction toward the mounting end of the shell 1 and blocks the first air duct. With this design, when the exhaust fan is engaged, 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 engaged 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 of the filter screen 3, preventing dust from accumulating on the separation filter structure. In addition, the first air duct formed between the outer cover 4 and the filter screen 3 creates a surrounding enveloping air-gathering effect between the outer cover 4 and the filter screen 3, which can more effectively clean the dust on the filter element 2, thereby improving cleaning efficiency and enhancing the user experience.

[0039] The above provides a detailed description of a separation filter structure and its vacuum cleaner disclosed in the embodiments of this utility model. This article uses specific examples to illustrate the principle and implementation of this utility model. 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 idea of ​​this utility model. At the same time, for those skilled in the art, there will be changes in the specific implementation and application scope based on the idea of ​​this utility model. Therefore, the content of this specification should not be construed as a limitation of this utility model.

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 self-cleaning by blowing air, the outer cover moves to a second position in a direction away from the mounting end of the housing, and a first air duct is formed between the outer cover and the filter screen. During dust extraction, the outer cover moves to a first position in a direction toward the mounting end of the housing, and blocks the first air duct.

2. The separation and filtration structure according to claim 1, characterized in that: The separation filter structure further includes an end cap, which 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 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 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 first air duct 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 is partially attached to the end cap to block the first air duct.

3. The separation and filtration structure according to claim 1, 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 second air duct for self-cleaning by blowing air. The first air duct is connected to the second air duct.

4. The separation and filtration structure according to claim 3, 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.

5. The separation and filtration structure according to claim 4, 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.

6. The separation and filtration structure according to claim 5, 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.

7. The separation and filtration structure according to claim 4, 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.

8. The separation and filtration structure according to claim 4, 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.

9. The separation and filtration structure according to any one of claims 1 to 8, 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.

10. 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 9, wherein the separation filter structure is disposed on the vacuum cleaner body.

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