Filter structure

Abstract

The utility model discloses a filter structure which comprises filter paper and at least one end cover, a plurality of fold grooves are formed in the filter paper, a plurality of first receding grooves are formed in the peripheral wall of the end cover, the end cover is connected with one end of the filter paper so as to seal an opening in one end of the filter paper, and the first receding grooves are formed in the peripheral wall of the end cover. The filter paper and the end cover form a first channel, the end cover is provided with a channel opening communicated with the first channel, and each first receding groove corresponds to one wrinkled groove to form an air channel with the two ends open. According to the filter structure, the first receding groove is formed in the end cover and matched with the wrinkle groove, so that when the dust collector is cleaned, wind is prevented from being blocked by the end cover, the connecting position of the filter paper and the end cover becomes a cleaning dead angle, cleaning cannot be achieved, and the self-cleaning effect of the dust collector is affected.

Description

Technical Field

[0001] The utility model relates to the technical field of vacuum cleaners, in particular to a filter structure. Background Art

[0002] The working principle of a vacuum cleaner is to use an electric motor to drive the blades to rotate at high speed, generate negative air pressure in a sealed shell, and absorb dusty surfaces such as carpets, floors, and walls. After the dust is sucked into the dust-gas separation component along with the air, the dust is filtered by the HEPA filter in the dust-gas separation component and collected by the dust collection bucket. The filtered clean air is then discharged from the vacuum cleaner body. During the decontamination process, whether it is a dust-type filter or a cyclone filter, dust will adhere to the surface of the filter paper on the air inlet side. The longer it is used, the more dust will accumulate on the surface of the filter paper, which will gradually weaken the air permeability of the filter HEPA filter, causing the wind force to drop, thereby reducing the dust removal performance of the vacuum cleaner.

[0003] In the prior art, some vacuum cleaners are capable of self-cleaning. After use, the vacuum cleaner is placed on a base, and the filter paper is blown and cleaned, so that the dust falls off and enters the dust cup on the base. However, the end cap of the existing filter paper will cover the folds on the filter paper, and the connection between the filter paper and the end cap will form a sanitary dead corner, which is difficult to clean, thereby resulting in poor cleaning effect of the vacuum cleaner's self-cleaning mode. Utility Model Content

[0004] The utility model aims to provide a filter structure to solve the technical problem that the end cover of the filter structure in the prior art blocks the airflow from blowing the filter paper, and the connection between the filter paper and the end cover forms a sanitary dead angle, resulting in poor self-cleaning effect of the vacuum cleaner.

[0005] The utility model provides a filter structure, comprising filter paper and at least one end cover, the filter paper is provided with a plurality of pleated grooves, the outer peripheral wall of the end cover is provided with a plurality of first avoidance grooves, the end cover is connected to one end of the filter paper to seal an opening at one end of the filter paper, the filter paper and the end cover form a first channel, the end cover is provided with a channel opening connected to the first channel, and each of the first avoidance grooves corresponds to a pleated groove to form an air duct with openings at both ends.

[0006] In the filter structure as described above, the filter paper is provided with a plurality of pleated portions, and the pleated groove is formed between every two adjacent pleated portions. The outer side wall of the end cover is provided with a plurality of connecting portions, and the first avoidance groove is formed between every two adjacent connecting portions.

[0007] In the filter structure as described above, each of the connecting parts is plugged into the inner side of one of the pleated parts.

[0008] In the filter structure as described above, the top wall of the connecting portion is an inclined wall surface which gradually inclines from the inside to the outside toward the direction of the filter paper.

[0009] As described above, the filter structure further comprises a filter support, the end cap is plugged into the outer peripheral wall of the filter support, and the filter paper wraps the outer peripheral wall of the filter support.

[0010] As described above, in the filter structure, at least one first annular groove is provided on the filter bracket, and an annular protrusion extending inward is provided on the inner side wall of the end cover, and the annular protrusion is inserted into the first annular groove.

[0011] In the filter structure as described above, the bottom wall of the annular protrusion is the first guide wall, the groove wall in the first annular groove close to the filter paper is the second guide wall, and the first guide wall moves along the second guide wall to allow the annular protrusion to fit into the first annular groove.

[0012] As described above, the filter structure, the filter bracket includes a first mounting portion, a second mounting portion and a plurality of ribs, the first mounting portion and the second mounting portion are both provided with a first annular groove, one end of the rib is connected to the first mounting portion, and the other end is connected to the second mounting portion, the plurality of ribs form an annular mounting wall, and the filter paper wraps the annular mounting wall.

[0013] As described above, the filter structure comprises two end covers, the two end covers are radially plugged into the first mounting portion and the second mounting portion respectively, the two end covers are axially plugged into the two ends of the filter paper respectively, and the two end covers are sealedly connected to the filter paper.

[0014] In the filter structure as described above, the pleated grooves are V-shaped grooves or U-shaped grooves.

[0015] Implementing the embodiments of the present utility model will have the following beneficial effects:

[0016] In the utility model, the filter paper and at least one end cap are provided with a plurality of pleated grooves on the filter paper, and a plurality of first avoidance grooves are provided on the outer peripheral wall of the end cap. The end cap is connected to one end of the filter paper to seal the opening at one end of the filter paper, and each first avoidance groove corresponds to a pleated groove to form an air duct with two ends open. The first avoidance groove is provided on the end cap, and the first avoidance groove is adapted to the pleated groove, so that when the vacuum cleaner is cleaning, the wind will not be blocked by the end cap, causing the connection between the filter paper and the end cap to become a cleaning dead angle, which cannot be cleaned, and affects the self-cleaning effect of the vacuum cleaner. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0018] Figure 1 is a schematic structural diagram of a filter structure according to an exemplary embodiment;

[0019] Figure 2 is an exploded view of a filter structure according to an exemplary embodiment;

[0020] Figure 3 is a cross-sectional view of a filter structure according to an exemplary embodiment.

[0021] Among them: 1. end cover; 11. first avoidance groove; 12. inclined wall; 13. annular protrusion; 131. first guide wall; 14. connecting part; 2. filter paper; 21. pleated groove; 22. pleated part; 3. filter bracket; 31. first mounting part; 311. first annular groove; 312. second guide wall; 32. rib; 33. second mounting part. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0024] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0025] In the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0026] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention.

[0027] See also Figure 1-Figure 3 The utility model provides a filter structure, including filter paper 2 and at least one end cap 1, the filter paper 2 is provided with a plurality of pleated grooves 21, the outer peripheral wall of the end cap 1 is provided with a plurality of first avoidance grooves 11, the end cap 1 is connected to one end of the filter paper 2 to seal the opening at one end of the filter paper 2, the filter paper 2 and the end cap 1 form a first channel, the end cap 1 is provided with a channel opening connected to the first channel, each first avoidance groove 11 corresponds to a pleated groove 21 to form an air duct with two ends open. The first avoidance groove 11 is provided on the end cap 1, and the first avoidance groove 11 is adapted to the pleated groove 21, so that when the vacuum cleaner is cleaning, the wind will not be blocked by the end cap 1, causing the connection between the filter paper 2 and the end cap 1 to become a cleaning dead angle, which cannot be cleaned, affecting the self-cleaning effect of the vacuum cleaner.

[0028] Furthermore, the filter paper 2 is provided with a plurality of pleated portions 22, and a pleated groove 21 is formed between every two adjacent pleated portions 22. The outer wall of the end cover 1 is provided with a plurality of connecting portions 14, and a first avoidance groove 11 is formed between every two adjacent connecting portions 14. In a specific embodiment, the connecting portion 14 is a V-shaped protrusion extending radially outward.

[0029] Furthermore, each connecting portion 14 is inserted into the inner side of a pleated portion 22, and the connecting portion 14 and the pleated portion 22 are interference fit or glued at the connection between the two, thereby realizing a sealed connection between the end cover 1 and the filter paper 2. During vacuuming, the gas can only pass through the filter paper 2 to enter the internal space of the filter structure, and will not enter from the connecting gap between the end cover 1 and the filter paper 2, thereby ensuring the filtering function during vacuuming.

[0030] Furthermore, the top wall of the connecting portion 14 is an inclined wall surface 12 which is gradually inclined from the inside to the outside toward the direction of the filter paper 2. Specifically, the outer wall diameter of the end cap 1 is smaller than the outer diameter of the filter paper 2, and the end cap 1 will not block the airflow, which is conducive to self-cleaning dust blowing. The inclined wall surface 12 can not only avoid the airflow blowing toward the outer wall surface of the filter paper 2, but also guide the airflow to blow toward the outer wall surface of the filter paper 2, thereby improving the cleaning effect of the filter paper 2.

[0031] Furthermore, the filter paper 2 is an annular columnar structure, and a plurality of pleated grooves 21 are evenly distributed on the side wall of the filter paper 2. The pleated grooves 21 are grooves formed by folding the outer wall of the filter paper 2 inward, which is beneficial to increase the filtering area of ​​the filter paper 2 and improve the filtering efficiency.

[0032] Furthermore, the filter structure also includes a filter bracket 3, the end cap 1 is inserted into the outer peripheral wall of the filter bracket 3, the filter paper 2 wraps the outer peripheral wall of the filter bracket 3, and the end cap 1 is fixed to the filter bracket 3 by inserting the end cap 1 into the outer peripheral wall of the filter bracket 3.

[0033] Furthermore, at least one first annular groove 311 is provided on the filter support 3, and an annular protrusion 13 extending inward is provided on the inner side wall of the end cover 1, and the annular protrusion 13 is inserted into the first annular groove 311. The end cover 1 is an annular structure, and a through hole is provided in the middle thereof. The annular protrusion 13 is arranged on the hole wall of the through hole. When the end cover 1 is sleeved on the filter support 3, the annular protrusion 13 can be inserted into the first annular groove 311, so that the end cover 1 is fixed.

[0034] Further, the bottom wall of the annular projection 13 is the first guide wall 131, and the groove wall of the first annular groove 311 close to the filter paper 2 is the second guide wall 312. The first guide wall 131 moves along the second guide wall 312 to allow the annular projection 13 to be inserted into the first annular groove 311. The first guide wall 131 cooperates with the second guide wall 312 to guide the annular projection 13 to be inserted into the first annular groove 311.

[0035] Furthermore, the filter bracket 3 includes a first mounting portion 31, a second mounting portion 33 and a plurality of ribs 32. The first mounting portion 31 and the second mounting portion 33 are both provided with a first annular groove 311. One end of the rib 32 is connected to the first mounting portion 31, and the other end is connected to the second mounting portion 33. The plurality of ribs 32 form an annular mounting wall, and the filter paper 2 wraps the annular mounting wall.

[0036] Specifically, the filter bracket 3 is a hollow structure, an exhaust port is provided in the middle of the first mounting portion 31, the exhaust port is connected to the hollow structure inside the filter bracket 3, and the bottom of the second mounting portion 33 is a conical protrusion, which seals the bottom end of the hollow structure.

[0037] Furthermore, the filter structure includes two end caps 1, which are radially plugged into the first mounting portion 31 and the second mounting portion 33, respectively, and are axially plugged into the two ends of the filter paper 2, respectively, and the two end caps 1 are sealed to the filter paper 2. When vacuuming, the gas can only pass through the filter paper 2 to enter the internal space of the filter structure, and the gas entering the internal space of the filter structure is the gas filtered by the filter paper 2, and is finally discharged from the exhaust port in the middle of the filter structure, thereby realizing the dust suction and filtering function.

[0038] Furthermore, the middle of the rib 32 has an annular support portion, which connects a number of ribs 32 and can strengthen the rigidity of the rib 32, making the filter structure more stable and preventing deformation.

[0039] Furthermore, the pleated groove 21 is a V-shaped groove or a U-shaped groove, which can increase the area of ​​the outer side wall of the filter paper 2, thereby increasing the filtering area, which is beneficial to improving the filtering efficiency.

[0040] Furthermore, the pleat groove 21 is a U-shaped groove, and the folded edge is an arc-shaped structure, which is not easy to accumulate garbage, thereby preventing the garbage from being caught in the folded edge of the pleat groove 21 and unable to be blown out, thereby achieving a better self-cleaning effect.

[0041] The above embodiments are only used to illustrate the technical solution of the utility model, rather than to limit the protection scope of the utility model.

Claims

1. A filter structure, characterized in that: It includes filter paper and at least one end cover, the filter paper is provided with a plurality of pleated grooves, the outer peripheral wall of the end cover is provided with a plurality of first avoidance grooves, the end cover is connected to one end of the filter paper to seal the opening at one end of the filter paper, the filter paper and the end cover form a first channel, the end cover is provided with a channel opening connected to the first channel, and each of the first avoidance grooves corresponds to a pleated groove to form an air duct with two ends open.

2. The filter structure according to claim 1, characterized in that: The filter paper is provided with a plurality of pleated parts, and the pleated groove is formed between every two adjacent pleated parts. The outer side wall of the end cover is provided with a plurality of connecting parts, and the first avoidance groove is formed between every two adjacent connecting parts.

3. The filter structure according to claim 2, characterized in that: Each of the connecting parts is plugged into the inner side of one of the folded parts.

4. The filter structure according to claim 3, characterized in that: The top wall of the connecting portion is an inclined wall surface which gradually inclines from the inside to the outside toward the direction of the filter paper.

5. The filter structure according to claim 3, characterized in that: The filter structure further comprises a filter support, the end cover is plugged into the outer peripheral wall of the filter support, and the filter paper wraps the outer peripheral wall of the filter support.

6. The filter structure according to claim 5, characterized in that: The filter bracket is provided with at least one first annular groove, and the inner side wall of the end cover is provided with an annular protrusion extending inwardly, and the annular protrusion is inserted into the first annular groove.

7. The filter structure according to claim 6, characterized in that: The bottom wall of the annular protrusion is a first guide wall, the groove wall in the first annular groove close to the filter paper is a second guide wall, and the first guide wall moves along the second guide wall to make the annular protrusion snap into the first annular groove.

8. The filter structure according to claim 6, characterized in that: The filter bracket includes a first mounting portion, a second mounting portion and a plurality of ribs, the first mounting portion and the second mounting portion are both provided with a first annular groove, one end of the rib is connected to the first mounting portion, and the other end is connected to the second mounting portion, the plurality of ribs form an annular mounting wall, and the filter paper wraps the annular mounting wall.

9. The filter structure according to claim 8, characterized in that: The filter structure comprises two end covers, which are radially plugged into the first mounting portion and the second mounting portion respectively, and are axially plugged into two ends of the filter paper respectively, and are sealedly connected to the filter paper.

10. The filter structure according to claim 3, characterized in that: The pleat groove is a V-shaped groove or a U-shaped groove.

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