CN220238114U - Filter element assembly and air filter - Google Patents

Abstract

The utility model provides a filter element assembly and an air filter, which belong to the technical field of air purification equipment, and comprise a filter element main body and a paper frame; the filter element main body is folded to be in a zigzag structure; the paper frame is arranged at the sawtooth edge of the filter element main body, and is provided with fold lines corresponding to the straight edge sections of the sawtooth edge one by one, and the straight edge sections of the filter element main body are connected to the fold lines of the paper frame one by one; and a folding deformation part is formed between two adjacent folding lines, and is recessed towards the filter element main body in a folding state, or is protruded in a direction away from the filter element main body in a folding state. The utility model can effectively reduce the occupied space of the filter element assembly during transportation, reduce the transportation cost and improve the design flexibility of the whole structure of the air filter.

Description

Filter element assembly and air filter

Technical Field

The utility model belongs to the technical field of air purification equipment, and particularly relates to a filter element assembly and an air filter.

Background

HEPA (high efficiency air Filter) is mainly used for trapping more than 0.5 μm particle dust and various suspended matters, and mainly consists of a filter element and a shell. HEPA generally needs to possess filtration efficiency height, low, the long-time continuous use of flow resistance in order to reduce the characteristics of later stage consumptive material cost, but wide application in optics electron, LCD liquid crystal manufacturing, biological medicine, precision instruments, beverage and food, PCB industry dustless clean workshop's such as printing air conditioner terminal air supply department.

The filter element is a core component of HEPA and is also a consumable material, and needs to be replaced periodically. The existing filter element is folded into a zigzag shape by filter paper, and then a rectangular or cylindrical structure is formed. Because the shape and the size of the existing filter element are fixed, the occupied space of the single filter element is larger during transportation, the transportation cost is higher, and the fixed shape and the fixed size also cause great limitation on the structural design of the air filter.

Disclosure of Invention

The embodiment of the utility model provides a filter element assembly and an air filter, which aim to solve the problems of large occupied space for transportation and limitation of structural design of the air filter caused by the fixed shape and size of a filter element in the prior art.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

in a first aspect, there is provided a filter cartridge assembly comprising:

a filter element main body which is folded to be a zigzag structure; and

the paper frame is arranged at the sawtooth edge of the filter element main body and is provided with fold lines corresponding to the straight edge sections of the sawtooth edge one by one, and the straight edge sections of the filter element main body are connected to the fold lines of the paper frame one by one;

and a folding deformation part is formed between two adjacent folding lines, and the folding deformation part is sunken towards the filter element main body in a folding state, or is protruded in a direction deviating from the filter element main body in the folding state.

With reference to the first aspect, in one possible implementation manner, the folding deformation portion is formed with a deformation fold line, and the deformation fold line extends from a junction point of two adjacent fold lines to an edge of a side, opposite to the junction point, of the folding deformation portion.

In some embodiments, the deformed fold line extends along an angular bisector of the corresponding two fold lines.

In some embodiments, in the same folding deformation portion, a plurality of deformation fold lines are provided, and the plurality of deformation fold lines are radially distributed with a corresponding intersection point as an origin.

In some embodiments, the edge of the fold deformation opposite the intersection is a straight edge.

In some embodiments, the edge of the fold deformation opposite the intersection is a curvilinear edge.

With reference to the first aspect, in one possible implementation manner, the filter element main body is folded to have a zigzag structure with equal height.

With reference to the first aspect, in a possible implementation manner, in a plane perpendicular to the paper surface of the filter element main body, an orthographic projection of the fold line coincides with an orthographic projection of the straight edge section, and a length of the fold line is equal to a length of the straight edge section.

Compared with the prior art, the scheme of the embodiment of the application has the advantages that as the filter element main body is folded to be of a zigzag structure, the filter element main body can be unfolded or compressed and then is matched with the folding line formed on the paper frame, and further in the compression process of the filter element main body, the folding deformation part can be sunken towards the filter element main body or protrudes towards the direction deviating from the filter element main body, and further the paper frame can be folded and compressed; during flattening of the cartridge body, the folded deformations are also gradually flattened. Among the filter core assembly of this application, the paper frame can compress or flatten in step too along with the compression or the flattening of filter core main part, and the width of filter core assembly can nimble change, and the beneficial effect of design like this lies in: 1) When in transportation, the filter element assembly is in a compressed state, so that the occupied space is reduced, when the filter element assembly is assembled with the filter main body, the filter element assembly can be unfolded according to the actual assembly requirement, and on the premise of meeting the assembly requirement, the occupied space of the filter element assembly during transportation can be effectively reduced, and the transportation cost is reduced; 2) Because the width of filter core assembly can nimble change, to the filter core assembly of a model, can design not unidimensional filter main part, perhaps, control motor rotational speed through the compression degree that changes filter core assembly in same filter main part, promote air filter overall structure design flexibility.

In a second aspect, an embodiment of the present utility model further provides an air filter, including a filter main body and the filter element assembly described above, where the filter element assembly is disposed within a frame of the filter main body, and the paper frame and/or the filter element main body are connected with the frame.

With reference to the second aspect, in one possible implementation manner, the frame is provided with a hook, and the hook is in clamping fit with the linear edge of the filter element main body in the folding and expanding direction of the filter element main body.

Compared with the prior art, the scheme that this application embodiment shows, through adopting foretell filter core assembly, reduced filter core assembly's cost of transportation, and then be favorable to reducing producer's cost of production, through promoting air cleaner structural design flexibility, can promote the sense of quality that the product used.

Drawings

FIG. 1 is a state diagram I of a filter element assembly according to a first embodiment of the present utility model, wherein a straight double arrow indicates a folding telescopic path;

FIG. 2 is a second state diagram of a filter element assembly according to a first embodiment of the present utility model;

fig. 3 is an enlarged view of a portion a of fig. 2;

FIG. 4 is a third state diagram of a filter element assembly according to an embodiment of the present utility model;

fig. 5 is an enlarged view of a portion B of fig. 4;

FIG. 6 is an exploded view of the cartridge assembly of FIG. 4;

FIG. 7 is a schematic view of the structure of FIG. 4 in the direction C, wherein the paper frame above is not shown;

fig. 8 is a partial top view of a cartridge assembly according to a second embodiment of the present utility model.

Reference numerals illustrate:

1. a cartridge body; 101. a straight edge section; 120. a straight edge;

2. a paper frame; 210. a folding line; 211. a junction; 220. folding the deformation part; 230. and (5) deforming the folding line.

Detailed Description

In order to make the technical problems, technical schemes and beneficial effects to be solved more clear, the utility model is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the utility model.

In the claims, specification and drawings hereof, unless explicitly defined otherwise, the terms "first," "second," or "third," etc. are used for distinguishing between different objects and not for describing a particular sequential order.

In the claims, specification and drawings of the present utility model, unless explicitly defined otherwise, references to orientation words such as "center", "lateral", "longitudinal", "horizontal", "vertical", "top", "bottom", "inner", "outer", "upper", "lower", "front", "rear", "left", "right", "clockwise", "counterclockwise", "high", "low", etc. are based on the orientation and positional relationship shown in the drawings and are merely for convenience of description and to simplify the description, and do not indicate or imply that the apparatus or element referred to must have a particular orientation or be constructed and operated in a particular orientation, nor should it be construed as limiting the specific scope of the utility model.

In the claims, specification and drawings of the present utility model, unless explicitly defined otherwise, the term "fixedly connected" or "fixedly connected" should be construed broadly, i.e. any connection between them without a displacement relationship or a relative rotation relationship, that is to say includes non-detachably fixedly connected, integrally connected and fixedly connected by other means or elements.

In the claims, specification and drawings of the present utility model, the terms "comprising," having, "and variations thereof as used herein, are intended to be" including but not limited to.

Referring to fig. 1 to 8, a filter element assembly according to the present utility model will now be described. The filter element assembly comprises a filter element main body 1 and a paper frame 2; the filter element main body 1 is folded to be in a zigzag structure; the paper frame 2 is arranged at the sawtooth edge of the filter element main body 1, the paper frame 2 is provided with fold lines 210 which are in one-to-one correspondence with the straight edge sections 110 of the sawtooth edge, and the straight edge sections 110 of the filter element main body 1 are connected at the fold lines 210 of the paper frame 2 one by one; a fold deformation 220 is formed between two adjacent fold lines 210, the fold deformation 220 being concave toward the cartridge body 1 in the folded state, or the fold deformation 220 being convex in a direction away from the cartridge body 1 in the folded state.

In the present embodiment, since the straight edge section 101 is linear, the fold line 210 is also a linear fold line.

In the conventional filter element structure, the paper frame is generally made of hard, non-foldable or difficult-to-fold materials. In this embodiment, the paper frame 2 is made of foldable materials (such as kraft paper and kraft paper) so as to meet the folding requirement of the paper frame 2, and meanwhile, the paper frame 2 has a certain structural strength, so that the paper frame 2 is prevented from being torn in the folding/flattening process, and meanwhile, the filter element main body 1 can be supported to a certain extent after being unfolded.

In this embodiment, the connection manner between the paper frame 2 and the filter element main body 1 includes, but is not limited to, bonding and clamping (for example, a convex sheet buckle is arranged at the straight edge section 101, and a strip bayonet is correspondingly arranged at the fold line 210), so that the requirements of assembly and folding deformation can be met.

In this embodiment, the same paper frame 2 has a plurality of fold deformations 220, and the plurality of fold deformations 220 are distributed along the folding/unfolding path (folding expansion path) of the cartridge body 1, as shown by the double-arrow path in fig. 1. In addition, since the fold lines 210 are in one-to-one correspondence with the straight edge sections 110, each of the fold deformations 220 has a fan shape or a triangle shape, as shown in fig. 4 to 6.

In this embodiment, the folding deformation portion 220 can be folded along with the total shrinkage of the filter cartridge, and the folding deformation portion 220 is in a state of being recessed toward the filter cartridge body 1 or protruding in a direction away from the filter cartridge body 1 after being folded. In the same paper frame 2, all the folding deformation parts 220 are recessed toward the filter element main body 1 in a folded state (as shown in fig. 1 to 8), after folding, the paper frame 2 is housed in the filter element main body 1, and the folded filter element assembly has a smaller size in a direction perpendicular to the folding/flattening path; alternatively, all of the folding deformation portions 220 are formed to protrude in a direction away from the cartridge body 1 in the folded state (not shown in the drawings); alternatively, in the same paper frame 2, a part of the paper frame is a structure recessed toward the filter element main body 1 in a folded state, and the rest of the folding deformation parts 220 are structures protruding in a direction away from the filter element main body 1 in a folded state.

In this embodiment, fig. 1, fig. 2 and fig. 4 show different folding states of the same filter element assembly, wherein the expansion degree of the filter element assembly in fig. 1 is 20%, the expansion degree of the filter element assembly in fig. 2 is 50%, and the expansion degree of the filter element assembly in fig. 4 is 100%. In the state shown in fig. 1, the filter element main body 1 is large in folding degree, and air circulation resistance is large, so that the rotating speed of the motor can be properly increased to increase the power of air circulation; in the state shown in fig. 4, the folding degree of the filter element main body 1 is smaller, the air circulation resistance is smaller, the rotating speed of the motor can be properly reduced, and the energy consumption is reduced.

Compared with the prior art, the filter element assembly provided by the embodiment has the advantages that as the filter element main body 1 is folded to be in a zigzag structure, the filter element main body 1 can be unfolded or compressed, and then the folding deformation part 220 can be sunken towards the filter element main body 1 or protruded towards the direction deviating from the filter element main body 1 in the compression process of the filter element main body 1 in cooperation with the folding line 210 formed on the paper frame 2, so that the paper frame 2 can be folded and compressed; during flattening of the cartridge body 1, the fold deformations 220 also flatten gradually. In the filter element assembly of this embodiment, the paper frame 2 can compress or flatten in step with the compression or flattening of filter element main part 1 too, and the width of filter element assembly can nimble change, and the beneficial effect of design like this lies in: 1) When in transportation, the filter element assembly is in a compressed state, so that the occupied space is reduced, when the filter element assembly is assembled with the filter main body, the filter element assembly can be unfolded according to the actual assembly requirement, and on the premise of meeting the assembly requirement, the occupied space of the filter element assembly during transportation can be effectively reduced, and the transportation cost is reduced; 2) Because the width of filter core assembly can nimble change, to the filter core assembly of a model, can design not unidimensional filter main part, perhaps, control motor rotational speed through the compression degree that changes filter core assembly in same filter main part, promote air filter overall structure design flexibility.

Some embodiments are not shown in the drawings, in which the deformation fold line 230 is not provided in the folding deformation portion 220, and the folded state of the folding deformation portion 220 is a state in which the paper surface of the region is curved in a direction toward the cartridge body 1 or away from the cartridge body 1, and the edge line of the paper surface is a curve without turning edges; the fold deformation 220 can also be gradually unfolded as the cartridge body is unfolded, with the degree of curvature of the paper surface gradually decreasing. In this embodiment, in the folded state of the maximum extent, the two side surfaces of the folded deformation portion 220 cannot be mutually attached after being bent, and a certain gap is provided, and at the same time, two adjacent folding planes of the filter element main body 1 cannot be mutually attached.

In some variant embodiments, referring to fig. 1 to 8, the folding deformation 220 is formed with deformation fold lines 230, the deformation fold lines 230 extending from the junction 211 of two adjacent fold lines 210 to the edge of the folding deformation 220 opposite the junction 211. The deformed folding line 230 is a linear folding line. The deformation fold line 230 can limit the folding state of the folding deformation portion 220 when folding, ensure that the folding deformation portion 220 can protrude towards the concave structure of the filter element main body 1 or towards the direction deviating from the filter element main body 1 according to the design, and ensure that the structural change is controllable in the folding and telescoping process.

On the basis of the above-described embodiments, referring to fig. 1 to 8, the deformed fold line 230 extends along the angular bisector of the corresponding two fold lines 210. In this embodiment, the same folding deformation portion 220 has a deformation fold line 230, in the most folded state, the two side surfaces of the folding deformation portion 220 can be mutually attached after being bent, and the adjacent two folding planes of the filter element main body 1 can also keep a smaller distance, so that the volume of the filter element assembly after being fully folded can be reduced to the greatest extent, and the space occupied by transportation can be reduced to the greatest extent.

In some embodiments, not shown in the figures, in the same folding deformation portion 220, a plurality of deformation fold lines 230 are provided, and the plurality of deformation fold lines 230 are radially distributed with the corresponding intersection point 211 as an origin. The plurality of deformation fold lines 230 can provide a more effective guiding function in the concave or convex change of the folding deformation portion 220 during folding, so that the structural change controllability of the paper frame during folding is stronger. Based on this, one of the deformed fold lines 230 extends along an angular bisector of the corresponding two fold lines 210, thereby enabling a maximum reduction in the volume of the cartridge assembly after full folding.

In some more specific embodiments, in order to make the deformation of the folding deformation 220 more uniform and symmetrical, the angles between two adjacent deformation fold lines 230, and between the deformation fold lines 230 and the adjacent fold lines 210, are equal.

In some embodiments, to reduce the volume of the cartridge assembly in its thickness, the edge of the fold deformation 220 opposite the intersection 211 is a straight edge, as shown in fig. 1-8. Through adopting the structure of this embodiment, on the basis of reducing the manufacturing degree of difficulty of paper frame 2, can also effectively strengthen the structural strength of the regional at straight line type edge place on the paper frame 2, promote the structural stability of paper frame 2. The present embodiment shows a structure in which the fold deformation 220 is fully flattened to have an isosceles triangle shape.

In some variant embodiments, not shown in the figures, the edge of the fold deformation 220 opposite the junction 211 is a curved edge (for example, an arc edge, a wavy edge, etc.). The embodiment can also meet the requirement of folding deformation, and meanwhile, the flexibility of the appearance design of the filter element assembly is enhanced, and the texture of products is improved.

In some embodiments, the filter element main body 1 is folded to be of a zigzag structure with equal height, as shown in fig. 1 to 8, the thickness of the whole filter element main body 1 is uniform, and the filtering effect is ensured to be controllable.

On the basis of the above embodiment, referring to fig. 7, in a plane perpendicular to the paper surface of the cartridge body 1 (i.e., a plane parallel to the folding telescopic path of the cartridge body 1 and perpendicular to the folding line of the cartridge body 1), the orthographic projection of the fold line 210 coincides with the orthographic projection of the straight-side segment 110, and the fold line 210 is equal in length to the straight-side segment 110. In this embodiment, the paper frame 2 completely covers the filter element main body 1 in the width direction, so that the paper frame 2 and the filter element main body 1 can be kept in a sealing connection state without gaps, and the filtering effect is ensured. In this embodiment, two adjacent fold lines 210 directly intersect to form an intersection 211.

In some variant embodiments, the orthographic projection of the fold line 210 coincides with the orthographic projection of the straight segment 110 in a plane perpendicular to the plane of the sheet of the cartridge body 1, but the length of the fold line 210 is less than the length of the straight segment 110, as shown in fig. 8. In this embodiment, the paper frame 2 cannot completely cover the filter element main body 1 in the width direction, and a space (i.e., a small triangle area on the upper part in fig. 8) is formed between the paper frame 2 and the filter element main body 1, based on which a sealing shielding part can be correspondingly arranged on the frame of the filter main body to cover the space area, so that air is prevented from directly flowing through the area. In this embodiment, the extensions of two adjacent fold lines 210 intersect to form an intersection 211.

Based on the same inventive concept, the embodiment of the application also provides an air filter, which comprises a filter main body and the filter element assembly, wherein the filter element assembly is arranged in the frame of the filter main body, and the paper frame 2 and/or the filter element main body 1 are/is connected with the frame.

Compared with the prior art, the air filter provided by the embodiment has the advantages that the transportation cost of the filter element assembly is reduced by adopting the filter element assembly, the production cost of manufacturers is reduced, and the quality sense of the product use can be improved by improving the structural design flexibility of the air filter.

In some embodiments, during normal operation of the air filter, the unfolded state of the filter element body 1 needs to be kept stable, and in order to keep the unfolded state of the filter element body 1, the frame is provided with a hook (not shown in the figure), and the hook is in clamping fit with the linear edge 120 of the filter element body 1 in the folding and stretching direction of the filter element body 1. The linear edge 120 is directly pressed to deform the area, so that the linear edge 120 is separated from the clamping hook, and the disassembly of the filter element assembly is completed.

On the basis of the above embodiment, if the adjustment of the folding degree of the filter element assembly is implemented in the same air filter, an adjustment structure is further required to be provided in the filter body, for example, the frame is set to be a telescopic frame with adjustable width in the folding and telescopic direction of the filter element assembly.

The foregoing description of the preferred embodiments of the utility model is not intended to be limiting, but rather is intended to cover all modifications, equivalents, and alternatives falling within the spirit and principles of the utility model.

Claims (10)

1. A filter cartridge assembly, comprising:

a filter element main body which is folded to be a zigzag structure; and

the paper frame is arranged at the sawtooth edge of the filter element main body and is provided with fold lines corresponding to the straight edge sections of the sawtooth edge one by one, and the straight edge sections of the filter element main body are connected to the fold lines of the paper frame one by one;

and a folding deformation part is formed between two adjacent folding lines, and the folding deformation part is sunken towards the filter element main body in a folding state, or is protruded in a direction deviating from the filter element main body in the folding state.

2. The filter cartridge assembly of claim 1 wherein said fold deformations are formed with deformed fold lines extending from the intersection of adjacent two of said fold lines to a side edge of said fold deformations opposite said intersection.

3. The cartridge assembly of claim 2, wherein the deformed fold line extends along an angular bisector of the corresponding two fold lines.

4. The filter element assembly according to claim 2, wherein a plurality of said deformation folds are provided in the same folding deformation portion, and a plurality of said deformation folds are radially distributed with respect to the intersection point as an origin.

5. The filter cartridge assembly of claim 2, wherein a side edge of the fold formation opposite the intersection is a straight edge.

6. The filter cartridge assembly of claim 2, wherein a side edge of the pleated shape opposite the intersection is a curvilinear edge.

7. The filter cartridge assembly of claim 1, wherein the filter cartridge body is folded in a zigzag configuration of equal height.

8. The filter cartridge assembly of claim 7 wherein the orthogonal projection of said fold line coincides with the orthogonal projection of said straight edge segment in a plane perpendicular to the plane of the filter cartridge body page, and wherein said fold line is of equal length to said straight edge segment.

9. An air filter comprising a filter body and a filter element assembly according to any one of claims 1 to 8, said filter element assembly being disposed within a frame of said filter body, said paper frame and/or said filter element body being connected to said frame.

10. The air filter of claim 9, wherein the rim is provided with a catch that snap fits with a straight edge of the filter element body in a folded telescoping direction of the filter element body.