KR20220106295A - Dust collecting filter - Google Patents

Abstract

The present invention relates to a dust collecting filter and, more specifically, to a dust collecting filter including a filter unit and a joint unit. The dust collecting filter according to the present invention includes: a first support filter disposed on the upstream side of an air passage and through which air passes; a second support filter disposed on the downstream side of the air passage and through which air passes; and a plurality of filters disposed between the first support filter and the second support filter and filtering foreign matters in the air, wherein the first support filter and the second support filter include: a plurality of filter units in which the filters are disposed between the first support filter and the second support filter; and a joint unit in which joint surfaces are formed on the rest portions of the plurality of filter units.

Description

Dust collecting filter

The present invention relates to a dust collecting filter, and more particularly, to a dust collecting filter including a filter part and a junction part.

In general, an indoor unit or an air purifier of an air conditioner includes an air filter to create a comfortable indoor environment. The air filter is a configuration for purifying air containing contaminants such as dust and bacteria into clean air.

Recently, an air filter, such as a melt blown filter, which is excellent in cleanliness enough to filter ultra-fine dust, etc. has been used.

Melt blown filters can be made of ultrafine fibers compared to filters made of general materials. Therefore, it has excellent flexibility and can be transformed into various shapes, and has the advantage of superior filtering performance compared to other general filters of the same volume.

The prior art (KR 10-2000-0068955) relates to a filter medium for an air purifier to which a melt blown filter can be applied.

1, in the case of a filter of the prior art, it is disposed as a composite layer 11, 12, 13, including a melt blown filter 11, and each of the composite layers is formed by fusion or adhesion. are laminated to each other (14). However, in the parts laminated to each other by fusion or adhesion, the voids are reduced and cause to increase the differential pressure of the air flow. There was a problem with the formation.

KR 10-2000-0068955

The problem to be solved by the present invention is to provide a dust collecting filter having a low differential pressure and maximizing filtration performance.

Another object of the present invention is to provide a dust collecting filter capable of forming a low differential pressure with a simple structure.

Another object of the present invention is to provide a dust collecting filter that is easily bent.

Another object of the present invention is to provide a dust collecting filter with high production efficiency through minimal fusion.

The problems of the present invention are not limited to the problems mentioned above, and other problems not mentioned will be clearly understood by those skilled in the art from the following description.

The dust collecting filter according to the present invention includes: a first support filter disposed upstream of an air flow path, through which air passes; a second support filter disposed downstream of the air flow path and through which air passes; and a plurality of filtration filters disposed between the first support filter and the second support filter to filter foreign substances in the air, wherein the first support filter and the second support filter include the first support filter and the second support filter. A plurality of filter units in which the filtering filters are disposed between the second support filters, and a bonding unit in which a bonding surface is formed on the remaining portions of the plurality of filter units.

In addition, the bonding surface of the bonding portion may be formed by bonding the first support filter and the second support filter to each other by a thermal fusion method.

In addition, the bonding surface of the bonding portion may be formed by bonding the first support filter and the second support filter to each other by an ultrasonic welding method.

In addition, each of the plurality of filtration filters may have a rectangular shape elongated in the longitudinal direction, and the bonding surface of the junction may be formed to correspond to the filter unit on which the filtration filter is disposed.

In addition, the junction portion may be formed in a grid shape including a plurality of vertical joint surfaces and a plurality of horizontal joint surfaces, and the filter unit may be formed to correspond to the grid joint portion.

In addition, the first support filter and the second support filter may have a plurality of peaks and a plurality of valleys, respectively, and may be formed in a shape bent several times.

In addition, the first support filter and the second support filter have a plurality of peaks and a plurality of valleys, respectively, and are formed to be bent multiple times, and the plurality of peaks and the plurality of valleys are the lengths of the junction surface. It may be formed to be perpendicular to the direction.

In addition, the first support filter and the second support filter each have a plurality of peaks and a plurality of valleys formed in a shape bent in multiple times, and the plurality of mountains and the plurality of valleys are formed along the junction surface. can be

In addition, the first support filter and the second support filter have a plurality of peaks and a plurality of valleys, respectively, and are formed in a shape bent into a plurality of times, and the plurality of peaks and the plurality of valleys are formed on the vertical junction surface or horizontally. It may be formed along the bonding surface.

In addition, the plurality of filtering filters may be a melt blown filter.

In addition, the first support filter and the second support filter may be made of a woven fabric or a non-woven fabric.

According to the dust collecting filter of the present invention, there are one or more of the following effects.

First, there is an advantage in that it is possible to provide a dust collecting filter having a low differential pressure including the filter part and the junction part.

Second, there is an advantage in that it is possible to provide a dust collecting filter that maximizes filtration performance with a simple structure including a filter part and a junction part.

Third, there is an advantage in that it is possible to provide a dust collecting filter that is easy to bend including a junction part.

Fourth, there is an advantage that a dust collecting filter with high production efficiency can be provided by minimizing the bonding surface.

Effects of the present invention are not limited to the effects mentioned above, and other effects not mentioned will be clearly understood by those skilled in the art from the description of the claims.

1 is a cross-sectional view showing a filter medium for a conventional air purifier.
2 is a cross-sectional view showing the dust collecting filter of the present invention.
3 is a front view showing a dust collecting filter according to an embodiment of the present invention.
4 is a front view showing a dust collecting filter according to another embodiment of the present invention in which the bonding surface is formed in a grid shape.
5 is a view showing a bent state in which the dust collecting filter according to an embodiment of the present invention is formed in a direction perpendicular to the longitudinal direction of the junction of the mountain and the valley.
6 is a view showing the bent state of the dust collecting filter according to an embodiment of the present invention is formed on the junction of the mountain and the valley.
7 shows an example in which the dust collecting filter of the present invention is disposed in the air conditioner.

Advantages and features of the present invention and methods of achieving them will become apparent with reference to the embodiments described below in detail in conjunction with the accompanying drawings. However, the present invention is not limited to the embodiments disclosed below, but can be implemented in various different forms, and only these embodiments allow the disclosure of the present invention to be complete, and common knowledge in the art to which the present invention pertains It is provided to fully inform those who have the scope of the invention, and the present invention is only defined by the scope of the claims. Like reference numerals refer to like elements throughout.

In the drawings, the thickness or size of each component is exaggerated, omitted, or schematically illustrated for convenience and clarity of description. Also, the size and area of each component do not fully reflect the actual size or area.

The front (F), after (R), left (Le), right (Ri), upper (U), and lower (D) marks shown in the drawings are for explanation of the dust collecting filter according to the present embodiment. Accordingly, if the reference is changed, the direction setting may be differently grasped.

EMBODIMENT OF THE INVENTION Hereinafter, with reference to an accompanying drawing, the dust collection filter of this invention is demonstrated.

2 is a cross-sectional view showing the dust collecting filter of the present invention.

Referring to FIG. 2 , the dust collecting filter of the present invention is disposed on an air flow path, and includes a first support filter 30 , a second support filter 40 , and a filtration filter 20 .

The first support filter 30 is disposed upstream on the path through which the air flows. The first support filter 30 has air permeability. The first support filter 30 may be formed of a porous material or may have a plurality of pores to have air permeability. The first support filter 30 may be made of a woven or non-woven fabric.

The second support filter 40 is disposed downstream on the path through which the air flows. The second support filter 40 has air permeability. The second support filter 40 may be formed of a porous material or may have a plurality of pores to have air permeability. The second support filter 40 may be made of a woven or non-woven fabric.

The first support filter 30 and the second support filter 40 may be made of the same material as each other. The first support filter 30 and the second support filter 40 may have the same shape as each other.

The dust collecting filter of the present invention includes a plurality of filtration filters 20 disposed between the first support filter 30 and the second support filter 40 . The plurality of filtering filters 20 are disposed on the air flow path to filter foreign substances in the air. The plurality of filtering filters 20 may be disposed to be spaced apart from each other. The filtering filter 20 may be a melt blown filter. Melt blown filters have the advantages of being able to be made of microfibers compared to filters made of general materials, so they have excellent flexibility, so they can be easily transformed into various shapes and have excellent filtration performance compared to the same volume.

The first support filter 30 or the second support filter 40 may be a filter that filters relatively large dust among dust in the air. The first support filter 30 or the second support filter 40 may be a pre-filter. The filtering filter 20 may be a filter that filters relatively small dust among dust in the air that is not filtered by the first support filter 30 or the second support filter 40 . The filtration filter 20 , the first support filter 30 , or the second support filter 40 may be made of a porous material, and the pores of the filtration filter 20 are the first support filter 30 or the second support filter 40 . ) may be formed smaller than the pores of the

The first support filter 30 and the second support filter 40 include a plurality of filter units 32 and 42 in which the filtering filter 20 is disposed. The number of filter units 32 and 42 is the same as the number of filter filters 20 . A filtration filter space 53 in which the filtration filter 20 is disposed is formed in each of the plurality of filter units 32 and 42 . The filtering filter space 53 is formed between the first support filter 30 and the second support filter 40 . The filtering filter space 53 may be disposed to be spaced apart from each other. The shape of the filtration filter space 53 may correspond to the shape of the filtration filter 20 .

The first support filter 30 may be disposed on one side of both surfaces of the filtration filter 20 , and the second support filter 40 may be disposed on the other side of the filtering filter 20 . The filtering filter 20 is disposed without being adhered or fused to the first support filter 30 . The filtering filter 20 is disposed without bonding or fusion with the second support filter 40 . The first support filter 30 and the second support filter 40 may support the filtration filter 20 . The first support filter 30 and the second support filter 40 may fix the filtration filter 20 .

The first support filter 30 and the second support filter 40 may include junctions 31 and 41 . The bonding portions 31 and 41 include a bonding surface 51 formed by bonding the first support filter 30 and the second support filter 40 to each other. The bonding portions 31 and 41 may include at least one bonding surface 51 . The bonding surface 51 may be formed in the remaining portions of the first support filter 30 and the second support filter 40 in which the plurality of filter units 32 and 42 are not formed. Accordingly, in the first support filter 30 and the second support filter 40 , the portion where the filtering filter 20 is disposed is the filter portions 32 and 42 , and the remaining portion is the joint portion 31 where the joint surface 51 is formed. , 41). The bonding surface 51 may be disposed between the filter units 32 and 42, and may also be disposed at each corner of the dust collecting filter (edge bonding surface 52). In the first support filter 30 and the second support filter 40 , the portion where the bonding surface 51 is formed is the bonding portions 31 and 41 , and the remaining portions are the filter portions 32 and 42 in which the filtration filter 20 is disposed. ) can be The thickness of the bonding portions 31 and 41 may be formed to be thinner than the thickness of the filter portions 32 and 42 . Since the filtration filter 20 is not bonded to the first support filter 30 and the second support filter 40 over the whole, but is bonded only to the junctions 31 and 41 disposed separately, the differential pressure of the air flow as a whole is It has the advantage of being reduced.

The first support filter 30 and the second support filter 40 are made of the same material, and the joint surfaces 51 and the edge joint surfaces 52 of the joint parts 31 and 41 are different from the filter parts 32 and 42 . It can be joined by a fusion bonding method. The joint portions 31 and 41 of the first support filter 30 and the second support filter 40 may be joined by a thermal fusion method. The joint portions 31 and 41 of the first support filter 30 and the second support filter 40 may be joined by friction or ultrasonic welding. In the case of bonding by the fusion bonding method, unlike the bonding method, since an adhesive is not used, an adhesive layer is not formed, and thus, there is an advantage in that the differential pressure of the air flow is reduced. In the case of bonding by the fusion bonding method, since a separate adhesive is not used, the production cost and production time are reduced, which has the advantage of being economical.

3 is a front view showing a dust collecting filter according to an embodiment of the present invention.

Hereinafter, referring to FIG. 3 , a dust collecting filter according to an embodiment of the present invention will be described.

Each of the plurality of filtering filters 20 may have a rectangular shape elongated in the longitudinal direction. The filtration filter space 53 of the filter parts 32 and 42 may be formed in a shape corresponding to the rectangular filtration filter 20 . The bonding surfaces 51 of the bonding portions 31 and 41 may be formed to extend in parallel with the longitudinal direction of the rectangular filtering filter 20 so as to correspond to the shape of the filtering filter space 53 . When three or more filtering filters 20 are provided, a plurality of bonding surfaces 51 may be provided. When a plurality of bonding surfaces 51 are provided, each bonding surface 51 may be disposed parallel to each other. The width of the bonding surface 51 may vary depending on the thickness and weight of the filtration filter 20 , a fusion method, bonding strength, and materials of the first support filter 30 and the second support filter 40 . When the bonding surface 51 is formed to be elongated in the longitudinal direction, the area occupied by the filtration filter 20 can be maximized, and there is an advantage that filtration performance and filtration reliability can be increased.

4 shows a dust collecting filter according to another embodiment of the present invention in which the bonding surface 51 is formed in a grid shape.

Referring to FIG. 4 , the bonding surfaces 51 of the bonding portions 31 and 41 may include a plurality of vertical bonding surfaces 51a and a plurality of horizontal bonding surfaces 51b, and may be formed in a grid shape. A plurality of vertical bonding surfaces 51a may be provided and disposed at equal intervals from each other. A plurality of horizontal bonding surfaces 51b may be provided and disposed at equal intervals from each other. The shape of the filtering filter space 53 of the filter parts 32 and 42 may be formed in a rectangular or square shape corresponding to the grid-type bonding surface 51 . Corresponding to the shape of the filtering filter space 53 , the filtering filter 20 may have a rectangular shape or a square shape. When the bonding surface 51 is formed in a lattice shape, the area occupied by the filtration filter 20 is reduced, so that the overall pressure difference can be reduced. When the bonding surface 51 is formed in a grid shape, there is an advantage in that the dust collecting filter is easily deformed.

5 and 6 show a state in which the dust collecting filter of the present invention is bent.

The first support filter 30 and the second support filter 40 may have a plurality of peaks 33 and 43 and a plurality of valleys 34 and 44, respectively, and may be formed in a shape bent several times. Any one of the valleys 34 and 44 may be disposed between any two adjacent peaks 33 and 43 among the plurality of mountains 33 and 43 . Any one mountain (33, 43) may be disposed between any two adjacent valleys (34, 44) of the plurality of valleys (34, 44). The plurality of valleys 34 and 44 and the plurality of mountains 33 and 43 may be alternately disposed with each other. A plurality of mountains (33, 43) and a plurality of valleys (34, 44) may be arranged at equal intervals, respectively. The plurality of mountains 33 and 43 and the plurality of valleys 34 and 44 may be formed in both the filter parts 32 and 42 , the joint surface 51 , and the edge joint surface 52 .

Referring to FIG. 5 , the dust collecting filter according to an embodiment of the present invention may be formed such that a plurality of mountains 33 and 43 and a plurality of valleys 34 and 44 are perpendicular to the longitudinal direction of the bonding surface 51 . In this case, the plurality of mountains 33 and 43 and the plurality of valleys 34 and 44 may be formed in both the filter parts 32 and 42 and the junction parts 31 and 41 . In this case, the plurality of peaks 33 and 43 or the plurality of valleys 34 and 44 may be formed in a portion of the edge joint surface 52 . When the dust collecting filter of an embodiment of the present invention is bent as described above, the filtering filter 20 disposed in the filtering filter space 53 of the filter parts 32 and 42 can be stably fixed in the vertical direction. There is this.

Referring to FIG. 6 , in the dust collecting filter of an embodiment of the present invention, a plurality of mountains 33 and 43 and a plurality of valleys 34 and 44 may be formed along the joint surface 51 . The width of the bonding surface 51 may vary depending on the thickness and weight of the filtration filter 20 , a fusion method, bonding strength, and materials of the first support filter 30 and the second support filter 40 . When the mountains 33 and 43 and the valleys 34 and 44 are formed on the joint surface 51 , as the width of the joint surface 51 decreases, the dust collecting filter may be easily bent.

Unlike the above, the dust collecting filter of another embodiment of the present invention may also be bent. The plurality of mountains 33 and 43 and the plurality of valleys 34 and 44 may be formed along the lattice-type joint surface 51 . The plurality of mountains 33 and 43 and the plurality of valleys 34 and 44 may be formed along the vertical joint surface 51a or the horizontal joint surface 51b. As the width of the vertical bonding surface 51a or the horizontal bonding surface 51b becomes thinner, bending of the dust collecting filter may be facilitated in the vertical or horizontal direction.

In the above, preferred embodiments of the present invention have been illustrated and described, but the present invention is not limited to the specific embodiments described above, and in the technical field to which the present invention pertains without departing from the gist of the present invention as claimed in the claims. Various modifications may be made by those of ordinary skill in the art, and these modifications should not be individually understood from the technical spirit or perspective of the present invention.

10: conventional filter
11: filter member
12: first support layer
13: second support layer
14: adhesive side
20: filtration filter
30: first support filter
31, 41: junction
32, 42: filter unit
33, 43: acid
34, 44: Goal
40: second support filter
51: joint surface
51a: longitudinal joint surface
51b: transverse joint surface
52: edge joint surface
53: filtration filter space part
I : Air conditioner indoor unit
O: outlet
Fan : Blowing fan
F: dust filter
H: heat exchanger

Claims (11)

a first support filter disposed upstream of the air flow path and through which air passes;
a second support filter disposed downstream of the air flow path and through which air passes; and
A plurality of filtering filters disposed between the first support filter and the second support filter to filter foreign substances in the air,
The first support filter and the second support filter,
a plurality of filter units in which the filtration filter is disposed between the first support filter and the second support filter, and
A dust collecting filter including a bonding portion having a bonding surface formed on the remaining portions of the plurality of filter units. The method of claim 1,
The joint surface of the joint part,
A dust collecting filter formed by bonding the first support filter and the second support filter to each other by a thermal fusion method. The method of claim 1,
The joint surface of the joint part,
A dust collecting filter formed by bonding the first support filter and the second support filter to each other by an ultrasonic welding method. The method of claim 1,
Each of the plurality of filtration filters has a rectangular shape elongated in the longitudinal direction,
The joint surface of the joint part,
A dust collecting filter formed to correspond to the filter unit in which the filtering filter is disposed. The method of claim 1,
The junction is
It is formed in a grid shape including a plurality of vertical joint surfaces and a plurality of horizontal joint surfaces,
The filter unit is formed to correspond to the lattice type junction filter. The method of claim 1,
The first support filter and the second support filter,
A dust collecting filter in which a plurality of mountains and a plurality of valleys are formed, respectively, and is bent in a plurality of times. 5. The method of claim 4,
The first support filter and the second support filter,
A plurality of mountains and a plurality of valleys are formed, respectively, and it is formed in a shape bent several times,
The plurality of mountains and the plurality of valleys are formed to be perpendicular to a longitudinal direction of the junction surface. 5. The method of claim 4,
The first support filter and the second support filter are
A plurality of mountains and a plurality of valleys are formed, respectively, and it is formed in a shape bent several times,
The plurality of mountains and the plurality of valleys are dust collection filters formed along the junction surface. 6. The method of claim 5,
The first support filter and the second support filter,
A plurality of mountains and a plurality of valleys are formed, respectively, and it is formed in a shape bent several times,
The plurality of mountains and the plurality of valleys are formed along the vertical junction surface or the horizontal junction surface. 5. The method of claim 4,
The plurality of filtration filters are melt blown filters. The method of claim 1,
The first support filter and the second support filter is a dust collection filter made of a woven or non-woven material.

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