JP2018015701A - Filter element and housing structure of filter element - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a filter element capable of improving filtration performance.SOLUTION: A filter element 10 is provided with a pleated filter medium 12 and a pair of end plates 20 fixed to both ends of pleats 14 of the filter medium 12 in a ridge line direction W. Extension parts 16 extended outside from the pair of end plates 20 in an arranged direction L are disposed respectively at both ends of the filter medium 12 in the arranged direction L. Each extension part 16 has a pair of expansion parts 18 respectively expanded outside from the inside surfaces of the pair of end plates 20 in the ridge line direction W. The pair of expansion parts 18 are fixed to end surfaces 22 at the pair of end plates 20 in the arranged direction in a state of folding respective extension parts 16.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a filter element including a pair of end plates fixed to both ends in a ridge line direction of the ridge in the filter medium and a filter member that is folded in a fold, and a storage structure that stores the filter element inside a frame member.

  For example, an air conditioner of an automobile is provided with a filter element that filters air for air conditioning (see, for example, Patent Document 1). The filter element includes a filter material that has been folded and a pair of end plates that are bonded to both ends of the filter medium in the ridge line direction.

  The air conditioner is provided with a frame member having a peripheral wall surrounding the outer periphery of the filter element. The filter element is attached to the air conditioner while being accommodated inside the frame member.

JP 2011-194364 A

  By the way, due to the manufacturing tolerance of the end plate, the deviation when the end plate is bonded to the filter medium, and the like, as shown in FIG. In some cases, a step 160 may occur. In this case, as shown in FIG. 10, when the filter element 110 is accommodated in the frame member 130, a gap 162 is formed between the peripheral wall 132 of the frame member 130 and the end portion 116 of the filter medium 112 due to the step 160. Arise. Therefore, foreign matter such as dust flows into the downstream side of the filter element 110 through the gap 162. As a result, this contributes to a decrease in the filtration performance of the filter element 110.

  An object of the present invention is to provide a filter element capable of improving filtration performance and a filter element housing structure.

  A filter element for achieving the above object includes a filter medium folded in a fold and a pair of end plates fixed to both ends of the filter medium in the ridge line direction. When the ridge line direction of the filter medium ridge is defined as the ridge line direction, and the alignment direction of the filter medium ridge is defined as the alignment direction, the end of the filter medium in the alignment direction is located outside of the pair of end plates in the same alignment direction. The extension part has a pair of extension parts that are each extended outward in the ridge line direction from the inner side surfaces of the pair of end plates.

  According to this configuration, the extending portion of the filter medium has a pair of extended portions that are extended outward in the ridge line direction from the inner side surfaces of the pair of end plates. For this reason, when the filter element in a state in which the extension portion is folded back is accommodated in the frame member, it is possible to realize a state in which the end surfaces in the arrangement direction of the pair of end plates are in contact with the pair of extension portions, respectively. it can. Thereby, it is suppressed that a clearance gap arises between the surrounding wall of a frame member, and the edge part of the alignment direction in a filter medium. Therefore, filtration performance can be improved.

  A filter element housing structure for achieving the above object includes the filter element and a frame member having a peripheral wall surrounding an outer periphery of the filter element, and the filter element is housed in the frame member And the extended portion of the filter medium is folded back, and the pair of extended portions in the extended portion are sandwiched between the end surfaces of the pair of end plates and the peripheral wall.

  According to this configuration, it is possible to suppress a gap from being generated between the peripheral wall of the frame member and the end portion in the alignment direction of the filter medium. Therefore, filtration performance can be improved.

  According to the present invention, the filtration performance can be improved.

The perspective view which shows a filter element and a frame member spaced apart up and down about one Embodiment of a filter element and the accommodation structure of a filter element. The expansion perspective view which expands and shows centering on the edge part of the filter element of the embodiment. The top view which shows the state in which the filter element of the embodiment is accommodated in the frame member. The enlarged plan view which expands and shows a part of FIG. The expanded view of the filter medium in the embodiment. It is a figure for demonstrating the procedure which manufactures the filter element of the same embodiment, Comprising: A filter medium, an end plate, and a jig | tool are shown mutually spaced apart. It is a figure for demonstrating the procedure which manufactures the filter element of the embodiment, Comprising: The perspective view which shows the state in which a pair of end plate was adhere | attached with respect to the filter medium attached to the jig | tool. The perspective view which shows the filter element and frame member in a modification spaced apart up and down. The perspective view which shows the state in which the level | step difference has arisen between the edge part of the row direction of the wrinkles in a filter medium, and the end surface of an end plate about the conventional filter element. The top view which shows the state in which the filter element shown in FIG. 9 was accommodated in the frame member.

Hereinafter, with reference to FIGS. 1 to 7, an embodiment in which the present invention is embodied as a filter element of an automobile air conditioner and its housing structure will be described.
First, the configuration of the filter element 10 will be described with reference to FIGS.

  As shown in FIG. 1, the filter element 10 is fixed to both ends of a filter material 12 that has been folded and a ridge line direction (hereinafter abbreviated as a ridge line direction W) of the filter 14 in the filter medium 12 with a hot melt adhesive. And a pair of end plates 20 each having a rectangular plate shape, and has a rectangular shape in plan view as a whole.

The filter medium 12 and each end plate 20 of this embodiment are each formed of a nonwoven fabric made of synthetic resin fibers.
At both ends of the filter medium 12 in the arrangement direction of the ridges 14 (hereinafter, abbreviated as the arrangement direction L), extending portions 16 that extend outward in the arrangement direction L from the pair of end plates 20 are provided. Yes.

  As shown in FIGS. 1, 2, and 5, each extending portion 16 has a pair of extending portions 18 that are extended outward in the ridge line direction W from the inner side surfaces of the pair of end plates 20. . With the extended portions 16 folded back, the pair of extended portions 18 are fixed to the end surfaces 22 in the alignment direction L of the pair of end plates 20 via a hot melt adhesive. Each extending portion 18 has a rectangular shape having the same size as the end surface 22 in the arrangement direction L of the end plate 20.

That is, as shown in FIGS. 4 and 5, the expansion width w <b> 1 of each expansion portion 18 is set to be the same as the width w <b> 2 of the end surface 22 of each end plate 20.
As shown in FIGS. 2 and 5, the height h <b> 1 of each extension 18 is set to be the same as the height h <b> 2 of the end surface 22 of each end plate 20.

Next, the configuration of the frame member 30 that houses the filter element 10 will be described with reference to FIGS. 1, 3, and 4.
As shown in FIG. 1, the frame member 30 is detachably provided inside a case (not shown) of the air conditioner, and includes a square frame-shaped peripheral wall 32 that surrounds the outer periphery of the filter element 10. The peripheral wall 32 includes a pair of rectangular plate-like first wall portions 34 that are parallel to each other, and a pair of rectangular plate-like second wall portions that are parallel to each other and connect the ends of the pair of first wall portions 34 to each other. 36.

  A partition wall 38 extends along the first wall portion 34 between the pair of first wall portions 34. The partition wall 38 is provided in the vicinity of one of the pair of first wall portions 34 (the first wall portion 34 on the right side of the figure).

  A single lattice 40 extends along the first wall 34 between the partition wall 38 and the first wall 34 on the other side (the left side of the figure). Between the pair of first wall portions 34, two lattices 42 are extended along the second wall portion 36 at intervals. These lattices 40 and 42 are located at the downstream end (the lower end in the figure) of the frame member 30.

  At the upstream end (the upper end in the figure) of each first wall portion 34, two claw portions 44 are provided so as to protrude inward at a distance from each other. The lift of the filter element 110 from the frame member 30 is regulated by the claw portions 44.

The frame member 30 is integrally formed of a hard synthetic resin material.
Next, a manufacturing procedure of the filter element 10 will be described with reference to FIGS.
First, as shown in FIG. 5, valley-fold folds F <b> 1 and mountain-fold folds F <b> 2 are alternately formed on the substantially rectangular sheet-shaped filter medium 12. The folds F1, F2 are formed at equal intervals.

Thereby, as shown in FIG. 6, the filter medium 12 is folded.
Subsequently, the folded filter medium 12 is placed on a jig 50 in which peaks and valleys are alternately formed. At this time, the crests and troughs of the jig 50 and the crests and troughs of the filter medium 12 coincide with each other, so that the interval between the adjacent ridges 14 of the filter medium 12 is fixed.

  Subsequently, as shown in FIG. 7, the end plates 20 coated with the hot melt adhesive on the end surface 22 and the inner side surface 24 are pressed and bonded to both ends of the filter medium 12 in the ridge line direction W, respectively. .

Subsequently, as indicated by arrows in the figure, the extended portions 16 on both sides of the filter medium 12 are folded back, and the extended portions 18 are pressed against and bonded to the corresponding end surfaces 22.
Finally, the filter element 10 is removed from the jig 50.

Next, the operation of this embodiment will be described.
As shown in FIGS. 3 and 4, in a state where the filter element 10 is accommodated inside the frame member 30, the pair of extension portions 18 are connected to the end surfaces 22 of the pair of end plates 20 and the peripheral walls 32 of the frame member 30. It is clamped by one wall portion 34. Thereby, it is suppressed that a clearance gap arises between the 1st wall part 34 and the edge part of the alignment direction L in the filter medium 12. FIG.

According to the filter element and the filter element housing structure according to the present embodiment described above, the following effects can be obtained.
(1) At both ends of the filter medium 12 in the alignment direction L, extending portions 16 that extend outward in the alignment direction L from the pair of end plates 20 are provided. Each extending portion 16 has a pair of extended portions 18 that are expanded outward in the ridge line direction W from the inner side surfaces of the pair of end plates 20. In a state in which each extending portion 16 is folded back, the pair of extended portions 18 are fixed to the end surfaces 22 in the arrangement direction L of the pair of end plates 20.

According to such a configuration, the filtering performance can be improved because the above-described effects are exhibited.
(2) In a state in which the extending portion 16 is folded, the pair of extended portions 18 are fixed to the end surfaces 22 in the arrangement direction L of the pair of end plates 20, respectively.

  According to such a configuration, the end surfaces 22 in the arrangement direction L of the pair of end plates 20 and the pair of extended portions 18 are fixed in contact with each other. Thereby, the said effect (1) can be acquired reliably.

  Further, according to the above configuration, since the pair of extension portions 18 are fixed to the pair of end plates 20, the filter element 10 can be easily assembled to the frame member 30.

(3) The expansion width w1 of the pair of expansion portions 18 is set to be the same as the width w2 of the end surfaces 22 of the pair of end plates 20 respectively.
When the extension width w1 of the pair of extension portions 18 is larger than the width w2 of the end surfaces 22 of the pair of end plates 20, the extension portions 18 protrude outward from the outer surface 26 of the end plates 20. Therefore, a gap is formed between the outer side surface 26 of the end plate 20 and the second wall portion 36 of the peripheral wall 32 of the frame member 30 due to the extended portion 18 protruding in this manner, and there is a concern that the filtration performance may be deteriorated.

  In this regard, according to the above configuration, as shown in FIG. 4, since the extension portion 18 does not protrude outward from the outer surface 26 of the end plate 20, the outer surface 26 of the end plate 20 and the peripheral wall 32 of the frame member 30. It is possible to avoid the formation of a gap between the two, and it is possible to avoid a decrease in filtration performance due to the gap.

  (4) Since the expansion width w1 of the pair of expansion portions 18 is set to be the same as the width w2 of the end surface 22 of the pair of end plates 20, the end surfaces 22 of the pair of expansion portions 18 and the pair of end plates 20 are respectively set. Can be maximized. For this reason, the work of adhering the pair of extension portions 18 to the end surfaces 22 in the alignment direction L of the pair of end plates 20 can be easily performed, and the extension portions 18 can be appropriately bonded to the end surfaces 22. it can.

  (5) The pair of extended portions 18 are bonded to the end surfaces 22 of the pair of end plates 20, respectively. For this reason, the pair of extension portions 18 can be easily and reliably fixed to the end surfaces 22 of the pair of end plates 20.

  (6) In a state where the filter element 10 is housed inside the frame member 30, the extending portion 16 of the filter medium 12 is folded back, and the pair of extended portions 18 are formed between the end surface 22 of the pair of end plates 20 and the peripheral wall 32. It is sandwiched between the first wall portion 34.

According to such a configuration, an effect similar to the effect (1) can be obtained.
<Modification>
In addition, the said embodiment can also be changed as follows, for example.

  In the above embodiment, the extended portion 18 of the filter medium 12 is bonded via the hot melt adhesive applied to the end surface 22 of the end plate 20. Instead of this, for example, when the end plate 20 is made of a non-woven fabric containing a binder (adhesive), the end surface 22 of the end plate 20 is heated to melt the binder, and the expanded portion is interposed through the melted binder. 18 may be bonded to the end face 22.

  In place of the adhesive, for example, a convex portion is formed on the extended portion 18 of the filter medium 12 and a concave portion is formed on the end surface 22 of the end plate 20, and the convex portion is fitted into the concave portion to The end face 22 of the end plate 20 may be fixed.

  In the above embodiment, the expansion width w1 of the pair of expansion portions 18 is set to be the same as the width w2 of the end surface 22 of the pair of end plates 20, but the expansion width w1 of the expansion portion 18 is set to be greater than the width w2 of the end surface 22. Can also be reduced.

The height h1 of the extended portion 18 can be made lower than the height h2 of the end surface 22 of the end plate 20.
The pair of extension portions 18 may not be fixed to the end surfaces 22 of the pair of end plates 20. In other words, as shown in FIG. 8, the filter element 10 may be such that the extension portion 16 is folded back so that the pair of extension portions 18 abut on the end surfaces 22 of the pair of end plates 20. In this case, when the filter element 10 is accommodated in the frame member 30, the end surfaces 22 of the pair of end plates 20 and the pair of extended portions 18 of the filter medium 12 are brought into contact with each other. Even in this case, the formation of a gap between the first wall portion 34 of the peripheral wall 32 of the frame member 30 and the end portion in the alignment direction L of the filter medium 12 is suppressed, and the filtration performance can be improved.

  In the embodiment and the modification, the extending portions 16 are formed at both ends of the filter media 12 in the arrangement direction L. However, the extension portions 16 may be formed only at one end of the filter media 12 in the alignment direction L. it can.

  DESCRIPTION OF SYMBOLS 10 ... Filter element, 12 ... Filter medium, 14 ... Saddle, 16 ... Extension part, 18 ... Extension part, 20 ... End plate, 22 ... End surface, 24 ... Inner side surface, 26 ... Outer side surface, 30 ... Frame member, 32 ... Peripheral wall, 34 ... first wall portion, 36 ... second wall portion, 38 ... partition wall, 40, 42 ... lattice, 44 ... claw portion, 50 ... jig.

Claims (6)

In the filter element comprising a pair of end plates fixed to both ends in the ridge line direction of the ridge in the filter medium and the filter medium,
When the ridge line direction of the filter medium ridge is the ridge line direction, and the alignment direction of the filter medium ridge line,
An end portion of the filter medium in the alignment direction is provided with an extending portion extending outward in the alignment direction from the pair of end plates,
The extending portion has a pair of extended portions that are expanded outward in the ridge line direction from the inner side surfaces of the pair of end plates, respectively.
Filter element. In a state where the extension portion is folded, the pair of extension portions are respectively fixed to the end faces in the arrangement direction of the pair of end plates.
The filter element according to claim 1. The extension width of the pair of extension portions is set to be equal to or less than the width of the end face in the pair of end plates, respectively.
The filter element according to claim 1 or 2. The expansion width of the expansion portion is set to be the same as the width of the end surfaces of the pair of end plates,
The filter element according to claim 3. The pair of extension portions are respectively bonded to the end faces of the pair of end plates.
The filter element as described in any one of Claims 1-4. The filter element according to any one of claims 1 to 5,
A frame member having a peripheral wall surrounding the outer periphery of the filter element,
In the state in which the filter element is housed inside the frame member, the extension portion of the filter medium is folded back, and the pair of extension portions in the extension portion are connected to the end surfaces of the pair of end plates and the Sandwiched between the peripheral walls,
Filter element housing structure.

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