JP2013126644A - Filter and air conditioner - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a filter which can be easily manufactured by simplifying its structure and which can divide two or more air passages by a simple structure.SOLUTION: The filter 10 for an air conditioner is arranged so as to extend over an indoor air passage and an outdoor air passage which are partitioned and formed in a filter case and is constituted by joining end plates 13 to both width end parts 11b of a filter base material 11 which is formed by folding a filter medium sheet 12 in a pleat shape. One sheet size of a pleat piece 12a at an end part of the filter medium sheet 12 in a pleat arranging direction becomes a free end not fixed to the end plate 13 and a pleat part 11a having the free end is superposed on the pleat part 11a having the free end of an adjacent filter medium sheet 12 to constitute a superposition part. This superposition part forms a partition part 14 between indoor air and outdoor air.

Description

  The present invention uses, for example, a filter suitable for a cabin filter or the like disposed so as to straddle an outside air passage for introducing outside air into a passenger compartment of an automobile and an inside air passage for circulating air inside the passenger compartment. It relates to the air conditioner.

  In general, cabin filters, air conditioning filters, deodorizing filters, and the like are used for the purpose of removing impurities in the air and removing odor components. In these filters, in order to improve the filtration performance, the surface area (filtration area) is increased by forming a filter base material by pleating a filter material sheet. End plates are fixed to both width end portions of the filter base material with an adhesive such as a hot melt adhesive in order to maintain the shape of the filter base material.

  An air conditioner provided with this type of filter is disclosed in Patent Document 1. In this air conditioner, a partition that divides the air passage between the outside air and the inside air is provided in a rectangular frame disposed in the air conditioning case. A total of a pair of filters through which the outside air and the inside air pass are disposed in the chambers on both sides of the partition. Then, the outside air and the inside air are individually filtered by a pair of filters.

JP 2002-310453 A

  However, in the conventional filter described in Patent Document 1, a frame is used, and in order to form an independent air passage in the frame, a partition portion must be provided, and the configuration is complicated. There was a problem that production was troublesome and led to cost increase.

  Accordingly, an object of the present invention is to provide a filter and an air conditioner that can simplify the configuration and facilitate manufacture, and can partition a plurality of air passages with a simple configuration.

  In order to achieve the above object, the filter according to the first aspect of the present invention is a filter in which end plates are fixed to both width end portions in the heel extension direction of a filter base material formed by folding a filter material sheet. The filter base material is configured by continuously arranging a plurality of filter medium sheets in the cocoon arrangement direction, and the ridge part at the end part in the cocoon arrangement direction of each filter medium sheet is overlapped with the ridge part of another adjacent filter medium sheet. In addition, the end portions of the end plates adjacent to each other in the ridge arrangement direction are joined together.

  A filter according to a second aspect of the present invention is the filter according to the first aspect, wherein at least one of the flanges is a free end not fixed to the end plate, and the flange of the free end is an adjacent filter medium. It is characterized by being superimposed on the buttock of the sheet.

  According to a third aspect of the present invention, there is provided the filter according to the first or second aspect of the present invention, wherein the position of the overlaid flange is such that the ratio of the filtration area of each filter medium sheet is air passing through the filter medium sheet. It is determined so as to correspond to the flow rate.

  A filter according to a fourth aspect of the present invention is the invention according to any one of the first to third aspects, wherein the filter material sheet is formed by combining a coarse filter and a fine filter. It is characterized by.

  The air conditioner according to a fifth aspect of the present invention has an inside air passage through which air in the passenger compartment is circulated and an outside air passage through which outside air is introduced, and is according to any one of claims 1 to 4. These filters are incorporated so that separate filter medium sheets are positioned in the inside air passage and the outside air passage, respectively.

According to the present invention, the following effects can be exhibited.
In the present invention, the filter base material is composed of a plurality of folded filter media sheets, and the flanges at the ends of each filter media sheet in the cocoon arrangement direction are overlapped, and the overlap portion is a partition portion of the air flow path. It has become. For this reason, a partition part has a large ventilation resistance, and can divide and filter air independently. And a partition part is simply comprised only by the superimposition of the filter material sheet | seat, Therefore, it can manufacture easily.

The perspective view which shows the filter in one Embodiment of this invention. The front view which decomposes | disassembles and shows the state which manufactures the filter. Explanatory drawing which shows the effect | action of a filter. The front view which decomposes | disassembles and shows the state which manufactures the filter of another example of this invention. The front view which decomposes | disassembles and shows the state which manufactures the filter of the further another example of this invention. The front view which decomposes | disassembles and shows the state which manufactures the other filter of this invention.

DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, embodiments embodying the present invention will be described in detail with reference to FIGS.
As shown in FIG.1 and FIG.2, the filter base material 11 is comprised by bending the two filter media sheet | seats 12 formed with the nonwoven fabric etc. in the pleat shape, and the some collar part 11a is formed. End plates 13 are fixed to both width end portions 11b of the filter media sheets 12 in the eaves extending direction, and a filter 10 for an air conditioner is formed. Adherence between the both width end portions 11b of the filter medium sheet 12 and the end plate 13 is, for example, in a state where the width end portion 11b of the filter medium sheet 12 is fitted into a zigzag assembly groove (not shown) formed in the end plate 13, This fitting is performed by heat-sealing or bonding with an adhesive. Alternatively, the pleated filter medium sheet 12 may be heat-sealed to the flat side surface of the end plate 13 or simply bonded with an adhesive. These end plates 13 hold the folded shape of the filter material sheet 12 and define an air filtration passage. In addition, in each drawing, the number of the collar parts 11a (or trough part) of the filter-medium sheet | seat 12 is drawn fewer than actual.

  The filter medium sheet 12 is formed of a thermoplastic resin such as polypropylene resin (PP, melting point 150 to 165 ° C.) or polyethylene terephthalate resin (PET, melting point 256 to 264 ° C.), and the end plate 13 is formed of polypropylene resin or polyethylene resin (PE, And a thermoplastic resin having a melting point of 107 to 140 ° C.).

  In this embodiment, the ridges 11a at the ends of both filter media sheets 12 are overlapped one by one, and the overlapping portion partitions the air passage passing through the filter base material 11 into two partitions (boundary portions) 14 and It has become. For example, one filter medium sheet 12 filters the inside air with the partition 14 as a boundary, and the other filter medium sheet 12 filters the outside air. The position of the partition 14, that is, the area of each of the two filter material sheets 12 is determined so that the ratio of the filtration area through which the inside air passes and the filtration area through which the outside air passes correspond to the flow rate of the inside air and the flow rate of the outside air. .

  For example, when the flow rate of the inside air is 70% by volume and the flow rate of the outside air is 30% by volume, the filtration area of the filter medium sheet 12 through which the inside air passes is 70% and the filtration area of the filter medium sheet 12 through which the outside air passes is 30%. The position of the partition 14 is determined so that This filtration area is an area when the filter material sheet 12 is developed so that the flange portion 11a disappears. Therefore, even if the projection areas of both filter media sheets 12 are the same, the filtration areas are different if the density and height of the flanges 11a are different.

  As shown in FIG. 3, the filter 10 is disposed in a filter case 15 constituting an air conditioner, and an end plate 13 is detachably supported on a receiving surface (not shown) of the filter case 15. A partition wall 18 that partitions the inside air passage 16 and the outside air passage 17 is provided in the filter case 15. The inside air in which the air in the vehicle interior is circulated by a fan (not shown) and the outside air introduced from the outside of the vehicle reach the filter 10 through the inside air passage 16 and the outside air passage 17, respectively.

  The partition 14 of the filter 10 is located at a position corresponding to the partition wall 18 in the filter case 15. In the filter 10, the filter medium sheet 12 on the side through which the inside air passes is configured by a filter for the inside air with a coarse filter, and the filter medium sheet 12 on the side through which the outside air passes is configured by a filter for the outside air with a fine filter. Therefore, the inside and outside air can be appropriately filtered by the filter medium sheet 12 corresponding to each property. The filter medium sheet 12 to which the end plate 13 is fixed is configured to be exchangeable when dirt is accumulated.

  An evaporator (not shown) serving as a heat exchanger for cooling is disposed downstream of the filter 10, and the inside air or the outside air flowing out from the filter 10 is subjected to heat exchange in accordance with a normal method in the evaporator, and then a predetermined outlet. It is designed to be blown into the passenger compartment.

Next, a method for manufacturing the filter 10 will be described.
As shown in FIG. 2, end plates 13 are fixed to both width end portions 11 b of the pair of filter media sheets 12, and one side forming the flange portions 11 a at the ends of the filter media sheets 12 in the cocoon arrangement direction. The flange 12 a is a free end that is not joined to the end plate 13. Then, one ridge portion 11a at the end portion in the ridge arrangement direction of one filter medium sheet 12 is superimposed on one ridge portion 11a at the end portion in the ridge arrangement direction of the other filter medium sheet 12 to form an overlapped portion. By doing so, both the filter media sheets 12 are integrated, and the end surfaces 13a of the both end plates 13 are abutted.

  In the obtained filter 10, the two filter medium sheets 12 are overlapped at the overlapping portion of the filter medium sheet 12, and the ventilation resistance is larger than the other parts of the filter medium sheet 12, and the air is Almost no passing. For this reason, the overlapping portion serves as a partitioning portion 14 that partitions the inside air passage 16 and the outside air passage 17 and can prevent communication between the inside air and the outside air in both the passages 16 and 17.

Next, an effect | action is demonstrated about the filter 10 comprised as mentioned above.
Now, as shown in FIG. 1, in the filter 10 of the present embodiment, an overlapping portion formed by overlapping one pile is provided at the intermediate portion of the folded filter base material 11, and the overlapping portion is A partition 14 is provided to partition the flow of the inside air and the outside air. For this reason, as shown in FIG. 3, the inside air from the inside air passage 16 and the outside air from the outside air passage 17 reach the filter base material 11 independently in a state where they are separated by the partition portion 14. Each is filtered. Therefore, unlike the prior art, it is not necessary to provide a frame for accommodating the filter base material 11 and provide a partition portion in the frame to partition the flow of the inside air and the outside air.

  Further, when the filter 10 is manufactured, as shown in FIG. 2, for the pair of filter media sheets 12 in which the end plates 13 are joined to the both width end portions 11 b, the flange portions 11 a at the end portions in the wrinkle arrangement direction are respectively provided. The flange 12a on one side to be formed is a free end that is not joined to the end plate 13. Then, one flange 11a at the end of one filter medium sheet 12 is overlaid on one flange 11a at the end of the other filter medium sheet 12, and the end surfaces 13a of both end plates 13 are abutted and joined. In this way, the filter 10 having the partition 14 at the center can be quickly manufactured.

  As shown in FIG. 3, when the filter 10 having the partition 14 at the center is disposed in the filter case 15, the filter case is disposed on the upstream side and the downstream side of the filter 10. It is located at a location corresponding to 15 partition walls 18. For this reason, the inside air passing through the inside air passage 16 passes through one filter medium sheet 12 and at the same time, the outside air passing through the outside air passage 17 passes through the other filter medium sheet 12, and both ventilations are appropriately partitioned by the partition section 14. Pass through the filter 10.

Accordingly, the inside air passing through one filter medium sheet 12 captures fine dust, dust and the like, and the outside air passing through the other filter medium sheet 12 captures relatively large dust (dust).
The effects exhibited by the above embodiment will be described together below.
(1) In the filter 10 in this embodiment, the filter base material 11 is composed of two filter media sheets 12 that are folded, and the ends of the filter media sheets 12 in the cocoon arrangement direction are overlapped by one pile, The overlapping portion serves as a partition 14 for the inside air and the outside air. For this reason, the partition part 14 which lets internal air and external air pass independently is comprised simply by superimposing the edge part in the cocoon arrangement direction of the filter media sheet 12. That is, in the partitioning section 14, two filter media sheets 12 are overlapped to increase the airflow resistance, so that the inside air and the outside air can be separated and allowed to pass independently.

Therefore, according to the filter 10 of the present embodiment, the configuration can be simplified, the mixing of the inside air and the outside air in the portion of the filter 10 can be prevented, the manufacturing can be facilitated, and the cost can be reduced. The effect of being able to be demonstrated.
(2) One side flange 12a constituting the flange 11a at the end of the filter material sheet 12 in the flange arrangement direction is a free end not fixed to the end plate 13, and the flange 11a having the free end is an adjacent filter medium. An overlapping portion was formed by overlapping the flange portion 11 a of the sheet 12. For this reason, the partition part 14 can be rapidly formed only by mounting the collar part 11a of the other filter medium sheet 12 on the collar part 11a of one filter medium sheet 12.
(3) The position of the partition portion 14 is determined so that the ratio of the filtration area of the filter medium sheet 12 through which the inside air passes and the filtration area of the filter medium sheet 12 through which the outside air passes correspond to the flow rate of the inside air and the flow rate of the outside air. The Accordingly, it is possible to exert a good balance between the filtration performance of the inside air and the outside air, and it is possible to extend the life of the filter medium sheet 12 and improve the filtration function.
(4) In the filter base 11, the filter medium sheet 12 through which the inside air passes is constituted by a filter for the inside air having a coarse filter, and the filter medium sheet 12 through which the outside air passes is constituted by a filter for the outside air having a fine filter. Therefore, it is possible to appropriately filter the inside air and the outside air corresponding to each property.
(5) Both filter media sheets 12 can be replaced independently. For this reason, for example, when one of the filter medium sheets 12 is dirty and clogged, only the filter medium sheet 12 can be replaced.

It should be noted that the above-described embodiments may be modified as follows.
A plurality of ridges 11 a at the end of the filter sheet 12 in the cocoon arrangement direction may be overlapped to form a plurality of piles, for example, two ridges to form an overlapped portion. That is, as shown in FIG. 4, when the two piles are overlapped, one filter medium sheet 12 has one half of the ridges 12 a of the ridges 11 a at the end in the ridge arrangement direction of the filter sheet 12, that is, three sheets. The flange 12 a is a free end that is not joined to the end plate 13. The other filter media sheet 12 is a free end where one side flange 12 a of one flange 11 a at the end of the filter media sheet 12 in the ridge arrangement direction is not joined to the end plate 13. And the overlapping part can be formed by integrating so that the collar part 11a which has the free end of both the filter material sheets 12 may overlap.

When comprised in this way, the width | variety of the partition part 14 can be expanded, ventilation resistance can be increased, and the division | segmentation of inside air and outside air can be made more appropriate.
As shown in FIG. 5, even if only one piece 12a of one filter material sheet 12 is a free end that is not fixed to the end plate 13, one piece 12a of each of the two filter material sheets 12 may overlap each other. Good.

  As shown in FIG. 6, one filter medium sheet 12 is not provided with a free end, and two ridges 12 a for one pile of the other filter medium sheet 12 are set as free ends not fixed to the end plate 13. Mountain ridges 11a may be overlapped.

The overlapping portion constituting the partition portion 14 can be configured by overlapping three or more ridges 11a at the end of the filter medium sheet 12 in the ridge arrangement direction.
The joining of the butted portions of the end faces 13a of the both end plates 13 may be performed by fitting the end faces 13a of the both end plates 13 with an unevenness, adhering with an adhesive simultaneously with the uneven fitting, or by heat-sealing. it can.

-It is also possible to join the filter media sheets 12 forming the overlapping portion with an adhesive or to heat-seal them.
-You may join the butt | matching part of the said both end plates 13 with an adhesive agent.

-Three or more filter media sheets 12 may be continuous.
-You may use the filter 10 of this invention as a filter of a house air conditioner and a house ventilator.

  DESCRIPTION OF SYMBOLS 10 ... Filter, 11 ... Filter base material, 11a ... Gutter part, 11b ... Width end part, 12 ... Filter material sheet, 12a ... Gutter piece, 13 ... End plate, 16 ... Inside air path, 17 ... Outside air path

Claims (5)

A filter in which end plates are fixed to both end portions in the heel extension direction of the filter base formed by folding the filter material sheet,
The filter base material is constituted by continuously arranging a plurality of filter medium sheets in the cocoon arrangement direction, overlapping the ridge part of the end part in the cocoon arrangement direction of each filter medium sheet with the ridge part of another adjacent filter medium sheet, A filter characterized by joining end portions of end plates adjacent to each other in the arrangement direction. The at least one piece of the flange is a free end that is not fixed to the end plate, and the flange at the free end is overlapped with the flange of an adjacent filter medium sheet. filter. The position of the overlapping ridge part is determined so that a ratio of a filtration area of each filter medium sheet corresponds to a flow rate of air passing through the filter medium sheet. The filter described. The filter according to any one of claims 1 to 3, wherein the filter material sheet is configured by combining a coarse filter and a fine filter. 5. An internal air passage through which air in the passenger compartment is circulated and an external air passage through which external air is introduced, wherein the filter medium sheet is a separate internal air passage for each of the filters according to claim 1. And an air conditioner incorporated so as to be located in the outside air passage.