JP4429506B2 - air filter - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an air filter provided to remove dust in the air that passes through a heat exchanger incorporated in an air conditioner or the like.
[0002]
[Prior art]
Conventionally, what is shown in FIGS. 9-11 is known as this kind of air filter.
[0003]
As shown in the figure, a rod-shaped material 101 having an L-shaped cross section is bent in the circumferential direction to form a filter frame 102, and an adhesive 104 is applied or dropped onto the flat surface portion 103 having the L-shaped cross section, whereby the dust collecting filter 105 is The air filter 106 was formed by adhering to the flat portion 103.
[0004]
Further, in the case of a long size, the filter frame 107 is divided, and the air filter 110 is formed by adhering the dust collection filter 109 with a gap 108.
[0005]
[Problems to be solved by the invention]
In such a conventional air filter 106, the adhesive 104 is applied or dripped onto the flat portion 103 having an L-shaped cross section, so that the adhesive 104 protrudes and adheres to the dust collecting filter 105 outside the filter frame 102, thereby finishing the appearance. In addition, there is a problem that the performance of the dust collection filter 105 is deteriorated, and it is required that the adhesive 104 does not protrude from the filter frame 102.
[0006]
Further, the rising portion of the filter frame 102 needs to have a height equal to or greater than the thickness of the dust collection filter 105, and there is a problem that the size of the filter frame 102 becomes large. There is a demand for downsizing the filter frame 102 without being affected by the above.
[0007]
Further, since the filter frame 107 is omitted and only the dust collecting filter 109 is provided at the bent portion of the air filter 110, there is a problem that the dust collecting filter 109 is easily loaded and damaged. It is required to increase the strength against bending.
[0008]
The present invention solves such a conventional problem, improves the appearance finish, prevents the performance of the dust collecting filter from being deteriorated, and does not affect the thickness of the dust collecting filter. It is an object of the present invention to provide an air filter that can reduce the size of the frame and that can ensure strength even when a bent portion is provided in the air filter.
[0009]
[Means for Solving the Problems]
In order to achieve the above object, the air filter of the present invention has a filter frame formed by bending a rod-like material having a protruding band at the tip of a flat surface portion having an L-shaped section in the circumferential direction, and the filter frame by the protruding band. It has a dust collecting filter that is bonded and fixed by an adhesive applied or dropped into a groove formed in the filter frame.
[0010]
According to the present invention, it is possible to obtain an air filter that can improve the appearance and prevent the performance of the dust collection filter from being deteriorated.
[0011]
Another means is to provide a compression processing section with a compressed thickness on the entire circumference of the dust collecting filter, and fix the compression processing section to the filter frame by adhesion.
[0012]
According to the present invention, an air filter can be obtained in which the filter frame can be downsized without being affected by the thickness of the dust collection filter.
[0013]
In another means, a notch is provided in the center of the filter frame in the longitudinal direction, leaving a flat portion, so that the filter frame can be bent.
[0014]
ADVANTAGE OF THE INVENTION According to this invention, even if it provides the bending part in the air filter, the air filter which can ensure intensity | strength is obtained.
[0015]
DETAILED DESCRIPTION OF THE INVENTION
The present invention provides a filter frame formed by bending a rod-like material having a protruding band at the front end of an L-shaped cross section in the circumferential direction, and a groove formed in the filter frame by the protruding band on the filter frame. a shall such a dust collecting filter which is fixed by bonding by adhesive applied or dropped, the adhesive is held in the groove of the flat portion, to prevent the adhesive from protruding into the filter outside the frame It has the effect of being able to.
[0016]
In addition, a compression processing unit with a compressed thickness is provided on the entire circumference of the dust collection filter, and this compression processing unit is fixed to the filter frame by adhesion. It has the effect that it can be made smaller than the thickness.
[0017]
In addition, the filter frame can be bent by leaving a flat portion at the center in the longitudinal direction of the filter frame so that the filter frame can be bent. Therefore, the plane portion at the center in the longitudinal direction serves as a hinge and the air filter can be bent. It has the effect of being able to.
[0018]
Embodiments of the present invention will be described below with reference to the drawings.
[0019]
【Example】
Example 1
As shown in FIGS. 1 to 4, the rod-like material 4 is an extruded product made of synthetic resin in which a protruding band 2 is erected at the tip of a flat portion 1 having an L-shaped cross section. A rectangular filter frame 5 is formed by bending. Further, the groove 3 is formed in the filter frame 5 by the protruding band 2.
[0020]
An air filter 8 is formed by applying or dripping adhesive 6 into the groove 3 and fixing the four sides of the dust collection filter 7 to the filter frame 5 by adhesion.
[0021]
At this time, since the adhesive 6 is held in the groove 3, the adhesive 6 is prevented from sticking to the surface of the dust collection filter 7 outside the filter frame 5 by preventing the adhesive 6 from protruding outside the filter frame 5.
[0022]
In the above configuration, the air filter 8 is attached to the filter mounting frame 11 provided in the heat exchanger 10 incorporated in the air conditioner (not shown) via the filter frame 5. At this time, since the filter frame 5 slides inside the filter mounting frame 11, it can be easily attached and detached.
[0023]
The filter frame 5 is an extruded product made of a synthetic resin. By providing the projection 2 on the flat surface portion 1, the strength against bending, twisting, and warping increases.
[0024]
In addition, when the air conditioning capacity of the air conditioner changes and the depth dimension L of the heat exchanger 10 changes, the overall length of the filter frame 5 is set in accordance with the depth dimension L, and the position of the notch 12 in the corner portion is set. Just change it and you can easily handle it.
[0025]
(Example 2)
As shown in FIG. 5 and FIG. 6, a compression processing unit 9 in which the thickness of the dust collection filter 7 is compressed by heat welding or the like is provided on the entire circumference of the dust collection filter 7. The air filter 8B is formed by being fixed to the filter frame 5B by adhesion.
[0026]
In the above configuration, by providing the compression processing unit 9 on the entire circumference of the dust collection filter 7, the end face of the dust collection filter 7 can be prevented from protruding from the rising portion 13 of the filter frame 5B. The height A of the rising portion can be made lower than the thickness B of the dust collection filter 7, and the filter frame 5B can be downsized.
[0027]
(Example 3)
As shown in FIGS. 7 and 8, a notch 12C is provided in the center of the filter frame 5C in the longitudinal direction, leaving a flat portion, and a dust collection filter 7C is bonded to the filter frame 5C.
[0028]
As the material of the filter frame 5C, polypropylene having good repeated bending strength (good hinge property) is used. Therefore, the filter frame 5C can be folded repeatedly at the flat portion of the notch 12C at the center of the filter frame 5C, and when the filter frame 5C is bent. The dust collection filter 7C can also be bent together.
[0029]
In the above configuration, when the air filter 8C is taken out from a filter mounting frame (not shown) incorporated in a heat exchanger attached to the air conditioner and the air filter 8C protrudes longer than the side space, it cannot be taken out. .
[0030]
In such a case, the air filter 8C can be bent at the center so that the protruding amount of the air filter 8C can be reduced.
[0031]
In addition, since the foldable flat portion provided with the notch 12C has the filter frame 5C, the dust collecting filter 7 is not directly subjected to pulling or bending, and the dust collecting filter 7 is not damaged. , Can maintain the dust collection ability.
[0032]
【The invention's effect】
As is clear from the above embodiments, according to the first invention, the adhesive is held in the groove portion of the flat portion, and it is possible to prevent the adhesive from protruding outside the filter frame. Thus, it is possible to provide an air filter that has a good appearance, increases the strength of the filter frame, and can easily cope with changes in the length of the depth dimension.
[0033]
According to the second invention, since the dimension of the rising portion of the filter frame can be made smaller than the thickness of the dust collecting filter, the height dimension of the filter frame and the height dimension of the filter mounting frame are reduced, and heat exchange is performed. It is possible to provide an air filter that can reduce the external dimensions of the vessel.
[0034]
According to the third invention, the notch at the center in the longitudinal direction becomes a hinge, and the air filter can be bent, so that the space required for taking out the air filter can be reduced and the filter frame is continuous. Therefore, there is no direct force applied to the dust collection filter during pulling or bending, and it can prevent damage to the dust collection filter, maintain the dust collection capacity, and can be easily handled during attachment / detachment. Can provide a filter.
[Brief description of the drawings]
FIG. 1 is a cross-sectional view of an essential part of an air filter according to a first embodiment of the present invention. FIG. 2 is a plan view of an essential part of the air filter. Fig. 5 is a cross-sectional view of the main part showing the air filter attached state. Fig. 5 is a cross-sectional view of the main part of the air filter of the second embodiment. Fig. 6 is a cross-sectional view of the main part showing the attached state of the air filter. FIG. 8 is a side view of the air filter when bent. FIG. 9 is an external perspective view of a conventional air filter. FIG. 10 is a cross-sectional view of the main part of the air filter. Side view of the air filter when bent [Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Plane part 2 Protrusion band 3 Groove part 4 Rod-shaped material 5 Filter frame 6 Adhesive 7 Dust collection filter 9 Compression processing part 12 Notch

Claims (3)

A filter frame formed by bending a rod-shaped material with a protruding band at the tip of a flat L-shaped section in the circumferential direction, and applied or dripped into the filter frame in a groove formed in the filter frame by the protruding band. An air filter having a dust collecting filter that is bonded and fixed by an adhesive.   The air filter according to claim 1, wherein a compression processing unit having a compressed thickness is provided on the entire circumference of the dust collection filter, and the compression processing unit is fixed to the filter frame by adhesion.   The air filter according to claim 1, wherein a notch is provided in the center of the filter frame in the longitudinal direction, leaving a flat portion, and the filter frame can be bent.

Images