KR101747961B1 - Air filter cartridge and assembly method thereof - Google Patents

Abstract

The present invention relates to a cylindrical air filter cartridge for forming a filtration layer on a filter sheet for filtering air, a first housing having a plurality of air holes formed therein, And a filter member provided between the first housing and the second housing, the filter member having a first housing and a second housing, the first housing having a first housing and a second housing, A filter sheet that is rolled over the first sliding sheet to be dried on the first housing and a second sliding sheet which is curled on the filter sheet that is to be dried on the first housing and which is in contact with the inner wall of the second housing, An air filter cartridge comprising a sliding seat and a method of manufacturing the same are provided.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to an air filter cartridge,

The present invention relates to a cylindrical air filter cartridge using a sheet for filtering air and a method of manufacturing the same.

It is general that various mechanical devices using air are configured to suck foreign matter not less than a predetermined size contained in air and suck it into the inside of the apparatus rather than to use the outside air as it is.

The filter structure for filtering out foreign matter in the air can be variously constructed. One of them is a structure that forms a rigid frame structure having an inner passage outer tube and fills the filter between the inner passage outer tube. A plurality of holes for air flow are formed in the inner barrel outer tube. The outer barrel is introduced into the inner barrel through the outer barrel, the filter and the inner barrel, and then enters the inside of the machine through the end of the cylindrical barrel.

Korean Patent No. 10-1254266 (filter cartridge) is a filter of such a structure. A soft filter element is formed to be wrinkled. The outer circumferential surface of such a filter element is coupled with a retainer having a lattice structure. The retainer helps to ensure that the soft filter element is fully inserted into the filter housing constituting the rigid frame.

This conventional technique has a problem in that the retainer is manufactured separately and the filter member is assembled with the filter member, thereby increasing the cost and inconvenience. The retainer is also for convenience of maintenance and assembly of the filter without contributing to air filtration.

Korean Registered Patent No. 10-1254266 (Apr. 31, 2013)

SUMMARY OF THE INVENTION The present invention is directed to an air filter cartridge and a method of manufacturing the air filter cartridge, which improve the convenience of assembly of the air filter cartridge and prevent tearing or breakage of the filter cartridge provided therein so as to exhibit stable filtration quality.

Other objects and advantages of the present invention will become apparent to those skilled in the art from the following detailed description.

According to an aspect of the present invention, there is provided an air conditioner comprising: a first housing having a plurality of air holes formed therein, a first housing having a cross-sectional area larger than that of the first housing, And a filter member provided between the first housing and the second housing, wherein the filter member includes a first sliding sheet that is wound around the first housing, a first sliding sheet that is wound around the first housing, A filter sheet rolled over the sliding sheet, and a second sliding sheet, which is curled over the filter sheet, which is dried in the first housing, and contacts the inner wall of the second housing.

Further, the first sliding sheet and the filter sheet are overlapped to each other in some sections, and the filter sheet and the second sliding sheet may be partially dried and dried.

Further, the first sliding sheet and the second sliding sheet are made of polyethylene-based synthetic fiber and may be made of a breathable material.

Winding a first sliding sheet around an outer circumferential surface of a first housing having a plurality of vent holes formed therein, winding a filter sheet around the first sliding sheet wound around the first housing, winding the filter sheet wound around the first housing, Winding a second sliding sheet on the outside of the seat, inserting the first housing in which the second sliding sheet is wound into the inside of the second housing, and engaging the cap member on both ends of the first housing and the second housing A method of manufacturing an air filter cartridge comprising the steps of:

Further, the step of winding the filter sheet may be wound on the first housing with the start portion of the filter sheet overlapping with the last portion of the first sliding sheet.

Further, the step of winding the second sliding sheet may be wound on the first housing with the start portion of the second sliding sheet overlapping with the last portion of the filter sheet.

In another embodiment, the step of inserting the first housing into the inside of the second housing may include the step of assembling a guide member to the distal end of the insertion direction of the first housing such that the skirt of the guide member is wound around the second housing It is possible to prevent disturbance of the second sliding sheet by separating the guide member after inserting the edge of the sliding sheet in the second housing while wrapping the front edge of the sliding sheet together.

According to the embodiment of the present invention, since the damage of the filter member, which is concerned during the process of inserting the first housing including the filter member into the second housing, is prevented, the defective assembly rate is lowered and the operation reliability of the manufactured cartridge is improved have.

The effects of the present invention will be clearly understood and understood by those skilled in the art, either through the specific details described below, or during the course of practicing the present invention.

1 is a perspective view of an air filter cartridge according to an embodiment of the present invention;
2 is a cross-sectional view of the embodiment shown in Fig. 1 as seen from the front; Fig.
3 is a perspective view of a method of manufacturing an air filter cartridge in accordance with the embodiment shown in FIG.
Figure 4 is a perspective view of the method of manufacturing an air filter cartridge according to the embodiment shown in Figure 1, in relation to the inserting step of the first housing.
Figure 5 is a schematic view of the embodiment shown in Figure 1 in plan view.
6 is a perspective view of the method of manufacturing an air filter cartridge according to another embodiment of the present invention in relation to the inserting step of the first housing.
FIG. 7 is a partial cross-sectional view showing the use state of the guide member according to the embodiment of FIG. 6;
8 is a partial cross-sectional view showing another use state of the guide member in relation to the embodiment of Fig.

DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, configurations, functions, and operations of an air filter cartridge and a manufacturing method thereof according to the present invention will be described with reference to the accompanying drawings. It should be noted, however, that the same reference numerals will be used for the same or similar components throughout the drawings and the embodiments.

In the following description, terms such as 'first', 'second', and the like are used to distinguish constituent elements whose technical meaning is within the same range for convenience. That is, any one configuration may be arbitrarily referred to as a 'first configuration' or a 'second configuration'.

BRIEF DESCRIPTION OF THE DRAWINGS The accompanying drawings, which are incorporated in and constitute a part of the specification, illustrate embodiments of the invention and, therefore, are not to be construed as limiting the technical spirit of the invention. It is to be understood that the invention is not to be limited by any of the details of the description to those skilled in the art from the standpoint of a person skilled in the art that any or all of the drawings shown in the drawings are not necessarily the shape,

The first slide sheet, the filter sheet and the second slide sheet are schematically shown in the drawing for easy separation.

1 and 2 relate to the overall shape of an air filter cartridge according to an embodiment of the present invention.

The cartridge 100 according to the embodiment of the present invention includes a first housing 10, a second housing 20, and a filter member 30. [ And a cap member (40) for closing both ends of the second housing (20).

The first housing 10 and the second housing 20 are hollow cylindrical bodies, and a plurality of air holes H through which air passes are formed on the outer circumferential surface. The first housing 10 is smaller in diameter than the second housing 10 so that the first housing 10 can be accommodated in the second housing 20. The first housing 10 and the second housing 20 may be made of a metal plate or a rigid synthetic resin.

A filter space having a donut section is formed between the outer wall of the first housing 10 and the inner wall of the second housing 20 as the first housing 10 is located in the second housing 20. The filter member 30 is filled with the filter space.

The cap member 40 is coupled to the upper and lower ends of the assemblies of the first housing 10, the filter member 30 and the second housing 20, respectively. The cap member 40 at the lower end is hermetically sealed at the lower end portion of the cap member 40 and the passage member 41 through which the air flows is formed at the cap member 40 at the upper end. The upper and lower cap members 40 are attached to the end portions of the filter member through an adhesive, and are coupled with the screws 51 and the nuts 52 for rigid assembly.

The outside air is filtered through the ventilation holes of the second housing 20, the filter member 30 and the ventilation holes of the first housing 10. The filtered air entering the first housing 10 passes through the upper Is sucked into the mechanical device through the passage (41) of the cap member (40). On the contrary, it may be filtered while passing through the vent holes of the first housing 10, the filter member 30, and the vent holes of the second housing 20.

Referring to Fig. 2, the filter member 30 includes a first sliding sheet 31, a filter sheet 32 and a second sliding sheet 33.

The filter sheet 32 is a main member for filtering the outside air, and can be made of various materials according to required physical properties. The filter sheet 32 is formed to have the same width as the height of the first housing 10, and may be provided by being rolled up into a roll shape. The filter sheet 32 occupies a large part of the volume of the filter member 30.

The first sliding sheet 31 is wound on the outer circumferential surface of the first housing 10 to prevent the filter sheet 32 from contacting the outer circumferential surface of the first housing 10, And prevents the filter sheet 32 from coming into direct contact with the inner circumferential surface of the second housing 20 by being in contact with the inner circumferential surface of the housing 20. [

The first slide sheet 31 and the second slide sheet 33 may be made of a synthetic resin material resistant to friction and capable of passing air therethrough. Specifically, it can be made of polyethylene-based synthetic fiber (PE MICRO FIBER). Here, the slip sheet made of polyethylene fiber can exhibit filtration performance on the order of tens of microns.

The first sliding sheet 31 and the second sliding sheet 33 are pressed against the filter member 30 from the outer wall of the first housing 10 or the inner wall of the second housing 20 during the process of manufacturing the cartridge 100 Protect.

The first housing or the second housing is made of a metal material or a solid synthetic resin and has a plurality of vent holes formed on the outer circumferential surface thereof. The plurality of dense vent holes make the surface rugged, and sometimes, burrs there may be a burr.

At this time, if the first sliding sheet and the second sliding seat are not provided, the filter sheet is inserted into the second housing while the filter sheet is coupled to the first housing. During this process, There is a fear that an assembly failure such as tearing or wrinkling may occur.

Further, by pushing the end portion of the rigid first housing into the second housing, slippage may occur between the inner wall of the first housing and the filter sheet, and damage may occur to the filter sheet.

In the embodiment of the present invention, the first sliding sheet 31 and the second sliding seat 33 are padded on the inside and the outside of the filter sheet 32, so that they are in contact with the wall surfaces of the first housing and the second housing It is possible to prevent the filter sheet from being damaged. By using the first and second sliding sheets which are relatively slippery and tough compared to the filter sheet, damage to the filter sheet during assembly of the cartridge can be prevented.

3 to 5 relate to a method of manufacturing an air filter cartridge according to an embodiment of the present invention.

A method of manufacturing a cartridge according to an embodiment of the present invention includes sequentially winding a first sliding sheet 31, a filter sheet 32 and a second sliding sheet 33 on the outer peripheral surface of a first housing 10, Inserting the first housing 10 in which the filter member 30 is wound into the second housing 20 and coupling the cap member 40 to both ends of the second housing 20. [

Fig. 3 relates to winding the first sliding sheet 31, the filter sheet 32 and the second sliding sheet 33 in the first housing 10.

The first sliding sheet 31 is wound on the outer side of the first housing 10 in this order so that the last part of the first sliding sheet 31 and the beginning of the filter sheet 32 are wound in a superimposed state, The last portion of the sheet 32 and the beginning portion of the second sliding sheet 33 are also overlapped and wound.

The overlapped portions A and B are made to be at least half a turn with respect to the outer periphery of the sheet wound around the first housing 10. Specifically, the overlapped portion can be made to be half to 1.5 times. 3 schematically shows a state in which the first sliding sheet 31 and the filter sheet 32 are wound around the first housing 10 by about half a turn. The overlapping portion of the filter sheet 32 and the second sliding sheet 33 also reaches approximately half a turn.

The first sliding sheet 31 and the second sliding sheet 33 are wound so as to overlap each other about 1.5 to 2 times and the filter sheet 32 is wound around the first and second housings 10, Is wound several times to fill the filter space between the filter (20).

The first sliding sheet 31, the filter member 30 and the second sliding sheet 33 are overlapped with the last winding portion and the winding start portion and are wound tightly on the first housing 10, The sliding sheets 31 and 33 are not easily peeled off from the filter member 30 when the filter member is subsequently handled.

4, when the semi-finished product of the first housing 10 and the filter member 30 is pushed into the second housing 20, the second sliding sheet 33 and the second housing 20, The second sliding sheet 33 and the first sliding sheet 31 are pushed by the filter sheet 32 due to friction with the inner wall, thereby preventing the filter member from being separated.

Further, no separate adhesive or the like is used for the connection between the first sliding sheet 31 and the filter sheet 32 and the connection between the filter sheet 32 and the second sliding sheet 33, .

After the filter member 30 and the first housing 10 are inserted into the second housing 20, the cap member 40 is coupled to both ends. At this time, an adhesive may be used for the contact surface of the cap member and the filter member. Further, as shown in Fig. 2, the screw rod 51 and the nut 52 are additionally fastened.

6 to 8 relate to a method of manufacturing an air filter cartridge according to another embodiment of the present invention.

The method of manufacturing a cartridge according to another embodiment includes sequentially winding a first sliding sheet, a filter sheet and a second sliding sheet on an outer circumferential surface of a first housing, inserting a first housing in which a filter member is wound into the inside of the second housing, And joining the cap members to both ends of the second housing, and the technical features of each step may be the same as those of the above-described embodiments within a range not contradicting to the contents described below.

The guide member 60 for assisting insertion of the first housing 10 and the filter member 30 is used in the step of inserting the first housing 10 into the second housing 20 in another embodiment.

The guide member 60 is engaged with the insertion direction leading end portion of the first housing 10 in which the filter member 30 is wound. The guide member (60) has a skirt (61) for gathering and wrapping the tip of the second sliding sheet forming the outermost edge of the filter member (30).

The front end of the filter member 30 surrounded by the skirt 61 is inserted into the second housing 20 so that the skirt 61 covers the filter member 30 from the friction with the inner wall of the second housing 20, The tip is protected.

After the filter member 30 and the first housing 10 are completely inserted and positioned into the second housing 20, the guide member 60 is separated and the cap member is assembled as described above.

The tip end portion of the filter member 30 is prevented from being deformed due to the burr-like protrusion in the second housing 20 as the guide member 60 enters the second housing 20 while wrapping the tip end portion of the second sliding sheet Thereby eliminating the risk of being torn or dried. By inserting the filter member 30 into the second housing 20 in a state where the filter member 30 is intact, the assembly failure is prevented and the filtration performance of the cartridge is ensured.

Figs. 7 to 8 relate to the internal structure of the guide member, which improves the ease of use.

The guide member 60 includes a body 62 that enters into the first housing 10, a skirt 61 that extends from the body 62 and holds the outer peripheral surface of the second sliding sheet 33 to grip the skirt 61, And a handle 63 connected thereto.

The tip end portion of the body can be conically shaped in the center of the first housing so that the guide member can easily enter.

The skirt 61 is a member connected to the body 62 in a cup shape, and is shaped like a widening toward the upper side in the drawing, and covers the end portion of the filter member 30. The maximum outer diameter of the skirt 61 may be substantially equal to the inner diameter of the second housing 20. [ In addition, the skirt 61 is gradually thinner toward the end. Further, a plurality of cutout grooves 611 are formed along the outer circumferential surface, so that elastic deformation of the end portions of the skirt 61 is easy. Thus, the skirt 61 can be pinched in conformity with the inner diameter of the second housing 20.

The body 62 is provided with a latching portion 621 for holding the vent hole H of the first housing 10 while being carried around at the periphery of the body 62 and a spring 622 for urging the latching portion 621 in the direction in which the latching portion 621 protrudes (624). The body 62 is formed with a guide groove for guiding the engaging portion 621 so as to be movable only in the horizontal direction.

A recessed receiving portion 622 is formed on the side surface of the engaging portion 621. The trigger 64 that ascends and descends from the body 62 interferes with the inner wall of the accommodating portion 622 to retract the engaging portion 621 upon the rise of the trigger 64, So that the latching portion 621 protrudes from the side surface of the body 62.

The trigger 64 extends outward through a central hole 631 of the handle 63 to form a pressing portion 641 and is elastically supported by a coil spring 642 so as to be lowered.

Fig. 7 shows a state in which the guide member 60 is coupled to the first housing 10 and the filter member 30. Fig. The trigger 64 is lowered by the coil spring 642 and the latching portion 621 elastically supported by the spring 624 protrudes outside the body 62 without interference by the trigger 64 .

The upper end portion 623 of the engaging portion 621 is curved so that the upper end of the engaging portion 621 rides over the vent hole H of the first housing 10 along with the entry of the body 62, 1 into the housing 10.

When the guide member 60 is completely mounted, the guide member 60 is not disengaged by the engagement of the end portion 623 of the engaging portion 621 with the vent hole H. [

On the other hand, the engaging portion on the right side of the drawing does not enter the vent hole due to contact with the outer wall of the first housing. Since a plurality of latching portions are provided along the outer circumferential surface of the body, only a few latching portions may be caught in the ventilation holes, and the remaining latching portions may not be able to grasp the ventilation holes. Even in such a case, the guide member does not come off from the first housing due to some of the engagement portions caught in the vent hole.

8 shows a state immediately before separating the filter member 30 to the second housing 20 and the guide member 60 after the insertion of the first housing 10 is completed.

When the pusher 641 of the trigger 64 is held in the hand together with the handle 63, the trigger 64 is raised while compressing the coil spring 642. [ The receiving portion 622 of the latching portion 621 is interfered with the inclined surface 643 of the trigger 64 that has risen to horizontally move the latching portion 621 toward the center of the body 62. [ Accordingly, the latching portion 621 protruding from the side surface of the body 62 and holding the vent hole is retreated, and interference with the vent hole is released. The guide member 60 can be separated from the first housing 10 by pulling the handle 63 in this state. The filter member 30 pressed by the skirt 61 is restored to be in contact with the inner wall of the second housing 20.

Such a guide member 60 can more positively protect the tip end of the filter member 30, facilitating the assembly of the filter member 30, and improving the productivity.

In other embodiments, although not shown, the first sliding sheet may be omitted, and the filter sheet may be wound on the first housing. In another embodiment, the filter sheet and the sliding sheet may not overlap each other during the winding process. Also, the screw rod and the nut may be omitted during the process of coupling the cap member.

100: Cartridge
10: first housing 20: second housing H: vent hole
30: Filter element
31: first sliding sheet 32: filter sheet 33: second sliding seat
40: cap member 41: passage 51: screw rod 52: nut
60: guide member
61: skirt 611: incision groove
62: body 621: latching portion 622: receiving portion 623: distal end portion 624: spring
63: handle 631: center hole
64: Trigger 641: Pushing part 642: Coil spring 643:

Claims (7)

delete delete delete Winding a first sliding sheet on an outer circumferential surface of a first housing having a plurality of ventilation holes,
Winding a filter sheet on the outside of the first sliding sheet wound on the first housing,
Winding a second sliding sheet on the outside of the filter sheet wound on the first housing,
Inserting the first housing in which the second sliding sheet is wound into the inside of the second housing, and
And coupling a cap member to both ends of the first housing and the second housing,
The step of inserting the first housing into the second housing includes:
A guide member is coupled to a leading end portion of the first housing in the inserting direction,
The skirt of the guide member is inserted into the second housing in a state of wrapping the front edge of the second sliding sheet wound around the first housing,
And the guide member is separated to prevent the second sliding sheet from being disturbed
A method of manufacturing an air filter cartridge. 5. The method of claim 4,
The step of winding the filter sheet comprises:
And the filter sheet is wound on the first housing in a state where a start portion of the filter sheet overlaps with a last portion of the first slide sheet
A method of manufacturing an air filter cartridge. 5. The method of claim 4,
Wherein the step of winding the second sliding sheet comprises:
And the first sliding sheet is wound on the first housing in a state where a start portion of the second sliding sheet overlaps with a last portion of the filter sheet.
A method of manufacturing an air filter cartridge. delete

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