KR101769679B1

KR101769679B1 - Pipe type air filter

Info

Publication number: KR101769679B1
Application number: KR1020150138225A
Authority: KR
Inventors: 홍필천
Original assignee: 홍필천
Priority date: 2015-09-30
Filing date: 2015-09-30
Publication date: 2017-08-18
Also published as: KR20170038595A

Abstract

The present invention provides a pipe-type air filter (1) provided with a filter paper (3) so that it can be immediately filtered in a direction in which air flows in a hollow tube (2) corresponding to the inside of the pipe The present invention is characterized in that a hollow tube 2 is provided in a form corresponding to the inside of the pipe 10 so that the air can be stored inside the pipe 10 to which the air is to be delivered, The filter paper 3 having zigzag folded corners located on the front and back sides in the forward and backward zigzag form in the lengthwise direction of the tube 2 and having a radially uniform spacing from the center of the tube 2 toward the inner surface of the tube 2 is provided In the present invention, there is further provided a supporting base 4 positioned at the center of the tube 2 and having a filter paper 3 attached to the outside thereof. According to the present invention, the inside of the pipe 10 through which air to be filtered flows On the road The filter paper 1 can be inserted into the pipe 10 and the filter paper 3 is folded in forward and backward zigzags so as to be formed radially densely toward the inner surface from the center of the tube 2 so as to be suitable for filtering air flowing in the pipe 10 The efficiency of the filter can be maximized, and a number of effects such as product response, work convenience, and manufacturing cost can be expected.

Description

[0001] PIPE TYPE AIR FILTER [0002]

The present invention relates to a pipe-type air filter. More specifically, air is introduced into a hollow tube corresponding to the inside of a pipe through which air flows (including pipes of all cylinders, Type air filter capable of maximizing the filter efficiency even in a narrow space inside the pipe by inserting the filter paper into the pipe so that the filter paper can be directly filtered in the flowing direction.

In the pipe-type air filter, generally, the air filter is installed at one side of a pipe (hereinafter referred to as a "pipe") such as various pipes, tubes, ducts and pipes The air filter is capable of filtering various dusts, germs and fine dust contained in the flowing air. As disclosed in Korean Patent Publication No. 82644 (published on Dec. 5, 1998), a polygon The upper and lower cases have a substantially hexahedron shape between the cylindrical inlet pipe and the cylindrical outlet pipe, and air having a zigzag filter paper inserted in the inside of the rectangular frame inside the upper and the lower case is provided between the cylindrical inlet pipe and the cylindrical outlet pipe by folding the filter paper zigzag from one side to the opposite side. A technique in which a filter is interposed has been developed. However, such a rectangular air filter Which is different from the shape of a cylindrical pipe through which air flows, was required to have a bulky and large-sized housing case, which had a problem of taking up a lot of space when installed in a small place such as a car.

Techniques which are constructed in a cylindrical or cylindrical shape so that the air filter can be installed even in a narrow place are disclosed in Korean Patent Application Publication No. 25040 (published on Nov. 17, 1994), published patent application No. 120019 As disclosed in commonly-published Japanese Patent Application No. 70801 (published on June 28, 2010), a plurality of such conventional cylindrical air filters have been provided in the center of the hollow space, The peripheral portion of the hollow space spaced apart from the housing or the casing is secured on the outside of the filter to allow the air flowing in the longitudinal direction of the pipe to flow into the central portion and then to the peripheral portion or to the peripheral portion and then to the central portion. Similarly, a conventional cylindrical air filter requires a casing having a diameter larger than that of a pipe through which the air flows, The air flowing in the longitudinal direction of the pipe passes over the filter paper without passing through the filter paper, and if the center portion and the peripheral portion are not spaced apart from each other, Since the conventional cylindrical air filter and the filter housing casing have a larger diameter than the air flowing pipe in order to secure the empty space in the peripheral portion, they can not be installed directly in the pipe, which is a narrow place, It was difficult to install in a narrow place, and the filter efficiency was significantly reduced as the size of the air filter was reduced.

KR 10-1998-0082644 A Dec. 5, 1998. KR 20-1994-0025040 A Nov. 17, 1994. KR 10-2007-0120019A Dec. 21, 2007. KR 10-2010-0070801 A 2010. 6. 28.

The present invention has been made to solve the above-mentioned problems of the prior art, and it is an object of the present invention to provide an air purifier which can prevent the air from flowing into the central portion of the inner pipe after being permeated to the peripheral portion thereof, It is difficult to install a conventional cylindrical air filter inside a pipe by forming a space in a center portion and a peripheral portion. In contrast, in the present invention, a filter paper for filtering air is internally fixed inside a pipe through which air to be filtered flows, The filter paper is folded back and forth along the longitudinal direction of the pipe and the tube while the zigzag folded edge of the filter paper is formed radially from the center of the tube so that the air flowing in the longitudinal direction inside the pipe flows in front of the filter paper To backward The installation space can be minimized to the inside of the pipe. Nevertheless, since the filter paper takes a zigzag shape in the longitudinal direction of the pipe, which is the flow direction of the air, so as to maximize the filter efficiency The present invention has been completed based on the object of the present invention to provide a pipe type air filter.

According to the present invention, there is provided a pipe-type air filter, wherein the pipe-type air filter of the present invention has a shape corresponding to the inside of the pipe so that air can be housed inside the pipe to be transferred A hollow tube is constituted, and a zigzag folded edge located at the front and rear in a zigzag form folded back and forth in the lengthwise direction of the pipe is formed inside the tube with a filter paper having radially equidistant gaps from the center of the tube toward the inner surface of the tube The filter may be installed at the center of the tube and the filter paper may be attached to the outside.

And an inner tube which is located at the center of the tube and is attached to the outer side of the inner tube and which is folded back and forth in a zigzag fashion in the lengthwise direction of the pipe, The zigzag folded edges may be provided with inner filter paper having a radially equal spacing from the center of the inner tube toward the inner surface of the inner tube.

In addition, the front of the tube may be inscribed in the pipe, and the rear of the tube may be inclined to be smaller than the front.

According to a specific means for solving the above-mentioned problems, the pipe-type air filter of the present invention is characterized in that a filter paper having a staggered shape in the longitudinal direction of the pipe is inserted and installed inside the tube, The air filter can be installed inside the flowing pipe, so that the filter can be filtered in a narrow space inside the pipe.

In addition, in the air filter of the present invention, the filter paper provided inside the tube does not have a zigzag form on the opposite side only, but the front and rear edges folded back and forth are zigzagged radially toward the inner surface from the center of the tube, The air flowing through the pipe contacts the inner surface of the pipe so that the flow velocity is the highest at the pipe center portion rather than the edge portion where a large amount of friction is generated. In the present invention, the filter paper at the center portion of the tube is most densely packed, So that the air filter efficiency of the pipe can be maximized.

The pipe type air filter according to the present invention is characterized in that the filter paper has a zigzag shape in the longitudinal and longitudinal direction of the pipe inside the tube as described above, It is most suitable to filter air of pipe type and maximizes the filter efficiency. Therefore, it is most suitable for the pipe, so that the product response of the air filter And it can contribute to the expansion of the base of the product due to the increase.

Figs. 1A, 1B, and 1C illustrate various examples in which the pipe-type air filter of the present invention is applied. Fig.
FIGS. 2A and 2B are perspective views showing the three-dimensional shape of the air filter according to the first embodiment of the present invention,
Figs. 3A and 3B are views showing the three-dimensional shape of the air filter in the state of being separated from the air filter of the second embodiment of the present invention,
FIGS. 4A, 4B and 4C are diagrams showing the relationship between the separated state of the air filter according to the third embodiment of the present invention,
FIGS. 5A and 5B are diagrams for explaining an embodiment of the air filter provided in the separated state,
6 is a perspective view of the air filter provided in the fifth embodiment of the present invention,

The present invention relates to a pipe type pipe structure which is installed to be accommodated in one pipe of all kinds of pipe such as various pipes, tubes, ducts and pipes such as circular or polygon through which various kinds of air flows and is capable of filtering various kinds of dust, Air filter, which will be described in more detail below with reference to the drawings.

1A to 1C, the pipe type air filter 1 according to the present invention is a pipe 10 to which various kinds of air to be filtered are to be fed, as shown in FIGS. 1A to 1C, A tube 2 having a hollow shape and corresponding to the inner shape of the pipe 10 is provided so that the tube 2 accommodated inside the pipe 10 as described above is provided, A filter paper 3 configured to be folded back and forth in a zigzag form in the longitudinal direction of the pipe 10 through which the air flows is provided.

In the filter paper 3 according to the present invention, the folded corner located forwardly and the folded corner located at the rear located in forward and backward zigzag folds radially from the center of the tube 2, respectively, toward the inner surface of the tube 2 And the entire outside of the filter paper (3) is attached to the inner surface of the tube (2).

At this time, as in the first embodiment shown in FIG. 2A or FIG. 2B, the inside of the filter paper 3 is made to abut against each other so that the inside is hot melt bonded to each other, 2, a support 4 made of a rod, an angled rod, a hollow pipe 10, a square pipe 10, or the like is positioned at the center of the tube 2, The entire inside of the filter paper 3 to which the filter paper 3 is adhered can be radially moved to the outside of the supporter 4 by various adhesive means such as hot melt adhesive.

In addition to the above-described first and second embodiments of the pipe-type air filter 1 of the present invention, more various embodiments exist, and as in the third embodiment shown in FIG. 4A or 4B, And the filter paper 3 in the air filter 1 of the present invention is the same as the length of the tube 2 with the support base 4 inside the filter paper 3 which is the center part of the tube 2, And a hollow inner tube 5 which is located at the center of the filter paper 3 and in which the inside of the filter paper 3 is adhered in an outer radial direction and which is located at the center of the tube 2 in the entire inside of the filter paper 3 An inner filter paper 6 is provided inside the attached inner tube 5 so as to be folded forward and backward in a zigzag fashion in the longitudinal direction of the pipe 10 through which the air flows and the inner filter paper 6 is folded in forward and backward zigzags In the state, the folded edge located forward and the folded edge located at the backward angle The inner tube 5 may be configured so as to have an equal spacing so that the entire outer side is attached to the inner surface of the inner tube 5 by cutting radially from the center of each inner tube 5. [

In the third embodiment, as shown in FIG. 4C, the hollow inner tube 5 is formed to be longer than the length of the tube 2, without making it equal to the length of the outer tube 2 as in FIGS. 4A and 4B Therefore, the inner filter paper 6, which is radially densely arranged on the inner side of the inner tube 5, is formed to be long in the front and rear direction to enlarge the area, so that the pressure loss due to the narrow inner filter paper 6 is corrected, It is possible to increase.

In another embodiment, the diameter of the tube 2 before and after the tube 2 can be different from that of the fourth embodiment shown in Fig. 5A or 5B, and the front of the tube 2 is located inside the pipe 10 And the rear of the tube 2 is formed in a truncated conical shape so that its diameter becomes smaller than its front diameter and narrowed from front to back to be tapered back. At this time, since the tube 2 narrows from front to back, The width of the folded edge W2 located behind the width W1 of the folded edge located at the front is further narrowed.

The truncated cone-shaped air filter 1 may be applied to the pipe 10 with a narrow portion forward and a wide portion rearward as required.

As in the fifth embodiment shown in FIG. 6, in the present invention, the tube 2 is formed to be long in the longitudinal direction, and two or more radially arranged filter sheets 3 are folded in forward and backward zigzags, So that two or more filter paper 3 can be provided in the longitudinal direction of the pipe 10, thereby doubling the filter efficiency.

The pipe-type air filter 1 of the present invention having the above-described structure comprises a hollow tube 2 inserted inside the pipe 10 through which the air flows to be filtered and a pipe 2 (3) formed by folding forward and backward zigzag in the longitudinal direction of the tube (2) and folding the front folded corner and the rear folded edge radially toward the inner surface of the tube (2) from the center of the tube The filtering operation thereof will be described in more detail as follows.

A rectangular air filter in which a zigzag filter paper 3 is folded on one side to the opposite side in a conventional rectangular frame and a rectangular air filter in which a hollow space is formed in a conventional central portion and a peripheral portion, When the cylindrical air filter is configured to fold the filter paper 3 in a zigzag manner and the pipe type air filter 1 according to the present invention is installed, the conventional rectangular air filter described above has a problem that the front surface of the zigzag filter paper 3 It is impossible to install the air filter 1 in a narrow place because the housing of the air filter 1 is larger than the diameter of the pipe 10 through which the air flows. Thus, the flow rate of the peripheral portion and the center portion of the air flowing in the pipe 10 Even though the flow rates are different, the front surface of the filter paper 3 is merely made in a zigzag form so that the filter efficiency is inevitably lowered , The conventional cylindrical air filter is required to have a hollow space at the center portion of the pipe 10 in order to allow the entire amount of air flowing through the pipe 10 to flow into the center portion thereof, so that the cylindrical air filter is also made larger than the diameter of the pipe 10 , The housing in which the cylindrical air filter is inserted is made larger than the diameter of the pipe 10 so that the air flows into the peripheral portion of the cylindrical air filter and is then discharged to the central portion. ), It is difficult to install the filter in a narrow space. Nevertheless, the filter efficiency is lowered compared to the present invention, and the case of the present invention will be described in detail below.

On the other hand, the pipe type air filter 1 of the present invention has an inner side of the pipe 10 corresponding to the inside of the pipe 10 so as to be housed inside the pipe 10, Type air filter 1 is formed in such a manner that the inner side of the filter paper 3 is folded in a zigzag shape with its inner side facing the center of the tube 2 and its outer side facing the inner surface of the tube 2, Since the tube 2 serving as an outer casing is formed corresponding to the inside of the pipe 10 and can be stored therein and the maximum diameter reaches the inner diameter of the pipe 10, the pipe 2 can not be larger than the diameter of the pipe 10, It can be installed in a small place inside the portable terminal 10.

In addition, in the pipe-type air filter 1 of the present invention, the filter paper 3 is dense in the center of the tube 2 inside the tube 2 and radially less densely in the edge portion than in the center portion The edge portion of the air flowing inside the pipe 10 is in contact with the inner surface of the pipe 10 to maximize the frictional resistance so that the flow rate is slow and the flow rate is small and the center portion is maximally spaced from the inner surface of the pipe 10, The pipe type air filter 1 of the present invention in which the filter paper 3 in the central portion is dense and the filter paper 3 in the edge portion is relatively less dense is used as the most suitable Structure, thereby maximizing the filter efficiency.

In addition, as in the third and fourth embodiments of the present invention, the tube 2 and the filter paper 3 are formed on the outer side and the inner tube 5 and the inner tube 5 are fixed to the inner side of the filter paper 3 and the tube 2, And the inner filter paper 6 provided in the inner tube 5 together with the filter paper 3 are added to the pipe type air filter 1. The pipe type air filter 1 having the double- The pipe type air filter 1 having a double length structure can be manufactured by inserting a filter paper 3 separately provided in the front and rear sides of the tubular air filter 1, The filter paper 3 may be overlapped in the longitudinal direction to further maximize the filter efficiency.

As described above, the pipe-type air filter 1 of the present invention can be installed in a narrower space than the conventional rectangular air filter or the cylindrical air filter, and has a filtering structure adapted to the flow of air flowing through the pipe 10 The filter efficiency is high and the air filter 1 is directly received into the pipe 10 for such filtering or the air filter 1 is inserted into the tub 10 or the mesh The filter fixture 7 is installed in the pipe 10 by using a filter fixture 7 made of a body type pipe and protrudes annularly outwardly or radially outwardly in the front of the filter fixture 7, And a grille 9 is formed on the rear side of the air filter 1 so that the air filter 1 is not pushed backward.

In order to replace the air filter 1, a door 11 may be provided on one side of the pipe 10 when the air filter 1 is taken out, or a pipe 10 The filter mounting pipe 13 provided with the engaging protrusions 12 may be installed in the pipe 10 through which the air flows so that the air filter 1 does not move in the longitudinal direction of the air filter 1, 1 can be extremely easily stored and replaced.

As described above, the pipe-type air filter 1 of the present invention has a simple structure, is easy to manufacture, and can be easily installed and replaced. Therefore, It is possible to install in a narrow place and the filter efficiency can be greatly increased, and so on.

While the present invention has been described with reference to exemplary embodiments, it is to be understood that the invention is not limited to the disclosed exemplary embodiments, but, on the contrary, It should be understood that the scope of the claims is not limited to the examples but covers the scope of the claims and the scope of equivalents thereof.

1: Air filter
2: tube
3: Filter paper
W1: Width of the folded corner located forward
W2: width of the folded corner located at the rear
4: Support
5: Inner tube
6: Inner filter paper
7: Filter fixture
8:
9: grille
10: pipe
11: Entrance
12: hanging jaw
13: Filter mounting pipe

Claims

A tube 2 configured to be hollow in correspondence with the inside of the pipe 10 so that the air to be filtered can be stored inside the pipe 10 to be conveyed,
A zigzag folded edge located at each of the front and rear ends is folded in a radial direction from the center of the tube 2 toward the inner surface of the tube 2, And a filter paper (3) having an outer side entirely attached to the inner surface of the tube (2) while being equally spaced.

The method of claim 1,
And a support base (4) located at the center of the tube (2) and in which the filter paper (3) is attached to the outer surface of the entire inner surface.

The method of claim 1,
An inner tube (5) positioned at the center of the tube (2) and having the entire inside of the filter paper (3) attached to the outside,
The zigzag folded corners, which are respectively located at the front and the rear, are folded in the inner side of the inner tube 5 in the zigzag fashion in the longitudinal direction of the pipe 10, Further comprising an inner filter paper (6) configured to be radially equidistantly attached to the entire outer side of the inner filter paper (6).

The method of claim 1,
The air filter 1 is formed into a tub or net so that the air filter 1 is forwardly inserted when the air filter 1 is installed inside the pipe 10, A filter fixture (7) is further provided,
The filter fixture 7 comprises a support piece 8 which is annularly protruded outward in the forward direction or a number of which project radially outwards to be hooked on the connecting portion of the pipe 10 and a fixing piece 8 fixed to the rear side to prevent the air filter 1 from being pushed And a grill (9) installed therein.

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