JPS5827609A - Cylindrical filter - Google Patents

Abstract

PURPOSE:To widen the filtering surface area of a filter and to preoare said filter easily, by cylindrically winding a filter member which is a thin plate like form and of which the cross area shape in a flowing direction has a continuous recessed and protruded from to the flowing direction. CONSTITUTION:This cylindrical filter 9 is constituted by cylindrically winding a filter member 2, which is formed from a thin plate like filter element 1 provided with a wavy pleat 102 having gorrves 101 along the direction of the center axis thereof of which the cross area shape in the direction of the center axis has a continuous recessed and protruded form to the direction of the center axis, around an inner cylinder 3. To both end parts 901, 902 of this filter 9, opening parts 5, 7 and closed parts 6, 8 are formed and the space of the inner peripheral surface 903 thereof and the inner cylinder 3 and the space of the winding intiating end 401 of the filter member 2 and the bent inner surface 203 thereof are sealed with an adhesive material. By this constitution, an ineffective filter area due to the adhesive is reduced and the preparation of the filter is facilitated.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a cylindrical filter body in which a shaped filter material is rolled into a cylindrical shape, and the cross-sectional shape along the fluid flow direction has an uneven shape with respect to the fluid flow direction.

Traditionally, this type of weekly holiday was, for example,
There is one disclosed in 804. As shown in Figure 1, the fluid flows into the cylindrical filter 9 as shown by the black arrow.
Fine particles in the fluid are collected and removed by the thin plate-shaped filter material l that flows out like a white arrow to form a cylindrical filter 9, and the fluid is filtered and cleaned. A filtration member 2 is formed by folding a filtration material 1 into two so that the cross-sectional shape along the fluid flow direction is concave with respect to the fluid flow direction, and the filtration member 2 is wound into a cylindrical shape with the inner cylinder 3 as the central axis, and the filtration By applying adhesive 4 to a part of the parts where the members 2 overlap each other, the filtration member 2
are combined and sealed together to form an inlet end opening 6 and an inlet end closing part 6, and as a result, a cylindrical filter 9 whose cross-sectional shape along the fluid flow direction is uneven with respect to the fluid flow direction is formed. has been done.

Although the cylindrical filter 9 formed in this manner has a large filter area and exhibits good filtration performance, it has the following problems.

That is, first of all, in this type of cylindrical filter 9, it is essential to continuously connect and seal the two folded filtration members 2 between each other with an adhesive side band. must be at least 5 MM or more, and since the filtration material 1 upstream from the part where this adhesive side number is applied does not play a role in filtering the fluid, an ineffective filtration area occurs where the filtration surface area is wasted. Moreover, the width of the filter material 1 upstream from the part where the adhesive 4 is applied needs to be approximately 10g11 or more to avoid the adhesive protruding, so the ratio of the ineffective filtration area is cylindrical. This is a non-negligible proportion of the total filtration surface area of the cylindrical filter 9, and the proportion of the ineffective filtration surface area increases rapidly as the axial length of the cylindrical filter 9 is shortened to make it more compact.

Second, it is important to complete the above-mentioned bonding seal by the adhesive 4 in order to increase the filtration rate, and for this purpose, it is necessary to increase the amount of adhesive sub-number applied. However, when a large amount of adhesive 4 is applied, the width of the adhesive subnumber becomes wider, resulting in an ineffective filtration surface (1゛).

If the ratio of the product increases, the adhesive subnumber may protrude onto the inlet end face 901 of the cylindrical filter 9, and as a result, the artificial end face opening 5 may be blocked and the flow path may be blocked.

The present invention aims to solve the above problems and provide a cylindrical filter that has a large filtration surface area and is easy to manufacture, and a method for manufacturing the same. This purpose is achieved by a structure in which a filtration member is wound into a cylindrical shape, the cross-sectional shape of which is concave and convex continuous in the fluid flow direction.

The present invention is applicable to any fluid, and when the volume of the filter is the same, a wider filtration area can be obtained, and when the filtration area is the same, a smaller cylindrical filter can be obtained. Therefore, a filter using the same can be made smaller and lighter. However, since the filtration materials can be more securely sealed together, a highly reliable cylindrical filter and filter can be provided. For example, oil filter.

When used as a fuel filter, air cleaner, etc., it can be made smaller, lighter, and more reliable.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described in detail below using an example in which the present invention is applied to an oil filter used in an internal combustion engine as a representative example of a filter. 2 to 11 relate to the first embodiment of the present invention, and FIG. 2 shows a cylindrical filter with weekly holidays 9
Figure 3 is a cross-sectional view taken along the central axis of the cylindrical filter 9 (taken along the line 1-1 in Figure 2). 411ij to 10 are explanatory diagrams relating to the manufacturing method of the cylindrical filter 9 of the present invention, and FIG. 11 is a filter element formed using the cylindrical filter 9! 1 is a cross-sectional view along the central axis of a filter constructed by incorporating the following. First, the structure of a cylindrical filter 9 according to a first embodiment of the present invention and a filter r using the same will be described. The structure of the Niremen door assembly la formed using the cylindrical filter 9 of the present invention is a wavy pleat having a groove 101 along the central axis direction of the cylindrical filter 9, as shown in FIGS. 2 and 3. A filtration member 2 is formed by forming a thin plate-like filtration material 1 marked with 102 so that the cross-sectional shape in the direction of the central axis of the cylindrical filter 9 has a concave and convex shape that is continuous in the direction of the central axis. A cylindrical filter 9 is constructed by winding it into a cylindrical shape as a central axis. The cylindrical filter 9 configured in this manner has an inlet end face opening and an inlet end face closing portion 6 at the filter end face 901, and an outlet end face opening 7 at the filter outlet end face 902.
and an outlet end closure 8 is formed naturally. Furthermore, an adhesive is filled between the inner circumferential surface 903 of the cylindrical filter 9 and the outer circumferential surface of the inner cylinder 3 and the inner circumferential surface 903 of the filtration member 2 is bonded and sealed to form the inner circumferential seal portion 403 of the filtration member 2. An adhesive is also filled between the winding start end and the bent inner surface (203) of the filtration member 2 to connect and seal each other, and the winding start end sealed portion 40
1 is formed. Further, the cylindrical filter 9 is inserted into the outer cylinder 10, and an adhesive is filled between the outer circumferential surface 904 of the cylindrical filter 9 and the inner circumferential surface of the outer cylinder 10, so that they are bonded and sealed together. A member outer side seal portion 404 and a winding end seal portion 402 are formed to constitute an element 1. In addition, an inlet end plate 11 made of a thin metal plate formed by pressing or the like is fitted onto the end face 901 of the element 1, and is fixedly sealed to the element 1 with an adhesive or the like at a joint portion 405. Further, a support plate 12 made of a thin metal plate is applied to the filter outlet end face 902 side, and an outlet end plate 15 formed by pressing a thin metal plate with the support plate 12 sandwiched therein is fitted.
At the joint portion 406, the elements are connected and fixedly sealed using an adhesive or the like to form the Nilemendo food assembly 1!1. Note that a large number of small holes 1101 and 1201 are punched out or the like in the inlet end plate 11 and the support fxs to form an inflow path and an outflow path for fluid.

In addition, a support portion 11oz is provided in the center of the artificial end plate 11, and 1 outlet end plate 1! In the center of S, a support tube 13 made of a thin metal plate is fixed to the outlet end plate 15 by spot welding or the like, and a support portion 1302 is provided at the tip of the support tube 13.
The inner cylinder 3 is supported by the support parts 110g and 13o2, and the central axis of the inner cylinder 3 and the central axis of the outer cylinder 1o are aligned to fix the position in the radial direction and also to fix the position in the central axis direction. Further, a bypass hole 15o2 is provided in the center of the outlet end plate 15, and a relief valve 14 is attached and fixedly sealed by welding or the like. As shown in FIG. 11, the assembly assembly 1 constructed in this way is formed by molding a thin metal plate into a cylindrical container 1.
The fill spring 17 is inserted after the coil spring 1 is fitted into the spring fitting part 1601 of No. 6, and the fill spring 17 is inserted between the recess 1501 provided in the center of the outlet end plate 15 and the spring fitting part 1601, and then the leaf spring 1801 is inserted. A holding plate 18 having a shape is fitted into a support portion 1102 provided at the center of the inlet end plate 11. Next, a fitting protrusion 2202 is provided at the center of a substantially disk-shaped bottom plate 20 made by molding a steel plate with a press or the like, and a packing 19 made of disk-shaped oil-resistant rubber with a fitting hole in the center.
The fitting protrusion 2202 is fitted into the hole of the support portion 110g, and the gasket 19 is pressed down while being inserted. A substantially ring-shaped seal ring holder 21 formed from a thin steel plate by pressing or the like is assembled and fixed to the bottom plate 2o by spot welding or the like.
The end portion 2101 of the container 16 is assembled and connected to the end portion 16o2 of the container 16 without any leakage by tightening or the like.

Note that the inner diameter of the hole provided in the center of the presser plate 18 is made slightly larger than the outer diameter of the support portion 1102, so that the presser plate 1B can freely move in the axial direction, and the leaf spring 18
Due to the elastic force of 01, the packing 19 is softly pressed against the bottom plate 20 via the holding plate 18. In addition, due to the elastic force of the coil spring 17, the double main assembly LEA is pressed somewhat strongly against the bottom plate 20 by sandwiching the gasket 19 at the support portion 1102, which is a part of the inlet end plate 11, and the gasket 19 has a sealing function. fulfill. Further, a seal ring 22 made of oil-resistant rubber is fitted into the seal ring holder 21. A plurality of inflow holes 2001 are formed in the bottom plate 20 by punching or the like, and a female thread is cut on the inner surface of a fitting protrusion 2202 at the center thereof. The filter 1 having such a structure is screwed into a male thread 2305 cut at the tip of the filter coupling part 23oz of the engine pull 23, and has a seat 7° having a ring-shaped contact surface that is smoothly machined.

The seal ring v22 is brought into elastic contact with 23o1 and is assembled and sealed.

Next, a method for manufacturing the cylindrical filter 9 of the present invention will be explained. First, as shown in Fig. 4, when a thin plate-shaped filtration material 1 is passed between spur gears (not shown) that mesh with each other with a backlash slightly larger than the thickness of the material, the filter material 1 is passed through a pair of spur gears (not shown) that mesh with each other with a backlash slightly larger than the thickness of the material. Wavy pleats 102 with grooves 101 are formed in the filter material 1 . Next, as shown by solid lines and two-dot chain lines in the figure, the material 200 of the filter member is cut diagonally at an angle of approximately 45° to the groove 101, and the parts shown by dotted lines in the same direction are alternately folded back as folded parts 201. The folded portions 201 shown in front and side views in FIGS. 5 and 6 are used as an inlet end face closing part 6 and an outlet end face closing part 8, respectively, and an inlet end face opening 5 and an outlet end face are formed between them. A filter member 2 with openings 7 is formed naturally. As the filtration material 1, for example, filter paper may have crepes (fine wrinkles) or not, and the present invention can be applied to either of them, but if anything, it is better to use crepes. Good results can be obtained.

In the filter groove members 2 formed in this way, the directions of the grooves 101 intersect as shown by the solid line and the broken line in FIG. Since the area ratio of filtration is small, the filtration area can be used effectively.

Furthermore, as described above, the material 200 of the filter groove member may not be cut diagonally, but may be cut in the direction along the grooves 101 formed in the filter material 1. In this case as well, since the filter groove member materials 20-0 are alternately folded back to form the filter groove members 2, the area ratio of the filter materials 1 in contact with each other is slightly increased compared to the above case, but the filter material 1 do not come into close contact with each other and the filtration area is effectively utilized. Next, as shown in FIG. 7, after bending the filter groove member 2 into an arc shape and applying an adhesive side number to the bent inner surface 203, as shown in FIG. When wrapped around the cylinder 5, the bent inner surface 20 of the filter groove member 2 is formed by the adhesive 4.
5 and the outer peripheral surface of the inner cylinder 3, there is an inner cylinder outer seal part 40.
3 is formed.

Note that the winding start end side of the side surface 202 of the filter groove member 2 is combined and sealed with a part 401m of the adhesive 4 applied to the bent inner surface 203 to form a winding start end sealing part 401. If the adhesive 401b is also applied to the side surface 202, defective adhesion can be further reduced, so that the reliability of the joint seal of the winding start end seal portion 401 can be further improved.

Further, the width of the filter groove member 2 is set to such a length that when the filter groove member 2 is wound around the inner cylinder 3, the end A of the bent outer surface 204 and the end B of the bent inner surface 203 overlap.

Note that the filter groove member 2 does not necessarily have to be single-wound as in this embodiment, but may be multi-wound.

In that case, it is preferable to select the width of the filter groove member 2 so that one part thereof overlaps with the extension line connecting the part A and the central axis, and also reduce the number of times the material 200 of the filter groove member is folded back. It is better to reduce the thickness of the In this way, the cylindrical filter 9 is formed.

Various modifications can be considered to the filter using this cylindrical filter 9, but for example, as shown in Fig. 9, the outer cylinder 1° is made of a board made of cardboard or the like. When an adhesive side number is applied to one side and wrapped around the cylindrical filter 9, the adhesive side number seals the filter groove member outer side face seal portion 404 and winding end seal portion 4C1.
is formed, and the cross section in the direction of its central axis (mark-1 in Figure 9) is formed.
An α element having a structure whose line cross section is approximately as shown in FIG. 10 is formed. If the adhesive 4 is applied in advance to the periphery of the cylindrical filter 9, the reliability of the joint seal between the filtration member outer curved surface seal portion 404 and the winding end seal portion 4o can be further improved. Also, depending on the type of filtrate fluid, it may be necessary to use a hot-melt adhesive such as 6-nylon or polyamide resin as the adhesive, so that it is difficult to dissolve in the filtrate fluid. After applying adhesive side number to form element I,
After putting the element in an atmosphere with a temperature higher than the melting point of the adhesive and remelting the applied adhesive and thoroughly blending it into the filter material 1, taking it out will further improve the reliability of the joint seal part of 40 to 404. can be increased.

In addition, in order to bond and seal the filtration materials 1 to each other, without using an adhesive, for example, the portion of the filtration material 1 that is to be melted may be heated to a temperature higher than the melting point of the filtration material 1 to fuse and seal. It's okay. The filter 1 can be obtained by assembling the element I formed in this way into a nilemend door 7 assembly l& as shown in FIGS. 2 and 3, and then assembling it as shown in FIG. 11, as described above.

Next, the function of the cylindrical filter weekly rest 9 of the present invention will be explained.
The function of the filter configured using the filter will be explained using FIG. 11.

When oil containing fine particles discharged from an oil pump (not shown) flows in from the oil inlet 2303 drilled in the engine block 23 as shown by the black arrow, the oil flows through the plurality of inflow holes 2o01 as shown by the thin arrows. The leaf spring 1801 flows into the filter 1 via the holding plate 18.
The gasket 19 pressed against the bottom plate 20 is pushed down, and water flows into the element assembly E& from the numerous small holes 1101 made in the inlet end plate 11, and further flows into the circular sieve filter 9 from the end face 901 of the filter. Fine particles in the oil are filtered and collected as it passes through the filter material 1 following various thread paths as shown by thin arrows, and the purified oil passes through the filter outlet end face 902 and passes through the cylindrical filter filter 9. A large number of small holes 1 are formed in the support plate 12 and flow out from the inside.
2o1 and a plurality of support cylinder side holes 1301 drilled in the side surface of the support cylinder 13 to flow into the flow path formed by the inner surface of the inner cylinder 3, and further drilled in the center of the filter coupling @ 2302 of the engine block 23. oil outlet 230
4, clean oil containing no particulates is supplied to each part of the engine as shown by the white arrow.

Note that the support plate 12 plays a role of preventing the cylindrical filter 9 from being deformed due to pressure loss differential pressure due to filtration resistance by supporting the filter outlet end face 902, and the seal 19 is provided at the center of the inlet end plate 11. It is sandwiched between the supported part 1102 and the bottom plate 20 and is pressed down by the elastic force of the fill spring 17, and is the resultant force of the hydraulic pressure applied to the element assembly la (oil pressure) x (
The seal 19 securely seals between the inlet flow path and the outlet flow path of the filter 7 because it is also pressed down by the difference in the pressure receiving area (pressure loss differential pressure) x (area of a circle with the diameter of the inner cylinder). This prevents oil from bypassing between the inlet flow path and the outlet flow path. Further, the packing 19 is pressed against the bottom plate 20 by the leaf spring 1801 via the holding plate 18, and thereby plays the role of a check valve to prevent the oil in the filter 1 from flowing out when the engine is stopped. When the filter F is used upside down, the oil in the filter F flows out and becomes empty, and the oil supply from the filter ν is delayed when the engine is started, which prevents troubles such as the engine seizing up. It plays a role in preventing the oil accumulated in the filter 1 from flowing out and spilling when the filter 1 is replaced. Also,
The relief valve 14 has a bypass hole 1502 drilled in the center of the outlet end plate 15, a circular flat valve plate 1404 housed in a valve housing 1402, and a valve coil spring 1403.
By pressing and sealing with the cylindrical filter 9, when the pressure drop difference due to the filtration resistance of the cylindrical filter 9 exceeds the specified value, the valve plate 1404 is pushed open by the pressure drop difference, and the oil is released as shown by the broken line in the figure. is configured to bypass the oil from the filter outlet end face 901 to the filter outlet end face 902 by passing through the bypass hole 1502 and through a plurality of housing side holes 1401 formed in the side surface of the valve housing f1-402. .

As the cylindrical filter 9 collects and removes fine particles in the oil, it gradually becomes clogged, the filtration resistance increases and the pressure drop increases, and the pressure of the oil supplied from the filter 1 decreases. However, in such a case, the relief valve 14 bypasses the oil, ensuring the necessary oil flow to each part of the engine, and avoiding the worst case scenario, such as engine seizure. Further, when the engine is operated at high speed, the oil pressure applied to the filter 1 increases, and in extreme cases, such as when the cylindrical filter 9 is clogged, the pressure applied to the cylindrical filter 9 increases. There is a risk that the cylindrical filter 9 will be damaged if it is too much, but even in such a case, the relief valve 14 bypasses the oil and serves to prevent the cylindrical filter 9 from being damaged.

In addition, the cylindrical filter 9 of the filter 1 of the present invention has a structure in which the filtration materials are alternately folded and arranged in a chrysanthemum shape. The filtration area is more than double, and the first
Compared to the conventional cylindrical filter 9 shown in the figure, the cylindrical filter 9 can be made smaller because it has a wider filtration area, and the filter 1 can be made smaller and lighter. When applied to a filter, etc., the amount of oil accumulated in the filter decreases as the filter volume is reduced, resulting in an effect that the amount of oil used can be saved.

Next, a second embodiment of the present invention will be described using FIG. 12. The differences from the first embodiment will be explained mainly by spur gears (not shown) that mesh with a backlash slightly larger than the plate thickness of the filter material 1, which has a gear width slightly smaller than the bending width of the filter kudzu material 2. If two types of pairs with different pitches and tooth heights (not shown) are arranged adjacent to each other alternately, and a thin plate-like filter material l is passed between them, the filter material will be filtered in the direction perpendicular to the feeding direction of the material, as shown in Figure 12. Wavy pleats 1o2a, 1oji! of different pitches and fold heights with grooves 101a, 1o1b of different widths and fold depths! b is the partial filtration material 1 & of the filtration material 1.

1b, respectively, alternately. The pitch and tooth height of the two types of gears are wavy folds of 102m and 1og.
By adding b, the partial filtration materials 1a and lb are selected so that the amount of shrinkage in the feeding direction of the materials is the same.

Next, the material 200 of the filter member is cut in the direction along the grooves 101a and 1olb formed in the filter material l as shown by the solid line and the two points am in the figure, and the part shown by the dotted line in the figure is used as the folded part 201. By folding back alternately, a filtration member (not shown) is formed in substantially the same manner as in the first embodiment. In the filtration member formed in this way, the widths of the grooves 101a and 101b are different from each other, so the filtration materials 1 do not come into close contact with each other, and a flow path for the filtrate fluid is ensured in the overlapped portion of the partial filtration materials La and lb. be done. Then, elements, element assemblies, and filters may be formed in the same manner.

Figures 13 to 15 relate to the third embodiment, and to explain the differences mainly, the first embodiment does not have wavy pleats.
The filtration material 1 is folded and used, and the folded 1st
The second filtration materials 24 & and the third filtration materials 24b, which have considerably lower filtration resistance than the first filtration material 1, are alternately sandwiched between the filtration materials 1, so that the first filtration materials 1 do not come into close contact with each other. The filter member 2 is formed in this manner.

Then, in the same manner, the cylindrical filter is used for weekly holidays 9. Element L element assembly] Ha, and a filter are formed. 14 is a cross-sectional view in the direction perpendicular to the central axis direction of the element assembly Ha (TI-Vl line cross-sectional view in FIG. 15), and FIG. 15 is a cross-sectional view in the central axis direction (Marma line cross-sectional view in FIG. ), the second filtration material 24a and the third
Filtration material! By configuring the filtration resistances of 4b to be equal to each other, the flow resistance of all the flow paths of the cylindrical filter groove body 9 from the filter end face 901 to the filter outlet end face 902 becomes equal, so that the filtration fluid As shown by the thin arrows in FIG.
Second. The third filtration material 1.24 m, 24b fully performs its filtration function, providing a highly efficient filter as in the previous embodiment.

FIGS. 16 and 17 relate to the fourth embodiment. FIG. 16 is a cross-sectional view taken in a direction perpendicular to the central axis direction of the element 1, and FIG. 17 is an explanatory diagram of the manufacturing method of the material 200 of the filter member. be.

In this embodiment, the winding start end and the winding end of the filtration member 2 are made to face each other, and the filtration material 1 at the winding start end and the winding end are bonded and sealed together by a method such as gluing or fusing, and the winding start end sealed portion is 401 and the winding end seal part 402 are formed in the same part so as to face each other.

In this case as well, the axial cross-sectional view (ma-malii cross-sectional view)
is similar to that in FIG. 10, and the same effects as in the previous embodiment can be obtained. Elements of this example! To explain how to make it, as shown in Fig. 17, a thin plate-shaped filter material 1 is
Processing is performed in the same manner as in the example, and 1 oz of wavy pleats having grooves 101 in a direction perpendicular to the feeding direction of the material are formed in the filter material 1. Next, groove 1 is shown as a solid line and a two-dot chain line in the figure.
Cut the filtration material 1 in the direction along 01 into an isosceles trapezoid with equal opposite sides that are not parallel to form the material 200 of the filtration member,
The filter member 2 is formed by alternately folding the parts indicated by dotted lines in the figure as fold-back parts 201, and by applying adhesive to this member and inserting it between the inner cylinder 3 and the outer cylinder 10, a cylindrical filter is formed. Groove body 9 and winding start end seal portion 4011 winding end seal portion 402° inner cylinder outer periphery seal portion 403. A filter member outer side seal portion 404 is formed, and Niremen) 1 is obtained.

Then, an element assembly and a filter can be formed in the same manner as in the embodiments described above.

Note that the lengths of parallel opposite sides of the isosceles trapezoid, which is the cut shape of the filter material 1 of this embodiment, are preferably set equal to the outer circumferential length of the inner cylinder and the inner circumferential length of the outer cylinder.

Furthermore, as a method for preventing the filtering materials 1 forming the cylindrical filter 9 from coming into close contact with each other, in addition to the method of this embodiment, various modifications such as the method of the other embodiments described above can be implemented.

Further, as the filter of the present invention, various modifications can be considered based on the cylindrical filter weekly holiday 9, for example, the cylindrical filter weekly holiday 9.
The cylindrical filter 9 may be inserted into a container, and the cylindrical filter 9 and the container may be bonded and sealed using an adhesive or the like to form a filter.

In addition, the inner cylinder 3 is not necessarily essential for the cylindrical filter 9. For example, after forming the cylindrical filter 9, the inner cylinder 3 is removed and the hole in the inner cylinder is opened. A cap-shaped object may be press-fitted and adhesive-sealed on the end surface 901 or the end surface 902 of the opening.

As explained above, the present invention involves winding the filtration member 2 in a cylindrical shape, which is formed from a thin plate-like filtration material 1 and whose cross-sectional shape along the fluid flow direction has a concave and convex shape that is continuous with respect to the fluid flow direction. A cylindrical filter 9 with an extremely wide filtration area can be obtained by connecting and sealing all of the filter materials to each other at the end of the winding, and by constructing the filter 7 using the cylindrical filter 9, it is possible to obtain a filter with the same volume. In this case, a filter having an extremely wide filtration area and low filtration resistance can be obtained, and when the filtration area is the same, the filter volume is small and a small and lightweight filter 1 can be obtained.

[Brief explanation of the drawing]

FIG. 1 is a perspective view of the manufacturing process of a conventional cylindrical filter, FIGS. 2 to 11 relate to the first embodiment of the present invention, and FIG. A sectional view taken in the right angle direction (1-is sectional view in Fig. 3), Fig. 3 is a sectional view taken along the I-1 line in Fig. 2, and Figs. 4 to 10 show the manufacturing method of the cylindrical filter 9. FIG. 11 is a cross-sectional view along the central axis of the filter 1 of the present invention, which is constructed using a cylindrical filter 9 that is the main part of the present invention. FIG. 12 relates to the second embodiment, and shows the material 20 of the filter member.
0 is an explanatory diagram of a manufacturing method of 0. 13 to 15 relate to the third embodiment, in which FIG. 13 is a sectional view of the filtration member 2 in the direction along the flow direction of the filtered fluid, and FIG. 14 is a sectional view in the direction perpendicular to the axial direction of the element assembly 1 & (Tl-Tl line section I'1Wi in FIG. 15), and FIG. 115 is a sectional view along the Marma line in FIG. 16 and 17 relate to the fourth embodiment, in which FIG. 16 is a cross-sectional view taken in a direction perpendicular to the central axis direction of the element 1, and FIG. be. 1...Filtration material, LA, LB partial filtration material. 101, lolm, 101b-・groove, 102, 102m
, 102b = wavy folds, 2... filtering member, 200
-Material of filtration member, 201-・Folded part, 202-・
Filtering member side surface, 203...Bent inner surface, 3...Inner cylinder. 4... Adhesive, 401... Winding start end seal part, 40g
-・Roll end seal portion, 5...Inlet end face opening, 6...
・Inlet end face closing part, F... Outlet end face opening, 8-· Outlet end face closing part, 9... Cylindrical filter opening, 901... Filter opening end face, 902... Filter exit end face, 10...
・Outer cylinder. 11-One end plate, 1102-...Support part, l2
-・Support plate #13...Support cylinder, 14...Relief valve,
L5-Out C7111 plate, 16... Container, l F... Fill spring, 18... Holding plate, 1801-... Leaf spring. 19-・Putskin, 20...Bottom & I22...Seal ring, 23...Engine block, 2303...
Oil inlet, 2304...oil outlet. 24 &... second filtration material, 24b-... third filtration material, A-- bent outer surface end, B... bent inner surface end, T... element, Ka... element assembly, F
...Filter agent patent attorney Takashi Okabe

Claims (1)

[Claims] A filtration member made of a thin plate-like filtration material whose cross-sectional shape along the fluid flow direction has a continuous uneven shape in the fluid flow direction is wound into a cylindrical shape, and the filtration materials are bonded to each other at the start and end of the winding. A cylindrical filter characterized by being sealed.