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WO2003049838A1 - Filtre a air et procede de fabrication d'un tel filtre a air - Google Patents

Filtre a air et procede de fabrication d'un tel filtre a air Download PDF

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Publication number
WO2003049838A1
WO2003049838A1 PCT/JP2002/012952 JP0212952W WO03049838A1 WO 2003049838 A1 WO2003049838 A1 WO 2003049838A1 JP 0212952 W JP0212952 W JP 0212952W WO 03049838 A1 WO03049838 A1 WO 03049838A1
Authority
WO
WIPO (PCT)
Prior art keywords
fold
fold line
filter medium
filter
air filter
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/JP2002/012952
Other languages
English (en)
Japanese (ja)
Inventor
Kousaku Takaki
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
KODAKA SANGYO KAISHA Ltd
Original Assignee
KODAKA SANGYO KAISHA Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from JP2001380212A external-priority patent/JP3802801B2/ja
Priority claimed from JP2002346605A external-priority patent/JP4295980B2/ja
Application filed by KODAKA SANGYO KAISHA Ltd filed Critical KODAKA SANGYO KAISHA Ltd
Publication of WO2003049838A1 publication Critical patent/WO2003049838A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
    • B01D46/52—Particle separators, e.g. dust precipitators, using filters embodying folded corrugated or wound sheet material
    • B01D46/521—Particle separators, e.g. dust precipitators, using filters embodying folded corrugated or wound sheet material using folded, pleated material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
    • B01D46/0001—Making filtering elements
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
    • B01D46/10—Particle separators, e.g. dust precipitators, using filter plates, sheets or pads having plane surfaces

Definitions

  • the present invention relates to an air filter for trapping dust in air by allowing air to pass through, and a method for manufacturing the same.
  • This air filter there is a non-woven fabric formed by folding a non-woven fabric.
  • This air filter is provided with a frame of, for example, resin or metal around the air filter, and is incorporated in each of the above devices.
  • FIG. 19 (A) a filter medium 100 having substantially triangular side plates 102a and 102b integrally formed on both sides of a corrugated plate 101 provided continuously in one direction, respectively.
  • a filter medium 100 having substantially triangular side plates 102a and 102b integrally formed on both sides of a corrugated plate 101 provided continuously in one direction, respectively.
  • the first invention of the present application is directed to a belt-shaped filter medium 10, a direction perpendicular to the side 13, between both sides 13 parallel to the longitudinal direction of the filter medium 10.
  • the fold line 11 is formed at regular intervals, and in the air fill formed by alternately bending the fold line 11 above the valley, the fold line obtained by the mountain fold becomes the front side fold 11 c.
  • the fold line at the valley fold becomes the back fold line 11d, and this filter medium 10 is divided into the first surface 10a and the second surface 1Ob through each fold line 11 and
  • the filter medium 10 is formed in a continuous wave shape, and the side surface 13 of the first surface 10a and the second surface 1a are formed.
  • Side 1 and 3 of O b are folded back 1 1d is sandwiched, so that an opening 12a is formed between adjacent front side folds 1 1c, and a back side fold 1 1d and the first side 10a
  • an air filter characterized in that a bag-shaped space 12 surrounded by the first surface 10 and the second surface 10 is formed.
  • the fold line 11 is a straight main fold line 11 a formed between both sides 13 and a portion near the both sides 13. And a sub-fold line 11b formed on both sides of the main fold line 11a, whereby the bag-shaped space 12 can be formed wide.
  • An air filter characterized by the above is provided.
  • the fold line 11 is constant in the direction orthogonal to the side 13 between the side 13 parallel to the longitudinal direction of the filter 10 with respect to the strip-shaped filter 10.
  • the present invention provides an air filter characterized in that, in a portion thereof, the air filter is formed as a plurality of widened crease lines 11e.
  • the filter medium 10 is divided into a first surface 10a and a second surface 10b via each fold line 11;
  • the fold line 11 of the mountain-folded side is a front-side fold 1 1c, a valley fold
  • the folded line 1 1 becomes the backside fold 1 1d, and the side 13 of the first surface 10a and the side 13 of the second surface 1Ob
  • the opening 11 2a is formed between the adjacent front side folds 1 1c, and the back side fold 1 1d, the first side 10 a and the second side
  • a bag-shaped space 1 2 surrounded by 10 b and the above-mentioned wide crease line 1 1 e is formed at the position of the backside fold 11d, which allows the center portion of the bag-shaped space 12 to be formed wider.
  • a fifth invention of the present application provides the air filter according to the first or fourth invention, wherein the joining is performed by ultrasonic welding.
  • the front fold line 11 c of the fold line 11 is a linear main fold line 11 a formed between both side edges 13, and a filter medium.
  • the strip-shaped filter medium 10 continuously supplied in the longitudinal direction is orthogonal to the side 13 parallel to the longitudinal direction of the filter 10, and both sides 13
  • the fold line 11 is formed at regular intervals, and a fold line forming step 2 is performed, and the fold line 11 is bent alternately between the valley and the valley.
  • the folded fold line becomes the back side fold line 11d, and the strip-shaped filter medium 10 is divided into the first surface 10a and the second surface 10b through each fold line 11 and these first fold lines are formed.
  • the folding step 3 in which the surface 10 a and the second surface 10 b are alternately arranged, and the side 13 of the first surface 10 a and the side 13 of the second surface 10 b
  • the joining is performed through the backside fold 11d and, at the same time, an unnecessary portion is cut.
  • the joining step 4 includes the first side 10a and the second side. 1 Direction where O b comes into close contact Made by applying a force And a method for manufacturing an air filter.
  • the strip-shaped filter medium 10 which is continuously supplied in the longitudinal direction is orthogonal to the side 13 parallel to the longitudinal direction of the filter 10 and both side 13
  • a fold line 11 is formed at regular intervals, and a fold line forming step 2 is performed, and the fold line 11 is bent alternately between the valley and the valley.
  • the folded fold line becomes the back side fold 1 Id, and this band-shaped filter medium 10 is divided into the first surface 10 a and the second surface 1 Ob through each fold line 11, and these Folding step 3, in which the first surface 10a and the second surface 10b are alternately arranged, the side 13 of the first surface 10a and the side 13 of the second surface 1Ob Are joined through the backside fold 1 1d, and unnecessary portions are cut at the same time.
  • the joining process 4 consists of the above fold line 11 and the backside fold 1 1d.
  • FIG. 1 is a perspective view showing an appearance of an air filter according to an example of an embodiment of the present invention.
  • FIG. 2 is an explanatory view showing a series of apparatuses for manufacturing the air filter of the present embodiment.
  • FIG. 3 is an explanatory view showing a series of apparatuses for manufacturing the air filter of the present embodiment, which are related to a fold line forming process.
  • FIG. 2 is an explanatory view showing a series of apparatuses for manufacturing the air filter of the present embodiment.
  • FIG. 3 is an explanatory view showing a series of apparatuses for manufacturing the air filter of the present embodiment, which are related to a fold line forming process.
  • FIG. 4 is an explanatory diagram showing another example of a series of devices for manufacturing an air filter.
  • FIG. 5 is an explanatory diagram illustrating an example of a mold used in the fold line forming step.
  • FIG. 6 is an explanatory view showing an example of the mold. T JP02 / 12952
  • FIG. 7 is a plan view showing a state in which a fold line is formed in the filter medium in this example.
  • FIG. 8 is a plan view showing a state in which a fold line is formed in the filter medium in the present example (second example).
  • FIG. 9A is a plan view showing the air filter of the present example, and FIG. 9B is a front view of the same.
  • FIG. 10A is a plan view showing the air filter of the present example (second embodiment), and FIG. 10B is a front view thereof.
  • FIG. 11 is an explanatory diagram showing an apparatus related to a folding step in a series of apparatuses for manufacturing the air filter of the present example.
  • FIG. 12 is an explanatory diagram showing an apparatus related to a joining step in a series of apparatuses for manufacturing the air filter of the present example.
  • FIG. 13 is an enlarged explanatory view of a main part showing a device related to a joining step in a series of devices for manufacturing the air filter of the present example.
  • FIG. 14 is an enlarged explanatory view of a main part showing an apparatus related to a joining step in a series of apparatuses for manufacturing the air filter of the present example.
  • FIG. 15A is an explanatory view showing an example of a jig used in the joining step
  • FIG. 15B is a sectional view taken along line AA of FIG.
  • FIG. 16 is a perspective view showing an example of how to assemble the air filter.
  • FIGS. 17A and 17B are perspective views showing an example of a method of assembling the air filter
  • FIG. 17B is an explanatory view showing a cross section of another example of the method of assembling the air filter.
  • FIG. 18 is an explanatory view showing still another example of how to assemble the air filter.
  • FIG. 19 is a diagram showing a conventional air filter, where (A) is a development view and (B) is a perspective view. BEST MODE FOR CARRYING OUT THE INVENTION
  • FIG. 1 Is a sword 4 view showing the appearance of the air filter of this example.
  • FIG. 2 is an explanatory view showing an apparatus for manufacturing the air filter.
  • the side of the filter medium 10 where the fold line 11 is formed is referred to as the front side, and the opposite side is referred to as the back side.
  • the air filter 1 is formed by folding a band-shaped filter medium 10.
  • the process of manufacturing this air filter 1 can be roughly divided into three steps: a fold line forming step 2, a folding step 3, and a joining step 4.
  • a fold line forming step 2 a folding step 3
  • a joining step 4 a joining step 4.
  • an apparatus constituting each step 2 to 4 they are arranged so that a series of operations are performed continuously.
  • the arrangement of each of the steps 2 to 4 is not limited to this, and may be arranged separately or only two of the three steps may be arranged continuously. It is possible.
  • the filter medium 10 is supplied to a fold line forming step 2 including an apparatus as shown in FIG. As shown in FIG. 2, this filter medium 10 is set in a rolled state before the fold line forming step 2 and is supplied to the fold line forming step 2.
  • the filter medium 10 supplied to the fold line forming step 2 continuously in the longitudinal direction by the drive roller 21 is arranged above the mold 22, and the filter medium 10 is sandwiched therebetween.
  • the ultrasonic horn 23 which is arranged to be able to move up and down, presses the filter medium 10, thereby forming a fold line 11 in the filter medium 10.
  • the fold line 11 is a groove formed in the filter medium 10 as described above. In the subsequent folding step 3, the part of the fold line 11 is bent, so that the filter medium 10 becomes wavy. Is folded.
  • It may be composed of one step 2a and a second step 2b, and may be formed by passing through these two steps.
  • the ultrasonic horn 23 is for processing the filter medium 10 by heat generated by ultrasonic vibration.
  • the main fold line 1 is formed on the filter medium 10 at a position corresponding to the projection formed on the mold 22, as shown in FIG. 1 a, 1 lb minor fold line is formed.
  • a main fold line 11a, a sub fold line 11b, and a wide fold line 11e are formed.
  • the ultrasonic horn 23 is attached to the lower end of a hydraulically driven press device 24, and moves up and down in accordance with the operation of the press device 24. Therefore, the ultrasonic horn 23 first descends with respect to the filter medium 10 and is pressed to form a fold line 11 on the filter medium 10. Thereafter, once the ultrasonic horn 23 is once raised, the filter medium 10 is simultaneously sent in the longitudinal direction so as to be shifted by one step. And again, the ultrasonic horn 23 descends. By repeating this, fold lines 11 are formed at equal intervals with respect to the filter medium 10.
  • the mold 22 shown in FIG. 5 and the mold 22 shown in FIG. 6 are mounted on the mold stand 22 a one by one. Then, the ultrasonic horns 23 are alternately pressed against the filter medium 10 against the molds 22 to form the fold lines 11.
  • the mold 22 is as shown in FIG. 5, and has a flat crimping surface 22a formed on the upper surface.
  • the crimping surface 22a has streaky projections 22b, 22c. Are formed. Examples of the shapes of the projections 22b and 22c include those shown in FIGS. 5A to 5C. These are a straight main fold at the center in the short direction of the crimping surface 22a.
  • a protrusion 22b is provided, and a sub-fold protrusion 22c is provided at a predetermined distance of both end portions of the crimping surface 22a so as to be separated from the main fold protrusion 22b on both sides. is there.
  • the one shown in Fig. 5 (A) shows that the secondary fold projections 22 are parallel to the main fold projections 2 2b from the both ends of the crimping surface 22a to the center. Then, it bends and goes diagonally toward the direction of the main fold projection 22b, where it merges.
  • the one shown in FIG. 5 (B) has sub-fold projections 22 c extending obliquely from both ends of the crimping surface 22 a toward the main fold projections 22 b.
  • the one shown in Fig. 5 (C) has a sub-fold protrusion 22 formed parallel to the main fold protrusion 22b, but the one shown in Figs. 5 (A) and (B) Is different from the main fold projection 2 2 b.
  • the shapes of the projections 22b and 22c are not limited to the above-mentioned shapes, but can be variously modified and implemented.
  • two sub-fold line projections 2 2c are formed for one main fold line projection 2 2b, but the present invention is not limited to this.
  • a large number of c may be formed.
  • the mold shown in FIG. 6 is used at the same time.
  • the die 22 shown in FIG. 6 also has a crimping surface 22 a similar to the die shown in FIG. 5 on the upper surface, and the crimping surface 22 a has streaky projections 22 b , 22 c and 22 d are formed.
  • This mold 22 is different from the mold 22 shown in FIGS. 5A to 5C in that the main fold projection 2 2 b provided at the center in the short direction of the crimping surface 22 a is formed by a mold. 22 are provided only at both ends in the longitudinal direction. In the central portion in the longitudinal direction, width-opening fold projections 22 d are formed so as to be located on both sides of the virtual extension line of the main fold projection 22 b. In this example, the fold projection 22d for widening is formed so that the main fold projection 22b branches into two branches. Although not shown, three or more ridges 2d for widening are also formed, or curved or curved. It may be a dotted line, and can be implemented in various forms.
  • the sub-fold projections 22c are provided in the same manner as shown in FIGS. 5A to 5C.
  • the combination of the shape with 22 d is not particularly limited.
  • the main fold projections 2 2b, the sub fold projections 2 2c, and, in the case of the second embodiment, in addition to these, the wide fold projections 2 2d are formed on the mold 22.
  • a main fold line 11a, a sub fold line 1lb, and a wide fold line 11e are formed as shown in Fig. 7 and Fig. 8 so as to correspond to each of the filter media 10. be able to.
  • the filter medium 10 can be folded three-dimensionally as compared with the case where only the linear main fold line 11a is formed.
  • the sub-fold line l ib exerts an effect on the front-side fold 11 c formed in the subsequent folding step 3. If the filter media 10 is folded only at the main fold line 1 1a, the filter media 10 is folded in a flat shape, so that the filter media 10 is formed in a form facing each fold line 11 The bag-shaped space 1 2 is narrow. On the other hand, in the portion near both sides 13 of the filter medium 10, the sub-fold line 11b is also folded, so that the interval between the main fold lines 11a can be increased, and as shown in FIG. Thus, the bag-shaped space 12 can be widened.
  • the widened crease line 11 e formed in the second embodiment is effective for the back crease 11 d.
  • the central portion of the bag-shaped space 12 does not spread much. Therefore, in this central portion, by forming the widened crease line 11 e in the filter medium 10, as shown in FIG. 10, the bag-shaped space 12 is formed at least with the wide crease line 11 e. It can be held at the set interval, and can be broadened as a whole in conjunction with the operation of the sub-fold line 11b.
  • the bag-shaped space 12 wide as described above, the air flow in the bag-shaped space 12 becomes better when the air fill 1 is actually used, and the pressure loss is relatively low.
  • the number of main fold projections 2 2 b, sub fold projections 2 2 c, and widening fold projections 2 2 d is not limited to the above example. And can be changed in various ways. Thereby, the size of the bag-shaped space 12 can be appropriately changed, and the air filter 1 adapted to various purposes can be formed.
  • the filter medium 10 is sent to the folding step 3 after the folding line forming step 2 described above.
  • This folding step 3 is performed by the apparatus shown in FIG. 11, and the two folding plates 31 a and 3 lb moving up and down move the folding line 1 as shown in FIGS.
  • the filter medium 10 on which 1 is formed is folded.
  • Each of the folding plates 3 1 a and 3 1 b includes an upper blade 31 a formed downward and a lower blade 31 b formed upward. b can move back and forth in the longitudinal direction of the filter medium in addition to vertical movement.
  • the operation of the folding plates 3 la and 3 1 b will not be described in detail, the upper blade 31 a and the lower blade 31 b alternately sandwich the filter medium 10 vertically and longitudinally. Due to the movement, the filter medium 10 is folded in a wave shape.
  • the position where the filter medium 10 is folded is adjusted in advance so as to match the position of the fold line 11, and the mountain fold and the valley fold are alternately performed.
  • the fold line 11 on the side where the widening fold line 11e was formed in the present process 3 is a valley fold when viewed from the front side. Yes, and the other fold line 11 is a mountain fold.
  • the filter medium 10 folded as described above is heated by a flat electric heater 32 so that the filter medium 10 is folded. As a result, the filter medium 10 is supplied to the next joining step 4 in the folded state.
  • the filter medium 10 is sent to the joining step 4.
  • This joining step 4 is performed by the apparatus shown in FIG. 12, and the filter medium 10 which has been folded through the folding step 3 is opposed to each other.
  • the bag-shaped spaces 12 are formed so as to be parallel in the longitudinal direction.
  • a mountain-folded one is a front-side fold 11c
  • a valley-folded one is a back-side fold 11d.
  • the front fold 11c is located on the lower side
  • the back fold lid is located on the upper side.
  • first surface 10a and a second surface 10b the surfaces of the filter medium 10 divided by the respective fold lines 11 are referred to as a first surface 10a and a second surface 10b, and the first surface 10a and the second surface 10 sandwiching the back side fold 11d.
  • the following description is given by naming one set of the unit wave body 10 e for convenience.
  • the first surface 10a and the second surface 10b are alternately positioned with respect to each fold line 11.
  • the filter medium 10 is folded once in the longitudinal direction in the present process 4, and at the folded portion 4a, which is the portion, the unit medium 10e The side 13 of the first surface 10a and the second surface 1 Ob is joined.
  • FIG. 13 shows a rotary feeder 41 that holds the side 13 of the filter medium 10 and a unit wave body 10 e immediately before entering the folded portion 4 a.
  • the unit holder body 10 e overlaps the folded part 4 a, and the first surface 10 a and the second surface 1 Ob are vertically overlapped by the work holder 42 that can be moved in the front-rear direction. It is arranged in a state, that is, a state of lying down.
  • the transfer device 41 is rotatable, and the work holder 42 is movable in the front-rear direction as shown by a solid line and a two-dot chain line in FIG.
  • a positioning head 43 is inserted between the first surface 10a and the second surface 10 of the unit wave body 10e in the above state, and the positioning of the unit wave body 10e at the turnback portion 4a is performed. Is made.
  • the positioning head 43 is also shown in FIG. It is movable in the front-rear direction as indicated by the line and the two-dot chain line.
  • a metal fitting jig 44 is arranged below the side 13 of the unit wave body 10e in a state where the positioning head 43 is inserted.
  • the ultrasonic horn 45 descends from above the metal fitting jig 44 and presses the side 13 of the unit wave body 10e.
  • the side 13 of the first surface 10a and the second surface 10b is sandwiched between the metal jig 44 and the ultrasonic horn 45.
  • the first surface 10a and the second surface 10b of the sandwiched portion are heated by the ultrasonic horn 45, and are welded and integrated.
  • the work holder 42 and the positioning head 43 are moved backward, as shown by a two-dot chain line in FIG. 13.
  • the bracket jig 44 moves once to the diagonally lower position shown by the two-dot chain line in FIG. 14, and in that state, the rotary feeder 41 is formed around it.
  • the unit wave body 10e to be processed next is arranged in the folded portion 4a. Then, the above procedure is repeated again, and the filter media 10 are joined one after another.
  • a stopper for holding the filter medium 10 before processing may be separately provided.
  • a similar effect may be obtained by pinching and pulling the filter medium 10 from the outside.
  • the metal fitting jig 44 used in the joining step 4 is shown in a plan view in FIG. Fig. 15 (A) is a cross-sectional view taken along the line A-A in Fig. 15 (A), which is shown in Fig. 15 (B). It is arranged symmetrically left and right to come to the position. On the upper surface of the metal fitting jig 44, a crimping part 44a and a cutting blade part 44b are formed.
  • a hatched groove is formed in the crimping portion 44a.
  • this hatched pattern is formed on the side 13 of the filter medium 10.
  • the ultrasonic horn 45 generates heat more quickly, so that the filter medium 10 is hardly deteriorated by heat, and the process itself is performed. Can be performed promptly.
  • the shape of the crimping portion 44a is not limited to the shape described above, and may be implemented in various forms.
  • the cutting edge 44b can be divided into an ear cutting edge 44c, a side cutting edge 44d, and a bottom cutting edge 44e.
  • Fig. 15 (A) they are in a right-angled positional relationship and are continuous through the radius, but their shapes are There is no limitation, and there may be no connection and the connection may be straight. Further, the ear cutting edge 44c and the bottom cutting edge 44e may be omitted depending on the shape. Also, the cutting edges 44 a to 44 c need not be at right angles. For example, the side edges 13 b formed on the filter medium 10 after cutting are perpendicular to the fold line 11. The side cutting edge 44 d may be formed obliquely so as to have an angle other than that described above, and implementation is possible by variously changing the form.
  • the unit wave body 10 e By pressing the ultrasonic horn 45 as shown in FIG. 14 onto the unit wave body 10 e on the fitting jig 44 formed as described above, the unit wave body 10 e is formed.
  • the side edge 13 corresponds to the edge cutting edge 4 4c of the cutting edge portion 4 4b
  • the edge side edge 13a corresponds to the side cutting edge 4 4d.
  • b forms a bottom side edge 13c with respect to the bottom cutting edge 44e.
  • a lug 14 is formed at the end of the front side fold 1 lc, and this portion becomes a portion that is hooked to each device or mounting frame after the air filter 1 is completed.
  • the metal fitting jig 44 is movable in order to avoid interference when transmitting the unitary wave body 10a in the folded portion 4a.
  • the moving direction of the metal fitting jig 44 may be set in various directions depending on the design of the device. In this example, as shown by a solid line and a two-dot chain line in FIG. 14, it is possible to move diagonally.
  • the ultrasonic horn 45 is attached to the distal end of the hydraulically driven press device 46, and corresponds to the metal jig 44. There are two.
  • the ultrasonic horn 45 is disposed so as to descend from the upper side with respect to the unit wave body 10 e which is in the folded state at the folded portion 4 a, so that the conventional There is no need to press the sonic horn against the filter medium 10 from the lateral direction, so that the device is relatively compact and workability is improved.
  • it may be arranged so that the filter media is pressed from the lateral direction as before.
  • the ultrasonic horns 23 and 45 are used in the fold line forming step 2 and the joining step 4. These are to form a fold line 11 or join the filter medium 10 using heat generated by ultrasonic vibration, specifically, frictional heat.
  • these ultrasonic horns 23 and 45 only the necessary points can be locally heated, so that the deformation caused by high heat over a wide area caused by the conventional method using a heater etc. It is excellent in that it can prevent is there.
  • the air filter 1 is completed by cutting the filter medium 10 formed in each of the above steps 2 to 4 by counting the number of peaks formed by the fold line 11 for each required length in the longitudinal direction. Let it.
  • the air filter 1 is made of resin, metal, cardboard, and the same material as the filter medium 10.
  • a filter unit is formed by attaching the filter unit to a base material 51 made of a material or the like, or a resin unit is welded to the air filter 1 to form an integrated filter unit.
  • the air filter 1 is arranged in the mold of the injection molding machine, and the thermoplastic resin is placed in the space between the entire outer peripheral side surface of the air filter 1 and the inner surface of the mold in the mold. The material is heated and melted and injected, so that the frame is formed integrally with the air filter 1.
  • thermoplastic resin for forming the frame a material obtained by kneading a powder frame of waste paper may be used.
  • the used filter unit can be incinerated and disposed of, and the filter unit can be manufactured at a low cost and light weight.
  • the air filter 1 In the actual use state of the air filter 1, the air filter 1 is arranged so that the air flow passes from the back side to the front side.
  • the filter unit molded as described above is incorporated into each device for use. It is also possible to directly attach the air filter 1 without forming a frame as described above.
  • the air filter 1 When attaching the air filter 1 to the above-mentioned frame, etc., the air filter 1 may be simply aligned with the front and back, but a part of the side 13 of the air filter 1 that is not joined is made. However, this part may be folded back and assembled as shown in FIG. 17 (A), inserted into a separately formed casing, and used as a filter unit. This may be formed by repeating folding as shown in FIG. 17 (B). Further, as shown in FIG. 18, the air filter 1 may be combined in a V-shape to form a filter unit.
  • the air filter 1 is formed on the base material 51 so that the openings 12a face each other so as to form a V-shape when viewed from the side, thereby forming a V-shaped space.
  • the base material 51 and the closing plate 52 may be made of a material having no air permeability or a material having the same air permeability as the filter material 10.
  • the filter unit By forming the filter unit by each of the above methods, even when the area of the mounting unit of the filter unit is limited, a large number of air filters 1 can be arranged, and the dust collection efficiency can be improved. .
  • the invention of the present application has the following effects because it is configured as described above. In the first invention of the present application, since it is not necessary to form a side plate or the like on the filter medium as in the related art, the processing of the filter medium can be simplified. Also, the workability of the filter material joining process is good.
  • the filter medium in addition to the effects of the first invention, by forming the fold line from the main fold line and the sub fold line, the filter medium can be folded three-dimensionally.
  • the bag-shaped space can be widened.
  • a bag-like space of the air filter can be formed wider, air can be easily introduced into the bag-like space, and the pressure can be increased.
  • a filter with relatively low loss can be provided.
  • the filter medium is joined by utilizing heat generated by ultrasonic vibration, only the minimum necessary parts are locally Since it is possible to form a joint, it is possible to prevent deformation and damage due to a wide range of high heat generated by a conventional method using a heater or the like.
  • a sub fold line is formed at both ends of the filter medium with the main fold line interposed therebetween, and the back fold line is formed.
  • the bag-shaped space can be formed wider by forming two width-folding fold lines in the center of the filter medium.
  • the seventh invention of the present application since it is not necessary to form a side plate or the like on the filter medium as in the related art, the processing of the filter medium can be simplified. Also, the workability is good in the joining process of the filter media.
  • the joining position and the cutting position necessarily coincide with each other, so that there is no problem in positioning.
  • the bag-like space of the air filter can be formed wider, and air is introduced into the bag-like space, and the pressure loss is reduced.

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Filtering Of Dispersed Particles In Gases (AREA)

Abstract

L'invention concerne un filtre à air et un procédé permettant de le fabriquer. Ce filtre à air présente la particularité de comprendre un milieu filtrant (10) qui est façonné de manière à être ondulé en continu par pliage du milieu filtrant (10) en forme de bande, lequel milieu filtrant est constitué d'un non-tissé le long de plis (11) alternativement en projections et en saillies. Les côtés (13) du milieu filtrant (10) sont reliés les uns aux autres de manière à maintenir des plis arrières (11d). Une plaque latérale ne devant pas être formée sur le milieu filtrant (10), le traitement du milieu filtrant (10) peut être facilité. Ainsi, le procédé qui comprend une étape de raccord du milieu filtrant (10) pour permettre l'aptitude au façonnage est amélioré.
PCT/JP2002/012952 2001-12-13 2002-12-11 Filtre a air et procede de fabrication d'un tel filtre a air Ceased WO2003049838A1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
JP2001380212A JP3802801B2 (ja) 2001-12-13 2001-12-13 エアフィルタ及びその製造方法
JP2001-380212 2001-12-13
JP2002-346605 2002-11-29
JP2002346605A JP4295980B2 (ja) 2002-11-29 2002-11-29 エアフィルタ及びその製造方法

Publications (1)

Publication Number Publication Date
WO2003049838A1 true WO2003049838A1 (fr) 2003-06-19

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PCT/JP2002/012952 Ceased WO2003049838A1 (fr) 2001-12-13 2002-12-11 Filtre a air et procede de fabrication d'un tel filtre a air

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Country Link
WO (1) WO2003049838A1 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104923000A (zh) * 2015-06-05 2015-09-23 江阴亿豪环保科技有限公司 空气滤芯装置
EP3582877A4 (fr) * 2017-02-16 2020-10-07 Clarcor, Inc. Paquets de milieu filtrant, procédés de fabrication, et découpe ou soudage par ultrasons
EP3777989A1 (fr) * 2015-08-17 2021-02-17 Parker-Hannificn Corporation Dispositifs de milieu de filtre, procédés de fabrication et presses de milieu de filtre
US11278833B2 (en) 2015-08-17 2022-03-22 Parker-Hamilton Corporation Filter media packs, methods of making, and ultrasonic cutting or welding

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57177318A (en) * 1980-04-15 1982-11-01 Tokyo Roka Kogyosho:Kk Filter element and preparation thereof
JPH11221417A (ja) * 1998-02-09 1999-08-17 Mitsubishi Motors Corp エアクリーナのフィルタエレメント製造方法
JP2002030563A (ja) * 2000-07-17 2002-01-31 Soraana Techno:Kk プリーツ加工エレメント製造装置

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57177318A (en) * 1980-04-15 1982-11-01 Tokyo Roka Kogyosho:Kk Filter element and preparation thereof
JPH11221417A (ja) * 1998-02-09 1999-08-17 Mitsubishi Motors Corp エアクリーナのフィルタエレメント製造方法
JP2002030563A (ja) * 2000-07-17 2002-01-31 Soraana Techno:Kk プリーツ加工エレメント製造装置

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104923000A (zh) * 2015-06-05 2015-09-23 江阴亿豪环保科技有限公司 空气滤芯装置
EP3777989A1 (fr) * 2015-08-17 2021-02-17 Parker-Hannificn Corporation Dispositifs de milieu de filtre, procédés de fabrication et presses de milieu de filtre
US11235270B2 (en) 2015-08-17 2022-02-01 Parker-Hannifin Corporation Filter media packs, methods of making and filter media presses
US11278833B2 (en) 2015-08-17 2022-03-22 Parker-Hamilton Corporation Filter media packs, methods of making, and ultrasonic cutting or welding
US11944927B2 (en) 2015-08-17 2024-04-02 Parker Intangibles Llc Filter media packs, methods of making and filter media presses
EP3582877A4 (fr) * 2017-02-16 2020-10-07 Clarcor, Inc. Paquets de milieu filtrant, procédés de fabrication, et découpe ou soudage par ultrasons
EP4295938A1 (fr) * 2017-02-16 2023-12-27 Parker Hannifin Corp. Paquets de milieu filtrant, procédés de fabrication, et découpe ou soudage par ultrasons

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