JP2008173568A - FILTER ELEMENT, FILTER DEVICE HAVING THE FILTER ELEMENT, AND FILTER ELEMENT FITTING METHOD - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a filter element comprising a filter medium attached to a plate-like frame which can be installed in a case an installation structure of a new filter medium is required along with alteration of an already existing filter medium, which can be installed with no need of drastic alteration of an already existing facilities, and which can deal with such cases at low cost and labor, a filter apparatus comprising the filter element, and a method for installing the filter element. <P>SOLUTION: The filter element comprises a filter medium fixed in a frame and the frame comprises a flat plane-like main body part and flat plane-like standing parts vertically installed in the end parts of the main body part. The filter element has a structure in which the main body part is installed in the periphery of the filter medium and the filter medium is fixed in the main body part and the standing parts generate stress by sagging of the standing parts when a load is applied to reduce the height of the standing parts in the state the main body part is supported. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a filter element that is used by being mounted on an air conditioner, OA equipment, household appliance, etc. in a living environment such as an automobile, a home air cleaner, a total heat exchanger, etc., and a filter device equipped with the filter element In addition, the present invention relates to a method for mounting the filter element.

  For air conditioners, office automation equipment, home appliances, etc. in living environments such as automobiles, home air purifiers, total heat exchangers, etc., bulky single plate-like filter media are used as plate-like frame materials to remove dust. An attached filter element is used for the air inlet / outlet. Alternatively, a filter element formed so that a sheet-like filter medium is bent into a corrugated shape and further attached to a frame member so as to maintain the overall rigidity is used for an air inlet / outlet. Such a filter element is used by being detachably stored in a storage part provided in an air conditioner or the like, but the storage part is designed in accordance with the specifications of the filter element. It is a storage unit according to the size. In addition, a rail for holding the frame portion of the filter element is attached to the storage portion in advance so that the filter element can be attached to and detached from the storage portion, and a fixing structure for fixing the filter element is required. It was. Or the complicated mounting structure for fixing a filter element with a volt | bolt etc. was provided previously so that a filter element could be attached or detached to an accommodating part.

  As such a filter element, for example, as shown in FIG. 19, there is an air cleaner filter element according to the manufacturing method of Patent Document 1. This manufacturing method is a manufacturing method of a filter element having a filter medium 401 having a plurality of corrugated bag portions 400 and a filter medium frame 404 disposed on the outer periphery of the filter medium 401. Specifically, the filter medium 401 is developed. In this state, the corrugated plate 406 and the side plate 409 are integrally formed, and the side plate 409a of one of the corrugated plates forming the respective corrugated portions is brought into contact with the side plate 409b of the other corrugated plate. Or the side plate 409 of any one of the corrugated plates forming each of the corrugated portions and the end of the side opening of the other corrugated plate are brought into contact with each other, and the contacting portion is joined by the ultrasonic wave. This is a filter element manufacturing method whose main purpose is to form a face plate. In the filter element obtained by this manufacturing method, the side plates of the corrugated plates are in contact with each other without overlapping, or the side plates and the corrugated plate are in contact with each other without overlapping. Is shown in the figure. And this filter element is comprised so that the filter medium frame arrange | positioned at the outer periphery of the said filter medium may be shape | molded with a waste paper mixing thermoplastic resin material, and it may join integrally, and the rigidity of the said filter element whole can be ensured. Yes. Further, as shown in FIG. 20, the filter element is stored in an air cleaner 402 and used. The air cleaner 402 includes an air cleaner case 420 that houses the filter element 410 and a cover 418 that covers the air cleaner case 420. The air cleaner case 420 and the cover 418 include flanges 416 and 414, and the flange portion 416 and 414 sandwich the flange portion 412 of the filter medium frame 404 in a sandwich shape.

  Another example of the filter element is an air filter described in the air filter mounting structure of Patent Document 2 as shown in FIG. In this air filter mounting structure, a cooling air suction port 502 or a discharge port 503 and an opening for attaching and detaching the air filter are formed on both side surfaces of a box body 501 on which a circuit element requiring heat radiation is mounted. A combined box-like filter case 504 is attached, and a protrusion 507 that moves up and down by a spring force is provided inside the end of the opening of the filter case 504. On the other hand, for the air filter, A plate 508 that can be locked by the filter case 504 and the protrusion 507 is attached to the air filter 505 integrally with the filter case 504 in a state of being mounted in the filter case, and the protrusion 507 is pushed down so that the plate 508 is integrated. The air filter mounting structure is characterized in that the mounted air filter 505 can be easily removed.

  However, it may be necessary to attach a new filter to a device that was originally planned not to incorporate a filter. In addition, even with an air conditioner with a built-in filter, the dust removal performance required for the air conditioner may be further enhanced according to the user's request after the air conditioner is installed. For example, in the past, a flat filter medium was used to remove coarse dust and inserted into a thin frame material. However, by extending the filter filter life, the cost for replacing the filter will be reduced. It may be. Therefore, in order to prolong the filter life, there is a case where the filter element cannot be mounted in the existing filter housing portion even if an attempt is made to use the filter element formed by bending the above-mentioned sheet-shaped filter medium. Therefore, when trying to mount the filter element, it is necessary to newly install the filter element and the mounting structure of the filter element, and it is necessary to change the design of the mounting structure so far, which not only costs a lot of time and labor, There was a problem that a quick response was not possible.

Japanese Patent Laid-Open No. 11-22214 Japanese Utility Model Publication No. 61-4725

  The present invention solves the above-mentioned problem and relates to a filter element in which a filter medium is attached to a plate-shaped frame member, when a new filter medium mounting structure is required in accordance with a change in the existing filter medium, or existing equipment Even if the filter element is to be installed later due to a design change, or if there is a requirement for special specifications, the filter element can be installed without a large design change of the mounting structure, and there is little cost and effort related to it, and it is quick It is an object of the present invention to provide a filter element, a filter device on which the filter element is mounted, and a filter element mounting method that can cope with the problem.

  In order to solve the above-mentioned problem, in the invention according to claim 1, as illustrated in FIG. 1, the filter medium 20 is a filter element 10 fixed to the frame member 100, and the frame member 100 is a plate-shaped main body. 110 and a plate-like standing portion 120 erected on the end 111 of the main body. The main body 110 is disposed around the filter medium 20 and the filter medium 20 is fixed to the main body 110. When the load is applied so that the height of the standing portion 120 is compressed while the main body portion 110 is supported, the standing portion is bent to generate stress. The filter element characterized by this is used as the solution.

  In the invention according to claim 2, as illustrated in FIGS. 1, 3 and 4, the main body portion 110 and the standing portion 120 of the frame member 100 are formed by bending a flat plate-like member. The filter element according to claim 1 is the solution. In the filter element 10 according to the second aspect, it is not necessary to fix the plate-like standing portion 120 to the end portion 111 of the main body portion using a fixing member, and it can be provided only by bending the plate-like member. There is an advantage that the frame material can be easily formed.

  In the invention according to claim 3, as illustrated in FIGS. 11 to 16, the filter element 10 includes the filter medium 20 in which the sheet-shaped filter medium 21 is formed in a bag shape including a corrugated surface 30 and a side surface 40. In addition, the filter element 10 is formed by fixing the sheet-shaped filter medium 21 to the main body 110 of the frame member 100, and the sheet-shaped filter medium 21 is adjacent to the central portion 30 ′ and the central portion in the unfolded state. The corrugated surface 30 is formed in a corrugated shape having a plurality of peaks and troughs by bending the central portion 30 '. 40 has a notch 42 formed at the end 40 'and is bent between the center 30' and the end 40 '. The ends 40' or the ends 40 'and the center 30' are connected to each other. Joined, and A frame surface 50 is formed adjacent to the side surface 40 by being bent between the end 40 ′ and the tip 50 ′, and the frame surface 50 is on the same surface as the bottom of the valley, and 3. The filter element 10 according to claim 1 or 2, wherein the frame surface 50 is fixed to the main body 110 of the frame member 100. According to the filter element of claim 3, when a filter element formed into a corrugated shape by folding a sheet-like filter medium is required instead of the conventional flat filter medium, or when the filter element is changed by design change to existing equipment Even when there is a demand for special specifications or when there is a request for special specifications, it is possible to easily manufacture filter elements according to the requirements, and there is no need to make a major design change of the manufacturing process or manufacturing equipment, and it is quick This is advantageous in that it is possible to provide a filter element that can be produced in a small lot and can be produced in a wide variety, and that does not require a large-scale capital investment such as a mold.

  In the invention according to claim 4, as illustrated in FIGS. 15 to 17, a second tip portion 70 ′ is provided adjacent to the end portion 40 ′, and is disposed next to the end portion 40 ′. 4. The filter element 10 according to claim 3, wherein a side extending portion 70 is formed by overlapping and joining the other end portion 40 ″ and the second tip end portion 70 ′. According to the filter element of claim 4, even when a bag-like shape with a large size is required, it is possible to join the sheet-like filter medium with an extended portion with a small area. There is a further advantage that a sheet-shaped filter medium having a large area is not required for manufacturing, and the number of joints is small.

  In the invention according to claim 5, as illustrated in FIG. 18, the sheet-shaped filter medium 21 is formed in a bag shape composed of a corrugated surface 30 and a side surface 40, and the corrugated surface 30 is bent at a central portion 30 ′. 5. The filter element according to claim 4, wherein the filter element is formed in a waveform having a plurality of peaks and valleys, and a height of a mountain adjacent to the standing portion 120 is higher than a height of another mountain. 10 was the solution. According to the filter element of the fifth aspect, the height of each peak of the filter element can be freely selected to some extent, so that it is possible to effectively use a complex space in which the filter element can be stored in the air conditioner. is there. In addition, because the height of the mountain adjacent to the standing portion is higher than the height of the other mountain, it is easy to attach the filter element to the air conditioner, and the space at the corner of the air conditioner can be used effectively. There are advantages.

  In the invention according to claim 6, as illustrated in FIGS. 4, 5, 8, and 9, a filter device 200 in which the filter element 10 according to any one of claims 1 to 5 is fixed to a filter case 210. The filter case 210 includes a storage chamber 214 including a support plate 220 that supports the back surface of the main body 110 of the frame member and a side wall 213 having a surface that intersects the surface of the support plate 220. A first protrusion 211 is provided on the surface of the side wall 213 to contact the end portion 121 of the standing portion of the frame member, and the length between the surface of the support plate 220 and the first protrusion 211. Is set to be shorter than the length of the standing portion 120, the end portion 121 of the standing portion is in contact with the first protrusion 211, and the main body portion 110 is supported by the support plate 220. In the above By part 120 is bent, and the filter apparatus 200 the filter element 10 is characterized by comprising been fastened to the filter case 210 and its solutions.

  In the invention according to claim 7, as illustrated in FIGS. 8 and 9, the support plate 220 is configured to abut the other end 112 facing the end 111 of the main body 110 having the upright portion 120. The filter device according to claim 6, wherein a second protrusion 222 is further provided, and the other end portion 112 is in contact with the second protrusion 222.

  In the invention according to claim 8, as illustrated in FIGS. 4, 5, 8, and 9, a filter element mounting method for fixing the filter element 10 to the filter case 210, the filter element 10 includes the filter medium 20. The filter element 10 is fixed to a frame member 100, and the frame member 100 includes a flat plate-like main body portion 110 and a flat plate-like standing portion 120 that is erected on an end portion 111 of the main body portion. The main body part 110 is disposed around the filter medium 20 and the filter medium 20 is fixed to the main body part 110 so that the height of the standing part 120 is compressed while the main body part 110 is supported. The filter case 210 supports the back surface of the main body 110 of the frame material. A storage chamber 214 including a support plate 220 and a side wall 213 having a surface intersecting the surface of the support plate is provided, and the end portion 121 of the standing portion of the frame member is brought into contact with the surface of the side wall 213. The first projection 211 is provided, the length between the surface of the support plate 220 and the first projection 211 is set shorter than the length of the standing portion 120, and the end portion 121 of the standing portion is The filter element 10 is fixed to the filter case 210 by bending the upright portion 120 in a state where the first protrusion 211 is brought into contact with and the main body 120 is supported by the support plate 220. The filter element mounting method characterized by the above is used as the solution.

  According to the present invention, when a filter element is attached to a plate-shaped frame member, a filter element mounting structure is required when a new filter medium mounting structure is required in accordance with a change in an existing filter medium, or a filter element is added by a design change to an existing facility. The filter element can be mounted without major design changes in the mounting structure, even if it is to be installed later or when a special specification is required. It has become possible to provide an element, a filter device equipped with the filter element, and a method for attaching the filter element.

  Hereinafter, preferred embodiments of a filter element according to the present invention, a filter device mounted with the filter element, and a filter element mounting method will be described in detail. A method for mounting the filter element will be described in the description of the filter device.

  As illustrated in FIG. 1, the filter element of the present invention is a filter element 10 in which a filter medium 20 is fixed to a frame member 100, and the frame member 100 includes a plate-like main body part 110 and an end part of the main body part. The filter body 20 is arranged around the filter medium 20, and the filter medium 20 is fixed to the main body section 110.

  The filter medium is a bulky flat filter medium 20 as illustrated in FIGS. 1 and 2, and the filter medium 21 is formed from a corrugated surface and a side surface as illustrated in FIGS. 3, 4 and 12. It is also possible for the filter medium 20 to be formed into a bag shape. If it is a filter medium formed in a bag shape, there is an advantage that the filtration life of the filter medium can be kept long.

  The filter medium 20 is fixed to the frame member 100. The frame member 100 is composed of a flat plate-like main body portion 110 and a flat plate-like standing portion 120 that is erected on the end portion 111 of the main body portion. Yes. The main body 110 is provided with an opening 113, and the filter medium 20 is fixed to the main body 110 so as to cover the opening 113. In this way, the main body 110 is disposed around the filter medium 20 and the filter medium 20 is fixed to the main body 110.

  In FIG. 1, a flat plate-like standing portion 120 is erected on the end portion 111 of the main body portion 110. The aspect of the standing portion is not particularly limited as long as it is flat and fixed to the main body 110. For example, the main body 110 is configured as illustrated in FIGS. It is possible that the member is formed by being bent. In this case, it is not necessary to fix the plate-like standing portion 120 to the end portion 111 of the main body portion using a fixing member, and the standing portion 120 can be provided only by bending the plate-like member. There is an advantage that the frame member 100 can be easily formed. In addition, as an aspect of the standing portion, as illustrated in FIG. 2, two plate-like members constituting the standing portion 120 are overlapped, and an end portion thereof is bent and bonded to the main body portion 110. It is also possible to fix with an agent or an adhesive tape. Also, the shape of the end portion 121 of the standing portion is not particularly limited, and may be linear as shown in FIGS. 1 and 3, or the upper and lower portions of the standing portion 120 may be straight as shown in FIG. It is also possible to have a certain shape.

  Further, as illustrated in FIG. 3, the standing portions can be erected at both ends of the main body portion. In FIG. 3, a standing portion 120a is provided at the end portion 111a of the main body 110 of the frame member 100, and a standing portion 120b is also provided at the other end portion 111b opposite to the end portion 111a. . Also, the height of the standing portion is not particularly limited, but is preferably higher than the height of the filter medium 20, and is advantageous in that stress is easily generated when a load is applied to the end portion 121 of the standing portion 120. There is an advantage that work is easy.

  Further, the frame member 100 may be formed by combining a plurality of frame pieces 110a, 110b, 110c and 110d, as illustrated in FIG. Specifically, in the example of FIG. 10, each frame piece is fixed on the ear portion of the filter medium 20 by a hot melt resin in the form of a combination of the frame pieces 110 c and 110 d, and below the ear portion of the filter medium 20. Each frame piece is fixed by hot-melt resin in the form of a combination of the frame pieces 110a and 110b. In addition, since the standing portion 120 is formed by bending the frame piece 110a in advance, the ear portion of the filter medium 20 is integrated with the frame piece and the ear part of the filter medium 20 so that the ear part of the filter medium 20 becomes the frame material. The main body portion 110 and the standing portion 120 of the frame material are formed by being fixed to the main body portion 100 and bending a flat plate-like member. In FIG. 10, the main body part 110 and the standing part 120 of the frame material are formed only by bending after making a cut in the flat plate member, and there is an advantage that the frame material can be easily formed. . In addition, according to such a method, it is possible to effectively utilize the plate-like member as much as possible, and further, it is possible to reduce unnecessary chips generated from the plate-like member, and it is possible to consider the environment. There is.

In the present invention, as illustrated in FIG. 1, when the load P ₁ is applied to the end portion 121 of the standing portion 120 so that the height of the standing portion 120 is compressed while the main body portion 110 is supported. It has a structure in which stress is generated when the standing portion is bent. Therefore, the standing portion 120 is required to be constructed of a material capable of flexing with respect to the load P _1. In FIG. 1, since the standing portion 120 is orthogonal to the main body portion 110, the length of the cross section of the standing portion 120 (the tip A of the standing portion 120 and the standing portion 120 intersect the main body portion 110). a linear distance) L ₀ between the point B, and a same size as the height of the standing portion 120.

The degree to which the standing portion 120 is bent with respect to the load P ₁ is not particularly limited as long as the generated stress, as shown in FIG. 1 (a), in the state before the load is applied, the standing portion 120 the length of the cross section and L ₀ (the standing portion 120 tip a of the standing portion 120 is straight line distance between the point B which intersects the body portion 110), as shown in FIG. 1 (b), subjected load in the state after the length of the cross section of the standing portion 120 was compared with L ₁ (and the distal end a of the standing portion 120, the standing portion 120 is straight line distance between the point B which intersects the body portion 110) In this case, the value of L ₁ / L ₀ is preferably 0.995 to 0.5, more preferably 0.99 to 0.8, and still more preferably 0.985 to 0.9. . If it exceeds 0.995, sufficient stress may not be generated, and if it is less than 0.5, the degree of bending becomes too large, the gas passage region becomes narrow, and the filtration performance may be inferior.

  Further, the angle formed by the flat plate-like main body portion 110 and the flat plate-like standing portion 120 is not particularly limited, but is preferably 45 degrees to 135 degrees, more preferably 60 degrees to 120 degrees, More preferably, it is 75 to 105 degrees. Thus, it can be said that the angle close to 90 degrees is more preferable because stress is easily generated in the standing portion when a load is applied to the standing portion.

The material of the main body 110 of the frame material is not particularly limited as long as it is a flat plate member having rigidity that can be formed in a band shape so as to surround the filter medium 20. For example, a cardboard board, a synthetic resin A plate, a metal plate, or a composite of these can be used, but a cardboard plate is preferable in view of ease of disposal and cost. As the cardboard, for example, kraft paper having a basis weight of 80 g / m ² , 100 g / m ² or 120 g / m ² can be applied. The material of the standing portion 120 of the frame member, as illustrated in FIG. 1, not particularly limited as long as it is a material capable of flexing with respect to the load P _1, for example, cardboard plates, synthetic resin A plate, a metal plate, or a composite of these can be used, but a cardboard plate is preferable in view of ease of disposal and cost. As the cardboard, for example, kraft paper having a basis weight of 80 g / m ² , 100 g / m ² or 120 g / m ² can be applied.

  The filter element of the present invention is suitably used in a filter device 200 as illustrated in FIGS. FIG. 5 shows a filter device 200 in which the filter element 10 shown in FIG. 4 (a) is fixed to the filter case 210 shown in FIG. 4 (b). FIG. 6 illustrates a filter device 200 that is a total heat exchanger to which the filter element 12 is mounted. FIG. 7 illustrates a filter device 200 that is a duct to which the filter element 12 is attached. FIG. 9 is a diagram illustrating a total heat exchanger similar to that in FIG. 6, and the filter element 10 shown in FIG. 8A is added to the filter case 210 of the total heat exchanger shown in FIG. The filter apparatus 200 which is a total heat exchanger fixed is shown.

  The filter case 210 includes a storage chamber 214 including a support plate 220 that supports the back surface of the frame body 110 and a side wall 213 having a surface that intersects the surface of the support plate 220. The surface of the side wall 213 is provided with a first protrusion 211 for contacting the end 121 of the standing portion 120 of the frame member, and the length between the surface of the support plate 220 and the first protrusion 211. Is set shorter than the length of the standing portion 120. The filter element 10 is filtered by bending the standing portion 120 in a state where the end portion 121 of the standing portion is brought into contact with the first protrusion 211 and the main body portion 120 is supported by the support plate 220. The filter device 200 is configured so that it can be fixed to the case 210.

  The filter element constituting the filter device is not limited to the filter element 10 shown in FIG. 4A, and the filter element 10 of the present invention exemplified in FIGS. Further, the support plate 220 of the filter case is preferably flat so that the back surface of the main body 110 of the frame member 100 can be supported, and has a size larger than the outline of the main body 110 and a central portion. Is provided with an opening 221 so that gas can pass therethrough. As shown in FIG. 4, the opening 221 can have substantially the same size as the opening of the main body 110 of the filter element 10, but depending on the purpose, as shown in FIG. 8B. Further, it may be provided on a part of the support plate 220.

  The side wall 213 of the filter case has a surface that intersects the surface of the support plate 220, and a portion surrounded by the side wall 213 serves as a storage chamber 214 for the filter element. On the surface of at least one wall of the side wall 213, a first protrusion 211 for abutting the end portion 121 of the standing portion 120 of the frame member 100 constituting the filter element 10 is provided. The first protrusion 211 is not particularly limited as long as it can abut the end 121, and has a length extending from end to end of the side wall 213 as shown in FIG. 4B. It can also be a part of the length of the projection from end to end. Further, the protrusion can be provided not only on the surface of one wall but also on the surface of the opposing wall. By providing the two protrusions, the filter element having the two standing portions 120 of the frame member 100 can be fastened. As illustrated in FIGS. 4B and 8B, it is desirable that an opening or door 212 into which the filter element 10 can be inserted is provided in a part of the side wall 213 of the filter case 210.

  The form of the first protrusion 211 is not particularly limited, and may be a plate shape as illustrated in FIG. 4B or a U-shaped cross section as illustrated in FIG. 8B. It is possible to have an L-shaped section or a T-shaped section. Thus, it is preferable that the part where the protrusion 211 contacts the end 121 is linear. In addition, although forms other than these are possible, what does not have a complicated fixing means is preferable.

Further, the length between the surface of the support plate 220 and the first protrusion 211 needs to be set shorter than the length of the standing portion 120 of the frame member 100 of the filter element. In order to ascertain whether or not the setting is made in this way, the surface of the support plate 220 and the first plate are assumed assuming that the filter element 10 is housed in the filter case 210 as illustrated in FIGS. 5 and 9. A certain plane including the protrusion 211 and the standing portion 120 of the filter element is taken as a virtual cross section, and the lengths can be compared on this virtual cross section. Further, as described in the description of the filter element of the present invention, the length L ₀ of the cross section of the standing portion 120 and the length L ₁ of the cross section of the standing portion 120 in a state after the load is applied. And the value of L ₁ / L ₀ is preferably 0.995 to 0.5, more preferably 0.99 to 0.8, and 0.985 to 0.9. More preferably. Accordingly, the length between the surface and the first protrusions 211 of the support plate 220 preferably has a value substantially equal to that of the L _1.

  As described above, since the length between the surface of the support plate 220 and the first protrusion 211 is set to be shorter than the length of the standing portion 120, the end portion 121 of the standing portion is set to the first portion 121. When the standing portion 120 is inserted into the filter case with the main body portion 120 supported by the support plate 220 in contact with the projection 211 of the ridge, the height of the standing portion 120 is compressed to reduce the height. As described above, a load is applied to the standing portion 120, and the standing portion 120 is bent and bent while drawing an arc, for example, by this load. If the material of the upright portion 120 is uniform and the thickness is uniform, the bending shape is an arc. If these are not uniform, the arc is not necessarily an arc but the arc is distorted. And when the standing part 120 bends, the stress which is the repulsive force which the standing part 120 tries to return will arise. Due to this stress, the end portion 121 of the standing portion 120 abuts against the first protrusion 211 so as to be pressed. In addition, a force that presses the main body 120 against the support plate 220 works, and the main body 120 is firmly supported by the support plate 220. In this way, the filter element 10 of the present invention can be fixedly attached to the filter case 210.

  4 and 5, the end portion 111 of the main body portion 110 having the standing portion 120 is not provided with the standing portion at the other end portion 112 facing the end portion. The other end 112 abuts against the wall surface of the side wall 213 of the filter case. Therefore, in this case, the end portion 121 of the standing portion is brought into contact with the first protrusion 211, the other end portion 112 is brought into contact with the wall surface of the side wall 213 of the filter case, and the main body 120 is further supported by the support plate 220. There is an advantage that the filter element 10 can be securely fixed to the filter case 210 by bending the standing portion 120 in the state where the filter element 210 is supported.

  Further, in FIGS. 8 and 9, the end portion 111 of the main body portion 110 having the standing portion 120 is not provided with the standing portion at the other end portion 112 facing the end portion. The support plate 220 is further provided with a second protrusion 222 for contacting the other end 112. Therefore, in this case, the end portion 121 of the standing portion is brought into contact with the first projection 211 and the other end portion 112 is brought into contact with the second projection 222, and the main body 120 is further supported by the support plate 220. In this state, there is an advantage that the filter element 10 can be securely fixed to the filter case 210 by bending the standing portion 120.

  Next, a preferred example of the filter element of the present invention will be specifically described. Preferable examples of the filter element of the present invention include the filter element 10 illustrated in FIGS. 11 to 15 and FIG. The filter element 10 includes a filter medium 20 in which a sheet-shaped filter medium 21 is formed in a bag shape including a corrugated surface 30 and a side surface 40, and the sheet-shaped filter medium 21 is fixed to the main body 110 of the frame material 100. 12 (a), (b), (c) and FIGS. 15 (a), (b), and (c) for explaining the assembly of the filter element of FIG. In the unfolded state, the filter medium 21 is composed of a central portion 30 ′, an end portion 40 ′ adjacent to the central portion, and a tip portion 50 ′ adjacent to the end portion, and the corrugated surface 30 is bent at the central portion 30 ′. The side surface 40 is formed with a notch 42 at the end 40 'and bent between the center 30' and the end 40 '. And end 40 ' Alternatively, the end portion 40 ′ and the central portion 30 ′ are joined, and the frame surface 50 is formed adjacent to the side surface 40 by being bent between the end portion 40 ′ and the tip portion 50 ′. The frame surface 50 is on the same plane as the bottom of the valley, and the frame surface 50 is fixed to the main body 110 of the frame member 100.

  According to the filter element, when a filter element formed into a corrugated shape by folding a sheet-like filter medium is required instead of the conventional flat filter medium, or when the filter element is later changed by design change to existing equipment Even if it is intended to be attached or a special specification is required, a filter element according to the request can be easily manufactured. In addition, there is no need to make major design changes in the manufacturing process or manufacturing equipment, which enables quick response, production of a wide variety of products in small lots, and no large-scale capital investment such as molds. There is an advantage of being.

  The filter element of the present invention can be formed, for example, by the following manufacturing method. That is, the step of forming the corrugated surface 30 into a corrugated shape composed of a plurality of peaks and valleys by bending the central portion 30 ′ of the sheet-like filter medium 21, and cutting the end portion 40 ′ and the central portion 30 ′ and the end portion A step of forming the side surface 40 by bending between the portions 40 ', a step of joining the end portions 40' to each other or the end portion 40 'and the central portion 30', and the end portions 40 'and the tip portion 50'. Forming the frame surface 50 adjacent to the side surface 40 by bending between the frame surface 50 and the frame surface 50 on the same surface as the bottom of the trough, so that the frame surface 50 is the main body of the frame material 100. 110, and a manufacturing method including a step of fixing to 110.

  As a preferred embodiment of the filter element of the present invention, there is a filter element illustrated in FIG. 11, which will be described in detail based on FIGS. 12 (a), 12 (b), and 12 (c) illustrating the assembly of the filter element in FIG. . FIG. 12A is a development view before the sheet-shaped filter medium 21 is bent. The sheet-shaped filter medium 21 has a center portion 30 ′, an end portion 40 ′ adjacent to the center portion, and a tip portion 50 adjacent to the end portion. A mountain fold line 31 and a valley fold line 32 are provided in the center, and a mountain fold line 43 is provided between the center 30 'and the end 40'. Further, a valley fold line 44 is provided between the end 40 'and the tip 50', and a cut 42 is formed in the end 40 '. A second end 60 ′ is provided via the valley fold line 32.

  Next, the sheet-shaped filter medium 21 shown in this development view is folded so that the mountain fold line becomes a mountain and the valley fold line becomes a valley at each fold line, and the end 40 'and the other are arranged next to it. These end portions are overlapped, that is, the end piece 40a and the end piece 40b are overlapped, and are joined entirely or partially. Further, by making the front end portion 50 ′ of the sheet-like filter medium 21 on the same plane as the bottom of the valley, the central portion 30 ′ becomes the corrugated surface 30, the end portion 40 ′ becomes the side surface 40, and the front end portion 50 ′ It becomes the frame surface 50. Then, the second end portion 60 ′ and the tip portion 50 ′ are fixed to the main body portion 110 of the plate-like frame member 100 formed in a band shape so as to surround the periphery of the corrugated surface 30, respectively. (B) The filter element 10 shown in (c) can be formed.

  In this way, the filter element 10 is formed such that the corrugated surface 30 is formed in a corrugated shape having a crest and a valley by bending the central portion 30 ', and the side surface 40 is cut into the end portion 40'. And is formed by being bent at a right angle between the central portion 30 ′ and the end portion 40 ′, and further, the sheet-like filter media 21 is overlapped on the side surface 40, that is, the end piece 40a is disposed adjacent to the end piece 40a. The end piece 40b has the same shape and overlaps, and the end piece 40a and the end piece 40b are joined to the whole or partially at the overlapped portion. Further, a frame surface 50 is formed adjacent to the side surface 40 by being bent at a right angle between the end portion 40 ′ and the tip portion 50 ′. In the frame surface 50, the tip portion piece 50 a and the tip portion piece 50 b are formed. And are overlapping. The frame surface 50 is on the same plane as the bottom of the valley, and the frame surface 50 and the second end portion 60 ′ are fixed to the main body 110 of the frame member 100. In FIG. 12, the angle of the peak of the filter element is 90 degrees.

  In the case of the filter element shown in FIG. 12, since the end portions of the same shape overlap each other, there is an advantage that the side surfaces are reinforced and the shape retaining property of the entire filter element is excellent. Moreover, since the shape of a side surface is formed only by overlapping, there exists an advantage that it is easy to assemble.

  The above-mentioned sheet-like filter medium 21 is joined entirely or partially at the overlapping portion. As a joining method, for example, a method using an adhesive or a sheet-like filter medium that is thermoplastic, ultrasonic fusion is used. There is a method of joining by adhesion or heat fusion. Moreover, as a form joined partially, it is not specifically limited as long as the whole overlapped part is not joined, The form joined in the shape of a dot or a line can be mentioned. Of these, specific examples of joining in a spot form include a method of joining in a spot form by ultrasonic fusion using an ultrasonic stapler or the like, for example, when the sheet filter medium is thermoplastic. Further, for example, there is a method of joining in a dot shape using a paste adhesive. By partially joining, the texture of the side surface 40 after joining becomes flexible, and there is an advantage that it can be easily restored to its original height immediately even for temporary compression of the filter element. In addition, when joining partially with a dotted | punctate form, 0.1-20% of the area ratio of the junction part with respect to the area of the overlapping part is preferable, 0.2-10% is more preferable, 0.4- 7% is more preferable. Moreover, when joining partially in a linear form, 1-50% of the area ratio of the junction part with respect to the area of the overlapping part is preferable, 2-40% is more preferable, 5-30% is further more preferable.

  As a preferred embodiment of the filter element of the present invention, as illustrated in FIG. 13B in addition to FIG. 12, the angle of the crest of the corrugated surface 30 is 120 degrees which is larger than 90 degrees in FIG. As illustrated in FIG. 14B, it is possible that the angle of the peak of the corrugated surface 30 is 60 degrees which is smaller than 90 degrees in FIG. From the viewpoint of practicality, the angle of the mountain is preferably 30 to 150 degrees, and more preferably 50 to 130 degrees. When the angle of the ridge is less than 30 degrees, the area of the tip portion 50 ′ is reduced, so that it is difficult to form the frame surface 50 and it may be difficult to fix it to the main body 110 of the frame member 100. Further, if the angle of the mountain exceeds 150 degrees, the disadvantage that the cost is higher than the advantage of increasing the dust holding capacity by forming the corrugated surface 30 on the sheet-like filter medium 21 may be lost, and the utility may be lost. .

  FIG. 13 shows a case where the peak angle of the filter element is larger than 90 degrees, for example, 120 degrees. FIG. 13A is a development view before the sheet-shaped filter medium 21 is bent. As in FIG. 12A, the sheet-shaped filter medium 21 includes a central portion 30 ′ and an end portion 40 ′ adjacent to the central portion. , And a fold line 31 and a valley fold line 32 are provided in the central part, and a fold line 43 is formed between the central part 30 ′ and the end part 40 ′. Is provided. Further, a valley fold line 44 is provided between the end 40 'and the tip 50', and a cut 42 is formed in the end 40 'and the tip 50'. A second end 60 ′ is provided via the valley fold line 32.

  Next, the sheet-like filter medium 21 shown in this development view is folded at each folding line so that the mountain fold line becomes a mountain and the valley fold line becomes a valley, and the sheet-like filter medium 21 is overlapped on the side surface 40. Join. Then, the second end portion 60 ′ and the tip portion 50 ′ are fixed to the main body portion 110 of the plate-like frame member 100 formed in a band shape so as to surround the periphery of the corrugated surface 30, respectively. Similarly to the above, the filter element 10 shown in FIGS. 13B and 13C can be formed. In FIG. 12 (c), the tip piece 50a and the tip piece 50b have the same shape and are completely overlapped. However, in FIG. 13 (c), the tip piece 50a and the tip piece 50b are overlapped. Are different in that they partially overlap.

  Further, FIG. 14 shows a case where the peak angle of the filter element is smaller than 90 degrees, for example, 60 degrees. FIG. 14A is a development view before the sheet-shaped filter medium 21 is bent. At the upper end and the lower end of the sheet-shaped filter medium 21, a triangular cutout is made with respect to the original rectangular sheet-shaped filter medium. 12A, the sheet-like filter medium 21 includes a central portion 30 ′, an end portion 40 ′ adjacent to the central portion, and a front end portion 50 ′ adjacent to the end portion. A mountain fold line 31 and a valley fold line 32 are provided in the central portion, and a mountain fold line 43 is provided between the central portion 30 ′ and the end portion 40 ′. Further, a valley fold line 44 is provided between the end 40 'and the tip 50', and a cut 42 is formed in the end 40 '. A second end 60 ′ is provided via the valley fold line 32. The above triangular cutout is for avoiding the formation of a portion where the triangular cutout portion of the sheet-shaped filter medium 21 overlaps the end portion 40 ′ or the central portion 30 ′ and is difficult for air to pass through. This is to prevent the filter medium from becoming difficult to join.

  Next, the sheet-like filter medium 21 shown in this development view is folded at each folding line so that the mountain fold line becomes a mountain and the valley fold line becomes a valley, and the sheet-like filter medium 21 is overlapped on the side surface 40. Join. Then, the second end portion 60 ′ and the tip portion 50 ′ are fixed to the main body portion 110 of the plate-like frame member 100 formed in a band shape so as to surround the periphery of the corrugated surface 30, respectively. In the same manner as above, the filter element 10 shown in FIGS. 14B and 14C can be formed. In FIG. 12C, the tip piece 50a and the tip piece 50b have the same shape and are completely overlapped. However, in FIG. 14C, the tip piece 50a and the tip piece 50b are overlapped. Are different in that they partially overlap.

  In the present invention, the angle of the mountain can be other than the aforementioned 90 degrees, 60 degrees, and 120 degrees, and the notches are formed at the upper end portion and the lower end portion of the sheet-like filter medium 21 according to the target angle. Preferably it is done.

  In the filter element described above, the height of the peaks and the interval between the peaks are not particularly limited. However, when the height of the mountain or the interval between the peaks increases, the size of the end portion tends to increase. Then, since the joining portion of the end portion becomes larger in proportion to this, the joining process takes time, and the portion having a high airflow resistance becomes large, which may reduce the filtration performance. Therefore, as a preferable embodiment in which this point is improved, there is a filter element illustrated in FIG.

  FIG. 15A is a development view before folding the sheet-shaped filter medium 21, and the end portions 40 ″ having a smaller area than the end portions 40 ′ are alternately provided with the end portions 40 ′, and the end portions. A second tip 70 'is further provided adjacent to 40', a valley fold line 46 is provided between the center 30 'and the end 40 ", and the end 40' Except that the valley fold line 45 is provided between the second tip portions 70 ′, the sheet-like filter medium 21 has a central portion 30 ′ and an end portion 40 adjacent to the central portion, as in FIG. 'And a tip 50' adjacent to the end, a mountain fold line 31 and a valley fold line 32 are provided in the center, and a mountain fold line between the center 30 'and the end 40'. 43 is provided. Further, a valley fold line 44 is provided between the end 40 'and the tip 50', and a cut 42 is formed in the end 40 'and the tip 50'. A second end 60 ′ is provided via the valley fold line 32.

  Next, the sheet-like filter medium 21 shown in this development view is folded so that the mountain fold line becomes a mountain and the valley fold line becomes a valley at each fold line, and another sheet disposed next to the end 40 '. The end portion 40 ″ and the second tip portion 70 ′ are overlapped and joined to form a side extending portion 70 as shown in FIGS. 16 (a) and 16 (c). The portion 60 ′ and the tip portion 50 ′ are fixed to the main body 110 of the plate-like frame member 100 formed in a band shape so as to surround the periphery of the corrugated surface 30, respectively. 15 (b) (c) can be formed, and the tip 50 'is individually shown as tip pieces 50a, 50b, 50c, but is shown in FIG. As shown, the end portions of the tip pieces overlap each other By being, until the fixed to the main body 110 of a flat frame member 100, so that maintain the shape of the filter element.

Thereafter, as shown in FIG. 16 (a), pushing in the direction of arrow P _2, mountain filter element so as to be positioned symmetrically with respect to the frame member 100, the filter as shown in FIG. 16 (b) It is preferable to form an element. In the case of the filter element of FIG. 16B, the extending portion 70 on the side surface is disposed inside the filter element, so that the extending portion 70 that is a joining portion is not visible from the outside, and when the filter element is installed. There is an advantage that the extending portion 70 is not obstructed and has a good appearance.

  In addition, as a joining form of 2nd front-end | tip part 70 ', the form shown to Fig.17 (a) (b) is also possible. In FIG. 17, the end 40 ′ adjacent to the center 30 ′ and the other end 40 ″ adjacent to the center 30 ′ are joined and the second tip 70 ′ adjacent to the end 40 ′. The filter element shown in Fig. 17 has an advantage that the shape of the filter element can be more reliably maintained.

  As described above, the filter element shown in FIG. 15 is a suitable filter element when the height of the peaks and the pitch between the peaks are relatively large. Specifically, the height of the peaks is preferably 20 to 700 mm. Further, in the case of the filter element shown in FIG. 15, the height of each mountain can be freely changed. As an example, FIG. 18 illustrates a filter element in which the height of a mountain gradually changes. In the filter element of FIG. 18, since the height of each peak of the filter element can be freely selected, there is an advantage that it is possible to effectively use a complex space in which the filter element can be stored in the air conditioner. For example, FIG. 6 is a schematic diagram of the total heat exchanger 200 and shows a mechanism for exchanging heat between the OA that is out-air and the RA that is return air, but the total heat exchanger and the filter case 210 of the total heat exchanger. The filter element 12 of FIG. 18 is installed using the narrow space between the vessel element 220. FIG. 7 shows an example in which the filter element 12 of FIG.

  FIG. 18A is a development before the sheet-shaped filter medium 21 is bent, and the height of the mountain is gradually increased, and the end 40 ′ drawn at the upper part and the lower part are shown. It is the same as the developed view of FIG. 15A except that the drawn end portion 40 ′ has a point-symmetrical positional relationship. Accordingly, in FIG. 18A, as described with reference to FIG. 15A, the end portions 40 ″ having an area smaller than the end portion 40 ′ are alternately provided with the end portions 40 ′, and the end portions 40 ′. A second tip 70 'is further provided adjacent to', a valley fold line 46 is provided between the center 30 'and the end 40 ", and the end 40' and the second Except that the valley fold line 45 is provided between the two tip portions 70 ′, the sheet-like filter medium 21 has a central portion 30 ′ and an end portion 40 ′ adjacent to the central portion, as in FIG. And a tip end portion 50 ′ adjacent to the end portion, a mountain fold line 31 and a valley fold line 32 are provided in the center portion, and a mountain fold line 43 is provided between the center portion 30 ′ and the end portion 40 ′. Is provided. Further, a valley fold line 44 is provided between the end 40 'and the tip 50', and a cut 42 is formed in the end 40 'and the tip 50'. A second end 60 ′ is provided via the valley fold line 32.

  Next, the sheet-like filter medium 21 shown in this development view is folded so that the mountain fold line becomes a mountain and the valley fold line becomes a valley at each fold line, and another sheet disposed next to the end 40 '. The end portion 40 ″ and the second tip portion 70 ′ are overlapped and joined to form a side extending portion 70 as shown in FIGS. 16 (a) and 16 (c). The portion 60 ′ and the tip portion 50 ′ are fixed to the main body 110 of the flat frame member 100 formed in a band shape so as to surround the periphery of the corrugated surface 30, respectively. 18 (b) (c) can be formed, and the tip 50 'is individually shown as tip pieces 50a, 50b, 50c, but is shown in FIG. As shown, the end portions of the tip pieces overlap each other By being, until the fixed to the main body 110 of a flat frame member 100, so that maintain the shape of the filter element.

  In the present invention, the form of fixing the tip 50 'to the main body 110 of the flat frame member 100 is not particularly limited. For example, as the flat frame member 100, the central portion of a rectangular cardboard is rectangular. 2 sheets of cardboard are prepared so as to surround the corrugated surface 30 of the sheet-like filter medium 21, and then the tip 50 'is sandwiched between the two cardboards. It can be fixed to this cardboard board using a hot melt resin. Further, for example, as illustrated in FIG. 10, two or more cardboard plates formed in a band shape so as to surround the corrugated surface 30 of the sheet-like filter medium 21 by combining L-shaped or U-shaped cardboard pieces. It is possible to prepare a sheet and fix it to this cardboard board using hot melt resin so that the tip 50 'is sandwiched between the two upper and lower cardboard boards.

  In the filter element described above, the sheet-like filter medium 21 is formed in a bag shape composed of the corrugated surface 30 and the side surface 40, so that the side surface also has a filtering function, so that only the corrugated surface has a filtering function. Thus, there is an advantage that the filtration life is long. Moreover, since a sheet-like filter medium can be used effectively, there is an advantage that it is environmentally friendly by saving resources and waste.

  Next, a preferable embodiment of the sheet-like filter medium 21 that can be applied as the filter element of the present invention will be described. The sheet-shaped filter medium is not particularly limited as long as it is a breathable material, and for example, a fiber substrate such as a woven fabric, a knitted fabric, a net, or a nonwoven fabric can be applied. Among these, a non-woven fabric is particularly preferable because it can efficiently use the total area of the fiber surface widely and has many small voids formed by the fibers. In addition, the nonwoven fabric can be a composite nonwoven fabric in which a nonwoven fabric is combined with a breathable material such as a net. In particular, a composite nonwoven fabric in which a nonwoven fabric is combined with a net is excellent in rebound resilience and can be said to be a more preferable form.

  The nonwoven fabric (hereinafter referred to as the nonwoven fabric substrate) as the fiber substrate is not particularly limited, and the structure of the nonwoven fabric substrate is typically a fiber length of 15 to 100 mm and a crimp number of 5 to 30 / inch. Generally called a dry method, in which a fiber called a staple fiber is formed on a fiber web using a card machine or an air array device, and then the constituent fibers are bonded together using an adhesive fiber or an adhesive. There is a nonwoven fabric obtained by a manufacturing method. Since the nonwoven fabric by the dry method has many fibers oriented in the thickness direction, there is an advantage that the thickness is large and the thickness is not easily crushed. In addition, the staple fiber is crimped so that it can be opened by a card machine or the like, so that it becomes a bulky nonwoven fabric base material and has an advantage of excellent repulsive force in the thickness direction against compression. is there.

  In the present invention, as described above, as a preferable form of the sheet-shaped filter medium, a sheet-shaped filter medium in which a nonwoven fabric is reinforced with a net-like support can be exemplified. For example, a composite nonwoven fabric obtained by combining a nonwoven fabric with a synthetic resin net can be used. Examples of such a composite nonwoven fabric include a composite nonwoven fabric in which a fiber web and a net are entangled and integrated and / or a composite nonwoven fabric in which constituent fibers are bonded.

  Examples of the web constituting fiber constituting the fiber web include polyclar fiber, polyvinylidene chloride fiber, polyvinyl chloride fiber, polyester fiber, polyamide fiber, acrylic fiber, modacrylic fiber, polyvinyl alcohol fiber, polypropylene fiber, polyethylene fiber, and polyurethane. Synthetic fibers such as fibers, regenerated fibers such as rayon and viscose, semi-synthetic fibers such as acetate, inorganic fibers such as carbon fibers and glass fibers, etc. Among these, polychlore with excellent flame resistance Fiber, polyvinylidene chloride fiber, modacrylic fiber, and polyvinyl chloride fiber can be preferably used.

  Moreover, it is also preferable that the web constituent fiber contains a heat-shrinkable fiber. When the heat-shrinkable fibers are heat-shrinked to develop crimps, the entanglement between the fiber web and the net becomes stronger, and the fiber web and the net are more difficult to peel off. Therefore, it is preferable that 40% by weight or more of heat-shrinkable fiber is contained, and more preferably 50% by weight or more. As this heat-shrinkable fiber, a fiber composed of a single component such as a polyvinyl chloride fiber can be applied, but the cross-sectional shape is a composite composed of a plurality of resin components such as a core-sheath type, an eccentric type, and a side-by-side type. If it is a fiber, it can be more suitably applied because it is more easily contracted and easily entangled with the net.

The heat-shrinkable fiber in the present invention is a fiber web having a length of 40 cm, a width of 25 cm, and a basis weight of 40 g / m ² formed from 100% of the same fiber by the card method, and heat-treated at the melting point temperature of the fiber for 30 seconds. This refers to a fiber having an area shrinkage of 20% or more. In addition, when a fiber is a composite fiber, it heat-processes with melting | fusing point temperature of the resin component which has the lowest melting | fusing point among resin exposed on the fiber surface. For example, in the case of the core-sheath type composite fiber, the treatment is performed at the melting point temperature of the sheath resin, and in the case of the side-by-side type composite fiber, the treatment is performed at the melting point temperature of the resin having the lower melting point. The area shrinkage rate is a value obtained by the following equation.

  Examples of combinations of resin components constituting the composite fiber include, for example, polypropylene / polyethylene, polyester / low melting point polyester, polypropylene / low melting point polypropylene, nylon 66 / nylon 6, nylon 6 / low melting point nylon, polyester / nylon 6, nylon 6 / Polyethylene, polyester / polypropylene, etc.

  In addition, when the low melting-point resin component of the said composite fiber has thermal adhesiveness, a web constituent fiber can be thermally bonded by this resin component. As described above, when the low melting point resin component of the composite fiber has thermal adhesiveness, the fiber shape can be maintained by the high melting point resin component. There is an advantage that there is no fear of peeling.

  The fineness of such a web-constituting fiber is preferably 3.3 to 33 dtex. If it is less than 3 deniers, the entanglement with the net tends to decrease, and if it exceeds 33 dtex, the gap of the fiber web tends to increase, and the collection efficiency tends to decrease. More preferably, it is 11-22 dtex suitable for removing coarse dust.

  After laminating the fiber web composed of the fibers as described above and the net, a sheet-like filter medium can be obtained by entanglement integration treatment and / or adhering the web constituent fibers. Examples of the adhesion of the web constituent fibers include adhesion with an adhesive fiber or an adhesive. The adhesive fiber is not necessarily a composite fiber, and may be a single component, for example, polyethylene fiber, polypropylene fiber, polyamide fiber, polyester fiber, polyvinyl chloride fiber, polyurethane fiber, or the like.

  The fiber web can be obtained, for example, by a card method, an air array method, a spun bond method, a melt blow method, a wet method, or the like. In addition, in order to improve the handleability, the fiber web can be lightly entangled by applying a needle or a water flow.

In the present invention, as the net constituting the composite nonwoven fabric, a net formed by thermoforming or filaments can be used. As the thermoformed net, for example, a net having a structure in which a crossing portion of a net yarn is fused by direct molding in a biaxially stretched net can be used. Further, the mesh size (interval between yarns) is not particularly limited, and is preferably 1 to 45 mm, more preferably 3 to 30 mm, and still more preferably 4 to 15 mm. The surface density is not particularly limited, is preferably from 5 to 200 g / ^{m 2,} more preferably from 10 to 100 g / ^{m 2,} and still more preferably from 15 to 50 g / ^{m 2.}

  As the net constituting the composite nonwoven fabric, in addition to the thermoformed net, a filament woven one can be used. If the net is a filament woven net, it is easy to make the mesh fine and pleated. There is an advantage that it is easy to do. Hereinafter, a net woven from this filament will be described.

  If the composite filament is included as the filament constituting the net, only one resin component of the composite filament can be fused, and the other resin component can be prevented from being fused. It can be maintained, and a net that does not deform or change the distance between filaments can be obtained even if washed.

  As the composite filament, those having a cross-sectional shape of a core-sheath type, an eccentric type, and a side-by-side type can be used. As combinations of constituent resin components, for example, 6 nylon / polyethylene, polyester / nylon 6, polypropylene / polyethylene, polypropylene / An ethylene-vinyl acetate copolymer, polyester / polypropylene, polyester / polyethylene, 6 nylon / 66 nylon, high-melting polyester / low-melting polyester, high-density polyethylene / low-density polyethylene, and the like can be used.

  In addition, as filaments other than composite filaments, for example, recycled fibers such as rayon, semi-synthetic fibers such as acetate, polyamide fibers, polyvinyl alcohol fibers, polyvinylidene chloride fibers, polyvinyl chloride fibers, polyester fibers, poly Synthetic fibers such as acrylonitrile fibers, polyethylene fibers, polypropylene fibers, polyurethane fibers, and polyclar fibers, and inorganic fibers such as carbon fibers can be used.

  In order to impart rigidity to the net, these filaments preferably have a fineness of 200 dtex or more, and if the fineness is 1000 dtex or less, they have excellent workability when pleating. A more preferable fineness is 250 to 650 dtex.

  Such a filament is preferably woven at a rate of 4 to 20 yarns / inch. If the number of driven wires is more than 20 / inch, the distance between the filaments is short, and the net rigidity is excellent, but it may be difficult to temporarily reduce the height of the filter element. Pressure loss may be high. Further, when the entanglement process described later is performed by a needle punch method, needle breakage may easily occur. On the other hand, if the number of driven wires is less than 4 / inch, the distance between the filaments becomes long, so that the rigidity of the entire net is lost and the rebound resilience is poor and the filter element may be easily deformed. A more preferable driving number is 5 to 17 / inch.

In the present invention, as the net constituting the composite nonwoven fabric, a thermoformed net or the like can be used in addition to the filament woven. As the thermoformed net, for example, a net having a structure in which a crossing portion of a net yarn is fused by direct molding in a biaxially stretched net can be used. Further, the mesh size (interval between yarns) is not particularly limited, and is preferably 1 to 45 mm, more preferably 3 to 30 mm, and still more preferably 4 to 15 mm. The surface density is not particularly limited, is preferably from 5 to 200 g / ^{m 2,} more preferably from 10 to 100 g / ^{m 2,} and still more preferably from 15 to 50 g / ^{m 2.}

  The fiber web and net as described above are laminated and entangled. Examples of the entanglement process include a fluid entanglement method such as a needle punch method and a water flow. Among these, the entanglement treatment by the needle punch method can be entangled and integrated with the net without crushing the thickness of the fiber web. Can be long. Thus, the integration of the fiber web and the net is performed by the entanglement process, so that the web constituent fibers after the integration are in a state of three-dimensional winding.

The entanglement process by the needle punch method is preferably performed at a needle density of 20 to 300 needles / cm ² . When the needle density is less than 20 / cm ² , the entanglement with the net is weak, and it is easy to peel off with respect to the change in the height of the filter element, and when it exceeds 300 / cm ² , the net is severely damaged by the needle. Because.

  After this entanglement treatment, the web constituent fibers are adhered to obtain a sheet-like filter medium. More preferably, the web constituent fibers can be bonded to the net so that the fiber web and the net are more difficult to peel off. In addition, it is preferable to perform adhesion | attachment of this web constituent fiber under no pressure. This is in order to maintain the three-dimensional winding and shrinkage of the web constituent fibers when they are intertwined and integrated so as not to reduce the dust holding capacity.

  This adhesion can be carried out by applying an emulsion type, suspension type, solvent type, or powder type adhesive, and the fibers having the thermal adhesive properties as described above are included in the web constituting fiber. In addition, it is also possible to adhere | attach with the fiber, and these can also be used together. Furthermore, when the filament constituting the net has adhesiveness, it is also possible to use filament adhesion together.

Examples of emulsion-type, suspension-type, solvent-type, or powder-type adhesives include vinyl chloride, acrylate ester, ethylene-vinyl acetate copolymer, polyvinyl acetate, synthetic rubber, polyurethane, and polyester. It is preferable to use 10 to 70 g / m ² in terms of solid content. If it is less than 10 g / m ^2, despite the use of an adhesive, and the fibrous web and the net is easily peeled off with respect to the change in the height of the filter element, if it exceeds 70 g / m ^2, the pressure This is because loss increases. More preferably, it is 20-60 g / m < ² >.

  The sheet-like filter medium obtained as described above has excellent rebound resilience because the fiber web and the net are intertwined and integrated, and the web constituent fibers are bonded in a state of three-dimensional winding. Even if an external pressure is applied to the element, the fiber web and the net do not peel off, and it can be said that the filter medium has a large dust holding capacity.

As described above, various filter media can be used as filter elements depending on the purpose of use, but considering the formation of a bag, the thickness of the filter media of the present invention is 0. It is preferably 2 to 15 mm, more preferably 0.4 to 10 mm, and still more preferably 0.6 to 8 mm. If it is less than 0.2 mm, the dust removal efficiency may be insufficient, and if it exceeds 15 mm, it may be difficult to form a bag. In addition, this thickness says the value at the time of 1-g load per 1 cm < ² > unit area.

  In addition, the filtration performance of the sheet-like filter medium preferably functions as a filter for removing coarse dust. Specifically, in the test method defined in ASHRAE 52.1-1992, using ASHRAE TEST DUST, When evaluated by the mass method, when the test condition is a wind speed of 2.5 m / second, the mass method average efficiency is preferably 30 to 99%, the mass method average efficiency is preferably 30 to 95%, More preferably, the average efficiency is 40 to 90%. When the mass method average efficiency is less than 30%, coarse dust removal is insufficient, and when the mass method average efficiency exceeds 99%, the pore diameter of the sheet filter medium becomes too fine, so the sheet filter medium immediately. There is a possibility that the pressure loss before and after reaches the limit and the life is shortened, and it cannot be used as the sheet-like filter medium for the filter element of the present invention.

The initial pressure loss of the sheet-like filter medium is preferably 100 Pa or less, more preferably 50 Pa or less, and even more preferably 35 Pa or less when the test condition is a wind speed of 2.5 m / sec. In addition, when the final pressure drop 200 Pa, preferably dust supply amount is 130 g / ^{m 2} or more, 200 g / ^{m 2} or more, more preferably, 300 g / ^{m 2} or more is more preferable.

  Moreover, if it is a filter element shown to FIGS. 12-14, 5-150 mm is preferable, as for the height of a filter element, 8-100 mm is more preferable, and 15-50 mm is still more preferable. The mountain interval is preferably 5 to 100 mm, more preferably 8 to 75 mm, and still more preferably 15 to 50 mm. 15 and 18, the height of the filter element is preferably 20 to 700 mm, more preferably 30 to 600 mm, and still more preferably 40 to 500 mm. The crest interval is preferably 10 to 300 mm, more preferably 15 to 150 mm, and still more preferably 30 to 100 mm.

  The overall size of the filter element is such that the dimension of one side of the air inflow surface is 80 to 500 mm in the case of a filter element that is used by being mounted on an air conditioner in a living environment such as an automobile or a home air cleaner. Is preferable, 100 to 400 mm is more preferable, and 150 to 300 mm is still more preferable. Also, in the case of filter elements used as gas removal filters such as package filters, fan coil units, and central air conditioning filter units in air purifiers installed in buildings, factories, offices, etc., one side of the air inflow surface Is preferably 200 to 1500 mm, more preferably 300 to 1000 mm, and still more preferably 400 to 700 mm.

  The filtration performance of the filter element preferably functions as a filter for removing coarse dust. Specifically, in the test method defined in ASHRAE 52.1-1992, using ASHRAE TEST DUST, the mass method is used. When evaluated, when the wind speed is 2.5 m / sec, the mass method average efficiency is preferably 30 to 99%, the mass method average efficiency is preferably 30 to 95%, and the mass method average efficiency is More preferably, it is 40 to 90%. When the mass method average efficiency is less than 30%, coarse dust removal is insufficient, and when the mass method average efficiency exceeds 99%, the pore diameter of the sheet filter medium becomes too fine, so the sheet filter medium immediately. There is a possibility that the pressure loss before and after reaches the limit, shortens the service life, and cannot be used as a filter for removing coarse dust.

The initial pressure loss of the filter element is preferably 50 Pa or less, more preferably 20 Pa or less, and even more preferably 15 Pa or less when the test condition is a wind speed of 2.5 m / sec. In addition, when the final pressure drop 200 Pa, preferably dust supply amount 200 g / ^{m 2} or more, 300 g / ^{m 2} or more, more preferably, 450 g / ^{m 2} or more is more preferable.

  Examples of the present invention will be described below, but these are only suitable examples for facilitating the understanding of the present invention, and the present invention is not limited to the contents of these examples.

(Filtration performance test method for filter element or sheet filter medium-mass method)
In the test method specified in ASHRAE 52.1-1992, after supplying ASHRAE TEST DUST at a wind speed of 2.5 m / sec until the pressure loss reaches 200 Pa, the dust supply amount (g / m ² ) and the mass method Find the average efficiency (%). The dust supply amount (g / m ² ) is obtained by calculating the supply amount (g) of ASHRAE TEST DUST with respect to the area (m ² ) of the bottom surface of the filter element excluding the frame surface or frame member. The initial pressure loss (Pa) is a value measured at a wind speed of 2.5 m / sec.

(Example 1)
After blending 60% by weight of flame-retardant modacrylic fiber with a fineness of 15 dtex and a fiber length of 51 mm and 40% by mass of polyester fiber with a fineness of 20 dtex and a fiber length of 76 mm, carding and then fiber orientation direction by cross layer Were crossed to obtain a fiber web having a surface density of 45 g / m ² and a thickness of 15 mm. Next, a biaxially stretched net having an areal density of 35 g / m ² , a net having a mesh of 6 × 6 mm with a crossover portion of the yarn fused directly by molding, and the fiber web, After laminating on this net, needle punching was performed at a needle density of 50 / cm ² and a needle depth of 16 mm, and the fiber web and net were entangled and integrated. Next, a vinyl chloride emulsion was sprayed from both sides as an adhesive and dried with a drier to obtain a sheet-like filter medium in which the constituent fibers were bonded to each other with an adhesive having a solid content of 40 g / m ² . The surface density of this sheet-like filter medium was 120 g / m ² and the thickness was 5.0 mm. Moreover, according to the filtration performance test of this sheet-like filter medium, the dust supply amount was 116 g (429 g / m ² ), the mass method average efficiency was 56%, and the initial pressure loss was 23 Pa.

  Next, as shown in the development view of FIG. 12 (a), the sheet-like filter medium 21 has a central portion 30 ′ and an end portion 40 ′ (end piece 40a, which is adjacent to the central portion). An end piece 40b) and a tip 50 'adjacent to the end, and a mountain fold line 31 and a valley fold line 32 are provided in the center, and a mountain fold is formed between the center 30' and the end 40 '. Line 43 was provided. Further, a valley fold line 44 is provided between the end 40 'and the tip 50', and a cut 42 is made in the end 40 '. A second end 60 ′ is provided via the valley fold line 32.

  Next, the sheet-shaped filter medium 21 was bent so that the mountain fold line was a mountain and the valley fold line was a valley at each fold line, and the end piece 40a, which is an end 40 ', was placed next to the fold line. The end pieces 40b were overlapped and joined. Furthermore, by making the front end portion 50 ′ of the sheet-like filter medium 21 on the same plane as the bottom of the valley, the central portion 30 ′ is the corrugated surface 30, the end portion 40 ′ is the side surface 40, and the front end portion 50 ′ is The frame surface 50 was used. In addition, in the part which the sheet-like filter media 21 overlaps, the sheet-like filter media 21 was joined by ultrasonically fusing the spot-like three places using the ultrasonic stapler. By this joining, the area ratio with respect to the whole joining portion was 3.3%.

Next, as shown in FIG. 10, a cardboard board made of kraft paper having a basis weight of 80 g / m ² was prepared, and four frame pieces 110a, 110b, 110c and 110d were produced from the cardboard board. That is, the frame piece 110a in which the standing portion 120 was formed was produced by bending the cardboard board after making a cut. Moreover, the strip-shaped frame piece 110b and the L-shaped frame pieces 110c and 110d were produced. Then, each frame piece was fixed by hot melt resin on the ear portion of the filter medium 20 composed of the second end portion 60 ′ and the tip portion 50 ′ in a form in which the frame pieces 110c and 110d were combined. Each frame piece was fixed with hot melt resin under the ear portion of the filter medium 20 in the form of a combination of the frame pieces 110a and 110b. In this way, the filter element 10 shown in FIGS. 4A and 12B and 12C was formed.

  In this way, the filter element 10 is configured such that these frame pieces and the ears of the filter medium 20 are integrated, whereby the ears of the filter medium 20 are fixed to the main body 110 of the frame material 100, and The flat plate-like member is bent to form a frame main body 110 and an upright portion 120. The angle formed by the main body 110 and the flat upright portion 120 is 100. It was a degree. Further, in the filter element 10, the corrugated surface 30 is formed in a corrugated shape having a crest and a valley formed by bending the central portion 30 ', and the side surface 40 is cut at the end portion 40' and the center. It is formed by being bent at a right angle between the portion 30 ′ and the end portion 40 ′, and further, the sheet-like filter medium 21 is overlapped on the side surface 40, that is, the end piece 40 a and the end piece disposed adjacent thereto. 40b has the same shape and overlaps, and the end piece 40a and the end piece 40b are partially joined at the overlapped portion. Further, a frame surface 50 is formed adjacent to the side surface 40 by being bent at a right angle between the end portion 40 ′ and the tip portion 50 ′. In the frame surface 50, the tip portion piece 50 a and the tip portion piece 50 b are formed. Overlapped. Further, the frame surface 50 is on the same surface as the bottom of the valley, and the frame surface 50 and the second end portion 60 ′ are fixed to the main body 110 of the frame member 100. The angle of the peak of the filter element was 90 degrees.

Further, the height of the filter material portion of this filter element is 26 mm, the distance between the peaks is 47 mm, the width of the frame material is 30 mm, the height of the standing portion is 220 mm, and the entire filter element The size of was 510 mm long × 530 mm wide. Moreover, according to the filtration performance test of this filter element, the dust supply amount was 183 g (677 g / m ² ), the mass method average efficiency was 70%, and the initial pressure loss was 10 Pa.

(Example 2)
In the same manner as in Example 1, a sheet-like filter medium having a surface density of 120 g / m ² was obtained. Next, as shown in the developed view of FIG. 15 (a), the sheet-shaped filter medium is provided with end portions 40 ″ having an area smaller than the end portion 40 ′ alternately with the end portions 40 ′, and the end portions. A second tip 70 'is further provided adjacent to the portion 40', a valley fold line 46 is provided between the central portion 30 'and the end 40 ", and the end 40' and the second A sheet-like filter medium 21 shown in the developed view of FIG. 15A was obtained in the same manner as in Example 1 except that the valley fold line 45 was provided between the tip portions 70 ′.

Next, the sheet-like filter medium 21 shown in this development view is folded so that the mountain fold line becomes a mountain and the valley fold line becomes a valley at each fold line, and another sheet disposed next to the end 40 '. The end portion 40 ″ and the second tip portion 70 ′ are overlapped and joined to form a side extending portion 70 as shown in FIGS. 16A and 16C. Then, the second end portion is formed. By fixing the part 60 ′ and the tip part 50 ′ to the main body part 110 of the plate-like frame member 100 formed in a band shape so as to surround the periphery of the corrugated surface 30, respectively, as in the first embodiment, 15 (b) and 15 (c) were formed, and the tip end pieces 50a, 50b, and 50c are connected by overlapping the end portions of the tip end pieces as shown in FIG. To fix to the main body 110 of the flat frame member 100. In the meantime, the shape of the filter element can be maintained until the sheet filter medium 21 is overlapped, and the sheet filter medium 21 is joined by heat-sealing linearly using a heat sealer. area ratio to the whole of the joint portion was 10%. then, as shown in FIG. 16 (a), pushing in the direction of arrow P _2, the mountain of the filter element is positioned symmetrically with respect to the frame member 100 Thus, the filter element shown in FIG. 16B was formed.

Further, the height of the filter material portion of this filter element is 178 mm, the distance between the peaks is 59 mm, the width of the frame material is 30 mm, the height of the standing portion is 210 mm, and the main body 110 The angle formed by the plate-like standing portion 120 was 100 degrees, and the overall size of the filter element was 270 mm long × 240 mm wide. Moreover, according to the filtration performance test of this filter element, the dust supply amount was 76 g (1173 g / m ² ), the mass method average efficiency was 70%, and the initial pressure loss was 9.0 Pa.

(Example 3)
In the same manner as in Example 1, a sheet-like filter medium having a surface density of 120 g / m ² was obtained. Next, as shown in the developed view of FIG. 18 (a), the height of the peaks was gradually increased with respect to this sheet-shaped filter medium, and the end 40 ′ and the lower part depicted in the upper part. The sheet-shaped filter medium 21 shown in the developed view of FIG. 18 (a) is the same as in Example 2 except that the end portions 40 ′ of the same shape depicted in FIG. Got.

Next, the sheet-shaped filter medium 21 shown in this development view is folded so that the mountain fold line becomes a mountain and the valley fold line becomes a valley at each fold line, and another sheet disposed next to the end 40 '. The end portion 40 ″ and the second tip portion 70 ′ are overlapped and joined to form a side extending portion 70 as shown in FIGS. 16A and 16C. Then, the second end portion is formed. By fixing the part 60 ′ and the tip part 50 ′ to the main body part 110 of the plate-like frame member 100 formed in a band shape so as to surround the periphery of the corrugated surface 30, respectively, as in the second embodiment, 18 (b) and 18 (c) were formed, and the tip end pieces 50a, 50b, and 50c are connected by overlapping the end portions of the tip end pieces as shown in FIG. To fix to the main body 110 of the flat frame member 100. In the meantime, the shape of the filter element can be maintained until the sheet filter medium 21 is overlapped, and the sheet filter medium 21 is joined by heat-sealing linearly using a heat sealer. area ratio to the whole of the joint portion was 8%. Thereafter, as shown in FIG. 16 (a), pushing in the direction of arrow P _2, the mountain of the filter element is positioned symmetrically with respect to the frame member 100 Thus, the filter element 10 shown in FIGS. 8A and 18B and 18C was formed.

Further, the height of the filter material portion of this filter element is 58 mm, 122 mm, and 178 mm, the distance between the peaks is 59 mm, the width of the frame body is 30 mm, and the height of the standing portion is Was 210 mm, and the angle formed by the main body 110 and the plate-like standing portion 120 was 100 degrees, and the overall size of the filter element was 270 mm long × 240 mm wide. Further, according to the filtration performance test of this filter element, the dust supply amount was 50 g (772 g / m ² ), the mass method average efficiency was 70%, and the initial pressure loss was 10 Pa.

Example 4
A filter case 210 shown in FIG. 4B was prepared. The filter case 210 includes a storage chamber 214 including a support plate 220 that supports the back surface of the main body 110 of the frame material of the filter element according to the first embodiment, and a side wall 213 having a surface that intersects the surface of the support plate 220. ing. Further, a first protrusion 211 is provided on the surface of the side wall 213 to contact the end 121 of the standing portion 120 of the frame member, and the length between the surface of the support plate 220 and the first protrusion 211 is long. The length (215 mm) is set shorter than the length (220 mm) of the standing portion 120. The filter element 10 is filtered by bending the standing portion 120 in a state where the end portion 121 of the standing portion is brought into contact with the first protrusion 211 and the main body portion 120 is supported by the support plate 220. It can be fixed to the case 210. The support plate 220 has a flat plate shape so that the back surface of the main body 110 of the frame member 100 can be supported. An opening 221 having a size substantially the same as the opening of the main body 110 of the filter element 10 is provided so as to pass therethrough. Further, a door 212 into which the filter element 10 can be inserted is provided in a part of the side wall 213 of the filter case 210.

  Next, as shown in FIG. 5, the filter element 10 of the first embodiment is inserted from the door 212 of the filter case 210, the end portion 121 of the standing portion of the filter element 10 is brought into contact with the first protrusion 211, and With the main body portion 120 supported by the support plate 220, the standing portion 120 was inserted into the filter case. Then, a load is applied to the erected portion 120 so as to compress the height of the erected portion 120 and reduce the height, and this load causes the erected portion 120 to bend and bend while drawing an arc. What? Then, the bending of the standing portion 120 causes a stress that is a repulsive force that the standing portion 120 tries to return to, and the stress causes the end 121 of the standing portion 120 to press against the first protrusion 211. Abutted as in In addition, a force for pressing the main body 120 against the support plate 220 worked, and the main body 120 was supported by the support plate 220. In this way, the filter device 200 can be obtained by attaching the filter element 10 to the filter case 210 in a fixed manner. Note that the end portion 111 of the main body portion having the standing portion 120 is not provided with a standing portion at the other end portion 112 opposite to the end portion, but the other end portion 112 is provided as a filter case. The filter element 10 can be securely fixed to the filter case 210 by being brought into contact with the wall surface of the side wall 213.

(Example 5)
A filter case 210 for a total heat exchanger shown in FIG. 8B was prepared. The filter case 210 includes a storage chamber 214 including a support plate 220 that supports the back surface of the main body 110 of the frame material of the filter element according to the third embodiment, and a side wall 213 having a surface that intersects the surface of the support plate 220. ing. Further, a first protrusion 211 is provided on the surface of the side wall 213 to contact the end 121 of the standing portion 120 of the frame member, and the length between the surface of the support plate 220 and the first protrusion 211 is long. The length (205 mm) is set shorter than the length (210 mm) of the upright portion 120. The filter element 10 is filtered by bending the standing portion 120 in a state where the end portion 121 of the standing portion is brought into contact with the first protrusion 211 and the main body portion 120 is supported by the support plate 220. It can be fixed to the case 210. The support plate 220 has a flat plate shape so that the back surface of the main body 110 of the frame member 100 can be supported. The support plate 220 has a size larger than the outline of the main body 110 and a part of the central portion. An opening 221 is provided to allow gas to pass through. Further, a door 212 into which the filter element 10 can be inserted is provided in a part of the side wall 213 of the filter case 210.

  Next, as shown in FIG. 9, the filter element 10 of Example 3 is inserted from the door 212 of the filter case 210, the end portion 121 of the standing portion of the filter element 10 is brought into contact with the first protrusion 211, and With the main body portion 120 supported by the support plate 220, the standing portion 120 was inserted into the filter case. Then, a load is applied to the erected portion 120 so as to compress the height of the erected portion 120 and reduce the height, and this load causes the erected portion 120 to bend and bend while drawing an arc. What? Then, the bending of the standing portion 120 causes a stress that is a repulsive force that the standing portion 120 tries to return to, and the stress causes the end 121 of the standing portion 120 to press against the first protrusion 211. Abutted as in In addition, a force for pressing the main body 120 against the support plate 220 worked, and the main body 120 was supported by the support plate 220. In this way, the filter device 200 can be obtained by attaching the filter element 10 to the filter case 210 in a fixed manner. Note that the end portion 111 of the main body portion having the standing portion 120 is not provided with a standing portion at the other end portion 112 opposite to the end portion, but the other end portion 112 is provided as a filter case. The filter element 10 is securely fixed to the filter case 210 by abutting against a second protrusion 222 provided in advance on the support plate 220.

It is a figure which shows an example of the filter element of this invention, (a) is a figure before the height of a standing part is compressed, (b) is a figure after the height of a standing part is compressed. It is. It is a figure which shows another example of the filter element of this invention. It is a figure which shows another example of the filter element of this invention. (A) is a figure which shows another example of the filter element of this invention, (b) is a figure which shows an example of the filter case for inserting the filter element of this invention. It is a figure which shows an example of the filter apparatus of this invention formed by mounting | wearing with the filter element of this invention. It is a figure which shows the total heat exchanger which is an example of the filter apparatus of this invention. It is a figure which shows the duct which is an example of the filter apparatus of this invention. (A) is a figure which shows another example of the filter element of this invention, (b) is a figure which shows another example of the filter case for inserting the filter element of this invention. It is a figure which shows the total heat exchanger which is an example of the filter apparatus of this invention formed by mounting | wearing with the filter element of this invention. It is a figure explaining the manufacturing process of the filter element of this invention. It is a figure which shows an example of the filter element of this invention, (a) is a top view, (b) is a side view. It is a figure which shows an example of the filter element of this invention, (a) is an expanded view, (b) is a side view, (c) is a top view. It is a figure which shows another example of the filter element of this invention, (a) is an expanded view, (b) is a side view, (c) is a top view. It is a figure which shows another example of the filter element of this invention, (a) is an expanded view, (b) is a side view, (c) is a top view. It is a figure which shows another example of the filter element of this invention, (a) is an expanded view, (b) is a side view, (c) is a top view. It is a figure explaining the formation method of a filter element, and the joining method of a sheet-like filter medium. It is a figure explaining the joining method of a sheet-like filter medium. It is a figure which shows another example of the filter element of this invention, (a) is an expanded view, (b) is a side view, (c) is a top view. It is a figure of the conventional filter element. It is a figure of the conventional filter apparatus. (A) is a figure of the conventional filter apparatus, (b) is the sectional drawing, (c) is a figure of the conventional filter element.

Explanation of symbols

10, 11, 12 Filter element 20 Filter medium 21 Sheet-shaped filter medium 30 Corrugated surface 30 'Central part 31 Mountain fold line 32 Valley fold line 40 Side face 40' End part 40 "End part 40a, 40b End piece 42 Cut 43 Mountain fold line 44 Valley fold line 45 Valley fold line or mountain fold line 50 Frame surface 50 'Tip portions 50a, 50b, 50c Tip portion piece 60' Second end portion 70 Side extension portion 70 'Second tip portion 100 Frame member 110 Main body portions 110a, 110b 110c, 110d Frame piece 111, 111a, 111b Main body end 112 Main body other end 113 Opening 120, 120a, 120b Standing part 121, 121a, 121b Standing part end 200 Filter device (all Heat exchanger, duct)
210 Filter case 211 First protrusion 212 Opening or door 213 Filter case side wall 214 Storage chamber 220 Support plate 221 Opening 222 Second protrusion 230 Total heat exchanger element

Claims (8)

  The filter element is a filter element fixed to a frame material, the frame material comprising a flat plate-like main body portion and a flat plate-like standing portion erected at an end of the main body portion, around the filter medium. The standing portion is disposed when a load is applied so that the height of the standing portion is compressed while the body portion is disposed and the filter medium is fixed to the body portion and the body portion is supported. A filter element characterized by having a structure in which stress is generated by bending.   The filter element according to claim 1, wherein a main body portion and the standing portion of the frame member are formed by bending a flat plate-like member.   The filter element is a filter element having the filter medium in which a sheet-shaped filter medium is formed in a bag shape having a corrugated surface and a side surface, and the sheet-shaped filter medium being fixed to a main body of the frame material. The sheet-like filter medium is in a developed state, and includes a central portion, an end portion adjacent to the central portion, and a tip portion adjacent to the end portion, and the corrugated surface is bent at the central portion to form a plurality of peaks. The side surface is formed in a corrugated shape, and the side surface is cut at the end portion and is bent between the central portion and the end portion, and the end portions or the end portion and the central portion are further formed. And a frame surface is formed adjacent to the side surface by being bent between an end portion and a tip portion, and the frame surface is on the same plane as the bottom of the valley, and the frame The surface is fixed to the main body of the frame member The filter element according to claim 1 or 2, characterized in that there.   A second tip is provided adjacent to the end, and the other tip disposed next to the end overlaps and joins the second tip, thereby extending the side surface. The filter element according to claim 3, wherein a portion is formed.   The sheet-like filter medium is formed in a bag shape composed of a corrugated surface and a side surface, and the corrugated surface is formed in a corrugated shape composed of a plurality of peaks and valleys by being bent at the center, and adjacent to the standing portion. The filter element according to claim 4, wherein a height of a mountain to be raised is higher than a height of another mountain.   A filter device in which the filter element according to any one of claims 1 to 5 is fixed to a filter case, wherein the filter case includes a support plate that supports a back surface of a main body portion of the frame member and a support plate. A storage chamber comprising a side wall having a surface intersecting the surface, and a first protrusion for contacting an end of the standing portion of the frame member is provided on the surface of the side wall, The length between the surface of the support plate and the first projection is set to be shorter than the length of the upright portion, the end of the upright portion is in contact with the first projection, and the main body portion In a state where the filter element is supported by the support plate, the filter element is fixed to the filter case by bending the standing portion.   The support plate is further provided with a second projection for abutting the other end facing the end of the main body having the standing portion, and the other end abuts on the second projection. The filter device according to claim 6, wherein the filter device is provided.   A filter element mounting method for fixing a filter element to a filter case, wherein the filter element is a filter element in which a filter medium is fixed to a frame member, and the frame member includes a plate-shaped main body portion and a main body portion. A plate-like standing portion erected at the end, the main body portion is disposed around the filter medium and the filter medium is fixed to the main body portion, and the main body portion is supported. When the load is applied so that the height of the upright portion is compressed, the upright portion is bent and the stress is generated, and the filter case covers the back surface of the main body portion of the frame member. A storage chamber comprising a supporting plate to be supported and a side wall having a surface intersecting with the surface of the supporting plate is provided, and a first end for contacting an end of the standing portion of the frame member on the surface of the side wall. Protrusion of the said support The length between the surface of the first projection and the first projection is set to be shorter than the length of the standing portion, the end portion of the standing portion is brought into contact with the first projection, and the body portion is further supported A filter element mounting method, wherein the filter element is fixed to the filter case by bending the standing portion while being supported by a plate.

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