Adsorption device

Abstract

An adsorption device (10) comprises: a columnar filter (40) that carries an adsorbent capable of adsorbing a specific substance; a frame that has a plurality of through-holes and a partition wall (22) separating two adjacent through-holes, the frame being disposed such that the opening edges of the through-holes face an end surface of the filter (40) with a gap therebetween; and a plurality of plate-shaped and flexible seal members (50) that are attached to the partition wall (22). The plurality of seal members (50) includes a contact seal member (50C) of which a portion including a distal end (52) is in contact with the end surface of the filter (40), and a non-contact seal member (50N) of which the distal end (52) is not in contact with the end surface of the filter (40). The contact seal member (50C) and the non-contact seal member (50N) are aligned with a gap therebetween in a direction along the end surface of the filter (40).

Description

Adsorption device

[0001] The present disclosure relates to an adsorption device.

[0002] The adsorption device described in Patent Document 1 includes a filter, a frame, and a sealing material. The outer shape of the filter is cylindrical. The filter carries an adsorbent. Further, the filter is rotatable about a central axis as a rotation axis. The filter has a plurality of gaps penetrating from one end face to the other end face. The frame has a plurality of through holes. The frame is attached such that the opening edge of the through hole faces the end face of the filter with a gap therebetween. Also, a duct is connected to the side of the frame opposite to the filter. The air flowing through the duct passes through the through holes of the frame and flows into the gaps of the filter. The sealing material is attached to the surface of the frame facing the filter. The tip of the sealing material is in contact with the end face of the filter.

[0003] Japanese Utility Model Publication No. 04-061617

[0004] In the adsorption device as described in Patent Document 1, when the filter rotates, friction occurs between the end face of the filter and the sealing material. The stronger the sealing material is pressed against the end face of the filter, the more easily the sealing material wears out.

[0005] To solve the above problems, the present disclosure provides a columnar filter carrying an adsorbent capable of adsorbing a specific substance, a plurality of through holes, and a partition wall separating two adjacent through holes, wherein the opening edge of the through hole is arranged to face the end face of the filter with a gap therebetween, a frame, a plurality of sealing materials that are plate-shaped and flexible and are attached to the partition wall, and when the edge of the sealing material opposite to the base end connected to the partition wall is taken as the tip, the plurality of sealing materials include a contact sealing material in which a part including the tip is in contact with the end face of the filter and a non-contact sealing material in which the tip is not in contact with the end face of the filter, and the contact sealing material and the non-contact sealing material are arranged side by side with a gap therebetween in the direction along the end face of the filter.

[0006] Wear of the sealing material due to friction can be reduced.

[0007] Figure 1 is a perspective view of the adsorption device. Figure 2 is a plan view of the filter viewed from a direction along the central axis. Figure 3 is a plan view of the frame viewed from a direction along the central axis. Figure 4 is an enlarged cross-sectional view of the vicinity of the sealing material when no air is being supplied from the blower. Figure 5 is an enlarged cross-sectional view of the vicinity of the sealing material when air is being supplied from the blower.

[0008] <An Embodiment of the Adsorption Device> An embodiment of the adsorption device is described below. Note that the drawings may show enlarged versions of the components for ease of understanding. The dimensional ratios of the components may differ from those of the actual components or those shown in other drawings.

[0009] (Overall configuration of the adsorption device) As shown in Figure 1, the adsorption device 10 comprises a first frame 20, a second frame 30, and a filter 40. The overall shape of the adsorption device 10 is approximately cylindrical. That is, the first frame 20, the second frame 30, and the filter 40 are all approximately cylindrical with roughly the same diameter. In the following, a specific direction parallel to the central axis CA of the filter 40 will be referred to as the first positive direction PD1. The direction opposite to the first positive direction PD1, which is parallel to the central axis CA, will be referred to as the first negative direction ND1.

[0010] The filter 40 is a carrier that supports an adsorbent capable of adsorbing a specific substance. In this embodiment, the "specific substance" is a vaporized organic solvent. The filter 40 has a generally cylindrical shape. The filter 40 is located approximately in the center of the adsorption device 10 in the direction along the central axis CA. The central axis of the filter 40 coincides with the central axis CA of the adsorption device 10. The first end face 41 of the filter 40 faces the first negative direction ND1. The second end face 42 of the filter 40 faces the first positive direction PD1.

[0011] As shown in Figure 2, the filter 40 has a so-called honeycomb structure. That is, the filter 40 has multiple gaps G inside. These multiple gaps G are connected from the first end face 41 to the second end face 42 of the filter 40. Therefore, the air passing through the respective flow passages of the first frame 20 and the second frame 30 can pass between the first end face 41 and the second end face 42 of the filter 40. Note that in Figure 2, the honeycomb structure portion of the first end face 41 is partially omitted from the illustration. Furthermore, the term "honeycomb structure" as used here is not limited to a structure in which multiple specific three-dimensional structures are arranged, but is a concept that includes a structure in which one or more types of three-dimensional structures are arranged.

[0012] Although not shown in the diagram, the filter 40 is connected to a drive source such as an electric motor via a power transmission mechanism such as a gear mechanism. Based on the power from the drive source, the filter 40 can rotate around the central axis CA relative to the first frame 20 and the second frame 30 at a speed of 5 to 15 revolutions per hour. The direction of rotation is clockwise when viewing the filter 40 facing the first positive direction PD1. In this way, the filter 40 is rotatable around the central axis CA.

[0013] As shown in Figure 1, the first frame 20 is positioned on the first negative direction ND1 side relative to the filter 40. The outer shape of the first frame 20 is substantially cylindrical. The central axis of the first frame 20 coincides with the central axis CA of the filter 40.

[0014] As shown in Figure 3, the first frame 20 has a cylindrical body 21 and three partition walls 22. The cylindrical body 21 is cylindrical in shape. The central axis of the cylindrical body 21 coincides with the central axis CA of the filter 40. The outer diameter of the cylindrical body 21 is the same as the outer diameter of the filter 40. Therefore, the first frame 20 has a circular opening edge OP centered on the central axis CA of the filter 40. The opening edge OP on the first positive direction PD1 side of the through hole faces the first end face 41 of the filter 40 at a distance from it.

[0015] The three partition walls 22 each extend from the inner surface of the cylindrical body 21 toward the central axis CA. Each partition wall 22 is arranged at a predetermined interval in the circumferential direction with respect to the central axis CA. Furthermore, the ends of each partition wall 22 on the central axis CA side are connected to each other. That is, each partition wall 22 separates two adjacent through holes.

[0016] The first frame 20 has a first flow passage P1, a second flow passage P2, and a third flow passage P3 as multiple through-holes partitioned by the cylindrical body 21 and the partition wall 22. The first flow passage P1 is the through-hole with the largest volume of space among the three flow passages. The central angle of the sector of the first flow passage P1 is greater than 180 degrees. The second flow passage P2 is a through-hole adjacent to the first flow passage P1 in a counterclockwise direction when viewed facing the first negative direction ND1. The third flow passage P3 is a through-hole adjacent to the second flow passage P2 in a counterclockwise direction when viewed facing the first negative direction ND1, and also adjacent to the first flow passage P1 in a clockwise direction. In other words, the third flow passage P3 is located between the first flow passage P1 and the second flow passage P2. The central angle of the sector of the third flow passage P3 is approximately the same as the central angle of the sector of the second flow passage P2.

[0017] Although not shown in the diagram, a sealing member is interposed between the outer edge of the first end face 41 of the filter 40 and the outer edge of the end face on the first positive direction PD1 side of the first frame 20. This sealing member prevents gas flowing through the first frame 20, the gap G of the filter 40, and the second frame 30 from leaking out of the adsorption device 10. In addition to the sealing member described above, a sealing material 50, which will be described later, is attached to the opening edges of each through hole of the first frame 20 and to the parts where the three partition walls 22 connect near the central axis CA.

[0018] As shown in Figure 1, the second frame 30 is located on the first positive direction PD1 side relative to the filter 40. Although not shown in the figure, the shape of the second frame 30 is the same as that of the first frame 20. That is, the second frame 30 is substantially cylindrical. The central axis of the second frame 30 coincides with the central axis CA of the adsorption device 10. The second frame 30 has a through hole that penetrates from the end on the first negative direction ND1 side to the end on the first positive direction PD1 side. That is, the second frame 30 has a circular opening edge centered on the central axis CA of the filter 40. The opening edge on the first negative direction ND1 side of the through hole faces the second end face 42 of the filter 40 at a distance.

[0019] The second frame 30 has a fourth flow passage, a fifth flow passage, and a sixth flow passage as multiple through-holes partitioned by a cylindrical body and a partition wall. The size and shape of the opening on the first negative direction ND1 side of the fourth flow passage are the same as the size and shape of the opening on the first positive direction PD1 side of the first flow passage P1. The opening of the fourth flow passage faces the opening of the first flow passage P1 via the filter 40. That is, the first flow passage P1 and the fourth flow passage are aligned in a direction parallel to the central axis CA via the filter 40.

[0020] The size and shape of the opening on the first negative direction ND1 side of the fifth flow passage are the same as the size and shape of the opening on the first positive direction PD1 side of the second flow passage P2. The opening of the fifth flow passage faces the opening of the second flow passage P2 via the filter 40. That is, the second flow passage P2 and the fifth flow passage are aligned in a direction parallel to the central axis CA via the filter 40.

[0021] The size and shape of the opening on the first negative direction ND1 side of the sixth flow passage are the same as the size and shape of the opening on the first positive direction PD1 side of the third flow passage P3. The opening of the sixth flow passage faces the opening of the third flow passage P3 via the filter 40. That is, the third flow passage P3 and the sixth flow passage are aligned in a direction parallel to the central axis CA via the filter 40.

[0022] Although not shown in the diagram, a sealing member is interposed between the outer edge of the second end face 42 of the filter 40 and the outer edge of the end face on the first negative direction ND1 side of the second frame 30. This sealing member prevents gas flowing through the gap G of the filter 40 and the second frame 30 from leaking out of the adsorption device 10. In addition to the sealing member described above, a sealing material 50, which will be described later, is attached to the opening edge of each through hole of the second frame 30.

[0023] (Regarding the connection to the drying oven) The adsorption device 10 is used in a state where it is connected to the drying oven. The drying oven is a device used to dry a coating after it has been applied to an electronic component, for example. At this time, the gas discharged from the drying chamber R of the drying oven contains vaporized organic solvents, etc.

[0024] Specifically, as shown in Figure 1, the drying oven has a first duct D1 to a sixth duct D6. The first duct D1 is connected to the first negative direction ND1 end of the first flow passage P1 in the first frame 20. The second duct D2 is connected to the first negative direction ND1 end of the second flow passage P2 in the first frame 20. The third duct D3 is connected to the first negative direction ND1 end of the third flow passage P3 in the first frame 20. The fourth duct D4 is connected to the first positive direction PD1 end of the fourth flow passage in the second frame 30. The fifth duct D5 is connected to the first positive direction PD1 end of the fifth flow passage in the second frame 30. The sixth duct D6 is connected to the first positive direction PD1 end of the sixth flow passage in the second frame 30.

[0025] Figure 1 schematically shows the connection relationship between each frame and each duct. In reality, the first duct D1 is connected to the opening on the first negative direction ND1 side of the first flow passage P1 via a cover, adapter, and sealing member. Therefore, there is no gap between the first duct D1 and the opening on the first negative direction ND1 side of the first flow passage P1. In other words, when gas flows from the first duct D1 to the first flow passage P1, leakage of gas from between the two is prevented. The same applies to the connection relationship between other ducts and flow passages. Known configurations can be appropriately adapted for these connection configurations.

[0026] The drying oven is equipped with a first blower B1, a second blower B2, and a heater HE. The first blower B1 blows gas containing an organic solvent exhausted from the drying chamber R into the first duct D1. The gas blown into the first duct D1 flows through the first duct D1 toward the first positive direction PD1. Therefore, the gas passes through the first negative direction ND1 side of the first duct D1, through the first flow passage P1, and then through the filter 40. The organic solvent components contained in the gas are adsorbed by the adsorbent as they pass through the filter 40. After that, the gas from which the organic solvent components have been removed is exhausted to the fourth duct D4 through the fourth flow passage of the second frame 30.

[0027] The second blower B2 blows air that does not contain organic solvents into the sixth duct D6. The gas supplied to the sixth duct D6 flows through the sixth duct D6 toward the first negative direction ND1. Therefore, the air passes through the sixth flow passage, filter 40, third flow passage P3, and third duct D3 in the order of first positive direction PD1 side of the sixth duct D6. As the air passes through the gap G in the filter 40, it absorbs heat from the filter 40. As a result, the temperature of the air flowing through the third flow passage P3 and third duct D3 rises to about 60 degrees.

[0028] Heater HE is supplied with air that has been flowing through the third duct D3. Heater HE then heats the supplied gas, causing it to become hot air at approximately 200 degrees Celsius. This hot air is supplied from heater HE to the second duct D2. The hot air then passes through the second duct D2, the second flow passage P2 of the first frame 20, and the gap G between the filter 40 in that order. At this time, the portion of the filter 40 facing the second flow passage P2 of the first frame 20 is exposed to the hot air flowing through the second flow passage P2. The filter 40 is also rotating relative to the first frame 20. Therefore, the portion of the filter 40 facing the second flow passage P2 of the first frame 20 has adsorbed organic solvents contained in the gas from the first duct D1. Consequently, the hot air causes the organic solvents adsorbed on the adsorbent to detach from the adsorbent. The hot air containing the desorbed organic solvent is supplied to a predetermined recovery device via the fifth flow passage and the fifth duct D5. In this way, the adsorption device 10 can concentrate and recover the organic solvent from the gas exhausted from the drying chamber R.

[0029] (Regarding sealing materials) Next, we will describe the multiple sealing materials 50 attached to the bulkhead 22 of the first frame 20. Although we will omit the explanation, the sealing materials 50 attached to the bulkhead of the second frame 30 have a similar configuration.

[0030] As shown in Figure 3, the adsorption device 10 is equipped with a plurality of sealing materials 50. Each sealing material 50 is in the shape of a substantially rectangular plate. Each sealing material 50 is attached to the end face of the partition wall 22 of the first frame 20 on the filter 40 side. Specifically, each sealing material 50 is attached to the partition wall 22 between the first flow passage P1 and the second flow passage P2, the partition wall 22 between the second flow passage P2 and the third flow passage P3, and the partition wall 22 between the third flow passage P3 and the first flow passage P1. Each sealing material 50 extends from the end on the cylindrical body 21 side to the end on the central axis CA side. Hereinafter, the end edge of the sealing material 50 that connects to the partition wall 22 is referred to as the base end 51. The end edge opposite to the base end 51 is referred to as the tip end 52.

[0031] The material of the sealing material 50 is metal. Furthermore, the bending rigidity of the sealing material 50 is less than the bending rigidity of the filter 40. Note that the bending rigidity of the sealing material 50 referred to here means the bending rigidity of a single piece of sealing material 50. The bending rigidity of the filter 40 refers to the bending rigidity of the filter 40 itself. In this embodiment, the material of the sealing material 50 is stainless steel. The thickness of the sealing material 50 is 0.2 mm or more and 0.3 mm or less. Therefore, the sealing material 50 is flexible. The length dimension of the sealing material 50 is 1 mm or more and 10 mm or less. The "length dimension" referred to here is the shortest dimension from the base end 51 to the tip end 52 on the surface of the sealing material 50.

[0032] As shown in Figure 4, the multiple sealing materials 50 include a contact sealing material 50C and a non-contact sealing material 50N. A portion of the contact sealing material 50C, including its tip 52, is in contact with the first end face 41 of the filter 40. The tip 52 of the non-contact sealing material 50N is not in contact with the first end face 41 of the filter 40. The contact sealing material 50C and the non-contact sealing material 50N are spaced apart in the direction along the first end face 41 of the filter 40. As mentioned above, the material of the sealing material 50 is metal. Therefore, the bending stiffness of the non-contact sealing material 50N and the bending stiffness of the contact sealing material 50C are smaller than the bending stiffness of the filter 40.

[0033] More specifically, the multiple sealing materials 50 are a first sealing material S1, a second sealing material S2, and a third sealing material S3. In the following, in a virtual plane perpendicular to the central axis CA, the counterclockwise direction when viewed facing the first negative direction ND1, along the circumference of a virtual circle centered on the central axis CA, will be defined as the second positive direction PD2. In other words, the rotation direction of the filter 40 when viewed facing the first negative direction ND1 is the second positive direction PD2. The direction opposite to the second positive direction PD2, i.e., the clockwise direction, will be defined as the second negative direction ND2.

[0034] The first sealing material S1 is the sealing material 50 located furthest towards the second positive direction PD2 in one partition wall 22. The length dimension of the first sealing material S1 is greater than the distance between the partition wall 22 and the first end face 41 of the filter 40. Therefore, the first sealing material S1 is bent so as to be convex toward the second negative direction ND2 and toward the first end face 41 of the filter 40. In other words, the tip 52 of the first sealing material S1 is located toward the second positive direction PD2 than the base end 51 of the first sealing material S1.

[0035] A portion of the first sealing material S1, including its tip 52, is in contact with the first end face 41 of the filter 40, regardless of whether air is being pumped from the first blower B1 and the second blower B2. In other words, the first sealing material S1 is a contact sealing material 50C.

[0036] The second sealing material S2 is a sealing material 50 adjacent to the first sealing material S1 on the second negative direction ND2 side. The length dimension of the second sealing material S2 is smaller than the length dimension of the first sealing material S1. The length dimension of the second sealing material S2 is larger than the distance between the partition wall 22 and the first end face 41 of the filter 40. Therefore, the second sealing material S2 is bent so as to be convex toward the second negative direction ND2 side and toward the first end face 41 side of the filter 40. In other words, the tip 52 of the second sealing material S2 is located toward the second positive direction PD2 side than the base end 51 of the second sealing material S2.

[0037] The tip 52 of the second sealing material S2 contacts the first end face 41 of the filter 40 when no air is being pumped from the first blower B1 and the second blower B2. On the other hand, as shown in Figure 5, when air is being pumped from the first blower B1 and the second blower B2, the tip 52 of the second sealing material S2 does not contact the first end face 41 of the filter 40. Therefore, when considering the state in which air is being pumped from the second blower B2, the second sealing material S2 corresponds to the non-contact sealing material 50N.

[0038] The third sealing material S3 is a sealing material 50 adjacent to the second sealing material S2 on the second negative direction ND2 side. The shortest distance BL2 between the base end 51 of the second sealing material S2 and the base end 51 of the third sealing material S3 is greater than the shortest distance BL1 between the base end 51 of the first sealing material S1 and the base end 51 of the second sealing material S2.

[0039] The length of the third sealing material S3 is smaller than the distance between the partition wall 22 and the first end face 41 of the filter 40. That is, there is a gap or void between the tip 52 of the third sealing material S3 and the first end face 41 when air is not being pumped from the first blower B1 and the second blower B2. In other words, the tip 52 of the third sealing material S3 does not come into contact with the first end face 41 of the filter 40, regardless of whether air is being pumped from the first blower B1 and the second blower B2 or not. Therefore, the third sealing material S3 is a non-contact sealing material 50N.

[0040] As described above, since each sealing material 50 is made of metal, each sealing material 50 has considerable rigidity. Therefore, as shown in Figure 5, although the third sealing material S3 bends due to the pressure of the air blown from the blower, it does not bend enough to come into contact with the other sealing materials 50. In other words, the tip 52 of the third sealing material S3 does not come into contact with the second sealing material S2. Also, the tip 52 of the second sealing material S2 does not come into contact with the first sealing material S1.

[0041] As shown in Figures 4 and 5, due to the relationship between the position and length of each sealing material 50, the shortest distance TL2 between the tip 52 of the second sealing material S2 and the tip 52 of the third sealing material S3 is smaller than the shortest distance TL1 between the base end 51 of the first sealing material S1 and the base end 51 of the second sealing material S2. This relationship is independent of whether or not air is being pumped from the first blower B1 and the second blower B2.

[0042] (Regarding the operation of this embodiment) In the above embodiment, the pressure of the air passing through the second flow path P2 is higher than the pressure of the air passing through the third flow path P3. Therefore, an air pressure is applied so that the air on the second flow path P2 side flows into the third flow path P3. According to the above configuration, a plurality of sealing members 50 are attached to the partition wall 22 between the second flow path P2 and the third flow path P3. Among the plurality of sealing members 50, the third sealing member S3, which is a non-contact sealing member 50N, is located on the second flow path P2 side. The air flowing through the second flow path P2 first hits the third sealing member S3, so the pressure of the air attenuates. Therefore, the pressure in the space between the third sealing member S3 and the second sealing member S2 decreases compared to the pressure in the second flow path P2. Next, the pressure of the air passing between the third sealing member S3 and the first end face 41 of the filter 40 hits the second sealing member S2, so it attenuates again. Therefore, the pressure in the space between the second sealing member S2 and the first sealing member S1 decreases compared to the pressure in the space between the third sealing member S3 and the second sealing member S2. The air passing between the second sealing member S2 and the first end face 41 of the filter 40 is almost blocked by the first sealing member S1, which is a contact sealing member 50C.

[0043] (Regarding the effects of this embodiment) According to the above embodiment, the effects described in the following (1) to (5) are achieved. Hereinafter, the effects of the sealing member 50 attached to the first frame 20 are described, but the same effects can also be obtained for the sealing member 50 attached to the second frame 30.

[0044] (1) In the above embodiment, the plurality of sealing members 50 include a contact sealing member 50C and a non-contact sealing member 50N. The contact sealing member 50C and the non-contact sealing member 50N are arranged at intervals in the direction along the first end face 41 of the filter 40. Since no friction occurs between the non-contact sealing member 50N and the first end face 41, the non-contact sealing member 50N is less likely to wear.

[0045] On the other hand, as the air flows from the second flow path P2 side toward the third flow path P3 side, the air pressure decreases each time it passes beyond the contact sealing material 50C. The first sealing material S1, which is the contact sealing material 50C, only needs to have a sealing property sufficient to resist this decreased pressure. Therefore, since it is not necessary to press the first sealing material S1 too strongly against the first end face 41 of the filter 40, wear of the first sealing material S1 can be suppressed.

[0046] (2) Also, according to the above embodiment, since the plurality of sealing materials 50 includes the non-contact sealing material 50N, the filter 40 is less likely to wear compared to the case where all the sealing materials 50 are in contact with the first end face 41.

[0047] (3) In the above embodiment, in a state where air is being pressure-fed from the first blower B1 and the second blower B2, the tip 52 of the non-contact sealing material 50N does not contact the other sealing materials 50. Thereby, it is possible to suppress the occurrence of a gap between the contact sealing material 50C and the end face of the filter 40 due to the other sealing materials 50 being pushed by the non-contact sealing material 50N.

[0048] (4) In the above embodiment, the bending rigidity of the sealing material 50 is smaller than that of the filter 40. Thereby, even if the contact sealing material 50C rubs against the first end face 41 of the filter 40, the filter 40 is less likely to deform or wear.

[0049] (5) In the above embodiment, the material of the sealing material 50 is metal. Thereby, although the sealing material 50 has flexibility, it is difficult to bend, so it is easier to reduce the wind pressure. Also, wear of the contact sealing material 50C itself can be prevented.

[0050] (6) In the above embodiment, the shortest distance BL1 between the base end 51 of the first seal material S1 and the base end 51 of the second seal material S2 is smaller than the shortest distance BL2 between the base end 51 of the second seal material S2 and the base end 51 of the third seal material S3. As a result, even if the third seal material S3, which is a non-contact seal material 50N, is pushed towards the second positive direction PD2 by wind pressure, the third seal material S3 is less likely to come into contact with the second seal material S2. Furthermore, even if the third seal material S3 comes into contact with the second seal material S2, the larger the shortest distance BL2, the smaller the force with which the third seal material S3 pushes the second seal material S2. Therefore, it is possible to suppress the formation of an excessively large gap between the second seal material S2 and the first end face 41 of the filter 40, which would reduce the pressure attenuation effect.

[0051] <Examples of Modifications> The above embodiment can be implemented with the following modifications. The above embodiment and the following examples of modifications can be combined with each other to the extent that they do not contradict each other technically.

[0052] The configuration of the filter 40 is not limited to the examples of the above embodiment. For example, the filter 40 does not have to have a honeycomb structure, and may be a carrier made of a porous material such as a sponge.

[0053] - The adsorbent supported by the filter 40 is not limited to one that adsorbs organic solvents. For example, the type of adsorbent may be changed in order to use the filter 40 as a deodorizing filter. - The shape and number of through holes of the first frame 20 are not limited to the example of the above embodiment. The first frame 20 only needs to have at least two through holes, and may have four or more through holes. The same applies to the second frame 30.

[0054] In the above embodiment, it is sufficient that at least one of the multiple partition walls 22 has multiple sealing materials 50 attached to it. Note that "multiple sealing materials 50" means that two or more sealing materials 50 are attached to one partition wall 22.

[0055] In the above embodiment, the plurality of sealing materials 50 may be two or more, or four or more. The plurality of sealing materials 50 may include at least one contact sealing material 50C and at least one non-contact sealing material 50N.

[0056] In the above embodiment, the length dimension of the third sealing material S3 may be greater than or equal to the distance between the partition wall 22 and the first end face 41 of the filter 40. That is, if the tip 52 of the third sealing material S3 is not in contact with the first end face 41 of the filter 40 when air is being pumped from the first blower B1 and the second blower B2, the third sealing material S3 can be said to be a non-contact sealing material 50N.

[0057] The sealing material 50 only needs to be flexible, and the material of the sealing material 50 is not limited to the examples of the above embodiment. For example, the material of the sealing material 50 may contain one or more of ferrite and Ni, and may also contain martensite as a main component. Furthermore, the material of the sealing material 50 is not limited to metal. For example, the material of the sealing material 50 may be silicone rubber, or a material containing silicone rubber. In this case, it is preferable that the elastic modulus of the contact sealing material 50C is smaller than the elastic modulus of the end face of the filter 40. That is, it is preferable that the contact sealing material 50C is softer than the end face of the filter 40 that the contact sealing material 50C contacts. In this case, the contact sealing material 50C is less likely to scratch the end face of the filter 40.

[0058] The sealing material 50 only needs to be flexible, and the dimensions of the sealing material 50, such as its thickness and length, are not limited to the above embodiment. For example, the thickness of the sealing material 50 may be less than 0.2 mm or thicker than 0.3 mm.

[0059] - The tip 52 of the non-contact sealing material 50N may be in contact with the sealing material 50 other than the non-contact sealing material 50N. Even in this case, the non-contact sealing material 50N does not come into contact with the filter 40, thus reducing wear on the sealing material 50.

[0060] - The bending rigidity of the sealing material 50 may be greater than that of the filter 40. The less the sealing material 50 deforms, the less the sealing material 50 is worn. - The shortest distance BL1 between the base end 51 of the first sealing material S1 and the base end 51 of the second sealing material S2 may be greater than or equal to the shortest distance BL2 between the base end 51 of the second sealing material S2 and the base end 51 of the third sealing material S3. Even in this case, the adsorption device 10 is equipped with a contact sealing material 50C and a non-contact sealing material 50N, which reduces wear of the sealing material 50.

[0061] 10...Adsorption device CA...Central axis PD1...First positive direction ND1...First negative direction PD2...Second positive direction ND2...Second negative direction 20...First frame 21...Cylindrical body 22...Partition wall OP...Opening edge 30...Second frame 40...Filter 41...First end face 42...Second end face 50...Sealing material 50C...Contact sealing material 50N...Non-contact sealing material 51...Base end 52...Tip S1...First sealing material S2...Second sealing material S3...Third sealing material

Claims

1. An adsorption device comprising: a columnar filter carrying an adsorbent capable of adsorbing a specific substance; a frame having a plurality of through holes and partitions separating two adjacent through holes, wherein the opening edges of the through holes are positioned opposite the end face of the filter at a distance from it; and a plurality of plate-shaped and flexible sealing materials attached to the partitions, wherein, when the end edge of the sealing material opposite to the base end connected to the partition is considered the tip, the plurality of sealing materials include: contact sealing materials in which a portion including the tip is in contact with the end face of the filter; and non-contact sealing materials in which the tip does not contact the end face of the filter, wherein the contact sealing materials and the non-contact sealing materials are arranged at a distance from each other in the direction along the end face of the filter.

2. The adsorption device according to claim 1, wherein the tip of the non-contact sealing material does not come into contact with any other sealing material.

3. The adsorption device according to claim 1 or 2, wherein the bending rigidity of the contact sealing material is less than the bending rigidity of the filter.

4. The adsorption device according to any one of claims 1 to 3, wherein the material of the sealing material is metal.

5. The adsorption device according to any one of claims 1 to 4, wherein the elastic modulus of the contact sealing material is smaller than the elastic modulus of the end face of the filter.

6. The adsorption device according to any one of claims 1 to 5, wherein the filter is columnar in shape extending along a specific central axis, and on a virtual plane perpendicular to the central axis, when one direction along the circumference of a virtual circle centered on the central axis is defined as the positive direction and the direction opposite to the positive direction is defined as the negative direction, the contact seal material is located on the positive direction side of the non-contact seal material, and when a specific seal material is designated as the first seal material among a plurality of seal materials, the seal material adjacent to the first seal material on the negative direction side is defined as the second seal material, and the seal material adjacent to the second seal material on the negative direction side is defined as the third seal material, the shortest distance between the base end of the first seal material and the base end of the second seal material is smaller than the shortest distance between the base end of the second seal material and the base end of the third seal material.

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