Catalyst device

Abstract

Provided is a catalyst device capable of suppressing leakage of gas from a gap between a housing and a catalyst carrier. A catalyst device (10) is provided with a catalyst carrier (40), a first frame (20), and a seal (50). The catalyst carrier (40) carries a catalyst capable of adsorbing a specific substance. The first frame body (20) has a through hole. The sealing member (50) has a flexible plate shape and is attached to the first housing (20). The first frame body (20) is attached to the catalyst carrier (40) such that the opening edge of the through hole faces a first end surface (41) of the catalyst carrier (40) with a gap therebetween. A portion of the main surface (51) of the seal (50) including the tip (E2) is in contact with the catalyst carrier (40). The plurality of seals (50) are in contact with each other and overlap each other in the direction in which the opening of the through-hole faces.

Description

Technical Field

[0001] The present invention relates to a catalyst device. Background Art

[0002] The catalyst device disclosed in Patent Document 1 includes a catalyst carrier and a housing. The catalyst carrier carries a catalyst. The catalyst carrier is roughly cylindrical. The catalyst carrier has a first end face, a second end face, and a plurality of gaps. The first end face and the second end face are roughly planar. Each gap extends from the first end face toward the second end face. The housing has a through hole. That is, in the housing, there is a first opening and a second opening as the end of the through hole. The catalyst carrier is inserted into the through hole of the housing. Therefore, the first end face of the catalyst carrier is exposed from the first opening. The second end face of the catalyst carrier is exposed from the second opening. Therefore, the air flowing in from the first end face side of the catalyst carrier passes through the gaps of the catalyst carrier and flows out to the second end face side. In addition, when the air passes through the catalyst carrier, the specific adsorbed substance contained in the air is adsorbed on the catalyst.

[0003] Furthermore, the catalyst device disclosed in patent document 1 includes a frame. The frame is mounted on a surface having a first opening in the outer surface of the housing. The frame is in the shape of a plate having a through hole. The through hole of the frame is divided into a plurality of regions. A portion of the frame covers the first opening. Thus, the frame divides the first opening into a plurality of regions. In addition, the frame includes a seal. The seal has elasticity. The seal is located between the frame and the first end face of the catalyst carrier and is located at the boundary portion of the plurality of regions. The shape of the seal is semi-cylindrical. When viewed in a section perpendicular to the direction in which the seal extends, an edge of the outer edge of the seal corresponding to the diameter of the semicircle is connected to the frame. The front end of the edge of the outer edge of the seal corresponding to the circumference is in contact with the first end face.

[0004] Prior Art Literature

[0005] Patent Literature

[0006] Patent Document 1: Japanese Patent No. 4772197 Summary of the invention

[0007] Problem that the invention aims to solve

[0008] In a catalyst device such as that disclosed in Patent Document 1, a cylindrical air supply pipe is connected to the first opening of the housing. Gas discharged from an external device flows through the air supply pipe. At this time, the pressure of the gas flowing through the air supply pipe may vary. Moreover, when the pressure of the gas increases, the seal is elastically deformed, and the gas may leak from between the seal and the catalyst carrier.

[0009] Technical solutions to solve problems

[0010] In order to solve the above-mentioned problems, the present invention is a catalyst device as follows, that is, comprising: a columnar catalyst carrier, carrying a catalyst capable of adsorbing a specific substance; a frame, having a through hole; and a plate-shaped seal, mounted on the frame and having flexibility, the frame being mounted on the catalyst carrier so that the opening edge of the through hole is spaced apart and facing the end face of the catalyst carrier, and when the end edge of the seal on the opposite side of the base end connected to the frame is set as the front end, a portion of the main surface of the seal including the front end contacts the catalyst carrier, and portions of a plurality of the seals including the front ends contact and overlap with each other in the direction toward which the opening of the through hole faces.

[0011] Effects of the Invention

[0012] It is possible to suppress gas leakage from between the frame and the catalyst carrier. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a perspective view of a catalyst device.

[0014] Figure 2 This is the front view of the first frame.

[0015] Figure 3 It is a front view of the catalyst carrier.

[0016] Figure 4 is an enlarged view of the seal.

[0017] Figure 5 It is a cross-sectional view of the seal and the frame.

[0018] Figure 6 It is a structural diagram of the test device.

[0019] Description of Reference Numerals

[0020] 10: Catalyst device;

[0021] CA: central axis;

[0022] 20: Frame 1;

[0023] 30: Frame 2;

[0024] 50: seal;

[0025] 51: Main side;

[0026] E1: base end;

[0027] E2: front end;

[0028] 40: catalyst carrier;

[0029] 41: 1st end surface;

[0030] G: Gap. DETAILED DESCRIPTION

[0031] <One Embodiment of Catalyst Device>

[0032] Hereinafter, one embodiment of the catalyst device will be described. In addition, in the drawings, the components are sometimes shown enlarged for easy understanding. The size ratio of the components may be different from the actual size ratio of the components or the size ratio of the components in other drawings.

[0033] (About the overall structure of the catalyst device)

[0034] like Figure 1 As shown, the catalyst device 10 includes a first frame 20, a second frame 30 and a catalyst carrier 40. The outer shape of the catalyst device 10 as a whole is a roughly cylindrical shape extending along the central axis CA. That is, the first frame 20, the second frame 30 and the catalyst carrier 40 all have a roughly cylindrical outer shape with roughly the same diameter. In addition, a specific direction in the direction parallel to the above-mentioned central axis CA is set as the positive direction PD. The direction opposite to the positive direction PD in the direction parallel to the central axis CA is set as the negative direction ND.

[0035] The first frame 20 includes an end on the negative direction ND side of the catalyst device 10. The first frame 20 is roughly cylindrical. The central axis of the first frame 20 coincides with the central axis CA of the catalyst device 10. The first frame 20 has a plurality of through holes that penetrate from the end on the negative direction ND side to the end on the positive direction PD side. Specifically, the first frame 20 has a cylindrical barrel C and three partition walls W. Each partition wall W extends from the inner surface of the barrel C toward the central axis CA. Each partition wall W is arranged at a given interval in the circumferential direction with the central axis CA as the center. In addition, the ends of each partition wall W on the central axis CA side are connected to each other. As a result, in the first frame 20, there are a first flow passage 21, a second flow passage 22, and a third flow passage 23 as a plurality of through holes. As shown in FIG. Figure 2As shown, when viewed in the direction along the center axis CA of the first frame body 20, each circulation passage is roughly fan-shaped. The first circulation passage 21 is a through hole with the largest volume in the space. The central angle of the fan of the first circulation passage 21 is greater than 180 degrees. The second circulation passage 22 is a through hole adjacent to the counterclockwise direction of the first circulation passage 21 when viewed in the negative direction ND. The third circulation passage 23 is a through hole adjacent to the counterclockwise direction of the second circulation passage 22 and adjacent to the clockwise direction of the first circulation passage 21 when viewed in the negative direction ND. In other words, the third circulation passage 23 is located between the first circulation passage 21 and the second circulation passage 22. The central angle of the fan of the third circulation passage 23 is roughly the same as the central angle of the fan of the second circulation passage 22.

[0036] like Figure 1 As shown, the second frame 30 includes an end on the positive direction PD side of the catalyst device 10. 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 roughly cylindrical. The central axis of the second frame 30 is consistent with the central axis CA of the catalyst device 10. The second frame 30 has a plurality of through holes that penetrate from the end on the negative direction ND side to the end on the positive direction PD side. Specifically, in the second frame 30, there are a fourth flow passage, a fifth flow passage, and a sixth flow passage as a plurality of through holes.

[0037] The size and shape of the opening on the negative direction ND side of the fourth flow passage are the same as the size and shape of the opening on the positive direction PD side of the first flow passage 21. The opening of the fourth flow passage is opposite to the opening of the first flow passage 21 via the catalyst carrier 40. That is, the first flow passage 21 and the fourth flow passage are arranged in a direction parallel to the central axis CA via the catalyst carrier 40.

[0038] The size and shape of the opening on the negative direction ND side of the fifth flow passage are the same as the size and shape of the opening on the positive direction PD side of the second flow passage 22. The opening of the fifth flow passage is opposite to the opening of the second flow passage 22 via the catalyst carrier 40. That is, the second flow passage 22 and the fifth flow passage are arranged in a direction parallel to the central axis CA via the catalyst carrier 40.

[0039] The size and shape of the opening on the negative direction ND side of the sixth flow passage are the same as the size and shape of the opening on the positive direction PD side of the third flow passage 23. The opening of the sixth flow passage is opposite to the opening of the third flow passage 23 via the catalyst carrier 40. That is, the third flow passage 23 and the sixth flow passage are arranged in a direction parallel to the central axis CA via the catalyst carrier 40.

[0040] The catalyst carrier 40 is a carrier that carries a catalyst capable of adsorbing a specific substance. In this embodiment, the specific substance is a vaporized organic solvent. Figure 1 As shown, the outer shape of the catalyst carrier 40 as a whole is roughly cylindrical. The catalyst carrier 40 is located between the first frame 20 and the second frame 30. The central axis of the catalyst carrier 40 is consistent with the central axis CA of the catalyst device 10. The first end face 41 of the catalyst carrier 40 faces the first frame 20 side. The second end face 42 of the catalyst carrier 40 faces the second frame 30 side.

[0041] In addition, the first frame 20 is mounted on the catalyst carrier 40 so that the opening edge of the through hole on the positive direction PD side is spaced apart from the first end face 41 of the catalyst carrier 40. The second frame 30 is mounted on the catalyst carrier 40 so that the opening edge of the through hole on the negative direction ND side is spaced apart from the second end face 42 of the catalyst carrier 40. Moreover, although not shown in the figure, a sealing member is disposed between the outer edge of the first end face 41 in the catalyst carrier 40 and the outer edge of the end face on the positive direction PD side in the first frame 20. Similarly, a sealing member not shown in the figure is disposed between the outer edge of the second end face 42 in the catalyst carrier 40 and the outer edge of the end face on the negative direction ND side in the second frame 30. Therefore, it is possible to prevent the gas flowing in the first frame 20, the catalyst carrier 40, and the second frame 30 from leaking to the outside of the catalyst device 10. Furthermore, a seal 50 different from the above-mentioned sealing member is attached to the opening edges of each through hole of the first frame body 20 and the opening edges of each through hole of the second frame body 30. The seal 50 will be described in detail later.

[0042] Although omitted from the figure, the catalyst carrier 40 is connected to a driving source such as a motor via a power transmission mechanism such as a gear mechanism and a roller. Based on the power from the driving source, the catalyst carrier 40 can rotate relative to the first frame 20 and the second frame 30 at a speed of more than 5 revolutions per minute and less than 15 revolutions per minute with the central axis CA as the center. When viewed in the positive direction PD, the direction of rotation is the direction of clockwise rotation.

[0043] like Figure 3 As shown, the catalyst carrier 40 has a so-called honeycomb structure. That is, the catalyst carrier 40 has a plurality of gaps G inside. Moreover, the plurality of gaps G extend from the first end face 41 to the second end face 42. Therefore, the air passing through each flow passage of the first frame 20 and the second frame 30 can pass between the first end face 41 side and the second end face 42 side of the catalyst carrier 40. In addition, Figure 3In the figure, the portion of the first end surface 41 that forms the honeycomb structure is partially omitted. In addition, the so-called honeycomb structure mentioned here is not limited to a structure in which a plurality of hexagonal three-dimensional structures are arranged, but also includes a structure in which a plurality of one or more three-dimensional structures are arranged.

[0044] (Regarding the connection with the drying furnace)

[0045] The catalyst device 10 is used in a state of being connected to a drying furnace. The drying furnace is, for example, a device for drying a coating material after it is applied to an electronic component. At this time, the gas exhausted from the drying chamber R of the drying furnace contains vaporized organic solvents and the like.

[0046] Specifically, Figure 1 As shown, the drying furnace has a first duct D1 to a sixth duct D6. The first duct D1 is connected to the negative direction ND side of the first flow passage 21 in the first frame 20. The second duct D2 is connected to the negative direction ND side of the second flow passage 22 in the first frame 20. The third duct D3 is connected to the negative direction ND side of the third flow passage 23 in the first frame 20. The fourth duct D4 is connected to the positive direction PD side of the fourth flow passage in the second frame 30. The fifth duct D5 is connected to the positive direction PD side of the fifth flow passage in the second frame 30. The sixth duct D6 is connected to the positive direction PD side of the sixth flow passage in the second frame 30.

[0047] In addition, Figure 1 , the connection relationship between each frame and each pipeline is schematically illustrated. In fact, the first pipeline D1 is connected to the opening on the negative direction ND side of the first circulation passage 21 via a cover, an adapter, a sealing member, etc. Therefore, there is no gap between the first pipeline D1 and the opening on the negative direction ND side of the first circulation passage 21. In other words, when the gas flows from the first pipeline D1 to the first circulation passage 21, it is possible to prevent the gas from leaking between the two. This is also the case with respect to the connection relationship between other pipelines and circulation passages. Regarding their connection structure, a known structure can be appropriately adopted.

[0048] The drying furnace includes a first blower B1, a second blower B2, and a heater HE. The first blower B1 blows the gas containing the organic solvent exhausted from the drying chamber R to the first duct D1. The gas blown to the first duct D1 flows in the first duct D1 toward the positive direction PD side. Therefore, the gas passes through the catalyst carrier 40 from the negative direction ND side of the first duct D1 through the first flow passage 21. Moreover, the organic solvent component contained in the gas is adsorbed on the catalyst when passing through the catalyst carrier 40. Then, the gas from which the organic solvent component is removed is discharged to the fourth duct D4 through the fourth flow passage of the second frame 30.

[0049] The second blower B2 blows air that does not contain an organic solvent to the second duct D2. The gas supplied to the second duct D2 flows in the second duct D2 toward the positive direction PD side. Therefore, the air passes from the negative direction ND side of the second duct D2 to the second flow passage 22, the catalyst carrier 40, the fifth flow passage, and the fifth duct D5 in sequence. In addition, the air absorbs the heat of the catalyst carrier 40 when passing through the gap G of the catalyst carrier 40. Therefore, the temperature of the air flowing in the fifth flow passage and the fifth duct D5 rises to about 60 degrees.

[0050] The air flowing through the 5th duct D5 is supplied to the heater HE. Then, the heater HE heats the supplied gas. As a result, the air becomes hot air of about 200 degrees. The hot air is supplied from the heater HE to the 6th duct D6. Then, the hot air passes through the 6th duct D6 and the 6th flow passage of the 2nd frame 30, and then passes through the inside of the catalyst carrier 40. At this time, the portion of the catalyst carrier 40 facing the 6th flow passage of the 2nd frame 30 is exposed to the hot air flowing in the 6th flow passage. In addition, the catalyst carrier 40 rotates relative to the 2nd frame 30. Therefore, the portion of the catalyst carrier 40 facing the 6th flow passage of the 2nd frame 30 is in a state of adsorbing the organic solvent contained in the gas from the 1st duct D1. Therefore, the hot air causes the organic solvent adsorbed on the catalyst to be separated from the catalyst. The hot air containing the separated organic solvent is supplied to a given recovery device through the 3rd flow passage 23 and the 3rd duct D3. In this way, the catalyst device 10 can concentrate and recover the organic solvent from the gas discharged from the drying chamber R.

[0051] (About seals)

[0052] like Figure 2 As shown in FIG. 1 , the catalyst device 10 includes a plurality of seals 50. The plurality of seals 50 are mounted on the surface side of the first frame 20 facing the positive direction PD. In the present embodiment, the seals 50 are mounted along the outer periphery of the opening edge of the second flow passage 22 and the outer periphery of the opening edge of the third flow passage 23. Figure 4 as well as Figure 5 As shown, the seal 50 is bent so that the main surface 51 is in contact with the catalyst carrier 40. In the following, the main surface 51 of the seal 50 refers to one of the outer surfaces of the seal 50 with the largest area.

[0053] like Figure 4 As shown in FIG. 1 , the sealing member 50 is in the shape of a rectangular plate. The material of the sealing member 50 is conductive silicone. Therefore, the sealing member 50 is flexible. Figure 5As shown, the thickness dimension T of the seal 50 is greater than 0.1 mm and less than 0.4 mm. Preferably, the thickness dimension T of the seal 50 is greater than 0.2 mm and less than 0.3 mm. In addition, as other materials, the seal 50 can also be made of metal, and SUS is particularly preferred. In addition, when the seal 50 is made of metal, it is made thin enough to have elastic force.

[0054] A portion of the main surface 51 of the seal 50 including the front end E2 is in contact with the catalyst carrier 40. Specifically, the seal 50 is mounted on a partition wall W that separates two adjacent through holes (i.e., two adjacent flow passages). In addition, the seal 50 extends from the side of the partition wall W toward the first end face 41 of the catalyst carrier 40. Moreover, a portion of the main surface 51 of the seal 50 including the front end E2 is in contact with the first end face 41 of the catalyst carrier 40. The area of ​​the region in contact with the catalyst carrier 40 in the main surface 51 of the seal 50 is greater than 1 / 10 relative to the area of ​​the main surface 51 of the seal 50 as a whole. In addition, between the first flow passage 21 and the third flow passage 23, the front end E2 of the seal 50 faces the first flow passage 21 side.

[0055] In more detail, when the shortest distance between the base end E1 and the catalyst carrier 40 is set to the gap dimension GD, the gap dimension GD is greater than 1 mm and less than 15 mm. Preferably, the gap dimension GD is greater than 1 mm and less than 5 mm. In contrast, the length dimension L of the seal 50 is greater than 5 mm and less than 25 mm. Preferably, the length dimension L of the seal 50 is greater than 15 mm and less than 20 mm. That is, the length dimension L of the seal 50 is greater than 1.3 times the gap dimension GD. More preferably, the length dimension L of the seal 50 is greater than 3 times the gap dimension GD. In addition, the so-called length dimension L of the seal 50 is the shortest dimension from the base end E1 to the front end E2 on the surface of the seal 50. The base end E1 is the end edge of the seal 50 that is connected to each frame. The front end E2 is the end edge of the seal 50 on the opposite side of the base end E1.

[0056] like Figure 4As shown, a portion of the plurality of seals 50 including the front end E2 contacts and overlaps each other in the direction toward which the opening of the first frame 20 faces (i.e., in the direction along the central axis CA). Specifically, first, a specific seal 50 among the plurality of seals 50 that is not connected to the catalyst carrier 40 via other seals 50 is set as the first seal 50A. The seal 50 that contacts and overlaps with the surface of the first seal 50A on the opposite side of the catalyst carrier 40 is set as the second seal 50B. The seal 50 that overlaps on the surface opposite to the surface of the second seal 50B that contacts the first seal 50A is set as the third seal 50C. The first seal 50A, the second seal 50B and the third seal 50C are arranged in a circumferential direction centered on the central axis CA. A plurality of the first seals 50A are arranged at intervals in a radial direction perpendicular to the central axis CA. Similarly, the second seal 50B and the third seal 50C are also arranged in plurality at intervals in the radial direction perpendicular to the central axis CA. The position of the base end E1 of the first seal 50A and the position of the base end E1 of the third seal 50C are substantially the same in the radial direction perpendicular to the central axis CA of the catalyst device 10. Moreover, in the radial direction perpendicular to the central axis CA, the second seal 50B is located between adjacent first seals 50A. Moreover, both sides of the second seal 50B in the radial direction perpendicular to the central axis CA overlap with the first seal 50A and the third seal 50C. That is, as a whole, the seal 50 has a two-layer structure of the first seal 50A and the third seal 50C and a three-layer structure of the first seal 50A, the second seal 50B and the third seal 50C.

[0057] In addition, the direction parallel to the line segment connecting the base end E1 to the front end E2 at the shortest distance on the surface of the seal 50 is defined as the longitudinal direction. Figure 5 As shown, when viewed in section along the opening direction of the first frame body 20 , the dimension OL of the portion where the first seal 50A and the second seal 50B contact and overlap each other in the longitudinal direction is 4 mm or more.

[0058] The shortest distance LB between the base ends E1 of the plurality of seals 50 is greater than 0.5 mm and less than 3.5 mm. Preferably, the shortest distance LB between the base ends E1 of the plurality of seals 50 is greater than 1.0 mm and less than 1.5 mm. In more detail, the shortest distance LB between the base end E1 of the first seal 50A and the base end E1 of the second seal 50B is greater than the shortest distance LB between the base end E1 of the second seal 50B and the base end E1 of the third seal 50C. Moreover, the shortest distance LB between the base end E1 of the first seal 50A and the base end E1 of the second seal 50B is 1.5 mm. The shortest distance LB between the base end E1 of the second seal 50B and the base end E1 of the third seal 50C is 1 mm.

[0059] In addition, although not shown in the figure, the seal 50 is also installed on the surface of the second frame body 30 facing the negative direction ND. Specifically, the seal 50 is also installed on the outer periphery of the opening edge of the fifth circulation passage and the outer periphery of the opening edge of the sixth circulation passage. Hereinafter, the description and illustration of the seal 50 installed on the second frame body 30 are omitted, but they are the same structure as the seal 50 installed on the first frame body 20.

[0060] <About the results of the comparative test>

[0061] As shown in the following Tables 1 to 7, a comparative test of sealing performance was conducted on the structures related to the seal 50 described in the above embodiment. The so-called structures related to the seal 50 here are the thickness dimension T of the seal 50, the length dimension L of the seal 50, the gap dimension GD, the number of seals 50 overlapping each other, the shortest distance LB between the base ends E1, the dimension OL of the overlapping portion of the seals 50, and the interval between the base ends E1 of the seals 50 overlapping three or more.

[0062] Specifically, use Figure 6The test device 100 shown in the figure carried out a comparative test of sealing performance. The test device 100 has a container 101, a wall portion 102, a seal 50, an inflow path 103, and a differential pressure gauge 104. The container 101 is a rectangular box. The wall portion 102 is located approximately in the center of the container 101. There is a gap between the wall portion 102 and the inner surface of the container 101. The seal 50 is connected to the wall portion 102 and blocks the gap. That is, the wall portion 102 and the seal 50 divide the space inside the container 101 into two. One of the two spaces is set as the first space 105, and the other space is set as the second space 106. The first space 105 is connected to the outside of the container 101. In addition, the inflow path 103 is tubular. The inflow path 103 passes through the surface of the outer surface of the container 101 that divides the second space 106. Air is sent from the inflow path 103 to the second space 106. The differential pressure gauge 104 measures the difference between the pressure of the first space 105 and the pressure of the second space 106. Here, since the first space 105 is connected to the outside of the container 101, the air pressure of the first space 105 is substantially the atmospheric pressure. In addition, the second space 106 is surrounded by the container 101, the seal 50, and the wall 102. Therefore, even if the sealing performance of the seal 50 is higher and the pressure of the second space 106 is higher, the air in the second space 106 will not leak into the first space 105. That is, the higher the sealing performance of the seal 50, the larger the value of the differential pressure measured by the differential pressure gauge 104.

[0063] In addition, the shortest distance of the gap between the wall portion 102 and the inner surface of the container 101 corresponds to the gap dimension GD in the above-mentioned embodiment. Hereinafter, the shortest distance of the test device 100 is also referred to as the "gap dimension GD". In addition, when the seal 50 is mounted on the wall portion 102, the number of seals 50 that are in contact with each other and overlapped in the direction in which the opening of the gap faces corresponds to the number of seals 50 that are in contact with each other and overlapped in the direction in which the opening of each frame faces in the above-mentioned embodiment.

[0064] In the "Evaluation" column in Tables 1 to 7, "×" indicates that the differential pressure is less than 100 Pa. "△" indicates that the differential pressure is 100 Pa or more and less than 1000 Pa. "○" indicates that the differential pressure is 1000 Pa or more and less than 4000 Pa. "◎" indicates that the differential pressure is 4000 Pa or more.

[0065] Hereinafter, the structures of Comparative Examples 1 to 3 and the structures of Examples 1 to 22 will be described. In addition, the sealing members of the comparative examples and the sealing member 50 of the example will be collectively referred to as simply "seal member 50" below.

[0066] [Table 1]

[0067]

[0068] The structures of Examples 1 to 4 are the structures described in the above-mentioned embodiments. In each example, the thickness dimension T of the seal 50 is different from each other. Specifically, in the structure of Example 1, the thickness dimension T of the seal 50 is 0.125 mm. In the structure of Example 2, the thickness dimension T of the seal 50 is 0.17 mm. In the structure of Example 3, the thickness dimension T of the seal 50 is 0.24 mm. In the structure of Example 4, the thickness dimension T of the seal 50 is 0.35 mm.

[0069] use Figure 6 The test device 100 shown in the figure conducted a comparative test of the sealing performance of the structures of Examples 1 to 4. The results of the comparative test of the sealing performance were that in the structure of Example 1, the differential pressure was 130Pa. In the structure of Example 2, the differential pressure was 680Pa. In the structure of Example 3, the differential pressure was 2000Pa. In the structure of Example 4, the differential pressure was 1600Pa.

[0070] These test results show that the thickness dimension T of the seal 50 needs to be at least 0.1 mm. It is also known that the thickness dimension T of the seal 50 is preferably 0.2 mm or more and 0.3 mm or less.

[0071] [Table 2]

[0072]

[0073] The structure of Comparative Example 1 is the same as the structure described in the above-mentioned embodiment except for the relationship between the gap dimension GD and the length dimension L of the seal 50. Specifically, in the structure of Comparative Example 1, the length dimension L of the seal 50 is 5 mm. In the structure of Comparative Example 1, the gap dimension GD is 5 mm. Therefore, in the case of Comparative Example 1, the length dimension L of the seal 50 is less than the gap dimension GD, so the seals 50 do not contact each other and overlap each other.

[0074] The structures of Examples 5 to 7 are the structures described in the above-mentioned embodiments. In each example, the length dimension L is different from each other. Specifically, in the structure of Example 5, the length dimension L of the seal 50 is 10 mm. In the structure of Example 6, the length dimension L of the seal 50 is 15 mm. In the structure of Example 7, the length dimension L of the seal 50 is 20 mm. In addition, in the structures of Examples 5 to 7, the gap dimension GD is 5 mm.

[0075] A comparative test of sealing performance was conducted on the structure of Comparative Example 1 and the structures of Examples 5 to 7. The result of the comparative test of sealing performance was that the differential pressure was 2100Pa in the structure of Comparative Example 1. However, the reason why the detected differential pressure was relatively high is presumably because the gap dimension GD was sufficiently small. In the structure of Example 5, the differential pressure was 3100Pa. In the structure of Example 6, the differential pressure was 4000Pa. In the structure of Example 7, the differential pressure was 4000Pa.

[0076] These test results show that the larger the length dimension L is relative to the gap dimension GD, the higher the sealing performance is. Specifically, it is known that the length dimension L of the seal 50 is preferably 15 mm or more.

[0077] [Table 3]

[0078]

[0079] The structure of Comparative Example 2 is the same as the structure described in the above-mentioned embodiment except for the relationship between the gap dimension GD and the length dimension L of the seal 50. Specifically, in the structure of Comparative Example 2, the gap dimension GD is 20 mm. In addition, in the structure of Comparative Example 2, the length dimension L of the seal 50 is 20 mm. Therefore, in the case of Comparative Example 2, the length dimension L of the seal 50 is less than the gap dimension GD, so the seals 50 do not contact each other and overlap each other.

[0080] The structures of Examples 8 to 10 are the structures described in the above-mentioned embodiments. However, in each example, the gap dimension GD is different from each other. Specifically, the gap dimension GD of Example 8 is 15 mm. The gap dimension GD of Example 9 is 10 mm. The gap dimension GD of Example 10 is 5 mm. In addition, in the structures of Examples 8 to 10, the length dimension L of the seal 50 is 20 mm.

[0081] The sealing performance comparison test was conducted on the structure of Comparative Example 2 and the structures of Examples 8 to 10. The results of the sealing performance comparison test showed that in the structure of Comparative Example 2, the differential pressure was less than 100 Pa, and the specific value could not be confirmed. In the structure of Example 8, the differential pressure was 1500 Pa. In the structure of Example 9, the differential pressure was 2500 Pa. In the structure of Example 10, the differential pressure was 3000 Pa.

[0082] These test results show that the smaller the gap size GD is, the higher the sealing performance is. Specifically, it is known that the gap size GD is more preferably 5 mm or less.

[0083] [Table 4]

[0084]

[0085] The structure of Comparative Example 3 is the same as the structure described in the above-mentioned embodiment. However, when installed on the wall portion 102, the number of seals 50 overlapped in the direction of the opening of the gap is different from the above-mentioned embodiment. Specifically, in the structure of Comparative Example 3, there is one seal 50, so the seals 50 do not overlap each other. However, in the structure of Comparative Example 3, the width of the seal 50 and the width of the gap dimension GD are approximately the same. That is, in a state where air is not allowed to flow in from the inflow path 103, no gap is generated between the seal 50 and the inner surface of the container 101.

[0086] The structures of Examples 11 to 14 are the structures described in the above-mentioned embodiments. However, in each example, when installed on the wall portion 102, the number of seals 50 overlapped in the direction of the opening of the gap is different. In Example 11, the number of seals 50 is 2. In Example 12, the number of seals 50 is 3. In Example 13, the number of seals 50 is 5. In Example 14, the number of seals 50 is 7.

[0087] A comparative test of sealing performance was conducted on the structure of Comparative Example 3 and the structures of Examples 11 to 14. The result of the comparative test of sealing performance was that in the structure of Comparative Example 3, the differential pressure was 2200Pa. However, the reason why the detected differential pressure was relatively high is presumably because, as described above, in the case of Comparative Example 3, the width of the seal 50 and the width of the gap dimension GD were roughly the same. In the structure of Example 11, the differential pressure was 4800Pa. In the structure of Example 12, the differential pressure was 4000Pa. In the structure of Example 13, the differential pressure was 3000Pa. In the structure of Example 14, the differential pressure was 3600Pa.

[0088] According to these test results, in the above embodiment, the number of seals 50 overlapping in the direction of the through hole opening is preferably 2 or more. In addition, it is known that the number of seals 50 overlapping in the direction of the through hole opening is more preferably 2 or 3.

[0089] [Table 5]

[0090]

[0091] The structures of Examples 15 to 19 are the structures described in the above-mentioned embodiments. However, in each example, the shortest distances LB between the base ends E1 of the seal 50 are different from each other. Specifically, in the structure of Example 15, the shortest distance LB of the base end E1 is 0.5 mm. In the structure of Example 16, the shortest distance LB of the base end E1 is 1 mm. In the structure of Example 17, the shortest distance LB of the base end E1 is 1.5 mm. In the structure of Example 18, the shortest distance LB of the base end E1 is 2.5 mm. In the structure of Example 19, the shortest distance LB of the base end E1 is 3.5 mm.

[0092] The sealing performance comparison test was conducted on the structures of Examples 15 to 19. The results of the sealing performance comparison test were that in the structure of Example 15, the differential pressure was 2500Pa. In the structure of Example 16, the differential pressure was 4700Pa. In the structure of Example 17, the differential pressure was 4000Pa. In the structure of Example 18, the differential pressure was 3900Pa. In the structure of Example 19, the differential pressure was 3200Pa.

[0093] These test results show that the shortest distance LB between the base ends E1 of the seal 50 is preferably 0.5 mm or more and 3.5 mm or less. It is more preferably greater than 0.5 mm and less than 2.5 mm.

[0094] [Table 6]

[0095]

[0096] The structures of Example 20 and Example 21 are the structures described in the above-mentioned embodiment. However, in each embodiment, the size OL of the contacting and overlapping portions of the two overlapping seals 50 is different from each other. Specifically, in the structure of Example 20, the size OL of the overlapping portion is 2 mm. In the structure of Example 21, the size OL of the overlapping portion is 4 mm.

[0097] A comparative test of sealing performance was conducted on the structures of Example 20 and Example 21. As a result of the comparative test of sealing performance, the differential pressure was 3000 Pa in the structure of Example 20 and 4700 Pa in the structure of Example 21.

[0098] From these test results, it is known that the dimension OL of the overlap between the seals 50 is preferably 2 mm or more. It is known that the dimension OL of the overlap between the seals 50 is more preferably 4 mm or more.

[0099] [Table 7]

[0100]

[0101] The structure of Example 22 is the same as that described in the above embodiment. However, in the structure of Example 22, the shortest distance LB between the base end E1 of the first seal 50A and the base end E1 of the second seal 50B is 1.5 mm. The shortest distance LB between the base end E1 of the second seal 50B and the base end E1 of the third seal 50C is 1 mm.

[0102] A comparative test of sealing performance was conducted on the structure of Example 22. As a result of the comparative test of sealing performance, in the structure of Example 22, the differential pressure was 4700 Pa. Therefore, it can be seen that the shortest distance LB between the base end E1 of the first seal 50A and the base end E1 of the second seal 50B is preferably greater than the shortest distance LB between the base end E1 of the second seal 50B and the base end E1 of the third seal 50C.

[0103] (Effects of the present embodiment)

[0104] (1) In the above-mentioned embodiment, the length dimension L of the plurality of seals 50 is larger than the gap dimension GD. Since the length dimension L is larger than the gap dimension GD, the seal 50 is bent so that a portion of the surface including the front end E2 contacts the catalyst carrier 40. Moreover, the plurality of seals 50 contact and overlap each other in the opening direction of each flow passage. Thus, even if the pressure of the gas increases, a force pressing the end surface of the catalyst carrier 40 will be applied due to the overlap of the plurality of seals 50. Therefore, it is easy to suppress the gas from leaking out from the gap between the seal 50 and the catalyst carrier 40.

[0105] (2) In the above embodiment, the plurality of seals 50 extend from the partition wall W, and the front ends E2 are in contact with the end surfaces of the catalyst carrier 40. This can suppress the intrusion of gas from one flow passage partitioned by the frame into another flow passage.

[0106] In addition, the front end E2 of the seal 50 extending from the partition wall W between the first circulation passage 21 and the third circulation passage 23 is oriented toward the first circulation passage 21. According to the above test results, as long as this relationship exists, even if the pressure of the hot air passing through the third circulation passage 23 becomes slightly higher, it is possible to suppress the hot air from invading one side of the portion of the catalyst carrier 40 covering the first circulation passage 21. That is, in the portion of the catalyst carrier 40 covering the first circulation passage 21, it is possible to suppress the organic solvent adsorbed on the catalyst from directly detaching.

[0107] (3) In the above embodiment, the area of ​​the region in contact with the catalyst carrier 40 on the main surface 51 of the seal 50 is 1 / 10 of the area of ​​the entire main surface 51 of the seal 50. According to the above test results, as long as the ratio is in contact with the catalyst carrier 40, higher airtightness can be obtained.

[0108] (4) In the above embodiment, the length dimension L of the seal 50 is 1.3 times or more of the gap dimension GD. Preferably, the length dimension L of the seal 50 is 3 times or more of the gap dimension GD. According to the above test results, by making the length dimension L of the seal 50 sufficiently larger than the gap dimension GD, airtightness can be more significantly obtained.

[0109] (6) In the above embodiment, the second seal 50B overlaps the first seal 50A. The dimension OL of the portion where the first seal 50A and the second seal 50B contact is 4 mm or more. As shown in the test results, by making the plurality of seals 50 contact and overlap, a force pressing the catalyst carrier 40 is generated. Therefore, it is easy to more significantly prevent gas from leaking from the flow passage.

[0110] (7) In the above embodiment, the material of the seal 50 is conductive silicone. Conductive silicone has relatively high flexibility. In addition, conductive silicone is not easy to generate static electricity, so the possibility of igniting the organic solvent can be reduced. Furthermore, the heat resistance temperature of conductive silicone can be increased depending on the composition. Therefore, conductive silicone is suitable as the material of the seal 50 used in the catalyst device 10 for removing organic solvents.

[0111] (8) In the above embodiment, the first seal 50A, the second seal 50B and the third seal 50C overlap in sequence from the catalyst carrier 40 side. Moreover, the shortest distance LB between the base end E1 of the first seal 50A and the base end E1 of the second seal 50B is greater than the shortest distance LB between the base end E1 of the third seal 50C and the base end E1 of the second seal 50B. Assume that the pressure of the gas in the flow passage on the side where the first seal 50A is located is set to be smaller than the pressure of the gas in the flow passage on the side where the third seal 50C is located. If it is such a gas pressure relationship, the airtightness of each flow path can be further improved as shown in the above test results. In addition, the third seal 50C and the second seal 50B located on the side with low pressure are densely packed, so the movable range tends to become smaller. In addition, the area where these seals 50 contact each other tends to become larger. It is considered that, as a result, the force pressing the first seal 50A located on the side with higher pressure toward the catalyst carrier 40 becomes stronger, and the airtightness is improved.

[0112] (9) In the above embodiment, the shortest distance LB between the base ends E1 of the seal members 50 is preferably 1.0 mm or more and 1.5 mm or less. According to test results, within this numerical range, the seal members 50 are densely packed, thereby achieving more significant airtightness.

[0113] (10) In the above embodiment, the gap dimension GD is preferably 1 mm or more and 5 mm or less. In addition to the overlap of the seal 50, the gap between the opening of each through hole and the catalyst carrier 40 is narrow, thereby more significantly suppressing gas leakage from the gap.

[0114] (11) In the above embodiment, the thickness dimension T of the seal 50 is preferably greater than 0.2 mm and less than 0.3 mm. According to the test results, as long as it is within this numerical range, the airtightness can be further improved. In addition, if the thickness dimension T of the seal 50 is less than 0.2 mm, the rigidity of the seal 50 becomes relatively small, so the seal 50 is easy to flutter due to the wind pressure of the air. If the thickness dimension T of the seal 50 is greater than 0.3 mm, the number of seals 50 that can be installed in the frame may decrease, or the area in which multiple seals 50 contact each other may become smaller. Therefore, with respect to the thickness dimension T of the seal 50, the thickness dimension within the above numerical range is appropriate.

[0115] <Change example>

[0116] The above-described embodiment and the following modified examples can be implemented in combination with each other within the scope of no technical contradiction.

[0117] The shape of the catalyst device 10 is not limited to the example of the above-mentioned embodiment. In addition, the shapes of the first frame 20 , the second frame 30 , and the catalyst carrier 40 can also be appropriately changed in accordance with the shape of the catalyst device 10 .

[0118] The type of catalyst included in the catalyst carrier 40 is not limited to the example in the above embodiment. That is, the adsorbed substance is not limited to the organic solvent. For example, in order to use the catalyst carrier 40 as a deodorizing filter, the type of catalyst may be changed.

[0119] The catalyst carrier 40 is not limited to a catalyst carrier of a honeycomb structure. For example, the catalyst carrier 40 may be a carrier made of a porous material such as a sponge. However, at least a portion of the pores of the catalyst carrier 40 need to be continuous pores extending from the first end face 41 of the catalyst carrier 40 to the second end face 42.

[0120] The dimensions of the catalyst carrier 40 are not limited to those in the above-described embodiment, but may be appropriately changed according to the purpose and type of the catalyst carrier 40 .

[0121] The first frame body 20 does not need to have a plurality of through holes and partition walls W. For example, even if the first frame body 20 is only a cylinder C, gas leakage can be suppressed by attaching a plurality of seals 50 to the outer periphery of the opening edge of the cylinder.

[0122] ·The dimensions of the seal 50 are not limited to the examples of the above-mentioned embodiments. In addition, the dimensions of the seal 50 are not limited to the dimensions tested in the comparative tests. Specifically, the length dimension L of the seal 50 only needs to be longer than the gap dimension GD, and may be less than 1.3 times the gap dimension GD, or less than 3 times the gap dimension GD. The thickness dimension T of the seal 50 may be less than 0.1 mm, or greater than 0.4 mm. The dimensions of the seal 50 may be appropriately changed according to the size of the catalyst device 10, etc. Even in this case, as long as a portion of the front end E2 of the plurality of seals 50 is in contact with the end face of the catalyst carrier 40 and the plurality of seals 50 are in contact with each other and overlap with each other, at least the effect described in (1) can be obtained.

[0123] It is also possible that the area of ​​the region in contact with the catalyst carrier 40 in the main surface 51 of the seal 50 is less than 1 / 10 of the area of ​​the entire main surface 51 of the seal 50. For example, when the shape of the front end E2 of the seal 50 is an arc, the above value can be less than 1 / 10. In addition, even in such a case, at least the effect described in (1) can be obtained, and by increasing the number of overlapping seals 50, it is expected that this effect will be improved.

[0124] The shortest distance LB between the base ends E1 of the plurality of seal members 50 may be less than 1.0 mm or may be greater than 1.5 mm.

[0125] The material of the seal 50 may not be silicone and may not be conductive. The material of the seal 50 may be, for example, stainless steel.

[0126] The size of the portion where the first seal 50A and the second seal 50B are in contact may be less than 4 mm. Even in this case, at least the effect described in (1) can be obtained.

[0127] The shortest distance LB between the base end E1 of the first seal 50A and the base end E1 of the second seal 50B may be equal to or less than the shortest distance LB between the base end E1 of the second seal 50B and the base end E1 of the third seal 50C. In this case, at least the effect described in (1) can be obtained.

[0128] The gap dimension GD may be less than 1 mm or may be greater than 5 mm, and may be appropriately changed according to the relationship with the length dimension L of the seal 50 .

[0129] <Notes>

[0130] The following describes technical ideas derived from the above-mentioned embodiment and modified examples. [1]

[0132] A catalyst device comprising:

[0133] A columnar catalyst carrier that carries a catalyst capable of adsorbing a specific substance;

[0134] a frame having a through hole; and

[0135] The plate-shaped sealing member is mounted on the frame and has flexibility.

[0136] The frame is mounted on the catalyst carrier so that the opening edge of the through hole faces the end surface of the catalyst carrier with a gap therebetween.

[0137] When the end edge of the seal member opposite to the base end connected to the frame is set as the front end,

[0138] A portion of the main surface of the seal including the front end is in contact with the catalyst carrier,

[0139] Parts of the plurality of seal members including the front ends are in contact with and overlap with each other in the direction in which the opening of the through hole faces. [2]

[0141] The catalyst device according to [1], wherein

[0142] The frame body has a plurality of the through holes and a partition wall separating two adjacent through holes.

[0143] The plurality of seal members extend from the partition wall side, and the front ends thereof are in contact with the end surface of the catalyst carrier. [3]

[0145] The catalyst device according to [1] or [2], wherein:

[0146] An area of ​​a region of the main surface of the sealing material that is in contact with the catalyst carrier is 1 / 10 or more of an area of ​​the entire main surface of the sealing material. [4]

[0148] The catalyst device according to any one of [1] to [3], wherein

[0149] The shortest dimension from the base end to the front end on the surface of the seal is defined as the length dimension, and the shortest distance between the base end and the catalyst carrier is defined as the gap dimension.

[0150] The length dimension of the sealing member is greater than 1.3 times the gap dimension. [5]

[0152] The catalyst device according to [4], wherein:

[0153] The length dimension of the sealing member is more than three times the gap dimension. [6]

[0155] The catalyst device according to any one of [1] to [5], wherein

[0156] A specific seal among the plurality of seals is set as a first seal, a seal that contacts and overlaps with a surface of the first seal on the opposite side to the catalyst carrier is set as a second seal, and a direction parallel to a line segment on the surface of the seal that connects the base end to the front end at the shortest distance is set as a length direction, in this case,

[0157] A dimension of a portion of the first sealing member in the longitudinal direction where the first sealing member and the second sealing member are in contact is 4 mm or more. [7]

[0159] The catalyst device according to any one of [1] to [6], wherein:

[0160] The sealing member is made of silicone and has electrical conductivity. [8]

[0162] The catalyst device according to any one of [1] to [7], wherein

[0163] The specific sealing member among the plurality of sealing members is set as a first sealing member, the sealing member contacting and overlapping with the surface of the first sealing member opposite to the main surface is set as a second sealing member, and the sealing member contacting and overlapping with the surface of the second sealing member opposite to the surface contacting the first sealing member is set as a third sealing member, in which case,

[0164] The shortest distance between the base end of the first seal and the base end of the second seal is greater than the shortest distance between the base end of the second seal and the base end of the third seal. [9]

[0166] The catalyst device according to any one of [1] to [8], wherein

[0167] The shortest distance between the base ends of the plurality of seals is greater than or equal to 1.0 mm and less than or equal to 1.5 mm.

[10]

[0169] The catalyst device according to any one of [1] to [9], wherein

[0170] The shortest distance between the opening edge of the through hole and the catalyst carrier is 1 mm or more and 5 mm or less.

[11]

[0172] The catalyst device according to any one of [1] to

[10] , wherein

[0173] The sealing member has a thickness of not less than 0.2 mm and not more than 0.3 mm.

Claims

1. A catalyst device comprising: A columnar catalyst carrier that carries a catalyst capable of adsorbing a specific substance; a frame having a through hole; and The plate-shaped sealing member is mounted on the frame and has flexibility. The frame is mounted on the catalyst carrier so that the opening edge of the through hole faces the end surface of the catalyst carrier with a gap therebetween. When the end edge of the seal member opposite to the base end connected to the frame is set as the front end, A portion of the main surface of the seal including the front end is in contact with the catalyst carrier, Parts of the plurality of seal members including the front ends are in contact with and overlap with each other in the direction in which the opening of the through hole faces.

2. The catalyst device according to claim 1, wherein: The frame body has a plurality of the through holes and a partition wall separating two adjacent through holes. The plurality of seal members extend from the partition wall side, and the front ends thereof are in contact with the end surface of the catalyst carrier.

3. The catalyst device according to claim 1 or 2, wherein: An area of ​​a region of the main surface of the sealing material that is in contact with the catalyst carrier is 1 / 10 or more of an area of ​​the entire main surface of the sealing material.

4. The catalyst device according to any one of claims 1 to 3, wherein: The shortest dimension from the base end to the front end on the surface of the seal is defined as the length dimension, and the shortest distance between the base end and the catalyst carrier is defined as the gap dimension. The length dimension of the sealing member is greater than 1.3 times the gap dimension.

5. The catalyst device according to claim 4, wherein: The length dimension of the sealing member is more than three times the gap dimension.

6. The catalyst device according to any one of claims 1 to 5, wherein: A specific seal among the plurality of seals is set as a first seal, a seal that contacts and overlaps with a surface of the first seal on the opposite side to the catalyst carrier is set as a second seal, and a direction parallel to a line segment on the surface of the seal that connects the base end to the front end at the shortest distance is set as a length direction, in this case, A dimension of a portion of the first sealing member in the longitudinal direction where the first sealing member and the second sealing member are in contact is 4 mm or more.

7. The catalyst device according to any one of claims 1 to 6, wherein: The sealing member is made of silicone and has electrical conductivity.

8. The catalyst device according to any one of claims 1 to 7, wherein: The specific sealing member among the plurality of sealing members is set as a first sealing member, the sealing member contacting and overlapping with the surface of the first sealing member opposite to the main surface is set as a second sealing member, and the sealing member contacting and overlapping with the surface of the second sealing member opposite to the surface contacting the first sealing member is set as a third sealing member, in which case, The shortest distance between the base end of the first seal and the base end of the second seal is greater than the shortest distance between the base end of the second seal and the base end of the third seal.

9. The catalyst device according to any one of claims 1 to 8, wherein: The shortest distance between the base ends of the plurality of seals is greater than or equal to 1.0 mm and less than or equal to 1.5 mm.

10. The catalyst device according to any one of claims 1 to 9, wherein: The shortest distance between the opening edge of the through hole and the catalyst carrier is 1 mm or more and 5 mm or less.

11. The catalyst device according to any one of claims 1 to 10, wherein: The sealing member has a thickness of not less than 0.2 mm and not more than 0.3 mm.

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