Catalyst device

Abstract

To solve the problem that gas easily leaks from a gap between a frame and a catalyst carrier.SOLUTION: A catalyst device 10 comprises a catalyst carrier 40, a first frame 20, and sealants 50. The catalyst carrier 40 carries a catalyst that can adsorb a specific substance. The first frame 20 has an open hole. The sealants 50 have a tabular shape with flexibility, and are fitted to the first frame 20. The first frame 20 is fitted to the catalyst carrier 40, so that an opening edge of the open hole faces a first edge face 41 of the catalyst carrier 40 at an interval. A portion containing a tip E2 out of a main face 51 of the sealants 50 contacts the catalyst carrier 40. The plurality of sealants 50 are mutually superposed while contacting each other in a direction in which an opening of the open hole is directed.SELECTED DRAWING: Figure 5

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 supports a catalyst. The catalyst carrier is substantially 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 substantially planar. Each gap extends from the first end face toward the second end face. The housing has a through hole. That is, the housing has a first opening and a second opening as ends 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. Thus, 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. When the air passes through the catalyst carrier, a specific adsorbed substance contained in the air is adsorbed by the catalyst.

[0003] Furthermore, the catalyst device disclosed in Patent Document 1 includes a frame. The frame is attached to the surface of the outer surface of the housing that has the first opening. The frame is plate-shaped with a through hole. The through hole of the frame is partitioned into a plurality of regions. A part of the frame covers the first opening. Thus, the frame partitions the first opening into a plurality of regions. The frame also includes a sealing material. The sealing material has elasticity. The sealing material is located between the frame and the first end face of the catalyst carrier and at the boundary portions of the plurality of regions. The shape of the sealing material is semi-cylindrical. When viewed in cross-section in a cross-section orthogonal to the direction in which the sealing material extends, the edge corresponding to the diameter of the semi-circle among the outer edges of the sealing material is connected to the frame. The tip of the edge corresponding to the circumference among the outer edges of the sealing material is in contact with the first end face.

Prior Art Documents

Patent Documents

[0004]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0005] In a catalyst device as disclosed in Patent Document 1, a cylindrical air supply pipe is connected to a first opening of a housing. A 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 change. And when the pressure of the gas increases, there is a risk that the sealing material elastically deforms and gas leaks from between the sealing material and the catalyst carrier.

Means for Solving the Problems

[0006] To solve the above problems, the present invention includes a columnar catalyst carrier carrying a catalyst capable of adsorbing a specific substance, a frame having a through hole, and a flexible plate-like sealing material attached to the frame. The frame is attached to the catalyst carrier such that an opening edge of the through hole faces the end face of the catalyst carrier with a gap therebetween. When an edge of the sealing material opposite to a base end connected to the frame is taken as a tip, a part of a main surface of the sealing material including the tip is in contact with the catalyst carrier, and parts of a plurality of the sealing materials including the tips are in contact with and overlap each other in a direction in which the opening of the through hole faces.

Effects of the Invention

[0007] Leakage of gas from between the frame and the catalyst carrier can be suppressed.

Brief Description of the Drawings

[0008]

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

Figure 6

Embodiments for Carrying Out the Invention

[0009] <An Embodiment of the Catalyst Device> Hereinafter, an embodiment of the catalyst device will be described. Note that the drawings may show the components enlarged for easy understanding. The dimensional ratios of the components may be different from the actual ones or those in other drawings.

[0010] (Regarding the Overall Configuration of the Catalyst Device) As shown in FIG. 1, 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 is generally a substantially 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 substantially cylindrical outer shape with substantially the same diameter. Hereinafter, among the directions parallel to the central axis CA, a specific direction is defined as the positive direction PD. Among the directions parallel to the central axis CA, the direction opposite to the positive direction PD is defined as the negative direction ND.

[0011] The first frame 20 includes the end on the negative direction ND side of the catalyst device 10. The first frame 20 is substantially 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 penetrating 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 tube body C and three partition walls W. Each partition wall W extends from the inner surface of the tube body C toward the central axis CA. Each partition wall W is arranged at a predetermined interval in the circumferential direction around the central axis CA. Also, the ends of each partition wall W on the central axis CA side are connected to each other. As a result, the first frame 20 has, as a plurality of through holes, a first flow passage 21, a second flow passage 22, and a third flow passage 23. As shown in FIG. 2, when viewed in the direction along the central axis CA of the first frame 20, each flow passage is substantially fan-shaped. The first flow passage 21 is the through hole with the largest volume of space. The central angle of the fan shape of the first flow passage 21 is larger than 180 degrees. The second flow passage 22 is a through hole adjacent to the first flow passage 21 in the counterclockwise direction when viewed in the negative direction ND. When viewed in the negative direction ND, the third flow passage 23 is a through hole adjacent to the second flow passage 22 in the counterclockwise direction and adjacent to the first flow passage 21 in the clockwise direction. That is, the third flow passage 23 is located between the first flow passage 21 and the second flow passage 22. The central angle of the fan shape of the third flow passage 23 is substantially the same as the central angle of the fan shape of the second flow passage 22.

[0012] As shown in FIG. 1, the second frame 30 includes the end on the positive direction PD side of the catalyst device 10. Although the illustration is omitted, 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 catalyst device 10. The second frame 30 has a plurality of through holes penetrating from the end on the negative direction ND side to the end on the positive direction PD side. Specifically, the second frame 30 has, as a plurality of through holes, a fourth flow passage, a fifth flow passage, and a sixth flow passage.

[0013] The size and shape of the opening on the negative direction ND side of the fourth flow path are the same as the size and shape of the opening on the positive direction PD side of the first flow path 21. The opening of the fourth flow path faces the opening of the first flow path 21 via the catalyst carrier 40. That is, the first flow path 21 and the fourth flow path are arranged in a direction parallel to the central axis CA via the catalyst carrier 40.

[0014] The size and shape of the opening on the negative direction ND side of the fifth flow path are the same as the size and shape of the opening on the positive direction PD side of the second flow path 22. The opening of the fifth flow path faces the opening of the second flow path 22 via the catalyst carrier 40. That is, the second flow path 22 and the fifth flow path are arranged in a direction parallel to the central axis CA via the catalyst carrier 40.

[0015] The size and shape of the opening on the negative direction ND side of the sixth flow path are the same as the size and shape of the opening on the positive direction PD side of the third flow path 23. The opening of the sixth flow path faces the opening of the third flow path 23 via the catalyst carrier 40. That is, the third flow path 23 and the sixth flow path are arranged in a direction parallel to the central axis CA via the catalyst carrier 40.

[0016] The catalyst carrier 40 is a carrier that supports a catalyst capable of adsorbing a specific substance. In the present embodiment, the specific substance is a vaporized organic solvent. As shown in FIG. 1, the outer shape of the catalyst carrier 40 is generally substantially 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 coincides 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.

[0017] Note that the first frame 20 is attached to the catalyst carrier 40 such that the opening edge on the positive direction PD side of the through hole faces the first end face 41 of the catalyst carrier 40 with a gap therebetween. The second frame 30 is attached to the catalyst carrier 40 such that the opening edge on the negative direction ND side of the through hole faces the second end face 42 of the catalyst carrier 40 with a gap therebetween. Although not shown in the figure, a sealing member is interposed between the outer edge of the first end face 41 of the catalyst carrier 40 and the outer edge of the end face on the positive direction PD side of the first frame 20. Similarly, a sealing member (not shown) is interposed between the outer edge of the second end face 42 of the catalyst carrier 40 and the outer edge of the end face on the negative direction ND side of the second frame 30. Therefore, leakage of the gas flowing through the inside of the first frame 20, the catalyst carrier 40, and the second frame 30 to the outside of the catalyst device 10 is prevented. Note that a sealing material 50 different from the above-described sealing member is attached to the opening edges of the through holes of the first frame 20 and the opening edges of the through holes of the second frame 30. Details of this sealing material 50 will be described later.

[0018] Although not shown in the figure, the catalyst carrier 40 is connected to a drive source such as an electric motor via a power transmission mechanism such as a gear mechanism and rollers. Based on the power from the drive source, the catalyst carrier 40 can rotate relative to the first frame 20 and the second frame 30 about the central axis CA at a speed of 5 revolutions per minute or more and 15 revolutions per minute or less. The direction of rotation is clockwise when viewed facing the positive direction PD.

[0019] As shown in FIG. 3, the catalyst carrier 40 has a so-called honeycomb structure. That is, the catalyst carrier 40 has a plurality of gaps G inside. And the plurality of gaps G are connected from the first end face 41 to the second end face 42. Therefore, the air passing through each flow path 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 FIG. 3, the illustration of the portion having the honeycomb structure of the first end face 41 is partially omitted. Further, the honeycomb structure referred to here is not limited to a structure in which a plurality of hexagonal three-dimensional structures are arranged, but includes a structure in which one or a plurality of types of three-dimensional structures are arranged.

[0020] (Regarding the connection relationship with the drying furnace) 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 applied to an electronic component after the coating is applied. At this time, the gas discharged from the drying chamber R of the drying furnace contains vaporized organic solvents and the like.

[0021] Specifically, as shown in FIG. 1, the drying furnace has first ducts D1 to sixth ducts D6. The first duct D1 is connected to the negative direction ND side of the first flow path 21 in the first frame 20. The second duct D2 is connected to the negative direction ND side of the second flow path 22 in the first frame 20. The third duct D3 is connected to the negative direction ND side of the third flow path 23 in the first frame 20. The fourth duct D4 is connected to the positive direction PD side of the fourth flow path in the second frame 30. The fifth duct D5 is connected to the positive direction PD side of the fifth flow path in the second frame 30. The sixth duct D6 is connected to the positive direction PD side of the sixth flow path in the second frame 30.

[0022] In FIG. 1, the connection relationship between each frame and each duct is schematically illustrated. In reality, the first duct D1 is connected to the opening on the negative direction ND side of the first flow path 21 via a lid body, an adapter, a sealing member, etc. Therefore, there is no gap between the first duct D1 and the opening on the negative direction ND side of the first flow path 21. That is, when gas flows from the first duct D1 to the first flow path 21, gas leakage between the two is prevented. In this regard, the connection relationship between other ducts and flow paths is the same. For these connection configurations, known configurations can be appropriately diverted.

[0023] 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 into the first duct D1. The gas blown into 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 via the first flow path 21 from the negative direction ND side of the first duct D1. Then, when the component of the organic solvent contained in the gas passes through the catalyst carrier 40, it is adsorbed by the catalyst. After that, the gas from which the component of the organic solvent has been removed is exhausted to the fourth duct D4 via the fourth flow path of the second frame 30.

[0024] The second blower B2 blows air not containing an organic solvent into 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 through the second flow path 22, the catalyst carrier 40, the fifth flow path, and the fifth duct D5 in this order from the negative direction ND side of the second duct D2. Incidentally, when the above air passes through the gap G of the catalyst carrier 40, it absorbs the heat of the catalyst carrier 40. Therefore, the temperature of the air flowing through the fifth flow path and the fifth duct D5 rises to about 60 degrees.

[0025] Air that has flowed through the fifth duct D5 is supplied to the heater HE. Then, the heater HE heats the supplied gas. As a result, the air becomes hot air at about 200 degrees. This hot air is supplied from the heater HE to the sixth duct D6. Then, the hot air passes through the sixth flow path of the second frame 30 via the sixth duct D6 and then passes through the inside of the catalyst carrier 40. At this time, the portion of the catalyst carrier 40 facing the sixth flow path of the second frame 30 is exposed to the hot air flowing through the sixth flow path. Further, the catalyst carrier 40 is rotating relative to the second frame 30. Therefore, the portion of the catalyst carrier 40 facing the sixth flow path of the second frame 30 is in a state of adsorbing the organic solvent contained in the gas from the first duct D1. Accordingly, the hot air desorbs the organic solvent adsorbed on the catalyst from the catalyst. The hot air containing the desorbed organic solvent is supplied to a predetermined recovery device via the third flow path 23 and the third duct D3. In this way, the catalyst device 10 can concentrate and recover the organic solvent from the gas exhausted from the drying chamber R.

[0026] (Regarding the sealing material) As shown in FIG. 2, the catalyst device 10 includes a plurality of sealing materials 50. The plurality of sealing materials 50 are attached to the surface side facing the positive direction PD of the first frame 20. In the present embodiment, the sealing material 50 is attached along the outer periphery of the opening edge of the second flow path 22 and the outer periphery of the opening edge of the third flow path 23. As shown in FIGS. 4 and 5, the sealing material 50 is bent so that the main surface 51 contacts the catalyst carrier 40. Hereinafter, when referring to the main surface 51 of the sealing material 50, it refers to one of the outermost surfaces of the sealing material 50 having the largest area.

[0027] As shown in FIG. 4, the sealing material 50 is in the shape of a rectangular plate. The material of the sealing material 50 is conductive silicone. Therefore, the sealing material 50 has flexibility. Also, as shown in FIG. 5, the thickness dimension T of the sealing material 50 is 0.1 mm or more and 0.4 mm or less. Preferably, the thickness dimension T of the sealing material 50 is 0.2 mm or more and 0.3 mm or less. As another material, a metallic sealing material 50 may be used, and in particular, one made of SUS is preferable. When the sealing material 50 is metallic, it should be thin enough to have an elastic force.

[0028] A part of the main surface 51 of the sealing material 50 including the tip E2 is in contact with the catalyst carrier 40. Specifically, the sealing material 50 is attached to a partition wall W that separates two adjacent through-holes, that is, two adjacent flow channels. Also, the sealing material 50 extends from the side of the partition wall W toward the first end face 41 of the catalyst carrier 40. And a part of the main surface 51 of the sealing material 50 including the tip E2 is in contact with the first end face 41 of the catalyst carrier 40. The area of the region of the main surface 51 of the sealing material 50 that contacts the catalyst carrier 40 is 1 / 10 or more of the entire area of the main surface 51 of the sealing material 50. Also, between the first flow channel 21 and the third flow channel 23, the tip E2 of the sealing material 50 faces the first flow channel 21 side.

[0029] More specifically, when the shortest distance between the base end E1 and the catalyst carrier 40 is defined as the gap dimension GD, the gap dimension GD is 1 mm or more and 15 mm or less. Preferably, the gap dimension GD is 1 mm or more and 5 mm or less. In contrast, the length dimension L of the sealing material 50 is 5 mm or more and 25 mm or less. Preferably, the length dimension L of the sealing material 50 is 15 mm or more and 20 mm or less. That is, the length dimension L of the sealing material 50 is 1.3 times or more the gap dimension GD. More preferably, the length dimension L of the sealing material 50 is 3 times or more the gap dimension GD. Note that the length dimension L of the sealing material 50 is the shortest dimension from the base end E1 to the tip E2 on the surface of the sealing material 50. The base end E1 is the edge of the sealing material 50 that connects to each frame. The tip E2 is the edge of the sealing material 50 on the side opposite to the base end E1.

[0030] As shown in FIG. 4, a part including the tips E2 of the plurality of sealing members 50 overlaps while being in contact with each other in the direction in which the opening of the first frame 20 faces, that is, the direction along the central axis CA. Specifically, first, among the plurality of sealing members 50, a specific sealing member 50 that is in contact with the catalyst carrier 40 without passing through other sealing members 50 is defined as the first sealing member 50A. A sealing member 50 that contacts and overlaps the surface of the first sealing member 50A on the side opposite to the catalyst carrier 40 is defined as the second sealing member 50B. A sealing member 50 that overlaps the surface of the second sealing member 50B on the side opposite to the surface that contacts the first sealing member 50A is defined as the third sealing member 50C. The first sealing member 50A, the second sealing member 50B, and the third sealing member 50C are arranged in the circumferential direction around the central axis CA. A plurality of first sealing members 50A are arranged at intervals in the radial direction perpendicular to the central axis CA. Similarly, a plurality of first sealing members 50A are arranged at intervals in the radial direction perpendicular to the central axis CA. The position of the base end E1 of the first sealing member 50A and the position of the base end E1 of the third sealing member 50C are substantially the same in the radial direction perpendicular to the central axis CA of the catalyst device 10. And in the radial direction perpendicular to the central axis CA, the second sealing member 50B is located between adjacent first sealing members 50A. And both sides of the second sealing member 50B in the radial direction perpendicular to the central axis CA overlap with the first sealing member 50A and the third sealing member 50C. That is, as a whole, the sealing member 50 has a two-layer structure part of the first sealing member 50A and the third sealing member 50C, and a three-layer structure part of the first sealing member 50A, the second sealing member 50B, and the third sealing member 50C.

[0031] Also, the direction parallel to the line segment connecting the base end E1 to the tip E2 on the surface of the sealing member 50 is defined as the length direction. As shown in FIG. 5, when viewed in cross section along the opening direction of the first frame 20, the dimension OL of the portion where the first sealing member 50A and the second sealing member 50B are in contact and overlap in the length direction of the first sealing member 50A is 4 mm or more.

[0032] The shortest distance LB between the proximal ends E1 of the plurality of sealing members 50 is 0.5 mm or more and 3.5 mm or less. Preferably, the shortest distance LB between the proximal ends E1 of the plurality of sealing members 50 is 1.0 mm or more and 1.5 mm or less. More specifically, the shortest distance LB between the proximal end E1 of the first sealing member 50A and the proximal end E1 of the second sealing member 50B is greater than the shortest distance LB between the proximal end E1 of the second sealing member 50B and the proximal end E1 of the third sealing member 50C. And the shortest distance LB between the proximal end E1 of the first sealing member 50A and the proximal end E1 of the second sealing member 50B is 1.5 mm. The shortest distance LB between the proximal end E1 of the second sealing member 50B and the proximal end E1 of the third sealing member 50C is 1 mm.

[0033] Although illustration is omitted, the sealing member 50 is also attached to the surface facing the negative direction ND of the second frame 30. Specifically, the sealing member 50 is also attached to the outer periphery of the opening edge of the fifth flow path and the outer periphery of the opening edge of the sixth flow path. In the following, the description and illustration of the sealing member 50 attached to the second frame 30 are omitted, but these have the same configuration as the sealing member 50 attached to the first frame 20.

[0034] <Regarding the results of the comparative test> As shown in Tables 1 to 7 below, a comparative test of the sealing performance was conducted on the configuration of the sealing member 50 described in the above embodiment. The configuration of the sealing member 50 referred to here means the thickness dimension T of the sealing member 50, the length dimension L of the sealing member 50, the gap dimension GD, the number of overlapping sealing members 50, the shortest distance LB between the proximal ends E1, the dimension OL of the overlapping portion of the sealing member 50, and the interval between the proximal ends E1 of three or more overlapping sealing members 50.

[0035] Specifically, a comparative test of the sealing performance was conducted using the test apparatus 100 shown in FIG. 6. The test apparatus 100 includes a container 101, a wall portion 102, a sealing material 50, an inflow passage 103, and a differential pressure gauge 104. The container 101 has a rectangular parallelepiped box shape. The wall portion 102 is located substantially at the center inside the container 101. There is a gap between the wall portion 102 and the inner surface of the container 101. The sealing material 50 is connected to the wall portion 102 and closes the gap. That is, the wall portion 102 and the sealing material 50 divide the space inside the container 101 into two. Of these two spaces, one space is defined as the first space 105 and the other space is defined as the second space 106. The first space 105 communicates with the outside of the container 101. The inflow passage 103 has a tubular shape. The inflow passage 103 penetrates the surface of the outer surface of the container 101 that partitions the second space 106. Air is sent from the inflow passage 103 into the second space 106. The differential pressure gauge 104 measures the difference between the pressure in the first space 105 and the pressure in the second space 106. Here, since the first space 105 communicates with the outside of the container 101, the atmospheric pressure in the first space 105 is approximately the atmospheric pressure. And the second space 106 is surrounded by the container 101, the sealing material 50, and the wall portion 102. Therefore, the higher the sealing performance of the sealing material 50, the less the air in the second space 106 leaks into the first space 105 even if the pressure in the second space 106 increases. That is, the higher the sealing performance of the sealing material 50, the larger the value of the differential pressure measured by the differential pressure gauge 104.

[0036] Note that 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 embodiment. Hereinafter, the shortest distance of the test apparatus 100 is also referred to as the "gap dimension GD". Also, when the sealing material 50 is attached to the wall portion 102, the number of sheets of the sealing material 50 that overlap while contacting each other in the direction in which the opening of the gap faces corresponds to the number of sheets of the sealing material 50 that overlap while contacting each other in the direction in which the opening of each frame faces in the above embodiment.

[0037] In addition, 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.

[0038] Hereinafter, the configurations of Comparative Examples 1 to 3 and Examples 1 to 22 will be described. In the following, when collectively referring to the sealing materials of the comparative examples and the sealing material 50 of the examples, it is simply referred to as "sealing material 50".

[0039] [Table 1]

[0040] The configurations of Examples 1 to 4 are those described in the above-described embodiment. In each example, the thickness dimension T of the sealing material 50 is different from each other. Specifically, in the configuration of Example 1, the thickness dimension T of the sealing material 50 is 0.125 mm. In the configuration of Example 2, the thickness dimension T of the sealing material 50 is 0.17 mm. In the configuration of Example 3, the thickness dimension T of the sealing material 50 is 0.24 mm. In the configuration of Example 4, the thickness dimension T of the sealing material 50 is 0.35 mm.

[0041] Regarding the configurations of Examples 1 to 4, a comparative test of the sealing performance was conducted using the test apparatus 100 shown in FIG. 6. As a result of the comparative test of the sealing performance, in the configuration of Example 1, the differential pressure was 130 Pa. In the configuration of Example 2, the differential pressure was 680 Pa. In the configuration of Example 3, the differential pressure was 2000 Pa. In the configuration of Example 4, the differential pressure was 1600 Pa.

[0042] From these test results, it was found that the thickness dimension T of the sealing material 50 needs to be at least 0.1 mm or more. It was found that the thickness dimension T of the sealing material 50 is preferably 0.2 mm or more and 0.3 mm or less.

[0043] [Table 2]

[0044] The configuration of Comparative Example 1 is the same as that described in the above embodiment except for the relationship between the gap dimension GD and the length dimension L of the sealing material 50. Specifically, in the configuration of Comparative Example 1, the length dimension L of the sealing material 50 is 5 mm. In the configuration of Comparative Example 1, the gap dimension GD is 5 mm. Therefore, in the case of Comparative Example 1, since the length dimension L of the sealing material 50 is less than or equal to the gap dimension GD, the sealing materials 50 are in contact with each other but do not overlap.

[0045] The configurations of Examples 5 to 7 are the same as those described in the above embodiment. The length dimensions L of the respective examples are different from each other. Specifically, in the configuration of Example 5, the length dimension L of the sealing material 50 is 10 mm. In the configuration of Example 6, the length dimension L of the sealing material 50 is 15 mm. In the configuration of Example 7, the length dimension L of the sealing material 50 is 20 mm. Note that in the configurations of Examples 5 to 7, the gap dimension GD is 5 mm in all cases.

[0046] Regarding the configuration of Comparative Example 1 and the configurations of Examples 5 to 7, a comparative test of the sealing performance was conducted. As a result of the comparative test of the sealing performance, in the configuration of Comparative Example 1, the differential pressure was 2100 Pa. However, it is presumed that the relatively high detection of the differential pressure is due to the sufficiently small gap dimension GD. In the configuration of Example 5, the differential pressure was 3100 Pa. In the configuration of Example 6, the differential pressure was 4000 Pa. In the configuration of Example 7, the differential pressure was 4000 Pa.

[0047] From these test results, it was found that the larger the length dimension L is with respect to the gap dimension GD, the higher the sealing performance. Specifically, it was found that the length dimension L of the sealing material 50 is preferably 15 mm or more.

[0048]

Table 3

[0049] The configuration of Comparative Example 2 is the same as that described in the above-described embodiment, except for the relationship between the gap dimension GD and the length dimension L of the sealing material 50. Specifically, in the configuration of Comparative Example 2, the gap dimension GD is 20 mm. Also, in the configuration of Comparative Example 2, the length dimension L of the sealing material 50 is 20 mm. Therefore, in the case of Comparative Example 2, since the length dimension L of the sealing material 50 is less than or equal to the gap dimension GD, the respective sealing materials 50 are in contact with each other but do not overlap.

[0050] The configurations of Examples 8 to 10 are the same as those described in the above-described embodiment. However, the gap dimensions GD are different from each other in each example. 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. Also, in the configurations of Examples 8 to 10, the length dimension L of the sealing material 50 is 20 mm in all cases.

[0051] A comparative test of the sealing performance was conducted on the configuration of Comparative Example 2 and the configurations of Examples 8 to 10. As a result of the comparative test of the sealing performance, in the configuration of Comparative Example 2, the differential pressure was less than 100 Pa, and specific numerical values could not be confirmed. In the configuration of Example 8, the differential pressure was 1500 Pa. In the configuration of Example 9, the differential pressure was 2500 Pa. In the configuration of Example 10, the differential pressure was 3000 Pa.

[0052] From these test results, it was found that the smaller the gap dimension GD, the higher the sealing performance. Specifically, it was found that the gap dimension GD is more preferably 5 mm or less.

[0053]

Table 4

[0054] The configuration of Comparative Example 3 is the same as the configuration described in the above embodiment. However, when attached to the wall portion 102, the number of sealing materials 50 overlapping in the direction in which the opening of the gap faces is different from that of the above embodiment. Specifically, in the configuration of Comparative Example 3, since there is one sealing material 50, the sealing materials 50 do not overlap. However, in the configuration of Comparative Example 3, the width of the sealing material 50 is substantially the same as the width of the gap dimension GD. That is, in a state where air is not flowing in from the inflow path 103, no gap is generated between the sealing material 50 and the inner surface of the container 101.

[0055] The configurations of Examples 11 to 14 are the same as the configurations described in the above embodiment. However, in each example, when attached to the wall portion 102, the number of sealing materials 50 overlapping in the direction in which the opening of the gap faces is different from each other. In Example 11, the number of the sealing materials 50 is two. In Example 12, the number of the sealing materials 50 is three. In Example 13, the number of the sealing materials 50 is four. In Example 14, the number of the sealing materials 50 is five.

[0056] A comparative test of the sealing performance was conducted on the configuration of Comparative Example 3 and the configurations of Examples 11 to 14. As a result of the comparative test of the sealing performance, in the configuration of Comparative Example 3, the differential pressure was 2200 Pa. However, it is presumed that the relatively high detection of the differential pressure is due to the fact that in the case of Comparative Example 3 as described above, the width of the sealing material 50 is substantially the same as the width of the gap dimension GD. In the configuration of Example 11, the differential pressure was 4800 Pa. In the configuration of Example 12, the differential pressure was 4000 Pa. In the configuration of Example 13, the differential pressure was 3000 Pa. In the configuration of Example 14, the differential pressure was 3600 Pa.

[0057] From these test results, it was found that in the above embodiment, it is preferable that the number of the sealing materials 50 overlapping in the direction in which the opening of the through hole faces is two or more. Also, it was found that the number of the sealing materials 50 overlapping in the direction in which the opening of the through hole faces is more preferably two or three.

[0058]

Table 5

[0059] The configurations of Examples 15 to 19 are the same as those described in the above embodiments. However, in each example, the shortest distance LB between the proximal ends E1 of the sealing material 50 is different from each other. Specifically, in the configuration of Example 15, the shortest distance LB of the proximal end E1 is 0.5 mm. In the configuration of Example 16, the shortest distance LB of the proximal end E1 is 1 mm. In the configuration of Example 17, the shortest distance LB of the proximal end E1 is 1.5 mm. In the configuration of Example 18, the shortest distance LB of the proximal end E1 is 2.5 mm. In the configuration of Example 19, the shortest distance LB of the proximal end E1 is 3.5 mm.

[0060] A comparative test of the sealing performance was conducted on the configurations of Examples 15 to 19. As a result of the comparative test of the sealing performance, in the configuration of Example 15, the differential pressure was 2500 Pa. In the configuration of Example 16, the differential pressure was 4700 Pa. In the configuration of Example 17, the differential pressure was 4000 Pa. In the configuration of Example 18, the differential pressure was 3900 Pa. In the configuration of Example 19, the differential pressure was 3200 Pa.

[0061] From these test results, it was found that the shortest distance LB between the proximal ends E1 of the sealing material 50 is preferably 0.5 mm or more and 3.5 mm or less. It was found that the shortest distance LB between the proximal ends E1 of the sealing material 50 is more preferably greater than 0.5 mm and less than 2.5 mm.

[0062]

Table 6

[0063] The configurations of Examples 20 and 21 are the same as those described in the above embodiments. However, in each example, for the two overlapping sealing materials 50, the dimension OL of the contacting and overlapping portion is different from each other. Specifically, in the configuration of Example 20, the dimension OL of the overlapping portion is 2 mm. In the configuration of Example 21, the dimension OL of the overlapping portion is 4 mm.

[0064] A comparative test on the sealing performance was conducted for the configurations of Example 20 and Example 21. As a result of the comparative test on the sealing performance, in the configuration of Example 20, the differential pressure was 3000 Pa. In the configuration of Example 21, the differential pressure was 4700 Pa.

[0065] From these test results, it was found that the overlapping dimension OL of the sealing material 50 is preferably 2 mm or more. It was found that the overlapping dimension OL of the sealing material 50 is more preferably 4 mm or more.

[0066]

Table 7

[0067] The configuration of Example 22 is the configuration described in the above embodiment. However, in the configuration of Example 22, the shortest distance LB between the proximal end E1 of the first sealing material 50A and the proximal end E1 of the second sealing material 50B is 1.5 mm. The shortest distance LB between the proximal end E1 of the second sealing material 50B and the proximal end E1 of the third sealing material 50C is 1 mm.

[0068] A comparative test on the sealing performance was conducted for the configuration of Example 22. As a result of the comparative test on the sealing performance, in the configuration of Example 22, the differential pressure was 4700 Pa. Therefore, it was found that the shortest distance LB between the proximal end E1 of the first sealing material 50A and the proximal end E1 of the second sealing material 50B is preferably larger than the shortest distance LB between the proximal end E1 of the second sealing material 50B and the proximal end E1 of the third sealing material 50C.

[0069] (Regarding the effects of this embodiment) (1) In the above embodiment, the length dimension L of the plurality of sealing materials 50 is larger than the gap dimension GD. Since the length dimension L is larger than the gap dimension GD, the sealing material 50 bends so that a part of the surface including the tip E2 contacts the catalyst carrier 40. And the plurality of sealing materials 50 are in contact with and overlap each other in the opening direction of each flow path. Thereby, even if the gas pressure increases, the force that presses the end face of the catalyst carrier 40 due to the overlapping of the plurality of sealing materials 50 acts. Therefore, it is easy to suppress the gas from leaking out from the gap between the sealing material 50 and the catalyst carrier 40.

[0070] (2) In the above embodiment, the plurality of sealing materials 50 extend from the partition wall W side, and the tips E2 are in contact with the respective end faces of the catalyst carrier 40. Thereby, it is possible to suppress the gas from entering from one flow path partitioned by the frame into the other flow path.

[0071] Also, the tip E2 of the sealing material 50 extending from the partition wall W between the first flow path 21 and the third flow path 23 faces the first flow path 21 side. From the above test results, if such a relationship exists, even if the pressure of the hot air passing through the third flow path 23 slightly increases, it is possible to suppress the hot air from entering the portion of the catalyst carrier 40 that covers the first flow path 21. That is, it is possible to suppress the organic solvent adsorbed on the catalyst from immediately desorbing in the portion of the catalyst carrier 40 that covers the first flow path 21.

[0072] (3) In the above embodiment, the area of the region of the main surface 51 of the sealing material 50 that contacts the catalyst carrier 40 is 1 / 10 of the entire area of the main surface 51 of the sealing material 50. From the above test results, if it is in contact with the catalyst carrier 40 at this ratio, higher airtightness can be obtained.

[0073] (4) In the above embodiment, the length dimension L of the sealing material 50 is 1.3 times or more the gap dimension GD. Preferably, the length dimension L of the sealing material 50 is 3 times or more the gap dimension GD. From the above test results, since the length dimension L of the sealing material 50 is sufficiently larger than the gap dimension GD, airtightness can be obtained more remarkably.

[0074] (6) In the above embodiment, the second sealing material 50B overlaps the first sealing material 50A. The dimension OL of the portion where the first sealing material 50A and the second sealing material 50B are in contact is 4 mm or more. As shown by the test results, when a plurality of sealing materials 50 are in contact and overlap, a force is generated to press the catalyst carrier 40. Therefore, it is easier to significantly prevent gas leakage from the flow path.

[0075] (7) In the above embodiment, the material of the sealing material 50 is conductive silicone. Conductive silicone has relatively high flexibility. Also, since conductive silicone is less likely to generate static electricity, the possibility of ignition by an organic solvent can be reduced. Furthermore, depending on the composition, the heat-resistant temperature of conductive silicone can be increased. Therefore, conductive silicone is suitable as the material of the sealing material 50 applied to the catalyst device 10 for removing an organic solvent.

[0076] (8) In the above embodiment, the first sealing material 50A, the second sealing material 50B, and the third sealing material 50C overlap in this order from the side of the catalyst carrier 40. And the shortest distance LB between the proximal end E1 of the first sealing material 50A and the proximal end E1 of the second sealing material 50B is larger than the shortest distance LB between the proximal end E1 of the third sealing material 50C and the proximal end E1 of the second sealing material 50B. Assume that the gas pressure in the flow path on the side where the first sealing material 50A is located is set lower than the gas pressure in the flow path on the side where the third sealing material 50C is located. With such a gas pressure relationship, as in the above test results, the airtightness of each flow path can be further enhanced. Note that since the third sealing material 50C and the second sealing material 50B located on the side with lower pressure are densely arranged, their movable range is likely to be small. Also, the contact area between these sealing materials 50 is likely to be large. Thereby, it is considered that the force pressing the first sealing material 50A located on the side with higher pressure toward the catalyst carrier 40 acts more strongly, and the airtightness is improved.

[0077] (9) In the above embodiment, the shortest distance LB between the proximal ends E1 of the sealing material 50 is preferably 1.0 mm or more and 1.5 mm or less. From the test results, due to the sealing material 50 being dense within this numerical range, airtightness can be obtained more significantly.

[0078] (10) In the above embodiment, the gap dimension GD is preferably 1 mm or more and 5 mm or less. In addition to the sealing material 50 overlapping, since the gap between the opening of each through-hole and the catalyst carrier 40 is narrow, leakage of gas from this gap can be more significantly suppressed.

[0079] (11) In the above embodiment, the thickness dimension T of the sealing material 50 is preferably 0.2 mm or more and 0.3 mm or less. From the test results, within this numerical range, airtightness can be enhanced more. Also, when the thickness dimension T of the sealing material 50 is less than 0.2 mm, the rigidity of the sealing material 50 becomes relatively small, so the sealing material 50 is likely to be worn by the air pressure. When the thickness dimension T of the sealing material 50 is greater than 0.3 mm, the number of sheets of the sealing material 50 attached to the frame may decrease, or the contact area between a plurality of sealing materials 50 may become small. Therefore, the thickness dimension T of the sealing material 50 is preferably within the above numerical range.

[0080] <Modification example> The above embodiment and the following modification examples can be implemented in combination with each other within a technically non - conflicting range.

[0081] · The shape of the catalyst device 10 is not limited to the example of the above embodiment. Also, in accordance with the shape of the catalyst device 10, the shapes of the first frame 20, the second frame 30, and the catalyst carrier 40 can be appropriately changed.

[0082] · The type of catalyst that the catalyst carrier 40 has is not limited to the example of the above embodiment. That is, the substance to be adsorbed is not limited to organic solvents. For example, in order to use the catalyst carrier 40 as a deodorizing filter, the type of catalyst may be changed.

[0083] ·The catalyst carrier 40 is not limited to having 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 part of the pores of the catalyst carrier 40 needs to be continuous pores extending from the first end face 41 to the second end face 42 of the catalyst carrier 40.

[0084] ·Each dimension of the catalyst carrier 40 is not limited to the examples of the above-described embodiment. It may be appropriately changed according to the use and type of the catalyst carrier 40. ·The first frame 20 does not necessarily have a plurality of through holes and partitions W. For example, even if the first frame 20 is only a cylindrical body C, leakage of gas can be suppressed by attaching a plurality of sealing materials 50 to the outer periphery of the opening edge of the cylindrical body.

[0085] ·Each dimension of the sealing material 50 is not limited to the examples of the above-described embodiment. Also, each dimension of the sealing material 50 is not limited to the dimensions tested in each comparative test. Specifically, if the length dimension L of the sealing material 50 is longer than the gap dimension GD, it may be less than 1.3 times the gap dimension GD or less than 3 times. The thickness dimension T of the sealing material 50 may be less than 0.1 mm or greater than 0.4 mm. Each dimension of the sealing material 50 may be appropriately changed according to the size of the catalyst device 10 and the like. Even in this case, if a part including the tips E2 of the plurality of sealing materials 50 contacts the end face of the catalyst carrier 40 and the plurality of sealing materials 50 overlap while contacting each other, at least the effect described in (1) can be obtained.

[0086] ·The area of the region of the main surface 51 of the sealing material 50 that contacts the catalyst carrier 40 may be less than 1 / 10 of the area of the entire main surface 51 of the sealing material 50. For example, when the shape of the tip E2 of the sealing material 50 is arc-shaped, the above numerical value can be less than 1 / 10. Also, even in such a case, at least the effect described in (1) can be obtained, and by increasing the number of overlapping sealing materials 50, improvement of the effect can be expected.

[0087] ·The shortest distance LB between the proximal ends E1 of the plurality of sealing materials 50 may be less than 1.0 mm or greater than 1.5 mm. · The material of the sealing material 50 does not have to be silicone and does not have to have conductivity. The material of the sealing material 50 may be, for example, stainless steel.

[0088] · The dimension of the portion where the first sealing material 50A and the second sealing material 50B are in contact may be less than 4 mm. Even in this case, at least the effect described in (1) can be obtained. · The shortest distance LB between the proximal end E1 of the first sealing material 50A and the proximal end E1 of the second sealing material 50B may be less than or equal to the shortest distance LB between the proximal end E1 of the second sealing material 50B and the proximal end E1 of the third sealing material 50C. Even in this case, at least the effect described in (1) can be obtained.

[0089] · The gap dimension GD may be less than 1 mm or may be greater than 5 mm. It may be appropriately changed according to the relationship with the length dimension L of the sealing material 50. <Supplementary Note> The technical ideas derivable from the above embodiments and modification examples are described below.

[0090] [1] A columnar catalyst carrier carrying a catalyst capable of adsorbing a specific substance, A frame having a through hole, A flexible plate-shaped sealing material attached to the frame, Comprising, The frame is attached to the catalyst carrier such that the opening edge of the through hole faces the end face of the catalyst carrier with a gap therebetween, When the edge of the sealing material opposite to the base end connected to the frame is taken as the tip, A part of the main surface of the sealing material including the tip is in contact with the catalyst carrier, A catalytic device in which a part of the tips of a plurality of the sealing materials overlap while being in contact with each other in the direction in which the opening of the through hole faces.

[0091] [2] The frame has a plurality of the through holes and a partition wall separating two adjacent through holes, The plurality of seal materials extend from the partition wall side, and the tip thereof is in contact with the end face of the catalyst carrier in the catalyst device described in [1].

[0092] [3] In the catalyst device described in [1] or [2], the area of the region of the main surface of the seal material that contacts the catalyst carrier is 1 / 10 or more of the entire area of the main surface of the seal material.

[0093] [4] When the shortest dimension from the base end to the tip on the surface of the seal material is defined as the length dimension, and the shortest distance between the base end and the catalyst carrier is defined as the gap dimension, in the catalyst device described in any one of [1] to [3], the length dimension of the seal material is 1.3 times or more of the gap dimension.

[0094] [5] In the catalyst device described in [4], the length dimension of the seal material is 3 times or more of the gap dimension. [6] Among the plurality of seal materials, a specific seal material is defined as the first seal material, a seal material that contacts and overlaps the surface of the first seal material on the side opposite to the catalyst carrier is defined as the second seal material, when the direction parallel to the line segment connecting the base end and the tip on the surface of the seal material with the shortest distance is defined as the length direction, in the catalyst device described in any one of [1] to [5], the dimension of the portion where the first seal material and the second seal material are in contact in the length direction of the first seal material is 4 mm or more.

[0095] [7] The material of the seal material contains silicone and has conductivity in the catalyst device described in any one of [1] to [6]. [8] Among the plurality of seal materials, a specific seal material is defined as the first seal material, a seal material that contacts and overlaps the surface of the first seal material on the side opposite to the main surface is defined as the second seal material, when a seal material that overlaps the surface of the second seal material on the side opposite to the surface that contacts the first seal material is defined as the third seal material, The shortest distance between the base ends of the first sealing material and the second sealing material is greater than the shortest distance between the base end of the second sealing material and the base end of the third sealing material. The catalyst device according to any one of [1] to [7].

[0096] [9] The shortest distance between the base ends of the plurality of sealing materials is 1.0 mm or more and 1.5 mm or less. The catalyst device according to any one of [1] to [8].

[10] 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. The catalyst device according to any one of [1] to [9].

[0097]

[11] The thickness dimension of the sealing material is 0.2 mm or more and 0.3 mm or less. The catalyst device according to any one of [1] to

[10] .

Explanation of reference numerals

[0098] 10… Catalyst device CA… Central axis 20… First frame 30… Second frame 50… Sealing material 51… Main surface E1… Base end E2… Tip 40… Catalyst carrier 41… First end face G… Gap

Claims

1. A columnar catalyst carrier carrying a catalyst capable of adsorbing a specific substance, a frame having through holes, a flexible plate-like sealing material attached to the frame, comprising: the frame is attached to the catalyst carrier such that the opening edge of the through hole faces the end face of the catalyst carrier with a gap therebetween, when the edge of the sealing material opposite to the base end connected to the frame is taken as the tip, a part of the main surface of the sealing material including the tip is in contact with the catalyst carrier, parts of a plurality of the sealing materials including the tips are in contact with each other and overlap in the direction in which the opening of the through hole faces a catalyst device.

2. The frame has a plurality of the through holes and partition walls separating two adjacent ones of the through holes, a plurality of the sealing materials extend from the partition wall side and the tips thereof are in contact with the end face of the catalyst carrier The catalyst device according to claim 1.

3. The area of the region of the main surface of the sealing material that contacts the catalyst carrier is 1 / 10 or more of the total area of the main surface of the sealing material The catalyst device according to claim 1.

4. When the shortest dimension from the base end to the tip on the surface of the sealing material is taken as the length dimension and the shortest distance between the base end and the catalyst carrier is taken as the gap dimension, the length dimension of the sealing material is 1.3 times or more of the gap dimension The catalyst device according to claim 1.

5. The length dimension of the sealing material is 3 times or more of the gap dimension The catalyst device according to claim 4.

6. Among the plurality of sealing materials, a specific one of the sealing materials is taken as the first sealing material, a sealing material that contacts and overlaps the surface of the first sealing material opposite to the catalyst carrier is taken as the second sealing material, when the direction parallel to the line segment connecting the base end and the tip on the surface of the sealing material at the shortest distance is taken as the length direction, the dimension of the portion where the first sealing material and the second sealing material are in contact in the length direction of the first sealing material is 4 mm or more The catalyst device according to claim 1.

7. The material of the sealing material contains silicone and has conductivity The catalyst device according to claim 1.

8. Among the plurality of sealing materials, a specific one of the sealing materials is taken as the first sealing material, a sealing material that contacts and overlaps the surface of the first sealing material opposite to the main surface is taken as the second sealing material, When the sealing material overlapping the surface of the second sealing material opposite to the surface contacting the first sealing material is defined as the third sealing material, the shortest distance between the base end of the first sealing material and the base end of the second sealing material is greater than the shortest distance between the base end of the second sealing material and the base end of the third sealing material. The catalyst device according to claim 1.

9. The shortest distance between the base ends of the plurality of sealing materials is 1.0 mm or more and 1.5 mm or less. The catalyst device according to claim 1.

10. 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. The catalyst device according to claim 1.

11. The thickness dimension of the sealing material is 0.2 mm or more and 0.3 mm or less. The catalyst device according to claim 1.

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