Ozone generator

Abstract

To provide an ozone generator in which even if vibration is transmitted to the ozone generator, the generation of displacement of components contained in a container is suppressed.SOLUTION: An ozone generator in an embodiment of the present invention includes a container, multiple discharge tubes, feed members, fuses, couplings, and coupling supports. The multiple discharge tubes are housed in the container. The feed members are located inside the discharge tubes. The fuses are coupled to and electrically connected to the feed members and are located at least partially inside the discharge tubes. The couplings each connect each of the fuses so that each of the fuses is electrically connected. The couplings are conductive. The coupling supports electrically insulate the container and the outside of the container from the couplings. The coupling supports limit the movement of the couplings against the container.SELECTED DRAWING: Figure 9

Description

[Technical Field]

[0001] The embodiments relate to an ozone generator. [Background technology]

[0002] Ozone generators that generate ozone are known. For example, an ozone generator includes a container, a cylindrical first electrode housed in the container, and a discharge tube housed in the container, the discharge tube being disposed inside the first electrode with a discharge gap between the first electrode and the second electrode and having a second electrode on its inner periphery. The ozone generator applies a voltage between the first electrode and the second electrode to generate a silent discharge in the discharge gap. This allows the ozone generator to generate ozone from a source gas containing oxygen and the like supplied across the discharge gap. Some such ozone generators include a power supply member housed in the container that applies a voltage from a power source to the second electrode, and a fuse housed in the container and disposed between the power supply member and the power source. It would be beneficial for this type of ozone generator to be able to prevent misalignment of the components housed in the container, even when vibrations are transmitted to the ozone generator. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] International Publication No. 2018 / 220735 [Patent Document 2] Japanese Patent Application Publication No. 57-205306 Summary of the Invention [Problem to be solved by the invention]

[0004] The problem to be solved by the present invention is to provide an ozone generator that can suppress the occurrence of displacement of components housed in a container even when vibrations are transmitted. [Means for solving the problem]

[0005] An ozone generator according to an embodiment includes a container, a plurality of discharge tubes, a power supply member, a fuse, a connector, and a connector support. The plurality of discharge tubes are housed in the container. The power supply member is disposed inside the discharge tubes. The fuse is coupled to and electrically connected to the power supply member, and at least a portion of the fuse is disposed inside the discharge tubes. The connector connects the fuses so that they are electrically connected. The connector is conductive. The connector support electrically insulates the connector from the container and the outside of the container. The connector support limits movement of the connector relative to the container. The connector support part is arranged on the opposite side of the connector to a first insulator that electrically insulates the container from the connector and does not electrically insulate the connector from a power source outside the container, and one or more pairs of connector support parts are arranged on either side of the connector. [Brief explanation of the drawings]

[0006] [Figure 1] FIG. 1 is a cross-sectional view showing the overall configuration of an ozone generator according to the first embodiment. [Figure 2] FIG. 2 is an enlarged cross-sectional view of the vicinity of the dielectric electrode of the first embodiment. [Figure 3] FIG. 3 is a side view of the power supply member according to the first embodiment. [Figure 4] FIG. 4 is a cross-sectional view of the power supply member taken along line IV-IV in FIG. [Figure 5] FIG. 5 is an overall perspective view of the elastic member of the power supply member according to the first embodiment. [Figure 6] FIG. 6 is a side view of the elastic member of the first embodiment. [Figure 7] FIG. 7 is a side view of the contact member of the power supply member according to the first embodiment. [Figure 8] FIG. 8 is an enlarged view of part VIII in FIG. [Figure 9] FIG. 9 is a front view of a portion of the ozone generator of the first embodiment. [Figure 10] FIG. 10 is a cross-sectional view of a power supply member according to the second embodiment. [Figure 11] FIG. 11 is a cross-sectional view of a power supply member according to the third embodiment. DETAILED DESCRIPTION OF THE INVENTION

[0007] The following embodiments include similar components. These similar components are assigned common reference numerals, and redundant explanations are omitted. The drawings are schematic, and the dimensional relationships and ratios of the elements may differ from the actual situation. The drawings may also include portions with different dimensional relationships and ratios.

[0008] First Embodiment FIG. 1 is a cross-sectional view showing the overall configuration of an ozone generator 10 according to the first embodiment. FIG. 2 is an enlarged cross-sectional view of the vicinity of a discharge tube 24 according to the first embodiment. The directions indicated by the X, Y, and Z axes shown by arrows in FIG. 1 are the X direction, Y direction, and Z direction, respectively. The X direction, Y direction, and Z direction are perpendicular to each other. The X direction and Y direction are along the horizontal direction. The Z direction coincides with the upward direction in the vertical direction (up and down direction).

[0009] As shown in FIGS. 1 and 2, the ozone generator 10 includes a device main body 12, a power supply 14, and a cooling water supply unit 16.

[0010] The device body 12 includes a container 20, a pair of end plates 21a, 21b, a plurality of metal electrodes 22 (an example of first electrodes), a plurality of discharge tubes 24 having conductive films 36 (an example of second electrodes) on their inner peripheries, a plurality of power supply members 38, a plurality of fuses 40, a plurality of spacers 42, a connector 71, a first insulator 74, and a plurality of connector support members 75A-75E (FIG. 9). The discharge tubes 24, the power supply members 38, the fuses 40, and the spacers 42 are provided for each metal electrode 22. Note that hereinafter, the plurality of connector support members 75A-75E will be collectively referred to as connector support member 75.

[0011] The container 20 is formed in a hollow cylindrical (tubular) shape with a central axis along the Y direction. That is, the axial direction of the central axis of the container 20 is along the Y direction. The container 20 has a tubular portion 20a, a first door 20b, and a second door 20c. The tubular portion 20a is cylindrical with a central axis along the Y direction. The first door 20b is attached to an opening at the end of the tubular portion 20a on the Y direction side so as to be openable and closable. The second door 20c is attached to an end of the tubular portion 20a on the opposite side in the Y direction so as to be openable and closable.

[0012] The container 20 houses a pair of end plates 21a, 21b, a plurality of metal electrodes 22, a plurality of discharge tubes 24, a plurality of power supply members 38, a plurality of fuses 40, a plurality of spacers 42, a connector 71, and a plurality of connector supports 75. The container 20 supports the pair of end plates 21a, 21b, a plurality of metal electrodes 22, a plurality of discharge tubes 24, a plurality of power supply members 38, a plurality of fuses 40, a plurality of spacers 42, a connector 71, and a plurality of connector supports 75. The pair of end plates 21a, 21b, a plurality of metal electrodes 22, a plurality of discharge tubes 24, a plurality of power supply members 38, a plurality of fuses 40, a plurality of spacers 42, a connector 71, and a plurality of connector supports 75 are components housed in the container 20.

[0013] A gas inlet 27, a gas outlet 28, a cooling water inlet 30, and a cooling water outlet 32 ​​are provided on the outer periphery of the container 20. The gas inlet 27 introduces a raw material gas containing oxygen supplied from the outside into the container 20. The gas outlet 28 discharges unreacted raw material gas and ozone (O3) to the outside. The cooling water inlet 30 is provided at the bottom of the container 20. The cooling water inlet 30 introduces a cooling water supply unit 16 supplied from the outside to the outer periphery of the metal electrode 22. The cooling water outlet 32 ​​is provided at the top of the container 20. The cooling water outlet 32 ​​discharges cooling water that has flowed around the outer periphery of the metal electrode 22 to the outside.

[0014] The pair of end plates 21a, 21b includes a conductive material such as stainless steel. The end plates 21a, 21b are formed in a disk shape. The outer peripheries of the end plates 21a, 21b are fixed to the container 20. The end plates 21a, 21b are spaced apart in the Y direction. The end plate 21b is arranged opposite the end plate 21a in the Y direction, facing the end plate 21a and parallel to the end plate 21a. The end plates 21a, 21b are connected to ground potential via the container 20. A plurality of circular holes 26a, 26b are formed in the end plates 21a, 21b. The holes 26a, 26b have approximately the same shape as the ends of the metal electrode 22. The plurality of holes 26a, 26b are arranged at approximately equal intervals.

[0015] The metal electrode 22 is made of the same material as the end plates 21a and 21b, including a conductive material such as stainless steel, and is therefore conductive. A plurality of metal electrodes 22 are provided within the container 20. The plurality of metal electrodes 22 are arranged with their longitudinal directions (i.e., the axial direction of their central axes) parallel to the Y direction and at approximately equal intervals in the X and Z directions. The metal electrodes 22 are formed in a cylindrical (tubular) shape with a central axis parallel to the Y direction and parallel to the central axis of the container 20. One end of the metal electrode 22 is connected to the circular hole 26a in one end plate 21a. The other end of the metal electrode 22 is connected to the circular hole 26b in the other end plate 21b. The ends of the metal electrode 22 are connected to the end plates 21a and 21b, for example, by welding. As a result, both ends of the metal electrode 22 are held by the pair of end plates 21a and 21b without being blocked and are electrically connected to the end plates 21a and 21b. The metal electrodes 22 are connected to a ground potential via the end plates 21a and 21b. The outermost metal electrode 22 among the plurality of metal electrodes 22 forms a cooling water channel 46 between itself and the inner peripheral surface 20d of the container 20. The channel 46 is connected to the cooling water inlet 30 and the cooling water outlet 32 ​​of the container 20. The channel 46 is also formed on the outer periphery of the central metal electrode 22 other than the outermost metal electrode 22.

[0016] A plurality of discharge tubes 24 are housed in a container 20. Each discharge tube 24 is arranged inside the container 20, inside (on the hollow side of) one of the metal electrodes 22, so as to be coaxial with the metal electrode 22. Each discharge tube 24 extends in the Y direction. That is, the axial direction of the central axis of the discharge tube 24 is along the Y direction. The Y direction is an example of a first direction. The discharge tube 24 has a dielectric portion 34 and a conductive film 36.

[0017] The dielectric portion 34 includes a dielectric material such as quartz glass, borosilicate glass, high silicate glass, aluminosilicate glass, or ceramics, and is electrically insulating. The dielectric portion 34 is formed in a cylindrical (tubular) shape extending in the Y direction. The end of the dielectric portion 34 on the end plate 21a side, i.e., the end on the Y direction side, is open. The end of the dielectric portion 34 on the end plate 21b side, i.e., the end on the opposite side of the Y direction, is closed. The dielectric portion 34 is provided inside one of the metal electrodes 22. The dielectric portion 34 is disposed between the metal electrode 22 and the dielectric portion 34 across a discharge gap 44 through which a source gas is supplied. The central axis of the dielectric portion 34 is substantially parallel to the central axes of the container 20 and the metal electrode 22, and the outer peripheral surface of the dielectric portion 34 faces the inner peripheral surface 20d of the metal electrode 22. The open end of the dielectric portion 34 protrudes outward beyond the end plate 21a. The dielectric portion 34 is provided inside one of the metal electrodes 22, but it does not need to be completely contained within the metal electrode 22, as long as at least a portion of it is disposed inside the metal electrode 22.

[0018] The conductive film 36 contains a conductive material such as stainless steel, nickel, carbon, or aluminum, and is conductive. The conductive film 36 is provided on the inner periphery of the discharge tube 24. Specifically, the conductive film 36 is provided on the inner surface of the dielectric portion 34 by sputtering, spraying, vapor deposition, electroless plating, electrolytic plating, painting, or the like using a conductive material. Therefore, the conductive film 36 is formed in a tubular shape that is substantially the same shape as the inner surface of the dielectric portion 34.

[0019] The power supply member 38 includes a conductive material such as stainless steel, and is conductive and ozone resistant. The power supply member 38 is disposed inside the discharge tube 24. The power supply member 38 may be disposed inside (on the hollow side of) the dielectric portion 34 near the opening. The power supply member 38 is electrically connected to the conductive film 36 and the fuse 40. As a result, the power supply member 38 applies the AC voltage of the power source 14, which is applied via the fuse 40, to the conductive film 36.

[0020] The fuse 40 is disposed so that its central axis substantially coincides with the central axis of the dielectric portion 34. One end of the fuse 40, which is the end on the Y-direction side, is coupled (fixed) to the connector 71 and is electrically connected to the connector 71. The one end of the fuse 40 is electrically connected to the power supply 14 via the connector 71, the connection portion 72, and the lead wire 73. The other end of the fuse 40, which is the end on the opposite side in the Y-direction, is coupled (fixed) to the power supply member 38 and is electrically connected to the power supply member 38. At least a portion of the fuse 40 is disposed inside (on the hollow side of) the discharge tube 24. For example, if the dielectric portion 34 is damaged due to dielectric breakdown, the fuse 40 interrupts the overcurrent flowing through the conductive film 36 and separates the damaged discharge tube 24 from the other discharge tubes 24, thereby continuing the operation of the ozone generator 10.

[0021] The connecting body 71 connects the fuses 40 so that they are electrically connected. The connecting body 71 and the connection portion 72 are electrically connected, and the connection portion 72 and the lead wire 73 are electrically connected. The lead wire 73 is electrically connected to the power source 14. As can be seen from the above, the connection portion 72 electrically connects the connecting body 71 and the power source 14 via the lead wire 73. Note that the connection portion 72 may be directly connected to the power source 14. The connection portion 72 is formed, for example, of a conductive plate member. The connection portion 72 and the lead wire 73 are supported by a first insulator 74. The first insulator 74 is fixed to the upper part of the container 20. The first insulator 74 is formed of an insulator. Details of the connecting body 71 will be described later.

[0022] The spacer 42 is interposed between the metal electrode 22 and the discharge tube 24. The spacer 42 maintains a discharge gap 44 between the metal electrode 22 and the discharge tube 24 at a predetermined distance. The spacer 42 supports the discharge tube 24. The spacer 42 may be a protrusion integrated with the metal electrode 22.

[0023] The power supply 14 is electrically connected to the power supply member 38 via the lead wire 73, the connector 71, and the fuse 40. The power supply 14 applies a high-frequency, high-voltage AC voltage to the conductive film 36 via the lead wire 73, the connector 71, the fuse 40, and the power supply member 38.

[0024] The cooling water supply unit 16 is, for example, a chiller unit. The cooling water supply unit 16 is connected to the cooling water inlet 30 of the container 20, and supplies cooling water from the cooling water inlet 30 to a water channel 46 inside the container 20.

[0025] Next, the power supply member 38 will be described. Fig. 3 is a side view of the power supply member 38 of the first embodiment. Fig. 4 is a cross-sectional view of the power supply member 38 taken along line IV-IV in Fig. 3. Fig. 5 is an overall perspective view of the elastic member 50 of the power supply member 38. Fig. 6 is a side view of the elastic member 50. Fig. 7 is a side view of the contact member 52 of the power supply member 38. Fig. 8 is an enlarged view of part VIII in Fig. 7. Part of the contact member 52 is omitted in Fig. 3.

[0026] As shown in FIGS. 3 and 4, the power supply member 38 includes an elastic member 50 and a contact member 52. As shown in FIG.

[0027] As shown in FIGS. 3 to 6, the elastic member 50 is formed in a cylindrical (tubular) shape. The elastic member 50 is arranged inside the dielectric portion 34 so as to be coaxial with the dielectric portion 34. The elastic member 50 includes a conductive material such as stainless steel, and is conductive and ozone resistant. For example, the elastic member 50 is made of stainless steel (e.g., SUS304CSP). Stainless steel has a yield strength of, for example, 880 [N / mm 2]. The material and yield strength of the elastic member 50 are not limited to those described above. One end of the elastic member 50, which is the end in the Y direction, is fixed to the other end of the fuse 40 and is electrically connected to the other end of the fuse 40. An elastically deformable elastic portion 54 is formed in the center of the elastic member 50. The elastic portion 54 is formed in a cylindrical shape with a larger diameter at the center than at the end ends. The elastic portion 54 is configured to be elastically deformable in the radial direction of the dielectric portion 34. A plurality of openings 54a are formed in the elastic portion 54 and are elongated in the axial direction of the elastic member 50. The axial direction of the elastic member 50 is the axial direction of the central axis of the elastic member 50. This allows the elastic portion 54 to more easily elastically deform and press the contact member 52 provided on the outer periphery against the conductive film 36.

[0028] As shown in Figures 3, 4, 7, and 8, the contact member 52 is formed in a cylindrical shape with both longitudinal ends open. The contact member 52 is attached to the outer peripheral surface of the elastic member 50 and covers almost the entire outer peripheral surface of the elastic member 50. The contact member 52 includes a conductive material such as stainless steel, and is conductive and ozone-resistant. The contact member 52 includes multiple metal wires 56. The multiple metal wires 56 include multiple warp threads and multiple weft threads arranged at approximately equal intervals and are knitted together using a knitting method or the like. As a result, the contact member 52 has multiple metal wires 56 arranged approximately evenly in the circumferential and longitudinal directions of the elastic member 50, forming a mesh-like structure with multiple openings arranged in two directions at approximately equal intervals. Each metal wire 56 includes multiple (e.g., two) thin metal wires 58. The multiple thin metal wires 58 are twisted. The wire diameter of the thin metal wires 58 is 80 μm or more. The contact members 52 are pressed radially outward by the elastic force of the elastic member 50, thereby coming into contact with and electrically connecting to the conductive film 36. In this way, the contact members 52 electrically connect the conductive film 36 and the elastic member 50.

[0029] Furthermore, the elastic member 50 presses the contact member 52 against the conductive film 36 with its elastic force, thereby generating a frictional force between the contact member 52 and the conductive film 36 in the axial direction of the discharge tube 24, thereby restricting the relative movement in the Y direction between the conductive film 36 and the contact member 52. The frictional force is, for example, 10 [N] to 20 [N]. Even if an axial force that causes the acceleration of the discharge tube 24 to a predetermined value acts on the discharge tube 24 due to the frictional force, the contact member 52 and the conductive film 36 do not move relative to each other in the axial direction of the discharge tube 24, and therefore the discharge tube 24 does not move relative to the power supply member 38 or the fuse 40 in the axial direction.

[0030] Next, a description will be given of the connector 71 and the connector support part 75. Figure 9 is a front view of a part of the ozone generator 10 of the first embodiment.

[0031] 1 and 9, the connector 71 is disposed outside the discharge tubes 24 within the container 20, not inside (on the hollow side of) the discharge tubes 24. More specifically, the connector 71 is disposed on the Y-direction side of the discharge tubes 24. The connector 71 connects the fuses 40 together and is electrically connected to the fuses 40. The connector 71 is conductive.

[0032] As shown in Fig. 9, the connecting body 71 has a plurality of fuse support portions 71a, a frame portion 71b, and a reinforcing portion 71c. The plurality of fuse support portions 71a, the frame portion 71b, and the plurality of reinforcing portions 71c are made of a conductive material such as stainless steel. Note that Fig. 9 shows the plurality of fuse support portions 71a, the frame portion 71b, and the reinforcing portion 71c only in schematic form. Also, Fig. 9 shows only a portion of the plurality of discharge tubes 24 and the plurality of fuses 40.

[0033] Each of the multiple fuse support portions 71a is formed in the shape of a strip extending in the Y direction. The multiple fuse support portions 71a are arranged at intervals in the Z direction. The fuse support portion 71a may be formed of a single member (e.g., a plate member) or multiple plate members (e.g., plate members). One ends of the multiple fuses 40 are fixed to each fuse support portion 71a with fasteners (not shown) such as screws, and the fuse support portion 71a supports the multiple fuses 40. The fuse support portion 71a is electrically connected to the fuses 40. The shape of the fuse support portion 71a may be other than a strip shape.

[0034] The frame portion 71b is formed, for example, in a polygonal shape. The frame portion 71b may be formed of a single member (for example, a plate member) or a plurality of plate members (for example, plate members). Both ends of each fuse support portion 71a are fixed to the frame portion 71b with fasteners (not shown) such as screws, and the frame portion 71b supports a plurality of fuses 40. The shape of the frame portion 71b may be annular.

[0035] Each of the multiple reinforcing portions 71c is formed in the shape of a strip extending in the Z direction. The multiple reinforcing portions 71c are arranged at intervals in the X direction. The reinforcing portions 71c may be formed of a single member (e.g., a plate member) or multiple plate members (e.g., plate members). Both ends of each reinforcing portion 71c are fixed to the frame portion 71b with fasteners (not shown) such as screws. The shape of the reinforcing portions 71c may be other than a strip shape.

[0036] The plurality of fuse supporting portions 71a, the frame portion 71b, and the reinforcing portion 71c are electrically connected to one another.

[0037] The connector 71 is fixed to the container 20 via a plurality of connector support parts 75 .

[0038] The multiple connector support portions 75 are interposed between the container 20 and the connector 71, spaced apart from the connection portions 72, and restrict movement of the connector 71 relative to the container 20. The multiple connector support portions 75 restrict movement of the connector 71 in the Y direction, the direction opposite to the Y direction, and the direction intersecting the Y direction. The multiple connector support portions 75 are arranged on the inner circumferential surface 20d of the cylindrical portion 20a of the container 20 at intervals in the circumferential direction of the cylindrical portion 20a. The multiple connector support portions 75 electrically insulate the container 20 and the outside (external side) of the container 20 from the connector 71. The multiple connector support portions 75 may be made of insulators. In this embodiment, the insulator used for the connector support portions 75 is referred to as a second insulator. The connector support part 75 may have any configuration as long as it can electrically insulate the connector 71 from the container 20 and the outside (outside) of the container 20. The connector support part 75 may be entirely or partially made of the second insulator. One difference between the first insulator 74 and the connector support part 75 (second insulator) is whether or not it electrically insulates the outside (outside) of the container 20 from the connector 71. The first insulator 74 electrically insulates the container 20 from the connector 71, but does not electrically insulate the connector 71 from the power source 14 outside the container 20. In contrast, the connector support part 75 (second insulator) electrically insulates the container 20 from the connector 71 and electrically insulates the outside of the container 20 from the connector 71.

[0039] Each connector support portion 75 is spaced apart from the connection portion 72 and is interposed between the container 20 and the connector 71. Specifically, one end of each connector support portion 75 is fixed to the inner circumferential surface 20d of the container 20 by a fixing member (not shown). The frame portion 71b of the connector 71 is fixed to the other end of each connector support portion 75 by a fixing member (not shown). In other words, each connector support portion 75 fixes the connector 71 to the container 20.

[0040] The pair of connector support portions 75A and 75D sandwich the connector 71 in a direction perpendicular to the Y direction. The pair of connector support portions 75B and 75E sandwich the connector 71 in a direction perpendicular to the Y direction.

[0041] 1, the connector support portion 75C and the first insulator 74 sandwich the connector 71 in a direction perpendicular to the Y direction.

[0042] Next, the operation of ozone generator 10 will be described. In ozone generator 10 shown in Fig. 1, raw material gas is supplied from gas inlet 27 while cooling water supplied from cooling water inlet 30 flows through water channel 46 outside metal electrode 22, cooling metal electrode 22. In this state, power supply 14 supplies AC voltage between conductive film 36 and metal electrode 22 via fuse 40, elastic member 50 of power supply member 38, and contact member 52. As a result, a high voltage is applied to discharge gap 44 between metal electrode 22 and discharge tube 24, and ozone is generated from oxygen in the raw material gas by silent discharge generated in discharge gap 44. The generated ozone is discharged from gas outlet 28.

[0043] As described above, in the first embodiment, the ozone generator 10 includes the container 20, the plurality of discharge tubes 24, the power supply member 38, the fuses 40, the connector 71, and the connector support 75. The plurality of discharge tubes 24 are housed in the container 20. The power supply member 38 is disposed inside the discharge tubes 24. The fuses 40 are coupled and electrically connected to the power supply member 38, and at least a portion of the fuses 40 is disposed inside the discharge tubes 24. The connector 71 connects the fuses 40 so that they are electrically connected. The connector 71 is conductive. The connector support 75 electrically insulates the connector 71 from the container 20 and the outside of the container 20. The connector support 75 limits movement of the connector 71 relative to the container 20.

[0044] According to this configuration, the connector support part 75 limits movement of the connector 71 relative to the container 20, and therefore movement of the power supply member 38 and the fuse 40 relative to the container 20 is limited by the connector support part 75 via the connector 71. Therefore, even if vibrations are transmitted from the outside to the ozone generator 10 during transportation or after installation of the ozone generator 10, displacement of the power supply member 38 and the fuse 40 is suppressed. Furthermore, with the above configuration, movement of the power supply member 38 and the fuse 40 relative to the container 20 is limited by the connector support part 75 via the connector 71, and therefore vibration of the power supply member 38 and the fuse 40 is suppressed.

[0045] The power supply member 38 also has a contact member 52 and an elastic member 50. The contact member 52 is in contact with the conductive film 36 of the discharge tube 24. The elastic member 50 presses the contact member 52 against the conductive film 36 of the discharge tube 24 by means of its elastic force, thereby generating a frictional force between the contact member 52 and the conductive film 36 of the discharge tube 24, thereby restricting the movement of the discharge tube 24 relative to the contact member 52.

[0046] With this configuration, the elastic member 50 restricts the relative axial movement between the discharge tube 24 and the contact member 52, thereby restricting the relative axial movement between the power supply member 38 and the fuse 40 and the discharge tube 24. Therefore, even if vibrations are transmitted from the outside to the ozone generator 10 during transportation or after installation of the ozone generator 10, the occurrence of axial positional deviation of the discharge tube 24 is suppressed, and the discharge tube 24 is suppressed from jumping out of the metal electrode 22. Furthermore, with the above configuration, the elastic member 50 restricts the relative axial movement between the discharge tube 24 and the contact member 52, thereby suppressing vibration of the discharge tube 24.

[0047] The connector 71 also has a plurality of fuse support portions 71a that support the plurality of fuses 40 and are electrically connected to the fuses 40, and a frame portion 71b that is joined to the plurality of fuse support portions 71a. The connector support portion 75 is interposed between the container 20 and the frame portion 71b.

[0048] According to this configuration, since the plurality of fuse supporting portions 71a are connected by the frame portion 71b, the rigidity of the connecting body 71 can be increased compared to a configuration in which the frame portion 71b is not provided.

[0049] The ozone generator 10 also includes a pair of connector supports 75 (connector supports 75A and 75D, and connector supports 75B and 75E) that sandwich the connector 71 therebetween.

[0050] With this configuration, movement of the connector 71 is more likely to be suppressed.

[0051] The elastic member 50 has a yield strength of 880 [N / mm 2 ]It is composed of the above materials.

[0052] With this configuration, it is easy to make the amount of elastic deformation (stroke amount) of the elastic member 50 relatively large. Therefore, the elastic member 50 can be elastically deformed whether the discharge tube 24 has a relatively small inner diameter or a relatively large inner diameter. In other words, one elastic member 50 can accommodate a plurality of types of discharge tubes 24 with different inner diameters. Therefore, the number of types of elastic members 50 can be reduced.

[0053] <Second embodiment> Fig. 10 is a cross-sectional view of a power supply member 38A according to the second embodiment. As shown in Fig. 10, the power supply member 38A includes an elastic member 50 and a contact member 52A. The contact member 52A is tubular, with one end open (for example, the fuse 40 side) and the other closed. The contact member 52A includes a contact portion 60 and a closed portion 62.

[0054] The contact portion 60 has a configuration substantially similar to that of the contact member 52 of the first embodiment. Therefore, the contact portion 60 is formed in a tubular shape with both ends open. The contact portion 60 is provided on the outer periphery of the elastic member 50. The contact portion 60 is pressed by the elastic member 50 to be electrically connected to the conductive film 36.

[0055] The closed portion 62 is connected to the other opening of the tubular contact member 52 (i.e., the closed end side of the dielectric portion 34). The closed portion 62 covers and closes the other opening of the contact member 52. Like the contact member 52 and the contact portion 60, the closed portion 62 is configured in a mesh shape with woven metal wires 56 formed by twisting a plurality of thin metal wires 58.

[0056] <Third embodiment> Fig. 11 is a cross-sectional view of a power supply member 38B according to the third embodiment. As shown in Fig. 11, the power supply member 38B according to the third embodiment includes an elastic member 50 and a plurality of contact members 52B.

[0057] The contact members 52B have the same configuration as the contact members 52 of the first embodiment. A plurality of contact members 52B are stacked on the outer periphery of the elastic member 50.

[0058] The shapes, numbers, arrangements, and values ​​of the components of the above-described embodiments may be changed as appropriate. The embodiments may be combined as appropriate.

[0059] For example, in the above embodiment, the metal wire rod 56 has two thin metal wires 58, but the number of thin metal wires 58 may be changed as appropriate. For example, the metal wire rod 56 may have one thin metal wire 58 or three or more thin metal wires 58.

[0060] In the above embodiment, the wire diameter of the thin metal wires 58 is set to 80 μm or more, but the wire diameter is not limited to 80 μm or more. For example, the thin metal wires 58 may be 70 μm or more or 120 μm or less.

[0061] Although several embodiments of the present invention have been described, these embodiments are presented as examples and are not intended to limit the scope of the invention. These novel embodiments can be embodied in various other forms, and various omissions, substitutions, and modifications can be made without departing from the spirit of the invention. These embodiments and their modifications are included within the scope and spirit of the invention, and are also included in the scope of the invention and its equivalents as defined in the claims. [Explanation of symbols]

[0062] 10: ozone generator, 20: container, 24: discharge tube, 38, 38A, 38B: power supply member, 50: elastic member, 52, 52A, 52B: contact members, 71: connector, 75, 75A to 75E: connector support portion, 71a: fuse support portion, 71b: frame portion.

Claims

1. A container and a plurality of discharge tubes housed in the container; a power supply member disposed inside the discharge tube; a fuse coupled to and electrically connected to the power supply member, at least a portion of which is disposed inside the discharge tube; a conductive connector that connects the fuses so that the fuses are electrically connected; a connector support portion that electrically insulates the container and the outside of the container from the connector and limits movement of the connector relative to the container; Equipped with the connector support part is disposed on the opposite side of the connector to a first insulator that electrically insulates the container from the connector and does not electrically insulate the connector from a power source outside the container, and one or more pairs of connector support parts are disposed on either side of the connector; Ozone generator.

2. The power supply member is a contact member in contact with the discharge tube; an elastic member that presses the contact member against the discharge tube by elastic force to generate a frictional force between the contact member and the discharge tube, thereby limiting movement of the discharge tube relative to the contact member; With 10. The ozone generator of claim 1.

3. The connector is a plurality of fuse support portions that support the plurality of fuses and are electrically connected to the respective fuses; a frame portion coupled to the plurality of fuse supports; and The connector support portion is interposed between the container and the frame portion.

3. The ozone generator according to claim 1 or 2.

Images