WO2025191785A1 - Ozone generation device and method for attaching object-transfer internal member - Google Patents

Abstract

The purpose of the present disclosure is to provide an ozone generation device that can, in a structure having an object-transfer internal member, reduce environmental load and extend service life without decreasing the efficiency of use. In the present disclosure, an outer frame member (31) has an opening (31b), and an object-transfer internal member (32) is provided in the opening (31b). The object-transfer internal member (32) has a diameter variation property in which the member diameter (d2) becomes less than the opening diameter (d1) of the opening (31) at a cooling temperature (T1) or lower, and the member diameter (d2) becomes equal to or greater than the opening diameter (d1) in a non-cooling temperature range (TH). At a boundary surface (33) between the outer circumferential surface of the object-transfer internal member (32) and the inner circumferential surface of the opening (31b), the object-transfer internal member (32) and the opening (31b) are tightly attached to each other without having another member interposed therebetween.

Description

Ozone generator and method for installing internal components for transmitting objects

This disclosure relates to an ozone generator including an ozone generator that performs an ozone generation process to generate ozone gas from a raw material gas supplied to a discharge space, and a method for installing an internal object-transmitting member provided in the ozone generator.

An example of a conventional ozone generator having an ozone generator that generates a dielectric barrier discharge in the discharge space and performs an ozone generation process to generate ozone gas from a raw material gas (oxygen gas) supplied to the discharge space is the ozone generator disclosed in Patent Document 1.

Such conventional ozone generators have a transmission member for transmitting a transmission target for the ozone generator. Examples of the transmission target include raw material gases such as ozone gas and oxygen gas, and transmission members include an ozone gas passage for transmitting ozone gas and a raw material gas passage for transmitting raw material gas.

Furthermore, conventional ozone generators have an internal object transmission member for outputting an object to be transmitted, such as ozone gas, to the outside, or inputting an object to be transmitted, such as a raw material gas, from the outside. The internal object transmission member is connected to a transmission member so that the object to be transmitted can be transmitted. For example, if the object to be transmitted is ozone gas, the internal object transmission member is connected to an ozone gas passage so that the ozone gas can be transmitted.

Figure 14 is an explanatory diagram that schematically shows the planar structure of a conventional object transmission structure 60. Figure 15 is an explanatory diagram that schematically shows the cross-sectional structure of a conventional object transmission structure 60.

As shown in these figures, the conventional object transmission structure 60 includes, as its main components, an outer frame member 61 having a circular opening 61b in a plan view, and an object transmission internal member 62 that is disposed within the opening 61b and is also circular in a plan view.

The outer frame member 61 includes, as its main components, an alloy outer periphery 61a and an opening 61b that penetrates the central region of the alloy outer periphery 61a. The outer frame member 61 is made of a relatively lightweight material with a high specific strength, such as an aluminum alloy, for the alloy outer periphery 61a, thereby achieving weight savings.

The object transmission internal member 62 includes, as its main components, an alloy outer periphery 62a and a through-flow passage 62b that passes through the central region of the alloy outer periphery 62a. The through-flow passage 62b is circular in plan view to transmit (flow) the object to be transmitted. The alloy outer periphery 62a is made of a corrosion-resistant alloy material, such as stainless steel, that is resistant to corrosion when the object to be transmitted is passed through it.

As such, because it is necessary to change the constituent materials between the outer frame member 61 (alloy outer peripheral portion 61a) and the object transmission internal member 62 (alloy outer peripheral portion 62a), the object transmission structure 60 requires two parts (outer frame member 61 + object transmission internal member 62).

In order to place the object transmission internal member 62 within the opening 61b, the member diameter d62 of the object transmission internal member 62 is set to approximately the same length as the opening diameter d61, so that it gently contacts the inner surface of the opening 61b (opening diameter d61).

The alloy outer periphery 61a, which is made of an aluminum alloy, and the alloy outer periphery 62a, which is made of stainless steel, cannot be directly joined.

Therefore, the conventional object transmission structure 60 requires an O-ring 66, which acts as a sealing member, to ensure close contact between the outer frame member 61 and the object transmission internal member 62.

Specifically, a sealing groove 62c that is circular in plan view is provided in the central region of the outer periphery of the alloy outer periphery 62a. An O-ring 66, which is a sealing member that is circular in plan view, is provided within the sealing groove 62c, thereby improving the airtightness between the inner periphery of the opening 61b of the outer frame member 61 and the outer periphery of the object transmission inner member 62 (alloy outer periphery 62a). This is because the O-ring 66, which acts as a sealing member, is interposed between the inner periphery of the opening 61b of the outer frame member 61 and the outer periphery of the object transmission inner member 62.

Patent No. 3607890

However, since the O-ring 66 generally deteriorates over time due to changes in hardness and corrosion, it is necessary to replace the O-ring 66 during the use of the ozone generator having the object transmission structure 60.

As such, conventional ozone generators with an object transmission structure 60 require the O-ring 66, which serves as a sealing member, to be replaced, which reduces the efficiency of use of the ozone generator. In addition, there is the problem of a high environmental impact associated with the disposal of used O-rings 66.

Furthermore, when replacing the O-ring 66, the task of removing the O-ring 66 is relatively difficult, and there is a risk of damaging the outer frame member 61 or the object transmission internal member 62 during replacement, thereby degrading the performance of the object transmission structure 60. Specifically, there is a risk of damaging the inner surface of the alloy outer peripheral portion 61a (the inner surface of the opening 61b) or the outer surface of the alloy outer peripheral portion 62a, which form the mating portion between the outer frame member 61 and the object transmission internal member 62, and degrading performance.

As such, conventional ozone generators equipped with an object transfer structure 60 have the problem of reducing usage efficiency and increasing environmental impact.

Furthermore, the sealing members such as O-rings 66 used in conventional object transmission structures 60 tend to deteriorate over time, making it difficult to extend the life of conventional ozone generators equipped with object transmission structures 60.

The purpose of this disclosure is to solve the above-mentioned problems and provide an ozone generator with an internal object-transmitting component that reduces environmental impact and extends the lifespan without reducing usage efficiency.

The ozone generator according to the present disclosure comprises an ozone generator that generates a dielectric barrier discharge in a discharge space and performs an ozone generation process that generates ozone gas from a raw material gas supplied to the discharge space; an ozone gas passage for flowing the ozone gas generated in the discharge space; a generator housing member that houses the ozone generator and the ozone gas passage within a housing space; and an object transmission internal member attached to a member mounting area of the generator housing member, wherein the object transmission internal member is connected to a transmission member in a manner that allows a transmission object for the ozone generator to be transmitted, the transmission member being a structure or space for transmitting the transmission object, and the transmission object containing the ozone gas. The transmission member includes the ozone gas passage, the member mounting region has an opening, the object transmission internal member is disposed within the opening, the opening has a circular shape equal to the opening diameter in a plan view, the object transmission internal member has a circular shape equal to the member diameter in a plan view, and the object transmission internal member has a diameter fluctuation property such that the member diameter is smaller than the opening diameter when the temperature is below a predetermined cooling temperature and is greater than or equal to the opening diameter when the temperature is above the predetermined cooling temperature and in a non-cooling temperature range of 0°C or higher, and when the temperature is above the predetermined cooling temperature and in a non-cooling temperature range of 0°C or higher, the object transmission internal member and the opening are in close contact at the boundary surface between the outer circumferential surface of the object transmission internal member and the inner circumferential surface of the opening without any other member in between.

The object transmission internal member provided in the generator housing member of the ozone generator disclosed herein is attached to the member mounting area of the generator housing member in a tight, airtight state in which the object transmission internal member is tightly attached within the opening without any other members in between when in the non-cooling temperature range.

Because the object transmission internal component has the diameter fluctuation property described above, the object transmission internal component, set at a temperature below a predetermined cooling temperature, is placed inside the opening of the component mounting area, and then the temperature of the object transmission internal component is set to the non-cooling temperature range, allowing the object transmission internal component to be mounted in the component mounting area of the generator housing component in the tightly fitted state described above.

As a result, in the ozone generator disclosed herein, the internal object transmission member does not have any parts that require replacement during use, which reliably prevents a decrease in the efficiency of use of the ozone generator.

Furthermore, in the ozone generator disclosed herein, the internal object transmission component does not have any parts that need to be replaced during use, so there is no risk of damage to the internal object transmission component or component mounting area due to component replacement, thereby extending the life of the ozone generator.

In addition, the internal object-transmitting components provided in the ozone generator disclosed herein do not contain any parts that need to be disposed of during use, thereby reducing the environmental impact.

The objects, features, aspects, and advantages of the present disclosure will become more apparent from the following detailed description and accompanying drawings.

FIG. 2 is an explanatory diagram schematically illustrating a cross-sectional structure of an object transmitting structure provided in the ozone generator according to the first embodiment of the present disclosure. 2 is an explanatory diagram schematically illustrating a cross-sectional structure of an outer frame member in the object transmission structure of FIG. 1. FIG. FIG. 2 is an explanatory diagram schematically illustrating a cross-sectional structure of the object transmission internal member of FIG. 1 . FIG. 2 is an explanatory diagram schematically illustrating the configuration of the ozone generator of the first embodiment having an object-transmitting internal member. FIG. 5 is an explanatory diagram schematically illustrating the structure of a target region of the ozone generator shown in FIG. 4. FIG. 5 is an explanatory diagram showing details of a region of interest on the base shown in FIG. 4 . FIG. 1 is an explanatory diagram schematically showing a cross-sectional configuration of an ozone generator according to a first modified example of the first embodiment. FIG. 10 is an explanatory diagram schematically showing a cross-sectional configuration of an ozone generator according to a second modified example of the first embodiment. FIG. 10 is an explanatory diagram schematically showing a cross-sectional configuration of an ozone generator according to a third modified example of the first embodiment. FIG. 10 is an explanatory diagram (part 1) showing a method for attaching an internal object transmission member according to the second embodiment. FIG. 10 is an explanatory diagram (part 2) showing a method for attaching an internal object transmission member according to the second embodiment. FIG. 10 is an explanatory diagram (part 3) showing a method for attaching an internal object transmission member according to the second embodiment. FIG. 10 is an explanatory diagram (part 4) showing a method for attaching an internal object transmission member according to the second embodiment. FIG. 10 is an explanatory diagram schematically illustrating a planar structure of a conventional object transmission structure. FIG. 10 is an explanatory diagram schematically showing a cross-sectional structure of a conventional object transmission structure.

First Embodiment
Fig. 1 is an explanatory diagram schematically showing the cross-sectional structure of an object transmission structure 30 provided in an ozone generator 100 (described later) according to a first embodiment of the present disclosure. Fig. 2 is an explanatory diagram schematically showing the cross-sectional structure of an outer frame member 31 in the object transmission structure 30 in Fig. 1. Fig. 3 is an explanatory diagram schematically showing the cross-sectional structure of an object transmission inner member 32 in the object transmission structure 30.

As shown in these figures, the object transmission structure 30 of embodiment 1 includes, as its main components, an outer frame member 31 having a circular opening 31b in a plan view, and an object transmission internal member 32 that is disposed within the opening 31b and is also circular in a plan view.

The object transmission internal member 32 is a member to which a transmission object for the ozone generator 101, described below, is connected to a transmission member so that the transmission object can be transmitted. A "transmission member" is a structure or space for transmitting the transmission object.

The outer frame member 31 mainly comprises an outer alloy periphery 31a and an opening 31b that penetrates the central region of the outer alloy periphery 31a. The outer frame member 31 is made of a relatively lightweight material with a high specific strength, such as an aluminum alloy, for the outer alloy periphery 31a, thereby achieving weight savings.

The object transmission internal member 32 includes, as its main components, an outer alloy portion 32a and a through-flow passage 32b that penetrates the central region of the outer alloy portion 32a. The through-flow passage 32b is circular in plan view with a through diameter d3 to transmit (flow) the object to be transmitted. The outer alloy portion 32a is made of a corrosion-resistant alloy material, such as stainless steel, that is resistant to corrosion when the object to be transmitted is passed through it.

The opening 31b in the outer frame member 31 is circular in plan view with an opening diameter d1, and the object transmission internal member 32 is circular in plan view with a member diameter d2.

Hereinafter, in this specification, the term "transmission" is used as a concept that includes the flow of gases such as raw material gases, the flow of liquids such as refrigerants including cooling water, and the transmission of electrical signals such as power (voltage).

As such, because it is necessary to change the constituent materials between the outer frame member 31 (alloy outer peripheral portion 31a) and the object transmission internal member 32 (alloy outer peripheral portion 32a), the object transmission structure 30 requires two parts (outer frame member 31 + object transmission internal member 32).

As shown in Figure 1, the object transmission structure 30 has an outer frame member 31 with an opening 31b and the area surrounding the opening 31b as a component mounting area, and the object transmission internal member 32 is attached to the component mounting area in such a manner that the object transmission internal member 32 is positioned within the opening 31b.

The object transmission internal member 32 in the object transmission structure 30 of embodiment 1 has the following diameter fluctuation characteristics.

Diameter fluctuation characteristics: When the cooling temperature is below the specified cooling temperature T1, the member diameter d2 of the object transmission internal member 32 is smaller than the opening diameter d1 of the opening 31b. When the cooling temperature is above T1 and in the non-cooling temperature zone TH of 0°C or higher, the member diameter d2 becomes equal to or larger than the opening diameter d1.

Here, if the member diameter d2 at or below the cooling temperature T1 is defined as the cooled member diameter d22, and the member diameter d2 at the non-cooling temperature zone TH is defined as the non-cooled member diameter d21, then the relationship {d21<d1≦d22} holds between this and the opening diameter d1 of the opening 31b.

In this way, the object transmission structure 30 of embodiment 1 has a diameter fluctuation property in which, when the cooling temperature is below T1, the member diameter d2 (= member diameter d22 when cooled) is smaller than the opening diameter d1, and when the temperature is in the non-cooling temperature zone TH, the member diameter d2 (= member diameter d21 when not cooled) is larger than the opening diameter d1.

Because the object transmission internal member 32 has the above-mentioned diameter fluctuation characteristics, when the object transmission structure 30 is in the non-cooling temperature zone TH, the object transmission internal member 32 and the outer frame member 31 are in tightly attached contact at the boundary surface 33 between the outer peripheral surface of the object transmission internal member 32 and the inner peripheral surface of the opening 31b.

The object transmission internal member 32 can be attached to the member attachment area of the outer frame member 31 as follows. The object transmission internal member 32, which has been set to a cooling temperature T1 or lower, is placed inside the opening 31b of the member attachment area, and the temperature of the object transmission internal member 32 is then set to the non-cooling temperature zone TH. The method for attaching the object transmission internal member 32 will be described in detail in embodiment 2 below.

In this way, the object transmission structure 30 has the object transmission internal member 32 tightly attached within the opening 31b without the need for any other members, including sealing members such as O-rings.

Figure 4 is an explanatory diagram showing a schematic configuration of the ozone generator 100 of embodiment 1, which has the object transmission structure shown in Figures 1 to 3.

The ozone generator 100 functions as a flat-plate stacked ozone generator, and has a combination of a base 24 and a generator cover 110 as a generator housing member having a housing space S100 that houses the ozone generator 101.

In other words, the generator housing member includes a base 24 and a generator cover 110 placed on the surface of the base 24, and a housing space S100 is formed on the surface of the base 24.

The ozone generator 101 is housed within this housing space S100. The ozone generator 101 generates a dielectric barrier discharge in the discharge space 6 and performs an ozone generation process to generate ozone gas G2 from a raw material gas G1, such as oxygen gas, supplied to the discharge space 6.

Furthermore, the ozone generator 100 has an ozone transformer 200 and a high-frequency inverter 300 as a power supply unit that supplies power to the ozone generator 101.

The high-frequency inverter 300 converts the power input from the power supply input 404 to the required frequency and outputs it to the inverter output cable 403. The ozone transformer 200 boosts this power to a predetermined voltage and supplies it to the ozone generator 100 as the high-voltage ozone generation power required for ozone generation.

The power (voltage) for generating ozone supplied from the ozone transformer 200 is supplied from the high-voltage cable 401, which serves as the power supply line, to the high-voltage bushing 120 (including the relay terminal 121), through the power supply terminal 4 in the accommodation space S100, and to the high-voltage electrode 3 of the ozone generator 100. Meanwhile, low voltage is supplied from the low-voltage cable 402 to the low-voltage electrode 7 via the base 24.

The ozone generator 100 comprises multiple electrode modules 102, each of which includes a high-voltage electrode 3 and a low-voltage electrode 7 as its main components. The ozone generator 101 is constructed by stacking a predetermined number of electrode modules 102 on the base 24 in the direction of the arrow Z in the figure in the order "N-1," "N-2," "N-3," ... "N-7," and "N-8."

The ozone generator 101 is covered by a generator cover 110. A source gas inlet 130 is provided on the cover side 110s of the generator cover 110, which supplies source gas G1, which is oxygen gas containing trace amounts of nitrogen, carbon dioxide, etc. The supplied source gas G1, such as oxygen gas, fills the storage space S100 and enters the discharge space 6.

Meanwhile, the base 24 is provided with an ozone gas outlet 11 that discharges the ozone gas G2 generated in the discharge space 6 from the ozone generator 100 to the outside, and a refrigerant inlet/outlet 12 through which a refrigerant such as cooling water that cools the electrode module 102 flows in and out.

Figure 5 is an explanatory diagram showing a schematic structure of the target region R1 of the ozone generator 101. As shown in the figure, a flat high-voltage electrode 3 is provided opposite a flat low-voltage electrode 7, and a flat dielectric 5 is provided between the low-voltage electrode 7 and the high-voltage electrode 3. A discharge space 6 is formed between the low-voltage electrode 7 and the dielectric 5 via a spacer (not shown).

Ozone generating power is supplied to the high-voltage electrode 3 from the ozone transformer 200 shown in Figure 4 via the high-voltage bushing 120 (relay terminal 121) and the power supply terminal 4. The high-voltage electrode 3 is made of a metal such as stainless steel or aluminum. The main surface of the dielectric 5 is in close contact with the high-voltage electrode 3. The dielectric 5 is made of a material such as ceramic, glass, or silicon.

In the ozone generator 100, which is the basic configuration of embodiment 1, the discharge space 6 is formed in a disk shape in a plan view, and the source gas G1 filling the storage space S100 is injected from all around the discharge space 6 toward the center. In other words, in the ozone generator 100, the storage space S100 functions as a transmission member for transmitting (supplying) the source gas G1 to the discharge space 6 of the ozone generator 101.

A dielectric barrier discharge is generated in the discharge space 6 by applying an AC/high voltage between the high-voltage electrode 3 and the low-voltage electrode 7 from an electrode supply unit including an ozone transformer 200 and a high-frequency inverter 300. Therefore, the ozone generator 101 can perform an ozone generation process that converts a raw material gas G1, such as oxygen gas, flowing through the discharge space 6 into ozone gas G2. The ozone gas G2 generated by the ozone generation process is guided from the center of the low-voltage electrode 7 through an ozone gas passage 8 provided within the low-voltage electrode 7 to an ozone gas outlet 11 provided in the base 24.

The low-voltage electrode 7 is a thin, conductive rigid body made by joining two conductive plates made of stainless steel or other materials together to form an ozone gas passage 8 between the plates. In addition to the ozone gas passage 8, the low-voltage electrode 7 is also provided with a refrigerant passage 9 to increase the efficiency of ozone generation. The gas temperature in the discharge space 6 is lowered by flowing a refrigerant such as cooling water through this refrigerant passage 9.

Meanwhile, to cool the high-voltage electrode 3, a water-cooled electrode cooling plate 1 is placed on the high-voltage electrode 3 via an insulating plate 2 with excellent thermal conductivity. The electrode cooling plate 1 is a thin, rigid body made by joining two steel plates made of stainless steel or the like together to form a refrigerant passage 9 between the plates. In other words, a refrigerant passage 9 is also provided within the electrode cooling plate 1, and a refrigerant such as cooling water flows through this refrigerant passage 9.

The ozone gas passage 8 formed in the low-voltage electrode 7 is connected to an ozone gas outlet 11 provided in the base 24. Meanwhile, the refrigerant passage 9 formed in the electrode cooling plate 1 and low-voltage electrode 7 is connected to a refrigerant inlet/outlet 12 provided in the base 24.

The ozone gas passage 8 is a passage for flowing the ozone gas G2 generated in the discharge space 6, and the refrigerant passage 9 is a passage for supplying refrigerant to the ozone generator 101.

The electrode module 102, which includes the low-voltage electrode 7, high-voltage electrode 3, dielectric 5, spacer (not shown), insulating plate 2, and electrode cooling plate 1, is fastened and fixed between the electrode pressing plate 22 and base 24 by tightening bolts 21 that pass through each component.

Figure 6 is an explanatory diagram showing details of the focus area R2 of the base 24 in Figure 4. As shown in the figure, the internal ozone gas member 51 has the same structure as the internal object transmission member 32 shown in Figures 1 to 3. Here, the base 24 corresponds to the outer frame member 31, and the opening 31b in the base 24 for attaching the internal ozone gas member 51 and its surrounding area constitute the member attachment area.

In other words, the ozone gas internal member 51, which serves as the object transmission internal member 32, is attached inside (the opening 31b of) the base 24, which serves as the outer frame member 31. Therefore, the through flow path 32b of the object transmission internal member 32 serves as the ozone gas outlet 11 of the ozone gas internal member 51. In the ozone gas internal member 51, the transmission object is ozone gas G2, and the transmission member serves as the ozone gas passage 8. Note that the opening 31b shown in Figure 6 has a groove structure with a closed top.

The ozone gas internal member 51 is connected to the ozone gas passage 8 so that ozone gas G2 can flow through the through-flow passage 32b of the object transmission internal member 32. The connection between the ozone gas internal member 51 and the ozone gas passage 8 is achieved using existing connection (joining) methods such as socket welding and butt welding. In the structure shown in Figure 6, the ozone gas passage 8 and outer frame member 61 are joined in a manner such that the tip of the ozone gas passage 8 extends into the ozone gas outlet 11.

The refrigerant internal member 52, which serves as the object-transmitting internal member 32, is attached to the base 24 (inside the opening 31b) which serves as the outer frame member 31. Therefore, the through flow passage 32b of the object-transmitting internal member 32 serves as the refrigerant inlet/outlet 12 of the refrigerant internal member 52. In the refrigerant internal member 52, the object to be transmitted is the refrigerant CM, such as cooling water, and the transmission member serves as the refrigerant passage 9.

The refrigerant internal member 52 is connected to the refrigerant passage 9 so that the refrigerant CM can flow through the through-flow passage 32b of the object transmission internal member 32. The connection between the refrigerant internal member 52 and the refrigerant passage 9 is performed using an existing connection method (joining method).

In this way, the base 24, which functions as part of the generator housing member, has two member mounting areas including two openings 31b, and functions as flanges for mounting the ozone gas internal member 51 and the refrigerant internal member 52.

Meanwhile, the source gas internal member 53, which serves as the target object transmission internal member 32, is attached to the cover side surface 110s (inside the opening 31b) of the generator cover 110. Therefore, the through passage 32b of the target object transmission internal member 32 serves as the source gas inlet 130 of the source gas internal member 53. In the source gas internal member 53, the target object to be transmitted is the source gas G1, such as oxygen gas, and the space that serves as the transmission member serves as the storage space S100.

In this way, in the ozone generator 100 with a basic configuration, the raw material gas inlet 130, which serves as the through-flow passage 32b of the raw material gas internal member 53, is connected to the storage space S100 so that the raw material gas G1 can flow into the ozone generator 101.

In addition, a bushing internal member 54 (high-pressure bushing 120) that serves as the object transmission internal member 32 is attached to the cover side surface 110s (inside the opening 31b) of the generator cover 110. As shown in Figure 4, the high-pressure bushing 120 itself functions as the bushing internal member 54.

In the bushing internal member 54, one end of the relay terminal 121, which is a component, is electrically connected to the high-voltage cable 401, and the other end of the relay terminal 121 is electrically connected to the power supply terminal 4, which serves as the power supply path. In this way, in the bushing internal member 54, the transmission object is the ozone generation power, and the transmission member is the power supply terminal 4, which serves as the power supply path. Therefore, the ozone generation power is electrically connected to the power supply terminal 4, which serves as the power supply path, so that it can be supplied via the relay terminal 121 of the bushing internal member 54.

The source gas internal member 53 and the bushing internal member 54 each have substantially the same structure as the object transmission internal member 32 shown in Figures 1 to 3. That is, the cover side surface 110s of the generator cover 110 corresponds to the outer frame member 31, and on the cover side surface 110s, the two openings 31b for attaching the source gas internal member 53 and the high-pressure bushing 120 and the area surrounding the two openings 31b form the component attachment area.

The relay terminal 121 can be installed in the object transmission internal member 32, for example, by passing through the through-flow passage 32b.

In this way, the cover side surface 110s of the generator cover 110, which functions as part of the generator housing member, has two member mounting areas including two openings 31b, and functions as a flange for mounting the source gas internal member 53 and the bushing internal member 54.

The relationship between the object transmission structure 30 shown in Figures 1 to 3 and the ozone generator 100 shown in Figures 4 to 6 is summarized below.

The base 24 of the ozone generator 100 and the cover side surface 110s of the generator cover 110 correspond to the outer frame member 31 shown in Figures 1 to 3. The base 24 and generator cover 110 form a generator housing member.

The object transmission internal member 32 shown in Figures 1 to 3 corresponds to the ozone gas internal member 51 and the refrigerant internal member 52 attached to the base 24, and the source gas internal member 53 and the bushing internal member 54 attached to the cover side surface 110s.

In the base 24, the openings 31b for the ozone gas internal member 51 and the refrigerant internal member 52 and their surrounding areas serve as component mounting areas. Similarly, in the cover side surface 110s, the openings 31b for the source gas internal member 53 and the bushing internal member 54 and their surrounding areas serve as component mounting areas.

Therefore, the base 24 has two component mounting areas: one for the ozone gas internal component 51 and one for the refrigerant internal component 52, and the cover side surface 110s of the generator cover 110 has two component mounting areas: one for the source gas internal component 53 and one for the bushing internal component 54.

In this way, a total of four object-transmitting internal members 32 are attached to four member attachment areas of the generator housing member, including the base 24 and the cover side surface 110s.

As described above, the object transmission internal member 32 provided in the generator housing member of the ozone generator 100, which is the basic configuration of embodiment 1 of the present disclosure, is attached to the member mounting area in a tight, highly airtight state within the opening 31b without any other members in between, in the non-cooling temperature zone TH. In the ozone generator 100, the generator housing member is formed by the combination of the base 24 and the generator cover 110, and the member mounting area is a portion of the base 24 or the cover side surface 110s.

The object transmission internal member 32 has the diameter fluctuation property described above. Therefore, by placing the object transmission internal member 32, which has been set to a temperature below cooling temperature T1, inside the opening 31b and then setting the temperature of the object transmission internal member 32 to the non-cooling temperature zone TH, the object transmission internal member 32 can be attached to the member attachment area of the generator housing member in the tightly attached state described above.

As a result, in the ozone generator 100 of embodiment 1, the object transmission internal member 32 does not have any parts that require replacement during use, so a decrease in the usage efficiency of the ozone generator 100 can be reliably avoided.

Note that parts that require replacement include sealing members such as O-rings. O-rings, which are typical sealing members, generally deteriorate over time, so they require periodic overhauls or other repairs to be performed and the O-rings replaced. This type of work does not occur with the ozone generator 100 of embodiment 1.

Furthermore, the ozone generator 100 of embodiment 1 does not have any parts that need to be replaced while the object transmission internal member 32 is in use, so there is no risk of damage to the object transmission internal member 32 or the component mounting area due to component replacement, thereby extending the life of the ozone generator 100.

In addition, the object transmission internal member 32 provided in the ozone generator 100 of embodiment 1 does not have any parts that need to be discarded during use, which reduces the environmental impact of the ozone generator 100. This is because, with the ozone generator 100 of embodiment 1, there is no need to discard sealing members such as O-rings.

The ozone generator 100 of embodiment 1 has an ozone gas internal member 51 provided in the member mounting area of the base 24. In other words, the base 24 corresponding to the outer frame member 31 and the ozone gas internal member 51 corresponding to the object transmission internal member 32 constitute the object transmission structure 30 shown in Figures 1 to 3.

In the ozone generator 100 of embodiment 1, the ozone gas internal member 51 included in the object transmission internal member 32, which has the outer frame member 31 as the base 24, does not have any parts that require replacement during use. This reliably avoids a decrease in the usage efficiency of the ozone generator 100 that includes the ozone gas internal member 51, and also extends the life of the ozone generator 100.

In addition, in the ozone generator 100 of embodiment 1, the internal ozone gas member 51 provided on the base 24 does not contain any parts that need to be disposed of during use, thereby reducing the environmental impact of the ozone generator 100.

The ozone generator 100 of embodiment 1 has an internal refrigerant member 52 provided in the member mounting area of the base 24. In other words, the base 24 corresponding to the outer frame member 31 and the internal refrigerant member 52 corresponding to the internal object transmission member 32 constitute the object transmission structure 30 shown in Figures 1 to 3.

In the ozone generator 100 of embodiment 1, the refrigerant internal member 52 included in the object transmission internal member 32, which has the outer frame member 31 as the base 24, does not have any parts that require replacement during use. This reliably avoids a decrease in the usage efficiency of the ozone generator 100 that includes the refrigerant internal member 52, and also extends the life of the ozone generator 100.

In addition, in the ozone generator 100 of embodiment 1, the refrigerant internal member 52 attached to the base 24 does not contain any parts that need to be disposed of during use, thereby reducing the environmental impact of the ozone generator 100.

The ozone generator 100 of embodiment 1 has a source gas internal member 53 provided in the member mounting area of the cover side surface 110s of the generator cover 110. In other words, the cover side surface 110s corresponding to the outer frame member 31 and the source gas internal member 53 corresponding to the object transmission internal member 32 constitute the object transmission structure 30 shown in Figures 1 to 3.

In the ozone generator 100 of embodiment 1, the source gas internal member 53 included in the object transmission internal member 32, which has the outer frame member 31 as the cover side surface 110s, does not have any parts that require replacement during use. This reliably avoids a decrease in the usage efficiency of the ozone generator 100 having the source gas internal member 53, and also extends the life of the ozone generator 100.

In addition, in the ozone generator 100 of embodiment 1, the internal member 53 for raw material gas provided on the cover side surface 110s does not contain any parts that need to be discarded during use, thereby reducing the environmental impact of the ozone generator 100.

In the ozone generator 100 of embodiment 1, a bushing inner member 54 is provided as a high-pressure bushing 120 in the component mounting area of the cover side surface 110s of the generator cover 110. In other words, the cover side surface 110s corresponding to the outer frame member 31 and the bushing inner member 54 corresponding to the object transmission inner member 32 constitute the object transmission structure 30 shown in Figures 1 to 3.

In the ozone generator 100 of embodiment 1, the bushing internal member 54 included in the object transmission internal member 32, which has the outer frame member 31 as the cover side surface 110s, does not have any parts that require replacement during use. This reliably avoids a decrease in the usage efficiency of the ozone generator 100 equipped with the bushing internal member 54, and also extends the life of the ozone generator 100.

In addition, in the ozone generator 100 of embodiment 1, the bushing internal member 54 provided on the cover side surface 110s does not contain any parts that need to be discarded during use, thereby reducing the environmental impact of the ozone generator 100.

Furthermore, the generator housing member in the ozone generator 100, which is the basic configuration of embodiment 1, is a combined structure of the base 24 and the generator cover 110. Therefore, before the generator housing member is completed, the object transmission internal member 32 (51-54) can be attached relatively easily to the base 24 or generator cover 110, which are each a single component.

In other words, the ozone gas internal member 51 and the refrigerant internal member 52 can be attached to the base 24, which is a single-piece structure prior to becoming a generator housing member, and the raw material gas internal member 53 and the bushing internal member 54 can be attached to the cover side surface 110s of the generator cover 110, which is a single-piece structure prior to becoming a generator housing member.

As a result, the attachment efficiency of the object transmission internal member 32 can be improved during the manufacturing stage of the ozone generator 100 of embodiment 1.

(First Modification)
7 is an explanatory diagram schematically illustrating a cross-sectional configuration of an ozone generator 100A according to a first modification of the first embodiment of the present disclosure. Hereinafter, components similar to those of the ozone generator 100 having the basic configuration shown in FIGS. 4 to 6 are designated by the same reference numerals, and descriptions thereof will be omitted as appropriate. The following description will focus on the characteristic features of the ozone generator 100A.

As shown in the figure, the generator housing member of the ozone generator 100A includes, as its main components, a base 24A and a generator cover 110A placed on the surface of the base 24A. In the first variant, a housing space S100 covered by the generator cover 110A is formed on the surface of the base 24A.

The ozone gas internal member 51, the refrigerant input internal member 52A, and the refrigerant output internal member 52B each have a structure similar to the object transmission internal member 32 in the object transmission structure 30 shown in Figures 1 to 3. Here, the base 24A corresponds to the outer frame member 31, and in the base 24A, three openings 31b for the ozone gas internal member 51, the refrigerant input internal member 52A, and the refrigerant output internal member 52B, respectively, and the areas surrounding the three openings 31b, form the component mounting areas.

The refrigerant input internal member 52A, which serves as the object-transmitting internal member 32, is attached to the base 24A (inside the opening 31b) which serves as the outer frame member 31, and the through-flow passage 32b of the object-transmitting internal member 32 serves as the refrigerant inlet 12A of the refrigerant input internal member 52A. In the refrigerant input internal member 52A, the object to be transmitted is the refrigerant CM, such as cooling water, and the transmission member serves as the refrigerant input passage 9A. The refrigerant input passage 9A is a passage for supplying the refrigerant, such as cooling water, to the ozone generator 101.

The refrigerant input internal member 52A is connected to the refrigerant input passage 9A so that the refrigerant CM can flow through the through-flow passage 32b of the object transmission internal member 32. The connection between the refrigerant input internal member 52A and the refrigerant input passage 9A is performed using an existing connection method (joining method).

The refrigerant output internal member 52B, which serves as the object-transmitting internal member 32, is attached to the base 24A (inside the opening 31b), which serves as the outer frame member 31, and the through-flow passage 32b of the object-transmitting internal member 32 serves as the refrigerant outlet 12B of the refrigerant output internal member 52B. In the refrigerant output internal member 52B, the object to be transmitted is the refrigerant CM, and the transmission member is the refrigerant output passage 9B. The refrigerant output passage 9B is a passage for discharging the refrigerant supplied to the ozone generator 101.

The refrigerant output internal member 52B is connected to the refrigerant output passage 9B so that the refrigerant CM can flow through the through-flow passage 32b of the object transmission internal member 32. The connection between the refrigerant output internal member 52B and the refrigerant output passage 9B is performed using an existing connection method (joining method).

In this way, the base 24A, which functions as part of the generator housing member, has three member mounting areas including three openings 31b, and functions as flanges for mounting the ozone gas internal member 51, the refrigerant input internal member 52A, and the refrigerant output internal member 52B.

Meanwhile, the source gas internal member 53 and the bushing internal member 54 are attached to the cover side surface 110s of the generator cover 110A. The source gas internal member 53 and the bushing internal member 54 each have substantially the same structure as the object transmission internal member 32 in the object transmission structure 30 shown in Figures 1 to 3.

In other words, the cover side surface 110s of the generator cover 110 corresponds to the outer frame member 31, and on the cover side surface 110s, the two openings 31b for the source gas internal member 53 and the high-pressure bushing 120 and the surrounding areas of each of the two openings 31b form the component mounting areas.

The raw material gas internal member 53, which serves as the object transmission internal member 32, is attached to (the opening 31b of) the cover side surface 110s, which serves as the outer frame member 31, and the through passage 32b of the object transmission internal member 32 serves as the raw material gas inlet 130 of the raw material gas internal member 53. In the raw material gas internal member 53, the object to be transmitted is the raw material gas G1, and the transmission member serves as the raw material gas passage 18.

The raw material gas passage 18 is provided to supply the raw material gas G1 to the discharge space 6 (not shown). As in the ozone generator 100 with the basic configuration, the storage space S100 may function as a transmission member for the raw material gas G1 instead of the raw material gas passage 18.

In this way, the cover side surface 110s of the generator cover 110A, which functions as part of the generator housing member, has two member mounting areas including two openings 31b, and functions as a flange for mounting the source gas internal member 53 and the bushing internal member 54.

The ozone generator 100A of this first variant has the same effects as the basic configuration, as well as the following effects.

The ozone generator 100A of the first modified example has a refrigerant input internal member 52A and a refrigerant output internal member 52B provided in the member mounting area of the base 24A. In other words, the base 24A corresponding to the outer frame member 31 and the refrigerant input internal member 52A and the refrigerant output internal member 52B corresponding to the two object transmission internal members 32 realize the object transmission structure 30 configured as shown in Figures 1 to 3 in a two-unit configuration.

In the ozone generator 100 of embodiment 1, the refrigerant input internal member 52A and the refrigerant output internal member 52B included in the object transmission internal member 32, which has the outer frame member 31 as the base 24A, do not have any parts that require replacement during use. This reliably avoids a decrease in the usage efficiency of the ozone generator 100A, which has the refrigerant input internal member 52A and the refrigerant output internal member 52B, and also extends the life of the ozone generator 100A.

In addition, in the ozone generator 100A of the first modified example, the refrigerant input internal member 52A and the refrigerant output internal member 52B provided on the base 24A do not contain any parts that need to be disposed of during use, which reduces the environmental impact of the ozone generator 100A.

(Second Modification)
Figure 8 is an explanatory diagram schematically illustrating a cross-sectional configuration of ozone generator 100B according to a second modified example of the first embodiment of the present disclosure. In the following, components similar to those of ozone generator 100 having the basic configuration shown in Figures 4 to 6 or ozone generator 100A according to the first modified example shown in Figure 7 are designated by the same reference numerals and will not be described as necessary. The following description will focus on the characteristics of ozone generator 100B.

As shown in the figure, the generator housing member of the ozone generator 100B includes, as its main components, a base 24B and a generator cover 110B placed on the surface of the base 24B. In the second variant, a housing space S100 covered by the generator cover 110B is formed on the surface of the base 24B.

The base 24B is provided with an internal member 51 for ozone gas, an internal member 52A for refrigerant input, an internal member 52B for refrigerant output, and an internal member 53 for raw material gas.

The ozone gas internal member 51, refrigerant input internal member 52A, refrigerant output internal member 52B, and raw material gas internal member 53 each have a structure similar to the object transmission internal member 32 in the object transmission structure 30 shown in Figures 1 to 3. Here, the base 24B corresponds to the outer frame member 31, and on the base 24B, four openings 31b for the ozone gas internal member 51, refrigerant input internal member 52A, refrigerant output internal member 52B, and raw material gas internal member 53, respectively, and the areas surrounding the four openings 31b, form the component mounting areas.

In this way, the base 24B, which functions as part of the generator housing member, has four member mounting areas including four openings 31b, and functions as flanges for mounting the ozone gas internal member 51, the refrigerant input internal member 52A, the refrigerant output internal member 52B, and the raw material gas internal member 53.

Meanwhile, a bushing internal member 54 is attached to the cover side surface 110s of the generator cover 110B as the high-pressure bushing 120. The bushing internal member 54 has substantially the same structure as the object transmission internal member 32 in the object transmission structure 30 shown in Figures 1 to 3. In other words, the cover side surface 110s of the generator cover 110 corresponds to the outer frame member 31, and on the cover side surface 110s, the opening 31b for the high-pressure bushing 120 and the area surrounding the opening 31b form the member attachment area.

In this way, the cover side surface 110s of the generator cover 110B, which functions as part of the generator housing member, has a material mounting area including the opening 31b, and functions as a flange for mounting the bushing inner member 54.

The ozone generator 100B of this second variant has the same basic configuration and provides the same effects as the first variant.

(Third Modification)
Figure 9 is an explanatory diagram schematically illustrating a cross-sectional configuration of ozone generator 100C according to a third modified example of the first embodiment of the present disclosure. Hereinafter, components similar to those of ozone generator 100 having the basic configuration shown in Figures 4 to 6, ozone generator 100A according to the first modified example shown in Figure 7, or ozone generator 100B according to the second modified example shown in Figure 8 will be assigned the same reference numerals and descriptions thereof will be omitted as appropriate. The following description will focus on the characteristic features of ozone generator 100C.

As shown in the figure, a generator housing 105 having a single structure is provided as the generator housing member for the ozone generator 100C. The generator housing 105 has an internal housing space S100 and is configured in a housing shape.

The housing bottom 105b of the generator housing 105 is provided with an internal member 51 for ozone gas, an internal member 52A for refrigerant input, an internal member 52B for refrigerant output, and an internal member 53 for raw material gas.

The ozone gas internal member 51, the refrigerant input internal member 52A, the refrigerant output internal member 52B, and the raw material gas internal member 53 each have a structure similar to the object transmission internal member 32 in the object transmission structure 30 shown in Figures 1 to 3.

In other words, the housing bottom 105b corresponds to the outer frame member 31, and on the housing bottom 105b, the four openings 31b for the ozone gas internal member 51, the refrigerant input internal member 52A, the refrigerant output internal member 52B, and the raw material gas internal member 53, and the areas surrounding the four openings 31b, form the component mounting areas.

In this way, the housing bottom 105b of the generator housing 105, which is the generator housing member, has four member mounting areas including four openings 31b, and functions as flanges for mounting the ozone gas internal member 51, the refrigerant input internal member 52A, the refrigerant output internal member 52B, and the raw material gas internal member 53.

Meanwhile, a bushing internal member 54 is attached to the housing side surface 105s of the generator housing 105 as the high-pressure bushing 120. The bushing internal member 54 has substantially the same structure as the object transmission internal member 32 in the object transmission structure 30 shown in Figures 1 to 3. In other words, the housing side surface 105s of the generator housing 105 corresponds to the outer frame member 31, and on the housing side surface 105s, the opening 31b for the high-pressure bushing 120 and the area surrounding the opening 31b form the member attachment area.

In this way, the housing side surface 105s of the generator housing 105, which is the generator housing member, has a material mounting area that includes the opening 31b, and functions as a flange for mounting the bushing internal member 54.

The ozone generator 100C of this third variant has the same effects as the basic configuration, first variant, and second variant, and also has the following unique effects.

The generator housing 105, which serves as the generator housing member in the third modified ozone generator 100C, has a single structure, so the number of parts in the generator housing member can be minimized.

<Second Embodiment>
10 to 13 are explanatory diagrams showing a method of attaching the object transmitting internal member 32 according to the second embodiment of the present disclosure.

The object-transmitting internal member 32 is a component of the ozone generator 100 of embodiment 1 and the ozone generators 100A to 100C of the first to third modified examples.

For example, in the ozone generator 100 having the basic configuration of embodiment 1 shown in Figures 4 to 6, the base 24 or the cover side surface 110s of the generator cover 110 serves as the outer frame member 31, and the ozone gas internal member 51, the refrigerant internal member 52, the raw material gas internal member 53, and the bushing internal member 54 serve as the object transmission internal member 32.

Furthermore, in the ozone generator 100A, which is a first modified example shown in Figure 7, the base 24A or the cover side surface 110s of the generator cover 110A serves as the outer frame member 31, and the ozone gas internal member 51, the refrigerant input internal member 52A, the refrigerant output internal member 52B, the raw material gas internal member 53, and the bushing internal member 54 serve as the object transmission internal member 32.

On the other hand, in the second modified ozone generator 100B shown in Figure 8, the base 24B or the cover side surface 110s of the generator cover 110B serves as the outer frame member 31, and the ozone gas internal member 51, the refrigerant input internal member 52A, the refrigerant output internal member 52B, the raw material gas internal member 53, and the bushing internal member 54 serve as the object transmission internal member 32.

In the ozone generator 100C, which is a third modified example shown in Figure 9, the housing bottom 105b or housing side surface 105s of the generator housing 105 serves as the outer frame member 31, and the ozone gas internal member 51, the refrigerant input internal member 52A, the refrigerant output internal member 52B, the raw material gas internal member 53, and the bushing internal member 54 serve as the object transmission internal member 32.

In this way, the multiple object-transmitting internal members 32 are attached to the member attachment area of the outer frame member 31 as components of the ozone generator 100 (100A-100C). Hereinafter, the ozone generators 100, 100A-100C may be collectively referred to as "ozone generator 100, etc."

The ozone generator 100 etc. has an ozone generator 101. The ozone generator 101 generates a dielectric barrier discharge in the discharge space 6 and performs an ozone generation process to generate ozone gas G2 from a raw material gas G1 supplied to the discharge space 6. The ozone generator 101 is housed in the housing space S100 of the generator housing member.

The storage space S100 is provided with an ozone gas passage 8 for passing the ozone gas G2 generated in the discharge space 6, a refrigerant passage 9 (refrigerant input passage 9A, refrigerant output passage 9B) for passing a refrigerant such as cooling water, a source gas passage 18 for passing the source gas G1, and a power supply terminal 4 that serves as a power supply path. In the ozone generator 100 with a basic configuration, the storage space S100 itself functions as a transmission member for the source gas G1.

The process for installing the object transmission internal member 32 will be explained below with reference to Figures 10 to 13. The installation method involves steps (a) to (c) described below. Note that for ease of explanation, the through-flow passage 32b provided in the object transmission internal member 32 has been omitted from Figures 10 to 13.

Step (a)...As shown in Figure 10, prepare an outer frame member 31 having an opening 31b and an object-transmitting inner member 32 to be attached within the opening 31b.

The opening 31b has a circular shape with an opening diameter d1 in plan view, and the object transmission internal member 32 has a circular shape with a member diameter d2 in plan view. The outer peripheral surface of the object transmission internal member 32 does not have any recesses such as sealing grooves.

In the outer frame member 31, the opening 31b and its surrounding area serve as a component mounting area for mounting the object transmission internal component 32.

The object transmission internal member 32 has a diameter fluctuation property in which the member diameter d2 of the object transmission internal member 32 is smaller than the opening diameter d1 when the temperature is below a predetermined cooling temperature T1, and when the temperature is above T1 and in the non-cooling temperature zone TH of 0°C or higher, the member diameter d2 becomes equal to or larger than the opening diameter d1.

The non-cooling temperature zone TH is a temperature range above the cooling temperature T1 and above 0°C, and includes the room temperature zone TR of {0-40°C}. Note that the temperature at which the ozone generator 101 performs the ozone generation process is also included in the temperature range of the non-cooling temperature zone TH.

In Figures 10 to 13, the member diameter d2 when in the non-cooling temperature zone TH is referred to as the non-cooling member diameter d21, and the member diameter d2 when the cooling temperature is below T1 is referred to as the cooling member diameter d22. The outer frame member 31 is excluded from the cooling target and is always set to a temperature in the non-cooling temperature zone TH, so it has a constant opening diameter d1.

For example, in the non-cooling temperature zone TH, the dimensions are set so that the relationship between the non-cooling member diameter d21 and the opening diameter d1 satisfies equation (1) {d21 = k d1...(1)}. Here, the coefficient k is set to {k = 1.0002 to 1.0003}.

Therefore, as shown in Figure 10, when step (a) is performed, the uncooled member diameter d21 of the object-transmitting internal member 32 is longer than the opening diameter d1 of the outer frame member 31.

After step (a) is executed, step (b) is executed. Note that step (b) includes the following steps (b-1) and (b-2).

Step (b-1)...As shown in Figure 11, the object transmission internal member 32 is set to a low temperature below cooling temperature T1. The temperature of the outer frame member 31 is set to the non-cooling temperature zone TH.

Step (b-2)...As shown in Figure 12, the object transmission internal member 32 is placed within the opening 31b of the outer frame member 31 at a temperature below cooling temperature T1.

By performing step (b-1), the diameter d2 of the internal object transmission member 32 is reduced from the uncooled diameter d21 to the cooled diameter d22, and equation (2) {d22<d1} holds. This point is described in more detail below.

If the material constituting the internal object transmission member 32 is a corrosion-resistant alloy material such as stainless steel, the member diameter d2 tends to shorten as the temperature decreases due to thermal strain ε, which is positively correlated with temperature.

Therefore, by setting the temperature of the object-transmitting internal member 32 to a cooling temperature T1 or lower, which is sufficiently lower than 0°C, it is possible to achieve a cooled member diameter d22 that satisfies the above-mentioned formula (2). The cooling temperature T1 is set to a value sufficiently lower than 0°C within the range of {-270°C to -20°C}, for example, 196°C.

When step (b-2) is performed, the above formula (2) is satisfied, and therefore a gap 35 is created between the outer surface of the object transmission internal member 32 and the inner surface of the opening 31b, making it relatively easy to position the object transmission internal member 32 within the opening 31b.

In this way, step (b), which includes the above-mentioned steps (b-1) and (b-2), involves placing the object-transmitting internal member 32, which has been set to a cooling temperature equal to or lower than T1, within the opening 31b of the member mounting area in the outer frame member 31. The member mounting area of the outer frame member 31 is the opening 31b and its surrounding area. After step (b) is performed, the following step (c) is executed.

Step (c)...With the object transmission internal member 32 placed within the opening 31b of the outer frame member 31, the set temperature of the object transmission internal member 32 is increased from the cooling temperature T1 to the non-cooling temperature zone TH.

As a result, as shown in Figure 13, an object transmission structure 30 can be obtained in which the outer frame member 31 and the object transmission internal member 32 are integrated, with the outer surface of the object transmission internal member 32 being in close contact with the boundary surface 33 with the inner surface of the opening 31b.

In the non-cooling temperature zone TH, the above-mentioned formula (1) holds, so the gap 35 between the inner surface of the opening 31b and the object transmission internal member 32 is completely filled, and the outer surface of the object transmission internal member 32 and the inner surface of the opening 31b are in tight contact at the boundary surface 33. In other words, the object transmission internal member 32 is attached within the opening 31b of the outer frame member 31 in a tightly attached state.

Furthermore, the ozone gas internal member 51, which forms the object transmission internal member 32, is sufficiently small compared to the base 24, which forms the outer frame member 31, and the cover side surface 110s of the generator cover 110, and therefore the force (stress x contact area) that the outer frame member 31 receives from the object transmission internal member 32 is also relatively small. For this reason, even if equation (1) holds in the non-cooling temperature zone TH in an object transmission structure 30 to which the object transmission internal member 32 is attached, the outer frame member 31, such as the base 24 or generator cover 110, will not deform.

The operating temperature of the ozone generator 100 when the ozone generator 101 is in an operating state is included in the non-cooling temperature zone TH. Furthermore, the temperature of the refrigerant CM, such as cooling water, is above 0°C, and the supply of refrigerant CM does not cause the temperature of the object transmission internal member 32 to fall below the cooling temperature T1.

Therefore, after the object transmission structure 30 is completed, the tightly fitted state of the object transmission internal member 32 within the opening 31b is maintained with good stability.

After the object transmission structure 30 is completed, the object transmission internal member 32 is attached to the member attachment area as the ozone gas internal member 51, the refrigerant internal member 52 (refrigerant input internal member 52A, refrigerant output internal member 52B), the raw material gas internal member 53, and the bushing internal member 54. In other words, the object transmission internal member 32 becomes a component of the ozone generator 100, etc.

For example, in the case of the ozone generator 100 of embodiment 1 shown in Figures 4 to 6, the ozone gas internal member 51 and the refrigerant internal member 52, which each serve as the object transmission internal member 32, are attached to the base 24, which serves as the outer frame member 31, using the attachment method for the object transmission internal member 32 of embodiment 2.

Similarly, the source gas internal member 53 and the bushing internal member 54, which each become the object transmission internal member 32, are attached to the cover side surface 110s of the generator cover 110, which becomes the outer frame member 31, using the attachment method for the object transmission internal member 32 in embodiment 2.

The method for installing the object transmission internal member 32, which is the second embodiment of the present disclosure, utilizes the above-mentioned diameter fluctuation properties of the object transmission internal member 32 to perform the above-mentioned steps (a) to (c).

By performing the above-described steps (b) and (c), the object transmission internal member 32 can be attached in a tightly fitted state within the opening 31b of the member attachment area in the outer frame member 31 relatively easily, without the need for other members such as sealing members including O-rings.

As a result, the method for attaching the object transmission internal member in embodiment 2 allows the object transmission internal member 32 to be attached to the outer frame member 31 without the need for other members such as sealing members, thereby reliably avoiding a decrease in the usage efficiency of the ozone generator 100, etc., that would otherwise be associated with the replacement of other members.

In the case of the ozone generator 100 with a basic configuration, the object transfer structure 30 corresponds to, for example, the combination of the base 24, the ozone gas internal member 51, and the refrigerant internal member 52, and the combination of the cover side surface 110s of the generator cover 110, the raw material gas internal member 53, and the bushing internal member 54.

Although the present disclosure has been described in detail, the above description is illustrative in all respects and does not limit the present disclosure. It is understood that countless variations not illustrated can be envisioned without departing from the scope of the present disclosure.

DESCRIPTION OF SYMBOLS 4 Power supply terminal 8 Ozone gas passage 9 Refrigerant passage 9A Refrigerant input passage 9B Refrigerant output passage 11 Ozone gas outlet 12 Refrigerant inlet/outlet 12A Refrigerant inlet 12B Refrigerant outlet 18 Raw material gas passage 24, 24A, 24B Base 30 Structure for transmitting object 31 Outer frame member 31b Opening 32 Internal member for transmitting object 32b Through flow path 51 Internal member for ozone gas 52 Internal member for refrigerant 52A Internal member for refrigerant input 52B Internal member for refrigerant output 53 Internal member for raw material gas 54 Internal member for bushing 100, 100A to 100C Ozone generator 101 Ozone generator 105 Generator accommodating housing 105b Housing bottom 105s Housing side 110, 110A, 110B Generator cover 110s Cover side surface 120 High-pressure bushing 130 Raw material gas inlet 200 Ozone transformer 300 High-frequency inverter CM Refrigerant d1 Opening diameter d2 Component diameter d21 Component diameter when not cooled d22 Component diameter when cooled G1 Raw material gas G2 Ozone gas S100 Storage space

Claims (9)

an ozone generator that performs an ozone generation process by generating a dielectric barrier discharge in a discharge space and generating ozone gas from a raw material gas supplied to the discharge space;
an ozone gas passage for flowing the ozone gas generated in the discharge space;
a generator housing member that houses the ozone generator and the ozone gas passage in a housing space;
an object-transmitting internal member attached to a member attachment region of the generator housing member;
the object transmission internal member is connected to a transmission member so that a transmission object for the ozone generator can be transmitted therethrough;
the transmission member is a structure or space for transmitting the transmission object, the transmission object includes the ozone gas, and the transmission member includes the ozone gas passage;
The component attachment region has an opening,
the object-transmitting internal member is disposed within the opening;
The opening has a circular shape with an opening diameter in a plan view, and the object transmission internal member has a circular shape with a member diameter in a plan view,
the internal object transmission member has a diameter fluctuation property in which the member diameter is smaller than the opening diameter when the temperature is equal to or lower than a predetermined cooling temperature, and the member diameter is equal to or larger than the opening diameter when the temperature is higher than the predetermined cooling temperature and in a non-cooling temperature range of 0°C or higher,
In the non-cooling temperature zone, the object transmission internal member and the opening are in close contact with each other at a boundary surface between an outer circumferential surface of the object transmission internal member and an inner circumferential surface of the opening without any other member therebetween.
Ozone generator. 2. The ozone generator according to claim 1,
the object transmission internal member has a through flow path for passing the object to be transmitted;
the object-transmitting internal member includes an ozone gas internal member;
the ozone gas internal member is connected to the ozone gas passage so that the ozone gas can be transmitted through the through-flow path of the object transmission internal member;
Ozone generator. 3. The ozone generator according to claim 2,
a refrigerant passage for supplying a refrigerant to the ozone generator;
the refrigerant passage is accommodated within the accommodation space of the generator accommodation member,
the transfer object includes the refrigerant, and the transfer member includes the refrigerant passage;
the object-transmitting internals include refrigerant internals;
The refrigerant internal member is connected to the refrigerant passage so that the refrigerant can be transmitted through the through-flow passage of the object transmission internal member.
Ozone generator. 4. The ozone generator according to claim 3,
the refrigerant passage includes a refrigerant input passage for supplying the refrigerant to the ozone generator;
a refrigerant output passage for discharging the refrigerant supplied to the ozone generator,
the transfer member includes the refrigerant input passage and the refrigerant output passage,
the refrigerant internal member includes a refrigerant input internal member and a refrigerant output internal member;
the refrigerant input internal member is connected to the refrigerant input passage so that the refrigerant can be transmitted through the through-flow passage;
the refrigerant output internal member is connected to the refrigerant output passage so that the refrigerant can be transmitted through the through-flow passage;
Ozone generator. 5. The ozone generator according to claim 2, wherein:
a raw material gas passage for supplying the raw material gas to the discharge space of the ozone generator,
the raw material gas passage is provided within the accommodation space of the generator accommodation member,
the transmission target includes the source gas, the transmission member includes the source gas passage,
the object-transmitting internals include source gas internals;
the source gas internal member is connected to the source gas passage so that the source gas can be transmitted through the through-flow path of the object transmission internal member;
Ozone generator. 2. The ozone generator according to claim 1,
a power supply unit provided outside the generator housing member and supplying power for generating ozone via a power supply line;
a power supply path provided in the accommodation space of the generator accommodation member for supplying the ozone generator with power for generating ozone,
the transmission target includes the ozone generating power, and the transmission member includes the power supply path;
the object transmission internal member includes a bushing internal member;
The bushing internal member is connected to the power supply path so that the ozone generating power can be supplied via the object transmission internal member.
Ozone generator. 7. The ozone generator according to claim 1,
The generator housing member includes:
The base and
a generator cover disposed on a surface of the base;
The storage space is formed on a surface of the base,
The component mounting area includes an area of the base or an area of the generator cover.
Ozone generator. 7. The ozone generator according to claim 1,
The generator accommodating member has a single structure and has the accommodating space therein.
Ozone generator. 1. A method for installing an object-transmitting internal member in an ozone generating device, comprising:
The ozone generator is
an ozone generator that performs an ozone generation process by generating a dielectric barrier discharge in a discharge space and generating ozone gas from a raw material gas supplied to the discharge space;
an ozone gas passage for flowing the ozone gas generated in the discharge space;
a generator housing member that houses the ozone generator and the ozone gas passage within a housing space,
The method for attaching the object transmitting internal member includes:
A method for mounting an object transmission internal member within an opening in a member mounting region of the generator housing member,
(a) providing the object-transmitting internal member;
The opening has a circular shape with an opening diameter in a plan view, and the object transmission internal member has a circular shape with a member diameter in a plan view,
the internal object transmission member has a diameter fluctuation property in which the member diameter is smaller than the opening diameter when the temperature is equal to or lower than a predetermined cooling temperature, and the member diameter is equal to or larger than the opening diameter when the temperature is higher than the predetermined cooling temperature and in a non-cooling temperature range of 0°C or higher,
The method for installing the object transmission internal member is performed after performing step (a).
(b) placing the object transmission internal member, set to a temperature equal to or lower than the predetermined cooling temperature, within the opening of the member mounting region;
(c) setting the temperature of the object transmission internal member to the non-cooling temperature range while the object transmission internal member is disposed within the opening,
Method of installing object-transmitting internal components.