Chlorine dioxide generating device and chlorine dioxide generating method

Abstract

To provide an apparatus for generating chlorine dioxide capable of reducing components to be used.SOLUTION: In an apparatus for generating chlorine dioxide 1, a sodium chlorite solution 5 and fumed silica 7 are mixed in a container 3 to generate chlorine dioxide.SELECTED DRAWING: Figure 2

Description

[Technical field]

[0001] The present invention relates to a chlorine dioxide generating device. and This invention relates to a method for generating chlorine dioxide. [Background technology]

[0002] Conventionally, a chlorine dioxide generator is known that can suppress the odor peculiar to chlorine dioxide gas without reducing the effect of chlorine dioxide gas by a chemical reaction caused by spraying a specific chemical on a specific chemical (see Patent Document 1).

[0003] In this chlorine dioxide generator, a solvent in which a first chemical is dissolved is contained in a container, and a gas such as chlorine dioxide gas is generated by introducing a second chemical into the container from outside the container. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] JP 2018-148983 A Summary of the Invention [Problem to be solved by the invention]

[0005] Incidentally, in the chlorine dioxide generator as disclosed in the above-mentioned Patent Document 1, sodium chlorite is used as the first chemical and citric acid is used as the second chemical. The sodium chlorite is gelled with a thickener or the like, and the citric acid is in a liquid state and mixed with a flavoring supported on a solid support.

[0006] By gelling sodium chlorite in this manner and mixing it with liquid citric acid, chlorine dioxide can be generated for a longer period of time than when liquid sodium chlorite and liquid citric acid are mixed.

[0007] However, in the method of gelling either sodium chlorite or some kind of acidic substance, at least three components are required: sodium chlorite, the acidic substance, and a thickener for gelling.

[0008] The present invention has been made in consideration of the problems inherent in the conventional techniques, and an object of the present invention is to provide a chlorine dioxide generating device and a chlorine dioxide generating method that can reduce the amount of components used. [Means for solving the problem]

[0009] The chlorine dioxide generating method according to the present embodiment is a method for generating chlorine dioxide by using a fumed silica-sodium chlorite mixture, which is a gelled mixture of sodium chlorite and fumed silica. To things Thus, chlorine dioxide is generated.

[0010] In the chlorine dioxide generating method according to the present embodiment, the fumed silica-sodium chlorite mixture is Things After generating chlorine dioxide for a predetermined period of time, an aqueous solution of acid is added to the fumed silica-sodium chlorite mixture to generate more chlorine dioxide.

[0011] The chlorine dioxide generating device according to this embodiment includes a fumed silica-sodium chlorite mixture, which is a gelled mixture of sodium chlorite and fumed silica, a container body having an opening, and a lid for closing the opening of the container body. The fumed silica-sodium chlorite mixture is placed inside the container body. Things and a container for receiving the liquid.

[0012] In addition, in the chlorine dioxide generation device of this embodiment, a threaded portion is provided on the container body, and the lid is also provided with a threaded portion that screws into the threaded portion of the container body. By tightening the threaded portion of the lid against the threaded portion of the container body, the opening of the container body is completely blocked, preventing the chlorine dioxide from leaking out of the container. By loosening the threaded portion of the lid against the threaded portion of the container body, the chlorine dioxide gradually leaks out of the container through the small gap between the threaded portion of the container body and the threaded portion of the lid.

[0013] In addition, in the chlorine dioxide generator of this embodiment, a portion of the lid is made of a material that is permeable to chlorine dioxide and a material that is impermeable to chlorine dioxide, and a shielding material is provided on the lid and covers all of the material that is permeable to chlorine dioxide, and the chlorine dioxide generator is configured so that chlorine dioxide comes out from within the container body through a portion of the lid by peeling the shielding material off the lid.

[0014] In addition, the chlorine dioxide generator according to this embodiment is configured to be able to add an aqueous acid solution to the container after the chlorine dioxide has been generated from the container for a predetermined period of time. Effect of the Invention

[0022] According to the present invention, it is possible to provide a chlorine dioxide generating device and a chlorine dioxide generating method that can reduce the number of components used. [Brief description of the drawings]

[0023] [Figure 1] FIG. 1 is a perspective view of a chlorine dioxide generating device according to a first embodiment. [Diagram 2] FIG. 1 is a cross-sectional view of a chlorine dioxide generating device according to a first embodiment. [Diagram 3] FIG. 2 is a perspective view of a silica storage container of the chlorine dioxide generating apparatus according to the first embodiment. [Figure 4] FIG. 4 is a perspective view showing another example of a silica storage container of the chlorine dioxide generating apparatus according to the first embodiment. [Diagram 5] FIG. 4 is a perspective view showing another example of a silica storage container of the chlorine dioxide generating apparatus according to the first embodiment. [Figure 6] FIG. 4 is a perspective view showing another example of a silica storage container of the chlorine dioxide generating apparatus according to the first embodiment. [Figure 7] FIG. 4 is a perspective view showing another example of a silica storage container of the chlorine dioxide generating apparatus according to the first embodiment. [Figure 8] FIG. 4 is a perspective view showing another example of a silica storage container of the chlorine dioxide generating apparatus according to the first embodiment. [Figure 9] FIG. 1 is a perspective view of a chlorine dioxide generating device according to a second embodiment. [Figure 10] FIG. 1 is a cross-sectional view of a chlorine dioxide generating device according to a second embodiment. [Figure 11] FIG. 11 is an exploded perspective view of a chlorine dioxide generation device according to a second embodiment. [Figure 12] FIG. 11 is a perspective view showing a state where a jetting body is assembled to a container of a chlorine dioxide generating device according to a second embodiment. [Figure 13] FIG. 11 is a front view of a silica storage container of a chlorine dioxide generating device according to a third embodiment. [Figure 14] FIG. 14 is an enlarged cross-sectional view of a main part of FIG. [Figure 15] FIG. 11 is a perspective view showing another example of a silica storage container of the chlorine dioxide generating apparatus according to the third embodiment. [Figure 16] FIG. 15 is an enlarged cross-sectional view of a main portion of FIG. [Figure 17] FIG. 2 is a front view of the sealed structure according to the embodiment. [Figure 18] FIG. 18 is an enlarged cross-sectional view of a main portion of FIG. [Figure 19] 13 is a perspective view of another example of the sealing structure according to the embodiment when a sealing member is used. FIG. [Figure 20] FIG. 20 is an enlarged cross-sectional view of a main portion of FIG. 19. [Figure 21] FIG. 10(a) is a cross-sectional view of a chlorine dioxide generator according to a fourth embodiment, and (b) is a view showing a modified example of the lid of the chlorine dioxide generator shown in (a). DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0024] Hereinafter, the chlorine dioxide generator and the sealed structure according to the present embodiment will be described in detail with reference to the drawings. Note that the dimensional ratios in the drawings are exaggerated for the convenience of explanation and may differ from the actual ratios.

[0025] (Chlorine dioxide generator) The chlorine dioxide generating device according to this embodiment will be described with reference to Figs. 1 to 16.

[0026] (First embodiment) The first embodiment will be described with reference to FIGS. 1 to 8. FIG.

[0027] The chlorine dioxide generator 1 according to this embodiment mixes a sodium chlorite solution 5 and fumed silica 7 in a container 3 to generate chlorine dioxide.

[0028] The fumed silica 7 is contained in a silica container 9, and the silica container 9 is contained within the container 3 in which the sodium chlorite solution 5 is contained.

[0029] Furthermore, the silica storage container 9 has at least one opening 11 that communicates with the outside.

[0030] In addition, the chlorine dioxide generating method includes mixing a sodium chlorite solution 5 with fumed silica 7 to generate chlorine dioxide.

[0031] As shown in FIGS. 1 to 3, a chlorine dioxide generator 1 includes a container 3 and a silica-containing container 9.

[0032] The container 3 includes a container body 13 and a pump body 15 .

[0033] The container body 13 is formed in a cylindrical shape with one end in the length direction open and the other end in the length direction closed at a bottom. The sodium chlorite solution 5 is contained inside the container body 13 from the opening at one end. The outer periphery of the opening side of such a container body 13 is formed in a screw shape, and the pump body 15 is screwed.

[0034] One end of pump body 15 in the longitudinal direction is provided with a push-type pressing part 17. The other end of pump body 15 in the longitudinal direction is provided with a suction pipe 19 that is disposed inside container body 13 and sucks up the chlorine dioxide solution generated in container body 13 by the pressing of pressing part 17. Such pump body 15 sucks up the chlorine dioxide solution from suction pipe 19 by the pressing of pressing part 17 and discharges the chlorine dioxide solution from discharge port 21.

[0035] 3, the silica storage container 9 is formed in a cylindrical shape having openings 11, 11 that are opened so that both ends in the length direction are in communication with the outside. The fumed silica 7 is stored inside the silica storage container 9 from one opening 11. The silica storage container 9 is stored in the container body 13 from the opening on one end side of the container body 13 with the fumed silica 7 stored inside.

[0036] The fumed silica 7 contained in the silica container 9 has acidity and viscosity, and functions as an acidic substance and a viscosity increasing agent. When the silica container 9 is contained in the container 3, the portion of the fumed silica 7 located at the openings 11, 11 comes into contact with the sodium chlorite solution 5, causing a chemical reaction and generating chlorine dioxide. The generated chlorine dioxide dissolves in the sodium chlorite solution 5, forming a chlorine dioxide solution.

[0037] The chlorine dioxide solution thus produced by the chemical reaction between sodium chlorite and fumed silica is sucked up through the suction pipe 19 by the pressure of the pressing portion 17 and discharged from the discharge port 21.

[0038] In this way, by using the sodium chlorite solution 5 and the fumed silica 7 having the dual functions of an acidic substance and a thickener, the number of components required to generate chlorine dioxide can be reduced to two, making it possible to reduce the number of components used.

[0039] Furthermore, by using fumed silica 7, which functions as a thickener, and sodium chlorite solution 5, the chemical reaction can be made to proceed more slowly and for a longer period of time than when sodium chlorite solution 5 and a solution of some acidic substance (e.g., a citric acid solution) are used.

[0040] When the sodium chlorite solution 5 in the container 3 runs out, chlorine dioxide can be generated again by a chemical reaction with the fumed silica 7 by injecting the sodium chlorite solution 5 into the container 3. When the chemical reaction between the fumed silica 7 and the sodium chlorite is completed, new fumed silica 7 can be placed in the silica-containing container 9, or another silica-containing container 9 containing fumed silica 7 can be placed in the container 3.

[0041] Here, the silica storage container is not limited to the silica storage container 9 shown in Fig. 3, and various silica storage containers can be used. For example, the silica storage container 9a shown in Fig. 4 is formed in a cylindrical shape with an opening 11a at one end in the length direction and a closed end at the other end in the length direction.

[0042] The silica storage container 9b shown in Fig. 5 is formed in a cylindrical shape with a small diameter opening 11b at one end in the length direction and a closed end at the other end in the length direction. The silica storage container 9c shown in Fig. 6 is formed in a cylindrical shape with both ends in the length direction closed and a small diameter opening 11c at one location on the side.

[0043] 7 is formed in a cylindrical shape with both ends in the length direction closed, and a cuttable slit 23 is provided on the outer periphery of the central part. When this silica-containing container 9d is folded at the slit 23 by holding both ends in the length direction, the cut portion becomes an opening 11d.

[0044] Furthermore, the silica storage container 9e shown in Fig. 8 is formed in a cylindrical shape with an opening 11e at one end in the length direction and a closed end at the other end in the length direction. The opening 11e of this silica storage container 9e is closed by a blocking member 25 such as Vaseline before use. When such a silica storage container 9e is stored in the container 3 (see Fig. 2) with the opening 11e blocked by the blocking member 25, the blocking member 25 dissolves in the sodium chlorite solution 5 and the opening 11e is opened.

[0045] Fumed silica 7 is stored in such various silica storage containers 9, and the silica storage container 9 is stored in the container 3 that stores the sodium chlorite solution 5. Then, the fumed silica 7 and the sodium chlorite solution 5 are brought into contact with each other at the opening 11 of the silica storage container 9 to cause a chemical reaction, thereby generating chlorine dioxide.

[0046] In addition to the sodium chlorite and fumed silica, some acidic substance, such as citric acid, may be added to the container 3 in order to promote the generation of chlorine dioxide.

[0047] In such a chlorine dioxide generator 1, the sodium chlorite solution 5 and the fumed silica 7 are mixed in the container 3 to generate chlorine dioxide. Therefore, since the sodium chlorite solution 5 is mixed with the fumed silica 7, chlorine dioxide can be generated for a long time compared to the case where liquid sodium chlorite is mixed with some liquid acidic substance. In addition, since the fumed silica 7 has acidity and viscosity increasing properties, the components used can be two components, sodium chlorite and fumed silica.

[0048] Therefore, in such a chlorine dioxide generator 1, chlorine dioxide can be generated from two components, sodium chlorite and fumed silica, and the components used can be reduced.

[0049] Moreover, the fumed silica 7 is contained in a silica container 9, and the silica container 9 is contained in the container 3 that contains the sodium chlorite solution 5. Therefore, the sodium chlorite and the fumed silica can be handled separately, and transportability and exchangeability can be improved.

[0050] Furthermore, the silica-containing container 9 has at least one opening 11 that is connected to the outside. Therefore, by simply housing the silica-containing container 9 in the container 3, the sodium chlorite and the fumed silica can be brought into contact with each other at the opening 11.

[0051] In addition, the chlorine dioxide generating method mixes sodium chlorite solution 5 with fumed silica 7 to generate chlorine dioxide. Therefore, since the sodium chlorite solution 5 is mixed with fumed silica 7, chlorine dioxide can be generated for a long time compared to the case where liquid sodium chlorite is mixed with some liquid acidic substance. In addition, since fumed silica 7 has acidity and viscosity increasing properties, the components used can be two components, sodium chlorite and fumed silica.

[0052] Therefore, in such a chlorine dioxide generation method, chlorine dioxide can be generated using only two components, sodium chlorite and fumed silica, allowing the number of components used to be reduced.

[0053] Second embodiment The second embodiment will be described with reference to FIGS.

[0054] The chlorine dioxide generator 101 according to this embodiment mixes a sodium chlorite solution 5 and fumed silica 7 in a container 103 to generate chlorine dioxide.

[0055] Moreover, the silica storage container 105 is provided integrally with the container 103 .

[0056] Note that the same symbols are used for configurations similar to those in the first embodiment, and explanations of the configurations and functions will be omitted and refer to the first embodiment; however, since the configuration is the same as the first embodiment, the effects obtained are the same.

[0057] As shown in FIGS. 9 to 12, a chlorine dioxide generation device 101 includes a container 103 and a jetting body 107. The jetting body 107 is a nozzle.

[0058] The vessel 103 includes a sodium containing vessel 109 and a silica containing vessel 105 .

[0059] The sodium storage container 109 is formed in a hemispherical shape. In this sodium storage container 109, a cylindrical tube portion 111 that communicates with the upper side and the inside is formed as a continuous single member. The inner circumference of this tube portion 111 is formed in a screw shape, and the ejection body 107 is screwed in. Such a sodium storage container 109 is integrally assembled with the silica storage container 105 to form a storage space for storing the sodium chlorite solution 5 therein.

[0060] The sodium storage container 109 and the silica storage container 105 are integrally assembled by a joining means such as welding, but may be integrally assembled by an engagement means that holds the assembled state by engaging with each other. When an engagement means is used, it is preferable to dispose a seal member such as a seal ring between the sodium storage container 109 and the silica storage container 105.

[0061] The silica storage container 105 is formed in a hemispherical shape so as to be spherical when assembled with the sodium storage container 109. A circular blocking portion 113 is integrally provided on the sodium storage container 109 side of the silica storage container 105, and a storage space for storing the fumed silica 7 is formed inside. The blocking portion 113 is integrally provided by a joining means such as welding.

[0062] An opening 115 that communicates between the outside and the inside is provided in the center of the blocking portion 113 at a position that coincides with the cylindrical portion 111 of the sodium-containing container 109. The opening 115 is blocked by a membrane 117 such as a film. The silica-containing container 105 is integrally assembled with the sodium-containing container 109 with the fumed silica 7 contained therein.

[0063] When the chlorine dioxide generator 101 is used, the container 103 consisting of the sodium containing container 109 and the silica containing container 105 is spherical, and is therefore placed on a base 121 having multiple (here, three) support parts 119.

[0064] In such a container 103, with the sodium storage container 109 and the silica storage container 105 assembled together, the sodium chlorite solution 5 is injected into the sodium storage container 109 from the upper side of the cylindrical portion 111. At this time, since the opening 115 is closed by the membrane 117, the sodium chlorite solution 5 and the fumed silica 7 do not come into contact with each other, and chlorine dioxide is not generated. This membrane 117 is broken by assembling the ejection body 107 to the container 103, and the opening 115 is opened.

[0065] The ejection body 107 includes a through portion 123 and an ejection portion 125 .

[0066] The through part 123 is formed in a hollow cylindrical shape that can be inserted into the tube part 111 and is open on both sides in the length direction, and one side in the length direction is integrally assembled with the jetting part 125. A slit that communicates the outside with the inside is provided on the side of the through part 123. The tip of the other side in the length direction of the through part 123 is a sharp protrusion 127 that can break through the membrane 117 when the jetting body 107 is screwed to the tube part 111. A felt 129 is arranged inside the through part 123 to suck up the chlorine dioxide solution generated in the silica storage container 105 by capillary action.

[0067] When the jetting body 107 is assembled to the container 103, the through-hole 123 is inserted into the cylindrical part 111 and screwed to the cylindrical part 111, whereby the projection 127 breaks through the film 117 and the opening 115 is opened. The opening 115 allows the sodium chlorite solution 5 in the sodium storage container 109 to flow from the opening 115 into the silica storage container 105. The sodium chlorite solution 5 and the fumed silica 7 are then brought into contact with each other and undergo a chemical reaction to generate chlorine dioxide. The chlorine dioxide solution in which chlorine dioxide has been dissolved is sucked up by the felt 129 of the through-hole 123 and sent to the jetting part 125.

[0068] The ejection part 125 has a disk-shaped ultrasonic wave generating part 131 electrically connected to a power source or the like. The container 103 side of the ultrasonic wave generating part 131 is in contact with the felt 129. The ejection part 125 ejects the chlorine dioxide solution sucked up by the felt 129 in the ultrasonic wave generating part 131 from the ejection port 133 in the form of a mist.

[0069] In addition, before the ejection body 107 is assembled to the container 103, it is preferable to screw the cap 135 to the cylindrical portion 111 in a state where the sodium storage container 109 contains the sodium chlorite solution 5 or in a state where the sodium storage container 109 does not contain the sodium chlorite solution 5. By assembling the cap 135 to the container 103 in this manner, it is possible to prevent foreign matter from entering the sodium storage container 109 through the cylindrical portion 111, and it is possible to improve storage stability.

[0070] In such a chlorine dioxide generator 101, the silica storage container 105 is provided integrally with the container 103. Therefore, the silica storage container 105 and the container 103 can be handled integrally, and the number of parts can be reduced.

[0071] Third embodiment The third embodiment will be described with reference to FIGS.

[0072] In the chlorine dioxide generating apparatus according to this embodiment, silica storage containers 203, 203a are joined at a joint 205 to form a storage space 207 in which fumed silica 7 (see FIG. 2) is stored.

[0073] In addition, the same symbols are used for configurations that are similar to other embodiments, and explanations of the configurations and functions are omitted and refer to other embodiments, but since the configuration is the same as other embodiments, the effects obtained are the same.

[0074] 13 and 14, the silica storage container 203 is formed by overlapping two sheet members 209, 209. In this silica storage container 203, the two sheet members 209, 209 are joined together via a joint 205 formed by thermal welding, ultrasonic welding, or bonding with an adhesive, etc., around the periphery of the two sheet members 209, 209 in a state where they are overlapped. A storage space 207 for storing fumed silica 7 is formed in the inside of the silica storage container 203, which is partitioned from the outside by forming the joint 205.

[0075] 15 and 16, the silica storage container 203 may be, for example, a silica storage container 203a composed of a storage member 211 having an opening on one side and a sheet member 213 closing the opening of the storage member 211. In the silica storage container 203a, the opening of the storage member 211 is closed with the sheet member 213, and the storage member 211 and the sheet member 213 are joined to each other via a joint 205 formed around the opening of the storage member 211 by thermal welding, ultrasonic welding, or bonding with an adhesive, for example. Inside the storage member 211 of the silica storage container 203a, the opening of which is closed with the sheet member 213, a storage space 207 for storing fumed silica 7 is formed.

[0076] Here, it is assumed that a liquid substance such as a sodium chlorite solution 5 (see FIG. 2) is stored in a silica storage container 203, 203a having a joint 205 where two members are joined. Such a liquid substance has high fluidity in the storage space 207, and the liquid substance easily permeates into the joint 205. When the liquid substance permeates into the joint 205, there is a possibility that so-called delamination will occur, which will cause the joint 205 to peel off.

[0077] Therefore, fumed silica 7 having a viscosity increasing property is stored in the silica storage container 203, 203a having the joint 205. By storing the fumed silica 7 having a viscosity increasing property in this manner, the fluidity of the fumed silica 7 in the storage space 207 is reduced. Therefore, the fumed silica 7 is less likely to penetrate into the joint 205, and peeling of the joint 205 can be suppressed.

[0078] When such silica storage container 203, 203a is applied to, for example, the chlorine dioxide generator 1 (see FIG. 2), an opening 215 is formed by a jig (not shown). The silica storage container 203, 203a with the opening 215 formed therein is stored in the container 3, and the sodium chlorite solution 5 and the fumed silica 7 come into contact with each other at the opening 215 to generate chlorine dioxide.

[0079] On the other hand, when the silica storage container 203, 203a is applied to, for example, the chlorine dioxide generator 101 (see FIG. 10), it is stored in the sodium storage container 109 as it is, or in the silica storage container 105. In such a silica storage container 203, 203a, by assembling the ejection body 107 to the container 103, the protrusion 127 breaks through the sheet member 209, 213, and an opening 215 is formed. The sodium chlorite solution 5 and the fumed silica 7 come into contact with each other at the opening 215, generating chlorine dioxide.

[0080] In such a chlorine dioxide generator, the silica storage containers 203, 203a are joined at the joint 205 to form a storage space 207 in which the fumed silica 7 is stored. This reduces the fluidity of the fumed silica 7 in the storage space 207. This makes it difficult for the fumed silica 7 to permeate into the joint 205, and thus makes it possible to suppress peeling of the joint 205.

[0081] (closed structure) The sealed structure according to this embodiment will be described with reference to FIGS.

[0082] The sealed structure 301 of this embodiment comprises a sealing member 307 having a sealed space 305 formed therein by being joined at a joint 303, and a liquid content 309 contained in the sealed space 305.

[0083] The contents 309 are then gelled.

[0084] Here, the sealed structure 301 according to the present embodiment is applied to, for example, a sterilization device that mixes a sodium chlorite solution with an acid solution required for generating chlorine dioxide, causes a chemical reaction, and releases chlorine dioxide. When applied to this sterilization device, for example, the sodium chlorite solution and the acid solution are separately stored in a sealing member 307 having the sealed structure 301. Then, when the sterilization device is used, the sealing member 307 is opened, and the respective solutions are mixed and caused to react chemically to generate chlorine dioxide.

[0085] Another application example of the sealed structure 301 according to the present embodiment is, for example, a light-emitting device in which an oxidizing solution and a luminescent solution required for chemical luminescence are mixed and chemically reacted to cause the oxidizing solution to emit light. When applied to this light-emitting device, for example, the oxidizing solution and the luminescent solution are separately contained in a sealing member 307 having the sealed structure 301, and each sealing member 307 is placed inside a light-emitting body that is to emit light. When the light-emitting device is used, an external force is applied from outside the light-emitting body, for example, a needle or the like placed inside the light-emitting body is used to pierce and open each sealing member 307, and the respective solutions are mixed and chemically reacted to cause the oxidizing solution to emit light.

[0086] Furthermore, the sealed structure 301 according to the present embodiment is not limited to mixing solutions that cause the above-mentioned chemical reaction. For example, the sealed structure 301 according to the present embodiment is applied to a deodorizing device that mixes a deodorizing solution having deodorizing performance with a fragrance solution to which a fragrance is added, and releases the deodorizing solution to which a fragrance has been added. When applied to this deodorizing device, for example, the deodorizing solution and the fragrance solution are separately stored in a sealing member 307 having the sealed structure 301. Then, when the deodorizing device is used, the sealing member 307 is opened, and the respective solutions are mixed to add the fragrance to the deodorizing solution.

[0087] In this way, the sealed structure 301 according to this embodiment can be applied when liquid contents 309 applied to various devices are contained in the sealing member 307. Note that the above-mentioned devices are merely application examples, and the sealed structure 301 according to this embodiment can be applied to any purpose, not limited to the above-mentioned devices. The sealed structure 301 according to this embodiment will be described in detail below.

[0088] As shown in FIGS. 17 to 20, the sealing structure 301 includes sealing members 307, 307a and a content 309.

[0089] 17 and 18, the sealing member 307 is formed, for example, by overlapping two sheet members 311, 311. In this sealing member 307, the two sheet members 311, 311 are joined together via a joint 303 formed by thermal welding, ultrasonic welding, or bonding with an adhesive around the periphery while the two sheet members 311, 311 are overlapped. An enclosed space 305 for accommodating contents 309 is formed in the inside of the sealing member 307, which is partitioned off from the outside by forming the joint 303.

[0090] 19 and 20, the sealing member 307 may be, for example, a sealing member 307a composed of a container 313 having an opening on one side and a sheet member 315 closing the opening of the container 313. The sealing member 307a closes the opening of the container 313 with the sheet member 315, and the container 313 and the sheet member 315 are joined to each other via a joint 303 formed around the opening of the container 313 by thermal welding, ultrasonic welding, or bonding with an adhesive, etc. An enclosed space 305 for accommodating contents 309 is formed inside the container 313 whose opening is closed by the sheet member 315 of such a sealing member 307a.

[0091] The contents 309 are, for example, a liquid substance such as the sodium chlorite solution described above. The contents 309 are contained in the sealed space 305 of the sealing members 307, 307a, thereby blocking contact with the outside and maintaining their performance. In the following description, the contents 309 are assumed to be contained in the sealing member 307.

[0092] Incidentally, if the contents 309 are contained in the sealing member 307 while remaining in a liquid state, the fluidity of the contents 309 is high in the sealed space 305, and the contents 309 are likely to permeate into the joint 303. If the contents 309 permeates into the joint 303, there is a possibility that the joint 303 will be peeled off, that is, a so-called delamination will occur.

[0093] Therefore, contents 309 are gelled by adding a gelling agent such as a polymer. By gelling contents 309 in this way, the viscosity of contents 309 can be increased and the fluidity of contents 309 in sealed space 305 can be reduced. Therefore, contents 309 are less likely to penetrate into joint 303, and peeling of joint 303 can be suppressed.

[0094] In such a sealed structure 301, since the contents 309 are gelled, the viscosity of the contents 309 increases, reducing the fluidity of the contents 309 within the sealed space 305, making it difficult for the contents 309 to penetrate into the joint 303.

[0095] Therefore, in such a sealed structure 301, it is possible to suppress the penetration of the contents 309 into the joint portion 303, and to suppress the peeling of the joint portion 303 due to the contents 309.

[0096] (Fourth embodiment) A chlorine dioxide generator 401 according to the fourth embodiment of the present invention is configured to include a container 403 and a fumed silica-sodium chlorite mixture 405, as shown in FIG. 21(a).

[0097] Container 403 is configured to include container body 407 and lid 409. Container body 407 is provided with an opening 411. Lid 409 is for closing opening 411 of container body 407. Fumed silica / sodium chlorite mixture 405 is contained inside container body 407 (container 403).

[0098] The fumed silica-sodium chlorite mixture 405 is a gelled mixture of sodium chlorite and fumed silica. The fumed silica in the fumed silica-sodium chlorite mixture 405 allows the sodium chlorite in the fumed silica-sodium chlorite mixture 405 to generate chlorine dioxide.

[0099] To explain further, the fumed silica / sodium chlorite mixture 405 is designed to generate chlorine dioxide little by little over a long period of time in an environment at normal temperature and pressure. The mechanism by which chlorine dioxide is generated from the fumed silica / sodium chlorite mixture 405 is thought to be that sodium chlorite undergoes chemical reactions such as decomposition to generate chlorine dioxide. Chemical reactions such as decomposition of sodium chlorite are thought to occur when a specific component of the components that make up the fumed silica acts on sodium chlorite. In addition, instead of the fumed silica / sodium chlorite mixture 405, a mixture of pure chlorine dioxide solution mixed with fumed silica (chlorine dioxide solution / fumed silica mixture) may be used. This also makes it possible to delay the volatilization of chlorine dioxide dissolved in the mixture. In other words, the mixture is designed to generate chlorine dioxide little by little over a long period of time in an environment at normal temperature and pressure.

[0100] Container body 407 is provided with a threaded portion (container body threaded portion; for example, a male threaded portion) 413. Lid 409 is also provided with a threaded portion (lid threaded portion; for example, a female threaded portion) 415 which screws into threaded portion 413 of container body 407.

[0101] By tightening the threaded portion 415 of the lid 409 against the threaded portion 413 of the container body 407, the opening 411 of the container body 407 is completely blocked, completely preventing chlorine dioxide from leaking out of the container 403.

[0102] In addition, by loosening the screw part 415 of the lid 409 from the screw part 413 of the container body 407, a small gap is formed between the screw part 413 of the container body 407 and the screw part 415 of the lid 409. The chlorine dioxide is configured to flow out of the container 403 little by little through this small gap.

[0103] The entire container body 407 and the entire lid 409 are made of a material such as synthetic resin or glass that is chemical-resistant and impermeable to gases and liquids.

[0104] 21(b), a film-like part (for example, at least a part) 417 of the lid 409 may be made of a material that is permeable to chlorine dioxide, and the material that is permeable to chlorine dioxide (part 417 of the lid 409; chlorine dioxide permeable part) may be covered with a shielding material (for example, a sheet-like shielding material) 419. The shielding material 419 is made of a material that is not permeable to chlorine dioxide. The shielding material 419 is provided on the lid 409.

[0105] The container may be configured so that, by peeling off the shielding material 419 from the lid 409 , chlorine dioxide comes out from inside the container body 407 through a part 417 of the lid 409 .

[0106] The shielding material 419 is attached integrally to the lid 409 by, for example, an adhesive, so that once the shielding material 419 is peeled off from the lid 409, it cannot be easily restored. A part 417 of the lid 409 is made of a synthetic resin, such as polypropylene, polyethylene, or silicone, which is chemical-resistant and allows only gases such as chlorine dioxide to pass through. In the chlorine dioxide generator 401 shown in Fig. 21(b), the lid 409 may be attached integrally to the container body 407 by a method other than a screw (for example, by adhesion).

[0107] Meanwhile, the chlorine dioxide generator 401 shown in FIG. 21 is configured so that after chlorine dioxide is generated from the container 403 for a predetermined period of time, an aqueous solution of an acid (for example, citric acid) can be added to the container 403.

[0108] In other words, by generating chlorine dioxide from container 403 for a predetermined period of time, when the amount of chlorine dioxide generated (amount generated per certain time period) becomes less than a predetermined value, an aqueous acid solution can be added to container body 407.

[0109] As a result, chlorine dioxide is further generated from the fumed silica-sodium chlorite mixture 405 in the container 403. In other words, the amount of chlorine dioxide generated (amount generated per certain time period) can be increased by the added acid beyond the above-mentioned reduced predetermined value.

[0110] Here, the usage of the chlorine dioxide generator 401 shown in Fig. 21(a) will be described. In the initial state (new state), a new fumed silica-sodium chlorite mixture 405 is placed inside the container 403, and the lid 409 completely closes the opening 411 of the container body 407.

[0111] In the above initial state, when the lid 409 is slightly rotated relative to the container body 407 to loosen the screwed state between the screw part 413 of the container body 407 and the screw part 415 of the lid 409, a small gap is formed between the screw part 413 and the screw part 415. Through this small gap, the chlorine dioxide in the container 403 gradually comes out to the outside of the container 403, and sterilization and disinfection are performed around the container 403. This is the usage state of the chlorine dioxide generator 401.

[0112] After leaving chlorine dioxide generator 401 in use for a predetermined period of time, chlorine dioxide generator 401 can be stored by tightening screw portion 415 of lid 409, preventing chlorine dioxide from leaking out of container 403.

[0113] Furthermore, when the amount of chlorine dioxide generated per unit time becomes less than a predetermined value by generating chlorine dioxide from container 403 for a predetermined period of time, lid 409 is removed from container body 407. Next, an aqueous solution of citric acid is poured into container body 407 from opening 411 of container body 407, and lid 409 is placed on container body 407.

[0114] Next, the mode of use of chlorine dioxide generator 401 shown in Fig. 21(b) will be described. In the initial state (new state), new fumed silica-sodium chlorite mixture 405 is placed inside container 403, lid 409 completely closes opening 411 of container body 407, and shielding material 419 is provided on lid 409. Furthermore, shielding material 419 covers part 417 of lid 409 entirely, so that chlorine dioxide does not leak out of container 403.

[0115] In the above initial state, when the shielding material 419 is peeled off from the lid 409 and removed, the chlorine dioxide in the container 403 flows out little by little to the outside of the container 403 through a part 417 of the lid 409. Then, the chlorine dioxide generator 401 is ready for use.

[0116] 21(b), a removable shield (not shown) may be provided on lid 409. Then, even after shielding material 419 is peeled off and removed from lid 409, the shield may remain on lid 409, so that part 417 of lid 409 is entirely covered by the shield. Then, part 417 of lid 409 is entirely covered by the shield, so that chlorine dioxide may not escape to the outside of container 403.

[0117] In the chlorine dioxide generator 401 shown in FIG. 21(b), citric acid is introduced into the container 403 in the same manner as in the chlorine dioxide generator 401 shown in FIG. 21(a).

[0118] According to the chlorine dioxide generator 401, chlorine dioxide can be generated using only the fumed silica-sodium chlorite mixture 405, so chlorine dioxide can be obtained more easily and with a minimum of by-products compared to the case where an acid is used. That is, chlorine dioxide can be obtained even if the components used are reduced.

[0119] Furthermore, according to chlorine dioxide generator 401, chlorine dioxide can be further generated by adding an aqueous solution of citric acid to fumed silica / sodium chlorite mixture 405, so that chlorine dioxide can be obtained for a longer period of time. Even after chlorine dioxide has been generated for a predetermined period of time, sodium chlorite remains in fumed silica / sodium chlorite mixture 405. This remaining sodium chlorite can be used without waste to obtain chlorine dioxide.

[0120] In addition, according to the chlorine dioxide generator 401, the fumed silica-sodium chlorite mixture 405 is contained in the container body 407, and the opening 411 can be opened and closed with the lid 409, so that chlorine dioxide can be obtained only when necessary.

[0121] 21(a), the opening 411 of the container body 407 is completely closed by tightening the screw part 415 of the lid 409 to the screw part 413 of the container body 407. This completely prevents chlorine dioxide from leaking out of the container 403.

[0122] Furthermore, by loosening the screw portion 415 of the lid 409 from the screw portion 413 of the container body 407, a small gap is formed between the screw portion 413 of the container body 407 and the screw portion 415 of the lid 409. Chlorine dioxide flows out of the container 403 little by little through this small gap. This allows an operation to easily obtain chlorine dioxide only when necessary.

[0123] 21(b) is configured so that, by peeling off the shielding material 419 from the lid 409, chlorine dioxide comes out from inside the container body 407 through a part 417 of the lid 409. This makes it easy to identify whether the chlorine dioxide generator 401 is new or not when using the chlorine dioxide generator 401.

[0124] The above description of the fourth embodiment may be understood as an invention of a chlorine dioxide generating method.

[0125] In other words, the method may be understood as a chlorine dioxide generating method in which chlorine dioxide is generated from chlorine and oxygen, which are components of sodium chlorite, using the fumed silica-sodium chlorite mixture 405.

[0126] Furthermore, the method may be understood as a chlorine dioxide generating method in which, after chlorine dioxide is generated for a predetermined period of time, an aqueous solution of an acid is added to the fumed silica-sodium chlorite mixture 405 to further generate chlorine dioxide.

[0127] Although the present embodiment has been described above, the present embodiment is not limited to this, and various modifications are possible within the scope of the gist of the present embodiment.

[0128] For example, the silica container of the first embodiment may be accommodated in the silica container of the second embodiment, and the membrane may be broken by the protrusion when the ejection body is attached to the container. In this case, the sodium chlorite solution flows into the silica container of the second embodiment by breaking the membrane, and the fumed silica accommodated in the silica container of the first embodiment comes into contact with the sodium chlorite through the opening, generating chlorine dioxide. [Explanation of symbols]

[0129] 1, 101, 401 Chlorine dioxide generator 3, 103 containers 5. Sodium chlorite solution 7. Fumed Silica 9, 9a, 9b, 9c, 9d, 9e, 105, 203, 203a Silica storage vessel 11, 11a, 11b, 11c, 11d, 11e, 115, 215 opening 205 Joint 207 Containment Space 301 Sealed structure 303 Joint 305 Closed space 307,307a Sealing member 309 Contents 405 Fumed silica-sodium chlorite mixture 411 Opening (Opening of container body) 407 Container body 409 Lid 403 Container 413 Screw part (Container body screw part) 415 Screw part (lid screw part) 417 Part of the lid (chlorine dioxide permeable part) 419 Shielding material

Claims

1. A method for generating chlorine dioxide, comprising the steps of: generating chlorine dioxide using a fumed silica-sodium chlorite mixture, which is a gelled mixture of sodium chlorite and fumed silica;

2. 2. The method for generating chlorine dioxide according to claim 1, further comprising the steps of: generating chlorine dioxide from the fumed silica-sodium chlorite mixture for a predetermined period of time; adding an aqueous solution of an acid to the fumed silica-sodium chlorite mixture to further generate chlorine dioxide.

3. a fumed silica-sodium chlorite mixture, which is a gelling mixture of sodium chlorite and fumed silica; A container including a container body having an opening and a lid for closing the opening of the container body, the container body containing the fumed silica / sodium chlorite mixture; A chlorine dioxide generating device having the above structure.

4. The container body is provided with a screw portion, The lid also has a threaded portion that is screwed into the threaded portion of the container body, The chlorine dioxide generating device according to claim 3, wherein by fully tightening the threaded portion of the lid against the threaded portion of the container body, the opening of the container body is completely blocked, thereby preventing the chlorine dioxide from leaking out of the container, and by loosening the threaded portion of the lid against the threaded portion of the container body, the chlorine dioxide gradually leaks out of the container through a small gap between the threaded portion of the container body and the threaded portion of the lid.

5. A portion of the lid is made of a material that is permeable to chlorine dioxide, A shielding material is provided on the cover and covers all of the material that is permeable to chlorine dioxide, the shielding material being made of a material that is impermeable to chlorine dioxide; The chlorine dioxide generator according to claim 3, wherein the shielding material is peeled off from the lid, so that chlorine dioxide comes out from within the container body through a part of the lid.

6. The chlorine dioxide generating apparatus according to any one of claims 3 to 5, which is configured so that an aqueous solution of an acid can be added to the container after the chlorine dioxide is generated from the container for a predetermined period of time.

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