Fluid ultraviolet light processing device

Abstract

To provide an apparatus for treating fluid that can increase the effectiveness of sterilization and other treatments for fluid.SOLUTION: An apparatus for treating fluid includes (a) a mounting member having (a1) a first channel section forming a first flow path extending in a first direction, and (a2) a light source arrangement section located outside the first channel section on the side of the first channel section, (b) one or more light sources arranged in the light source arrangement section and emitting ultraviolet light traveling in the first direction; and (c) a flow tube having a second channel section that forms a second flow path connected to the first flow path, wherein ultraviolet light emitted from the light source is irradiated into the second flow path.SELECTED DRAWING: Figure 1

Description

Technical Field

[0001] The present disclosure relates to a fluid ultraviolet light treatment device.

Background Art

[0002] For example, Patent Document 1 discloses a fluid sterilization device having a channel member forming a first channel and a light source that irradiates ultraviolet light to the fluid flowing in the first channel, wherein the direction in which the light source emits ultraviolet light and the direction in which the fluid flows in the first channel are substantially opposite.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] An object of the present disclosure is to provide a fluid ultraviolet light treatment device capable of enhancing treatment effects such as sterilization of fluids.

Means for Solving the Problems

[0005] According to one aspect of the present disclosure, a fluid ultraviolet light treatment device includes a mounting member having a first channel portion forming a first channel extending in a first direction and a light source arrangement portion located outside the first channel portion on a side of the first channel portion, one or more light sources arranged in the light source arrangement portion and emitting ultraviolet light traveling in the first direction, and a channel tube having a second channel portion forming a second channel connected to the first channel, wherein the ultraviolet light emitted from the light source is irradiated to the second channel.

Effects of the Invention

[0006] According to the present disclosure, it is possible to provide a fluid ultraviolet light treatment device capable of enhancing treatment effects such as sterilization of fluids. [Brief explanation of the drawing]

[0007] [Figure 1] This is a cross-sectional view of the fluid ultraviolet light processing apparatus according to the first embodiment. [Figure 2] This is a cross-sectional view along line II-II in Figure 1. [Figure 3] This is a cross-sectional view of a fluid ultraviolet light processing apparatus according to a second embodiment. [Figure 4] This is a cross-sectional view of a fluid ultraviolet light processing apparatus according to a third embodiment. [Figure 5] This is a cross-sectional view of the fluid ultraviolet light processing apparatus according to the fourth embodiment. [Figure 6] This is a cross-sectional view along the line VI-VI in Figure 5. [Modes for carrying out the invention]

[0008] The embodiments will be described below with reference to the drawings. In each drawing, the same components are denoted by the same reference numerals. Note that each drawing is a schematic representation of the embodiment, and therefore the scale, spacing, or positional relationship of each component may be exaggerated, or some components may be omitted from the illustration. In addition, cross-sectional views may show only the cut surface.

[0009] [First Embodiment] As shown in Figure 1, the fluid ultraviolet light processing apparatus 1 of the first embodiment comprises a mounting member 10, one or more light sources 40, and a flow channel tube 20.

[0010] <Mounting components> The mounting member 10 has a first flow channel section 11 and a light source placement section 12. The mounting member 10 is, for example, a metal member. The first flow channel section 11 and the light source placement section 12 are formed integrally. Alternatively, the first flow channel section 11 and the light source placement section 12 may be separate components.

[0011] The first flow channel section 11 forms a first flow channel 11a extending in a first direction d1. The first flow channel 11a can be a path through which a fluid such as a liquid or gas flows. The first flow channel section 11 is, for example, a cylindrical section, and the inside of the cylindrical section becomes the first flow channel 11a.

[0012] The light source placement section 12 is provided on the mounting member 10 to the side of the first flow channel section 11. The light source placement section 12 is located to the side of the first flow channel section 11 and on the outside of the first flow channel section 11. The side of the first flow channel section 11 is a second direction d2 that is perpendicular to the first direction d1. The light source placement section 12 has a space in which a light source 40 can be placed.

[0013] Figure 2 is a cross-sectional view along line II-II in Figure 1. As shown in Figure 2, when viewed from the first direction d1, the light source arrangement section 12 surrounds the first flow channel section 11. When viewed from the first direction d1, the light source arrangement section 12 has an annular light source arrangement surface 12a that surrounds the first flow channel section 11. The light source arrangement surface 12a is a plane that extends in the second direction d2. The light source arrangement surface 12a is a plane perpendicular to the first direction d1.

[0014] The mounting member 10 further has a plurality of fins 14 located in the first flow channel 11a. As shown in Figure 2, the plurality of fins 14 extend from the inner wall of the first flow channel 11 into the first flow channel 11a. Also, as shown in Figure 1, each fin 14 extends in the first direction d1. The plurality of fins 14 are provided at equal intervals on the inner wall of the first flow channel 11.

[0015] A light source 40 is placed in the light source placement section 12. As shown in Figure 2, multiple light sources 40 can be placed in the light source placement section 12. When viewed from the first direction d1, multiple light sources 40 are placed so as to surround the first flow channel section 11. Multiple light sources 40 are placed at equal intervals. Multiple light sources 40 are placed at equal intervals on concentric circles. Multiple light sources 40 are placed at equal distances from the first flow channel section 11.

[0016] The mounting member 10 has an outer peripheral portion 15 that forms the outermost surface of the mounting member 10. The outer peripheral portion 15 is a cylindrical portion located outside the cylindrical portion that constitutes the first flow path portion 11. The cylindrical portion of the first flow path portion 11 and the cylindrical portion of the outer peripheral portion 15 may be referred to as an inner cylindrical portion and an outer cylindrical portion, respectively.

[0017] The light source arrangement portion 12 is located between the first flow path portion 11 and the outer peripheral portion 15 when viewed from the first direction d1. The light source arrangement portion 12 and the outer peripheral portion 15 are formed of a material that blocks ultraviolet light. Thereby, leakage of ultraviolet light from the light source 40 to the side of the outer peripheral portion 15 can be prevented.

[0018] The first flow path portion 11 forms a first protruding portion 11b that protrudes in the first direction d1 from the light source arrangement surface 12a. The outer peripheral portion 15 forms a second protruding portion 15a that protrudes in the first direction d1 from the light source arrangement surface 12a. The first protruding portion 11b protrudes in the first direction d1 more than the second protruding portion 15a. The inner cylindrical portion protrudes in the first direction d1 more than the outer cylindrical portion.

[0019] The second protruding portion 15a protrudes in the first direction d1 from the light source arrangement surface 12a by 1 mm or more and 5 mm or less. Thereby, contact between the light source 40 and the flow path tube 20 can be prevented. The first protruding portion 11b protrudes in the first direction d1 from the second protruding portion 15a by 5 mm or more and 30 mm or less. Thereby, the stability of the connection with the flow path tube 20 is maintained.

[0020] The fins 14 are provided so as to extend to the first protruding portion 11b. Regarding the first direction d1, one tip of the fins 14 is located between the tip of the first protruding portion 11b and the tip of the second protruding portion 15a. Also, the length of the fins 14 in the first direction d1 is greater than the length by which the second protruding portion 15a protrudes in the first direction d1.

[0021] <Light source> The light source 40 has a first surface 41 and a second surface 42 located on the opposite side of the first surface 41. The first surface 41 is the light-emitting surface, and the light source 40, positioned on the light source placement surface 12a, emits ultraviolet light that travels in a first direction d1 from the first surface 41. The peak wavelength of the ultraviolet light emitted by the light source 40 is, for example, between 200 nm and 400 nm. However, the peak wavelength of the ultraviolet light emitted by the light source 40 is not limited to this wavelength range. The light source 40 includes a light-emitting element. For example, an LED (Light Emitting Diode) or an LD (Laser Diode) can be used as the light-emitting element. The second surface 42 of the light source 40 is in contact with the light source placement surface 12a of the light source placement section 12.

[0022] <Flow channel pipe> The flow channel pipe 20 has a second flow channel section 21 extending in a first direction d1. The second flow channel section 21 forms a second flow channel 21a extending in the first direction d1. The second flow channel section 21 forms a second flow channel 21a that is connected to the first flow channel 11a in the first direction d1. For example, the first protrusion 11b of the first flow channel section 11 of the mounting member 10 fits into the second flow channel 21a, thereby connecting the first flow channel 11a and the second flow channel 21a.

[0023] The flow channel tube 20 has a light guide member 22 located on the side (second direction d2) of the second flow channel 21a and outside the second flow channel 21a. The light guide member 22 extends in the first direction d1. The shape of the light guide member 22 is, for example, cylindrical. In the example shown in Figure 1, the light guide member 22 also functions as the second flow channel section 21, and a circular second flow channel 21a is formed inside the cylindrical light guide member 22.

[0024] The light guide member 22 is made of a material that is transparent to the wavelength of ultraviolet light emitted by the light source 40. Examples of materials that can be used for the light guide member 22 include silicone, fluororesin, or glass materials such as quartz (SiO2). The light guide member 22 has a light incident surface 23, a light extraction surface 24, and a reflective surface 25.

[0025] The light incident surface 23 faces the first surface 41, which is the light output surface of the light source 40, in the first direction d1. The light incident surface 23 is formed in an annular shape facing the light source arrangement surface 12a in the first direction d1. The first surface 41 of each of the multiple light sources 40 arranged along the circumferential direction of the annular light source arrangement surface 12a faces the annular light incident surface 23.

[0026] The light extraction surface 24 is provided on the outer surface of the second channel 21a. The light extraction surface 24 is adjacent to the second channel 21a in the second direction d2. In the first direction d1, the light extraction surface 24 extends along the second channel 21a.

[0027] The reflective surface 25 is located outside the light extraction surface 24 (on the opposite side of the light extraction surface 24 in the second direction d2) and faces the light extraction surface 24 in the second direction d2. In the first direction d1, the reflective surface 25 extends along the second flow path 21a.

[0028] Ultraviolet light emitted from the first surface 41 of the light source 40 is irradiated into the second channel 21a. The ultraviolet light emitted from the first surface 41 of the light source 40 is incident on the light guide member 22 from the light incident surface 23, and the light incident on the light guide member 22 is guided in the first direction d1 while undergoing multiple reflections between the light extraction surface 24 and the reflective surface 25, and ultraviolet light that does not satisfy the total internal reflection condition with respect to the light extraction surface 24 is irradiated from the light extraction surface 24 into the second channel 21a. In this way, ultraviolet light emitted from the light source 40 can be irradiated onto the fluid flowing through the second channel 21a.

[0029] The length of the light guide member 22 in the first direction d1 is preferably 5 cm or more and 130 cm or less. By setting it to 5 cm or more, multiple reflected ultraviolet light can be delivered to a position far from the light source 40, and the range in which ultraviolet light is irradiated into the second channel 21a can be expanded. Also, considering cost-effectiveness, it may be preferable to set it to 50 cm or less.

[0030] By arranging multiple light sources 40 along the annular light incident surface 23, the unevenness of the light guided within the light guide member 22 in the plane parallel to the light incident surface 23 can be reduced. As a result, the irradiation efficiency from all directions to the fluid flowing from the light guide member 22 through the second channel 21a can be increased, and the ultraviolet light treatment effect on the fluid can be enhanced.

[0031] The length (diameter) of the second channel 21a as viewed from the first direction d1 is preferably 20 mm or more and 100 mm or less. A length of 20 mm or more allows for efficient processing of the fluid flowing through the channel. A length of 100 mm or less allows sufficient ultraviolet light to be irradiated to the center of the second channel 21a.

[0032] It is preferable to arrange a light diffusion portion 26 on the light extraction surface 24 so that the light guided within the light guide member 22 can easily diffuse and irradiate the fluid flowing through the second channel 21a from the light extraction surface 24. The refractive index of the light diffusion portion 26 is selected according to the refractive index of the fluid flowing through the second channel 21a. Furthermore, it is preferable to arrange a scattering portion 27 including a plurality of convex and / or concave portions on the surface of the light diffusion portion 26 that is located within the light guide member 22.

[0033] By providing a light-shielding member 31 on the outer surface of the light-guide member 22, leakage of ultraviolet light to the side of the flow channel 20 can be prevented. For example, the light-shielding member 31 is a cylindrical member that surrounds the outer surface of the cylindrical light-guide member 22. By providing a reflective film (e.g., an aluminum film) on the inner surface of the light-shielding member 31, the reflectivity of the reflective surface 25 can be increased. In addition, by providing a layer 32 of a material with a lower refractive index than the light-guide member 22 (e.g., air) between the outer surface of the light-guide member 22 and the inner surface of the light-shielding member 31, the reflectivity of the reflective surface 25 can be increased.

[0034] The fluid ultraviolet light treatment device 1 treats fluids such as liquids and gases by irradiating them with ultraviolet light. For example, by irradiating water with ultraviolet light, the number of bacteria and viruses in the water after treatment can be reduced compared to before treatment.

[0035] The end of the first channel section 11 opposite to the end of the first projection 11b connected to the second channel section 21 is connected directly or via a joint member to the first piping upstream (or downstream) of the fluid ultraviolet light processing device 1. The end of the second channel section 21 opposite to the end connected to the first channel 11a is connected directly or via a joint member to the second piping downstream (or upstream) of the fluid ultraviolet light processing device 1. When fluid flows from the first piping to the second piping, the fluid flows from the first piping into the first channel 11a, from the first channel 11a into the second channel 21a, and out of the second channel 21a into the second piping. When fluid flows from the second piping to the first piping, the fluid flows from the second piping into the second channel 21a, from the second channel 21a into the first channel 11a, and out of the first channel 11a into the first piping.

[0036] Ultraviolet light emitted from the light source 40 in a first direction d1 and incident into the light guide member 22 from the light incident surface 23 is guided along the second channel 21a within the light guide member 22, which extends along the second channel 21a, and is irradiated onto the fluid flowing through the second channel 21a from the light extraction surface 24. The light extraction surface 24 extends along the second channel 21a, so the fluid can continue to receive irradiation with ultraviolet light while flowing through the second channel 21a. This makes it possible to increase the integrated illuminance of the fluid flowing inside the fluid ultraviolet light processing device 1 due to ultraviolet light, and to enhance the processing effect of ultraviolet light on the fluid.

[0037] The density of the scattering portion 27 can be changed in the first direction d1. For example, by making the density of the scattering portion 27 in a region relatively far from the light source 40 higher than the density of the scattering portion 27 in a region relatively close to the light source 40, the decrease in the amount of irradiation from the light extraction surface 24 to the second channel 21a can be suppressed in the region relatively far from the light source 40.

[0038] Furthermore, since the mounting member 10 has a first flow channel 11, and a part of the mounting member 10 is incorporated into the flow channel, the mounting member 10 is cooled by the fluid flowing through the first flow channel 11a, and thus the light source 40 can be cooled. This makes it possible to suppress the decrease in luminous efficiency due to the heat generated when the light source 40 emits light. The heat emitted by the light source 40 is conducted to the mounting member 10 from the second surface 42 in contact with the light source placement surface 12a, and the heat conducted to the mounting member 10 is dissipated into the fluid flowing through the first flow channel 11a. At this time, by arranging fins 14 in the first flow channel 11a, the heat dissipation efficiency from the mounting member 10 to the fluid flowing through the first flow channel 11a can be increased.

[0039] The flow channel 20 can be attached to and detached from the mounting member 10. For example, the flow channel 20 can be attached to and detached from the mounting member 10 by screwing it in and fitting it. This makes maintenance of the mounting member 10, the light source 40, and the flow channel 20 easier. By removing the flow channel 20 from the mounting member 10, the light source 40, which is located in the light source placement section 12 of the mounting member 10, can be exposed to the outside of the mounting member 10.

[0040] [Second Embodiment] Figure 3 is a cross-sectional view of a fluid ultraviolet light processing apparatus 2 according to a second embodiment of the present disclosure.

[0041] The fluid ultraviolet light processing apparatus 2 of the second embodiment comprises a mounting member 10, one or more light sources 40, and a flow channel tube 50. The configuration of the mounting member 10 and the light sources 40 is the same as in the first embodiment.

[0042] The flow channel pipe 50 has a second flow channel section 51 extending in a first direction d1. The second flow channel section 51 has a side surface section 58 extending in the first direction d1 and an end surface section 57 located at one end of the side surface section 58 in the first direction d1. For example, the shape of the end surface section 57 as viewed from the first direction d1 is circular. The second flow channel section 51 forms a second flow channel 51a that is connected to the first flow channel 11a in the first direction d1.

[0043] Furthermore, the flow channel pipe 50 has a first opening 52 and a second opening 56. The first opening 52 is connected to the second flow channel section 51. The second opening 56 is connected to the second flow channel section 51. The first opening 52 is located on the side surface 58 of the second flow channel section 51, which constitutes the side surface of the flow channel pipe 50, and is connected to the second flow channel 51a. The second opening 56 is located on the opposite side of the end surface 57 in the first direction d1, and is connected to the first flow channel 11a and the second flow channel 51a.

[0044] The second channel 51a has a region a1 facing the light source placement section 12. In the second direction d2, a recess 55 is provided between the regions a1. For example, the first channel 11a and the second channel 51a are connected when a part of the first channel section 11 of the mounting member 10 fits into the recess 55 of the channel tube 50. The second opening 56 penetrates the recess 55 in the first direction d1.

[0045] Furthermore, the flow channel 50 has a light-transmitting member 53 that faces the first surface 41, which is the light-emitting surface of the light source 40, in the first direction d1. The light-transmitting member 53 is adjacent to the region a1 of the second flow channel 51a in the first direction d1.

[0046] The light-transmitting member 53 is made of a material that is transparent to the wavelength of ultraviolet light emitted by the light source 40. Examples of materials for the light-transmitting member 53 include inorganic materials selected from the group consisting of quartz glass, borosilicate glass, calcium fluoride glass, aluminoborosilicate glass, oxynitride glass, chalcogenide glass, and sapphire.

[0047] The end of the first channel 11a opposite to the end connected to the second channel 51a is connected directly or via a joint member to the first piping upstream (or downstream) of the fluid ultraviolet light processing device 2. The first opening 52 of the channel pipe 50 is connected directly or via a joint member to the second piping downstream (or upstream) of the fluid ultraviolet light processing device 2. When fluid flows from the first piping to the second piping, the fluid flows from the first piping into the first channel 11a, from the first channel 11a into the second channel 51a through the second opening 56, and out of the first opening 52 into the second piping. When fluid flows from the second piping to the first piping, the fluid flows from the second piping into the second channel 51a through the first opening 52, from the second channel 51a into the first channel 11a through the second opening 56, and out of the first channel 11a into the first piping.

[0048] Ultraviolet light emitted from the first surface 41 of the light source 40 in the first direction d1 passes through the light-transmitting member 53 and irradiates the fluid in the second channel 51a. The first opening 52 of the channel tube 50 is not located on the extension of the first channel 11a extending in the first direction d1, so the fluid does not flow straight between the first channel 11a and the first opening 52. For example, the central axis of the first channel 11a and the central axis of the first opening 52 intersect. In the example shown in Figure 3, the central axis of the first channel 11a and the central axis of the first opening 52 are perpendicular. Therefore, the fluid flowing from the first channel 11a into the second channel 51a, or the fluid flowing from the first opening 52 into the second channel 51a, can be allowed to remain in the second channel 51a. The fluid can be made to wrap around to the region a1 facing the light source 40 in the second channel 51a. Region a1 is an area near the light source 40 that is irradiated with strong light, and the fluid can be kept in region a1 for a predetermined time. This increases the integrated illuminance of the fluid in the second channel 51a due to ultraviolet light, thereby enhancing the processing effect of ultraviolet light on the fluid.

[0049] In the second embodiment as well, the light source 40 is cooled by the fluid flowing through the first channel 11a, thereby suppressing the decrease in luminous efficiency due to heat generated by the light emission of the light source 40.

[0050] For example, by screwing a portion of the first flow path portion 11 of the mounting member 10 into the recess 55 of the flow path tube 50, the flow path tube 50 can be detachably attached to the mounting member 10. This makes maintenance of the mounting member 10, the light source 40, and the flow path tube 50 easier. By removing the flow path tube 50 from the mounting member 10, the light source 40, which is located in the light source placement portion 12 of the mounting member 10, can be exposed to the outside of the mounting member 10.

[0051] The mounting member 10 can be connected to the other flow channel pipes 20 and 50 in the first flow channel section 11 on the opposite side of the flow channel pipes 20 and 50 (the left side in Figures 1 and 3).

[0052] [Third Embodiment] Figure 4 is a cross-sectional view of a fluid ultraviolet light processing apparatus 3 according to a third embodiment of the present disclosure.

[0053] Flow tubes 20 are connected to both ends of the first flow channel section 11 in the first direction d1. The first flow channel 11a is located between two second flow channels 21a in the first direction d1, and the first flow channel 11a is connected to the second flow channels 21a at both ends in the first direction d1. Fluid flows from one second flow channel 21a through the first flow channel 11a to the other second flow channel 21a.

[0054] The mounting member 10 has two light source placement sections 12 arranged symmetrically in a first direction d1. The mounting member 10 has light source placement surfaces 12a facing opposite directions in the first direction d1. The light source has a first light source 40A and a second light source 40B. The first light source 40A faces the light guide member 22 of one of the flow channel tubes 20 (right side in Figure 4). The second light source 40B faces the light guide member 22 of the other flow channel tube 20 (left side in Figure 4). The first surface 41 (light emission surface) of the first light source 40A and the first surface 41 (light emission surface) of the second light source 40B face opposite directions in the first direction d1.

[0055] Ultraviolet light emitted from the first surface 41 of the first light source 40A is irradiated onto the fluid flowing through the second channel 21a via the light guide member 22 of one channel tube 20 (right side in Figure 4). Ultraviolet light emitted from the first surface 41 of the second light source 40B is irradiated onto the fluid flowing through the second channel 21a via the light guide member 22 of the other channel tube 20 (left side in Figure 4). Compared to the case where the channel tubes 20 are connected to only one side in the first direction d1 of the mounting member 10, the cumulative illuminance received by the fluid flowing through the second channel 21a by ultraviolet light can be increased, and the processing effect of ultraviolet light on the fluid can be further enhanced.

[0056] Furthermore, the flow channel pipes 50 of the second embodiment can also be connected to both ends of the mounting member 10 in the first direction d1.

[0057] [Fourth Embodiment] Figure 5 is a cross-sectional view of the fluid ultraviolet light processing apparatus 4 according to the fourth embodiment. Figure 6 is a cross-sectional view along the line VI-VI in Figure 5.

[0058] The fluid ultraviolet light processing apparatus 4 of the fourth embodiment comprises a mounting member 10', a flow channel tube 50, and a flow channel conversion member 60. The flow channel tube 50 has the same configuration as the flow channel tube 50 of the second embodiment. The mounting member 10' differs in configuration from the mounting member 10 of the above embodiment in that the first protrusion 11b and the second protrusion 15a protrude only on one side (the flow channel tube 50 side) in the first direction d1.

[0059] The flow path conversion member 60 is positioned on the side of the mounting member 10' opposite to the side connected to the flow path pipe 50. In the first direction d1, the mounting member 10' is positioned between the flow path conversion member 60 and the flow path pipe 50.

[0060] As shown in Figure 6, when viewed from the first direction d1, the flow path conversion member 60 is, for example, a circular member. When viewed from the first direction d1, the central part C of the flow path conversion member 60 is located in a position that overlaps with the first flow path 11a. The flow path conversion member 60 is connected to the mounting member 10' and forms a third flow path 61 and a fourth flow path 62. The third flow path 61 is formed by the flow path conversion member 60 and the mounting member 10'. The third flow path 61 extends in a direction different from the first direction d1. The third flow path 61 extends in a direction perpendicular to the first direction d1.

[0061] The flow path conversion member 60 forms multiple third flow paths 61 that branch off from the first flow path 11a. For example, when viewed from the first direction d1, the multiple third flow paths 61 extend radially from the central part C of the flow path conversion member 60. One end of each third flow path 61 is connected to the first flow path 11a at the central part C of the flow path conversion member 60. When viewed in a plane perpendicular to the flow path, the area of ​​each of the multiple third flow paths 61 is smaller than the area of ​​the first flow path 11a.

[0062] Viewed from the first direction d1, each of the multiple third channels 61 overlaps with a light source 40 placed on the light source placement surface 12a. In other words, each third channel 61 is provided on the light source placement surface 12a so as to pass directly beneath the multiple coincident light sources 40. The number of third channels 61 branching off from the first channel 11a is the same as the number of light sources 40 placed on the light source placement surface 12a. By providing the third channels 61 in this way, the heat dissipation effect from the heat generated by the light sources 40 can be improved by utilizing the fluid flowing through the third channels 61.

[0063] The fourth channel 62 is connected to the other end of the third channel 61 and extends in the first direction d1. Each of the multiple third channels 61 is connected to a separate fourth channel 62. Viewed from the first direction d1, the multiple fourth channels 62 are arranged, for example, at equal intervals along the outer circumference of the channel conversion member 60, at a position on the outer circumference side of the center C. The end of the fourth channel 62 opposite to the end connected to the third channel 61 is exposed to the outside of the channel conversion member 60 and connected to external piping.

[0064] Viewed from the first direction d1, the connection point between the third channel 61 and the fourth channel 62 is located outside the light source 40 and inside the second protrusion 15a. This allows the light source placement section 12 to have contact with the channels over a wide area, thereby improving the heat dissipation effect.

[0065] In the fourth embodiment, the fluid flows sequentially from the first opening 52 of the flow channel pipe 50 through the second flow channel 51a, the first flow channel 11a, the third flow channel 61, and the fourth flow channel 62. The fluid that has flowed through the first flow channel 11a along the first direction d1 changes direction in the third flow channel 61 to a direction different from the first direction d1 (a direction along a plane perpendicular to the first direction d1). By changing the direction of the fluid flow downstream of the first flow channel 11a to a direction different from the first direction d1, the heat dissipation effect can be improved compared to when the fluid that has flowed through the first flow channel 11a flows out of the fluid ultraviolet light processing device 4 along the first direction d1, and the decrease in the amount of ultraviolet light emitted from the light source 40 can be suppressed. As a result, the integrated illuminance of the fluid in the second flow channel 51a due to ultraviolet light can be increased, and the processing effect of ultraviolet light on the fluid can be further enhanced.

[0066] The fluid that has flowed through the third channel 61 changes direction again to the first direction d1 in the fourth channel 62. This facilitates connection to piping extending in the first direction d1 downstream of the fluid ultraviolet light processing device 4.

[0067] Furthermore, the flow path conversion member 60 and mounting member 10' shown in Figure 5 can also be combined with the flow path pipe 20 shown in Figure 1.

[0068] The embodiments of this disclosure have been described above with reference to specific examples. However, this disclosure is not limited to these specific examples. All forms that a person skilled in the art can implement by appropriately modifying the design based on the embodiments described above also fall within the scope of this disclosure, insofar as they encompass the gist of this disclosure. Furthermore, within the scope of the idea of ​​this disclosure, a person skilled in the art can conceive of various modifications and alterations, and these modifications and alterations also fall within the scope of this disclosure. [Explanation of Symbols]

[0069] 1-4…Fluid ultraviolet light processing device, 10…Mounting member, 11…First channel section, 11a…First channel, 12…Light source placement section, 14…Fin, 20…Channel tube, 21…Second channel section, 21a…Second channel, 22…Light guide member, 23…Light incident surface, 24…Light extraction surface, 25…Reflecting surface, 26…Light diffusion section, 27…Scattering section, 40…Light source, 50…Channel tube, 51…Second channel section, 51a…Second channel, 52…First opening, 56…Second opening

Claims

1. One or more light sources that emit ultraviolet light traveling in a first direction, A first channel section that forms a first channel extending in the first direction, and a light source arrangement section located on the side of the first channel section and outside the first channel section, where one or more light sources are arranged, A mounting member having, A flow tube having a second flow channel section that forms a second flow channel connected to the first flow channel, wherein ultraviolet light emitted from the light source irradiates the second flow channel, Equipped with, The mounting member has an outer peripheral portion that forms the outermost surface of the mounting member, The light source arrangement portion is located between the first flow path portion and the outer peripheral portion when viewed from the first direction. The light source arrangement portion and the outer periphery portion are formed of a material that blocks ultraviolet light. A fluid ultraviolet light processing apparatus in which the first flow channel and the light source arrangement are formed integrally.

2. The flow channel tube is located on the side of the second flow channel and outside the second flow channel, and has a light guide member extending in the first direction, The fluid ultraviolet light processing apparatus according to claim 1, wherein the light guide member has a light incident surface facing the light emission surface of the light source in the first direction, a light extraction surface provided on the outer surface of the second flow path, and a reflective surface located outside the light extraction surface and facing the light extraction surface.

3. The fluid ultraviolet light processing apparatus according to claim 2, wherein the light guide member has a light diffusing portion disposed on the light extraction surface.

4. The fluid ultraviolet light processing apparatus according to claim 1, wherein the flow channel has a light-transmitting member facing the light-emitting surface of the light source in the first direction, and an opening disposed on the side of the flow channel and connected to the second flow channel.

5. Viewed from the first direction, the light source arrangement surrounds the first flow path, The fluid ultraviolet light processing apparatus according to any one of claims 1 to 4, wherein a plurality of the light sources are arranged in the light source arrangement section.

6. The fluid ultraviolet light processing apparatus according to any one of claims 1 to 5, wherein the mounting member is a metal member.

7. The fluid ultraviolet light processing apparatus according to any one of claims 1 to 6, wherein the mounting member has fins located in the first flow channel.

8. The fluid ultraviolet light processing apparatus according to any one of claims 1 to 7, wherein the flow channel tube is detachably attached to the mounting member.

9. The fluid ultraviolet light processing apparatus according to any one of claims 1 to 8, wherein the mounting member is connected to another flow channel on the opposite side of the flow channel in the first flow channel section.

10. The aforementioned light source comprises a first light source and a second light source. The fluid ultraviolet light processing apparatus according to claim 9, wherein the light-emitting surface of the first light source and the light-emitting surface of the second light source are oriented in opposite directions to each other in the first direction.

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