JP2018149470A - Light-transmitting channel unit and photoreaction device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a light-transmitting channel unit with a high degree of freedom in adjustment of channel length, and a photoreaction device.SOLUTION: A light-transmitting channel unit 1 has a light-transmitting channel for fluidizing a photoreactive material for photoreaction. The light-transmitting channel has a plurality of translucent channel pipes 3 in a selectively connectable manner.SELECTED DRAWING: Figure 2

Description

  The present invention relates to a light-transmitting flow path unit including a light-transmitting flow path for flowing a photoreactive substance that reacts with light, and a photoreaction apparatus including the light-transmitting flow path unit.

As a photoreaction device, for example, a reaction part formed by a light-transmitting channel, a liquid-feeding part for sending a substance to be reacted to the reaction part, and a substance to be reacted in the light-transmitting channel by irradiating the reaction part A light source unit including at least one light source that causes a photochemical reaction to be generated, and a recovery unit that recovers a photochemical reaction product generated by the photochemical reaction. The reaction unit is unitized as one unit, and is integrated with the light source unit. A flow-type photochemical reaction device that is detachably attached to the light source unit has been proposed (for example, Patent Document 1).
In this flow type photochemical reaction device, as a reaction part, a first substrate on which a groove corresponding to a light transmissive channel is formed, and light superimposed on the first substrate so as to cover the groove formed on the first substrate. A unit comprising a transmissive second substrate is provided.
This unit is provided with a plurality of outlets in the groove, and the flow path length can be adjusted according to the photochemical reaction.

JP 2007-75682 A

In the above unit, since the first substrate is provided with a groove and a discharge port in advance, there is a problem that the degree of freedom in adjusting the flow path length is low. In order to increase the degree of freedom of the channel length, it is necessary to prepare a plurality of types of first substrates and second substrates.
An object of the present invention is to provide a light-transmitting flow path unit and a photoreaction apparatus having a high degree of freedom in adjusting the flow path length.

The light transmissive flow path unit according to the present invention is a light transmissive flow path unit including a light transmissive flow path for flowing a photoreactive substance that reacts with light, and the light transmissive flow path unit is transparent. A plurality of optical flow pipes are provided so as to be selectively connectable.
A photoreaction apparatus according to the present invention includes a light-transmitting flow path unit including a light-transmitting flow path for flowing a photoreactive substance that reacts with light, and a light source for emitting light to the photoreactive substance. The light transmissive flow path unit is the light transmissive flow path unit.

  In the light-transmitting flow path unit and the photoreaction apparatus according to the present invention, a plurality of flow path tubes can be selectively connected, so that the degree of freedom in adjusting the flow path length can be increased.

1 is an overall perspective view of a light transmissive flow path unit according to a first embodiment. It is a cross-sectional perspective view of the light-transmitting flow path unit according to the first embodiment. (A) is a side view of the light transmissive flow path unit according to the first embodiment, and (b) is a cross-sectional side view of the light transmissive flow path unit according to the first embodiment. It is a longitudinal cross-sectional enlarged view of the light transmissive flow path unit which concerns on 1st Embodiment. It is a whole perspective view of the light transmissive channel unit concerning a 2nd embodiment. It is a longitudinal cross-sectional enlarged view of the light transmissive flow path unit which concerns on 2nd Embodiment. (A) is a side view of the light transmissive flow path unit according to the second embodiment, and (b) is a cross-sectional side view of the light transmissive flow path unit according to the second embodiment. 10 is a cross-sectional view showing a light transmissive flow path unit according to Modification 2. FIG.

<Overview>
A light transmissive flow path unit according to an aspect of the embodiment is a light transmissive flow path unit including a light transmissive flow path for flowing a photoreactive substance that reacts with light, wherein the light transmissive flow unit is provided. The path includes a plurality of light-transmitting flow path pipes that can be selectively connected.
In the light transmissive flow path unit according to another aspect of the embodiment, the plurality of flow path tubes are arranged in an annular shape when viewed from the tube axis direction. Thereby, size reduction can be achieved.
The light transmissive flow path unit according to another aspect of the embodiment has an accommodation space in which the light source unit that emits the light is arranged in the annular central portion. This eliminates the need to prepare a separate space for the light source unit.
In the light transmissive flow path unit according to another aspect of the embodiment, the annular shape is an annular shape. Thereby, the intensity | strength of the energy of the light irradiated to each flow-path pipe | tube can be set constant by arrange | positioning a light source unit on the annular center.

<First Embodiment>
A light transmissive flow path unit (hereinafter simply referred to as a “flow path unit”) 1 according to an aspect of an embodiment will be described with reference to FIGS.
The flow path unit 1 includes a plurality of flow path pipes 3. A plurality of flow path pipes 3 are selectively connected to form a flow path. The channel tube 3 here is made of a light-transmitting material that transmits light. A flow path constituted by a single flow path pipe or two or more connected flow path pipes constitutes a light transmissive flow path. A liquid containing a photoreactive substance is supplied to the light transmissive flow path, and the liquid flows in the flow path. Note that when light is applied to the flowing liquid, the photoreactive substance undergoes a photoreaction.
As shown in the drawing, the channel unit 1 includes a plurality of channel tubes 3 and a support 5 that supports the plurality of channel tubes 3. The plurality of flow path pipes 3 are supported in a state where a space 7 exists in the center. That is, the plurality of flow path pipes 3 are arranged in a ring shape when viewed from the pipe axis direction, and a space 7 is formed in the center part of the ring. In other words, the plurality of flow path pipes 3 are arranged in a ring shape around the space 7. The space 7 is a housing space for the light source unit for emitting (supplying) light to the liquid in the flow channel tube 3.

1. Channel tube The channel tube 3 is made of, for example, a glass tube. The flow channel pipe 3 has a straight tubular shape. The channel tube 3 has a cylindrical shape, and its inner diameter and outer diameter are constant. As the glass tube, for example, quartz glass, borosilicate glass, or the like can be used. The end 3 a of the flow channel tube 3 is inserted into the through hole 55 of the support plate 51 of the support 5, for example. Thereby, the flow path pipe 3 is supported by the support plate 51.
In the present embodiment, the number of the plurality of flow path pipes 3 is twelve. The twelve flow channel pipes 3 are arranged in an annular shape with the tube axes of the respective flow channel pipes 3 being parallel. The annular shape here is an annular shape, and the tube axes of the twelve flow channel tubes 3 are located on substantially one circumference. In addition, as shown in FIG. 4, the edge part 3a of the flow-path pipe | tube 3 becomes the step shape which an end side becomes thin.

2. Support Tool The support tool 5 includes, for example, a pair of support plates 51 that support the plurality of flow path pipes 3 and a connecting body 53 that connects the pair of support plates 51.
The support plate 51 has an annular shape (for example, an annular shape). The support plate 51 has a plurality of through holes 55 into which a plurality of flow channel tubes 3 are inserted. Here, the through holes 55 are provided at equal intervals (equal angles) in the circumferential direction of the flow path unit 1. The through hole 55 has a stepped shape on the side (inside) where the other support plate 51 is positioned (see FIG. 4). A portion 55 a having a small diameter in the through hole 55 has a support function for supporting the flow path tube 3. A portion 55b having a large diameter in the through hole 55 has an attachment function for attaching a connection tool (not shown) for connecting the flow path pipe 3 and assisting the attachment.
As shown in FIG. 4, the end portion 3 a of the flow channel pipe 3 is supported by a through hole 55 of the support plate 51 via, for example, an O-ring-shaped packing 39, and an inner portion of the through hole 55 is used for packing. A groove 55c is provided.

  The support plate 51 has a through hole 57 between the through holes 55 for the channel pipe. There are a plurality of through-holes 57 provided at equal intervals (equal angles) in the circumferential direction of the flow path unit 1. The connecting rod 59 is inserted through the through hole 57. The threaded portions at both ends of the connecting rod 59 pass through the through hole 57 and are screwed with the nut 58 outside the support plate 51. The connecting body 53 is configured by the connecting rod 59 and the nut 58. The through hole 57 here is located on the circumference where the plurality of through holes 55 are located.

3. As the connection tool, for example, a tube having connectors attached to both ends can be used. Specifically, by using a head nut and a gripper ferrule ("Omnifit" (registered trademark of Isis Co., Ltd.)) attached to the tip of the tube, the head nut is attached to the through hole 55 of the support plate 51, so that 2 The flow path pipe 3 is connected to the inner peripheral surface of the large diameter portion 55b of the through hole 55 in the support plate 51, and the male screw portion of the head nut is screwed into the female screw portion. To do.

<Second Embodiment>
The light transmissive flow path unit (hereinafter simply referred to as “flow path unit”) 101 according to the second embodiment will be described with reference to FIGS. 5 to 7 and the photoreaction apparatus 100 with reference to FIG.
1. Channel Unit The channel unit 101 according to the second embodiment uses the channel unit 1 according to the first embodiment, and the same configuration is the same as the channel unit 1 of the first embodiment. The description will be omitted using reference numerals.
The flow path unit 101 includes a plurality of flow path pipes 3 constituting the flow path, a support 105 that supports the plurality of flow path pipes 3, and a partition that divides a space for accommodating the plurality of flow path pipes 3. And a tool 107. A space partitioned by the partitioning tool 107 is referred to as a storage space 179. In FIGS. 6 and 7, the leading line of the accommodation space 179 has an arrow at the tip in order to distinguish it from the leading line of the support plate 151 and the outer cylinder 173.
As in the first embodiment, the plurality of flow path tubes 3 are arranged in an annular shape (annular shape) so that a light source unit space 108 is formed inside. The leading line of the space 108 also has an arrow at the tip in order to distinguish it from the inner cylinder 171 in FIGS.

The partitioning tool 107 is provided with an inner cylindrical body 171 and an outer cylindrical body 173 arranged along the central axis of the flow path unit 101 in a double tubular shape, and an accommodating space between the inner cylindrical body 171 and the outer cylindrical body 173. 179 is formed. The inner space of the inner cylinder 171 is a space for arranging the light source unit.
Here, the inner cylinder 171 and the outer cylinder 173 are fixed by a pair of support plates 151 constituting the support 105. The inner cylinder 171 and the outer cylinder 173 here are both cylindrical. The inner cylinder 171 and the outer cylinder 173 are supported by the support plate 151 so that the central axes thereof coincide with each other. Here, further, the above-mentioned central axis coincides with an annular central axis in which a plurality of flow path pipes 3 are arranged.
The inner cylindrical body 171 is made of a material that transmits light for the photoreactive substance in order to enable the photoreaction of the photoreactive substance. Examples of the light transmitting material include translucent resin materials such as acrylic, epoxy, and silicone, and glass materials. The outer cylindrical body 173 is made of, for example, a metal material.

The accommodation space 179 in this embodiment is configured as a sealed space. For this reason, the support tool 105 is different from the support tool 5 of the first embodiment in that it includes a sealing packing or the like. Hereinafter, different points will be mainly described.
The support tool 105 includes a pair of support plates 151 that support the end portion 3 a of the flow channel tube 3 and a connecting body 53 that connects the pair of support plates 151. The support plate 151 has a through hole 153 for supporting the end 3 a of the flow channel tube 3 and a through hole 155 for the connecting rod 59 of the connecting body 53. The positions of the through holes 153 and 155 are located on the circumference centering on the central axis of the ring formed by the arrangement of the plurality of flow path pipes 3 as in the first embodiment.

The support tool 105 supports the flow path tube 3 and the partition tool 107 in a sealed state.
The support plate 151 has a space for the packing 191 disposed between the peripheral surface constituting the through hole 153 for the flow channel tube 3 and the end 3 a of the flow channel tube 3. This space is constituted by, for example, a groove 153 c formed at the inner end of the through hole 153 of the support plate 151. The diameter of the through-hole 153 is large at both side portions in the thickness direction of the support plate 151 and is small at the intermediate portion located therebetween. That is, the intermediate portion 153a is for supporting the flow channel tube 3, and the outer portion 153b having a large outer diameter is for a connector for connecting the flow channel tube 3, and the inner portion (153c) having a large inner diameter. Is for packing 191.

The support plate 151 has a space for the packing 193 disposed between the outer peripheral surface of the end portion of the inner cylinder 171 and the inner peripheral surface of the support plate 151. This space is configured by, for example, a groove 151 a that is recessed from the inner peripheral surface of the support plate 151. The groove 151a is formed continuously (one turn) in the circumferential direction. A step 171 a for positioning with respect to the support plate 151 is provided on the outer peripheral surface of the end portion of the inner cylindrical body 171.
The support plate 151 has a space for the packing 195 disposed between the inner peripheral surface of the end portion of the outer cylinder 173 and the outer peripheral surface of the support plate 151. This space is constituted by, for example, a groove 151 b that is recessed from the outer peripheral surface of the support plate 151. The groove 151b is formed continuously (one turn) in the circumferential direction. A step 173 a for positioning with respect to the support plate 151 is provided on the inner peripheral surface of the end portion of the outer cylindrical body 173.

2. Photoreaction Device The photoreaction device 100 includes a flow path unit 101 and a light source unit 109 as shown in FIG. The light source unit 109 emits light that reacts with the photoreactive substance. As the light source of the light source unit 109, for example, a straight tube type lamp is used. The light source of the light source unit 109 may use a discharge tube such as a cold cathode tube or a hot cathode, or may use a light emitting element such as an LED or LD.
The light source unit 109 is disposed in a space 108 that exists in a portion including the central axis of the flow path unit 101. The light source unit 109 is fixed to the flow path unit 101 by a fixing unit (not shown).

3. About Use The accommodation space 179 of the flow path unit 101 in the present embodiment is configured to be hermetically sealed. For this reason, for example, the temperature of the flow path pipe 3 can be adjusted by injecting hot water or cold water into the accommodation space 179.
Further, a supply port or a discharge port may be provided in the outer cylinder 173 or the support plate 151 to circulate hot water or cold water. Thus, by providing the accommodation space 179, the temperature of the flow path tube 3 can be controlled.

<Third Embodiment>
A light transmissive flow path unit (hereinafter simply referred to as “flow path unit”) 201 according to a third embodiment will be described with reference to FIG.
The flow path unit 1 according to the first embodiment and the flow path unit 101 according to the second embodiment are provided with a plurality of flow path pipes 3 in a single annular shape, but are provided with multiple flow path pipes in multiple rings. The light transmissive flow path unit 201 according to the third embodiment will be described. In addition, about the same structure as the flow path units 1 and 101 which concern on 1st Embodiment and 2nd Embodiment, the same code | symbol is used and the description is abbreviate | omitted.

1. Configuration The channel unit 201 is arranged in a double ring shape when the plurality of channel tubes 3 are viewed from the longitudinal direction of the channel unit 201. That is, the plurality of flow channel tubes 3 are arranged on the circumferences of circles 203 and 205 that are concentric circles around the central axis of the central space 209. Note that the center of the circle 203 coincides with the center of the circle 205.
The flow path pipe 3 disposed on the circumference of the inner circle 203 is referred to as the inner flow path pipe 31, and the flow path pipe 3 disposed on the circumference of the outer circle 205 is referred to as the outer flow path pipe 33. . Here, the number of the inner channel pipes 31 and the number of the outer channel pipes 33 are the same, but the number may be different. Note that the plurality of flow path pipes 3 are all supported by the support 207 in a parallel state.
Here, the plurality of flow path pipes 31 and 33 are arranged at equal intervals (equal angles) on the circumferences of the circles 203 and 205, and the outer flow path pipe 33 is positioned between the inner flow path pipes 31 in the circumferential direction. To do. Note that the plurality of flow path pipes 31 and 33 may be arranged at equal intervals.

2. Use Alphabetic characters are added to the symbols “31” and “33” so that a plurality of inner channel tubes 31 and outer channel tubes 33 can be distinguished.
In the main flow path unit 201, a plurality of flow path pipes 3 can be selected and connected, so that various flow path lengths can be adjusted.
(1) Number of channels For example, a plurality of (for example, three) channel tubes 31 a, 31 b, and 31 c among the inner channel tubes 31 are connected, and one channel is connected to the channel unit 201. It may be formed.
Further, for example, a plurality of (for example, two) inner flow pipes 31 may be connected to form a total of four independent flow paths. Specifically, the flow path pipes 31a and 31b, the flow path pipes 31c and 31d, the flow path pipes 31e and 31f, and the flow path pipes 31g and 31h may be connected to form four independent flow paths. By increasing the number of channels, productivity (result of photoreaction) can be increased. Even if the number of channels increases, the amount of light energy given to each channel tube 3 can be made constant by arranging the light source unit on the central axis of the space 209.

(2) Position of flow path For example, one inner flow path pipe 31 and one outer flow path pipe 33 may be connected. In this case, the light energy given to the flow path tube 3 can be adjusted in two steps. The upstream and downstream sides of the inner channel pipe 31 and the outer channel pipe 33 may be appropriately determined according to the characteristics of the photoreactive substance moving in the channel pipe 3. Thereby, the intensity | strength of light energy can be adjusted with one flow path unit 201, without changing the light output of a light source unit, etc. FIG.
Further, the two inner channel pipes 31a and 31b and the one outer channel pipe 35a are connected to form one channel, and the three inner channel pipes 31c, 31d, and 31e provide another flow. A path may be formed, and another flow path may be formed by the three outer flow path pipes 35b, 35c, and 35d.
(3) A plurality of channel pipes may be used in connection patterns other than those described above, and the degree of freedom of the channel length can be significantly improved even if one channel unit 201 is used.

Each embodiment has been described above. However, the present invention is not limited to this embodiment. For example, the following modification may be used. Further, the embodiment may be a combination of the modified example and the modified examples.
In addition, examples that are not described in the embodiments and modifications, and design changes that do not depart from the gist are also included in the present invention.

<Modification>
1. Channel tube (1) The channel tube 3 of the embodiment is a straight tube, and both the inner diameter and the outer diameter are constant in the tube axis direction. However, it may be a tapered tube in which at least one of the inner diameter and the outer diameter of the flow channel pipe gradually changes along the pipe axis direction. Thereby, the light quantity which permeate | transmits a flow-path pipe | tube can be adjusted.
(2) The flow path tube may include mixing means for mixing liquid flowing inside. Examples of the mixing means include a static mixer. In addition, it is good also as a shape which can mix an internal peripheral surface.
(3) The plurality of flow channel tubes 3 of the embodiment are arranged in an annular shape when viewed from the direction in which the tube axis extends. For example, a plurality of flow channel tubes are arranged in an elliptical shape. Also good. In this case, when connecting a plurality of channel tubes, the channel may be separated from the light source unit as the channel becomes longer, or may be moved closer to the light source unit as the channel becomes longer. Thereby, the light quantity supplied to the photoreactive substance moving in the flow path tube can be adjusted.
(4) Although the flow channel tube 3 of the embodiment has a straight tubular shape, for example, it may have a spiral shape, as long as both end portions in the longitudinal direction are supported. Also in this case, the channel length can be easily adjusted by selectively connecting a plurality of channel tubes.
(5) The flow path tube 3 of the embodiment is not particularly subjected to surface treatment or the like. For example, when a glass tube is used, blast treatment or etching treatment may be performed on the outer surface. Thereby, the surface of a glass tube is whitened and the light transmittance can be adjusted. At this time, the outer surface may be different in processing state in the cross section of the channel tube. For example, the amount of light supplied to the photoreactive substance can be adjusted by supporting the rotation of the flow path tube so that the outer surface is different by 1/3 in the circumferential direction.
Moreover, it is good also considering a part of outer surface of a flow-path pipe as a reflective surface. Thereby, light can be effectively used from the light source unit.
(6) Although the catalyst etc. are not arranged in the inside of the channel pipe of an embodiment, you may apply catalysts, such as a photocatalyst, to the inner surface. The application can be performed by flowing with a liquid containing a catalyst.

2. Although the support plate 51 of the embodiment of the support (1) has a disc shape, it may have a polygonal shape, for example. Thereby, when the light transmissive flow path unit is placed on a flat surface, the flow path unit can be prevented from rolling.
(2) In the embodiment, the through holes 55 for the channel pipes are provided in the support plate 51 at equal intervals (equal angles) in the circumferential direction of the unit, but may not be provided at equal intervals.
(3) Although the through hole 57 for the connecting body is provided on the same circumference as the through hole 55 for the flow path pipe, it may be provided on a different circumference.
(4) The support plate 51 of the embodiment has a through hole 55 for a flow path tube, and one flow path pipe 3 is supported by one through hole 55. A path pipe may be supported. In this case, the shape of the through hole is a long hole.
(5) In the embodiment, the pair of support plates 51 are connected by the connecting body 53, but the pair of support plates may be fixed at the base of the photoreaction apparatus, or a single support plate may be used, You may make it suspend several flow-path pipes. In this case, the central axis of the flow path unit is the vertical direction.

3. Connection The connection tool is not particularly limited as long as it can connect two flow path pipes. In the embodiment, the end portion 3a of the flow path tube 3 has a structure connected by a connection tool (omnifit) within the through hole 55 of the support plate 51. For example, the end portion of the flow path tube is supported by the end portion 3a. The structure may be such that it protrudes from the plate and is directly connected by an elastic tube outside the support plate.
The connector may be one element constituting the flow path unit, another element not constituting the flow path unit, one element constituting the photoreaction apparatus, or constituting the photoreaction apparatus. It is good also as another element which does not.

4). The inner cylindrical body 171 and the outer cylindrical body 173 constituting the partitioning tool 107 in the partitioning tool (1) embodiment are both cylindrical. For example, the outer cylindrical body may be a polygonal cylindrical shape, The cylinder and the inner cylinder may be polygonal cylinders.
The inner cylindrical body 171 and the outer cylindrical body 173 are provided so that the central axis of the inner cylindrical body 171 and the central axis of the outer cylindrical body 173 coincide, but the central axes of the inner cylindrical body and the outer cylindrical body coincide with each other. It does not have to be.
(2) Each of the inner cylindrical body 171 and the outer cylindrical body 173 of the embodiment is a straight tube having a constant inner diameter and outer diameter, but at least one of the inner diameter and the outer diameter is shifted from one end to the other end. A gradually changing taper tube may be used.
(3) Although the outer cylinder body 173 of the embodiment is made of metal, for example, a transparent resin pipe may be used. In this case, the photoreaction state can be observed from the outside.
(4) Although the accommodation space 179 of the second embodiment is configured in a sealed state, it may not be in a sealed state. For example, a through hole may be provided in the outer cylinder and the support plate, and a heater or the like may be inserted from the through hole. Moreover, you may distribute a heat insulating material etc. in accommodation space.
(5) Although the inner cylindrical body 171 of the embodiment has translucency, the length of the flow path that can receive light may be changed by covering half of the central axis direction with a non-light transmissive film.

5. Light source unit Although the light source unit is not described in detail, an existing lamp can be used. At this time, the lamp surface may be covered with a non-light-transmitting film, and the main emission region of light may be selected.
An LED can be suitably used as the light source of the light source unit. In particular, by using an LED having a wavelength suitable for the photoreaction, the photoreaction can be efficiently generated. Moreover, a light reaction can be efficiently produced by using LED with strong directivity.

6). The pump embodiment does not describe a pump that delivers liquid or the like to the channel tube. The photoreaction apparatus may include a flow path unit, a light source unit, and a pump unit. Note that the turbulent flow may be generated in the flow path pipe by adjusting the liquid delivery amount of the pump unit and the inner diameter of the flow path pipe.
7. Photoreactive substances and liquid (fluid)
Although the light-reactive substance is not particularly described in the embodiment, it is not particularly limited as long as the reaction is caused by light emitted from the LED or the lamp. The reaction mentioned here includes chemical reactions (eg, binding, dissociation, luminescence, oxidation, reduction, synthesis, etc.), sterilization, cell growth, luminescence, power generation, etc. Including.
The photoreactive substance may be a gas, a liquid, a solid, or a mixture of these. For example, when the photoreactive substance is a gas such as a dye molecule (chlorophyll molecule or the like), the gas may be flowed as a fluid. When the photoreactive substance is, for example, a gas such as ozone, a liquid containing the gas (for example, halomethane) may be flowed as a fluid. In the case of a substance (solid) such as bacteria, a liquid containing a solid (eg, water) or a gas containing a solid (eg, air) may be flowed as a fluid.
In addition, when a to-be-photoreacted substance is a liquid, you may contain other substances (solid, liquid, gas), such as a promoting substance which accelerates | stimulates reaction, for example. In addition, for example, the fluid may be divided into gases by putting a gas between the liquids containing the photoreactive substances.

DESCRIPTION OF SYMBOLS 1 Light transmission flow path unit 3 Flow path pipe 5 Support

Claims (5)

A light-transmitting flow path unit including a light-transmitting flow path for flowing a photoreactive substance that reacts with light,
The light transmissive flow path unit includes a light transmissive flow path unit that can selectively connect a plurality of light transmissive flow path tubes. The light-transmissive channel unit according to claim 1, wherein the plurality of channel tubes are arranged in an annular shape when viewed from the tube axis direction. The light-transmitting flow path unit according to claim 2, wherein a housing space in which the light source unit that emits the light is arranged is provided in the annular central portion. The light-transmitting flow path unit according to claim 2 or 3, wherein the annular shape is an annular shape. A light-transmitting flow path unit comprising a light-transmitting flow path for flowing a photoreactive substance that reacts with light; and
A light source unit including a light source for emitting light to the photoreactive substance,
The photoreactive device, wherein the light transmissive flow path unit is the light transmissive flow path unit according to any one of claims 1 to 4.

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