JP7230624B2 - Fluid sterilizer - Google Patents

Description

Embodiments of the present invention relate to fluid disinfection devices.

2. Description of the Related Art There is known a fluid sterilization device that sterilizes a fluid by irradiating ultraviolet light emitted by a light emitting element of a light source toward a flow path in which fluid such as water or gas flows. Some fluid sterilizers of this type have a substrate on which an LED (Light Emitting Diode) that emits ultraviolet rays is mounted as a light source.

JP 2017-051290 A JP 2018-069166 A

By the way, when sterilizing the fluid by irradiating the fluid flowing in the flow path with the ultraviolet light emitted by the LED, in order to obtain a higher sterilization effect, it is necessary to increase the output of the LED and increase the efficiency of irradiating the fluid with the ultraviolet light. is desirable. However, simply increasing the power supplied to the LEDs or increasing the number of LEDs mounted will reduce the luminous efficiency of the LEDs, which have temperature limits due to heat generation, due to the heat generated during light emission. is difficult.

In addition, since the luminous efficiency of the light source decreases as the lighting time elapses, it is necessary to periodically replace components such as the light source in the fluid sterilization apparatus. However, conventional fluid sterilizers require complicated work when replacing parts.

The problem to be solved by the present invention is to provide a fluid sterilizer that can facilitate replacement of parts while suppressing temperature rise of the light source.

A fluid sterilizer according to an embodiment includes a processing section, a light source section, a cover member, and a channel member. The processing section processes the fluid. The light source unit has a light source that irradiates ultraviolet rays toward the processing unit, and a support member that supports the light source. The cover member is arranged on the front side of the light source section and protects the light source from the fluid. The channel member has a holding portion that holds the cover member, and a fluid channel that communicates the processing portion with the outside. At least part of the fluid flow path is positioned laterally of the light source section, and the light source section and the flow path member are in thermal contact with each other. The channel member has a mounting portion to which the light source is detachably mounted.

ADVANTAGE OF THE INVENTION According to this invention, replacement|exchange of components can be facilitated, suppressing the temperature rise of a light source.

It is a schematic diagram which shows the application example of the fluid sterilization apparatus which concerns on 1st Embodiment. 1 is a cross-sectional view showing a fluid sterilization device according to a first embodiment; FIG. FIG. 3 is a cross-sectional view taken along the line AA of FIG. 2; FIG. 3 is a cross-sectional view taken along the line BB of FIG. 2; 3 is a cross-sectional view taken along line CC of FIG. 2; FIG. It is a schematic diagram showing the mounting portion according to the first embodiment. It is a cross-sectional schematic diagram which shows the mounting|wearing aspect of the light source part which concerns on 1st Embodiment. It is a cross-sectional schematic diagram which shows the mounting part which concerns on 2nd Embodiment. It is a cross-sectional schematic diagram which shows the mounting part which concerns on 3rd Embodiment. It is a schematic diagram which shows the mounting part which concerns on 4th Embodiment. FIG. 11 is a cross-sectional view showing a fluid disinfection device according to a fifth embodiment; FIG. 12 is a cross-sectional view taken along line DD of FIG. 11; FIG. 12 is a cross-sectional view taken along line EE of FIG. 11; FIG. 12 is a cross-sectional view taken along line FF of FIG. 11; FIG. 11 is a cross-sectional view showing a fluid sterilization device according to a sixth embodiment;

A fluid sterilizer 1 according to an embodiment described below includes a processing section 20 , a light source section 40 , a cover member 50 and a channel member 30 . The processing unit 20 processes fluid. The light source unit 40 has a light source 42 that irradiates ultraviolet rays toward the processing unit 20 and a support member 41 that supports the light source 42 . The cover member 50 is arranged on the front side of the light source section 40 and protects the light source 42 from the fluid. The channel member 30 has a holding portion that holds the cover member 50 and a fluid channel that communicates the processing portion 20 with the outside. At least part of the fluid flow path is located on the side of the light source section 40 , and the light source section 40 and the flow path member 30 are in thermal contact with each other. The flow path member 30 has a mounting section to which the light source section 40 is detachably mounted.

Further, the flow path member 30 according to the embodiment described below extends to the back side of the light source section 40 , and the light source section 40 is attached to the flow path member 30 from the side surface side of the cover member 50 .

Moreover, the support member 41 according to the embodiment described below has a medium flow path 412 for circulating a heat medium different from a fluid.

Further, the channel member 30 according to the embodiment described below has an opening of the fluid channel on the side of the light source section 40 .

Hereinafter, fluid sterilizers according to embodiments will be described with reference to the drawings. In addition, each following embodiment shows an example, Comprising: It does not limit invention. Moreover, each embodiment shown below can be suitably combined in the range which does not contradict. In addition, in the description of each embodiment, the same reference numerals are given to the same configurations, and the description later will be omitted as appropriate.

(First embodiment)
FIG. 1 is a schematic diagram showing an application example of the fluid sterilizer according to the first embodiment. FIG. 2 is a cross-sectional view showing the fluid sterilization device according to the first embodiment.

In order to make the explanation easier to understand, FIG. 2 shows a three-dimensional orthogonal coordinate system including the Z-axis, in which the upward vertical direction is the positive direction and the vertical downward direction is the negative direction. Such an orthogonal coordinate system is also shown in other drawings used in the description below.

(Configuration of fluid sterilizer)
As shown in FIG. 1, the fluid sterilizer 1 of the first embodiment is connected to a supply tank 2 that supplies fluid, and is connected to a recovery tank 7 that recovers fluid irradiated with ultraviolet rays. As shown in FIGS. 1 and 2 , the fluid sterilizer 1 is connected to the supply tank 2 via the upstream channel member 4 on the upstream side. The upstream channel member 4 is provided with a pump 3 for sending fluid from the supply tank 2 to the fluid sterilizer 1 . Further, the fluid sterilizer 1 is connected to the collection tank 7 via the downstream channel member 5 on the downstream side. The downstream channel member 5 is provided with a flow rate adjusting mechanism 6 that adjusts the flow rate of the fluid sent from the fluid sterilizer 1 to the collection tank 7 .

The fluid sterilizer 1 is used, for example, in a drinking water supply system to sterilize water in a supply tank 2 . In this embodiment, as the fluid, for example, liquid such as clean water is applied, but gas may also be applied.

As shown in FIG. 2 , the fluid sterilization device 1 includes a processing section 20 , a housing member 23 , a light source section 40 , a cover member 50 , a connection member 10 and a channel member 30 .

The processing section 20 includes a tubular member 21 having a flow path 24 inside which a fluid flows, and a reflector 22 arranged on the outer surface 21 a of the tubular member 21 . The processing section 20 processes the fluid flowing through the channel 24 .

The tubular member 21 is, for example, a quartz tube and transmits ultraviolet rays. The tubular member 21 is a cylindrical member with both ends opened. The reflecting plate 22 is an example of a reflecting surface that reflects the ultraviolet rays emitted from the light source unit 40 into the flow path 24 into the flow path 24, and is made of, for example, a high-brightness aluminum plate. One end of the tubular member 21 is supported and fixed to the connecting member 10 and the other end to the channel member 30 .

Note that the reflector 22 is not limited to a high-brightness aluminum plate, and may be any member as long as it reflects ultraviolet rays with high efficiency. A reflective film may be formed on the outer surface 21 a of the tubular member 21 instead of the reflector 22 . A silica film, for example, is used as the reflective film. In addition, the reflective film is not limited to the silica film, and may be an aluminum deposition film. Moreover, the tubular member 21 is not limited to a quartz tube, and may be a fluororesin such as polytetrafluoroethylene (PTFE). Also, the reflecting plate 22 may be formed on the inner surface of the tubular member 21 instead of being formed on the outer surface 21 a of the tubular member 21 . Furthermore, the processing section 20 may have both the reflector 22 and the reflective film, or may not have the reflective plate 22 and the reflective film.

The housing member 23 houses the processing section 20 . The housing member 23 is made of a metal material such as stainless steel (SUS) and formed into a cylindrical shape that houses the processing unit 20 inside, and also functions as a cover member that covers and protects the outer periphery of the processing unit 20 . . Flanges are formed on both ends of the housing member 23 , one end of which is fastened to the connecting member 10 and the other end of which is fastened to the flow path member 30 .

The light source unit 40 irradiates the flow path 24 of the processing unit 20 with ultraviolet rays. Also, the light source section 40 has a light source 42 , a substrate 43 and a support member 41 .

The light source 42 is a light emitting element that emits ultraviolet rays and is mounted on the substrate 43 . The light source 42 is, for example, an LED. The light source 42 is supplied with power from a power source (not shown) and emits light. The light source 42 is arranged to face the processing section 20 and irradiates the processing section 20 with ultraviolet rays. Further, the light source 42 may have a peak wavelength in the vicinity of a wavelength of 280 [nm] in consideration of life and output. The wavelength of the ultraviolet rays is not limited as long as it is sufficient. That is, the light source 42 is not limited to an LED, and may be another semiconductor element that emits ultraviolet rays in a predetermined wavelength band, such as a laser diode (LD).

The substrate 43 is formed using a metal material as a base material. Although not shown, a desired conductive pattern (wiring pattern) is formed on the substrate 43 via an insulating layer, and the light source 42 is provided on the conductive pattern. Note that the base material of the substrate 43 is not limited to metal materials, and ceramics such as alumina may be used. The substrate 43 is fixed to and supported by the support member 41 .

The support member 41 supports the light source 42 by fixing the substrate 43 on which the light source 42 is mounted at a predetermined position. Here, the light source 42 needs to be replaced periodically because the luminous efficiency of the light source 42 decreases as the lighting time elapses. For this reason, the fluid sterilizer 1 has a structure in which the support member 41 that supports the light source 42 can be easily attached and detached in order to facilitate replacement of the light source unit 40 . Details of this point will be described later.

The cover member 50 is an ultraviolet transmitting member made of, for example, quartz glass, and is arranged on the front side of the light source section 40 in the Z-axis negative direction. The cover member 50 is fixed to the flow path member 30, airtightly closes the space enclosed between the cover member 50 and the support member 41 of the light source section 40, and protects the light source 42 from the fluid. The cover member 50 transmits the ultraviolet rays emitted by the light source 42 , and the fluid flowing through the flow path 24 of the processing section 20 is irradiated with the ultraviolet rays.

On the front surface of the cover member 50, a channel 39 is formed as a connecting channel connecting the channel 24 and the channel 33 described later between the cover member 50 and the first flange 301 described later. Note that the cover member 50 is not particularly limited as long as it has transparency to light in the deep ultraviolet region and is less likely to deteriorate. In addition, the cover member 50 may have an antifouling film formed on the surface on the side of the flow path 24 to prevent the adhesion of a minute amount of components contained in the fluid. An antireflection film may be provided to increase the transmittance of the film.

The connection member 10 is formed in a cylindrical shape and connects the upstream channel member 4 and the channel 24 of the processing section 20 . The connection member 10 supports one end of the tubular member 21 via, for example, an O-ring (not shown). One end of a housing member 23 is fixed to the outer peripheral portion of the connecting member 10 . Between the upstream channel member 4 and the channel 24 of the processing section 20, a rectifying plate 11 that regulates the flow of the fluid flowing from the upstream channel member 4 may be provided.

The flow path member 30 is configured by integrally fastening a first flange 301 and a second flange 302 via a fastening member (not shown). The first flange 301 is arranged on the processing section 20 side, and the second flange 302 is arranged on the side opposite to the processing section 20 .

A fluid flow path is formed in the flow path member 30 to allow the flow path 24 of the processing section 20 and the external downstream flow path member 5 to communicate with each other. Here, an example of the fluid flow path of the flow path member 30 will be described with reference to FIGS. 2 to 5. FIG.

FIG. 3 is a cross-sectional view taken along line AA of FIG. FIG. 4 is a cross-sectional view along BB in FIG. FIG. 5 is a cross-sectional view taken along line CC of FIG.

As shown in FIGS. 2 and 3, the second flange 302 has a circular shape when viewed in the Z-axis direction, and has a through hole 35 penetrating in the Z-axis direction at its central portion. A cover member 50 is held and fixed on the front side of the through-hole 35 , that is, on the Z-axis negative direction side. That is, the through hole 35 is an example of a holding portion that holds the cover member 50 . In addition, the light source unit 40 is detachably attached to the through hole 35 positioned on the rear side of the cover member 50, that is, on the positive Z-axis side.

As shown in FIGS. 3 and 5, the second flange 302 has a channel 33 that surrounds the through-hole 35 and extends in the Z-axis direction, and a through-hole 35 to which the light source unit 40 is attached. A channel 34 is formed extending radially (here, in the Y-axis direction) from the side. The downstream channel member 5 is connected to the channel 34 , and the channel 33 communicates with the outside of the fluid sterilizer 1 via the channel 34 .

On the other hand, as shown in FIGS. 2 and 4, the first flange 301 has a circular shape when viewed from the Z-axis direction, and penetrates through the central portion thereof in the Z-axis direction to 24 , and a plurality of flow paths 32 radially extending from the flow path 31 toward the outer peripheral side of the first flange 301 .

By fastening the first flange 301 and the second flange 302, the flow channel member 30 has the radially extending tip portions of the flow channels 32 shown in FIG. 4 and the flow channels 33 shown in FIG. communicate with each other. As a result, the fluid supplied from the upstream channel member 4 to the inside of the fluid sterilizer 1 according to the embodiment is routed through the current plate 11→channel 24→channel 31→channel 39→channel 32→channel 33. →It flows out to the channel of the downstream side channel member 5 via the channel 34 . The fluid that has flowed into the flow path member 30 flows out to the downstream flow path member 5 while absorbing heat generated by the light source unit 40 attached to the through hole 35 when passing through the flow path 33 .

That is, the fluid that is sterilized by being irradiated with the ultraviolet rays emitted by the light source 42 in the flow path 24 flows through the flow path 24 of the tubular member 21 toward the light emitting surface side of the light source 42 , and the first flange 301 flows into the flow path 39 along the light emitting surface of the light source 42 through the flow path 31 penetrating through the light source part 40 side outflow. As a result, the light source unit 40 having the light source 42 can be indirectly cooled by using the fluid passing through the flow path 33 located on the side of the light source unit 40 attached to the through hole 35 without using other cooling means. but efficiently cooled. In addition, by cooling the light source 42 using the fluid passing through the flow path 33 without using other cooling means, for example, the fluid sterilization apparatus 1 can be operated without using other cooling members such as radiation fins. Temperature rise can be suppressed.

The flow path member 30 can be made of SUS, for example. Further, instead of SUS, the flow path member 30 may be made of copper or aluminum, which have good thermal conductivity. In the above-described embodiment, the flow path member 30 is composed of the first flange 301 and the second flange 302, but may be composed of three or more members, or may be composed of one member.

Moreover, the support member 41 that is attached to the through hole 35 and supports the light source 42 is preferably made of a thermally conductive member having a thermal conductivity equal to or higher than a predetermined value, such as copper or SUS. Heat generated by the light source 42 is transferred to the fluid flowing through the flow path member 30 via the support member 41, and the fluid can cool the light source 42 more efficiently.

The number of light sources 42 mounted on the substrate 43 is not limited to the number and size shown in FIG. 3, and may be changed as required. Also, the number of flow paths 32 is not limited to the number shown in FIG. 4, and may be changed as necessary. Furthermore, the shape of the channel 33 is not limited to the annular shape shown in FIG. .

(Removal of light source)
Next, attachment/detachment of the light source unit 40 attached to the flow path member 30 will be described. FIG. 6 is a schematic diagram showing the mounting portion according to the first embodiment. FIG. 7 is a schematic cross-sectional view showing how the light source section according to the first embodiment is mounted. 6, 7, and FIGS. 8 to 10, which will be described later, illustration of each channel formed in the channel member 30 is omitted.

As shown in FIG. 6, the mounting portion 36 is a female screw formed in the through-hole 35 of the flow path member 30 (see FIG. 2, for example). A male screw 45 that is screwed with the mounting portion 36 is formed on the outer peripheral surface of the support member 41 that constitutes the light source portion 40 . That is, the light source section 40 and the flow path member 30 are fastened and fixed by screwing the mounting section 36 and the male screw 45 together.

In the example shown in FIG. 7, the inside of the support member 41 is hollow for weight reduction, but the support member 41 may be formed solid in consideration of heat dissipation.

In addition, for example, the light source unit 40 may be attached with a sealing member such as a rubber packing sandwiched between the light source unit 40 and the flow path member 30 . This makes it possible to suppress leakage of the fluid to the light source section 40 .

(Second embodiment)
Next, a fluid sterilizer 1A according to a second embodiment will be described with reference to FIG. FIG. 8 is a schematic cross-sectional view showing the mounting portion according to the second embodiment.

A fluid sterilizer 1A according to the second embodiment differs from the fluid sterilizer 1 according to the first embodiment in the manner in which the light source section 40 and the flow path member 30 are fixed. Specifically, in the fluid sterilizer 1A according to the second embodiment, the mounting portion 36a is a hook extending along the peripheral wall of the through-hole 35 of the channel member 30a and protruding inward.

On the other hand, the mounting member 41a connected to the support member 41 is provided with a keyhole portion 45a on the outer peripheral surface thereof to be engaged with the mounting portion 36a. That is, in the fluid sterilizer 1A according to the second embodiment, the light source section 40a is fixed to the mounting section 36a by engaging the keyhole section 45a provided in the light source section 40a with the mounting section 36a.

As a result, according to the fluid sterilizer 1A according to the second embodiment, it is possible to fix the light source part 40a and the flow path member 30a without using a separate fixture (see the right diagram of FIG. 8). . In other words, since the light source section 40a and the flow path member 30a can be easily attached and detached, it is possible to easily replace the parts.

(Third Embodiment)
Next, a fluid sterilizer 1B according to a third embodiment will be described with reference to FIG. FIG. 9 is a schematic cross-sectional view showing the mounting portion according to the third embodiment. As shown in FIG. 9, in the fluid sterilizer 1B according to the third embodiment, the hook portion 45b extends along the side wall of the light source portion 40b and protrudes toward the outer wall side.

A mounting portion 36b that engages with the hook portion 45b is formed on the inner wall of the channel member 30b. In the fluid sterilizer 1B according to the third embodiment, the light source section 40b is fixed to the flow channel member 30b by engaging the hook portion 45b with the mounting portion 36b provided on the flow channel member 30b.

Even in such a case, the light source section 40b and the flow path member 30b can be easily attached and detached, so that the parts can be easily replaced. In addition, in the above-described second embodiment, the shapes of the keyhole portion 45a and the mounting portion 36a may be interchanged. Similarly, in the third embodiment, the shapes of the hook portion 45b and the mounting portion 36b may be interchanged. Even in such a case, it is possible to fix the light source sections 40a and 40b and the mounting sections 36a and 36b without using fixtures.

(Fourth embodiment)
Next, a fluid sterilizer 1C according to a fourth embodiment will be described with reference to FIG. FIG. 10 is a schematic diagram showing a mounting portion according to the fourth embodiment. As shown in FIG. 10, in the fluid sterilizer 1C according to the fourth embodiment, the fixing portion 45c is an insertion portion that protrudes from the light source portion 40c toward the flow path member 30c. It has a claw portion 46 protruding along.

On the other hand, the flow path member 30c has a mounting portion 36c as an insertion hole into which the fixing portion 45c is inserted. For example, the mounting portion 36c has an engaging portion 17 that engages with the claw portion 46 when rotated in a predetermined direction with the fixing portion 45c inserted.

In the example shown in FIG. 10, when the fixing portion 45c is rotated clockwise while the fixing portion 45c is inserted into the mounting portion 36c, the claw portion 46 and the engaging portion 17 are engaged with each other. This makes it possible to fix the light source section 40c to the flow path member 30c.

Thus, in the fluid sterilizer 1C according to the fourth embodiment as well, it is possible to fix the light source part 40c and the flow path member 30c without using fixtures, so that parts can be easily replaced. can be done.

6 to 10 are merely examples, and the present invention is not limited to these. That is, other fixing modes may be used as long as the mounting section has a structure in which the light source section and the flow path member are engaged and fixed. Since the mounting part has a structure in which the light source part and the flow path member are engaged and fixed, the light source part can be detachably fixed to the flow path member, and the light source part can be easily attached to the flow path member. In addition, the light source 42 provided in the light source section can be mounted substantially in the center of the flow channel member when viewed in a cross section perpendicular to the direction in which the flow channel member extends. It becomes easy to perform the positioning appropriately, and the deterioration of the sterilization performance due to the replacement of the light source can be suppressed.

(Fifth embodiment)
Next, a fluid sterilizer 1D according to a fifth embodiment will be described with reference to FIGS. 11 to 14. FIG. FIG. 11 is a cross-sectional view showing a fluid sterilizer according to a fifth embodiment. 12 is a cross-sectional view taken along line DD of FIG. 11. FIG. FIG. 13 is a cross-sectional view taken along line EE of FIG. 14 is a cross-sectional view taken along the line FF of FIG. 11. FIG.

In the fluid sterilizer 1 according to the first embodiment, the light source unit 40 is detachable in the Z-axis direction along the length direction of the tubular member 21 that constitutes the processing unit 20. The fluid sterilizer 1D according to the embodiment is different in that the light source unit 40 is detachable in the radial direction intersecting the length direction of the tubular member 21, here in the X-axis direction.

Specifically, as shown in FIGS. 12 and 13, the second flange 302 that constitutes the flow path member 30 has a through hole 38 that penetrates in the X-axis direction and allows attachment and detachment of the light source section 40 . Further, the second flange 302 is formed so as to avoid the through-hole 38 so as to avoid the through-hole 38 so as to face each other with the light source unit 40 interposed therebetween in the Y-axis direction.

Further, as shown in FIG. 14 , the flow path 33 a communicates with the downstream flow path member 5 on the rear side of the light source section 40 . In such a fluid sterilizer 1D as well, by cooling the light source 42 using the fluid passing through the flow path 33a, the temperature of the fluid sterilizer 1 can be reduced without using other cooling members such as radiation fins, for example. rise can be suppressed.

Although the fluid sterilizer 1D according to the fifth embodiment is illustrated as having a substantially prismatic shape, the shape is not limited to this, and may be, for example, a columnar shape.

(Sixth embodiment)
Next, a fluid sterilizer 1E according to a sixth embodiment will be described with reference to FIG. FIG. 16 is a cross-sectional view showing a fluid sterilizer according to a sixth embodiment.

As shown in FIG. 15, in a fluid sterilizer 1E according to the sixth embodiment, a medium flow path 412 is formed inside a support member 41, and a medium flow path 412 is formed on the back side 414 of the support member 41. are formed with openings 411 and 413 connected to the . A pipe (not shown) connected to the cooling device 60 is connected to the openings 411 and 413 .

Here, the cooling device 60 is, for example, a chiller. The cooling device 60 circulates the heat medium with the medium flow path 412 . The heat transfer medium is, for example, clean water different from the process fluid. Specifically, the cooling medium supplied to the opening 411 from the cooling device 60 undergoes heat exchange with the support member 41 as it passes through the medium flow path 412 and is discharged from the opening 413 . Thereby, the temperature rise of the light source 42 via the supporting member 41 can be further suppressed.

For example, instead of the medium flow path 412 , a through hole penetrating from the rear surface 414 to the front surface 415 of the support member 41 may be provided. In such a case, if dry air, for example, is passed as a heat medium from the through-hole of the support member 41 to the space 49 on the front surface 415 side of the support member 41, for example, dew condensation on the cover member 50 can be prevented or eliminated, and the sterilization performance can be improved. decrease in

As described above, the fluid sterilizer 1 according to the embodiment includes the processing section 20 , the light source section 40 , the cover member 50 and the flow path member 30 . The processing unit 20 processes fluid. The light source unit 40 has a light source 42 that irradiates ultraviolet rays toward the processing unit 20 and a support member 41 that supports the light source 42 . The cover member 50 is arranged on the front side of the light source section 40 and protects the light source 42 from the fluid. The channel member 30 has a holding portion that holds the cover member 50 and a fluid channel that communicates the processing portion 20 with the outside. At least part of the fluid flow path is located on the side of the light source section 40 , and the light source section 40 and the flow path member 30 are in thermal contact with each other. The flow path member 30 has a mounting section to which the light source section 40 is detachably mounted. Therefore, it is possible to easily replace the light source unit 40 while suppressing the temperature rise of the light source 42 .

Further, the flow path member 30 according to the embodiment extends to the rear side of the light source section 40 , and the light source section 40 is attached to the flow path member 30 from the side surface side of the cover member 50 . Therefore, it is possible to easily replace the light source unit 40 while suppressing the temperature rise of the light source 42 .

Moreover, the support member 41 according to the embodiment has a medium flow path 412 for circulating a heat medium different from a fluid. Therefore, the temperature rise of the light source 42 can be further suppressed.

Further, the channel member 30 according to the embodiment has an opening of the fluid channel on the side of the light source section 40 . Therefore, it is possible to reduce the size while ensuring the sterilization performance.

It should be noted that the flow direction of the fluid in the channel member 30 is not limited to the illustrated direction, and may be the opposite direction. That is, the channel member 30 may be connected to the upstream channel member 4 and the connecting member 10 may be coupled to the downstream channel member 5 .

Also, the fluid sterilizer according to each embodiment may be used in any orientation. For example, the channel member 30 may be used upward and the connecting member 10 downward, or the connecting member 10 may be upward and the channel member 30 downward. Furthermore, the tubular member 21 may be arranged so that its longitudinal direction is horizontal, or it may be used even if it is inclined.

While several embodiments of the invention have been described, these embodiments have been presented by way of example and are not intended to limit the scope of the invention. These embodiments can be implemented in various other forms, and various omissions, replacements, and modifications can be made without departing from the scope of the invention. These embodiments and their modifications are included in the scope and spirit of the invention, as well as the scope of the invention described in the claims and equivalents thereof.

Reference Signs List 1, 1A to 1E fluid sterilizer 20 treatment section 21 tubular member 30 channel member 40 light source section 41 support member 42 light source 50 cover member 60 cooling device

Claims (4)

a processing unit having a first flow path for processing a fluid;
a light source unit that includes a light source that irradiates ultraviolet rays toward the processing unit and a support member that supports the light source;
a cover member disposed on the front side of the light source unit and protecting the light source from fluid;
a channel member having a holding portion that holds the front cover member and a fluid channel that communicates the processing portion with the outside;
and
The flow path member is
a first flange disposed on the processing section side;
a second flange disposed on the side opposite to the processing section across the first flange;
has
The first flange is
a second flow path penetrating from the processing section side toward the second flange side and communicating with the first flow path;
a plurality of third flow paths radially extending from the second flow path toward the outer peripheral side of the first flange;
has
The second flange is
a through hole penetrating from the first flange side toward the side opposite to the first flange;
a fourth flow path that annularly surrounds the perimeter of the through-hole and extends from the first flange side toward the side opposite to the first flange so as to communicate with the third flow path;
has
at least a portion of the fourth flow path is positioned to the side of the front light source section, and the light source section and the flow path member are in thermal contact;
The fluid sterilizer, wherein the through-hole has a mounting section to which the light source section is detachably mounted. 2. The fluid sterilizer according to claim 1, wherein said channel member extends to the back side of said light source. 3. The fluid sterilizer according to claim 1, wherein said support member has a medium flow path for circulating a heat medium different from said fluid. The fluid sterilizer according to any one of claims 1 to 3, wherein the channel member has an opening of the fluid channel on the side of the light source.

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