JP2014221445A - Ultraviolet irradiation water treatment device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an ultraviolet irradiation water treatment device which can efficiently perform ultraviolet treatment using an ultraviolet LED.SOLUTION: An LED mounting member 12 is provided in the axial direction of the center of a cylindrical treatment tank 11, a plurality of ultraviolet LEDs 13 irradiating ultraviolet rays in the radial direction of the treatment tank 11 are provided on the outer surface of the LED mounting member 12, and an LED heat radiation part 14 is provided between the ultraviolet LEDs adjacent to each other in the circumferential direction or axial direction of the treatment tank 11. A plurality of partition plates are arranged inside the cylindrical treatment tank 11 in the radial direction from the center of the treatment tank 11 to circumferentially divide the inside of the treatment tank 11 into a plurality of passages, and the plurality of ultraviolet LEDs 13 are provided on one surfaces of the partition plates, respectively, in a state where the ultraviolet LEDs 13 irradiate ultraviolet rays in the same direction in the circumferential direction of the treatment tank 11.

Description

  The present invention relates to an ultraviolet irradiation water treatment apparatus, and more particularly, to an ultraviolet irradiation water treatment apparatus that sterilizes microorganisms in water or oxidizes organic substances using ultraviolet rays in water purification treatment or sewage treatment.

  Conventionally, an ultraviolet irradiation water treatment device has been developed to sterilize and disinfect microorganisms and pathogenic protozoa contained in water by irradiating ultraviolet rays. As this ultraviolet irradiation water treatment device, a treatment tank in which treated water circulates has been developed. In this water channel, an ultraviolet light source is installed to irradiate ultraviolet light. In recent years, ultraviolet LEDs have attracted attention as ultraviolet light sources. In an ultraviolet irradiation water treatment apparatus using an ultraviolet LED, a cooling fluid for devising the arrangement of a plurality of ultraviolet LEDs or cooling the ultraviolet LEDs in order to extend the lifetime of the ultraviolet LEDs by suppressing the temperature rise of the ultraviolet LEDs. A passage is provided (for example, refer to Patent Document 1).

JP2012-115715A

  However, in the ultraviolet irradiation water treatment apparatus described in Patent Document 1, since the cooling fluid passage is provided separately from the water treatment flow path for irradiating ultraviolet rays, the treatment tank in the ultraviolet irradiation water treatment apparatus is enlarged. In some cases, a cooling fluid to be circulated through the cooling fluid passage must be prepared, and energy for circulating the cooling fluid may be required.

  Then, this invention aims at providing the ultraviolet irradiation water treatment apparatus which can perform an ultraviolet-ray treatment efficiently using ultraviolet LED.

  To achieve the above object, a first configuration of an ultraviolet irradiation water treatment apparatus according to the present invention is an ultraviolet irradiation water treatment apparatus for irradiating treated water with ultraviolet light, and an LED mounting member in the axial direction of the center of a cylindrical treatment tank. A plurality of ultraviolet LEDs that irradiate ultraviolet rays toward the radial direction of the treatment tank on the outer surface of the LED mounting member, and between the ultraviolet LEDs adjacent to each other in the circumferential direction and the axial direction of the treatment tank, Further, the LED mounting member is provided with a heat radiating fin protruding in the radial direction of the processing tank.

  Moreover, the 2nd structure of the ultraviolet irradiation water treatment apparatus of this invention is an ultraviolet irradiation water treatment apparatus which irradiates a process water with an ultraviolet-ray, toward a radial direction from the center of a treatment tank in the inside of a cylindrical treatment tank. A plurality of partition plates are arranged to divide the inside of the processing tank into a plurality of flow paths in the circumferential direction, and one surface of each partition plate is irradiated with ultraviolet rays in the same direction in the circumferential direction of the processing tank. A plurality of ultraviolet LEDs are provided in the state.

  Furthermore, the third configuration of the ultraviolet irradiation water treatment apparatus of the present invention is the ultraviolet irradiation water treatment apparatus that irradiates the treated water with ultraviolet rays, and a plurality of ultraviolet LEDs are provided on the partition plate provided in the treatment tank, The heat dissipating fins project from the partition plate.

  According to the first configuration of the ultraviolet irradiation water treatment apparatus of the present invention, the heat of the ultraviolet LED can be dissipated from the heat radiating portion by providing the heat radiating portion between the adjacent ultraviolet LEDs, so that the temperature of the ultraviolet LED is increased. Can be suppressed. Further, according to the second configuration, by providing the ultraviolet LED on one surface of each of the plurality of partition plates arranged in the radial direction, the other surface can be cooled by the water to be treated, so that the temperature of the ultraviolet LED is increased. Can be suppressed. Furthermore, by providing the heat sink fin on the LED mounting member or the partition plate, it is possible to suppress the temperature rise of the ultraviolet LED provided on the LED mounting member or the partition plate by the heat radiation from the heat sink fin.

  By suppressing the temperature rise of the ultraviolet LED in this way, the lifetime of the ultraviolet LED can be extended. Moreover, since it is not necessary to provide a cooling fluid passage, the processing tank can be reduced in size and simplified.

It is sectional drawing of the processing tank which shows the 1st example of an ultraviolet irradiation water processing apparatus of this invention. It is a perspective view which similarly shows the arrangement | positioning state of ultraviolet LED to an LED attachment member. It is explanatory drawing which similarly shows the arrangement | positioning state of ultraviolet LED to an LED attachment member. It is sectional drawing of the processing tank which shows the 2nd form example of the ultraviolet irradiation water processing apparatus of this invention. It is sectional drawing of the processing tank which shows the 3rd example of an ultraviolet irradiation water processing apparatus of this invention. It is sectional drawing of the processing tank which shows the 4th example of the ultraviolet irradiation water processing apparatus of this invention.

  FIG. 1 thru | or FIG. 3 has shown the 1st form example of the ultraviolet irradiation water processing apparatus of this invention. The ultraviolet irradiation water treatment apparatus shown in this embodiment is a cylindrical or cylindrical LED in the axial direction at the center of a cylindrical treatment tank 11 having an inflow portion of treated water and an outflow portion of treated water (not shown). The mounting member 12 is provided, and a plurality of ultraviolet LEDs 13 are provided on the outer peripheral surface of the LED mounting member 12. As shown by arrows in FIGS. 1 to 3, the ultraviolet LED 13 is provided in a state of irradiating ultraviolet rays UV toward the radial direction of the processing tank 11 around the LED mounting member 12, and the circumferential direction of the processing tank 11. And between the ultraviolet LED13 adjacent to an axial direction, the LED thermal radiation part 14 is each provided.

  That is, as shown in FIGS. 2 and 3, the LED mounting member 12 has a structure in which a plurality of LED mounting portions 12a, 12b, 12c,... Are connected in the axial direction, and the LED mounting portion at an arbitrary position. The ultraviolet LED 13a, 13a attached to 12a is provided with an LED heat dissipating part 14a between the UV LEDs 13a adjacent in the circumferential direction in the LED attaching part 12a, and the LED attaching part adjacent to the LED attaching part 12a. Each of the ultraviolet LEDs 13b and 13b attached to 12b is provided with an LED heat dissipating part 14b between the ultraviolet LEDs 13b adjacent in the circumferential direction at the LED attaching part 12b.

  Furthermore, the LED heat dissipating part 14b provided in the LED attaching part 12b adjacent to the LED attaching part 12a is disposed at a position adjacent to the ultraviolet LED 13a attached to the LED attaching part 12a in the axial direction. Around one ultraviolet LED, other ultraviolet LEDs are not adjacent to each other, and the LED heat dissipating portions are adjacent to each other.

  Therefore, as shown in FIG. 3A, the irradiation direction of the ultraviolet LED 13a attached to the LED attachment portion 12a is 0 degree, 90 degrees, 180 degrees and 270 degrees when the upper direction is 0 degree in the figure. The irradiation direction of the ultraviolet LED 13a attached to the LED attachment portion 12b adjacent to the LED attachment portion 12a is 45 degrees, 135 degrees, 225 degrees, and 315 degrees as shown in FIG. 3B. There are four directions. Thereby, the irradiation range A of the ultraviolet UV shown by the imaginary line in FIG.

  As described above, by arranging the ultraviolet LEDs 13a, 13b,..., The temperature rise of the ultraviolet LEDs 13a, 13b,... Can be suppressed by heat radiation from the adjacent LED heat radiation portions 14a, 14b,. It is possible to uniformly irradiate ultraviolet rays over the entire area, and to reliably perform ultraviolet treatment of water to be treated.

  FIG. 4 shows a second embodiment of the ultraviolet irradiation water treatment apparatus of the present invention. In the following description, the same components as those of the ultraviolet irradiation water treatment apparatus shown in the first embodiment are denoted by the same reference numerals, and detailed description thereof is omitted.

  The ultraviolet irradiation water treatment apparatus shown in the present embodiment is provided with a plurality of ultraviolet LEDs 13 on the outer peripheral surface of the LED attachment member 12 provided at the center of the cylindrical treatment tank 11 as in the first embodiment. The radius of the processing tank 11 from between the ultraviolet LEDs 13 adjacent to each other in the circumferential direction of the member 12 or from the LED heat radiation part 14 provided between the ultraviolet LEDs 13 adjacent to each other in the circumferential direction, as in the first embodiment. A plurality of heat dissipating fins 15 project in the direction.

  The shape of the radiating fin 15 can be arbitrarily set according to the arrangement state of the ultraviolet LED 13, and the axial length of the treatment tank 11 has a length over the entire length of the LED mounting member 12. It may be the length according to the axial direction length of one LED attachment part. Further, the protruding length is arbitrary, and the thickness is also arbitrary.

  By providing such heat radiation fins 15, the contact area with the water to be treated is increased, and the heat radiation effect can be improved. Further, by twisting the entire heat dissipating fin 15 in a spiral shape, the flow path becomes longer, the contact time between the water to be treated and the ultraviolet rays can be lengthened, and the contact efficiency is improved by the stirring action of the water to be treated. I can expect.

  FIG. 5 shows a third embodiment of the ultraviolet irradiation water treatment apparatus of the present invention. In the ultraviolet irradiation water treatment apparatus shown in this embodiment, eight partition plates 21 and 21 are arranged in a radial direction from the center of the treatment tank 11 inside the cylindrical treatment tank 11. Is formed in the circumferential direction to form eight channels to be treated 22 and 22, and one surface 21 a of each partition plate 21 is irradiated with ultraviolet rays in the same direction in the circumferential direction of the treatment tank 11. A plurality of ultraviolet LEDs 13 are provided.

  Thus, by providing the ultraviolet LED 13 on the one surface 21a of the partition plate 21 that divides the inside of the treatment tank 11 in the circumferential direction, the ultraviolet light LED 13 provided on the one surface 21a flows through each treated water flow path 22. The treated water can be irradiated with ultraviolet rays, and the partition plate 21 can be cooled by the treated water flowing in the treated water flow path 22 on the other surface 21b side of the partition plate 21, so that the temperature of the ultraviolet LED 13 increases. Can be suppressed.

  In addition, the number of installed partition plates 21 can be appropriately set according to conditions such as the size of the processing tank 11. Moreover, a through hole may be provided in the partition plate 21 so that the water to be treated can flow into the adjacent flow path 22, or twisting or corrugated plate formation may be used. Thereby, a contact area with to-be-processed water becomes large, and can improve the thermal radiation effect. Further, by twisting the entire heat dissipating fin 15 in a spiral shape, the flow path becomes longer, the contact time between the water to be treated and the ultraviolet rays can be lengthened, and the contact efficiency is improved by the stirring action of the water to be treated. I can expect.

  FIG. 6 shows a fourth embodiment of the ultraviolet irradiation water treatment apparatus of the present invention. In the ultraviolet irradiation water treatment apparatus shown in this embodiment, a partition member 31 is provided inside the treatment tank 11, ultraviolet LEDs 13 are provided on both surfaces of the partition member 31, and a plurality of radiating fins 32 project from the partition member 31. It is a thing. Thus, by providing the radiation fin 32 on the partition member 31 provided with the ultraviolet LED 13, the ultraviolet LED 13 can be cooled with the water to be treated via the partition member 31 and the radiation fin 32, so that the temperature of the ultraviolet LED 13 is increased. The rise can be suppressed.

  Also in this embodiment, the number of partition members 31 installed and the shape of the radiation fins 32 can be set as appropriate according to the size and shape of the treatment tank 11, and through holes are provided in the radiation fins 32. It can also be twisted or formed into a waveform. Thereby, a contact area with to-be-processed water becomes large, and the heat dissipation effect improves. Further, by twisting the entire heat dissipating fin 15 in a spiral shape, the flow path becomes longer, the contact time between the water to be treated and the ultraviolet rays can be lengthened, and the contact efficiency is improved by the stirring action of the water to be treated. I can expect. Thereby, a contact area with untreated water becomes large and can improve a heat dissipation effect. Furthermore, by twisting the entire partition member 31 and the radiation fins 32 in a spiral manner, the flow path becomes longer, the contact time between the water to be treated and the ultraviolet rays can be lengthened, and the contact by the stirring action of the water to be treated Increased efficiency can be expected. Further, a cooling water passage may be provided inside the partition member 31.

  DESCRIPTION OF SYMBOLS 11 ... Processing tank, 12 ... LED attachment member, 12a, 12b, 12c ... LED attachment part, 13, 13a, 13b ... Ultraviolet LED, 14, 14a, 14b ... LED heat radiation part, 15 ... Radiation fin, 21 ... Partition plate, 22 ... Processed water channel, 21a ... One surface, 21b ... The other surface, 31 ... Partition member, 32 ... Radiation fin

Claims (4)

  In an ultraviolet irradiation water treatment apparatus for irradiating treated water with ultraviolet light, an LED mounting member is provided in the axial direction of the center of a cylindrical processing tank, and the outer surface of the LED mounting member is irradiated with ultraviolet light toward the radial direction of the processing tank. An ultraviolet irradiation water treatment apparatus, wherein a plurality of ultraviolet LEDs are provided, and an LED heat dissipating part is provided between the ultraviolet LEDs adjacent to each other in the circumferential direction and the axial direction of the treatment tank.   The ultraviolet irradiation water treatment apparatus according to claim 1, wherein the LED attachment member includes a heat radiation fin protruding in a radial direction of the treatment tank.   In the ultraviolet irradiation water treatment apparatus for irradiating the treated water with ultraviolet rays, a plurality of partition plates are arranged in the radial direction from the center of the treatment tank inside the cylindrical treatment tank, and the inside of the treatment tank is arranged in the circumferential direction. Ultraviolet irradiation characterized in that a plurality of ultraviolet LEDs are respectively provided in a state of irradiating ultraviolet rays toward one direction in the circumferential direction of the treatment tank on one surface of each partition plate while partitioning into a plurality of flow paths. Water treatment equipment.   In the ultraviolet irradiation water treatment apparatus for irradiating the treated water with ultraviolet rays, the ultraviolet irradiation water is characterized in that a plurality of ultraviolet LEDs are provided on a partition plate provided inside the treatment tank, and radiation fins are projected from the partition plate. Processing equipment.

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