WO2002059048A1

WO2002059048A1 - Ultraviolet ray liquid processing device

Info

Publication number: WO2002059048A1
Application number: PCT/JP2002/000519
Authority: WO
Inventors: Koji Nakano; Yuji Yamakoshi
Original assignee: Photoscience Japan Corporation
Priority date: 2001-01-26
Filing date: 2002-01-24
Publication date: 2002-08-01
Also published as: CN1455759A; KR20020082491A

Abstract

An ultraviolet ray liquid processing device, comprising a pipeline (1) for passing processed liquid (P) therethrough, a light transmitting lamp protective tube (4) disposed in the pipeline (1) and coming into contact with the processed liquid (P), and an ultraviolet ray lamp (5) stored in the lamp protective tube (4), wherein a ballast (8) for ultraviolet ray lamp is disposed in proximity to the outer surface of the pipeline (1) so that heat can be radiated to the pipeline (1) so as to efficiently radiate the heat from the ballast (8) by the cooling effect of the processed liquid or heat radiation medium (for example, coolant C) which may be provided between the outer surface of the pipeline (1) and the ballast (8).

Description

Ming UV liquid processing equipment

The present invention relates to an ultraviolet liquid treatment apparatus and method for performing liquid treatment such as sterilization and disinfection of bacteria and the like in a liquid to be treated by ultraviolet irradiation, or oxidative decomposition of trace organic substances or decomposition of hardly decomposable organic substances. It relates to an improved arrangement of ballasts for lighting lamps. Background technology

Liquid treatment such as sterilization and disinfection of bacteria and the like in the liquid to be treated by ultraviolet irradiation.Ultraviolet liquid treatment equipment or system, semiconductor industry pure water production line, pharmaceutical industry sterile water production line, food industry water sterilization line, It is applied in various fields such as fisheries, aquaculture water sterilization line, drainage and sewage treatment line. The ultraviolet lamp used for the treatment is immersed in the liquid to be treated while being housed in a liquid-tight manner in a transparent hard lamp protection tube made of quartz glass. In this case, there is an open channel installation type that installs an ultraviolet lamp in the open channel through which the liquid to be treated flows, and a closed channel that installs the ultraviolet lamp in a closed channel such as a pipe through which the liquid to be treated flows or a closed tube (in a closed pipe There is an installation type. Lighting of the ultraviolet lamp is performed by generating a predetermined high-frequency signal from a commercial AC source via a lighting ballast and supplying the high-frequency signal to the ultraviolet lamp.

In the conventional ultraviolet liquid treatment equipment, the ballast for lighting the lamp is separated from the ultraviolet lamp and placed in the power supply box, and is output from each ballast provided for each ultraviolet lamp. High frequency signals are supplied to each ultraviolet lamp via individual wiring. In this case, in the case where the ultraviolet lamp is installed in the sealed tube, at both ends of the sealed tube through which the liquid to be treated passes, the space inside the sealed tube is shut off in a liquid-tight manner and communicates with the space inside the lamp protection tube. In state A maintenance force par is provided, and wiring from the ballast is electrically connected to the ultraviolet lamp in the lamp protection tube via a socket in the maintenance cover. Also, the lamp is replaced by attaching and detaching the socket at the location of the maintenance cover, and inserting and removing the ultraviolet lamp from the lamp protection tube.

Since the lamp ballast generates considerable heat when the lamp is energized, it is necessary to take thorough heat dissipation measures. Therefore, a radiator fin or radiator plate is attached to each ballast, and a cooling fan is installed in a power supply box containing these ballasts. As a result, the size of each ballast becomes bulky and the cooling fan becomes bulky, so that the problem of increasing the overall size of the power supply box cannot be avoided. In addition, the fan inside the power supply box causes dust contamination, which requires periodic maintenance.Considering the life of the fan, periodic maintenance is also necessary. was there. Also, since the wiring that is exposed from the power supply box to the lamp is the high-frequency output wiring from the ballast, there is also a problem of high-frequency noise.

The present invention has been made in view of the above points, and has as its object to provide an ultraviolet liquid processing apparatus and method capable of solving at least one of the various problems described above.

An ultraviolet liquid processing apparatus according to the present invention includes: a pipe through which a liquid to be processed passes; a translucent lamp protection pipe disposed in the pipe and in contact with the liquid to be processed; and a lamp housed in the lamp protection pipe. An ultraviolet liquid processing apparatus for processing the liquid to be processed by ultraviolet light irradiated from the ultraviolet lamp, wherein the ballast for the ultraviolet lamp is capable of radiating heat to the pipeline. It is characterized by being located close to the outer surface of the pipeline. According to this configuration, the ballast of the ultraviolet lamp is arranged close to the outer surface of the pipe through which the liquid to be treated passes, so that the ballast does not directly contact the liquid to be treated in the pipe. The heat dissipation of the ballast can be promoted by the cooling effect by indirectly contacting the liquid to be treated via The heat radiating means of the ballast can be made unnecessary or its size can be reduced, and the size of the ballast can be reduced. In conjunction with this, the need for heat-dissipating means for ballasts can be eliminated or the size of the ballast can be reduced, which reduces the necessity of the prior art in which ballasts had to be housed in a power supply box for heat dissipation measures. By avoiding the problem and being able to place the ballast on the side of the pipeline separately from the power supply box, the size of the power supply box can be made considerably smaller than before. Therefore, it is possible to provide an easy-to-use ultraviolet liquid processing apparatus which does not take up the installation area of the power supply box and is easily applicable to a narrow installation place. In order to supplement the cooling effect of the ballast, a cooling fan may be further provided at an appropriate place outside the pipeline as needed, but in such a case, a small fan is sufficient.

In one embodiment of the present invention, a plurality of the ultraviolet lamps are provided, and at least one ballast for a single lamp is arranged on an outer surface of the conduit in correspondence with at least one ultraviolet lamp. It is characterized by having. In this case, the ballast for a single lamp does not directly contact the liquid to be treated in the pipe line, but indirectly contacts the liquid to be treated in the pipe, so the cooling effect is appropriate without a special radiating fin or radiating plate. Can be obtained.

In another embodiment of the present invention, a plurality of the ultraviolet lamps are provided, and the ballast for multiple lamps corresponding to at least two ultraviolet lamps is disposed on an outer surface of the conduit. It is characterized by having. In this case, the ballast for multiple lamps does not come into direct contact with the liquid to be treated in the pipe, but it comes into contact with the liquid to be treated in the pipe indirectly. The effect can be obtained.

Still another embodiment of the present invention is characterized in that the ballast is disposed on the outer surface of the conduit with an adhesive having good heat conductivity. In this case, the bottom of the ballast can be attached to the outer surface of the pipeline with an adhesive with good thermal conductivity, so that the heat of the ballast can be transferred to the pipeline via the adhesive with good thermal conductivity. Heat can be radiated to the outer surface. Thereby, a sufficient cooling effect can be obtained by indirectly contacting the liquid to be treated in the sealed tube. Still another embodiment of the present invention is characterized in that the ballast is arranged with a soft heat-conductive cushioning material interposed between the ballast and an outer surface of the pipeline. In this case. The flat bottom surface of the ballast can be in close contact with the curved surface of the outer periphery of the pipeline via a soft heat-absorbing soft cushioning material. The heat can be dissipated to the outer surface of the pipeline via. Thus, a sufficient cooling effect can be obtained by indirect contact with the liquid to be treated in the pipeline.

According to still another embodiment of the present invention, the ballast is disposed with a heat radiating medium interposed between the outer surface of the conduit and the ballast. As an example, a heat radiating medium container (for example, a cooling liquid tank) is formed on the outer surface of the pipe, a cooling medium (for example, a cooling liquid) is stored in the heat radiating medium container, and a ballast is provided in contact with the heat radiating medium container. It is good to arrange.

An ultraviolet liquid processing apparatus according to another aspect of the present invention includes: a pipe through which a liquid to be processed passes; a translucent lamp protection pipe disposed in the pipe and in contact with the liquid to be processed; An ultraviolet lamp housed in the radiator, a radiator including a radiator, and a stabilizer for the ultraviolet lamp disposed in contact with the radiator and radiating heat via the radiator. The part is disposed close to the outer surface of the conduit so that heat can be dissipated to the conduit. Also in this case, the same effects as described above can be obtained. In other words, the heat radiating section is arranged close to the outer surface of the conduit through which the liquid to be treated passes, so that the heat of the heat radiating medium that has deprived the heat of the ballast can be efficiently cooled by the cooling heat of the liquid to be treated. Can be. Therefore, heat can be more efficiently dissipated than a conventional heat dissipating means such as a heat dissipating fin that dissipates heat into the air. Further, the method according to the present invention may further include: a pipe through which the liquid to be processed is passed; a light-transmissive lamp protection pipe disposed in the pipe and in contact with the liquid to be processed; An ultraviolet liquid processing apparatus for processing the liquid to be processed with ultraviolet light emitted from the ultraviolet lamp, the method comprising: arranging a ballast for the ultraviolet lamp; It is characterized in that it is arranged close to the outer surface of the pipeline so that heat can be released to the pipeline. BRIEF DESCRIPTION OF THE FIGURES

FIG. 1 is a schematic cross-sectional view showing one embodiment of the present invention in an ultraviolet liquid processing apparatus of a type in which a liquid to be processed is passed through a pipeline;

FIG. 2 is a schematic sectional perspective view showing another embodiment of the present invention,

FIG. 3 is a schematic cross-sectional perspective view showing still another embodiment of the present invention,

Fig. 4 is an explanatory diagram showing an example in which an adhesive is interposed between the ballast and the outer surface of the pipeline, and Fig. 5 is an example in which a cushioning material is interposed between the ballast and the outer surface of the pipeline. FIG. 6 is an explanatory view showing an example of attaching a ballast to an outer surface of a pipe via a buffer using a metal fitting,

FIG. 7 is a schematic perspective view showing still another embodiment of the present invention,

FIG. 8 is an enlarged sectional view showing a part of the coolant tank and the ballast box in FIG. BEST MODE FOR CARRYING OUT THE INVENTION

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

FIG. 1 is a schematic cross-sectional view showing an embodiment of the present invention in an ultraviolet liquid processing apparatus of a type in which ultraviolet light is processed through a liquid P to be processed in a sealed pipeline 1. The pipe 1 through which the liquid P to be treated passes (hereinafter referred to as a “sealed pipe” for convenience) is sealed in a liquid-tight manner at both ends by seals 2 and 3, and the liquid P to be treated taken from the liquid inlet 1a is introduced into the pipe. Through the liquid outlet 1b. In the sealed tube 1, an ultraviolet lamp 5 is arranged in a liquid-tight manner into a transparent hard lamp protection tube 4 made of quartz glass. The end covers 6 and 7 provided at both ends of the sealed tube 1 are liquid-tightly shut off from the internal space of the sealed tube 1 via the seal portions 2 and 3, and the internal space of the lamp protection tube 4. Is in a state of communication. That is, both ends of the lamp protection tube 4 pass through the seal portions 2 and 3 and face the spaces in the end covers 6 and 7, whereby the ultraviolet lamp 5 can be replaced at the time of replacement. It can be put in and out from the end of. The covers 6 and 7 can be freely opened and closed by a well-known structure (not shown). Released. The ballast 8 for lighting the ultraviolet lamp 5 is arranged at an appropriate place close to the outer periphery of the sealed tube 1. Normally, the sealed tube 1 is made of a metal having good heat conductivity such as stainless steel.

The function of the ballast 8 itself is to convert a commercial AC signal into a DC signal, convert the DC signal into a predetermined high-frequency signal for lighting a lamp, and output the same, as in a known device. Although the ballast 8 in the example of FIG. 1 does not directly contact the liquid to be treated in the sealed tube 1, it comes into indirect contact with the liquid to be treated via the sealed tube 1 by being in close contact with the outer periphery of the sealed tube 1. . As a result, the sealed pipe 1 is cooled by the liquid to be treated, so that a corresponding cooling effect can be obtained without any special radiating fins or radiating plates. In the known ballast for lighting, it was necessary to provide a heat radiating fin or heat radiating plate. In this embodiment, however, there is no need to provide a heat radiating fin or heat radiating plate in the ballast 8, and the size is reduced accordingly. It can be easily mounted on the sealed tube 1. In order to replenish the cooling effect, a cooling fan 9 may be provided at an appropriate place outside (outside surface) of the sealed tube 1. In such a case, a small fan can be used as the fan 9 because a supplementary cooling effect can be obtained.

The ballast 8 is connected to a wiring for taking in a commercial AC signal from the outside. However, since the external wiring for this is for the commercial AC signal, there is no problem such as high frequency noise. The high-frequency signal for lighting generated from the ballast 8 is supplied to the corresponding ultraviolet lamp 5 in the lamp protection tube 4 via an appropriate wiring and a socket connector. In this case, since the distance between the ballast 8 and the ultraviolet lamp 5 is short, the problem of high-frequency noise is small.

In FIG. 1, only one ultraviolet lamp 5 is shown. However, as shown in FIG. 2, a plurality of ultraviolet lamps 5 as needed (in the illustrated example, 3 are inserted in each lamp protection tube 4. In that case, a plurality of ballasts 8 are arranged outside the sealed tube 1 corresponding to the respective ultraviolet lamps 5. Each ballast 8 is a ballast for a single lamp, and the high-frequency signal for lighting generated from each ballast 8 is supplied to the lamp protection tube 4 via a suitable wiring and a socket connector. Provide corresponding UV lamp 5 Be paid. Each ballast 8 shown in FIG. 2 does not directly contact the liquid P to be treated in the sealed tube 1, but is in close contact with the outer periphery of the sealed tube 1 to conduct heat to the liquid to be treated via the sealed tube 1. It is sexually indirectly closely related. As a result, the sealed pipe 1 is cooled by the liquid to be treated, so that a suitable cooling effect can be obtained without a special heat radiation fin or heat radiation plate. Of course, in order to supplement the cooling effect, a cooling fan (not shown) may be provided at an appropriate place outside the sealed tube 1. In such a case, a small fan can be used, as long as it can provide a supplementary cooling effect.

Although FIG. 2 shows the ballast 8 for a single lamp, the ballast 8 may be used as a ballast for a multi-lamp for lighting two or more ultraviolet lamps 5. As an example, the ballast 8 is used as a ballast for multiple lamps of three ultraviolet lamps 5 as shown in FIG. Also in this case, the ballast 8 is arranged in close contact with the outer periphery of the sealed tube 1. In this case, the lighting high-frequency signal generated from the ballast 8 is supplied to the corresponding ultraviolet lamp 5 in each lamp protection tube 4 via appropriate wiring, a socket, a connector, and the like. The ballast 8 shown in FIG. 3 does not directly contact the liquid to be treated in the sealed tube 1, but indirectly contacts the liquid to be treated via the sealed tube 1 by being closely attached to the outer periphery of the sealed tube 1. As a result, the sealed tube 1 is cooled by the liquid to be treated, so that a suitable cooling effect can be obtained without a special radiating fin or radiating plate. Of course, in this case, a cooling fan (not shown) may be provided at an appropriate place outside the sealed tube 1 in order to supplement the cooling effect. In such a case, a small fan can be used as long as a supplementary cooling effect can be obtained.

FIG. 4 shows an example in which a good heat conductive adhesive 10 is interposed between the ballast 8 and the sealed tube 1. For example, an adhesive mainly containing silicon is used. In this case, when the bottom surface of the ballast 8 is flat and the outer periphery of the sealed tube 1 is a curved surface, the flat bottom surface of the ballast 8 is attached to the curved surface of the outer periphery of the sealed tube 1 via the adhesive 10. The bottom surface can be tightly adhered to the curved surface of the outer periphery of the sealed tube 1 via a good heat conductive adhesive 10 without any gap. By heat Good conductivity can be maintained. Thereby, the heat of the ballast 8 can be radiated to the outer surface of the sealed tube 1 via the adhesive 10, and a sufficient cooling effect can be obtained by indirectly contacting the liquid to be treated in the sealed tube 1. Can be. If the bottom surface of the ballast 8 is a curved surface having the same radius of curvature as the curved surface of the outer circumference of the sealed tube 1, a good heat conductive adhesive 10 is uniformly applied to the bottom surface of the ballast 8, The bottom surface can be brought into close contact with the curved surface of the outer periphery of the sealed tube 1 without any gap, and thus a sufficient cooling effect can be obtained by indirectly contacting the liquid to be treated in the sealed tube 1. Fig. 5 shows an example in which a soft heat absorbing material 11 having good thermal conductivity is interposed between the ballast 8 and the sealed tube 1. As an example of the cushioning material 11, A thick, thermally deformable sheet with good thermal conductivity is used. In this case, when the bottom surface of the ballast 8 is flat and the outer periphery of the sealed tube 1 is a curved surface, the flat bottom surface of the ballast 8 is provided with a clearance between the curved surface of the outer periphery of the sealed tube 1 via the cushioning material 11. The heat conduction can be maintained satisfactorily by the close contact between the entire bottom surface of the ballast 8 and the curved surface on the outer periphery of the sealed tube 1 because the ballast 8 can be in close contact. As a result, the heat of the ballast 8 can be radiated to the outer surface of the sealed tube 1 via the buffer material 11, and a sufficient cooling effect can be obtained by indirectly contacting the liquid to be treated in the sealed tube 1. Can be. When attaching the stabilizer 8 to the curved surface of the outer circumference of the sealed tube 1 via the buffer material 11, apply a good heat conductive adhesive to the buffer material 1 1 A belt may be wound around the outer surface. Alternatively, a ballast 8 having a buffer material 11 interposed between the outer surface of the sealed tube 1 and the outer surface of the sealed tube 1 may be attached to the outer surface of the sealed tube 1 by using a metal fitting or the like. As an example, as shown in FIG. 6, a pair of pedestals 12 a and A ballast 12 is provided between the pair of pedestals 12a and 12b, and a ballast 8 is arranged on the outer surface of the sealed tube 1 with a cushioning material 11 interposed therebetween. Attach one of the L-shaped brackets 13a and 13b to each of the side surfaces, and screw the other of the L-shaped brackets 13a and 13b to the corresponding pedestals 12a and 12b. Appropriate fixing means such as patching (in the example shown, screwing is shown) Fix with 14a and 14b. In this way, the ballast 8 By mounting the ballast on the outer circumference of the sealed tube 1, the flat bottom surface of the ballast 8 can be tightly adhered to the curved surface of the outer circumference of the sealed tube 1 via the cushioning material 11. The cushioning material 11 is not limited to an elastic body, and may be another material having good heat conductivity (a substance having a heat radiation effect).

Next, still another embodiment of the present invention will be described with reference to FIGS. FIG. 7 is a schematic perspective view, and FIG. 8 is a partially enlarged sectional view. A coolant tank 20 is tightly fixed to a predetermined location on the outer surface of the sealed pipe 1 by welding or the like, and the coolant tank 20 is filled with a predetermined coolant C in a liquid-tight manner. The coolant tank 20 is made of a metal having good heat conductivity such as stainless steel, similarly to the closed pipe 1. A ballast box 21 is arranged in contact with the cooling liquid tank 20, and a ballast 8 is arranged in the ballast box 21. The ballast 8 is fixed in the ballast box 21 so as to be in close contact with the wall of the coolant tank 20, and is cooled by the internal coolant C through the good heat conductive wall of the coolant tank 20. You. The cooling liquid C is once heated by removing heat from the ballast 8, but is cooled immediately by the liquid P to be treated flowing through the closed pipe 1 because it is in close contact with the wall of the closed pipe 1. The cooling medium (that is, the heat radiation medium) to be filled in the cooling liquid tank 20 is not limited to a liquid, but may be a gel-like one or a fixed medium. In short, any medium having a cooling effect (that is, a heat radiation effect) Good. As the cooling medium C, it is preferable to use water or another predetermined cooling liquid or a substance having good heat exchange characteristics. Needless to say, the ballast box 21 can be opened and closed as appropriate, so that the internal ballast 8 can be replaced or repaired. Needless to say, the number of the ballasts 8 arranged in contact with the coolant tank 20 in the ballast box 21 is not limited to one, and is equal to the number of the ultraviolet lamps provided in the sealed tube 1. Attach the operation panel 22 including the switch etc. to an appropriate place near the ballast box 21 (for example, the place of the end cover 6 of the sealed tube 1 or the side of the ballast box 21). It is good to install. In this case, the operation panel 22 and the ballast box 21 are of course appropriately connected by electric wiring (not shown).

In the above, some embodiments of the present invention in a closed pipe installation type ultraviolet liquid processing apparatus have been described. However, the present invention is not limited to this, and an open channel installation type ultraviolet liquid processing apparatus may be used. The present invention can be applied to a body treatment apparatus.

As described above, according to the present invention, the ballast of the ultraviolet lamp is arranged close to the outer surface of the conduit through which the liquid to be treated passes, so that the ballast does not directly contact the liquid to be treated in the conduit. The heat dissipation of the ballast can be promoted by the cooling effect by indirectly contacting the liquid to be treated through the pipe, and therefore, the heat dissipation means of the ballast is not required, or The size can be reduced, and the size of the ballast can be reduced. In conjunction with that, by eliminating or reducing the heat dissipation means of the ballast, the ballast of the prior art, which had to accommodate the ballast in the power supply box for heat dissipation measures, was required. By avoiding the necessity and being able to place the ballast on the side of the pipeline separately from the power pox, the size of the power box can be considerably smaller than before. Therefore, it is possible to provide an easy-to-use ultraviolet liquid processing apparatus and method which can be applied to a small installation place without taking up the installation area of the power supply box.

Claims

The scope of the claims

1. A conduit for passing the liquid to be treated, a translucent lamp protection tube disposed in the conduit and in contact with the liquid to be treated, and an ultraviolet lamp housed in the lamp protection tube, An ultraviolet liquid processing apparatus for processing the liquid to be processed with ultraviolet light emitted from the ultraviolet lamp,

An ultraviolet liquid processing apparatus, wherein the ballast for the ultraviolet lamp is disposed close to an outer surface of the pipeline so as to be able to radiate heat to the pipeline.

2. A plurality of the ultraviolet lamps are provided, and at least one ballast for a single lamp corresponding to at least one of the ultraviolet lamps is arranged on an outer surface of the pipeline. The ultraviolet treatment device according to claim 1.

3. A plurality of the ultraviolet lamps are provided, and at least one ballast for multiple lamps corresponding to at least two ultraviolet lamps is arranged on an outer surface of the conduit. The ultraviolet liquid treatment device according to claim 1 or 2, wherein

4. The ultraviolet liquid processing apparatus according to any one of claims 1 to 3, wherein the ballast is arranged with an adhesive having good heat conductivity interposed on an outer surface of the conduit. .

5. The purple color filter according to any one of claims 1 to 4, wherein the ballast is disposed with a good heat conductive soft cushioning material interposed between the ballast and an outer surface of the pipeline. External liquid processing equipment.

6. The ultraviolet liquid processing apparatus according to any one of claims 1 to 5, wherein the ballast is disposed with a heat radiating medium interposed between an outer surface of the pipeline and the ballast. .

7. A heat dissipation medium container is arranged in contact with the outer surface of the conduit, a heat dissipation medium is accommodated in the heat dissipation medium container, and the ballast is arranged in contact with the heat dissipation medium container. Item 7. The ultraviolet liquid treatment apparatus according to Item 6.

8. The ultraviolet liquid processing apparatus according to claim 7, wherein the heat radiation medium is made of a cooling liquid, and the heat radiation medium container is made of a tank filled with the cooling liquid.

9. A conduit for passing the liquid to be treated,

A light-transmissive lamp protection tube disposed in the conduit and in contact with the liquid to be treated; and an ultraviolet lamp housed in the lamp protection tube;

A heat dissipating part including a heat dissipating medium;

A ballast for the ultraviolet lamp, which is disposed in contact with the heat radiating unit and radiates heat through the heat radiating medium;

An ultraviolet liquid processing apparatus, comprising: a heat radiating unit disposed close to an outer surface of the pipeline so as to radiate heat to the pipeline.

10. The ultraviolet liquid processing apparatus according to claim 9, wherein the heat radiating medium is made of a cooling liquid, and the heat radiating section is filled with the cooling liquid in a container.

11. A conduit for passing the liquid to be treated, a translucent lamp protective tube disposed in the conduit and in contact with the liquid to be treated, and an ultraviolet lamp housed in the lamp protective tube. An ultraviolet liquid processing apparatus for processing the liquid to be processed by ultraviolet light irradiated from the ultraviolet lamp, wherein a ballast for the ultraviolet lamp is arranged,

The method of claim 1, wherein the ballast is disposed proximate an outer surface of the conduit so that heat can be dissipated to the conduit.