JPH10134778A - Electrodeless discharge lamp unit and liquid treatment equipment - Google Patents

Abstract

PROBLEM TO BE SOLVED: To support a discharge tube with a simple structure. SOLUTION: A double tube structured discharge tube 11 formed by an outer tube 11a and an inner tube 11b is supported by flanges 13b1 and 13b2 in which a tip end of the inner tube 11b longer than the outer tube 11a constitutes an envelope 13 and is housed in the envelope 13 closely shielded so that flow water 100 invades. Thereby, since the discharge tube 11 is never moved mechanically stabilized in the envelope 13, the discharge tube 11 is never damaged, and flow water does not come into direct contact with the discharge tube 11. When a high-frequency current is supplied to an excitation coil 12 wound around an outer periphery of the outer tube 11a through the lead wire 15 and a discharge tube is lit, a tube wall of the discharge tube 11 is held at approximately 40 deg.C due to a heat generated from the discharge tube 11 and a heat effect of the envelope 13, ultra-violet rays are effectively irradiated from mercury in the discharge tube 11, and a sufficient quantity of ultra-violet rays are irradiated in flow water 100.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electrodeless discharge lamp unit having no electrodes and a liquid treatment apparatus for performing water treatment with ultraviolet rays emitted from the electrodeless discharge lamp unit.

[0002]

2. Description of the Related Art A conventional electrodeless discharge lamp is disclosed, for example, in Japanese Patent Publication No. 62-163297 as shown in FIG. In this example, a plurality of excitation coils 2 are arranged on the outer periphery of a cylindrical discharge tube 1 in which mercury or a rare gas is sealed.
a, 2b, 2c are wound, and these excitation coils 2a, 2c
b and 2c are connected in parallel. When a high-frequency current is supplied from the high-frequency oscillator 3 to the coils 2a, 2b, 2c of such an electrodeless discharge lamp, three light-emitting regions are formed in the cylindrical discharge tube 1, and ultraviolet rays (UV) are irradiated. .

Here, the reason for dividing the excitation coil into a plurality of parts and connecting them in parallel is that the excitation coils are parallelized,
This is because the inductance of the excitation coil as viewed from the high-frequency oscillator 3 (high-frequency power supply) is reduced so that a high voltage is not constantly applied to the excitation coil, so that the circuit design of the high-frequency oscillator 3 and the like is advantageous. .

The above-described electrodeless discharge lamp is used in a liquid processing apparatus for sterilizing sewage or the like by irradiating the same with ultraviolet rays. This liquid treatment device is a device that sterilizes flowing water using an electrodeless discharge lamp submerged in running water, but since the flowing water directly contacts the tube wall of the discharge tube as it is, the temperature of the tube wall of the discharge tube is almost the water temperature. Will decrease.

Here, FIG. 8 is a characteristic diagram showing the relationship between the coldest part of the discharge tube and the intensity of ultraviolet rays emitted from the discharge tube. According to this characteristic diagram, the coldest part of the discharge tube depends on the water temperature.
When the temperature is lowered from 0 ° C. to around 10 ° C., the intensity of the ultraviolet rays to be irradiated becomes ２〜 to ３ as compared with the case where the coldest part of the discharge tube has the strongest ultraviolet intensity around 40 ° C. I understand. Therefore, when the conventional electrodeless discharge lamp is submerged in running water, there occurs a problem that the irradiation efficiency of ultraviolet rays irradiated from mercury or a rare gas sealed in the discharge tube is reduced, or the startability is deteriorated. There is a problem that. For this reason, in a conventional liquid processing apparatus using this kind of electrodeless discharge lamp, the amount of ultraviolet rays radiated from the electrodeless discharge lamp immersed in running water is insufficient, so that the expected There is a problem that a sterilization process cannot be performed.

Therefore, in order to avoid the above-mentioned problem, the electrodeless discharge lamp is housed in a sealed container (envelope), and the container is immersed in water so that water does not directly contact the wall of the discharge tube. In addition, there is a known example in which the discharge tube is kept warm in the container so as not to lower the temperature of the tube wall of the discharge tube and not to lower the efficiency of irradiation of ultraviolet rays from the discharge tube. In such a known example, if the discharge tube is not housed in the container in a mechanically stable form, the discharge tube in the container may move, and the discharge tube may be damaged by colliding with the wall surface of the container. is there. For this reason, a support structure for fixing the discharge tube in the container is required,
If the support structure is complicated or a special member is used, there is a problem that the manufacturing cost of the electrodeless discharge lamp increases.

[0007]

As described above, a conventional electrodeless discharge lamp, which is lit by supplying a high-frequency current to an excitation coil wound around the outer periphery of a discharge tube, is housed in a vessel, and the vessel is provided with flowing water. In a liquid treatment apparatus that performs submerged sterilization by flowing water, a support structure for fixing the discharge tube in the container is required to prevent breakage of the discharge tube in the container, and this support structure is complicated, When a special member is used, there is a problem that the manufacturing cost of the electrodeless discharge lamp increases.

Accordingly, the present invention has been made to solve the above-mentioned problems. Even when used in water, the irradiation efficiency of ultraviolet rays does not decrease, and the discharge tube is supported by a simple structure with a simple structure and is inexpensive. An object of the present invention is to provide an electrodeless discharge lamp unit having high mechanical stability and a highly reliable liquid processing apparatus using the electrodeless discharge lamp unit.

[0009]

According to a first aspect of the present invention, there is provided an outer tube having a ring-shaped space portion in cross section and an inner tube which forms a hollow portion of the outer tube and is longer than the outer tube. A discharge tube in which mercury or a rare gas is sealed in the outer tube; an excitation coil wound around the outer periphery of the outer tube of the discharge tube; and at least a part of the discharge tube and the excitation coil that house the excitation coil is an ultraviolet transmitting member And a watertight container that supports both ends of the inner tube of the discharge tube on the inner wall surface; a pair of lead wires for supplying a high-frequency current to the excitation coil; and a pair of these lead wires inside the container. And one or two introduction holes having a watertight structure.

[0010] With such a configuration, the inner wall surface of the container supports both ends of the inner tube of the discharge tube, so that the discharge tube is fixed in the container, and the discharge tube cannot move in the container.
When a high-frequency current is supplied to the excitation coil in the container from the lead wire inserted into the container through the introduction hole, the discharge tube is turned on, and ultraviolet rays are emitted from the enclosed mercury or the like. At this time, even if the container is submerged in water, the temperature of the discharge tube is lower than the water temperature due to the fact that water does not directly touch the tube wall of the discharge tube and the heat generation of the discharge tube and the heat retaining effect of the container. And maintain around 40 ° C. Thereby, the temperature of mercury in the discharge tube does not decrease,
Ultraviolet radiation is emitted with good radiation efficiency.

The container according to the second aspect of the present invention comprises: a cylindrical tube formed of an ultraviolet transmitting member; and a pair of flanges for sealing an open portion of the tube; Both ends of the inner tube of the discharge tube are supported.

[0012] With such a configuration, both ends of the inner tube of the discharge tube are sandwiched and supported by the inside of the pair of flanges constituting the container, and the discharge tube is fixed in the container.

According to a third aspect of the present invention, the container comprises: a cylindrical tube formed of an ultraviolet transmitting member; and a pair of flanges for sealing an open portion of the tube; and an inner tube of the discharge tube Are inserted into the pair of flanges.

With such a configuration, both ends of the inner tube of the discharge tube are inserted and supported by a pair of flanges constituting the container, and the discharge tube is fixed in the container.

According to a fourth aspect of the present invention, there is provided an outer tube having a ring-shaped space section and an inner tube which forms a hollow portion of the outer tube and is longer than the outer tube. A discharge tube filled with a rare gas; an excitation coil wound around the outer periphery of the outer tube of the discharge tube; and at least a part of the discharge tube and the excitation coil that is formed of an ultraviolet transmitting member, and A watertight container having a wall provided with a through-hole for fitting an opening at one end of the inner tube of the tube and a through-hole through which the other end of the inner tube extends to extend the inner tube to the outside; A pair of leads for supplying a high-frequency current to the excitation coil; and one or two water-tight introduction holes for introducing the pair of leads into the container.

With such a configuration, the through hole provided in the wall of the container fits one end of the inner tube of the discharge tube, and the through hole provided in the wall opposed to the wall is the inner tube. To support the inner tube by penetrating the extension at the other end of the
The discharge tube is fixed in the container. When a high-frequency current is supplied to the excitation coil in the container from the lead wire inserted into the container through the introduction hole, the discharge tube is turned on, and ultraviolet rays are emitted from mercury or the like sealed in the outer tube. At this time, even if the container is submerged in water, the water does not directly touch the wall of the outer tube of the discharge tube, and the heat of the discharge tube and the heat retaining effect of the container cause the temperature of the discharge tube to reach the water temperature. Maintain around 40 ° C. without further reduction. Thereby, ultraviolet rays are irradiated with good radiation efficiency without lowering the temperature of mercury in the discharge tube. At the same time, when air is sent into the inner tube by a compressor (not shown) from an opening of an extended portion of the inner tube of the discharge tube that has come out of the through hole of the container, air in the inner tube is discharged from the outer tube of the discharge tube. The irradiated ultraviolet rays generate ozone, and the ozone is injected into the water from the other through-hole of the container, and the ozone sterilizes running water.

According to a fifth aspect of the present invention, a liquid is prevented from entering into an opening of a through hole formed in a wall surface of the container into which an opening of one end of the inner tube of the discharge tube is fitted, and air is permeable. Is provided.

[0018] With this configuration, the ozone generated in the inner tube of the discharge tube and the air pass through the porous filter that closes the opening of the through hole formed in the wall surface of the container.
By being sprayed as innumerable air bubbles into water, ozone touches a wide range of water and sterilizes the water.

According to a sixth aspect of the present invention, the excitation coil wound around the outer periphery of the discharge tube is a plurality of independent coils, each of which is an independent coil, and the plurality of excitation coils are connected to the pair of lead wires. They are connected in parallel in the container.

With such a configuration, the inductance of the excitation coil as viewed from the pair of lead wires is reduced. Therefore, even if the high-frequency voltage constantly applied to the excitation coil is low, the discharge tube is turned on. A low-frequency voltage from a high-frequency power supply (not shown) is applied to the other side of the lead wire.

According to a seventh aspect of the present invention, there is provided an electrodeless discharge lamp unit according to any one of the first to third aspects, and a flowing water in which the electrodeless discharge lamp unit is disposed and in which water to be treated is flown. A tube; a watertight drawing hole for drawing a pair of lead wires from the electrodeless discharge lamp unit to the outside of the water pipe; and a high frequency power supply for supplying a high frequency current to the pair of lead wires drawn from the drawing hole. ;

With such a configuration, the high-frequency current output from the high-frequency power supply is supplied to the electrodeless discharge lamp unit inside the water pipe through a pair of lead wires drawn out of the outlet hole of the water pipe. This electrodeless discharge lamp unit is turned on in running water. Even if the electrodeless discharge lamp unit is submerged, it is turned on without decreasing the ultraviolet irradiation efficiency, and a sufficient amount of ultraviolet light is irradiated into running water to sterilize it.

According to an eighth aspect of the present invention, there is provided an electrodeless discharge lamp unit according to any one of the fourth to sixth aspects, and a water pipe in which the electrodeless discharge lamp unit is disposed and through which water to be treated flows. A pair of lead wires extending from the electrodeless discharge lamp unit and a water-tight drawing hole for drawing the lead wire to the outside of the water pipe; and an extension of an inner tube extending outside from the container of the electrodeless discharge lamp unit to the outside. A through hole having a watertight structure provided in the pipe wall of the water pipe for taking out to the outside of the water pipe; a high frequency power supply for supplying a high frequency current to a pair of lead wires drawn out of the draw hole; A compressor that feeds a gas containing oxygen from an opening at the end of the extension of the inner tube that extends to the outside through a through hole provided in a wall.

With this configuration, the high-frequency current output from the high-frequency power supply is supplied to the electrodeless discharge lamp unit inside the water pipe through a pair of lead wires drawn out of the outlet hole of the water pipe. This electrodeless discharge lamp unit is turned on in running water. Even if the electrodeless discharge lamp unit is submerged, it is turned on without decreasing the ultraviolet irradiation efficiency, and a sufficient amount of ultraviolet light is irradiated into running water to sterilize it. The compressor feeds, for example, air from an extension of an inner tube of the electrodeless discharge lamp unit that comes out of a water-tight through hole provided in a tube wall of the flowing water tube. As a result, the air sent into the inner tube of the electrodeless discharge lamp unit generates ozone, which is ejected into the flowing water tube to sterilize the flowing water or decompose organic substances in the flowing water.

According to a ninth aspect of the present invention, an optical semiconductor member is applied to an inner wall surface of the water pipe adjacent to the electrodeless discharge lamp unit.

With such a configuration, when the ultraviolet light emitted from the electrodeless discharge lamp unit passes through the running water and reaches the inner wall of the water pipe, the ultraviolet light hits the optical semiconductor member applied to the inner wall, and Active electrons are generated from the member, and the active electrons sterilize flowing water or decompose organic substances contained therein, and synergize with sterilization of water by the ultraviolet rays and sterilization of water by the ozone and decomposition of organic substances.

[0027]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a partially broken perspective view showing the configuration of the first embodiment of the electrodeless discharge lamp unit of the present invention. Reference numeral 11 denotes a discharge tube formed of, for example, quartz or the like, which forms a discharge space having a ring-shaped double tube structure, and includes an outer tube 11a and an inner tube 11b. 12
Is an excitation coil wound around the outer periphery of the outer tube 11a of the discharge tube 11, and each coil is independent. Reference numeral 13 denotes a cylindrical outer tube 13a formed of an ultraviolet transmitting member such as quartz, alumina, or ceramics, and the open end of the outer tube 13a is sealed to allow water to be treated to enter the outer tube 13a. This is an envelope (container) constituted by flanges 13b1 and 13b2 formed of circular plastic or metal or the like, which has a diameter sufficient to accommodate the discharge tube 11. Reference numeral 14 denotes an introduction hole for introducing the pair of lead wires 15 into the envelope 13, and has a watertight structure so that water to be treated such as water does not enter the interior of the envelope 13. Reference numeral 15 denotes a lead wire that supplies a high-frequency current to the excitation coil 12 and is covered with an insulator such as ceramics.
The lead wire 15 is connected to the excitation coil 12 inside the envelope 13. 16 is treated water (running water 100)
Is a running water pipe made of iron pipe, etc., through which an envelope 1 is placed.
3 has a diameter sufficient to accommodate it. Reference numeral 17 denotes a watertight drawing hole for drawing out the lead wire 15 to the outside of the flowing water pipe 16 and has a watertight structure such that the flowing water (water to be treated) 100 does not leak outside.

Next, the configuration and operation of this embodiment will be described. An electrodeless discharge lamp including a discharge tube 11 and an excitation coil 12 wound around the outer periphery of the discharge tube 11 is housed in an envelope 13. A rare gas and mercury are sealed in the outer tube 11a of the discharge tube 11. Excitation coil 12 wound around the outer periphery of discharge tube 11
Is a pair of introduction holes 1 provided in the flange 13b1.
4 are connected in parallel to a pair of lead wires 15 inserted. The pair of lead wires 15 is drawn out of the flowing water pipe 16 through a drawing hole provided in the flowing water pipe 16.

Here, the inner tube 11b constituting the discharge tube 11
Is longer than the outer tube 11a constituting the discharge tube 11, and both ends are inserted into the flanges 13b1 and 13b2 on both sides. Thus, the inner tube 11b is supported by the flanges 13b1 and 13b2, and the discharge tube 11 is fixed so as not to move in the envelope 13.

Since a high-frequency current is supplied from a high-frequency power supply (not shown) to the lead wire 15 drawn out of the water pipe 16, the high-frequency current is supplied to the excitation coil 12 wound around the outer periphery of the discharge tube 11. Supplied to As a result, a discharge is generated inside the discharge tube 11, and the mercury atoms sealed in the discharge tube 11 are excited by the discharge, and 25 μm effective for sterilization.
Irradiation with ultraviolet rays such as 4 nm and 185 nm is performed. The irradiated ultraviolet light passes through the wall surface of the outer tube 13 a of the envelope 13 and is irradiated inside the water pipe 16. The flowing water 100 flowing inside the flowing water pipe 16 is sterilized by the above-mentioned ultraviolet rays and flows downstream.

Since the discharge tube 11 is inside the envelope 13, the water to be treated does not directly touch the tube wall of the discharge tube 11. For this reason, once lit, the discharge tube 1
Due to the heat generated from 1 and the heat retention effect of the envelope 13,
The wall of the discharge tube 11 does not drop to the temperature of the water to be treated.
Hold nearby.

According to the present embodiment, both ends of the inner tube 11b of the discharge tube 11 constituting the double tube are connected to the outer casing 13 without providing a special member or the like as a support mechanism for the discharge tube 11.
The discharge tube 11 can be fixed in the envelope 13 with a simple configuration supported by the flanges 13b1 and 13b2. Therefore, the discharge tube 11 does not move in the envelope 13, and not only can the accident that the discharge tube 11 collides with the wall surface of the envelope 13 and the like and the discharge tube 11 is damaged be eliminated, but also, The support mechanism of the discharge tube 11 is
The ultraviolet light emitted from the substrate is not blocked, and the irradiation efficiency of the ultraviolet light can be kept good. The discharge tube 11
Since the support mechanism is simple, the production becomes easy and the production cost of the electrodeless discharge lamp unit can be reduced.

Since the electrodeless discharge lamp composed of the discharge tube 11 and the excitation coil 12 is housed in the envelope 13, the flowing water 100 to be treated is directly supplied to the discharge tube 11.
Of the discharge tube 11 during lighting can be maintained at around 40 ° C. by not touching the wall of the discharge tube 11 and the heat retaining effect of the envelope 13. For this reason, the efficiency of ultraviolet irradiation from the electrodeless discharge lamp is as designed, and
With respect to 0, the expected bactericidal effect can be obtained.

The distance between the outer wall of the outer tube 11a of the discharge tube 11 and the inner wall of the outer tube 13a of the envelope 13 is determined by the distance between the excitation coil 1
It is configured to be 1/10 of this diameter from the diameter of 2. Therefore, the dielectric constant of water flowing outside the envelope 13 does not affect the inductance of the excitation coil 12, and electromagnetic energy can be efficiently supplied from the excitation coil 12 to the inside of the discharge tube 11.

The inner tube 11b constituting the discharge tube 11 is supported by the flanges 13b1 and 13b2 on both sides by sandwiching both ends of the inner tube 11b between the flanges 13b1 and 13b2 on both sides and applying a pressing force. Has the same effect. That is, the inner tube 11b of the discharge tube 11
May be supported by any relationship with the flanges 13b1 and 13b2. In addition, the object of sterilization of the ultraviolet rays emitted from the discharge tube 11 of the present embodiment is not limited to running water, but may be a liquid containing water or a fluid chemical substance, and has the same effect.

FIG. 2 is a partially broken perspective view showing a second embodiment of the electrodeless discharge lamp unit of the present invention. Discharge tube 11 of electrodeless discharge lamp housed in envelope 13
On the outer peripheral portion of the discharge tube 11, excitation coils 12 a, 12 b, and 12 c are wound, and a pair of wires 19 are arranged along the longitudinal direction of the discharge tube 11. A pair of wires 1
Numeral 9 is arranged very close to the outer peripheral portion of the discharge tube 11, and the excitation coils 12 a, 12 b, and 12 c are electrically connected to the pair of wires 19 in parallel. Furthermore,
One end of the pair of wires 19 is connected to the flange 13 of the envelope 13.
It is connected to a pair of lead wires 15 inserted into the envelope 13 from the introduction hole 14 provided in b1. Discharge tube 1
Reference numeral 1 denotes a double-pipe configuration including an outer pipe 11a and an inner pipe 11b. A tip a of an inner pipe 11b longer than the outer pipe 11a is inserted into a through-hole 20 formed in the center of a flange 13b1, and the other end is provided. Penetrates through the through hole 20 formed in the center of the opposite flange 13b2, and protrudes outside the envelope 13. The extension C of the inner pipe that has protruded outside the envelope 13 is bent at a substantially right angle on the way, and is drawn out of the flowing water pipe 16 through a water-tight through hole 23 formed in the wall of the flowing water pipe 16. . Further, a porous filter (porous member) 22 is attached to the opening of the through hole 20 formed in the flange 13b1.

Since the discharge tube 11 has the distal end b of the inner tube 11b inserted into the through hole 20 of the flange 13b1 and the opposite end b through the through hole of the flange 13b2, the discharge tube 11 discharges. The pipe 11 is supported and fixed by flanges 13b1 and 13b2. Other configurations are the same as those of the first embodiment shown in FIG.

Next, the operation of this embodiment will be described. A high-frequency current is supplied from a high-frequency power supply (not shown) to the lead wire 15 drawn out of the discharge hole 11 of the water pipe 16.
Of the excitation coils 12a, 12b,
12c. Thereby, the outer tube 1 of the discharge tube 11
Discharge occurs inside 1a, and 254 nm, 1
Ultraviolet rays such as 85 nm are applied. The irradiated ultraviolet light passes through the envelope 13 and is applied to the flowing water 100 flowing inside the flowing water pipe 16 to sterilize the flowing water 100. At the same time, a compressor (not shown) is connected to the extension C of the inner pipe 11b drawn out of the through hole 23 outside the water pipe 16, and air is sent from the compressor from the extension C of the inner pipe 11b. As a result, the air in the inner tube 11b is exposed to ultraviolet rays emitted from the discharge space in the outer tube 11a to generate ozone.
The porous filter 22 turns into countless air bubbles, which are jetted into the flowing water to sterilize the flowing water 100 that has come into contact with the ozone. Here, the outer tube 11a is made of ordinary quartz, that is, 253 nm of mercury radiation.
The inner tube 11b is made of so-called synthetic quartz having a high ultraviolet ray transmittance of 185 nm in order to increase ozone generation efficiency. Filter 2
2 is made of porous ceramics, etc.
It has air permeability to prevent the water to be treated from entering the inside and to blow out the air in the inner tube into flowing water.

According to the present embodiment, both ends of the inner tube 11b of the discharge tube 11 forming the double tube are connected to the envelope 13 without providing a special member or the like as a support mechanism for the discharge tube 11.
With the simple configuration supported by the flanges 13b1 and 13b2, the discharge tube 11 can be fixed in the envelope 13, and the tip of one of the inner tubes 11b is connected to the flange 13b.
b2 is drawn out to the outside of the envelope 13 and the extension c of the inner tube 11b is used as a passage for sending air to the inner tube 11b, so that air for generating ozone is sent to the inner tube 11b. It is significantly simpler and makes the production of electrodeless discharge lamps easier and cheaper.

Further, since the extension C for sending air to the inner tube 11b is drawn outward from the axial center of the discharge tube 11, it blocks ultraviolet rays emitted from the discharge space in the outer tube 11a of the discharge tube 11. Without dispersing UV light efficiently
Irradiation during zero.

Further, the ultraviolet rays applied to the inner tube 11b side of the discharge tube 11 ozonize the air sent into the inner tube 11b, and this ozone is injected into water and used for sterilizing the running water 100. In addition, the ultraviolet rays irradiated by the discharge tube 11 can be effectively used, and the running water 100 can be sterilized not only with the ultraviolet rays but also with the ozone, so that efficient sterilization can be performed.

Further, since the excitation coil wound around the discharge tube 11 is divided into a plurality of parts and connected in parallel to the lead wire 15, the inductance of the excitation coil viewed from the lead wire 15 side is reduced, and 100 can be reduced, and it is not necessary to constantly apply a high voltage to the excitation coil.
The circuit design of a high-frequency power supply (not shown) that supplies a high-frequency current to 2a, 12b, and 12c can be facilitated.

Further, since the current path is divided into a plurality of excitation coils from the lead wire 15 introduced into the inside of the envelope 13, the number of the introduction holes 14 provided in the flange 13b1 of the envelope 13 is at most two. Enclosure 1
3 not only reduces the manufacturing cost, but also reduces the risk of water leakage
Can be improved in reliability. In addition, there are effects similar to those of the first embodiment shown in FIG. In addition, the tip of the inner pipe 11b has a through hole 20 formed in the flange 13b1.
The same effect can be obtained by adopting a configuration in which the above-mentioned porous lid is attached to the opening of the protruding inner tube 11b.

FIG. 3 is a partially broken perspective view showing a third embodiment of the electrodeless discharge lamp unit of the present invention. In this example, an optical semiconductor member 24 such as titanium oxide is applied to the inner wall of the water pipe 16 near the electrodeless discharge lamp housed in the envelope 13. When the optical semiconductor member 24 arranged near the electrodeless discharge lamp receives the ultraviolet rays emitted from the electrodeless discharge lamp, it generates active electrons. The active electrons generated from the optical semiconductor member 24 are flowing water 10
0 is sterilized or organic matter in the running water 100 is decomposed. Other configurations are the same as those of the first embodiment shown in FIG.

According to this embodiment, active electrons are generated by irradiating the optical semiconductor member 24 with ultraviolet light that has been passed through the flowing water 100 and is wasted as it is, thereby sterilizing the flowing water 100 and decomposing organic substances by the ultraviolet light and ozone. Synergistically with the effect, the active electrons generated from the optical semiconductor member 24 sterilize the flowing water 100 and decompose organic substances in the flowing water 100, so that more efficient water treatment can be performed. Other effects are the same as the effects of the second embodiment shown in FIG. Incidentally, the electrodeless discharge lamp unit of this embodiment may use the one shown in FIG. 1, and in this case, the running water 100 is sterilized by ultraviolet rays and active electrons.

FIG. 4 is a view showing a fourth embodiment of the electrodeless discharge lamp unit of the present invention. Also in this example, the inner tube 11b which is longer than the outer tube 11a of the discharge tube 11 forming the double tube.
At the tip of the flange 13b1,1
The discharge tube 11 is fixed in the envelope 13 by supporting the inner tube 11b by applying a slight pressing force by 3b2. The ends of the three excitation coils 12a, 12b, and 12c wound around the outer tube 11a are wound around portions of the inner tube 11b protruding from the outer tube 11a, and these ends are brought close to the inner tube 11b. Then, the wire 19 is electrically connected in parallel. Note that the excitation coils 12a, 12
Each of b and 12c is uniformly wound around the entire outer peripheral portion of the outer tube 11a.

According to this embodiment, the three excitation coils 12a, 12b are provided on the portion of the inner tube 11b projecting from the outer tube 11a.
Since the ends of 12b and 12c are wound and fixed, and electrically connected in parallel to the wire 19 at this portion, the parallel connection wiring to the excitation coils 12a, 12b and 12c is formed by a simple configuration of the discharge tube 11. It can be fixedly arranged at the center of the axis and outside the outer tube 11a, and the excitation coils 12a, 12b,
The parallel connection wiring to 12c can be made extremely stable mechanically, and since the parallel connection wiring does not protrude into the envelope 13, the space inside the enclosure 13 can be improved. In addition to holding the ultraviolet rays, the parallel connection wiring does not block the ultraviolet rays emitted from the discharge tube 11, so that the ultraviolet rays can be efficiently emitted into the flowing water 100.

FIG. 5 is a block diagram showing the configuration of the first embodiment of the liquid processing apparatus of the present invention. For example, an electrodeless discharge lamp unit 50 having the same configuration as that shown in FIG. The lead 15 wire connected to the electrodeless discharge lamp unit 50 is
The high-frequency power is supplied from the high-frequency power supply 40 to the electrodeless discharge lamp unit 50 from the high-frequency power supply 40. The water pipe 16 is connected to the water pipe 42 by the connection part 41, and water flows into the water pipe 16 from the water pipe 42 on the left side in the figure. The water flowing into the water pipe 16 is irradiated with ultraviolet rays generated from the electrodeless discharge lamp unit 50 to be sterilized, and the sterilized water flows out of the water pipe 16 to the water pipe 42 on the right side in the figure.

According to the present embodiment, the electrodeless discharge lamp unit 50 maintains the temperature of the wall of the discharge tube at about 40 ° C. because the discharge tube is housed in the envelope and does not directly contact the flowing water. As a result, the ultraviolet irradiation efficiency is not reduced, so that the ultraviolet light as designed can be irradiated into the flowing water in the water pipe 16. Further, since the discharge tube is fixed in the envelope, the discharge tube does not move in the envelope and is not damaged. Can stably exhibit the bactericidal effect. still,
The same effect can be obtained by using the electrodeless discharge lamp unit 50 shown in FIG.

FIG. 6 is a block diagram showing the configuration of a second embodiment of the liquid processing apparatus of the present invention. For example, an electrodeless discharge lamp unit 50 having the same configuration as that shown in FIG. The lead 15 wire connected to the electrodeless discharge lamp unit 50 is
The high-frequency power is supplied from the high-frequency power supply 40 to the electrodeless discharge lamp unit 50 from the high-frequency power supply 40.

The extension of the inner tube which is drawn out of the electrodeless discharge lamp unit 50 to the outside of the water pipe 16 is connected to a compressor 60, from which air is discharged from the discharge tube of the electrodeless discharge lamp unit 50. Is sent to the inner tube. The air sent into the inner tube is exposed to ultraviolet rays to generate ozone. On the other hand, the running water pipe 16 is connected to the running water pipe 42 by the connecting portion 41, and water flows into the running water pipe 16 from the left running water pipe 42 in the drawing. The water flowing into the flowing water pipe 16 is sterilized by irradiation of ultraviolet rays generated from the electrodeless water lamp unit 50, and is sterilized by ozone generated from the electrodeless discharging lamp unit 50. 16 to right side water pipe 4 in the figure
Run out to 2.

According to the present embodiment, the flowing water is sterilized by both the ultraviolet rays emitted from the electrodeless discharge lamp unit 50 and the ozone injected from the unit 50, so that the flowing water is sterilized very efficiently. be able to. Other effects are similar to those of the first embodiment shown in FIG.
In addition, if the thing shown in FIG. 3 is used as the electrodeless discharge lamp unit 50, since sterilization with respect to running water is also performed with active electrons in addition to ultraviolet rays and ozone, the sterilizing efficiency of running water can be further improved. .

[0053]

As described above, according to the first aspect of the present invention, when the discharge tube is housed in a sealed container, both ends of the inner tube of the discharge tube are supported by the inner wall surface of the container. Thus, the discharge tube can be supported by the container with a simple structure, and thereby, the discharge tube can be fixed, and damage to the discharge tube due to movement of the discharge tube inside the container can be prevented. In addition, since the discharge tube is housed in a sealed container, the surface temperature of the discharge tube does not decrease even if it is submerged in running water, so that the irradiation efficiency of the ultraviolet rays to be irradiated is maintained well. Can be.

According to the second aspect of the present invention, the discharge tube can be fixed by supporting both ends of the inner tube of the discharge tube by the inner surfaces of the pair of flanges.

According to the third aspect of the present invention, the discharge tube can be securely fixed by inserting and supporting both ends of the inner tube of the discharge tube in the pair of flanges.

According to the fourth aspect of the invention, when the discharge tube is housed in a sealed container, one end of the inner tube of the discharge tube is fitted into a through hole formed in the inner wall surface of the container. Then, the discharge tube can be supported by the container with a simple structure by penetrating the extension of the inner tube through a through hole formed on the opposite side of the inner wall surface and supporting the discharge tube in the container. Thus, it is possible to fix the discharge tube and prevent the discharge tube from being damaged due to the movement of the discharge tube inside the container. In addition, since the discharge tube is housed in a sealed container, the surface temperature of the discharge tube does not decrease even when immersed in running water, so that the irradiation efficiency of ultraviolet light can be kept good. .
Further, by sending air into the inner tube from the extension of the inner tube that has penetrated the container and came out of the container, and by applying ultraviolet light applied to the air toward the inner tube to generate ozone, In addition to ultraviolet light, sterilization by ozone can be performed, and the sterilization efficiency against running water can be significantly improved.

According to the fifth aspect of the present invention, the ozone-containing air in the inner tube is jetted into the flowing water as innumerable bubbles by the filter of the porous member. It can be carried out.

According to the sixth aspect of the present invention, since the inductance of the excitation coil is reduced, it is not necessary to constantly increase the output voltage of the high-frequency power supply for supplying a high-frequency current to the excitation coil, thereby facilitating the design of the high-frequency power supply. be able to.

According to the seventh aspect of the present invention, since the electrodeless discharge lamp unit which does not reduce the ultraviolet irradiation efficiency even when submerged in running water is used, it is possible to perform the expected sterilization treatment on the water to be treated. .

According to the eighth aspect of the invention, since the electrodeless discharge lamp unit which does not decrease the ultraviolet irradiation efficiency even when immersed in running water is used, not only does the irradiation efficiency of the ultraviolet rays to the water to be treated not decrease. In addition, since ozone is injected into running water in addition to ultraviolet rays to perform sterilization, extremely efficient sterilization in running water can be performed.

According to the ninth aspect of the present invention, active electrons are generated from the optical semiconductor member in response to the ultraviolet rays irradiated from the discharge tube. Therefore, in addition to the ultraviolet rays and the ozone, the active electrons are also sterilized by flowing water or the like. By contributing to the decomposition, the water treatment efficiency can be further improved.

[Brief description of the drawings]

FIG. 1 is a partially broken perspective view showing the configuration of a first embodiment of an electrodeless discharge lamp unit of the present invention.

FIG. 2 is a partially broken perspective view showing the configuration of a second embodiment of the electrodeless discharge lamp unit of the present invention.

FIG. 3 is a partially broken perspective view showing the configuration of a third embodiment of the electrodeless discharge lamp unit of the present invention.

FIG. 4 is a diagram showing a configuration of a fourth embodiment of the electrodeless discharge lamp unit of the present invention.

FIG. 5 is a schematic view showing a configuration of a first embodiment of the liquid processing apparatus of the present invention.

FIG. 6 is a schematic diagram illustrating a configuration of a liquid processing apparatus according to a second embodiment of the present invention.

FIG. 7 is a schematic diagram showing an example of a conventional electrodeless discharge lamp lighting device.

FIG. 8 is a characteristic diagram showing the relationship between the coldest part of the discharge tube and the intensity of ultraviolet light emitted from the discharge tube.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 11 Discharge tube 11a, 13a Outer tube 11b Inner tube 12, 12a-12c Excitation coil 13 Envelope 13b1, 13b2 Flange 14 Introducing hole 15 Lead wire 16 Flowing water pipe 17 Lead-out hole 19 Wire 20, 23 Through-hole 22 Filter 24 Optical semiconductor Member 40 High frequency power supply 41 Connection part 42 Water pipe 43 Compressor 50 Electrodeless discharge lamp unit

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Hiroshi Onishi, Inventor Hiroshi Nakagawa 4-3-1 Higashishinagawa, Shinagawa-ku, Tokyo Inside (72) Inventor Yoshio Nakayama 1-1-1, Shibaura, Minato-ku, Tokyo Stock (72) Inventor Magameo Ishimitsu 1-1-1, Shibaura, Minato-ku, Tokyo Inside the Toshiba head office

Claims (9)

[Claims] 1. An outer tube having a ring-shaped space section and an inner tube forming a hollow portion of the outer tube and being longer than the outer tube, and mercury or a rare gas is sealed in the outer tube. A discharge tube; an excitation coil wound around the outer periphery of an outer tube of the discharge tube; and at least a part of the discharge tube and the excitation coil that are formed of an ultraviolet transmitting member, and an inner tube of the discharge tube. A pair of leads for supplying a high-frequency current to the excitation coil; and one or two of a pair of watertight structures for introducing the pair of leads into the container. An electrodeless discharge lamp unit comprising: 2. The discharge vessel comprises: a cylindrical tube formed of an ultraviolet transmitting member; and a pair of flanges for sealing an open portion of the tube; 2. The electrodeless discharge lamp unit according to claim 1, wherein both ends of the tube are supported. 3. The container comprises: a cylindrical tube formed of an ultraviolet ray transmitting member; and a pair of flanges for sealing an open portion of the tube; The electrodeless discharge lamp unit according to claim 1, wherein the electrodeless discharge lamp unit is inserted into the pair of flanges. 4. An outer tube having a space portion having a ring-shaped cross section and an inner tube forming a hollow portion of the outer tube and being longer than the outer tube, and mercury or a rare gas is sealed in the outer tube. A discharge tube; an excitation coil wound around an outer peripheral portion of an outer tube of the discharge tube; and at least a part containing the discharge tube and the excitation coil formed of an ultraviolet transmitting member, and an inner tube of the discharge tube. A water-tight container provided on the wall surface with a through-hole for fitting the opening at one end and a through-hole through which the other end of the inner tube passes through to extend the extension of the inner tube to the outside; An electrodeless discharge lamp unit comprising: a pair of lead wires for supplying a pair of lead wires; and one or two water-tight introduction holes for introducing the pair of lead wires into the container. 5. A porous member that prevents penetration of liquid and has air permeability into an opening of a through hole formed in a wall surface of the container into which an opening at one end of the inner tube of the discharge tube is fitted. The electrodeless discharge lamp unit according to claim 5, wherein a filter is provided. 6. The excitation coil wound around the outer circumference of the discharge tube is a plurality of independent coils, each of which is an independent coil, and the plurality of excitation coils are arranged in parallel with the pair of lead wires. The electrodeless discharge lamp unit according to any one of claims 1 to 5, wherein the electrodeless discharge lamp unit is connected inside the discharge lamp. 7. An electrodeless discharge lamp unit according to claim 1, wherein the electrodeless discharge lamp unit is disposed inside, and a flowing water pipe through which to-be-treated water flows is provided inside the electrodeless discharge lamp unit; A water-tight drawing hole for drawing a pair of lead wires coming out of the electrode discharge lamp unit to the outside of the water pipe; and a high-frequency power supply for supplying a high-frequency current to the pair of lead wires drawn from the drawing hole. A liquid processing apparatus characterized by the above-mentioned. 8. The electrodeless discharge lamp unit according to claim 4, wherein the electrodeless discharge lamp unit is disposed inside, and a flowing water pipe through which to-be-treated water flows is provided therein; A draw-out hole having a watertight structure for drawing out a pair of lead wires coming out of the discharge lamp unit to the outside of the water pipe; and an extension of an inner pipe coming out of the container of the electrodeless discharge lamp unit to the outside of the water pipe. A through hole having a watertight structure provided on a pipe wall of the water pipe for taking out; a high frequency power supply for supplying a high frequency current to a pair of lead wires drawn out of the draw hole; and a high frequency power supply provided on a pipe wall of the water pipe. A compressor that feeds a gas containing oxygen from an opening at the end of an extension of the inner tube that extends out of the through-hole. 9. The liquid processing apparatus according to claim 7, wherein an optical semiconductor member is applied to an inner wall surface of the water pipe adjacent to the electrodeless discharge lamp unit.