JP3677357B2 - UV sterilizer for running water - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a sterilization apparatus, and more particularly to an ultraviolet sterilization apparatus for running water that is disposed in a circulation path of running water and sterilizes running water with ultraviolet light.
[0002]
[Prior art]
Conventionally, sterilization of running water in the middle of a circulation path has been widely performed. As a sterilization device for this purpose, an ultraviolet sterilization device using an ultraviolet lamp is widely used as a sterilization device that is compact, has high sterilization ability, and is easy to manage. Has been.
[0003]
The ultraviolet sterilizer is configured such that an ultraviolet lamp is covered with an outer tube and disposed in a jacket, and ultraviolet rays are sterilized when flowing water flows from the water inlet to the water outlet in the jacket.
[0004]
An example of this ultraviolet sterilizer is as shown in FIG. 5, and the jacket 1 is provided with a water inlet 2 and a water outlet 3, and the upper end opening is closed with a jacket lid 4 and is made of metal or plastic.
[0005]
Reference numeral 6 denotes an outer tube made of glass such as quartz, which has good ultraviolet transparency, and this outer tube 6 is sealed in a mounting hole 5 provided in the center of the jacket lid 4 with a general packing 7 such as an O-ring. It is fitted and fitted so that there is no water leakage.
[0006]
Reference numeral 8 denotes an ultraviolet lamp inserted into the outer tube 6. In the jacket 1, the ultraviolet lamp 8 is covered with the outer tube 6 so that it does not come into direct contact with water so that it does not break due to a temperature difference. Deployed as a state.
[0007]
FIG. 6 shows another example of a conventional UV sterilizer. In this example, an outer tube 6 covering the outside of the UV lamp 8 is fitted into the mounting hole 5 while being bonded to the jacket lid 4 with an adhesive 9. Attached.
[0008]
[Problems to be solved by the invention]
However, if the outer tube 6 that protects the ultraviolet lamp 8 is fitted to the mounting hole 5 while using the packing 7 or the adhesive 9 as in the conventional ultraviolet sterilizer, the manufacturing cost is very high. Or the durability of the seal is inferior.
[0009]
First, as shown in FIG. 5, when the outer tube 6 is fitted to the jacket lid 4 by fitting into the mounting hole 5 while sealing using a packing 7 such as an O-ring, it is very difficult to manufacture the outer tube 6. High dimensional accuracy is required and the yield is very low, which increases the cost.
[0010]
When sealing using an O-ring, the outer tube 6 having a diameter of about 20 mm is required to have an accuracy of an outer diameter of plus 0 mm or minus 0.06 mm.
[0011]
However, in the case of a generally manufactured quartz tube having a diameter of about 20 mm, the outer diameter dimension has an accuracy of about plus or minus 0.5 mm.
[0012]
Therefore, in order to obtain the outer tube 6 satisfying the seal using the O-ring, a quartz tube satisfying the dimensional accuracy of the outer diameter is manufactured by custom order, or the manufactured quartz tube is generally used using a hot lathe. Either post-processing or selecting only those that meet dimensional accuracy must be used.
[0013]
If a quartz tube is manufactured as a special order, it naturally becomes very expensive, and post-processing is also very difficult and the cost is also very high. Only those having a suitable diameter are selected and used as the outer tube 6.
[0014]
However, if the outer tube 6 is selected from the generally manufactured quartz tubes that satisfy the dimensional accuracy of the outer diameter, the yield will be very low, and the cost will inevitably increase.
[0015]
Next, as shown in FIG. 6, when the outer tube 6 is fitted to the jacket lid 4 by fitting into the mounting hole 5 while being sealed using the adhesive 9, the outer diameter of the outer tube 6 is highly accurate. Therefore, a generally manufactured quartz tube can be used as the outer tube 6 as it is.
[0016]
However, when the outer tube 6 is fitted into the jacket lid 4 by fitting it in the mounting hole 5 while sealing using the adhesive 9, it takes time to apply the adhesive 9, and at the same time the adhesive 9 is cured. It takes time, and the number of defective adhesions increases, resulting in a high manufacturing cost.
[0017]
In addition, since the seal with the adhesive 9 deteriorates when exposed to ultraviolet rays for a long time, there is a problem that the effect of the seal is lost during use and the maintenance of the apparatus becomes difficult.
[0018]
In order to eliminate the disadvantages of this adhesive, it may be considered to use a packing such as an O-ring or to shield the adhesive against ultraviolet rays. However, if such a method is adopted, the cost will be further increased.
[0019]
The present invention eliminates the drawbacks of the prior art as described above, uses a generally manufactured quartz tube as the outer tube 6 as it is, and provides the outer tube 6 with a completely sealing effect over a long period of time. An object of the present invention is to provide an ultraviolet sterilizer for running water that is easily fitted to the jacket lid 4 by fitting it into the mounting hole 5 at a low manufacturing cost and is easy to maintain.
[0020]
[Means for Solving the Problems]
That is, according to the present invention, an ultraviolet lamp is provided by protecting the jacket with an outer tube, and a water inlet for taking in water and a water outlet for discharging water are provided in the jacket, and water flowing in the jacket is sterilized with ultraviolet rays. An ultraviolet sterilizer for running water, which is provided with a jacket lid for sealing the upper end opening of the jacket with a sealing material, and provided with a mounting hole for inserting the outer tube in the jacket lid, so that the outer tube is closely attached. A horizontal flange portion that is in close contact with the base tube portion 18 and the jacket lid is provided, and an elastic seal tube made of a material that has elasticity and is not easily deteriorated by ultraviolet rays is fitted to the mounting hole at the front end opening of the outer tube. And attaching the outer flange to the jacket by bringing the horizontal flange portion of the elastic seal tube with flange into close contact with the peripheral portion of the mounting hole of the jacket lid. That attached to the circuiting lid solves the problems as flowing water disinfection apparatus characterized.
[0021]
In addition, an ultraviolet lamp is provided on the jacket with an outer tube, and a water inlet for taking in water and a water outlet for discharging water are provided in the jacket, and ultraviolet water sterilization of running water that sterilizes the water flowing in the jacket with ultraviolet rays. A device is provided with a jacket lid that seals the upper end opening of the jacket with a sealing material, a mounting hole through which the outer tube is inserted is provided in the jacket lid, and a vertical that hangs down below the jacket lid provided with the mounting hole The flange portion is provided with an outer tube fitting portion 29 to be fitted so that the outer tube is in close contact with the flange fitting portion 30 to be fitted to be in close contact with the vertical flange portion, and has elasticity and deteriorates due to ultraviolet rays. A straight tube type elastic seal tube made of a difficult material is attached to the jacket lid with the opening of the outer tube aligned with the mounting hole, and the straight tube type elastic seal tube The flange fitting portion of the tube has solved the problems as flowing water sterilizer, characterized in that the outer tube is brought into close contact with the flange portion of the vertical of the jacket lid attached to the jacket cover.
Furthermore, the cap is provided at the front end of the outer tube to prevent damage caused by contact with the jacket at the time of attachment / detachment.
[0022]
DETAILED DESCRIPTION OF THE INVENTION
Next, embodiments of the present invention will be described with reference to the drawings.
[0023]
The embodiment of the present invention will be described based on the first embodiment shown in FIGS. 1 to 3, but the same components as those in the conventional example are denoted by the same reference numerals.
[0024]
First, the overall configuration of the apparatus will be described with reference to the overall longitudinal sectional view of FIG. 1. The jacket lid 4 is fixed to the jacket 1 with a screw 11 via an O-ring packing 10 at the upper end opening. It is attached to completely prevent water leakage, and a rubber cap 12 is fitted to the tip of the outer tube 6 to prevent damage when removed for cleaning or the like.
[0025]
The ultraviolet lamp 8 is a straight tube type and is provided with electrodes 13 at both ends, held by a lamp base 14, and at the same time, a solderable nickel-plated wire 15 is drawn out from one electrode 13, and the other electrode 13 The lamp base 14 is connected by a bare wire 16, and the electrode 13 and the bare wire 16 on the lamp base 14 side are spot welded to a lead wire at a recessed portion in the lamp base 14, and are molded with steatite together with the lamp end face.
[0026]
Reference numeral 17 denotes a flanged elastic seal tube in which a straight tube base tube portion is fitted to the upper end portion of the outer tube 6, and the outer tube 6 is connected to the jacket lid via the flanged elastic seal tube 17 as described in detail later. Reference numeral 25 denotes a water leak detection sensor for preventing an accident when the outer pipe 6 is broken and water leaks.
[0027]
Next, a detailed configuration of attaching the outer tube 6 to the jacket lid 4 while sealing it to the mounting hole 5 through the elastic seal tube 17 with a horizontal flange is shown in a partial exploded perspective view of FIG. 2 and a front view of FIG. This will be explained based on.
[0028]
The flanged elastic seal tube 17 fitted to the upper end portion of the outer tube 6 is made of a material such as fluororubber which has elasticity and is not easily deteriorated by ultraviolet rays, and is a straight tube base tube portion 18 and the base tube portion 18. And a horizontal flange portion 19 extending in the horizontal direction from the upper end.
[0029]
Reference numeral 20 denotes a hose band. The hose band 20 is made of a material having a spring property, and the base pipe portion 18 of the flanged elastic seal pipe 17 fitted to the outer pipe 6 is firmly tightened from the outside to provide a sealing effect. Try to increase.
[0030]
21 is a holding plate, and when the outer tube 6 is attached to the jacket lid 4 through the flanged elastic seal tube 17 in accordance with the attachment hole 5, the horizontal flange portion 19 is attached in close contact with the peripheral portion of the attachment hole 5. It is a board for pressing as it is.
[0031]
A plurality of screw holes 22 are provided at predetermined intervals to attach the outer tube 6 to the periphery of the attachment hole 5 of the jacket lid 4. A plurality of screw insertion holes corresponding to the screw holes 22 are provided on the mounting plate 21. 23 is provided, and 24 is a mounting screw to be screwed into the screw hole 22.
[0032]
Therefore, in order to attach the outer tube 6 to the jacket lid 4, first, the base tube portion 18 of the elastic seal tube 17 with the flange is fitted to the distal end portion of the outer tube 6 and firmly tightened with the hose band 20.
[0033]
Next, the opening of the outer tube 6 fitted with the base tube portion 18 of the flanged elastic seal tube 17 is aligned with the mounting hole 5 of the jacket lid 4, and the horizontal flange portion 19 is fixed with the fitted holding plate 21. The screw insertion hole 23 and the screw hole 22 are pressed while being aligned, and finally the screw 24 is screwed into the screw hole 22 and stopped.
[0034]
As a result, the outer tube 6 is attached to the jacket lid 4 in a state of being completely sealed via the flanged elastic seal tube 17 fitted to the front end opening in the attachment hole 5 and fitted.
[0035]
That is, as the outer tube 6, a generally manufactured quartz tube is used as it is, and even if the tolerance of the outer diameter is plus or minus about 0.5 mm, the base tube portion 18 of the flanged elastic seal tube 17 is closely fitted. Further, if the hose band 20 having a spring property is tightened, the hose band 20 can be fitted more closely.
[0036]
Further, the outer tube 6 in which the base tube portion 18 of the flanged elastic seal tube 17 is closely fitted and fitted in this manner is pressed against the jacket lid 4 by the horizontal flange portion 19 of the flanged elastic seal tube 17 with the pressing plate 21. The mounting holes 5 are attached in close contact with each other over a wide area.
[0037]
As a result, the outer tube 6 is attached to the jacket lid 4 in a state where there is no fear of water leakage due to a complete sealing effect in a wide area of the base tube portion 18 and the horizontal flange portion 19 of the flanged elastic seal tube 17.
[0038]
Next, a second embodiment will be described with reference to FIG.
[0039]
In this second embodiment, reference numeral 26 denotes a jacket cover with a lower flange, and the lower flange cover jacket 26 has a vertical flange portion 27 extending downwardly around the mounting hole 5 and 28 is a straight tube type elastic member. It is a seal pipe, and is formed as a straight pipe comprising a lower outer pipe fitting portion 29 and an upper flange fitting portion 30 each having a diameter suitable for fitting.
[0040]
In order to attach the outer tube 6 to the jacket lid 26 with the lower flange, the outer tube fitting portion 29 of the straight tube type elastic seal tube 28 is fitted to the upper end portion of the outer tube 6, and the flange fitting portion 30 is fitted with the flanged jacket lid 26. Are fitted to the vertical flange portions 27, and the respective fitting portions are fastened by the hose band 20.
[0041]
Also in the second embodiment, as the outer tube 6, a general quartz tube having an outer diameter tolerance of plus or minus about 0.5 mm can be used, and the vertical flange portion 27 provided on the flanged jacket lid 26 also has an outer diameter size. It goes without saying that the tolerances of these are loose and do not require precise machining.
[0042]
【The invention's effect】
The present invention is configured as described above. First, a quartz tube that is generally manufactured as an outer tube for protecting an ultraviolet lamp can be used as it is, so that the cost of the outer tube is reduced, and the outer tube is attached to a jacket lid. Since it is simple and does not take time and does not cause defects, the assembling cost is reduced and the apparatus can be made at a low cost.
[0043]
Moreover, the sealing effect against water leakage due to the elastic seal tube is perfect, and if the elastic seal tube is made of a material resistant to ultraviolet rays such as fluoro rubber, it is hard to deteriorate, and even if some elasticity is lost due to deterioration, it is tightened with a hose band Since the sealing effect is maintained for a long period of time, maintenance of the apparatus is not expensive.
[Brief description of the drawings]
FIG. 1 is a longitudinal sectional view of a first embodiment;
FIG. 2 is a partial exploded perspective view of the first embodiment;
FIG. 3 is a front view of the first embodiment;
FIG. 4 is a longitudinal sectional view of a second embodiment;
FIG. 5 is a longitudinal sectional view of a first conventional example,
FIG. 6 is a vertical sectional view of a second conventional example.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Jacket 4 Jacket lid 5 Mounting hole 6 Outer tube 8 Ultraviolet lamp 17 Elastic seal tube 18 with flange Base tube portion 19 Horizontal flange portion 20 Hose band 21 Presser plate 24 Set screw 26 Jacket lid with lower flange 27 Lower flange portion 28 Straight tube Type elastic seal tube 29 outer tube fitting part 30 flange fitting part

Claims (3)

An ultraviolet ray sterilizer that protects the jacket with an outer tube and provides an ultraviolet lamp while providing water to the jacket and a water outlet for discharging water, and sterilizes the water flowing in the jacket with ultraviolet rays. A jacket lid for sealing the upper end opening of the jacket with a sealing material, a mounting hole for inserting the outer tube into the jacket lid, and a base tube portion 18 that fits in close contact with the outer tube; An elastic seal tube made of a material that has elasticity and is hard to be deteriorated by ultraviolet rays by providing a horizontal flange portion that is in close contact with the jacket lid is attached to the jacket lid with the opening of the outer tube aligned with the mounting hole, and the flange The outer flange is attached to the jacket lid with the horizontal flange portion of the elastic seal tube attached to the periphery of the jacket lid mounting hole. Running water of the sterilization apparatus according to claim. An ultraviolet ray sterilizer that protects the jacket with an outer tube and provides an ultraviolet lamp while providing water into the jacket and a water outlet for discharging water, and sterilizes the water flowing in the jacket with ultraviolet rays. A vertical flange that hangs down below the jacket lid provided with a mounting hole for inserting the outer tube in the jacket lid, the jacket lid sealing the upper end opening of the jacket with a sealing material. The outer tube fitting portion 29 that fits so that the outer tube is in close contact with the flange fitting portion 30 that fits in close contact with the vertical flange portion, has elasticity, and is hardly deteriorated by ultraviolet rays The straight tube type elastic seal tube is attached to the jacket lid with the front end opening of the outer tube aligned with the mounting hole, and the straight tube type elastic seal tube is attached to the jacket cover. Flowing water sterilizer, characterized in that the the Nji fitting portion the outer tube is brought into close contact with the flange portion of the vertical of the jacket lid attached to the jacket cover. The sterilizer for running water according to claim 1 or 2, wherein a cap for preventing the outer tube from being damaged by contact with a jacket at the time of attachment / detachment is provided.

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