JP2007167608A - Photocatalytic sterilizer equipped with sterilizing means and harmful substance removing means - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To solve such problems that the conventional photocatalytic sterilizer has excellent effects for removing harmful substance but has faults that reaction rate is low and the harmful substance is removed only in a part brought into contact with the surface of the photocatalyst, and ultraviolet ray has high sterilizing effects but allows high growth rate of many bacteria, and of a device with a structure giving sufficient effects easily and a device having sufficient practical performance, which increase production cost for special-purpose complex structure as well as costs for installation and maintenance, resulting in an expensive device. <P>SOLUTION: In the present invention, effects for removing harmful substance and sterilization are improved using two piled silica glass tubes with different diameters for outside and inside, only by installing a bactericidal ultraviolet ray lamp in the center of the inner silica glass tube, with a simple method in which a sterilization tank and a photocatalyst tank are structurally united. It has high circulation efficiency, thereby the circulation can be facilitated, additionally, their performance are enhanced. Although a tank container for processing objects is included, the whole of the device is considerably simple, compact and lightweight, resulting in great reduction of cost for installation and maintenance. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

Detailed Description of the Invention

  The present invention relates to purification of various liquids such as culture solution, purification of gases and gases in various industries, sterilization and purification of drinking water, sterilization of air in facilities and homes, and sterilization using ultraviolet rays. Photocatalyst sterilizer that enhances the treatment effect and the effect of removing harmful substances by photocatalyst

Conventionally, it is like the Example of FIG.5, 6,7,8,9,10,11,12, and in all, the ultraviolet lamp 3 for sterilization was arrange | positioned in the center where the to-be-processed symmetrical object passes.
The arrangement of FIG. 5-11 of the example had a small amount of the object to be processed that passed through the photocatalyst applied to the main body case 4 with a small amount of contact, and the effect of removing harmful substances was small.
An improved example is the arrangement of FIGS. 7-12. The plate is made bellows to increase the photocatalyst surface area. Although the ability to remove harmful substances is higher than the method of FIG. 5, the symmetric substance to be treated does not come into contact with the photocatalyst, and there remains a drawback that the amount of the symmetric substance to be treated cannot be obtained. As a result, there is a disadvantage that the input amount of is also reduced.
A modified example of this is the high density photocatalytic arrangement of FIGS. 9-7. The photocatalyst 7 is in the form of a photocatalyst ball or fine mesh, and the amount of the object to be treated that comes into contact with the photocatalyst increases, and the removal of harmful substances is increased by that amount. There is a drawback in that a symmetrical object to be passed passes through as it is.
FIG. 11 shows that the photocatalyst tank 6 and the sterilization tank 5 are separated in order to solve the drawback, and the sterilizing ultraviolet lamp 3 is arranged in each tank. By arranging the high-density photocatalyst 7 in the photocatalyst tank 6, the object to be processed passes through each tank in order and the efficiency is increased. However, it is much larger to circulate. As described above, there are disadvantages that the equipment becomes large and complicated, and the production cost and maintenance cost also increase.In the conventional technology, the sterilization effect and the harmful substance removal effect are insufficient, and the production cost and maintenance cost are often high. It was.

Problems to be solved by the invention

  The photocatalyst of the photocatalyst sterilizer is excellent in the effect of removing harmful substances, but has a drawback that the response speed is slow and the removal of harmful substances can be performed only on the substance in contact with the surface of the photocatalyst. In addition, ultraviolet light has a high bactericidal effect, but for many bacteria, the growth rate of the bacteria is fast, and a sufficient effect cannot be obtained as the overall performance of the apparatus. Including a circulation part is further complicated, resulting in an increase in manufacturing cost, installation cost, maintenance cost, and the like, resulting in an expensive apparatus.

Means for solving the problem

Two quartz glass tubes with different diameters, double partition, sterilization tank on the inside, photocatalyst tank on the outside, and disinfecting UV lamp in the center of the inside quartz tube, sterilization tank and photocatalyst tank The object to be purified and sterilized is circulated between the sterilization tank and the photocatalyst tank.
The feature is that the sterilization tank and the photocatalyst tank can be configured with a simple structure, the circulation efficiency is good, the circulation is easy, the effect of removing harmful substances and the sterilization effect are further enhanced, the circulation part is also simple and compact, The effects of removing harmful substances and sterilization are high, and the entire device is simple, small, and lightweight, including the tank container of the object to be processed, and the cost can be greatly reduced. The present invention thus greatly improves the problems of the prior art.

The principle and structure of the present invention is as shown in FIG. 1. Two quartz tubes 1 and 2 having different diameters are arranged, and an ultraviolet lamp 3 for sterilization is arranged inside the inside 2. A space is provided between the tubes 2 to form a sterilization tank 5, and a space is provided between the main body case 4 and the quartz tube 1 to form a photocatalyst tank 6.
FIG. 4 shows an embodiment of the present invention, in which a case 9 is provided outside the photocatalyst device, and the object to be treated 10 is sterilized using liquid, removed of harmful substances, and purified.
The object to be treated 10 passes through the sterilization tank 5, but can be sterilized because it is irradiated without blocking the ultraviolet light of the ultraviolet lamp 3 for sterilization. The object 10 that has been sterilized is returned to the photocatalyst tank 6. Since this 6 is not shielded from ultraviolet rays as in the case of 5, it is irradiated without waste, and the effect of removing harmful substances can be improved.
Furthermore, the object to be treated can be refluxed and circulated with a simple structure accompanied by the reflux device 13. Circulating the accumulated harmful substance removal effect and the bactericidal effect with the photocatalyst increases the effect further.
There is a feature that the structure is simple and compact, and such a simple structure, including a reflux device and a tank container for the object to be processed, is a small and simple structure, the cost is greatly reduced, and the object to be processed Depending on the object, it can be installed in various applications and devices.

The invention's effect

  A high-density photocatalyst with high photocatalytic toxic substance removal efficiency can be used, and as a result, the toxic substance removal treatment ability and sterilization treatment ability can be enhanced at the same time. Even if the tank container for the object to be processed is included, the structure is simple and compact, which greatly contributes to the reduction of the manufacturing cost and the maintenance cost. In this way, the practical requirements are sufficiently satisfied, so the culture solution and disinfection solution in the agricultural field, purification of industrial chemicals and liquids, and the sterilization and purification of gases, air and liquids in each industry It can be applied in various fields such as sterilization and purification of emergency drinking water in facilities, purification of water supply / drainage in each household, and purification of indoor environment.

  Plan view of the principle structure of the present invention   Sectional view of the principle structure of the present invention   Plan view of an embodiment of the present invention   Sectional view of an embodiment of the present invention   Example 1 of the prior art. Top view with photocatalyst applied to the inner surface of the case   Example 1 of the prior art. Sectional view with photocatalyst applied to the inner surface of the case   Example 2 of the prior art. Plan view of photocatalyst coated on bellows plate   Example 2 of the prior art. Sectional view of photocatalyst coated on bellows plate   Example 3 of the prior art. Plan view with high density photocatalyst   Example 3 of the prior art. Cross section with high density photocatalyst   Example 4 of the prior art. Plan view of two tanks with separate sterilization tank and photocatalyst tank   Example 4 of the prior art. Cross-sectional view of two tanks with separate sterilization tank and photocatalyst tank

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Outer quartz tube 2 Inner quartz tube 3 Sterilization ultraviolet lamp 4 Photocatalyst apparatus main body case 5 Sterilization tank 6 Photocatalyst tank 7 High density photocatalyst 8 Flow direction of to-be-processed substance 9 Apparatus case 10 To-be-processed substance 11 Photocatalyst 12 apply | coated to case Photocatalyst 13 coated on a plate-like plate

Claims (1)

  The quartz tube 1 and the quartz tube 2 having two different diameters are arranged in the inside of the main body case in FIG. A space is provided between the tube 1 and the quartz tube 2, which is used as the sterilization tank 5, and a space is provided between the main body case 4 and the quartz tube 1 as the photocatalyst tank 6, and the sterilization tank 5 and the photocatalyst tank 6 are integrated. Structured photocatalytic sterilizer.

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