JPH0526197U - Ozone dissolver - Google Patents

Abstract

(57) [Abstract] [Purpose] To provide an ozone dissolution apparatus with excellent dissolution efficiency of ozone in water. [Constitution] Water tank 3 for containing water in which ozone should be dissolved
In the ozone dissolving apparatus 10 having a porous diffuser pipe 31 for supplying ozone from the ozone generator 4 to the bottom of the water tank 3, a large number of spherical bodies made of ozone non-reactive substances are provided inside the water tank 3. Fill 1. The ozone bubbles 22 ejected from the porous diffuser 31 slowly rise between the spherical bodies 1. Therefore, the residence time is long, and the amount of ozone dissolved in water is improved.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 To provide an ozone dissolving device having excellent ozone dissolving efficiency.

[0002]

[Prior art]

 In recent years, a purifying device for purifying water using ozone has been used. There is a method in which ozone, that is, ozone-dissolved water, is added to drinking water to sterilize the microorganisms in it. As a device for producing the ozone-dissolved water, there are conventional ozone-dissolving devices 100 and 101 shown in FIGS. 4 and 5, for example.

That is, the ozone dissolving apparatus 100 shown in FIG. 4 has a water tank 3 and a porous air diffusing pipe 31 provided at the bottom portion 34 of the water tank 3 for supplying ozone. The water tank 3 is provided with a lid 32 having an exhaust port 321 on the upper portion thereof, and the inside thereof is filled with water 2 in which ozone should be dissolved. The porous diffuser 31 has an injection hole 311 and is connected by a pipe 41 to an ozone generator 4 installed outside the water tank 3. The ozone generator 4 is connected to the air pump 5 by a pipe 42.

Next, the operation of producing ozone-dissolved water in the ozone dissolution apparatus 100 will be described. First, air is sent to the ozone generator 4 through the pipe 42 by the air pump 5. In the ozone generator 4, ozone is produced from oxygen in the air. Then, the air containing ozone is sent to the porous diffuser pipe 31 through the pipe 41 and is injected into the water in the water tank 3 through the injection hole 311. Then, it becomes ozone bubbles 22 and rapidly rises in the water due to the buoyancy. Meanwhile, the ozone bubbles 22 are dissolved in the water 2 by coming into contact with the water 2 and become ozone-dissolved water. On the other hand, the residual ozone that cannot be dissolved is discharged from the exhaust port 321 provided in the lid 32 at the upper part of the water tank.

On the other hand, in the ozone dissolving apparatus 101 shown in FIG. 5, several baffle plates 30 are attached to the inside of a water tank 33 in a stepwise manner. Each baffle plate 30 is inclined, and the tip 302 of the baffle plate 30 is higher than the attachment part 301 of the water tank 33. Others are the same as those of the ozone dissolution apparatus 100 of FIG. Next, the operation of ozone-dissolving device 101 to produce ozone-dissolved water will be described. In the ozone dissolving apparatus 101, the ozone bubbles 22 are jetted from the jet holes 311 of the porous diffuser pipe 31 like the ozone dissolving apparatus 100 of FIG.

The ozone bubbles 22 rise in the water while hitting the baffle plate 30 due to the buoyancy. Meanwhile, the ozone bubbles 22 are dissolved in the water 2 by coming into contact with the water 2 and become ozone-dissolved water. On the other hand, the residual ozone that cannot be dissolved is discharged from the exhaust port 321 provided in the lid 32 at the upper part of the water tank.

[0007]

[Problems to be solved]

 However, in the conventional ozone dissolving apparatus 100 shown in FIG. 4, the ozone bubbles 22 rise rapidly in the water filled in the water tank 3. Therefore, the contact time with the water 2 is short, and most ozone does not dissolve in the water 2 and escapes to the outside of the water tank 3, so that a high concentration of ozone-dissolved water cannot be obtained.

On the other hand, in the ozone dissolving apparatus 101 shown in FIG. 5, since the ozone bubbles 22 rise while hitting the baffle plate 30, the rising path in the water 2 is longer than that of the ozone dissolving apparatus 100 in FIG. However, adjacent ozone bubbles 22 easily contact each other, and the ozone bubbles 22 merge and become large, and the contact surface area between water and ozone decreases. Further, since the contact surface area is reduced, the ascending speed of the ozone bubble 22 is increased and the contact time with the water 2 is also reduced. Therefore, the dissolution efficiency of ozone does not improve. In view of such conventional problems, the present invention intends to provide an ozone dissolution apparatus having excellent ozone dissolution efficiency.

[0009]

[Means for solving the problem]

 The present invention relates to an ozone dissolution apparatus comprising a water tank for containing water in which ozone should be dissolved and a porous diffuser tube for supplying ozone from an ozone generator at the bottom of the tank. The above-mentioned water tank is filled with a large number of spherical bodies made of substances that do not react with ozone.

The spherical body is made of a substance that does not react with ozone. As such a spherical body, for example, glass beads, ceramics, ceramics, metal or plastic can be used. The spherical body preferably has a spherical shape. It is also possible to have an oval shape or an oblong sphere. The diameter is preferably 10 to 30 mm. If the diameter is less than 10 mm, the aeration resistance of ozone bubbles in water is large, the rising speed in the water is slower than the injection speed of ozone bubbles from the porous diffuser, and the ozone bubbles stay at the bottom of the water tank. Convection of bubbles in water will not be performed smoothly. On the other hand, when the diameter exceeds 30 mm, the gap between the spherical bodies becomes large, and the residence time of ozone in water becomes short, and it is not possible to obtain concentrated ozone-dissolved water.

[0011]

[Action and effect]

 In the present invention, a large number of spherical bodies are filled in the water tank. When dissolving ozone, ozone is injected into the water in the water tank from a porous diffuser. The ejected ozone bubbles try to rise in the water, but there are many spherical bodies in the water. Therefore, the ozone bubbles rise as if weaving the gap between the spherical bodies. As a result, the path for ozone bubbles to rise in the water becomes longer, and it takes time for ozone bubbles to reach the water surface.

Therefore, the contact time between water and ozone becomes long, and ozone can be effectively dissolved in water. As described above, according to the present invention, it is possible to provide an ozone dissolving device having excellent ozone dissolving efficiency.

[0013]

【Example】

 An ozone dissolving apparatus according to an embodiment of the present invention will be described with reference to FIGS. First, as shown in FIG. 1, the ozone dissolution apparatus 10 includes a water tank 3 for containing water 2 in which ozone is to be dissolved, and a porous portion for supplying ozone from an ozone generator 4 to a bottom portion 34 of the water tank 3. And a sex diffusing tube 31. The water tank 3 is filled with a large number of spherical bodies 1 made of a substance that does not react with ozone.

In this example, the water tank 3 is provided with a porous diffuser pipe 31 having an injection hole 311 at a bottom portion 34 and a lid 32 having an exhaust port 321 at an upper portion. Further, the inner portion of the water tank 3 is filled with a large number of glass balls having a diameter of 20 mm as the spherical body 1. Then, the water 2 is added to the water tank 3 up to the height H filled with the glass beads 1. Further, the porous diffuser pipe 31 is connected by a pipe 41 to the ozone generator 4 installed outside the water tank 3. Others are the same as in the conventional example.

Next, a method for producing ozone-dissolved water by the ozone dissolution apparatus 10 will be described. First, air is sent to the ozone generator 4 through the pipe 42 by the air pump 5. In the ozone generator 4, ozone is produced from oxygen in the air. Then, this ozone is sent to the porous diffuser pipe 31 through the pipe 41, and is injected into the water 2 in the water tank 3 through the injection holes 311. Then, it becomes ozone bubbles 22 and tries to rise in the water 2 by its buoyancy.

However, since the glass balls as the spherical body 1 are filled in the water tank 3, the ozone bubbles 22 ascend between the glass balls as shown in FIG. Therefore, the ascending path of the ozone bubbles 22 becomes long and the contact time with the water 2 also becomes long. Therefore, concentrated ozone-dissolved water can be produced.

[0017]

[Experimental example]

 Next, FIG. 3 shows an experimental example of ozone dissolution using the ozone dissolution apparatus. That is, first, three types of water tanks a, b, and c are prepared. The three types of aquariums are cylindrical. Further, the same porous diffuser pipe 31 is provided, and the water tanks a, b, and c each contain the same amount of water of 500 ml. In addition, the water tank a has a diameter D of 64 mm, contains 110 glass beads having a diameter of 20 mm, and the water level is H. The water tank b does not contain the glass beads as the spherical body 1, the diameter D is 64 mm like the water tank a, and the water level is h. Like the water tank b, the water tank c does not contain glass beads, the diameter d is reduced to 44 mm, and the water level is set to the same H as the water tank a.

Next, ozone dissolution experiments were carried out using an ozone dissolution apparatus equipped with each of the three types of water tanks a, b, and c described above. In each ozone dissolution apparatus, ozone gas was injected from the porous air diffusing tube 31 at a rate of 4 l / min for 2 minutes. This ozone gas contained 2000 ppm of ozone in the air. Then, the ozone dissolved concentration in the water in the water tanks a, b, and c at that time was measured.

As a result, the ozone dissolution concentration was 3.0 mg / liter in the water tank a, 0.5 mg / liter in the water tank b, and 2.0 mg / liter in the water tank c. As is known from the above, when the water tank a according to the present invention is used, the concentration of dissolved ozone is highest.

[Brief description of drawings]

FIG. 1 is a sectional view of an ozone dissolution apparatus according to an embodiment.

FIG. 2 is an explanatory view showing a state where ozone bubbles rise between spherical bodies in the example.

FIG. 3 is a cross-sectional view of three types of water tanks in an experimental example.

FIG. 4 is a sectional view of a conventional ozone dissolving apparatus.

FIG. 5 is a sectional view of another conventional ozone dissolving apparatus.

[Explanation of symbols]

 1. ． ． Spherical body, 2. ． ． Water, 3,33. ． ． Aquarium, 4. ． ． Ozone generator, 5. ． ． Air pump, 10, 100, 101. ． ． Ozone dissolving device, 22. ． ． Ozone bubbles, 30. ． ． Baffle plate, 31. ． ． Porous diffuser,

Claims (1)

[Scope of utility model registration request] 1. An ozone dissolution apparatus comprising a water tank for containing water in which ozone is to be dissolved and a porous diffuser pipe for supplying ozone from an ozone generator to the bottom of the water tank. An ozone dissolving device characterized in that a large number of spherical bodies made of substances that do not react with ozone are filled in the water tank.