JPH0417151Y2 - - Google Patents

Description

[Detailed Description of the Invention] Purpose of the Invention [Field of Industrial Application] The present invention relates to an improvement of a sterilizing tank for sterilizing air by utilizing the sterilizing power of silver.

[Conventional technology]

For example, if compressed air used for medical purposes such as dentistry or otorhinolaryngology contains bacteria, these bacteria can enter the body through the mouth and nose and cause secondary infections, so it must be sterilized.

This kind of air sterilization device is used by having multiple cylinders with different diameters with multiple openings in the peripheral wall and silver plating on the inside and outside surfaces with the same central axis inside, and connecting the sterilization tank to the compressor. A device has been proposed.

[Problem that the invention attempts to solve]

However, in conventional sterilization tanks, the openings in the cylindrical peripheral wall are cut and raised into, for example, a half-moon shape, making it difficult to reduce the opening area of each opening and to provide a large number of them. The contact efficiency is poor and a large number of cylinders are required, which inevitably increases the size and cost of the device.

The present invention has been made in view of these problems, and aims to provide a sterilization tank that has good contact efficiency between air and silver, is compact, and can be manufactured at low cost.

DESCRIPTION OF THE PREFERRED EMBODIMENTS [Means for solving problems] The present invention will be specifically described below with reference to drawings showing embodiments.

Fig. 1 is a longitudinal cross-sectional view of the sterilization tank of the present invention, Fig. 2
Figure 1 is a cross-sectional view taken along the - line in Figure 1, Figure 3 is a front view of the cylindrical pipe with the smallest diameter in Figure 1, Figure 4 is a side view of Figure 3, and Figure 5 is the bottomed tube shown in Figure 1. An enlarged longitudinal cross-sectional view of the body is shown.

In these figures, the sterilization tank A of the present invention
The tank body 1 has an inlet 2 at one end and an outlet 3 at the other end, and a plurality of cylindrical pipes 4A, 4 having different diameters arranged concentrically inside the tank body 1.
B, 4C... and a bottomed cylindrical body 5 made of sintered metal attached to one end of the smallest diameter cylindrical pipe 4A, and both openings of each of the cylindrical pipes have one end attached to the bottomed cylindrical body. 5 is closed except for the cylindrical pipe 4A of the smallest diameter which communicates with the introduction port 2 through the pipe 5,
Also, a large number of slits 6 are provided in the peripheral wall of each cylindrical pipe, and the slits 6 of at least the adjacent cylindrical pipes 4A and 4B, 4B and 4C, etc. are staggered so that they are not aligned in the radial direction of the cylindrical pipe 4A with the smallest diameter. Furthermore, the inner and outer surfaces of each cylindrical pipe, the inner surface of the bottomed cylinder 5, and the tank body 1 are plated with silver.

In Fig. 1, the tank body 1 has end plates 1b and 1b', each having an inlet 2 and an outlet 3, welded to both sides of a cylindrical body 1a, but they may also be connected by flanges. .

Each of the cylindrical pipes 4A, 4B, 4C, . . . is made of silver plating such as copper and a metal material that is easy to process. These cylindrical pipes are positioned and fixed by three stay bolts 9 and nuts 10 between a reference disk 7 having an opening 7a in the center and a cylindrical holding plate 8, and the openings at both ends are located at the top located at the center. It is closed except for the small diameter cylindrical pipe 4A.

That is, as shown in FIG. 3, since the size of the circle (cylindrical pipe 4A) is determined by three points, three stay bolts 9 are arranged in a direction of, for example, 120 degrees from the center O.
It can be positioned by standing it up and inscribing it in a circle. In this way, the peripheral wall of each cylindrical pipe is formed with a cutout piece 11 that is cut and raised inward to engage with the stay bolt 9 in the axial direction. A large number of slits 6 are formed on the peripheral wall of each cylindrical pipe.
As shown in FIGS. 2 and 3, when assuming a line segment P of an arbitrary radius on the cylindrical pipe 4A with the smallest diameter, at least the adjacent cylindrical pipes 4A and 4
In B, 4B, and 4C..., the slits 6 are not aligned on the line segment P, but are formed alternately, and are arranged so as to prevent air from moving forward and cause turbulence.

The bottomed cylindrical body 5 made of sintered metal is preferably made of gunmetal, which is a type of bronze, and has numerous pores of 30 to 120 microns, particularly about 60 microns. This bottomed cylindrical body 5 has a flange 5a on the open end side, and a screw 5b is carved on the outer periphery, and is fixed to the opening 7a of the reference disk 7 with a nut 5c.

The inner surface of the tank body 1, the inner and outer surfaces of each cylindrical pipe,
Each of the bottomed cylinders 5 is preliminarily plated with silver by a known method such as metal vapor deposition, chemical plating, or coating with a silver compound and applying heat to precipitate silver.

Each cylindrical pipe and the bottomed cylinder 5 are positioned and fixed to the reference disk 7 as described above, and then the plate 7 is welded and fixed to the end plate 1b of the tank body 1.
12 is a drain.

[Effect]

According to the sterilization tank A of the present invention, the tank body 1
The air having an appropriate amount of moisture flowing in from the inlet 2 of the sintered metal tube 5 passes through the pores of the sintered metal cylinder 5, flows into the cylindrical pipe 4A with the smallest diameter, passes through its numerous slits 6, and then passes through the cylindrical pipe 4A. Outer cylindrical pipes 4B, 4C...
It passes through the slits 6 and is discharged from the outlet 3 while coming into contact with the silver plated on the pore surface of the bottomed cylinder 5 and on the inner and outer surfaces of each cylindrical pipe.

A turbulent region is formed in the air by the pores of the bottomed cylinder 5 made of sintered metal and the large number of slits 6 arranged in a zigzag manner between the cylindrical pipes 4A, 4B, 4C, etc., so that silver and The contact efficiency is good and the sterilization effect is high. In addition, the opening ratio of the bottomed cylinder 5 made of sintered metal is large, and the slits 6 of each cylindrical pipe have a simple structure and can be opened in large numbers, so it is easy to increase the opening ratio, the pressure loss is small, and the compressor Power costs can also be kept low.

The bactericidal effect of silver or silver ions is well known, and it can kill germs contained in the air, such as fungi, bacteria, Escherichia coli, Rickettsia, etc., and provides clean air. Due to the presence of a large number of slits and a bottomed cylinder made of sintered metal, clean air from which dust and the like in the air are removed can be obtained.

Effects of the invention As explained above, the sterilization tank of the invention has a simple structure and high contact efficiency between air and silver.
It requires fewer cylindrical pipes, is suitable for downsizing, and can be manufactured at low cost.
In addition, the sterilization effect is greatly increased by incorporating a bottomed cylinder made of sintered metal and plated with silver.

[Brief explanation of the drawing]

Fig. 1 is a longitudinal sectional view of a sterilizing tank showing an embodiment of the present invention, Fig. 2 is a sectional view taken along the - line in Fig. 1, and Fig. 3 is a front view of the cylindrical pipe with the minimum diameter shown in Fig. 1. 4 is a side view of FIG. 3, and FIG. 5 is an enlarged vertical sectional view of the bottomed cylinder of FIG. 1. 1...tank body, 2...inlet, 3...discharge port, 4A, 4B, 4C~...cylindrical pipe, 5...
Bottomed cylinder, 6...slits.

Claims (1)

[Scope of utility model registration request] A tank body 1 having an inlet 2 at one end and an outlet 3 at the other end, and a plurality of cylindrical pipes 4A, 4 having different diameters arranged concentrically within the tank body 1.
B, 4C... and a bottomed cylindrical body 5 made of sintered metal attached to one end of the smallest diameter cylindrical pipe 4A, and both openings of each of the cylindrical pipes have one end attached to the bottomed cylindrical body. The pipes are closed except for the cylindrical pipe 4A with the smallest diameter, which communicates with the introduction port 2 through the pipe 5,
In addition, a large number of slits 6 are provided in the peripheral wall of each cylindrical pipe, and the slits 6 of at least the adjacent cylindrical pipes 4A and 4B, 4B and 4C, etc. are staggered so that they are not aligned in the radial direction of the cylindrical pipe 4A with the smallest diameter. A sterilizing tank characterized in that the inner and outer surfaces of each cylindrical pipe, the inner surface of the bottomed cylinder 5 and the tank body 1 are plated with silver.