JPH11333464A - Sterilizer - Google Patents

Abstract

(57) [Summary] [PROBLEMS] The conventional method of adding a chemical solution to raw water has a slight drawback in that, for example, when used in applications such as cleaning food, safety to the human body is not guaranteed. There is a problem that there is anxiety. SOLUTION: When a voltage is applied between two electrodes 5 and 6 in a sterilization tank 1 by a voltage generating means 7, the two electrodes 5 and 6 are supplied with a pump 4 because they have a waveform. The raw water passing between the electrodes becomes a turbulent flow, and the bacteria in the raw water can be forcibly moved to the strong electric field region, and the bacteria in the raw water are killed to obtain treated water that can be used for drinking. It is a sterilizer.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sterilizer capable of treating raw water to be used aseptically and safely.

[0002]

2. Description of the Related Art For example, water containing a chemical solution such as benzerkonium chloride or hypochlorous acid is mixed with raw water containing bacteria such as Escherichia coli to supply aseptically to plants or to wash hands. You can use it as a wash water or something. At this time, the drug solution acts to destroy cell membranes of bacteria such as Escherichia coli, destroy proteins, or react with active groups of enzymes to kill bacteria such as Escherichia coli.

[0003]

However, the above-mentioned conventional method has some anxiety in that, for example, when it is used for cleaning foods, safety to the human body is not guaranteed. Has issues.

[0004]

According to the present invention, a high voltage is applied between electrodes to sterilize bacteria in raw water by the generated electric field, so that the human body is safe and the treated water is drinkable. It is a sterilizer that can be provided.

[0005]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The invention described in claim 1 is characterized in that when a voltage is applied between two electrodes in a sterilization tank by a voltage generating means, the two electrodes have a waveform, so that the pump The raw water passing between the electrodes supplied by the turbulent flow becomes a turbulent flow, the bacteria in the raw water can be forcibly moved to the strong electric field area, the bacteria in the raw water can be killed, and the drinking water can be treated It is a sterilizer that obtains water.

According to a second aspect of the present invention, the efficiency is improved by providing two comb-tooth-shaped electrodes in a sterilization tank so that the teeth of the electrodes are overlapped in parallel and applying a voltage between the electrodes. The sterilizer is capable of high processing.

According to a third aspect of the present invention, two electrodes having a curved portion are arranged in parallel and used as a sterilization tank, and a voltage is applied between the electrodes.
The sterilizer is capable of highly efficient processing.

[0008]

(Embodiment 1) A first embodiment of the present invention will be described below. FIG. 1 is a block diagram illustrating the configuration of the present embodiment. The sterilization tank 1 includes a guide pipe 2 for guiding raw water,
And a drain pipe 3 from which the treated water is drained. Drain pipe 3
Is connected to a pump 4. In the sterilization tank 1,
Two electrodes 5 and 6 are provided. The two electrodes 5 and 6
Each section has a waveform. For this reason, the raw water guided from the guide tube 2 contains two electrodes 5.6
As turbulence. Reference numeral 7 denotes voltage generating means for supplying a voltage between the two electrodes 5 and 6.
The voltage generating means 7 is formed by a converter that converts a commercial AC voltage into a DC.

The operation of this embodiment will be described below. Pump 4
Is driven to supply raw water from the guide tube 2 to the sterilization tank 1, a DC voltage between the electrodes 5 and 6 is applied to the raw water in the sterilization tank 1.

FIG. 2 shows a voltage V applied between the electrode 5 and the electrode 6.
And the distance d between the electrodes, the electric field E, the size of the bacteria dk,
It is explanatory drawing explaining the voltage Vk applied to a germ. Between the voltage V, the distance d between the electrodes, and the electric field E, V = E · d
The relationship of (V) is established. In addition, the size of the bacteria is dk
Then, the voltage Vk applied to both ends of the bacteria is Vk = E · d
k = (dk / d) · V (V).

The voltage Vk applied to both ends of the bacterium is about 0.7
It is thesis that the cells of bacteria are destroyed and the bacteria are killed when the pressure exceeds V. Masayuki Sato, "Microorganism Sterilizers and Related Technologies in the Future", Food and Containers, Vol. 35, NO. 6, P
308 to P314. Further, according to the paper, when an electric field is generated by an impulse-shaped voltage having a pulse width of several tens of μsec, the pulse width is shorter than the mobility of ions of water and other substances of treated water, so that water and other Electrolysis due to ions of the substance is unlikely to occur.

However, when the raw water is sterilized by a high voltage for a long period of time, ions are generated to a small extent, and negative ions adhere to the positive electrode 5 and the negative electrode 6
Has a positive ion attached thereto. The attached ions act to prevent the electric field distribution between the electrodes from becoming uniform. FIG. 3 illustrates the influence of the ions. FIG. 3A shows the distance from the plus electrode 5 to the minus electrode 6 shown on the horizontal axis. (B) shows the voltage distribution during this period,
(C) shows the distribution of the electric field intensity during this time. As shown in FIG. 3B, the distribution of the voltage V decreases by V1 near the plus electrode 5 due to the attached negative ions and decreases by V2 near the minus electrode 6 due to the plus ions. Although the voltage actually applied between the electrode 5 and the electrode 6 is V (V), the actually applied voltage is V-V1-V2 (V). In addition, the distribution of the electric field intensity at this time is extremely high in the vicinity of the plus electrode 5 and the minus electrode 6 for the above reason, as shown in FIG. The electric field strength (V / m) near the electrodes 5 and 6 is given by E = V
/ D, which is a strong electric field region since the thickness d of the attached ions is extremely thin.

In this embodiment, the cross-sectional shapes of the electrodes 5 and 6 are corrugated. Therefore, the raw water passing between the electrode 5 and the electrode 6 becomes a turbulent flow. Therefore, the bacteria in the raw water forcibly move to the strong electric field region.

As described above, according to the present embodiment, the sterilizing tank 1
When a voltage is applied between the two electrodes 5 and 6 by the voltage generation means 7, the electrodes 5 and 6 have a waveform, so that the raw water passing between the electrodes 5 and 6 supplied by the pump 4 is It is a turbulent flow that can forcibly move bacteria in raw water into the strong electric field area, kill bacteria in raw water, and realize a sterilization device that obtains treated water that can be used for drinking. is there.

(Embodiment 2) Next, a second embodiment of the present invention will be described. FIG. 4 is a sectional view showing the configuration of the present embodiment. In this embodiment, two comb-shaped electrodes 1
0.11 is provided. As shown in the figure, the comb-shaped electrodes 10 and 11 are arranged so that the teeth of the comb are parallel to each other, and raw water passes between the electrodes 10 and 11. Raw water is supplied from a guide pipe 2 provided at the lower end of the sterilizing tank 1, and is drained by a pump 4 from a drain pipe 3 arranged diagonally to the guide pipe 2. Although not shown, a voltage is applied between the electrodes 10 and 11 by voltage generating means.

The operation of this embodiment will be described below. Since the comb-shaped electrodes 10 and 11 of this embodiment are provided so that the comb-shaped teeth are parallel to each other, the electrodes 10 and 11
The distance between them is reduced, and the electric field strength is increased accordingly. The root of the teeth of the comb acts so as to make the raw water turbulent when the raw water collides.
Therefore, according to the present embodiment, it is possible to kill bacteria in raw water more efficiently than with the configuration shown in the first embodiment.

(Embodiment 3) Next, a third embodiment of the present invention will be described. FIG. 5 is an explanatory view showing the configuration of the sterilization apparatus of this embodiment. In this embodiment, the sterilization tank itself is constituted by two electrodes 20 and 21. Two electrodes 20
21 has both curved portions as shown in the figure and is arranged in parallel. Thus, the raw water is supplied from one end and the treated water is drained from the other end by using a pump as necessary. A voltage is applied to the two electrodes 20 and 21 by voltage generating means (not shown).

The operation of the embodiment will be described below. In the present embodiment, since the water is passed between the two electrodes 20 and 21 having the curved portions, the raw water surely forms a turbulent flow. For this reason, as described in each of the embodiments, the bacteria in the raw water move to the strong electric field region. Further, since the two electrodes 20 and 21 are parallel, the distance between the electrodes 20 and 21 is constant at any place.

Therefore, according to the present embodiment, the raw water can be treated with a very high efficiency, and since the sterilization tank itself is constituted by the two electrodes 20 and 21, the constitution is very simple. .

[0020]

According to the first aspect of the present invention, there is provided a sterilizing tank having two electrodes having a corrugated cross section, voltage generating means for generating a voltage to be supplied to the sterilizing tank, and raw water being supplied to the sterilizing tank. As a configuration with a supply pump, a sterilizer that can forcibly move bacteria in raw water to the strong electric field area, kills bacteria in raw water, and obtains treated water that can be used for drinking It will be realized.

According to a second aspect of the present invention, there is provided a sterilization tank having two comb-shaped electrodes stacked so that the teeth of the comb are parallel, and a voltage generating means for generating a voltage to be supplied to the sterilization tank. And a pump for supplying raw water to the sterilizing tank, thereby realizing a sterilizing apparatus capable of performing highly efficient processing.

According to the third aspect of the present invention, there is provided a simple configuration comprising two parallel electrodes having a curved portion and voltage generating means for generating a voltage to be supplied to the sterilizing tank. And a sterilizer capable of performing highly efficient processing.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a configuration of a sterilization apparatus according to a first embodiment of the present invention.

FIG. 2 is an explanatory diagram for explaining a voltage applied to bacteria.

3A is an explanatory view illustrating a distance between electrodes, and FIG. 3B is an explanatory view illustrating a distribution of a voltage between the electrodes. FIG. Figure

FIG. 4 is a sectional view showing the configuration of a sterilization apparatus according to a second embodiment of the present invention.

FIG. 5 is a sectional view showing a configuration of a sterilization apparatus according to a third embodiment of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Sterilization tank 2 Guide pipe 3 Drain pipe 4 Pump 5 Electrode 6 Electrode 7 Voltage generation means

Claims (3)

[Claims] 1. A sterilizing apparatus comprising: a sterilizing tank having two electrodes having a corrugated cross section; voltage generating means for generating a voltage to be supplied to the sterilizing tank; and a pump for supplying raw water to the sterilizing tank. . 2. A sterilization tank having two comb-shaped electrodes stacked so that the teeth of the comb are parallel to each other, voltage generating means for generating a voltage to be supplied to the sterilization tank, Disinfection device provided with a pump for supplying to a bacterium. 3. A sterilization apparatus comprising: two parallel electrodes having a curved portion; and voltage generating means for generating a voltage to be supplied to the sterilization tank.