JPS61245890A - Control apparatus of ozone generator - Google Patents

Abstract

PURPOSE:To enhance the safety of an ozone generator, by mounting a means for stopping the supply of a current to an ozone generation means for a predetermined time before entering an ON-time when the intermittent operation of the supply of a current is newly started. CONSTITUTION:At the ON-time of a power source 6, the supply of a current to an ozone generator 1 is stopped only for a stop time TD in a step 101. Next, the supply of a current to the ozone generator 1 is performed for an ozone generating period TON in a step 102 to perform the generation of ozone. Subse quently, the supply of a current to the ozone generator 1 is interrupted for an ozone distincting period TOFF (e.g., 1hr) in a step 103 to distinct ozone 10. On and after, as far as the power source 6 is succeedingly turned ON, the ozone generator 1 steadily repeats ON/OFF in the steps 102, 103.

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical field to which the invention pertains] The present invention relates to a device for controlling an ozone generator that injects ozone into drinking water or the like and removes germs from the water.

[Prior art and its problems]

In the following description of each figure, the same reference numerals indicate the same or corresponding parts.

FIG. 3 is a block diagram showing a schematic configuration of an ozone sterilization system for drinking water as an example of this type of system, FIG. 4 is a time chart explaining the operation of the main parts of FIG. 3, and FIGS. FIG. 6 is a time chart showing an example of changes in the amount of ozone corresponding to the operating frequency of the power supply ions.

In Fig. 3, 1 is an ozone generator, and an ozone generator tube 1
It is composed of a high-pressure transformer 1b, a high-frequency generator, etc. 2 is a three-way valve, which has the role of switching the air sent from the air pump 4 to the ozone generator direction 2a or the outside air direction 2b.

3 is a drying heater, which heats a desiccant (not shown) placed near the # heater, expels moisture absorbed by it, and restores its drying function. Note that this desiccant is used to absorb moisture from the air sent from the air pump 4 to the ozone generator 1 side and facilitate ozone generation.

Reference numeral 5 denotes a timer control unit consisting of a CPU, etc., which controls each of the above-mentioned means 1.
-4 control the operation timing.

Reference numeral 6 denotes a power source for this timer control unit 5, and 11 a water valve, which opens and closes drinking water such as tap water to be sterilized. A water reservoir 12 is used to temporarily store drinking water supplied from the outside via the water valve 11. Air containing ozone (also referred to as ozonized air) is supplied to this water reservoir 12 from the three-way valve 2 side via the ozone generator 1.
This sterilizes the water in the water reservoir 12. Reference numeral 13 denotes an ozone removal filter made of activated carbon or the like, and potable-ζ is used to remove harmful residual ozone to a permissible amount or less. Reference numeral 14 supplies sterilized drinking water to an outside of the diagram by a water pump.

Next, in FIG. 4 #, (υ~(ship) shows the timing at which the ozone generator 1, air pump 4, drying heater 3, and three-way valve 2 are operated by the timer control unit 5. That is, at the time tO ~t2, the three-way valve 2 is turned on and opened toward the ozone generator 2a, and the air sent out by the air pump 4 is dehumidified by the desiccant in the dry heater 3 (non-energized) section. is supplied to the water reservoir 12 via the ozone generator 1. During this time, the time tQ-=tl
During this period (period TON), the ozone generator 1 is energized and ozone is generated.

During the subsequent time points t2 to t4, the three-way valve 2 is turned off and switched to open in the external direction 2b, and
Air pump 4 continues to operate.

During this period, the drying heater 3# is energized for a period from 1 point t2 to t3, and the desiccant provided in this part -ζ is heated.
This water is discharged into the outside air direction 2b.
I can't handle being ejected to the side.

During the next period from time t4 to t5, the three-way valve 2 is turned on again and switched to open toward the ozone generator direction 2a, and the ozone generator l is turned on again.

Pump 4. The heater 3 is turned off, and during this time the heater temperature returns from a high temperature to a normal value. From time t5, time tQ- again,
-t5 (one cycle period Tl) is repeated.

Next, in Fig. 5 and Fig. 6 fζ, (υ, (2) respectively indicate the on/off σ timing of the power supply 6 and ozone generator 1), and (3) indicate the ozone amount 10 in the water reservoir 12. .

Further, tp (tpr~tp3~) indicates the time when the power source 6 is turned on (referred to as the power-on time point). 108 is the amount of ozone (referred to as ozone saturation level) when the dissolution of ozone into the water in the water reservoir 12 reaches a saturated state.

As shown in FIG. 5, at the power-on time point tp, the ozone generator 1 immediately starts to be energized, and the power supply 6
σ) During the on period, the energization to the ozone generator 1 is repeated on and off every cycle period Tl, and accordingly, the ozone amount 10 gradually increases during the energization period (also referred to as the ozone generation period) TON. , repeat the action. For example, the ozone generation period TON is approximately 15 minutes, and the ozone extinction period TOFF is approximately 15 minutes.
It is set to about an hour.

The reasons why the ozone generator 1 is operated intermittently are as follows: ■ If ozonated air is continuously injected into water, it will reach a certain level (ozone saturation level + 108) and - ■ Even a small amount of ozone will be extremely harmful to the human body. Because it is harmful, such l(
Leaking must be avoided at all costs.

■Therefore, after injecting ozone to a certain level below the ozone saturation level 108, it is necessary to stop ozone injection for a certain period of time (at least about 1 hour) until the ozone naturally decomposes and disappears as oxygen. There is.

For the above reasons (■ to ■σ), intermittent operation is performed in which ozone injection and ozone injection stop are repeated.

By the way, the power supply for the timer control unit 5 is turned on and off at 6σ] by 8N.
When the power-on time tp (tpl-tp3~) in Fig. 6 is repeated in a short period of time, -ζ does not allow enough time for the ozone to disappear, so the ozone tt.

As shown, ozone in the water in the water reservoir 12 accumulates, and eventually exceeds the saturated level 108, causing ozone to leak into the air at an ozone leakage amount of 10L (shaded area) σ]. As mentioned above, this kind of ozone leakage is a serious problem from a safety point of view, as ozone can even lead to death.

[Purpose of the invention]

An object of the present invention is to provide a control device that can eliminate the above-mentioned problems and improve the safety of an ozone generator.

[Key points of the invention]

The key point of the present invention is that in the ozone sterilization system tζ for drinking water, etc., the ozone contained in the water in the water reservoir must be completely eliminated from the time the power is turned on until the ozone injection is performed intermittently. By providing a downtime and turning the power on and off for a short time, the amount of ozone in the water does not accumulate and is always kept below the ozone saturation level. The purpose is to prevent leakage into the air and ensure the safety of the system.

In other words, the main points of the present invention are ozone generating means (such as an ozone generator) that repeats intermittent operation of energization for predetermined on and off times, and ozone generated through the ozone generating means for the on time +C. means for injecting the water to be sterilized (air pump, water reservoir, etc.);
In a system with

When starting a new intermittent operation of energization, a means (such as a timer control unit) is provided to suspend energization to the ozone generating means for a predetermined period of time (such as a rest time) until the on-time begins. This is what I did.

[Embodiments of the invention]

The present invention will be described in detail below based on FIGS. 1 and 2. FIGS. 1 and 2 are time charts and flow charts for explaining the operation of an embodiment of the present invention.
The figure corresponds to FIG. 6 in prior art #C.

In Fig. 11ζ, tp (tp1 to tp3) is the time when the power supply 6 is turned on (power-on time) as described above, and TD is immediately after the power supply 6 is turned on, and each time σ] is the time when the ozone generator is This is the pause time during which the intermittent operation is paused.

To explain FIG. 2, when the power supply 6 is turned on, first in step lot, the supply of electricity to the ozone generator 1 is suspended for the above-mentioned suspension time TD. This time is set to, for example, one hour. As a result, it is assumed that the water reservoir 12 is
Even if the amount of ozone contained in the water is 10 high, this amount of ozone is 10.
0 is the pause time TI'')+, which is sufficient to decompose and disappear.

In the next step 102, the ozone generation period TON is
The ozone generator 1 is energized for a period of (for example, 15 minutes) to generate ozone. The next step is step 103, where the ozone generator 1 is turned off during the ozone extinction period TOFF (for example, 1 hour).

Eliminate 10 ozone amounts. Thereafter, as long as the power source 6 continues to be on, the ozone generator 1 repeats steady on and off (with one cycle period TI as a period) in steps 102 and 103. However, if the power supply 6 is once turned off and then turned on again, the above-mentioned pause operation from step 101 will be performed first.

〔Effect of the invention〕

As is clear from the above description, according to the present invention, each time the power is turned on, the amount of ozone necessary to eliminate the amount of ozone in the drinking water in the water reservoir is determined prior to the steady intermittent operation of the ozone generator. Establishing a downtime for the ozone generator
Therefore, even if the power of the Cζ timer control unit is repeatedly turned on and off for a short period of time, the amount of ozone in drinking water will not accumulate and exceed the saturation level, preventing ozone leakage and improving the safety of the ozone sterilization system. The effect is guaranteed.

[Brief explanation of the drawing]

FIG. 1 is a time chart explaining the operation of an embodiment of the present invention, and FIG.
FIG. 3 is a block diagram showing a schematic configuration example of an ozone sterilization system for drinking water, and FIGS. 4 to 6 are time charts illustrating changes in the operation or characteristics of the conventional main parts in FIG. 3. 1...Ozone generator, 2...3-way valve,
3... River drying heater% 4... Air pump, 5... Song timer control section %6... Power supply, 10...
... Ozone amount, 108 ... Ozone saturation level % 12 ... Water reservoir % T1 ...
・1 cycle period, TD...rest time, TON
...Ozone generation period, TOFF...Ozone extinction period, tp (tp1~tp3~)...
When the power is turned on. tP: 1ml when electricity is on, ? 2WA Figure 4 tp,? Figure 5

Claims (1)

[Scope of Claims] 1) Ozone generating means that repeats intermittent operation of energization at predetermined on and off times, and ozone generated through the ozone generating means during the on time to water, etc. to be sterilized. A system comprising a means for injecting ozone, the system comprising a means for suspending energization to the ozone generating means for a predetermined period of time until the on-time begins when the intermittent operation of energization is newly started. A control device for an ozone generator characterized by: