JPS61249591A - Control device for ozone generator - Google Patents

Abstract

PURPOSE:To inspect air leakage of an ozone injecting piping system and to prevent the inadvertent leakage of ozone to the outside by controlling an ozone generating means so as to start ozone generation upon lapse of the prescribed time or above at least after driving of an air delivery means. CONSTITUTION:The ozone generating means 1 is controlled by a sequential timer TM to start the ozone generation upon lapse of the prescribed time or above at least after the driving of the air delivery means P in a system for injecting the air ozonized by the means 1 into water or the like to be sterilized via the means P. As a result, the leakage of the air from the ozone injection piping system is inspected within the prescribed time and the inadvertent leakage of the ozone to the outside is prevented.

Description

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

[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, and FIG. 4 is a time chart illustrating the operation of the main parts of FIG. 3.

In Fig. 3, 1 is an ozone generator, and an ozone generator tube 1
a, a high voltage transformer Ib, a high frequency generator IC, 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 that heats a desiccant (not shown) placed in the vicinity of the heater (1) to drive out the absorbed moisture and restore its drying function. This desiccant absorbs moisture from the air sent from the air pump 4 to the ozone generator l side.

-ζ is used to 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 represents a power source for this timer control unit 5, and reference numeral 11 represents a water valve that 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 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, which is used to remove residual ozone that is harmful to drinking to below the permissible level. Reference numeral 14 supplies sterilized drinking water to an outside of the diagram by a water pump.

Next - ζ Figure 4 - Here, (1) to (4) respectively indicate the timing at which the ozone generator 1, air pump 4, drying heater 3, and three-way valve 2 are operated by the timer controller 5. At time tO to t2 +ζ, the three-way valve 2 is turned on and opened toward the ozone generator direction za, and the air sent out by the air pump 4I is sent to the drying heater 3 (
During this period, the ozone generator 1 is energized during time tQ, tl (period TON)+c, and is dehumidified by the desiccant in the portion (without electricity) and supplied to the water reservoir 12 via the ozone generator 1. Ozone generation takes place.

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 point 12 to t3, and the desiccant provided in this part is heated and discharges the absorbed moisture, so this moisture is discharged toward the outside air direction 2b. It turns out.

During the next time period 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 1° pump 41 heater 3 is turned off. During this time, the heater temperature changes from high temperature to normal value IC.
return. From time t5, the operation between time tQ- and t5 (one cycle period T1) is repeated again.

By the way, since the timer control unit 5 which conventionally generates ozone repeatedly at fixed time intervals normally starts the operation as shown in FIG. There is one thing to do. In addition, the timer control unit 5 does not perform control as a repeat timer in this way, but on the condition that there is an external input (for example, when a switch is turned on that detects that a certain amount of water has entered the water reservoir). Even in the case where ozone is generated during the input, when the power supply 6 of the control unit 5 is turned on, ozone is immediately generated when there is an external input.

However, in such a system iζ, there may be defects in the piping system (hereinafter referred to as ozone injection piping system) that feeds ozonized air into the water reservoir 12, that is, the air cylinder three-way valve 2 or the pipes connecting these. If these connections are incomplete, if the power supply 6 of the timer control unit 5 is turned on by mistake without knowing this, ozone will be generated immediately and the ozone will leak into the atmosphere. .

As is well known, even a small amount of ozone can cause serious damage to the human body.
Such leaks must be avoided at all costs as they are harmful.

[Purpose of the invention]

The present invention eliminates the above problems and provides the ozone injection piping system.
To provide a control device for an ozone generator that can prevent ozone from leaking to the outside as much as possible even if the power is turned on by mistake without knowing that there is a defect.

[Key points of the invention]

The key point of the present invention is to operate the air pump at least a predetermined time (delay time) before turning on the ozone generator, and to take time to check whether there is a leak in the ozone injection piping system. The problem is that the ozone generator is operated only after a predetermined period of time has elapsed.

In other words, the main point of the present invention is to use ozonized air through an ozone generating means (such as an ozone generator) to supply water, etc. to be sterilized, through an air delivery means (such as an air pump).
In the C injection system, the ozone generating means is provided with means (such as a delay timer) for starting ozone generation at least after a predetermined period of time has elapsed after driving the air sending means. be.

[Embodiments of the invention]

The present invention will be explained in detail below based on FIGS. 1 and 2. FIG. 1 (2) is a diagram showing a circuit configuration as an embodiment of the present invention, FIG. 0 is a time chart for explaining the operation of the same, and FIG.

1(2) and 8, respectively, are a circuit diagram and a time chart as another embodiment of the present invention.

In FIG. 1 (2), TM is a sequential timer, which corresponds to the timer control unit 5# in FIG. Each means 1 to 4 including the generator is driven and controlled. 6 is for example ACI OOV of this control circuit.
It is the power source. Note that TMl opens and closes the air pump 40 circuit and is called an air pump contact. TM2 opens and closes the circuit of the drying heater 3, and is called a drying heater contact. T
M3 opens and closes the circuit of 3-way valve 2 (σ), and is called a 3-way valve contact. TM4 is an ozone generator 1. It opens and closes a circuit consisting of the delay timer TD, the a contact TD1 of the delay timer TD, etc., and is called an ozone generator contact.

8(1) to (ω in FIG. 1) indicate the operation timings of ozone generator 1, air pump contact TM1, drying heater contact TM2, three-way valve contact TM3, and ozone generator contact TM4, respectively.

In this case each of the four contacts TM4. TMI-TM3 performs on and off operations that are the same as the operation timings of FIG. After td, the a contact TDl is closed and the ozone generator l is energized to generate ozone.

In this case, at the time tQ when the contact TM4 is turned on, the air pump 4
If this time tQ coincides with the time when the power supply 6 of the control circuit is turned on, from this time tO, the IC
If the power supply 6 is on, energization starts before time tQ, so check whether there are any defects in the ozone injection piping system that could cause leakage before energizing the ozone generator 1. It is possible to do so.

In addition, in Fig. 2, the TMA shown in the figure ~ is a sequential timer for drying, and ozone is generated by a drying cycle T11 in which the desiccant is dried as shown in Fig. 0 and an external input signal (i.e., turning on the external input contact S). This is a timer that alternately repeats the external input cycle T12 that enables the operation of the device 1.

TMAI to TMA4 in (2) of the same figure are the timers TMA
are repeatedly opened and closed in a predetermined order by the air pumps 4 and 4, respectively. Dry heater 3. 3-way valve 2. and contacts for activating relay S is an external input contact that is closed by an external input signal, and X is a relay that is energized by the contact S and relay enable contacts TMA4 and ζ. Further, Xt and X2 are relay Xσ)a contacts.

In addition, (1) to (6) in FIG. 8+c are ozone generator 1, air pump 4. Dry heater contact TMA2゜3
Way valve contact T MA3. Relay enable contact 'rMA4. The timing of the operation of external input contact S (or relay X) is shown. In the figure ■, the drying cycle 'rtt (times t2 to t5
4. The operations of the drying heater 3 and the three-way valve 2 are the same as those from time t2 to t5 described in FIG. It is left to cool naturally. In addition, since the relay enabling contact TMA4 is turned off in this cycle T11, even if a temporary multi-contact external input signal is input during this cycle, the relay X is not energized, and its a contact
Since it is in the off state, power supply to the ozone generator l is also blocked.

Missing number ζ In external input cycle T12, relay enable contact T
Since MA4 is turned on, when external input contact S is turned on at time +IO, relay X is energized.

In this cycle T12, the drying heater 3 is off and the three-way valve 2 is on (opened in the ozone generator direction 2a). Also, the air pump contact TMAl is off and this contact TMA
The air pump 4 is not driven from the 1 side.

Now, when relay X is energized as described above at time tlo, its a contact X1. When X2 is turned on, the air pumps 4 start operating, and for the ozone generator 1, the delay relay TD is first energized. Then, the delay relay TD closes its a contact TDt after a delay time td, and the lyozone generator 1 starts generating ozone.

Therefore, when there is an external input signal, that is, when the external input contact S closes, the air pump 4 is activated before ozone is generated, so during that period (delay time td), check for leaks in the ozone injection piping system. It can be carried out.

〔Effect of the invention〕

As is clear from the above description, according to the present invention, the air pump is activated at least a predetermined time (delay time) before energizing the ozone generator in an ozone sterilization system for drinking water, etc. Therefore, it is possible to check for air leakage in the ozone injection piping system within this predetermined time, and to prevent erroneous ozone leakage to the outside.

[Brief explanation of the drawing]

Figures 1 and 6) are circuit configuration diagrams and time charts for explaining the operation of an embodiment of the present invention. @2 Figures 2 and 3 are circuit configuration diagrams and time charts explaining their operations as other embodiments of the present invention, Figure 3 is a diagram showing an overview of the configuration of a drinking water ozone sterilization system, and Figure 4 is a diagram showing an overview of the configuration of a drinking water ozone sterilization system.
The figure is a time chart illustrating the conventional operation of the main part of FIG. 3. l Niosin generator, 2: 3-way valve, 3: drying heater, 4:
Air pump% 5: Timer control unit, 6: Power supply, 12: Water reservoir, TM: Sequential timer, TMA: Drying sequential timer, TD: Delay timer, TDI:
A contact, td: delay time. (A) Figure 1 (A) Tusk Figure 2

Claims (1)

[Claims] 1) A system for injecting ozonized air through an ozone generating means into water, etc. to be sterilized through an air sending means, comprising: driving at least the air sending means; A control device for an ozone generator, comprising means for causing the ozone generating means to start generating ozone after a predetermined period of time or more has elapsed.