JPH0777962B2 - Ozonizer - Google Patents

Description

TECHNICAL FIELD The present invention relates to an ozone generator (hereinafter referred to as an ozonizer), and more specifically, an ozonizer capable of easily adjusting ozone production amount and ozone concentration in a target space. Regarding

[Prior Art] Conventionally, there has been known an ozonizer that performs deodorization and sterilization by using ozone generated in the air by air discharge or creeping discharge.

This ozonizer has a blow-off type and a suction type. The former blows ozone into the target space to directly deodorize or sterilize the target space. The latter sucks air from the target space into the ozonizer to deodorize or sterilize it, then reduces the ozone remaining in the deodorized or sterilized air, and returns the residual ozone to the low ozone concentration air to the target space. is doing.

In the former blowing type, deodorization or sterilization of the target space can be efficiently performed, and in the latter, the air in which the residual ozone has been reduced is returned to the target space, so that the ozone concentration in the target space can be made low.

[Problems to be Solved by the Invention] However, although the blow-out type ozonizer can deodorize or sterilize the target space at high speed, the ozone concentration in the target space increases with the lapse of operating time, and the strong oxidative power of ozone causes damage to the human body and articles. There are problems that harmful effects occur and unpleasant ozone odor occurs.

In addition, although the suction type ozonizer can maintain the ozone concentration in the target space low, it only deodorizes and sterilizes the odor and sterilization of the sucked air at a constant efficiency, which causes a problem that the time required for deodorizing or sterilizing the target space becomes long. It was In addition, there is a limit to the deodorization of adhered odor.

Of course, if the size of the suction type ozonizer is increased, the deodorization or sterilization time can be shortened, but the size of the device is increased and the power consumption is increased.

The present invention has been made in view of such problems, and an object thereof is to provide an ozonizer that can easily adjust the ozone production amount and the ozone concentration in the target space as needed.

[Means for Solving the Problems] An ozonizer according to the present invention includes a case having an air inlet and an air outlet, and a discharge device including a pair of electrodes provided inside the case and facing each other with a predetermined gap therebetween. A reducing device installed in the case for reducing ozone in the air, and an air installed in the case and taken in from the air inlet are sent to the air outlet through the discharge device and then the reducing device. It has an ozonizer having a blower device and a control device for controlling the blower device, and the control device comprises blower direction switching means for reversing the blow direction of the blower device by receiving a predetermined operation mode switching signal. It is characterized by

[Operation] In the ozonizer of the present invention, the blower direction switching means of the control unit causes the blower device to rotate normally or reversely upon receipt of the operation mode switching signal.

When rotating the blower normally, the ozonizer is operated in the suction operation mode. That is, the air blower blows the air sucked from the air intake into the target space from the air outlet through the discharge device and then the reducing device. The discharge device produces ozone to deodorize or sterilize the air. The reducing device reduces most of the ozone remaining in the deodorized or sterilized air.

On the other hand, when reversing the air blower, the ozonizer is operated in the blowing operation mode. That is, the air blower blows out the air sucked from the air outlet from the air inlet to the target space via the reducing device and then the discharging device.

Therefore, when the blower is rotated in the normal direction, the ozone concentration of the air sent from the ozonizer is low and the target space is deodorized or sterilized relatively slowly. When the air blower is reversed, the ozone concentration of the air sent from the ozonizer is high and the target space is deodorized or sterilized at high speed.

[Embodiment] Embodiment 1 An embodiment of the ozonizer of the present invention will be described with reference to the block diagram of FIG.

This ozonizer comprises a main unit 1, a control unit 2 for the main unit 1, an AC high-voltage power supply unit 3, and a motor drive circuit 4.

The main body device 1 has a case 10 having an air intake 11 and an air outlet 12, and inside the case 10, a blower 20, a discharge device 30, and a reduction device 40 are arranged. Air intake 11
The air outlets 12 are provided on the opposite side walls of the case 10 opposite to each other. The air blower 20 arranged near the air intake 11 of the case 10 is driven by the motor M to generate an air flow flowing from the air intake 11 to the air exhaust 12. The discharge device 30 arranged in the central portion of the case 10 is composed of a pair of needle-shaped electrodes 31 and a flat plate electrode 32 that face each other with a predetermined interval. The reducing device 40 arranged near the air outlet 12 of the case 10 is a box body having openings at both ends filled with activated carbon. It is opened on the 30 side.

The control device 2 is composed of a microcomputer device and processes various input signals to control the motor drive circuit 4 and the AC high-voltage power supply unit 3. The AC high-voltage power supply unit 3 is a circuit device that synthesizes an AC high voltage for discharging, but it is well known, and therefore its explanation is omitted. The motor drive circuit 4 is a circuit device for controlling the driving / stopping and rotation direction of the motor M, but it is also well known and its explanation is omitted.

Next, the operation of this ozonizer will be described with reference to the flowchart of FIG.

When the controller 2 is turned on, the routine starts,
Wait until the driving signal for driving the ozonizer is input (S100). If the operation signal is input, the AC high voltage power supply unit 3
To discharge ozone to generate ozone (S10
2) Instruct the motor drive circuit 4 to rotate the motor M in the reverse rotation state (S104) and start a timer (not shown) built in the CPU (S106).

Next, it is checked whether or not the operation mode switching signal is input (S108), and if the operation mode switching signal is input, S112
And the motor M is switched to the normal rotation state. If the operation mode switching signal is not input, it waits for the time set by the condition until the timer ends (S110), and when it ends, the motor M is switched to the normal rotation state.

When the motor M is rotated in the reverse direction, the blower 20 takes in air from the target space through the air outlet 12. The taken-in air is deodorized or sterilized by the discharge device 30 via the reduction device 40 and is sent out from the air intake 11 to the target space together with the residual ozone.

During normal rotation of the motor M, the blower device 20 takes in air from the target space through the air intake 11. The taken-in air is deodorized or sterilized by the discharge device 30, and the deodorized or sterilized air is reduced by the reducing device 40 to remove residual ozone, and then sent out from the air outlet 12 to the target space.

Therefore, the ozonizer is operated in the blow-out operation mode for a predetermined time after the operation signal is input to the control device 2, and then in the suction operation mode. By doing this, deodorization or sterilization can be performed at high speed in the early stage of operation when odors and bacteria have accumulated to a high level, and the odor concentration and bacterial density have become low levels due to the operation of the ozonizer. After that, the ozone concentration in the target space can be maintained at a low level.

Further, when any operation mode switching signal is input, it is possible to immediately switch to the suction operation mode. For example, when the worker works in the food refrigerator, the operation mode switching signal is input to operate the ozonizer in the suction operation mode in advance to reduce the ozone concentration inside the food refrigerator.

In this embodiment, since the operation mode is switched by changing the rotation direction of the motor, the device structure can be extremely simplified.

It should be noted that the operating mode can be appropriately switched when it is necessary to switch the deodorizing or sterilizing ability even at a stage other than the initial stage of operation.

In addition, in this embodiment, when the operation in the suction operation mode is unnecessary, the life of the reduction device can be extended by operating in the blowout operation mode.

Embodiment 2 The ozonizer of this embodiment has almost the same device configuration as that of the embodiment 1 shown in FIG. 1, except that an odor signal is input to the control device of this embodiment and that the control device is the third embodiment. The point that the program in the figure is executed is different from the control device 2 of the first embodiment.

When the power supply voltage is input to the control device of the ozonizer, the routine shown in FIG. 3 is started and waits until an operation signal for driving the ozonizer is input. When the operation signal is input, the AC high-voltage power supply unit 3 is instructed to operate the discharge device 30 to generate ozone (S202), and then it is checked whether or not the operation mode switching signal is input (S204). If the operation mode switching signal is input, the process proceeds to S210 to instruct the motor drive circuit 4 to rotate the blower device 20 in the normal direction, and the ozonizer is forcibly operated in the suction operation mode.

If the operation mode switching signal is not input (S20
4) Take in an odor signal from an odor sensor (not shown) (S206). However, this odor signal is output from a semiconductor hydrogen sulfide sensor (not shown) provided inside a food refrigerator (not shown) as a target space.

Next, it is checked whether the odor level in the target space is low (S2
08), if it is low, execute the suction operation mode described above (S2
10) If not, the blower 20 is reversed and the ozonizer is operated in the blowing operation mode (S212).

After determining the rotation direction of the blower device 20 (S208, S210), it is checked whether the odor level in the target space is very low (S21
4), if it is very low, discharge device 30 and blower device 20
Is stopped (S216). On the other hand, if the odor level in the target space is not very low, the process returns to S204 and the above routine is performed again.

According to this embodiment, since the operation of the ozonizer and the ozone production amount are controlled according to the odor level of the target space,
There is an advantage that ozone can be effectively used.

EFFECT OF THE INVENTION Since the ozonizer of the present invention controls the ozone production amount and the ozone concentration in the target space by the forward and reverse rotation of the blower, it is possible to provide the ozone production amount variable type ozonizer having a simple device configuration. .

Further, it is possible to provide an operation mode switching type ozonizer, and it is possible to switch the operation mode appropriately according to the application.

[Brief description of drawings]

FIG. 1 is a block diagram showing an embodiment of the ozonizer of the present invention, and FIGS. 2 and 3 are flowcharts showing the operation of the ozonizer of FIG. 1, respectively. 2 ... Control device 20 ... Blower device 30 ... Discharge device 40 ... Reduction device

Claims (1)

[Claims] 1. A case having an air inlet and an air outlet, a discharge device provided in the case and comprising a pair of electrodes facing each other at a predetermined interval, and ozone in the air provided in the case. And a blower device for sending air taken in from the air inlet provided in the case to the air outlet through the discharge device and then the reducer, and controlling the blower device. An ozonizer, comprising: a control device, wherein the control device includes a blowing direction switching unit that reverses a blowing direction of the blowing device when a predetermined operation mode switching signal is received.