JPH0417153Y2 - - Google Patents

Description

[Detailed description of the invention] [Industrial application field] The present invention is a deodorizer that deodorizes air by converting oxygen into ozone in air containing odor components, which is provided in a storage room such as a refrigerator. It concerns the safety circuit of the device.

[Prior Art] Conventionally, deodorizing equipment equipped with an ozone generator has been equipped with a high-voltage generator that applies high voltage to the ozone generator and an electric blower in order to prevent ozone concentration from increasing due to long-term continuous operation. were connected in parallel, and a switch for driving a high-voltage generator and a switch for driving an electric blower were inserted into each of these parallel circuits, and the switches were controlled to be turned on and off at regular intervals by a timer.

[Problem that the invention attempts to solve]

However, in the case of the structure described above, the high-pressure generator and its drive switch, and the electric blower and its drive switch are connected in parallel, so the drive switch on the high-pressure generator side may malfunction for some reason. If the ozone generator is welded or the relay driver transistor is shot, there is a drawback that the ozone generator will be continuously energized, or if an abnormality occurs in the circuit on the electric blower side, the electric blower will not be driven. There was a drawback that even if the ozone generator ran out, only the ozone generator would operate and ozone would leak into the refrigerator.

The present invention has been made in view of the above-mentioned matters, and is designed so that the energizing circuit of the high voltage generator is not configured unless the electric circuit on the electric blower side becomes operational.

[Means for solving problems]

In order to achieve the above object, this invention disposes an electric blower, an ozone generator and a deodorizing catalyst in the air flow passage, and also includes a high voltage generator and a timer for applying a high voltage to the ozone generator, In the deodorizing device in which the electric blower and the high pressure generator are controlled on/off at regular intervals by the timer, the relay switch of the first relay and the high pressure generator are controlled on/off by the timer. A series circuit is formed by connecting this series circuit and the electric blower in parallel to form a parallel circuit, and a second relay is connected in series with the parallel circuit to be on/off controlled by the timer. A relay switch is connected to simultaneously control on/off of the first relay and the second relay so that the high voltage generator is not energized unless the electric blower is driven.

[Effect]

According to the present invention, even if an abnormality occurs in the electrical system on the high-pressure generator side, ozone will not be generated from the ozone generator unless the electric blower is driven, so it is extremely safe.

〔Example〕

Reference numeral 1 denotes a wall of a storage room such as a refrigerator, and a wall 3 forming an air flow passage 2 is provided inside the wall.
In the air flow passage 2, there is an ozone generator 5 that generates ozone in response to a high voltage from a high pressure generator 4;
A deodorizing catalyst 6 that promotes the oxidative decomposition of ozone and malodorous components and decomposes excess ozone into oxygen, and an electric blower 7 that forcefully circulates the air inside the refrigerator are disposed.

The high voltage generator 4 that applies high voltage to the ozone generator 5 and the electric blower 7 are configured to be turned on and off at regular intervals by a timer 8.
That is, there are a first relay 9 and a second relay 10 that are energized by the on signal from the timer 8, while the high voltage generator 4 has a first relay that is turned on and off by the first relay 9. A switch 11 is connected, and the electric blower 7 is connected in parallel to the series circuit of the high voltage generator 4 and the first relay switch 11.

Reference numeral 12 denotes a second relay switch which is turned on and off by the second relay 10, and is composed of a series circuit consisting of the high pressure generator 4 and the first relay switch 11, and the electric blower 7. connected in series to a parallel circuit.

Note that 13 and 14 are transistors for energizing the first relay 9 and the second relay 10, and 15 and 16
is resistance.

Therefore, when the timer 8 intermittently issues an ON signal, the first relay 9 and the second relay 10 operate, and the first and second relay switches 11, 1
2 is turned on, and the high pressure generator 4 and electric blower 7 are energized.

Then, ozone is generated from the ozone generator 5,
The malodorous components passing through the air flow path 2 are oxidized and decomposed. The deodorizing catalyst 6 not only promotes the oxidative decomposition reaction but also decomposes excess ozone and returns it to oxygen.

The above is the operation during normal operation, and the switch is turned on and off repeatedly at regular intervals.

Now, even if the first relay switch 11 were to malfunction and remain in the always-on state, the high-voltage generator 4 would not be energized unless the second relay switch 12 is turned on, that is, unless the electric blower 7 is driven. , no ozone is generated from the ozone generator 5. Incidentally, if ozone is generated while the electric blower 7 is stopped, the ozone will flow into the refrigerator from the opening in the air flow path where the deodorizing catalyst is not disposed, which is very dangerous.

Furthermore, if the second relay switch 12 fails and does not turn on due to some reason, the electric blower 7 will not be driven, and the high-pressure generator 4 will not be energized, and ozone will not be generated from the ozone generator 5. .

〔effect〕

Since the present invention is constructed as described above, it is possible to prevent the continuous generation of ozone due to faulty relay switch contacts, etc., and it is possible to provide an extremely safe deodorizing device.

[Brief explanation of drawings]

FIG. 1 shows an electrical circuit diagram of the main parts of the deodorizing device of the present invention, and FIG. 2 shows a schematic diagram of the main parts of the deodorizing device. 2...Air flow path, 4...High pressure generator, 5...
... Ozone generator, 6 ... Deodorizing catalyst, 7 ... Electric blower, 8 ... Timer, 11, 12 ... Relay switch.

Claims (1)

[Scope of Claim for Utility Model Registration] An electric blower, an ozone generator, and a deodorizing catalyst are disposed in the airflow passage, and a high-voltage generator and a timer are provided to apply a high voltage to the ozone generator, and the timer is activated by the timer. In a deodorizing device in which the electric blower and the high-pressure generator are controlled on/off at regular intervals, the high-pressure generator is connected in series with the relay switch of the first relay, which is controlled on/off by the timer. A circuit is formed by connecting this series circuit and the electric blower in parallel to form a parallel circuit, and a relay switch of a second relay controlled on/off by the timer is connected in series with the parallel circuit. safety of the deodorizing device, characterized in that the first relay and the second relay are connected to each other, and the first relay and the second relay are simultaneously controlled on/off so that the high-pressure generator is not energized unless the electric blower is driven. circuit.