JPH0310775Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Technical Field] The present invention relates to a deodorizing device used in food storages and the like.

[Prior Art] In general, when food is stored in a refrigerator, various odors are emitted from the food, making people feel humble when opening the refrigerator door, and odors from other foods transfer to the stored food, causing the flavor of the food to change. It has some disadvantages that may damage it.

Conventionally, activated carbon was placed inside the refrigerator and its adsorption properties were used to remove odors from inside the refrigerator.However, although this type of carbon has an excellent initial deodorizing effect, it rapidly deteriorates after that. When the adsorption amount of activated carbon reaches saturation, the effect disappears.

Furthermore, the activated carbon has the disadvantage that it is difficult to determine whether the saturated adsorption amount has been reached or not, and the activated carbon must be replaced periodically.

In view of the above-mentioned matters, deodorizing devices have recently been considered that apply a high voltage between a high voltage electrode and a low voltage electrode to generate ozone and remove malodorous components with the ozone.

The following explanation will be given based on FIG. 3: 1 is a case, 2 is an air supply hole, 3 is an exhaust hole, 4 is a high pressure generator, 5 is an ozone generator consisting of a high voltage electrode 6 and a low voltage electrode 7, 8 is an ozone reaction A tank 9 is an ozone decomposition filter, and 10 is an electric blower. When the electric blower 10 and the high-pressure generator 4 are energized, ozone is generated from the ozone generator 5, and ozone is generated together with the air containing malodorous components that has flowed in from the air supply hole 2. It flows into the reaction tank 8, where the malodorous components are decomposed and sent out through the exhaust hole 3.

By the way, in the deodorizing device having the above structure, an ozone generator 5 having a high voltage electrode 6 and a low voltage electrode 7 is installed before the reaction tank 8, and the structure is such that a metal piece etc. can be inserted through the air supply hole 2. It is extremely dangerous, and because the residence time of the malodorous components in the ozone reaction tank 8 is short, the reaction time between the malodorous components and ozone is short, and the malodorous components cannot be fully decomposed, resulting in a poor deodorizing effect. There was a drawback that it was bad.

[Purpose] In view of the above drawbacks, this invention installs both high-pressure and low-pressure electrodes in the ozone reaction tank, provides a partition plate to separate the machine room and the ozone reaction tank, and attaches an ozone decomposition filter to the exhaust hole. By this,
This is intended to improve safety by making it difficult to touch both electrodes from the outside, and by making the reaction tank sufficiently large, the reaction time between malodorous components and ozone is lengthened, thereby improving the deodorizing effect.

[Embodiment] Reference numeral 11 denotes a case made of a hollow box body, and a partition plate 13 with an opening 12 formed therein is provided inside the case 11, and the inside of the case 11 is divided into two chambers, a front chamber and a rear chamber. And the room behind that is an electric blower 14,
There is a machine room 17 in which a high voltage generator 15, an overcurrent fuse 16, etc. are installed, and the front room is an ozone reaction tank 21 in which an ozone generator 20 consisting of a low voltage electrode 18 and a high voltage electrode 19 is installed. The ozone generator 20 is connected to a high voltage generator 15 via a high voltage lead wire 22 and a low voltage lead wire 23, and the high voltage electrode 19 and the low voltage electrode 18 are connected to each other by applying a high voltage from the high voltage generator 15. A silent discharge occurs between the two, producing ozone.

24, 24... are air supply holes formed in the peripheral side wall of the case 11 forming the machine room 17, and outside air is sucked in by the drive of the electric blower 14, and is passed through the opening 12 of the partition plate 13 to the ozone reaction tank 21.
is supplied to

25 is a case 11 forming an ozone reaction tank 21
an exhaust port formed on one side of the exhaust port 2;
An ozone decomposition filter 26 for oxidizing and removing residual ozone from the ozone reaction tank 21 is attached to the fifth section. The ozone decomposition filter 26
has a honeycomb structure made of carbon material, and by passing ozone through this, oxygen and carbon dioxide (2C +
Decomposes into 2O ₃ →O ₂ +2CO ₂ ).

Note that 27 is a fixing plate for fixing the electric blower 14, 28 is a power cord having a plug 29, and 30 is a support piece for supporting the ozone decomposition filter 26.

The operation will be briefly explained below with reference to FIG.
First, when the electric blower 14 is energized and a high voltage from the high voltage generator 15 is applied to the ozone generator 20, the air supply hole 2 formed in the side wall of the case 11 opens.
4, 24... into the machine room 17 of the case 11, and the high voltage electrode 19 and the low voltage electrode 1
8, a silent discharge occurs between the two, and ozone is generated.

The outside air sucked into the machine room 17 passes through the opening 12 of the partition plate 13 into the ozone reaction tank 2.
1, malodorous components contained in the outside air are decomposed by ozone, and unreacted ozone is oxidized and removed by an ozone decomposition filter 26, and is discharged to the outside from an exhaust port 25.

According to the present invention, the ozone generator 2 has a high voltage electrode 19 and a low voltage electrode 18 in the ozone reaction tank 21.
0 is installed, and a partition plate 13 is provided to partition the machine room 17 and the ozone reaction tank 21, and an ozone decomposition filter 26 is installed in the exhaust hole 25, so that both high pressure and low pressure electrodes 19, 18 are Hard to touch, improving safety. In addition, by making the reaction tank sufficiently large, the reaction time between malodorous components and ozone can be lengthened, and the deodorizing effect can also be improved.

Figure 2 is an electrical circuit diagram of the deodorizing device of the present invention.
31 is an overcurrent melting fuse 16 and an electric blower 1
A switch 32 connected in series to the electric blower 14 is a thyristor connected in parallel to the electric blower 14, with a resistor 33 connected to its anode side and a diode 34 connected to its cathode side.

35 is a capacitor connected to the gate terminal of the thyristor 32, and 36 and 37 are resistors.

38 is connected in parallel to the thyristor 32
1 condenser, high voltage transformer 39
The series circuit of the capacitor 38 and the primary coil 39a of the high voltage transformer 39 is connected in parallel to the secondary coil 39a.
0 is connected.

Therefore, if the switch 31 is turned on now, the capacitor 38 will be charged via the resistor 33 and the diode 34 during the positive half cycle of the sine wave voltage, and the capacitor 35 will be charged via the resistor 36 during the next negative half cycle. Ru.

When the capacitor 35 is charged and reaches the switching voltage of the thyristor 32, a gate voltage is applied from the gate terminal of the thyristor 32, and the thyristor 32 is rendered conductive.

By energizing the thyristor 32, the charging voltage of the capacitor 38 is discharged, and the high voltage transformer 39
A current flows through the primary coil 39a, and a pulse-like high voltage is generated in the secondary coil 39b.
Ozone is generated from the ozone generator 20 by this high voltage, and the ozone performs the deodorizing action as described above.

[Effects] The present invention includes an electric blower, an ozone generator that generates ozone by silent discharge, and a high-voltage generator that supplies high voltage to the ozone generator, in a case.
In a deodorizing device equipped with an ozone decomposition filter that decomposes unreacted ozone, the inside of the case is divided into two rooms by a partition plate, one of which is a machine room in which an electric blower and a high-pressure generator are installed. The other room is an ozone reaction tank equipped with an ozone generator, and an intake hole is provided on the side wall of the case that makes up the machine room, and an exhaust hole is provided on the side wall that makes up the ozone reaction tank. Since the plate has an opening formed to take air from the intake hole of the electric blower into the ozone reaction tank, the ozone reaction tank can be made sufficiently large and the reaction time between malodorous components and ozone can be extended. This not only improves the deodorizing effect, but also makes it difficult to touch both the high-voltage and low-voltage electrodes from the outside, making it possible to obtain an extremely safe deodorizing device.

[Brief explanation of the drawing]

FIG. 1 is a schematic diagram of the structure of the deodorizing device of the present invention, FIG. 2 is an electric circuit diagram of the deodorizing device of the present invention, and FIG. 3 is a schematic diagram of the structure of the conventional deodorizing device. 11: Case, 12: Opening, 13: Partition plate, 1
4: Electric blower, 17: Machine room, 18: Low voltage electrode, 19: High voltage electrode, 20: Ozone generator, 2
1: Ozone reaction tank, 24, 24... air supply hole, 2
5: Exhaust port, 26: Ozone decomposition filter.

Claims (1)

[Scope of claim for utility model registration] Inside the case, there is an electric blower, an ozone generator that generates ozone by silent discharge, a high-voltage generator that supplies high voltage to the ozone generator, and a device that decomposes unreacted ozone. In a deodorizing device equipped with an ozone decomposition filter, the inside of the case is divided into two chambers with a partition plate,
One of the rooms is a machine room where an electric blower and a high-pressure generator are installed, and the other room is an ozone reaction tank equipped with an ozone generator.The side wall of the case that makes up the machine room is equipped with intake holes and A deodorizing device characterized in that an exhaust hole is provided in the side wall constituting the ozone reaction tank, and an opening is formed in the partition plate for introducing air from the intake hole by an electric blower into the ozone reaction tank.