JPS6024351Y2 - Closed room interior deodorizer - Google Patents

Description

[Detailed explanation of the invention] This invention is suitable for refrigerators, closed rooms, washrooms in buildings,
This equipment is installed in a closed room such as a hospital room where there is usually no or poor air flow, and is used to deodorize animal and plant odors in the room. This paper relates to improvements that utilize ozone's oxidative decomposition and neutralization of malodorous substances.

Since ozone has an excellent deodorizing effect on many organic and inorganic odorous substances of animal and vegetable origin, ozone has traditionally been used to remove bad odors from the air where these odorous substances are mixed. It's being used.

As this ozone deodorizing device, there are devices that generate ozone using an ozone generator and radiate it to a source of bad odor using piping, and large-scale devices for use in factories.

However, all of these devices are large-scale devices and are not compactly packaged, so you can easily deodorize the room by installing the device in any closed room you want to deodorize. That's not the case.

This invention eliminates the above-mentioned disadvantages of conventional ozone deodorizers, improves the conventional plate type ozone generator, and creates a smaller plate type ozone generator by further increasing the ozone generation efficiency. By adopting a compact high voltage generating circuit device that generates the high voltage applied to the plate from a commercial AC power source, the size can be significantly reduced, and a space equivalent to the reaction chamber where deodorizing action is performed inside the container and a space for removing residual ozone. The aim is to provide an ozone deodorizer that can be installed indoors in home refrigerators equipped with a decomposition chamber. A plate type ozone generator that generates ozone by applying an alternating current voltage of 2500 V to 20000 V between the two electrode plates, and a mesh container containing an ozone decomposition reaction material with a large specific surface area are sequentially arranged. In addition, a gas introduction opening is provided at a position adjacent to the suction fan, and a gas discharge opening is provided at a position conductive to the mesh container, and the high pressure applied between the electrode plates is generated from a commercial AC power source. This is a sealed indoor deodorizer in which a high voltage generating circuit device is added to the mesh container through a partition wall.

Next, the sealed room internal deodorizer according to this invention will be described in detail with reference to the drawings.

Figure 1 is a schematic explanatory diagram showing the internal structure of this deodorizer, Figure 2
The figure is a plan view of the ozone generator, and FIG. 3 is a sectional view of the I-1 section taken in the direction of the arrow.

In the figure, 1 is a housing made of corrosion-resistant material such as a plastic plate, and a gas introduction opening 3 to which a stainless steel dustproof net 2 is attached is provided at the top, into which gas, i.e., malodorous substances, is introduced from the outside. An electric suction fan 4 is attached to introduce the mixed air in the sealed room into the housing 1.

Reference numeral 5 indicates a plate type ozone generator, and in this embodiment, two sets are installed.

6 is a deodorizing reaction space where ozone generated by the ozone generator 5 acts to oxidize and decompose and neutralize the introduced air containing malodorous substances; 7 is a stainless steel mesh container provided in the housing 1; A reactive material with a large specific surface area that reacts with residual ozone and decomposes it into oxygen, such as wool-like thin wires of pure iron, is inserted into the recess with many small holes in the side wall. 8 is filled.

9 is a louver attached to an opening for discharging deodorized air.

A high voltage generating circuit device 11 is housed in a lower chamber of the casing 1 partitioned by a partition wall 10 .

This deodorizer is constructed as described above,
A few additional comments will be made regarding the main parts of the plate type ozone generator 5 and the high voltage generating circuit device 11.

The electrode plate 5-1 is formed by vacuum-depositing pure copper in the form of a foil onto the surface of a reinforced plastic insulating substrate 5-2 made of epoxy resin with glass fibers evenly dispersed therein.

The electrode plate 5-1 is provided with a reinforced plastic insulating substrate 5-2 that penetrates the electrode plate 5-1 so that the gas introduced by the electric suction fan 4 from the gas introduction opening 3 is quickly and evenly distributed and contacted with the electrode plate 5-1. A large number of small holes are drilled at a constant pitch horizontally and vertically.

Reference numeral 5-3 denotes a dielectric plate made of a synthetic resin material such as commercially available Mylar having a uniform structure with a low dielectric constant and a constant thickness of about 0.1 m, and counter electrode plates 5 are provided on both sides of the dielectric plate.
-1 is tightened with insulating through bolts 5-4 through insulating thin plate spacers at the four corners, and fixed with an extremely narrow gap (about 0.05 mm), and the high voltage cord 5-5 .5-6 are connected to the upper and lower electrode plates 5-1, respectively.

Fig. 4 shows an example of the circuit of the high voltage generating circuit device 11 incorporated in this deodorizer, in which each element such as a thyristor and a diode is arranged on an insulating substrate and connected by printed wiring between them. be.

Terminals A and D are connected to the commercial AC 100V power supply, and high voltage side terminal E is connected to the commercial AC 100V power supply.
, F is the high voltage cord 5-5.5 of the plate type ozone generator 5
-6 respectively, and terminal E is grounded.

When terminals C and D are short-circuited, terminals E and F
Since a voltage of up to 20,000V will be generated between them, in order to prevent short circuits between wires or electronic components, they should be separated from each other with a gap of about 3 orrrIn, and the entire circuit device, excluding the terminals, should be Both the substrate and the substrate are made of epoxy resin material.

Because this step-up device is constructed in this way, it is much more compact than a conventional one based on a winding transformer, and it occupies less space than a conventional one. It is set to 10 or less.

Next, the operation of this deodorizer will be described in the case where it is installed inside a large household electric refrigerator for deodorizing it.

A cord from a 100V power source is introduced into the refrigerator through the rubber cushion sealing part of the door, and connected to terminals A and D of the high voltage generator 11.

When the electric suction fan 4 rotates, air containing odorous substances generated from each electric and vegetable food stored in the refrigerator is sucked into the housing 1 from the upper opening 3 through the dustproof screen 2. Ru.

On the other hand, the high voltage reaching a maximum of 20,000 V generated by the high voltage generating circuit device 11 is generated by the high voltage cord 5-5.
5-6, it is applied to the upper and lower electrode plates 5-1.

The electrode plate 5-1 is vertically opposed to a dielectric plate 5-3 of a constant thickness made of Mylar, which is a homogeneous dielectric material, with an extremely narrow gap between the electrode plates 5-1 and 5-3. , because a high frequency and high voltage is applied through this dielectric material with a low permittivity, a silent discharge accompanied by a faint light beam is generated in the upper and lower regions without becoming a glow discharge or an arc discharge. It is carried out in a stable state by continuing quietly into the void.

Since the electrode plate 5-1 is deposited on an epoxy resin substrate 5-2 reinforced with glass fiber, it will not bend or warp due to the influence of temperature or humidity, and the Mylar dielectric plate 5-1 3 has uniform thickness and homogeneity, unlike the thin natural mica plates used in conventional devices of this type, so the silent discharge is more stable than conventional ones,
And it is done evenly and uniformly over the entire surface.

Now, the air containing odorous substances sucked into the casing 1 described above is introduced into the electrode plate 5-1 through a large number of small holes drilled in the epoxy resin substrate 5-2 and the electrode plate 5-1. The oxygen contained in the air undergoes a chemical reaction, efficiently converting it into ozone.

The concentration of this generated ozone is determined by the equilibrium concentration corresponding to various conditions such as the pressure, temperature, and humidity of the air inside the refrigerator; the shape, size, distance between electrodes, and condition of the electrode plate surface; and the applied frequency and waveform. Ozone production continues until the

In this ozone generator 5, no particular temperature rise occurs, and the substrate 5-2 is kept at room temperature and does not require cooling.

In this way, a part of the oxygen contained in the sucked air is converted into ozone by electrical energy, and this conversion is mainly performed at the outer periphery of the electrode plate 5-1 and the periphery of the numerous small holes.

In the reaction space 6 below the ozone generator 5, this ozone acts on organic or inorganic odorous substances contained in the suction air, oxidizing them and having a masking effect, especially unsaturated organic compounds, Effectively deodorizes foul-smelling substances such as hydrogen sulfide, mercaptans, and amines.

The air from which the bad odor has been removed is further passed through wool-like fine wires 8 of pure iron filled in the net container 7, passes through the louvers 9, and is discharged from the casing 1 into the room.

During this period, a considerable amount of ozone is generated in reaction with odorous substances such as Co1. However, the remaining ozone is subsequently treated by contacting it with pure iron.

Here, a reaction such as Fe1203→2Fe02+02 takes place, and the remaining ozone is returned to oxygen and released into the room.

When the amount of odor substances generated in the refrigerator is small, the amount of ozone remaining will naturally increase and the deterioration of the reaction material 8 will be accelerated, but it is usually sufficient to replace the reaction material 8 once every part. It is.

As this reaction material, an appropriate solid catalyst may be used in addition to pure iron.

In addition, the high voltage generating circuit device 11 incorporated in this deodorizer is entirely molded with epoxy resin, and is installed inside the casing 1 apart from the partition wall 10, so moisture, generated ozone, etc. It is completely unaffected by heat, there is no risk of failure, and it generates only a small amount of heat, so it does not require cooling.

As is clear from the above explanation, the sealed room internal deodorizer according to this invention can be used outside the above-mentioned household refrigerator.
Large commercial refrigerators, closed rooms such as washrooms in buildings,
By installing it inside a room where there is no or poor air flow, such as a hospital room, it effectively deodorizes animal and plant odors contained in the air in the room, and converts all ozone remaining during deodorization into oxygen. A trowel that can be decontaminated, detoxified, and discharged indoors can be produced, requiring almost no maintenance effort, and can maintain an excellent deodorizing effect for a long period of time.

In addition, this deodorizer is equipped with a plate-type ozone generator that occupies a much smaller volume than the discharge tube-type ozone generator in conventional deodorizers of this type, and the discharge electrode plate of the generator has a high High-voltage generators that apply voltage have been thoroughly miniaturized, so especially in small-capacity devices, deodorizers filled with a deodorizer based on granular activated carbon, which is conventionally used in home refrigerators, are becoming more compact. Instead, it can be used as something with better deodorizing effects.

[Brief explanation of the drawing]

Fig. 1 is a schematic explanatory diagram showing the internal structure of the sealed room internal deodorizer according to this invention, Fig. 2 is a plan view of the ozone generator, and Fig. 3 is a cross-sectional view of the ■-■ section taken in the direction of the arrow. , FIG. 4 is a circuit diagram of a high voltage generating circuit device incorporated in this deodorizer. 1... Housing, 2... Dustproof net, 3...
...Opening for gas introduction, 4...Electric suction fan, 5...Ozone generator, 5-1...Foil electrode plate, 5-2...・Reinforced plastic insulation board,
5-3...Dielectric plate, 5-4...Insulation through bolt, 5-5.5-6...High voltage cord,
6... Deodorizing reaction space, 7... Net container, 8... Reaction material, 9... Discharge opening (louver), 11... ...High voltage generation circuit device.

Claims (1)

[Scope of utility model registration request] Inside the housing, there is an electric suction fan, a dielectric plate is sandwiched between them, and metal electrode plates are arranged facing each other, and a voltage of 2500V to 200V is applied between the two electrode plates.
A plate type ozone generator that generates ozone by applying an alternating current voltage of 00V and a mesh container containing an ozone decomposition reaction material with a large specific surface area are sequentially installed,
A gas introduction opening is provided at a position adjacent to the suction fan;
A gas discharge opening is provided at each of the positions that are electrically connected to the mesh container, and a high voltage generating circuit device that generates a voltage to be applied between the electrode plates from a commercial AC power source is separated from the mesh container by a partition wall. A sealed room internal deodorizer with additional features.