KR101632158B1 - Sterilizer for vehicle or room with plasma - Google Patents

Abstract

The present invention is to provide a plasma sterilizer capable of sterilizing the entire space inside an ambulance or a wall. The present invention provides a sterilizer module comprising: a dielectric barrier discharge plasma source; a fan to apply a propulsion force to a plasma flow discharged from the plasma source; and a UV lamp and an activated carbon arranged in a flow path through which the plasma flows out. The plasma source provides the sterilizer module having a first substrate and a second substrate arranged in parallel to face one another, wherein the first substrate comprises: a fork-shaped first electrode; a dielectric material covering the first electrode; and an aluminum oxide formed on the top of the dielectric material to protect the dielectric material and prevent moisturization of the dielectric material. The second substrate comprises: a fork-shaped second electrode; a dielectric material covering the first electrode; and an aluminum oxide formed on the top of the dielectric material to protect the dielectric material and prevent moisturization of the dielectric material.

Description

TECHNICAL FIELD [0001] The present invention relates to a plasma sterilizer,

The present invention relates to a sterilizer for sterilizing a vehicle or a room by generating a plasma, and more particularly, to a sterilizer for sterilizing an ambulance.

Plasma has long contributed to the domestic industry as a key technology in semiconductor manufacturing technology. In recent years, plasma technology has been fused with the medical industry, the beauty industry, and the food industry. Various types of therapeutic apparatuses using plasma have been emerging. In particular, various bio-application technologies have been developed in which a low-temperature plasma at atmospheric pressure is generated to generate a large amount of active radicals in the vicinity of a plasma generating apparatus, thereby exhibiting sterilizing action.

In the case of an ambulance, there is a risk of infection and it is necessary to continuously sterilize the inside of the ambulance. Accordingly, the workforce is continuously used for cleaning and disinfection. Although the sterilizing device such as an ozone sterilizer, an ion sterilizer, and an ultraviolet sterilizer is installed in an ambulance room, the effect of indoor air purification can be obtained, and the sterilizing effect on the wall of an ambulance room is insufficient.

Korean Patent No. 10-1273888 discloses a multipurpose sterilization sterilizer to which a dielectric barrier plasma discharge source is applied. The plasma source of the publication has a power supply electrode and a ground electrode arranged above and below the insulator and a cooling fan on the power supply electrode. An insulator is placed under the plate-type power supply electrode, and the linear ground electrode under it is wrapped with a separate insulator to closely contact the insulator. In this source structure, discharge efficiency and active species generation efficiency are low because the plasma generation voltage discharged between the two electrodes is as high as 20 kV. Particularly, the above publication is disadvantageous in the case where sterilization areas such as an ambulance or an indoor wall are wide because the sterilization chamber is disposed in the sterilization chamber.

That is, when sterilizing the whole area such as an ambulance or a hospital room using a plasma sterilizer, it is necessary to construct a sterilizer that has a better discharge efficiency and can achieve a sterilizing power to a desired place such as a wall.

SUMMARY OF THE INVENTION Accordingly, it is an object of the present invention to provide a plasma sterilizer capable of exerting a sterilizing power from the inside wall of an ambulance to an inside wall of an ambulance.

According to the above object, the present invention provides a plasma display panel comprising: a dielectric barrier discharge plasma source;

A fan that adds momentum to the plasma flow discharged from the plasma source; And an ultraviolet lamp capable of reducing an amount of ozone generated in a flow path through which the plasma flows; And activated carbon, and a humidifier may be added as needed to increase sterilization efficiency.

Wherein the plasma source comprises:

Forming a first electrode in the form of a fork on a first substrate made of an insulator, covering the power supply electrode with a dielectric, forming a fork-shaped second electrode on a second substrate made of an insulator, covering the ground electrode with a dielectric, Wherein the first substrate and the second substrate are arranged in parallel to each other so that the first electrode and the second electrode in the fork shape are staggered from each other so that the first electrode and the second electrode are interdigitated with each other.

In the plasma source according to the present invention, the first electrode formed on the first substrate and the second electrode formed on the second substrate are spaced apart from each other, and the arrangement thereof is such that the first substrate / the first electrode / / Protective film / spacing / second substrate / second electrode / dielectric / protective film.

That is, the first electrodes and the second electrodes are arranged in such a manner that they face the same upward or downward direction with respect to the substrate rather than directly facing each other.

In this case, the protective film may be omitted.

Further, in the present invention, in order to lower the discharge voltage, the thickness of the substrate or the dielectric layer can be controlled to be thin.

Further, the present invention can further comprise an ultraviolet lamp in the flow path through which the plasma flows.

Further, in the present invention, the flow path through which the plasma flows can be constituted by a curve.

In addition, the present invention may further include a filter for filtering foreign substances contained in the air introduced into the plasma source.

Also, the present invention provides a plasma sterilizer in which the plasma sterilizer module is assembled into a housing, and a battery and an inverter are built in the housing so as to be driven by a battery of 9 to 12V.

Further, the present invention provides a plasma sterilizer in which a sterilizer is enhanced by further connecting a humidifier to the plasma sterilizer.

In addition, the plasma sterilizer module may include a plurality of plasma sources.

In addition, the plasma sterilizer housing of the present invention is configured as a wall-mounted type, and the curved plasma-channel opening faces the front of the room to lengthen the distance of sterilizing force due to plasma.

According to the present invention, there is provided a sterilizer having a high sterilizing power by producing a large amount of active radicals with high plasma discharge efficiency due to a thin substrate and a dielectric thickness.

In addition, the plasma and active radicals can be moved by a considerable distance by the fan, so that it can be sterilized by reaching an ambulance or an indoor wall, thereby reducing the labor of cleaning or controlling work involving a separate attraction force.

In addition, according to the plasma source structure of the present invention, the discharge voltage can be lowered by controlling the thickness of the dielectric layer or the substrate to be thin, thereby increasing the discharge efficiency and extending the lifetime of the plasma source.

Further, the plasma sterilizer of the present invention can use a low-voltage battery and is electrically safe.

In addition, when the humidifying device is combined with the plasma sterilization of the present invention, the generated ozone is reduced, thereby becoming a safer sterilizer.

In addition, the plasma humidifying device can efficiently sterilize the active species by transporting and reacting the activated species to the ambulance and the indoor wall.

1 is a cross-sectional view and a plan view of a plasma sterilizer of the present invention.
2 is a schematic view of a plasma source included in the plasma sterilizer of the present invention.
3 is a plan view showing an electrode structure of the plasma source of FIG.
4 is a front view, a plan view, and left and right side views showing an appearance of the plasma sterilizer of the present invention.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 is a sectional view and plan view of a plasma sterilizer 100 of the present invention.

The plasma sterilizer 100 includes a fan 300 for blowing air to the plasma source, a plasma source 400 disposed adjacent to the fan, and a curved flow path 500 in which the generated plasma flows together with active radicals . In addition, activated carbon 600 is disposed in the flow path to reduce ozone and generate active atomic oxygen. Preferably, an ultraviolet lamp 700 is installed at the entrance of the flow path 500 to reduce ozone by ultraviolet rays and to perform primary sterilization. In addition, the plasma sterilizer module may have a filter at the fan inlet. The filter filters dust and germs from the air supplied to the plasma source. Such a plasma sterilizer module is built into a wall-mounted housing. The housing has an air inlet near the fan and an outlet for the plasma and radical including a plurality of blades at the outlet of the curved channel.

FIG. 1 is a sectional view and a plan view of a plasma sterilizer including two plasma sources 400 and two fans 300, respectively. However, the plasma source and fan can be one, and in some cases more than three can be included to perform powerful and rapid disinfection.

In the case of the ultraviolet lamp 700, it may be continuously lit, but it may be turned off when a person stays indoors or is in an ambulance.

2 is a cross-sectional view schematically showing a configuration of a plasma source 400 applied to the present invention. The electrodes consist of a pair of upper and lower plates, and an AC voltage is applied to discharge the plasma. That is, the first electrode 210 is formed as a power supply electrode on the first substrate 200, and the first electrode 210 is covered with the dielectric 230. Aluminum oxide is deposited as a protective film 250 on the dielectric 230 to prevent dielectric and hydration. The second electrode 240 is formed as a ground electrode on the surface of the second substrate 220 and covered with the dielectric 260. Aluminum oxide is deposited as a protective film 280 on the dielectric material 260 to prevent dielectric and hydration.

The plasma source 400 is constructed by arranging these two electrodes side by side. In this case, the first electrode 210 and the second electrode 240 do not directly face each other, but the second substrate 220 faces the first electrode 210 directly. Therefore, the arrangement order in the plasma source module is as follows. The first substrate / the first electrode / the dielectric / the protective film / the gap / the second substrate / the second electrode / the dielectric / the protective film. This arrangement makes it easy to adjust the interval between electrodes when real products are implemented, increases safety, and lengthens electrode life. The protective film is preferably formed as described above, but the plasma source may be formed in a state in which it is omitted.

On the other hand, it is necessary to design an electrode having a proper shape in order to increase the discharge efficiency. 3, the electrodes are designed in the form of a fork, and the first electrode 210 and the second electrode 240 are arranged side by side with a gap therebetween. Although the first electrode 210 and the second electrode 240 are not on the same plane, the first electrode 210 and the second electrode 240 may be arranged as shown in FIG. The first electrode 210 and the second electrode 240 may be disposed at positions where the forks are overlapped with each other or may be disposed in a staggered manner. These fork shapes and arrangements have geometrical conditions that can narrow the distance between electrodes to a favorable state for discharge and that discharge can occur well. The fork-shaped electrode may be made of a noble metal such as silver or copper or aluminum.

When an AC voltage is applied to the first electrode 210 and the second electrode 240, plasma is discharged between the two electrodes. 3, an opposite dielectric barrier discharge is generated between the first electrode 210 and the second electrode 240, so that the plasma discharge distribution is wide and the range of the generated active species is wide, which is suitable for enhancing the sterilizing power .

The substrate is made of an insulator and may be made of a flexible material having heat resistance such as glass, polyethylene terephthalate (PET), polyimide (PI), polyolefin (PO), polyether sulfone It is possible.

The size of the discharge start voltage required for plasma and active species generation can be controlled by adjusting the thickness of the dielectric 230, 260 and the substrate 200, 220. If these thicknesses are made thinner, the discharge voltage can be lowered, and the dielectric life is prolonged efficiently and, consequently, the plasma source life is prolonged.

The dielectric thickness may be approximately 50 to several hundred microns (less than 1000 microns), and the substrate thickness may be between 0.5 mm and several mm (less than 10 mm).

The aluminum oxide protective films 250 and 280 may be formed to a thickness of 1 to 5 탆.

Since the plasma sterilizer 100 of the present invention can be installed in an ambulance, a battery of 9 to 12 V can be used. The battery may be built into the sterilizer itself, or may be a battery in the vehicle. If it is indoors, it can also be used by connecting an adapter to a household power source. And a DC / AC high voltage inverter is included in the plasma sterilizer 100 since a plasma is generated by being driven with a 9-12 V battery voltage. The pulse-like driving current generated at this time has a considerably low value of several mA. Therefore, it is very safe electrically.

On the other hand, since ozone is harmful to the human body due to plasma generation, ozone is removed by the ultraviolet lamp. However, in order to more reliably remove ozone, the present invention binds activated carbon. Also, a humidifying device is preferably added to cause a reaction in which ozone becomes hydrogen peroxide through water vapor, thereby reducing ozone and enhancing sterilizing power.

Further, in order to further reduce the amount of ozone generated, an auxiliary backing electrode having an area larger by about 1 to 20% than the fork-shaped electrode is formed as a transparent electrode and is installed under the fork-shaped electrode. That is, the auxiliary backing electrode is originally formed in the form of a fork, which is an electrode shape, and its area is slightly larger, so that the silhouette is the same and a slight margin is formed.

The transparent electrode forming the auxiliary background electrode may be made of various materials such as ITO, AZO, ZnO, and graphene, and may be made of a transparent electrode. It may also be composed of various transparent flexible electrodes. When the auxiliary background electrode is formed, the layered arrangement of the electrodes in the order of the first substrate / auxiliary electrode / first electrode / dielectric / protective film / space / second substrate / auxiliary anode / second electrode / dielectric / .

 4 shows the overall appearance of the plasma sterilizer of the present invention. Designed as a wall-mounted type, the outlet appears toward the front when it is placed on the wall, which is due to the curved channel design. Through this outlet, the airflow of the fan and the steam spray of the humidifier can reach the walls of the room and the ambulance with considerable distance of the active species.

According to the plasma sterilizer of the present invention, it is possible to sterilize all of Escherichia coli, Staphylococcus aureus and the like in an ambulance or an indoor wall.

It is apparent that the present invention is not limited to the above-described embodiment, and that various applications and modifications can be made by those skilled in the art to which the present invention belongs.

100: Plasma sterilizer
200: first substrate
220: second substrate
210: first electrode
240: second electrode
230, 260: Dielectric
300: Fan
400: plasma source
500: (Curved) Euro
600: activated carbon
700: ultraviolet lamp
250, 280: dielectric protective film

Claims (12)

A dielectric barrier discharge plasma source;
A fan that adds momentum to the plasma flow discharged from the plasma source; And
An ultraviolet lamp and an activated carbon disposed in a flow path through which a plasma flows,
Wherein the plasma source comprises:
Forming a first electrode in the form of a fork on a first substrate made of an insulator, covering the first electrode with a dielectric,
Forming a second electrode in the form of a fork on a second substrate made of an insulator, covering the second electrode with a dielectric,
The first substrate and the second substrate are arranged in parallel to each other so that the fork-shaped first electrode and the second electrode are opposed to each other with an interval therebetween,
And the second substrate is disposed so as to face the first electrode covered with the dielectric. The plasma sterilizer module according to claim 1, wherein an aluminum oxide thin film is formed as a dielectric protective film for protecting the dielectric covering the electrode in the plasma source. The plasma sterilizer module of claim 1, wherein the thickness of the substrate or dielectric layer is adjusted to lower the discharge voltage. 2. The plasma display panel of claim 1, wherein in the plasma source, an auxiliary back electrode is disposed between the substrate and the fork-shaped electrode as a transparent electrode, and the auxiliary back electrode has a size 1 to 20% larger than the fork- A plasma sterilizer module. The plasma source according to claim 2, wherein a first electrode formed on the first substrate and a second electrode formed on the second substrate are arranged side by side with a gap therebetween, the arrangement being arranged on the first substrate / first electrode / dielectric / / Spacing / second substrate / second electrode / dielectric / protective film. The plasma sterilizer module according to claim 1, further comprising an ultraviolet lamp in a flow path of the plasma. The plasma sterilizer module according to claim 1, further comprising activated carbon in an air inlet and a flow path of the plasma. The plasma sterilizer module according to claim 1, wherein the flow path of the plasma flows in a curved line. The plasma sterilizer module according to claim 1, further comprising a filter for filtering air flowing into the plasma source. A plasma sterilizer in which the plasma sterilizer module of claim 1 is assembled into a housing and a high voltage inverter is built in the housing so that it can be driven at a voltage of 9 to 12V. 11. The plasma sterilizer of claim 10, further comprising a humidifier coupled to the plasma sterilizer to enhance sterilization power and to remove ozone from the plasma during the generation of the plasma. 11. The plasma sterilizer of claim 10, wherein the plasma sterilizer housing is configured as a wall-mounted type, and the curved plasma channel opening faces the front surface to extend a distance of sterilizing force due to plasma.

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