JP3170358U - Ozone generator - Google Patents

Abstract

An object of the present invention is to provide an ozone generator capable of generating high-concentration ozone together with negative ions (anions) at low cost. A pair of planar electrode layers, a power source for applying a high voltage to the pair of electrode layers, and a dielectric made of a planar ceramic layer or the like are opposed to the plane of the pair of electrodes. The electrode layer is made of a mesh-like member made of a conductive linear material, and the conductive linear material has a linear center portion made of titanium and at least a part of the outer periphery of the linear center portion. It comprised with the mesh-shaped electrode layer which has the outer peripheral part which consists of a titanium oxide to coat | cover. [Selection] Figure 1

Description

  The present invention relates to an ozone generator that generates ozone by applying a high voltage to an electrode and discharging it into the air.

It has been conventionally known that ozone (O ₃ ) has a strong oxidizing action, and its oxidizing power is used to examine its use in various applications such as sterilization, antibacterial, deodorization, decolorization, and removal of organic substances. Yes.

Ozone is generally produced by applying a high voltage to a pair of electrodes and discharging them into the air (see, for example, Patent Document 1). For example, Patent Document 1 discloses the invention of the applicant of the present application. In FIG. 1 shown as the prior art, a ceramic plate (insulator) is provided between two flat metal electrodes with a certain interval. And a pair of flat plate metal electrodes are energized and discharged to dissociate oxygen molecules (O ₂ ) in the air to generate negative ions (anions) (O ⁻ ), and then Ozone (O ₃ ) is produced by recombination with oxygen molecules.

  Further, in Patent Document 2, a ceramic body is disposed between two flat metal electrodes, a discharge is generated in the pores penetrating the ceramic body, and the raw material gas is processed into a plasma reaction by this discharge. A plasma chemical reaction apparatus discharged as a processing gas is disclosed.

  In the ozone production process, negative ions (anions) are also generated together with ozone, and the use of these negative ions (anions) for various purposes such as blood purification, blood glucose lowering, and fatigue recovery is being studied.

In particular, as interest in bird flu, nosocomial infections, and the like has increased in recent years, there has been an increasing demand for portable and indoor ozone generators as a means of preventing infectious diseases.
JP 2008-226678 A JP-A-8-38881

  However, when the present inventors examined, when ozone is produced with the apparatus shown in FIG. 1, which is the prior art of Patent Document 1, even if a water-resistant film is provided on the outer main surface of the metal electrode, the moisture in the air is metal. Because of contact with the side surface of the electrode, the production efficiency of ozone is reduced due to the charging and heat generation of the water, and the durability of the apparatus itself is also reduced (for example, the durability time in an atmosphere of a temperature of 60 ° C. and a humidity of 90%). For 500 hours or less).

  Therefore, in order to be able to discharge at a constant voltage without using a dielectric such as ceramic, the conductive linear material comprises a mesh-like member made of a conductive linear material instead of a metal electrode. Proposed an electrode material having a linear center portion made of titanium and an outer peripheral portion made of titanium oxide covering at least a part of the outer periphery of the linear center portion. However, although discharge occurred from the mesh-shaped protrusions, conditions were not sufficient for efficient discharge.

  In addition, as disclosed in Patent Document 2, ozone is a substance having low stability, and is easily decomposed by, for example, wind (forced air flow by a fan, etc.). However, it is difficult to efficiently discharge with a high output (high voltage) device and to obtain high concentration ozone at low cost.

  Under such circumstances, the present invention can stably discharge without requiring a forced air flow such as a fan in a high-humidity atmosphere. Another object of the present invention is to provide an ozone generator that can be generated together.

In order to solve the above problems, the ozone generator of the present invention has (1) a pair of planar electrode layers, a power source for applying a high voltage to the pair of electrode layers,
An ion generating device in which a dielectric material such as a planar ceramic layer is laminated between opposing surfaces of the pair of electrodes,
At least one of the pair of electrode layers is a mesh member made of a conductive linear material, and the conductive linear material has at least one of a linear center portion made of titanium and an outer periphery of the linear center portion. And a mesh-like electrode layer having an outer peripheral portion made of titanium oxide covering the portion.
(2) Moreover, the electrode layer laminated | stacked on both surfaces of the said ceramic layer is laminated | stacked by protruding the said ceramic layer, and an electrode fixing | fixed part is provided in this protruding part, It is characterized by the above-mentioned.
(3) Further, in the state where the electrode layer, the ceramic layer, and the electrode layer are laminated, the protruding portion having the electrode fixing portion of the opposing electrode layers is provided at a position where they do not overlap each other. .

  According to the present invention, at least one of the pair of electrode layers is constituted by a mesh-like electrode layer, and a dielectric layer such as a ceramic layer is interposed therebetween, so that discharge has occurred only at the edge of the conventional electrode. On the other hand, discharge was started on the front surface of the mesh electrode layer, and an extremely efficient discharge effect was obtained.

  Further, since the electrode layer is laminated so as to protrude from the ceramic layer, and the electrode layer is fixed to the protruding portion, it is easy to fix and it is easy to supply power.

  Furthermore, since the protruding portions having the electrode fixing portions between the opposing electrode layers are provided at positions that do not overlap each other, a safe ozone generator can be provided without short-circuiting even when a high voltage is applied.

It is a figure which shows a part of ozone generator of this invention. It is explanatory drawing which shows the laminated structure of a dielectric material interposed between a pair of electrode layer of this invention, and it. It is the elements on larger scale when the mesh member which comprises the electrode material of this invention is seen from the main surface side.

The present invention provides a pair of planar electrode layers 3 and 3, a power source (not shown) for applying a high voltage to the pair of electrode layers 3 and 3, and a counter to the plane of the pair of electrodes. It is a major premise that the ion generator 1 is formed by laminating a dielectric 4 made of a planar ceramic layer or the like.
Under this premise, the electrode material constituting the electrode layer 3 of the present invention will be described. The electrode material of the present invention comprises a mesh-like member made of a conductive linear material, and the conductive linear material covers at least a part of the linear center portion made of titanium and the outer periphery of the linear center portion. And an outer peripheral portion made of titanium oxide.

  The electrode layers 3 and 3 of the present invention are composed of a mesh member, and FIG. 3 shows an explanatory diagram when the mesh member is viewed from the main surface side. As shown in FIG. 3, the main surface shape is a convex shape (FIG. 3A), a triangular shape (FIG. 3B), or any other polygonal shape other than these shapes, a circular shape, an elliptical shape, etc. The electrode layer 3 desirably has a protruding portion 3H from the dielectric layer 4 when the electrode layers 3, 3, the dielectric layer 4, and the electrode layer 3 are stacked. And it is good to provide an electrode fixing | fixed part (electrode layer fixing hole 5) in this protrusion part 3H.

Further, in the state where the electrode layer 3, the dielectric 4 (ceramic layer) and the electrode layer 3 are laminated, the protruding portion 3H having the electrode fixing portions of the opposing electrode layers 3 and 3 has a position where they do not overlap each other. Do it.
In this embodiment, in FIG. 3A, the upper layer side 3U and the lower layer side 3D of the convex electrode layer 3 are inverted and the convex portions are opposed to each other, as shown in FIG. The layers 4 are stacked via a ceramic plate (see the right side of FIG. 3A and FIG. 1).

  In this manner, the pair of electrode layers 3 and 3 according to the present invention and the dielectric layer 4 interposed between the electrode layers 3 and 3 are laminated, and the electrode layers 3 and 3 have a protruding portion 3H. The protruding portion 3H serves as an electrode fixing portion, and power is supplied from at least one end of the electrode fixing portion. Specifically, it is supplied from at least one of the electrode layer fixing screws 7.

  By doing so, discharge occurs on the surface side of the electrode layer 3 that is vertically overlapped at the center of the dielectric layer (ceramic layer) 4 and ions are generated. In addition, when a high voltage is applied, discharge occurs in the entire overlapping area in the upper and lower portions of the mesh-like electrode layer 3, and extremely efficient ions are generated.

  The mesh member used for the electrode material of the present invention is composed of a conductive material, and it is preferable that this conductive linear material is arranged in parallel every 2 mm to 10 mm. What is arrange | positioned in parallel with every other is more preferable, and what is arrange | positioned in parallel every 2 mm-5 mm is further more preferable.

  If the arrangement interval of the conductive linear members is less than 2 mm, it is difficult to obtain a mesh member having a desired shape because the formability of titanium constituting the conductive linear material is poor. Moreover, when the arrangement | positioning space | interval of an electroconductive linear material exceeds 10 mm, when using as an electrode, it will become difficult to obtain ozone of desired density | concentration.

In the conductive linear material, the constituent material of the linear central portion is made of titanium, so that the heat generation can be suppressed when the electrode material of the present invention is used as an electrode. In addition, by using titanium oxide as the constituent material of the outer periphery of the conductive linear material, ozone can be stably generated when the electrode material of the present invention is used as an electrode. As titanium oxide, it is preferable to use titanium dioxide (TiO ₂ ).

  As the cross-sectional structure of the conductive linear material in the electrode material of the present invention, the cross section of the linear central portion made of titanium can include a quadrangular shape or a circular shape. An arbitrary cross-sectional shape such as an elliptical shape can be adopted. In addition, the outer peripheral portion made of titanium oxide usually has a cross-sectional shape corresponding to the cross-sectional shape of the linear center portion, and when the cross-sectional shape of the linear center portion is a square shape, it is a quadrangular shape, and the cross section of the linear central portion. When the shape is circular, it has a circular cross-sectional shape, but both do not necessarily have a corresponding cross-sectional shape. Further, the cross-sectional shape and cross-sectional area of the conductive linear material are preferably constant in the length direction, but these are not necessarily constant.

  The thickness of the linear central portion made of titanium is preferably 0.3 mm to 1 mm, more preferably 0.3 mm to 0.8 mm, and still more preferably _0.3 mm to 0.5 mm. . Further, the thickness of the outer peripheral portion made of titanium oxide is preferably 20 μm to 300 μm, more preferably 20 μm to 200 μm, and further preferably 40 μm to 200 μm.

  The outer peripheral portion made of titanium oxide only needs to cover at least a part of the outer periphery along the length direction of the linear center portion, but covers the entire outer periphery along the length direction of the linear center portion. It is preferable that Further, in the electrode material of the present invention, both ends of the linear center portion in the length direction are not covered with titanium oxide in order to ensure conductivity and discharge performance.

  In this embodiment, the upper and lower electrode layers 3 and 3 are configured in a mesh pattern, but the upper and lower electrode layers 3 and 3 are not necessarily formed in a mesh pattern. For example, the lower electrode layer 3 is not meshed. A flat electrode plate may be used. Further, reference numeral 8 in FIG. 1 is a ceramic layer fixing screw for fixing the dielectric layer 4 and can be fixed to the frame 2.

  The electrode material configured as the electrode layer 3 of the present invention can be stably discharged even in a high humidity atmosphere, with the mesh electrode layers 3 and 3 and the dielectric layer 4 interposed therebetween, Since a large amount of high-concentration ozone and negative ions (anions) can be generated on the entire surface of the electrode layer 3 at the overlapping portion of the electrode layers 3 and 3, it is suitably used for various ozone generators such as an ozone generator for business use. be able to.

DESCRIPTION OF SYMBOLS 1 ... Ozone generator 2 ... Resin frame 3 ... Electrode layer 4 ... Dielectric layer 5 ... Electrode layer fixing hole 6 ... Ceramic layer fixing hole 7 ... Electrode layer fixing screws 8 ... Ceramic layer fixing holes

Claims (3)

A pair of planar electrode layers, a power source for applying a high voltage to the pair of electrode layers,
An ion generating device in which a dielectric material such as a planar ceramic layer is laminated between opposing surfaces of the pair of electrodes,
At least one of the pair of electrode layers is a mesh member made of a conductive linear material, and the conductive linear material has at least one of a linear center portion made of titanium and an outer periphery of the linear center portion. An ozone generator comprising a mesh-like electrode layer having an outer peripheral portion made of titanium oxide covering the portion.   2. The ozone generator according to claim 1, wherein the electrode layers laminated on both surfaces of the ceramic layer are laminated so as to protrude from the ceramic layer, and an electrode fixing portion is provided at the protruding portion.   2. The protruding portion having an electrode fixing portion between opposing electrode layers in a state in which the electrode layer, the ceramic layer, and the electrode layer are laminated, is provided at a position that does not overlap each other. The ozone generator according to 2.

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