JP2010201038A - Deodorizing device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a deodorizing device which takes a measure to prevent occurrence of corona discharge between a high voltage cable and the vicinity portion of the insertion hole of a conductive case. <P>SOLUTION: The deodorizing device which supplies high voltage power from a high frequency power circuit to high voltage discharge means through the high voltage cable to discharge high voltage and thereby exhibits a deodorizing operation is provided with: a conductive case 21 storing the power circuit 11; the high voltage cable 20 connected to power circuit 11 and the high voltage discharge means 6 and 7 through the insertion hole 22 provided to the conductive case; and an insulating spacer 101 which covers the high voltage cable 20 across an air layer 23 at the portion of the insertion hole 22. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a deodorizing apparatus that deodorizes by high-pressure discharge.

  2. Description of the Related Art Conventionally, there has been known a deodorizing apparatus as described in Japanese Patent Application Laid-Open No. 2003-339839 (Patent Document 1) that provides high-voltage power to high-pressure discharge means with a high-voltage cable and performs high-pressure discharge to exert a deodorizing action. It has been. In this conventional deodorizing device, the high-pressure discharge means is housed in an insulating resin case, so that the occurrence of corona discharge between the case and the high-voltage cable is considered if a certain high pressure resistance is secured as the high-voltage cable. There is no need to do. Therefore, in the conventional degreasing apparatus, a single silicon electric wire or fluorine electric wire using a silicon resin or a fluororesin for the high-voltage cable is used. However, in such a high voltage cable covering form in such a deodorizing apparatus, there is a problem that corona discharge easily occurs between the high voltage cable and the conductive case when the case of the high voltage discharge means is made of conductive metal. There was a need to review the pressure resistance design.

  Conventionally, as a measure for preventing the occurrence of discharge between a plurality of high-voltage cables that feed power to the high-voltage generator, Japanese Patent Application Laid-Open No. 2004-201445 (Patent Document 2) describes a certain number of high-voltage cables. A technique using an insulating high-voltage cable holding member that simultaneously holds the gap while maintaining a distance is disclosed. However, it is insufficient to simply cover the high voltage cable passing through the insertion hole of the conductive case with the insulating high voltage cable holding member.

JP 2003-339839 A JP 2004-201445 A

  The present invention has been made in view of the above-described problems of the prior art. A high-voltage cable is passed through a conductive case that houses a high-voltage, high-frequency power circuit using an insertion hole formed therein, and an internal power circuit An object of the present invention is to provide a deodorizing apparatus that takes measures to prevent corona discharge from occurring between a high-voltage cable and a portion near the insertion hole of a conductive case in a deodorizing apparatus that connects an external high-voltage discharge means with a high-voltage cable. And

  A feature of the present invention is that in a deodorizing device that exerts a deodorizing action by supplying high-voltage power from a high-voltage, high-frequency power circuit to a high-voltage discharge means with a high-voltage cable and discharging the high voltage, a conductive case that houses the power circuit A high-voltage cable connected to the power supply circuit and the high-voltage discharge means through an insertion hole provided in the conductive case, and an insulating spacer that covers the high-voltage cable through an air layer in the insertion hole portion Is a deodorizing device.

  According to the present invention, the insulating layer for covering the high-voltage cable with the air layer is provided in the portion corresponding to the insertion hole of the conductive case, so that the air layer with extremely high electrical insulation characteristics is electrically connected to the high-voltage cable. The deodorizing device using the conductive case can be interposed between the peripheral portion of the insertion hole of the conductive case, and by a double insulation measure of insulation by the covering material of the high voltage cable and insulation by the air layer Corona discharge can be reliably prevented and safe use can be guaranteed.

Sectional drawing of the deodorizing apparatus of the 1st-3rd embodiment of this invention. In the deodorizing apparatus of the 1st Embodiment of this invention, the expanded sectional view of the part which made the high voltage | pressure cable penetrate the conductive case of a power supply circuit. In the deodorizing apparatus of the 2nd Embodiment of this invention, the expanded sectional view of the part which made the high voltage | pressure cable penetrate the conductive case of a power supply circuit. In the deodorizing apparatus of the 3rd Embodiment of this invention, the expanded sectional view of the part which made the high voltage | pressure cable penetrate the conductive case of a power supply circuit.

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

  (First Embodiment) FIG. 1 is a longitudinal sectional view of a deodorizing apparatus according to one embodiment of the present invention, which is formed by a duct member 2 such as a cold air duct of a refrigerator or an air duct in an air conditioner. A blower fan 4 is disposed in the air passage 3, a photocatalyst module 5 is provided on the windward side, and an ozone decomposition catalyst filter 10 is disposed between the photocatalyst module 5 and the blower fan 4.

  The photocatalyst module 5 is close to two photocatalyst filters 6 and 7 fixed by applying a photocatalyst material typified by titanium oxide on the surface of a substrate made of a porous ceramic such as alumina or silica and then drying or sintering. Disposed between the photocatalyst filters 6 and 7 is a discharge electrode 8 formed in a mesh shape by etching a thin plate such as stainless steel. A counter electrode 9 formed in the same manner as the discharge electrode 8 is disposed on the leeward side. Note that two photocatalyst filters in the photocatalyst module 5 are not necessarily required, and the counter electrode 9 and the discharge electrode 8 may be provided before and after one photocatalyst filter depending on the application.

  Reference numeral 11 denotes a power supply circuit, which applies a positive pulsed DC high voltage through the high voltage cable 20 between the discharge electrode 8 and each counter electrode 9 by the high voltage generating transformer 12.

  The mesh size of the discharge electrode 8 is formed larger than the mesh size of the counter electrode 9. With this configuration, the discharge electrode 8 and the counter electrode 9 function as a discharge means for generating ultraviolet rays, and discharge occurs between both electrodes, generating ultraviolet rays having a wavelength of 380 nm or less.

  Further, when the discharge electrode 8 and the counter electrode 9 are discharged, ozone is generated together with ultraviolet rays. Therefore, the photocatalyst module 5 functions as ozone generating means as well as a function of completely decomposing harmful gas components by generation of active oxygen by ultraviolet rays. The ozone decomposition catalyst filter 10 that absorbs ozone installed at a predetermined distance from the photocatalyst module 5 on the leeward side is formed of a honeycomb-shaped sintered body mainly composed of manganese dioxide. .

  When operating the deodorizing apparatus having the above-described configuration, it is performed as follows. When the power supply circuit 11 is energized to drive the blower fan 4 and a high voltage of 20 kHz is applied between the discharge electrode 8 and the counter electrode 9, for example, at a peak voltage of 6 kV, discharge occurs between the electrodes and ultraviolet rays are generated. To do. By irradiating the photocatalyst filters 6 and 7 with the ultraviolet rays, the active oxygen generated by activating the photocatalyst flows down the air passage 3, and the photocatalytic filter 6 and 6 are oxidized by a strong oxidizing action of hydroxyl radicals (free radicals). 7 is deodorized by decomposing bonds of odorous gas components and organic compounds adhering to the surface of 7 and making them odorless or reducing odor. In addition, the bacterial cell membrane of the fungus is embrittled and antibacterial is performed, and the growth of microorganisms on the surfaces of the photocatalytic filters 6 and 7 is suppressed by oxidative decomposition action to decompose and remove the deodorization device and the dirt on the wall surface of the air passage 3. .

  In the deodorizing apparatus that performs such a mechanism and action, noise is generated because the high-voltage and high-frequency power supply circuit 11 is mounted as described above. For this reason, when this deodorizing device is installed in an automobile to clean the air inside the vehicle, it is necessary to prevent leakage of high-frequency noise from the power supply circuit 11, and it is necessary to accommodate the power supply circuit 11 in the conductive case 21. is there. However, in the case of the conductive case 21, the high voltage cable 20 is led out from the internal power supply circuit 11 through the insertion hole 22 opened in the conductive case 21 and connected to the discharge electrode 8 and the counter electrode 9 to apply high voltage and high frequency power. Therefore, the insulation coating resin becomes a dielectric and the insulation performance against discharge is not so high if only the electric wire with a normal insulation coating is used for the high-voltage cable 20, and the insertion hole 22 of the high-voltage cable 20 and the conductive case 21 is not provided. Corona discharge easily occurs between the peripheral portion. Therefore, in the deodorizing apparatus according to the present embodiment, as shown in FIG. 2, a high-voltage cable 20 in which an insulating corrugated tube 101 is covered over almost the entire length of a normal insulated cable 100 is used. ing. An insulating bush 102 is fitted into the insertion hole 22 of the conductive case 21 to prevent and support the high voltage cable 20 from being damaged. As a normal insulation-coated cable, a single silicon electric wire or a fluorine electric wire using a conventionally used silicon resin or fluorine resin can be used.

  The corrugated tube 101 is made of a polypropylene resin that is heat resistant as well as withstand voltage insulation, because the insulation-coated cable 100 becomes somewhat hot. As this corrugated tube 101, a heat-resistant nylon tube can be used instead of polypropylene.

  According to the present embodiment, by adopting the above structure for the high-voltage cable 20, the surface of the internal insulated cable 100 and the periphery of the insertion hole 22 at the portion corresponding to the insertion hole 22 of the conductive case 21. In the deodorizing apparatus using the conductive case 21, the air layer 23 can be interposed between the insulation of the high voltage cable 20 and the insulation by the air layer 23. Occurrence can be reliably prevented, and high-frequency noise can be removed and safe use can be guaranteed. The corrugated tube 101 has the same effect even if it is partially covered at least at the through-hole portion of the high-voltage cable 20 with respect to the insertion hole 22 and the front and rear thereof. Even if there is a portion in contact with or close to the conductive member in an area where the cable 20 can be routed, there is an effect that discharge at that portion can be prevented.

  Actually, when an insulation-coated cable not covered with the corrugated tube 101 was used, the discharge was easily generated due to the energization of 0-peak voltage of 6 kV, high frequency of 20 kHz, and high frequency power. In the case of the embodiment, the occurrence of such discharge was not recognized by adopting the high-voltage cable 20 composed of the insulation-coated cable 100 covered with the corrugated tube 101.

  (Second Embodiment) A deodorizing apparatus according to a second embodiment of the present invention will be described with reference to FIG. The present embodiment is characterized in that, in the deodorizing apparatus similar to that of the first embodiment shown in FIG. 1, a high-voltage cable 20 that supplies high-voltage and high-frequency power from the high-voltage power supply circuit 11 to the discharge electrode 8 and the counter electrode 9. In the structure. Hereinafter, in the present embodiment, components common to those in the first embodiment are denoted by common reference numerals, and redundant description is omitted.

  As shown in FIG. 3, as the high-voltage cable 20, a corrugated tube 101 having a diameter capable of interposing an air layer 23 having substantially the same thickness as that of the insulation coating material 100A is adopted for the internal insulation cable 100. It is characterized by that.

  By making the high-voltage cable 20 have the structure shown in FIG. 3, the thickness of the air layer 23 becomes thicker than that of the first embodiment, the insulation characteristics can be improved by the interposition of the air layer 23, and the generation of corona discharge is further increased. It can be surely prevented.

  Even in the present embodiment, the corrugated tube 101 has the same effect even if the corrugated tube 101 is only partially attached to the through hole 22 and the front and rear of the through hole 22 in the high voltage cable 20. By covering the entire length, even if there is a portion in contact with or close to the conductive member in the area where the high-voltage cable 20 can be routed, there is an effect that discharge at that portion can be prevented.

  (Third Embodiment) A deodorizing apparatus according to a third embodiment of the present invention will be described with reference to FIG. A feature of this embodiment is that the high-voltage cable 20 supplies high-voltage and high-frequency power from the high-voltage power supply circuit 11 to the discharge electrode 8 and the counter electrode 9 in the deodorizing apparatus similar to the first embodiment shown in FIG. In the structure. Hereinafter, in the present embodiment, components common to those in the first embodiment are denoted by common reference numerals, and redundant description is omitted.

  As shown in FIG. 4, a corrugated tube 101 having a diameter capable of interposing an air layer 23 having substantially the same thickness as that of the insulating covering material 100 </ b> A as an internal insulating cable 100 is mounted as the high-voltage cable 20, and air The layer 23 is filled with insulating beads 24. Ceramic beads or silicon beads are used for the insulating beads 24.

  By forming the high-voltage cable 20 in the structure shown in FIG. 4, the thickness of the air layer 23 can be uniformly formed and maintained around the insulated cable 100 by the interposition of the insulating beads 24, and the insulation characteristics by the interposition of the air layer 23 And the generation of corona discharge can be prevented more reliably.

  In the present embodiment, an insulating straight tube may be employed instead of the corrugated tube 101, and the inner air layer 23 may be filled with the insulating beads 24.

  Further, even in the present embodiment, the corrugated tube 101 has the same effect even if it is only partially attached to the through portion of the high-voltage cable 20 through the insertion hole 22 and the front and rear thereof. By covering the entire length, even if there is a portion in contact with or close to the conductive member in the area where the high-voltage cable 20 can be routed, there is an effect that discharge at that portion can be prevented.

2 Duct member 3 Air passage 4 Blower fan 5 Photocatalyst module 6, 7 Photocatalyst filter 8 Discharge electrode 9 Counter electrode 10 Ozone decomposition catalyst filter 11 Power supply circuit 12 High voltage generating transformer 20 High voltage cable 21 Conductive case 22 Insertion hole 23 Air layer 24 Insulation Bead 100 insulation coated cable 100A insulation coating 100B core wire 101 corrugated tube 102 insulation bush

Claims (6)

In a deodorizing device that exerts a deodorizing action by supplying high-voltage power from a high-voltage, high-frequency power supply circuit to a high-voltage discharge means with a high-voltage cable, and causing high-pressure discharge.
A conductive case for housing the power supply circuit;
A high-voltage cable connected to the power circuit and the high-voltage discharge means through an insertion hole provided in the conductive case;
A deodorizing apparatus comprising: an insulating spacer that covers the high-voltage cable through an air layer in the insertion hole portion.   The deodorizing apparatus according to claim 1, wherein the spacer is a corrugated tube that covers the high-voltage cable.   The deodorizer according to claim 2, wherein the spacer is a corrugated tube filled with insulating beads.   The deodorizing apparatus according to claim 1, wherein the spacer is formed by filling an insulating bead with an insulating bead.   The deodorizer according to any one of claims 1 to 4, wherein the spacer is covered over the entire length of the high-voltage cable.   The deodorizing apparatus according to any one of claims 1 to 5, wherein an insulating bush is attached to a peripheral edge of the insertion hole of the conductive case to support the high-voltage cable.

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