JPH10249236A - Electrode for corona discharge - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent an accident such as the damage of an electrode or the injury of a finger from occurring when cleaning an electrode for corona discharge by attaching a plate-like electrode part with protrusions formed on the edge part to an insulating body part in such a way that the protrusions are exposed and also providing a guard part for preventing the protrusions from jutting out into the body part from the edge part of the body part. SOLUTION: This electrode A for corona discharge comprises an electrode part 100 formed of a conductive flat plate by punching with triangular protrusions 110 formed at an equal interval on the edge part and also terminal parts 120 formed on both right/left end parts, and an insulating body part 200 in which the electrode part 100 is mounted with the protrusions 110 exposed. In this case, the body part 200 is formed of an insulating synthetic resin, for example, ABS in an almost valley shape as viewed laterally, and has both lateral edges formed as a guard part 210 in the longitudinal direction. In addition, the protrusions 110 are set in such a manner that they do not protrude from the edge part of the body part 200 by making the guard part 210 taller than the protrusions 110 of the electrode part 100 which is insert-molded.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a corona discharge electrode used in, for example, an air conditioner or an air purifier having an air purifying function.

[0002]

2. Description of the Related Art There are air conditioners and air purifiers having an air purifying function for purifying air even when cooling and heating are not performed, using so-called ion wind generated by corona discharge. As shown in FIG. 5, a conventional corona discharge electrode B used for an air conditioner or the like includes a thin metal wire 500 having conductivity and a pair of springs 510 attached to both ends of the metal wire 500. Have. The spring 510 has a function of connecting the corona discharge electrode B to a power supply (not shown) and a function of pulling the metal wire 500. The corona discharge electrode B collects dust in cooperation with a plate-shaped dust collecting electrode 300 having a dust collector (not shown) facing the front. That is, when a DC high-voltage power supply is applied between the corona discharge electrode B and the dust collection electrode 300, a potential difference occurs between the corona discharge electrode B and the dust collection electrode 300, thereby generating corona discharge. .
The dust is positively charged by the corona discharge, attracted to the dust collecting electrode 300 on the minus side, and adheres to the dust collecting paper.

[0003]

However, the above-mentioned conventional corona discharge electrode has the following problems. Since dust may also adhere to the corona discharge electrode used in an air conditioner or the like, regular cleaning is required every two to three months to maintain a normal function. In addition, regular replacement of waste paper is necessary. At the time of cleaning or the like, the corona discharge electrode may become unusable due to breakage of a metal wire constituting the corona discharge electrode or expansion of a spring. In addition, a finger or the like may be cut by a metal wire.

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and provides a corona discharge electrode which does not become unusable or does not cut off fingers or the like when cleaning the corona discharge electrode. It is intended to be.

[0005]

A corona discharge electrode according to the present invention has a plate-like electrode portion having a plurality of protrusions formed on an edge thereof, and an insulating member to which the electrode portion is attached by exposing the protrusions. And a guard having a protruding portion that does not protrude from an edge of the main body.

[0006] The electrode portion of the corona discharge electrode includes:
Insert molded into the body.

Further, the electrode portion of the corona discharge electrode may be fitted in a groove formed in the main body.

[0008]

DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 is a schematic partially cutaway perspective view of a corona discharge electrode according to an embodiment of the present invention, and FIG. 2 is a schematic cross section of the corona discharge electrode according to the embodiment of the present invention. FIG. 3A is a cross-sectional view taken along line II in FIG.
FIG. 1B is a sectional view taken along line II-II in FIG. 1, and FIG. 3 is a schematic sectional view showing a configuration of an air conditioner having an air cleaning function using a corona discharge electrode according to an embodiment of the present invention. FIG. 4 is a schematic partially cutaway perspective view of a corona discharge electrode according to another embodiment of the present invention.

An electrode A for corona discharge according to an embodiment of the present invention has a plate-like electrode portion 100 having a plurality of protrusions 110 formed on an edge portion, and the electrode portion 100 exposes the protrusions 110. And an insulative main body 200 to be attached.

The electrode portion 100 is formed by stamping a conductive strip-shaped flat plate. Triangular protrusions 110 are formed at one end in the longitudinal direction at regular intervals. . Further, terminal portions 120 for connecting the electrode portion 100 to a power source (not shown) are formed at both left and right end portions of the electrode portion 100. This terminal section 120 includes
An opening 121 used for connecting to a power supply is provided.

The electrode portion 100 has a pair of holes 13 which are co-bore with a mounting hole 220 of the body portion 200 described later.
0 (see FIG. 2B).

On the other hand, the main body 200 is made of an insulating synthetic resin, for example, ABS or polystyrene. In the main body 200, the electrode section 100 is insert-molded. Moreover, the protrusion 110 of the electrode unit 100
Are insert-molded in an exposed state.

As shown in FIG. 2 and the like, the main body 200 is formed in a substantially trough shape in a side view. That is, the guard portion 210 is formed at one end of the main body 200 in the longitudinal direction. The guard portion 210 is set to be taller than the projecting portion 110 of the insert-molded electrode portion 100 so that the projecting portion 110 does not project from the edge of the main body 200.

Since the electrode section 100 is insert-molded in the main body 200, the valleys between the projections 110 are also filled with the synthetic resin constituting the main body 200. Therefore, in the electrode section 100, except for the terminal section 120, only the protrusion 110 is exposed to the outside.

Further, a pair of mounting holes 220 for mounting the corona discharge electrode A to a component such as a cabinet (not shown) such as an air conditioner is formed on both left and right ends of the main body 200. That is, this mounting hole 22
0 is the electrode part 10 insert-molded in the main body part 200.
0 and the hole 130, and the corona discharge electrode A
Is used to attach to the above-mentioned constituent members with screws (not shown).

The corona discharge electrode A thus constructed
Is attached to a component such as an air conditioner using the screw, and is connected to a DC high-voltage power supply at a terminal portion 120. Dust collection electrode 3 corresponding to this corona discharge electrode A
The dust that is charged due to the corona discharge occurring between the dust collection electrode and the dust collector is attracted to the dust collection electrode 300 to generate a so-called ion wind, and the dust is adsorbed to the dust collection electrode 300. 3, 310 is a fan, 320 is a heat exchanger, 330 is a filter, and 340 is a cabinet 350.
It is an opening established in.

The above-mentioned corona discharge electrode A is composed of a main body 2
Although the electrode portion 100 is formed by insert molding in 00, it may be configured as follows. That is, as shown in FIG. 4, a groove 230 corresponding to the electrode 100 is formed in the main body 200, and the electrode 100 is fitted into the groove 230 so that the protrusion 110 projects from the groove 230. May be used. In this case, it is necessary to set the width of the groove 230 and the thickness of the electrode 100 so that the electrode 100 is not easily dropped from the groove 230. However, the mounting hole 220 of the main body 200 and the electrode 10
The electrode portion 100 and the main body portion 20 are formed by the
0 may be fastened with screws (not shown).

In the above-described two embodiments, the electrode section 10 is used to connect the corona discharge electrode A to the power supply.
Although the terminal portion 120 was provided in the electrode portion 100, the terminal portion 120 was not formed in the electrode portion 100, and the mounting hole 220 of the main body portion 200 and the hole portion 130 of the electrode portion 100 were made to have the same hole. It is also possible to use a conductive screw for attaching A to a component member of the air conditioner, and to connect to the power supply via this screw. This is because the electrode unit 100 is
Even if the type is insert-molded on
It is also possible to use a type in which the electrode portion 100 is fitted in the groove portion 230 of FIG.

[0019]

The electrode for corona discharge according to the present invention comprises an electrode portion having a plurality of protrusions formed on an edge thereof, and a main body having an insulating property to which the electrode portion is attached by exposing the protrusions. The main body has a guard that does not protrude from the edge of the main body.

Therefore, even if a certain force is applied to the electrode portion at the time of periodic cleaning or the like, the electrode portion will not be damaged and become unusable as in the related art. Further, since the protruding portion of the electrode portion is not protruded by the guard portion, it is difficult to apply a force to the electrode portion, and there is no possibility of breakage. Further, even if the electrode portion is sharp, it does not protrude from the guard portion, so that there is no risk of damaging the fingers and the like. further,
Since the protruding portion is formed on the electrode portion, corona discharge can be generated even at a lower voltage than a conventional corona discharge electrode using a metal wire, so that it is efficient.

When the electrode section of the corona discharge electrode is insert-molded in the main body, the electrode section and the main body are integrated with each other, so that the replacement operation can be performed easily.

Further, if the electrode portion of the corona discharge electrode is fitted in a groove formed in the main body, only the electrode portion can be replaced.

[Brief description of the drawings]

FIG. 1 is a schematic partially broken perspective view of a corona discharge electrode according to an embodiment of the present invention.

FIG. 2 is a schematic sectional view of a corona discharge electrode according to an embodiment of the present invention, and FIG.
FIG. 1B is a sectional view taken along line II-II in FIG. 1.

FIG. 3 is a schematic cross-sectional view showing a configuration of an air conditioner having an air cleaning function using a corona discharge electrode according to an embodiment of the present invention.

FIG. 4 is a schematic partially broken perspective view of a corona discharge electrode according to another embodiment of the present invention.

FIG. 5 is a schematic configuration diagram of a conventional dust collection mechanism using this type of corona discharge electrode.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 100 Electrode part 110 Projection part 200 Main body part 210 Guard part A Corona discharge electrode

Claims (3)

[Claims] 1. An electronic apparatus comprising: a plate-shaped electrode portion having a plurality of protrusions formed on an edge; and a body having an insulating property to which the electrode portion is attached by exposing the protrusions. The portion has a guard portion in which the protrusion does not protrude from an edge of the main body portion. 2. The corona discharge electrode according to claim 1, wherein said electrode portion is insert-molded in a main body portion. 3. The corona discharge electrode according to claim 1, wherein said electrode portion is fitted in a groove formed in a main body portion.