JP2932270B1 - Static eliminator - Google Patents

Abstract

Abstract: PROBLEM TO BE SOLVED: To provide a static eliminator capable of generating ions without disturbing the flow of air in a nozzle hole, having good discharge performance, and facilitating wiring work without a high-voltage cable. SOLUTION: The present invention is provided with an air nozzle A in which a plurality of air outlets 8 are arranged in a row, and a casing B fitted and fixed to the outside of the air nozzles A. The plurality of air outlets of the air nozzle A are provided. 8, a plurality of projections 11 on each side
b ..., 13b ... are arranged in opposition to each other, and a pair of electrodes 11 and 13
In this configuration, a high-voltage power supply 14 for applying a voltage to the pair of electrodes 11 and 13 is mounted.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a printing machine,
The present invention relates to a rotary press, a semiconductor, a sheet such as a film or paper, and a static eliminator for removing static and dust from foods and the like.

[0002]

2. Description of the Related Art As a conventional static eliminator and dust remover, Japanese Utility Model No.
There is one described in Japanese Patent No. 37383.

As shown in FIG. 12, the static eliminator has an air supply port 1a formed at a base end thereof for supplying compressed air and a plurality of nozzle holes 1b... A nozzle 1, an air compressor 2 for supplying compressed air to an air supply port 1a, and a nozzle 1 in each nozzle hole 1b.
A plurality of needle electrodes 3 which are provided every other and generate a corona discharge when an AC voltage is applied;
And an AC high-voltage power supply 4 for applying a voltage to the nozzle holes. In particular, each of the nozzle holes 1b has a diameter such that the flow of air blown out from the nozzle holes 1b becomes laminar. Reference numeral 5 denotes a ground electrode provided on the outer surface of the air nozzle 1.

[0004]

However, if the needle electrode 3 is arranged in the nozzle hole 1b to generate ions,
This disturbs the flow of air in the nozzle hole 1b, attenuates the airflow blown out from the nozzle hole 1b, and has the disadvantage that the static elimination and dust removal performance is reduced. In addition, it is difficult to manufacture with a configuration in which the needle electrodes 3 are disposed in the nozzle holes 1b, respectively.
Therefore, the cost was high and the discharge performance between the needle electrode 3 and the ground electrode 5 was poor.

Further, an air nozzle 1 and an AC high-voltage power supply 4
And the high pressure cable 6 is connected between them, so that the high pressure cable 6 is routed in accordance with the movement of the air nozzle 1, and the high voltage cable 6 itself and the The surroundings may be burned, and the wiring work of the high-voltage cable is complicated.

The present invention provides a static eliminator capable of generating ions without disturbing the flow of air in a nozzle hole, having good discharge performance, and facilitating wiring work without a high-voltage cable. It is an object.

[0007]

According to the present invention, there is provided a static eliminator and dust remover, comprising:
An air nozzle A in which a plurality of air outlets 8 are arranged,
And a casing B fitted and fixed to the outside thereof, and a pair of electrodes 11, in which a plurality of projections 11b..., 13b are respectively arranged on both sides of the plurality of air outlets 8 of the air nozzle A. 13 are arranged to face each other, and a high-voltage power supply 14 for applying a voltage to the pair of electrodes 11 and 13 is mounted on the casing 10.

It is preferable that the pair of electrodes 11 and 13 have a structure in which a projection with a sharp tip is integrally formed on one side edge of the elongated substrate portion. Also, a pair of electrodes 1
1 and 13 are fixed to a casing 10, and the high-voltage power supply 14 is a power supply case 1 provided on a casing B.
The configuration built in 4a is good.

[0009]

Embodiments of the present invention will be described with reference to the drawings. The static eliminator of the present invention is shown in FIGS.
As shown in (1), the air nozzle A includes a static elimination unit B fitted and fixed to the outside of the air nozzle A.

[0010] The air nozzle A is, for example, ABS or PPS.
A base end Aa formed of a resin or the like and having an air supply port 7 through which compressed air is supplied, an intermediate portion Ab formed in a trapezoidal plane following the base end Aa, and a front end Ac formed in a flat rectangular shape. Consists of On the distal end surface of the distal end Ac,
A plurality of air outlets 8 are arranged at equal intervals from each other, and a rectangular rectifying fin Ad protrudes between them. Reference numeral 9 denotes a screw hole for attaching a casing formed on the upper surface.

As shown in FIG. 3, a plurality of nozzle holes 8a from the air supply port 7 to the air outlets 8 are formed in the air nozzle A. For example, an air compressor (not shown) The compressed air supplied to the supply port 7 is diverted through the nozzle holes 8a, and is blown out from the air outlets 8 in a band shape.

As shown in FIGS. 6 to 10, the charge removing unit B includes a casing 10, a first electrode 11, an electrode holding member 12 for holding the first electrode 11, and a second electrode 13.
And a high-voltage power supply 14.

The casing 10 is box-shaped with a base end face 10a and a tip end face 10b opened, and has side walls 10c, 1c.
0c and the upper wall 10d and the lower wall 10e
Is set at a removable interval.

The electrode holding grooves 10f and 10f for holding the second electrode 13 are provided at the lower end portions of the side walls 10c and 10c.
f is formed. In addition, 10 g is a mounting hole formed at a position facing the casing mounting screw hole 9 of the air nozzle A.

In the first electrode 11, a plurality of triangular protrusions 11b are formed at regular intervals on one side edge of a horizontally long substrate portion 11a having the same length as the width between the outer surfaces of the side walls of the casing 10. It is a sawtooth-shaped metal plate.

The electrode holding member 12 is a horizontal rectangular plate, and has an electrode holding groove 12b for holding the substrate portion 11a of the first electrode 11 on one side surface 12a.
Also, the first electrode 11 is provided at one end of the electrode holding member 12.
An insertion portion 12d formed with a play insertion hole 12c for inserting the resistor 15 connected to the projection 15 protrudes from the lower surface side.

The second electrode 13 has substantially the same shape as the first electrode 11, and the substrate portion 13a is
0, and the protrusion 1
1b are formed.

The electrode holding member 1 holding the first electrode 11
2 is attached to the casing 10, and when the second electrode 13 is inserted into the electrode holding grooves 10b, 10b of the casing 10, the first electrode 11 and the second electrode 13 blow air from the air nozzle A. The projections 11b..., 13 of the electrodes 11, 13 are opposed to each other outside the mouth 8.
.. are located so as not to protrude outside from the opening at the end of the casing 10.

The high-voltage power supply 14 includes a high-frequency oscillation circuit, a high-frequency transformer, and a voltage doubler rectifier (not shown) connected to the secondary side of the high-frequency transformer.
a power supply case 14a
Is mounted and fixed to the rear end side of the casing 10. Also,
The two electrodes 11 and 13 are connected to the voltage doubler rectifier circuit.

In the high-voltage power supply 14, a high-frequency voltage is generated on the secondary side of the high-frequency transformer by the oscillation of the high-frequency oscillation circuit. The high-frequency voltage is rectified and amplified by the voltage doubler rectifier circuit. 12 are applied with positive and negative DC high voltages, respectively.

Next, the operation of the static eliminator of the present invention will be described. By an air compressor (not shown)
The compressed air supplied to the air supply port 7 of the air nozzle A is diverted through the nozzle holes 8a.
... is blown out as a uniform belt-like air flow.

Further, a high electric field is formed between the first electrode 11 and the second electrode 13 which are arranged opposite to each other by the high voltage power supply 14, whereby the protrusions 11b, 13b are formed.
Corona discharge occurs between the tips of b, whereby positive and negative ions are generated slightly ahead of the air outlets 7. Therefore, positive and negative ions are generated in the band-shaped air flow blown from the air outlets 8.

The present invention is not limited to the above-described embodiment, and various modifications can be made within the scope of the invention. In the above, the first and second electrodes 11 and 13
As an example, a saw-tooth shape in which a plurality of triangular protrusions are formed on one side edge of a horizontally long substrate portion at regular intervals has been described, but as shown in FIG.
A plurality of needle-like projections 15b may be integrally arranged at a fixed interval on one side edge of the side 5a.

In the above description, a DC power supply is used as a power supply for static elimination, and positive and negative DC high voltages are respectively applied to the first and second electrodes 11 and 13. However, an AC power supply is used as a power supply for static elimination. Alternatively, positive and negative ions may be generated alternately by applying an AC high voltage to one electrode and grounding the other electrode.

Further, the example in which the first electrode and the second electrode are fixed to the casing has been described, but they may be fixed to the air nozzle. Furthermore, although the description has been made on the assumption that the air compressor is used as the air supply source, a blower or the like may be used.

[0026]

According to the first to fourth aspects of the present invention, the first
This electrode is not disposed in the nozzle hole, but is disposed opposite the second electrode outside the air outlet of the nozzle hole, so that the flow of air in the nozzle hole is not disturbed. Therefore, the attenuation of the blown air flow can be reduced, whereby the ions can be sent far away and the dust removing ability can be improved.

Since the high-voltage power supply is mounted on the casing, there is no need to connect the first electrode and the high-voltage power supply with a long high-voltage cable as in the conventional case. Therefore, it is possible to eliminate the high-voltage cable, thereby preventing burnout due to the induction phenomenon as in the related art, and simplifying the wiring work.

Since the first electrode and the second electrode only need to be disposed outside the air nozzle so as to face each other, the production can be performed extremely easily, and the production cost can be reduced.
In addition, the discharge performance can be improved.

In addition to the above-mentioned common effects obtained by the inventions of claims 1 to 4, according to the inventions of the respective claims, the following effects can be obtained. According to the second aspect of the present invention, since the first electrode and the second electrode are each formed with a projection having a sharp tip at one side edge of the elongated substrate portion, a plurality of conventional needles are provided. An electrode equivalent can be integrally formed, thereby making it easy to manufacture and providing an inexpensive one.

According to the third aspect of the present invention, since the first electrode and the second electrode are fixed to the casing, assembly can be performed easily.

According to the fourth aspect of the present invention, since the high-voltage power supply is built in the power supply case provided on the casing, safety can be improved and the air nozzle and the casing can be manufactured separately. Thus, the manufacturing cost can be further reduced.

[Brief description of the drawings]

FIG. 1 is a perspective view of a static eliminator according to the present invention.

FIG. 2 is an exploded perspective view thereof.

FIG. 3 is a plan view of an air nozzle.

FIG. 4 is a front view thereof.

FIG. 5 is a side view thereof.

FIG. 6 is a plan view of the static elimination unit.

FIG. 7 is a front view thereof.

FIG. 8 is a plan view of an electrode holding member.

FIG. 9 is a front view thereof.

10A is a plan view of a first electrode, and FIG.
FIG. 4 is a plan view of a second electrode.

FIG. 11 is a plan view showing another example of the first and second electrodes.

FIG. 12 is a perspective view of a conventional static eliminator and dust remover.

[Explanation of symbols]

 Reference Signs List 8 air outlet 8a nozzle hole 10 casing 11 first electrode 11b protrusion 13 second electrode 13b protrusion 14 high-voltage power supply 14a power supply case A air nozzle B static elimination unit

Claims (4)

(57) [Claims] A static eliminator provided with an air nozzle having a plurality of air outlets arranged in a row and a casing fitted and fixed to the outside of the air nozzle, wherein the air nozzle is provided on both sides of the plurality of air outlets of the air nozzle. And a pair of electrodes each having a plurality of projections arranged in a row facing each other, and a high-voltage power supply for applying a voltage to the pair of electrodes is mounted on the casing. . 2. The static eliminator according to claim 1, wherein each electrode is formed integrally with a projection having a sharp tip at one side edge of the elongated substrate portion. 3. The static eliminator according to claim 1, wherein the pair of electrodes are fixed to the casing. 4. The static eliminator according to claim 1, wherein the high-voltage power supply is incorporated in a power supply case provided on the casing.