JP2002066303A - Branching device for ionized air - Google Patents

Abstract

PROBLEM TO BE SOLVED: To supply ionized air to each of a plurality of branch tubes branches from a main tube. SOLUTION: The ion generator has discharge needles and conductors respectively as discharge electrodes, ionizes the air flowing in from an air inflow port and allows the ionized air to flow out to an air outflow port. The air outflow port admits the ionized air from the main tube through a branch joint 24 to the plurality of branch tubes 25a to 25e and the ionized air is blown to prescribed areas from their spouts 26a to 26e. A guide rod 27 is projected out toward the main tube in the central part of the branch joint 24 and this guide rod 27 is provided with a pointed front end 27. The ionized air guided by the main tube diffuses outward in a diametral direction in the portion of the pointed front end 27a and flows uniformly with each other into the apertures of the respective branch tubes 25a to 25e.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a device for branching ionized air which is used to neutralize various components such as electronic parts and supplies the air to a plurality of sites.

[0002]

2. Description of the Related Art An ion generator is also called an ionizer, and is used to remove static electricity from various members. Materials that need to remove or eliminate static electricity include electronic components such as semiconductor chips, pipes that guide air and liquid, operating parts in machinery such as robots and parts feeders, textile products, and development of negative films. There is a developing device for printing from a negative film to a positive film, and charging can be neutralized by supplying ions of opposite polarity to the surface of each charged member.

[0003] An ion generator has two electrodes arranged in an air stream, and a voltage can be applied to these electrodes to generate corona discharge, thereby generating ionized air. Since corona discharge of the airflow generates ions of both positive and negative polarities, it is effective for static elimination of a solid member such as an electronic component in which positive and negative charges are often mixed in a mosaic shape.

[0004]

The air ionized by the ion generator, that is, air ions or ionized air, is guided by a nozzle or a pipe to a member to be neutralized. When supplying ionized air from a single ion generator to a plurality of sites where static elimination is required, it is necessary to branch the main tube in order to simultaneously supply the ionized air to the plurality of sites. When the ionized air is branched to a plurality of branch tubes connected to the main tube, the ionized air is supplied only to some of the branch tubes, and a branch tube to which the ionized air is not supplied may be generated.

In order to ensure that air is supplied to all the branch tubes, it is conceivable to increase the pressure of the air. However, if the pressure is increased, the air is compressed and flows through a flow path such as a pipe. In this case, both positive and negative ions are neutralized, and it may not be possible to perform static elimination. In addition, it has been found that when the flow of the ionized air is disturbed in the process of guiding the ionized air into each tube, the ionized air is neutralized.

[0006] It is an object of the present invention to supply ionized air to each of a plurality of branch tubes branched from a main tube.

[0007]

SUMMARY OF THE INVENTION According to the present invention, there is provided an ionized air branching device comprising: a main tube connected to an air outlet of an ion generator; and a plurality of branches for branching air which is ionized and guided by the main tube. A branching device for ionizing air having a branch tube, wherein an inlet of each branch tube is opened to the main tube, an inflow end of the branch tube is attached, and the branch tube is connected to the main tube. And a guide rod that projects into the main tube and is fixed to the center of the branch joint and has a sharpened tip.Ionized air flowing through the main tube is guided by the guide rod. It is characterized in that it diffuses and flows into each of the branch tubes.

In the ionizing air branching device according to the present invention, the branch joint has a cylindrical shape, and an inflow end of each of the branch tubes is annularly arranged along an inner peripheral surface of the branch joint. Features.

In the present invention, when the ionized air in the main tube is branched into a plurality of branch tubes at the branch joint portion and flows into the branch tubes, the ionized air is not neutralized and flows into the respective branch tubes. As a result, it flows at a uniform flow rate or flow rate, and ionized air can be blown to a predetermined portion by the branch tube.

[0010]

Embodiments of the present invention will be described below in detail with reference to the drawings.

FIG. 1 is a schematic diagram showing an ion generator provided with a device for branching ionized air according to an embodiment of the present invention, and FIG. 2 is a perspective view showing the branch joint shown in FIG. FIG. 3 is a cross-sectional view of FIG. 2, and FIG. 4 is a cross-sectional view taken along line AA in FIG.

The ionizer body, that is, the ion generator 10
Has a head case 11 which is also called a head portion. The head case 11 has an air inlet 12 and an air outlet 1.
3 are provided. Discharge needles 14 and conductors 15 are provided inside the head case 11, each serving as a discharge electrode.

In order to supply air into the head case 11, a fan 17 is connected to the air inlet 12 through an air introduction passage 16. The air introduction path 16 is provided with a filter 18 for removing foreign substances such as dust in the air supplied into the head case 11.

A power supply unit 21 is connected to each discharge electrode.
And a high frequency voltage of about 3 kV is supplied from the air, and the air flowing in the head case 11 is ionized by corona discharge.

A nozzle 22 made of a conductive material and in contact with the conductor 15 is detachably attached to the head case 11. A conductive main tube 23 is attached to the nozzle 22 and is ionized from the air outlet 13. The discharged air flows into the main tube 23.

A plurality of, in the illustrated case, five branch tubes 25a to 25e are connected to the distal end of the main tube 23 by a branch joint 24, and discharge ports 26a at the distal ends of the respective branch tubes 25a to 25e. ~ 26e
Is applied to a predetermined site.

The branch joint 24 is formed of a cylindrical pipe, and its upstream end is connected to the main tube 23 in a fitted state. The branch joint 24 has respective branch tubes 25a to 25e.
Are attached, and each of the inflow ends is arranged in the branch joint 24 in an annular shape along the inner peripheral surface of the branch joint 24. Main tube 23
The connection between the branch joint 24 and the branch joint 24 may be provided with a flange portion at each connection end, and the flange portions are fastened to each other by a screw member or the like.

The inflow ports of the branch tubes 25a to 25e on the inflow end side are substantially flush with the end surface of the branch joint 24. When the branch joint 24 is connected to the main tube 23, the branch tubes 25a ~
The inlets 25e open to the main tubes 23, respectively. However, each of the inlets may protrude beyond the end face of the branch joint 24 or may be retracted.

A guide rod 27 is fixed to the center of the branch joint 24. The guide rod 27 projects from the branch joint 24 into the main tube 23 as shown in FIG. A pointed portion 27a is formed at a portion of the tip that has entered the main tube 23.
The tip 27a is connected to each of the branch tubes 25a to 25e.
It is on the upstream side of the opening.

In the branch joint 24, between the branch tubes and between the branch tube and the guide rod,
In order to prevent air from leaking from these parts to the outside, it is sealed by a closing member 28.

In the ion generator provided with the branching device having such a configuration, the air discharged from the fan 17 is set, for example, at a flow rate of 155 liters per minute and a pressure of about 0.02 to 0.25 MPa. Have been. The air ionized by the ion generator 10 flows into the main tube 23 from the nozzle 22 and flows therethrough. The ionized air that has reached the downstream end of the main tube 23 is
7, while gradually diffusing outward in the radial direction at the point 27a, flows into the branch tubes 25a to 25e from the respective openings.

As a result, the ionized air flowing as a laminar flow in the main tube 23 flows from the main tube 23 into each of the branch tubes 25a to 25e while maintaining a laminar flow state without forming a turbulent flow. I do. That is, the ionized air flows into the branch tubes 25a to 25e in a laminar flow state, and is applied to the predetermined portion from the discharge ports 26a to 26e as it is. Therefore, the ionized air flowing in the main tube 23 in a laminar flow state is maintained in an ionized state without causing turbulence and being neutralized without increasing the pressure of the ionized air flowing in the main tube 23. However, the ink is discharged from the discharge ports 26a to 26e.

In addition, each branch tube 25a-
From the discharge ports 26a to 26e of 25e, the air in the ionized state is discharged at substantially the same flow rate. Therefore, by discharging ionized air to a plurality of locations by using one ion generator 10, it is possible to remove electricity from the plurality of locations.

The discharged ionized air is used for assembling electronic components, a pipe for guiding a fluid,
Blows are applied to members that need to be neutralized, such as operating parts such as machine tools or developing units, to remove static electricity from these members.

As the ion generator 10, there are a single head case 11 and a plurality of head cases. In any case, the branch joint 24 is attached to the head case 11 and the branch tube is attached to each. You may do it.

Main tube 23 and branch tube 25a
As the materials 25e to 25e, a flexible tube may be used, or a material that does not bend, such as stainless steel, may be used.

The present invention is not limited to the above embodiment, and it goes without saying that various changes can be made without departing from the spirit of the present invention.

For example, although the fan 17 is used as the air supply unit in the illustrated case, a blower having a higher discharge pressure than the fan may be used, or a compressor may be used. When a compressor is used, the supplied air is regulated to a predetermined pressure using a pressure reducing valve or the like. The illustrated branch joint 24 connects the main tube 23 to five branch tubes 25a to 25a.
Although the branch tube is branched to 25e, the number of branch tubes is not limited to five, and may be branched to any number of branch tubes such as three, four, or five or more. Further, instead of forming the branch joint 24 into a cylindrical shape, a polygonal cylindrical body such as a square tube or a pentagonal tube may be used.

[0029]

According to the present invention, the air ionized by the ion generator and guided by the main tube can be branched into a plurality of branch tubes by the branch joint, and each branch tube has a substantially uniform distribution. Diffusion provides ionized air. Accordingly, it is possible to discharge the ionized air from one ion generator to a plurality of portions, thereby performing charge removal of various members. The ionized air discharged from each branch tube is not neutralized, and the ionized air can be discharged from each branch tube at substantially the same flow rate.

[Brief description of the drawings]

FIG. 1 is a schematic diagram showing an ion generator provided with a branching device for ionized air according to an embodiment of the present invention.

FIG. 2 is a perspective view showing a branch joint shown in FIG. 1;

FIG. 3 is a cross-sectional view of FIG.

FIG. 4 is a sectional view taken along line AA in FIG. 3;

[Explanation of symbols]

 Reference Signs List 10 ion generator 11 head case 12 air inlet 13 air outlet 14 discharge needle 15 conductor (electrode) 17 fan 21 power supply unit 22 nozzle 23 main tube 24 branch joint 25a to 25e branch tube 26a to 26e discharge port 27 guide rod 27a Point

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI Theme coat ゛ (Reference) H05F 3/04 F16L 41/02 Z

Claims (2)

[Claims] 1. A branching device for ionized air, comprising: a main tube connected to an air outlet of an ion generator; and a plurality of branch tubes for branching air that is ionized and guided by the main tube, An inflow end of each of the branch tubes is opened to the main tube, an inflow end of the branch tube is attached, and a cylindrical branch joint connected to the main tube; A guide rod fixed at the center of the joint and having a sharpened tip, so that the ionized air flowing in the main tube is guided by the guide rod and diffuses and flows into each of the branch tubes. A branching device for ionized air, characterized in that: 2. The branching device for ionized air according to claim 1, wherein the branch joints have a cylindrical shape, and an inflow end of each of the branch tubes is annularly arranged along an inner peripheral surface of the branch joint. A branching device for ionized air.