JP2001351796A - Ion generator - Google Patents

Abstract

PROBLEM TO BE SOLVED: To supply ionized air to each of a plurality of branch flow passages which are branched out from a main flow passage. SOLUTION: An ion generator is provided with a discharge needle and a conductor serving as discharge electrodes individually ionizes air flowing inwardly from an air inflow port, to let it flow outward from an air outflow port. The air outflow port is connected to a branch joint 24, in which the main flow passage 28 and a plurality of branch flow passages 32a, 32b are formed, and they are connected mutually in a crossing part 34. In the crossing part 34, a partition wall 35 protruded toward the main flow passage 28 is arranged, and ionized air inside the main flow passage 28 is fed into the branch flow passages 32a, 32b, after it is previously divided by means of the partition wall 35.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an ion generator for generating ionized air used for removing electricity from various members such as electronic parts.

[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. The members that need to remove or remove 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, and textiles. By supplying ions of opposite polarity to the surface of each member in the state, charging can be neutralized.

[0003] An ion generator has two electrodes arranged in an air flow, and by applying a voltage to these electrodes to generate corona discharge, ionized air can be generated. Since corona discharge generates ions of both positive and negative polarities, it is effective for neutralizing solid members such as electronic components in which positive and negative charges are often mixed in a mosaic shape.

[0004]

The ionized air is guided by a nozzle or a pipe to a member where static elimination is performed. In order to simultaneously supply the ionized air guided by a pipe to a plurality of parts, When the main flow path is branched, ionized air may be supplied to only one of the flow paths, and air may not be supplied to the other of the flow paths.

In order to ensure that the air is supplied to both branch flow paths, it is conceivable to increase the pressure of the air. However, when the pressure is increased, the air is compressed and flows through a flow path such as a pipe. Both positive and negative ions are neutralized in the process,
It becomes impossible to perform static elimination.

It is an object of the present invention to supply ionized air to each of a plurality of branch channels branched from a main channel.

[0007]

According to the present invention, there is provided an ion generator having an ion generator having a discharge electrode and an air supply unit connected to an air inlet of the ion generator for supplying air to the ion generator. And a branch joint having a plurality of branch passages respectively connected to the main flow passage and the main flow passage communicated with the air outlet of the ion generator, and at an intersection of the main flow passage and the branch flow passage. A partition wall that protrudes from the main flow path and divides the main flow path in correspondence with the branch flow path; It is characterized in that ionized air is supplied to the road.

[0008] The ion generator of the present invention is characterized in that the ionized air is in a laminar state in the main flow path. Further, two branch channels are provided in the branch joint, and a T-shaped or Y-shaped channel is formed by the main channel and the two branch channels. I do.

[0009]

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

FIG. 1 is a schematic view showing the entire configuration of an ion generator according to an embodiment of the present invention, FIG. 2 is a cross-sectional view showing a main part thereof, and FIG. It is sectional drawing which follows a line.

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 via an air introduction passage 16, and the fan 17 serves as an air supply unit. 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 air discharged from the main tube flows into the main tube 23 having the main flow path.

A branch joint 24 is attached to the tip of the main tube 23. Two branch tubes 25a and 25b each having a branch flow path are attached to the branch joint 24. .

As shown in FIGS. 2 and 3, the branch joint 24 has a first block 24a on the proximal end side and a second block 24b on the distal end attached to the first block 24a by bolts 26. In the first block 24a, a tube mounting hole 27 into which the main tube 23 is fitted is formed, and a main flow passage 28 communicating with a flow passage in the main tube 23 is formed. The main tube 23 is detachably attached by a screw member which is screwed into a screw hole 29 formed in the first block 24a.

A tube mounting hole 31 into which the branch tubes 25a and 25b are fitted is provided in the second block 24b.
a, 31b are formed, and the branch tubes 25a, 2
Branch flow paths 32a and 32b are formed, which communicate with the flow path in 5b and the main flow path 28, respectively. Each of the branch passages 32a and 32b is inclined at the same inclination angle θ with respect to the center axis of the main passage 28, and a Y-shaped passage is formed in the branch joint 24 by the main passage and the branch passage. ing. Each branch tube 25a, 25
b denotes screw holes 33a, 3b formed in the second block 24b.
3b by a screw member which is screw-connected to 3b
4 so that it can be detachably attached.

The inclination angle θ of each of the branch flow paths 32a and 32b can be set to an arbitrary angle.
When set to 0 degrees, a T-shaped flow path is formed by both flow paths.

A partition wall 35 is attached to an intersection 34 where the main flow passage 28 and the branch flow passages 32a and 32b in the branch joint 24 intersect. It is protruding. In order to attach the plate-shaped partition wall 35 to the branch joint 24, slits 36 are formed in the first block 24a and the second block 24b, respectively. Due to the partition wall 35 protruding into the main flow path 28, the downstream side of the main flow path 28
The ionized air reaching the downstream side of the main flow passage 28 is divided into two in the main flow passage 28 before being divided into two in correspondence with the two branch flow passages 32a, 32b. Will be supplied.

The air discharged from the fan 17 has, for example, a flow rate of 155 liters per minute and a pressure of 0.02 to 0.25 MPa.
a and the main flow path 28 and the branch flow path 3
The ionized air flowing through 2a and 32b is in a laminar flow state.
Thereby, ions of both positive and negative polarities are not neutralized, and the distal end discharge portions 37a,
Discharged from 37b.

When the air flow is branched from the main flow path 28 to the branch flow paths 32a and 32b through the intersection 34, if the pressure in the flow path is increased, the air is branched without providing a partition wall. It is possible to flow, but if the pressure is increased,
Since the ions are neutralized, it becomes impossible to remove the charge of various members.

The main flow path 28 is divided into the branch flow path 32 at the intersection 34 without using the partition wall 35 for laminar air.
a, 32b, as a result of the experiment, the ionized air reaching the main flow path 28 is supplied to only one branch flow path, and the ionized air does not flow at all into the other branch flow path. Although a phenomenon sometimes occurred, as in the present invention, the intersection portion 34 was formed by the partition wall 35.
Before flowing into the main flow path 28, the ionized air in the main flow path 28 is divided in advance, and thereafter, the ionized air is guided to the branch flow paths 32a and 32b. Branch air flow path 32
a and 32b.

In this way, the ionized air is discharged from the distal ends of the branch tubes 25a and 25b 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,
A member such as an operating part of a machine tool or the like, which is required to be neutralized, is sprayed 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 25
As a and 25b, 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. Although the illustrated branch joint 24 branches the main flow path into two branch flow paths, the number of branch flow paths is not limited to two, and the branch flow path branches into an arbitrary number of branch flow paths such as three or four. You may make it do.

[0029]

According to the present invention, the air ionized by the ion generator can be branched into a plurality of branch flow paths by the branch joint, and the ionized air from one ion generator is discharged to a plurality of portions. In this way, various members can be neutralized. The ionized air discharged from each branch channel is not neutralized, and the ionized air can be discharged from each branch channel at substantially the same flow rate.

[Brief description of the drawings]

FIG. 1 is a schematic diagram showing an entire configuration of an ion generator according to an embodiment of the present invention.

FIG. 2 is a cross-sectional view showing a main part of the ion generator shown in FIG.

FIG. 3 is a sectional view taken along line AA in FIG. 2;

[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 (air supply unit) 21 power supply unit 22 nozzle 23 main tube 24 branch joint 25a, 25b branch tube 28 main flow path 32a , 32b Branch flow path 34 Intersection 35 Partition wall 36 Slit

Claims (3)

[Claims] An ion generator having a discharge electrode; an air supply unit connected to an air inlet of the ion generator for supplying air to the ion generator; and an air outlet connected to the ion generator. A main flow path, and a branch joint having a plurality of branch flow paths each communicating with the main flow path; and a main flow path provided at an intersection of the main flow path and the branch flow path so as to protrude from the main flow path. And a partition wall that divides the ionized air in accordance with the branch flow path, and that the ionized air is divided into the main flow path by the partition wall in advance, and then the ionized air is supplied to each branch flow path. Characteristic ion generator. 2. The ion generator according to claim 1, wherein the ionized air is in a laminar flow state in the main flow path. 3. The ion generator according to claim 1, wherein two of said branch flow paths are provided in said branch joint, and said main flow path and said two branch flow paths form a T-shape or Y-shape. An ion generator characterized by forming a U-shaped flow path.