JP2007229611A - Steam spray nozzle structure - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a steam spray nozzle removing dust including finger print or human body secrete like sweat causing galvanic corrosion, and providing sufficient satisfactory washing effect. <P>SOLUTION: An inner nozzle 3 is disposed with a spray port 3a facing the inside of an outer nozzle 2, and a gap space part 4 generating a negative pressure is formed between an outer peripheral wall 3b of the inner nozzle 3 and an inner peripheral wall 2c of the outer nozzle 2. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a vapor injection nozzle structure of a cleaning apparatus that performs cleaning by jetting steam, and more particularly to a vapor injection nozzle structure that is suitable for substrate cleaning in a manufacturing process of a liquid crystal display panel.

  Conventionally, a method of wiping with a cotton swab dipped in a solvent has been used to clean the substrate in the manufacturing process of the liquid crystal display panel. However, this method completely removes human secretions such as sweat and saliva. In some cases, the terminal formed in the terminal forming portion is damaged and damaged. Further, when sealing a sealing member for bonding two substrates constituting the liquid crystal display panel, there is a problem that the cotton swab is not delivered and cannot be wiped and washed.

  Therefore, in recent years, a cleaning method has been adopted in which a substrate containing a substrate to be cleaned is sprayed with a solvent-containing vapor to perform non-contact cleaning (see, for example, Patent Document 1).

JP 2004-49405 A

  The conventional method of spraying steam as described above has a high cleaning effect against saliva and silicone contamination, and can be easily cleaned at the time of sealing, but it can completely remove fingerprints, sweat, etc. It was difficult, and a piece of skin remained after washing, and the remaining piece of skin sometimes caused electric corrosion.

  Therefore, the present invention provides a vapor jet nozzle structure that can remove dust containing human secretions such as fingerprints and sweat, which cause electric corrosion, and obtain a sufficiently satisfactory cleaning effect. It is the purpose.

  In order to achieve the above-described object, the steam injection nozzle structure of the present invention is a steam injection nozzle structure for injecting steam onto an object to be cleaned, and an inner nozzle formed with an injection port facing the outer nozzle. A gap space for generating a negative pressure is formed between the outer peripheral wall of the inner nozzle and the inner peripheral wall of the outer nozzle. The inner nozzle and the outer nozzle are preferably concentric cylindrical shapes.

  According to the vapor injection nozzle structure of the present invention, the injection of the outer nozzle is performed by drawing the vapor injected from the injection port of the inner nozzle along the inner peripheral wall of the outer nozzle by the negative pressure generated in the gap space. Without diffusing the steam sprayed from the mouth, it is possible to push it out linearly with acceleration in the direction of the object to be cleaned and to inject it toward the object to be cleaned with a high impact force.

  According to the vapor jet nozzle structure of the present invention configured and operated in this manner, it is possible to remove dust including human secretions such as fingerprints and sweat that are difficult to remove, and to obtain a sufficiently satisfactory cleaning effect. it can.

  In the steam injection nozzle structure of the present invention, an inner nozzle 3 facing a steam injection port 3a is arranged concentrically with the outer nozzle 2 in a cylindrical outer nozzle 2, and the inner nozzle 3 Between the outer peripheral wall 3b and the inner peripheral wall c of the outer nozzle 2, there is formed a gap space portion 4 for generating a negative pressure by the steam injected into the outer nozzle 2 from the injection port 3a of the inner nozzle 3. Yes. By making the inner nozzle 3 and the outer nozzle 2 concentric, the gap space portion 4 becomes uniform in the circumferential direction, and the steam injection force can be further improved.

  FIG. 1 is a cross-sectional view of an essential part for explaining a first embodiment of a steam spray nozzle 1 having a steam spray nozzle structure of the present invention, and FIG. 2 is a cross-sectional view taken along the line II-II in FIG.

  The steam injection nozzle 1 of the present embodiment uses a nozzle disposed at the tip of an air supply hose of a steam production apparatus (not shown) as the inner nozzle 3, and is a cylinder formed detachably with respect to the inner nozzle 3. A shaped attachment is fitted on the outer periphery of the inner nozzle 3 as the outer nozzle 2.

  In the present embodiment, the inner nozzle 3 is formed of, for example, a metal material, and the outer peripheral wall 3b of the portion serving as the injection port 3a is cut out in a cylindrical shape concentric with the inner nozzle 3 so as to have an outward flange. It is the shape in which the part 3d was formed.

  The outer nozzle 2 is formed of, for example, a plastic resin material, and is fitted to the outer periphery of the inner nozzle 3 so that the tip of the inner nozzle 3 is positioned at the center of the outer nozzle 2. It is worn.

  Thereby, the steam injection nozzle 1 of the present embodiment has a double structure having the inner nozzle 3 and the outer nozzle 2, and between the outer peripheral wall 3b of the inner nozzle 3 and the inner peripheral wall 2c of the outer nozzle 2, A gap space portion 4 is formed by the outward flange portion 3d formed in the inner nozzle 2, and has the steam injection nozzle structure of the present invention.

  And according to the vapor injection nozzle 1 of this embodiment, by having the above-mentioned vapor injection nozzle structure, as shown in FIG. 3, the vapor | steam injected from the injection port 3a of the inner nozzle 3 is said gap | interval space part 4. The vapor injected from the injection port 2a of the outer nozzle 2 is diffused immediately after passing through the injection port 2a of the outer nozzle 2 by being drawn along the inner peripheral wall 2c of the outer nozzle 2 by the negative pressure generated in the nozzle 2 Instead, it is possible to extrude linearly with acceleration in the direction of the object to be cleaned and to inject toward the object to be cleaned with a high impact force. In order to extrude the steam more linearly, the inner peripheral wall 2c of the outer nozzle 2 is preferably a smooth surface. This is because laminar flow is likely to occur by reducing the resistance as much as possible.

  By using the steam whose airflow has been adjusted in this way, dust containing human secretions such as fingerprints and sweat, which has been difficult to remove by the conventional steam cleaning method, is removed, and sufficient cleaning can be obtained. An effect can be obtained.

Example:
The inner diameter of the inner nozzle 3 of the steam injection nozzle 1 is φ4 mm (changeable size φ3 to 5 mm), the outer diameter of the injection port 3 a of the inner nozzle 3 is φ5.5 mm (changeable size φ5 to 9 mm), The length of the injection port 3a of the nozzle 3 is 6 mm (changeable size 4 to 8 mm), the outer diameter of the outward flange 3d and the inner diameter of the outer nozzle 2 are 7 mm (changeable size 5 to 9 mm). The tip of the inner nozzle 3 is configured to be positioned on the inner side by about 8 mm (changeable size 5 to 10 mm) from the tip of the outer nozzle 2.

  Then, using the vapor injection nozzle 1, vapor is injected under the conditions that the vapor pressure is 0.3 MPa, the elevation angle with respect to the terminal surface of the liquid crystal display panel as the object to be cleaned is 30 °, and the separation distance is 10 mm. Attempts were made to clean the display panel, and it was possible to remove even dust on the skin pieces remaining in the conventional method, and a sufficiently satisfactory cleaning effect could be obtained.

  Moreover, FIG. 4 is principal part sectional drawing for demonstrating 2nd Embodiment of the steam injection nozzle 1 which has the steam injection nozzle structure of this invention. Hereinafter, only the configuration points different from the vapor injection nozzle 1 of the first embodiment will be described.

  In the steam injection nozzle 1 of the second embodiment, the tip of the inner nozzle 3 is formed of, for example, a metal material, and the portion that becomes the injection port 3a is formed in a cylindrical shape.

  The outer nozzle 2 is formed of, for example, a plastic resin material, and an inward flange portion 2d is formed at the rear end portion of the cylindrical main body. The inner nozzle 3 is fitted on the outer periphery of the inner nozzle 3 with the inner diameter end face of the inward flange portion 2d so that the tip of the inner nozzle 3 is positioned at the center of the outer nozzle 2.

  As a result, the steam injection nozzle 1 of the present embodiment has a double structure having the inner nozzle 3 and the outer nozzle 2, and is between the outer peripheral wall 3 b of the inner nozzle 3 and the inner peripheral wall 2 c of the outer nozzle 2. A gap space portion 4 is formed by the inward flange portion 2d formed in the outer nozzle 2, and has the steam injection nozzle structure of the present invention.

  The steam spray nozzle 1 of the present embodiment also has the steam spray nozzle structure of the present invention, so that, as described above, human secretion such as fingerprints and sweat that was difficult to remove by the conventional steam cleaning method. Dust containing objects can be removed, and a sufficiently satisfactory cleaning effect can be obtained. Also in the present embodiment, the inner peripheral wall 2c of the outer nozzle 2 is preferably a smooth surface on which no groove or the like is formed.

  In the steam injection nozzle 1 having the steam injection nozzle structure of the present invention, the inner nozzle 3 and the outer nozzle 2 can be integrally formed as shown in FIG. 5 (third embodiment).

  In addition, this invention is not limited to embodiment mentioned above, A various change is possible as needed.

  For example, the materials, dimensions, and the like of each member of the steam injection nozzle having the steam injection nozzle structure are not limited to the materials and dimensions described above. Further, the cleaning conditions using the steam injection nozzle having the steam injection nozzle structure of the present invention are not limited to the cleaning conditions of the above-described embodiment.

Cross-sectional view of relevant parts for explaining a first embodiment of a steam spray nozzle having a steam spray nozzle structure of the present invention. II-II sectional view of FIG. Explanatory drawing which shows the steam injection image (action) in the steam injection nozzle which has the steam injection nozzle structure of this invention. Sectional drawing of the principal part explaining 2nd Embodiment of the steam injection nozzle which has the steam injection nozzle structure of this invention. Sectional drawing of the principal part explaining 3rd Embodiment of the steam injection nozzle which has the steam injection nozzle structure of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Steam injection nozzle 2 Outer nozzle 2a (Outside nozzle) Outlet 2c (Outside nozzle) Inner peripheral wall 2d (Outside nozzle inward) Flange part 3 Inner nozzle 3a (Inner nozzle) Outlet 3b (Inside nozzle) Outer peripheral wall 3d (outward of the inner nozzle) flange portion 4 gap space portion

Claims (2)

A steam injection nozzle structure for injecting steam onto an object to be cleaned, wherein an inner nozzle having an injection port facing the outer nozzle is disposed, and an outer peripheral wall of the inner nozzle and an inner peripheral wall of the outer nozzle A steam injection nozzle structure in which a gap space for generating a negative pressure is formed between the two. The steam injection nozzle structure according to claim 1, wherein the inner nozzle and the outer nozzle are both concentric cylindrical shapes.

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