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Exhaust pipe-free air-tight sealing method and device for vacuum glass exhaust port

A vacuum glass and hermetic sealing technology, which is applied in the field of airtight sealing of vacuum glass exhaust ports without exhaust pipes, and in the field of airtight joints of vacuum glass exhaust ports without exhaust pipes, achieving low mechanical strength, beautiful exhaust ports, The effect of high vacuum

Inactive Publication Date: 2011-06-15
BEIJING INSTITUTE OF GRAPHIC COMMUNICATION
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In order to overcome the defects of the existing exhaust pipe exhaust sealing process, the present invention proposes a new method and device for making vacuum glass

Method used

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  • Exhaust pipe-free air-tight sealing method and device for vacuum glass exhaust port
  • Exhaust pipe-free air-tight sealing method and device for vacuum glass exhaust port
  • Exhaust pipe-free air-tight sealing method and device for vacuum glass exhaust port

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Experimental program
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Effect test

Embodiment 1

[0031] (1) Cut, edge and clean the original glass plate according to the required size. The original glass plate can be ordinary float glass, tempered glass, various coated glass, self-cleaning glass, low-emissivity glass, high visible light transmittance glass and so on.

[0032] (2) Use a mechanical drill or a laser drilling machine to make an exhaust hole with a diameter of 3mm on a glass plate. This piece of glass is called the front substrate glass. Correspondingly, the other piece of glass is called the rear substrate glass.

[0033] (3) The front glass substrate and the rear glass substrate are stacked face to face, and the edges of the front and rear glass substrates are hermetically sealed with low-melting glass.

[0034] (4) Prepare a rheological slurry suitable for screen printing with non-crystalline low-melting glass powder and organic solution. The sealing temperature of this low-melting glass powder is 30°C lower than that of the low-melting sealing glass that ...

Embodiment 2

[0039] (1) Cut, edge and clean the original glass plate according to the required size. The original glass plate can be ordinary float glass, tempered glass, various coated glass, self-cleaning glass, low-emissivity glass, high visible light transmittance glass and so on.

[0040] (2) Use a mechanical drill or a laser drilling machine to make an exhaust hole with a diameter of 3.5mm on a glass plate. This piece of glass is called the front substrate glass, and the other piece of glass is called the rear substrate glass accordingly.

[0041] (3) The front glass substrate and the rear glass substrate are stacked face to face, and the edges of the front and rear glass substrates are hermetically sealed with low-melting glass.

[0042] (4) Prepare a rheological slurry suitable for screen printing with non-crystalline low-melting glass powder and organic solution. The sealing temperature of the low-melting glass powder is 20°C lower than that of the low-melting sealing glass seali...

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Abstract

The invention discloses an exhaust pipe-free air-tight sealing method and device for a vacuum glass exhaust port. The method comprises the following steps of: preparing low-melting glass powder into printing paste, printing the paste on a wafer with the thickness of 0.2-2 millimeters and diameter of 4-20 millimeters or a (5-20)*(5-20)mm square 4J26 alloy plate by using a screen printing method, and then manufacturing a sealing plate for sealing the exhaust port by sintering, wherein the glass sintering layer is a solid film with the width of 3-15 millimeters and the thickness of 10-40 microns or an annular film with the width of 5 millimeters and the thickness of 10-40 microns. The device is a three-way stainless steel bell jar and is connected with a vacuumizing system, and an ejector rod device with an electric heater is arranged in the bell jar. The method also comprises the following steps of: placing a vacuum glass on a sealing workbench, covering the vacuum glass by using an upper cover with an electric heating and temperature control system, and heating the vacuum glass to the temperature between 200 DEG C and 300 DEG C; placing a 4J26 alloy plate with a low-melting glass sintering layer on the upper surface of an ejector rod, wherein the distance from the top edge of the ejector rod to the exhaust port is 50-300 millimeters; electrically heating the 4J26 alloy plate to the sealing temperature between 350 DEG C and 430 DEG C of the low-melting glass; and after the vacuum degree reaches the requirement, raising the ejector rod to press the exhaust port, and cooling after 0.5-5 minutes to realize exhaust pipe-free air-tight sealing.

Description

Technical field [0001] The invention relates to a method and a device for preparing the airtight sealing of a vacuum glass exhaust port without an exhaust pipe. Vacuum glass refers to the relative placement of two or more pieces of glass with intervals, and a number of small isolation support point arrays are set between the glass pieces. After exhaust sealing, a vacuum is formed between the glass pieces. The airtight cavity provides a transparent material with excellent thermal insulation and sound insulation performance. It is used in various technical fields such as doors and windows of buildings and transportation vehicles, and observation windows of refrigerated appliances. In the manufacturing process of vacuum glass, after the sealing of the periphery of the vacuum glass panel is completed, the air in the gap between the glass sheets needs to be removed and the vacuum state must be maintained. It must be exhausted through the exhaust port to form a vacuum, and then sea...

Claims

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Application Information

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IPC IPC(8): C03B23/24
Inventor 许文才罗世永张新林
Owner BEIJING INSTITUTE OF GRAPHIC COMMUNICATION
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