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Method for producing vacuum heat insulation plate for high temperature degasser

A technology for vacuum insulation panels and manufacturing methods, which can be applied to heat preservation, heat exchange equipment, and pipeline protection through heat insulation, and can solve the problems that composite barrier materials are difficult to achieve airtightness, etc.

Active Publication Date: 2007-04-11
FUJIAN SUPERTECH ADVANCED MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to provide a method for manufacturing vacuum insulation panels to solve the problem that the existing composite barrier materials are difficult to achieve airtightness

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] Put the evaporative getter barium aluminum nickel into the glass tube, make a vacuum seal at one end of the glass tube, and then connect it to the exhaust platform. Vacuumize the glass tube filled with evaporative getter, and the internal pressure is lower than 10 -3 At Pa, use a 13.5KHZ.1kw high-frequency induction furnace to heat up to 800°C to activate the evaporative getter and evaporate into a black film. After activating the evaporative getter at high temperature, seal the glass tube away from the exhaust table for standby, put the glass tube with the activated evaporative getter into the interlayer of the VIP board and place it in a vacuum sealing machine for exhaust. When the vacuum degree is less than 1Pa, it is sealed and released from the oven. Pressurize the glass tube on the protruding part of the sealed VIP plate to break it to achieve the purpose of inhalation.

[0026] The amount of the evaporative getter put into the glass tube is determined according...

Embodiment 2

[0044] Similar to Example 1, the difference is that the evaporative getter is barium-titanium evaporative getter, and the heating temperature of the high-frequency induction furnace is 900°C.

Embodiment 3

[0046] Similar to Example 1, the difference is that the evaporative getter is barium thorium evaporative getter, and the heating temperature of the high-frequency induction furnace is 850°C.

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PUM

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Abstract

The present invention relates to vacuum insulating plate (VIP), and is especially production process of VIP with high temperature getter. The production process includes the following steps: setting evaporating getter inside glass tube; forming vacuum sealing port in one end of the glass tube and vacuumizing in a vacuumizing bench, heating to activate the getter after the pressure is lowered to below 10<-3> Pa and evaporating the getter to form black film; sealing the glass tube with activated getter; setting the glass tube with activated getter into VIP, vacuumizing in a vacuum sealing machine and sealing the VIP after the vacuum reach 1 Pa; pressurizing the sealed VIP to break the glass tube for absorbing air. The process is also suitable for non-evaporating getter, and the present invention has greatly lowered cost.

Description

technical field [0001] The invention relates to a vacuum insulation panel (VIP panel), in particular to a production process of the VIP panel using a high-temperature getter. Background technique [0002] In the existing VIP production process, the VIP board is shipped as a finished product after being sealed by the vacuum sealing machine, but the internal vacuum of the sealed VIP board gradually decreases with the passage of time, causing the heat conduction of the VIP board. The coefficient is also constantly rising, which eventually leads to product scrapping. This is because after the VIP board is sealed, the core material inside will continue to release gas. These gases come from the surface adsorption layer of the core material and the barrier material. These adsorbed gases cannot be completely absorbed during the pumping process. It is pumped out, and after the mouth is sealed, it is released slowly due to desorption. On the other hand, the air will gradually penetr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16L59/06
Inventor 汪坤明胡永年
Owner FUJIAN SUPERTECH ADVANCED MATERIAL
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