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US 2015/0368139 A1Published application
Integral capsule for blister suppression in molten glass
AssigneeCorning Incorporated
InventorsMartin Herbert Goller, David Myron Lineman, Randy Dean Ziegenhagen
Life of this patent
Estimating the term…
Abstract
A precious metal structure which has an internal gas permeable membrane is described herein for a glass manufacturing vessel configured to have molten glass flow therein. The internal gas permeable membrane can be supplied with an atmosphere of gas (or gases) to control the flux of hydrogen into our out of the molten glass or otherwise improve the production of the molten glass. In this manner, the undesirable detrimental reactions that can occur at the interface of the molten glass and precious metal interface which can cause defects in the molten glass such as bubbles or solid inclusions can be stopped or at least substantially reduced.
Claims27
A glass manufacturing vessel configured to have molten glass flow therein, the glass manufacturing vessel comprising:
- an external layer with a first side and a second side;
- an intermediate layer;
- and
- an internal layer with a first side and a second side, where the intermediate layer is positioned between the second side of the external layer and the first side of the internal layer, and where the intermediate layer has a gas permeable structure that permits an atmosphere of gas to pass therein between the second side of the external layer and the first side of the internal layer.
1 more element
A glass manufacturing system comprising:
- a glass manufacturing vessel through which molten glass flows, the glass manufacturing vessel comprises:
- an external layer with a first side and a second side;
- an intermediate layer;
- and
- an internal layer with a first side and a second side, where the intermediate layer is positioned between the second side of the external layer and the first side of the internal layer, and where the intermediate layer has a gas permeable structure that permits an atmosphere of gas to pass therein between the second side of the external layer and the first side of the internal layer;
- and
- a control system that supplies the atmosphere of gas to the intermediate layer of the glass manufacturing vessel.
4 more elements
A glass manufacturing system comprising:
- a melting vessel within which glass batch materials are melted to form molten glass;
- a melting to fining tube which receives the molten glass from the melting vessel;
- a fining vessel which receives the molten glass from the melting to fining tube and removes bubbles from the molten glass;
- a finer to stir chamber tube which receives the molten glass from the fining vessel;
- a stir chamber which receives the molten glass from the finer to stir chamber tube and mixes the molten glass;
- a stir chamber to bowl connecting tube which receives the molten glass from the stir chamber;
- a bowl which receives the molten glass from the stir chamber to bowl connecting tube;
- a downcomer which receives the molten glass from the bowl;
- a fusion draw machine which includes at least an inlet, and a forming vessel where:
- the inlet receives the molten glass from the downcomer;
- the forming apparatus receives the molten glass from the inlet and forms a glass sheet;
- and
- at least one of the melting to fining tube, the fining vessel, the finer to stir chamber tube, the stir chamber, the stir chamber to bowl connecting tube, the bowl, the downcomer, and the inlet further comprises:
- an external layer with a first side and a second side;
- an intermediate layer;
- and
- an internal layer with a first side and a second side, where the intermediate layer is positioned between the second side of the external layer and the first side of the internal layer, and where the intermediate layer has a gas permeable structure that permits an atmosphere of gas to pass therein between the second side of the external layer and the first side of the internal layer;
- and
- a control system that supplies the atmosphere of gas to the intermediate layer of the at least one of the melting to fining tube, the fining vessel, the finer to stir chamber tube, the stir chamber, the stir chamber to bowl connecting tube, the bowl, the downcomer, and the inlet.
16 more elements
A method for fabricating a glass manufacturing vessel configured to have molten glass flow therein, the method comprising the step of:
- laminating an external layer, an intermediate layer, and an internal layer, where the external layer has a first side and a second side and the internal layer has a first side and a second side, where the intermediate layer is positioned between the second side of the external layer and the first side of the internal layer, and where the intermediate layer has a gas permeable structure that permits an atmosphere to pass therein between the second side of the external layer and the first side of the internal layer.
A device configured to be partially inserted into molten glass, the device comprising:
- a section having a first end and a second end, where the first end is not inserted into the molten glass and the second end is inserted into the molten glass;
- a mesh wrapped around at least a portion of the section;
- and
- a cladding wrapped around at least a portion of the mesh, wherein the mesh has a gas permeable structure that permits gas to pass therein between the section and the cladding, and the gas is permitted to exit from the mesh at the first end which is not inserted into the molten glass.
1 more element
A system for manufacturing glass tubing, the system comprising:
- a glass forehearth through which molten glass flows;
- a device configured to be partially inserted into the molten glass within the glass forehearth, the device comprising:
- a section having a first end and a second end, where the first end is not inserted into the molten glass and the second end is inserted into the molten glass;
- a bell attached to the second end and inserted into the molten glass;
- a mesh wrapped around at least a portion of the section;
- and
- a cladding wrapped around at least a portion of the mesh, wherein the mesh has a gas permeable structure that permits gas to pass therein between the section and the cladding, and the gas is permitted to exit from the mesh at the first end which is not inserted into the molten glass;
- and
- the device further configured to have the molten glass flow there around the section which has the mesh and cladding wrapped thereon and the bell before the molten glass exits the glass forehearth to form the glass tubing.
6 more elements
Dependencies are inferred from the claim text.