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US 9,521,706 B2Granted
Liquid cooled glass melt electrode
AssigneeH.C. Starck GmbH
InventorsJoseph Hirt, John Eiler
Life of this patent
Estimating the term…
Abstract
In various embodiments, an electrode has a shaft extending from an electrode head and a cooling passage extending from an open end disposed at an attachment end of the shaft to a closed end disposed within the electrode head. The electrode head has an approximately teardrop shape with a smoothly rounded outer contour.
Claims26
An electrode for immersion in a molten medium, the electrode comprising:
- an elongated shaft;
- an electrode head (i) having an approximately teardrop shape with a smoothly rounded outer contour, and (ii) being disposed at an end of the shaft opposite an attachment end of the shaft;
- and
- a cooling passage extending from an open end disposed at the attachment end of the shaft to a closed end disposed within the electrode head,
- wherein (i) the outer contour of the electrode head is defined by a radial profile rotated about a centerline of the shaft, (ii) the radial profile has a center disposed at the closed end of the cooling passage and on the centerline of the shaft, (iii) the radial profile exhibits a maximum value at an angle θ from a perpendicular to the centerline of the shaft, and (iv) the maximum value of the radial profile falls within a middle portion of the radial profile extending from an angle of 30° from the perpendicular to the centerline of the shaft to an angle of −30° from the perpendicular to the centerline of the shaft.
2 more elements
An electrode for immersion in a molten medium, the electrode comprising:
- an elongated shaft;
- an electrode head (i) having an approximately teardrop shape with a smoothly rounded outer contour, and (ii) being disposed at an end of the shaft opposite an attachment end of the shaft;
- and
- a cooling passage extending from an open end disposed at the attachment end of the shaft to a closed end disposed within the electrode head,
- wherein (i) the outer contour of the electrode head is defined by a radial profile rotated about a centerline of the shaft, (ii) the radial profile has a center disposed at the closed end of the cooling passage and on the centerline of the shaft, (iii) the radial profile has a middle portion of the radial profile extending from an angle of 30° from the perpendicular to the centerline of the shaft to an angle of −30° from the perpendicular to the centerline of the shaft, and (iv) the middle portion of the radial profile is negatively curved.
2 more elements
Dependencies are inferred from the claim text.