Nozzle for a liquid-cooled plasma cutting torch with grooves
AssigneeHolma AG
InventorManfred Hollberg
Life of this patent
Estimating the term…
Abstract
This application relates to a nozzle (3) for a liquid-cooled plasma cutting torch, having at least one groove (6a) which is arranged on an outer wall (4) of the nozzle (3) with which the liquid makes contact, is oriented with the direction of its longitudinal axis (18) approximately perpendicular to the nozzle mid-axis (17) of the nozzle (3) and reduces the wall thickness (15) of the nozzle (3), at least in this region, and has a groove base (12, 13) that reaches into the wall thickness (15), wherein the groove base (12, 13) of the groove (6a) is formed so as to be approximately parallel to the contour of the inner wall (5) of the nozzle (3).
Claims20
A nozzle for a liquid-cooled plasma cutting torch having numerous, spaced annular grooves disposed on the exterior wall of the nozzle that comes into contact with the liquid, oriented in the direction of the longitudinal axis substantially perpendicular to the central axis of the nozzle, which reduce the wall thickness of the nozzle in at least this region, and in each case have a groove base extending into the wall thickness, wherein the groove bases of the annular grooves are designed to be substantially parallel to the contour of the interior wall of the nozzle, characterized in that numerous spaced longitudinal grooves run in the exterior wall of the nozzle, the groove bases of which are also designed to be substantially parallel to the contour of the interior wall of the nozzle, and the longitudinal grooves have a region having a straight groove base and a region having a sloped groove base at an angle to the central axis of the nozzle, and that the annular grooves, in and of themselves, are closed, and have discontinuation sections.
Dependencies are inferred from the claim text.