Slit nozzle and fast-acting shutoff valve

US4431136A · kind A · utility

Assignee

• Kraftwerk Union Aktiengesellschaft · DE

Inventors

• Karl Janner · Erlangen, DE
• Klaus Gregorius · Copenhagen, DK

Key dates

• Filing date: Mar 12, 1981
• Grant date: Feb 14, 1984
• Expiry date: Mar 12, 2001

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B05C5/0262
• WIPO field: Chemical engineering
• WIPO sector: Chemistry

Abstract

Slit nozzle and fast-acting shutoff valve for producing very brief gas flows accurately reproducible with respect to pulse width and spacing such as are required with pulse laser excitation for separation processes and photochemical processes including a first and a second nozzle part defining a nozzle slit therebetween, the first and the second nozzle parts forming the slit nozzle and, simultaneously, the fast-acting shutoff valve, at least one of the nozzle parts being rapidly movable for varying the width of the nozzle slit practically between zero and a nominal size.