The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 04, 1983
Filed:
Oct. 29, 1982
Erwin Wanetzky, Gross-Krotzenburg, DE;
Franz Hugo, Aschaffenburg, DE;
Fernand Kuhlmann, Luxemburger Staatsburger, DE;
Leybold-Heraeus GmbH, Cologne, DE;
Abstract
The invention relates to a distillation and sublimation apparatus having a receiving vessel and a number of containers for the starting product. Each container has a bottom, an outer wall and an inner wall with a vapor duct, and the containers are stacked one upon the other in such manner that the vapor ducts are arranged in series. An annular space is present outside the stack of containers. The apparatus comprises a condenser into which the vapor duct of the bottom container discharges. For the purpose of solving the problem of preventing condensation of vapor on the receiving vessel, it is proposed, in accordance with the invention, that capillary gaps (28), which are open towards the receiving vessel (3), be present between the containers (26). Furthermore, the condenser (8) communicates with the annular space (10) by way of at least one return-flow orifice (19) for the gases. The arrangement is such that the annular space (10), the capillary gaps (28), the vapor ducts (26), the condenser (8) and the return-flow orifice or orifices (19) are parts of a closed gas-circulation path.