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:
Jul. 08, 1980
Filed:
Jan. 23, 1978
Wilhelm Kramer, Sandhausen, DE;
BBC Brown Boveri & Company Limited, Baden, CH;
Abstract
An apparatus and a method for producing dry, compressed air to be used for electrical switchgear, especially for high-tension switchgear, is disclosed in which humidity is extracted from the air in a subsequently arranged sorption dryer, with one portion of the dried air being used to regenerate a drying agent of the drying apparatus. The drying apparatus includes a cylindrical inner housing which is used for the pre-drying of the air, an outer housing which surrounds the former in jacket form for the final drying and a desorption volume. An electric heating rod protrudes concentrically into the inner housing and is covered by either a baffle device or a pipe so that a ring-gap is created between two components, with the ring-gap divided into two halves. The air is pre-dried in the first drying chamber prior to its entry into the compressor, with the temperature of the air being kept above the dew point during compression and cooling. The air is then heated prior to a second or final drying process with the remaining moisture being removed during the course of this drying process so that the entire humidity of the air is extracted in the steam phase.