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:
Jan. 16, 1990
Filed:
Jul. 07, 1989
Jiri Jekerle, Baunatal Altenritte, DE;
Jean-Claude Hein, Niddatal, DE;
Schmidt'sche Heissdampf GmbH, Kassel-Bettenhausen, DE;
Abstract
An adaptive control technique, in which the duty cycle of a vibrational cleaning device for the heat exchange surfaces of a steam generator is automatically adapted to the current state of dirt accumulation on the surfaces. To ascertain the degree of dirt accumulation, the number of strokes of the drive cylinder of a fluidic actuator of the vibrational device is measured in a short interval at the beginning of each cleaning cycle and compared with a reference value. The cleaning cycle length or vibration period within the cycle is either lengthened or shortened commensurate with the results of the comparison and in this way the duty cycle of the vibrational device is continuously adapted to the current need for cleaning.