Soot blower
US5097564A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Sep 4, 1990 |
| Grant date | Mar 24, 1992 |
| Priority date | — |
| Expiry date | Sep 4, 2010 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF28G15/04
- WIPO fieldThermal processes and apparatus
- WIPO sectorMechanical engineering
Abstract
A boiler soot blower provides a lance tube having a pair of opposed nozzles at its end. The lance tube is carried by a carriage for reciprocation between an extended and retracted position, and is caused to rotate about its longitudinal axis in timed relationship to the extension and retraction. A lost motion drive is provided for the rotation of the lance tube so that the nozzles produce a helical first spray pattern of cleaning fluid during extension and a second spray pattern of cleaning fluid during retraction which is offset from the first spray pattern and extends substantially midway between the adjacent portions of the first spray pattern. This results in a composite pattern which provides efficient cleaning.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.