EP 1582836 A1 20051005 - Sootblower with single traveling limit switch utilizing state logic controls

Title (en)

Sootblower with single traveling limit switch utilizing state logic controls

Title (de)

Russbläser mit einem reisenden Schalter mit Kontroler

Title (fr)

Souffleur de suie avec interrupteur navettant et contrôleur

Publication

EP 1582836 A1 20051005 (EN)

Application

EP 05004051 A 20050224

Priority

US 81280704 A 20040330

Abstract (en)

The present invention provides a system for controlling a retractable sootblower having a frame, a movable carriage, a limit switch mounted on the movable carriage, a first switch control device, and a second switch control device. The frame supports the movable carriage, allowing the movable carriage to move between an extended and retracted position. The limit switch is mounted on the carriage and configured to sense both the first switch control device and the second switch control device. The first switch control device is positioned such that the limit switch will sense the first switch control device when the carriage is in the extended position. The second switch control device is positioned such that the limit switch will sense the second switch control device when the carriage is in the retracted position. The sootblower also includes a motor for driving the movable carriage between the extended and retracted positions, and a controller electrically coupled to the limit switch and configured to reverse the motor travel in response to the limit switch sensing the first switch control device.

IPC 1-7

F28G 1/16; F28G 15/06

IPC 8 full level

F28G 1/16 (2006.01); F28G 15/06 (2006.01)

CPC (source: EP US)

F28G 1/16 (2013.01 - EP US); F28G 15/06 (2013.01 - EP US)

Citation (search report)

[X] US 5778830 A 19980714 - WALL H DAVIS [US]
[A] WO 0151852 A1 20010719 - DIAMOND POWER INT INC [US], et al
[A] US 5040262 A 19910820 - ALBERS KARL [DE], et al
[A] US 5416946 A 19950523 - BROWN CLINTON A [US], et al
[A] US 4646768 A 19870303 - TANAKA YUKIO [JP], et al
[A] EP 0590930 A2 19940406 - BABCOCK & WILCOX CO [US]

Designated contracting state (EPC)

AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU MC NL PL PT RO SE SI SK TR

DOCDB simple family (publication)

EP 1582836 A1 20051005; CA 2498487 A1 20050930; US 2005217060 A1 20051006

DOCDB simple family (application)

EP 05004051 A 20050224; CA 2498487 A 20050225; US 81280704 A 20040330