Patent ID: 9605916
Date: 2017-03-28
CPC Classifications: B08B,F28G

Claim:
1. A cleaning apparatus for cleaning a cooling tube array of a heat exchanger, comprising: a triangular truss beam supported to be movable in a first direction, which direction is perpendicular to a longitudinal direction of the truss beam, a nozzle carriage movably held on the truss beam, the nozzle carriage being movable along the longitudinal direction of the truss beam, and a plurality of cleaning nozzles mounted to the nozzle carriage, wherein the truss beam comprises two tubular top chords, one tubular bottom chord that is arranged centrally below the top chords, and bracings that connect the chords, wherein the nozzle carriage comprises at least one bottom chord roller that is arranged for traveling on a bottom side of the bottom chord, and wherein the at least one bottom chord roller has a circumferential groove on a circumferential surface thereof which engages a circumferential section of the bottom chord.