×

Impingement cooling plate for a hot gas duct of a thermal machine

  • US 8,272,220 B2
  • Filed: 08/20/2010
  • Issued: 09/25/2012
  • Est. Priority Date: 02/20/2008
  • Status: Active Grant
First Claim
Patent Images

1. A thermal machine comprising:

  • a wall defining a hot gas duct for transferring a hot gas stream;

    a cooling jacket disposed at a distance from the wall on an outside of the hot gas duct so as to define a cooling duct with an inlet and an outlet, the cooling duct configured to conduct a cooling medium along an external face of the wall from the inlet to an outlet in a direction counter to a flow of hot gas in the hot gas duct;

    an impingement cooling plate disposed at the inlet of the cooling duct and including cooling baffle holes and an inflow-side edge, the impingement cooling plate being configured such that cooling medium entering the cooling duct through the cooling baffle holes flows in a direction perpendicular to the wall, and the impingement cooling plate inflow-side edge sealingly abuts the wall of the hot gas duct by means of a seal so as to reduce a transverse flow of the cooling medium through the cooling duct, wherein the impingement cooling plate includes, in succession in the direction counter to the flow of hot gas, an end region, a junction region and a connecting region, wherein the end region is adjacent the inflow-side edge and runs substantially parallel to the wall, the junction region is bent outward in an S shape and includes a plurality of inlets each configured to direct the cooling medium through the impingement cooling plate in a direction parallel to the wall, and the connecting region runs substantially parallel to the wall, wherein each inlet corresponds to an inwardly bent tab in the impingement cooling plate, wherein a baffle is attached to the inwardly bent tab at an orientation that is parallel to the direction of flow through the inlet.

View all claims
  • 2 Assignments
Timeline View
Assignment View
    ×
    ×