System and method for high frequency accoustic dampers with baffles

A method of manufacturing an acoustic damper for use in a burner, said method comprising:

• defining an outlet through a front panel of the burner, wherein the outlet extends from a front side of the front panel to a back side of the front panel;
• defining at least one cooling air inlet within the back side of the front panel;
• forming at least one wall on the back side of the front panel, wherein the at least one wall and the back side of the front panel define a dampening chamber;
• and
• forming at least one baffle on the back side of the front panel that is oriented to facilitate reducing a velocity of a flow of cooling air within the dampening chamber.

A rotary machine comprising:

• at least one burner comprising a front panel having a front side and an opposing back side;
• and
• at least one acoustic damper positioned on said back side of said front panel, said at least one acoustic damper comprising:
• at least one wall extending from said back side of said front panel such that a dampening chamber is defined by said at least one wall and said front panel;
• at least one cooling air inlet defined within said back side of said front panel, said at least one cooling air inlet oriented to channel a flow of cooling air into said dampening chamber;
• at least one outlet defined within said back side of said front panel, said at least one outlet oriented to channel the flow of cooling air from said dampening chamber;
• and
• at least one baffle extending from said back side of said front panel, said at least one baffle configured to facilitate reducing a velocity of the flow of cooling air within said dampening chamber.