US 5,989,013 A · Reverberatory screen for a radiant burner

Abstract

The present invention relates to porous mat gas fired radiant burner panels utilizing improved reverberatory screens. The purpose of these screens is to boost the overall radiant output of the burner relative to a burner using no screen and the same fuel-air flow rates. In one embodiment, the reverberatory screen is fabricated from ceramic composite material, which can withstand higher operating temperatures than its metallic equivalent. In another embodiment the reverberatory screen is corrugated. The corrugations add stiffness which helps to resist creep and thermally induced distortions due to temperature or thermal expansion coefficient differences. As an added benefit, it has been unexpectedly discovered that the corrugations further increase the radiant efficiency of the burner. In a preferred embodiment, the reverberatory screen is both corrugated and made from ceramic composite material.

Claims17

Dependent claims

A reverberatory screen for a radiant burner, comprising:

a plurality of ligaments woven together to form an open mesh structure, wherein a ligament comprises at least one ceramic fiber, further wherein a junction or intersection of two or more ligaments defines at least a portion of an opening of said open mesh structure;
a corrugation imposed on said open mesh structure in more than one direction;
a ceramic matrix embedding at least one ligament;
and
at least one debond material disposed between said ligament and said matrix to permit pull-out of said at least one fiber relative to said matrix upon application of fracture stress to said matrix.

2 more elements

Dependencies are inferred from the claim text.

Reverberatory screen for a radiant burner

Life of this patent

Reverberatory screen for a radiant burner

Life of this patent

Abstract

Claims17