Refractory for heating system

Patent metadata

Field	Value
Publication number	US-10520221-B2
Application number	US-201615091745-A
Country	US
Kind code	B2
Filing date	Apr 6, 2016
Priority date	Apr 6, 2015
Publication date	Dec 31, 2019
Grant date	Dec 31, 2019

Abstract

A refractory panel for a heat exchanger is provided having a body including a first planar surface having a plurality of refractory openings formed therein. A sidewall is arranged about a periphery of at least one of the plurality of refractory openings. The sidewall extends outwardly from the first planar surface and is configured to extend through an adjacent component into an inlet of a heat exchanger coil.

First claim

The invention claimed is:

1. A refractory panel for a burner assembly, comprising:
a body including a first planar surface having a plurality of refractory openings formed therein, wherein each of the plurality of refractory openings is positionable in axial alignment with and downstream from a burner outlet, the body being receivable within an internal cavity of an inner box of the burner assembly such that a surface of the inner box and the first planar surface are in overlapping arrangement; and
a sidewall arranged about a periphery of at least one of the plurality of refractory openings, the sidewall extending outwardly from the first planar surface and being configured to extend through an opening formed in the surface of the inner box and into an inlet of heat exchanger coil when the body is installed within the internal cavity; and
wherein a portion of the sidewall configured to extend into an inlet of the heat exchanger coil bends inwardly towards a center of the opening.

2. The refractory panel according to claim 1 , wherein the at least one sidewall is integrally formed with the first planar surface.

3. The refractory panel according to claim 1 , wherein the body and at least one sidewall are formed via a vacuum molding process.

4. The refractory panel according to claim 1 , wherein a size and shape of the refractory panel is generally complementary to the cavity of the inner box of the burner assembly.

5. The refractory panel according to claim 1 , wherein the geometry of each refractory opening and sidewall is selected to encourage fluid flow towards the heat exchanger inlet.

6. The refractory panel according to claim 1 , wherein the refractory panel is formed from a material configured to withstand a temperature of at least about 2300° F.

7. A furnace comprising:
a heat exchanger including a plurality of coils; and
a burner assembly including:
one or more burners disposed at and substantially aligned with one or more burner openings of the heat exchanger;
a partition plate including one or more partition openings substantially aligned with the one or more burner openings of the heat exchanger;
an inner box including one or more cell openings substantially aligned with the one or more partition openings, wherein an inlet end of one or more of the heat exchanger coils is arranged in contact with a surface of the inner box, the inner box defining a cavity; and
a refractory panel arranged downstream from the one or more burners generally between the partition plate and the inner box, within the cavity of the inner box, the refractory panel including one or more refractory openings substantially axially aligned with the one or more burners, the one or more partition openings, and the one or more cell openings, wherein a sidewall arranged about a periphery of the one or more refractory openings extends through an adjacent cell opening formed in the inner box into a corresponding coil of the plurality of coils, wherein a distal end of the sidewall includes a feature; and
wherein a portion of the sidewall configured to extend into an inlet of the heat exchanger coil bends inwardly towards a center of the opening.

8. The furnace according to claim 7 , wherein the sidewall extends into the inlet end of a heat exchanger coil.

9. The furnace according to claim 7 , wherein the sidewall is integrally formed with a first planar surface of the refractory panel.

10. The furnace according to claim 9 , wherein the refractory panel is formed via a vacuum molding process.

11. The furnace according to claim 7 , wherein the refractory has a size and shape generally complementary to the cavity.

12. The furnace according to claim 7 , wherein a geometry of the one or more refractory openings and sidewalls is selected to encourage fluid flow towards the inlet end of the heat exchanger coils.

13. The furnace according to claim 7 , wherein the refractory panel is formed from a material configured to withstand a temperature of at least about 2300° F.

14. The furnace according to claim 7 , wherein the one or more burners are configured to pre-mix fuel and air before ignition thereof.

Assignees

• Carrier Corp

Inventors

• Shaw Robert
• Garloch Duane D
• Rieke Larry D

Classifications

• F28F2265/10

  for preventing overheating, e.g. heat shields · CPC title

• F28F13/00

  Arrangements for modifying heat-transfer, e.g. increasing, decreasing (F28F1/00 - F28F11/00 take precedence) · CPC title

• F28F2013/001

  Particular heat conductive materials, e.g. superconductive elements · CPC title

• F24H3/06

  the air being kept separate from the heating medium, e.g. using forced circulation of air over radiators · CPC title

• F24H9/2085 Primary

  using fluid fuel · CPC title