Gas burner and aeration pan assembly

• US 3,877,865 A
• Filed: 05/02/1974
• Issued: 04/15/1975
• Est. Priority Date: 11/16/1972
• Status: Expired due to Term

• Current Assignee: Donald E. Duperow
• Original Assignee: Donald E. Duperow
• Inventors: Duperow, Donald E.
• Primary Examiner(s): Camby, John J.
• Assistant Examiner(s): Yeung, James C.
• Application Number:
  US05/466,144
• Time in Patent Office: 348 Days
• Field of Search: 431/354,10,349 239/568,567,601 126/214A,214C,39H,39I,39K,214R
• US Class Current: 431/349
• CPC Class Codes: F24C 3/085 on ranges

Abstract

Secondary air opening between a gas burner and aeration pan is smaller than conventional. The bottom of the pan extends upwardly toward the burner at a slope directed toward the burner port bases to guide supplemental secondary air drawn into the pan through openings in its side wall.

Claims

1. In an assembly of a gas burner disposed within a central opening in an aeration pan, the opening having a diameter greater than that of the burner to provide a clearancE through which a flow of secondary air is furnished to the burner ports, the pan having a bottom with portions proximal to the burner which define said opening and portions distal of the burner which adjoin a generally vertical side wall, improved structure wherein, said clearance is smaller than that required to pass adequate secondary air to the burner ports under at least certain conditions of operation of the burner, said pan bottom extending upwardly from said distal portions to said proximal portions along a slope directed toward the burner ports, said side wall being provided with aperture means above the level of said distal portions to admit a supplementary flow of secondary air into said aeration pan, said sloped bottom being positioned and contoured to guide said supplementary secondary air upwardly and inwardly for delivery to flames issuing from said burner ports, said flow through said clearance and said supplementary flow being cooperable to provide adequate secondary air to said burner ports under substantially all conditions of operation of said burner.

2. The structure defined in claim 1 wherein said opening has a diameter greater than that of said burner by about 1/4 inch to about 1/2 inch.

3. The structure defined in claim 1 wherein said opening has a diameter of the order of about 1/4 inch greater than that of said burner, said pan bottom and burner having means interengageable to maintain said burner in substantially centered relation within said opening.

4. The structure defined in claim 3 wherein said interengageable means comprises a plurality of tabs on said pan bottom projecting radially inwardly from said proximal portions and being engageable against side portions of said burner.

5. The structure defined in claim 1 wherein said side wall has a plurality of apertures distributed equally around the periphery of said side wall.

6. The structure defined in claim 5 wherein said apertures comprise circumferential slots extending around the major portion of said periphery.

7. The structure defined in claim 6 wherein said pan bottom has a plurality of tabs projecting radially inwardly from said proximal portions and positioned for engagement against side portions of said burner to maintain said burner in substantially centered relation within said opening.

8. The structure defined in claim 7 wherein said opening has a diameter of about 1/4 inch greater than that of said burner.