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US 8,985,999 B2Granted
Fuel/air furnace mixer
AssigneeTrane International Inc.
InventorsLester D. Sherrow, Jeffery Wayne O'Daniel, Deepak Veettil, Wayne Kraft
Life of this patent
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Abstract
A heating, ventilation, and/or air conditioning (HVAC) furnace has a venturi premixer and a disturber disposed downstream relative to the premixer and in an undivided output of the venturi premixer.
Claims17
A heating, ventilation, and/or air conditioning (HVAC) furnace, comprising:
- a venturi premixer;
- a disturber disposed downstream relative to the venturi premixer and in an undivided output of the venturi premixer.
- a post-combustion chamber disposed downstream of the disturber and in fluid communication with the venture premixer, wherein the post-combustion chamber is configured to divide a single flowpath entering the post-combustion chamber into a plurality of parallel flowpaths exiting the post-combustion chamber;
- and
- a burner disposed downstream relative to the disturber;
- wherein the disturber comprises a longitudinal member configured to generally bisect the output of the venture premixer.
3 more elements
A receiving tube for a furnace, comprising:
- a flowspace disposed within the receiving tube;
- and
- a disturber at least partially disposed within the flowspace, the disturber comprising a longitudinal member that extends radially across the flowspace to substantially bisect the flowspace;
- wherein the flowspace is configured to be at least one of (1) directly connected to an output of a venturi premixer and (2) substantially enveloping an output of a venture premixer;
- wherein the receiving tube is configured to allow passage of fluid therethrough in an undivided flowpath;
- wherein the disturber is located upstream relative to a burner associated with the receiving tube;
- and
- wherein the disturber is located upstream of a post-combustion chamber that is configured to divide the undivided flowpath into a plurality of parallel flowpaths.
5 more elements
A method of operating a heating, ventilation, and/or air conditioning (HVAC) furnace, comprising:
- mixing air and fuel using a venturi to generate an air-fuel mixture;
- outputting the air-fuel mixture from the venturi into a receiving tube along an undivided flowpath;
- disturbing the air-fuel mixture using a disturber disposed within the interior of the receiving tube,wherein the disturbing comprises bisecting the air-fuel mixture prior to combustion of the air-fuel mixture;
- and
- outputting the disturbed air-fuel mixture from the venturi along the undivided flowpath.
2 more elements
Dependencies are inferred from the claim text.