Back to results
US 2022/0018535 A1Published application
AIR INTAKE COUPLING WITH NOISE SUPPRESSION FOR LOW NOx EMISSION FURNACE
AssigneeLennox Industries Inc.
InventorsLeonor BEAKLEY, Darcy Q. EASTERLING
Life of this patent
Estimating the term…
Abstract
An air intake coupling has at least one noise suppression hole formed therein. A gas-air mixer elbow is fluidly coupled to the air intake coupling. A burner box assembly is fluidly coupled to the gas-air mixer elbow via a gas-air plenum box. A heat-exchange tube has a first end that is fluidly coupled to the burner box assembly. A fan is fluidly coupled to a second end of the heat-exchange tube via a cold-end header box.
Claims20
An air intake coupling comprising:
- a first tubular section;
- a second tubular section fluidly coupled to the first tubular section;
- a pressure tap formed in the first tubular section;
- and
- at least one noise suppression hole formed in the second tubular section.
2 more elements
An air intake coupling comprising:
- a first tubular section;
- a second tubular section fluidly coupled to the first tubular section;
- a pressure tap formed in the first tubular section;
- at least one noise suppression hole formed in the second tubular section;
- and
- a flange formed on an end of the first tubular section on a side opposite the second tubular section for facilitating assembly of the air intake coupling to a fresh-air intake.
3 more elements
An air intake coupling comprising:
- a first tubular section;
- a second tubular section fluidly coupled to the first tubular section;
- a pressure tap formed in the first tubular section;
- at least one noise suppression hole formed in the second tubular section;
- and
- a pressure tap formed in the first tubular section, wherein the at least one noise suppression hole is in line with the pressure tap.
3 more elements
Dependencies are inferred from the claim text.