Air intake coupling with noise suppression for low NOx emission furnace
US11162677B2 · kind B2 · utility
0Cited by
12References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 18, 2019 |
| Grant date | Nov 2, 2021 |
| Priority date | — |
| Expiry date | Jan 18, 2039 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF23D2210/00
- WIPO fieldThermal processes and apparatus
- WIPO sectorMechanical engineering
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.