Fuel-fired heating appliance with louvered combustion chamber flame arrestor plate
US6422178B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 12, 2001 |
| Grant date | Jul 23, 2002 |
| Priority date | — |
| Expiry date | Jul 12, 2021 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF24H1/205
- WIPO fieldThermal processes and apparatus
- WIPO sectorMechanical engineering
Abstract
A fuel-fired heating appliance, representatively a gas-fired water heater, has a combustion chamber with an outer wall portion defined by a perforated flame arrestor plate having specially configured louvered combustion air intake openings through which combustion air is flowed into the combustion chamber. The louvered openings function to cause the entering combustion air to undergo directional changes as it inwardly traverses the openings and impart turbulence to the air entering the combustion chamber in a manner substantially inhibiting foreign matter blockage of the plate openings, providing an even combustion air inflow across the perforated plate area, and providing the plate with improved operational temperature uniformity along its sides.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.