Pressurized air seal for combustion chamber
US5171144A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Sep 9, 1991 |
| Grant date | Dec 15, 1992 |
| Priority date | — |
| Expiry date | Sep 9, 2011 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF23M11/02
- WIPO fieldThermal processes and apparatus
- WIPO sectorMechanical engineering
Abstract
Combustion apparatus (10) includes a combustion chamber (12, 212), a cover (24, 208) covering an end wall (14, 210) of the combustion chamber and defining a buffer space (26, 206) therebetween, and a blower (32, 202) external to the cover and supplying air to the buffer space and pressurizing the buffer space to a higher pressure than the combustion chamber such that leakage at penetrations (46) and/or interface (334, 336) flows from the buffer space into the combustion chamber, rather than the reverse, eliminating the need for leak-tight seals, and instead permitting leakage in a desired direction. In one embodiment, a first conduit (58) supplies air along a path (34) from the blower to the mixer and burner assembly without passing through the buffer space, and a second conduit (60) independently supplies air from the blower to the buffer space. A pressure dropping orifice (36) is provided between the blower and the mixer and burner assembly. A gas inlet port (40) is external to the cover (24) and downstream of the pressure dropping orifice (36). The buffer space (26) communicates with the blower (32) along an air flow path (44) upstream of the pressure dropping orifice (36). In a…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.