US3765824A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for determining air flow to a gas burner
Assignee: Foster Wheeler Inc
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Filing: 1972-08-02
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Granted: 1973-10-16
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Expires: 1992-08-02
Abstract
Abstract An apparatus for determining air flow to one or more burners of a furnace or the like wherein an enclosure is provided which surrounds the burners and receives air for supply to the burners. A register assembly is provided in the enclosure and cooperates with the burners to direct a predetermined portion of the air to a combustion zone adjacent each of the burners. A static pressure zone is created for the latter portion of air to enable its static pressure to be measured and the air flow to be determined.
Inventors
- 👤 N Trozzi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 17:42
CPC Classifications
F; F23; F23C; F23C7/00; F23C7/008; F23D; F23D17/00
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
97 words
Apparatus for determining air flow to one or more burners of a furnace or the like, said apparatus comprising an enclosure surrounding said burner, means for introducing air at a predetermined velocity to said enclosure, register means disposed in said enclosure and cooperating with said burner for directing a predetermined portion of said air to a combustion zone adjacent each of said burners, means for creating a static pressure zone for said predetermined portion of air, means for measuring the air pressure in said static pressure zone, and means for measuring the air pressure in said enclosure.
Claim 2
Dependent Claim
97 words
Apparatus for determining air flow to one or more burners of a furnace or the like, said apparatus comprising an enclosure surrounding said burner, means for introducing air at a predetermined velocity to said enclosure, register means disposed in said enclosure and cooperating with said burner for directing a predetermined portion of said air to a combustion zone adjacent each of said burners, means for creating a static pressure zone for said predetermined portion of air, means for measuring the air pressure in said static pressure zone, and means for measuring the air pressure in said enclosure.
Claim 3
Dependent Claim
34 words
The apparatus of claim 1 wherein said furnace forms a portion of a vapor generator, a plurality of said burners being mounted adjacent port openings provided along a heat absorption wall of said generator.
Claim 4
Dependent Claim
50 words
The apparatus of claim 1 wherein said means for creating a static pressure zone comprises a perforated plate mounted relative to said register means in a spaced relation relative to the inlet portion of said register means, and a perforated tubular member mounted between said perforated plate and said inlet.
Claim 5
Dependent Claim
39 words
The apparatus of claim 3 wherein said perforated plate forms a portion of a hood surrounding said register means, said tubular member extending across said hood in the path of air flow from said perforated plate to said inlet.
Claim 6
Dependent Claim
24 words
The apparatus of claim 3 wherein said means for measuring the air pressure in said static pressure zone is connected to said tubular member.
Claim 7
Dependent Claim
47 words
The apparatus of claim 1 wherein said register means is in the form of an annular housing surrounding each of said burners and having adjustable openings in the outer periphery thereof to direct said predetermined portion of air in a generally radial direction relative to said burner.
Claim 8
Dependent Claim
40 words
The apparatus of claim 6 further comprising an annular hood extending over said register means, the outer wall of said hood being perforated to permit said predetermined portion of air to pass therethrough into the inlet of said register means.
Claim 9
Dependent Claim
50 words
The apparatus of claim 7 wherein said means for measuring the air pressure in said static pressure zone comprises a perforated tubular member mounted relative to said hood and extending across said hood between said perforated plate and said inlet to receive a portion of said predetermined portion of air.
References Cited (Backward Citations)
US3486834A
Cited
US3700376A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-10-15 | 1977-04-16 | 1977-10-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-10-15 | 1981-04-16 | 1981-10-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-10-15 | 1985-04-16 | 1985-10-16 | $7700.00 | Window Closed / Lapsed |