US3847534A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Combustion apparatus
Assignee: Mitsubishi Electric Corp
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Filing: 1972-09-22
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Granted: 1974-11-12
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Expires: 1992-09-22
Abstract
Abstract Combustion apparatus having a combustion plate separating the mixing chamber from the combustion chamber, and a plurality of flow obstacles disposed above some of the flame holes of the combustion plate whereby a mixture of vaporized fuel and combustion air passed through the combustion plate is ignited, the collision of the mixture with the flow obstacles resulting in turbulent flow flame patterns. In addition, a wire net is disposed between the combustion plate and the flow obstacles for further dividing the gas mixture into fine segments, which in conjunction with the flow obstacles, results in stable combustion.
Inventors
- 👤 T Nomaguchi
- 👤 M Sakai
- 👤 T Ito
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 22:17
CPC Classifications
F; F23; F23C; F23C99/00; F23C2700/00; F23C2700/02; F23C2700/026
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
153 words
Combustion apparatus comprising: a mixing chamber for mixing combustion air and vaporized fuel; a combustion chamber for burning said mixture of combustion air and vaporized fuel; a combustion plate, having a plurality of substantially evenly spaced flame holes, disposed between said mixing chamber and said combustion chamber; a wire net supported on said combustion plate on the combustion chamber side thereof; and a plurality of discrete flow obstacles having a lower substantially planar surface, being less in number than the number of said flame holes, and substantially evenly spaced apart in a given plane so as to be disposed above only some of said flame holes of said combustion plate to thereby deflect the flow of said gas mixture which passes through said combustion plate from the flame holes obstructed by said flow obstacles substantially laterally into the flow of said gas mixture from flame holes which are unobstructed by said flow obstacles.
Claim 2
Dependent Claim
153 words
Combustion apparatus comprising: a mixing chamber for mixing combustion air and vaporized fuel; a combustion chamber for burning said mixture of combustion air and vaporized fuel; a combustion plate, having a plurality of substantially evenly spaced flame holes, disposed between said mixing chamber and said combustion chamber; a wire net supported on said combustion plate on the combustion chamber side thereof; and a plurality of discrete flow obstacles having a lower substantially planar surface, being less in number than the number of said flame holes, and substantially evenly spaced apart in a given plane so as to be disposed above only some of said flame holes of said combustion plate to thereby deflect the flow of said gas mixture which passes through said combustion plate from the flame holes obstructed by said flow obstacles substantially laterally into the flow of said gas mixture from flame holes which are unobstructed by said flow obstacles.
Claim 3
Dependent Claim
178 words
Combustion apparatus comprising: a mixing chamber for mixing combustion air and vaporized fuels; a combustion chamber for burning said mixture of combustion air and vaporized fuel; a combustion plate having a plurality of flame holes disposed between said mixing chamber and said combustion chamber; and a plurality of dIscrete flow obstacles disposed above only some of said flame holes of said combustion plate whereby said gas mixture which passes through said combustion plate from flame holes obstructed by said flow obstacles collides with said flow obstacles to be deflected substantially laterally into the flow of said gas mixture from said flame holes which are unobstructed by said flow obstacles, wherein said flame holes comprise a first flame hole passage, open to the rear surface of said combustion plate, having a depth l1 and a diameter d1, and a second flame hole passage, connected to said first flame hole passage, have a depth l2 and a diameter d2 at the front surface of said combustion plate, wherein d2 is substantially equal to l2, d2 > 1.5d1, and l1 2d1.
Claim 4
Dependent Claim
178 words
Combustion apparatus comprising: a mixing chamber for mixing combustion air and vaporized fuels; a combustion chamber for burning said mixture of combustion air and vaporized fuel; a combustion plate having a plurality of flame holes disposed between said mixing chamber and said combustion chamber; and a plurality of dIscrete flow obstacles disposed above only some of said flame holes of said combustion plate whereby said gas mixture which passes through said combustion plate from flame holes obstructed by said flow obstacles collides with said flow obstacles to be deflected substantially laterally into the flow of said gas mixture from said flame holes which are unobstructed by said flow obstacles, wherein said flame holes comprise a first flame hole passage, open to the rear surface of said combustion plate, having a depth l1 and a diameter d1, and a second flame hole passage, connected to said first flame hole passage, have a depth l2 and a diameter d2 at the front surface of said combustion plate, wherein d2 is substantially equal to l2, d2 > 1.5d1, and l1 2d1.
Claim 5
Dependent Claim
18 words
Combustion apparatus as set forth in claim 2, wherein said wire net has a mesh greater than 10.
Claim 6
Dependent Claim
134 words
Combustion apparatus comprising: a mixing chamber for mixing combustion air and vaporized fuel; a combustion chamber for burning said mixture of combustion air and vaporized fuel; a combustion plate, having a plurality of flame holes, disposed between said mixing chamber and said combustion chamber, wherein said flame holes comprise a first flame hole passage, open to the rear surface of said combustion plate, having a depth l1 and a diameter d1, and a second flame hole passage, connected to said first flame hole passage, having a depth l2 and a diameter d2 at the front surface of said combustion plate, wherein d2 is substantially equal to l2, d2 > 1.5 d1, and l1 > or = 2d1; and a wire net disposed above said combustion plate, said net having a mesh greater than 10.
Claim 7
Dependent Claim
134 words
Combustion apparatus comprising: a mixing chamber for mixing combustion air and vaporized fuel; a combustion chamber for burning said mixture of combustion air and vaporized fuel; a combustion plate, having a plurality of flame holes, disposed between said mixing chamber and said combustion chamber, wherein said flame holes comprise a first flame hole passage, open to the rear surface of said combustion plate, having a depth l1 and a diameter d1, and a second flame hole passage, connected to said first flame hole passage, having a depth l2 and a diameter d2 at the front surface of said combustion plate, wherein d2 is substantially equal to l2, d2 > 1.5 d1, and l1 > or = 2d1; and a wire net disposed above said combustion plate, said net having a mesh greater than 10.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-11-11 | 1978-05-13 | 1978-11-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-11-11 | 1982-05-13 | 1982-11-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-11-11 | 1986-05-13 | 1986-11-12 | $7700.00 | Window Closed / Lapsed |