Patent US4236899A successfully refreshed from Google Patents.
US4236899A
Expired / Lapsed
US
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Gas generator for catalytically reacting liquid, hydrocarbon containing fuel to be evaporated with an oxygen containing gas at elevated temperature to form a fuel gas, particularly for supplying internal-combustion engines
Assignee: Siemens AG
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Filing: 1978-09-20
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Granted: 1980-12-02
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Expires: 1998-09-20
Abstract
Abstract A gas generator which comprises a heat resistant housing and a reaction chamber which is centrally arranged therein and contains a catalytic charge, with an inlet opening for the reactants and an outlet opening for the fuel gas is used for catalytically reacting liquid, hydrocarbon containing fuel to be evaporated with an oxygen containing gas at elevated temperature to form a fuel gas. The housing consists of a lower part and a removable cover and the reaction chamber including the catalytic charge is replaceable. The fuel and/or the oxygen containing gas is fed to the reaction chamber for preheating and evaporating, respectively, via a system of tubes which is arranged between the reaction chamber and the lower part of the housing and is run around the reaction chamber in helical fashion.
Inventors
- 👤 Peter Gulden
- 👤 Friedrich Kozdon
- 👤 Eugen S. de Bucs
- 👤 Walter Kusebauch
- 👤 Helmut Forster
- 👤 Mathias Schnicke
- 👤 Heinz Christoph
- 👤 Berthold Pfadenhauer
- 👤 Gerald Edinger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 16:10
CPC Classifications
F; F02; F02M; F02M27/00; F02M27/02; C; C01; C01B; C01B3/00; C01B3/02; C01B3/32; C01B3/34; C01B3/38; C01B3/386; C10; C10G; C10G11/00; C10G11/10; C10G11/20; C10G11/22
Claims Analysis
Total Claims: 32
Claim 1
Independent Claim
242 words
A gas generator for catalytically reacting liquid hydrocarbon containing fuel to be evaporated with a gas containing oxygen at elevated temperatures to form a fuel gas comprising: a. a heat resistant housing including a lower cup-shaped part and a removable lid; b. a replaceable cartridge disposed centrally in said housing spaced from the sides and bottom thereof, comprising: (i) a tubular casing having an open inlet and an open outlet and; (ii) a first plate containing a plurality of holes; (iii) a second plate containing a plurality of holes; (iv) means supporting said first plate at the inlet end of said casing and said second plate at the outlet end of said casing, said plates thereby defining a reaction chamber; and (v) a packed bed of catalyst disposed within said casing between said first and second plates. c. means disposed in said lid adapted to have the reaction media consisting of the liquid hydrocarbon fuel and gas containing oxygen supplied thereto for conducting said reaction media to the inlet end of said tubular casing, said inlet end of said tubular casing being in sealing contact with said means for supplying and forming a mixing chamber at said inlet end; and d. means for removing the fuel gas from said housing whereby, when said catalyst is no longer effective, replacement thereof requires only removing said lid and replacing said cartridge, removal of said cartridge also permitting access to said housing for cleaning thereof.
Claim 2
Dependent Claim
242 words
A gas generator for catalytically reacting liquid hydrocarbon containing fuel to be evaporated with a gas containing oxygen at elevated temperatures to form a fuel gas comprising: a. a heat resistant housing including a lower cup-shaped part and a removable lid; b. a replaceable cartridge disposed centrally in said housing spaced from the sides and bottom thereof, comprising: (i) a tubular casing having an open inlet and an open outlet and; (ii) a first plate containing a plurality of holes; (iii) a second plate containing a plurality of holes; (iv) means supporting said first plate at the inlet end of said casing and said second plate at the outlet end of said casing, said plates thereby defining a reaction chamber; and (v) a packed bed of catalyst disposed within said casing between said first and second plates. c. means disposed in said lid adapted to have the reaction media consisting of the liquid hydrocarbon fuel and gas containing oxygen supplied thereto for conducting said reaction media to the inlet end of said tubular casing, said inlet end of said tubular casing being in sealing contact with said means for supplying and forming a mixing chamber at said inlet end; and d. means for removing the fuel gas from said housing whereby, when said catalyst is no longer effective, replacement thereof requires only removing said lid and replacing said cartridge, removal of said cartridge also permitting access to said housing for cleaning thereof.
Claim 3
Dependent Claim
32 words
The gas generator according to claim 1, and further including additional plates with passage canals embedded in the catalyst packing perpendicular to the axis of said cylinder spaced one behind the other.
Claim 4
Dependent Claim
23 words
The gas generator according to claim 2, wherein said reaction chamber is fabricated of metal and has at least a partial ceramic lining.
Claim 5
Dependent Claim
12 words
The gas generator according to claim 3, wherein said lining contains ribs.
Claim 6
Dependent Claim
18 words
The gas generator according to claim 4, wherein at least one of said plates is a distribution plate.
Claim 7
Dependent Claim
29 words
The gas generator according to claim 5, and further including parts in the lower part of the housing and/or the cover containing depressions engaging parts of the reaction chamber.
Claim 8
Dependent Claim
23 words
The gas generator according to claim 6, wherein said reaction chamber is held fixed by the cover pressure when the cover is closed.
Claim 9
Dependent Claim
25 words
The gas generator according to claim 7, and further including support pieces to hold the reaction chamber spaced from the lower part of the housing.
Claim 10
Dependent Claim
48 words
The gas generator according to claim 8, wherein said support pieces comprise legs which stand perpendicular on the wall or the housing radiating from the outlet opening of the reaction chamber into the spaces between the reaction chamber and the lower part of the housing in starlike fashion.
Claim 11
Dependent Claim
28 words
The gas generator according to claim 8, wherein the part of the housing wall opposite the outlet opening of the reaction chamber, is domed toward the outlet opening.
Claim 12
Dependent Claim
72 words
The gas generator according to claim 10, wherein the lower part of the housing substantially has the shape of a cylindrical cup and further including a cylindrical partition extending from the bottom of the cup up into the vicinity of the cover dividing the space between the side wall of the reaction chamber and the lower part of the housing into an inner and an outer annular chambers surrounding the reaction chamber.
Claim 13
Dependent Claim
28 words
The gas generator according to claim 11, and further including at least one discharge stub for the fuel gas attached to the bottom of the outer annular chamber.
Claim 14
Dependent Claim
29 words
The gas generator according to claim 11, and further including at least one discharge stub extending tangentially out of the outer annular chamber in the vicinity of its bottom.
Claim 15
Dependent Claim
19 words
The gas generator according to claim 11, and further including cooling fins attached to the housing on its outside.
Claim 16
Dependent Claim
24 words
The gas generator according to claim 11, wherein the side wall of the lower part of said housing comprises a section of corrugated pipe.
Claim 17
Dependent Claim
24 words
The gas generator according to claim 15, and further including means stressing said section of corrugated pipe in compression when the cover is closed.
Claim 18
Dependent Claim
86 words
The gas generator according to claim 1 and further including a first system of tubes arranged in the space between the reaction chamber and the lower part of the housing, attached with both its ends to the cover and surrounding the reaction chamber in helical turns, said first system of tubes consisting of a bundle of tubes which run and are connected parallel to each other, for feeding at least one of the hydrocarbon fuel and oxygen containing gas to said means disposed in said lid.
Claim 19
Dependent Claim
18 words
The gas generator according to claim 17, wherein said first tube system is made of metallic corrugated tubing.
Claim 20
Dependent Claim
18 words
The gas generator according to claim 17, and further including spacers supporting the tubes of said tube buindle.
Claim 21
Dependent Claim
16 words
The gas generator according to claim 17, wherein said tubes are bundled by resilient metal clamps.
Claim 22
Dependent Claim
21 words
The gas generator according to claim 17, and further including comb-like mounts having tines holding the turns of said tube bundle.
Claim 23
Dependent Claim
19 words
The gas generator according to claim 17, wherein the tubes in a bundle are twisted relative to each other.
Claim 24
Dependent Claim
23 words
The gas generator according to claim 17, wherein said first tube system is used for feeding the oxygen containing gas, thereby heating it.
Claim 25
Dependent Claim
36 words
The gas generator according to claim 23, and further including a second system of tubes disposed in the space between the reaction chamber and the lower part of the housing for warming up the hydrocarbon fuel.
Claim 26
Dependent Claim
25 words
The gas generator according to claim 24, wherein said first and second systems of tubes open into said mixing chamber to feed the reactants thereto.
Claim 27
Dependent Claim
30 words
The gas generator according to claim 25, and further including a cavity in the cover in which said tubes systems end and passage openings therein leading to the mixing chamber.
Claim 28
Dependent Claim
20 words
The gas generator according to claim 26, wherein said cavity surrounds the mixing chamber in the form of a ring.
Claim 29
Dependent Claim
23 words
The gas generator according to claim 27, and further including baffles to conduct the reactants tangentially from said cavity into the mixing chamber.
Claim 30
Dependent Claim
25 words
The gas generator according to claim 25, wherein said mixing chamber is formed by parts of the cover and the boundardy of the reaction chamber.
Claim 31
Dependent Claim
42 words
The gas generator according to claim 25, and further including a starting device for burning fuel arranged at the cover of the housing and coupled thereto such that the hot gases produced by combustion therein can be fed into the mixing chamber.
Claim 32
Dependent Claim
36 words
The gas generator according to claim 1, wherein the lower part of the housing substantially has the shape of a cylindrical cup, the diameter of which is larger than or approximately equal to twice its height.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1983-12-02 | 1984-06-02 | 1984-12-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-12-02 | 1988-06-02 | 1988-12-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-12-02 | 1992-06-02 | 1992-12-02 | $7700.00 | Window Closed / Lapsed |