US2495386A - Combustion unit - Google Patents
Combustion unit Download PDFInfo
- Publication number
- US2495386A US2495386A US740245A US74024547A US2495386A US 2495386 A US2495386 A US 2495386A US 740245 A US740245 A US 740245A US 74024547 A US74024547 A US 74024547A US 2495386 A US2495386 A US 2495386A
- Authority
- US
- United States
- Prior art keywords
- combustion
- air
- combustion unit
- combustion chamber
- hemispherical
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 238000002485 combustion reaction Methods 0.000 title description 22
- 239000007789 gas Substances 0.000 description 5
- 238000010276 construction Methods 0.000 description 4
- 239000000446 fuel Substances 0.000 description 4
- 230000003416 augmentation Effects 0.000 description 2
- 241000272190 Falco peregrinus Species 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- FWZLYKYJQSQEPN-SKLAJPBESA-N peregrine Chemical compound OC1[C@H]2[C@@H]3C4([C@@H]5C6OC(C)=O)C(OC)CC[C@@]5(C)CN(CC)[C@H]4C6[C@@]2(OC)C[C@H](OC)[C@H]1C3 FWZLYKYJQSQEPN-SKLAJPBESA-N 0.000 description 1
- FWZLYKYJQSQEPN-UHFFFAOYSA-N peregrine Natural products OC1C2C3C4(C5C6OC(C)=O)C(OC)CCC5(C)CN(CC)C4C6C2(OC)CC(OC)C1C3 FWZLYKYJQSQEPN-UHFFFAOYSA-N 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23R—GENERATING COMBUSTION PRODUCTS OF HIGH PRESSURE OR HIGH VELOCITY, e.g. GAS-TURBINE COMBUSTION CHAMBERS
- F23R3/00—Continuous combustion chambers using liquid or gaseous fuel
- F23R3/42—Continuous combustion chambers using liquid or gaseous fuel characterised by the arrangement or form of the flame tubes or combustion chambers
Definitions
- This invention relates to combustion units such for example as are incorporated in gas turbine and jet propulsion engines or open hearth furnaces.
- One object of the present invention is to provide constructions. ofcombustion unit in which the above pressure loss is reduced.
- a further object of the invention is to provide a combustion system for an open hearth furnace.
- the invention consists in a combustion system incorporating the features set out in the claims appended hereto.
- the pressure augmentation may be achieved by dividing the flow before the last stage of an axial flow compressor of an engine embody- I ing no heat exchanger, this last stage having capacity for the combustion air only.
- a combustion chamber having a hemispherical top a and a hemispherical base b, an
- annular opening 0 being provided between the top and base.
- This annular opening communicates with a mixing annulus d to which one portion of an-air supply is passed from an air supply branch pipe e.
- the other portion of the air supply is conveyed by way of an auxiliary motor-driven fan I from a branch pipe 0 to the top of the combustion chamber which is entered by a series of openings h in the top a, the arrangement being such that the air is directed towards the axis or is ofi-set to give whirl.
- a fuel sprayer t is provided at the centre of the top and the exit gases from the combustion chamberare led away through the annulus c and the discharge pipe d. The remaining air portion arriving from the inlet duct mixes with this combustion air and both are discharged through the duct i.
- the combustion chamber may thus be operated at the maximum possible temperature.
- the pressure augmentation can be obtained from the compressor or any external drive such as a turbine or electric motor, the energy for such being derived from the machine of which being fed to a combustion chamber the interior of which has the form of two hemispherical, or approximately hemispherical members, separated by an annular outlet opening, a fuel sprayer being provided at-one end of the diameter normal to the planecontaining said opening encircled by openings for the admission of said portion of air, the resulting hot gas issuing from said outlet opening being caused to mix witha second portion of the air, which latter portion is not subjected to any substantial pressure drop.
Description
Jan. 24, 1950 E. P. PEREGRINE comsusnon UNIT Filed April 8, 1947 //Vl E/V70/? 5220a P/MA/PJ Pare-400x5- Patented Jan. 24, 1950 COMBUSTION UNIT Edgar Phillips Peregrine, Tynemouth, England,
assignor to The Parsons and Marine Engineering Turbine Research and Development Association, Wallsend, England Application April 8, 1947, Serial No. 740,245
- In Great Britain November 7, 1946 3 Claims. (Cl. 263-19) 1 This invention relates to combustion units such for example as are incorporated in gas turbine and jet propulsion engines or open hearth furnaces.
The proportion of air to fuel in certain combustion units, such as those incorporated in gas turbine and jet propulsion engines, is considerably greater than that required for complete combustion. High combustion efllciencies are attained in combustion zones having high rates of heat release by imparting a high degree of turbulence to the air. This turbulent flow is achieved at the expense of a loss of total pressure, which in turn affects adversely the eiilciency and working capacity of the engine.
One object of the present invention is to provide constructions. ofcombustion unit in which the above pressure loss is reduced. I
A further object of the invention is to provide a combustion system for an open hearth furnace.
The invention consists in a combustion system incorporating the features set out in the claims appended hereto.
2 construction is minimised by maintaining an approximately spherical shape and tile or monolith construction ma conveniently be employed. If desired the pressure augmentation may be achieved by dividing the flow before the last stage of an axial flow compressor of an engine embody- I ing no heat exchanger, this last stage having capacity for the combustion air only.
What is claimed is: 1. A combustion system wherei vided into two portions, one port on, amounting to the quantity necessary to secure complete or substantially complete combustion of the fuel.
The accompanying diagrammatic drawing illustrates a vertical sectional view of one conwenient construction of combustion unit embodying the present invention.
In carrying the invention into eflect according to one convenient form illustrated by way of example in the accompanying drawing, a combustion chamber is provided having a hemispherical top a and a hemispherical base b, an
annular opening 0 being provided between the top and base. This annular opening communicates with a mixing annulus d to which one portion of an-air supply is passed from an air supply branch pipe e. The other portion of the air supply is conveyed by way of an auxiliary motor-driven fan I from a branch pipe 0 to the top of the combustion chamber which is entered by a series of openings h in the top a, the arrangement being such that the air is directed towards the axis or is ofi-set to give whirl. A fuel sprayer t is provided at the centre of the top and the exit gases from the combustion chamberare led away through the annulus c and the discharge pipe d. The remaining air portion arriving from the inlet duct mixes with this combustion air and both are discharged through the duct i.
The combustion chamber may thus be operated at the maximum possible temperature.
The pressure augmentation can be obtained from the compressor or any external drive such as a turbine or electric motor, the energy for such being derived from the machine of which being fed to a combustion chamber the interior of which has the form of two hemispherical, or approximately hemispherical members, separated by an annular outlet opening, a fuel sprayer being provided at-one end of the diameter normal to the planecontaining said opening encircled by openings for the admission of said portion of air, the resulting hot gas issuing from said outlet opening being caused to mix witha second portion of the air, which latter portion is not subjected to any substantial pressure drop.
2. A combustion chamber as claimed in claim 1 wherein the hot gas is discharged in a radial direction from the spherical chamber in such a way as to preserve the symmetry of flow inside the combustion chamber.
3. A combustion system as claimed in claim 1 wherein means is provided for dividing the flow EDGAR PHILLIPS rizamamn. nnrnnsuons orran The following references are of record in the file of this patent:
484,259 Great Britain was, me
the air is di-
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB269896X | 1946-11-07 |
Publications (1)
Publication Number | Publication Date |
---|---|
US2495386A true US2495386A (en) | 1950-01-24 |
Family
ID=10252378
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US740245A Expired - Lifetime US2495386A (en) | 1946-11-07 | 1947-04-08 | Combustion unit |
Country Status (4)
Country | Link |
---|---|
US (1) | US2495386A (en) |
CH (1) | CH269896A (en) |
GB (1) | GB618644A (en) |
NL (1) | NL69961C (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4432727A (en) * | 1982-09-21 | 1984-02-21 | Joseph Fraioli | Gas-fired infrared projection heater |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2812637A (en) * | 1951-12-21 | 1957-11-12 | Phillips Petroleum Co | Fuel air ratio regulation for combustion systems |
DE3238684A1 (en) * | 1982-10-19 | 1984-04-19 | Kraftwerk Union AG, 4330 Mülheim | GAS TURBINE COMBUSTION CHAMBER |
Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1311235A (en) * | 1919-07-29 | Method op and apparatus for producing blasts of heated air | ||
GB484289A (en) * | 1937-02-12 | 1938-05-03 | Bbc Brown Boveri & Cie | Improvements in and relating to internal combustion turbine plants |
US2163762A (en) * | 1936-12-02 | 1939-06-27 | Bbc Brown Boveri & Cie | Heating plant |
US2206553A (en) * | 1939-04-19 | 1940-07-02 | Nagel Theodore | Method of burning fluid fuels |
US2332866A (en) * | 1937-11-18 | 1943-10-26 | Muller Max Adolf | Combustion chamber for gas-flow engines |
US2396952A (en) * | 1944-07-11 | 1946-03-19 | Frank P Huber | Muffler |
US2398654A (en) * | 1940-01-24 | 1946-04-16 | Anglo Saxon Petroleum Co | Combustion burner |
-
0
- NL NL69961D patent/NL69961C/xx active
-
1946
- 1946-11-07 GB GB33091/46A patent/GB618644A/en not_active Expired
-
1947
- 1947-04-08 US US740245A patent/US2495386A/en not_active Expired - Lifetime
- 1947-07-19 CH CH269896D patent/CH269896A/en unknown
Patent Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1311235A (en) * | 1919-07-29 | Method op and apparatus for producing blasts of heated air | ||
US2163762A (en) * | 1936-12-02 | 1939-06-27 | Bbc Brown Boveri & Cie | Heating plant |
GB484289A (en) * | 1937-02-12 | 1938-05-03 | Bbc Brown Boveri & Cie | Improvements in and relating to internal combustion turbine plants |
US2332866A (en) * | 1937-11-18 | 1943-10-26 | Muller Max Adolf | Combustion chamber for gas-flow engines |
US2206553A (en) * | 1939-04-19 | 1940-07-02 | Nagel Theodore | Method of burning fluid fuels |
US2398654A (en) * | 1940-01-24 | 1946-04-16 | Anglo Saxon Petroleum Co | Combustion burner |
US2396952A (en) * | 1944-07-11 | 1946-03-19 | Frank P Huber | Muffler |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4432727A (en) * | 1982-09-21 | 1984-02-21 | Joseph Fraioli | Gas-fired infrared projection heater |
Also Published As
Publication number | Publication date |
---|---|
NL69961C (en) | |
CH269896A (en) | 1950-07-31 |
GB618644A (en) | 1949-02-24 |
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