US3303993A - Rotary fluid-flow machines - Google Patents

Rotary fluid-flow machines Download PDF

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US3303993A
US3303993A US410461A US41046164A US3303993A US 3303993 A US3303993 A US 3303993A US 410461 A US410461 A US 410461A US 41046164 A US41046164 A US 41046164A US 3303993 A US3303993 A US 3303993A
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Prior art keywords
turbine
casing
vanes
compressor
flow
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US410461A
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Thomas D H Andrews
Spence Peter
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Dowty Technical Developments Ltd
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Dowty Technical Developments Ltd
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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02C—GAS-TURBINE PLANTS; AIR INTAKES FOR JET-PROPULSION PLANTS; CONTROLLING FUEL SUPPLY IN AIR-BREATHING JET-PROPULSION PLANTS
    • F02C6/00—Plural gas-turbine plants; Combinations of gas-turbine plants with other apparatus; Adaptations of gas-turbine plants for special use
    • F02C6/04—Gas-turbine plants providing heated or pressurised working fluid for other apparatus, e.g. without mechanical power output
    • F02C6/10—Gas-turbine plants providing heated or pressurised working fluid for other apparatus, e.g. without mechanical power output supplying working fluid to a user, e.g. a chemical process, which returns working fluid to a turbine of the plant
    • F02C6/12—Turbochargers, i.e. plants for augmenting mechanical power output of internal-combustion piston engines by increase of charge pressure
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
    • F01N3/08—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous
    • F01N3/10—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust
    • F01N3/24—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by constructional aspects of converting apparatus
    • F01N3/30—Arrangements for supply of additional air
    • F01N3/32—Arrangements for supply of additional air using air pump
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02C—GAS-TURBINE PLANTS; AIR INTAKES FOR JET-PROPULSION PLANTS; CONTROLLING FUEL SUPPLY IN AIR-BREATHING JET-PROPULSION PLANTS
    • F02C3/00—Gas-turbine plants characterised by the use of combustion products as the working fluid
    • F02C3/04—Gas-turbine plants characterised by the use of combustion products as the working fluid having a turbine driving a compressor
    • F02C3/045—Gas-turbine plants characterised by the use of combustion products as the working fluid having a turbine driving a compressor having compressor and turbine passages in a single rotor-module
    • F02C3/05—Gas-turbine plants characterised by the use of combustion products as the working fluid having a turbine driving a compressor having compressor and turbine passages in a single rotor-module the compressor and the turbine being of the radial flow type
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D25/00—Pumping installations or systems
    • F04D25/02—Units comprising pumps and their driving means
    • F04D25/04—Units comprising pumps and their driving means the pump being fluid-driven
    • F04D25/045—Units comprising pumps and their driving means the pump being fluid-driven the pump wheel carrying the fluid driving means, e.g. turbine blades
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/10—Internal combustion engine [ICE] based vehicles
    • Y02T10/12—Improving ICE efficiencies

Definitions

  • a rotary fluid-flow machine includes a turbine and compressor, the rotors of which are integrally formed as a single rotatable member, having two separate sets of flow-defining vanes, or the like, the first set being turbine vanes tand the second set being compressor vanes, the casing of the machine in which the member is rotatable being so shaped as to provide an entry to the first set of vanes and also to provide a further entry to the second set of vanes, and the casing being shaped also to provide channels in registry with the exits of both sets of vanes such that the fluids discharged by the compressor and the turbine are mixed together before discharge from the machine through a mixed fluid outlet.
  • the rotatable member may be of centrifugal type and the casing of scroll or annular type, the latter having a central entry to the compressor.
  • the inlet to the turbine and the mixed fluid outlet may be each spaced apart on opposite sides of the central entry.
  • the fluid compressed by the compressor may be air, While the fluid driving the turbine may be exhaust gases derived from the exhaust manifold of an associated internal combustion engine.
  • the fluid flow through the compressor may be generally radially-outwardly, while the fluid flow through the turbine may be generally radially inwardly.
  • the delivery from the compressor passes around the outside of an inner portion of the casing through which the exhaust gases leaving the turbine rotor pass, so that an insulating air envelope is provided around that portion of the casing.
  • the turbine-compressor unit comprises a scroll-type casing 11 formed in two parts 12 and 13.
  • the part 13 of the casing is extended to the right in the drawing to form a sump 14 and to house ball bearings 15 and 16 for rotatably supporting a shaft 17 which projects to the left in the drawing into the part 12 of the casing.
  • the part 12 of the casing has a central entry 18 to the eye of a single rotatable member 19 mounted upon the left-hand end portion of the shaft 17.
  • the single rotatable member 19 constitutes an integral compressor and turbine rotor of centrifugal type having an inner set of vanes 20 which are the compressor vanes which register with the central entry 18, and having also an outer set of vanes 21, which are the turbine vanes, and which register on their inlet side with a ring of stator blades 22.
  • the casing 12 is provided with an inlet 23 through which exhaust gases from the exhaust manifold of an associated internal combustion engine (not shown), can pass into the turbine section of the turbine-compressor unit.
  • the part 12 of the casing 11 is also provided with a mixed gas outlet 26, both the exhaust inlet 23 and the outlet 26 being spaced apart on opposite sides of the central entry 18.
  • the outlet side of the compressor portion 20 of the single rotatable member 19 opens into an envelope chamber 27 formed between the inner annular casing 24 and the adjacent wall of the part 13 of the casing 11.
  • a labyrinth seal 28 is provided to the left of the ball bearing 15 between the shaft .17 and an insert 29 secured to the part 13 of the casing 11.
  • the insert 29 carries a ring of substantially radial stator blades 29a which are positioned on the outlet side of the compressor.
  • a further labyrinth seal 30 is provided between the rotatable member 19 and the part 12 of the casing 11, this seal surrounding the central inlet 18.
  • Another labyrinth seal 31, for gas sealing, is provided in the region between the stator blades 22 and 29a.
  • exhaust gases from the associated internal combustion engine pass through the exhaust inlet 23 and the connecting means 25 into the interior of the casing 24.
  • the gases then pass through the stator blades 22 and through the vanes 21 of the turbine portion of the rotatable member 19, the resultant expansion through the turbine effecting rotation of this member.
  • the exhaust gases discharging from the turbine pass through the annular chamber 32 formed between the casing 24 and the wall of the casing parts 12 and 13.
  • the compressor portion formed by the vanes 20, draws in air from the surrounding atmosphere through the central inlet 18, compressing this air and discharging it radiallyoutwardly through the stator blades 29a into the envelope chamber 27.
  • This air in so passing around the outside of the casing 24, has an insulating effect between the easing 24 and the outer casing components before passing into the chamber 32.
  • the arrangement is such that the exhaust gases discharging from the turbine and the compressed air delivered by the compressor through the envelope chamber 27 mix together efliciently in the annular chamber 32 before passing from the unit through the mixed outlet 26.
  • the casing parts 12 and 13 are connectible together in a number of relative rotational positions to afford adjustment of the positioning of the inlet 23 and the outlet 26 in relation to the sump 14.
  • waste-gate means may be incorporated in the turbine-compressor unit in conjunction with the connecting means 25 to permit some of the exhaust gases to by-pass the turbine when so necessary.
  • Such a turbine-compressor unit may with advantage be employed in the exhaust system of an internal combustion engine for introducing additional air into the exhaust gases upstream of a device for reducing the toxic element content of the exhaust gases passing to atmosphere.
  • the turbine-compressor unit may be utilised for desired and eflicient mixing of any two fluids, where one of the fluids can be supplied under pressure so as to provide the driving energy for the turbine section of the unit.
  • a rotary fluid-flow machine including a turbine and compressor, the rotors of which are integrally formed 'as a single rotatable member of wholly centrifugal type having two separate sets of flow-defining vanes, the first set being turbine vanes and the second set being compressor vanes, the casing of the machine in which the member is rotatable being so shaped as to provide an entry to the first set of vanes and also to provide a further entry to the second set of vances, and the casing being shaped also to provide two separate channels respectively in registry with the exits of the sets of vanes, said separate channels so opening into each other that the fluids discharged by the compressor and the turbine are mixed together downstream of the turbine vanes but before discharge from the machine through a mixed fluid outlet, the said casing having an inner portion through the interior of which the exhaust gases leaving the turbine pass, and around the outside of which the fluid delivered by the compressor passes, so that an insulating air envelope is provided around that portion of the casing.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Combustion & Propulsion (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Health & Medical Sciences (AREA)
  • Toxicology (AREA)
  • General Chemical & Material Sciences (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)

Description

Feb 14, 1957 T. D. H. ANDREWS ETAL 3,303,993
ROTARY FLUID-FLOW MACHINES Filed NOV. 12, 1964 Hill Imvaru-roes THO/7A5 D. AIYDAEWS By PETEA SPEIYCE TQENEY United States Patent 3,303,993 ROTARY FLUID-FLOW MACHINES Thomas D. H. Andrews and Peter Spence, Cheltenham, England, assignors to Dowty Technical Developments Limited, Brockhampton, England, a British company Filed Nov. 12, 1964, Ser. No. 410,461
Claims priority, application Great Britain, Nov. 19, 1963,
3 Claims. (Cl. 230116) This invention relates to rotary fluid-flow machines.
According to this invention, a rotary fluid-flow machine includes a turbine and compressor, the rotors of which are integrally formed as a single rotatable member, having two separate sets of flow-defining vanes, or the like, the first set being turbine vanes tand the second set being compressor vanes, the casing of the machine in which the member is rotatable being so shaped as to provide an entry to the first set of vanes and also to provide a further entry to the second set of vanes, and the casing being shaped also to provide channels in registry with the exits of both sets of vanes such that the fluids discharged by the compressor and the turbine are mixed together before discharge from the machine through a mixed fluid outlet.
The rotatable member may be of centrifugal type and the casing of scroll or annular type, the latter having a central entry to the compressor. The inlet to the turbine and the mixed fluid outlet may be each spaced apart on opposite sides of the central entry.
The fluid compressed by the compressor may be air, While the fluid driving the turbine may be exhaust gases derived from the exhaust manifold of an associated internal combustion engine.
The fluid flow through the compressor may be generally radially-outwardly, while the fluid flow through the turbine may be generally radially inwardly.
It may be so arranged that the delivery from the compressor passes around the outside of an inner portion of the casing through which the exhaust gases leaving the turbine rotor pass, so that an insulating air envelope is provided around that portion of the casing.
One embodiment of the invention will now be particularly described by way of example with reference to the accompanying drawing which shows in cross-section a rotary fluid-flow machine in the form of a turbine-compressor unit.
Referring to the drawing, the turbine-compressor unit comprises a scroll-type casing 11 formed in two parts 12 and 13. The part 13 of the casing is extended to the right in the drawing to form a sump 14 and to house ball bearings 15 and 16 for rotatably supporting a shaft 17 which projects to the left in the drawing into the part 12 of the casing.
The part 12 of the casing has a central entry 18 to the eye of a single rotatable member 19 mounted upon the left-hand end portion of the shaft 17.
The single rotatable member 19 constitutes an integral compressor and turbine rotor of centrifugal type having an inner set of vanes 20 which are the compressor vanes which register with the central entry 18, and having also an outer set of vanes 21, which are the turbine vanes, and which register on their inlet side with a ring of stator blades 22.
The casing 12 is provided with an inlet 23 through which exhaust gases from the exhaust manifold of an associated internal combustion engine (not shown), can pass into the turbine section of the turbine-compressor unit.
The parts 12 and 13 of the casing 11, together form an outer annular casing, but within it there is provided an inner annular casing 24, the inlet 23 being connected to the interior of the casing 24 by connecting means 25.
The part 12 of the casing 11 is also provided with a mixed gas outlet 26, both the exhaust inlet 23 and the outlet 26 being spaced apart on opposite sides of the central entry 18.
The outlet side of the compressor portion 20 of the single rotatable member 19 opens into an envelope chamber 27 formed between the inner annular casing 24 and the adjacent wall of the part 13 of the casing 11.
A labyrinth seal 28 is provided to the left of the ball bearing 15 between the shaft .17 and an insert 29 secured to the part 13 of the casing 11. The insert 29 carries a ring of substantially radial stator blades 29a which are positioned on the outlet side of the compressor. A further labyrinth seal 30 is provided between the rotatable member 19 and the part 12 of the casing 11, this seal surrounding the central inlet 18. Another labyrinth seal 31, for gas sealing, is provided in the region between the stator blades 22 and 29a.
In operation of the turbine-compressor unit, exhaust gases from the associated internal combustion engine pass through the exhaust inlet 23 and the connecting means 25 into the interior of the casing 24. The gases then pass through the stator blades 22 and through the vanes 21 of the turbine portion of the rotatable member 19, the resultant expansion through the turbine effecting rotation of this member. The exhaust gases discharging from the turbine pass through the annular chamber 32 formed between the casing 24 and the wall of the casing parts 12 and 13.
With rotation of the rotatable member 19 the compressor portion, formed by the vanes 20, draws in air from the surrounding atmosphere through the central inlet 18, compressing this air and discharging it radiallyoutwardly through the stator blades 29a into the envelope chamber 27. This air, in so passing around the outside of the casing 24, has an insulating effect between the easing 24 and the outer casing components before passing into the chamber 32. The arrangement is such that the exhaust gases discharging from the turbine and the compressed air delivered by the compressor through the envelope chamber 27 mix together efliciently in the annular chamber 32 before passing from the unit through the mixed outlet 26.
The casing parts 12 and 13 are connectible together in a number of relative rotational positions to afford adjustment of the positioning of the inlet 23 and the outlet 26 in relation to the sump 14.
Further, conventional waste-gate means (not shown) may be incorporated in the turbine-compressor unit in conjunction with the connecting means 25 to permit some of the exhaust gases to by-pass the turbine when so necessary.
Such a turbine-compressor unit may with advantage be employed in the exhaust system of an internal combustion engine for introducing additional air into the exhaust gases upstream of a device for reducing the toxic element content of the exhaust gases passing to atmosphere.
Alternatively, the turbine-compressor unit may be utilised for desired and eflicient mixing of any two fluids, where one of the fluids can be supplied under pressure so as to provide the driving energy for the turbine section of the unit.
By providing the turbine and compressor rotors in the form of a single rotatable member, considerable simplicity in the design of the casing in which the member is rotatably mounted, is achieved.
Although in the embodiment described the com-pressor in generally of the radial-outward flow type and the turbine gene-rally of the radial-inward-flow type, in alternative embodiments of the invention, by suitable modification of the rotor and easing, other flow directions for both turbine and compressor fluid canbe accommodated.
We claim as our invention:
1. A rotary fluid-flow machine including a turbine and compressor, the rotors of which are integrally formed 'as a single rotatable member of wholly centrifugal type having two separate sets of flow-defining vanes, the first set being turbine vanes and the second set being compressor vanes, the casing of the machine in which the member is rotatable being so shaped as to provide an entry to the first set of vanes and also to provide a further entry to the second set of vances, and the casing being shaped also to provide two separate channels respectively in registry with the exits of the sets of vanes, said separate channels so opening into each other that the fluids discharged by the compressor and the turbine are mixed together downstream of the turbine vanes but before discharge from the machine through a mixed fluid outlet, the said casing having an inner portion through the interior of which the exhaust gases leaving the turbine pass, and around the outside of which the fluid delivered by the compressor passes, so that an insulating air envelope is provided around that portion of the casing.
2. A rotary fluid-flow machine as claimed in claim 1,
forms a sump for the machine and houses bearings for supporting the single rotatable member, while the other part includes the entries and the outlet of the machine.
3. A rotary fluid-flow machine as claimed in claim 1, wherein the casing parts are connectible together in a number of relative rotational positions to afiord adjustment of the positioning of the inlet to the turbine and of the mixed fluid outlet in relation to the sump.
References Cited by the Examiner UNITED STATES PATENTS 1,181,780 5/1916 Loewenstein 230-116 1,368,751 2/1921 Rateau 230-116 2,238,502 4/1941 Muir et al.
2,516,822 7/1950 Yates 10387 2,611,241 9/1952 Schulz.
2,873,945 2/1959 Kuhn 230116 FOREIGN PATENTS 148,822 12/1921 Great Britain.
342,409 7/1936 Italy.
ROBERT M. WALKER, Primary Examiner.

Claims (1)

1. A ROTARY FLUID-FLOW MACHINE INCLUDING A TURBINE AND COMPRESSOR, THE ROTORS OF WHICH ARE INTEGRALLY FORMED AS A SINGLE ROTATABLE MEMBER OF WHOLLY CENTRIFUGAL TYYPE HAVING TWO SEPARATE SETS OF FLOW-DEFINING VANES, THE FIRST SET BEING TURBINE VANES AND THE SECOND SET BEING COMPRESSOR VANES, THE CASING OF THE MACHINE IN WHICH THE MEMBER IS ROTATABLE BEING SO SHAPED AS TO PROVIDE AN ENTRY TO THE FIRST SET OF VANES AND ALSO TO PROVIDE A FURTHER ENTRY TO THE SECOND SET OF VANCES, AND THE CASING BEING SHAPED ALSO TO PROVIDE TWO SEPARATE CHANNELS RESPECTIVELY IN REGISTRY WITH THE EXITS OF THE SETS OF VANES, SAID SEPARATE CHANNELS SO OPENING INTO EACH OTHER THAT THE FLUIDS DISCHARGED BY THE COMPRESSOR AND THE TURBINE ARE MIXED TOGETHER DOWNSTREAM OF THE TURBINE VANES BUT BEFORE DISCHARGE FROM THE MACHINE THROUGH A MIXED FLUID OUTLET, THE SAID CASING HAVING AN INNER PORTION THROUGH THE INTERIOR OF WHICH THE EXHAUST GASES LEAVING THE TURBINE PASS, AND AROUND THE OUTSIDE OF WHICH THE FLUID DELIVERED BY THE COMPRESSOR PASSES, SO THAT AN INSULATING AIR ENVELOPE IS PROVIDED AROUND THAT PORTION OF THE CASING.
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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3796046A (en) * 1970-05-02 1974-03-12 Kuehnle Kopp Kausch Ag Process for detoxicating exhaust gases from otto-combustion engines and apparatus for carrying out such process
US3798906A (en) * 1972-05-22 1974-03-26 Wallace Murray Corp Apparatus for reducing pollutants in engine exhaust gases
USRE31259E (en) * 1979-08-24 1983-05-31 Borg-Warner Corporation Two-stage turbo compressor
WO1997000376A1 (en) * 1995-06-19 1997-01-03 Caterpillar Inc. A METHOD FOR TREATING AN EXHAUST GAS STREAM FOR THE REMOVAL OF NOx
US20070154304A1 (en) * 2005-12-29 2007-07-05 Abdallah Shaaban A Fluid transfer controllers having a rotor assembly with multiple sets of rotor blades arranged in proximity and about the same hub component and further having barrier components configured to form passages for routing fluid through the multiple sets of rotor blades
EP4107378A4 (en) * 2020-02-19 2024-03-13 Nathan Geoffrey Andrews A compact turbine-compressor assembly

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1181780A (en) * 1914-04-09 1916-05-02 Gen Electric Apparatus for inducing forced draft in locomotives.
GB148822A (en) * 1913-10-28 1921-01-13 Anme De Turbo Machines Soc A method of propelling vessels by means of steam turbines
US1368751A (en) * 1918-11-29 1921-02-15 Auguste C E Rateau Means for cooling turbine-rotors
US2238502A (en) * 1939-01-16 1941-04-15 Muir Neil Shaw Pumping apparatus
US2516822A (en) * 1946-01-18 1950-07-25 W S Darley & Company Combined turbine and centrifugal booster pump
US2611241A (en) * 1946-03-19 1952-09-23 Packard Motor Car Co Power plant comprising a toroidal combustion chamber and an axial flow gas turbine with blade cooling passages therein forming a centrifugal air compressor
US2873945A (en) * 1952-11-06 1959-02-17 Garrett Corp Radial wheel construction

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB148822A (en) * 1913-10-28 1921-01-13 Anme De Turbo Machines Soc A method of propelling vessels by means of steam turbines
US1181780A (en) * 1914-04-09 1916-05-02 Gen Electric Apparatus for inducing forced draft in locomotives.
US1368751A (en) * 1918-11-29 1921-02-15 Auguste C E Rateau Means for cooling turbine-rotors
US2238502A (en) * 1939-01-16 1941-04-15 Muir Neil Shaw Pumping apparatus
US2516822A (en) * 1946-01-18 1950-07-25 W S Darley & Company Combined turbine and centrifugal booster pump
US2611241A (en) * 1946-03-19 1952-09-23 Packard Motor Car Co Power plant comprising a toroidal combustion chamber and an axial flow gas turbine with blade cooling passages therein forming a centrifugal air compressor
US2873945A (en) * 1952-11-06 1959-02-17 Garrett Corp Radial wheel construction

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3796046A (en) * 1970-05-02 1974-03-12 Kuehnle Kopp Kausch Ag Process for detoxicating exhaust gases from otto-combustion engines and apparatus for carrying out such process
US3798906A (en) * 1972-05-22 1974-03-26 Wallace Murray Corp Apparatus for reducing pollutants in engine exhaust gases
USRE31259E (en) * 1979-08-24 1983-05-31 Borg-Warner Corporation Two-stage turbo compressor
WO1997000376A1 (en) * 1995-06-19 1997-01-03 Caterpillar Inc. A METHOD FOR TREATING AN EXHAUST GAS STREAM FOR THE REMOVAL OF NOx
US5653101A (en) * 1995-06-19 1997-08-05 Caterpillar Inc. Method for treating an exhaust gas stream for the removal on NOx
US20070154304A1 (en) * 2005-12-29 2007-07-05 Abdallah Shaaban A Fluid transfer controllers having a rotor assembly with multiple sets of rotor blades arranged in proximity and about the same hub component and further having barrier components configured to form passages for routing fluid through the multiple sets of rotor blades
WO2007100405A3 (en) * 2005-12-29 2007-12-21 Macro Micro Devices Inc Fluid transfer controllers having a rotor assembly with multiple sets of rotor blades arranged in proximity and about the same hub component and further having barrier components configured to form passages for routing fluid through the multiple sets of rotor blades
US7600961B2 (en) * 2005-12-29 2009-10-13 Macro-Micro Devices, Inc. Fluid transfer controllers having a rotor assembly with multiple sets of rotor blades arranged in proximity and about the same hub component and further having barrier components configured to form passages for routing fluid through the multiple sets of rotor blades
EA014401B1 (en) * 2005-12-29 2010-10-29 Макро-Микро Девисес, Инк. Fluid transfer controllers having a rotor assembly with multiple sets of rotor blades arranged in proximity and about the same hub component and further having barrier components configured to form passages for routing fluid through the multiple sets of rotor blades
EP4107378A4 (en) * 2020-02-19 2024-03-13 Nathan Geoffrey Andrews A compact turbine-compressor assembly

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