US20120020776A1 - Variable diffuser actuation linkage for a cabin air compressor - Google Patents
Variable diffuser actuation linkage for a cabin air compressor Download PDFInfo
- Publication number
- US20120020776A1 US20120020776A1 US12/843,816 US84381610A US2012020776A1 US 20120020776 A1 US20120020776 A1 US 20120020776A1 US 84381610 A US84381610 A US 84381610A US 2012020776 A1 US2012020776 A1 US 2012020776A1
- Authority
- US
- United States
- Prior art keywords
- drive ring
- centerline
- diffuser
- crank
- recited
- 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.)
- Abandoned
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/40—Casings; Connections of working fluid
- F04D29/42—Casings; Connections of working fluid for radial or helico-centrifugal pumps
- F04D29/44—Fluid-guiding means, e.g. diffusers
- F04D29/46—Fluid-guiding means, e.g. diffusers adjustable
- F04D29/462—Fluid-guiding means, e.g. diffusers adjustable especially adapted for elastic fluid pumps
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/40—Casings; Connections of working fluid
- F04D29/42—Casings; Connections of working fluid for radial or helico-centrifugal pumps
- F04D29/44—Fluid-guiding means, e.g. diffusers
- F04D29/441—Fluid-guiding means, e.g. diffusers especially adapted for elastic fluid pumps
- F04D29/444—Bladed diffusers
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
- F05D2220/00—Application
- F05D2220/50—Application for auxiliary power units (APU's)
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
- F05D2260/00—Function
- F05D2260/50—Kinematic linkage, i.e. transmission of position
- F05D2260/56—Kinematic linkage, i.e. transmission of position using cams or eccentrics
Definitions
- the present disclosure relates to a cabin air compressor, and more particularly to a variable diffuser therefor.
- Environmental control systems for more electric aircraft may use a dedicated compressor to pressurize ambient air for use as fresh air in the cabin.
- the compressor may, for example, be a single stage centrifugal configuration driven by a variable speed permanent magnet motor.
- a variable diffuser includes a drive ring that rotates about the compressor centerline. Rotation of the drive ring moves a series of diffuser vanes in unison between a maximum and minimum flow position.
- a variable diffuser for a rotating machine includes a multiple of diffuser vanes engaged with a drive ring.
- the multiple of diffuser vanes are movable in unison between a maximum flow position and a minimum flow position in response to rotation of a crank to rotate the drive ring about a centerline through a link arm.
- a rotating machine includes a compressor drivable by an electric motor about a centerline.
- a variable diffuser downstream of the compressor.
- a multiple of diffuser vanes engaged with a drive ring. The multiple of diffuser vanes movable in unison between a maximum flow position and a minimum flow position in response to rotation of a crank to rotate the drive ring about a centerline through a link arm.
- FIG. 1 is a schematic view of a Cabin Air Compressor (CAC);
- FIG. 2 is a perspective view of a variable diffuser of the Cabin Air Compressor (CAC);
- FIG. 3 is an expanded view of the variable diffuser of FIG. 2 in a maximum flow position
- FIG. 4 is an expanded view of the variable diffuser of FIG. 2 in a minimum flow position
- FIG. 5 is a perspective view of a linkage operable to position the variable diffuser between the maximum and minimum flow position.
- FIG. 1 schematically illustrates a Cabin Air Compressor (CAC) 20 that may be used to pressurize ambient air to provide fresh air in an aircraft cabin.
- CAC Cabin Air Compressor
- the CAC 20 generally includes an electric motor 22 , a compressor 24 , a variable diffuser 26 and a diffuser actuator 28 .
- the electric motor 22 , the compressor 24 and the variable diffuser 26 are defined about a centerline A of the CAC 20 .
- An inlet 30 communicates air into the CAC 20 where the air is compressed by the motor 22 driven compressor 24 then communicated from an outlet 32 through the variable diffuser 26 .
- the variable diffuser 26 includes a multiple of diffuser vanes 34 ( FIG. 2 ) which are moved in unison by the diffuser actuator 28 between a maximum flow position ( FIG. 3 ) and minimum flow position ( FIG. 4 ) to control the airflow of the CAC 20 responsive to control 29 .
- variable diffuser 26 includes a drive ring 36 that is rotatable about the centerline A.
- a series of drive pins 38 extends from the drive ring 36 to engage each respective diffuser vane 34 .
- Each respective diffuser vane 34 pivots about a vane pin 40 ( FIGS. 3 and 4 ) which is displaced from each of the respective drive pins 38 .
- Rotation of the drive ring 36 moves the diffuser vanes 34 in unison between the maximum and minimum flow position about the respective vane pins 40 .
- the diffuser actuator 28 (not shown in FIG. 5 ) interfaces with the drive ring 36 through a linkage 42 .
- the diffuser actuator 28 may include a geared drive motor or other actuator system which operates to generate a rotary input about an axis of rotation B to rotate a crank 44 .
- the crank 44 is pivotally connected to a link arm 46 at a pivot 48 which defines an axis C.
- the link arm 46 is pivotally connected to the drive ring 36 at a drive ring pivot 50 to define an axis D.
- Rotation of the diffuser actuator 28 rotates the crank 44 .
- the crank 44 drives the link arm 46 to thereby drive the drive ring 36 about the compressor centerline A.
- Selective rotation of the drive ring 36 about the compressor centerline A moves the diffuser vanes 34 in unison between the maximum flow position ( FIG. 3 ) and minimum flow position ( FIG. 4 ). That is, the diffuser actuator rotary motion is converted to an arcuate path of motion.
- the linkage 42 facilitates the transfer of a mechanical advantage at the maximum flow position and the minimum flow position which are the extreme ends of the stroke and where maximum force is typically required.
- a relatively lower power diffuser actuator 28 may thereby be employed to control the range of the variable diffuser 26 .
- a compact diffuser actuator 28 that maximizes mechanical advantage facilities an overall lightweight system.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
- Transmission Devices (AREA)
Abstract
A variable diffuser for a rotating machine includes a multiple of diffuser vanes mounted to a drive ring. The multiple of diffuser vanes are movable in unison between a maximum flow position and a minimum flow position in response to rotation of a crank to rotate the drive ring about a centerline through a link arm.
Description
- The present disclosure relates to a cabin air compressor, and more particularly to a variable diffuser therefor.
- In traditional aircraft environmental control systems, pressurized air for the aircraft cabin is bled from a main engine or an auxiliary power unit. Environmental control systems for more electric aircraft (MEA) may use a dedicated compressor to pressurize ambient air for use as fresh air in the cabin. The compressor may, for example, be a single stage centrifugal configuration driven by a variable speed permanent magnet motor. A variable diffuser includes a drive ring that rotates about the compressor centerline. Rotation of the drive ring moves a series of diffuser vanes in unison between a maximum and minimum flow position.
- A variable diffuser for a rotating machine according to an exemplary aspect of the present disclosure includes a multiple of diffuser vanes engaged with a drive ring. The multiple of diffuser vanes are movable in unison between a maximum flow position and a minimum flow position in response to rotation of a crank to rotate the drive ring about a centerline through a link arm.
- A rotating machine according to an exemplary aspect of the present disclosure includes a compressor drivable by an electric motor about a centerline. A variable diffuser downstream of the compressor. A multiple of diffuser vanes engaged with a drive ring. The multiple of diffuser vanes movable in unison between a maximum flow position and a minimum flow position in response to rotation of a crank to rotate the drive ring about a centerline through a link arm.
- Various features will become apparent to those skilled in the art from the following detailed description of the disclosed non-limiting embodiment. The drawings that accompany the detailed description can be briefly described as follows:
-
FIG. 1 is a schematic view of a Cabin Air Compressor (CAC); -
FIG. 2 is a perspective view of a variable diffuser of the Cabin Air Compressor (CAC); -
FIG. 3 is an expanded view of the variable diffuser ofFIG. 2 in a maximum flow position; -
FIG. 4 is an expanded view of the variable diffuser ofFIG. 2 in a minimum flow position; and -
FIG. 5 is a perspective view of a linkage operable to position the variable diffuser between the maximum and minimum flow position. -
FIG. 1 schematically illustrates a Cabin Air Compressor (CAC) 20 that may be used to pressurize ambient air to provide fresh air in an aircraft cabin. Although the following description will describe the present application as used in aircraft, the following description should be understood to be applicable to other suitable uses, such as ground vehicles and stationary installations. It should also be appreciated that the present application is not limited to use in conjunction with a specific type of rotating machine. Thus, although the present application is, for convenience of explanation, depicted and described as being implemented in a cabin air compressor, it should be appreciated that it can be implemented in numerous other machines including, but not limited to, a gas turbine engine, an auxiliary power unit, a turbo charger, a super charger, an air cycle machine, an alternator, an electric motor, an electric generator, an integrated constant speed drive generator and gearboxes of various types. - The
CAC 20 generally includes anelectric motor 22, acompressor 24, avariable diffuser 26 and adiffuser actuator 28. Theelectric motor 22, thecompressor 24 and thevariable diffuser 26 are defined about a centerline A of theCAC 20. An inlet 30 communicates air into theCAC 20 where the air is compressed by themotor 22 drivencompressor 24 then communicated from anoutlet 32 through thevariable diffuser 26. Thevariable diffuser 26 includes a multiple of diffuser vanes 34 (FIG. 2 ) which are moved in unison by thediffuser actuator 28 between a maximum flow position (FIG. 3 ) and minimum flow position (FIG. 4 ) to control the airflow of theCAC 20 responsive to control 29. - With reference to
FIG. 5 , thevariable diffuser 26 includes adrive ring 36 that is rotatable about the centerline A. A series ofdrive pins 38 extends from thedrive ring 36 to engage eachrespective diffuser vane 34. Eachrespective diffuser vane 34 pivots about a vane pin 40 (FIGS. 3 and 4 ) which is displaced from each of therespective drive pins 38. Rotation of thedrive ring 36 moves thediffuser vanes 34 in unison between the maximum and minimum flow position about therespective vane pins 40. - The diffuser actuator 28 (not shown in
FIG. 5 ) interfaces with thedrive ring 36 through alinkage 42. Thediffuser actuator 28 may include a geared drive motor or other actuator system which operates to generate a rotary input about an axis of rotation B to rotate acrank 44. Thecrank 44 is pivotally connected to alink arm 46 at apivot 48 which defines an axis C. Thelink arm 46 is pivotally connected to thedrive ring 36 at adrive ring pivot 50 to define an axis D. - Rotation of the
diffuser actuator 28 rotates thecrank 44. Thecrank 44 drives thelink arm 46 to thereby drive thedrive ring 36 about the compressor centerline A. Selective rotation of thedrive ring 36 about the compressor centerline A moves thediffuser vanes 34 in unison between the maximum flow position (FIG. 3 ) and minimum flow position (FIG. 4 ). That is, the diffuser actuator rotary motion is converted to an arcuate path of motion. Thelinkage 42 facilitates the transfer of a mechanical advantage at the maximum flow position and the minimum flow position which are the extreme ends of the stroke and where maximum force is typically required. A relatively lowerpower diffuser actuator 28 may thereby be employed to control the range of thevariable diffuser 26. Acompact diffuser actuator 28 that maximizes mechanical advantage facilities an overall lightweight system. - It should also be appreciated that like reference numerals identify corresponding or similar elements throughout the several drawings. It should also be understood that although a particular component arrangement is disclosed in the illustrated embodiment, other arrangements will benefit herefrom.
- The foregoing description is exemplary rather than defined by the limitations within. Various non-limiting embodiments are disclosed herein, however, one of ordinary skill in the art would recognize that various modifications and variations in light of the above teachings will fall within the scope of the appended claims. It is therefore to be understood that within the scope of the appended claims, the disclosure may be practiced other than as specifically described. For that reason the appended claims should be studied to determine true scope and content.
Claims (11)
1. A variable diffuser for a rotating machine comprising:
a drive ring rotatable about a centerline;
a crank rotatable about an axis of rotation different than said centerline;
a link arm pivotably mounted to said crank and said drive ring; and
a multiple of diffuser vanes engaged with said drive ring, said multiple of diffuser vanes movable in unison between a maximum flow position and a minimum flow position in response to rotation of said crank to rotate said drive ring about said centerline through said link arm.
2. The variable diffuser as recited in claim 1 , wherein said crank is rotatable about said axis of rotation different than said centerline in response to rotary motion of an actuator.
3. The variable diffuser as recited in claim 2 , wherein said rotary motion of said actuator is converted to an arcuate path of motion of said drive ring through said crank and said link arm.
4. The variable diffuser as recited in claim 1 , further comprising a series of drive pins which extend from said drive ring to engage each of said multiple of diffuser vanes.
5. The variable diffuser as recited in claim 1 , further comprising a series of vane pins about which each of said multiple of diffuser vanes are rotatable.
6. A rotating machine comprising:
an electric motor;
a compressor drivable by said electric motor about a centerline;
a variable diffuser downstream of said compressor, said variable diffuser comprising:
a drive ring rotatable about the centerline;
a crank rotatable about an axis of rotation different than said centerline;
a link arm pivotably mounted to said crank and said drive ring; and
a multiple of diffuser vanes engaged with said drive ring, said multiple of diffuser vanes movable in unison between a maximum flow position and a minimum flow position in response to rotation of said crank to rotate said drive ring about said centerline through said link arm.
7. The rotating machine as recited in claim 6 , further comprising an inlet defined along said centerline.
8. The rotating machine as recited in claim 6 , further comprising a radial outlet.
9. The rotating machine as recited in claim 6 , further comprising an actuator, wherein said actuator is operable to rotate said crank about said axis of rotation different than said centerline responsive.
10. The rotating machine as recited in claim 9 , wherein rotary motion of said actuator is converted to an arcuate path of motion of said drive ring through said crank and said link arm.
11. The rotating machine as recited in claim 6 , wherein said rotating machine is a cabin air compressor configured to pressurize ambient air and provide fresh air in an aircraft cabin.
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US12/843,816 US20120020776A1 (en) | 2010-07-26 | 2010-07-26 | Variable diffuser actuation linkage for a cabin air compressor |
EP11174370.4A EP2412984B1 (en) | 2010-07-26 | 2011-07-18 | Variable diffuser for a cabin air compressor |
JP2011158522A JP5449267B2 (en) | 2010-07-26 | 2011-07-20 | Variable diffuser and rotating machine for rotating machine |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US12/843,816 US20120020776A1 (en) | 2010-07-26 | 2010-07-26 | Variable diffuser actuation linkage for a cabin air compressor |
Publications (1)
Publication Number | Publication Date |
---|---|
US20120020776A1 true US20120020776A1 (en) | 2012-01-26 |
Family
ID=44582240
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US12/843,816 Abandoned US20120020776A1 (en) | 2010-07-26 | 2010-07-26 | Variable diffuser actuation linkage for a cabin air compressor |
Country Status (3)
Country | Link |
---|---|
US (1) | US20120020776A1 (en) |
EP (1) | EP2412984B1 (en) |
JP (1) | JP5449267B2 (en) |
Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102562674A (en) * | 2012-02-14 | 2012-07-11 | 大同北方天力增压技术有限公司 | Adjustable blade diffuser structure of turbo supercharger |
US20140301830A1 (en) * | 2013-04-04 | 2014-10-09 | Hamilton Sundstrand Corporation | Cabin air compressor diffuser vane drive ring |
CN105626583A (en) * | 2014-11-24 | 2016-06-01 | 霍尼韦尔国际公司 | Adjustable-trim centrifugal compressor, and turbocharger having same |
US20160230775A1 (en) * | 2015-02-05 | 2016-08-11 | Hanwha Techwin Co., Ltd. | Compressor |
US9568018B2 (en) | 2014-05-30 | 2017-02-14 | Hamilton Sundstrand Corporation | Cover plate for cabin air compressor |
GB2542375A (en) * | 2015-09-16 | 2017-03-22 | Valeo Air Man Uk Ltd | An electric supercharger having a radial flow compressor assembly with an outlet housing defining a volute |
US9890793B2 (en) | 2014-09-23 | 2018-02-13 | Hamilton Sundstrand Corporation | Variable diffuser vane |
US10174765B2 (en) | 2016-01-14 | 2019-01-08 | Hamilton Sundstrand Corporation | Outlet housing for cabin air compressor |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR3009347B1 (en) * | 2013-08-02 | 2018-03-23 | Safran Helicopter Engines | DIFFUSER FOR A RADIAL OR MIXED COMPRESSOR OF AN ENGINE COMPRISING A RING AND ACTUATORS |
CN110566514A (en) * | 2019-10-25 | 2019-12-13 | 重庆通用工业(集团)有限责任公司 | Noise reduction blade structure of centrifugal compressor |
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DE102007022356A1 (en) * | 2007-05-12 | 2008-11-13 | Mahle International Gmbh | Motor exhaust turbocharger has a mounting for the vanes, which remains stable irrespective of the vane settings |
US8523511B2 (en) * | 2007-11-13 | 2013-09-03 | Honeywell International Inc. | Adaptive variable geometry turbocharger strategy |
US9080578B2 (en) * | 2008-09-02 | 2015-07-14 | Hamilton Sundstrand Corporation | Compact drive for compressor variable diffuser |
-
2010
- 2010-07-26 US US12/843,816 patent/US20120020776A1/en not_active Abandoned
-
2011
- 2011-07-18 EP EP11174370.4A patent/EP2412984B1/en active Active
- 2011-07-20 JP JP2011158522A patent/JP5449267B2/en active Active
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US4419047A (en) * | 1979-09-01 | 1983-12-06 | Voith Gmbh | Method of operation of a pump-turbine between part-load operation and reverse pumping operation |
US4836747A (en) * | 1987-07-06 | 1989-06-06 | Aktiengesellschaft Kuehnle, Kopp & Kausch | Adjusting device for a compressor |
US6269642B1 (en) * | 1998-10-05 | 2001-08-07 | Alliedsignal Inc. | Variable geometry turbocharger |
US6547520B2 (en) * | 2001-05-24 | 2003-04-15 | Carrier Corporation | Rotating vane diffuser for a centrifugal compressor |
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Cited By (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102562674A (en) * | 2012-02-14 | 2012-07-11 | 大同北方天力增压技术有限公司 | Adjustable blade diffuser structure of turbo supercharger |
US20140301830A1 (en) * | 2013-04-04 | 2014-10-09 | Hamilton Sundstrand Corporation | Cabin air compressor diffuser vane drive ring |
CN104100573A (en) * | 2013-04-04 | 2014-10-15 | 哈米尔顿森德斯特兰德公司 | Cabin air compressor diffuser vane drive ring |
US9341193B2 (en) * | 2013-04-04 | 2016-05-17 | Hamilton Sundstrand Corporation | Cabin air compressor diffuser vane drive ring |
US9568018B2 (en) | 2014-05-30 | 2017-02-14 | Hamilton Sundstrand Corporation | Cover plate for cabin air compressor |
US9890793B2 (en) | 2014-09-23 | 2018-02-13 | Hamilton Sundstrand Corporation | Variable diffuser vane |
CN105626583A (en) * | 2014-11-24 | 2016-06-01 | 霍尼韦尔国际公司 | Adjustable-trim centrifugal compressor, and turbocharger having same |
KR20160096452A (en) * | 2015-02-05 | 2016-08-16 | 한화테크윈 주식회사 | Compressor |
CN105864102A (en) * | 2015-02-05 | 2016-08-17 | 韩华泰科株式会社 | Compressor |
US20160230775A1 (en) * | 2015-02-05 | 2016-08-11 | Hanwha Techwin Co., Ltd. | Compressor |
US9970455B2 (en) * | 2015-02-05 | 2018-05-15 | Hanwha Power Systems Co., Ltd. | Compressor |
KR102104415B1 (en) | 2015-02-05 | 2020-04-24 | 한화파워시스템 주식회사 | Compressor |
GB2542375A (en) * | 2015-09-16 | 2017-03-22 | Valeo Air Man Uk Ltd | An electric supercharger having a radial flow compressor assembly with an outlet housing defining a volute |
US10174765B2 (en) | 2016-01-14 | 2019-01-08 | Hamilton Sundstrand Corporation | Outlet housing for cabin air compressor |
Also Published As
Publication number | Publication date |
---|---|
EP2412984A2 (en) | 2012-02-01 |
JP5449267B2 (en) | 2014-03-19 |
EP2412984B1 (en) | 2020-04-15 |
JP2012026443A (en) | 2012-02-09 |
EP2412984A3 (en) | 2015-03-04 |
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Legal Events
Date | Code | Title | Description |
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AS | Assignment |
Owner name: HAMILTON SUNDSTRAND CORPORATION, CONNECTICUT Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:COLSON, DARRYL A.;BEERS, CRAIG M.;REEL/FRAME:024743/0252 Effective date: 20100723 |
|
STCB | Information on status: application discontinuation |
Free format text: ABANDONED -- AFTER EXAMINER'S ANSWER OR BOARD OF APPEALS DECISION |