US2714314A - Rotors for rotary gas compressors and motors - Google Patents
Rotors for rotary gas compressors and motors Download PDFInfo
- Publication number
- US2714314A US2714314A US226385A US22638551A US2714314A US 2714314 A US2714314 A US 2714314A US 226385 A US226385 A US 226385A US 22638551 A US22638551 A US 22638551A US 2714314 A US2714314 A US 2714314A
- Authority
- US
- United States
- Prior art keywords
- hub
- lobes
- rotor
- rotors
- pair
- 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
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C18/00—Rotary-piston pumps specially adapted for elastic fluids
- F04C18/08—Rotary-piston pumps specially adapted for elastic fluids of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing
- F04C18/082—Details specially related to intermeshing engagement type pumps
- F04C18/084—Toothed wheels
-
- 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
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T74/00—Machine element or mechanism
- Y10T74/19—Gearing
- Y10T74/1987—Rotary bodies
Definitions
- This invention relates to lobed rotors for rotary gas compressors and motors.
- a lobed rotor according to the invention comprises a set of metal pressings constituting lobes welded to a tubular hub, and stub axles welded to the ends of the hub.
- FIG. 1 is a pictorial view of a male rotor having helical lobes, before the stub axles are attached
- Fig. 2 is a pictorial view of the male rotor of Fig. 1 in course of construction
- Fig. 3 is a pictorial view of a female rotor having helical lobes, before the stub axles are attached
- Fig. 4 is a cross section of a male rotor
- Fig. 5 is a longitudinal section of a male rotor having straight lobes
- Fig. 6 is a half cross section of a male rotor presenting cooling passages.
- 1 denotes a tubular hub
- 2 denotes metal pressings forming the lobes of a male rotor, said lobes being formed in several sections welded together longitudinally at 3, and transversely at 4, the lobes being welded to the hub 1 at 5.
- FIG. 3 denotes metal pressings forming the lobes of a female rotor, the lobes 6 being formed of several sections welded to one another longitudinally at 7, and transversely at 8. Adjacent lobes 6 are welded to one another along their edges at 9. 10 denotes stub axles welded to the hub 1.
- FIG. 11 denotes an internal set of metal pressings welded to the huh I at 12, and leaving a partly annular passage 13 between the two sets of pressings 2 and 11.
- 14 denotes end plugs welded into the ends of the lobes.
- Rotors constructed as described are much lighter than rotors produced by forging or by casting, and, since the lobes are preformed, the amount of material to be machined off to present the finished profile is much reduced.
- An additional advantage is that cooling fluid may be passed through the hollow lobes or through the partly annular passages presented within the lobes.
- a lobed rotor for compressors and the like the combination of a tubular metal hub, a plurality of hollow lobes extending helically in relation to the axis of said tubular hub and each consisting of a pair of sheet metal shells each of arcuate form in cross-section, a helical strip of weld metal joining to one another the shells of each pair, and other helical strips of weld metal joining the shells of each pair to said hub.
- each hollow lobe is semi-circular in cross-section and the concave face of each lobe faces toward the tubular metal hub.
- each sheet metal shell extends helically in relation to the axis of the tubular hub.
- each sheet metal shell extends the length of the tubular metal hub and comprises a plurality of successive sections extending helically in relation to the axis of the tubular hub, and a strip of weld metal joining adjacent sections of the shell together.
- a lobed rotor as claimed in claim 1 including end pieces respectively closing the ends of the hollow lobes.
- a lobed rotor for compressors and the like the combination of a tubular metal hub, a plurality of hollow lobes of semi-circular cross-section extending helically in relation to the axis of said tubular hub and each consisting of a pair of metallic shells, a helical strip of weld metal joining to one another the shells of each pair, and other helical strips of weld metal joining the shells of each pair to said hub.
- a lobed rotor for compressors and the like the combination of a tubular metal hub, a plurality of hollow lobes extending helically in relation to the axis of said tubular hub and each including a pair of similar sheet metal shells each of arcuate form in cross-section extending the length of the hub, an edge of one shell of each pair being located adjacent an edge of the other shell of that pair, a helical strip of weld metal joining to one another the said adjacent edges of the shells of each pair, and other helical strips of weld metal joining the shells to said hub.
- each rotor comprising a tubular metal hub and a plurality of hollow lobes extending helically in relation to the axis of the tubular metal hub and each including a pair of sheet metal shells each of arcuate form in cross-section, a helical strip of weld metal joining to one another the shells of each pair, other helical strips of weld metal joining the shells of each pair to the hub with which they are associated, the lobes of the male rotor being semi-circular in cross-section and having their concave faces directed toward the tubular hub, the convex-shaped faces of the pair of shells forming each lobe of the female rotor being directed toward each other and toward the tubular hub of the female rotor.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Applications Or Details Of Rotary Compressors (AREA)
Description
2, 1955 P. H. N. ULANDER 2,714,314
ROTORS FOR ROTARY GAS COMPRESSORS AND MOTORS Filed May 15, 1951 2 Sheets-Sheet l FIG 2 FIG.
m INVENTOR Per Helge Nutonael Ulonder ATTORNEYS Aug. 2, 1955 P. H. N. ULANDER ROTORS FOR ROTARY GAS COMPRESSORS AND MOTORS 2 Sheets-Sheet 2 Filed May 15, 1951 INVENTOR Per Helge Ncnonuel Ulunder BY fizz M ATT'ORNEYS ROTORS FOR ROTARY GAS COMPRESSORS AND MOTORS Per Helge N. Ulander, London, England, assignor to James Howtlen & Company Limited, Glasgow, Scotland, a corporation of Great Britain and Northern Ireland Application May 15, 1951, Serial No. 226,385
10 Claims. (Cl. 74-434) This invention relates to lobed rotors for rotary gas compressors and motors.
It is customary to manufacture rotors from castings or from solid forgings, the resultant rotors being heavy and having high moments of inertia. In addition, the cost of production is high.
A lobed rotor according to the invention comprises a set of metal pressings constituting lobes welded to a tubular hub, and stub axles welded to the ends of the hub.
A practical embodiment of the invention is illustrated in the accompanying drawings in which Fig. 1 is a pictorial view of a male rotor having helical lobes, before the stub axles are attached, Fig. 2 is a pictorial view of the male rotor of Fig. 1 in course of construction, Fig. 3 is a pictorial view of a female rotor having helical lobes, before the stub axles are attached, Fig. 4 is a cross section of a male rotor, Fig. 5 is a longitudinal section of a male rotor having straight lobes, and Fig. 6 is a half cross section of a male rotor presenting cooling passages.
In the drawings, and referring first to Figs. 1, 2, 4 and 5, 1 denotes a tubular hub, 2 denotes metal pressings forming the lobes of a male rotor, said lobes being formed in several sections welded together longitudinally at 3, and transversely at 4, the lobes being welded to the hub 1 at 5.
6 (Fig. 3) denotes metal pressings forming the lobes of a female rotor, the lobes 6 being formed of several sections welded to one another longitudinally at 7, and transversely at 8. Adjacent lobes 6 are welded to one another along their edges at 9. 10 denotes stub axles welded to the hub 1.
11 (Fig. 6) denotes an internal set of metal pressings welded to the huh I at 12, and leaving a partly annular passage 13 between the two sets of pressings 2 and 11. 14 (Fig. 5) denotes end plugs welded into the ends of the lobes.
Rotors constructed as described are much lighter than rotors produced by forging or by casting, and, since the lobes are preformed, the amount of material to be machined off to present the finished profile is much reduced. An additional advantage is that cooling fluid may be passed through the hollow lobes or through the partly annular passages presented within the lobes.
What is claimed is:
1. In a lobed rotor for compressors and the like, the combination of a tubular metal hub, a plurality of hollow lobes extending helically in relation to the axis of said tubular hub and each consisting of a pair of sheet metal shells each of arcuate form in cross-section, a helical strip of weld metal joining to one another the shells of each pair, and other helical strips of weld metal joining the shells of each pair to said hub.
2. A lobed rotor as claimed in claim 1, in which each hollow lobe is semi-circular in cross-section and the concave face of each lobe faces toward the tubular metal hub.
Ice
3. A lobed rotor as claimed in claim 1, in which the convex faces of the shells of each pair forming a hollow lobe face toward each other and toward the tubular metal hub of the rotor.
4. A lobed rotor as claimed in claim 1, in which each sheet metal shell extends helically in relation to the axis of the tubular hub.
5. A lobed rotor as claimed in claim 1, in which each sheet metal shell extends the length of the tubular metal hub and comprises a plurality of successive sections extending helically in relation to the axis of the tubular hub, and a strip of weld metal joining adjacent sections of the shell together.
6. A rotor as claimed in claim 1, including an internal hollow lobe in each of said plurality of hollow lobes and spaced therefrom, each internal hollow lobe extending helically in relation to the axis of said tubular hub and comprising a pair of sheet metal shells each of arcuate form in cross-section, a helical strip of weld metal joining to one another the shells of each pair, and other helical strips of weld metal joining the shells of each pair of internal lobes to said hub, each internal lobe being spaced from the surrounding hollow lobe of the rotor and presenting a passageway between the rotor lobe and the internal lobe, said passageway being open for reception of cooling fluid.
7. A lobed rotor as claimed in claim 1, including end pieces respectively closing the ends of the hollow lobes.
8. In a lobed rotor for compressors and the like, the combination of a tubular metal hub, a plurality of hollow lobes of semi-circular cross-section extending helically in relation to the axis of said tubular hub and each consisting of a pair of metallic shells, a helical strip of weld metal joining to one another the shells of each pair, and other helical strips of weld metal joining the shells of each pair to said hub.
9. In a lobed rotor for compressors and the like, the combination of a tubular metal hub, a plurality of hollow lobes extending helically in relation to the axis of said tubular hub and each including a pair of similar sheet metal shells each of arcuate form in cross-section extending the length of the hub, an edge of one shell of each pair being located adjacent an edge of the other shell of that pair, a helical strip of weld metal joining to one another the said adjacent edges of the shells of each pair, and other helical strips of weld metal joining the shells to said hub.
10. In a compressor including a male rotor and a female rotor, each rotor comprising a tubular metal hub and a plurality of hollow lobes extending helically in relation to the axis of the tubular metal hub and each including a pair of sheet metal shells each of arcuate form in cross-section, a helical strip of weld metal joining to one another the shells of each pair, other helical strips of weld metal joining the shells of each pair to the hub with which they are associated, the lobes of the male rotor being semi-circular in cross-section and having their concave faces directed toward the tubular hub, the convex-shaped faces of the pair of shells forming each lobe of the female rotor being directed toward each other and toward the tubular hub of the female rotor.
References Cited in the file of this patent UNITED STATES PATENTS Re. 21,374 Moineau Feb. 27, 1940 103,733 Gilchrist May 31, 1870 736,039 Wainwright Aug. 11, 1903 2,325,617 Lysholm et al. Aug. 3, 1943 2,464,011 Wade Mar. 8, 1949 2,564,093 Bijl Aug. 14, 1951 2,572,334 Guibert Oct. 23, 1951
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US226385A US2714314A (en) | 1951-05-15 | 1951-05-15 | Rotors for rotary gas compressors and motors |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US226385A US2714314A (en) | 1951-05-15 | 1951-05-15 | Rotors for rotary gas compressors and motors |
Publications (1)
Publication Number | Publication Date |
---|---|
US2714314A true US2714314A (en) | 1955-08-02 |
Family
ID=22848702
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US226385A Expired - Lifetime US2714314A (en) | 1951-05-15 | 1951-05-15 | Rotors for rotary gas compressors and motors |
Country Status (1)
Country | Link |
---|---|
US (1) | US2714314A (en) |
Cited By (16)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3066851A (en) * | 1958-07-03 | 1962-12-04 | Marshall John Wilmott | Rotary compressors and like rotary machines |
US4127368A (en) * | 1971-02-19 | 1978-11-28 | Langer Paul G | Rotor for eccentric helical gear pump |
US5310320A (en) * | 1990-04-27 | 1994-05-10 | Svenska Rotor Maskiner Ab | Rotor for a rotary screw machine having internal member and external shell made of pressed metal powder |
DE19613659A1 (en) * | 1995-04-07 | 1996-11-07 | Tochigi Fuji Sangyo Kk | Rotor for a screw or screw compressor, cast core for such a rotor, and method for manufacturing the rotor |
WO1997021925A1 (en) * | 1995-12-11 | 1997-06-19 | Ateliers Busch S.A. | Double worm system |
EP1026399A1 (en) | 1999-02-08 | 2000-08-09 | Ateliers Busch S.A. | Twin feed screw |
EP1932616A1 (en) * | 2006-12-11 | 2008-06-18 | Mecastamp International | Method of manufacturing elongated rotating mechanical parts |
US20080170958A1 (en) * | 2007-01-11 | 2008-07-17 | Gm Global Technology Operations, Inc. | Rotor assembly and method of forming |
US9683569B2 (en) | 2015-08-27 | 2017-06-20 | Ingersoll-Rand Company | Compressor system having rotor with distributed coolant conduits and method |
US20170260981A1 (en) * | 2016-03-09 | 2017-09-14 | Eaton Corporation | Segmented rotor form for superchargers and expanders |
US9932983B2 (en) | 2013-03-15 | 2018-04-03 | Eaton Intelligent Power Limited | Low inertia laminated rotor |
US10208656B2 (en) | 2012-11-20 | 2019-02-19 | Eaton Intelligent Power Limited | Composite supercharger rotors and methods of construction thereof |
US10495090B2 (en) | 2015-08-27 | 2019-12-03 | Ingersoll-Rand Company | Rotor for a compressor system having internal coolant manifold |
US10591039B2 (en) | 2012-07-03 | 2020-03-17 | Eaton Intelligent Power Limited | Fiber reinforced plenum for limited-slip differential |
CN111396311A (en) * | 2020-04-26 | 2020-07-10 | 陕西理工大学 | Hollow screw rotor and processing method thereof |
CN111502984A (en) * | 2020-04-26 | 2020-08-07 | 陕西理工大学 | Hollow inner support screw rotor and machining method thereof |
Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US103733A (en) * | 1870-05-31 | Improvement in blowers | ||
US736039A (en) * | 1903-02-10 | 1903-08-11 | Harry Archible Wainwright | Impeller for rotary blowers or pumps. |
USRE21374E (en) * | 1940-02-27 | Gear mechanism | ||
US2325617A (en) * | 1938-01-13 | 1943-08-03 | Jarvis C Marble | Rotor |
US2464011A (en) * | 1946-11-29 | 1949-03-08 | Fmc Corp | Helical hollow rotor pump |
US2564093A (en) * | 1944-02-16 | 1951-08-14 | Hartford Nat Bank & Trust Co | Cylindrical object manufactured by the extrusion process |
US2572334A (en) * | 1948-08-12 | 1951-10-23 | Francis W Guibert | Gearing utilizing detachable gear teeth |
-
1951
- 1951-05-15 US US226385A patent/US2714314A/en not_active Expired - Lifetime
Patent Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US103733A (en) * | 1870-05-31 | Improvement in blowers | ||
USRE21374E (en) * | 1940-02-27 | Gear mechanism | ||
US736039A (en) * | 1903-02-10 | 1903-08-11 | Harry Archible Wainwright | Impeller for rotary blowers or pumps. |
US2325617A (en) * | 1938-01-13 | 1943-08-03 | Jarvis C Marble | Rotor |
US2564093A (en) * | 1944-02-16 | 1951-08-14 | Hartford Nat Bank & Trust Co | Cylindrical object manufactured by the extrusion process |
US2464011A (en) * | 1946-11-29 | 1949-03-08 | Fmc Corp | Helical hollow rotor pump |
US2572334A (en) * | 1948-08-12 | 1951-10-23 | Francis W Guibert | Gearing utilizing detachable gear teeth |
Cited By (22)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3066851A (en) * | 1958-07-03 | 1962-12-04 | Marshall John Wilmott | Rotary compressors and like rotary machines |
US4127368A (en) * | 1971-02-19 | 1978-11-28 | Langer Paul G | Rotor for eccentric helical gear pump |
US5310320A (en) * | 1990-04-27 | 1994-05-10 | Svenska Rotor Maskiner Ab | Rotor for a rotary screw machine having internal member and external shell made of pressed metal powder |
DE19613659C2 (en) * | 1995-04-07 | 1999-09-02 | Tochigi Fuji Sangyo Kk | Rotor for a screw or screw compressor, cast core for such a rotor, and method for manufacturing the rotor |
DE19613659A1 (en) * | 1995-04-07 | 1996-11-07 | Tochigi Fuji Sangyo Kk | Rotor for a screw or screw compressor, cast core for such a rotor, and method for manufacturing the rotor |
US5772418A (en) * | 1995-04-07 | 1998-06-30 | Tochigi Fuji Sangyo Kabushiki Kaisha | Screw type compressor rotor, rotor casting core and method of manufacturing the rotor |
CN1083536C (en) * | 1995-12-11 | 2002-04-24 | 爱特里尔斯布时股份公司 | Double worm system |
AU719268B2 (en) * | 1995-12-11 | 2000-05-04 | Ateliers Busch S.A. | Double worm system |
US6139297A (en) * | 1995-12-11 | 2000-10-31 | Ateliers Busch S.A. | Double worm system |
WO1997021925A1 (en) * | 1995-12-11 | 1997-06-19 | Ateliers Busch S.A. | Double worm system |
EP1026399A1 (en) | 1999-02-08 | 2000-08-09 | Ateliers Busch S.A. | Twin feed screw |
FR2935626A1 (en) * | 2006-12-11 | 2010-03-12 | Mecastamp Internat | PROCESS FOR MANUFACTURING ROTATING MECHANICAL SPARE PARTS |
EP1932616A1 (en) * | 2006-12-11 | 2008-06-18 | Mecastamp International | Method of manufacturing elongated rotating mechanical parts |
US20080170958A1 (en) * | 2007-01-11 | 2008-07-17 | Gm Global Technology Operations, Inc. | Rotor assembly and method of forming |
US10591039B2 (en) | 2012-07-03 | 2020-03-17 | Eaton Intelligent Power Limited | Fiber reinforced plenum for limited-slip differential |
US10208656B2 (en) | 2012-11-20 | 2019-02-19 | Eaton Intelligent Power Limited | Composite supercharger rotors and methods of construction thereof |
US9932983B2 (en) | 2013-03-15 | 2018-04-03 | Eaton Intelligent Power Limited | Low inertia laminated rotor |
US9683569B2 (en) | 2015-08-27 | 2017-06-20 | Ingersoll-Rand Company | Compressor system having rotor with distributed coolant conduits and method |
US10495090B2 (en) | 2015-08-27 | 2019-12-03 | Ingersoll-Rand Company | Rotor for a compressor system having internal coolant manifold |
US20170260981A1 (en) * | 2016-03-09 | 2017-09-14 | Eaton Corporation | Segmented rotor form for superchargers and expanders |
CN111396311A (en) * | 2020-04-26 | 2020-07-10 | 陕西理工大学 | Hollow screw rotor and processing method thereof |
CN111502984A (en) * | 2020-04-26 | 2020-08-07 | 陕西理工大学 | Hollow inner support screw rotor and machining method thereof |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US2714314A (en) | Rotors for rotary gas compressors and motors | |
US2014932A (en) | Roots blower | |
US2675208A (en) | Turbine rotor blade | |
CN101025116B (en) | Axial flow positive displacement gas generator with combustion extending into an expansion section | |
US2457314A (en) | Rotary screw wheel device | |
US2463080A (en) | Interengaging impeller fluid pump | |
US8109748B2 (en) | Gear tooth and external gear pump | |
US2699598A (en) | Method of making turbine blades | |
US3179330A (en) | Rotary engines and compressors | |
DE112014005001T5 (en) | Centrifugal compressor and turbocharger | |
US2410172A (en) | Rotary screw wheel apparatus | |
DE1503579A1 (en) | Compressor for gaseous media | |
EP2852763B1 (en) | Reduced noise screw machines | |
US3279682A (en) | Screw air compressors | |
US2298525A (en) | Rotary internal combustion engine | |
US2830357A (en) | Blades for gas turbines | |
DE102014105882A1 (en) | Rotor pair for a compressor block of a screw machine | |
US4679996A (en) | Rotary machine having screw rotor assembly | |
US3686595A (en) | Waveguide transition member | |
US3586544A (en) | Method of producing piston rings | |
US2949224A (en) | Supersonic centripetal compressor | |
US2916808A (en) | Method of making a blade for turbomachines | |
US2009996A (en) | Method of making valves | |
US1773741A (en) | Method of making projectiles | |
US2441771A (en) | Yieldable drive for rotors |