US2366251A - Blower impeller - Google Patents
Blower impeller Download PDFInfo
- Publication number
- US2366251A US2366251A US486887A US48688743A US2366251A US 2366251 A US2366251 A US 2366251A US 486887 A US486887 A US 486887A US 48688743 A US48688743 A US 48688743A US 2366251 A US2366251 A US 2366251A
- Authority
- US
- United States
- Prior art keywords
- impeller
- plates
- vanes
- parts
- die
- 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
- 238000010276 construction Methods 0.000 description 6
- 238000007493 shaping process Methods 0.000 description 6
- 238000004519 manufacturing process Methods 0.000 description 5
- 238000005266 casting Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 239000011888 foil Substances 0.000 description 3
- 238000004512 die casting Methods 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 238000005242 forging Methods 0.000 description 2
- 238000012856 packing Methods 0.000 description 2
- 238000002485 combustion reaction Methods 0.000 description 1
- 230000006735 deficit Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000005498 polishing Methods 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 230000008719 thickening Effects 0.000 description 1
Images
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
- F04D29/08—Sealings
- F04D29/083—Sealings 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
- F04D29/26—Rotors specially for elastic fluids
- F04D29/28—Rotors specially for elastic fluids for centrifugal or helico-centrifugal pumps for radial-flow or helico-centrifugal pumps
- F04D29/284—Rotors specially for elastic fluids for centrifugal or helico-centrifugal pumps for radial-flow or helico-centrifugal pumps for compressors
-
- 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
- F04D29/08—Sealings
- F04D29/16—Sealings between pressure and suction sides
- F04D29/161—Sealings between pressure and suction sides especially adapted for elastic fluid pumps
- F04D29/162—Sealings between pressure and suction sides especially adapted for elastic fluid pumps of a centrifugal flow wheel
-
- 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
- F04D29/26—Rotors specially for elastic fluids
- F04D29/28—Rotors specially for elastic fluids for centrifugal or helico-centrifugal pumps for radial-flow or helico-centrifugal pumps
- F04D29/281—Rotors specially for elastic fluids for centrifugal or helico-centrifugal pumps for radial-flow or helico-centrifugal pumps for fans or blowers
-
- 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
- F04D29/26—Rotors specially for elastic fluids
- F04D29/28—Rotors specially for elastic fluids for centrifugal or helico-centrifugal pumps for radial-flow or helico-centrifugal pumps
- F04D29/284—Rotors specially for elastic fluids for centrifugal or helico-centrifugal pumps for radial-flow or helico-centrifugal pumps for compressors
- F04D29/285—Rotors specially for elastic fluids for centrifugal or helico-centrifugal pumps for radial-flow or helico-centrifugal pumps for compressors the compressor wheel comprising a pair of rotatable bladed hub portions axially aligned and clamped together
-
- 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
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S415/00—Rotary kinetic fluid motors or pumps
- Y10S415/915—Pump or portion thereof by casting or molding
-
- 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
- Y10T29/00—Metal working
- Y10T29/49—Method of mechanical manufacture
- Y10T29/49316—Impeller making
- Y10T29/49329—Centrifugal blower or fan
Definitions
- This invention ⁇ relates to improvements in cen- ,.-trifugal gasblowers, and more particularly to impellers of ⁇ thelclosed type, of a construction which is particularly adaptable for being prof, ⁇ .ducedby die-shaping, ⁇ that is, die-casting or drop-forging.
- ⁇ closed type impellers ⁇ is meant impellers in ⁇ which the ⁇ generally radially ⁇ ⁇ disposed blciwervanes are disposed ⁇ between a pair, of disc-,like plates ⁇ at ⁇ their sides so that the ⁇ gas passages ⁇ 4formed by thevanes andlplates h andwhichextend ingenerally radial directions i V,
- Theclosed type of inflpellers ⁇ is ⁇ recognized as h @eine more "fopenff type ⁇ impellers, that is, the type having at are open only at their Ainner and outer ends.
- Fig. 2 is a sectional View of the impelleron the line II-II of Fig. 1 illustrating the cross-'secticnn l alshape of the vanes; and l r I impelleron the line III-III of Fig. 1. H
- Fig. 3 isacross- ⁇ sectionalview of part of the y I
- a centrifugal blower casing is designated by numeral I.
- the casing may be of the general shape" of a volute and is providedl with a gas ⁇ inlet opening 2 at one side and ancpening 3iforlthelimpeller ⁇ drvelshaft 4 ⁇ at theCother side.l
- the impeller hub 6 is mounted ⁇ on the drive shaftf.
- This hub forms the cenh tral ⁇ ⁇ portion :of one main ,part ⁇ of ⁇ ⁇ the impeller whichcomprises, in addition to the hub,a plate l ⁇ lextendingoutwardly andparts ⁇ 8 of the vanes i 9v extending approximately at right angles to said platel ⁇ ,h l h, h h "f
- Theother main part ⁇ IIJ ofthe impeller comprises, ⁇ a ⁇ ring-shapedplate I I having a central openingmIZ and other parts I3 of ⁇ impeller vanes tion" ⁇ it ismore desirable ⁇ to ⁇ i-lnd structuresiin ⁇ 1 ⁇ which ⁇ drop-forging ⁇ or die-casting can be ⁇ ⁇ used in ⁇ place of ordinary casting.
- the present ⁇ invention hasfor ⁇ an ⁇ objectto provide a closed type impeller adapted to ⁇ be produced in two principal parts by permanent mold "operations, that is, by die-shaping, such as dropforging or ⁇ die-casting, operations and, ⁇ which parts can then be readily broughtinto condition to be eiectively joined together intoanashim bled impeller. l
- a further object bf this invention is to provide aclosed type impeller in which two parts produced by die-shaping operations are assembled with locking shoulders adapted to transmit the centrifugal forces therebetweenand held to- ⁇ gether in engaging relation by securing means extending through the blades and through ⁇ the side plates.
- Another object of this invention is to provide a ⁇ h closed type impeller having vanes of fluid foil cross-sectional shape, considered in a plane h transverse to the axis of rotation.
- securing means which may comprise bolts or rivets I8 which pass through openings I9 in the plates and vanes at radially intermediate points At the Vpoints where the rivets pass l h-through the plates 'I and l I ⁇ 4 the plates are ⁇ of in- ⁇ creased thickness in order to'be better able to ⁇ carry the stress applied by ⁇ the rivets.
- This thickening is conveniently obtained by providing a ring-like flange or rim ⁇ I5 on plate 'lhaving a shoulder surface which cooperates with a labyrinth packing 21, which seals between plate 1 and basing I, and the thick portion 20 ⁇ of plate jII ⁇ also has a shoulder which cooperates with another packing 28.
- the vanes In order that the vanes shall have sui'icient thickness to accommodate the bolts and to resist the strong centrifugal forces without greatly reducing the aerodynamic efficiency of the impeller or causing undesirable whistling noise in operation, thevanesare given fluid foil shape in the direction offlow of the gasill
- This uid foil cross-sectional shape is clearly apparent from Fig. 2 of the drawings, from which it can be seen that the inner and outer edges of the vanes are comparatively thin and rounded off while' the central parts are thicker and of suflicient thickness to allow the rivets I8 to pass therethrough.
- the surfaces of the rounded-olf. innenand. outer edges pass over smoothly to' the' surfaces or. the central parts so as to avoid impairment of aerodynamic eiciency and minimize noise in opera-l tion.
- Another feature of: the shape of the ⁇ vanes is that their thickness isprogressively greaterffrom the centers toward their lateral vedges, asis apparent from Fig. 3.
- the most importantpurpose of this feature is to providerthe'necessary draft to enable removal ofi'thevanes from the dies in their production by die-shaping'operatons.
- the present construction is .particularly well adapted ⁇ for production Vof iimpellers intlarge iquantities, that is,I 'suchlqu'antities as would be re-f.
- the presenty construction has the'advantage of greatv simplicity and speed of production, yet gives impellers of great strength and dependability Without material sacrifice in elli'ciency over impellers made according to other constructions andwby more laborious and time-consuming methods.
- An' impeller of the closed type for rotary centrifugal "gas blowers comprising a 'pair of ⁇ plates each having a plurality of blower vane parts formed on a side wall thereof, said vane parts being located on 'said'plates in registering pairs, the corresponding surfaces thereof fitting together exactly and having interengaging shoulders facing inwardly and outwardly respectively for transfer of radial forces, said plates and vanes having openings extending vtherethrough substantially in the'direction ofthe axis of rotation of the impeller, and securing means extending Kthrough said openings.
- a centrifugal blower a casing, a rotary impeller of the closed type, said impeller comprising a pair of plates ⁇ each having parts of impeller vanes ,formed on one side in position to register with corresponding vane parts of the other plate,
- An impeller of vthe closedtype for'rotary centrifugal blowers comprising a pairof .plates each having parts of impeller vanes'forrne'diton one sidein position to register with correspond- ⁇ ing vane parts of the other plate, the corresponding'vane parts fitting together exactly, thesides of the gas passages formed between the vanes being closed by said plates and one of said plates having a central opening serving asaninletfor 50 gas to said passages, and means for securingthe to JOHANN V'rsu'univr-hina.
Description
Jan. 2, 1945.` J. FLLEMANN 2,366i251 i BLOWER IMPELLER .original Filed Dec. iv, 1940 2 sheets-sheet 1 grime/who@ l Jan. 2, 1945.. J, FLLEMANN 2,366,251
BLOWER IMPELLER original Filed Deo. 17, 1940 2 sheets-sheet 2 I -cfaa/Wzjzlema UNITED STAT application is a division @of Patented Jan. 2,` `1945 Es PATENT OFFICE l "BLOWER IMBELLEB, h h l h `Johann"Iiillemann,Washington,` D. C., h original application December 17;1946Qseria1 t .No.*370,553. Divided and thsapplication May 13, 1943, SerialNo.318.6,887` I w my pending application, seria; No.` `370,553,16r Blowen im- "filed'Decernber 1'7J 1940.
`pellers and methods of manufacturing saine,
This invention `relates to improvements in cen- ,.-trifugal gasblowers, and more particularly to impellers of` thelclosed type, of a construction which is particularly adaptable for being prof,}.ducedby die-shaping, `that is, die-casting or drop-forging. By` closed type impellers` is meant impellers in `which the` generally radially` `disposed blciwervanes are disposed `between a pair, of disc-,like plates` at `their sides so that the `gas passages` 4formed by thevanes andlplates h andwhichextend ingenerally radial directions i V,Theclosed type of inflpellers` is` recognized as h @eine more "fopenff type` impellers, that is, the type having at are open only at their Ainner and outer ends.-
h efficient aerodynamically l than leastoneside oftheair passages open;` but, :on
` theother hand, the` closed type of impeller has h their adoption.
i presented certain manufacturing problems and difliculties which have Vto, some `extent `retarded It has been proposedto make ,impellers of the "lclosed type `by `casting in `one piecemand, with ""lcertain renementsiof construction', thissystem offrnanufactufre has provedsuccessful, but ordinary casting operations involve comparatively @greater labor and time, and for quantity productailedjdescription of the method andthe accom- "Danying drawings whichfillustrate an fernbedi- `Inthedrawings:` `Fig.-11is an axial Vsectional v rI I of Fig. 2 of a centrifugalblower` havinga y ment of the inventionf View on the line closed type impellercomposed primarily cf` two l, diefshaped parts joined together; Fig. 2 is a sectional View of the impelleron the line II-II of Fig. 1 illustrating the cross-'secticnn l alshape of the vanes; and l r I impelleron the line III-III of Fig. 1. H
i Fig. 3:isacross-{sectionalview of part of the y I In Fig. 1` of the drawingsa centrifugal blower casing is designated by numeral I. The casing may be of the general shape" of a volute and is providedl with a gas` inlet opening 2 at one side and ancpening 3iforlthelimpeller `drvelshaft 4 `at theCother side.l The impeller hub 6 is mounted `on the drive shaftf. i This hub forms the cenh tral` `portion :of one main ,part` of` `the impeller whichcomprises, in addition to the hub,a plate l `lextendingoutwardly andparts` 8 of the vanes i 9v extending approximately at right angles to said platel` ,h l h, h h "f Theother main part `IIJ ofthe impeller comprises,` a` ring-shapedplate I I having a central openingmIZ and other parts I3 of` impeller vanes tion"` it ismore desirable` to `i-lnd structuresiin` 1 `which `drop-forging `or die-casting can be` `used in `place of ordinary casting. h `The present `invention hasfor `an `objectto provide a closed type impeller adapted to `be produced in two principal parts by permanent mold "operations, that is, by die-shaping, such as dropforging or `die-casting, operations and, `which parts can then be readily broughtinto condition to be eiectively joined together intoanassemn bled impeller. l
A further object bf this invention is to provide aclosed type impeller in which two parts produced by die-shaping operations are assembled with locking shoulders adapted to transmit the centrifugal forces therebetweenand held to-` gether in engaging relation by securing means extending through the blades and through `the side plates.
Another object of this invention is to provide a` h closed type impeller having vanes of fluid foil cross-sectional shape, considered in a plane h transverse to the axis of rotation.
h Further objects and` advantages of the inven- `tion will be apparent from the following deouter ends thereof are open. The impeller is therefore ofthe closed type.
corresponding` in position `and `registering with the respectively corresponding parts 8` of vanes h 9.` `It is apparent from Fig. 1 that the plates `I `anc'LII `cldse the `sides of the gas passages I4` betweenthe vanes so that'only the inner and t n Fromnig. 1 win also be seen thatthe two parts 8, and n I3 of .the impeller vanes have engaging `shoulders IB and` I'l` which resist the tendency of the partHIU ofthe impellerto be distorted outwardly `under the strong influence oit'` centrifugal i force,4 at high speed. `The two parts of` the `impeller are held together in locking` engagement `where the vanes are of comparatively greater thickness.
by securing means which may comprise bolts or rivets I8 which pass through openings I9 in the plates and vanes at radially intermediate points At the Vpoints where the rivets pass l h-through the plates 'I and l I`4 the plates are `of in-` creased thickness in order to'be better able to` carry the stress applied by `the rivets. This thickening is conveniently obtained by providing a ring-like flange or rim `I5 on plate 'lhaving a shoulder surface which cooperates with a labyrinth packing 21, which seals between plate 1 and basing I, and the thick portion 20 `of plate jII` also has a shoulder which cooperates with another packing 28.
In order that the vanes shall have sui'icient thickness to accommodate the bolts and to resist the strong centrifugal forces without greatly reducing the aerodynamic efficiency of the impeller or causing undesirable whistling noise in operation, thevanesare given fluid foil shape in the direction offlow of the gasill This uid foil cross-sectional shape is clearly apparent from Fig. 2 of the drawings, from which it can be seen that the inner and outer edges of the vanes are comparatively thin and rounded off while' the central parts are thicker and of suflicient thickness to allow the rivets I8 to pass therethrough. The surfaces of the rounded-olf. innenand. outer edges pass over smoothly to' the' surfaces or. the central parts so as to avoid impairment of aerodynamic eiciency and minimize noise in opera-l tion.
Another feature of: the shape of the` vanes is that their thickness isprogressively greaterffrom the centers toward their lateral vedges, asis apparent from Fig. 3. The most importantpurpose of this feature is to providerthe'necessary draft to enable removal ofi'thevanes from the dies in their production by die-shaping'operatons.
The present construction is .particularly well adapted `for production Vof iimpellers intlarge iquantities, that is,I 'suchlqu'antities as would be re-f.
quired for small-size*,impellersfforuse in turbochargers or superch'argingcomparatively small internal .combustion engines. By reason ofthe f' smooth'surfaces obtained byy die-shaping operations,v compared -withthe rough `surfaces obtainedby ordinary sand'casting methods the provision of a constructionwhich is adaptable'for die-shaping is of extreme importance This eliminates a large amount of finishing and polishing after the `casting operation, while at the same :time pro-- viding impeller "vanes which areU suliciently smooth to givegood aerodynamic efliciency.
Compared with other constructions, the presenty construction has the'advantage of greatv simplicity and speed of production, yet gives impellers of great strength and dependability Without material sacrifice in elli'ciency over impellers made according to other constructions andwby more laborious and time-consuming methods.
I claim:
l. An' impeller of the closed type for rotary centrifugal "gas blowers comprising a 'pair of `plates each having a plurality of blower vane parts formed on a side wall thereof, said vane parts being located on 'said'plates in registering pairs, the corresponding surfaces thereof fitting together exactly and having interengaging shoulders facing inwardly and outwardly respectively for transfer of radial forces, said plates and vanes having openings extending vtherethrough substantially in the'direction ofthe axis of rotation of the impeller, and securing means extending Kthrough said openings.
2. In a centrifugal blower, a casing, a rotary impeller of the closed type, said impeller comprising a pair of plates `each having parts of impeller vanes ,formed on one side in position to register with corresponding vane parts of the other plate,
the corresponding vane parts tting together exactly, the sides of the gas passages formed between the vanes being closed by said. plates and 1 Lone of said plates havingia :central opening serv- 10 ing as an inlet for gas to said passages, said plates having circularly extending portions of greater thickness than their normal thickness extending raround said plates at positions opposite the midvdle. portions of the vane parts, the middle portions of's'aid vanes and said thicker portions of f .saidplates being `provided with openings extendv"wing in the general direction of the axis of rota-- Ytion of the impeller, and securing means extendy ingthrough s'aid openings, said thicker portions feo of said plates having cylindrical outer surfaces f and llabyrnthfpackings engaging said cylindrical lsurfaces and the casing and sealingthere'betwe'en. i
31An impeller of the closed type frjrotaly centrifugal blowers comprising -a pair of plates g5 each having parts'of impellervanes' formed on one side inA position to register with' corresponding vanefparts of the' other plate,-thecorresponding `vane parts `fitting'together exactly, thesides of the gaspassages formed'betweenthe vanesbeing ao closed by said plates and one of said plates 'havring a central opening serving as an inlet'rforqigas to said passages, some ofthe corresponding vane parts 'having registering openingsY :extending I therethrough and through 'the plates inthe 'di- 35 rection of the axis of rotation of 'the impeller,
and securing means extending through said openings, said vane parts being thicker at the" lateral ends adjacent the plates than at the centers and being thicker at their -radially intermediate por- 4o tions than toward` their inner and outerjedges.
4. An impeller of vthe closedtype for'rotary centrifugal blowers comprisinga pairof .plates each having parts of impeller vanes'forrne'diton one sidein position to register with correspond-` ing vane parts of the other plate, the corresponding'vane parts fitting together exactly, thesides of the gas passages formed between the vanes being closed by said plates and one of said plates having a central opening serving asaninletfor 50 gas to said passages, and means for securingthe to JOHANN V'rsu'univr-hina.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US486887A US2366251A (en) | 1940-12-17 | 1943-05-13 | Blower impeller |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US37055340A | 1940-12-17 | 1940-12-17 | |
US486887A US2366251A (en) | 1940-12-17 | 1943-05-13 | Blower impeller |
Publications (1)
Publication Number | Publication Date |
---|---|
US2366251A true US2366251A (en) | 1945-01-02 |
Family
ID=27005002
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US486887A Expired - Lifetime US2366251A (en) | 1940-12-17 | 1943-05-13 | Blower impeller |
Country Status (1)
Country | Link |
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US (1) | US2366251A (en) |
Cited By (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2482462A (en) * | 1946-11-09 | 1949-09-20 | Wright Aeronautical Corp | Centrifugal compressor construction |
US2648493A (en) * | 1945-10-23 | 1953-08-11 | Edward A Stalker | Compressor |
US2652191A (en) * | 1942-02-21 | 1953-09-15 | Buchi Alfred | Rotor for compressing machines such as centrifugal blowers and pumps |
US2796836A (en) * | 1947-12-30 | 1957-06-25 | Buchi Alfred | Rotors for compressing machines such as centrifugal blowers and pumps |
US3140042A (en) * | 1961-08-15 | 1964-07-07 | Fujii Noriyoshi | Wheels for centrifugal fans of the forward curved multiblade type |
US3145912A (en) * | 1962-07-18 | 1964-08-25 | Artag Plastics Corp | Portable centrifugal pump |
US3782851A (en) * | 1973-01-02 | 1974-01-01 | Outboard Marine Corp | Die castable centrifugal fan |
US4484860A (en) * | 1982-05-17 | 1984-11-27 | Donaldson Company, Inc. | Radial tube centrifugal fan |
US4655684A (en) * | 1984-08-02 | 1987-04-07 | Haentjens Walter D | Centrifugal pump for wide range of operating conditions |
US4669951A (en) * | 1983-07-28 | 1987-06-02 | Stern Leif E | Air operated motor |
US4799861A (en) * | 1987-10-29 | 1989-01-24 | Warren Pumps, Inc. | Pump |
US5551837A (en) * | 1992-01-17 | 1996-09-03 | Ksb Aktiengesellschaft | Apparatus for regulating the transport flow of a liquid that is circulated by a centrifugal pump in a closed pipe system |
EP1416164A2 (en) * | 2002-11-04 | 2004-05-06 | BorgWarner Inc. | Two-piece molded fan |
-
1943
- 1943-05-13 US US486887A patent/US2366251A/en not_active Expired - Lifetime
Cited By (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2652191A (en) * | 1942-02-21 | 1953-09-15 | Buchi Alfred | Rotor for compressing machines such as centrifugal blowers and pumps |
US2648493A (en) * | 1945-10-23 | 1953-08-11 | Edward A Stalker | Compressor |
US2482462A (en) * | 1946-11-09 | 1949-09-20 | Wright Aeronautical Corp | Centrifugal compressor construction |
US2796836A (en) * | 1947-12-30 | 1957-06-25 | Buchi Alfred | Rotors for compressing machines such as centrifugal blowers and pumps |
US3140042A (en) * | 1961-08-15 | 1964-07-07 | Fujii Noriyoshi | Wheels for centrifugal fans of the forward curved multiblade type |
US3145912A (en) * | 1962-07-18 | 1964-08-25 | Artag Plastics Corp | Portable centrifugal pump |
US3782851A (en) * | 1973-01-02 | 1974-01-01 | Outboard Marine Corp | Die castable centrifugal fan |
US4484860A (en) * | 1982-05-17 | 1984-11-27 | Donaldson Company, Inc. | Radial tube centrifugal fan |
US4669951A (en) * | 1983-07-28 | 1987-06-02 | Stern Leif E | Air operated motor |
US4655684A (en) * | 1984-08-02 | 1987-04-07 | Haentjens Walter D | Centrifugal pump for wide range of operating conditions |
US4799861A (en) * | 1987-10-29 | 1989-01-24 | Warren Pumps, Inc. | Pump |
US5551837A (en) * | 1992-01-17 | 1996-09-03 | Ksb Aktiengesellschaft | Apparatus for regulating the transport flow of a liquid that is circulated by a centrifugal pump in a closed pipe system |
EP1416164A2 (en) * | 2002-11-04 | 2004-05-06 | BorgWarner Inc. | Two-piece molded fan |
EP1416164A3 (en) * | 2002-11-04 | 2005-04-06 | BorgWarner Inc. | Two-piece molded fan |
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