US3809499A - Centrifugal compressor - Google Patents

Centrifugal compressor Download PDF

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Publication number
US3809499A
US3809499A US00260662A US26066272A US3809499A US 3809499 A US3809499 A US 3809499A US 00260662 A US00260662 A US 00260662A US 26066272 A US26066272 A US 26066272A US 3809499 A US3809499 A US 3809499A
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US
United States
Prior art keywords
rotor
vanes
fluid
impeller
centrifugal compressor
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
Application number
US00260662A
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English (en)
Inventor
P Collet
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Nederlandse Organisatie voor Toegepast Natuurwetenschappelijk Onderzoek TNO
Original Assignee
Nederlandse Organisatie voor Toegepast Natuurwetenschappelijk Onderzoek TNO
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Filing date
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Publication of US3809499A publication Critical patent/US3809499A/en
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Expired - Lifetime legal-status Critical Current

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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
    • F04D17/00—Radial-flow pumps, e.g. centrifugal pumps; Helico-centrifugal pumps
    • F04D17/08—Centrifugal pumps
    • F04D17/18—Centrifugal pumps characterised by use of centrifugal force of liquids entrained in pumps

Definitions

  • F04b 23/04, F04d 7/00- h angle of Outflow in P e to the radial direction 58 Field of Search 417/67, 78; 415/116, 215 are equal to the angle of the Section of the fixed 1 bent-forward vanes that is situated at the same [56] References Cited diameter in the same plane of revolution.
  • the invention relates to a centrifugal compressor of 1 1 the type provided with a driven rotor with fixed vanes,
  • centrifugal compressor is known in the art. Over a centrifugal compressor with a rotor provided with radial vanes it has the advantage that at equal circumferential velocity of the rotor the energy transferred per unity of weightof gas is higher. This advantage manifests itself in a reduction of the speed or in a diminution of the rotor-diameter for a centrifugal compressor, which hasto yield a desired pressure ratio.
  • the object of the present invention is to improve the adjustment behavior of the above centrifugal compressor by highly decreasing the tendency towards instability.
  • the invention is characterized in that jets have been provided for the formation of fluid vanes in the rotor which jets on the one hand connect to a common central chamber linked up to an axial fluid supply and on the other hand end in jet openings provided in a substantially rotationally-symmetrical manner.
  • the direction of outflow of these jetopenings are substantially perpendicular to the axial direction of the rotor and the angle of outflow respecting the radial direction being substantially equal to the angle of the section of the fixed bent-forward vanes that is situated at the same diameter in the same plane ofrevolut'ion, and in that the rotor in the way known in the art is enclosed by a compression chamber for fluid vanes that is in open connection with a fluid reservoir with which the fluid supply to the jets is connected and from which reservoir the compressed gas can be discharged via an outlet.
  • the fluid vanes that at high speed emerge from the rotor contribute considerably towards the transfer of energy to the gas to be compressed.
  • the jets may have been provided in the rotor independent of the fixed bent-forward vanes.
  • jet openings are provided tips of the fixed vanes.
  • the jets correspond to the fixed bent-forward vanes and are partially provided in the fixed vanes. They can also be provided completely in the fixed vanes, thus in the center communicating with an annular common chamber in the way known in the art.
  • a further advantage is that the jets are completely provided in the fixed vanes.
  • FIG. 1 a vertical cross-section through a centrifugal compressor, which is schematically shown;
  • FIG. 2 a section on an enlarged scale along line II-II of the rotor of FIG. 3;
  • FIG. 3 a side-view on an enlarged scale of a part of the rotor.
  • the centrifugal compressor-shown in FIG. 1 consists of a compressor housing 1, which is assembled with a fluid reservoir 2.
  • a rotor 3 is centrally mounted in compressorhousing l the rotor being which is fixedly connected to a shaft 4, with the bearing housing 5 thereof fixedly connected to housing 1.
  • Rotor 3 is driven by an electromotor 6 via shaft 4.
  • Rotor 3 is'provided with fixed vanes 7 that are bent forward at the gas-inlet side in the direction of rotation (see arrow in FIG. 3) and in respect of the axial direction, and that serve for the compression of gas, for example a freon gas, which is sucked by a suction nozzle 8.
  • gas for example a freon gas
  • rotor 3 is provided with rotationallysymmetrical mounted jets 9 abutting a central chamber 10, chamber 10 is connected to a fluid supply duct 11 which, via an adjustment device 12, is connected to fluid reservoir 2.
  • the supply of fluid is effected as a result of the difference in gaseous pressure between the compressor-inlet and the compressor-outlet.
  • the chamber in which the fluid vanes are formed is bounded by walls 13 and 14 of compressor housing 1.
  • these vanes may be alternately provided with a jet.
  • the jet openings can also lie in a surface of revolution different from that of the tips of the vanes, provided the jet openings are situated such that the fluid jets emerging from them are moving in a plane that is radial in respect of the rotor-shaft.
  • a centrifugal compressor comprising:
  • a compression chamber having a central inlet for a a driven impeller disposed generally in the center of said compression chamber;
  • said impeller comprising a rotor provided with fixed vided in a substantially rotationally-symmetrical manner, the direction of outflow of said outlet ends being substantially perpendicular to the axial direction of said rotor, and the angle of outflow in respect of the radial direction being substantially equal to the angle of the section of the fixed bentforward vanes that is situated at the same diameter in the same plane of revolution;
  • said compression chamber having a pair of spaced parallel walls disposed on opposite sides of said impeller and extending radially outwardly away from said impeller and terminating in an annular fluid collecting chamber, said parallel walls forming a compression chamber for fluid vanes effecting a compressive action upon a gaseous medium therebetween;
  • a fluid reservoir in open connection with said compression chamber and having a discharge pipe for the compressed gaseous medium.
  • a centrifugal compressor according to claim I wherein the outlet ends of the jet channels are provided in the tips of the fixed bent-forward vanes.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
US00260662A 1971-06-21 1972-06-07 Centrifugal compressor Expired - Lifetime US3809499A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL717108490A NL144368B (nl) 1971-06-21 1971-06-21 Centrifugaalvloeistofvanencompressor.

Publications (1)

Publication Number Publication Date
US3809499A true US3809499A (en) 1974-05-07

Family

ID=19813434

Family Applications (1)

Application Number Title Priority Date Filing Date
US00260662A Expired - Lifetime US3809499A (en) 1971-06-21 1972-06-07 Centrifugal compressor

Country Status (9)

Country Link
US (1) US3809499A (de)
BE (1) BE785131A (de)
CA (1) CA952880A (de)
CH (1) CH553336A (de)
DE (1) DE2230023A1 (de)
FR (1) FR2142988B1 (de)
GB (1) GB1350853A (de)
IT (1) IT960425B (de)
NL (1) NL144368B (de)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2565576B (en) * 2017-08-17 2020-03-04 Edwards Ltd A pump and a method of pumping a gas
GB2565579B (en) * 2017-08-17 2020-03-04 Edwards Ltd A pump and method of pumping a fluid
GB2565577B (en) * 2017-08-17 2020-12-16 Edwards Ltd Momentum transfer pump and wet scrubber
GB2581382B (en) * 2019-02-15 2021-08-18 Edwards Ltd A pump and a method of pumping a gas

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR725404A (fr) * 1930-11-04 1932-05-12 Escher Wyss & Cie Const Mec Pompe centrifuge
US1946524A (en) * 1931-05-15 1934-02-13 C A Dunham Co Vacuum pump
US3363832A (en) * 1967-03-02 1968-01-16 Carrier Corp Fans
US3485484A (en) * 1966-10-20 1969-12-23 Venot Pic Sa Device for the circulation and the aeration of fluids
US3630641A (en) * 1969-03-20 1971-12-28 Tno Centrifugal fluid vanes compressor

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR725404A (fr) * 1930-11-04 1932-05-12 Escher Wyss & Cie Const Mec Pompe centrifuge
US1946524A (en) * 1931-05-15 1934-02-13 C A Dunham Co Vacuum pump
US3485484A (en) * 1966-10-20 1969-12-23 Venot Pic Sa Device for the circulation and the aeration of fluids
US3363832A (en) * 1967-03-02 1968-01-16 Carrier Corp Fans
US3630641A (en) * 1969-03-20 1971-12-28 Tno Centrifugal fluid vanes compressor

Also Published As

Publication number Publication date
FR2142988A1 (de) 1973-02-02
NL7108490A (de) 1972-12-27
FR2142988B1 (de) 1973-07-13
DE2230023A1 (de) 1972-12-28
CH553336A (de) 1974-08-30
NL144368B (nl) 1974-12-16
CA952880A (en) 1974-08-13
IT960425B (it) 1973-11-20
GB1350853A (en) 1974-04-24
BE785131A (fr) 1972-12-20

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