US3280752A - Pumps - Google Patents

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Publication number
US3280752A
US3280752A US407498A US40749864A US3280752A US 3280752 A US3280752 A US 3280752A US 407498 A US407498 A US 407498A US 40749864 A US40749864 A US 40749864A US 3280752 A US3280752 A US 3280752A
Authority
US
United States
Prior art keywords
channel
concave surface
rib
vanes
surface channel
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
US407498A
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English (en)
Inventor
Reinhold Lühmann
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.)
Siemen and Hinsch GmbH
Original Assignee
Siemen and Hinsch GmbH
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Siemen and Hinsch GmbH filed Critical Siemen and Hinsch GmbH
Application granted granted Critical
Publication of US3280752A publication Critical patent/US3280752A/en
Anticipated expiration legal-status Critical
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
    • F04D5/00—Pumps with circumferential or transverse flow
    • F04D5/002—Regenerative pumps
    • F04D5/008—Details of the stator, e.g. channel shape

Definitions

  • This invention relates to a side channel centrifugal pump with a side channel open to an open impeller wheel and ilow baille rribs in the side channel.
  • a side channel centrifugal pump with the side channel open to an open impeller wheel formed from straight or singly curved vanes is obtained, which does not have the disadvantages mentioned, but still has in the range of the lower delivery ilows a downward ⁇ deflection of the delivery capacity and power absorption curves.
  • baille rib or ribs viewed radially, only in the central zone of the side channel and to leave free in each case in the inner and outer zone of the side channel about a quarter of its radial extent.
  • ribs are provided in the side channel, they preferably extend inclined to the impeller wheel hub, viewed in the delivery direction, with a slight curvature outwards.
  • the characteristic curve of the pump can be affected, that is t-he point can thereby be determined starting from which the delivery capacity curve and the power absorption curve rise more flatly.
  • a further proposal of the invention likewise envisages as simple as possible a 'construction of the foundry pattern, by the free longitudinal edge or edges of the rib being made to extend parallel to the plane of the impeller wheel.
  • FIGURE 1 shows the characteristic curve of a pump with and without baille ribs in the side channel
  • FIGURE 2 shows the power requirement of the pump
  • FIGURE 3 is a view of the side channel component of a vertical pump embodying the invention with a number of baille ribs in the side channel,
  • FIGURE 4 shows a cross-section through the side channel component represented in FIGURE 3, taken along the section line 4 4,
  • FIGURE 5 is la view of the side channel component of a pump embodying the invention with only one rib extending concentrically to the side channel, and
  • FIGURE 6 is a cross-section through the side channel component represented in FIGURE 5 taken along the section line 6 6.
  • FIGURES l and 2 the values Q-H or O'N for a pump wit-hout baille ribs in the side channel are shown in dashed line, and the Values for a pump with baille ribs in the side channel are shown in sol-id line.
  • FIGURES 3 and 4 are views of a side 10 of a casing 12 for an impeller wheel 14 (shown diagrammatically).
  • the side has a channel component having a multiplicity of baille ribs, in which the suction and pressure slots or apertures are arranged on the same side of the impeller Wheel.
  • the impeller wheel 14 is of conventional construction and has a rotor 16, which is rotatable, and is provided with radially extending blades 18 that sweep over the side 10.
  • the side channel 1 is deilned by a concave surface in the side and is bounded externally by a contour or side portion 2 and inwardly by a contour or side portion 3 and has a bottom portion.
  • the delivery liquid arrives through a suction aperture 4 and discharges through la pressure aperture 5.
  • the concave surface channel has an abutment end 1a which communicates with the suction intake aperture 4 and an abutment end 1b which communicates with the outlet aperture 5.
  • ilow baille ribs 6 which exert the same advantageous eilect on the characteristic curves of the pump as already described.
  • Each rib has a leading edge 6a and, downstream from the leading edge, a trailing edge 6b.
  • the ribs extend from the bottom of the channel about over half to three quarters the depth of the concave surface channel 1.
  • the bafe ribs 6 are arranged only in the radially central zone of the side channel and a free space or zone is provided radially outwardly and inwardly of the ribs in the side channel of each case.
  • the free longitudinal edges 6a of the ribs extend parallel to the plane of the rotor.
  • a free space likewise exists between the end of the suction aperture and the beginning of the rst baffle rib in the side channel, which free space is equivalent t-o at least two/three vane pitches of the impeller wheel, in order not to disturb the ow conditions in the suction slot of the pump.
  • a space is left free between the last baffle rib in the side channel 1 and the pressure aperture 5, which space is to be equivalent to at least about one to two vane pitches.
  • FIGURES 5 and 6 show a casing and channel arrangement identical to that of FIGS. 3 and 4 (s-o that like reference numerals are used to refer to the same parts) except that only one rib 7 is provided extending concentrically to lthe side channel.
  • a free space as described above remains between the end of the suction aperture 4 .and the beginning of the rib 7 and also between the end of the rib 7 and the beginning of the pressure aperture 5.
  • the rib 7 has a free longitudinal edge 7a spaced from the impeller wheel (not shown but the same as that shown in FIG. 4).
  • the sizes and if requisite the number of the ribs to be provided must be adapted in this connection to the size .and shape of the side channel and may vary according to different pump sizes.
  • a centrifugal pump comprising a rotatable impeller wheel having a rotatable rotor and vanes radially extending from the rotor, a casing formed as a body of revolution and having a side facing the impeller wheel, said side being formed with an arcuate channel concentric to the axis of the rotor and open to the vanes, said vanes dehning pockets opening to the channel, said channel being formed substantially concave in the side of the casing and being defined by a substantially concave surface and being yspaced away from the vanes in adirection longitudinally parallel with the axis of rotation of the rotor, said channel having closed ends, one of the ends of said concave surface channel being in communication with an intake suction aperture formed in the casing and the other end of said concave surf-ace channel being in communication with an outlet pressure aperture formed in the casing, said concave surface channel having a bottom portion and opposing side portions, at least one flow baffle rib positioned in the concave surface
  • each of said ribs being curved and the ribs being spaced apart circumferentially in the concave surface channel and having outer longitudinal free edges which lie in a common plane.
  • said ribs include a rst rib adjacent the intake aperture and a last rib adjacent the outlet aperture, said rst rib being spaced from the intake aperture a distance of approximately three vane pitches of the impeller wheel and the last rib being spaced from the outlet aperture a distance of approximately two vane pitches of the impeller wheel.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
US407498A 1963-10-31 1964-10-29 Pumps Expired - Lifetime US3280752A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DES0088135 1963-10-31

Publications (1)

Publication Number Publication Date
US3280752A true US3280752A (en) 1966-10-25

Family

ID=7514254

Family Applications (1)

Application Number Title Priority Date Filing Date
US407498A Expired - Lifetime US3280752A (en) 1963-10-31 1964-10-29 Pumps

Country Status (5)

Country Link
US (1) US3280752A (de)
CH (1) CH417341A (de)
GB (1) GB1074796A (de)
NL (1) NL147515B (de)
SE (1) SE218138C1 (de)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4921705A (de) * 1972-06-21 1974-02-26
US3804547A (en) * 1971-04-30 1974-04-16 Sihi Gmbh & Co Kg Lateral canal pump
JPS4977213A (de) * 1972-11-27 1974-07-25
US4376613A (en) * 1977-03-31 1983-03-15 Siemens Aktiengesellschaft Side channel compressor
US5281083A (en) * 1991-06-18 1994-01-25 Hitachi, Ltd. Vortex flow blower
US20080056886A1 (en) * 2006-08-31 2008-03-06 Varian, S.P.A. Vacuum pumps with improved pumping channel cross sections
EP3771829A1 (de) 2019-07-29 2021-02-03 Schwäbische Hüttenwerke Automotive GmbH Fördervorrichtung mit einem seitenkanal- oder peripheralgebläse

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE581808C (de) * 1931-05-07 1933-08-03 Richard Behrendt Partiell beaufschlagte Fluegelradpumpe
US2015200A (en) * 1931-01-12 1935-09-24 Spoor Willem Lodewijk Joost Rotary pump
CA448265A (en) * 1948-05-04 Louis Frick Harold Multi-impulse blower
US2923246A (en) * 1951-10-31 1960-02-02 Chandler Evans Corp Vortex pump

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA448265A (en) * 1948-05-04 Louis Frick Harold Multi-impulse blower
US2015200A (en) * 1931-01-12 1935-09-24 Spoor Willem Lodewijk Joost Rotary pump
DE581808C (de) * 1931-05-07 1933-08-03 Richard Behrendt Partiell beaufschlagte Fluegelradpumpe
US2923246A (en) * 1951-10-31 1960-02-02 Chandler Evans Corp Vortex pump

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3804547A (en) * 1971-04-30 1974-04-16 Sihi Gmbh & Co Kg Lateral canal pump
JPS4921705A (de) * 1972-06-21 1974-02-26
JPS4977213A (de) * 1972-11-27 1974-07-25
US4376613A (en) * 1977-03-31 1983-03-15 Siemens Aktiengesellschaft Side channel compressor
US5281083A (en) * 1991-06-18 1994-01-25 Hitachi, Ltd. Vortex flow blower
US20080056886A1 (en) * 2006-08-31 2008-03-06 Varian, S.P.A. Vacuum pumps with improved pumping channel cross sections
EP3771829A1 (de) 2019-07-29 2021-02-03 Schwäbische Hüttenwerke Automotive GmbH Fördervorrichtung mit einem seitenkanal- oder peripheralgebläse

Also Published As

Publication number Publication date
DE1528822B2 (de) 1973-01-18
NL147515B (nl) 1975-10-15
CH417341A (de) 1966-07-15
SE218138C1 (sv) 1968-01-09
NL6412635A (nl) 1965-05-03
GB1074796A (en) 1967-07-05
DE1528822A1 (de) 1969-12-04

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