US944864A - Casing for centrifugal pumps and blowers. - Google Patents

Casing for centrifugal pumps and blowers. Download PDF

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Publication number
US944864A
US944864A US39353707A US1907393537A US944864A US 944864 A US944864 A US 944864A US 39353707 A US39353707 A US 39353707A US 1907393537 A US1907393537 A US 1907393537A US 944864 A US944864 A US 944864A
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United States
Prior art keywords
casing
chamber
blowers
centrifugal pumps
annular
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Expired - Lifetime
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US39353707A
Inventor
Heinrich Holzer
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.)
VEREINIGTE MASCHINENFABRIK AUGSBURG MASCHINENBAUGESELLSCHAFT NUERNBERG AG
Ver Maschinenfabrik Augsburg Maschb Ges Nuernberg A G
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Ver Maschinenfabrik Augsburg Maschb Ges Nuernberg A G
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Application filed by Ver Maschinenfabrik Augsburg Maschb Ges Nuernberg A G filed Critical Ver Maschinenfabrik Augsburg Maschb Ges Nuernberg A G
Priority to US39353707A priority Critical patent/US944864A/en
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Publication of US944864A publication Critical patent/US944864A/en
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
    • F01D9/00—Stators
    • F01D9/02—Nozzles; Nozzle boxes; Stator blades; Guide conduits, e.g. individual nozzles
    • F01D9/04—Nozzles; Nozzle boxes; Stator blades; Guide conduits, e.g. individual nozzles forming ring or sector
    • F01D9/047—Nozzle boxes

Definitions

  • the casing is composed of an undivided annular body provided with an annular chamber and a cover inserted laterally into this annular body, by means of which the iuid to be driven forward flows radially to the suction aperture through apertures distributed over the periphery of the inner walls of the annular chamber.
  • FIG. 1 One form of construction is shown as an example of the invention in the accompanying drawings in Figures 1 3 Fig. l being a section on the line A-B of Fig. 3; Fig. 2, a section on the line C-D of Fig. 3; and Fig. 3, a cross section of the casing of the machine.
  • a cover c which closes one side of the blade chamber Y), is inserted in the annular cast body a.
  • a fore chamber d is arranged in front of the vane or blade hamber b, which chamber Z is placed in c mmunication with the annular chamber f by means specification bf Letters Patent.
  • the fluid to be acted upon is introduced from beneath through the cast body a, and first passes into the annular chamber f and is then conveyed through the apertures c into the fore chamber 0l, in order from here to be uniformly fed to the suction aperture of the vane or blade chamber b.
  • This improved arrangement of casing has, in addition to the advantages hereinbefore mentioned, the further advantage, that by reason of the side position of the separating joint g, the external wall e' of the pressure chamber on which the greatest pressure is exerted, is unbroken along its entire length and consequently frictiolnal resistances are comparatively small as compared with ordinary casings which are divided in the plane of the wheel, or in a plane passing through the wheel axis.
  • the cover c is formed as a body of circular cross-section, it may be easily tightly packed against the annular body a, so that a reliable joint between the two parts is obtained.
  • I declare that'what I claim is ai centrifugal pump comprising a horizontally arranged turbine shaft, a casing divided into an inner and outer part, thek inner part having wedge shaped. guide chambers therein, contracting toward the middle and distributed around the shaft, and the outer part having an annular inlet chamber communicating with the outer ends of said wedge shaped chambers, and a second chamber communicatingl with the inner ends of said wedge shaped chambers, and a runner mounted on the shaft and lo'- cated within the said second chamber, said second chamber having an outlet therefrom.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)

Description

H. HOLZER.
GASING FOR GBNTRIPUGAL PUMPS AND BLOWERS.
APPLICATION FILED SEPT. 18, 1907.
Patented Dec. 28, 1909.
\ Nimh/OR' HEIN/21 CH w.. TNESS E HOLzE- K HEINRICH HOLZER, OF NUREMBERG, GERMANY, ASSIGNOR TO VEREINIGTE MASCHI- NENFABRIK AUGSBURG 1v1:ASCHINENBAU'GrESELIJSCI-IAFI NUREMBERG, GERMANY.
NRNBERG A. G. or
CASIN'G GEEN''.II'IRIEUGrAL PUMPS AND BLOWERS.
To all whom it may concern:
Be it known that I, HEINRICH I-IoLzER, engineer, subject of the German Emperor, residing at'Nuremberg, Bavaria, Germany, have invented new and useful. Improvements in and Connected with Casing's for Centrifugal Pumps and Blowers, of which the following is a specification.
In known constructions of centrifugal pumps and blowers, the feed of the fluid to be driven forward is effected either in an axial direction by means of a fore chamber4 arranged directly in front of the central suction aperture or by means of a passafre openingradially to the fore chamber of the machine. By the first form of construction a uniform feed of the fluid is obtained, but also a considerable length of construction of the apparatus is necessitated. The second form of construction 'mentioned indeed avoids this drawback,
but a uniform feed of the iuid, to the suction aperture, is prevented, as the part of the suction aperture lying next to the mouth of the feed passage is fed to a greater extent than the part lying farther away.
In order to avoid the defects inherent in both forms of construction, in the present invention the casing is composed of an undivided annular body provided with an annular chamber and a cover inserted laterally into this annular body, by means of which the iuid to be driven forward flows radially to the suction aperture through apertures distributed over the periphery of the inner walls of the annular chamber.
One form of construction is shown as an example of the invention in the accompanying drawings in Figures 1 3 Fig. l being a section on the line A-B of Fig. 3; Fig. 2, a section on the line C-D of Fig. 3; and Fig. 3, a cross section of the casing of the machine.
A cover c which closes one side of the blade chamber Y), is inserted in the annular cast body a. A fore chamber d is arranged in front of the vane or blade hamber b, which chamber Z is placed in c mmunication with the annular chamber f by means specification bf Letters Patent.
Application filed September 18, 1907.
Patented Dec. 28, 1909.
Serial No. 393,537.
of apertures e formed in the cover c and in the annular body a. The fluid to be acted upon is introduced from beneath through the cast body a, and first passes into the annular chamber f and is then conveyed through the apertures c into the fore chamber 0l, in order from here to be uniformly fed to the suction aperture of the vane or blade chamber b.
This improved arrangement of casing has, in addition to the advantages hereinbefore mentioned, the further advantage, that by reason of the side position of the separating joint g, the external wall e' of the pressure chamber on which the greatest pressure is exerted, is unbroken along its entire length and consequently frictiolnal resistances are comparatively small as compared with ordinary casings which are divided in the plane of the wheel, or in a plane passing through the wheel axis. As also the cover c is formed as a body of circular cross-section, it may be easily tightly packed against the annular body a, so that a reliable joint between the two parts is obtained.
I declare that'what I claim is ai centrifugal pump comprising a horizontally arranged turbine shaft, a casing divided into an inner and outer part, thek inner part having wedge shaped. guide chambers therein, contracting toward the middle and distributed around the shaft, and the outer part having an annular inlet chamber communicating with the outer ends of said wedge shaped chambers, and a second chamber communicatingl with the inner ends of said wedge shaped chambers, and a runner mounted on the shaft and lo'- cated within the said second chamber, said second chamber having an outlet therefrom.
In testimony whereof I have signed my name to this specification in the presence of two subscribing wit-nesses.
HEINRICH HOLZER.
US39353707A 1907-09-18 1907-09-18 Casing for centrifugal pumps and blowers. Expired - Lifetime US944864A (en)

Priority Applications (1)

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US39353707A US944864A (en) 1907-09-18 1907-09-18 Casing for centrifugal pumps and blowers.

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US39353707A US944864A (en) 1907-09-18 1907-09-18 Casing for centrifugal pumps and blowers.

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US944864A true US944864A (en) 1909-12-28

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3217654A (en) * 1963-08-08 1965-11-16 Springer Frederick Howard Combination screw and centrifugal submergible pump

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3217654A (en) * 1963-08-08 1965-11-16 Springer Frederick Howard Combination screw and centrifugal submergible pump

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