US633732A

US633732A - Centrifugal pump.

Info

Publication number: US633732A
Application number: US67530098A
Authority: US
Inventors: Gomer W Price
Original assignee: Individual
Current assignee: Individual
Priority date: 1898-03-26
Filing date: 1898-03-26
Publication date: 1899-09-26
Anticipated expiration: 1916-09-26

Description

Patented Sept. 26, I899.

P w m nu E 6 C U NAM. w w h m (No Model.)

,To aZZ whom it may concern: 1

' shown in the dr awings,1

UNITED STATES PATENT OEE CE,

GOMER. w. PRICE, 'OF SAN FRANCISCO, CAL FORNIA YCENTRIFUGAL PUMP.

SPECIFICATION forming part of Letters Patent No. 633,732, dated September 26,

Application filed March 2,"l .898,

Beit known that I, GOMER IV. PRICE, a citizen of the United States, residingat San Francisco, county of San Francisco, and State of California, have invented certain new and useful Improvements in Genififugal'P umps; and I herebydeclare the following to be a full, clear, and exact description of the same, reference being had to the accompanyingdrawings, forming a part of'this specification.

My invention relates to centrifugal pumps for raising and forcing fluids and to an im-' proved manner of constructing and operating such pumps. I

My improvement consists in so constructing and arranging the impellers of centrifu-i gal pumps that they are relicvodof the resistance caused by the friction of the water on. their sides, the water between the impellers and pump-casing being at the sides is discharged therefrom by centrifugal and inductive action, so that the impellers, except on their periphery, revolve in air, or in a partial vacuum.

The object of my invention is the avoid ance, in part, of resistance to the rotation of the impellers and consequent saving in the amount of power required to raise or impel water by means of these pumps.

Referring to the drawings herewith and forming a part of this specification, Figure I is a side view, partially in section, of acentrifugal pump constructed according to my invention. Fig. II is an end view of hig. I

.with' the suction-pipe and side plate removed. I Fig.

III is a section through the impeller on the line was in Fig. II, showing the outlets for water from the sides of the impeller. Fig. IV is a section through theimpeller on the line 1 '1 in Fig. III.

In centrifugal pumps having incased impellers a principal source of resistance and loss of the driving-power, especially at high speed, arises from the friction of the sides of the impellers on the surrounding water, or in pumps when open or vane impellers are employed by friction of the revolving water against the sides of the pump casing or shell, such friction beingthe same in either case.-

To avoid this friction and consequent loss of power, I construct centrifugal pumps as being a main frame,

- leys5 or in any. G is the suction-pipe, and 7 the discharge- I igs. III and IV.

1899. Serial n. 675,300. on model.)

parts are supported, 2 the pump casing or volute for collecting and discharging the water, and 3 the impeller mounted on the spindle 4, driven by the pulother suitable manner.

on which the various pipe.

'8 are the main ducts or passages in the impeller, through ,which the water flows from the inlet at 9, the impeller being of the in-' closed or incased type and provided with vanes 10 and 11011 the outside-or next to the' casing Thepassages l3'between the vanes 10 and 1l open obliquely inward from the sides of the impeller 3, entering the passage 8 near the point of discharge, as shown in To prevent the entrance of water between the casing and the front or intake side of the impeller 3, I provide a nipple or extension on the end of the suction: pipe 6, that projects a short distance within the impeller 3, the running-joint being parallel to the axis of rotation, as seen in Fig. I,

.so that the inductive'action of the Water rushing outward in the passages 8 prevents backflow tures of .thep-ump correspond to common practice and do not require further descrip The operation is as follows: being filled with water, the impeller 3 is set in revolution, and the water in the passages 8 is dischargedoutward in to the volu te 12 partly by tangential energy, but'mainly by centrif 'ugal force," At the same time the water at the sides of the impeller 3 is driven out by the vanes 10 and Hand is discharged through the apertures 13, aided, however, by the inductive action of the waterin the passages 8, and as there is no supply tothese spaces at the sides of the impeller they fill or r artially fill with air, so the impeller 51 is subject to air friction only on its sides, thus relieving it of a principal source of resistance. This action of the-impeller and of the water at its sides hasbeen ascertained by means of apertures temporarily made through the sides of the casing and is a constant result of The impeller 3 being thus driven Withoutthe usual resistance the construction shown.

of water friction on its sides, consumes less power for a given work and has otherwise all The casing 2 around thenipple 15., Other fearoo' ihe required functions, the same as if ini mersed in the Water-all over the exterior surfaces.

Having thus explained and described the nature and objects of my invention and the manner of constructing and applying the same, What I claim as new, and desire to secure by Letters Patent, is- I In a centrifugal pump, a volute-easing 2;

an inelosed impeller 3 within said casing provided with interior water-passages 8, vanes 10, ll on the outer-sides of said impeller,

sweeping the walls of said casing, and passages 13 through the walls of the impeller,

connecting the exterior spaees between the said vanes with the said interior water-passages near the point of discharge, whereby the centrifugal action aided by the indnc-' tive action of the outwardly-passing current tends to diminish the contents oi the said spaces and reduce the friction between the impeller and the casing, substantially as specified. I

GOMER- IVV. PRICE.

Vitnesses:

H. SANDERsoN, H.v W. BROWN.