US1178651A - Pump. - Google Patents

Description

M. LEBLANB.

PUMP. v

APPLICATION man SEPT. 2 1909.

.R. I 0 C 6 T a A N W F M m w m; m m R w 0 m P M M. LEBLANCL PUMP.

APPLICATION FILED SEPT. 20. I909- 1,1'78,T651. I Pafented Apr. 11,1916.

3 smzsrs-snan 2.

HAFA/TTORNEY 1N .Fsacr.

I INVENTOR kk BY M. LEBLANC.

PUMP.

APPLICATION FILED SEPT. 20, 1909.

wwme Patentd Apr. 11, 1916.

3 SHEETS-SHEET 3- midd e.

MAURICE LEE-LANG, OF PARKE, TERA'NCE, ASSIGNGE LEXPLOITAEFEDN HES FROCEBES WEfiTING'HOUSE-Ii:

T ELQCIEEETE ANON'YlIIE IQUB. EBLAIIQU, 9F PARIS, FRANGE.

PUMP.

Specification of Letters i'atcnt.

Patented Apr-.11, 1918.

Application filed. September 20, 1909. Serial No. 518,678.

' tic fluid pumps and also to a method of pumping air or other elastic fiuid.

In a co-pending apphcatmn filed by me tor United States Letters Patent,

iatured on February 14, 1911, intolPatent ho. 984,-

27 8) I have described a fluid translating device comprising a partial injection type'of rotatable impeller discharging into a; collecting chamber or combining tube which, in turn, discharges into a diizuser. The device in said application is illustrated as applied to a condensing apparatus. In the device of said application, while the rotatable impeller discharges liquid therefrom in the form of films or leaves, the-cross-sectional area of the combining or collecting chamber is such that the leaves upon, or immediately ar'ter, being formed and rejected into the chamber are probably bro en up into an infinite number of drops, like spray, because in said device the cross-sectional area of the combining or collect ng chamber is such that the leaves or films 1f completely formed at the time they are discharged from the rotatable impeller, can only partially fill or bridge the chamber. In other Words, the chamber s shown as sub stantially circular in crosssection and the liquid projected into one side oi the chamber at most can only assume a fan-like form wh (ch can reach but a small portion of the e1 re wall surface of the ob. mber. As the anor Si Pam or other elastic fluid can escape lrom be wen the SllpCGSSlVQ leaves formed, it is probaole that the leaves either at the time of formation or immediately thereafter are broken up, as before described. It has been found that such a device, while it makes an especially efficient condenser, does not make an air pump such as may be desired.

In still another co-pending zi'pplication filed by me on September 141, 1909, Serial h uinber 517,691 for United States Letters Patent 1 have disclosed an air or other elastic fiuic pump in which such a partial injection type of rotatable impeller is utilized and in this device, by means of making the cross-sectional area of the combining or col- France,,

lecting chamber such that the liquid leaves discharged by the rotatable impeller substantially fill or bridge it'as a. piston does a cylinder, I have been enabled to obtain a much more efilcient air or other elastic fluid pumpthan the device of said first application makes. In the device, however, of said second pending application, I utilize substantially the same form of blades for the rotatable impeller as in the device of the first application and an object of this invention is to produce an air or other elastic fluid pump which will be superior to and more eiiicient than the device of said second application. In a general way, the device of said second application, and the device of this applica tion are the same, but in certain important details they differ.

The method of pumping air in accordance with this invention, which may be carried out by means of the device hereinafter described or by means of other devices than the one here described, broadly consists in con fining air r other elastic fluid between adjacent leaves of a rapidly moving column or stream composed of a succession of liquid leaves, whereby the air or other elastic fluid is caused to move with the column and then in converting the velocity of the column into pressure. A

In the drawings accompanying this application and throughout which similar elements are denoted by like characters: Figure 1 is a view in sectional elevation taken on the line 11 of Fig. 3 of an air or other elastic fluid pump embodying this invention;

Fig'. 2 is a sectional view taken on line 2-2 of Fig. 1, locking in the direction of the arrow; and, Fig. 3 IS a top plan view of said ump.

The pump, l' roadly,.consists of a rotatable impeller wheel provided with a row of axially-disposed blades. A distributer is located within the inner periphery of the row of blades and adapted to receive water or other liquid from some suitable source and to deliver itto a number of the hla des less than the total number. T he rotatable impeller,- since the dist ilmler distributes Water or other liquid to. a number of the blades of the impeller less than the total number,is therefore a partial injection impeller. The liquid thus distributed to the blades is projected by them at ahigh velocity and in the form of extremely thin sheets across a conduit or channel at a point between the inlet and ll .3 outlet of the channel. The channel or conduit has an inlet for elastic fluid to be pumped, a combining tube or collecting chamber for the propelling liquid and the fluid to be pumped and a diffuser wherein the stream formed of the liquid and fluid is compressed and from the outlet of which it is discharged. The conduit or channel at the point oi? delivery of liquid from the blades is of such cross section and contour relative to the sheet or film of liquid discharged into it that the film completely, or substantially completely, blocks it off as a piston does a cylinder. The bladed wheel or impeller is rotated by any suitable means,

such as a turbine, electric motor or reciproxating engine. at such a speed that theperipheral speed of the blades will give to the impelling liquid a high velocity and Will project the leaves or films of liquid across the conduit and toward and through the diffuser. By making the conduit or channel as I have in the present case of such cross section that the liquid leaves or films can complet ly, or substantially completely, fill the channel or span it as a piston does a cylinder, I find that X can approach the theoretical quantity of fluid which can be moved to a. given quantity of liquid at a given speed o'l liquid and I find that I can discharge the pump against a considerable head.

I find. that the pump is especially applicable as an air pump for condensers of the.

surface, jet and barometric types and that by means of the same I am able to produce in such condensers the theoretical vacuum under wide ranges of conditions.

The pump preferably consists of a wheel or disk 5 mounted upon a shaft 6 and provided with an annular row of axially-disposed blades 7. The outer or free ends of the blades are provided with shroud 8 While the inner ends are secured to the wheel by means of a foundation nieinber- 9. The inner walls of both the shroud and the Foundation member are straight and pa ral lcl one to the other as shown at 10. The shaft 6 is journaled in suitable bearings 11 and 12 and passes through stuffing boxes 13 i and 14, the bearings and stutling boxes be ing carried by the side plates or flanges l5 and 16 of the device. A central body member 17 is secured to the side plates or flanges 15 and 16 by means of two sets of bolts 18 and 19.

The side plate or flange 1.6 is formed with a chamber provided by the outer wall of the side and an inner wall. 20 joined to the side by means of a wall 21 which lies just within the row of blades 7. This chamber, which I will term the distributing chamber, is provided with inlet 21 "for water or other impelling liq. '3. and an outlet or distribut ing' spout or nozzle 22 which simultane ously delivers Water to a. number of blades of the wheel. less than the total nu ber. In the apparatus disclosed in drawings it is formed so that it may deliver to four or five blades at one time.

It will be seen that by loosening bolts 18, which pass through a retaining flange L"?- and into the inner or bodyportion 17,

1c plate 16 c'arrying the distributing chamber may be rotated about its axis and the distributing spent 22 adjusted. to the prewar position and by tightening these, the r tributing spout may be locked in proper position.

Carried by the central or body portion is the channel or conduit before i and composed of the inlet chamber .2 collecting chamber or combining tube 2;) and the diffuser 26. The collecting chamber or combining tube 2 is formed in the nature of a bushing 27 secured within the main casting 17. As the. liquid discharge the rotatable impeller contacts-r5 walls of this chamber, it is preferhbl in,the nature of a bushing so as to be renewable if necessary.

In order to prime the pump, an inject device located adjacent to the inlet the diffuser 26. This device consists a cone 2S seated between the eastin and the ditluser and which forms the inlet end of the di'lt'usu'. Around this cone an annular chamber is left and this is provided with an inlet 30 for sites water under pressure as is desired, a: means of this device the pump may primed.

In accordance with the provisions of the patent statues, I have described the principle of operation ot' my invention, with the apparatus which I new 0 i to represent the best embodiment but I desire to have'it understood, apparatus shown is only illustr. that the invention can be carr? other means.

What l claim is:

l. in. an air or other elastic a chamber provided with an i. and an outlet, a bladed impell r in." so as to project liquid at a relatively velocitv in the form of films or said chamber between the inlet and on. thereof and an adjustable distributer delivering liquid to a number of the of said impeller less than t p 2. ln an air or other elastic fluid pen a chamber provided with an rhllet and an outlet, an impeller piovided blades and arranged so as to project ii me at a relatively'high velocitydn s vidcd state into said chamber saw inlet and outlet thereof, an adjiigf sl tributer for delivering llquidlfto s;

a collecting and combining chamber, a diffuser communicating therewith, a rotatable impeller adapted to discharge liquid into said chamber and an adjustable nozzle for delivering liquid to said. impeller. 4

at. In an air or other elastic fluidpump,

a-collecting and combining chamber, a diffuser in line therewith, a bladed rotatable impeller and adjustable means for distributing liquid to a number of blades of said impeller less than the total number.

5. In an air or other elastic fluid pump, a collecting and combining chamber, a diffuser, a rotatable impeller and adjustable means located within the perlphery of said impeller for distributing liquid to a number of blades thereof than the total number.

6. In a fluid translating device, a chamber having a fluid inlet and a fluid outlet port, a combining tube and a diffuser communicating with the outlet port, and means for projecting liquid at a relatively high velocity into the combining tube, and through the diffuser, comprising an impeller, an annular row of laterally projecting'blades mounted 011v and located concentrically 'with the impeller, a casing'for the impeller comprising a central body portion surrounding said impeller, end plates mounted .on opposite sides of said central portion one of which is adjustable and is provided with a liquid distributing chamher and an inlet communicating with the chamber, and a distributer for delivering liquid from the chamber to the blades located Within and communicating with the chamber, and mounted on said adjustable end plate.

7. In a fluid translating device, a chamber provided with an inlet for fluid and'an outlet, an impeller having an annular row of-laterally projecting blades mounted thereon for projecting liquid into said chamber and; for

discharging it through the outlet, a casing for the impeller having an adjustable end plate provided with a liquid distributing chamber and a liquid inlet communicating with the chamber and a liquid distributer for delivering liquid to the blades mounted on said adjustable end plate and communicating with said chamber.

8. In a fluid translating device, a chamber provided with an inlet for fluid and an'outlet, an impeller, an annular row of blades mounted on the impeller, a casing for the impeller'having a liquid distributing chamber formed therein and provided With a liquid inlet, an adjustable end plate :Eorming a Wall of the chamber and an adjustable distributer for delivering liquid from the chamber to said blades mounted on said end plate.

. In testimony whereof, I have hereunto subscribed my name this third day of September, 1909.

MAURICE LEBLANG. Witnesses:

ETIENNE SOULIE, P. LEBLANC.

Images