US1769647A - Fluid pump - Google Patents

Description

w. J PRESS FLUID PUMP July 1, 1930.

Filed Jan. 15, 1927 2 s t sh t l \NVEHTOR yum J. V BY Q K h-reauiv.

July l, 1930. w, J PRESS I 1,769,647

FLUID PUMP Filed Jan. 15, 1927 2 Sheets-Sheet 2 TTOENEY.

Wmum ass. M W

Patented July 1 1930 UNITED STATES WILLIAM J. PRESS, OF OTTAWA, OIiTTARIO, CANADA FLUID PUMP Application filed January 15, 1927. Serial No. 161,850.

The present invention has relation to improvements in a fluid pump appertaining particularly to one of that character cmodying a rotor and a stator casing, in which the rotor is eccentrically mounted, having inlet and discharge ports for the fluid.

An object is to provide a pump of this nature with a rotor having pro elling vanes and fluid receiving pockets a out its periphery.

A further object is to provide a Jump as described with a rotor having perip ierial fluid,carr ing pockets s0 configuratedas to permit 0 the insertion of the pro elling vanes which being thus interchangeab e may be advanced from their normal pockets to the fluid pockets when the original vane accommodating pockets become worn thus doubling the length of time that the rotor can function satisfactorily, the vacated normal vane accommodating pockets serving then as fluid carrying pockets.

A further object 1s to provide a fluid ump wherein the stator casing encloses an annular liner sweated in place having perforations to register with both the inlet and outlet ports, the vanes of the eccentrically mounted rotor being reciprocally mounted in longitudinally extending radial pockets therein and spring urged into continual contact with the liner.

A still further object is the provision of a fluid ump capable of starting more'rapidly and c aracterized by augmented efficiency, durability, quietness and smoothness of operation and simplicity of design and con-' struction all of which contribute to the production of a device that is of. commercial worth. To the accomplishment of these and related objects that may appear, as the description proceeds the invention resides in the construction, combination and arrangement of the several co-o crating parts as shall be hereinafter more ully described, il-

lustrated in the accompanying drawings and pointed out in the claims hereunto appended.

. The invention can be most clearly described and will be best understood when reference is bad to the accompanying drawlngs, forming a part of this disclosure and wherein like characters indicate like parts throughout the several views.

In the drawings z- Fig. 1 is a side elevation of the device;

Fig. 2 is an end elevation thereof;

Fig. 3 is a vertical section on the line 33 of Fig. 2;

Fig. 4 is a section at right angles thereto as on the line 44 of Fig. 1; and v Fig. 5 is a detail of the metal liner.

The present embodiment of the invention has been particularly designed for use in mixing and feeding fuel to an oil burning furnace, both oil and air enterin by the inlet port and an atomized blast of gaseous fuel being blown from the outlet.

The stator casing 6 having a removable side plate 7 includes an open inlet pipe 8 and an outlet pipe 9, the former of which receives a small oil feed pipe 10 that enters it radially. A metal liner 11 in the form on an annular bushing rin is sweated into the casing 6 and perforated opposite the opening. of the inlet and outlet ipes 8 and 9 respectivel as at 12, thus giving continuity to the inner circumference of the casing and tending to break up or atomize the fuel both entering and leaving. A rotor 13, carried by an eccentrically positioned drive shaft 14, has a plurality of deep longitudi- .nally extending radial grooves or pockets 15 in which radiall reciprocable vanes 16 are mounted. The ases of these pockets are recessed as at 17; and the registering parts of the inner ends of the vanes correspondingly recessed as at 18 to accommodate therebetween compressed coil springs 19 that act to urge the vanes 16 into continual contact with the linin ring 11.

Between eacll adjacent pair of vanes, the rotor 13 is provided with a fuel pocket or reservoir 20' intended to carry a quantity of the fuel when above the horizontal plane of the rotor axis thus maintaining at all times a reserve su ply of fuel for instant startin and contributing in a material and decide. way to more adequately suppl the outlet and adding to the-conservation 0 fuel when starting.

. the

oil pockets 20 are shown as similar to the vane accommodating pockets 15, the advantage thus gained bein that the vanes 16, when their original poc ets become worn due to the constant turning of the rotor in one direction with the accompanying rubhing of the vanes against the same side wall of ockets, can be advanced to the fluid carryin pockets when the original vane accommo ating pockets become the fluid carrying pockets or resorvoirs whose worn condition does not impair or lessen their utility as such.

As the structural details of my invention have been thoroughly described, there now follows a brief reference to its use and operation.

On the starting of the rotor 13, actuated by the drive shaft 14 from any suitable source, a suction is created in the open inlet 8 through which a stream of air is permitted to enter that in passing acts to induce a flow of oil from the feed pipe 10; it being obvious that this oil feed is controlled by a float or other suitable valve as is common practice and old and well known. This fuel comprising oil and air in predetermined quantities is drawn into the pump through the perforations 12 in the liner 11 during which it is partially mixed and atomized due to its heavy impact with the perforated ring;

The rotor vanes 16 held in contact with the liner bythe springs 19 maintain an almost fluid tight relation because of the presence of the fuel of high lubricant qualities V so that the rotor is exceedingly eiiicient in operation and the completely atomized fuel is blown out of the outleti9 at a high velocity where the impact with the perforated liner more thoroughly a'gitates the mixture.

As is usual in this type of pump there is considerable pressure about the outlet, as the fiuidis pumped in this way, and so when approaching the outlet the oil reservoirs 20 are filled with the mixture, which supply the maintain while'the rotor isin motion an on its cessation those-pockets or reservoirs remaining above the horizontal plane of its axis retain their full complement that tends to condense on the leakage of pressure when the pump is idle. This supply isthus obviously instantly available on the starting of the rotor, acting to immense advantage in providing the initial supply of fuel for ignition and lubricating "the lineriand vanes whose efiicacy is increased by 'the fluid tight seal resulting between than.

description and many apparently widely diiferent embodiments of my invention constructed within the scope of the appended claims without departing from the spirit or scope thereof, it is intended that all matters contained in the said accompanying specification and drawings shall be inter- ,preted as illustrative and not in a limited sense. I

Having thus described my invention what I claim as new and desire to secure by Letters Patent is l. A fluid pump including a stator casing; a rotor mounted eccentrically therein and having equally spaced uniform alternating fluid carrying and vane accommodating radial pockets of uniform capacity; reciprocally operating vanes working in the said vane accommodating pockets and adapted to be changed to the said fluid carrying pockets and thus permitting the vacate pockets to then serve as the fluid carrying pockets; a lining within said casing and provided with spaced perforations opposite the intake and discharge ports of said casing; and a spring for each of said vanes to constantly urge the same into contact with said lining.

A fluid pump including a stator casing; a rotor mounted eccentrically therein signature. 7

WILLIAM J. PRESS.

From the foregoing description taken in '7 connection with the accompanying drawings, it'will be manifest that a fluid pump is provided which will fulfill all. the necessary re uirements of suchla device, but as manv c anges could 'be made in the above

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