US700276A

US700276A - Cooling means for rotary motors.

Info

Publication number: US700276A
Application number: US6971901A
Authority: US
Inventors: Lida Wilson
Original assignee: Individual
Current assignee: Individual
Priority date: 1901-07-25
Filing date: 1901-07-25
Publication date: 1902-05-20
Anticipated expiration: 1919-05-20

Description

No. 700,276. Patented May 20, l902.

. L. WILSON.

- COOLING MEANS FOR ROTARY MOTOR S.

(Application filed July 26, 1901.)

(No Model.) 5 Sheets-Sheet I.

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(Application filed July as, 1901.

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I L. WILSUN. COOLING MEANS FOR BUTARY MOTORS.

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UNITED STATES PATENT OFFICE.

LIDA WILSON, OF BROOKLYN, NEW YORK.

COOLING MEANS FOR ROTARY MOTORS.

SPECIFICATION forming part of Letters Patent No. 700,276, dated May 20, 1902.

Application filed July 25, 1901. Serial No. 69,719. (No model.)

motors driven by the impact of hot gas pro duced by the combustion or explosion of mixtures of air or oxygen with ahydrocarbon,'hydrogen, or monocarbon oxid fluid.

For practical reasons it is desirable to have the explosion or combustion. chamber as near as possible to the points of impact on the blades of the motor; but owing to the great heat evolved by the combustion of the gases the motor-blades and motor disks or rings and casings exposed to their action would rapidlybe injured unless means are provided to modify the heat of the gases before impact thereon or to cool the blades, disks, or rings and other parts of the motor after such impact. I

Air has been used to cool the revolving parts; but the heat-carrying capacity of air is so very'low, compared with that of water, that it is very inefficient for such a purpose, and the use of water is attended with difficulty, as any impurities in the water will deposit a crust or scale upon the revolving parts and cause them to get out of balance and retard this movement. The crust or scale is also liable to become loosened from time to time and interfere with the rotations. To secure an efficient cooling and to avoid such difficulties in the use of ordinary water, I employ pure rain ordistilled water, which is sprayed upon the revolving parts by any wellknown suitable device or by compressed air at a suitable pressure.

should also be cooled by the pure water, which serves as a lubricant and keeps the joint gastight. The shaft maybe protected by spools, as shown, and, if hollow, by an internal circulation of clean fresh or sea water in contact with those parts of the shaft where exposed to the exhaust-gases escaping from the The checks of the casing inwhich the disks or rings revolve;

rotary-motor blades. The temperature of the gases before impact on the blades may be re duced by introducing a liquid which will not deposit a crust or scale, such as pure rain or distilled Water suitably sprayed, either mechanically or by compressed air, into the nozzle or outlet leading from the explosion-chamber tothe motor-blades.

The accompanying drawings illustrate an arrangement of appliances suitable for driving a shaft revolving horizontally; but the arrangement of the parts may be varied to drive shafting placed vertically.

Figure l is a transverse section of a rotary motor provided with myimprovements. Fig. 2 is, alongitudialsection of the primary motor-blades and explosion and coolingapparatus. Fig. 3 is a longitudinal section of the return or exhaust blades and exhaust-chamber; and Fig. 4 is an end view of the motor, exhibi tin g merely the casing, the cooling-pipes, and explosion-chamber. Fig. 5 is a viewof theshaft and motor-wheel detached from its casing, one-half of the wheel being removed to show the spool. Fig. 6 .is an end view of the Wheel shown in Fig. 5, with the disk 5 partly broken away.

a designates the exhaust-jacket, partially surrounded by an air-jacket d. The shaft 12 is formed with bore 9, connected with pipes 71 and t to circulate water therethrough.

The exhaust-jacket a and its surrounding air-jacket cl areattached to a bed-plate g, and the jacket a is provided with outlet 0 for the escape of the exhaust-gases.- Air may be circulated in the air-jacket d by pipes j and it, if desired. The casing f, surrounding the primary motor-blades e, is attached to the bedplate g and maybe formed to serve as a peripheral water-jacket and with cheeks h to form channels-or-guidesfor-the edges of the disks to revolve in. casing f is suppliedjwith inlet and outlet pipes t" to circulate water throughout the same. The motor-wheel is formed with curved primary motor-blades e and with or without curved return-blades e. The blades 6 and e are attached to disks or

plates

1, 2, 3, 4, and 5, of which the disks 1 and 5 are securely and closely attached to the shaft 1) at the opposite edges of the motor-wheel, and the disk 3 is closely attached'to theshaft at the mid- The wa ter-jacket onthe too dle of the wheel. The return-disks 2 and 4 are arranged at opposite sides of the disks 3, but do not extend to the shaft, being connected therewith by arms 11 to permit the passage of the gases, which are caused by this construction to return to the periphery of the wheel to escape. The primary blades 6 are secured between the disk 3 and the opposite disks 2 and 4., while the return-blades e are secured to the outside disks 1 and 5 and to the return-disks 2 and t. With this construction the gases which enter between the primary blades at the periphery of the wheel pass within the edges of the return-blades 2 and 4, as indicated by the curved arrows, and then outwardly through the return-blades e to the exhaust-jacket at. here no returnblades e are employed, the gas passes directly through the space between the arms a to the exhaust-jacket Ct.

The outer or peripheral ends or edges of the primary motor-blades e in Fig. 22 extend as closely as possible to, but without actually touching, the peripheral casing f, and the inner ends or edges of the primary motor-blades e and of the return-blades 6' clear the shaft sufficiently to permit the passage of the gases in the direction of the curved arrows from the primary motor-blades e to the returnblades e or to the exhaust-jacket if the wheel is not provided with exhaust-blades. An increased resisting-surface for the impact of the gas may be formed upon the curved blades by corrugating or ribbing their sides against which the gases chiefly impact in their flow, as shown in Fig. 0, where ribs 6 are illustrated upon the exhaust-blades e. Arrows are shown in the passages between the blades to indicate the direction of the flow of the gases, and it will be observed that the ribs are inclined to meet the impact of flow of the gases, and they would consequently be inclined in the opposite direction upon the motor-blades e, as the gases flow in a reverse direction in passing between such blades 6. Spools Z are applied to the shaft at the opposite sides of the central disk 3, each spool curved from that disk toward the shaft and on the reverse curve away from the shaft to disk 1 and 5, respectively, so as to guide the gases from the respective primary motorblades e to the respective return-blades e or to the exhaust-jacket if there are no exhaustbladcs. The casingf may be cooled bya spray or by a water-jacket, and the latter is divided at the middle of its width to form a channel which admits and guides the edge of the disk 3.

The application of cooling fluid to the edges and inner surfaces of the disks is effected by pipes connected at intervals to the channels or guides in which the edges of the respective disks revolve and to which they are fitted as closely as possible without actually touching.

The blades 0 and the inner surface of the casing f are cooled by jets of pure water supplied through pipes p, arranged at intervals around the casing. Where the pipes to supply pure water pass through the exhaustjacket (1.01 are elsewhere exposed to heat, they may be coated with a non-conducting material, such as asbestos or magnesia, to prevent the conduction of heat to the cooling fluid. The nozzle or outletr, which conducts the products of explosion to the periphery of the primary motor-blades 6, may be supplied with a pipe q to admit cooling fluid to mingle with the products of explosion before their impact on the blades 6 and may be sprayed upon by cooling fluid or be surrounded bya jacket through which a cooling fluid may be circulated.

My invention is independent of the means which may be provided to supply the heated gases to the rotary motor; but I have shown in the present drawings in diagrammatic form an explosion apparatus similar to that described in my copending application, No. 61,354, filed May 22, 1901, with title Appliances for producing and dealing with mixtures of gases. Such apparatus comprises a mixer G and an explosion-chamber 7, which may be sprayed upon by cooling fluid or be surrounded by a jacket through which a cooling fluid may be circulated, and the mixer and explosion-chamber connected by a pipe in which there is situated a hand regulatingvalve 8, an automatic back-pressure checkvalve 9, and flame-proof screens 10, 11, and 12. The mixer G is provided with inlets let and 15, through which air and hydrocarbon, hydrogen, monocarbon' oxid, or other combustible fluid are supplied under pressure to the mixture. The mixing of the air and hydrocarbon or other combustible fluid may also be eflected by what is ordinarily known with a mixer; but whatever means may be used for mixing the air and combustible fluid the nozzle or outlet 1' is supplied with gas under pressure, resulting from the explosion or combustion of the combustible fluid and air in the explosion-chamber 7. Whenthe pressure resulting from such explosion exceeds the pressure in the mixer (1', the automatic back pressure check valve 9 immediately closes by its own weight and by the back pressure from the explosion-chamber 7, so that the explosive force. of the gas in the explosion-chamber 7 forces itself out through the nozzle or outlet 9" onto the peripheral ends of the primary motor-blades e, and as soon as the pressure in the ex plosion-chamber 7 falls below the pressure in the mixer 6 a fresh quantity of mixed combustible fluid and air immediately passes from the mixer 6 through the automatic back-pressure check-valve 9 and enters the explosion-chamber 7, causing a fresh explosion, so that the cycle is repeated indefinitely so long as the hand regulating-valve 8 is allowed to remain open topperlnit the supply of mixed air and combustible fluid.

It will be understood that the various jets I and pipes to supply the pure water would be as a spray-jet alone or in combination.

provided where necessary with automatic back-pressure check-valves and with hand regulating-valves and connections to suitable sources of supply for the pure Water.

From the foregoing description it will be seen how the purewater may be applied; but

' I do not limit myself to the special arrangements of pipes, nozzles, or outlets shown in the drawings. It will also be understood that the use of pure water is not restricted to a rotary motor of the construction-shown in the accompanying drawings, but may be applied to any such engine to cool the parts and to lubricate the moving portions approaching contact with stationary parts. Such contacts occur in the motor shown-in the accompanying drawings in'the channels or guides wherein the outer edges of the disks revolve and Where the blades 8 arein close proximity to the-surrounding peripheral casing, and in such construction, the'formation of any deposit or scalewould speedily obstructand retard the rotations of the disks and would obstruct and retard the revolution of the blades by the accumulation of such matter. The loosening of the scale would also seriously obstruct'and retard the motion when the parts are revolving at a great velocity. It will therefore'be seen'that the use of pure water is a valuable means of lubricating such mechanism without any of the drawbacks which attend the use of ordinary water,'which is certain to form a deposit.

What I claim, and desire to secure by Let ters Patent, isa 1. In a rotary motor driven by-highly-heated gas, the combination,with-the motor-"wheel, ofa casing having a peripheral water-jacket and a supply, to the points of proximity of the wheel and casing, of pure or distilled water which will not deposit a crust or scale.-

2. In arotary motor driven by highly-heated gas, the combination,with'the motor-wheel, of acasin g having the cheeks or channels harranged toform guides for the edges of the motor-wheel disks to revolve in, and such channels being provided with asupp'ly of cooling fluid, substantially as herein setforth.

3. In a rotary motor driven by highly-heated gas having a revolving motor-wheel provided with return -disks, the combination therewith of channels or guides'in which the edges of said exhaust disks revolve, such channels provided with a cooling fluid,-substantially as herein'set forth.

4:. In a rotary motor, the combination, of the exhaust-jacket a and the casing f and the primary motor-blades c with channels or guides for the disks of'the motor-wheel to revolve in, the disks 1, 3 and5 closely secured to the shaft, the other disk or disks secured to the shaft by arms permitting the. passage of gas between them, the blades secured to their respective disks, and means for projectting the passage of gasbetween them, the blades secured to their respective disks, -the" curved spools Z applied'to the shaftbetween' it and the inner ends of the blades-to guide the exhaus't-gas-from the primary motorblades e around the spools toward -the ex-l haust-jacket or toward the inner ends of the return-blades e if the wheel-is'providedwith return-blades, the gas passing through-these blades to the exhaust-jacket a an'd'mean's for projecting a cooling fluid upon thev'ariou's parts, substantially as herein set forth.

6. In-a rotary motor, the combination of' the exhaust-jacket a, the return or exhaust blades e and the casing f, awater-jacket and the primary motor-blades e with channels 'or guides for the-disks of the motor-wheel to revolve in, the

disks

1, 3 and 5 in a wheel pro vided with return or exhaust'blades, and disk 3 in a Wheel without'return or exhaust blades, closely secured to theshaft; the other diskor:

disks secured to the shaft by arms permitting the'passage of gas between them, the blades secured to their respective disks, and pipesprovided'todeliver cooling-fluidto the various parts, substantially as herein described;

7. In a rotary motor, the combinationiof an exhaust-jacket, a wheel having'return-ou exhaust blades, a motor-wheel surrounded by a casing, an explosion-chamber provided with an outlet or nozzle arranged to deliver the products-of explosion tothe m'otoriblades,

and a-pipe supplied with' suitable cooling fluid arranged to project such-fluid into the said-outlet or'nozzle to cool 'the heated gases before their impact on the motor-blades.

In testimony'whereof I have hereunto set my hand in the presence oftwo subscribingwitnesses.

TALMAGE.

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