US1367093A

US1367093A - Boiler for vehicle steam-engines

Info

Publication number: US1367093A
Application number: US138835A
Authority: US
Inventors: Lyman S Powell
Original assignee: Individual
Current assignee: Individual
Priority date: 1916-12-26
Filing date: 1916-12-26
Publication date: 1921-02-01
Anticipated expiration: 1938-02-01

Description

L. S. POWELL. BOILER Fun VEHICLE 5mm ENGINES.

INVENTOR.

fi th ATTORNEX L. S. POWELL.

BOILER FOB VEHICLE STEAM ENGINES.

- APPLICATION FILED nc.2s, 1916. 1,367,093. Patented Feb. 1, 1921.

CI. 61 .Qa

fit

UNITED STATES.

PATENT OFFICE.

LYMAN S. POW'ELIi, OF CHICAGO, ILLINOIS.

BOILER FOR VEHICLE STEAM-ENGINES.

Specification of Letters Patent.

Patented Feb. 1, 1921.

Application filed. December 26, 1916. Serial No. 138283;.

and useful improvements in Boilers for Vehicle Steam-Engines, of which thefollowing is a specification. V j

My invention relates to improvements in boilers designed for use particularly 1n con nection with power driven vehicles employ ing steam engines as the means of propulsion thereof. l

The object of my invention is the production of a boiler of the character mentioned which will be of durable and economical construction, and which will be cient in use.

Other objectswill appear hereinafter.

T he invention consists in the combinations The preferred form of construction, as

illustrated in the drawings, comprises a water chamber of elongated substantially oblong form in horizontal section, the same being formed of a lateral wall 1 and top and bottom walls 2 and 3 respectively, said walls 2 and 3 having vertically extending peripheral flanges which fit within the wall 1, being securely riveted thereto. I Thewater chamber is traversed by a plurality of veig tically extending flues l, the ends of which are rigidly secured in openings provided for the reception thereof in the plates 2 and The lower ends of said rlues communicate with forward and rearward compartments 5 and 6 respectively, which are separated from each other by a partition 7 so to form independent compartments, as will be readily understood. Arranged in thebottom of compartment 5 is a fuel. burner .8 preferably of a type in which kerosene may be burned, said burner being of a design to j snugly fit the bottom of compartment 5, and

the top thereof being longitudinally corrugatedor ribbed and perforated, as clearly seen in Fig. 3. The fuel is applied to burner 8 from a supply pipe 9 communicat ng with one side thereof, an exteriorlv positioned valve 10 being interposed in said pipe to control the flow of fuel therethrough. Cooperating with the burner is a pilot light burner 11 which is arranged, as seen, in hue of the central corrugations or recesses at the upper side of the former, said burner 11 communicating with the fuel supply pipe 9 at a point ahead of the valve 10, so as to be unaffected by the latter. It is the intention that the pilot light shall be constantly burning, being adapted to serve as a means of kindling or lighting the main burner 8 when the valve 10 is opened.

Leading from the rearward end of compertinent 6 is an exhaust passage 13 which is controlled by a pivoted damper or other suitable valve member 14.

The upper ends of fines 1 all communicate with a compartment 15 which is formed above the plate 2,.an additional cover member 16 being mounted upon the upper edge of lateral wall 1, to form the upper side of said compartment. A screw plug 17 is arranged in the cover member 16 through which access may be gained to compartment 15. Communicating with the rearward end of the water chamber, adjacent the lower endthereof, is a water inlet or supply pipe 18, which, when the boiler is in use, communicates with any suitable source of supply.

Leading from the rearward end of the water chamber, adjacent the top thereof or considerablyabove the normal water level of said chamber, as clearly indicated in Fig. 2, is a steam outlet pipe 19. Leading from the bottom of the water chamber, adjacent the rearward end thereof, is a drain cock 20. At the front end of the boiler is a flush ing or cleaning pipe 20 which communicates with the water chamber adjacent the lower end thereof. In flushing or cleaning the boiler, the cleaning liquid will be intro duced through the pipe 20, and after flowing through the water chamber will be discharged or drained through the drain cock 20.

Arranged in the water chamber, substantially medially thereof, is a transversely extending vertically disposed perforated plate 21 rigidly secured in position by angular holders 22. The plate 21 is so arranged that the upper edge thereof is approximately flush with the normal level of the water in the water chamber, the lower edge of said plate being spaced considerably above the bottom of said water chamben Said plate is of a width coextensive with that of the water chamber. Arranged directly above the plate 21 is a vertical transversely extending imperforate plate 23 rigidly. fastened'in position by means of angular holders 2%. The plate 23 extends the full width of the water chamber, the upper edge thereof being spaced slightly below the top wall 2 of said chamber so as to form an unobstructed longitudinal passage at the top of said chamber, the lower edge of said plate terminating slightly above the normal level of the water in said chamber.

In operation, the burner 8 having been lighted, the hot gases generated thereby will pass up through the fines l which communicatewith the compartment 5. Said gases will-then: enter the compartment 15, whence the same will travel rearwardly to the fiues a which communicate with the compartment 6, said gases passing downwardly through said fines and into said chamber 6 whence the same will be exhausted through the passage 13. This circulation of the hot gasesgenerated at the burner 8 Wlll, or" course, by conduction ellect heating of the water contained in the water chamber, the

extended circulation which is obtained through, the construction employed being such as to secure a maximumutilization of the heat of said gases before the same are exhausted from the boiler. iloreovei', the construction is' such that the'motion of the vehicle in which the boiler is installed, will have the effect of facilitating the circulation of the gases, as mentioned, inasmuch as the motion of the vehicle will have a tendency to increase the'rearward How of the gases through the chamber 15 and the drawing of gases from the rearwardly opening passage 13.

The hot gases generated in the compartment 5, of course, are of greatest temperature close to saidchamber, the temperature of said gases gradually decreasing as the same continue their flow through the boiler.

This being so, the water directly over the compartment 5, or surrounding the lower ends of the lines 4, which communicate with said compartment, will be heated to the greatest temperature. This intense heating of the water at this particular place will result in the creation ol a circulation, inasmuch as the water thus heated will ise to the surface, and in thus rising the cooler water-"from the rearward end of the water chamber-will flow forwardly to take the 'place of the water which thus has risen.

The heated water will t'henfiow rearwardly over the partition 21 or through the perforations therein to the rearward end of the water chamber. Thus, it will be seen, that the circulation of the cater will be up wardly from the forward end of the water chamber, thence rearwardly at the surface of the water, thence downwardly at the rearward end of said chamber, and thence forwardly along the bottom of the same. The plate 21 is of service in establishing this circulation, permitting of uninterrupted liow oi" the water thereunder, but retarding the liow of the surl a, e 'ater. That part of the water which directly over the heating element will, or" course, become heated irst, and consequently will travel in a direction away from the heat, which in this case would be upwardly. Cooler water will flow in to take its place, the cooler water flowing from that portion of the chamber to which less heat has been applied, tint is from that portion of the chamber which is directly over the CiillllllJL (3. The water which is at the rearward end of the ciambcr in which the plate 21 is positioned, willof course be cooler at the bottom than at the top, the warmer water having circulated to the top. Consequently when the hot water flows npwardly in the forward end oi the water chamber, by allowing i'ree passage at the base or the chamber, the cooler water which is at the base of the rearward chamber [lows over and occupies the p ace of the water which has just flowed upwardly from the heat. It is therefore evident that there is a current in the water chamber in. which. the water flows forwardly under the plate 21, thence upwardly and rearwardly over the plate 21 or through the perforations therein formed. No obstacle being placed in thc way of the water at the base oi" the water chamber, it is evident that the water in the rearward end of the water chamber will have a tendency to flow in that diretion, thereby passing under the plate 2]. The purpose of interrupting the water in the water chamber in this manner is to retard the flow the heated water and assist in bringing the cooler water over the heating element, by all ording an open passage to which the cooler water has immediate access, as will be readily understood. In operation. water at the front end oi the water chamber will be brought to .olcnt boil, rising above the upper edge of partition 21, so that in operation the water and spray or bubbles will pass over said partition in the rearward travel of the same.

The member serves the function of a division element, the same being adapted to divide the steam from the solid liquid or water, the steam being adapted to pass over said element 23 and the spray or solid liquid under said element, as will be readily understood. The steam thus divided from the ion liquid will pass rearwardly along the top of the water chamber out through the steam outlet pipe 19. This division of the steam and liquid prevents the entrance of liquid into the steam pipes leading to the engine which is absolutely necessary in order to obtain successful and eflicient operation of the engine. The absolute division of the steam and water is one of the main diiiiculties encountered today in connection with the use of steam engines in automobiles, and with the construction set forth, it has been found that this diiliculty is overcome.

The plate 21 also serves the additional function of a means of preventing sudden. shifting of the water in the water chamber as would otherwise result in the sudden starting or stopping of the automobile in which the boiler is employed. This funotion is also served by the fiues 4 which are arranged in staggered relation, the resulting construction being such as to effectually prevent any sudden shifting oi the water, and to insure a constant level of the same in the boiler. The flow of the steam will, of course, also be materially assisted by the forward motion of the vehicle, as will be readily understood.

Moreover, the construction employed is exceedingly durable, and at the same time is of economical manufacture.

While 1 have illustrated and described the preferred form oi? construction for carrying my invention into eilect, this is capable oi variation. and modification without departing from the spirit of the invention. I, therefore, do not wish to be limited to the precise details of construction set forth, but desire to avail myself of such variations and modifications as come within the scope of the appended claims.

Having described my invention What I claim as new and desire to secure by Let ters Patent is: v

1. A steam engine boiler comprising a water chamber; means for heating the water in said chamber; a steam outlet leading from said chamber, above the normal Water level thereof; means for separating the effervesced particles of water from the steam, said means comprising a transversely extending impert'orate partition above the normal level of the water in said chamber, but aliording an uninterrupted longitudinal passage adjacent the top of said chamher and positioned intermediate the said steam exhaust and the end, adjacent said heating means, of said chamber; and means for retarding the flow of the heated water in said chamber, said means comprising a transversely extending and foraminated partition positioned in said chamber and afiording an uninterrupted longitudinal passage adjacent the bottom of said chamber and positioned with its upper edge at the normal water level of said chamber, said partition extending transversely from side to side of said chamber, substantially as described.

2. A steam engine boiler comprising a water chamber; means for heating the water in said chamber; a steam outlet leading from said chamber, above the normal water level thereof; means for separating the eflervesced particles of water from the steam, said means comprising a transversely extending imperforate partition above the normal level of the water in said chamber, but affording an uninterrupted longitudinal passage adjacent the top of said chamber and positioned intermediate the said steam exhaust and the end, adjacent said heating means, of said chamber; and means for retarding the flow of the heated water in said chamber, said means comprising a transversely extending foraminated partition positioned in said chamber, but affording an uninterrupted longitudinal passage adjacent the bottom of said chamber and positioned with its upper edge at the normal water level of said chamber, the opposite ends of said partition being secured to the opposite lateral walls of said chamber,-substantially as described.

3. A steam engine boiler comprising a water chamber; means for heating the water in said chamber; a steam outlet leading from said chamber, above the normal water level thereof; means for separating the etfervesced particles of water from the steam, said means comprising a transversely extending imperforate partition above the normal level of the water in said chamber, but affording an uninterrupted longitudinal passage adjacent the top of said cham ber and positioned intermediate the said steam exhaust and the end adjacent said heating means of said chamber; and means for retarding the flow of theheated water in said chamber, said means comprising a transversely extending foraminated partition positioned in said chamber and affording an uninterrupted longitudinal passage adjacent the bottom of said chamber and positioned with its upper edge at the normal water level of said chamber, substantially as described. 1

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

LYMAN S. POVELL.

Witnesses:

JOSHUA R. H. Po'rrs, HELEN F. Linus.