US676673A - Injector for forcing hot air. - Google Patents

Injector for forcing hot air. Download PDF

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Publication number
US676673A
US676673A US72878599A US1899728785A US676673A US 676673 A US676673 A US 676673A US 72878599 A US72878599 A US 72878599A US 1899728785 A US1899728785 A US 1899728785A US 676673 A US676673 A US 676673A
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Prior art keywords
injector
hot air
nozzles
nozzle
forcing hot
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US72878599A
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Leo Otto Boeing
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04F—PUMPING OF FLUID BY DIRECT CONTACT OF ANOTHER FLUID OR BY USING INERTIA OF FLUID TO BE PUMPED; SIPHONS
    • F04F5/00—Jet pumps, i.e. devices in which flow is induced by pressure drop caused by velocity of another fluid flow
    • F04F5/14—Jet pumps, i.e. devices in which flow is induced by pressure drop caused by velocity of another fluid flow the inducing fluid being elastic fluid
    • F04F5/16—Jet pumps, i.e. devices in which flow is induced by pressure drop caused by velocity of another fluid flow the inducing fluid being elastic fluid displacing elastic fluids
    • F04F5/20—Jet pumps, i.e. devices in which flow is induced by pressure drop caused by velocity of another fluid flow the inducing fluid being elastic fluid displacing elastic fluids for evacuating
    • F04F5/22—Jet pumps, i.e. devices in which flow is induced by pressure drop caused by velocity of another fluid flow the inducing fluid being elastic fluid displacing elastic fluids for evacuating of multi-stage type

Description

Patented lune l8, l90l.
L. 0. BOEING.
INJECTOR FOR FORCING HUT AIR.
(Application filed Aug. 28, 1899.)
(No Model.)
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ATENT LEO OTTO BOEING, OF VALLENDAR, GERMANY.
INJECTOR FOR FORCING HOT AIR.
SPECIFICATION forming part of Letters Patent N 0. 676,673, dated June 18, 1901.
Application filed August 28,1899. Serial No. 728,785. (No model.)
To all whom, it may concern:
Be it known that I, LEO Orro BOEING, a subject of the King of Prussia, German Em peror, residing at Vallendar, in the Kingdom ofPrussia, and German Empire, have invented certain new and useful Improvements in Injectors for Forcing Hot Air, (for which I have applied for a patent in Germany, dated January 2, 1899, and in Austria, dated July 28, 1899,) of which the following is a specification.
The object of my invention is to provide an improved injector for forcing hot air to pro-. mote combustion and for other purposes.
The essential feature of the invention consists in the form and arrangement of the nozzles, which are prismatic or cylindrical and arranged in such a manner one in the other that the front end or mouth of each separate nozzle corresponds with the circumference of an imaginary cone having its base at the mouth of the injector, whereas the back or inlet end of each nozzle is arranged in the same plane or a slight distance from the outlet end of the next and smaller nozzle.
On the accompanying drawings,illustrating this invention, Figure 1 is a longitudinal section illustrative of my invention, and Fig. 2 is a cross-section from which the arrangement of the separate nozzles in each other will be apparent.
A steam-jet e is arranged in the middle at the inlet end a of the apparatus. The nozzles I, II, and III are of prismatic or cylindrical form, thus having parallel walls throughout their length; and are arranged behind each other in such a manner that the outlet-opening c of each nozzle corresponds with the circumference of the cone (1, formed by the issuing steam. The back orinlet end of each nozzle is situated in the same plane or a short distance in front of the fore or outlet end of the next nozzle of smaller diameter. In such a construction the surface subjected to friction by the air is reduced to a minimum, and the resistance offered by the rarefied air to the sucking action of the steam is reduced to a minimum. The steam-jet spreads out after issuing according to its pressure and forms a cone with a greater or less base in proportion to its unit length.
The nozzles are held by distance-bolts 6, arranged at suitable points, as shown in the drawings.
The operation of the apparatus may be considered as follows: Steam issuing under a cer tain pressure and with a given velocity enters the smallest nozzle I, by which it is conducted for a certain distance, then expands into the second nozzle, by which it is further conducted, and so on, exercising a very powerful suc tion action upon the hot air of 600 to 1,800".
By reason of the fact that the nozzles I II III have their walls parallel through their ene tire length annular passages having parallel Walls are provided between the various nozzles through which the hot air is drawn in and forced through the injector. The hot air therefore passes through the injector in straightlines and is not deflected, and thereby forced against the side walls of the various nozzles; as would be the case if the nozzles were conical. By this construction air at a temperature of from 600 to 1,800 centigrade may be safely forced through the injector Without danger of burning out the Various nozzles thereof even when the latter are constructed of sheet-iron.
By the use of the term cylindrical as usedin the following claim I desire to be understood that I contemplate anozzle which is of cylindrical form or one which is of pris matic form.
\Vhat I claim, and desire to secure by Letters Patent of the United States, is
The herein-described injector for forcing hot air, consisting of a plurality of concen trically-arranged inj ector-nozzles whose walls are parallel throughout their lengths, and a steam-inlet pipe concentrically arranged with relation to the inlet end of the innermost nozzle, the outermost injector-nozzle being extended the entire length of said injector and the several nozzles being disposed one within another in such manner that the outlet end of each nozzle corresponds with the circumference of a cone formed by the issuing steam in expanding through the successive nozzles toward the mouth of the injector, substantially as specified.
In testimony whereof I have hereunto set my hand in the presence of two witnesses.
WOLDEMAR HAUPT, HENRY HASPER.
US72878599A 1899-08-28 1899-08-28 Injector for forcing hot air. Expired - Lifetime US676673A (en)

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US72878599A US676673A (en) 1899-08-28 1899-08-28 Injector for forcing hot air.

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US72878599A US676673A (en) 1899-08-28 1899-08-28 Injector for forcing hot air.

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2759661A (en) * 1952-04-12 1956-08-21 Noller Hans Georg Vapor ejector pumps

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2759661A (en) * 1952-04-12 1956-08-21 Noller Hans Georg Vapor ejector pumps

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