US1653954A

US1653954A - Exhaust-steam injector

Info

Publication number: US1653954A
Application number: US106727A
Authority: US
Inventors: Friedmann Louis; Deutsch Hans
Original assignee: Individual
Current assignee: Individual
Priority date: 1925-05-14
Filing date: 1926-05-04
Publication date: 1927-12-27
Anticipated expiration: 1944-12-27

Description

Dec. 27, 1927.

L. FRIEDMANN ET AL EXHAUST s'rmm INJECTOR Filed May 4.. 1926 Fig 2 1/. Danube 1 mvcmar's W lk r m Patented Dec. 27, 1927.

UNITED STATES 1,553,954 PATENT oFFlcE.

LOUIS FRIEDMANN AND HANS DETJ'TSCH, F VIENNA, AUSTRIA.

nxnausr-srnam manc'ron.

Application filed May 4, 1926, Serial No. 106,727, and in Austria May 14, 1925.

This invention relates to exhaust steam injectors provided with a plurality of steam cones and the necessary number of other cones such as water, collecting and delivery cones in which exhaust steam is admitted to one of the steam cones simultaneously with the admission of live steam to another steam cone. If no exhaust steam is available live steam of reduced pressure is fed to the exlq haust'steam cone as a substitute.

In injectors of this kind the quantity of water fed to the water cone depends solely upon the pressure of the exhaust steam used and the temperature of the water fed. Now

l5 infsome cases it is desirable to increase the quantity of water. fed toth'e water cone, which is not possible under the above stated conditions without loweringthe temperature of the feed water as the exhaust steam pressure can not be varied atwill,

' j This invention therefore consists in improvements'in exhaust steam injectors of the kind mentioned allowing to increase the quantities of water flowing to the water 2 cone without variation of the exhaust steam pressure or the temperature of the feed water. i i

According to this invention an arrangement is provided by means of which the in flow of water to the water cone and the inflow of exhaust steam from the exhaust steam chamber to the exhaust cone are controlled simultaneously. This inflow control consists in providing a longitudinally dis-- placeable exhauststeam cone in the circumferential'surface of which channels leading to the interior of the cone are provided, which are more or less freed according to the varying position of the displaceable cone. Thereby the inflow of exhaust steam to the cone may be regulated in accordance with the inflow of water desired.

The invention is illustrated in the accompanying drawing which shows'two diil'erent modifications of the invention.

Fig. 1 of the drawing shows a longitudinal section through an exhaust steam injector of the usual type in which however a longitudinally displaceable exhaust steam cone provided with channels according to the invention has been substituted for the usual exhaust steam cone.

Fig. 2 shows on a larger scale another modification only the parts surrounding the exhaust steam cone being illustrated as the other parts may be identical with those representedin Fig. 1.

In both figures the reference 1 denotes the live steam cone of the injector, 2 the exhaust a steam cone, 3 the water cone; 4 the collecting 00 cone and 5 the delivery cone. An exhaust steam chamber 6 is provided at the left side to which exhaust steam'from the engine is admitted and which communicates with the exhaust steam cone 2. 7 is the water chamher, 8 the overflow chamber and 9 the delivcry or pressure chamber of the injector, the relative arrangement and operation of all these parts being in substance similar or identical with those of'the known type of exhaust steam injector. According to this invention however the exhaust steam cone is not as usual integral with the body of the injector but is made as a separate piece showing an outer cylindrical surface in serted into a suitable hollow cylindrical surface of the injectorbody.

The exhaust steam cone is capable of longitudinal displacement within the injector casing and may be moved by means of an excentric 10 or any other appropriate means. The circumferential cylindrical surface is provided with openings or channels 12 which lead to the interior of the cone and are either covered by the injector casingenclosing the exhauststeam or are establishing a communication between the exhaust steam chamber 6 and the interior of thecone 2. The live steam cone 1 is provided with a disc like collar 11 arranged at that part of the live steam cone which projects into the exhaust steam cone and its size is so calculated that the annular space between the collar 11 and the wall of the exhaust steam cone is smaller than the smallest cross section of the annular space at any other place of the projecting live steam cone and the exhaust steam cone. Therefore whatever the position of the exhaust steam cone relatively to the live steam cone may be, the collar 11 will always exercise a choking or throttling effect upon the exhaust steam flow entering at the admission end of the exhaust steam cone. If therefore the quantity of water flowing to the water cone shall be increased while on the other hand the pressure of the exhaust steam admitted to the exhaust steam chamber is a constant one and the temperature of the feed water is not lowered, this increase may be obtained by lit) displacing the exhaust steam cone to the left in the drawing i. e. towards the a side from whence the steam enters asby this displacement not only the free annular cross section between the exhaust steam cone and the water cone'isincreased butthe quantity of exhaust steam admitted to the exhaust steam cone will also increase as the exhaust steam may i enter not only at the annular cross section between the collar 11 and the Wall of the cone but alsohy means of the apertures or channels 12 in the circumfer ential part of said cone. A

Fig. 2 shows on an enlarged scale another modification of the above described construction in which the fact has been taken into account that the exhaust steam pressure has increased and that therefore a decrease of the admitted quantity of exhaust steam has to heefiected sinuiltaneously with an inere'ase otthe water inflow. In this modification a sepai'ate steam path in'the form of a channel 13 in the injector casing is provided which establishes *connnunication between the exhaust steamchamber 6 and the interior of; the cone by means not the apertures or channels 12, when the exhauststeamcone has beenmoved towards the left or entrance side of the cones toa certain extent. If the displacement of the exhaust steam cone 2 is however further continued the communication between the channel 13 or the small annular chamber 14 into which the channel 13 leads and the aperturesor channels 12 is interruptcd because the said apertures or channels 12am again coveredby the injector casing or'somepartvthereof by which the exhaust steam cone-is enclosed and within whichit is displaced.

We do not limit ourselves to the twoamodifications shown as it is obvious that other modifications embodying the same 'rinciple may be devised Without departing rontrthe essence of the invention.

What weclaim is a 1. In an exhaust steam injector of the kind specified, a live steam cone, awater cone and an exhaust steam cone provided with channels leading from the circumference tothe 'haust steamcone, thus more or less freeing the channels leading to the interior of the said exhaust steam cone and altering the quantity of exhaust steam admitted thereto in accordancewith the quantity of water ad mitted to the'water cone. a

2. In an exhaust steam injector of the kind specified, a live steam cone, a Water cone and a longitudinally displaceahle exhauststeam cone, channels leading totheinterior of said cone, an injector casing enclosingsaid cone and permitting displacement of the same therein, a channel leading from the exhaust steam chamber through said casing to vallow comn'mnication with the channels in said exhaust steam cone andmeans to dis place said exhaust steam conesoas toestablish and out oft communication with the interior of said cone through saidchannel in the casing to a varying extent in accordance with the amount of displacement impel to the exhaust steam cone. a

3. In an exhaust steam injector eithe kind specified, an injector casing, a live steam; cone, anexhaust steam cone anda water cone, sa1d exhaust steam iconebemg displaceable within said casing, means to vary the admissionof exhaust steam to said cone, comprising an exhaust steam pipe, an

exhaust steam chamber communicating theses with and channels wlthinsaidexhaust steam cone, adapted to establish axcommunieation between said exhaust steam chamber and interior of the cone and more or less freediln accordance with thevarying location of said exhaust steam cone, to vary the admission of exhaust steam'in accordance with the quantity of water admitted to the water come.

In testimony whereof we allix our sigma tures.

LOUIS FRIEDMAN. HANS DEUTSGH.