US1536984A

US1536984A - Fluid-compressing apparatus

Info

Publication number: US1536984A
Application number: US614364A
Authority: US
Inventors: Suczek Robert
Original assignee: CH Wheeler Manufacturing Co
Current assignee: CH Wheeler Manufacturing Co
Priority date: 1923-01-23
Filing date: 1923-01-23
Publication date: 1925-05-05
Anticipated expiration: 1942-05-05

Description

' May 5, 1925. 1,536,984 R. SUCZEK FLUID COMPRESSING APPARATUS Filed Jan.y 23, 1925 4 Sheets-Sheet 1 N il 4,9 @MAE/55j;

254 A TTORNEY.

May 5, 1925. 1,536,984

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FLUID COMPRESS ING APPARATUS oooo 0600000 1 21 IMVENTOR.

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l ATTORNEY.

May 5, 1925.

R. SUCZEK FLUID coMPREssING APPARATUS 19725 4 sheets-sheet 5 Filed Jan. 25

l A TTORNE Y.

4 Sheets-Sheet 4 R. SUCZEK FLUID COMPRES S ING APPARATUS Filed Jan. 23, 1923 May 5, 1925.

( A TTORNE Y.

Patented YMay 5, 1925.

UNITED STATES' PATENT OFFICE.

ROBERT SUCZEK, OF PHILADELPHIA, PENNSYLVANIA, ASSIGNOR TO C. H. WHEELER MANUFACTURING COMPANY, OF PHILADELPHIA, PENNSYLVANIA, A CORPORA- TION OF PENNSYLVANIA.

' FLUID-COMPRESSING APPARATUS.

Application led January 23, 1923. Serial No. 614,364.

To all whom it may concern.'

Be it known that I, ROBERT SUoznK, a citizen of the United States, residing in the city and county of Philadelphia, State of Pennsylvania, have invented certain new and useful Improvements in FluidCompressing Apparatus, of which the following is a specification.

My invention relates to ejector apparatus for compressing in a plurality of stages elastic fluid, such as air, gas, vapor, or a mixture of them, utilizable in any suitable system or relation, but more particularly intended for the withdrawal of elastic fluid from a power plant steam condenser or the like, and raising the elastic fluid to suitably high pressure, as for example, atmospheric pressure.

In accordance with my invention, an ejector of a series discharges into a. so-called inter condenser, that is, an interstage condenser, and an ejector staged later in the series discharges into a so-callcd after condenser, in the same shell with the inter condenser, the inter and after condensers being cooled by a plurality of cooling media flowing in independent passes or systems, one of the cooling media being, for example, condensate from the large or main condenser and another of' the cooling media being liquid, as colder water, from any other desired or suitable source, each of the plural-V ity of cooling media serving tocool both the inter and after condensers, preferably in counter-current flow or relation.

Further in accordance with my invention, two or more multi-stage ejector systems with their inter and' after condensers are combined, the .inter and after condensers for the different ejector systems being disposed Within the same-shell or housing and subjected to different cooling media. A

My invention resides in fluid compressing apparatus or combined ejector-condenser structure of the character hereinafter described.

Some o'f the features of construction and combination herein disclosed are described in my prior applications Ser. No. 317,875, filed August 16, 1919; Ser. No. 379,716 and Ser. No. 379,717, filed May 8, 1920.

For an illustration of one of the various forms my invention may take, reference is to be had to the accompanying drawings, in which:

Fig. 1 is a vertical sectional view, some parts in elevation, through apparatus embodying my invention and taken on the line 1 1, Fig. 5.

Fig. 2 is a horizontal cross section, some parts in plan, on reduced scale, taken on the line 2 2 of.l Fig. 1.

Fig. 3 is a horizontal sectional view, some parts in plan, taken onv the line 3-3 of Fig. 1.

Fig. 4 is a horizontal sectional view, some parts in plan, taken on the line 4-4 of Fig. 5 is a top plan view, on reduced scale, of the structure shown in Fig. 1.

Fig. 6 is a top plan view of the structure shown in Fig. 1, with the ejector apparatus removed.

Fig. 7 is a fragmentary Vertical sectional view on the line 7-7 of Fig. 6.

Fig. 8 is a top plan view-of the condenser shell with top tube sheet removed.

Fig. 9 is a bottom plan View of the condenser shell with the bottom tube sheet removed.

Fig. 10 is a top plan view of the bottom end box of the condenser.

Fig. 11 is a cross sectional view on the line 11--11 of Fig. 10.

A Fig. 12 is a vertical elevational view, parts in section, showing the ejector apparatus and its condensing structure in combination with a main condenser.

Fig. 13 is a vertical sectional View through the drain control or Vcondensate draw-off traps.

Fig. 14 is a sectional view of the same structure taken on the line lll-14 of Fig. 13.

Referring first to Fig. 5, there are shown two multi-stage ejector systems, each system comprising, in the example illustrated, two ejectors operating in tandemv or staged relation. The first stage ejector of one pair is indicated at E and the second stage ejector at R. In the second system the first stage ejector is indicated at E1 and the second stage ejector at R1.

As shown more clearly in Fig. 1, at E, each of the first stage ejectors may be of any suitable type, in the example illustrated of thev so-called tubulartype, comprising the tubular diffuser D whose inlet is disl posed in the suction chamber a, into which projects the nozzle structure N comprising one or more nozzles of the divergent expansion type for expanding elastic motive fluid, as steam, delivered thereto through the pipe b controlled by valve c.

Each of the second stage ejectors R, R1 may be of any suitable type, and in the example illustrated is of the radial flow expansion nozzle type of the character disclosed in Letters Patent of the United States No. 1,282,595, to the nozzle structure of which steam is delivered through the pipe (Z, which is branched to the nozzle structures of the two ejectors R, R1, the branches being controlled by the valves e, e1, which control also the delivery of steam from the pipe Z to the pipes b, b1 leading to the nozzle structures of the first stage ejectors.

With these ejectors are combined the condenser structure K comprising the common or single housing or shell A, in which is disposed the heat transfer structure of an inter and after condenserfor each of the ejector systems. The upper and lower ends of the shell A are closed by the tube sheets B and B1, forming, respectively, the lower and upper end closure walls for the upper and lower end boxes F and F1, respectively.

Between the peripheral wall of the upper box F and the three

partition walls

1, 2 and 3 within the box F, forming a tight joint with the upper tube sheet B, is the chamber f, into which the diffuser D of the first stage ejector E discharges through the port or aperture 4 a mixture of motive fluid steam and air or other elastic Huid which has been entrained thereby in the suction chamber a and raised to higher pressure. Extending through the tube sheet B' and terminating at their upper ends in the chamber f is a group of tubes g extending downwardly through the shell A through the lower tube sheet B1 and discharging into the chamber I1, in the lower end box F1, said chamber It being formed between the

partitions

5 and 6 in the box F1 making a. tight joint with the lower tube sheet B1. Communicating with the same' chamber k is a group of tubes z', extending through the tube sheet B1 and the shell A and the upper tube sheet B, and discharging into the chamber 7' in the upper box F formed between the periphery of said box and the aforesaid partition 2 and the partition 7, which makes atight joint with the tube sheet B. The chamber j communi- Cates through the passage la with the cham-` ber m formed between the

aforesaid partitions

1 and 3 and the partitions S and 9, which form a tight joint with the tube sheet B. Communicating at their upper ends with the chamber m is a group of tubes n,

through which the ejector discharge passes downwardly into a chamber 0 in the lower end box F1, said chamber formed between the aforesaid partition 6, a continuation of the partition 5 and tle partition 10. Communicating at their lower ends with the chamber 10is a group of tubes p, through which the ejector discharge passes upwardly into the chamber g in the upper end box F, the chamber g being formed between the partitions 7, 9 and a continuation of the partition 8. The chamber g has a discharge outlet 11, throughwhich the air or uncondensed component of the mixture discharged from the ejector E is delivered through the passage or conduit Gr delivering to the suction chamber of the second stage ejector R,

which discharges a mixture of motive steam and the entrained air or other elastic fluid raised to still higher pressure, for example, to substantially atmospheric pressure or higher, through the port 12 into the chamber r in the upper box F formed between the periphery thereof and the

partitions

13 and 14, extending to the tube sheet B and forming a tight joint therewith. Communicating with the chamber r is a group of tubes s, through which the ejector discharge passes downwardly into the chamber t in the lower end box F1 formed between the aforesaid partition 5 and a continuation of the partition 6, said partitions forming a tight joint with the tube sheet B1. The discharge then passes upwardly through the group of tubes u, which discharge into the chamber v in the upper box F formed between the

partitions

1 and 13 and communicating with the chamber w, with which comn'iunieates the group of tubes m, through which the discharge passes downwardly into the chamber y in the lower end box F1 formed between the partitions 5, (i and 10, forming a tight joint with the tube sheet. B1. The discharge then passes upwardly through the group of tubes e into the discharge chamber I common to the two ejector systems, the chamber I having the portl or outlet 15 through which the air raised to suitable pressure, as atmospheric pressure or pressure above or below atmospheric pressure, is discharged directly into the atmosphere or into any desired or suitable receptacle.

For the second ejector system comprising the ejectors E1 and R1 there are provided chambers and groups of tubes similar to and symmetrically arranged with respect to those described in connection vwith the first, ejector system E, R. The chambers and groups of tubes for the second ejector system bear the same reference characters as those described in connection with the lirst ejector system, with the addition, however, of subscript numerals l, And the partitions in the upper and lower boxes F and F1 bear numerals similar to those described in connection with the first ejector system.

Associated with such of the groups of tubes as may he suitable or desirable are drain tubes or pipes 17 Fig 1, terminating at their uppei` ends flush with the upper surface of the tube sheet B, and provided at their lower ends with liquid seal traps or caps 18, whereby any condensate collecting on the tube sheet B is drained into chambers of the lower box F1, the seals 18 being utilized to. allow flow of condensate into the lower chambers without, howlever, -equalizing the pressure between the upper and lower chambers. Structure of this nature is described in my prior application Ser. No. 317 875, filed August 16, 1919.

The condenser shell A is provided on its interior with partitions or baille walls forming distinct passes or routes for different and independent coolin media, each cooling medium serving to coo the exteriors'ot` the tubes of both the inter and after condensers of both ejector systems.

The cooling medium of higher temperature, as condensate from the main condenser from which the ejectors exhaust air` and uneondensable vapors or gases, enters through the port or opening 19 and is divided into two streams llowing through the passages or conduits 20 adjacent the' upper end of the shell A, and flows downwardly between and around the Vtubes z' and i1 in a pass bounded by the shell A and the

partitions

21, 22, of which 21 at its upper edge forms Aa tight joint with the lower side of the upper tube sheet B and at its lower end forms a tight i joint with the upper surface of the lower tube sheet B1, while the partition 22 at its upper end forms a tight joint with the lower side of the tube sheet B and at its lower end is'spaced from the tube sheet B1 to allow the passage of the cooling medium around the lower edge of the partition 22 and thence upwardly between and around the tubes g and q1. through the pass formed between the

partitions

21, 22 and 23, which latter at its. lower end makes a tight joint with the tube sheet B1 and at its upper end is spaced from the tube sheet B to form a space through which cooling medium flows over into the next pass formed by the

partitions

21, 23 and 24, the cooling medium flowing downwardl-y in this pass between and around the tubes u and u1, the partition 24 making a tight joint with the upper tube sheetl B1 and spaced from the lowertube sheet B1 to form a space around which the cooling medium flows into the next pass formed by the partij tions 21, 24 and the wall of the shell A, thelmedium flowing upwardly in this pass between and around the tubes s and 1 and thence into the discharge conduit or passages 25, similar to the' passages 20, and thence through the outlet port 26.

In taking the course described, it will be noted that cooling medium first Hows downwardly in counter-current relation to the upward discharge from the first stage ejectors through the tubes z', 1, and thence upwardly in counter-current low relation w1th respect to the downwarddischarge within the tubes g, g1 of the lirst stage ejectors; thence downwardly. in counter-current relation to the upward discharge from the second stage ejeetors through the tubes u, u1, and upwardly in counter-current tlow relation to the downward discharge from the second stage ejectors. This cooling medium, therefore, flows throughout its course in counter-current relation with respect to groups of tubes of first the inter condenser and then of the after condenser.

The second cooling medium, generally of lower temperature, as cold water from any suitable source, enters at the port or opening 27 into the uptake or vertically extending conduit or passage 28, whose wall at its lower end forms a tight joint with the tube sheetB1 and which at its upper end falls short of or is spaced from the tube sheet B.' Over the weir or upper edge 29 thus formed, the water :flows downwardly in a pass formed by the aforesaid partitions 21, the wall of the shell A and the partition 30, which at its upperl edge forms a tight joint with the tube sheet B, and its lower end is spaced from the tube sheet B1, as indicated in Fig. 1, to allow passage of the water into the next pass.V In descending the water passes between and around the tubes p, p1 in counter-flow relation thereto, and thence upwardly in the next pass formed between the parti-

A tions

21,21, 30 and 31, and in counter-current relation to the ilow in the tubes n, n1. The partition 31 at its lower end forms a tight joint with the tube sheet B1 and is spaced from the upper tube sheet B to allow thewat'er to flow over into the next pass disposed between the

partitions

21, 21, 31 and 32. The water flows downwardly in this pass in concurrent relationv to the discharge inthe tubes w and m1 of the after condenser around the lower edge of the partition 32 and thence upwardly in the last pass formed between the

partitions

21, 21, 32 and the shell A, in concurrent relation to the discharge through the tubes z and 21, and

lthence flowing over the Weir edge 33 of the conduit or assage 34, whose wall at, the lower end ma es a tight .joint with the tube sheet B1. The water passing downwardly in the passage 34 is discharged through the outlet port or opening 35.

The flow of the second cooling medium may be counter-current to the discharge through the tubes of the after condenser, if desired. This is readily acomplished, for example, by causing the upward discharge through the tubes u, u1 to pass downwardly through the tubes a, 2.1 and thence upwardly through the tubes cv, w1. This reverses the relative directions of discharge through the tubes m, a and w1, a1, so that with the second cooling medium passing as before described, it will flow counter tothe discharges in the tubes of the after condensers: lVith the change described, the vent or air-discharge port 15 would in such case be connected to a chamber in the eud box F into which the tubes a? and {c} discharge upwardly, the partition 8 between chambers w and w1 being in such case omitted and a partition in alignment with the partition 8 disposed in the chamber, at present indicated at I, between the tube groups z and s1, and between the two chambers so formed passages communieating with the chambers o and o1, similar to the passages 7c, k1 between chambers j, m and jl, m1.

Accordingly, the second cooling medium Afirst cools tubes of the inter condenser and then of the after condenser, flowing countercurrent to the discharge in the tubes of the inter condenser and concurrent with the discharge in the tubes of the after condenser. Furthermore, each of the two cooling media cools first heat exchange structure of the inter condensers and then of the after condensers, the cooling media flo-wing countercurrent to the discharge through the tubes of the inter condensers, and one of the coolling media flowing counter-current to the discharge through someI of the tubes of the after condensers and the other cooling medium -iowing concurrent with the discharge through the remainder of the tubes of the after condensers.

The effect of the cooling media is to cool the mixtures of motive steam and entrained air or other elastic fluid passing through the condenser tubes, effecting condensation of the motive steam and such other condensable vapors as may be exhausted with the air from the main condenser or another regi-on or vessel. A

The condensed motive fluld flows as condensate downwardly through the various condenser tubes into the corresponding chambers in the lower end box F1. From the chambers L, h1 and t, l the condensate flows through the apertures 3G, Fig. 11, in the lower portions of the partitions 6 into the pockets formed by the upstanding members 37, Figs. 10 and 11, rising to a level higher than the uppermost limit of the openings 36, whereby the condensate flowing from the aforesaid chambers lz, h1 and t, t1 flows over the upper edges of the members 37 into the chambers o, 01 and y, y1, t-he liquid retained in the traps or pockets formed by the members 37 forming liquid seals permitting transfer of condensate as described, but preventing equalization of pressures between the chambers from and to which the condensate flows. This structure is of special importance further in that in case no cooling medium is delivered through the system'comprising the inlet 27 and outlet 35, or in case its quantity is too small, un-

condensed steam from the tubes of the interstage condensers isl prevented from passing through the passages 36 or equivalents to chambers communicating with the second stage ejectors. If uncondensed motive steam from the rst stage did so reach the second stage ejectors, economy would be reduced, because of increased amount of motive fluid required in the second stage ejectors.

The condensate flowing as aforesaid from the chambers it, 71.1 into the chambers o, o1 is mixedl with the condensate collecting in the chambers o, o1, the total condensate from one interstage condenser collected in chamber 0 then flowing into the drain channel 38, and the entire condensate from the other interstage condenser collecting in the chamber o1 flows into the drain channel 39. With the

channels

38 and 39 vconnect the condensate drain pipes 40 and 41, respectively, controlled by the valves 42 and 43, respectively', and then combining into the single vacuum drain pipe 44, through which the condensate collected under vacuum within the structure is withdrawn to condensatedelivering control structure hereinafter referred to.

The total condensate from one after condenser collects in the chamber y flowing therefrom into the condensate drain chan- -nel 45; the total condensate from the other after condenser collects in the chamber y1,

from which it flows into the condensate drain channel 46, the chambers y and y1 being at or near atmospheric pressure in case the outlet 15 discharges to atmosphere. Communicating with the

channels

45 and 46 are the atmospheric condensate draw-off

pipes

47 and 48, respectively, which join to form the single condensate drain pipe 49, leading to the control structure hereinafter described.

It will be understood that my invention is not limited to the employment. of the number of groups of tubes in the' inter and after condensers as illustrated; any suitable one or more groups of tubes may be omitted, as circumstances may permit or require.

In some instances, .it may be desirable to omit the groups of tubes ai, m1, z and 21, the same being those Toups of tubes of the after-condensers which have hereinbefore been described as cooled by the second cooling medium or cold water.

Furthermore, while I have spoken of cooling media of different temperatures, it will be understood that the matter of temperature is not a limitation of my invention, except where so expressed in the claims, and that cooling media, whatever their temperatures, from the same source or different sources may be employed. Furthermore,

the condensate from the main condenser or the warmer cooling medium may be passed througlrthe system whose inlet is at 27 and the outlet at 35, and the other medium or cold water may bepassed through the system whose inlet is at 19 and outlet at 26.

The cooling surface of each interstage condenser, comprising the groups ot tubes g, 2', n and p, or g1, il, a1 andp, maybe made greater than or equal to, and is preferably made less than, the cooling surface of the associated after condenser comprising the groups of tubes s, u, .r and z, or s1, al, arl and 21.

The cooling surface of each interstage condenser cooled by the Warmer cooling medium, as condensate from the main con- `equal to, and ispreferably made greater than, the cooling surface of the same interstage condenser cooled by the second cooling medium, as the cooler medium, entering, for example, at 27 and discharging at 35. f

`The cooling 'surface of each after condenser cooled by the condensate or warmer cooling medium, entering, for example, at 19 and discharging at 26, may be made less than or equal to, and is preferably greater than, that part of the cooling surface of the same after condenser cooled by the cold water or cooler cooling medium, entering, for example, at 27 and discharging at 35.

It is preferred also that the amount 'of motive fluid, as steam, employed by the nozzle structure of an earlier or first stage ejector of a multi-stage combination be less than the amount of motive fluid, as steam, utilized by the nozzle structure of a later or second stage ejector; and it is preferred further .that the ratio of compression of an earlier or tirst stage ejector be greater than the ratio ot compression of an associated later or second stage ejector, in accordance with Letters Patent No. 1,283,593.

Referring to Figs. 12, 13 and 14, there is illustrated, largely diagrammat-ic'ally as concerns Fig. 12, a combination in which my hereinbefore described structure is utilizable. C represents a large main surface condenser for condensing the steam exhausted by a steam engine, turbine or the tors ory boilers thereof, as may be desired.

In the example illustrated, however, the condensate is delivered by the pump J to the inlet 19 of one of the cooling media systems of the condenser K serving the ejectors, the condensate being discharged at 26 and then deliveredl to the feed water heater, boilers or other destination.

From a point belou7 or behind the baille plate 51 within the main condenser C is the pipe connection 52, through which the air and uncondensable vapors or gases are Withdrawn from the interior of the condenser C by the ejector apparatus for maintaining in the main condenser a suitably high vacuum in accordance with power plant practice. The air pipe 52 connects with a-T 53, with which connect the pipes 54 and 55, Fig. 5, controlled, respectively, by the valves 56 and 57, delivering to the suction chambers a and al of the first stage ejectors E, E1. By this arrangement, either pair of ejectors may be employed alone, or both pairs may be uticonditions.

The second cooling medium, as cold Water, is delivered by pipe 58, Fig. 12, to the pump L, which forces it through the second cool -pipe 44. The float 59 is disposed upon the end of a pivoted lever structure 60 terminating in the hollow sleeve or tube 61 fitting and rotating upon the inner tubular member or sleeve 62, the

tubular members

61 and 62 having, respectively, the

ports

63 and 64 moved to and from register with each other by movement of the float 59. As the vacuum condensate accumulates in the chamber M, the iloat 59 rises, rotating the tubular member 61 in counter-clockwise direction, as viewed in Fig. 13, bringing the

ports

63 and 64 into register with each other, and thereby allowing escape from the chamber M of the vacuum condensate to the pipe 65, which discharges the condensatel to .any suitable destination, for example, into the hot well H into mixture with the condensate from the main condenser C, the higher vacuum within the main condenser C serving to draw the condensate from the chamber M.

A second condensate drain control or automatic condensate-removal trap or mechanism O is provided for controlling the condensate removed at atmospheric, or, in general, higher pressure than that under which the vacuum condensate is delivered through the pipe 44 to the drain control M. The mechanism O may, as indicated, be conven- -lized simultaneously, depending upon load j iently attached to the mechanism M to form therewith a combined condensate drain control unit. The chamber' O is vented to atmosphere at 66. The atmospheric conden. sate drain pipe 49 delivers condensate into the chamber O, in which is disposed a ioat 67 attached to a pivoted lever structure 68 attached to the tubular valve member 69 fitting and rotating upon the inner tubular member 70, the members 69 and 70 being provided, respectively, with -ports 7l and 72 rought to register with each other as the oat 67 rises, thereby allowing escape of the condensate through the pipe 73 to the pipe 65, mingling with the vacuum condensate and delivered therewith to the hot well H or to any desired or suitable destination.

For pressure equalizing purposes, particularly at pressures intermediate the pressure at the suction of the irst stage ejector` and atmospheric pressure, there is provided a pressure-equalizing pipe 74 connecting with the interior of the chamber M above the condensate level therein and extending to suitable chambers in the upper end box F. As illustrated in Figs. 5 and 6, `the pipe 74 connects through branched pipes controlled by valves 75 and 7 6 withl the ports 77 and 78, respectively, communicating with the chambers j, m and jl, m1, respectively, in the end box F. The pipe 74 therefore equalizes the pressure as between these chambers and the chamber M of the vacuum condensate drain control mechanism.

While the pressure-equalizing pipe 74 is illustrated as communicating with points intermediate the ends of the interstage condenser passages, it will be understood that it maycommunicate with any other of the chambers or at other points, as may be suitable oi desirable. For example, pipe 7 4 may communicate with the chambers g, (/1 or r, r1, or otherwise, as may be suitable or desirable. However, it is preferred that the pipe 74 communicate with those chambers which are adjacent, in the ejector discharge path or paths, the chambers in the box li", from which the vacuum condensate is Withdrawn.l

Irrespective of the hereinbefore described counter-current and concurrent flows as rcgards directions of flow of the fluids within and outside of the tubes, the cooling tiuid entering at 19 tiows counter-current to the irst stage ejector discharge entering at the port 4, and counter-current to the second stage ejector discharge Ientering at the port 12 in the sense that the cooling fluid first comes into contact with heat exchange structure remote from the entry of each ejector discharge and later into contact with heat exchange structure adjacent the entry of ejector discharge. As regards the cooling medium entering at 27. it tirst flows countercurrent to discharge of the first stage ejector entering at port 4, and then concurrent with the second stage ejector discharge entering at 12, in the 'sense that the medium hrst comes into contact with heat exchange structure remote from the discharge entry port 4 and later with structure nearer the port 4, and thereafter in contact with heat exchange structure nearer the port l2 and thereafter with heat exchange structure more remote from the port l2.

Vhat I claim is:

l. Combined ejector-condenser structure comprising an ejector, a condenser comprising a series of groups of tubes through which said ejector discharges in succession, a condenser shell common to and enclosing said groups of tubes, means for passing a cooling medium through said shell countercurrent to a part of said groups of tubes, and means for passing a second cooling medium through said shell independently of said first named medium counter-current to an other part of said groups of tubes.

2. Combined ejector-condenser structure comprising an ejector, a condenser comprising a series of groups of tubes through which said ejector discharges in successfon, means for directing said discharge in opposite directions in the tube ygroups which are immediately adjacent each other in the series of groups, a condenser shell common to and enclosing said `groups ot tubes, means for passing a cooling medium through said shell counter-current. to a part of said groups of tubes, and means for passing a second cooling medium through said shell independently of said lirst named medium counter-current to another part of said groups of tubes.

Combined ejectoncondenser structure comprising an ejector, a condenser comprising a seres of groups of tubes through which said ejector discharges in succession, a condenser shell common lo and enclosing said groups of tubes, means tor passing a cooling medium through said shell counter-currentto a part ot said groups of tubes first traversed by the'ejeclor discharge, and means 'For passing a second cooling medium through said shell independently ot said first named Inc-- dum in contact with another part of said groups ot tubes.

4. Combined ejector-condenser structure comprising an ejector, a condenser comprisinga. series of groups ot tubes through which said ejector discharges in succession, means for directing said discharge in opposite d"- rections in the tube groups which are immediately adjacent each other in the series of groups, a. condenser shell common to and enclosing` said groups of tubes, means for passing a cooling medium through said shell counter-current to a part of said groups of tubes first traversed by the ejector discharge, and means for passing a second cooling medium through said shell independently of llt] lli

said first named medium in contact with another part of said groups of tubes.

5. Combined ejector-condenser structure comprising an ejector, a condenser comprising a series of groups of tubes through which said ejector discharges in succession, a condenser shell common .to and enclosing said groups of tubes, means for passing a cooling medium through said shell counter-l for directing said discharge inl opposite directions in the tube groups which are immediately adjacent each other in the series of groups, a condenser shell common to and enclosing said groups of tubes, means for passing a cooling medium through said shell counter-current to a part of said groups of tubes, and means for passing a second cooling medium of lower temperature through said shell independently of said rst named medium counter-current to another art of said groups ot tubes disposed in sai series more remote from said ejector.

7. Combined ejector-.condenser structure comprising an ejector, a condenser comprising a series of-groups of tubes through which said ejector discharges in succession, a condenser shell commonto and enclosing said groups otl tubes, means for passing a cooling medium through said shell countercurrent to a part of said groups of tubes, means for passing aA second coolmg medium through said shell independently of said tirst named medium counter-current to an.

first named medium in contact with another' part of said groups of tubes,and a second ejector operating upon the discha-rgejfrom said tubes.

9. Combined ejector-condenser structure comprising'an ejector, a condenser comprising a series of groups of tubes through which said ejector discharges in succession,

a condenser shell common to and enclosing said groups of tubes, means for passing a cooling medium through said shell countercurrent to a part of said groups of tubes,

means for passing a second cooling medium of lower tempo 'ature through said shell independently of said first named medium counter-current to another part of said groups of tubes disposed in said series more remote from said ejector, and a second ejector operating upon the discharge from said tubes.

10. Combined ejector-condenser structure comprising an ejector, a condenser comprising a series of groups of tubes through which said ejector discharges in succession, a second ejector operating upon the discharge from said tubes, tubes through which said second ejector discharges, a condenser shell common to and enclosing all said tubes, and

means for passing a cooling medium through said shell counter-current to all said tubes.

11. Combined ejector-condenser structure comprising an eject-or, a condenser comprising a. series of groups of tubes through which said ejector discharges in succession, means for directing said-discharge in opposite directibns in the tube groups which are immediately' adjacent each other in the series of groups, a second ejector operating upon the discharge from said tubes, tubes through which said second ejector discharges, a condenser shell common to and enclosing all said tubes, and means for passing a cooling medium through vsaid shell counter-current to all said tubes.

12. Combined ejector-condenser structure comprising an ejector, a condenser comprising a series ot' groups of tubes through which said ejector discharges in succession, a second ejector operating upon the dischal'ge from said tubes, a second series 'of groups of tubes through which said second ejector discharges in succession, a condense-r shell common to and enclosing said group-i` of tubes, and means for passing a cooling medium through said shel counter-cturent to all said groups of tubes.

13. Combined ejector-condenser structure comprising an ejector, a condenser comprislng a series"ot' groups ot' tubes thro-ugh which said ejector discharges in succession, means for directing said discharge in opposite directions in the tube groups which are immediately adjacent each other in the series of groups, a -second ejector operating upon the 'discharge from said tubes, a second series of groups of tubes through which said second ejector discharges in succession, a condenser shell common to and enclosing said groups of tubes, and means for passing a cooling medium through said shell counter-current to all said groups of tubes.

14. Combined ejector-condenser structure ico j.

comprising an ejector, a condenser comprising a series of groups of tubes through which said ejector discharges in succession, a secondl ejector operating upon the dischargejfrom said tubes, tubes through which said second ejector discharges, a condenser shell common to and enclosing all said tubes, means for passing a cooling medium through said shell in contact with a part of the groups of tubes through which said rst nameda-cjector discharges and in contact with said tubes through which said second ejector discharges, and means for passing through said shell independently of said cooling medium a second cooling medium in contact with another part of said groups of tubes through which said first named ejector discharges.

15. Combined ejector-condenser structure comprising an ejector, a condenser comprising a series ot' groups of tubes through which said ejector discharges in succession, means for directing said discharge in opposite directions in the tubegroups which are immediately adjacent each other in the series ot groups, a s-econd ejector operating upon the discharge from said tubes, tubes through which said second ejector discharges, a condenser shell common to and enclosing all said tubes, means for passing a cooling medium through said shell in contact with a part ot' the. groups of tubes through which said tirst named ejector discharges and in contact with said tubes through which'sai-d second ejector discharges, and means for passing through said shell independently of said cooling medium a second cooling me-dium in contact with another part of said groups of tubes through which said first named ejector discharges.

16. Combined ejector-condenser structure comprising an ejector, a condenser comprising a series of groups of tubes through which Sai-d ejector discharges in succession, a second ejector operating upon the discharge from said tubes, tubes through which said second ejector discharges, a. condenser shell common to and enclosing all said tubes, means for passing a cooling medium through said shell in contact with a part of the groups ot tubes .through which saidv first named ejector discharges and in contact with said tub-es through which said second ejector discharges, and means for passing through said shell independently of said cooling medium a second cooling medium in Contact with another part of said'groups of tubes through which said irst named ejector discharges and in contact with said tubes through which said second ejector discharges.

17. Colnbined ejector-condenser structure comprising an ejector, a condenser comprising a series of groups of tubes through which said ejector discharges in succession,

a second ejector operating upon the discharge from said tubes, tubes through which said second ejector discharges, a condenser shell common toand enclosing all said tubes, means for passing a cooling medium throuoh said shell in contact with av part of t e groups of tubes through which said lirst named ejector discharges and in contact with said tubes through which said second ejector discharges, and means for passing through said shell independently ot' said cooling medium a second cooling medium of lower temperature in contact with another part of said groups of tubes disposed later in said series.

18. Combined ejector-condenser structure comprising an ejector, a condenser comprising a series ot' groups of tubes through which said ejector discharges in succession, a second ejector operating upon the discharge from said tubes, tubes through which said second ejector discharges, a condenser shell common to and enclosing all said tubes, means for passing a cooling medium through said shell in contact with a part ot the groups of tubes through which said lirst named ejector discharges and in contact with said tubes through which said second ejector discharges, and means for passing through said shell independently of said cooling medium a second cooling medium of lower temperature in contact with another part of said groups of tubes disposed later in said series and in contact with said tubes through which said second ejector discharges.

19. Combined ejector-condenser structure comprising a plurality of ejectors, a condenser comprising a plurality of tubes for each ejector, said ejectors discharging through their respective tubes independently of each other, a condenser shell common to and enclosing all said tubes, and means Jfor passing a cooling medium through said shell for cooling the tubes associated with the dilferent ejectors.

20. Combined ejector-condenser structure comprising a plurality of ejectors, a condenser comprising a plurality ot tubes tor each ejector, said ejectors discharging through their respective tubes independently of each other, a condenser shell common to and enclosing all said tubes,'and means for passing through said shell a plurality ot cooling media independently ot cach other for cooling said tubes associated with the different ejectors.

21. Combined ejector-condenser structure comprising a plurality of ejectors, a condenser comprising a plurality of tubes for each ejector, said ejectors discharging through their respective tubes independently of each other, al condenser shell common to and enclosing all said tubes, means for passing through said shell a cooling medium for cooling the tubes `'associated with the diiierent cjectors, and means for passing la'second cooling medium through said shell independently of said first named medium for cooling tubes associated with the dili'erent ejectors.

22. Combined ejector-condenser structure comprising a plurality of ejectors, a condenser comprising a plurality of tubes for each ejector, said ejectors discharging through their respective tubes independently of each other, a condenser shell common to and enclosing all said tubes, and means for passing through said shell a cooling medium in divided streams for cooling tubes associated with the different ejectors.

23. Combined ejector-condenser structure comprising .a plurality of ejectors, a condenser comprising a pluralityof tubes for each ejector, said ejectors discharging through their respective tubes independently of each other, a condenser shell common to and enclosing all said tubes, means for pass` ing through said shell a cooling medium in divided streams for cooling tubes associated with the different ejectors, and means for passing throughsaid shell independently of said medium-a second cooling medium for cooling tubes associated With the different ejectors.

24. Combined ejector-condenser structure comprising a plurality of ejector apparatus each comprising staged ejectors, a condenser comprisin tubes into which each of said ejectors discharges, a condenser shell common to and enclosing the tubes ofall said ejector apparatus, and means for passing through said shell cooling mediumfor cooling the tubes of all said ejector apparatus.

25. Combined ejector-condenser structure comprising a plurality of ejector apparatus each comprising staged ejeetors, a condenser comprising tubes into which each of said ejectors discharges, a condenser shell com- `mon to and enclosing the tubes of all said ejector apparatus, and means for passing through said shell cooling medium in divided streams cooling, respectively, the

tubes lof the different ejector apparatus.

26. Combined ejector-condenser structure comprising a plurality of ejector apparatus each comprising staged ejectors, a condenser comprising tubesinto which each of said` ejectors discharges, a condenser shell common to and enclosing thetubes of all said ejector apparatus, and means for passing a second cooling medium through said shell independently of said first named cooling medium for cooling the tubes of the different ejector apparatus,A

27. Combined ejector-condenser. struct-ure comprising a plurality of ejector apparatus each comprising staged ejectors, f a condenser comprising tubes into which each of said ejectors discharges, a condenser shell common to and enclosing the tubes of all said ejector apparatus, means for passing through said shell cooling medium in divided streams l cooling, respectively, the tubes of the different ejector apparatus, and means for vpassing through said shell1 independently of said streams a second cooling medium lcooling tubes of the different ejector apparatus.

28. Combined ejector-condenser structure comprising an ejector, a condenser comprising a series of groups of tubes through Which'said ejector discharges in succession, means for cooling said tubes, chambers receiving condensate from different groups of tubes, means for drawing off condensate from one of said chambers, and means for delivering condensate from another of said chambers to said one of ksaid chambers.

29. Combined. ejector-condenser structure comprising an ejector, a condenser comprising a series of. groups of tubes through which said ejector discharges in succession, means for cooling said tubes, chambers receiving condensate fromdiiferent groups of tubes, means for drawing on' condensate from oneof said chambers, and a liquidsealed trap through which condensate is'delivered from another of said`chambers to said one-of said chambers. j

30. Combined ejector-condenser structure comprising an ejector, a condenser comprising aseries of groups of tubes through which said ejector discharges in succession,

`means for cooling'said tubes, chambers receiving -condensate from dii'erent groups of tubes, one of said chambers having a channel in which the condensate collects, and means for delivering condensate from another of said chambers to said one of said chambers.

31'. Combined ejector-condenser structure comprising an ejector, a condenser comprising a series 'of groups of tubes 'through which said ejector discharges in succession, means for cooling said tubes, chambers receiving condensate from diii'erent groups of tubes, one of said chambers having a channel in which the condensate collects, and a liquid-sealed trap through which condensate is delivered from another of said chambers to said one of said chambers.

32. Combined ejector-condenser structure comprising ejector apparatus, condenser structure into which said ejector apparatus discharges, means for drawing off from said condenser structure Vcondensates under different pressures, control mechanism comprising chambers to which said condensates are respectively delivered, and automatic means in each of said chambers for controlling Withdrawal of condensate.

33. Combined ejector-condenser structurek comprising ejector apparatus, condenser structure into which said ejector apparatus discharges, means for drawing off from said condenser structure condensates under different pressures, control mechanism comprising chambers ,to which said condensates are respectively delivered, and automatic means in each of said chambers for controlling withdrawal of condensate in. response to changes in quantity of coifdensate therein.

34. Combined ejector-condenser structure comprising ejector apparatus, condenser structure into which said ejector apparatus discharges, means for drawing off from said condenser structure condensates under different pressures, control mechanism comprising chambers to which said condensates are respectively delivered, automatic means in each of said chambers for controlling withdrawal of condensate, and means for conducting the condensates away from said chambers in mixture with each other.

35. Combined ejector-condenser structure comprising ejector apparatus, condenser structure into Vwhich said ejector apparatus discharges, means for drawing off from said condenser structure condensates Linder different pressures, control mechanism comprising chambers to which said condensates are respectively delivered, automatic means in each of said chambers `for controlling withdrawal of condensate, and means for connecting said chambers with a region of lower pressure whereby the condensates are withdrawn from said chambers.

36. Combined ejector-condenser structure comprising ejector apparatus, condenser structure into which said ejector apparatus discharges, means for drawing off from said condenser structure condensate under a pressureless than atmospheric pressure, means for drawing olf from said condenser structure a second condensate under higher pressure, control mechanism comprising chambers to which said condensates are respectively delivered, and automatic means in each of said chambers for controlling withdrawal of condensate.

37. Combined ejector-condenser structur comprising ejector apparatus, condenser structure into which said ejector apparatus discharges, means for drawing olf from said condenser structure condensate under a pressure less than atmospheric pressure, means for drawing off from said condenser structure a second condensate under higher pressure, control mechanism comprising chambers to which said condensates are respectively delivered, automatic means in each of said chambers for controlling withdrawal of condensate, and means'for connecting -said chambers to a region under pressure lower than said first named pressure whereby the condensates are withdrawn from said chambers.

38. Combined ejector-condenser structure comprising ejector apparatus, condenser structure into which said ejector apparatus discharges, means for drawing off from said condenser structure condensates under different pressures, control mechanism comprising chambers to which said condensates are respectively delivered, automatic means in each of said chambers for controlling withdrawal of condensate and a pressureequalizing connection between one of said chambers and a region in said condenser at a pressure lower than the pressure of discharge from said condenser.

39. Combined ejector-condenser structure comprising multi-stage ejectors, inter and after condensers therefor, means for cooling said inter condenser by different cooling media, the cooling surface of the inter condenser being less than the cooling surface of the after condenser, and the portion of cooling surface of the inter condenser cooled by one of said media being greater than the portion of cooling surface of said inter condenser cooled by another of said cooling media.

40. Combined ejector-condenser structure comprising multi-stage ejectors, inter and after condensers therefor, means for cooling said inter condenser by cooling media of different temperatures, the cooling surface of the inter-condenser being less than the cooling surface of the after condenser, and the portion of cooling surface of the inter condenser cooled by the cooling medium of higher temperature being greater than the portion of the cooling surface of the inter `condenser cooled by a cooling medium of lower temperature 41. Combined"ejector-condenser structure comprising multi-stage ejectors, inter and after condensers therefor, means for cooling an after condenser by different cooling media, the portion of the cooling surface of said afterv condenser cooled by one of said media vbeing` greater than the portion of cooling surface of said after condense cooled by another of said media.

42. Combined ejector-condenser structure comprising multi-stage ejectors, inter and after condensers therefor, means for cooling an after condenser by cooling media of different tcnlperatures, the portion of the cooling surface of said after condenser' cooled by the condensate of higher temperature being greater than the portion of the cooling surface of said after condenser cooled by a cooling medium of lower temperature.

43. Combined ejector-condenser structure comprising multi-stage ejectors, inter and after condensers therefor, the cooling surface of an inter condenser being less than the cooling surface of an after condenser, means for cooling said after condenser by di'erent cooling media, the portion of the cooling surface of said 'after condenser cooled by one of said media being greater than the portion of the cooling surface of said after condenser cooled by another of said lnedia.

44. Combined ejector-condenser structure comprising multi-stage ejectors, inter and after condenscrs therefor, the cooling surface of an inter condenser being less than the cooling surface of an after condenser, means for cooling said after condenser by cooling media. of different temperatures, the portion of the cooling surface of said after condenser cooled by the cooling medium of higher temperature being greater than the part of the. cooling surface of said after condenser cooled by a cooling medium of lower temperature. I

45. Combined ejector-condenser structure comprising multi-stage ejectors, inter and after condeners therefor, the cooling surface of lan inter condenser being less than the cooling surfacen of an after condenser', means for cooling said inter condenser with different cooling media, means for cooling said after condenser with said different cooling media, the portion of the cooling surface of said after condenser cooled by one of said cooling media being greater than the part of theV cooling surface of said after condenser cooled by another of said cooling media. j

46. Combined ejector-condenser structure comprising multi-state ejectors, inter and after condensers therefor, the coolingsurface of an intercondenser being less than the cooling surface of an after condenser, means for cooling said inter condenser with cooling media of different temperatures, means for cooling said after condenser by said cooling media of different temperatures, the portion of the. cooling surface of said after condenser cooled by the cooling me dium of higher temperature. being greater than the portion of the cooling surface of said after condenser cooled by a cooling medium of lower temperature.

47. Combined ejector-condenser structure. comprising multi-stage ejeciors, inter and after condcnsers therefor, lneans for cooling said inter and after condensers by different cooling mediathe portion of the cooling surface of said inter condenser cooled by one of said cooling media being greater 4thanthe portion of the cooling surface of said inier condenser cooled by another of said cooling media, and the portion of the cooling surface of said after condenser cooled by one of said cooling media being greater than the portion of the cooling surface of said after condenser cooled by an other of said cooling media.

48. Combined ejector-condenser structure comprising multistage ejectors, inter and after eondensers therefor, means for cooling said inter and after condensers by cooling media of different temperatures, the portions of the cooling surfaces of said inter and after condensers cooled by a cooling medium of higher temperature being greater than the portions of the cooling surfaces of said inter and after condenser cooled by a cooling medium of lower temperature.

49. Combined ejector-condenser structure comprising an ejector, tubes into which said ejector discharges, a condenser shell enclosing said tubes. a conduit delivering adjacent one end of said shell into the space between said tubes, and means for introducing cooling medium into said conduit at its end adjacent the other end of said shell.

50. Combined ejector-condenser structure comprising an ejector, tubes into which said ejector discharges, a condenser shell enclosing said tubes, a conduit receiving at its end adjacent one end of said shell cooling medium from the spacebetween said tubes, and a discharge outlet for the cooling medium connnunicating with said conduit at its end adjacent the other end of said shell.

51. Combined ejector-condenser structure comprising ejectors, groups of tubes into which said ejectors independently discharge, a condenser shell enclosing said groups of tubes, a conduit on said shell having discharge openings adjacent the different groups of tubes, and means for conducting cooling` medium to said conduit.

52. Combined ejcoter-condenser structure comjn'ising ejecl'ors. groups of tubes into which said ejectors imlependentlj1 discharge, a condenser shell enclosing said groups of tubes, a conduit on said shell having ports adjacent to different groups of tubes for receiving cooling medium from bet\\'een said tubes, and a discharge port coiui'nunicating with said conduit.

In testimony whereof l have hereunto affixed my signature this 25th day of October, 1922.

ROBERT SUCZEK.