US1602287A - Heat exchanger - Google Patents

Description

Oct-5 1926.

A. c. SPENCER HEAT EXCHANGER Filed March 6. 1923 FIG Patented Oct. 5, 1926.

UNITED STATES PATENT ALEXANDER-c. SPENCER, oF sARNLA, ONTARIO, CANADA, AssrGNoRT'o STANDARD DEVELOPMENT, COMPANY, A coRPoRATIoN 0E DELAWARE.

:HEAT EXCHANGER. l f

Application filed March c. 1923. serial No. Aezarar.

lThis invention relates to apparatus l.for transfer of hea'tfrom hot fluids to colder fluids, and Awill be fully understood.A from the following description, taken in connection 'with the accompanying drawing, -inwhich-v Fig. 1 represents aside elevation, (partly broken away), of one embodiment ofthe in- I vention; v H t Fig. 2 is an endview, partly in section'on the line II-II of Fig. 1; x

Fig. 3 is a sectional detail, on a larger scale, of theend connections; and

Figli` is a similar -view of a modified' construction', the top and bottom plates be-I ing for example uniform for exchangers of .various capacities, differences incapacity being provided by difference in Isize or num-ber of intermediate plates. It will be understood that` in assemblage, the plates are joined by any suitable means, for instance by riveting, as customary in yboiler practice..

Inlet and outletpip- es 2, 3, one or more of each, provide access to the space within the shell. At each end of the 'shell is a tube; sheet 4 secured with tight joints, and extending through from tube-sheet to tubesheet are tubes 5. The tubes are expanded or rolled into' the tube-sheets to make tight joints therein, (welding -beingfused alsor if desired), and -th-e ends project beyond the tube-sheets andare in turn' secured,'as by being expanded or rolled, into connections 6.v` These connections serve "to jointhe ends of thetubes so as to secure a consecutive path between tubes, In Figs. 1 and 2, vthe connections are'shown of such proportion as to join the tubes in groups of fives. That is, a group of five tubes 'is connected for flow with a group o f' five, and so on back and forth through the seri-es for the same level. From one level or tier of groups to another a similar connection, or preferably an -auxiliary modified forni as 7 is employed. To facilitate access for making up, cleaning, etc., th-e connections have removable covers 8. These preferably, like the connections `finally emerging by outlet pipe 11.

.transfer from the hot to the cooler fluid voc-l proper, are made in singlespieceyuniform standardized castings, stampings, orthe like,

landit is advantageous to vhave such piece extend clear across each tier.,or level las shown in Fig. 2. The 'covers areheld to the connections by bolts ortl'1e,like.`ll

A housing-is arranged to' cover over the connections, at each end, and'the closure plate 9 thereof is held by suitable means, as

bolts`9, so as to be removable when desired. The inlet' and outlet pipes 10, 11 for the tube system, pass through thehou'sing at the side being'suitablyguarded by flanges and join into the adjacent connection 6 in each instance.v 'In case ofleakaofe into the housing, drainage may be effected by drains 12, either pipes or'simple openings asdesired. A drain for the central space within the shell is provided by 4the pipe 13.'

The operation of the exchanger will be i clear. A hot fluid, for example in vapor form, is passed into, the shell at Vinlets 2` and circulates about the tubes 5 and finally emerges at outlet pipes 3. At the same time, a cooler fluid 'is passed into the tubes by in letpipe 10, and flowing through the first 'group of five tubes as illustrated is turned back `by the connection" at the farther end into the next group of five tubes in the same tier or level, the partitions as at 61L in the connections beinglocated to permit flow into the desired group only. .Returning to-the first end the flow is'directed into the last group of thetier (the example illustrated showing four groups to a tier or level). On

returning to the first end the flow is directed connection 7 into the tierby the auxiliar below, and s o t e flow proceeds from group to group and tier to tier through the tubes, Heat those stated; or the hot fluid can be -the'onecirculated through the tubes. Such arrange-l f ordinarily be `less adj ment however. would vantageous.

As already indicated, the construction described contemplates the assembla e of exchangers of any desired capacity y incorporating a smaller or larger numberv of the tier units of `connections and tubes, and the correspondingly necessary uniform top and bottom plates and the intermediate pla-tes.

While in this aspect of the invention, the construction of the shell, etc., on rectangular lines is preferable, in other aspects the invention contemplates the provision of the tubes and connections, etc., and end housing with a shell of any desired shape.

While the grouping of the tubes byiives as mentioned is advantageous as embodying a good balance of surface .exposure and throughout for average uses, I contemplate also larger and smaller groupings in the con nections. In Fig. 4 there is'shown lfor instance a connection 13 joining the tube ends one to one. Again, insteadl of having the connection cover as a whole removable, access to the -tubes may be had by openings which are normally closed by suitable plugs 14, screwthreadedly or otherwise held aS desired.

While I have described my invention by certain specific details, it will be understood that this is for the purpose of illustration and is not limitative, and that changes may be made which are within the spirit and scope of the invention.y I

I claim y v1. lApparatus of thecharacter described` which comprises an outside shell having inylet andoutlet openings for passage of fiuid,

tube-sheets at each end of the shell, tubes extending between said tube-sheetsand projecting. therebeyond, said-tubes being expanded into the tube-sheets, a series of connections joining the projecting ends of the tubes by groups of tive, said projecting ends being expanded into the connections, detachable cover-plates on said connections, a housing for said connections at' each end, a detachable closure plate for each housing, anddrains in each housing.

2. Apparatus of the character described, which comprises an outside shell having inlet'and outlet openings Yforpassage of fluid, tube-sheets at each end of the shell, tubes extendingl between said tube-sheets and projecting therebeyond, said tubes being eX- panded into the tube-sheets, a series of connections joining the projecting ends of the tubes by groups, detachable covers on saidl connections, a housing for said connections at each end, and a detachable closure for each housing. l

3. Apparatus of the character described,

' which comprises an outside shell having inlet and outlet openings for passage of Huid, tube-sheetsfat each end of the shell,

. tubes extending between said tube-sheets and projecting therebeyond, said tubes being expanded into the tube-sheets, a series of connections joining the projecting ends of the tubes-by groups, each group having substantially the same number ot tubes, and a housing for said connections.`

4. Apparatus of the character described, which comprises an outside shell having inlet and outlet openings for passage of tluid, tube-sheets at each end of the shell, tubes extending between said tubefsheets and projeeting therebeyond, a series of connections joining the projecting ends ot the tubes by groups, detachable cover means opposite the end of each tube, and a housing for said connections.

5. Apparatus of the character described, which comprises an outside shell having inlet and outlet openings for passage of fluid, tube-sheets at each end of the shell, tubes extending between said tube-sheets and pro-y jecting therebeyond, a series of closed connectionsjoining the projecting ends of the tubes in groups of more than two tubes, d'etachable cover means opposite the end of each tube, and a housing for said connections.

6. In apparatusof the character described, the combination of an outside shell having inlet and outlet openings for passage ot' fluid, tube-sheets in the shell, tubes extending between said tube-sheets and projecting therebeyond, said tubes being in a plurality a0 of tiers, a series-ot connections joining the I ends of the tubes, said connections being formed in a uniform`eonstruetional unit extending across each tier, and auxiliary connections joining tier to tier.

7. In apparatus of the character described, the combination of an outside shell having inlet and outlet openings for passage of Huid, tubesheets inthe shell, tubes extending between said tube-sheets and projecting therebeyond, said tubes being in a plurality of tiers, and a series of connections joining the ends of the tubes,- said connections being formed as a uniform constructional unit extending across each tier.

8. In apparatus ofthe character described, the combinationwith 1an outside shell having inlet and outlet openings for passage ot fluid, of 'tube-sheets in the shell, tubes extending between said tube-sheets, and pro- 11o jecting therebeyond, and a series of connections joining the ends of the tubes Within the shell in groups of substantially equal num- -bers of tubes.

ALEXANDER c. SPENCER.'

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