US1960955A

US1960955A - Radiator-unit and method of producing the same

Info

Publication number: US1960955A
Application number: US551324A
Authority: US
Inventors: Adolph C Recker
Original assignee: Chase Companies Inc
Current assignee: Chase Companies Inc
Priority date: 1931-07-17
Filing date: 1931-07-17
Publication date: 1934-05-29
Anticipated expiration: 1951-05-29

Description

May 29, 1934. A, c. RECKER RADIATOR UNIT AND METHOD OF PRODUCING THE SAME Filed July 17, 1931 Patented lvl-y 29, 1934 RADIATOR-mur ME'rnoD 4or PRonucING THE SAME V VAdolph C. Reckr, Oakville, conn.,a.sslgnorto ,"The Chase Companies,- Incorporated, Water-- bury, Conn., a corporation l Appliauon July 17, 1931, serinuo. 551,324 f f aclantis.` cl.z9-157.`3)

This invention relates to .an improvement in heat-transfer units and methods of producing the same, and particularly to that type of heat-transfer unit consisting of a tubeand a series of fins or plates `mounted thereon andv provided with collarsor sleeves engaging the same. Such units, While commonly referred 'to as radiator units, are useful ina wide variety.` of situations where it is desired to effect the transfer of heat, such for instance, as heating systems, cooling and refrigerating apparatus, etc. The lmain object of 4`my present invention is to provide, at a relatively low cost for manufacture,

. a strong and rugged radiator unit constructed with particular reference to insuring an intimate heat-conductive engagement between the sleeves or collars of the iins or plates and the tube upon which the same are mounted, to thereby provide for the eicient and effective transfer of heat 2 from a fluid in the said tube or tubes, and the circumambient medium (usually the surrounding air) or vice versal with the aboveh and other bjects' in view as will appear from the following, my invention consists in a radiator unit characterized by a tubular body` member; and a series of nor through which the said tubular body-member extends, and each provided with an offsetting sleeve.

3 or collar formed adjacent its point of junction with with a recess in which is installed the outer end l of the sleeve or collar of an adjacent plate-mem' spective outer ends of the said sleeves being intimately engaged with the inner surface of the said recess in the sleeve of. anadjacent plate-member by being expanded thereinto; whereby the respective sleeves of the said plate-members are maintained in enegagement with the said tubular bodymember and prevented from flaring.

' My invention further consists in a radiatorelement characterized as above and having certain other details of construction and combinations of parts as will be hereinafter described and particularly recited in the claims.

My invention still further consists in a novel method of manufacturing a radiator-element having a certain sequence of'steps' or operations as will be hereinafter described and particularly recited in the claims.

In order that the novelty of my'invention may be more fully appreciated, I wish to point out at such practice, while in plate-members the plate-member proper, from which-it offsets` this time that it is. old .practice to assemble a `series ofradiating-plates, each having an offsetting tubular collar upon atubular body-member, and to secure the said fins in place by expandingthe tubular body-member in an effort to secure intimate engagement between the sleeves of the plates and the tubular body-member, but

many respects superior to other practices, has'been relatively ineffective for the reason that the sleeves or collars of the respective plate-members were apt to flare or bell- `mouth into conical form as a result of the `expanding operation, and thus fail to lie in intimate contact with the bOdy-inember'as is required lif maximum efliciency is to be had from the element. The difllculty dust mentioned is effectively overconrle'andv obviated by means of my invention, as will be apparent from the following.

In thejaccompanying drawing:

Fig. 1 is a broken view in side elevation of one form which a radiator-element embodying my invention may assume;

Fig. 2 is a broken view inside elevation of the tubular body-member prior to the assembly of the fins or plates thereupon; 80

Fig. 3 is a face view'of one of the plate-membersdetached, looking toward the recessed end ofV its sleeve; g Fig. 4 is a view thereof partly in edge elevation and partly in transverse section; 8,5

Fig. 5 is a broken view in longitudinal section of the tubular body-member, showing a series of plates such as is shown in Figs. 3 and 4, assembled thereon and prior to the expansion of the bodymember to bring the outer surface thereof in intimate engagement with the respective sleeves of the said plates;

Fig. 6 is a view thereof in transverse section, taken on the line 6-6 of'Fig. 5;

Fig. 7' is a. broken longitudinal sectional view corresponding to Fig. 5, but showing the relative positions of the parts after an expanding tool has been passed through the body-member; and

Fig. 8 is a transverse sectional -view thereof,

sleeve or collar 12 formed adjacent its point of 110 junction with the plate proper, with an annular outwardly-offset portion 13 providing an internal annular recess 14 for the reception ofthe outer end of the sleeve of an adjacent fin, as will hereinafter appear.

The tubular-body-member 10 and the series of plates 11 are assembled together in any approved manner such, for instance, as sliding the said plates over the tube, or by first lining up the series of plates 1and passing the body-member 10 through the aligned sleeves 12, in such manner that the outer ends Yof the respective sleeves 12 are nested within the annular recess 14 by the A next adjacent sleeve, in themanner shown in Figs. 5 and 6.

With the parts assembled as illustrated in the figures just above referred'to, the tubular bodymember is expanded outward by any approved means such, for instance, as the expanding tool 15 indicated by brokenlines in Fig. 1, to bring its outer surface into intimate engagement with the inner surfaces of the respective sleeves 12 of the plates l1 to insure the maximum heat conductivity between the said plates and the bodymember 10.

I wish to call particular attention to they. fact that the sleeves 12 are prevented from being flared out of intimate contact with the bodymember 10, by reason of their having their outer ends anchored within the recess 14 of an adjacent.

sleeve. Furthermore, when the tubular bodymember 10 is stretched outward into engagement with the inner surfaces of the respective sleeves 12, as just described,'the outer surface 'of the projecting end of each of the said sleeves will be also brought into intimate engagement with the Vinner surface of the particular recess 14 into which it projects, and thus not only stabilize the plate-member into which it projects, but provide for the radiation of heat in either direction through the sleeve of one member and the plateportion proper of an adjacent member. Thus not only does each individual plate transmit heat through the intermediary of its own integral sleeve, but also through the `intermediary of the outer end of the sleeve of an adjacent plate by virtue ,of the intimate nesting and yassociation referred to.

The outline of the plates 11 maybe polygonal,

as shown, circular or any other desired form..

Also, if desired, the cross-sectional form of the tubular body-member 10 may be varied as desired, provided only that the sleeves 12 of the plates installed thereon are appropriately shaped in cross-section and nested before the expanding operation.

It will be appreciated in this connection that an air gap, even of small extent, provides a relatively-high degree of insulation so that the prevention of any appreciable flaring of the` respective sleeves 12, during the expanding operation, is essential to a high degree of thermal efliciency.

mounted upon said tubular body-member and each having a heat-radiating fin provided with an inner tubular ,surface and an offsetting, continuous, tubular sleeve; a substantial intermediate tubular area of the interior of each sleeve being in intimate, metal-to-metal, flow-pressedtogether contact with the outer surface of said tubular body-member; the inner tubular surface of each fin where it joins its sleeve, and the adjacent tubular portion of the sleeve, being spaced from the outer surf-ace of said tubular body-member; and the tubular free end portion of the sleeve of each intermediate plate being between, and in intimate, metal-to-metal, flowpressed-together contact with'the outer surface of said tubular body-member and the inner tubular surface of a fin and its adjacent sleeve portion which are spaced from the tubular bodymember.

2. The method of making a radiator-unit comprising: providing a tubular body-member; providing a pluralityl of plates, each having a heatradiating iin provided with an inner -tubular surface and an offsetting, continuous, tubular sleeve; the diameter of the inner tubular surface of each fin `and its adjacent sleeve portion being large enough to receive the outer tubular surface of the free end portion of .each sleeve.' and the inner diameter of the free end portion of each sleeve being vof a size to fit upon the tubular body-member;` assembling said plates in a series upon said tubular body-member with the free end portion of the sleeve of each intermediate plate-between the outer surface of thetub'ulai` body-member and the inner tubular surface of a fin and its adjacent sleeve portion of an adjacent plate; and subjecting the interior of the tubular. body-member to an expanding force, to flow-press the outer surface of the tubular body-member into intimate, metal-to-metal contact with a substantial, intermediate, tubular area of the interior of each tubular sleeve and to flow-press the outer tubular surface of the tubular body-member intointimate, metal-tometal contact with the inner surface of the free end portion of the sleeve of each intermediate plate and to flow-press the outer surface of each free end portion of the sleeve of each intermediate plate into intimate, metal-to-metal lcontact with the inner tubular surface of a fin and its adjacent sleeve portion of an adjacent plate.

' ADOLPH C. BECKER.