US1585802A

US1585802A - Heat exchanger

Info

Publication number: US1585802A
Application number: US701884A
Authority: US
Inventors: Louis N Udell
Original assignee: Individual
Current assignee: Individual
Priority date: 1924-03-26
Filing date: 1924-03-26
Publication date: 1926-05-25
Anticipated expiration: 1943-05-25

Description

May 25 1926.

L. N. UDELL HEAT EXCHANGER 2 Sheets-Sheet Filed March 26, 1924 .rl IIIIIIIIIIIIIIII Patented May 25, 1926.

Miran s'r'r rnru'r oFFicE. v

LOUIfi N. 'UDELL, OF BOSTON, MASSACHUSETTS.

HEAT EXCHANGER.

Application filed March 26, 1924. Serial No. 701,884.

heat is to be exchanged by means of two pipes, one within the other. This construction is somewhat diflicult and expensive to' make and assemble, and one object of the present invention is to provide a simple, economical and easily assembled, structure which shall function to equal or. greater advantage as compared with'the two-pipe system. Another object is to provide an im- 1proved construction of cooler for taking the eat out of liquids and gases in refrigerating apparatus that will more rapidly and effectively dissipate the abstracted heat than the two-pipe system referred to. A further object is to provide a construction of heat exchan er which will permit of the easy assembling, and separation of the two conduits carrying the respective liquids. Other objects and attendant advantages of the invention will be apparentto persons skilled iin the art as the same becomes better understood by reference to the following detailed description, taken in connection with the accompanying drawings in which I have illustrated a simple and practical embodiment of the principle of my invention, and wherein-' v Fig. 1 is a side elevation of my improved heat exchanger with a portion broken away and in section; v

Fig. 2 is an end elevation viewed from the right of Fig. 1, with the tank and one trough in vertical section;

Fig. 3 is a perspective elevation of a frag-- ment of one of the troughs and its supporting bracket.

Referring to the drawings, 1O designates as an entirety each of a group (herein shown as three) of zigzag vertical coils located side by side in close juxtaposition. Underly ng alternate limbs of these coils are

open troughs

11 and 12. Said troughs are formed with closed ends 11' and 12' respectively,

comprises a collar 14 encircling t and with opposite

open ends

11 and 12", re-

spectively; thev closed end of each trough being somewhat higher than its open end,

as clearly shown in Fig. 1, so as to prevent any possibility of lateral overflow of the liquid discharging from the low end of each trough into the high end of the next underlying trough. To permit the troughs to be made of uniform width, the side walls at the closed end of each trough, which receive between them the discharge end of the next underlying trough, are outwardly-offset as shown in Fig. 2.

To support the troughs I may employ a series of posts 13 on each of which is mounted a group of supporting brackets properly spaced to seat the several trou hs. As clearly shown in Fig. 3, this bracket preferably e post 13 and fastened thereto by a set screw 15 or other equivalent means, a bracket plate 16 integral with or attached to the collar 14, and an arm 17 fastened to the bracket plate 16 as by bolts 18 and of sufficient length to span the bottom of the trough and having an upturned end 19 embracing the outer side of the trough. It will be observed that the adjacent limbs of the coils are slightly inclined in opposite directions and that these limbs lie upon and are supported by the bottoms of the troughs. ThlS insures a gravit flow of the cooling liquid from each troug 1 to the next underlying trough in a zigzag course; but the inclination of the troughs is suflicientl slight to make the flow slow enough to a ways insure the submerging of the limbs of the coils, exce t their curved end connections, in the cooling liquid.

The top limbs of the several coils are connected by curved pipes 20, preferably of reduced size as shown, into an upper trans verse header or manifold 21; and the lower limbs of the coils are connected b straight pipes 22, preferably of reduced size, into a similar header or-manifold 23.

For convenience in disposing of the cooling liquid discharged from the lowermost trou h, the unit is mounted ina tank T provide with an overflow outlet 24 slightly below the bottom of the lowermost trough.

lower headers respectivel is not essential but is preferably employe for practical reasons in construction, since making'it easier to effect tight'connections by welding.

It will readily be seen that the troughs or

pans

11 and 12 can be withdrawn whenever required for cleaning or repair and then reinserted by a simple endwise movement, without disturbing the coils, and each trough or pan can so be withdrawn entirely.

independently of the others.

The described apparatus is preferably operated in the counter-current or counter flow manner, the liquid or gas to be cooled being introduced through the lower manifold 23 under pressure, and being discharged through the upper manifold 21, but manifestly, so far as the structure and its advantages are concerned, the direction of flow is immaterial. The cooling liquid, of course, flows slowly by gravity from top to bottom, flowing from the discharge end of each upper trough or pan into thereceiving end of the next underlying trough or pan, and maintaining a continuous submer ence of the limbs of the coils. Another :1 vantage of the use of the troughs or pans is that a single trough may be made of sufficient' width to embrace the corresponding horizontal limbs of any number of coils placed side by side, thus effecting a considerable economy in construction. Where the system employs a considerable number of coils dis osed side by side, the trough supports will preferably take the form of underlying cross-bals supported at their ends by posts on both sides of the coils. It is believed that the foregoing description will make clear to persons skilled in the art the novel economies of construction and maintenance, and other recited advantages of the invention. tails shown and described for purposes of illustration are not of the essence ofthe invention, but may be variously modified within the skill and judgment of the engineer without involving any departure from the invention or sacrificing any of the advanstructural features, practical Manifestly the specific structural de-' tages thereof. Hence I I reserve all such variations and modifications as fall within the spirit and purview of the appended 1 claims.

.I claim- I 1. In' a heat exchanger, the combination of a zigzag ,coil having its limbs connected by integral bends and disposed in a vertical plane, and two oppositely facing series of endwise removable troughs underlying alter- .nate limbs of the coil respectively and to- 2. In a heat exchanger, the combination of a zigzag coil disposed in a vertical plane, and two oppositely facing series of inclined troughs underlying alternate limbs of the coil respectively. and together wholly enclosing the bottoms,'sides and'ends of said limbs; each of said troughs having a low open discharge end and a closed high receiving end formed with outwardly offset upward extensions of its side walls between which extensions tlie'open discharge end of the next upper lying trough is entered.

3. In a heat exchanger, the combination of a group of vertical zigzag coils disposed side by side and contiguous with corresponding limbs thereof lying in common transverse planes, two oppositely facing groups of lengthwise removable oppositely inclined troughs underlying alternate groups of limbs of said coils respectively, with the discharge end of each upper trough delivering to the receiving end'of'the next underlying trough, posts mounted'alongside said coils, adj ustablebrackets on said posts underlyin and supporting said troughs, horizonta l manifolds disposed crosswise of the opposite cnds'of-thc' coils, and pipes connecting each manifold into each coil.

LOUIS N. UDELL.