US2366376A - Chimney type heat exchanger - Google Patents

Description

Jan. 2, F M YOUNG ET AL 2,366,376

CHIMNEY TYPE HEAT EXCHANGER Filed Oct. 23, 1942 '7 Sheets-Sheet l I N V EN TOR. FRED N YOUNG VV/LL/AM V STRUP Jan. 2, 1945. F. M. YOUNG ET-AL CHIMNEY Tix'PE HEAT EXCHANGER Filed Oct. 23, 1942 '7 Sheets-Sheet 2 6 W W M E A Mo EH 3 L 1945. F. M. YOUNG ET AL I CHIMNEY TYPE HEAT EXCHANGER Filed Oct. 25, 1942 7 Sheets-Sheet 3 INVENTORS fiQEO M You/vs ATTORNE' Y VV/LL/AM VAsTRL/P Jan. 2, 1945.

F. M. YOUNG ET AL CHIMNEY TYPE HEAT EXCHANGER Filed Oct. 25, 1943 7 Sheets-Sheet 4 INVENTORS F050 /7. You/vs WILL/AN VAsmz/P 4 F. M. YOUNG ETAL CHIMNEY TYPE HEAT EXCHANGER Filed Oct. 23, 1942 7 Sheets-Sheet 5 fie. 10

a. R Wm; mm 0 EN Fm m ATTORNEY Jan. 2, F M YQUNG ET AL 2,366,376

CHIMNEY TYPE HEAT EXCHANGER Filed Oct. 25, 1942 7 Sheets-Sheet 6 'ATro /vEY Jan. 2, 1945. F, M YO N AL 2,366,376

CHIMNEY TYPE HEAT EXCHANGER F le octfzs, 1942 '7 Sheets-Sheet 7 "*T INVENTORS FRED M. You/vs VVILLMM VASTR u GYM ATTORNEY Patented Jan. 2, 1945 CHDHNEY TYPE HEAT EXCHANGER Fred M. Young and William V. Astrup, Racine, Wis., assignors to Young Radiator Company, Racine, Wis., a company of Wisconsin Application October 23, 1912, Serial No. 463,088 3 Claims. "(oil 257-37) flat frame members, either with or without the of the fan support post and provide a shaft having universal joints forming an operating concores secured thereto and provide cores which may be packed and shipped detached from the frames.

Another object of the present inventionis' to provide a vertically arranged many sided heat exchanger with a number of cores occupying the space within two or more of the flat sides, the cores being adapted to condense steam, cool nat-- ural gas or the jacket fluid of an internal combustion engine. r 4

A still further object of our invention is to provide a multi-sided inclosure wherein one or more of the sides may act as frames for panels and the other sides for heat exchange cores and whereby oil cooling cores may be removably attached to the outside of all or certain cooling cores so the air entering theinclosure will be caused to first pass through the oil cooling cores.

A further object of our invention is to provide a skeleton frame to which' the cores or panels may be removably attached and having a concentrically positioned post with a horizontally positioned fan mounted thereon and means whereby the fan may be driven by a direct coupled motor or by a motor or pulley mounted on the outside of the inclosure and having rods adapted to anchor the top of the post'to the frame.

A still further object of our invention is to provide a fan shroud and mount it on the top of the inclosure and mount a circular in cross section relatively short chimney on the top of the fan shroud and provide triangularly shaped strips between the fan shroud and chimney to add strength to the assembly. I

Another object of the present invention is to provide an ingress door in one of the sides of the inclosure and a ladder adiacent the post that carries the fan so the operator may reach the fan and transmission for inspection.

A further object of our invention is to provide a motor support on the outside of the device and on substantiall the horizontal plane as the top 66 Fig, 13 illustrate the manner of securing the nection between the motor, and the fan gear box and providing a ladder brace from the outside "of the motor support to the bottom of the frame inclosure.

It is an object of the present invention to provide a vertically arranged chimney type-heat exchanger which may be installed on the roof of a building or on a suitable base on the ground and a device which is not materially efiected by windstorms.

An object of the present invention is to provide a skeleton frame which, when equipped with cores, panels, a fan shroud and chimney, will present a pleasing appearance and require minimum space horizontally.

To these and other useful ends, our invention consists of parts, combinations of .parts, or their equivalents, and mode of operation, as hereine after set forth and claimed and shown in the accompanying. drawings in which:

Fig. 1 is a perspective view of the preferred form of our invention. I

Fig. 2-is an enlarged fractional section through one of the frames taken on line 22 of Figure 1.

Fig. 3 is a horizontal section of the frame shown in Figure 1 taken midway the frame and looking down.

Fig. 4 is a fractional vertical section of the frame taken on line 4-4 of Figure 3.

Fig. 5 is a vertical section taken on line 55 of Figure 3.

Fig. 6 illustrates a fraction of the fan motor and fan housing support and illustrating the operating connection between the motor and fan housing.

Fig. 7 is a view similar to Figure 6 illustrating the driving shaft adapted to be driven by a sheave pulley.

Fig. 8 is a bottom view of the fan gear housing support taken on line H of Figure 5 and illustrating the bolts with which the top of the fan housing supporting post is anchored to the corners of the frame.

Fi 9 is a motor side view of a modified device adapted for jacket and oil cooling cores.

Fig. 10 m an elevational side view of the device shown in Figure 9.

Fig. 11 is a top view of the device as shown in Figures 9 and 10.

Fig. 12 is an enlarged fractional detail illustrating the fastening of the cores to the frame 11. lustrated in Figures 9 and 10.

- acter C. The fan gear housing and supporting means, including the ladder which connects the two supporting means together, is designated by reference character D. Reference character E designates the motor and F designates the fan shroud and the chimney in their entireties.

The supporting frame comprises vertical posts It, the bottoms of which are connected together by means 'of pairs of angle irons H (see Figures 1 and 2). The tops of members It are secured together preferably by means of channel irons I'2-l2 (see Figure -2) thus forming frames for the reception of members B or C.

Our device may be equipped with a panel C, in one frame only. In some installations, two of these panels are used in opposite frames. The panels preferably comprise three members l3 of a standard sheet metal width which are provided with edge fianges and secured together preferably as illustrated.

The sides of member C are fastened to members I in any convenient mann'erand the ends are secured to members II and I 2 in any convenient manner. Member C is provided with an access door I 4.

Members B are preferably made of a width so four of these members are required, arranged vertically, to fill a frame as illustrated in Figure 1. We preferably space the two inner members apart far enough for a stifiening member Hi. In cores of the class there is necessarily a slight opening between adjacent fins. We provide means It for covering these openings for appearance sake and to prevent air from passing into the inclosure without contacting the fins.

Members B each comprise an upper header 20 having flanges 2l--2| with which to secure the headers to member l2 as illustrated. We provide a bottom header 22 which is slidably mounted between members II, the headers being operatively connected together by means of tubes 23 having a, multiplicity of closely spaced fins 24 through which the tubes extend, forming a core.

For assembling p rposes, blind plugs 25 are threaded into the outer walls of the headers and in line with the tubes so an instrument may be inserted for expanding the tubes into the headers, boiler plate fashion.

Two spaced threaded flanges 26 are provided in each upper header (one not shown) and midway the length of the header and between these flanges; a partition 2'! is provided. Inlet and outlet pipes 28 are screw threaded into flanges 26 thus providing .a two pass core.

On the top of the frame assembly, we provide a plate 29 having openings 30 through which pipes 28 extend. It will be seen that any desired connections may be made from the top of the frame structure into the various headers so the headers may be connected in multiple, series, or in multiple series to the source of steam or gas. Plate 29 is provided with a large circular opening 3l' on which is mounted an upwardly converging fan shroud 32.

We mount on the top of member 32 a relatively short chimney 33 and stifien the assembly of the fan shroud and chimney by means of spaced triangularly shaped braces 34. Member 32 must be circular at its top for the mounting of chimney 33 and either circular at its bottom as shown, or having the conventional fan shroud shape wherein the bottom is square for mounting on plate 29 or in case of the smaller units, the bottom of member 32, when square, may be mounted directly on members l2.

By scrutinizing Figures 1 and 2, it will be seen that header 20 is fixed in its position and header 22 slidably mounted so tubes 23 are free to expand and contract independent of the frame. Generally, in the present design, opposite frame sides are filled with cores B and the other two frame sides are filled with panels C although in some installations, cores may be supplied on three sides and two of the cores may be supplied to the remaining frame, leaving a single panel l3 on which to mount door I4.

Referring now to Figures 3 through 8. Spaced transverse L-irons 40 are. detachably secured to members II in the position shown in Figure 3. We secure a. plate 4| on these members as clearly illustrated in Figures 3, 4 and 5 and attach to this plate a flange 42 to which a relatively large pipe 43 is secured. Another plate 44 is similarly secured to the top of tube 43 as illustrated in Figure. 5.

Pipe 43 is of a length which will position plate 44 substantially on the same plane as the top of members l2. 0n the top of this plate, we mount a fan gear housing 45 in which a fan, designated by numeral 46 is vertically rotatably mounted by means of a shaft 41. The blades 48 of the fan have a diameter slightly less than the inside diameter of members 33.

We mount a bevel gear (not shown) on shaft.

41 and a shaft 49 is operatively connected to the bevel gear by means of a pinion (not shown) the pinion being of a size to considerably reduce the speed of the fan relative to the speed of motor E which is connected to shaft 49 by means of a propeller shaft 50 and two universal joints 5 |5 l. The inner end of propeller shaft 50 is rotatably mounted on plate 44 by means of bearing block 52.

We mount a bracket 55 on member I 2 in any suitable manner as a. support for the motor and provide a ladder 56 which is secured at its upper end to the outer end of bracket 55 and at its lower end to member H, as illustrated in Figure 1. Another ladder 51 is secured to plates 4| and 44 as illustrated in Figures 3 and 5.

It will be seen that the attendant has access to the interior of the inclosure through door l4 and to the fan and its driving mechanism by means of ladder 51 and that the attendant also has access to motor E because of ladder 56.

The frame (as shown in Figure 4) is preferably mounted on a concrete foundation including cross bars 40 thus a substantial support is provided for the fan and its housing as illustrated.

As illustrated in Figure-8, we provide anchor bolts 58 which are secured to members Ill and to tube 43 as illustrated in this figure. In Figure 7,

we illustrate other or modified design for driving the fan either by flat or V belts (not shown) wherein the outer end of a propeller shaft 59 is rotatably mounted on a bracket 60.

The innerend of shaft 59 is rotatably mounted on bracket 52 and connected to the protruding end of the gear housing shaft by means of two universal joints 6I6| and a short splined shaft 52. In order to provide a rigid support for the extended end of member 44, we provide a brace I53 suitably secured to the plate and to the tube as at 64-454.

It will be seen that we have provided a rigid frame structure and panels and cores which may be secured to this structure and means whereby the frames can be separated for knocked down shipment either with or without the cores and panels.

It will be understood that the two side frames may be made integral to which cores B may be detachably secured as illustrated. The other two frames need not necessarily have side angles. the frames being formed by means of angle irons II and I2 and three panels I3. The sides of the outer panels are bolted to members I as at I1. One of these side frames may, as previously stated, be filled by cores B.

Two spaced members 40 are removably attached to members I I I see Fig. 3) The two memhers I I and I2 are removably attached to panels I3 and members B, so the entire assembly may be easily knocked down for shipment and easily erected at its destination, the structure being such as will make it convenient for mounting the device on the roof of a building or on a concrete foundation as shown in Figure 4. In any event, a strong wind in anydirectiomcannot seriously interfere with the air circulation set up by the fan. The design is such that the capacity of the device is exceptionally large relative to its size and we hav provided a device which is pleasing in appearance and adapted to withstand any kind of weather conditions.

In Figures 9 through 13 we illustrate a modification wherein all of the parts of the inclosure, and the fan mechanism, are very similar to that shown in the other figures, differing only in the cores and their fastenings to the frame as follows:

In this modification, the main cores are adapted to cool the jacket fluid of an internal combustion engine and other cores are adapted to cool the oil of the engine served.

In Figure 9, it will be seen that the panel parts of the frame may be similar to-that shown in Figure 1. In this design, the main cores are designated in their entirety by reference characters G and the oil cooling cores are designated in their entireties by reference characters H.

Cores G comprise upper and lower headers 10. the upper headers being positioned so the inletor outlet connections (I ar preferably in the position shown in Figure 10 and the lower headers being positioned so the inlet and outlet; connections are in the position shown in this figure. The upper headers are rigidly secured at their ends to angle bars III by means of cap screws 12 and at their inner ends (not shown) in a similar manner to a channel bar 13 (see Fig. 10).

Bottom headers 70 are similarly mounted between members I0 and I3 except that slots (not shown) are provided in these members so the cap screws may be arranged to permit fre ex- Dansion and contraction of the tubes in the cores. The headers are operatively connected by means of individual cores G similar to that shown in Patent Number 2,037,845. issued April 21, 1936 Fred M. Young and Patent Number 2.108.223. February 15, 1938, Fred M. Young.

We provide preferably four main headers IQ (see Figure 10) and six supplemental header for each frame The main headers are provided with faces as at 16 (see Fig. 12) and supplemental headers 11 are provided with faces I8 which register with faces IS. A gasket is positioned between these faces and registering openings are provided so when the headers are made taut by bolts as at 19, operating connections between headers 10 and 71 are provided by means of tubes having a multiplicity of closely spaced fins 8I through which the tubes extend forming a core between the main headers.

Cores G are quite long and in some installations a. supplemental header 95 is provided intermediate headers H (see Figures 10 and 12). Headers 82 consist of a frame having tube plates 83 which are removably bound and sealed to frames 80 by means of gaskets 84. metal strips 85 and bolts 86. This intermediate header construction is too well known to require further description and is shown in Figures 5, 6 and 7 of Patent Number 2.237.516, April 8, 1941, Fred M. Young. A

The object of making cores G in two parts is to simplify the manufacturing process. it being somewhat diflicult to handle heavy cores eight or ten feet long when made integral.

It will be seen by scrutinizing Figure 10 that cores G are mounted directly on the frame and that cores H are supported on'cores G in the following manner:

Cores H may be made with single length tubes or divided similar to cores G. In the present showing. they are made in a single length having upper and lower headers 81. 'hvo of these cores ar preferably the same width as three cores G (see Figure 10) th headers being connected together by a single row of tubes 88 having a mult plicity of closely spaced fins 89 through which the tubes extend.

Headers 8T are provided with upwardly and downwardly extending brackets 80 (see Figures 10 and 12) which are positioned on headers 81 so they lie directly over certain bolts I9 (see Figure 10) The manner of fastening these flanges to headers I1 is illustrated in Figures 12 and 13 wherein studs 9| are screw threaded into headers 10, the ends protruding through openings in headers IT. A hexagonal member 92 is threaded at both ends and used as a nut for holding headers TI to headers 70. This member 92 is of a proper length so brackets may be secured to its end by means of cap screws 93.

It will be seen that cores H may be convenient y attached to cores G, each core having inlet or outlet connections as at 94. Clearly these inlet and outlet connections may be used so core H may be connected in series. or series multiple or one of headers 81 may be provided with a partition so as to make a two pass core of each unit.

It will be seen that two or three sides of the inclosure may be equipped with jack-1t cooling cores and as many oil cooling cores may be supplied as is necessary to cool the oil from the en lne served.

In Figures 10 and 12 we disclose a cross brace 95 suitably secured to members I0 and 13 so as to form an anchor for the vertical center of the cores. This anchor may also be used to anchor cores G if found necessary. It will be seen that the jacket cooling fluid and the oil of large in ternal comjiujign engines of the Diesel type may be eflicientlymoled.

In Figure 14 we disclose a further modification wherein the fan gear housing 96 i supported on plate 91 and this plate is anchored to the bottom of the frame as at 98, by means of suitable anchors 99. Plate 91 is'supported on the foundation by means of a pedestaled tube I00. This design is better adapted for smaller units wherein the ladders are not necessary and the motor bracket can be eflicientlysupported by means of a short brace Ill.

It will be understood that we have provided a knocked down type inclosure which can be easily adapted for detachably mounted cooling or condensing cores, that the device is simple, easily manufactured, pleasing in appearance and adapted for outdoor service.

Having thus shown and described our invention, we claim:

1. In a heat exchange core and mounting therefor in a rectangular frame of a multisided heat exchanger housing having a horizontal blade fan at its upper end, and wherein the rectangular frame includes a pair of U-shaped channel bars at its upper end with the closed sides vertical and spaced from each other, and a pair of spaced angle irons at its lower end, said core comprising top and bottom headers operatively connected by finned tubes, the top-header being attached to and suspended from beneath said channel bars, inlet and outlet pipes for the top header extending upwardly between said channel bars and the bottom header being freely and slidably disposed be tween the vertical sides of the angle irons at the lower end of the frame.

2. In a heat exchange core and mounting therefor in a rectangular frame of a multisided heat exchanger housing having a horizontal blade fan at its upper end, and wherein the rectangular frame includes a pair of U-shaped channel bars at its upper end with the closed sides vertical and spaced from each other, and a pair of spaced angle irons at its lower end, said core comprising top and bottom headers operatively connected by finned tubes, the top header being connected to the base flanges of said upper channel bars, inlet and outlet pipes for the top header extending upwardly between said channel bars and thebo'ttom header being freely and slidably disposed between vertical sides of the angle irons at the lower end of the frame.

3. A heat exchange core and mounting as set forth in claim 2, wherein the connection between the top header and channel bars includes side flanges on the top header secured to the undersides of the horizontalfianges at the lower sides of the channel bars.

FRED M. YOUNG. WILLIAM V. ASTRUP.

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