US2340853A

US2340853A - Heat exchanger for superchargers

Info

Publication number: US2340853A
Application number: US399969A
Authority: US
Inventors: Fred M Young
Original assignee: Individual
Current assignee: Individual
Priority date: 1941-06-27
Filing date: 1941-06-27
Publication date: 1944-02-08
Anticipated expiration: 1961-02-08

Description

Feb. s, 1944. E M YOUNG 2,340,853 HEAT EXGHANGER FOR SUPERCHARGERS Filed June 27, 1941 v 2 Sheets-Sheet 1 A T TO/YEY Feb. 8, 1944. F. M. YOUNG ,2,340,853

HEAT EXCHANGER FOR SUPRCHARGERS Filed June .27, 1941 2 Sheets-Shet 2 /2 OOO @C 06Go Q O O G 0 00g 0000@ /NVEHTOQ F250 yOU/YG ATTORNEY Patented Feb. 8, 1944 UNITED STATES PATE-NT OFFICE HEAT EXCHANGEB FOR SUPERCHARGEBS Fred M. lloung, Racine, Wis. A

Application June 27, 1941, Serial No. 399,969 -1 claim. (ci. 2st-24s) The present invention relates to air coolers particularly adapted for use on airplanes equipped with a supercharger.

Objects of the present invention are to provide a device which is strong, eillcient, durable and extremely light in weight.

- moved and header covers II-II are placed into Further objects of my invention are to provide a device which is simple, easily manufactured and assembled and easily installed.

Still further objects of the present invention are to provide a device from which some of the parts can be used on various sized units and wherein all or the larger part of the device may be made from aluminum sheets and commercial aluminum tubes.

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

Fig., 1 is a front elevational view of the preferred embodiment of my invention.

Fig. 2 is a top View of the design shown in Figure 1 less the header covers.

Fig. 3 is an end view of the device as shown-in Figure 2.

Fig. 4 is a transverse sectional view taken on line 4-4 of Figure l.

Fig. 5 is a fractional section taken on line 5-5 of Figure 2. Fig. 6 is a section similar to Figure 5 but illustrating a modication. l

Fig. 7 is a fractional longitudinal section taken on line I-'I of Figure 2 but including a fraction of the header cover.

As thus illustrated. the end tube plates It-Iil are made from thick aluminum sheets. Intermediate plates I2 are provided, which may be somewhat thinner than plates IIJ. Plates I and I2 are provided with closely spaced registering apertures through which tubes il extend, as illustrated.

I provide top and bottom plates I3 having end and side flanges I4. Plates III and I2 on their top and bottom' edges and the adjacent flanges Il are provided with spaced apertures forv the reception of bolts I5. l

Temporary bolts I are used for securing plates I0 to their flanges less the header caps. After bolts I5 are made taut, the tubes are expanded into their openings in the tube plates, so as to firmly anchor the tubes in the plates. The preferred method for this-operationis by the ball system which is too well known to require further description. A

position and made fast by means of bolts I8, the

Afront `and rear edges of plates I0 and the front and rear edges of header covers I'I are also provided with apertures for the reception of bolts I8 (see Figure 1) It will be seen that the header covers will b securely -fastened to plates I0 and that plates.

I0 and I2 wlllbe securelyfastened together by means of members I3 and Il and the tubes.

Header covers II are preferably shaped as illustrated and provided with suitable inlet and outlet openings I9-I9. These openings may be operatively connected to the supercharger and inlets leading to the engine (not shown) so the heated air, after it leaves the supercharger passes through tubes II and will be cooled by the blast of air forced around the tubes, as will hereinafter appean provided (not shown) and suitably secured to flanges Il or suitable ducts may be secured to the front and rear flanges, one leading to a suitable air supply means thus other than frontal pressure may be provided for forcing an air blast through the device.

It will be noted that the plates are relatively closely spaced and that they cooperate with members I3 to form a number of air ducts through which tubes II extend.

In devices of this type, it is desired that the air be forced through these air ducts at high velocity so as ao increase the heat exchange capacity of the device. It has been found that if the exposed part of the tube is very long, the action of the air will cause serious vibration `and in time destroy the tubes. invention is to extend the tubes through narrow ducts so the length exposed to the blast of air will not be great enough to permit vibration.

It will be seen by scrutinizing the various figures that members I3 are positioned in close proximity to the top and bottom rows of tubes, the. space being such as will permit about the same volume of air to pass between plates I3 and the adjacent tubes as will be caused to pass between the tubes. Thus the device will be eicient without the necessity of providing air locks, etc.

In Figure 6, I illustrate a modliication wherein intermediate plates-24 are provided with tube apertures which are somewhat iarger than the An object of this or synthetic rubber sleeves 25.

, tubes tightly held in the sleeves.

apertures shown in the other figures. They are made suitable for the reception of iinaged rubber The sleeves are designed so the tubes will flt tightly in the sleeves and in turn the sleeves will be held tightly in their apertures.

I provide a temporary tapered plug 28 in the ends of the tubes and the tubes are then forced into the assembly longitudinally, member 26 acting to permit the `tube to enter the sleeve by expanding the opening in the sleeve so members 25 will be tightly held in their openings and the After completion of the assembly, the ends of the tubes may be expanded in the apertures in end tube plates i0 in any well known manner.

An object of sleeves 25 is to form a suitable anchorage for the medial portion of the tubes and avoid the necessity of expanding the entire length of the tubes as already described.

Clearly members I3 may be used on two different width assemblies and these members may also be used on various length assemblies, and assemblies with various numbers of air ducts.

' against movements relative to the tube plates,

flanged plates positioned between opposite edges of said end and intermediate plates and co-operating therewith to form separate air ducts through which the tubes extend, flanges of said flanged plates ilatly engaging sides of the end and intermediate plates at their edges outwardly of said tubes, and bolts extending through said flanges and plates wherebysaid tubes and flanged plates are intimately secured together.

' FRED M. YOUNG.l