US1969985A - Radiator - Google Patents

Description

Patented Aug. 14, 1934 PATENT QFFEE RADIATOR Thomas Ernest McGrail,

Montreal, Quebec,

Canada, assignor to Warden King Limited, Montreal, Quebec, Canada Application June 6, 1931, Serial No. 542,513

3 Claims.

The invention relates to radiators, as described in the present specification and illustrated in the accompanying drawing that forms part of the same.

The invention consists essentially in the formation of the tubes, particularly in the wall type of radiator, whereby the paths for the convection currents are made tortuous through the varying cross sectional shapes of the said tubes carrying the fins as pointed out in the claims for novelty following a description of the details of the invention.

The objects of the invention are to maintain the circulation of the air in wall recesses throughout the radiator tubes, and yet eliminate a too speedy flow of such air and thereby economize in the consumption of fuel and concentrate the air for any apartment in the heating zones prior to delivery into the room; and at the same time to insure the maximum heating surfaces,

and conform as far as possible, to factory methods in the production of these wall radiators; and generally to effect good radiation of well heated air at the lowest cost in the production of the heat energy.

In the drawing, Figure 1 is an elevational view showing a tube of a radiator of the sloping fin type set in barrel shaped heads.

Figure 2 is an elevational view of two such tubes, together with supporting heads and having the fins sloping in contrary directions and interlapping.

Figure 3 is a cross sectional view on the line 33 in Figure 1.

Figure 4: is a cross sectional view on the line 4- in Figure 1.

Figure 5 is a cross sectional view on the line 5--5 in Figure 1.

Like numerals of reference indicate corresponding parts in the various figures.

Referring to the drawing, the radiator sections illustrated in this invention and indicated by the numerals 31 and 32 are adapted particularly to wall recesses in the most modern form of radiation.

These sections have fins 33 made in disk shape and surrounding the tubes 34 and 35, the said fins sloping preferably one way in one tube and the opposite way in the other tube, with the result that the fins interlap between the heads 36 and 37, and 38 and 39 respectively, these heads being shown as of barrel form with the flats 40 and 41 through which the connections are made. All of the fins 33 taper in longitudinal sectional shape to comparatively thin edges and are usually made circular in shape.

The tubes 34 and 35 are of varying cross sectional shapes beginning at one end in an upright oval 42 which gradually widens to a circular shape 43 and still further widens to produce a horizontal oval 44 at the other end. This is, of course, describing the radiator as set horizontally in respect to the length of its tubes or pipes. Naturally, this radiator may be set diiferently, but for convenience and clearness in description, it is better to so describe it. The result of this is that the fins may take a different shape in respect to the tubes, though that is not necessary and the only difference is that the fins will disclose much greater surface areas above and below the pipe at the center and towards the horizontal oval, and the other way around, discloses greater surface areas at the inside and at the outside of the pipes where it extends towards the vertical ovals.

The cooperation of these fins and tubes in varying the fiow of the convection currents is most useful in the radiation of heat, in and above the radiator tubes and fins, with the result that comparatively great heat is obtained in a small recess for delivery to the room.

The preferable way to make these wall radiators is by casting the sections, though naturally they may be stamped. out if it is found desirable, to make them in that way, but for reduction to low cost in mass production, the casting method for this type of radiator is preferable.

What is claimed is,

l. A radiator section comprising a tubular member having varying cross sectional shapes at different points in its length and extending at either end into a suitably shaped head.

2. A radiator section having a tube formed with vertical oval, horizontal oval and circular cross sectional shapes at different points in its length, and fins suitably spaced and extending from the tube in chosen directions.

3. A radiator section comprising a tube having a vertical oval cross sectional shape at one end, merging into a circular sectional shape at the middle of the tube and merging into a horizontal oval shape, at the other end and joining at either end heads of suitable shape, said tube having oblique projections therefrom spaced apart and forming heat distributing fins.

THOMAS ERNEST McGRAIL.

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