US1680471A - Radiator - Google Patents

Description

Patented Au 14,1928.

PATENT OFFICE.

THOMAS E. MURRAY, JR., BROOKLYN, NEW YORK.

RADIATOR.

Application filed August 8, 1925. Serial No. 48,929

My invention aims to provide an improved design of radiators having a high etficiency in proportion to their size and having other advantages referred to in detail hereinafter.

6 The accompanying drawings-illustrate an embodiment of the invention.

Fig. 1 is a plan;

Fig. 2 is a side elevation;

, Fig. 3 is a horizontal section on the line In 3-3 of Fig. 4;

, it is a side'elevation of an alternative embodiment of the invention.

According to Figs. 1 and 2 the vessel for the heating water, steam or other fluid is 1 composed of parallel lengths 1 and 2 of pip- 1 ing connected at one end by a bend 3 and provided with any usual or suitable accessories for admitting and discharging the heating fluid.

0 A radiating structure is applied to the heating vessel by Welding, soldering or equivalent engagement and is made of a sheet metal plate or plates bent in such a Way as to be conducive to high efficiency. In plan (Fig. 1) the radiatin structure comprises plates 4 approximate y transverse to the length of the vessel, the plates 4 being connected alternately at their inner and outer edges by short longitudinal plates 5 and 6.

80 The transverse plates 4 and connecting plates 5 and 6 may be formed by bending a single sheet to the required number of convolutions,

for each side of the radiator; or by using a number of separate plates each comprising a 5 few-convolutions, and uniting said plates to each other to make a radiating structure of the desired length, or they me. be formed in various other ways. The p ates in this way form vertically extending fines for the passage of the air about the heating vessel 1. and in contact with the radiating structure. In elevation also the plates are bent as shown in Fig. 2, the upper half 7 extending obliquely in one direction and the lower half 8 obliquely in the opposite direction so as to form a zig-zag pat for the ascending columns of air in the flues. Thus the air will travel a longer distance in contact with the radiating surfaces, will be forced to impinge against the sides of the fines in their upward movement, and will move more slowly than through straight vertical flues; thus securing a greater heating efliciency.

The metal can be stamped to the shape shown in Figs. 1 and 2 and to various other similar shapes or it may be made in sections like the parts 7 and 8; the upper edge of one oined to the lower edge of the other. The best material for this structure is copper or cuprous metal in various alloys, these metals being better adapted for radiating purposes than the more common iron and steel. Their increased conductivity and malleability 7 make it possible to provide such a radiating structure of very thin copper sheets and to get the same efficiency out of a structure so much smaller than an equally efiicient structure of iron or steel as to counterbalance, at least in a large'measure, the increased cost of copper. I i

'In Figs. 1 and 2, I have assumed the pipe 1, 2, 3 to be the ordinary round pipe generally made of iron or steel, though it may also be of copper or cuprous metal. Where the latter is to be used for the heating ves sel, however, the vessel may be made of the more eflicient shape shown in Figs. 3 and 4:. Here the vessel 9 is made of thin sheet metal, the vessel itself being high and narrow in cross-section so as to secure maximum contact with the heating fluid. It is enlarged and rounded to ordinary tubular form at one end 10 for connection of an admission valve and at the opposite end 11 for connection to another section of the radiator.

Figs. 3 and 4 also show the use of a radiating structure consisting of a plurality of zig-za sections similar to those of Fig. 2 and in icated as a whole by the numerals 12, 13 and 14. These may be made separately and welded together, the lower edge of one to the upper edge of the next, or similar multiple-zig-za shapes may be made of a sheet or sheets w ch are continuous from top to bottom. The vessel 9 is engaged by the radiating structure 12, and similar vessels 15 and 16 are engaged by the structures 13 and 14. The ends of the several vessels are provided with bends and couplings to form a continuous passage for the heating medium. Or several such vessels may be connected in parallel, instead of in series as shown; that is with an inlet pipe connecting with the one end of each vessel and an outlet pipe with the opposite end of each vessel. The radiator plates form lateral braces for the sides of the heating vessels, and may be supplemented by auxiliary braces ofany sort, permitting the use of very thin flexible sheet metal.

The invention is well adapted to indirect and similar heating systems in which a forced draft is used. In that case a plurality of radiators like Fig. 2 or Fig. 4 may be arranged side by side or one above another and the air forced through the zig-zag passages.

The radiator may be equally used for cooling air by circulating cold brine or the like through the pipes so that the latter become a heating element only in the negative sense, that is, they extract heat from the radiating structure and induce a flow of the cool air downward through the fiues similar to the upward circulation of air induced by the passage of steam through the ipes.

Various modifications of t e design and arrangement shown may be made by those In witness whereof, I have hereunto signed 30 my name.

THOMAS E. MURRAY, J R.

Images