US1758209A - Heater - Google Patents

Description

A. WILSON May 13, 1930.

HEATER Filed June 14', 1928 Cit Patented May 13, 1930 UNITED STATES PATENT OFFICE ALBERT WILSON, OF PITTSBURGH, PENNSYLVANIA, ASSIGNOR TO PITTSBURGH ROLLS CORPORATION, OF PITTSBURGH, PENNSYLVANIA, A CORPORATION OF PENNSYL- VAN IA HEATER Application filed June 14,

My invention consists of an improvement in heaters for oil or other fluids for use as fuel in the form of a spray, by means of waste heat. It has for its object to provide a simple, cheap and effective means for abstracting the waste heat through a tortuous path of circulation through one or more chambers, to gether with certain features of construction, as shall be more fully hereinafter described.

Referring to the drawings showing one preferred embodiment of the invention:

Fig. 1 is a plan view of the heater;

Fig. 2 is a view in side elevation, partly in section, on the line II1I of Fig. 1;

Fig. 3 is a detail sectional view on the line IIIIII of Fig.

For the purpose of providing a closed cir culating chamber for Waste or other heat I utilize one or more cylindrical vessels 2, of large diameter pipe or the like, having closing ends 3 and 4. These are tightly connected by rods or bolts 5 with intervening packing material to flanged heads mounted on the ends of vessels 2 and preferably having inwardly extending flanges (i as of angle iron, as shown.

An inlet connection 7 for gases. etc., from any source of waste heat, as a furnace, leads through one side of the tank near its bottom, and a similar connection 8 leads outwardly from the opposite side near the top, for circulation of heating gases. \Vhere two or more such tanks or chambers are used, as shown, the connection 8 may join the tanks, and an outlet connection 5) is correspondingly located at the opposite lower side of the other tank. A pump or exhauster 10 is connected with the outlet conduit for etiecting suction and induced circulation through the machine.

Oil or other fluid to be heated is introduced by a. pipe 11 through a stutiing-box connection 12 with bottom 4 to the interior.

The pipe 11 is formed into a coil 13 within the chamber throughout its length as shown, and the pipe leads through connection 8 to the upper end of the second chamber, where it continues by a similar coil 14 to the bottom. The pipe finally extends through stuffing-box connection 15, by its outlet terminal to any suitable point of discharge. The heated oil under proper pressure becomes atom- 1928. Serial No. 285,299.

ized as it is discharged from the terminal nozzle or other burner element of delivery pipe 16 in the form of a fine spray, best adapted for combustion in any suitable furnace or chamber, for heating as desired.

For the purpose of bringing the hot gases into intimate contact with the circulating coil or coils I provide a series of alternating baflie plates 17 arranged within the chamber as shown in Fig. These plates extend inwardly between adjacent coils, closing the cross area at one side and leaving a comparatively restricted circulating space 18 at the opposite free edge of the battle.

By locating such bafiie in alternating arrangement, the hot gases pass through the chamber in an alternating path and with a. certain degree of retardation, effecting complete contact with the coil and abstraction by its contents of the heat from the hot gas, to a comparatively complete degree. Thus, with hot gas entering the chamber at a temperature of say 350 -600 F., oil in the coil will be. raised to a temperature of say 180 F. with a proportionate reduction in the temperature of the hot gas.

ll'here a pair of chambers and a pair of coils are utilized as in the drawing, the coils may be easily made in two sections joined by a flange or other suitable connection 19, pret erably at one side or the other of the circulating conduit 8. to avoid undue throttling tberethrough. The baflles 17 as shown are arranged across the main area of the chamber or tank and at an inclination generally conforming to the sloping space between the spi ral coils, so as to leave ample intervening space by such convenient arrangement.

in ope ation. the flow of the hot gases is induced by the action of the pump 10 at a speed and degree of suction, dependent on the power of the pump. its speed of operation, etc. The oil to be heated is passed through the coil or coils, and due to the construction provided and the close, intimate and continuous contact with the heating element, as hot gases, passes outwardly through the delivery section 16 at a relatively much higher temperature. The degree of heat may be readily regulated by control valves, either in the oil circulating line or in the incoming or outgoing conduits T or 9, for the hot gases, whereby to quite definitely control and regulate the operation.

It will be understood that the particular design, dimensions, arrangement of parts and other details of construction may be variously changed or modified by the skilled mechanic in adapting the invention to any particular installation or adaptation, but that all such changes are to be understood as within the scope of the following claim.

Vhat I claim is:

In combination, a pair of casings for hot gas circulation having at one end a hot gas inlet opening and a hot gas outlet opening respectively, a conduit connecting adjacent end portions of the casings, a fuel circulating coil in each casing having a connection extending through said conduit and provided with oppositely located inlet and outlet connections respectively extending through the casing, a series of alternating battle plates in each casing extending inwardly from opposite Walls thereof partly across and between adjacent coils of the fuel circulating coils in alternating sloping arrangement providing alternating hot gas passages, and a pump connected with the hot gas outlet opening.

In testimony whereof I hereunto aflix my signature.

ALBERT WILSON.

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