US637887A - Heater. - Google Patents

Description

UNITED STATES PATENT OFFICE.

PETER FRANCIS MOOAFFREY, OF PITTSBURG, PENNSYLVANIA, ASSIGNOR,

BY DIRECT AND MESNE ASSIGNMENTS, TO THE UNION BURNER COM- PANY AND HENRY PURINTON, OF SAME PLACE, AND E. E. FREDERICK,

OF ALLEGHENY, PENNSYLVANIA.

HEATER.

SPECIFICATION forming part of Letters Patent N 0. 637,887, dated November 28, 1899.

Application filed July 1 5 1 89 8.

To all whom it may concern/.-

Be it known that I, PETER FRANCIS M cCAF- FREY, a citizen of the United States, residing at Pittsburg, in the county of Allegheny and State of Pennsylvania, have invented a new and useful Heater, of which the following is a specification.

My invention relates to water-heaters designed for domestic and analogous use; and the object in view is'to provide a simple, compact, and efficient heating device wherein water is employed as a medium, the parts being so disposed as to insure the prompt heating of the medium and preferably the raising thereof to the desired temperature as it passes through a continuous coil, forming one member of the heater.

Further objects and advantages of this invention will appear in the following description, and the novel features thereof will be particularly pointed out in the appended claim.

In the drawings, Figure l is a perspective View of a heater constructed in accordance with my invention. Fig. 2 is a vertical central section of the same. Fig. 3 is avertical sectiontaken in a plane perpendicular to that of Fig. 2. Fig. 4 is a detail sectional view of a portion of the heater, showing a slightlymodified cross-sectional construction of conveyer. Fig. 4 is a detail sectional view of the modified construction of conveyer shown in Fig. 4. Fig. 5 is an end view of the heating devices, showing a battery of coils, the casing being omitted.

Similar numerals of reference indicate corresponding parts in all the figures of the draw- 1ngs.

Arranged within a suitable casing 1, which may be provided in one side wall with a door 2 to give access to the interior, is a coiled retort or conveyer 3, supported upon a base 20 and consisting of a continuous tube having communication at one end with an inlet 4 and at the opposite end with an outlet 5, said outlet being suitably valved to control the flow of water.

The coil constituting the retort is preferably arranged in a vertical position, with all Serial No. 686,045. (No model.)

of the folds of the pipe in a common vertical plane, and upon opposite sides of the plane of the retort are arranged burners coextensive with the retort and having burner-openings spaced at small intervals throughout their surfaces. In an approved construction of the device the burners 6 consistof metallic boxes fixed to the base 20 and in communication with a gas-inlet 7, the front or inner walls of said boxes consisting of refractory plates 8, of asbestos or like material, said plates being parallel with and contiguous to the plane of the retort and having the above-mentioned burner openings or orifices, through which gas contained in the boxes of the burners may escape, said orifices being disposed to project the gas horizontally, whereby the flames strike the coil at opposite sides and rapidly heat the contained water. This heating operation occurs with sufficient rapidity in practice to heat Water to the desired temperature in passing from the inlet to the outlet, whereby with a moderate expenditure of fuel a continuous flow of heated water may be obtained.

In Fig. 1 I have shown a valve mechanism 9, which is common to the Water and gas inlets, and in practice it is preferable to employ a valve mechanism wherein the gas-inlet is controlled by the water-inlet and may be regulated to correspond in so far as the rapidity of admission of the fluids therethrough is concerned; but as the valve which I prefer to employ and which is indicated diagrammatically in Fig. 1 forms no part of my present invention I have deemed it unnecessary to further illustrate the same.

In Figs. 1 to 3 I have shown a retort constructed of cross-sectionally round tubing; but it is obvious that variations in this feature of construction may be made in orderto modify the extent of exposure of the tubesurfaces to the flames of the burners. For instance, in Figs. 4 and 4:? I have shown a portion of a conveyer constructed of flattened tubing, wherein the side surfaces which are exposed to the heat from the burners are increased to correspondingly diminish the horizontal depth of the conveyers or the distance between the opposite sides thereof. In this way the retort conveys the water in the form of a narrow ribbon or film, which is quickly heated by the means hereinbefore described in its passage from one end of the coil to the other. Also, it will be understood that when heaters of larger capacity are required the same facility of heating the water may be maintained with an increased capacity by duplicating the retorts or arranging them in a battery within a single casing, as indicated in Fig. 5. In this case the outer burners are constructed exactly as hereinbefore described be understood that two ormore fiat coils, such as those illustrated, may be employed, as one for each burner arranged side by side and close together, sothat each coil is exposed to the heat of both burners. The Water-heater herein described as being adapted to raise the temperature of the water as it passes through the continuous coil thereof may be connected in any desired manner with a continuous supply of water. Also, various other changes in the form, proportion, and the minor details of construction may be resorted to without departing from the spirit or sacrificing any of the ad vantages of this invention.

Having described my invention, what I claim is' In a water-heater, the combination with a base, of a retort fixed thereto, consisting of a continuous coiled tubular conveyer or waterpassage adapted for the continuous passage therethrough of the water to be heated, the convolutions of the coil lying in a single vertical plane, fiat-faced burners fixed to the base and arranged at opposite sides of and parallel with the retort, each burner con sisting of a metallic bog; having flanged side Walls, a refractory face-plate of asbestos se cured at its edges to the flanges of said walls and provided with burner-perforations adapted to discharge flame against opposite sides of the conveyer, and a casing inclosing the coil and burners and their base.

In testimony that I claim the foregoing as my own I have hereto affixed my signature in the presence of two witnesses.

PETER FRANCIS MOOAFFREY. Witnesses:

JOHN H. SIGGERS, FRANCES PEYTON SMITH.

Images