US1003968A - Furnace for perfecting combustion. - Google Patents

Description

G MEYER FURNACE FOR PERFEOTING COMBUSTION. APPLICATION FILED MAB-.1, 1910. RENEWED FEB. 6, 1911. 1,003,9 Patented Sept. 19,1911.

. J. PAUL, J. H. LYNCH & J.

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UNITED STATES PATENT QFFICE.

WILLIAM J. PAUL, JOHN H. LYNCH, AND JAMES G. MEYER, 0F MATTEAWAN, NEW

YORK.

FURNACE FOB PERFECTING COMBUSTION.

Specification of Letters Patent.

Patented Sept. 19, 1911.

Application filed March 1, 1910, Serial No. 546,717. Renewed February 6, 1911. Serial No. 606,863.

To all whom it may concern:

Be it known that We, \VILLIAM J. PAUL,

- JOHN H. LYNCH, and JAMES G. MEYER, all

citizens of the United States, residing at Matteawan, in the county of Dutchess and State of New York, have invented new and useful Improvements in Furnaces for Pertypes of furnaces and ovens, but is here own as applied to a return tubular boiler furnace.

The invention consists in directing the products of primary combustion from the furnace through a series of continuous, unbroken, unobstructed combustion and heat radiating tubes, flues or like passages, preferably arranged longitudinally, which tubes or flues receive the products of primary combustion, confine them within their area throughout their entire length, bringing the gases into intimate relation and maintaining such intimate relation throughout the entire length and area of the tubes or flues; the

said gases,so confined, are ignited by the heat from the furnace, the combustion produced thereby heats the tubes or flues to a high temperature, thereby producing oombustion within the area of the said tubes or flues and throughout their entire length, highly heating the gases from the furnace passing into them, burning the same, thereby consuming the inflammable gases, and since the body to be heated is exposed, the highly heated incandescent tubes or flues give ofi' their radiant heat to said exposed body.

The construction of the improved furnace will be fully described hereinafterin connection with the accompanyin drawings which form apart of this. specification, and its features of novelty will be set forth and defined in the appended claims.

In the drawings: Figure 1 is a view in perspective, partly broken away, of a return tubular boiler furnace, embodying the invention. Fig. 2 is a longitudinal section of the same. Fig. 3 is a transverse section on the line 33 of Fig. 2.

The reference numeral 1 designates a boiler supported in the usual manner by the furnace walls above the grate 2, and the bridge-wall, 3. On the bridge-wall, 3, within the space usually termed combustion chamber and which in an ordinary furnace is an open, unobstructed space or chamber are located a series of combustion and heat radiating tubes 4 constructed of fire clay, or other suitable material. These tubes or flues are arranged as shown, longitudinally of the boiler and parallel thereto and directly within the line of draft from the fire-box. The gases from the furnace thus pass into a series of continuous, unbroken, unobstructed tubes, flues or like passages, which tubes or flues receive the said gases, confine them within their area throughout their entire length, bringing the gases into intimate relation and maintaining such intimate rela tion throughout the entire length and area of the tubes or flues; the said gases being so confined and ignited by the heat from the furnace, the combustion produced thereby heats the tubes or flues to a high temperature throughout their entire length, hlghly heating the gases from the furnace passing into them, and thus heating of the tubes or flues results in the conversion of all inflammable gases and substances into heat units of high value, and such increased or intensified heat then passes into the boiler tubes.

Our experiments have demonstrated that the combustion of all gases and vapors, within the incandescent tubes, renders the discharge from the furnace stack smokeless, only non-inflammable vapors remaining after the passage of the furnace gases into the tubes.

\Ve desire it to be understood that one of the important features of our invention resides in the fact, that the tubes or flues 1, serve both as combustion and heat radiating tubes or flues, hence the body to be heated being exposed, said body is subjected to the radiant heat therefrom, and the tubes or flues are of such'length as to insure substantially complete combustion Within the area thereof.

While it is not desired toconfine the invention to any specific means for supporting the tubes, or to any special form of tubes or longitudinal passages, the tubes and sup ports therefor, shown in the drawings, have been found practicable for efiicient service for boiler furnaces. The polygonal outer surfaces of the tubes, shown in the drawings, give an extended area of radiation, and the supports 5 of fire brick are formed with openings through which the tubes extend. This manner of supporting the tubes permits of their ready insertion and removal when necessary, but any form of tube or flue will perform the same service. The supports for the tubes, as shown in the drawing, are shown as resting upon the bottom of the combustion chamber.

The entire volume of gases from the furnace pass into the series of incandescent tubes or fines thereby converting the furnace gases into a fixed gas of high heat value which is immediately distributed through the combustion chamber and the boiler tubes, retaining its high heat value throughout the distribution over the radiating surfaces and passing to the stack.

In describing the tubes or flues 4 as continuous, unbroken, and unobstructed, we wish it to be understood that there are no openings of any kind or nature in the said tubes, except the opening at either end of the tubesthrough which the said gases leave the said tubes or fiues, and that the gases passing thereinto have an unobstructed passage therethrough and are not permitted to expand through any holes or openings in the surface of the said tubes or fines during their passage through the said tubes or fines, and'it is this feature of the invention that produces the desired results, as an expansion of the gases, except in the manner above set forth, necessarily results in the lowering of the flame temperature, a result which the present construction avoids.

It will be perceived that the tubes or lines at are imperforate; that they do not com municate one with another; further, it will be seen that these tubes or lines are of the same cross-sectional area throughout their length and through which the gases must freely flow.

Having thus described our invention what we desire to secure by Letters Patent and claim is l. A furnace or oven comprising, a firechamber, a bank of spaced combustion and heat radiating tub-es, disposed within the line of draft and in free communication with the said chamber, means for supporting said tubes without materially affecting the temperature or the radiating surfaces thereof, and a body to be heated exposed to the radiant heat from said tubes, whereby said tubes may be maintained at a high temperature and the said body heated by radiation.

2. A furnace or oven comprising, a firechamber, a bank of spaced combustion and heat radiating tubes, disposed wit-11in the line of draft and in free communication with the said chamber, the tubes being of such length as to insure substantially complete combustion within the area thereof, means for supporting said tubes without materially affecting the temperature or the radiating surfaces thereof, and a body to be heated exposed to the radiant heat from said tubes, whereby said tubes may be maintained at a high temperature and the said body heated by radiation.

3. A furnace or oven comprising, a firechamber, a bank of spaced combustion and heat radiating tubes, disposed within the line of draft and in free communication with the said chamber, the tubes being of such length as .to insure substantially com plete combustion within the area thereof, means for supporting said tubes without materially affecting the temperature or the radiating surfaces thereof, and a body to be heated exposed to the radiant heat from said tubes, whereby said tubes may be maintained at a high temperature and the said body heated by radiation, said bank of tubes extending from the fire-chamber to a point at or near the rear end of the body to be heated.

4. A furnace or oven comprising, a firechamber, a bank of continuous, unobstructed, imperforate non-communicating combustion and heat radiating tubes, disposed within the line of draft and in free communication with the said chamber, the tubes being of such length as to insure substantially complete combustion within the area thereof, means for supporting said tubes without materially affecting the temperature or the radiating surfaces thereof, and a body to be heated exposed to the radiant heat from said tubes, whereby said tubes may be maintained at a high temperature and the said body heated by radiation.

' WILLIAM J. PAUL.

JOHN H. LYNCH. JAMES G. MEYER. In presence of JOHN H. LYNCH, Jr, WILLIAM G. CHRISTIE.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents,

. Washington, I). G.

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