US923976A - Furnace. - Google Patents

Description

P. V.-KNAUSS.

FURNACE. urmonnoiw rum) Nov. 16, 1908.

923,976. Patented June 8,1909.

FRANK V. KNAUSS, OF PORTSMOUTH, OHIO.

FURNACE Specification of Letters Patent.

Application filed November 16, 1908.

Patented June 8, 1909.

Serial No. 462,833.

To all whom it may concern:

Be it known that I, FRANK V. KNAUss, a citizen of the United States, residing at Portsmouth, in the county of Scioto and State of Ohio, have invented certain new and useful Improvements in Furnaces, of which the following is a specification.

My invention relates to an improvement in furnaces, primarily for hot-air systems.

The object of the invention is to provide a chamber interposed between the pipe and the outlet of the combustion chamber which shall be in contact with the air space and which shall expose a substantially large radiating surface, whereby the products of combustion in escaping are utilized at the top of the air jacket, thereby giving added efficiency to the furnace.

The features of the invention are more fully set forth in the description of the accompanying drawings, forming a part of this specification, in which Figure 1 is an elevation of a furnace with the casing cut away to illustrate the interior. Fig. 2 is a central vertical section of the flue dome. Fig. 8 is an enlarged plan View of the lower section of the same. Fig. 4 is an enlarged detail sectional view, illustrating the manner of connecting the two sections forming the flue dome.

1 represents the outer shell within which is the combustion chamber 2, forming between them the compartments 8, in which the air to be heated is exposed to the radiating surfaces of the combustion chamber.

4 represents the outlet of the combustion chamber for the products of combustion.

My attachment preferably consists of two shells 5, 6, forming an annular shell. The under side is provided with the flange 7, fitting the outlet 4. This shell is substantially of the diameter of the combustion chamber and has the curved formation constituting the most efiicient form of radiating surface. 8 to which the flue pipe 11 is attached, extending through the jacket 1. The upper surface of the shell is convex on the interior and constitutes a deflecting surface 14, adapted to throw the products of combustion radially outward toward the walls of the shell.

The sections 5, 6, are provided respectively with segmental walls 9, 10, which together form a segmental partition interposed between the interior of the shell and This shell has a lateral outlet neck the outlet 8. This segmental partition is substantially alined with the adjacent portion of the outlet 4, and this formation provides an outlet upon opposite sides of this partition, so that the products of combustion may escape into the neck 8 by following a path conforming to the periphery of the shell. In operation the products of combustion pass into this shell and are prevented from directly escaping, because of the partitions 9, 10, and striking the deflecting surface 14 are thrown out to the periphery of the shell, moving along the periphery thereof, imparting their heat units thereto, until finally passing around the ends of the partition they escape through the outlet 8. The products of combustion are thus maintained in the system without in any wise effecting the efficiency of the draft and they impart heat units to a supplemental heater having a substantial radiating area at the top of the air jacket. This device adds materially to the efficiency of the furnace, makes a convenient attachment, allowing the joining of pipe and damper outside of the casing, the neck 8 may be turned radially at any angle on the furnace, and at the same time is substantially simple and inexpensive.

Having described my invention, I claim:

In combination with a combustion chamber and jacket of a furnace, forming an air space between them, a relatively restricted outlet from the combustion chamber, a supplemental heating chamber of relatively larger diameter communicating with said outlet and occupying a position at the top of the air jacket and exposing a substantial radiating surface, a lateral outlet from the supplemental chamber, and a segmental partition in the chamber alined with the combustion chamber outlet vertically and laterally adjacent the outlet from the supplemental chamber, the top of said chamber having a convex surface, adapted to deflect radially the products of combustion, whereby the products of combustion are prevented from direct escape and are utilized in heating a supplemental radiating area at the top of the air jacket, substantially as described.

In testimony whereof, I have hereunto set my hand.

FRANK V. KNAUSS. Witnesses:

FLOYD L. SMITH, HENRY Soor'r, Jr.

Images