US2546409A - Vent means for oil-burning furnaces - Google Patents

Description

March 27, 1951 A. J. RITTER 2,545,409

VENT MEANS FOR OIL BURNING FURNACES Filed D80. 14, 1948 INVENTOR. ALDEN J. E/TTEIQ ye/21 5 A? Patented Mar. 27, 1951 VENT MEANS FOR OIL-BURNING FURNACES Alden J. Ritter, Elyria, Ohio, assignor to The C. A. Olsen Manufacturing Company, Elyria, Ohio, a corporation of Ohio Application December 14, 1948, Serial No. 65,170

1 1 Claim.

This invention relates to oil burning furnaces wherein the combustion chamber of the furnace is served b an atomizing burner which includes a primary air blower.

In such a furnace it is known as desirable to provide vent means for combustion chamber pressure relief and to permit influx of a small amount of secondary air, for prevention of noise upon starting the burner, by damping of the pulsation within the chamber.

The principal general object of this invention is to so relate such vent means with the inlet of the blower, that combustion chamber contents having egress through such vent means will be sucked into the blower inlet, and the space within which the furnace is located will, therefore, be purged of objectionable fumes.

Other objects of the invention are to so arrange the vent means and the blower inlet, that their presence as well as their described functional relation is inconspicuous.

Further objects and advantages will be apparent from the following description taken in connection with the accompanying drawing in which:

Fig. 1 is a view generally in side elevation showing pertinent parts of a furnace equipped with an oil burner, in an arrangement embodying the invention, parts being broken away to show details of construction, and

Fig. 2 is an enlarged perspective view illustrating location of vent openings in the furnace observation door frame appearing in Fig. 1.

With reference now to the drawings, the furnace rests upon a floor l and includes a body 2 enclosing the usual combustion chamber and housed within the usual jacket of which 3 indicates the front wall. A radiation shield 4 may be provided about the furnace body 2.

The furnace is provided with combustion chamber access and observation door means, and its combustion chamber is served by a burner, as generally indicated at A and B respectively; a panel or plate 3a being provided on the furnace wall 3 for mounting and interrelating such parts.

More particularly as to the door means A, it includes a flanged circular frame 5, mounted on the plate 3a, and extending forwardly therefrom for support of a door 8 mounted thereon as by hinging at 1. A tunnel connection 8 interconnects a suitable opening in the furnace wall with that of the frame 5.

Vent openings 9 are provided in the bottom portion of the frame 5, which thus are effective, by way of the connection 8 for admission of a slight amount of secondary air to the combustion chamber of the furnace.

As to the burner B, it is mounted on the plate 3a to serve the furnace combustion chamber by way of the tunnel Ill. The burner includes blower means having an impeller wheel I I within a housing l2, the latter being forwardly spaced from the plate 3a to. provide an air inlet space [3, so that operation of the burner by its usual motor M for driving the impeller I I, will eifect flow of primary combustion air into the furnace as indicated by the arrows in Fig. 1.

As will be appreciated by one familiar with the art, the burner B usually includes other parts such as fuel atomizing nozzle means within the tunnel l0, and ignition means therefor, forming no part of the present invention and, therefore, not herein illustrated.

The burner B is located directly beneath the door means A so that its effective air inlet opening, which is uppermost between the blower housing l2 and the plate 3a, is adjacent the bottom vent openings 9 in the overhanging collar 5.

Thus, any fumes having egress from the com-- bustion chamber of the furnace by way of the openings 9, will be sucked into the primary air stream produced by the blower means, as indicated by the feathered arrow in Fig. 1. Consequently, the space within which the furnace is located will be purged of such fumes, by their immediate return to the combustion chamber substantially without dissipation into such space.

What I claim is:

In a furnace including an upright panel, a combustion chamber behind said panel, and oil burner means for said cumbustion chamber and including blower means located in slightly spaced relation to the front of said panel with its air inlet opening leading from the space therebetween: observation door means for said combustion chamber including a door frame extending forwardly of said panel above and adjacent said space, and a door mounted on said frame at the forward extremity thereof, said frame having a vent opening located in its bottom portion between said panel and said door, whereby said openings are concealed, yet provide a direct and short path therebetween for return purge of vented combustion chamber contents.

ALDEN J. RITTER.-

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number Name Date 2,078,884 Volmer Apr. 27, 1937 2,140,088 MacDonald Dec. 13, 1938 2,240,161 Mueller Apr. 29, 1941 2,240,531 Walker May 6, 1941 2,245,586 Holmann June 17, 1941 2,262,525 De Lancey Nov. 11, 1941 2,329,272 Jorolemon Sept. 14, 1943 2,357,622 Wiser Sept. 5, 1944

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