US1692186A - Gas burner - Google Patents

Description

v 1,692,186 G. F. REZNOR GAS BURNER Nov. 20, 1928.

Filed April 15, 1927 INVENTOR.

Q m flmfi ATTORNEYf-Q Patented Nov. 20, 1928.

UNITED STATES GEORGE FOSTER REZNOR, OF MERCER, PENNSYLVANIA.

GAS BURNER.

Application filed April 15, 1927.

My invention relates to burners and its purpose is to insure prompt and complete ignition across the full length of a gas burner. I have illustrated the invention-in connection with a radiant type of gas burner, but I do not limit it to that type.

When gas is first turned on in such a burner, the burner being cold and the gas and air mixture being set for normally cor rect operation, the velocity of the gas mixture issuing from the burner ports is such that the tendency to blow the fiame away from the burner is greater than the tendency or power of flame propagation through the mixture. Hence, it is difficult to light such a burner when cold, by the application of a match or similar means at a single point. It is theobject of this invention to insure prompt and complete ignition of the gas along all the burner ports.

Referring to the accompanying drawing, Fig. 1 is a side view of a burner to which my invention is applied, parts being broken away and in section; Fig. 2, a section on the line IIII of Fig. 1; and Fig. 3, a section showing a modification.

Referring first to Figs. 1 and 2, 1 represents a burner with the injection tube 2 and the mixer 3. When gas is admitted to the injection tube 2 through the gas inlet orifice 1, air for combustion is drawn into the in jection tube through the ports 5 which surround the orifice. It is found that at a point near the inlet end of the injection tube, a slightsuction rather than a pressure exists. Therefore, at this point a hole 6 is provided in one side of the tube through which the member or portion 7 of the operating rod 8 may be projected diametrically across the tube 2 directly in the path of the gas issuing from the orifice 4, which directs the gas along the axis of the tube 2.

The member 7 is normally held by the spring 9, with its free end in the hole 6 but not in the interior of the tube 2. The spring surrounds the member 7 and has one end seated against the side of the tube and the other end seated against the washer 10 which is held from outer movement by the vertical member 11 of the rod 8, which member 11 makes a right angle with the member 7. The rod 8 has the horizontal member 12 which makes a right angle with the member 11 and is joined by the vertical member 13 which extends down opposite to the front side of the tube 2, directly opposite the Serial No. 183,953.

member 7. The member 13 is connected to the forward or horizontal operating portion of the rod 8, which has the operating knob 14'. The member 13 is distant from the free end of the member 7 so that, when the spring is fine to act, the member 13 becomes a'stop against the front side of the tube. With the member 13 against the tube 2, as shown in F ig. 2, the member 7 has been withdrawn from the interior of the tube but has its free end in the hole 6.

W hen it is desired to light the burner the gas is admitted to the tube 2 through the orifice 4 in the usual manner. The knob 14 is immediately pulled, thus causing the memher 7 of the rod 8 to enter the injection tube 2 and lie directly across the path of the projection of gas from the orifice 4. The interposition of the member 7 across the path of the gas jet partly kills the velocity of the' gas in the tube 2; so that less air is drawn into the tube by the injector action of the gas. The volume of the gas is not sensibly reduced as the member 10 is small and interrupts the straight-line progression of the gas. Therefore, a richer mixture and a reduced velocity thereof are provided from the burner ports. The mixture is lighted at any point while the knob 14: is held outwardly, and the burner ignites promptly and along the full length thereof. The knob is then released and the spring 9 moves the rod 8 to its normal or idle position, allowing the normally correct mixture of gas and air to flow with normal velocity.

On Fig. 1, I show radiants 18 resting over raised portions 19 on the top of the burner. The construction of the top of the buner shown forms no part of this invention, but is the subject matter of my application Serial No. 165,311, filed February 2, 1927.

In F i9. 3, a bushing 15 is screwed into the hole 6 in the injection tube 2 the member 7 of the rod 8 passing through the hole. A spring 9 surrounds the'member 7 and has one end seated against the bushing and the other against the washer 10 held in position by the cotter pin 16 in the rod 8 having the knob 14:. The rod is held from escape from the bushing by the head 17 thereon which engages the inner end of the bushing. The head 17 prevents possible leakage of gas around the member 7 The operation of the rod 8 is apparent from the knowledge of the operation of the rod 8 of Figs. 1 and 2.

I claim* 7 1. In a burner, an injection tube, an inlet for projecting gas into the tube, an air inlet through Which air is drawn into the tube by the injector actionoi the gas, a red freely slidable longitudinally having one end arranged to be projected into the tube in the path of the jet of gas projected from the gas inlet, means for so projecting the end of the rod, means for automatically restoring the end of the rod to its initial position, and a shoulder carried by the rod and engageable with a fixed element to define the said initial position.

. 2. In a burner, an injection tube, an inlet for projecting gas into the tube, an air inlet through which air is drawn into the tube by the injector action of the gas, a rod having one end arranged to be projected into the tube in the path of the jet of gas projected from the inlet means for so projecting the end of the rod, means for automatically restoring the end of the rod to its initial position, a shoulder on the rod Within the tube, and a bushing in the tube, the end of the rod being: reciprocable in the bushing and the shoulder engaging the inner end of the bushing to limit the outward I'DOVGD'IQDt ot' the rod. v r

In testimony whereof, I hereunto affix my signature.

GEORGE FOSTER REZNOR.

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