US1911487A

US1911487A - Burner

Info

Publication number: US1911487A
Application number: US219046A
Authority: US
Inventors: Donald L Blatter
Original assignee: Erie City Iron Works
Current assignee: Erie City Iron Works
Priority date: 1927-09-12
Filing date: 1927-09-12
Publication date: 1933-05-30
Anticipated expiration: 1950-05-30

Description

May 30, 1933. D. L. BLATTER BURNER Filed Sept. 12, 1927 R. & m n m m L m w m .r j Z w I F B M 7

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2 m F U Patented May 30, 1933 UNITED STATES "PATENT OFFICE .DGNALD 1.. BLATTER, or ERIE, PENNSYLVANIA, Assreivon TOIERIE CITY more worms, 1

OF ERIE, PEITNSYLVANIA, A CORFOB'ATION OF PENNSYLVANIA BURNER Appi'oation filed September 12, 192-7. Serial No. 219,046.

In burning certain classes of fuel, such as pulverized coal, the fuel is usually delivered to the furnace, using air, commonly referred to as primary air, as the vehicle for delivery. It is usual to add to this prlmary air, auxiliary air or supplemental air, in quantities sufficient to complete combustion. Where the fuel is delivered in a single jet, or stream, the combustion can only be completed upon-the penetration of the air from the outer periphery of the stream to the center and as the stream is enlarged the completion of combustion is delayed. The present invention is designed to accelerate the combustion by dividing the delivery of fuel in a stream having diverging portions so that the combustion may be more rapidly completed. I further desire in such division to give to the air a certain amount of turbulence. Features and details of the invention will appear from the specification and claims. A preferred embodiment of the invention is illustrated in the accompanying drawing as follows Fig. 1 shows an end view of the burner. Fig. 2 a plan view of the burner as ordinarily installed.

Fig. 3 a section on the line 33 in Fig. 2. 1 marks the burner discharge passage or nozzle ordinarily formed in the end of the delivery pipe. This nozzle is elongated.

Deflector plates 2 are secured at their rear ends. That is to say, the ends opposite the direction of discharge. They are arranged on opposite sides of the burner nozzle in staggered or alternate relation, the deflector plates along one edge of the burner nozzle being spaced with relation to the deflector plates on the opposite edge of the nozzle and ordinarily adjusted so that the plates are in interlayed relation. These deflectors break the flow of fuel into the divergent streams,

the extent of the separation being dependent to a large degree on the adjustment of the deflector plates.

The deflector plates are formed with cooling passages 3 which are in the form of U- bends and the supporting ends of the deflectors are connected by pipe nipples 4, these 59 pipe nipples connecting with the passages 3. The various nipples are supported by left, as shown in Fig. 1. The other end of 1 the deflector system is conuectedby a nipple 12 with a discharge pipe 13. Through this system water is circulated through each deflector, the deflectors operating as a series, so that one supply and one discharge pipe take care of the whole system. The nipples also afford a means by which the deflectors may be swung to any angle that may be desired to spread the streams of fuel to conform to the furnace requirements. 1

Fuel is delivered through the main'pipe of the burner striking the deflector plates and is deflected forming a stream with diverging portions. Thus the exposed surfaces of the portions are increased over that of a stream without such diverging portions and the depth from the surfaces to the center of the streams decreased over that of a stream without such diverging portions. As a consequence the supplemental. air completes the combustion in a much shorter period than where the fuel is delivered in one stream. Thus the flame is materially shortened and permits of the use chamber.

While I have shownthe burner arranged horizontally it will be understood that this may be arranged from any point of delivery that may conform to the requirements of the particular furnace chamber, or conditions of delivery of fuel. 1 I i What I claim asnew is I 1. A burner comprising a nozzle adapted to discharge a stream of pulverized fuel and air, said nozzle having walls arranged at its discharge end to form an oblong outlet with the bounding edges of opposing walls thereof substantially parallel; and deflector plates mounted on each of said opposing edges, said I plates on each edge'being arranged with of a smaller furnace spaces therebetween, the width of which spaces is slightly greater than the width of the deflector plates, thedeflector plates on one edge being staggered with respect to those on the other and oppositely inclined to the path of the discharge from the nozzle to form a discharge stream with diverging portions.

2. A burner comprising a nozzle adapted to discharge a stream of pulverized fuel and air, said nozzle having walls arranged at its discharge end to form an oblong outlet with the bounding edges of the opposing walls thereof substantially parallel and deflector plates mounted for swinging adjustment on each of said edges, said deflector plates on each edge being arranged with spaces therebetween, the width of which spaces is slightly greater than the width of the deflector plates, the deflector plates on one edge being staggered with respect to those on the other and of such length that those on opposite edges can be swung into interleaved relations, in the path of discharge from the nozzle. I

3. A burner comprising a nozzle adapted to discharge a stream of pulverized fuel and air, said nozzle having walls arranged at its discharge end to form an oblong outlet with I the bounding edges of opposing walls thereof substantially parallel; and deflector plates mounted on each of said opposing edges, said plates on each edge being arranged with spaces therebetween, the width of which spaces is slightly greater than the'width of the deflector plates, the deflector plates on one edge being staggered with respect to those on the other and oppositely inclined to the path of the discharge from the nozzle to form a discharge stream with diverging portions,

7 livering air and fine fuel to the nozzle.

4. A burner comprising a nozzle adapted to discharge a stream of pulverized fuel and air, said nozzle having walls arranged at its discharge end to form an oblong outlet with the bounding edges of' the opposing walls thereof substantially parallel, and deflector plates mounted for swinging adjustment of each of said edges, said deflector plates on each edge being arranged with spaces therebetween, the width of which spaces is slightly greater than the width of the deflector plates, the deflector plates on one edge being staggered with respect to those on the other 7 and of such length that those on opposite edges can be swung into interleaved relations, in the path of discharge from the nozzle, in combination with means for delivering air and fine fuel to the nozzle.

In testimony whereof I'have hereunto set my hand. V

DONALD L. BLATTER.

in combination with means for de-. y