US1840840A - Fuel burner - Google Patents

Description

W. E. GOLDSBOROUGH FUEL BURNER Jan. 12, 1932.

Filed March 29, 1929 vwemko'c WI NDER E GOLDS BOROUGH Patented Jan. 12, 1932 uurrse STATES wrnnnn n. eotnsnonouen, or sour-s:

sa'raa'r orries nonwanx, oonnnc'rrour, assrunoa *ro- IDOHERTY RESEARCH COMPANY, QF NEVJYORK, N. Y; OQI'LPORATION OF DELA- Y wann FUEL BURN R Application filed March 29, 1929; Serial No. 350,959.

This invention relates to a fuel burner and more particularly to fuel burners adapted to function under high temperatures and pressures such as occur in connectlon with inter-- *nal" combustion engines or in other relations where fuel is burned under conditions which adversely afl'ect metallic parts of the burneri" It is among the objects of this invention to i provide a. fuel burner whichshall be of simcient in operation and ple, compact construction durable and which will have few elements liable to get out of order, and which may be easily taken apart for inspection and conditioning.

It is a further object of this invention to. provide for the protection of such metallic parts as are subjected to the high tempera ,tul'e of combustion in and adjacent the fuel burner. To this end, one feature of'the-invention contemplates the use for the inner elements of the burner of refractory material of such thickness as to fully protect the metallic housing of the burner and the fuel p position to the member 20 1s provided as insupply line connected therewith.

It is a further objectof this invention to provide for complete and efficient combustion ing the air a rotating motion over the surface of the fuel with the minimum quantity of air essential for its combustion. To this end means are provided whereby the fuel oughly mixed with the air of combustionat the point'at-which combustion occurs by givfrom which the fuel enters.

These and further obJects and features of the invention will be seen from the accompa nylng drawlngs, 1n wh1ch:-- 2 V I Flg. 1 1s a long tudinal section through the burner, parts being shown'in side elevation;

is thor Within the metallic sleeve 10 is a refractory core 20 which is provided with a central passage 22 extending longitudinally therethrough. The passage 22 has a conical por- 'tion 24 adapted to accommodate a conesh'aped deflector 26 having spiral deflecting vanes thereon as indicated at28. The refractoryport on 20 is made of hard, heat-resistant, non-porous material and is prefereiii ably formed: with a firm union to the metal sleeve by beingeither baked in place or cemented therein.

Adjacentthe refractory member is an annular member 30 also of refractory material but of such different composition from therefractory member 20 as to be permeable or porous although also possessing good heat resisting and non-conducting properties; The member 30 is provided with an annular groove 32 about its external circumference. A pipe 34 is adapted tolead liquid or'gaseous fuel to the annular groove 32.

A third refractory element of similar comdicated at 36 andis formed with the passage '88 centrally .therethr'ough adapted when in position to register withthe small end of a frusto-conical passage 40 in the refractory annulus 30. I

In. operation, air for combustion is supplied under high pressure at 22; At the small end of the frusto conical passage 24, it

is deflected by the vanes 28 of deflector 26 entering at the small end of the deflecting member 26 is in no way impaired by alteration in the cross-section of the passage through which the air flows. The air is however given ahigh rotational velocity and enters the passage l0, through the porous mem ber 30 in such a manner as to traverse a large portion of the surface thereof. Fuel which'may be gaseous or liquid is Y supplied from the passage 34; to the annular I chamber 32 and passes through the porous refractory 30. Upon contacting with the air circulating about the surface of the passage 40 the fuel is i nited and burns, passing to the combustion chamber of the furnace or engine through'the passage 38 in refractory member 36.

The deflector 26 is also preferably constructed of refractory material. It will thus be seen that all metallic parts of the burner are protected by a thick coating of refractory from the high temperature of the combustion taking place within the burner and the conveyor pipe 4L2, or other chamber im mediately adjacent thereto which also has a refractory lining 44.

By the construction :shown, the burner may be easily. attached or removed from the furnace or combustion chamber and upon -removalthezelement or 36 may be taken out ,therebypermitting the'removal of the porous member for-cleaning or to-be substituted by new porous member.

Although there is herein described a specific embodiment of the invention, itwill be obvious ;to those skilledin the art that various modifications may be. made in the details of construction andzin the design .and the proportions of the :variousparts Without departingfronrthe invention herein set forth. 3 Having thuswdescribedthe invention, what is claimed as new is: r In a fuel. burner, a casing, a refractory on;the.interior ofs'aid casing forming a heat insulated :passage therethrough, means to supplycombustion supporting-gases at one end of saiclw.casi-ng,ymeansto supply fuel centrally of:saidcasingthrough a portion of saidrefractory, and means in said-passage togive the gases enteringthe same a rotating motion priorto' contactwith the fuel.

.7 2. In a fuel burner, aocasing, a refractory on the interior ofsaidcasing forming a heat insulated passage therethrough, means to supply combustion supporting gases .at one end of s'aidcasing, means to supply fuel centrally ofsaid casing through a portion of said refractory, and a refractory deflector in said passage to givethe gases-entering the same a rotating motion prior to contactwith the fuel. 3. A fuel burner lncluding a casing, a lin- "ingin saie casing having a central section of permeable refractory material, outer sectlons of non-porous refractory materlal, and meansto supply fuel to sald burner through said permeable section.

i. A fuel burner including a metallic casing, a lining in said casing formed of two di'fierentheat insulating refractories, one of said refractories-being impermeable and the other being permeable, and means to supply fuel to said burner through said permeable refractory.

I 5.1'A fuelburner including ametallic casing open ateachend, a heat insulating refractory coating on the interior wall of said casing forming a heat insulated passage of varying cross section, means to force a combustion supporting gas through said passage, and means to supply fuel to said gas through said refractory material.

6. A fuel burner having a passage longitudinally therethrough, said passage including two frusto-conical portions With the large ends abutting, means to supply a combustion supporting medium to the small end of one of said frusto-conical portions, and means to supply fuel to the surface of the other ofsaidfrusto-conical portions.

7. A fuel burner having a passage longitudinally therethrough, said passage includ ing two frusto-conical portions With the lar e ends abutting, means tosupply a comber of permeable refractory material having a frusto-conical passage therethrough, said members being placed so that the large ends of said frusto-conical passages register, means to supply combustion supporting me- -CllU H'l to the small end of the frusto-conical passage insaid impervious refractory memher, and means to supply. fuel through the permeable-refractory material to the surface of the frusto-conical passage therethrough.

9. A fuel burner including a refractory body of heat insulating material, arportion of which is impermeable and a portion of 1 which is permeable, a passage .therethrough, and means to supply fuel to said-passage through said permeable portion.

10. A fuel burner including a refractory body of heat insulating material, a portion of which is permeable, a passage therethrough, and means to supply fuel to said passage through said permeable portion and a non-metallic refractory deflecting means in said passage.

11., A fuel burner including a passage through a refractory body of heat insulating material, the ends of sa1d passage being through impermeable refractory and the central portion through permeable refractory.

12. A fuel burner including a passage of gradually increasing cross sectional area, and a deflector therein having helical vanes thereon forming-grooves of constant cross sectional area.

13. A fuel burner including a passage of graduallysincreasingcross sectional area, and

deflecting means therein adapted tomaintain the effective crosssectional: area. of the "passage constant.

14. In a fuelburner, a casing; a=heat in- WINDER E. GOLDSBOROUGH.

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