US1986020A - Oil burner - Google Patents

Description

Jam l 1935- B.'E. sHAw ET AL 1,936,020

o IL BURNER Filed Aug. 23, 1933 5 Sheets-Sheet l l2 4/ ,1h/g .H4 g .Z.-

Jan. 1, 1935. B, E. SHAW ET Al. 1,986,020

OIL BURNER Filed Aug. 23, 1933 5 Sheets-Sheet 2 I'NvnNToRs v .Eukra/v E. SHAWr Jan. 1, 1935. B. E. sHAw E1- AL OIL BURNER` Filed Aug. 23, 1933 3 Sheets-Sheet 3 ATII'ORNEYS Patented Jan. ll, 1935 OFFICE OIL BURNER Burton E. Shaw, Southwick, and Warren H; De Lancey, Springfield, Mass., assignors to Gilbert da Barker Manufacturing Company, West Springfield, Mass., setts a wllwration of Massachu- Application August 23, 1933, Serial No. 686,446

l Claim.

, 'I'his invention relates to improvements in oil burners and has to do, more particularly, -with a means for mounting and supporting the burner and its associated apparatus in operative positions with relation to a heater. l

The invention is especially adapted to the needs of an oil burner of the combustion tube type, or anyother type having an oil groove, which needs to be level and also adjusted with close accuracy as to height kwith reference to the'level of oil in a constant level `fuel supply reservoir. The invention is also designed to simplify and facilitate the work of installation of the burner and enable it to be done quickly and properly, even by relatively unskilled workmen. It provides also a supporting means for a burner and associated 4 apparatus which means is readily adaptable `to meet the varying conditions ferent heaters.

One object of the invention is to provide a supporting frame with provisions for levelling it, such frame carrying at one end the burner and at the other` end a constant level supply reservoir, characterized in that the burner is supported at the proper elevation with respect to said reservoir and level with respect thereto, so that all the workman needs to do is to level the frame to insure that the constant level source vof supply and the burner will be level and in proper relative locations with respect to height.

Another object of the invention is to provide a supporting frame, comprising end members, one for the burner and the other for the constantlevel fuel supply reservoir, with interconnecting encountered in diff Vmeans which are longitudinally adjustable relatively to at least one of such members, whereby the spacing between the burner and said reservoirv may conveniently be varied.

. Another object of the invention is to provide in a device of the class described, means on the supporting frame on which the burner is supported in a manner enabling it to be removed and replaced at will and yet preventingany pos'- sibility of replacing the burner incorrectly.

Another object of the invention is to provide on l one of the end members of the supporting frame all the apparatus which is related to the fuel feed for the burner, and to permanently x such parts in position along with the connecting piping. whereby the installing workman simply has to connect a pipe from supply tank to the said apparatus and a pipe'ffrom such apparatus to the burner.

Another object vis to provide, in association with` the arrangement just described, a manifold on said end member, said manifold including a fuel feed passagesfor connection, to theburner and a regulating valve to 'govern the rate thereto.- v

Another object ofthe invention is to provide in a burnerof the type described, combustion tubes, each of which is subdivided into a plurality of vertical sections' to enable the tube sections` of feed of fuel l to be inserted section by section through the nre box door of the heater and assembled inside the fire box in stacked relation.

Other objects will appear as the detailed description proceeds and will be pointed out in the appended claim.

The invention will be disclosed with reference` Vto the accompanying drawingsfin which,-

it appears with the burner -and the control apparatus removed;

Fig. '6 is a fragmentary cross sectional view taken on the line 6--6 of Fig. 5; y Fig. 'I is a vcross sectional view taken on the line 7 7 of Fig. 6; and

Fig. 8 is an end view of in Fig. 6.

Referring to these drawings; the invention proone of the valves shown -vides a supporting frame, of novel form, adapted to bef-disposedfin ypartfinside and in part' outside. the boiler or other form of heater and adapted t. to support boththe burner unit and the control apparatus for such unit. kThis frame, as best shown in Fig. 5, includes two end members 10 and 11 and a pair of tie rods 12 or their equivalents, for interconnecting the.. end members and enabling them'to be adjusted-toward or away from one another, as desired. As shown,` the tie rods 12 are round rods and tliey extend horizontally in spaced parallel relation, Each rod atone end is suitably fixed, as by a pin 13 (Fig. 4) to mem-V ber 16 and near the other end is adjustably secured, as by the set screws 14, to each of two hubs 15, fixed to and depending from memberll. By

loosening screws 14, member 11 maybe slid alongrods 12 and moved closer to or farther away from member 10.-

The frame, thus described, is supported at these points by adjustable standards. One of those standards is connected to member l1 at the forward central portion thereof (Fig. 2) and the others are connected one to each of two opposite sides of member 10 (Fig. 4). The last named and outer standards each include a screw threaded rod. 416 having suitably fixed to its lower end, a suitable base iiange or foot piece 17. The rod passes freely through the member 10 or 11, as the case may be, and such member is clamped thereto by and between a pair of nuts 18 on the rod in a manner which enables vertical adjustment of such member. The inner standard, marked 16 is of generally similar form except for its connection to its foot piece 17, which as shown in Fig. 2, is such as to enable the foot piece to rock in the standard. The standard 16 ts loosely in a hole in the foot piece and has a rounded lower end 19 resting on the bottom of the hole. The standard 16' is circumferentially grooved, as at 20, and a pin 21, passing through the foot piece enters the groove 20 sufficiently to hold the foot piece from sliding off the standard, leaving sufcient freedom however for the rocking action.

The member 10 is equipped with two levels 22 and 23 (Fig. 5) mounted in a case 24 and disposed longitudinally and transversely respectively of the frame. The frame, as shown in Fig. l, extends through the wall of the boiler B or other heater (in this case the ash pit door d) and the member 11 and standard 16' is located entirely inside the boiler. The rocking base piece 17 will conform to the slope of the ash pit floor and also will allow the standard to move freely when the frame is levelled up. The levelling ofthe frame is accomplished entirely from outside the burner by adjusting the two outer standards 16 until the levels 22 and 23 show it to be properly positioned.

The member 11, as shown in Figs. 1 and 2, supports the burner unit. For this purpose four rods (three of which are marked 26 and the other 26') are mounted in upstanding relation, one near each of the four corners of the square-shaped member 11. The rod 26 is of larger diameter than rods 26. All four rods are screw-threaded into member 11 and thus are vertically adjustable relatively thereto. Each rod is equipped with a lock nut 27, whereby it may be held to its member in various positions ofvvertical adjustment. TheA burner base 28 has four sockets, three of which are marked 29 and the other 29'. These sockets receive the upper ends of these rods in such a way that the burner can be readily lifted free of them whenever desired. The socket 29' is of larger diameter than the others and made to slidably` fit the larger rod 26', whereby the burner base if removed can only be replaced in the proper way. The several rods' 26 and 26', after having once been adjusted so that the burner base 28 lies parallel with and at the desired vertical' 28 has one or more endless fuel grooves which need to be levelled. As shown. the burner base has one such groove 31 to which liquid fuel is supplied, as by the pipe 32, and in this groove there is the customary lighting wick 33. The

planned mode of operation is to maintain continuously a re in the combustion chamber 34 which overlies groove 31. The other grooves 35 are supplied with vaporizing fuel by conduits 36 from vaporizing chambers 37 contained in housings 38 depending from base 28. These chambers are supplied with oil intermittently, whenever there is a demand for heat from the heater B, and the oil supplied is vaporized from the heat derived from the burner base, the constant fire in chamber 34 keeping the walls of the vaporizing chambers 37 warm. The burner has perforated combustion tubes 39 one pair for each groove 35 or 31, as the case may be, each pair affording between them a combustion chamber to which air passes through the perforations in the tubes. A'ir flows upwardly through spaces 40 between adjacent grooves, and through the annular spaces 41 between adjacent tubes. A cover 43 caps the several tubes 39 and has outlets 43 overlying each combustion chamber,this cover serving to close off the annularv air chambers 41.

'I'he burner, herein shown, is of the type disclosed in the copending application of Donald C. Elliot and Warren H. De Lancey, Serial No. 685,682 led August 18, 1933. It differs in this respect,-that each combustion tube 39 is made in two separate sections-the upper section 39 having a flange 44 which telescopes over the lower section 39. The burner, shown herein, is exceptionally large, being used for general heating purposes rather than, as usually heretofore, for kitchen ranges and small stoves. It needs to be not only large in diameter but its combustion tubes are exceptionally high, so much so that they would not, unless split in two sections as shown, pass through the fire box door f, shown in part in Fig. 1. With the construction illustrated. the burner can easily be removed, section by section, through door f. One reaclfesin through this door and removes the cover 42, theupper tube sections 39', then the lower sections 39 and nally the burner base 38,-the oil pipe connections having first been detached.

The member 10 carries such apparatus as is necessary to control the fuel feed to the burner and it also carries a manifold 45, which is secured thereto by the cap screws 46 and to which the l burner is piped as shown in Fig. 5. The low fire supply pipe 32 is connected by a flexible pipe 47, such for example as copper tubing, to the manifold 45. Each vaporizing chamber 37 is connected by a pipe 48 to a T 49 from which a similar flexible pipe 50 leads to the manifold 45. This manifold,`.as shown in Fig. 6, has two separate horizontal passages 51 and 52 to which fuel is supplied, in a manner later to be described, by pipes 53 and 54, respectively. These pipes lead into the'top of themanifold and connect with the outer and larger parts of their respective passages 51 and 52. The inner and smaller parts of such passages communicate with pipes 50 and 47, respectively. Vent pipes 55 and 56. connected to the top of the manifold and communicating with the` inner ends of passages. 51 and 52, respectively, extend upwardly (see Fig. 4) to a point above Ithe maximum oil level in the system andterminate with downturned ends. A regulating valve 57, comprising a cylindrical rod, the inner end of f'which is rotatably received in the small end of passage 51, has in its periphery at the inner end thereof a longitudinally-disposed groove 58 of V-shaped cross section. This groove is of maximum depth at the inner end of the rod and gradually decreases in depth as it extends end of passage 51.

-vapors in these grooves may be ignited in any outwardly. 'I'he outer end of the rod is screwthreaded 'into a bushing 59, which closes the outer By threading the rod in or out in its bushing 59, its inner end may be moved further into or out of the small end of passage 51 and the effective area of communication between the two ends pf this passage varied as desired. A lock nut 60 is provided on the threaded end of valve rod 57 to hold it in adjusted position. This nut, and the outer end of rod 57, are normally concealed by a cap nut 61, threaded onto one end of the manifold. A similar valve rod 62 is provided in the passage 52 and its outer end is concealed by a cap nut 63, threaded onto the other end of the manifold. The valves 57 and 62 enable the rate of flow of oil to the vaporizing lchambers 37 and to the low-fire groove 31 to be varied as desired.

The other control devices are also carried by the member 10. Such devices are standard articles available on the market. Since they are well known to those skilled in the art and since they do not of themselves form essential parts of the present invention, a detailed description and illustration of them has been deemed unnecessary. It will suffice to state that oil from a suitable source enters through a pipe 64 into a filter 65 and from the latter passes by wayof a pipe 66 into the base o f a float. chamber contained within the casing 67 and constituting the constant level supply reservoir. The inflow of oil into casing 67 is controlled in the well known way by a suitable float operated valve so that casing 67 is normally maintained filled with oil up to a predetermined level. Should oil rise in the casing above this level it will overflow through a pipe 68 into a bucket 69, suspended by a link 70 from a lever 71. The weight of oil in the bucket will lower lever 71 and close the float operated valve. A guard 72, encompasses the bucket and is hung from trunnions 73, provided on a bracket 74, screwed to the top of casing 67. The casing itself is supported by posts 75 from a plate 75' secured to member 10. Oil leaves the casing 67 and enters the top of a T 76, The pipe 54, which supplies oil to the low-fire groove 31 connects to the bottom of this T. The'side outlet of the T 76 is connected by a pipe 77 to a solenoid valve 78 and from the valve oil flows to a T 79 to the 'lower end of which pipe 53 is connected. A vent pipe 80, similar to pipes 55 and 56, is connected tothe top of T 79. The electrical connections to the solenoid are indicated at 81. It will be understood that the solenoid may be actuated in any suitable way, when there is a demand for heat, to cause its valve to open and admit oil to the vaporizing chambers 37 to be vaporized therein and the resultant vapor fed to grooves 35 to supply the high re. It is usual to provide a regulating valve to control the outlet of casing 67 and such a valve is indicated conventionally at 82. The lter 65, iloat regulator 67, overflow bucket 69 and solenoid valve 78 are preferably enclosed within a hood 83, secured to plate 75'. This hood preferably has Ventilating louvers'84 (Fig. l).

The operation of the burner need be but briefly described. Oil is supplied continuously to groove 31 to maintain the base 28 warm so that when oil is admitted to chambers 37, it will be readily vaporized. Whenever there .is a demand for heat, the solenoid valve 78 is automatically 'opened and oil flows to chambers 37. Here the oil is vaporized. 'I'he resulting vapor rises into the cross conduits y36 and is distributed to the grooves 35`through the several vertical ports indicated in Fig. 2. The

suitable way. Usually the vapors are ignited from the fire in groove 31 by means of a cross passage,

indicated in Fig. 2 at 85, which interconnects'the several grooves 35 and connects the innermost groove 35 to groove 31, as disclosed in full in said copending application. Briey, the vapor fills this cross passage and ows into the groove 31, where it is ignited from the re therein. Then the ignited vapor flashes back in the passage and successively ignites the vapor in the several grooves 35. When the burnen has produced enough heat, valve 78 automatically closes and prevents further flow of oil to chambers 37. Consequently, vafter the oil therein has been vaporized, combustion ceases in grooves 35.

The invention ail'ords a supporting frame for the burner and its constant level fuel supply reservoir 67 and a convenient means for levelling the same from an easily accessible location outside the burner. It will be understood that the posts 26 and 26' are adjusted at the factory so that the bottoms of the grooves 31 and 35 lie parallel with a plane passing through rods 12 and so that the burner base lies at the desired height above said rods. This adjustment as to height, properly speaking, is made with reference to the oil level in casing 67 and the purpose of the adjustmentas to height is to secure the proper level of oil in the burner, as in groove 31. Once these adjustments are made, they are fixed by the pins 30. Then the installation man sets the burner Vat the right height with reference to the heater B by using the levelling screws 16 and 16'. Having adjusted the inner screw 16 ,to the desired height and locked it in position, he then levels up the supporting frame by the use of screws 16, and with reference to the levels 22 and 23.

'Ihe installation of the burner may be easily accomplished in -the following manner. 'I'he member 11 is removed from rods 12 and placed inside the heater through the fire box door f. Then the rods 12 are slid in through holes in the ash pit door d, or through holes made inthe side-wall of the heater at some other location, and connected to member 11. The rods may be moved longitudinally in or out in bearings 15 to get the control apparatus, which is carried by member 10, at the desired distance from the heater B.

Then the set screws 14 are tightened to x the rods to member 11. It will be obvious that this longitudinal adjustment might alternatively be made from outside the heater at the member 10. Having the support placed in position, it is levelled, as above described. 'I'hen the assembly of the burner proceeds. The operator inserts base 28 through the fire box door f and places it on posts 26 and 26'. When set in place on these posts, the base 28 is in the proper angular location and at the proper height with reference to the level of the oil supply and the bottom of groove 31 is level. All this is insured 'without the necessit of any adjustments being made by the inst ing workman. The pipes 47 and 50 are then connected. After this has been done, the'workman sets 'the lower sections 39 of the combustion tubes in place on base 28, inserting such sections through door f. Then the upper sections 39 .are inserted through this door and set in place on the lower sections, after which cover 42 is applied and the installation is completed..

One advantage of the supporting frame lies in vt-he fact that it may be installed in any heater without requiring extensive changes therein. All

CLI

that is necessary in the case of a coal burningv ferred not to have the control apparatus in frontl of door d or to block the same so that it cannot be opened. This can be easily done with the supporting frame of this invention, since the four drilled holes may be formed in the side wall of the heater just as easily as in the door d. Then this door is left free to be opened whenever desired. It is an advantage to use the door to get access to the burner support, both for connecting rods 12 to member 10 and for connecting the oilK piping.

Thus the invention provides a very desirable supporting means for a burner of the combustion tube type and its constant level supply reservoir (and other control apparatus if desired), which means is designed to` facilitate the work of installation and enable a neat workmanlike job to be done even by the'relatively unskilled.l

Little is left for the installing workman to do. He simply has to adjust the support for height,

cut the holes in the heater for rods 12 and the oil pipes 47 and 50, level up the support, connect the oil pipes and then assemble the burner piece by piece. He does not have to set the burner base with reference to the constant level supply reservoir or level the burner grooves. His work is reduced to a minimum and what work he has to do is of simple character, easily performed even by relatively unskilled workmen.

The invention has been disclosed herein, in an embodiment at present preferred, for illustrative purposes but the scope of the invention is dened by the appended claim rather than by the foregoing description.

We claim:

In combination, a substantially horizontally disposed supporting frame comprising two end members disposed in longitudinally-spaced relation and two longitudinally-disposed and transversely spaced connecting members connected to at least one of said members in a manner toenable adjustment of the longitudinal spacing of said members, a burner carried by one end member, and control apparatus for the burner carrled by the other end member.

BURTON E. SHAW. WARREN H. DE LANCEY.

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