US1613293A - Oil-feed-control valve for oil-burning apparatus - Google Patents

Description

Jan. 4,1927. O 1,613,293

` C. A, REIF LT AL OIL FEED CONTROL VALVE FOR OIL BURNING APPARATUS Filed March 8, 1926 /N ver/v rows CHAR/.Es l?. Re?? ALLEN .HE/F

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I antan s Partant cranica@ CHARLES .AUGUSTUS REIJF AND ALLAN FRANK REIF, F BUFFALO, NEW' YORK..

@IL-FEED-UNTROL VALVE FOR OIL-BURNING APPARATUS,

Application tiled iMarelli 8, 1926'. y Serial No. 93,283.

@ur invention relates to improvements in oil feed control valves for *oil burning apparatus, and the object of the invention is to 'construct an electrically actuated valve for controlling the supply of oil to the burner. A further object of the invention is to provide means whereby the flow of oil is stopped at a plurality of points when the valve is closed, and a still further object is to provide means whereby oil is always contained in the conduit ofthe valve mechanism when the valve, is closed so .as to preclude any possibility of air pockets being formed which might tend to restrict' the ilow of oil when the valve is opened. Another object .of the invent-ion is to devise means in the lil valve whereby the passage of oil is cut off at one or more points before the valve is completely closed so asto'prevent any possibility of an oil How shouldthe valve through any unforeseen circumstances'not move to the limit ofthis closed position .when it is vintended to do so, and another object of the invention is to wire the electrically act-uatf ing as an electric motor operating the blower fan so that the actuation ofthe valve is in direct relation to the operation of the blower fan motor.

OurV invention consists of an oil feed control valve for oil burning apparatus constructed and arranged all 'as hereinafter more particularly described and illustrated -n the accompanying drawing in which:

Fig. 1 is a vertical sectional view taken through our valve,'the electrical actuating means therefor being diagrammatically shown.

Fig.` 2 is a reduced, elevational, diagram- `matic view of the valve, blower fan and oil burning mechanism, showingthe electrical connections between the valve and the blower fan motor, and, f "F ig. '3 is a fragmentary sectional view showinga portion of our valv'e plunger and casing therefor, the plunger being shown at a point before reaching the limit of its movement in closing the valve.

Like characters of reference indicate the corresponding parts in .the dierent views. `1 is the main portion of the valve casin being of substantially cylindrical form and containing a circular passage 2 which eX- `tends longitudinally therethrough, its lower end terminating in a valve seat 3 and 'communicating with a reduced longitudinal pasmeans for the valve in the' same circuit# duit 15 leading from yvided sage 4 which in turn communicates with a passage 5 of approximately the same diameter as the passage 2. The lower end'of the casing 1 constituting the passage 5 is exteriorly threaded and adapted to receive a screw joint 6 ofthe usual type for connect-ing the oil inlet pipe 7 which co1nmunicat es with the passage 5. r

Upper and lower branch pipes 8 and 9 extend outwardly from the casing 1 intermediately of its length and having their outer' ends exteriorly threaded for receive ing the joint nuts 1'0 and 11 of a U-shaped pipe 12 which constitutes a connection between the two branch' pipes 8 .and.9. '13 is a third branch pipe extending from the valve casing 1 and is positioned diametrically opposite the ybranch pipe'8, its outer end being suitably connected to an oil conduit 14 which extends to the combustion chamber, feeding oil thereto in the usual manner. If it is desired to always maintain an oil supplied pilot light in the burner when our valve-mechanism-is closed we provide a conthe passage 4 to the oil conduit 14, such conduit -15 is of course of a necessarily small bore so that quantity of oil is supplied.

Our valve consists of a circular plunger 16 slidably positioned inthe passage 2, a min- ;imum clearance being left between the plunger and wall of the passage so as to prevent-a low of oil therearound. The lower end of the plunger 16 is reduced to constitute a needle valve member 17 which is adapted to enter a valve seating 18 constituted` in the upper end ofthe passage 4, its lower tapered point 19 seating upon the tapered valve seat 20 when the plunger is in the closed position.

rlhe shoulder 21 constituted between the' plunger is also adaptneedle valve 17 and the ed to seat upon the valve seating 3 when the plunger is in its closed position.

'llhe upper end of the plunger 16 is adapt ed to project throughthe upper open end of the passage 2 in the casing 1 and is prowith an iron Aknob 22 the function of which will be hereinafter described. 23 is a diametrically positioned orifice extending through the plunger 16 intermediately of its length and adapted to register with the orifices in the oppositely positioned branch' pipes 8 and 13 when the plunger is in its uppermost position for permitting the passage of oil from the U-shaped pipe 12 to theh conduit My For preventing any rotative only a small movement of the plunger 16 which would permit the orice 23 going out of alignment with the branch pipes 8 and 13 we provlde the upwardly extending pins 24 upon the upper face of the valve casing 1- ,which are adapted to project intothe orifices 25' in the lower face ofthe knob 22, the pins freely sliding in\such orifices. For actuating the valve plunger'l we provide an electromagnet 26 which is suitably positioned above the iron knob 22 and adapted t0 lift the said kknob and plunger toopen. the'valve when the magnetis energized. Upon the electro-A magnet 26 being demagnetized through the. electric current being cut ofi' the weight of the knob 22 will be sutlicient to restore the plunger lto its lowermost or .closed posi-' tion.

' The operation of our valve is as`follows Upon reference to Figure 1 of the drawing 1t will be seen that the valve is in the open position, that is, there is aA direct communication for the oil from the oil supply pipe 7 through the passages 5, 4 and lower portion of the passage 2 which in turn communicates with the branch pipe 9, tl-shaped pipe 12 and branch pipe 8 leading back to the upper portion of the passage 2.1 As the plunger is in the uppermost position the diametrical orifice 23 therein is constituting a communication between the branch pipes `8 and 13 andvso permits the oil to flow to the oil conduit 14 leading to the combustion chamber of the burner. 'lo lift the plunger to this position the electromagnet 261s energized attracting'the knob 22 as before described. When the plunger 16 reaches its lowermost position the needle valve 17 will be seated in the valve seat 20 and the valve face constituted by the shoulder 21 between the plunger andthe needle valvewill be seated upon the valve seat 3; also the lower ortion of the plunger 16 and the oriee 23 in its upper end will have passed the entrances to the branch pipes 9 and 8 respectively thus cutting ottq the passage of oil from the entrance passage 5 to the oil conduit 14 at four distinct points andl thus reducing to a minimum vany possibility of leakage.

@n reference to Figure 3 it will be seen that the plun er ,1Q is shown before it reaches the limit of its downward movement in closing the valve and it willbe appreciated that at thepoint of travel shown although the needle valve has not been seated that'the passage of oil through the valve is cut off asthe entrance to the branch pi e 9 has been covered by the lower portion o the plunger 16 and the orifice 23 1n the plunger has moved away from the branch pipes 8 and 13. 1t wlllalso be` seen that by closing the entrance to the branch pipe 9 before the valve 17 is closed and the' oil supply cut of?l from the lower portion of the passage 2 that a meanshas been devised for insuring that the U-shaped pipe 12 is completely lled with oil as such oil therein is under pressure from the oilsupply tank, not shown, until the moment that the entrance to the branch Lpipe is completely closed. By this provi: sion any possibility of air pockets being formed in the valve conduits is obviated as even the orifice 23 in the plunger 16 has oil passing therethrough until the moment that 1t passes out of alignment with the branch pipes 8 and 13 and therefore is also full of oil when 1t 1s inthe inoperative position.

" When-the plunger lreaches its lowermost position in closing the valve the needle valve 17 and valve face 21 will be completely seated uponthe valve seats 20 and 3 respec' .tively thus constituting further closures against the passage of oil so that the valve plunger 16 makes closure at four points, viz, the needle valve 17 seated upon the valve seat 20, the valvefaoe21 seated upon the valve seat 3 and also the plunger itself clos- -ing the entrances Ito the branch pipes 9 and 13. #When it is desired to permit the oil to flow to the burner the magnet is energized attracting thel iron knob 22 andlifting the plunger 2 into the open position as before described. Upon reference to Figure 2 it will be seen that when the electric circuit actuating the motorl is cut oft" thatK the magnet will become immediately demagnetized permitting the knob 22 and plunger 2 to drop and closing the valve. When' it is desired to startthe burner it is merely necessary to switch on the electric current to start the blower fan motor when the electro-magnet 26 will become energized lifting the plunger 2 to the open position. By'providing the pilot light oil conduit 15 inthe oil passage 4 it will be seen, that a small quantity of oil will always be supplied for the pilot irrespective of Vwhether the Valve is closed or open.

From the above description it Iwill be apparent that we have devised an extremely simply constructed oil How.y control valve comprised of a minimum of parts which will lill@ lll@ seal. furthermore by constructing our device so that some of the closures/are' prior tol others We have devised means for preventi ing the oil draining out of the valve and air pockets being formed. By the provision of an electro-magnet for actuating the valve we have' constructed a mcchanismin which the operation'of the valve is directly dependent upon the operation of the blower fan motor so that the possibility of any waste or overflow of oil due to the stoppage of the air supply to the burner is obviated.-

What we, claim as our invention is 1. A Valve comprising a casing having a passageway with upper and lowern spaced iat apart orifices therein, a. fluid conduit chnnecting said orifices, a fluid outlet conduit extending from the passageway in thefvalve casing, a plunger reciprocal in the passage way and having an orifice extending therethrough, means for moving said plunger for uncovering the lower orifice to permit fluid passing between the passageway and the fluid conduit, and means whereby the orifice extending through the plunger is caused to register with the upper orifice and the fluid outlet conduit to permit the flow of fluid therethrough.

2. A valve comprising a casing having a passageway therein -and communicating with a second passageway, a valve seat constituted at the communicating point of the two passageways, a plunger' reciprocal in the Erst-mentioned passageway. and having an orifice extending therethrough, a fluid conduitleading from the lower portion of the first-mentioned passageway to its upper end, a fluid outlet conduit extending from said passageway, said orifice extending through the plunger constituting a connection between the two fluid conduits when the plunger1 is in its uppermost position uncovering the lower entrance tothe fluid conduit, and means, whereby the ldownward. movement of the plunger' closing the valve causes the orifice extending through the plunger to come out of alignment with the fluid conduits before the lower end of the plunger is seated upon the valve seat.

CHARLES AUGUSTUS REU?. ALLAN FRANK REMY

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