Патент USA US2122227код для вставки
June 28, 1938. ' E, E_ GOEHLER 2,122,227 TANK FITTING Filed NOV; 4, 1956‘ [nz/c' nior Elmer/F QOehZer 2,122,223 Patented June 28, 1938 UHTED STATES PATENT OFFHQE 2,122,227 TANK FITTING Elmer E. Goehler, Portland, Oreg., assignor to Vortex Manufacturing Company, Portland, 0reg., a corporation of Oregon Application November 4, 1936, Serial No. 109,119 5 Claims. This invention relates to ?ttings for fuel oil tanks and especially to a unitary ?tting for a . Fig. III is a section taken on the line III-III of the indispensable oil ?lter used with such of Fig. I. In the drawing, the sections l and 2 respectively represent the top and bottom members of a fuel oil tank which may be circular or rectangular. 3 is a ?tting, preferably cast of metal that is provided with two independent connections 4 and 5, each forming a part of independent inner pas systems. sageways or ports such as do. and 5a. fuel oil tank such as is used for a domestic oil heating system. The objects of this invention are to overcome objections heretofore thought insurmountable, particularly with reference to frequent plugging Practically all systems now in use consist of a 10 fan for furnishing air to a burner, an isolated oil tank, an oil pump located on the same base with the fan, a metering oil atomizing device or nozzle and a mechanical ?lter of some chosen type so‘ that the invariable sediment, sludge and impuri ties of the cheap oil used will not plug the ex ceedingly small passageways in the atomizing de 1 (Cl. 220—85) vice. Since pressures requisite for atomization are 20 high, the pump must be of the positive displace ment type and since a positive displacement pump of just the capacity required is out of the ques tion, an overflow pipe between the pump and the atomizer is likewise always required. In these 25 systems all of the oil pumped is ?ltered, though a very large percentage of it returns to the tank through the over?ow pipe, usually keeping the tank agitated so that the sludge does not all settle to the bottom as it should but is kept mixed with the tank contents. The principal object of my invention, there fore, is a device to be used in combination with the old, well known and tried system, outlined above, that will not only protect the suction pipe ‘ of the pump from sludge accumulations but will insure that the impurities of the fuel oil tank will pass from the tank to the ?lter only once, A plug portion 6 may be threaded to ?t a tank 10 opening as suggested in Fig. I, or any type of joinder‘ may be used. The connection 4 will be properly connected to the suction inlet of a fuel oil pump in any suit able manner and the connection 5 will be suitably 15 joined to the overflow outlet of an oil burner unit of the general type heretofore indicated. Below the plug portion 6 are two pipes which extend different distances into the fuel tank, represented by l and 2, the suction pipe indicated 20 by numeral 8 being the longer and hence pene trates the tank further than the overflow pipe 9. A circulation cup Hl, which is the essence of the present invention, is positioned below the ends of the pipes 8 and 9 in such manner that both 25 free ends of these pipes are submerged below the upper rim Illa of the cup ill. The cup It may be supported in any preferred manner but I prefer to weld it to the pipes 8 and 9 as shown in Fig. I, the welds being indicated by I?b. 30 I also prefer to make the device as a unitary structure so that it may be inserted in the tank, for which purpose the opening for the plug, or whatever substitute, will be larger than the out side diameter of the cup. 35 By the simple but effective device of the cup l0 positioned properly below the suction and de livery pipes, all oil returned to the tank is avail able for repumping, save only that the‘ actual consumption will flow over the top of the cup‘ to 40 notwithstanding as much as 80 or 90 percent of the capacity of the pump as operated is returned Al O constantly to the storage tank through the over . make up for what is used. Since the oil passing flow pipe and ?ltered oil returned to the tank once through the ?lter to the atomizer returns through the over?ow pipe will be available un to the cup as ?ltered oil and is: again repumped, contaminated as pump supply, except for the very the net result is much cleaner oil to the atomizer small increment of oil to replace that actually than heretofore and less clogging trouble with 45 45 the atomizer element. burned. I accomplish the named objects and others that The cup should be at least two and a half will be immediately-apparent to those skilled in inches high for a 500‘ gallon tank since with a the art to which this invention appertains, by round tank that much height will be required so the mechanism illustrated in the accompanying that the inevitable sludge accumulation does not 50 over?ow the cup and the tank will of course be drawing, in which,— Fig. I is an elevation of my invention, partly provided with the usual sludge outlet at its ex in section and in part broken away to show its treme lower inside point so that it may be made 55 application to an oil storage tank; Fig. II is a projection of a part of Fig. I; and ready for re?ll when required. Having disclosed my invention so that it may 55 2 2,122,227 be understood as to construction and having ex dividual pipes connected to the head in registry plained some of its principal advantages, what I with the respective passageways that are adapted to reach nearly to the bottom of a tank and an open top cup member positioned to submerge the free ends of both pipes, that is made rigid with claim as new and desire to secure by Letters Pat ent, is,— l. A tank ?tting for a fuel oil tank comprising in combination an oil suction pipe, an oil over ?ow pipe and an open top circulation cup posi the external surface of one or both of the pipes. tioned to submerge the free ends of said suction as an open top circulation cup member that is and over?ow pipes below the edge of the open top adapted‘ to submerge the free ends of suction of the cup. 2. A tank ?tting de?ned in part as a head‘ and over?ow pipes projecting into a tank suction and over?ow pipe ends made rigid with the cup and means for maintaining the said cup in posi tion with respect to the said free ends of the member that is adapted for tight joinder with the top of an oil tank and having separate‘ suc tion and over?ow passageways therethrough, in 15 dividual pipes connected to the head in registry with the respective passageways that are adapted to reach nearly to the bottom of a tank and an open top circulation cup member positioned to submerge the free ends of both pipes. 20 4. A sediment cup for a fuel oil tank de?ned 3. A tank ?tting de?ned in part as a. head member that is adapted for tight joinder with the top of an oil tank and having separate suc tion and over?ow passageways therethrough, in pipes. 5. A tank ?tting defined as a two ported head, 15 pipes made rigid with the head in registry with the ports that are adapted to de?ne two inde pendent conduits to a point near the inside bot tom of a tank upon which the head is mounted and an open top circulation cup member posi 20 tioned to submerge the ends of both pipes below the rim of- its open top. ELL/HER. E. GOEI-ILER.