US1998020A - Pumping system for oil burners - Google Patents

Description

April 16, 35- c. A. MEZG-ER 1,998,020

PUMPING SYSTEM FOR OIL BURNERS Original Filed Oct. 24," 1932 8 F T J P7 7 11! 14 INVENTO ATTORNEY Patented Apr. 16, 1935 'PATENro F cg 1,998,029 PUMPING SYSTEM FOR 011. commas ermit; August Mezger, .Brooklyn, N. r.

Application October 24, 1932, Serial No. 639,308 Renewed September 1'1, 1934 4 Claims. (01,103-40) My invention relates to improvements in systems for circulatingfuel oil and other liquids, vapor and gases, and a device by means of which the circulation of "same is automatically con-- trolled; and the objects of my improvements are,

first, to provide a means for automatically opening the cycle of the circulatingsystem by the pressure of the circulated medium and closing the cycle of circulation by relieving the pressure 19 of same; second, to'provide a remote control of a storage tanksupply and a circulation systemior the automatic operation of same; third,'to provide an automatic means to prevent the siphoning oi iuel oil or other liquids served from a level above the circulating system through injury and leakage of same; fourth, to provide a means ,to automatically control the circulation or fuel oil or other liquidsserved from a storage tank supply below the level of the circulating system.

and illustrated in the accompanying drawing in .by the burner 22, the remaining portion being which- Figure 1 is a sectional view of the control device on the line I, 2, or Fig; 3, showing the valves closed; Fig. 2 is a similar view showing the valves open; Fig. 3 is a bottom end view of the control device; Fig. 4 is aside view of the control valve;

Fig. 5 is a top view of same; Fig. 6 is a side view oi the spring plug and adjusting screw; Fig. '7 is a top view-oi same; Fig. 8 is a view of the spring button; Fig. 9 is a 'side view of the valve spring; Fig. 10 is an end view of same; Fig. 11 is an illustration of the circulating system, showing storage tanks above and below the level of same.

Similar numerals refer to. similar parts throughout the views.

The chambered metal body ,I, the valve 2, the

coiled spring 3, the spring button 4, the threaded plug 5,-and thumb screw 6, constitute the parts of the control device; the body I has the inlet chambers with threaded ports I and 8; the suction or discharge chamber with. threaded port 9;

the port III communicating between the chambers .'I and 9 has a chamfered circumference to form a valve seat to engage in contact with a chamiered circumference of the valve 2, which has a downwardly extended hollow open ended stem II, with a port I2, adapted to engage with and slide within the cylindrical extension of the inlet chamber 8; the hollow stem of the valve 2, is also extended upwardly and has a small hole I3, communicating with the slot I4, in the top of same; the upper stem of the valve 2, serves to form a guide for the spring '3,---whlch is adapted to hold the valve 2, in ,tensional contact with the valve seat of the port III, by means of the spring button 4, the threaded plug 5, and the thumb screw 6, threaded into the plug,5. v v The control device described is adapted to form a part of the fuel oil circulating system illustrated in Figure 11, and in which the conduit I5, leading from the storage tank I 6, is connected to the threaded port I, of the control device I-; 10 a T fitting I1, with a removable plug I8, is connected to the suction or discharge port 9, andto the suction conduit I9, which leadsand is connected to theintake 29, of the circulating pump 2| of the oil burner 22; from the relief valve and 15 discharge 23 of the circulating'pump 2|, the conduit 24,'is extended back tothe control device I, and connected to the threaded inlet port 8.

In'operation the circulating conduits I9 and 24 are first primed with fuel oil at the priming port 20 of plug I1, after which the same is closed with the plug I8. v A portion 01 the circulated iuel oil is consumed passed by the reliefvalve' on the burner to the. g discharge port 23, under pressure of the cireulat- .ing pump 2|, and returned through the conduit 24, to the control device I, where it enters the .chamber 3, of the same forcing the valve 2, oil

of the seat of the port Ill, against the tension of so the spring 3, as shown in Figure 2, thus holding open the tank inlet and at the same 'time uncovering the port I2, of the valve stem II, to permit the returned oil to enter the chambers I, and 9,

to be circulated with the fuel oil from the storage, 35 tank, and during the operation of the circulating pump 2 I, open communication will be maintained between the chambers I, 8, and 9, by the pressure of the returned oil in the chamber 8, oi the control device I; should the circulating system be injured so asto cause a leak in same or the oper- -ation of the circulating pump be discontinued the pressure of the oil in the chamber ,8, of thecontrol device I, will be relieved and the tension of the springjpwill seat the valve 2, and cover 45 the port I2, the'trapped oil in the chamber 3, es-- 'caping through the small hole I3, to permit the valve 2 tojbe firmly seated thus closing communi-.-' cation between the storage tank and the circulating system.- 7 50 In the control device of the circulating system described, the tension of the spring 3 may. be a'd-" 'justed by the regulating screw 6, and the port 1 a. f

shown connected to the tank inlet conduit I3, so

the valve 2 will open in the direction of the II,

of the oil from the tank It, and in which case the tension of the spring 3 is adjusted to overcome the atmospheric pressure; the inlet conduit I! may, however, be connected to the port I, and the port I connected to the 'l' fltting I! of the conduit is, so that the valve 2 will open against the flow of the oil from the tank It, in which case the tension of the spring 3, would be only that required for the seating 01 the valve 2, to close the port 10; thetrapped oil inthe chamber I, be-- ing allowed to escape into the chamber I, through a small hole in the valve stem ll, instead of as previously described.

The circulating system and control device herein described for use with fuel oil may also be used for the controlled circulation oi! other liquids, also for vapor and gases without departing from the principle of my-invention the scope of which is intended to cover the use for same.

Having described my invention, what I claim as new, and desire to secure by Letters Patent is- 1. A control device for fluid pumping systems comprising a valve bodyproviding an inlet chamher, an outlet chamber, a return chamber, and a separate fluid connection to each of said, chambers, a port in the valve body connecting the inlet and the outlet chambers,-a valve adapted to seat across said port, said valvehaving an extension slidable in the return chamber and provided with a passageway connecting the inlet and the return chambers, and a resilient means acting to hold the valve on its seat and to close said passageway against the wall of the return chamber, the pressure in the return chamber acting to move the valve from its seat to open communication between the inlet and the outlet chambers through said port, and between said return and inlet chambers through said passageway.

2. A control device for fluid circulating systems comprising a valve body providing an inlet chamber, an outlet chamber, a return chamber, and a separate fluid connection to each of said chambers, a communicating passageway in the valve body connecting the inlet and the outlet chambers, a valve having an extension slidable in the return chamber and adapted to open and close the communication between the chambers, a resisting means acting upon said valve to close the communication between said chambers, the presing a'pump, a valve body having an inlet chamber, an outlet chamber, and a return chamber, a connection from the inlet chamber to a source of supply, a connection from the outlet chamber to the pump inlet, said pump having a discharge 'line provided with a by-pass connected to the return chamber, a port in said valve body connecting the inlet and outletchambers, a valve adapted toseat across said port, said valve having an extension slidable in the return chamber and provided with a passageway connecting the inlet and return chamber, and resilient means acting to hold the valve on its seat and to blank 01! said passageway against the wall of the return chamber, the pressure in the pump by-pass acting in the-return chamber against the valve extension to move the valve irom its seat, whereby fluid may pass from the source of supply through the valve body to the pump, and from the by-pass through the return chamber and the valve pas- 4. A iiluidv circulating system comprising a pump, a valve body having an inlet chamber, an

outlet chamber, and'a return chamber, a connection from the inlet chamber to a source of fluid supply, a connection from the outlet chamber to the pump inlet, said pump having a discharge line provided with a by-pass connected to the return chamber, acommunicating' passageway in the valve body connecting the inlet and the outlet chambers, a valve having an extension in sliding

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