US1690329A - Means for controlling the flow of all fluids in an oil-burner apparatus - Google Patents

Description

Nov. 6, 1928. 1,690,329

w. M. BAXTER MEANS FOR CONTROLLING THE FLOW OF ALL FLUIDS IN AN OIL BURNER APPARATUS Filed Aug. 16/1926 4 Sheets-Sheet l Fig.1

INVENTOR 4% ATTOCIZNE Nov. 6, 1928. 1,690,329

w. M. BAXTER MEANS FOR CONTROLLING THE FLOW OF ALL FLUIDS IN AN OIL BURNER APPARATUS Filed Aug. 16. 1926 7 4 Sheets-Sheet 2 INVENTOR BY man a in ATTORNE Nov. 6, 1928. 1,690,329

W. M. BAXTER MEANS FOR CONTROLLING THE FLOW OF ALL FLUIDS IN AN OIL BURNER APPARATUS Filed Aug. 16, 1926 4 Sheets-Sheet 4 w ATTORNEY Patented Nov. 6, 1928.

UNITED. STATES WILLIAM H. B Ax'mn, or roar WAYNE,

PATENT OFFICE.

INDIANA, ASSIGNOR, BY MESNE ASSIGN- ImNTs, TO THE WAYNE noun EQUIPMENT COMPANY, OF FORT WAYNE, INDIANA,

A CORPORATION OF MARYLAND.

ImANs ron coNraoLL Ne THE FLOW or ALI. FLUIDS IN AN OIL-BURNER APPARATUS.

Application filed August 16, 1926. Serial No. 129,489.

light, and the flow' of fuel must be shut off so that the burner nozzle and the combustion chamber will not be flooded. These flows are inter-related and one object of this invention is to provide combined means for regulating all these flows.

Another object of my invention is to provide means for preventing the siphoning of fuel oil from the 'source of supply to the' burner tip regardless of the position or altitude of the supply tank.

Another ob ect of m invention is to provide means for control 'ng the flows of fuel oil, air and gas to an oil burner by the pres sure of the fuel oil flowing through the system.

Another object of my invention is to provide highly concentrated means for regulating all these flows for only a very limited space is available in oil burning apparatus for domestic and many uses.

Another object of my invention is to provide a rugged mechanism such as will not require the services of an expert attendant and which when properly adjusted will operate without supervision, as few householders will have available expert attendants nor will they wish to be annoyed by requirement for service from anyone.

Another object of myinvention is to provide comparatively inexpensive control means of the character indicated, a very important feature of domestic installations.

This and other objects will be more apparent from the following complete description of the invention.

In the articular embodiment of my invention se ected for illustration Figure 1 is a side elevation of an oil-burner assembly including combined air, gas and fuel oil controlling means, part of the housing being cut away and in section to show the ,fandamper.

invention relates to oil burners and i Fig. is a top plan view of the controlling means with the damper omitted.

Fig. 3, a detail, is the lever through which both valves and the damper are actuated by the pressure of the fuel' oil on the sylphon bellows.

Fig. 4 is an elevation of part of the controlling mechanism with the sylphon bellows and gas valve shown in axial section taken on line 44 of Fig. 2.

Fig. 5, a detail, is an elevation showing in axial section the oil valve lifting shaft and attendant parts shown at the top of and taken on l ne 5-5 of Fig. 2.

Fig. 6, a detail, is a vertical axial section through the gas valve and attendant parts, taken at 90 from the view Shown in Fig. 4 and on the line 6-6 of Fig. 2.

Fig. 7 is a vertical axial section on the line 7-7 of Fig. 2 through the non-siphoning oi] valve and attendant parts.

Fig. 8, a detail,.is a perspective of the oil ,valve lifting yoke.

Fig. 9 is an exterior side view of the oil valve plunger shown in horizontal instead of vertical position, and

Fig. 10 is an end view of the same from the small end.

Referring now to the drawings, T is a tripod frame to which the control mechanism is secured and upon which the fan housing F is mounted, being secured thereto by screws f. A motor M surmounts the fan housing and is secured to it. The damper f is mounted in the air delivery pipe f of the fan housing, being secured in position and adapted to oscillate on a pivot f, to which it is fixed by means of set screw 7'. The projecting lug f forms a lever for actuating the damper and to this lever is secured by pin f a connecting bar P. The damper is opened by upward. pressure on the connecting bar f which is pivoted by pin f to weighted lever D hereinafter to be described. The power chamber within which is mounted the sylphon bellows a and a fuel oil chamber which contains the oil valve, are preferably formed from a single casting. That portion of this casting which forms the casing for the power chamber is designated as 1 and has a chamber a and a cover plate a. Within this chamber is mounted a sylphon bellows pressure valve assembly consisting of a sylphon bellows a with a top head a ex tended at its sides so as to have its edges clamped between the top of the chamber easing 1' and the bottom of the cover plate a by screws (1. Both the cover plate a and the top head a are pierced axially to receive the plunger a which reciprocates vertically therethrough. This plunger (1 is secured to the sylphon bottom head a by pin a and its lower portion is extended to form a guide rod seated in the axial bore a of the boss a on the inner side of the bottom of the casing l. The sylphon is hermetically sealed to its top head a" and to its bottom head a so that when the fuel oil enters this chamber and a sufficient pressure is built up to compress the sylphon bellows the plunger (1 is forced upwardly. To one side of the pressure chamber casing 1 is formed the flange 1 through holes f in which, b screws 9 this portion of the control mec ianism is secured to the tripod support T. At another side of the pressure chamber easing 1 is formed a non-siphoning fuel oil valve casing 1 A cored passage 1 connects the chamber of 1 with the chamber of 1. The chamber of 1 is designated as I) and has inlet 12 and outlet 6. The casing 1 is bored vertically at b. A valve plunger 6 with capillary sealing groves b relief groove 7) and top flange Z2 is axially bored at b from the top nearly its entire length to receive valve spring 8, and this valve plunger is adapted to reciprocate in the bore 1). The lower end of the valve plunger b is undercut at b to receive a soft metal seating plug b which has a groove 6 adapted to co-act with the oil valve seat 6 on the renewable valve seat plug 6 which is threaded into the casing inner end a in the wall of the casing 1 passing outwardly through stuffing box a, carrying on its outer portiona lever c fixed to said shaft, and on its outer end a lever D with a weight d pivoted on said shaft. Through a fork d extends a pin f which acts as a pivot for the lower end of the connecting bar 7. The lever c has on its under side a boss 0 against which the top of the plunger a impinges. The upward movement of the lever 0 is limited by the adjustable stop 0 and its downward movement is limited by the adj ustable stop a threaded at 0 through said lever. On one side of the lever c is formed a lug a and upon this lug the lever D rests. The gas valve casing g is formed in the upper part of a bracket G which is secured by screws 9 to the cover plate a. The casing g has a gas inlet g", a gas outlet 9 and bleed port 9 to admit a small quantity of gas continually so as to maintain the usual pilot light adjacent the burner. Any greater flow of gas through the casing g is controlled by the poppet valve g with guiding member g adapted to reciprocate in the bore and normally held to its seat by coiled spring .5". This spring is adapted to be opened by the upward pressure of the valve stem 9* which passes through the stuffing box 9 and is actuated by the lever 0" whenever said lever is raised.

Fuel oil is taken into the system to the pump P through the pipe 72 and the excess is returned to the storage tank through the pipe 2 The fuel oil supplied to the burner is pumped by pump P through the pipe 72" through the inlet 11 into the chamber Z1, and after suflicient pressure is built up in the power chamber a to compress the sylphon, raise the lever 0 rotate the shaft C, and through the yoke b raise the valve plunger 6 the fuel oil flows from the outlet 6 through the pipe 2 to the spray tip in the combustion chamber (not shown).

As in all such apparatus, a thermostat is used to shut off the power and as soon as the motor stops running the pump is out of operation. In this apparatus when there is no pressure exerted on the fuel oil due to the stopping of the pump, the valve lunger b rests upon its seat I), thus closing t 1e passage for the flow of oil to the spray tip. It therefore prevents any siphoning of oil from the supply tank to the tip regardless of the position or altitude of such supply tank.

Special precaution has been taken to ensure the functioning of this apparatus. The operation of the damper controllin the air flow and of the gas valve controlling t 1e flush flow of gas to the burner are dependent upon the functioning of the apparatus in the power chamber, and whenever the motor and pump are shut down the sylphon returns to expanded position, this being doubly ensured, as such return is provided by the downward pressure of the spring 8 and also by the downward pressure of the weighted lever D. As

the return of the sylphon to expanded position shuts off the flow of the oil to the burner there never can be any flooding of the burner. If the spring 8 should set or break the weighted lever D alone would shut off the oil supply, and if by any possibility the weighted lever D should be held up and fail to descend the pressure of the spring s alone would shut off the oil supply.

Many changes may be made in the means shown for carrying my invention into effect without departing from the spirit of the invention, and I claim all forms covered by the claims.

I claim as my invention and desire to secure by Letters Patent of the United States:

1. In combination with an oil burning system comprising a burner, a fuel oil reservoir, a pump for forcing oil under pressure from said reservoir to said burner, fuel oil connections including a valve to control the flow of oil from said (pump to said burner, gas connections inclu mg a valve to control the flush flow of gas to said burner a fan and connections to supply air to said burner, and a damper in said connections to control the flow of air therethrough; inter-related means operable by the pressure of the fuel oil flowing through the system for synchronously actuating the said fuel oil valve, said gas valve and sa1d damper.

2. In combination with an oil burning system comprising a burner, a fuel oil reservoir,

a pump for forcing oil under pressure from said reservoir to said burner, fuel oil connections includin a valve to control the flow of oil from sai pump to said burner, gas connections includin a valve to control the flush flow of gas to sai burner, a fan and connections to supply air to said burner, and a damper in said connections to control the flow of air therethrough; means operable by pressure of the oil so pumped to said burner, and inter-related means operable by said pressure operated means for synchronously actuating saidfuel oil valve, said gas valve and said damper.

3. In combination with an oil burning system comprising a burner, a fuel oil reservoir, a pump for forcing oil under pressure from said reservoir to said burner, fuel oil connections including a valve to control the flow of oil from said amp to said burner, gas connections includi flow of gas to said burner, a fan and connections to supply air to said burner, and a damper in sald connections to'control the flow of air therethrough; pressure operated means includin a circumferentially corrugated longitudinally expansible sleeve axially compressible by pressure of the oil so pumped to said burner, inter-related means operable by said pressure operated means for synchronously actuating said fuel oil valve, said gas valve'and said damper. v

In testimony whereof I have hereunto set 1 my hand. 7

WILLIAM M. BA'XTER.

ng a valve to control the flush

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