US1308005A - Milton a - Google Patents

Description

IVI. A. FESLER.

LIQUID FEED SYSTEM.

APPLICATION FILED MAR 8,191@

l ,308,005 Patented June 24, 1919.

tr-forge?? Y To all whom it may concern.'

UNITED VSTATES PATENT omnes.A

MILTON a nanna, or oAxnANn, cnLIronNIL'assIeNon To rises maar orr. g BURNER INc.,-F BosToN, vMassai;rnrsurms, n conromTIoN or massacrati.

sans.

` LIQUID-FEED SYSTEM.

Specification of. Letters Patent. Pafenlted June 24, 1919.

Application and umn s, 191s. serial No. 221,113.

Be itknown that I, MILTON A. Frasnes, a citizen of the United States', and resident of Oakland,

`used comprising a reservoir for thenoil con- Nnected by piping'with the burner, the o1l being drawn through the piping to the burner by a pump which produces a vacuum or pressure reduction in the piplng. Alsof the piping has been arranged .to form a siphon adapted to cooperate with the pump to cause the flow ofthe oil through the systern. This has beenfound to be an eiicient system under normal conditions, but if a leak, break orother accident occurs 1n the system, oil will escape from the piping, and

,when the siphon is used the oil may continue to flow from the reservoir until exhausted therefrom, with consequent loss of oil and attendant-danger and damage to the building in which the system is installed.

" The aim `andpurpose of the present invention is to provide asystem whereby liquid may be automatically prevented from flowing from the system in case of accident thereto, or on rise of temperature to a predetermined point. A

rllhe character of the invention may be best understood by reference tothe following description of one good form thereof shown in the accompanying drawings, Whereinz Figure 1 is a side elevation of an oil feed system embodying the invention appliedy to a burner;

Fig. 2 on an enlarged scale is a sectionV county of Alameda, and State ofl California, have invented an Improvement 1 *ferrind te t d drawing, th'e liquid feed' syste-m embodying the invention may be applled to var1ous`uses, but 'forfpurposes of lllustration, in the present instance, the sys-,

tem is shown in connection with a crude oil burner 1, which may be of usual constructlon and hence is unnecessary to show in letall herein. A suitable reservoir may be provided for the liquidor oil, and may"con Iveniently be in the form of a tank 3 mounted in a concrete pocket 5 above the level of the floor 7 on which the burner and the where it is connected to a feed pipe 13 extending horizontally away from the reservolr around the manhole 3c and thence other suitable material. The pipe 13 may be .connected to a vertical feed pipe 15 which may extend downward to a suitable vacuum pump. In the present instance is shown a steam pump of usual construction,

comprising the pump cylinder 17 and the steam cylinder 19 containing pistons connected by the connecting rod 21. `A pipe 23 leads from the pump cylinder 17 to a heating chamber 25 containing a pipe coil 26 wh1ch receives exhaust steam `from the steam cylinder and heats the fuel to render the same in better. condition for combustion. I A pipev 27 leads from the heating chamber upward to a pair of branch pipes y 29 and 31, the pipe 2,9 leading to the burner and the pipe 31 leading back to the oil supply tank and serving as a return pipe for any excess oil not required by the burner. A dome 33 may be connected to. the oil supply pipe 27 conveniently at the juncture. of the 4branch pipes 29 and 31 therewith. The oil is forced by the pump-up into this dome,

Vcompressing the air confined therein, and

thus the dome Tinsures a continuous -flow of oil to the' burner instead of. a pulsating flow slch as otherwise would b e had by a reciprocating pump.- A valve'35 may be pro# .vided to control the returnl or lay-*passing o' through a lire-proof wall 14 of concrete or Y oil to the reservoir. A gage 39. may be provided for the pipe`15 to indicate the vacuum or pressure reduction therein.

' vThe system of. piping leading from the reservoir to the burner may be. in the form f a siphon, the pipes 11 and 15 constituting the short and long legs of the siphon respectively. The construction is such that when the pump draws the air f-romsaid pipes, a,

siphon effect is produced which assists in the delivery of the fuelfrom the reservolr to the burner. In the event of an accident to the system,

such, for example, as a break orleak .therein, gravity will cause'the fuel remaimng in the pipes 13 and 15 to iow therefrom with consequent loss of fuel and l1ab1l1t of 1gnition or other damage to the bui ding 1n which the system is installed; and Where the piping is in the form of a siphon, the oil may continue to flow` from the system .until -the 'supply in the reservoir is exhaustthereof.

Since the vacuum tank is mounted in the oil reservoirv and the latter is located in a concrete pocket separated by a fire-proofj' wall from the room. containing the burner,

danger of ignition of the oil from accidental causes'is eliminated.

The vacuum tank maybe provided with a pipe 46 projecting from a point adjacent the bottom of the tank up through the top of the tank and thence horizontally to the pipe 11 for delivering oil from the reservoir.

Suitable means may be rovided for cntrolling` the discharge of oi through the piping to the vacuum pump. In the present instance, for this purpose a feed control valve 47 is provided connected to the pipe 11 at a point conveniently accessible from the manhole 3c at the top of the reservoir. This valve comprises a seat 49 (Fig. 2) and a disk 51 urged toward said seat by a coil spring 53 mounted in telescoping tubes 55 and confined between said disk and a plunger 57 having a stem 59 threaded to the upper end of one o f the tubes 55 and adapted to be adjusted by a handle 61 to vary the tension of said spring as required.

In operation, the pump will produce a vacuum or .pressure reduction in the piping and the vacuum tank, thereby lifting the valve disk 51 from its seat 4.9 against the resistance of the spring 53 and causing the oil How from the reservoir, through the plplug to the pump. It is then forced to the heating chamber, where it is rendered lighter and in better condition for burning, and thenceto the burner.

If a leak or otheraccident occurs inthe or partial vacuum in the vacuum tank will automatically draw oil up out of the pipes 13 and 15 into the tank and prevent loss of the oil in said pipes and prevent siphoning of the oil from the reservoir. After the system'has been repaired and the pump started again, the oilwill be first drawn from the vacuum tank, thereby roducing the vacuum therein, and then t e oil 'will be drawn from the reservoir as before.

It may be desirable to automatically draw the oilvor liquid from the piping in case fire or other cause raises the temperature of the room in which the piping is located to a predetermined point. To accomplish this, in

. the present instance,the union 63 in the oil -feed pipe -15 may have a fitting 65 (Figs. 1 and 3) attached thereto formed to present a seat 67 surrounding a port 69 opening into the room. Coperating with said seat is a valve 71 having a stem 73 fitting loosely in a guide bore in a plug 75 threaded to said fitting. A link 77 of suitable fusible composition has one end connected to said valve and its opposite end connected to an eye in an elbow 79 projecting from` the body of the fitting.- l

The construction is such that the valve is normally held on its seat by the fusible link, but if the temperature of the room rises to a predetermined point, such, for example as 140 degrees F., the link will fuse and allow the suction in the iping to move the Valve from its seat, there y admitting air through the port into the fitting, causing the pressure to rise in the piping .and permitting the vacuum tank to'draw the oil from the piping into the tank.

The temperature responsive device may be located sufiiciently near to the furnace so that in the-event of a flare back from the furnace, the fusible link will be melted and the .oil will be automatically drawn from the piping as described.

While the invention has been described more particularly with reference' to the feed of oil toburners, it will be obvious that it is adapted for other uses as desired.

, It will be understood that the invention is not limited to the specific embodiment shown, but that. various deviations may be made therefrom without departing from the spirit and scope of the appended claims.

What is claimed is:

- 1. The combination with @reservoir :forA

said reservoir, a' valve in said system, and

' means automatically to close said valve and l`withdraw from the system liquid therein beyond said valve in the eventof a leak in the system. 4

2..'1he combination with a reservolr for liquid, of a System to conduct liquid from said reservoir, a valve in said" system, and means includin a vacuu-m tank automati? cally to closellsald valve and withdraw from the system liquid remaining in the system beyond said valve in the event of a leak 1n the system. y n

'3L The combination with a reservoir for liquid, of a system to conduct liquid from said reservoir, a valve in said system, spring means tending to close said valve, means automaticallyto open said valve against the` resistance of'said spring means to feed liquid from said reservoir, and a vacuum tank for automatically drawing into the tank liquid vstanding in the system on closure' of sald valve.

4. The combination with a; reservolr for liquid, of a system to conduct liquld from sald reservoir, a valve in said system, a pump for normally producing a 'suction effect in the system to open said valve and draw liquid therethrough, and a .vacuum tankcommunicating with the system for automatically drawing liquid from the system in the event of loss o suction effect in the stem.

5. The combination with a reservoir for liquid, of a vacuum tank, piping for conducting liquid from the reservoirand commumcating with said tank, a valve in the piping, means normally to produce a suction effect in said piping and tank to automatically open said valve and cause flow of liquidfrom the reservoir, and means automatically to' close said valve to interrupt :How of 'liquid from the reservoir'on loss of the suction eect in the piping.

6l In a liquid feed system, the combination of a reservoir for liquid, piping to conduct liquid from said reservoir, a pump to produce suction effect in said piping to draw liquid from the reservoir through said piping, a valve in said piping-opened by suction effect produced by said pump and automatically closed on loss of said suction eect, and a vacuum tank communicating with said piping at a pointbetween said pump and valve and operating automatically to draw liquid from the piping into said tank onloss of said suction effect.

l7. The combination with a reservoir for fiuid fuel, of a burner, piping to conduct fuel from said reservoir to said burner, a pump normallyto produce suction effect in said piping to feed fuel from the reservoir, thrapqgh the piping to the burner, and means mc). mg a vacuum tank for automatically Vwithdrawing fuel from the piping on loss of the suction effect therein. L

8. The combination with a reservoir for fluid fuel of a burner, piping to'conduct `:fuel from said reservoir to said burner, a ,valve in said piping, a pump to produce suction effect in said pipingto feed lfuel from the reservoir through.- the piping to the burner, means to heat the fuel to render the same in better condition for combustion, and means automatically `to withdraw the fuel from the system on loss of said suction effect.

9. The combination with a reservoir for liquid, a Siphon system for conducting liquid from the reservolr, means to produce a suc-v tion effect in the system to cause the feed ofV liquid from the reservoir through the system, and means automatically to withdraw the li uid from the system in the event of a leak t erein.

10. The combination with a reservoir for liquid, of a system vto conduct liquid from said reservoir, a normallyr closed valve in4 said system, temperature responsive means to allow opening of said valve, and means automatically to withdraw liquid from the system on opening of said valve.

11. .In a liquid feed system, the combination with a reservoir for liquid, of a vacuum tank, piping connected with said reservoirl and tank for conducting liquid from said reservoir, means to reduce the pressure in said piping and tank to draw liquid from said reservoir through said piping, and temperature responsive means to automatically admit airto said piping and render said tank effective to draw liquid from said piplng. 4 12. In a liquid feed system, the combina- 4 tion with a reservoir for liquid, of a vacuum tank, vpiping connected with said reservoir and tank for conductingliquid from said reservoir, means to reduce the pressure in said piping and tank to draw liquid from said reservoir through saidpiping, a valve normally preventin entrance-of outside air into said piping an temperature responsive means for allowing said valve to open automatically on rise of temperature thereat to a predetermined point to admit air 4to said piping and drive the liquid from said piping into -said tank. i

13. In a liquid feed system, the combination with a reservoir for liquid, of a vacuum tank, piping'connected with said reservoir and tank for conducting liquid from said reservoir, means to reduce pressure -in said piping and tank to. draw liquid from said reservoir, 'a valve for said piping normally A closed to prevent entrance of outslde air into said piping, and means including a fusible member for allowing said valve to open on -rlse of the temperature thereat to a predetqrmined point, to admit outside air into the piping and drive the liquidinto said tank.

'/f v 14. In a liquid fuel feed systeln, the comburner and leding back-fo s'aid reservoir, a bination with a reservoir for the fuel,A of a vvacuum tank connected to said' feed pipe burner,a. feed pipe for conducting fuel from and `a epring-pressed valve connected to sai 10 fsaid reservoirto Said b i'lllf,` Pump means feed plpe.

5 connected into saidpipe begeen smd'reser-` In testimony whereof', I have signed Voir and burner, a return pipe'connected to name to this specification. .said feed pipe between saiizlf lpump' and v MILTON A. FESLER.

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