US1365164A

US1365164A - Liquid-peed system

Info

Publication number: US1365164A
Authority: US
Publication date: 1921-01-11
Anticipated expiration: 1938-01-11

Description

M. A. FESLER.

LIQUID FEED SYSTEM.

APPLICATION FILED MAR. 29, 1918.

Patented Jan. 11, 1921.

3 SHEETS-SHEET 1.

Fig.1

I 22 Ver1t 01" M. A. FESLEH. LiQUlD FEED SYSTEM.

APPLICATION FILED MAFLZQ, 1918.

1,365,164. Patented Jan. 11,1921

3 SHEETS-SHEET 2- r' s Ji M. A. FESLER.

LIQUID FEED SYSTEM.

APPLICATION FILED MAR.29, 1918.

Patented Jan. 11, 1921,

3 SHEETS-SHEET 3.

, .Irzvenor 93 m Q. M

UNITED STATES PATENT OFFICE.

MILTON A. FESLER, OF OAKLAND, CALIFORNIA, ASSIGNOR, BY MESNE ASSIGNMENTS, TO PETROLEUM HEAT AND POWER COMPANY, A CORPORATION OF DELAWARE.

LIQUID-FEED SYSTEM.

Application filed. March 29, 1918.

To all whom it may cmwemt:

Be it known that I, MILTON A. FEsLER, a citizen of the United States, residing at Oakland, county of Alameda, and State of California, have invented an Improvement in Liquid-Feed Systems, of which the following description, in connection with the accompanying drawings, is a specification, like characters on the drawings representing like parts.

The invention hereinafter described relates to liquid feed systems, and more particularly to systems for feeding crude oil or other fuel from a reservoir to a burner.

It is frequently desirable to locate the reservoir for the oil beneath the level of the burner. For example, fire precaution sometimes dictates that the reservoir shall be in a pit outside of the building containing the burner and beneath the level of the floor on which the furnace employing the burner is located. The present invention, among other objects, provides means for automatically raising and feeding the oil from the reservoir to the burner, which is cheap and simple in construction and efficient in operation. v r

The character of the invention may be best understood by reference to the following description of one good form thereof shown in the accompanying drawings, wherein Figure l in elevation shows a liquid feed system embodying the invention installed for the purpose of supplymg oil to an oil burner for a furnace;

Fig. 2 on an enlarged scale is a side elevation of tilting tank device for automatically producing a vacuum or pressure reduction in a suction chamber associated with the oil supply reservoir;

Fig. 3 is a vertical section through the device shown in Fig. 2; v

Fig. i on an enlarged scale is a transverse section taken on line l'4 of Fig. 2;

Fig. 5 on an enlarged scale is a vertical section through the suction tank;

Fig. 6 on an enlarged scale is a vertical section through the burner; and

Fig. 7 is a transverse section taken on line 77 of Fig. 6.

Referring to the drawings, the system shown therein as one embodiment of the invention, is installed for supplying oil to a burner 1 for a furnace 3 of usual construc- Specification of Letters Patent.

Patented Jan. 11, 1921.

Serial No. 225,575.

tion and unnecessary to show and describe in detail herein. The burner may comprise a casing or cylinder 5 (Fig. 6) adapted to have air forced thereto from a suitable source of supply through a pipe 7. Within the cylinder 5 is a Venturi tube 9 having a flaring forward end fitted into said cylinder and secured thereto. Passages 11 between the Venturi tube and the cylinder allow the air to enter an air chamber 13 and pass thence through ports 15 into the mixing chamber 17.

The air passing through the Venturi tube draws oil up through a nozzle 19 from a bowl 21 conveniently beneath and secured to the cylinder 5. To maintain the oil in the bowl at a predetermined level, it may be provided with a float 23 controlling a me dle valve 25.

The supply of crude oil for the burner may be contained in a reservoir 27 (Fig. 1), in the present instance, located in a pit 29 outside of the building containing the burner and beneath the floor 30 on which the furnace is mounted. The walls of the pit may be of concrete or other suitable fireproof material to furnish a housing for the reservoir which will prevent access of fire thereto. The reservoir may have a tube 31 through which the oil may be poured into the reservoir to fill the same, and may have a tube 33 to allow air to enter the reservoir as the oil is drawn therefrom.

The means for raising and feeding the oil from the reservoir to the burner, in the present instance of the invention, comprises a pipe 35 projecting from a point adjacent the bottom of the reservoir through the top thereofand thence upwardly along a wall 37 of concrete or other suitable fireproof material separating the room containing the furnace from the pit containing the reservoir. A pipe 39 connected to the pipe 35 extends through the wall 37 and is connected to'the top of a suction tank 41 conveniently mounted on a bracket 43 secured to the wall 37 and held on said bracket by a strap 45 embracing the tank ans secured to said wall.

The tank 41 may contain a filling or suction chamber 47 (Fig. 5) and a discharge chamber 4:9. The pipe 39 is adapted to conduct oil from the reservoir directly to the suction chamber 47, the delivery end of said pipe being provided with a suitable strainer 51 to prevent foreign matters from being carried by the oil into the suction chamber.

To produce the vacuum or suction in said chamber, a pipe 53 may be provided, having one end connected to the top of the tank and communicating with the suction cham ber, and its opposite end connected to a device to be described for producing the vacuum or suction effect. To permit interruption of the suction effect in the chamber 4C7 at the times required, a valve 55 may be provided at the upper end of said chamber adjacent the pipe To allow entrance of outside air into the suction chamber at the times required, a valve 57 may be provided at the upper end of said chamber. The suction and air valves may be automatically controlled by the level of the oil in the cham ber 47. To accomplish this, in the present instance, a float 59 may be mounted in said chamber and be guided by a stem 61 adapted to project into a port 63 projecting from the bottom of the s .ction chamber into the delivery chambcr 19, the lower end of said port being provided with a flap valve 05. The upper end of said float is provided with a stem 67 connected to one end of a lever 69, the opposite end of which is pivotally connected to a member 71 depending from the top of the tank. Upward movement of this lever may be limited by en agement of a lug 73 thereon with a stop formed in said member. The lever 69 may be connected by a link 75 with an 77 fast on a shaft 79 journaled in a fork 81 depending from the top of the tank. rin arm 83 loose on said shaft is connected to the suction valve 55 and the air valve 57. ii pair of springs 85 may have their opposite ends connected to lugs projecting from the outer ends of the arms 77 and 83. The construction is such that when the float rises, it will tilt the arm 77 in a clockwise direction and move the ends of the springs connected thereto up past the shaft 79. As soon as this occurs, the springs will contract, rock the arm 83 in a contra-clockwise direction, and snap the suction valve to its seat and the air valve from its seat. When the float lowers, it will tilt the arm 77 in a contra-clockwise direction, thereby moving the ends of the springs attached thereto down past the shaft 79. As soon as this occurs, said springs will contract and rock the arm 83 in a clockwise di rection, thereby snapping the suction valve from its seat and the air valve 55 to its seat.

The discharge chamber d9 may be continuously opened to the outside atmosphere through an annular passage 87 surrounding the suction chamber a7, and communicating with port 89 communicating in turn with a pipe 91 connected to the top of the tank above the air valve 57, referred to, said pipe serving also to adi lit air to the suction chamber when the valve 57 is opened.

To deliver the oil from the discharge chamber to the bowl 21 beneath the burner, a pi; e 98 may be provided having its upper end 95 projecting a substantial distance up, into the discharge chamber to trap any sediment in the oil, the opposite end of said pipe 98 being connected to sail bowl. Any sediment accumulating in the discharge chamber may be flushed therefrom through a pet cock 97.

Suitable means is provided for producing the vacuum or suction effect in the chamber 17. To accomplish this, the pipe 53, referred to, is ertended upward along the wall 37 to a tank 99 of steel or other suitable material, and conveniently having a cylindrical body 101 (Figs. 2 and 3) having bumped

heads

103 and 105. This tank may be seated on a support 107 (Fig. 1) conveniently of T- shaped form and presenting stud shafts 109 and 111 journaled in bearings 113 and 115 mounted. on a be. e 117 supported by a bracket 119 1) conveniently secured to the wall above the suction tank 11. The tank 99 and its support 107 are adapted to tilt on the axis of the shafts 109 and 111 to the full line and dotted line positions shown in Fig. 2. The shaft 109 may have a duct 120 (Fig. 1) communicating with the pipe 53, and with a duct 121 extending upwardly through the support 107 and communicating with a pipe 123 projecting toward the top of the tank 99. To prevent leakage between the duct 119 and the pipe a stufiing box may be provided therefor comprising a gland 125 threaded into a counter-bore in the end of the shaft 109, and confinin suitable packing material 127 between them.

ll hen the tank is in its inclined position shown in dotted lines in Fig. 2, water may flow into said tank from the city main, and when the tank tilted to its horizontal position shown in full lines in Fig. 2, the water may flow from said tank to produce a vacuum or a partial vacuum therein. To accomplish this, in the present instance, a duct 129 4) may be formed in the support 107 and have one end communicating with the interior the tank 99, and its opposite end communicating with a duct 131 in the shaft 111. The duct 131 also communicates with a pipe 133 communicating with a valve casing 1355 (Figs. 2 and mounted on a tube 137 on a base 139. The tube 137 is connected to a pipe 111 (Fig. 1) which may project around the edge of the bracket 119 beneath the same through the wall. 37 and lead to the city main and receive water therefrom.

To control the entrance of water into the tank, the valve casing 135 may be provided with a valve 1 1 (Fig. 3) cooperating with a seat 1 15 and having a stem slidable in a hollow stem 1 17 projecting through a neck 149 rising from said valve. The valve is urged to its open position by a helical spring 151 confined between the upper end of the neck 149 and a head 153 on said stem 147. A spring 143 confined between the valve and the end of the stem 147 tends to move the valve downward until limited by en gagement of a pin 143 with the ends of slots in the stem 147. The construction is such that when the tank tilts downward, it will engage the head 153, thrust the stem 147 downward, and move the valve 143 to its seat and shut off the supply of water to the tank. When the tank tilts upward, it will release the valve, and the spring 151 will lift the latter from its seat and admit water to the tank. 4

Means may be provided to permit the water flowing from the tank to escape to the sewer. To accomplish this, in the present instance, a short pipe 155 (Figs. 2 and 3) connects the valve casing 135 with a valve casing 157 mounted on a tube 159 on a base 161, said tube being connected to a pipe 163 leading to the sewer. A valve 165 in said casing 157 cotiperates with a seat 167 and is controlled by a stem 169 projecting upward through a neck 171 rising from the casing 157. The valve 165 is urged toward its seat by a helical spring 173 confined be tween the upper end of the neck 171 and a head 175 on said stem. The construction is such that when the tank tilts it engages the head 175, thrusts the stem 169 downward, and opens the valve 165 to allow the water to flow from the tank, and when the tank tilts upward, the spring 173 becomes effective to close the valve to its seat and prevent escape of water from the tank.

It will be noted that the water inlet valve 143 is above its seat, whereas the valve 165 is beneath its seat. Consequently, downward tilt of the tank closes the valve 143 and opens the valve 165, and upward tilt of the tank allows the valve actuating springs to open the valve 143 and close the valve 165.

To prevent leakagebetween the shaft duct 131 and the pipe 133, as the former rocks relatively to the latter, a suitable stuffing box may be provided therein, comprising a gland 177 threaded into a counter-bore in the end of the shaft 111 and confining suitable packing material 179 between them.

To tilt the tank upward after the water has discharged therefrom, it may be provided with a counterbalance weight 181 (Fig. 2) on the outer end of an arm 183 secured to the support 107. To permit water to flow into the tank, but prevent ingress of air into the tank When the water flows therefrom, suitable valve means may be provided, in the present instance, in the form of a cylinder 185 (Figs. 2 and 3) having a port 187 communicating with the tank,

and ports 189 communicating with said port and with the outside air. A ball valve 191 is urged downwardly to close the port 187 by a helical spring 193 confined between said ball valve and a plug 195 threaded into the upper end of the cylinder 185. A suitable stop 197 (Fig. 2) may be provided to limit the tilting of the tank to its dotted line position.

The operation of the system is as follows:

Assuming the tank 101 to be in its inclined position shown in dotted lines in Fig. 2, the water inlet valve will be opened and the water discharge valve will be closed. Then the pressure on the water in the city main will force the water through the pipe 141, the tube 137, the valve casing 135, pipe 133, and thence through the ducts 131 and 129 into the tank 99, the ball valve 191 autoy matically opening to allow air in the tank above the water to escape therefrom. When a sufficient amount of water has accumulated in the tank, the latter will tilt downward, thereby closing the water inlet valve and opening the water discharge valve. This will allow the water to flow from the tank through the ducts 129 and 131, through the pipe 133, the valve casing 135, the pipe 155, the valve casing 157, the tube 159, and thence through the pipe 163 to the sewer. The ball valve 191 is automatically forced to its seat and thus prevents entrance of air into the tank as the water flows therefrom. As a consequence, a vacuum or partial vacuum will be produced in said tank. This vacuum or suction eifect will be transmitted through the pipe 123 in the tank, through the ducts 121 and 119, and through the pipe 53 to the suction chamber 47. The vacuum or suction effect in this chamber will in turn be transmitted through the pipe 35 to the oil reservoir, thereby drawing the oil from the reservoir into the suction chamber. The oil will be prevented from flowing from the discharge chamber 49 into the suction chamber 47 by the flap valve 65 which will be held to its seat by the suction produced in the chamber 47. After sufiicient oil has accumulated in the suction chamber 47, the float 59 will rise, thereby closing the suction valve 55 and opening the air valve 57. Air will then enter the suction chamber through the pipe 91, and the vacuum therein will be lost. This will allow the flap valve to open and permit the oil to flow from the suction chamber into the discharge chamber, and thence through the pipe 93 to the bowl 21 and to the burner, the oil being maintained at the level required in said bowl by the float actuated needle valve 25.

After a sufiicient amount of oil has flowed from the suction chamber, the float 59 will lower, thereby automatically opening the suction valve 55 and closing the air valve 57. The tank 99 is automatically intermitref:

tently tilting and producing a suction effect in the pipe 53, so that on opening of the suction valve 55, a vacuum or suction effect will be produced in the suction chamber 4L7, and oil will be drawn therein from the reservoir. Then the cycle of operations described will be repeated as before. The operation of the system is such that the oil is continuously automatically supplied from the reservoir to the burner as required.

In installing the system, care should be taken that the distance of the tilting tank above the level of the sewer is greater than the distance of the vacuum tank above the bottom of the reservoir, in order that the leg of water discharged from the tilting tank may be greater than the leg of oil lifted. Otherwise the tilting tank would not be effective to produce the suction in the suction chamber sufficient to lift the oil to the height required.

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.

Claims:

1. The combination with a burner, of a fuel supply reservoir, and means to raise the fuel from said reservoir to said burner including a suction chamber communicating with said reservoir, a support, a tank movably mounted thereon having provision for receiving and delivering successive charges of liquid for producing suction effect in said chamber to draw fuel from said reservoir into said chamber, said tank being intermittently moved on its support by the weight of the liquid charges, valve means automatically operated by movements of said tank to control the admission of the liquid into and the discharge of the same therefrom, and means to deliver the fuel from said chamber to said burner.

2. The combination with a burner, of a fuel supply reservoir, and means to raise the fuel from said reservoir to said burner com prising a suction chamber, a support, a tank mounted to tilt on said support and having provision for receiving and delivering successive charges of liquid to produce suction effect in said chamber, said tank being intermittently tilted on its support by the weight of the liquid charges, valve means automatically operated by movements of said tank to control the admission of the liquir into and the discharge thereof therefrom, a float in said chamber, and valve means actuated by said float for controlling the discharge of fuel from said chamber to said burner.

3. The combination with a burner, of a fuel supply reservoir, and means to feed the fuel from said reservoir to said burner including a suction chamber, a support, a tank movably mounted thereon having provision for receiving and delivering successive charges of liquid to produce suction effect in said chamber to draw fuel from said reservoir into said chamber, said tank being intermittently moved on its support by the weight of the liquid charges, valve means automatically operated by movements of said tank to control the admission of the liquid into and the discharge thereof thereform, a suction valve and an air valve for said chamber, a float in said chamber, and means actuated by said float for opening and closing the valves for said chamber.

4:. The combination with a burner, of a fuel supply reservoir, a suction chamber communicating with said reservoir, a support, a tank movably mounted thereon having provision for receiving and delivering successive charges of liquid, said tank being intermittently moved on its support by the weight of the liquid charges, a valve to admit liquid into said tank, a valve to permit escape of the liquid from said tank, a pipe connecting said tank and chamber, that suction effect produced by flow of the liquid charges from said tank may be transmitted to said suction chamber to draw fuel from said reservoir into said chamber, means automatically to operate said valves by movements of said tank to control admission into and delivery of the charges of liquid from said tank, and means to deliver the fuel from said chamber to said burner.

The combination with a burner, of a fuel supply reservoir, and means to feed fuel from said reservoir to said burner including a suction chamber communicating with said burner, a support, a tank movably mounted thereon communicating with said chamber and having provision for receiving and delivering successive charges of liquid, said tank being intermittently moved on said support by the weight of the liquid charges, valve means automatically operated by movements of said tank to control the admission of the charges into and the delivery thereof from the tank, and valve means to permit air to enter said tank as the liquid flows therein and prevent air entering said tank as the liquid flows therefrom, that the suction effect produced by the flow of the liquid from the tank may be transmitted to said chamber to draw the fuel from said reservoir into said chamber.

6. The combination with a burner, of a fuel supply reservoir, and means to feed fuel from said reservoir to said burner including a discharge chamber, a suction chamber communicating with said reservoir and discharge chamber, a support, a tank movably mounted thereon having provision for receivin and delivering successive charges of liquid to produce suction effect in said suction chamber, said tank being intermittently moved on said support by the weight of the liquid charges, valve means automatically operated by movements of said tank to control the admission of the liquid into and the discharge thereof therefrom, and means for delivering the fuel from said discharge chamber to the burner.

7 The combination with a reservoir, of a burner, and means to feed fuel from the reservoir to said burner comprising a suction chamber, a support, a tank movably mounted thereon having provision for receiving and delivering successive charges of liquid to produce suction effect in said chamber for drawing the fuel from said reservoir into said chamber, said tank being intermittently moved on its support by the weight of the liquid charges, valve means automatically operated by movements of said tank to control the admission of the charges into and the delivery of the charges from the tank, and means for delivering the fuel from the livering successive charges of water to produce suction efiect in sa1d chamber for drawing the liquid from said reservoir into said chamber, 4 said tank being intermittently moved on said support by the weight of the water charges, and valve means automatically operated by movements of said tank to control the admission of the charges of water into and the delivery of the charges of water from said tank.

In testimony whereof I have signed my name to this specification.

MILTON A. FESLER.