US1502341A

US1502341A - Heating system

Info

Publication number: US1502341A
Application number: US539860A
Authority: US
Inventors: Evarts G Loomis
Original assignee: Individual
Current assignee: Individual
Priority date: 1922-02-28
Filing date: 1922-02-28
Publication date: 1924-07-22
Anticipated expiration: 1941-07-22

Description

July 22 1924. 1,502,341

E. G. LOOMIS HEATING SYSTEM Filed Feb. 28 1922 INVE/V TOR Patented July 22, 1924.

UNITED STATES EVARTS G. LOOMIS, OF NEWARK, NEW JERSEY.

HEATING SYSTEM.

Application filed Tebruary 28, 1922. Serial No. 538,860.

To all whom it may concern:

Be it known that I, EVARTS G. Loomrs, a citizen of the United States, and a resident of the city of Newark, in the county of Essex and State of New Jersey, have invented a certain new and useful Improvement in Heating Systems, and do hereby declare that the following is a full, clear, and exact description thereof.

My invention relates particularly to a system for heating materials at a comparatively high temperature in an advantageous manner. While my invention is capable of application for heating materials and vessels of all kinds, it is particularly applicable for heating camphor stills.

The object of my invention is to provide a heating system by means of which materials may be heated to a comparatively high temperature and uniformly over an extended period of time and without danger in the operation of the system. The object of my invention is, furthermore, to provide a heating system based upon the utilization of a heated fluid as, for example, a heavy oil. More particularly the object of my invention is to provide a heating system, in which there is an automatic control of the temperature, in which there is very little labor required in operating the same, in which the fluid medium is maintained under no pressure other than the head of the liquid, in which the pump is located beyond the heating apparatus so as to act as a suction pump and avoid danger due to excessive pressure,

in which an expansion tank is provided to ompensate for the changes in volume due to the change in temperature, and to act as a safet valve, in which the system can be drained advantageously, in which the drain outlet is at the lowest oint, in which a gas vent is located at the iiighest point, and in which the arrangements is suchthat gases cannot collect in the apparatus. Further objects of my invention will appear from a detailed description'thereof contained hereinafter.

While my invention is capable of embodiment in many different forms, for the purpose of illustration I shall only show one form of my invention inthe accompanying drawings, m which- The figure is a diagrammatic representation of a heating apparatus made in accordance with my invention shown as applied to a camphor still.

In the drawings I have shown an apparatus comprising a camphor still 1, having an outlet pipe 2, provided with a hand valve 3, which is tobe heated by the oil system. Said pipe 2 connects with a chamber 4 in which the camphor is to be allowed to solidify by cooling. In order to heat the camphor in the still an oil heating system is provided. The oil heating system comprises a main supply tank 5 having an inlet pipe 6, adapted to be heated by a steam coil 8, so as to enable the oil to be rendered sufiiciently fluid to enable it to be drawn out of the tank 5, through a pipe 9 by a pump 10 and delivered through a hand-valve 11 to a pipe 12. One end of the pipe 12 is connected to a heating tank 13 having a cast iron grid 14 connected by

wires

15 and 16 to. any suitable source of electric current. The cast iron grid 14 is comprised of a pair of parallel rods 17 and 18 supporting a plurality of folded strips 19, the ends of which are adapted to fit over the rods. Plates of mica 20 are interposed in every alternate joint between the strips 19 so that in this manner the current is compelled to pass backwardly and forwardly over the strips 19. The tank 13 is connected by a pipe 21 to another heating tank 22 having a cast iron grid electric resistance 23, the same in construction as the grid 14, this grid 23 being also supplied with current from the

wires

15 and 16. In the tank 22 there is a thermometer 24, which is connected to a thermostat 25 located in the

wires

15 and 16 so that the temperature in the tanks 13 and 23'may be automatically maintained constant. An outlet pipe 26 conveys the heated oilfrom the tank 22 to a pump 27 which in turn is connected by a pipe 28 to a gas venting tank 29 having a pipe 30 controlled by a hand valve 31 so that the gas which accumulates in the tank may be allowed to escape to the atmosphere from time to time.

Below the pipe 30 there is a funnel 32 connected by a pipe 33 to the main supply tank 5 so that any liquid escaping from the tank 29 may be returned to said supply tank. Furthermore, leading down into the body of oil in the tank 29 there is a pipe 34 containing a weighted flap valve 35 which pipe leads to an expansion reservoir 36 having a float indicator 37 and an overflow pipe 38, which leads back to the main sup 1y tank 5. The valve 35 is normally closed, ut can be r adily opened automatically in of in,

creasing pressure in the system.' From the bottom of the tank 29 there is a pipe 39 con- .nected by a by-pass pipe 40 to the pipe 12,

which by-pass pipe 40 has a hand valve 41 therein. Furthermore, between the pipes 39 and 12, there is a coil 42 located inside of the still 1, which has an inlet valve 43 and an outlet valve 44, both of which are hand-operable. Furthermore, leading from the pipe 39 there is a tube 45 having a hand valve 46 located in a reversly directed larger tube 47, both of which extend into the pipe 2 through an end cover plate 48 thereon, and from the pipe 12 there is a tube 49 having a hand valve 50, which leads to one side of the tube 47. In the ends of the pipes 39 and 12 there are

hand valves

51 and 52 respectively.

In the operation of my invention, let it be assumed that a body of camphor in the still 1 is to be heated, and that thereafter the heated camphor is to pass over into the chamber 4, where it is to be allowed to condense and solidify. A body of heavy petroleum oil is introduced into the tank 5 through the filling pipe 6. The steam is now turned into the coil 8 so as to render the oil fluid. Thereupon, the valve 11 being opened, and the

valves

51, 52 and 31 being closed, the pump 10 is started so as to supply to the s stem sufiicient oil to fill the same. When t e system has been thus filled, any air which has accumulated has been allowed to escape by the temporary opening of the valve 31, and through the vent opening at the top of the tank 36. The pump 10 is stopped, the valve 11 is closed, and the valve 41 is closed. Thereupon the pump 27 is started and current is supplied over the

wires

15 and 16. Furthermore, the weighted valve 35 is moved into closed position. Thereupon by the operation of the pump 27' the oil which becomes heated by the

grids

14 and 23 is circulated through the still 1,

and through the tubes 45 and 47 so that the camphor in the still 1 and in the pipe 2 is maintained at the desired temperature which would be in the neighborhood of 500 F. If the camphor in the still is to be subjected to heat treatment before being allowed to pass into the chamber 4, the valve 3 is maintained closed for the desired period of time and is thereafter opened. The thermostat 25 maintains the temperature of the oil substantially constant. The valve 31 is opened from time to time to permit the escape of gas formed in or accumulating in the oil. Any liquid passing out from the pipe 30 is returned by the pipe 33 to the tank 5. Any expansion in the oil due to heating is relieved by the pipe 34 communicating with the tank 36. Any overflow from the tank 36 passes back into the tank 5. There is no danger of excessive pressure in the heating tanks 13 and. 22, as the pump 27 is located beyond the same and acts as a suction pump. Furthermore when it is de:.

done without draining the reservoir 36 owing to the presence of the valve 35. Again, while the heating operation is being carried on if, for any reason, it is desired to partially or entirely discontinue the heating of the camphor still temporarily this can be done by opening the by-pass valve 41 partially or entirely. In this way the heating system works uniformly continuously and at the desired high temperature without danger to those operating the same.

While I have described my invention above in detail, I wish it to be understood that many changes may be made therein without departing from the spirit thereof.

Iclaim:

1. A heating system comprising a fluid medium circulating means, means for heating said medium, a heated supply tank for the circulating means, and an expansion reservoir connected to the system, the expansion reservoir being connected by an overflow pipe to the supply tank.

2. A heating system comprising a fluid medium circulating means, electrical means for heating said medium, a heated supply tank for the circulating means, and an expansion reservoir connected to the system,

the expansion reservoir being connected to an overflow pipe to the supply tank.

3. A heating system comprising a fluid medium circulatin means, electrical thermostatically-contro led means for heating said medium, a heated supply tank for the circulating means, and an expansion reservoir connected to the system, the expansion reservoir being connected by an overflow pipe to the supply tank.

4. A heating system comprising a fluid medium circulating means, means for heating said medium, a supply tank for the circulating means, and an expansion reservoir connected to the system, the expansion reservoir beingconnected to the system by an automatically-opening valve.

5. A heating system comprising a fluid medium circulating means, electrical means for heating said medium, a supply tank for the circulating means, and an expansion reservoir connected to the system, the expansion reservoir being connected to the system lly an automatically-opening valve.

6. heating system comprising a fluid medium circulating means, electrical thermostatically-controlled means for heating said medium, a supply tank for the circulating means, and an expansion reservoir connected to the system.

7. A heating system comprising a fluid medium circulating means, electrical means forkheating said medium, and a gas vent tan 8. A heating system comprisin a fluid medium circulatin means, electrical ther-,

- .mostatically-contro led means for heating said medium, and a gas vent tank.

9. A heating system comprising a fluid medium circulating means, electrical means for heating said medium, a supply tank for the circulating means, and a as vent tank arranged to return liquid disc arged therefrom to the supply tank.

10. A heating system comprising a fluid medium circulating means, means for heating said medium, and a pipe adapted to be heated by the system containing a portion of said system internally.

11. A heating system comprising a fluid medium circulating means, electrical means for heating said medium, and a pipe adapted to be heated by the system containing a portion of said system internally.

12. A heating system comprising a fluid medium circulating means, means for heating said medium, and a pipe adapted to be heated by the system containing a portion of said system internally, which passes out of the end of the pipe;

13. A heating system comprising a fluid medium circulating means, electrical means for heating said medium, and a pipe adapted to be heated by the system containing a portion of said system internally by means of telescoping pipes, which passes out of the end of the pipe.

14. A heating system comprising a fluid medium circulating means, and electrical means for heating said medium, said pump being located at the discharge end of the heating means.

In testimony whereof, I have hereunto set my hand and seal this 24th day of February, 1922.

EVARTS G. LOOMIS.