US1316580A - Patrick - Google Patents

Description

P. J. KELLY.

' BOILER CONTROLLER.

APPLICATION FILED MAY re. 1918.

. Patented Sept. 23, 1919.

I'nllllllBllllllllllllllll WITNESS UNITED sTATEs PA ENT orrron.

PATRICK J. KELLY, or CHICAGO, Itnmois, AssIenon 'ro KELLY oonrnotnnn COMPANY, or onIcAeo, ILLINOIS, A oonronnrron or ILLINOIS.

BOILER-CONTROLLER.

Specification of Le tters Patent.

tentedsta h-23,1919.

, Application filed May 18, 1918. Serial No. 235,255.

To all whom it may concern:

Be it known that I, PATRICK J KELLY, a citizen of the United States, residing at Chicago, in the county of Cook and State of Illinois, have invented certain new and useful Improvements in Boiler-Controllers,

of which the following is a specification.

This invention relates in general to steam boilers, and has more particular reference to a controller for the same which serves to dry the steam which has been generated -in the boiler, prevents delivery of water from the boiler into thesteam supply pipe, and admits cold water to the boiler upon priming of the boiler, thereby reducing its temperature and stopping the priming.

My invention also contemplates the provision of means which automatically admits fresh water to the boiler when the water level in the boiler falls below a predetermined point, thereby serving as an automatic boiler feeder, and is further designed to serve as a velocity reducer for'the generated steam, and also as a grease separator by which grease and other foul matter floating in the boiler may be separated and removed.

For the purpose of facilitating an understanding of my invention, I have illustrated on the accompanying drawing one preferred embodiment thereof, from an 1nspection of which when considered in connection with the following description, my invention, its mode of operation and many of its inherent advantages should be readil understood and appreciated.

On the drawing the single figure represents a side elevation of a boiler equipped with my invention, certain parts being shown in section to more clearly illustrate l their mode of operation.

Referring to the drawing, reference character 1 indicates generally a steam boiler, which as illustrated, is of I the stationary steam heating as my invention is better understood that it is capable of application to other types of boilers, such as power boilers for instance, and that the type of boiler with which my invention is used is immaterial.

The steam generated in the boiler is carried therefrom through the two branches 2 and 3, to a header of greater cross-sectional area than the aggregate cross-sectional area of the pipes 2 and 3, this header beingcon- 1 type, but it will be obvious in which the steam is to be used.

I A It willfbe' observed that the chamber 5 is equipped with downwardly curved deflectors 8 which serve to deflect the incoming steam water may drain out thereby preventing the float from becoming water logged. A bleeder-plpe 13 connectedwiththe chamber 5 near itsbottom servesto return any water delivered to the chamber 5 through the steam'pipes 2 and 3 back into the boiler.

'This pipe,fhowever, instead of being directly connected to the boiler, opens into a float chamber 1% mounted beside the boiler, its'lower end belng connected with the boiler 1 near its bottom by means of a pipe 15. When the boiler prlmes so that more water is car riednto the chamber 5 through the pipes 2 and 3 than can be immediately returned to the boiler through the small bleeder-pipe 13, this water accumulates in the chamber 5, thereby causing the float 12 to rise and close the valve 9, thereby preventing any water from flowing into the steam delivery line 7. At the same time fresh cold water is automatically admittedto the boiler to lower the temperature of the overheated surging water, thereby stopping the prim-x mg. l

The apparatus for automatically admitting cold fresh water to the boiler when the float 12 rises, consists of a water supply pipe provided with a shut-ofi' valve WhlCllw is connected to'and adapted to be operated by the float 12. The Water supply pipe is designated on the drawing by reference character 16, and it will'be observed that one end of this pipe enters the top, of the boilerwhere it is preferably equipped with a spray nozzle (not shown) adaptedlrto spray the incoming water throughout ;a 'considerable area of the boiler. The opposite end of the pipe is connected to any suitable structed'to, provide a float chamber 5 and an upwardly extending portion 6, which .com- .mumcateswiththe steam supply line 7 lead- ,ing tOthB radiators or toother apparatus source of water supply, such as a city supply main, for instance, and in this pipe there is interposed. a shut-off valve comprising the valve casing 17 carried by a lateral extension 18 of the chamber 5, this valve casing being in communication with the chamber 5 and being provided with a valveseat 19 against which a sliding valve 21 is adapted to seat. A lever 22 pivoted at 23 in the valve casing extends through a slot in the valve and is connected'at its other end by a link 24: with a lever 25 pivoted upon a suitable fulcrum 26 and connected at 27 with the float 12. When the float is in its normal lowered position as shown on the drawing, its weight through the lever mechanism just described, serves to hold the valve 2-1 against itsseat so as to shut off the water supply to the boiler through the pipe 16. Upon priming of the boiler, however, the float rises as previously explained, thereby opening the valve 21 and permitting cold fresh water to be dis charged into the boiler so as to reduce the temperature of the water therein and stop the priming. After the priming has ceased, the accumulated water in the chamber 5 will return to the boiler through the bleederpipe 15, permitting the float to fall so as to again close the valve 21.

For the purpose of automatically maintaining a predetermined water level in the boiler so as to preclude any possibility of injury to the boiler by burning, I have provided mechanism controlled by the water level in the boiler for admitting additional water through the pipe 16 when required. With this end in view, the float chamber 14? previously mentioned, is so positioned vertically that the water level therein, which will be the same as the water level in the boiler, willbe disposed some distance below the top of the float chamber so as to leave a steam space which will be filled with steam entering from the chamber 5 through the pipe 13. A float 28, vertically reciprocable within the chamber l-l, is adapted when the water level reaches the desired height, to seat against and close the lower end of a pipe 29- projecting downwardly into the chamber. When the water level in the chamber I 14L lowers to a predetermined minimum point, the float will drop so as to permit a flow of steam from the chamber 14 outwardly through the pipe 29- and through a small pipe 31 into a jacket 32 carried by the chamber 5 in substantially axial alinement with the valve casing 7. Within the jacket 32 there is disposed an expansion post 33 of copper or other suitable metal having a relatively high coefficient of expansion, and a rod 34: connected with this post projects through suitable stufling boxes into the valve casing 17 and through or partially through the opening in the valve seat 19. Under the influence of the hot steam entering the jacket 32 from the float chamber 14, the rod 31 becomes thermostatically actuated, that is, it is moved downwardly longitudinally by the expansion of the post 33, and this downward movement forces the valve 21 away from its seat so as to permit the delivery of water to the boiler through the pipe 16. It is understood, of course, that the float 12' will be raised through the lever mechanism upon depression of the valve 21 and the weight of the float will again close the valve when closing movement is permitted by contraction of the thermostatically actuated expansion post. A bleed passage 35' is provided in the bottom of the jacket to permit the escape of the condensed steam in the jacket and also a sufficient flow of live steam to maintain a steam circulation around the expansion post. lVhen the desired water level has been attained in the boiler by the admission of water as just described, the float 28 will shut oil the flow of steam to the thermostat through the pipes 29 and 31, whereupon the expansion post will contract permitting thevalve 21 to be closed by the weight ofthe float 12 and the parts will remain thus in. normal position until subsequent lowering of the water level in the boiler or priming of the boiler causes a further admission of fresh water.

It not infrequently happens that an undue amount of oil and grease and other foul matter accumulate in the boiler and float on the water. In order to rid the boiler of this foul matter, it has heretofore been necessary to drain the entire boiler. My improved apparatus, however, is de signed to relieve the boiler of these foul products without draining the boiler. To accomplish this result, the boiler is filled to overflowing with water through the usual re-filling pipe 36, and since the grease and other foul matter float, they will rise in the pipes 2 and 3 and overflow into the chamber 5. In order to prevent it from flowing back into the boiler through the pipe 13, this pipe is equipped with a hand valve 37, or an upwardly closing check valve, which is closed before the boiler is flooded. The grease and other foul matter is, therefore, trapped in the chamber, from which it will be drained off through a drain cock 38. Thus, it will be seen that the boiler may be freed from the grease and other floating foul matter very quickly and easily without draining the entire boiler.

It is believed that from the foregoing it will be understood that I- have provided a controller which reduces the velocity of the outgoing generated steam, dries the steam, prevents water from being carried over into the steam supply mains, reduces the temperature of the water in the boiler when.-

ever priming occurs, thus stopping the priming, and automatically maintains a predetermined water level in the boiler so as to prevent injury to the boiler, which results from a too low water level. The apparatus therefore serves as a safety device which prevents cracked boiler sections and precludes boiler explosions. It will also be apparent that these various objects and advantageous results are secured without the employment of packing boxes, since the working parts are arranged within the chamber and the valve casing so that no leakage of steam around these parts can occur.

While I have shown and described a pre ferred embodiment of my invention, it is to be understood that the various structural details are capable of considerable change and modification without departing from the essence of the invention as set forth in the appended claims.

I claim:

1. In a boiler controller, the combination of a chamber adapted to be interposed between a boiler and the steam supply pipe therefrom, means operable in said chamber for admitting Water to the boiler upon priming of the boiler, and means for admitting Water to the boiler when the Water therein falls below a predetermined level.

2. The combination of a boiler, a water supply pipe therefor, a valve controlling the flow of water through said pipe, means for opening said valve upon priming of the boiler, and means for opening said valve when the water level in the boiler falls below a predetermined point.

3. The combination of a boiler, means for supplying water thereto, a valve for controlling said supply, and means for opening said valve when the Water level in the boiler falls below a pro-determined point and also upon priming of the boiler irrespective of the Water level therein.

4. The combination of a boiler, a Water supply pipe therefor, a steam delivery pipe therefrom, valves in said pipes, means for opening the water valve and closing the steam valve upon priming of the boiler, and independent means for opening said water valve.

5. The combination of a boiler, a water supply pipe therefor, means for automatically admitting water to the boiler through said pipe upon priming of the boiler, and means for automatically admitting water to copies of this patent may be obtained for five cents each, by addressing the the boiler through said pipe when the water level in the boiler falls below .a predetermined point.

6. In a boiler controller, the combination of a valve for controlling the water supply to a boiler, means for opening said valve upon priming of the boiler, and thermostatically actuated means for opening said valve when a predetermined Water level in the boiler has been reached.

7. In a boiler controller, the combination of a valve for controlling the water supply to a boiler, means for actuating said valve upon priming of the boiler, and steamactuated means for operating said valve when a predetermined water level in the boiler occurs.

8. In a boiler controller, the combination of a chamber, a steam supply pipe connected thereto, a deflector for deflecting the steam entering said chamber, a valve casing carried by the chamber and in communication therewith, a valve disposed in said casing, and mechanism arranged within said chamber and casing for actuating said valve.

9. In a boiler controller, the combination of a chamber, a valve casing carried thereby, a valve in said casing, means entirely disposed Within the chamber and casing for actuating said valve, and independent mechanism outside said chamber for actuating said valve.

10. The combination of a boiler, a water supply pipe therefor, a valve controlling the flow of water through said pipe, a float chamber at one side of said boiler, a perforated float therein, means for supplying steam and water to said float chamber, a steam pipe leading from said chamber, said float being adapted to close said steam pipe, a thermostatic device to which steam is delivered by said steam pipe, and an operative connection between said thermostatic device and said valve.

11. The combination of a boiler, a chamber interposed in the lsteam supply line therefrom, a float in said chamber, a valve adapted to be actuated by said float to shut off the steam supply line, a Water supply pipe for the boiler, a valve interposed in said pipe, a connection between said valve and said float whereby said water valve is opened as the steam valve is closed, and independent means for controlling said water valve.

PATRICK J KELLY.

Commissioner of Patents,

Washington, D. 0.

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