US1183853A - Combined high and low pressure vacuum circulating system for heating apparatus. - Google Patents

Description

Q E. H. CALLAWAY.

COM BlNED HIGH AND LOW PRESSURE VACUUM CIRCULATING SYSTEM FOR HEATING APPARATUS. APPLICATION FILED 0cT.10, 1911.

1,183,853. A Patented May'23,1 )16.

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I A I I I U 7 'Zdzfnsses 'Q Q Q a 2 r. V 1 A I a I I E. H. CAL LAWAY. v COMBINED HIGH AND LOW PRESSURE VACUUM CIRCULATING SYSTEM FOR HEATING APPARATUS.

. v APPLICATION FILED OCT-1,I9Il. I 1,1 83,853. Patented May 23,1916.

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lgzlzfizeases WMjn THE COLUMBIA PLANoaRAPl-lcn, WA SHI.NOTON, D. C.

EDWARD I-I. CALLAWAY, on NEW YORK, N. Y., ASSIGNOREO THE AMERICAN o AY MACHINERY COMPANY, or EuoYEus, OHIO, A CORPORATION 0E onro.

COMBINED HIGI-lt AND Low PRESSURE VACUUM CIRCULATING SYSTEM FOR HEATING APPARATUS.

Application filed October 10, 1911.

To all whom it may concern: 7

Be it knownthat I, EDWARD H. GALLA- WAY, a oitizenof the United States, residing at New York city, in the county of New York and State of New York, have invented certain new and useful Improvements in Combined High and Low Pressure Vacuum Circulating Systems for Heating Apparatus, of which the following is a specification, reference being had therein to the accompanying drawing.

My present invention relates to certain new and useful improvements in combined high and low pressure vacuum circulating systems for heating apparatus for brick driers and other purposes,the same having for its object economy in the construction and operation of a drying apparatus as well as greater, efficiency and many other desirable characteristics. 7

The invention comprises certain novel and useful combinations of mechanical parts including steam heating pipes and a jet condensing device, the latter being so combined and arranged thata certain amount of live steam can be condensed as required to create a vacuum in the system, improve the water circulation and secure a great gain in economical operation of the apparatus.

The invention may be said, therefore, to consist essentially in the combination, construction and arrangement of the various parts, substantially as will be hereinafter thought unnecessary to show the whole of Specification of Letters Patent.

designate.

Patented May 23, 1916.

Serial No. 653,864.

it. One end is delineated at the left in Fig. 1 where I have shown a pair of vertical p1pes3, 3,. having'the horizontal pipes 4 connected thereto, and another pair of vertical pipes 5, 5, having horizontal parallel pipes 6 connected thereto. The vertical columns 8, 3, are connected at the upper end by a cross pipel having an inlet 2 through which steam is admitted to the pipe rack from the boiler. This steam may be live steam or exhaust. steam, and it obviously passes into the vertical pipes 3 and then through the horizontal pipes .4 to the other end of the drier. The returning steam and the water of condensation pass through the i other series of horizontal pipes 6 into the vertical pipes 5. The lower ends of the vertical pipes 3 are provided with pipes 11 and '12, pipe 12 passing out of the lower part of one of the plpes 3, and pipe 11 outv of the lower part of the other pipe 3, the latter connecting with thepipe 12, which latter runs to the trap 17 and constitutes oneof the circulating pipes leading to the jet condenser. From the lower end of one of the vertical pipes 5 passes a pipe 13, to which connects another pipe 14 leading from the lowerv end of the other vertical pipe 5. Obviously, the pipes 14 and 13 receive the water which'is returning from the pipe rack and is in the form of waterof condensation, and the pipes 13, and .l l'connect with the pipe 15 which runsalongside of the pipe 12 and extends to the jet condensing apparatus forming a part of the, circulating system which I am describing, and bymeans of which a vacuum is created.

On one pipe 6 leading to one of the vertical pipes 5 is a short pipe 7 which connects with a pipe 8 leadingflto one of the horizontal pipes 6 connecting with the. other vertical pipe5, and pipe 8 carries an automatic air release valve 9 and is'provided with a globe valve 10. ValveilO is closed when the sys; tem is working under 'highpressure, andis' open during low pressure operation. 7 I The upper portions of. the vertical pipes 3 and 5* are connected by the horizontal having control valves 38 thereon.

pipes 37 The pipe 12 leads to a trap 17, and from the trap 17 runs in the same directlon as pipe 12, a pipe 12 that enters the lower end of the vertical condenser shell 22. The pipe 15 which runs parallel to the pipe 12 does not connect with the trap 17, but enters the condenser shell 22 at a point oppo s1te to where the pipe l2 enters it as shown in F 1g. 2. On the pipe 15 is a valve 18, to be closed when the system is operating under high pressure, near to which is a cross-pipe 30 which connects thetwo pipes 12 and 15 and is provided with a valve 31 that is closed during low pressure operation and open during high. pressure. Furthermore, p1pe 12 is provided with a blow-off pipe 32 having therein a valve 16. A live steam pipe 21 enters the pipe 15 and is provided with a valve 20 by means of which the'supply of live steam to the pipe 15 .and to the jet condenser 22 is controlled and regulated. It is obvious that the pipes 12 and 15 leading from the pipe rack convey the water of condensation running from the pipes of said rack and pass this water into the lower end of the condenser shell22 whence, it falls into a receiver 2 1, from whence it is removed by a pump 28 through a bottom outlet pipe 29. It will be understood that by opening the valve 20 in the live steam pipe 21 a greater or less amount of live steam can be introduced into the condenser shell 22 a vacuum. 7

.through the pipe 15, the same taking place at the beginning of the operation and duringthe low pressure action in order, to create The condenser shell 22 is simply a short cylindrical section of pipe placed in a vertical position and provided at its upper end with an interior perforated disk or diaphragm 23. Cold water is supplied through i a pipe 34 which enters the upper end of the 7 shell 22. Pipe 34; is provided with a hand valve 33 which controls the supply of water.

7 On the side ofthe shell 22 is preferably a gage 35.,1119' condensing water falls through theperforated partition 23 and is sub-divided into a' small spray that dashes downwardly through the shell 22 and condenses whatever steammay be found therein entering through pipe 15. The water of con- 'densatio-n and the condensed steam pass together into the receiver 24, (although there may be circumstances where such receiver is dispensed with) and the water is removed I directly by means of the pipe 29 and pump 28'. W'he-nthe receiver 24; is used I preferably employ a float valve 25 therein, which i is carried by a pivoted lever 26 which operates a valve 27in the steam pipe 36, and

by this means the supply of steam is regulatedand the operation of thehpump 28 I controlled. the pump being shut down when the water level drops to a certain degree and 7 having its operation begin again when-the water level rises to the ,point where it is desirable to carry on the pumping.

.V'Vhen the system is operating with low pressure it will be evident that the valve 18 in the pipe 15 will be open, and the valve 31 will be closed. The jet condensing device will then be used whenever it is necessary by merely opening the valve 20, as I have already said, in order to allow a certain amount of live steam to enterthe shell 22. hen the system is operating'under a high steam pressure, however, any supply of steam through the pipe 21 will not be needed, and consequently the pipe 15 will be cut out by closing the valve 18 and opening the valve 31, in which case the water of condensation will all reach the condenser through the pipe 12 from the trap 17 after it has been delivered to said trap by means of the pipe 12.

I will now describe the operation of my improved high and low pressure vacuum system and point out how it is convertible from low pressure to high pressure and vice versa. Obviously, the steam which is supplied to thepipe rack through the pipe 2 may be live steam direct from the boiler or it may be exhaust steam. It will be exhaust steam during the day time when the engine is running, but at night live steam will be used. Further, the introduction of live steam into the condensing chamber 22, and the bringing of it under the action of spraying water in order to create a vacuum,

within the condenser by the shower of water falling through the perforated partition 23 will condense the steam andthereby create a vacuum, the effect of which will be felt through the whole system, and this will draw the steam, either live steam or exhaust steam, as the case may be, throughout all of the pipes of the pipe rack, and the other 1 pipes of the system. At this time obviously,

the system will be operating as a low pressure system, the valve 18 will be open, and the valve 31 in the connecting pipe 30 will be closed. After the low pressure system has operated a suflicient length of time to have the whole system properly filled, as shown by asteam gage at 36 on the pipe rack, the jet condensing device can be cut out by closing the valve 18 and opening the valve 31, and thus the. system will be changed from a low pressure to a high pressure system. Of course it can be changed back to a low pressure system whenever required. Thus I maintain the advantages of a combined high pressure and low pressure system to create the required vacuum. My system dispenses with the necessity of the vaccum pump and the expensive traps and other appurtenances commonly employed, for I am able to create all the required vacuum in a short time by the simple utilization of live steam introduced to the condenser at the beginning of the operation when the condensation takes place. The convertible character of the system from low pressure to high pressure is exceedingly valuable, for I am enabled to secure at one time all the advantages of a low pressure operation and at other times those of a high pressure operation, and I again emphasize the point of using live steam and condensing it to form a vacuum instead of using the expensive pumping systems heretofore commonly employed.

The trap 17 needs very little description because it is a well known factor insteam distribution. It is so placed that the water of condensation flows into it by gravity from the pipe 12. \Vhen the valve 19 at the top of the trap is closed the discharge from the trap is shut off and it remains so until the float within the trap at 36 becomes nearly filled from the overflow of water into it, when its weight becomes such that it overcomes the tendency of an inner discharge valve (not shown) to remain closed, being held there by steam pressure, and it drops to the bottom thereby opening a discharge valve. The valve action is purposely intermittent.

Although my invention is primarily designed for use with brick drying apparatus, yet it is evident that it has a wider application and may be easily applied to many different kinds of heaters, as, for example, the heating of houses. The introduction of a greater or less amount of steam into the con.- denser and the condensation of such steam enables the system to be operated in such a way that great economy is obtained, and simplicity and effectiveness characterize the entire system, thereby producing the best re sults in practice.

Having thus described my invention, what I claim asnew and desire to secure by Letters Patent is 1. In a heating apparatus, the combination with heating surfaces, of means for supplying steam to said surfaces, a jet condensing means, means comprising pipes for removing the water of condensation from said surfaces and carrying it to the condenser, means for admitting through one of said pipes a quantity of live steam to the condenser to be condensed therein for the purpose of creating a vacuum in the system, a trap on one of said pipes, and a receiver into which the water passes from the,

condenser, together with an automatic pump for removing the water fromthe receiver, the whole combined and arranged to operate either as a low pressureor a high .pressure system. 7

2; In a heating apparatus, the combination with radiator means, of a et condenser, pipes for leading the water of condensation into sard condenser, means for admit- 8. In a heating apparatus, the combina-' tion of a pipe rack, means comprising pipes leading to the condenser for removing the water of condensation from said rack, and means for admitting steam into the pipes of the rack, a condenser shell, means for shutting ofl one of the pipes leading from the condenser to the rack when the high pressure system is employed, means for admitting a greater or less amount of live steam into the condenser shell when the apparatus is to be operated under low pressure, and a receiver for receiving the water of condensation and the condensed steam from the condenser, means for removing water from the receiver, and means for introducing condensing water into the shell so as to condense the steam and create a vacuum.

4;. In a heating apparatus, the combination with steam distribution pipes, of a jet condensing device comprising a shell, means for admitting live steam into it, and means for condensing said live steam to create'a vacuum, the whole combined and arranged so that the utilization of the condensing device may be had when the appa ratus is operating under low pressure, means for cutting out said condensing device when the apparatus is operating'at high pressure, together with a receiver for removing the water of condensation from the condenser shell, and an automatic pump for removing the water from the receiver.

5. 'In a heating apparatus, the combination of heating surfaces, means for supplying steam thereto, a jetcondenser, pipes' leading from the heating surfaces for removing the water of condensatlon and conveying it to the condenser, a trap on one of said pipes, means for admitting live,

steam in the other'of said pipes so that it may pass into the condenser when the apparatus is to be operated under low pressure, means for introducing condensing water into the condenser so as to condense the In testimony whereof I afiix my signature steam and create a vacuum, and means for 1n presence of two Witnesses.

cutting out said condensing device when the apparatus is operating at high pressure, to- EDWARD CALLAWAY 5 gether with a receiver for receiving water WVitnesses:

from the condenser, and means for remov- JEANNETTE SToRK,

ing' Water from said receiver. L. S. PERRINE.

Copies of this patent may be obtained for five cent: each, by addressing the "Commissioner of Patent:, Washington, D. 0."

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