US1371250A

US1371250A - Combined water-heater and condenser

Info

Publication number: US1371250A
Application number: US237380A
Authority: US
Inventors: Frederick J Larkworthy
Original assignee: Individual
Current assignee: Individual
Priority date: 1918-05-31
Filing date: 1918-05-31
Publication date: 1921-03-15
Anticipated expiration: 1938-03-15

Description

F. J. LARKWORTHY. COMBINED WATER HEATER AND CONDENSER.

APPLICATION FILED MAYSI, 1918.

L I w w A w E. Z r. T1 m J M um n u m 1% P W r jTTOENEYU. Q7

al H

- UNITED STATES PATENT OFFICE.

COMBINED WATER-,HEATER AND CONDENSER.

Specification of Letters Patent.

Patented Mar. 15, 1921.

I Application filed May 31, 1918. Serial 110. 237,380.

T 0 all whom it may concern:

Be it known that I, FREDERICK J. LARK- woRrHY, a citizenof the United States, and a resident of Cleveland, county of Guyahoga, and State of Ohio, have invented a new and useful Improvement in Combined lVater-Heaters and Condensers, of which the following is a specification,the principle of the invention being herein explained and the best mode in which I have contemplated applying that principle, so as to distinguish it from other inventions.

The present invention relates to a combined water heater and condenser in which provision is made for condensing exhaust steam and at the same time heating the water to be fed to the boilers, and means are also provided for passing the steam through a water spray so that it is entirely condensed and the heated water passed out to the boiler. Other means are provided for regulating the amount. of water so that only sufficient water will be used to condense the steam, thus heating the water to the highest possible point before feeding it into the boiler. I have also provided means for taking the heated water out of the condenser without mixing the same with the exhaust steam, so that clear water can be obtained when desired. To the accomplishment of the foregoing and related ends, said invention, then, consists of the means hereinafter fully described and particularly pointed out in the claims. I

The annexed drawing and the following description set forth in detail certain mechanism embodying the invention, such disclosed means constituting, however, but one of various mechanical forms in which the principle of the invention may be used.

In said annexed drawing Figure 1 isa sectional view through the condenser showing the lay-out of the device; Fig. 2 1S an enlarged section taken on the line 22 Fig. 1; and Fig. 3 is a section taken on the line 3-3 Fig. 1;

As shown, the condenser consists of two lengths of double pipe, it being of course understood that the number'of lengths of pipe will be varied to suit conditions. The outer pipe or casing 1 is provided at the inlet end with a Y 2, which isthreaded onto the pipe and which has a bushing 3 threaded into its outer end. Within this bushing, a nipple 4 is fitted, through which is mounted. the water pipe 5, a cap .6 being mounted over the pipe and having threaded engagement with the outer end of the bushing to hold the packing I suitable pipe connection (not shown) being employed.

At its rear end, the steam casing is provided with a T 17 and packing joint for the water pipe similar to the joint at its inlet end, the water pipe passing t'herethrough and being connected by elbows 10 and a union 11 to the water pipe 12 in the second steam casing. 13. The two steam casings are connected by pipes 14 and a union 15, the pipes being threaded into the leads 16 ofthe two Ts 17.

The joints provide expansion means between the two pipes and casings and are similar to the joint at the inlet end. To prevent the water pipe from sagging, the steam casing is preferably formed of two lengths of pipe and a T 18 is provided between the two lengths, the small outlet 19 of the T having a cap 20. A short piece of pipe 21 is fitted in such outlet 19 and supported by the cap, the upper end of said pipe being split to receive and support the water pipes 5 and 12, as best shown in Fig. 3.

Near the outlet of the condenser, the water pipe is provided with a T 22, which receives a pipe 23 extending through a packing box 24 in a T 40 mounted in the steam-casing.

' This pipe 23 is provided with a valve 25 outside of the steam casing.

At the outlet end, the steam casing is provided with a T cap 26 having an outlet pipe 27 with a valve 28 therein. In the outer end of the cap 26, a bushing 32 is mounted, which has a cap 33 threaded on its outer end forming a packed joint about the extending portion ofthe water pipe 12. A valve is mounted in this pipe 12, the valve cap 40 having threaded engagement with the pipe and the valve stem 41 having threaded engagement with the cap, as best shown in Fig. 2. This valve is provided with the usual handle 29 and a piston valve preferably- 0f brass 30 mounted within the water pipe 12 which from the T 22 to the valve is preferably of brass or bronze. The water pipe adjacent the valve has a series of small apertures 31, these preferably being inclined so as to throw the water forwardly against the steam casing. The apertures are formed in circles, the apertures of each circle being set at an angle to those of the preceding circle. One satisfactory arrangement has been two rows or circles of four apertures and then three circles of six apertures and three circles of eight apertures. By means of the valve piston 80, the number of apertures which are open may be varied to give the correct amount of spray necessary to condense the steam.

When the device is used as a combined surface and jet condenser and feed water heater for boilers, the valve will be closed and the valve 28'will be open, the piston valve 30 beingadjusted to the point where the steam in the casing will just be condensed when it has passed through the spray. When a full head of steam is used, the piston 30 will be withdrawn, allowing the water to spray out of all of the apertures in the pipe, but when a less amount of steam-isto be condensed, the piston 30 willbe moved forwardly,'cutting down the length of the spray to the amount necessary to condense the steam. If the device is to be used merely as a surface water heater or steam condenser, or when clear hot water 'is desired, then the piston valve 30 will be moved forwardly to close the pipe ahead of the apertures and the valve 25 will be opened, the heated water passing out through the pipe 23 and the condensate and any excess steam exhausting between the va ve 28 and the pipe 27. When acting in this way, the water taken from the pipe 23 will be erfectly clear and will not be mixed at all with any of the steam.

By inclining the apertures 31 forwardly, the water is forced out of the pipe in apear-shaped spray, the pressure being sufficient to force the spray against the inner wall of the steam casing, thus making a complete water seal, so thatno steam can pass the same without being condensed. The device is adapted to be used with ordinary city water pressure in the water pipe, the apertures being of the correct size so that when all are open, the water'pressure is sufiicient to give a spray from each aperture which will strike the inner wall of the steam casing. Thus by regulating the piston valve, the amount of Water used-can be regulated, the length ofthe spray being changed to suit conditions.

As shown in the drawings, the first steam casing 1 will be preferably a 3 pipe or "tube, the water pipe being an inch in di-.

ameter, while the second casing 13 is shown as a 2 pipe with a l water pipe running therethrough. These particular ratios are not essential, but the steam casin hould be large enough at the beginning so that the steam will pass readily therethrough without putting any back pressure on the steam line and thus on the engine or other apparatus. As it passes through the casing, the steam will become more and more condensed and thus the necessity for the large pipe grows less and this makes it possible to use a smaller steam casing on the second or succeeding lines.

By the present device, I have been able to use steam to preheat thewater for the boilers, at the same time'varying the amount of water which is to be heated, so that'it will be fed to the boiler at the highest possible temperature. A perfect water seal is obtained, the length of the spray being changed with variationsin the amount of steam passing through the condenser. I have also provided means forobtaining hot water from the device when desired, this water being clear and not being contaminated by the exhaust steam. The use of the regulating valve, together with apertures V which form the pear-shaped spray, gives a haust steam is used as theheating medium.

Other modes of applying the'principle of my invention may be employed instead of Tthe one explained, change being made as regards the mechamsmherem d1sclosed,pr0-

vided themeans stated by an of the following claims or the equiva ent of such stated means be employed.

I therefore particularly point out and dis tinctl claim as my invention 1. fll a condenser and water heater the combinationof a steam casing and inlet and outlet openings at its ends, a water pipe mounted within said casing and extending outwardly of the same, packed joints between said casing and said pipe, said water pipe being provided near the outlet end with forwardly inclined apertures adapted to form a pear-shaped water spray against the lnterlor of said casing, said apertures being 7 arranged in circles around said pipe, the number of apertures per 011K318 ncreasing toward the outlet. end of said pipe, a piston valve mounted in said pipe and adapted to close such apertures, and a valve controlled water outlet pipe mounted through said casing and connected with said water pipe in front of said apertures.

,2.-In a condenserand water heater the combinationv o fa steam casing and inlet and outlet openings at its ends, a water pipe mounted within said casing and extending outwardly of the same, packed joints between said casing and said pipe, said water pipe being provided near the outlet end with forwardly inclined apertures adapted to form a pear-shaped water spray against the interior of said casing, said apertures being arranged in circles around said pipe the 10 number of apertures per circle increasing toward the outlet end of said pipe, a piston Valve mounted in said pipe and adapted to close such apertures, a water outlet pipe connected to said water pipe and passing through said steam casing, a Valve in said outlet pipe mounted exteriorly of said casing to control the flow of water therethrough.

Signed bme, this 24th da of May, 1918. FRED RICK .J. LAB WORTHY.