US728782A - Combined water heater and condenser. - Google Patents

Description

PATENTED MAY 19, 1903.

W. TATE & M.-L. CABLE. A COMBINED WATER HEATER AND CONDENSER.

APPLICATION TILED SEPT. 24. 1902.

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UNITED STATES PATENT OFFICE.

Patented May 19. 1903.

WILLIAM TATE AND MARTIN L. CABLE, OF GREENSBORO, NORTH k CAROLINA.

SPECIFICATION forming part of Letters Patent No. 728,782, dated May-l9, 1903.

S I Application filed September 24, 1902. Serial No. 124,704. .(No model.). I

T0 to whom it may concern:

Be it known that we, WILLIAM TATE and MARTIN L. CABLE, citizens of the United States, and residents of'Greensboro, in .the county of Guilford-and State of North Oarolina,have 1nvented certain new and useful Improvements in a Combined Feed-Vater Heater and Condenser, of which the following is a specification.v

Our invention has for its object improved means whereby feed-water for. steam-boilers and heating. plant-s generally may be'more efiectually heated by exhaust-steam or re-;

turn water from radiator heating systems.

The invention also comprehends improved means adapted to condense exhaust-steam and the water thereof be mingled with tho feed-water as it passes alon g through to a hot-- water pump operating to force the heated feed-water into the boiler.

More specifically stated, the invention consists in a special apparatus of novel andiimproved construction, which We will now proceed to describe indetail with reference to the accompanying drawings, which form a part of this specification, and in Which Figure l is a view showing our invention in side elevation. longitudinal sectional view through the whole apparatus; and Fig. 3 is an end view, partly broken away, showing the valve at the feed end of the apparatus.

In carrying out our invention we employ a cylindrical casing or drum A, having annular flanges A at both ends, which may project inwardly, as shown, or outwardly, if so desired. head B and the other by a similar head B, both of which are secured by screw-bolts O, tapped into the flanges A; The head B is provided with a socket B, perforated and adapted to form'support for a centrally-located or inner steam-passage E, extending through an enlarged opening F in the head B. Within the drum A and around the steam pipe or passage E we arrange a cylinder G, having support at one flange A and extended through the drum A to a point just short of the far end, as shown in Fig. 2. The inner side of the head B is provided with an annular shoulder H and a reduced similar Fig. 2 is a central'vertical One end of the drum A is closed by a.

shoulder H, through which the eXit end of the steam passage or pipe E projects, leaving a space or passageway I between them. The

annular shoulder H is'arranged to project into the free end of the cylinder G, leaving a space or passage J. The outside of head B has an enlarged screw-threaded socket K, into which is screwed one end of a pipe L, in size adapted to leave an intermediate space forming a continuation of the'passage-Way'I. (See Fig. 2.) i V I M indicates the feed-water inlet into the drum A.

\Vithin the socket D on the outer side of the head B we arrange an annular rotatable flat valve N, having port-holes N, adapted to register with similar port-holes N in the head 13 audopening into the space 0 between the steam passage or ,pipe'E and the cylinder G. Any suitable means may be. utilized adapted to rotate the valveN to position providing open passage-way through the ports N N bnt'in our drawings we show a headed istem 'P, passing through the side wall of the socket D and having a right-angle pin Q extending into a suitable recess in the valve N, adapted when the stem is turned to rotate the valve, and thereby open or close the ports N N It is our idea to use the apparatus above described in connection with a hot -water pump for the purpose of heating feed-water to steam-boilers, radiator heating systems, or other similar purposes. The heating medium may be return water from radiator systems or live or exhaust steam. When steam is utilized for heating the feed-water, it is condensed within the pipe E by water flowing through the passage I.

In operation the heating medium is-passed through a suitable pipe screwed into the socketD, and the feed-water is fed through the pipe M into the drum A. If the feed-water is under pressure, the valve N should be adjusted, opening the ports N N when pressure of steam will pass into the space 0, with effect to retard passage of the cold water entering through the reduced passages J I and at the same time partially heat it. When the feed-water is under practically no pressure, the ports N N should be closed. With reduced passage J to the end of the annular shoulder H, and thence in a reverse direction through the passage I to the exit end of the pipe E, where it comes in direct contact with and-is heated to maximum degree by the main volume of steam, according to the pressure in the central passage and the force of the feed-pump.

Among the special advantages residing in our improved apparatus may be mentioned its adaptability, since it requires but little room to be used on locomotives or with steamship-boilers. It is equally adapted to be used with hot-water-heating systems in connection with the boiler feed-pump operating to keep a continual flow of hot water through the radiator system.

Having thus described our invention, What we claim as new, and desire to secure by Letters Patent, is

1. The combination with a feed-water pipe for a boiler and a feed-pump, of a combined heater and condenser consisting of a drum, a central passage or steam-pipe through the drum, a cylinder inclosing the said central passage and spaced therefrom, an opening at one end of the said cylinder communicating with reduced passages providing a reverse water circulation ending with an outlet at the discharge end of the central passage, and a Valve at the inlet end of the central passage adapted to be adjusted for opening or closing ports leading into the space between the said central passage or steam-pipe and its inclosing cylinder substantially as described.

2. The combination with a feed-water pipe for a boiler and a-feed-pump, of a combined heater and condenser employing a main receiver or drum having internal reduced waterpassages providing a back-and-forth circulation of the water, steam-passages through the drum ending at the discharge end thereof, and a valve at the inlet end of the drum adapted to be adjusted for opening and closing ports providing communication with the Water-passage next to the central steam-pipe substantially as described.

3. A combined feed-water heater and condenser consisting of a drum, an internal cylinder open at one end, a central passage through the drum, reverse reduced passages between the said central passage and the said cylinder located at the exit end of the latter, an enlarged pipe connecting the exit end of the drum and inclosing the projecting end or exit of the central passage leaving a space between them, a socket at the feed end of the drum and also an annular valve, ports closed by the said valve providing communication from the said central passage or steam-pipe into its surrounding space, and a stem passing through the side wall of the valve-inclosing socket adapted for adjusting the said valve, substantially as described.

WILLIAM TATE. MARTIN L. CABLE.

Witnesses: r

G. (J. DAVIS, G. F. OAKLEY.

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