US1797096A - Heating plant - Google Patents

Description

L. LOSURE HEATING PLANT March W, 1931.

Filed Nov. 28. 1928 Patented Man. 17, 1931 UNITED STATES PATENT OFFICE LISANDER LOSURE, OF VAN BUREN, INDIANA, ASSIGNOR 0F ONE-THIRD TO DAVID E. ROLLER, OF VAN UREN, INDIANA, AND OF ONE-THIRD T0 HOMER PULLEY, 0F

MONTCPELIER, INDIANA HEATING PLANT Application filed November 28, 1928. Serial No. 322,402.

This invention relates to new and useful improvementsin heating systems, and particularly to steam heating systems.

One object of the invention is to provide a system of this character which is automatic in 1ts operation to maintain water in the heating coils in the proper amount to permit vaporization thereof.

Another object is to )rovide a device of this character wherein a alanced pressure is maintained between the steam generating coils and the radiators, for the purpose of automatically regulating the amount of water fed to the coils.

Other objects and advantages will be apparent from the following description when taken in connection with the accompanying drawing.

In the drawing:

Figure 1 is an elevation of the heating system.

Figure 2 is an enlarged vertical sectional view of the regulating valve.

Fi re 3 is an enlarged sectional view of the c eck valve leading to the heating coils.

Referring particularly to the accompanying drawing, 10 represents the shell of the steam generating furnace, within which are arranged the steam generating coils 11; The upper ends of the coils lead out through the upper end of the shell. as indicated at 12 and 13, respectively, the former being connected with the system of radiators 14, while the Patter is connected with the upper side of the tank 15 said tank being referably arranged above the level of the 00115 of the generator, as clearly seen in the drawing. The return pipe of the system is shown at 16, and connected to this pipe, and to the upper side of the tank 15, is a pipe 17, and arranged in said pipe 17, between the pipe 16 and the tank, is a check valve which opens in a direction away from the pipe 16, said check valve being shown at 18. The lower ends of the coils 11 are connected with a single pipe 22, by means of a Y-connection 23,and in this pipe 22 there is arranged a check valve 22', opening in the direction of the coils. Connected with the other end of the pipe 22, by means of the T-coupling 24, is a vertical water feeding pipe 25, the lower end of which extends below the T, and is provided with a drain cock 26, while the upper end is connected with a horizontal pipe 27, which has its other end connected with the lower portion of one end of the tank 15. At the junction of the pipes 25 and 27 is a cut-off valve 28, and in the pipe 27 is a second valve 29, which forms a part of the automatic regulator which will now be described. Between the valve 29, and the tank, a pipe 30 rises from the pipe 27, the upper end of which is connected with the lower side of the casing 31, a diaphra m 32 being arranged within said casing an having a stem 33 rising therefrom and extending through the upper side of the casing. The valve 29 is provided with an upwardly extending stem 34 which is pivotally connected with one end of the lever 35, pivotally mounted on one side of the said casing, said lever being pivotally connected, intermediate its ends, to the upper end of the diaphragm stem 33. A slidable weight 36 is mounted on the other end of the lever 35, for the purpose of increasing and decreasing the downward pressure of the lever on the diaphragm, to counteract the upward pressure of the water flowing upwardly against the di zriphragm from the tank, through the pipe 2 a The operator fills the tank 15 through the valved opening 39, leaving said valve open and then opens the vent 40, and the valve 28. The operator opens the drain cock 26, and when the water flows freely from the lower end of the pipe 25, he again closes the cock 26.

The weight 36 is set in the proper position on the lever 35 so as to resist the normal upward pressure of the water flowing from the tank through the pipe 27 such water passing down through the pipe 25, and into the coils 11, through the check valve 22. The operator then closes the valve 39 and the vent 40. A fire is now built in the furnace, and when the coils become hot the water will be vaporized and pass upwardly through the pipe 12 to the radiators. Some of the steam, and the water of condensation, from the radiators, returns to the tank 15 by way of the return pipe 16, the pipe 17, past the valve.

As the steam or vapor accumulates in the tank, a certain amount of pressure will be exerted on the water therein, so that such water is forced out of the tank, through the pipe 27 and upwardly against the diaphragm. This causes the diaphragm to rise, moving the stem 33 upwardly, with the result that the lever 35 will be rocked and the valve 29 closed to a greater degree, thus decreasing the flow of water to the pipe 25, and

' to the coils. As the steam pressure in the system, and in the tank decreases, the pressure against the diaphragm will be lessened with the result that the Weight will act to depress the lever, thereby opening the valve 29, to permit more water to pass through the pipe 25 to the coils 11. Thus water is fed to the coils in proportion to the amount of steam generated in the coils, which, of course, governs the pressure of the steam in the tank, which acts upon the water therein, to open the valve 29 to the proper degree. The pressure rarely will reach a degree which will cause the complete closing of the valve 29, so that a certain amount of water will, at all times, be present in the pipe 25.

It will be understood that the check valve 22' opens in the direction of the coils 11, so that the water in the pipe 25 opens said valve to admit water to the coils. When the water in the coils is changed to steam, the back pressure will cause the check valve to close thereby preventing entrance of water to the coils, until such time as the said steam pressure is reduced below that of the Water, when the valve will again be opened to admit water to the coils.

The presence of the regulator valve 29 serves to insure a constant supply of water in the pipe 25, but at a pressure varying in accordance with the pressure exerted on the diaphragm which controls the valve, so that at no time will the water pressure in the pipe 25 exceed the back pressure of the generator,

except to the degree suflicient to permit the proper amount of water to enter the coils.

What is claimed is:

1. In a heating system, the combination with a steam generator, of a closed receptacle for receiving water of condensation and steam from the system and delivering the water to the generator, means responsive to pressure from within the receptacle for regulating the flow of water from the receptacle to the generator and a second means between said regulating means and said generator and alternately opened by water from the receptacle and closed by steam pressure in the generator.

2. In a heating system, the combination with a steam generator, of a closed receptacle for receiving water of condensation and steam from the system and delivering the water to the generator, valved means between the receptacle and the generator and responsive to pressure in the receptacle for controlling the flow of water from the receptacle to the generator, and a valve between the generator and the valved means and alternately responsive to the hydrostatic pressure from without the generator and the steam back pressure from therewithin, for controlling the flow of water to the enerator.

3. In a heating system, t e combination with a steam generator, of a closed receptacle for receiving water of condensation and steam from the system and delivering the water to the generator, a valve between the receptacle and the generator adapted to be opened by pressure of Water from the receptacle on one side and closed by back pressure from the steam generator on the other side, alternately, and means between the receptacle and said valve and responsive to steam and water pressure from the receptacle for controlling the flow of water from the receptacle toward the valve.

4. In a heating system, the combination with a steam generator, of a closed pressure receptacle for receiving water of condensation and return steam from the system and having connection with the steam generator, a check valve in said connection movable into open position by water pressure in said connection and into closed position by back pressure from the steam generator, a control valve between the receptacle and check valve, and means operatively connected with said control valve and responsive to the Water and steam pressure in the receptacle for closing said control valve, and means for restoring the control valve into open position upon closing of the check valve.

In testimony whereof, I aflix my signature.

LISANDER LOSURE.

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