US1085717A - Vapor-heating system. - Google Patents

Description

2 SHIRTS-SHEET l.

Patented Feb. 3

NH H H H I H HE H H H HTUBH JH H UH H H E. O. WILEY. VAPOR HEATING SYSTEM.

APPLICATION FILED JUNE25, 1912.

Y E N R O T T A I l \NVENTOR VVITNESSES- E. U. WILEY.

VAPOR HEATING SYSTEM. APPLICATION FILED JUNE 25, 1912.

1,085;717. Patentd Feb. 3, 1914.

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. WlTNESSES ATTO RN EY I sale EDGAR G. WILEY, F LYNCHB'UBG, VIRGINIA.

VAPDEL-i-JZEATING svsrsie.

Specification of Letters Patent.

Patented Feb. 3,1914.

Application filed June 25, 1912, Serial 1E0. 29,5387.

To all whom it mag/concern Be it known that I, EDGAR O. WILEY,

following is a specification.

The inventionrelates to vapor heating systems.

jurious results.

" 9 The'invention also has for its object to provide means for permitting'air, when the steam pressure subsides, to enter the return pipes and the fioat.'chamher to prevent the vacuum resulting from the sealing of the system from drawing the water and air down. through the float chamber and setting up considerable agitation.

With these and other objects in view,the invention consists in the construction and novel combination of parts hereinafter fully described, illustrated in the accompanying vention.

In the drawingsz+lfirnire 1 is a side eleimprovements in The object of the present invention is to improve the constructionrof"vapor heating systems, and to'provide a simple, eflicicnt and comparatively inexpensive automatic damper or draft regulator, designed particularly for use in residences and comparatively small buildings, and equipped with a check valve/for preventing the boiler pressure from forcing water back into the return pipes, and provided with an air vent valve positively controlled by th action of the regulator to enable air to exhaust or escapofrom the return pipes without permitting .ivater to be discharged through the vent opening, whereby damaging discharge of water from the boiler through either the vent or, the return line is entirely eliminated, and at the same time making it possible to carry several pounds of pressure without indrawings, and pointed out in the claims hereto appended; it being understood that various changes in the form, proportion, size and minor details of construction, within the scope otthe claims, may heresorted tov without departing from the spirit oar-sacrificing any of the advantages of the ini v o i l s c I 1. horizontal sectional vlew on the line 3-3 01 v I a Fig. 2. Fig. 4 is an enlarged sectional view, citizen of the; United States, residing at Lynchburg, in-the. county of Campbell and a State of Virginia, have, invented anew and useful Vapor-Heating ystem, of which the illustrating the construction of the vent valve and its casing. Fig. 5 isa detail plan view of the vent valve.

Like'numerals of reference designate corresponding parts in all the'figures of the drawings. Y

In the accompanying drawings in which is illustrated the preferred embodiment of do the invention, 1, designates a receiver having a float chamber 2 and provided at the top and bottom thereof with threaded openings 3 and 4c- The main return pipe 5 of the vapor system is threaded into the upper opening, and the lower opening receives the upper threaded end of a pipe 6, which connects the receiver with the boiler 7. The receiver may be of any preferred construction and it contains a suitable float 8, secured to an arm 9 of a horizontal shaft 10, which extends outwardly through a stuffing box 11.

The inner portion 12 of the shaft is squared, and the arm is provided with an opening 13 rectangular in cross section to condor-m to the configuration-of the squaredinner portion of the shaft 10. The shaft is equipped with a lever 14, secured at an intermediate point to the outer end of the said shaft and having its arms connected by chains 15 and 16 with dampers 17 and @18 of the ash door and the smoke pipe. The chains 15 and 16 are guided by pulleys 15 and 16?, or other suitable means, and the dampers 17 and 18 operate in the usual manner to produce a draft and to check the same. The main return pipe 5 is equipped with a hinged check valve 19, mounted in asuitable casing 20, which is provided with a valved seat 21, arranged at an inclination. The casing ofthe check valve is arranged in a horizontal position in a horizontal portion of the main return pipe, and it is provided at its ends with opposite threaded openings to receive sections of the pipes, and it also has a threaded opening 22in its top normally closed by a screw plug 23, which is adapted to be removed to afford access to the valve.- The valve, which is hinged at the top, is adapted to be readily opened to permit the passage vation of an automatic damper or din-it reg-0f water to the boiler, and it closes autoulator, constructed inaccordance with this invention, "'andashown applied to a vapor system: Fig. 2 is an enlarged vertical sec;

.Fig. 3 is a tional viewol the regulator.

.matically to prevent water from being forced into the return pipe by looiler pressure. The receiver 1 is also provided at its top with'a threaded opening 24: for there its ception of the lower threaded end25 of a vertical casing 26 of a double seated vent valve 27. The easirw 26 is provided at a point intermediate of its-ends with spaced upper and lower valve seats 28 and 29, and the valve 27 is provided with upper and lower eoacting portions 30 and 31, and is movable upwardly by the float to seat the said portions 30 and 31, whieh seals the system and prevents water from being discharged through the vent opening. The lower end of the vent valve is connected by a suitable pivot 32 to the upperend of the connecting rod 33, which is connected at its lower end with the float actuated arm 9 by a section or coupling piece 34. The section or coupling piece 34 is pivoted at itslowe-r end by a screw 35, or other suitable fastening device to the float actuated arm 9, which is provided adjacent to the shaft lO with a slot 36 into which the coupling piece 34 eX-. tends. The coupling piece. is provided with 'a. threaded socket 37 and the lower end 38 of the connecting rod 33 is threaded to en gage the socket. The upper end of the vent valve is provided with a groove "39,- adapted to receive the blade of-a screw driver, and the threaded adjustment at the lower end of the rod 33 enables the connection between the vent valve and the arm 9 to be varied in length, and permits the vent valve to be adjusted so as to properly engage the seats of the valve casing 26. In practice the valve is adjusted so as to seat itselfv just before the float-reaches the top of the float chamber. The valve casing 26 is provided atthe top with a threaded opening 40 normally closed by a screw plug 41, which is adapted to be removed to afford access to the vent valve. The vent valve is'provided with longitudinal wings or flanges 42, and it is held against rotary movement by means of a horizontal screw 43, mounted in a threaded perforation of the valve casing 26 and having a pointed inner end, which extends between'two of the wings or flanges of the vent valve. The screw, which prevents rotary. movement of the vent valve, does not interfere with the upward and downward movement of the same through the action of the float.

The casing QtS-of the vent valve is provided above the upper valve seat with a horizontal opening 44 threaded to receive an arm 45 of a vertical vent pipe 46, which extends to a point near the floor for the discharge of any water, which might leak past the vent valve. The vent pipe may be connected with a drain pipe for carrying off such water to a sewer or other suitable point. The valve casing 26 is also provided at a point between the valve seats with a threaded opening 47 to receive one' nd of a bypass pipe 48, which extends adjacent the main return pipe and its other end is connected tothe main return pipe at a point beyond the check valve, as clearly illustrated in Fig.- 1 of the drawings, in order to permitair to escape freely from the main return pipe to the vent valve casing without passing through the check valve casing.

The by-pass pipe communicates with the hen the boiler is fired up and a slight steam pressure is raised, steam flows out through the main steam pipe 50 through a radiatorf pipe connection 51 and an adjust able controlled valve 52 into tlife radiator 53.

The air and condensation from the radiator "ill lie discharged through a return ,pi o

connection into the return line where t e air will flow through the by-pass p pe or connection and through the vent valve casing enterin at the'o enin 47"anddischar 9 ing at the opening 44, the float at this time being at the bottom of the 'valve chamber 2.

The water will return to the float chamber through the check valve casing and will descend to the boiler. As the pressure rises within the boiler, the'water will be forced to a higher level within the float chamber than that maintained in the boiler by reason of the fact that the float chamber is open to the atmosphere through the vent valve. This elevation of water due to the-pressure in the boiler will raise the float and operate the damper so as to control the draft to the boiler and thereby prevent a-further rise in the pressure.

One of the principal difiiculties with vapor heating plants has been-that when through some 'accident'to the dampers or failure of the dampers to properly check the fire, as is often the case when the attendant leaves the ash door, which carries the draft damper, open, water is forced through the vent open ings in such quantities as to deplete the supply and cause destruction ofthe boiler. This is impossible with the present invention. which by sealing the system not-only-pre vents a dangerous discharge of water but also enables the system to carry several pounds of pressure without any discharge of water or other injurious results. The check valve prevents water from being forced through the float chamber into the' return pipes by a sudden rise in the pres sure, which would endanger the boiler by removing too 'much water in a short space of time before the pressure in the return line has had time to equalize with the pressure in the boiler, which it will do in a short time. With the check valve installed in the main returnpipe, air cannot reenter the piping system from the receiver, and when the steam pressure has subsided after a rise, a vacuum would becreated in the boiler and piping if the by-pass pipe were not provided to admit air to'the return pipe. If this provision were not'made such a vacuum in a boiler would draw thewater down through the float chamber andset up considerable agitation by also drawing air through the said channel. r 7

What is claimed is 1. In a heating system of the class described, the combination with a boiler, a return pipe provided with a check valve, a receiver connected with the return pipe and with the boiler and having a float chamber, an arm mounted within the float chamber and provided with a float, a vent valve casing communicating with the float chamber, a vent valve operating within the valve casing and co iected with the said arm and actuated by the same, and a by-pass pipe' communicating with the valve casing at a point on the discharge side of the vent valve and with the return'pipe on the system side of the check valve.

2. In a heating system of the class described, the combination of a boiler, a return pipe having a check valve, a receiver connected with the return pipe and with the boiler, an arm mounted within the receiver a and provided with a float, a vent valve casing communicating with the receiver, a vent valveoperating within the valve casing and connected with the said arm and actuated a vent pipe connected with the at a point beyond the vent valve casing by-pass p1pe communicating valve, and a with the valve casing at a point on the discharge side of the vent valve and with the in its rotaryadjustment.

return pipe on the system side of the check valve.

3. In a heating system of the class described, the combination of a boiler, a return pipe provided with a-check valve, a receiver 59 connected with the return pipe and with the boiler, a float actuated arm mountet' 'ithin the receiver, a vent valve casing communicating with the receiver and provided with spaced valve seats, a vent valve operating in the casing and having spaced portions coacting with the said seats, connections between the vent valve and the said arm, and

aby-pass pipe communicating with the val e casing at a the return p1pe on the 4. In a heating system of the class depoint between the said ,60 valve seats and with system side of the check valve:

actuated arm operating within thereceiver,

a vent .valve casing mounted upon the re;

ceiver and provided in its top with an open 1119; and having upper and lower valve seats alined with the said opening, movable vent valve operating in casing and provided with spaced upper and lower portions to and having vertical wings or flanges located,

a vertically between the said spaced portions, meahs for connecting the vent valve with the float actuated arm, said means including an adjustable conneetion operable by a rotary move'-.

ment of the vcntvalve, and a screw piercing the valve casing at a point between they coact with the valve seats the valve 70 spaced upper and lower portions of the vent valve and engaging flanges thereof for retaining the vent valve In testimony, thatI claim the foregoing asmy own, I have hereto afiixed my signa- '85 GnAon' H. MAHooDi between the vertical i

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