US2002761A - Automatically controlled multiple valve for steam lines - Google Patents

Description

May 28, 1935- c. E. ARMSTRONG V2,002,761

AUTOMATICALLY CONTROLLED MULTIPLE VALVE FOR STEAM LINES May 2s, 1935. y C, E. ARMsTRoN 2,oo2,761

, AUTOMATICALLY CONTROLLED MLTIPLE VALVE FR STEAM LINES Filed Jugo 21,' 1933 2 Sheets-Shect 2 will i f wn .e J 4 v f www ff i f /Z H i g l l wwf? 1L I A l I l E- W H W 3 f Z A "m 20 j JZ 1 1f@ J, 55 5 I E 2q' y I Z6 wl Z u l N n I 5 Z4 27 Z7 'H nlll'i'lnl ull'flmh nlfm" IHHWHI i [l 4 1 A Char/es E/rmtmnq JZ 27 l g2 Inventor t menten Mey 2s, 193s. 2,002,761

UNITED sTaTEs rATENr ottici?.A

AUToMATIeAnL 1 1'1ii'tomni) MULTIPLE VALKEFQ .STEAM LINES charles n. Armste, comme, oreg., 'assigner to Armstrong Heat Control Corporation, Corvallis, Oreg., a. corporation of Oregon Application 21, 1933, Serial No. 676,884

3 Claims. (C1. 137-145) This invention relates to my United States patamount of lsteam that passes through the device. ent applications filed concurrently herewith as A further object ofmy present invention coniollows: sists in providing a. device having a plurality of Automatic time controlling devices Serial No. ported-valves disposed therein in which the orice 5 676,886, filed June 21, 1923; Improvement in of the valve may be changed from time to time. 5

thermostat controls Serial No. 676,882, filed June A further object of my invention consists in 21, 1933; and Improvements in electromechanical providing a device that may be regulated and timers Serial No. 676,885, filed June 21, 1933. controlled from a remote controlling station.

Myinvention is intended for use where a uni- A further object of my invention consists in form temperature is to be maintained within a providing a device having flanged connections 10 building and especially where steam isbeing used disposed upon its oppositely disposed ends and as the heat supplying medium. having a common center line in order that the This present invention is 'comprised of a base ilanged connections may be directly attached to having su'per'posed thereupon a body element and a steam line already placed in position.

a steam chest. The base is longer than the body A still further object of my invention consists l5 element and the steam chest and outwardly exin-so constructing the device that it may be made tends therefrom at one end. A cam shaft exto actuate valves into open or closed position. tends longitudinally of the body element and is Either or any one of the valves may be actuated Journaled relative thereto. `in either direction as is required and from a A prime mover and speed reducers rest upon remote control Station that Will predetermine the 20 the outer end of the base and the same coacts amount of steam to be passed through the device. together to drive the cam shaft at a greatly re- My invention CODSiStS in S0 COIiStruCting the duced speed. A plurality of spaced cams are device that it-may be comprised of a minimum disposed npon'the cam shaft., A valve lifter is number of parts and one that will be free from associated with each of the cams and is actuated mechanical Operating annoyances. l 25 thereby. A contact bar is superposed-over each And a still further object of my invention conof the valve litters and the same coats with and sists in so constructing and esemblilg the delifts the valve stem. A reacting element removvice that it maybe Placed in e Steam line. With ably secured to the free end of the contact bar a minimum of mechanical effort and prepara* maintains contact between the valve lifter and $1011- 30 the valve stem. With these and incidental objects in view, the

The steamchest is partitioned by a diaphragm invention consists in certain novel features of and a plurality of valves and valve seats are disconstruction and combination of parts, the esposed within the diaphragm and the valves are sential elements of which are s et forth in the ap- 85 in regista-able alignment with the cams and are pended claims, and a preferred form of embodi- 35 adapted for being actuated indirectly4 by the cams. ment Of Which is'hereinfter Shown with refer- An inlet port is disposed at one end of the ence to the drawings which accompany and form chest and communicates with the interior of the a part of this specification. chest and at one side of the diaphragm and an In the drawings:

40 outlet port is dispsed at the-opposite end of ,FlgQl 1s a side viewor the assembIed device. 40,

the steam chest and communicates with the in- Fm 21s an end view oflthe assembled dev1ce. rmr 0f the che. and at' the Opposite Side 0f Fig. 3 is a fragmentary sectional side view of the diaphragm. -Fianged connections are disthe putting diaphragm u'pon which the'mmti; posed upon the outsidev 1f thechest and at each le valves ne seted In this View is Shown one of the ports.y The ilanged connections have a p i Y- of lthe valves with an orice changing ring discommon center line. Acapisremovably secured os d therein for smtabl determmm the Size 'tothetopside ofthechest. l p e l y g' The primary object of my invention is to proof the mening thmugh which the operating uid d i4 f t t e P35595- v 5o ggg; psvsiag gerrlhrzuim? con rolling th Fig.v 4 is a top plan view of the valve bushing 5o A further object of my invention consists in and 0f the Orm controlling m13 thereproviding a device, when used in conjunction in. .j; Y with the other inventions led 'concurrently Fig. 5 is a perspective plan view of the orice herewith for regulating the temperature in a controlling ring shown removed vfrom the bush- 5 building by regulating ena predetermimng the ing.

Fig. s is a sectional side view of the body or the multiple valve.

Fig. 7 is a sectional end view of the multiple valve.

Fig. 8 is diagrammatic and shows-a fragmen-` tary sectional'side view of the diaphragm and a perspective end view of the cam shaft and cams and illustrates the manner in which the shape of the cams tends to hold the opened valves open while the others are being opened consecutively and how they are closed consecutively.

Like reference charactersrefer tolike parts throughout th`e several views.

a port 5 conducts the live steam into the steam chest compartment 6. A ange I is disposed at the oppositely disposed end of the chestand is secured to the chest Ak port 8 conducts the steam from the steam chest to a distributing pipe line secured to the flange 1. The ports 5 and 8 are coaxial with each other to facilitate the placing of the device within-a steam line. It is particularly advantageous to have these center-lines coaxial where the device is to be placed in a steam line that is already in place and erected.

A diaphragm 3 is disposed within the steam chest and partitions the chest into an inlet chamber and an outlet chamber with the port 5 directly communicating with the inlet chamber the port 8 communicating with the exhaust chamber.

A plurality of ports are.disposd within the diaphragm. The ports are preferably of different diameters and are spaced apart and the same preferably have a common center line. A cap I8 is removably secured to the top lof the chest and is secured thereto by the usual fastening means, as

Y engine bolts. A gasket I I ,is disposed between the cap andythe top of the chest. Each of the valves 1s made substantially as illustrated in Fig. 3 in lwhich a vvalve bushing I 2 is placed within the dia- Dhlagm. An annular fIange I3 outwardly extends from the upper periphery of the bushing and theY under side of the flange rests upon a shoulder I4 that is formed integral with the dia- Dhragm. An annular ledge I5 inwardly extends from the base of the bushing and the same acts as a support for an orice controlling ring I6 that is removably disposed thereupon. A valve seat I'I 1s disposed upon the inner upperv surface of the bushing and the slope atthe valve seat is made to best meet the requirements of the steam pressure upon which the same is to operate.

Valve stem guides I8 are disposed in registry ,alignment with the port openings disposed within .fthe diaphragm and the same are machined to precisely flt the base I3 of the steam chest casting. These bushings are made relatively long in order that a precise alignment may be maintained upon the valve stem. 28. The valve stem 20 has a valve head 2I disposed ,upon its upper end and the same is fashioned 'to the slope of the valve seatII upon its under surface as illustrated at 22. A stuiiing gland 23 is disposed upon the under side of the valve guide I8` and the same maintains a steam ofthe valves and valve stems and coacts with the valve stems for actuating the same. A valve lifter 28 is hingedly secured to the body element by a journal shaft 23 that runs longitudinally of the outside wall of the body element and is journaled within any suitable journal bearing 30.. A cam` roller 3l is journaledwithin-the free end of the valve lifter 28, and it rests directly upon the outer surface 32 of the cam. The free end of the valve stem engages the convex surface 32a of the cam lifter and rests directly upon the outer surface 32 of the cam. The purpose of the convex surface of the cam lifter is to provide a free and easy movement between the valve stem and lifter due to radius action.

A contactor bar 33y is hinged about a. journal pin 34 and a pin 35 is disposed within the valve stem for raising and lowering the valve. 'Ihe contacter bar terminates upon its free, end in a spring receiving hook 31 and a reacting element, as a coil spring 38 is secured upon its one end to the hook 31 and is secured upon its oppositely disposed end to a screw eye 33. Ihe purpose of the contactor bar 33 and the spring 38 is to keep the valve stem in contact with the valve lifter 28 and the cam 2l, thereby seating the valve.

A link 38 allows the perpendicular movement of the valve pin 35 so that the valve stem will remain in alignment.

A prime mover, as an electric motor 40 rests directly upon the base 2 and a speed reducer 4I is associated with the armature shaft ofthe prime mover. In order to further reduce the speed-of the prime mover, a second speed reducer 42 is driven from the shaft of the speed reducer 4 I A clutch 43 connects the driven shaft of the speed reducer 42 with the cam shaft 24. Each energization of the prime mover rotates the cam shaft for one cycle of operation which cycle is to open or close one of the valves. -f

' I have here shown four valves as beingdisposed within the deviceand fourcams disposed upon the common cam shaft. The cams are so arranged that all of the valves may be .completely open at one time or all of the valves completely closed at one time, or'so that one or more of the valves may be completely opened or one or more of the valves be completely closed at each actuation of the same by the prime mover. I do not wish, however, to be limited to four valves only, asa greater or lesser number may be required upon different classes of devices.

Condensation occurs in devices of. this kind an it is highly desirablel that the condensate be not retained withinthe device itself. To eliminate the condensate that develops within the device, I provide a thermalrelease valve 44 and pipe the same to the respective chambers.

'While the form of. mechanism herein shown and described is admirably adapted to fulfill the objects primarily stated, it is to be understood that it is not intended toconne the invention to the embodiment herein shown and described,

A as it is susceptible of embodiment in various forms, vall coming within the scope of the claims which follow.

What I claim is: l. In a device of the class described, the combination of a base, a mechanism supporting frame superposed on the base, a steam chest super'- posed on the frame, a diaphragm disposed within the chest, valves disposed inthe diaphragm, the stems extending downwardly therefrom, a cam shaft journaled relative to the frame and extend-l ing longitudinally thereof, a prime mover disposed upon the base, a speed reducer interposed between the prime mover and the cam shaft and adapted for driving the cam shaft at a reduced speed, a plurality of cams spaced apart and disposed uponthe cam shaft, a valve lifter hinged relative to the frame, the valve lifter being adapted for riding the camming surface of the cam, and engaging the lower end of the valve stem for coacting with the depending valve stem to operate the valve, a floating linkage member linked to the body element and pivotally secured to the valve stem and provided at its free end with spring anchorage means and a reactance member secured at its one end to the free end of the floating linkage member and at its other end to the frame.

2. In a device of the class described, the combination of a base, a mechanism supporting frame, a steam chest, valves within the steam chest, a cam shaft having spaced cams disposed thereupon extending longitudinally of the frame and journaled relative thereto, power means for driving the cam shaft, a valve lifter hingedlymounted relative to the body element and adapted for riding the cam, a valve stem, a pin carried speed reducer mounted upon the base, a mechanism supporting frame, a chest. a cam shaft disposed longltudinally of the body element and journaled lrelative thereto and adapted for being driven by the prime moverthrough the speed reducer, a plurality of cams spaced apart and mounted upon the cam shaft, a plurality of valves disposed within the chest and in registry with the cams of the cam shaft and adapted for being actuated thereby, a valve lifter disposed between the cam and the valve stem, a contactor bar hinged to the body element and coacting with the valve stem, and means. for normally maintaining the` contacter bar, the valve stem and the valve lifter. repressed.

CHARLES ARMSTRONG.

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