US2825360A - Tilting nozzle relay - Google Patents

Description

G. KLEE TILTING NOZZLE RELAY March 4, l195s 3 Sheets-Sheet' l' Filed March 22, 1954 March 4, 1958 G KLEE 2,825,360

TILTING NOZZLE RELAY Filed March 22, 195.4 5 sheets-shea 2 T72 ven ZLo/z1 .March 4, 1958 G. KLEE TILTING `NozzLE RELAY Ssheets-sneet s Filed March 22, 1954 La venan Ge Pa/-CZ' /fZee United States Patent@ TILTING NOZZLE RELAY Gerhard Klee, Frankfurt am Main, Germany, assigner to Samson Apparatebau Akt-Ges., Frankfurt am Main, Germany Application March 22, 1954, Serial No. 417,756

Claims priority, appiication Germany March 20, 1953 Claims. (Cl. 137-629) This invention relates to a relay for the indirect control or operation of a pressure-operated regulating device, measuring device or other device with the aid of a liquid or gaseous pressure medium the ow of which into or out of the pressure operated system of the device is controlled by nozzle-shaped valves operated by a control member or impulse emitter. The invention has for object an improvement or modification of the invention disclosed in the specification of co-pending application Serial No. 346,507 tiled April 2, i953.

According to the above-mentioned specication there is arranged in a pressure chamber of the relay a nozzle closing member which cooperates with two nozzles (an inlet nozzle and an outlet nozzle) which project into the pressure chamber and have similarly directed openings on which the closure surface of said member rests in the balanced condition of the system, whilst upon actuation by the impulse emitter it is tilted either about the opening of the outlet nozzle so as to open the inlet nozzle, or conversely about the opening of the inlet nozzle so as to open the outlet nozzle, the nozzle about the opening of which the nozzle-closing member is tilted remaining closed or substantially closed. The control movements of the impulse emitter are transmitted from an operating member disposed outside the pressure chamber to the tiltable nozzle-closing member Nithin said chamber via a swinging lever system which projects in a pressure-tight manner into the pressure chamber. The present invention makes such a relay simpler, cheaper and more economical in space. Moreover the sensitivity of the relay is to be increased, as the control forces exerted by the impulse emitter are generally weak.

According to the invention the nozzle-closure member arranged in the pressure chamber of the relay consists of a closure flap which in the balanced condition of the system rests on both openings of the inlet and outlet nozzles, this closure ap being connected by coupling means with a control shaft which is rotatable by the impulse emitter in one or other direction according to its deflecting movement, the linkage permitting, upon angular movement of the control shaft and according to the direction of deflection, lifting of the closure flap either solely from the opening of the inlet nozzle or conversely solely from the opening of the outlet nozzle, while the other nozzle remains closed or substantially closed.

The coupling means may advantageously be constructed in the form of a transverse pin joint. F or this purpose the closure ap which cooperates at one side with the nozzles may for example be rotatably mounted at the opposite side about an axle which is advantageously parallel to the surface of the nozzle openings and in turn is carried by a bearing block which is secured on the control shaft, which extends substantially at right angles to the said axle and preferably is in the same plane as the latter. The control shaft may project outwardly through a pressure-tight bearing arranged in the housing of the relay, and may be connected at the exterior with an actuating of the control shaft 1t) to theexterior.

Patented Mar. 4, 1958 f. ice

lever to which the adjusting force of the emitter is applied. It is advantageous to load the closure lap by a spring or the like which is preferably adjustable and which tends to press the ap against the openings of the inlet and outlet nozzles.

In a particularly simple and advantageous form of the invention the coupling means are formed as a spring For this purpose it is sufficient to provide, instead of the bearing block employed with the above-mentioned pin joint and the said axle, a torsion spring which is secured at its centre to the control shaft and is connected firmly at both ends with the closure ap. This torsionA spring link permits, like the transverse pin joint, a movement of the closure tlap upon an angular deection of the control shaft such that either the inlet nozzle or the outlet nozzle is open whereas in the neutral position both nozzles are kept closed by the flap.

The invention enables the size of the relay to be appreciably reduced since the coupling means require little space and lie practically in the same plane as the closure flap and the control shaft. Moreover there are only a few movable parts and places at which friction can arise, so that the relay reacts with great sensitivity to very small adjusting forces. This is of particular importance for the practical employment of such a device, since the irnpulse emitter, for example a manometer, a thermometer, a control diaphragm or the like can often exert only relatively small forces.

Some embodiments of the invention are illustrated by way of example in the accompanying drawings.

Figures l, 2 and 3 show in longitudinal section, transverse section and horizontal section respectively a relay with a transverse pin joint, Figure l being a section taken on line l-l of Fig. 3, Fig. 2 being a section taken on line lI-II and Fig. 3 being a section taken on line Ill- III all in the direction of the arrows,

Figures 4 and 5 showin cross section two different positions of deflection of the closure ap,

Figures 6, 7 and 8 show in perspective one of the closure positions, the balanced position, and the other closure position of the closure flap respectively, and

Figures 9, l0 and 1i show in longitudinal section, transverse section and horizontal section respectively arelay with a spring link, Figure 9 being a section taken on line 9-9 of Fig. l1, Fig. l0 being a section taken on line itl-10 of Fig. 1l and Fig. ll being `a section taken on line iii- 11 of Fig. 9, all in the direction of the arrows.

The relay comprises a housing l which encloses a pressure chamber 2 which is connected via a tube 3 with the pressure operated system of the device to be controlled or actuated. This may for example consist of a regulating valve adjustable by a diaphragm or a piston, a measuring instrument, a control device actuated by a resilient tube or a piston, or the like.

Into the pressure chamber 2 project two similarly directed nozzles 4 and 5 arranged at a definite distance from one another, the nozzle 4 serving as the inlet nozzle and the nozzle 5 as the outlet nozzle, or vice versa. The openings 6 and 7 of the nozzles 4 and 5 respectively can be closed one at a time or both together by the closure surface 8 of a closure ilap 9 mounted in the pressure chamber 2. The closure flap 9 is connected at the side opposite to the closure surface 8 by a coupling means with a control shaft 10 which is rotatably mounted in a bearing 11 arranged in the side wall of the housing. A sealing member, for example a rubber tube 12 drawn partly over the control shaft 10 and partly over the bearing sleeve 1l provides for pressure-tight passage On the outwardly projectingrend of the control shaft 10 may be secured a lever arm 13 to which the adjusting force of an impulse kpletely closed. Y J I Y Y Y i Ingthe preferred form Vofv theA invention illustrated inV 'bereplacedtby'equivaleutrmeans.'

ple Vbe a `manometric and thermometric measuringY apparatus, a thermostat, a oat, an electro-magnet, adiaphragm moved by any hydraulicrvor'pneutnatic adjusting inlet and; outlet nozzles 4and'5re`spectively. flfhe closure tsurfaeor surfaces'Yf-S.mayibercoizeredv withl aY-Ysoft and t Vr-In :theiforrri '.off-theinvention illustrated iin' Figures'.Y 1 toSZthefcoupling linkage is formed ais'atransverse-pin joint. The 'closure a'pi9 its mountedrrotatablyabout an faXleL: 16; which is carried by {ar-bearing4 blok17. The

Yaxle -16 :extends parallel to the nozizle openingsfj in the VVemitters is applied.Y `f-IVhis impulse emitter may for exam-hY Y Y 1 preferably resilientsealingmaterial such for example as v t Yand beingralternatively tiltable about-the ori outlet nozzle in order to open the orifice of said inletY I claim: 'Y Y 1. `Arelay comprisinga -pressure' Y chamberf awpressure g i medium inlet nozzle for said chamber,v a pressure; mediunaV Outlet nozzle for said chamber, the orifices ofY said nozzles projectingY parallel and laterally spaced from one another into the interiorpf said chamber, aY'om Y mon cl-osnrelap adapted to cooperate with said nozzles and being tiltable mounted..in/sidtlpressure'chamber, YsaidV closure tlap being TappliedVV equally lto both said orifices otjsaiclnozzles in-thejibalancedfcon n ath Y nozzleand about the gorice ofrsa'id linletmozzlein order Y Y to openutlje orifice of said Youtletlnozzle,gaeontiiolrshaft sameihor'izontal plane asthelatten' 'The U-shaped bear- 'Y ing ibloek`17isisecuredYlatf-its centrey to the 'inner-en dfof the control'shaft lil, which extends Vatiright-anglesto the axle'lrandnin the same horizontal plane as that in which'theinozzleopenings.6, 7 andtthe axle 16 lie Yin theirneutral: position. vIn-=this Lneu'tral or balamrcedrposi-V tion of the relayfsystenith'e closurellap- 9 takefsA-Yuprthe Yposition,shoWninFigures Zandfinwhich it isYpressed unj l K derV the actionl ofk the loadingfspring 1.4 Yagainst-the nozzle openingstV and .7,l so thatrboth the inlet `I iozz'leY!"and 5 theV outlet nozzle :5 fare closed. YVIn this positionYthe pres'- Vsurexnediurn Vfor examplefcompressedlair can neitherY en`VV ten norrrleavethe pressure chamberY 2, nandthereforeftheV pressure 'systempcommunicating' With-it.'` fCNon'sequentlyV Y noYY adjustment Yof Y the'ass'ociated Vre If. thejcontrolrrs'haftll is'turedrby the impulseernitter Vvia lever arm 131intone directionfor-the-otheriYthe bearf 'lng block17vsecured tothe control shaftY 1.0 takesthe u gulating orineasuring Y device or' the like can take place. Y Y' Y Ytclosurejrap along with it by the action of the axle-16V.

Thisfclosure fiap9 can however.only-followYtheYangular4 movement by'executing a tilting rnovfern'entl about the 'axlelo,zso .that its closure surface 8 eitherVV rests on the;

outletV nozzle 5 as shownrinFigures 4 Vand -7 and frees I theinlet nozzle 4,"or rests on the inlet nozzleV and 'opens Y the outlet' nozzle 5 as :shown in Figures 5` and y8. YInYtheV rst case pressure mediumowsuthroughjlthe-inlet-nozsurelin the system,wherea s'inrthe latter pressure medium Y zle,4 Yinto' the ypressure chamberZ and increases the'Ypres- Y ows, out ,of the pressure chamber `through the-outlet: u

nozzle VSiuso thatthe pressure in the systemis reduced;

TheothernoZZle, i. eztherone on 'which the closurepflap 9iis'fsupported,'remains completely or substantially Ycom- Figures Y9 to ll there is inserted'betweenitheYclosure Yfiap 9 and the control shaft 14) a -springYlink For example-a 1j.' The tWoYends of the torsion Y,spring 1`8aresecured toYtworilateral projections '19jof the. cl'osureapj9j. 'jlfhis torsion spring '1S *preferablyVY consistsvrofV afflat'leaf springYV which is so` stijf 'thatupon angular y'moverrrent V-ofthel control shaft ltlit Y*does not bend, only Ythe 'central part fof ffthe spring beingmove'darigularlyV to some extent;vv'ithref` Y AspeCtito itsYen'dsfForfthe rest, the torsion'spring 5 1 8 29E- cratesY in the.sarne-Yway as the previously describedtraust.

t torsion Yspring `i8 isY secured at its centreto YtheYcontrol j shaft 219 insteadrof the above-mentioned bearing'jblock versefpiu jpintjsogthat,furtherrexplanationgof ts. function- Y ing is unnecessarygf YY Y Itfwllbe'understood 'thats'theinventionjisniot limited Y "to the constructions r,describeslland. illustrated, but uin-V Veludes all l,en'rb'odiinents ,Which'are within 'the'scope ofthe invention."Y'For'eXainple the'gclosuredlap..mayzhavezrav Y f with said controlshaft-b VVAanglestofsaid controlfshafrt of said-joosureV-llairunder t Y action ofranangular.movement @fsa-id pcontrolshaA Y ulink comprisesya torsionzspring v Wh t Y centrato saidcontrolshvftand a itsenclst for actuating said closure ilap, said contolsh'aff 'being rotatable mounted about axist'iextending substantially at right Vangles toYsaid nozzles and substantially parallel YY to the tiltingaxis of said closure flap, said closure liap Y -2..Y A relay comprising LYa pressure chambergia pressure .medium inlet nozzle forsaidfchamber, aapresVsure'rne'dium joutlet nojzzlef'tor saidcharnber, the, orices'roffs'aid nozzles projecting parallel and laterally spaced-from ones-:another Yintother interior; f ofv, said chamber, al-common; closurerap adaptedtooooperatewiththeoriiicesofsaidnozzlesfandi i' ble -j mounted said'` pressureV chamber, sai-d and beingalternatively .,tiltable'gabout the :.oriiiceof aid outlet nozzle in vorder togopen ithe oriiice of ,said zlrlet nozzle :and aboutthe oricefof Vsaid inletl-Ynozzle :iV

OrderV yal Vcontro haft to Vopenlthe orifice' of said outlet nozzl Vfor'actuatingl said closureap, saidoontrolshaftibeingfro l fatable 21.50371? an' aXiS extending.-subtauiallyfatriahtialigles to said nozzles and substantially parallel `tilting `axis ofsaidclosureV hap,` said closure flap enig lo, ected Y f ,sans offgafsm to allowa sixnultameous1r ltingrmovernent *movement about an .axisfextending substa Y3;,A relaylassetgforlh inrelaim 2r,

saidclosur'e llap remote Jfrom the thereofr t, u* l YY Y ,i l ,4. A relay asset frthin, claim z3,1Whereinlthe enrdsfofV Vsaid torsion spring are connectedf'totwojlateralgprojec-'t i tionsA of isaidcl-osurea'p. Y Y o Y* Y '5."A,relay Vas set Aforth in'clai'mZ, wherein saidspringf linkl comprises` a flat torsion leaf; spring Which-is. so .stii

Y that upon angular'movementV-of-saidrQcontrolsltaft Y occurs no `bending [of said leaf kspring Vbutuonly angular movementfof the'kcentre of the springv relativeftoitheends l thereof. Y f Y Y Y Y Y,

s 6.A`re1ay as s et "ffrthin claim i, wherein-'Said trassl verse' coupling link `comprises a transverse;pin'joint,Y Y

"7.' A'relay asset fo'rthinclaini 6, Ywherein Vsaid closure apis mounted; at the-iside ,opposite to the-closures'u face'side thereof; *for angular rnoyementjabout k'arfrijaivXle t Y beingapp1id egua11yremota-saidforistasj L ofgsaidV nozzlesfjin fthe-balanced conditionofY-e the trelay tr'olssharft,vr said axlefb'einrgksubstantially at y,right anglesto'lr.

said Ycontrol shaft.Y

y 8. Ajrjrelayas set'ffo'rthilnrcllaim lpwherein thelclosiire Y' surface ofYYs'ai-dap isicovered'-withresilientgni t rial.`

Y being connected: '-with fan actuat'iisig'member?adapted'stol` apply-'tuant-adjustingforce; j Y zY 6. 10. A relay as set forth in claim 1, wherein said closure 2,274,917 Carlson Mar. 3, 1942 ap is loaded by spring means tending to press the ap 2,354,814 Joesting Aug. 1, 1944 against the orifices of said nozzles. FOREIGN PATENTS References Cited in the le of this patent 5 618,545 Great Britain 1949 UNITED STATES PATENTS 1,148,779 Jackson Aug. 3, 1915

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