US2052992A - Flow restrictor for heating systems - Google Patents

Description

-v A sept..v 1,1936. 'Y W, K.v SIMPSON v l 2,052,992

FLOW RESTRICTOR FOR HEATAING SYSTEMS Original Filed July 22, 1932 muu-nnuuuummun Patented Sept. 1, 1936 :ausgestat-v FLoW :REsTRIcToR FQR- HEATING",`A

SYST

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William K: SimpsomiWaterbury; :.Conm, assigner Cnn.-,;a corporationpof Illinois.: Y original lapplicanoni-#July 22, 1932, serial-1N.

D'videdand thisf application Dccem 1" l ber-z 1T, 1934,:-.Serial N0. 757,887

This application is. a applicatio'nffonLetters:Patentfor improvement-'in Heating: systems. ledJuly 22nd, l932-,HFSeria1 N'o'.- 62'3,955. I

This invention relates to a heating system :which includes ,a plural-ity of radiators zand .za pipe; line or'conduit: system. connecting the radiators with: a boiler.'-

Infone-ppe Y steamv heating systems, especiallyu 1 those in which steamrisf supplied atrtimed inter-` vals, there is often Ytrouble in 'obtaining'. even distributionfof the heating-medium;v Y

Undercertairr conditions the. lboilerisi-inot running at its full capacity, consequently Vthe quantity --vofheating mediumisupplied is insuiricient to ll all. of. the `radiators. As -a result radiators near the. boiler are often iill'edl entirely, while those` at ,the end of thesystem contain .little `.or no heat.- ing medium.,

A furtl'iertrouble'isdue to uneven distribution of V"heating 4medium'when oil vb-urners are used. The heat of vtheioilburner is so intense that the heating -medium`is generated very rapidly; so that radiators close to the boiler fill veryr quickly.

...^Ifthe.thermostaticr regulator whichv controlsthe oil burner happens torbefin1a room-which heats quickly;v the' burner is-closed :offf prematurely, fand. the; `radiatorsrat. the 4far .end of the .system 1 will not receivetheirffull amount of heating medium.

The-object. off-my; invention iso-prevent the abovev mentioned v.objectionsf I accomplish. this byinserting'in suitable sections. .of the conduit system, port-forming partitions characterized as hereinafter stated, including ports of variable -:area,adapted.to-reducetoany desired extent the effective areaof said conduit portions, and thereby independently regulate the supply of heating medium to each radiator, so that, for example, if three radiators close to the boiler are completely filled with heating medium, a proper adjustment of the ports in said partitions will cause these radiators to be only partially heated, a suiicient quantity of the heating medium being caused to pass on to other radiators.

Of the accompanying drawing forming a part of this speciication- Figure 1 is a sectional view showing one of my improved iiow restrictors associated with a radiator-supplying conduit section.

E Figure 2 is a side view of the lead screw shown by Figure l, somewhat enlarged.

Figure 3 shows in perspective two parts of the djustable port-forming partition shown by Fig- Figure 4 is a section view showing the partition conduit section. A knob 12 Y 7'1 .claintf (ci. 13s-45) division of .my pending shown-by Figure 1, associatedwithaunion elbowaf Figure 5 is; aside Aview: on:y a 4reducedfscaleof fa: concealed radiator,A and .'thel conduit portion .sup-s' plying the latter, said. conduit. portion: including the union elbow and partitionzshown :by .Figure .4.1

Th same referencecharacters indicate. thJsame parts :in allofrthe guresw.

A -heating :system-.xtc 'which my `:invention:re-1 lates comprises a plurality of radiators andfa ccn.-;=

duit system connecting theradiators'withvaboiler. 10?:-

Included. Lin, the conduitv system =.are-.;variable' port-forming, partitions. -characterizing:they infrvention.,` Each-partitionincludes .a .iixed'ror noneI adjustable memberand adj ustablemembersmov ably connected with the. fixedI membemsaid-memr. bers being .formed to` .provideg-a:port;which:.sis; variable in area. by movement; of .the adjustabley members relative to the xedmember:

The partition shown c by :the sdrawinggin'cludes a fixed septumzxwhich lis .formed inrand intey gral with'a sectionof..thecond'uitigsystemn Said 'r section, -as shown by Figure 1, includes apore tion V45 containinga valve disk v.111, anda :xedf septum or. partition member 0f vhaving'anorice; 6I constituting the inlet controlled by the valve body. lll. Theadjustablevmember. is composed of two parts or shutters 62.' (Figure .3)1, slidable in;A opposite vdirections on 1the.;ixed:.rnember Bsto; cooperate with the orice .SIL in :forming 1a :'.vari; ableivorice `63. The shutters-$2; are provided, with ears vSli, one. having a :tapped -oriiic'ey 65,.iand1 theiother a tapped 'oriiicewlone orice having a right handpandtheother,a:left 'handthrcadl The diameter ofthe orifice isagreaterthan .that of -thefforifice 66..' Aleadscrew '61; havingfiright and left hand threaded portions 68=andr69fcorresponding with the threads of said orices, is engaged with the ears 64 so that rotation of the screw moves the shutters simultaneously toward or away from each other. One end portion of the screw is journaled in an internal bearing 10. The opposite end portion is journaled in a bearing 1|, and projects through the wall of the secured to the projecting end of the lead screw has an inner end constituting a valve tting a, recess or seat surrounding the bearing 1I, and preventing escape of iluid. 'I'he knob has a detachable screw thread connection with the projecting end of the lead screw. A washer or collar 13 fixed to the lead screw and bearing on the internal surface of the conduit section, cooperates with the knob 12 in preventing endwise movement of the lead screw. Said collar also frictionally opposes rotation of the lead screw.

The diameter of the threaded portion 69 of the lead screw is less than that of the portion Y The internal thread of the knob may be so lformed* that there will be little,

orno ance to the rotation of the knob until its inner end contacts with the bearing 1I.Y j

In practice, the shutters..62 are located below the port opening 6I and the valve disc 41 is above said opening, so that the shutters are held closely against the partition 60 partly by pres sure of the heating medium, this pressure taking up any lplay of the shutters due to. any inaccuracies of the screw and the orices 64 and 65, the direction of` flow being against the exposed surface of the shutters.

It'will be seen that the port formed by the described partition may be varied wholly by rotating the lead screw,vno separation of conduit parts being required. Y

. To adjust the shutters 62, the lead screw may rstbe turned to cause. the shutters to meet and close the orice 6I. Then With a known pitch to the threads 63 and 69, it will be possible to provide an orioe 63 of a given area byV giving the lead screw a given number of turns. For example, to set the orice for a lradiator containing forty square feet of. radiation, the lead screw may be given four turns. Y

InJFigure 4', the conduit part orsection is a union elbow elbow' 15,V4 the fixed member 60 of being betweenv theA the port-forming partition ends of the elbow. The adjustable member of Y the partition and the means for varying the areaV of the port are. as Figure 1.

described with reference to The elbow 15 may sup upper and lower grilles 18 and 19. The heat output of the radiator isv usually controlled by eiect which causes rapid condensation circulation of air is throttled down and the heat output reduced. Y

'frictional resist-V ly steam to arradiator 16, (Figure 5), concealed by a casing 11 having,

When this damper'is opened'therey is a4 high heat output. WhenY Vthe damper is closed, partly or completely, .the

Union elbows with ports, as shown in Figure 4, are preferred in radiators of the type shown by Figure 5, whereV there are no inlet valves for shutting oi the heating medium. The radiator is always lled with heating medium and its heat output is controlled by a shutter inthe back of the grille 19. When no heat is required the grille is closed, and with no appreciable circulation of air past the radiator, only a small portion of heat will be given off. With the shutter open and air 'circulating through the radiator, the heat output ofthe radiator likewise increases.

AIn concealed radiator'systems there is didi-'- cultyv in balancing dium, which difficulty is overcome by inserting the adjustable port-forming partition in the union elbow 15.

It will now be seen that the above described flow restrictor includes means for preventing displacement of the adjustable members B2 from port-varying positions, said members being movable only by rotation In a heating plant'conduit system., a flow re-V` strictor includinga conduit section provided with ofthe Vlead screw 61 which f cannotmovezendwise, so that the members A62 lup the flow of heating me-V Y an internal partition having an orifice, two ad` Y justable partition members or shutters movable only simultaneously in opposite directions Aon the internal partition to cooperate with said orifice in forming a variable port, said members vhaving ears provided with right and left tapped orices, a lead screw having right and left internal screw threads engaged with said ears, a washer fixed to the screw andbearing on the internal surface of the conduit section, said `screw having v an outer end projecting outwardly from said sec-y tion,'rand an internally threaded knob engaging an external thread on the projecting outer end of the screw, the inner end of the screw being journalled to rotate without endwise movement in a lbearing inthe conduit section, said knob constituting a valve preventing the escape off` fluid from the conduit section, and Vconstituting also a lock nut preventing acci-dental rotation of the lead screw, said washer cooperating with the knob and with said bearing in preventing'endwise movement of the lead screw so that'said shutters are movable only by rotary movement of the lead screw, and simultaneously in opposite directions.

Y WILLIAM K. SIMPSON.

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