US1457121A - Turbine or centrifugal vacuum pump device - Google Patents

Description

May "29, 1923. 1,457,121

' J. D. MUDGE TURBINE 0R CENTRIFUGAL VACUUM PUMP DEVICE Fied 000. 12 1919 a nomto'c #122126 AZ. Mag 9e Gite anus wmra Patented May 29, 1923.

' lTED TEES "PAT EN r r ce.

JAMES 1). MUDGEQOIESEATTLE, wAsHmeTomnmQ rs; munenamvrrnrsraa rarx or will have if SAID JAMES DEMU GE, DEQEASED."

To-:aBrNnoa CENIRIFUGAL VACUUM ruivrr nnvron? I I Application filed 0ct0bcr113,. 1919.:. Serial name.

To all wko m tt mdy co hce rn: I Belit known that'I, JAMES D. MUDcE',;a

citizen ofthe United States residing at Seattle, inthe ,county of King a and State of Washington, have invented alcertain new and useful Turbine or Centrifugal Vacuum Pump ;D.evice,--.ofwhichi'the following 1s a specification. 5 My invention relates -to theart of turbine. or centrifugal vacuum. pumps and more particularly pertains to the automaticallymaintaining ofthe constant seal for the suction openings in-the runners of said My j invention will befdescribed for purposes of. illustration asapplied in. a, vacuum heating system, but it is not to be limited in its scope to any. such specialapplication. Indevices asheretoforedesigned for sa d purposes objection 'obtainsin] that said pumps become choked on account of the lack of flexibility orrange ofoperation, or saidpumps are defective in not having a sufiicient supply of liquidat all times present to properlyseal the suction openings.

These objections pertain especially to centrifugal pumps used in said connection. In the case ofreciprocal-pumps ser1ous ob ection obtains to the great vibration .and

noise developed therefrom and 1 these .fea- 1 tures are particularly to be avoided in heating systemsfor {buildings or, dwellings. Such vacuum pumps. used in connection with heating systems mustbe capable. at times of' discharginga quantity of water relatively. large as compared to the .normal discharge, which wide range of discharge; is made imperativeat'timeswhen a largecon densation. of steam takesplace thruout the heating system. It is essential that. the

runner openings of the centrifugal pump meralsindicate like I above mentionedgeneralhobjects my'invention, together with others inherent.

in the same-are obtained by the mechanism illustrated same-being merely a preferred exemplary Iform 'ofembodiment offmv invention,

in the following drawingsyythe,

thruoutwhich drawings likereferencanu- F1gure l, a view in verticalsection.

F 2, ;is a'jview section on line2, 2ofz centrifugal turbine pump 3 has afldisand valve being surrounded'by. the di schargeichamber 6, having a. vapor or gas relief valve 37 near its top, which-valve is float operated. A receiving tank 8 .isconnectedtosaid discharge chain be r by means of the conne'ctingpipe 9 havopening, in the receiving tank at v 11.- An outlet pipe 12,the.. -inlet of which is prefer ably positionedabove the floor. ceiving tank, .is ;-pro vided for said tank and discharge pipe non-condensable charge pipe 4, in the top of which. discharge pipe is a check valve-5, said lng the check valve 1'0, said connecting pipe maycommunicateeithery with a sewer or with a. boiler feed l1ne,-;.a--pu1np 13;being connected tosaid discharge or outlet pipe to act upon the liquid. in said pipe 121 A valvelet .in-said discharge oroutlet pipe l1ne 12 serves to. maintain the reduced pres- CGlViIIgQtaDk -S. A second; outlet pipe 15 extends from,saidf'receiving tank {8 to -the' pump 3 Said second. outlet pipel5 is'preftion 16. and ,said outlet portion; is preferably sure ,conditionabove the liquid injthe ire- I erably provided. with a reduced outlet POI":

disposed, within a returnpipe 17,1onythe same, of the-receiving tank. l Acheckvalve 1 8 is or near the -same level'with the floor 1 provided within said second outlet pipe-15. ipe 19 .establlshes communication; between the, return tank 8. '1

' l The operation of.: rny device is as follows:

or inlet pipe 17 and thefreceiving. l

Gases, liquidsand' non-condensable vapors "enter the device thru-theQreturn pipe[1-7 that enters the pump- 3, which inturndischarges the same 'thru; the discharge pipe ife cing open; thecheckvalve '5- and cansing, said liquids,v gases, and non-condensable "vapors to accumulate within the, discharge chamber pressurexof the liquid becomes. so {great that er e 'b 'l i s r n e f-wei h Ope d 6: until. such. a.;ti me.asthe 1 check valve lficausing the-liquidsto flaw intot'he receiving't'alik 8. The "air, non-concondensable vapors and gases, escape from :t-he disch"-arge chamber :6 when the liquids fill the discharge chamber'8to sucha level that the float relief valveis unseated by said liquids. -7 7 As said pump 3 operates, it produces a partial vacuum in the ret'urii-or inlet P pe 17, thereby aiding the force of gravity to cause all liquids conta-ined therein to descend and said liquids thereby normallyfiunction to seal the suction openings inthe runners ofthe vacuum pump 3 However when the level'oft'he liquids in the return pipe '17 falls lie'loiv the level of theliqiiid'siii the receiving 'taiik"8,-'the liquids in there'ceiving tank are caused to flow thruthie sec'ondoutlet pipers to maintain the supply of liquid as a seal for pump 3, thereby the liquids in the receiving tank constitute a reserve supply'to 'f'uhctionas a seal for thepurhp'. Whenever thesup'ply by condensation is inadequate for such purposes, a check valve 18 manifestly prevents the liquid from reaching theiecei-V- ing tan'k 8 by means o'f pipe 15. 'Conrrecting pipe 19 maintains the sa1ne'air pre'ssure or degree of vacuum in'th'e receiving tank as obtainsin the returner inlet pipe 17, so that the liquid contained fvv'i'thin the receiving tank is'fre'e to'seek its level withinsaid pipe 17 so far as the pressures 'obtainingin'said pipe 1 and the said receiving tank 8 are concerned. v

The function of pump 13 is-t'o pumpth'e liquid from the outlet or discharge pipe 12. This pumping being obviously necessary in 'v'ierv of the fact that the pressure en the liquid at the end of the outlet pipe 12 is at least equal to that of the atmosphere, While the-pressure abovethe liquid in "theTece'iV ing tank's is very 10w, being a 'par'ti'al vacuum equalto that in the return pipe 17 Check valve 14 serves "to maintain the reduced ressure condition in the receiving tank 8. Pipe'QOISerVe's to draW- oiiany air that may accumulate in 'thepipe'9. I

Obviously changes may bem'ade in the forms, dimensions, and arrangement of the parts of my invention Without "departing from' the 'prinoiplethereof, the abovesetti'n'g forth only a referred form oi' embddinient.

'I claim:

1. A device of the class described embodying an inlet 'or return pipe, av 'ciuun pum tie pump fluids and liquids out 0i said return pi'pe, a 'discharge pipe for" 'saidpump, a check valve in said discharge pipe, 2 dischar e chamber "encldsin g "the "outlet 'ofl's'aii'd discharge pipe, a vap'e'r or as relief valve for said-discharge chamber, a receiving "tank, a connecting pip-e between said discharg chamber and said receivin taiik, 'a fch'eck valve in said ebnnefi irg pip a nutlet it for "said fete-Wing tank, "se'cen'd pufiip to act upon the liquids iii said-outlet pipe, a check valve in the discharge outlet'ot said last named pump, a second outlet pipe for said receiving tank connecting said receiving tank and: said first named pump, and a pressure ad ust1ng pipe connecting said 111- iet or 'r'etuzcn ipipe =and said receiving tank.

2. A device of the class described embodyingan inlet er 'r e'tuan pipe, a vacuum pump to pump fluids and liquids out of said return pipe, a discharge "p'ip'e for said pump, a check "valve in said discharge pipe, a discharge "chamber enclosing the outlet of said discharge pipe, a vapor "or gas relief) valve for said discharge chamber, a receiving tank, a connecting pipe betive'en said discharge chai'nberand said receiving tank, a

pressure adjusting valve in said connecting pipe disp'os'ed't'o 'opei'ateat a predetermined pressure, outlet-pi e for said receiving tank, said "outlet pi )e extending for some "distance above the our of said receiving tank, a second pump to act upon theliquids in said outlet pipe, a check valve in theodischarge outlet of said last named pump, a

, 'se'c'o'nd outlet pipe conneetingsai'd --receivii1'g tank and said first named pump, a check valve disposed in said second outlet pipe, said second outlet pipe extending within said return'pip'e, and apressure adjusting 'pipe connecting said return pipe "and said i'ecelvmg tank.

a. Adevic'e of the cla s described emboay ing an'inlet 'or return pipe, a vacuum ump to pump fluids and liquids'out of said return pipe, a "discharge pip for said pump, a 'check valve in said discharge "pipe, a discharge chamber 1 enclosingthe outlet "of said discharge pipe, at 'vapdr or'gas relief valve for said 'dischargec-hanib'er, a receiving tank,

a connecting *pipe between said discharge chamber and said receiving tank, a pressure adjusting valve in said connecting pipe disposed to operate at a "predetermined pressurefan outlet' ipe for said receiving tank, saictoutiet pipe extending fo'i so'rne distance aloiive the flo'or of said receivin tank, a secondpunip to act upon-the liquids in said outlet pipe, a second valve the discharge outlet of said last named um a second outlet pipe connecting said receivingtaiik and said first named "pump, ache'ck disposed insaid secondfoutlet pi'pe, said sseona utlet p'p'e'eitehdii within sea-a returne ipaa pres'sur aitju stifngpi eonnect infg said return pipe'ahdsaid receivingtank, and a pipe iqm ing a cqminunicating I paseaw y beate h "said .lifi' s di j 'n' a heien a ng Pipe wet saidkdischarge chamber and said receivm'g tan- 4 In witness e aear i rmit subscribe my name this'tith da'y oi; Oct, A. D.-, 191 9'.

Images