US1089665A - Centrifugal air-pump. - Google Patents

Description

G. PAGBL.

OENTRIFUGAL AIR PUMP. APPLIoATm'N FILED MAY 1o, 1911.

LBQQG- Patented Mar. 10, i914,

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GUs'rAv PAGEL, or CHARLOTTENBURG,GERMANY, AssIGNoR To GENERAL ELECTRIC COMPANY, a eoaromrroivor New YORK.

CENTRIFUGAL AIR-PUMP.

lessees.

Apparatus for removing vaporsv and un- 'condensed gases from condensers must, if

the vacuum in the condenser is to be kept Iconstantly as high as possible, be regulable within rather wide limits since it often happens that the steam engines. or turbines with which the condenser is used are 'sub,

jected to relatively great changes in operating conditions. In reciprocatmgor piston air pumps the necessary regulation can be -obtained by varying the number of' strokes or revolutions but the regulation of throwingwater air pumps, by a change of the speed of rotation is often-not applicable or not suflicient7 and the object of the present invention is the provision o f means for effectively regulating such .pumps by reducing the supply of throwing-water without impairing the eiiiciency of the pump due to the throttling ofthe supply andthe con; sequent loss of head which is objectionable .in all cases where complete .utilization of this head is essential to the efficient operation of the pump. A Said loss is`obviated by the. invention and although the quantity of the throwing medium is varied, the head of 1 the latter existing atany timeremains unchanged. This result is obtained by arranging an adjustable regulating member just inv advance of, or at only a small distance from a place where the pressure or Velocity 4of the auxiliary medium undergoes a change due tothe action 'of any means. If the regulating member in the form of a valve,

it may also serve as a supplyingdevce for the auxiliary mcdium,'thus avoidlng impact and eddies when the position of'said mem- In the accompanying draWing'Figure l shows an illustrative construction or embodiment of the invention in a rotary airsuction device working with an auxiliary or. throwing liquid medium, preferably water and Fig. 2Y is a cross sec-tion of the lower portion thereof. y

The invention consists of -a positively driven impeller'lwlieel 1 mounted on a suitable shaft and a directing ring or member 2 specification of Let ers raient.

Patented Mar. 10, 1914-.

Application filed May 10, 1911. Serial No. 626,240.

surrounding the impeller. The throwing- 'water or other auxiliary medium passes through the' pipe 3 into lthe impeller l and by reason of the velocity imparted to it by the impeller and itssubdivision into sepa-4 rate water-pistons in passing fromthc impeller to the directing ring 2, it draws into the gra-p4 the gases or Yapors that enter the pump through the vopening 5. The water'- pistons force the air, gses 'andj'vapor outwardly through the pas'sages'pfthe directing member into the chamber 6t'he air etc., passing olf through the conduit Z and the water through the conduit 8.

.The quantity of throwing-water for a givennumber of revolutions of the pump is' regulated by an annular slide valve 9 surrounding the shaftand movable longitudinally thereof, which 'also serves as a guide or means for. directing the throwing-water to theinletsvof the passages in the impeller. The valve can be shifted directly-in front 'of said linlets and parallel to the surfaces con- When the regulating device 9 is shifted by means of the lever 10 and the hand Wheel 1 1, no throttling occurs but only a reduction of` the quantity of throvving-water which flows into the impeller l so that notwithstandinr this regulation the maximum pressure differencewhich exists between the entrance and exit openings of the mpeller can always be completely utilized, a feature which is of great importance to the eflicient operation of the pump. ThisV regulation may, of course, be employed with otherrotary or fixed air-suction devices and may 1n some cases be only partial. The shifting of the regulating member may be accomplished automatically instead of by hand, as, for example, by connection with a suitable regulator.

vIn accordance with the provisions of the patent statutes, I have describedtlie principle of operation of my invention, together with the apparatus which I now consider to represent the'best embodiment thereof; but I desire to have it understood that the apparatus shown is only illustrative, and that the' invention can be carried out by other means.

What I claim as new and desire to secure by LettersPatentuof the United States, is,-

-.1-I The method of regulating an apparatus utilizing an auxiliary liquid medium for nnecting the bases of the impeller vanes. l

.drawing ofi gases, vapors, and the like by direct action of said medium thereon, which i consists in varying the quantity of the auxiliary medium Toy-means of a regulating member that is caused to act on said medium directly in advance of or at a small distance from a place where the pressure or velocity ofthe auxiliary medium undergoes a change,

2. In an apparatus utilizin an auxiliary liquid medium Jfor drawing oft gases, vapor,

nfl the like by direct action of said medium thercomthe combination of means for changthe pressure or velocity of the auxiliary medium as it passes through said apparatus, and a device located at a'point closely ad- .;a 'ent the place where said means produces L said change which varies the quantity of the la' medium to regulate the operation of the apparatus.

3. In centrifugal air pump, the combination of an inipeller having passages for a throwing medium, means for supplying the throwing mcdiinn to the impeller including a. reguitting member adjacent to the inlets of said passages which varies the quantity of throwing medium supplied to the impelier, means conveying air, to the pump, and a directing member surrounding the impeller through which the throwing medium and the air pass.

fi, In a centrifugal air pump, the combination of an impeller having passages for tigiroiving-ivater, means for supplying throwing-Water to the impeller including avalve .having passages to direct the throwingter to the iniets of said impeller passages, mechanism for adjusting the valve to vary the quantity of Water delivered to said inlets, and a directing member surrounding the impeller through which the throwing- Water and air pass. i

5. In a. centrifugal' air pump, the combination of an impeller having passages for throwing-water, a shaft on which the impeller is mounted, means for supplying throwing-Water to the impeller including a valve Losa surrounding the shaft and movable longitudinally thereof, mechanism for adjusting the valve to vary the quantity of throwingivater delivered to the impeller, and a directing member surrounding the impeller through which thevthrowing-vvater'and air pass.

6. In a centrifugal air pump, the combination of an impeller having passages for throwing-Water, a shaft on Which the impeller is mounted, a valve for regulating the supply of throwing-Water Wnich surrounds the shaft and is movable longitudinally thereof, said valve being provided With passages 'ivhich direct the throwing-Water to the inlets of said impeller passages, means for adjusting the valve longitudinally of the shaft to vary the quantity of throwing- Water delivered to the impeller, and a directingniember surrounding the impeller through which the throwing-Water and air nass.

7. In a centrifugal air pump, the combination of a shaft, an impelleron the shaft having a ring provided With passages for throwing-Water, a valve for regulating the supply of throwing-Water Which surrounds the shaftT is movable longitudinally thereof and has a portion. arranged Within. the ring,l said valve having passages vthat convey throwing-Water and deliver it from said portion to the inletsof the passages Yinthe impeller, means for moving the valve longitu-v dinally of the shaft to vary the quantity of throwing-water delivered to the impeller without throttling the supply, and a directing member surrounding lthe impeller through which the throwing-Water and air pass. v

In Witness whereof, I have hereunto set my hand this day of April-15, 1911.L

GUSTAV PAGEL.

lVit'nesses' G. HOLDTMANN, M. B RooKMANN.

Gopea ei this patent may be obtained for ve cents Washington, D. C.

each, by addressing the Commissioner of Patenti,

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