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A bladeless pump that includes a housing that defines a circular confined space of substantial width into which either a single phase fluid or multiphase fluid is sequentially introduced through a centrally disposed inlet in a first side of the housing to be subjected to boundary layer rotational dr

A bladeless pump that includes a housing that defines a circular confined space of substantial width into which either a single phase fluid or multiphase fluid is sequentially introduced through a centrally disposed inlet in a first side of the housing to be subjected to boundary layer rotational drag by at least one substantially smooth disc that rotates in the confined space intermediate the first and second side pieces of the housing and parallel thereto. The pump is capable of pumping a multiphase fluid such as that from a geothermal well that includes water, dissolved solids, steam and gas vapor, or a fluid in which the outer phase is water and the inner phase may range through such diverse materials as particled coal, marine animals such as fish, shrimp and crustaceans, and edibles that include fruits, vegetables and berries, as well as metallic objects of which steel ball bearings is an example. The pump has the capability of pumping beer without appreciably frothing the latter. Also, the pump is particularly adapted for pumping a multiphase liquid in which the inner phase is extremely frangible, of which blood is an important example. The boundary layers on the rotating discs prevent objects in the inner phase of a fluid contacting the discs and as a result there is little or no abrasion of the latter. Also, the boundary layers on the discs protect the latter from contact with bubbles in the fluid, and as a result there is no cavitation on the discs due to abrupt collapse of the bubbles.

대표청구항 ▼

A pump for use in transferring either a single phase or multiphase fluid from a first location to a second location which includes: a. a housing assembly that includes first and second vertically disposed, laterally spaced first and second side walls and a continuous end wall that extends transverse

A pump for use in transferring either a single phase or multiphase fluid from a first location to a second location which includes: a. a housing assembly that includes first and second vertically disposed, laterally spaced first and second side walls and a continuous end wall that extends transversely therebetween to cooperate therewith to define a circular confined space, a centrally disposed first opening in said first side wall in communication with said first location, a discharge opening in said end wall that is at a higher elevation than said first opening and is in communication with said second location, and a second opening in said second side wall that is oppositely disposed from said first opening, said housing assembly formed from a rigid material resistant to action by said fluid; b. a rotatable drive shaft that has first and second ends; c. bearing and seal means supported in a fixed relationship from said second side wall and coaxially aligned with said second opening therein, said bearing and seal means rotatably supporting said drive shaft, with said first end of the latter disposed within said confined space and adjacent the latter; d. a substantially smooth first circular disc in said confined space secured to said first end of said drive shaft and intermediately positioned between said first and second side walls with said second end of drive shaft when rotated at greater than a first rate causing a circular body of said fluid in said confined space to rotate due to a rotary force exerted on said body of fluid as a boundary layer of said fluid on the exterior surface of said first circular disc is rotated relative to said body of water to be sheared therefrom, and said fluid entering said confined space through said first opening having increasing rotary velocity imparted thereto to sequentially move outwardly in a spiral path due to the centrifugal force imposed thereon and be sequentially ejected from said discharge opening to flow to said second location said first side wall and end wall at their junction defining a circumferentially extending recess that is in communication with said confined space; and e. a first ring-shaped side plate rotatably supported in said confined space adjacent said first side wall, and said first side plate having the outer peripheral edge portion thereof rotatably supported in said recess, said first side plate including a centered opening axially aligned with said first opening in said first side wall, with said first side plate free to rotate with said circular body of liquid to minimize the frictional drag on said circular body of fluid as said circular body rotates relative to said housing.