Pump with reversible port function
OwnerRoss P Christiansen, Roy J Rozekinventors
Life of this patent
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Abstract
A pump has a pump assembly for pumping fluid. The pump assembly includes a fluid pressure changing mechanism in fluid communication with a valve plate which is in fluid communication with a port plate. A pair of flappers are interposed between and sealable with the valve plate and port plate. A head has a head port, and is in sealed engagement with the port plate, so that, in cooperation with the port plate and the valve plate, the flappers control fluid flowing through the head port and to and from the fluid pressure changing mechanism. Rotation of the port plate and valve plate relative to the head reverses flow of the fluid through the head port.
Claims22
A pump comprising:
- a fluid pressure changing mechanism;
- a valve plate having ports in fluid communication with said fluid pressure changing mechanism;
- a port plate sealingly engaging said valve plate, and having ports therein;
- a pair of flappers interposed between said valve plate and port plate, and one of said flappers being sealable over a port in said valve plate, and of said flappers being sealable over a port in said port plate;
- a head having a head port, and in fluid communication engagement with said port plate, wherein said flappers, in cooperation with said port plate and said valve plate, control fluid flowing through said head port and to and from said fluid pressure changing mechanism, and wherein rotation of said port plate and said valve plate relative to said head reverses flow of the fluid through said head port.
A method of reversing flow of fluid through a pump including a fluid pressure changing mechanism;
- a valve plate in fluid communication with said fluid pressure changing mechanism;
- a port plate sealingly engaging said valve plate;
- a flapper interposed between said valve plate and port plate, and sealingly engaging said valve plate and said port plate;
- and a head having a head port, and disposed above and in sealed engagement with said port plate, wherein in cooperation with said port plate and said valve plate, said flapper controls fluid flowing through said head port and to and from said fluid pressure changing mechanism, said method comprising:
- rotating said port plate and valve plate relative to said head to reverse flow of the fluid through said head port.
A pump comprising:
- a fluid pressure changing mechanism;
- an intake port in fluid communication with said fluid pressure changing mechanism, said intake port providing a path for fluid into said fluid changing mechanism;
- an exhaust port in fluid communication with said fluid pressure changing mechanism, said exhaust port providing a path for fluid out of said fluid changing mechanism;
- a head including a head port, said head having a first position relative to said intake and exhaust ports and a second position relative to said intake and exhaust ports, wherein operation of said fluid changing mechanism when said head is in said first position causes fluid to pass through said head port in a first direction, and operation of said fluid changing mechanism when said head is in said second position causes fluid to pass through said head port in a second direction.
Dependencies are inferred from the claim text.