Methods and apparatuses for a pump

Abstract

A radial pump for water has a drive motor, a pump chamber and an impeller revolving in the pump chamber. The impeller has a plurality of impeller blades which are designed, at least in regions, to be elastic and have a fixed mounting arranged in a region located near the impeller axis of rotation. They can bend elastically radially outward from this fixed mounting counter to a spring force.

1 . A pump for fluids, with a drive motor, with a pump chamber and with an impeller revolving or compressor rotating in said pump chamber, said pump being designed as a radial pump, said impeller having a plurality of impeller blades, wherein said impeller blades are designed, at least in some regions, to be flexible or elastic or movable and have a fixed mounting arranged in a region located near the impeller axis of rotation, said impeller blades being bendable or movable radially outward from said fixed mounting counter to a spring force. 
     
     
         2 . The pump as claimed in  claim 1 , wherein said impeller blades are bendable or movable in a direction of rotation of said impeller counter to said spring force. 
     
     
         3 . The pump as claimed in  claim 1 , wherein said spring force is afforded inherently by elastic properties of a material of said impeller blade. 
     
     
         4 . The pump as claimed in  claim 1 , wherein said impeller blades are curved monotonically radially outward from said fixed mounting. 
     
     
         5 . The pump as claimed in  claim 4 , wherein said impeller blades are curved monotonically radially outward from said fixed mounting along their entire course. 
     
     
         6 . The pump as claimed in  claim 4 , wherein a curvature runs radially outward opposite to a direction of rotation. 
     
     
         7 . The pump as claimed in  claim 4 , wherein an angle of said impeller blades to a radial direction in a state bent inward to a maximum extent amounts to less than 90°. 
     
     
         8 . The pump as claimed in  claim 7 , wherein said angle of said impeller blades to said radial direction in said state bent inward to said maximum extent amounts to between 70° and 80°. 
     
     
         9 . The pump as claimed in  claim 4 , wherein an angle of said impeller blades to a radial direction in a state bent outward to a maximum extent amounts to more than 90°. 
     
     
         10 . The pump as claimed in  claim 9 , wherein said angle of said impeller blades to said radial direction in said state bent outward to said maximum extent amounts to between 100° and 110°. 
     
     
         11 . The pump as claimed in  claim 1 , wherein said fixed mounting is a torque-resistant mounting. 
     
     
         12 . The pump as claimed in  claim 1 , wherein said fixed mounting of said impeller blades occupies a radially innermost region of said impeller blades or is arranged there. 
     
     
         13 . The pump as claimed in  claim 12 , wherein said fixed mounting of said impeller blades occupies said radially innermost region of said impeller blades or is arranged there as a torque-resistant mounting with securing of a longitudinal portion of said impeller blades of at least 0.5 cm. 
     
     
         14 . The pump as claimed in  claim 1 , wherein said impeller blades run from a torque-resistant mounting radially outward freely without further guidance. 
     
     
         15 . The pump as claimed in  claim 1 , wherein, radially outside a fastening of said impeller blades, a guide of said impeller blades in a direction along said impeller axis of rotation is provided. 
     
     
         16 . The pump as claimed in  claim 15 , wherein said guide is provided by an impeller bottom disk and an impeller cover disk, between which said impeller blades are arranged or can project. 
     
     
         17 . The pump as claimed in  claim 15 , wherein an impeller blade has an elongate continuous longitudinal slot in a radially outer region in a direction parallel to said impeller axis of rotation, there being arranged in said elongate continuous longitudinal slot a sliding element, which is movable along a circumferential direction in a slot at least in said impeller bottom disk or in said impeller cover disk and which at the same time is displaceable in said elongate continuous longitudinal slot in said impeller blade. 
     
     
         18 . The pump as claimed in  claim 17 , wherein said sliding element is a pin-like sliding element. 
     
     
         19 . The pump as claimed in  claim 1 , wherein said impeller blade has a water position curved to a maximum extent for conveyance of water or other liquid. 
     
     
         20 . The pump as claimed in  claim 19 , wherein, in said water position, said impeller blade bears against a stop as a result of force exerted by the conveyed water. 
     
     
         21 . The pump as claimed in  claim 1 , wherein, in a minimally curved state, said impeller blade assumes an air position and at the same time is loaded by spring force. 
     
     
         22 . The pump as claimed in  claim 20 , wherein, in said air position, said impeller blade bears against a stop. 
     
     
         23 . The pump as claimed in  claim 20 , wherein a spring force is generated by specific elastic properties of said impeller blade. 
     
     
         24 . The pump as claimed in  claim 1 , wherein an inner spring force of said impeller blade acts opposite to a direction of rotation. 
     
     
         25 . The pump as claimed in  claim 1 , wherein an inner spring force of said impeller blade is afforded over a substantial part of its length by correspondingly elastic or flexible properties of said impeller blade. 
     
     
         26 . The pump as claimed in  claim 1 , wherein an entire impeller blade is composed of a single material and also has essentially a constant cross section over its length. 
     
     
         27 . The pump as claimed in  claim 1 , wherein, in a minimally curved state, said impeller blades project out of said impeller or between an impeller bottom disk and an impeller cover disk.