# US 2014/0193260 A1 · Methods and apparatuses for a pump > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2014/0193260 A1 - Document ID: US20140193260A1 - Status: Published application - Kind: A1 - Application number: 14/124,510 - Filed: 2012-06-22 - Published: 2014-07-10 - Earliest claimed: 2011-06-22 - Assignees: E.G.O. Elektro-Geraetebau GmbH - Inventors: Volker Block; Tobias Albert - Web page: https://patentgrep.com/patent/US20140193260A1 ## CPC - D06F 39/04: Heating arrangements - A47L 15/4225: {Arrangements or adaption of recirculation or discharge pumps} - F04D 29/2222: {Construction and assembly (F04D29/2211 takes precedence)} - F04D 29/247: {elastic or self-adjusting} - D06F: LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES - A47L: DOMESTIC WASHING OR CLEANING (brushes A46B; cleaning quantities of bottles or of other hollow articles of one kind B08B9/00; laundry D06F); SUCTION CLEANERS IN GENERAL (cleaning in general B08) - F04D: NON-POSITIVE-DISPLACEMENT PUMPS (engine fuel-injection pumps F02M; ion pumps H01J41/12; electrodynamic pumps H02K44/02) ## 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. ## Claims ### Claim 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. ### Claim 2 (depends on 1) 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. ### Claim 3 (depends on 1) The pump as claimed in claim 1, wherein said spring force is afforded inherently by elastic properties of a material of said impeller blade. ### Claim 4 (depends on 1) The pump as claimed in claim 1, wherein said impeller blades are curved monotonically radially outward from said fixed mounting. ### Claim 5 (depends on 4) The pump as claimed in claim 4, wherein said impeller blades are curved monotonically radially outward from said fixed mounting along their entire course. ### Claim 6 (depends on 4) The pump as claimed in claim 4, wherein a curvature runs radially outward opposite to a direction of rotation. ### Claim 7 (depends on 4) 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°. ### Claim 8 (depends on 7) 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°. ### Claim 9 (depends on 4) 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°. ### Claim 10 (depends on 9) 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°. ### Claim 11 (depends on 1) The pump as claimed in claim 1, wherein said fixed mounting is a torque-resistant mounting. ### Claim 12 (depends on 1) 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. ### Claim 13 (depends on 12) 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. ### Claim 14 (depends on 1) The pump as claimed in claim 1, wherein said impeller blades run from a torque-resistant mounting radially outward freely without further guidance. ### Claim 15 (depends on 1) 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. ### Claim 16 (depends on 15) 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. ### Claim 17 (depends on 15) 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. ### Claim 18 (depends on 17) The pump as claimed in claim 17, wherein said sliding element is a pin-like sliding element. ### Claim 19 (depends on 1) 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. ### Claim 20 (depends on 19) 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. ### Claim 21 (depends on 1) 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. ### Claim 22 (depends on 20) The pump as claimed in claim 20, wherein, in said air position, said impeller blade bears against a stop. ### Claim 23 (depends on 20) The pump as claimed in claim 20, wherein a spring force is generated by specific elastic properties of said impeller blade. ### Claim 24 (depends on 1) The pump as claimed in claim 1, wherein an inner spring force of said impeller blade acts opposite to a direction of rotation. ### Claim 25 (depends on 1) 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. ### Claim 26 (depends on 1) 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. ### Claim 27 (depends on 1) 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.