# US 2021/0277912 A1 · Electric pump with jacket > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2021/0277912 A1 - Document ID: US20210277912A1 - Status: Published application - Kind: A1 - Application number: 17/195,812 - Filed: 2021-03-09 - Published: 2021-09-09 - Earliest claimed: 2020-03-09 - Assignees: Dab Pumps S.P.A. - Applicants: Dab Pumps S.P.A. - Inventors: Francesco SINICO; Pietro CAILOTTO; Michele CAPPOCCHIN; Mattia CASAGRANDE; Luca CALORE - Web page: https://patentgrep.com/patent/US20210277912A1 ## CPC - F04D 29/406: {especially adapted for liquid pumps} - F04D 13/06: the pump being electrically driven - F04D 13/16: with storage reservoirs - F04D 29/007: {especially adapted for liquid pumps} - F04D 29/043: Shafts - F04D 29/5806: {Cooling the drive system} - F04D 29/586: {specially adapted for liquid pumps} - F04D 29/605: {specially adapted for liquid pumps} - F04D 29/628: {especially adapted for liquid pumps} - F04D 1/06: Multi-stage pumps (F04D1/02, F04D13/10 take precedence) - F04D 29/086: {especially adapted for liquid pumps} - F04D 29/426: {especially adapted for liquid pumps} - F04D 29/445: {especially adapted for liquid pumps} - F04D 29/5813: {Cooling the control unit} - F05D 2260/6022: of leakage having past a seal - F04D: NON-POSITIVE-DISPLACEMENT PUMPS (engine fuel-injection pumps F02M; ion pumps H01J41/12; electrodynamic pumps H02K44/02) - F05D: INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS ## Abstract An electric pump for moving a liquid, comprising a containment jacket which encloses: a mechanical section, which comprises an assembly for moving the liquid which comprises one or more impellers, interleaved by diffusers, keyed on a driving shaft, an electromechanical section, comprising an electric motor, contained in a shell and comprising in turn a rotor and a stator that surrounds the rotor, the rotor being keyed on the driving shaft, the electric pump comprising, at the ends of the jacket, a first cover and a second cover, the second cover having an intake port and a delivery port which are fluidically connected to the mechanical section. The jacket is provided monolithically. ## Claims ### Claim 1 An electric pump for moving a liquid, comprising a containment jacket which encloses: a mechanical section, which comprises an assembly for moving said liquid which comprises one or more impellers, interleaved by diffusers, keyed on a driving shaft, an electromechanical section, comprising an electric motor, contained in a shell and comprising in turn a rotor and a stator that surrounds said rotor, said rotor being keyed on said driving shaft, said electric pump comprising, at ends of said containment jacket, a first cover and a second cover, said second cover having an intake port and a delivery port which are fluidically connected to said mechanical section, said electric pump being characterized in that said containment jacket is provided monolithically. ### Claim 2 (depends on 1) The electric pump according to claim 1, wherein said containment jacket has a substantially tubular shape with a substantially cylindrical extension and an axis of extension thereof substantially coincides with an axis of extension of said electric pump. ### Claim 3 (depends on 1) The electric pump according to claim 1, wherein said jacket is made of a metallic material by calendering and welding. ### Claim 4 (depends on 1) The electric pump according to claim 1, wherein said containment jacket has a plurality of slots in which elements for fixing said jacket to said first cover and to said second cover are inserted, said slots: being provided with a hole an axis of extension of which is substantially parallel to the axis of extension of said containment jacket, being arranged on a outer lateral surface of said containment jacket, proximate to a respective cover. ### Claim 5 (depends on 2) The electric pump according to claim 2, wherein said containment jacket is provided with one or more through holes, an axis of extension of which is perpendicular to the axis of extension of said containment jacket, said one or more through holes being located at said electromechanical section, in a portion thereof, said portion being proximate to said mechanical section and being substantially comprised between said shell for the containment of said motor and the interface between said mechanical section and said electromechanical section. ### Claim 6 (depends on 5) The electric pump according to claim 5, wherein a nipple is inserted in each one of said one or more through holes. ### Claim 7 (depends on 5) The electric pump according to claim 5, further comprising at least one nipple which is fluidically connected to said portion of said electromechanical section. ### Claim 8 (depends on 7) The electric pump according to claim 7, further comprising a drainage tray which is connected to said at least one nipple that is connected fluidically to said portion of said electromechanical section. ### Claim 9 (depends on 1) The electric pump according to claim 1, further comprising an electronic assembly, which contains an electronic board for control of said motor which is fixed to an outer lateral surface of said containment jacket. ### Claim 10 (depends on 9) The electric pump according to claim 9, wherein the outer lateral surface of said containment jacket has: a plurality of fixing elements for fixing it to said electronic assembly, and/or a plurality of fixing elements for fixing a collar for the anchoring of a tank of said electric pump. ### Claim 11 (depends on 10) The electric pump according to claim 10, wherein said fixing elements are threaded stems which are fixed to said containment jacket, with an axis of extension that is perpendicular to the axis of extension of said containment jacket. ### Claim 12 (depends on 1) The electric pump according to claim 1, further comprising a wet portion inside said electromechanical section, which is separated from said portion of said electromechanical section and surrounds said shell, said wet portion being shaped so as to allow a passage of said liquid between said intake port and said delivery port, said liquid skimming: the outer lateral surface of said shell, moving from said intake port toward said first cover, the inner lateral surface of said containment jacket, moving from said first cover toward said delivery port. ### Claim 13 (depends on 9) The electric pump according to claim 9, wherein said electronic assembly comprises a heat sink which faces on one side said electronic board and on another side said containment jacket. ### Claim 14 (depends on 9) The electric pump according to claim 9, wherein said containment jacket is provided with one or more fixing elements for the fixing/support/thermal contact of said electronic assembly with respect to said containment jacket. ### Claim 15 (depends on 14) The electric pump according to claim 14, wherein said fixing/support/thermal contact elements are pins with an internal dead hole the axis of extension of which coincides with the axis of extension of the respective one of said pins, said pins being welded to said jacket with their axis of extension at right angles to the axis of extension of said containment jacket, said pins being inserted in corresponding through holes of said heat sink and being fastened to it by means of respective screws, each one of said screws being inserted in said internal dead hole of said pins. ### Claim 16 (depends on 1) The electric pump according to claim 1, wherein said containment jacket has such a shape as to provide a mechanical seal with a plurality of corresponding sealing elements arranged along the axis of extension of said electric pump, inside said containment jacket at different cross-sections of the latter. ### Claim 17 (depends on 1) The electric pump according to claim 1, wherein said containment jacket is fixed simultaneously to said first cover and to said second cover by means of a plurality of tension members. ### Claim 18 (depends on 17) The electric pump according to claim 17, wherein each one of said tension members has a stem that is comparable in length with the distance between said first cover and said second cover. ### Claim 19 (depends on 1) The electric pump according to claim 1, wherein said first cover is provided with a plurality of first holes which correspond to a plurality of second holes provided in said second cover so as to form pairs of matching first holes and second holes, each one of said tension members crossing, with said stem, a respective pair of holes and having: at a first end, a wider head, at a second threaded end, which is opposite the first end, a nut which is screwed to it. ### Claim 20 A tray for the drainage of liquid that exits from a containment jacket of an electric pump, wherein it can be connected fluidically to said containment jacket of said electric pump via a nipple. ### Claim 21 (depends on 20) The tray according to claim 20, wherein it is provided internally with a sensor for detecting presence of liquid.