US3371613A - Sewage pump or the like - Google Patents

Sewage pump or the like Download PDF

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Publication number
US3371613A
US3371613A US544160A US54416066A US3371613A US 3371613 A US3371613 A US 3371613A US 544160 A US544160 A US 544160A US 54416066 A US54416066 A US 54416066A US 3371613 A US3371613 A US 3371613A
Authority
US
United States
Prior art keywords
cooling
pump
impeller
water
sewage
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
US544160A
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English (en)
Inventor
Dahlgren Jens Karl Adolf
Sjostrand Carl Evert
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Xylem Water Solutions AB
Original Assignee
Stenberg Flygt AB
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Stenberg Flygt AB filed Critical Stenberg Flygt AB
Application granted granted Critical
Publication of US3371613A publication Critical patent/US3371613A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/58—Cooling; Heating; Diminishing heat transfer
    • F04D29/586—Cooling; Heating; Diminishing heat transfer specially adapted for liquid pumps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D13/00—Pumping installations or systems
    • F04D13/02—Units comprising pumps and their driving means
    • F04D13/06—Units comprising pumps and their driving means the pump being electrically driven
    • F04D13/08—Units comprising pumps and their driving means the pump being electrically driven for submerged use
    • F04D13/086—Units comprising pumps and their driving means the pump being electrically driven for submerged use the pump and drive motor are both submerged

Definitions

  • ABSTRACT OF THE DISCLOSURE A water cooled sewage pump having a cooling chamber surrounding the pump motor which receives cooling water by forced circulation from the pumped sewage.
  • the pump impeller is provided with vanes which draw water from the pumped sewage while separating the sludge therefrom and causes it to circulate through the cooling chamber.
  • the present invention relates to a pump for sewage, pulp or the like.
  • the sewage from a large number of buildings is collected in sewage stations or catch basins. Their location may be such that the water cannot flow by gravity to the sewerage system, for instance when the central main of the building runs below the sewerage system level or when the sewage is to be carried through elevated ground sectons.
  • pumps are usually used, which are specially designed for conveying sewage. These pumps have, i.a. a large-size impeller channel area in order to allow free passage of the sizable material.
  • the composition of sewage can be very variable especially if an industrial plant is connected into the sewage collecting station.
  • Very commonly encountered sizable materials in sewage are cotton waste, nylons, towels and the like. In unfavorable circumstances such materials may cause breakdowns due to the obstruction of narrow passages which may exist in the pumps.
  • the size of the pump assemblies is to be reduced if lowprice and lightweight pumps are to be provided. Since the pump unit itself has to be spacious in order to reduce the chances of obstruction, it is necessary to reduce the size of the motor unit. In this type of pumps which are mostly set up in moist chambers or submersed in water, the motor is fully enclosed and receives no ventilation, and therefore the dissipated heat has to be transferred through the motor casing wall to the surrounding air or water.
  • the motor casing can be cooled with water or in any other way.
  • a cooling can be achieved by bringing water to flow along the motor casing by means of a jacket surrounding said casing or by submersing the pump in the water so that the motor casing is at least partly submersed in the water.
  • the motor casing can be cooled by water sprinkling, provided a separate well or the like is available. According to actual regulations the motor casing cooling device 3,371,613 Patented Mar. 5, 1968 may not be connected to the water main unless special safety measures are taken which, however, do not guarantee a reliable cooling in case the water main is shut oif or a separate cooling pump breaks down, for instance.
  • the present invention is essentially characterized in that a sealing slit for the filtration of the sewage water to be used for cooling is formed between the upper peripheral edge of the pump impeller and the adjacent pump casing part abreast of the pump impeller edge. Cooling water relieved of impurities is thus supplied to said cooling water chamber, in the following called end cooling chamber.
  • end cooling chamber When pumping sewage, narrow channels are very likely to get stuffed with mud or blocked up by solid matters.
  • the water is however relieved from larger sizable material and can therefore circulate in the cooling chamber, which makes it possible to use sewage water for cooling purposes.
  • the rear side of the impeller is provided with auxiliary vanes in order to create a certain back-pressure in the cooling chamber when the pump is started up as well as for the cooling water circulation.
  • a further embodiment of the invention is characterized in that the pump motor casing is provided with a surrounding cooling jacket and that the jacket cooling water chamber thus formed between the motor casing and the cooling jacket is provided with a cooling water inlet connected to the end cooling chamber between the impeller and the pump cover near the pump impeller periphery and with a cooling water outlet near the pump impeller nave.
  • the motor casing is mounted on the pump casing 5.
  • the motor casing is surrounded by a cooling jacket 2 which, for instance, can be constituted by a separate member having for instance a slightly conical shape, said member being mounted outside the motor casing 1.
  • the cooling jacket may be cast integrally with the motor casing.
  • the pump casing 5 is provided with a large size flowthrough area. This also applies to the impeller 6 driven by a motor shaft 19.
  • An end cooling chamber 17 is provided above the impeller 6 between said impeller and the motor end shield or pump casing cover 18, said end cooling chamber 17 being intended to cool the cover or the motor end shield 18 as well as the motor bearing adjacent the impeller.
  • the rear side of the impeller 6 is provided with vanes 8 in order to create a certain back-pressure in the end cooling chamber 17. It is thus prevented that sludge may penetrate through the sealing slit 12 formed between the upper edge of the impeller 6 and the adjacent edge flange of the motor casing 5, or that sizable material or textiles may obstruct said slit or get twisted around the impeller.
  • Ducts 3 provided in the lower part of the motor casing 1 are connected to ducts 4 in the pump casing 5 in such a way that cooling water is circulated from the upper side of the impeller 6 through the cooling ducts 3 as well as the cooling ducts 7. Said circulation is produced by the vanes 8 provided on the rear side of the impeller 6.
  • the cooling ducts 7 are connected in series and arranged so that the inlet to said ducts is located at the impeller periphery where a higher pressure prevails, while the outlet from said ducts is located near the im peller nave 9 where a lower pressure prevails.
  • a number of partition walls 10 are provided inside the jacket chamber, which walls, as already mentioned, form ducts 7, running vertically in the embodiment shown, which ducts are communicating with adjacent ducts through ports 11.
  • a sealing slit 12 is being provided between the impeller 6 and the pump casing 5 in order to prevent impurities from penetrating into the cooling chambers.
  • Said slit is arranged in such a way that sides 13 of the impeller channel protrude beyond the inner wall 14 of the pump casing 5 in that a ring-shaped flange projects from said wall 14, the solid particles being flung past the slit opening to be carried out of the pump casing 5 by the water.
  • the cooling jacket 2 is at its top and its bottom provided with threaded and plugged lugs (15, 16 respectively), which can be used for flushing the cooling system when overhauling the pump, for instance.
  • the flow velocity of the cooling water can be further increased by arranging the cooling water inlet in a direction corresponding to a helical line around the cooling jacket.
  • the impeller may also be provided with vanes between the underside of the impeller and the bottom of the pump casing, and communication ducts may be provided between the cooling water chamber thus formed and the inlet and outlet ducts of the jacket cooling chamber as indicated by dashed lines on the drawing.
  • the device of the invention operates as follows:
  • the jacket cooling chamber can instead be used for additional separate cooling, the cover 18 being replaced by a cover without duct openings or the cover being displaced so that the duct openings are obturated by an overlying or subjacent member, or the duct openings being obturated by means of plugs of a resilient material so that the additional separate cooling can be achieved by connecting pipes for a cooling medium to the lugs and 16.
  • This embodiment can also be used for pumping hot liquids.
  • the additional cooling can also be used if a dilution of the pumped medium is permissible, in which case the coolant is supplied through the lug 15 or 16, and flows through the slit sealing into the medium being pumped.
  • This embodiment is also suitable when it is desirable that the diluent be well mixed into the medium being pumped.
  • the pumping can be carried out continuously without overheating the motor, whether the pump is submersed in water or not.
  • a sewage pump comprising an impeller, a motor driving said impeller, a pump housing surrounding said impeller, and a pump motor casing over said motor, said casing having a cover at one end thereof adjacent said pump housing defining an end cooling chamber, a cooling jacket surrounding said motor casing forming an annular cooling chamber therebetween, a sealing slit between the upper peripheral edge of said impeller and the adjacent pump housing portion abreast of said impeller periphery, and auxiliary vanes on the upper side of said impeller, whereby said auxiliary vanes cause cooling water free of impurities to circulate through said sealing slit, said end cooler cooling chamber and said cooling jacket, said cooling water entering said cooling jacket through an inlet connected to the end cooling chamber between said impeller and said pump housing near said impeller periphery and said cooling jacket having a cooling water outlet near the nave of said impeller.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
US544160A 1965-04-30 1966-04-21 Sewage pump or the like Expired - Lifetime US3371613A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE05741/65A SE367465B (da) 1965-04-30 1965-04-30

Publications (1)

Publication Number Publication Date
US3371613A true US3371613A (en) 1968-03-05

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Family Applications (1)

Application Number Title Priority Date Filing Date
US544160A Expired - Lifetime US3371613A (en) 1965-04-30 1966-04-21 Sewage pump or the like

Country Status (4)

Country Link
US (1) US3371613A (da)
DE (1) DE1528862A1 (da)
NL (1) NL148983B (da)
SE (1) SE367465B (da)

Cited By (41)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3443519A (en) * 1967-12-11 1969-05-13 Acf Ind Inc Fuel pump with collector chamber
US4201524A (en) * 1978-09-05 1980-05-06 Wilkins Richard S Submersible pump system using a submersible internal combustion engine
US4208171A (en) * 1976-04-09 1980-06-17 Pumpex Production Ab Hydrodynamic pump units and regulators therefor
EP0058303A1 (en) * 1981-02-13 1982-08-25 Gambro Lundia AB A water-purification unit with a liquid cooled pump motor
US4700092A (en) * 1985-07-09 1987-10-13 Lafert S.R.L. Electric motor liquid cooling structure
US4854373A (en) * 1988-03-30 1989-08-08 Williams Gordon G Heat exchanger for a pump motor
US4864172A (en) * 1986-06-20 1989-09-05 Carl Schenck Ag Method and apparatus for cooling an eddy current powder absorption unit
US4958988A (en) * 1985-09-26 1990-09-25 Ormat Turbines, Ltd. Motor driven pump for pumping viscous solutions
EP0467282A1 (de) * 1990-07-16 1992-01-22 ABS Pumpen AG Vorrichtung zur selbsttätigen Entlüftung einer Kühlkammer
US5134328A (en) * 1991-04-04 1992-07-28 Baker Hughes Incorporated Submersible pump protection for hostile environments
US5281088A (en) * 1991-09-03 1994-01-25 Itt Flygt Ab Centrifugal pump impeller, and in combination with a centrifugal pump housing
US5293929A (en) * 1992-02-21 1994-03-15 Smith Roger D Cooling apparatus for machine parts such as pump seals
DE4319619A1 (de) * 1993-06-14 1994-12-15 Wilo Gmbh Tauchmotorpumpe
US5616973A (en) * 1994-06-29 1997-04-01 Yeomans Chicago Corporation Pump motor housing with improved cooling means
US6121698A (en) * 1998-07-28 2000-09-19 Fairbanks Morse Company Oil cooled motor and pump apparatus
WO2002023699A2 (de) * 2000-09-14 2002-03-21 Elin Ebg Motoren Gmbh Flüssigkeitsgekühlter elektromotor
EP1409872A1 (en) * 2000-06-08 2004-04-21 Aqua-Flo, Incorporated Heat exchanging means for a pump motor using a bypass tube within a recirculating water system
US20060125333A1 (en) * 2002-10-18 2006-06-15 Hans-Jurgen Vehner And Gunter Sonnauer Dipping varnish-coated cooling shell of a housing for an electric machine
US20060180302A1 (en) * 2005-02-17 2006-08-17 Concurrent Technologies International Llc Groundwater sampling device
US7265468B1 (en) * 2005-11-22 2007-09-04 Mancl Dennis J Water repellent motor sleeve
US20080286134A1 (en) * 2007-05-16 2008-11-20 Steven Regalado Submersible pumping systems and methods for deep well applications
US20090175737A1 (en) * 2007-12-04 2009-07-09 Concurrent Technologies International, Llc Groundwater sampling device
US20100047091A1 (en) * 2007-02-21 2010-02-25 Alfred Kaercher Gmbh & Co. Kg Motor-pump unit
US20110200469A1 (en) * 2010-02-12 2011-08-18 Junya Kawabata Submersible motor pump, motor pump, and tandem mechanical seal
US20110268589A1 (en) * 2009-02-26 2011-11-03 Grundfos Management A/S Pump assembly
US20120034112A1 (en) * 2009-02-13 2012-02-09 Alfred Kaercher Gmbh & Co. Kg Motor pump unit
US20130183178A1 (en) * 2010-09-13 2013-07-18 Zenit International S. A. Cooling systems for submersible pumps
US20130189131A1 (en) * 2012-01-19 2013-07-25 Han-Lung Huang Water cooled motor with stainless steel cooling jacket
US20140010683A1 (en) * 2011-03-31 2014-01-09 Ningbo Jushen Pumps Industry Co., Ltd. Large-scale submersible sewage pump
DE102012218607A1 (de) * 2012-10-12 2014-04-17 Continental Automotive Gmbh Gehäuse für einen Elektromotor, Elektromotor und Fahrzeug mit einem Elektromotor
US8727748B2 (en) 2008-11-14 2014-05-20 Alfred Kaercher Gmbh & Co. Kg High-pressure cleaning device
US8920138B2 (en) 2009-02-13 2014-12-30 Alfred Kaercher Gmbh & Co. Kg Motor pump unit
US9046087B2 (en) 2009-02-13 2015-06-02 Alfred Kaercher Gmbh & Co. Kg Motor pump unit
WO2016075636A1 (en) 2014-11-13 2016-05-19 Caprari S.P.A. Electric pump with closed loop cooling system
US20170012502A1 (en) * 2014-03-03 2017-01-12 Kobelco Construction Machinery Co., Ltd. Electric motor
US20180278119A1 (en) * 2015-09-28 2018-09-27 Robert Bosch Gmbh Housing for an electric machine
US10156240B2 (en) 2016-06-16 2018-12-18 Scott C. Mancl Motor-driven fan with trapped adhesive for minimizing vibration
US20200037625A1 (en) * 2017-04-18 2020-02-06 Spx Flow Technology Danmark A/S Pump for pumping heat-sensitive fluids
US10992204B2 (en) * 2016-05-13 2021-04-27 Valeo Equipements Electriques Moteur Rotary electrical machine with optimised cooling
EP3879108A1 (en) * 2020-03-09 2021-09-15 Dab Pumps S.p.A. Electric pump with a monolithic jacket
US11808268B2 (en) 2020-10-19 2023-11-07 Milwaukee Electric Tool Corporation Stick pump assembly

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4430764A1 (de) * 1994-08-30 1996-03-07 Klein Schanzlin & Becker Ag Kühleinrichtung
DE4434461A1 (de) * 1994-09-27 1996-03-28 Klein Schanzlin & Becker Ag Tauchmotorpumpe für grob verunreinigte Flüssigkeiten
DE102005034341A1 (de) * 2005-07-22 2007-01-25 Ksb Aktiengesellschaft Tauchmotorpumpe mit Kühlmantel

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB496115A (en) * 1937-04-21 1938-11-21 Drysdale & Co Ltd Improvements in or relating to submersible pumps
US2862120A (en) * 1957-07-02 1958-11-25 Onsrud Machine Works Inc Fluid-cooled motor housing
CH394811A (de) * 1962-03-23 1965-06-30 E M B Elektromotorenbau Ag Umwälzpumpe

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB496115A (en) * 1937-04-21 1938-11-21 Drysdale & Co Ltd Improvements in or relating to submersible pumps
US2862120A (en) * 1957-07-02 1958-11-25 Onsrud Machine Works Inc Fluid-cooled motor housing
CH394811A (de) * 1962-03-23 1965-06-30 E M B Elektromotorenbau Ag Umwälzpumpe

Cited By (63)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3443519A (en) * 1967-12-11 1969-05-13 Acf Ind Inc Fuel pump with collector chamber
US4208171A (en) * 1976-04-09 1980-06-17 Pumpex Production Ab Hydrodynamic pump units and regulators therefor
US4201524A (en) * 1978-09-05 1980-05-06 Wilkins Richard S Submersible pump system using a submersible internal combustion engine
EP0058303A1 (en) * 1981-02-13 1982-08-25 Gambro Lundia AB A water-purification unit with a liquid cooled pump motor
US4700092A (en) * 1985-07-09 1987-10-13 Lafert S.R.L. Electric motor liquid cooling structure
US4958988A (en) * 1985-09-26 1990-09-25 Ormat Turbines, Ltd. Motor driven pump for pumping viscous solutions
US4864172A (en) * 1986-06-20 1989-09-05 Carl Schenck Ag Method and apparatus for cooling an eddy current powder absorption unit
US4854373A (en) * 1988-03-30 1989-08-08 Williams Gordon G Heat exchanger for a pump motor
EP0467282A1 (de) * 1990-07-16 1992-01-22 ABS Pumpen AG Vorrichtung zur selbsttätigen Entlüftung einer Kühlkammer
US5134328A (en) * 1991-04-04 1992-07-28 Baker Hughes Incorporated Submersible pump protection for hostile environments
US5281088A (en) * 1991-09-03 1994-01-25 Itt Flygt Ab Centrifugal pump impeller, and in combination with a centrifugal pump housing
AU646177B2 (en) * 1991-09-03 1994-02-10 Itt Flygt Ab Pump impeller
US5293929A (en) * 1992-02-21 1994-03-15 Smith Roger D Cooling apparatus for machine parts such as pump seals
DE4319619A1 (de) * 1993-06-14 1994-12-15 Wilo Gmbh Tauchmotorpumpe
US5616973A (en) * 1994-06-29 1997-04-01 Yeomans Chicago Corporation Pump motor housing with improved cooling means
US6121698A (en) * 1998-07-28 2000-09-19 Fairbanks Morse Company Oil cooled motor and pump apparatus
EP1409872A1 (en) * 2000-06-08 2004-04-21 Aqua-Flo, Incorporated Heat exchanging means for a pump motor using a bypass tube within a recirculating water system
EP1409872A4 (en) * 2000-06-08 2005-05-18 Aqua Flo Inc A PARTIAL CIRCUIT OF A WATER CIRCUIT IS FOR COOLING THE ENGINE OF THE CIRCULATORY PUMP
WO2002023699A2 (de) * 2000-09-14 2002-03-21 Elin Ebg Motoren Gmbh Flüssigkeitsgekühlter elektromotor
WO2002023699A3 (de) * 2000-09-14 2002-09-19 Va Tech Elin Ebg Motoren Gmbh Flüssigkeitsgekühlter elektromotor
US7005765B1 (en) 2000-09-14 2006-02-28 Elin Ebg Motoren Gmbh Liquid-cooled electromotor
US20060125333A1 (en) * 2002-10-18 2006-06-15 Hans-Jurgen Vehner And Gunter Sonnauer Dipping varnish-coated cooling shell of a housing for an electric machine
US7576458B2 (en) * 2002-10-18 2009-08-18 Baumuller Nurnberg Gmbh Dipping varnish-coated cooling shell of a housing for an electric machine
US20060180302A1 (en) * 2005-02-17 2006-08-17 Concurrent Technologies International Llc Groundwater sampling device
US7252141B2 (en) 2005-02-17 2007-08-07 Concurrent Technologies International, Llc Groundwater sampling device
US20080087413A1 (en) * 2005-02-17 2008-04-17 Concurrent Technologies International Llc Groundwater sampling device
US7584785B2 (en) 2005-02-17 2009-09-08 Concurrent Technologies International, Llc Groundwater sampling device
US7265468B1 (en) * 2005-11-22 2007-09-04 Mancl Dennis J Water repellent motor sleeve
US20100047091A1 (en) * 2007-02-21 2010-02-25 Alfred Kaercher Gmbh & Co. Kg Motor-pump unit
US8147216B2 (en) * 2007-02-21 2012-04-03 Alfred Kaercher Gmbh & Co., Kg Motor-pump unit
US20080286134A1 (en) * 2007-05-16 2008-11-20 Steven Regalado Submersible pumping systems and methods for deep well applications
US20100270028A1 (en) * 2007-05-16 2010-10-28 Geotech Environmental Equipment, Inc. Submersible pumping systems and methods for deep well applications
US20090175737A1 (en) * 2007-12-04 2009-07-09 Concurrent Technologies International, Llc Groundwater sampling device
US8727748B2 (en) 2008-11-14 2014-05-20 Alfred Kaercher Gmbh & Co. Kg High-pressure cleaning device
US20120034112A1 (en) * 2009-02-13 2012-02-09 Alfred Kaercher Gmbh & Co. Kg Motor pump unit
US9046087B2 (en) 2009-02-13 2015-06-02 Alfred Kaercher Gmbh & Co. Kg Motor pump unit
US8920138B2 (en) 2009-02-13 2014-12-30 Alfred Kaercher Gmbh & Co. Kg Motor pump unit
US8734129B2 (en) * 2009-02-13 2014-05-27 Alfred Kaercher Gmbh & Co. Kg Motor pump unit
US8608458B2 (en) * 2009-02-26 2013-12-17 Grundfos Management A/S Pump assembly
US20110268589A1 (en) * 2009-02-26 2011-11-03 Grundfos Management A/S Pump assembly
CN105298904B (zh) * 2010-02-12 2017-11-21 株式会社荏原制作所 潜水式马达泵、马达泵及串联机械密封
US20110200469A1 (en) * 2010-02-12 2011-08-18 Junya Kawabata Submersible motor pump, motor pump, and tandem mechanical seal
US8491277B2 (en) * 2010-02-12 2013-07-23 Ebara Corporation Submersible motor pump, motor pump, and tandem mechanical seal
CN102753830A (zh) * 2010-02-12 2012-10-24 株式会社荏原制作所 潜水式马达泵、马达泵及串联机械密封
CN102753830B (zh) * 2010-02-12 2015-12-09 株式会社荏原制作所 潜水式马达泵、马达泵及串联机械密封
CN105298904A (zh) * 2010-02-12 2016-02-03 株式会社荏原制作所 潜水式马达泵、马达泵及串联机械密封
US20130183178A1 (en) * 2010-09-13 2013-07-18 Zenit International S. A. Cooling systems for submersible pumps
US9297386B2 (en) * 2010-09-13 2016-03-29 Zenit International S.A. Cooling systems for submersible pumps
US9255577B2 (en) * 2011-03-31 2016-02-09 Ningbo Jushen Pumps Industry Co., Ltd. Large-scale submersible sewage pump
US20140010683A1 (en) * 2011-03-31 2014-01-09 Ningbo Jushen Pumps Industry Co., Ltd. Large-scale submersible sewage pump
US20130189131A1 (en) * 2012-01-19 2013-07-25 Han-Lung Huang Water cooled motor with stainless steel cooling jacket
DE102012218607A1 (de) * 2012-10-12 2014-04-17 Continental Automotive Gmbh Gehäuse für einen Elektromotor, Elektromotor und Fahrzeug mit einem Elektromotor
US10284053B2 (en) * 2014-03-03 2019-05-07 Kobelco Construction Machinery Co., Ltd. Electric motor
US20170012502A1 (en) * 2014-03-03 2017-01-12 Kobelco Construction Machinery Co., Ltd. Electric motor
WO2016075636A1 (en) 2014-11-13 2016-05-19 Caprari S.P.A. Electric pump with closed loop cooling system
US20180278119A1 (en) * 2015-09-28 2018-09-27 Robert Bosch Gmbh Housing for an electric machine
US10516316B2 (en) * 2015-09-28 2019-12-24 Robert Bosch Gmbh Housing for an electric machine
US10992204B2 (en) * 2016-05-13 2021-04-27 Valeo Equipements Electriques Moteur Rotary electrical machine with optimised cooling
US10156240B2 (en) 2016-06-16 2018-12-18 Scott C. Mancl Motor-driven fan with trapped adhesive for minimizing vibration
US10480520B2 (en) 2016-06-16 2019-11-19 Scott C. Mancl Motor-driven fan with an assembly for minimizing vibration and strain
US20200037625A1 (en) * 2017-04-18 2020-02-06 Spx Flow Technology Danmark A/S Pump for pumping heat-sensitive fluids
EP3879108A1 (en) * 2020-03-09 2021-09-15 Dab Pumps S.p.A. Electric pump with a monolithic jacket
US11808268B2 (en) 2020-10-19 2023-11-07 Milwaukee Electric Tool Corporation Stick pump assembly

Also Published As

Publication number Publication date
DE1528862A1 (de) 1970-04-23
NL6605458A (da) 1966-10-31
SE367465B (da) 1974-05-27
NL148983B (nl) 1976-03-15

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