EP1365149A2 - Hydraulische elektromagnetische Motorpumpeneinheit mit Freikolbentspanner - Google Patents

Hydraulische elektromagnetische Motorpumpeneinheit mit Freikolbentspanner Download PDF

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Publication number
EP1365149A2
EP1365149A2 EP03010665A EP03010665A EP1365149A2 EP 1365149 A2 EP1365149 A2 EP 1365149A2 EP 03010665 A EP03010665 A EP 03010665A EP 03010665 A EP03010665 A EP 03010665A EP 1365149 A2 EP1365149 A2 EP 1365149A2
Authority
EP
European Patent Office
Prior art keywords
motor pump
piston
magnetic
duct
coil
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.)
Granted
Application number
EP03010665A
Other languages
English (en)
French (fr)
Other versions
EP1365149A3 (de
EP1365149B1 (de
Inventor
Rino Botti
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.)
Ceme SpA
Original Assignee
Ceme Engineering SpA
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 Ceme Engineering SpA filed Critical Ceme Engineering SpA
Publication of EP1365149A2 publication Critical patent/EP1365149A2/de
Publication of EP1365149A3 publication Critical patent/EP1365149A3/de
Application granted granted Critical
Publication of EP1365149B1 publication Critical patent/EP1365149B1/de
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
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B17/00—Pumps characterised by combination with, or adaptation to, specific driving engines or motors
    • F04B17/03—Pumps characterised by combination with, or adaptation to, specific driving engines or motors driven by electric motors
    • F04B17/04—Pumps characterised by combination with, or adaptation to, specific driving engines or motors driven by electric motors using solenoids
    • F04B17/046—Pumps characterised by combination with, or adaptation to, specific driving engines or motors driven by electric motors using solenoids the fluid flowing through the moving part of the motor

Definitions

  • the present invention refers to a motor pump of the hydraulic-electromagnetic type with floating piston.
  • the present invention refers to a motor pump of the hydraulic-electromagnetic type with floating piston, particularly suitable for the use in the fluid motion, especially water.
  • This type of motor pumps is applied to various apparatuses such as irons, electric coffee percolators, irrigation systems and also in the automotive industry.
  • the operation of said motor pumps is based on the presence of a coil that cooperates with a couple of magnetic bearings; the coil is electrically powered and causes the axial movement of the floating piston or delivery piston with an alternate motion.
  • the coil is placed outside the body of the motor pump, while the magnetic bearings are positioned in an annular seat formed between the same coil and a sleeve housing said piston.
  • Said piston is elastically supported by opposite helical springs that are alternatively compressed during the floating in order to allow the passage of the fluid from the inlet duct to the delivery one.
  • Known valves, rings and rubber gaskets associated to the piston and to the relevant sleeve assure the seal of the fluid moving inside the body of the motor pump.
  • motor pumps have an important drawback that is essentially related to the pressure level that can be obtained, considering that sometimes, for particular uses, a high fluid pressurization is required. It is known that an increase in fluid pressurization can be obtained increasing the intensity of the magnetic field by the oversizing of the coil. This implies an unavoidable increase of the motor pump dimensions and a considerable additional cost due. to the increase of the winding coils. A greater size of the body of the motor pump in its whole sometimes is not compatible with the installation of the motor pump on the target apparatus or it requires at least structural changes of the same apparatus. Even the increase in cost is an important factor that could lead to the manufacturing of uncompetitive products.
  • Object of the present invention is to remove the above-mentioned drawbacks.
  • object of the present invention is the provision of a motor pump of the hydraulic-electromagnetic type with floating piston wherein the pressure level of the delivery fluid can be increased without oversizing the coil with a subsequent increase of its dimensions and production costs.
  • a further object of the present invention is to provide a motor pump of the above-mentioned type that can guarantee a high resistance and reliability level in time and it is easily manufactured.
  • a motor pump comprising: a container body that is partly delimited, in its external part, by a coil; an inlet duct and an opposite outlet duct; a couple of opposite magnetic bearings that are spaced between them and placed between said container body and coil and a delivery piston that is placed inside the container body, slides in it and it is supported by a front and a rear helical spring wherein a magnetic bushing is placed in the central-lower part of said container body facing said inlet duct.
  • the magnetic bearing is preferably made of steel with a low magnetic residual content.
  • the motor pump of the present invention marked in its whole with 10 in Figure 2, comprises: an inlet duct 44'; an opposite outlet duct 36; a container body 12 which is partly delimited, in its external part, by a coil 14; a couple of opposite magnetic bearings 46, 46' that are spaced between them and placed between said body 12 and coil 14; a delivery piston 16 that is placed in said body 12, slides in it and it is elastically supported by a common front helical spring 20 and by a rear one 20'.
  • a seal valve 24 and a packing 26 of the delivery piston 16 are commonly placed.
  • Said packing 26 and said seal valve 24 cooperate with a support bearing 28 and with a rubber gasket 30 that is elastically tensioned by a further helical spring 32.
  • Said spring 32 and partly the rubber gasket 30 are housed inside a seat 34 of the delivery duct 22 whose diameter is fit to house the ensemble formed by the rubber gasket 30 and by the helical spring 32 and it is generally higher than the one of the outlet duct or hole 36 of the delivery duct 22.
  • a locking ring 38 with an internal thread engaging with a matching part that is threaded in the outer part of the container body 12 is put on said duct 22 in a known way.
  • Said tubular-shaped container body 12 comprises a front part 40 with a higher diameter that faces the outlet duct 36; an adjacent intermediate part 42 with a lower diameter than the one of the front part 40 delimiting the sliding axial chamber of the piston 16 and a terminal part 44 whose diameter is extremely lower than the one of the intermediate part 42 that defines the inlet duct 44'.
  • the opposite magnetic bearings 46 and 46' that are properly spaced between them with the use of a known spacing element if necessary, are fit on the external side surface of said intermediate part 42 of the body 12.
  • the coil 14 is in its turn fit on the body 12 so that it can comprise said bearings 46, 46'.
  • the coil 14 is stabilized with known means that are for instance made of a shaped elastic ring 48 that matches with a face of the coil and a shoulder 50 placed on the body 12 between the front part 40 and the intermediate one 42 with a lower diameter that matches with the opposite face.
  • a magnetic bushing 52 Inside said container body 12 in the central-lower part facing the inlet duct 44', a magnetic bushing 52, preferably made of steel with a low magnetic residual content, is advantageously placed.
  • the external side surface of said magnetic bearing 52 has differentiated diameters and defines a rear area 54 that faces the duct 44' with a diameter that is equal or slightly lower than the internal one of the intermediate part 42 of the body 12 and an adjacent front area 56 facing the outlet hole or duct 36 with a lower diameter. Said areas 54 and 56 with different diameters form a matching shoulder 58 for the rear spring 20'.
  • the lower end of the magnetic bushing 52 matches with the body 12 in the intermediate part 42 near the narrowing of the terminal part 44 that defines the inlet duct 44'.
  • the axial sliding return of the piston 16 is obtained by known means such as the couple of helical springs 20 and 20' previously described that cooperate with the piston.
  • the power of the coil 14 is obtained, for example, by a conventional couple of electric connections of the fast-on 62 type.
  • the motor pump object of the present invention is highly efficient thanks to the presence of the magnetic bushing 52 that being aligned with the sliding axis of the piston 16 with one of its ends, it is close to the piston and therefore at a lower distance between the latter and one of the two magnetic bushings 46, 46' when it is placed in the position reached by the piston 16 during the loading of the rear spring 20', generally near the terminal part 44 of the body 12.
  • the interaction between the bushing 52 and the two bearings 46, 46' creates a magnetic field whose intensity is higher than the one of the two bearings 46, 46' only and it therefore increases the magnetic attraction force exerted on the piston 16 and the one exerted on the fluid going out of the delivery duct 22.
  • the motor pump manufactured according to the above description does not imply impediments or additional costs caused by the size increase of the coil and of the relevant wiring coils, while the magnetic bushing 52 can be easily obtained and installed at a low cost.

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Electromagnetic Pumps, Or The Like (AREA)
  • Devices For Conveying Motion By Means Of Endless Flexible Members (AREA)
  • Forklifts And Lifting Vehicles (AREA)
  • Lubricants (AREA)
  • Glass Compositions (AREA)
  • Resistance Heating (AREA)
  • Sorption Type Refrigeration Machines (AREA)
EP03010665A 2002-05-23 2003-05-13 Hydraulische elektromagnetische Motorpumpeneinheit mit Freikolbenentspanner Expired - Lifetime EP1365149B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ITMI20020271U 2002-05-23
IT000271U ITMI20020271U1 (it) 2002-05-23 2002-05-23 Elettropompa migliorata

Publications (3)

Publication Number Publication Date
EP1365149A2 true EP1365149A2 (de) 2003-11-26
EP1365149A3 EP1365149A3 (de) 2003-12-17
EP1365149B1 EP1365149B1 (de) 2006-09-20

Family

ID=29287862

Family Applications (1)

Application Number Title Priority Date Filing Date
EP03010665A Expired - Lifetime EP1365149B1 (de) 2002-05-23 2003-05-13 Hydraulische elektromagnetische Motorpumpeneinheit mit Freikolbenentspanner

Country Status (4)

Country Link
EP (1) EP1365149B1 (de)
AT (1) ATE340306T1 (de)
DE (1) DE60308440T2 (de)
IT (1) ITMI20020271U1 (de)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ITMI20101900A1 (it) * 2010-10-18 2012-04-19 Olab Srl Pompa a vibrazione atta a trattare anche fluidi gassosi, in particolare aria.
CN107795452A (zh) * 2012-09-26 2018-03-13 奥博迪克斯股份有限公司 一种电磁泵
IT201700060837A1 (it) * 2017-06-05 2018-12-05 Ceme Spa Motopompa idraulica elettromagnetica con pistone flottante

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9816496B2 (en) 2014-04-25 2017-11-14 Sysko Ag Oscillating armature pump with a flux-conducting element

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4749343A (en) * 1986-08-08 1988-06-07 Facet Enterprises, Inc. High pressure fluid pump
EP0288216A1 (de) * 1987-04-15 1988-10-26 Eaton S.A.M. Elektrische Flüssigkeitspumpe
EP1001167A2 (de) * 1998-11-13 2000-05-17 Mikuniadec Corporation Elektromagnetische Pumpe
EP1205663A1 (de) * 2000-11-10 2002-05-15 C.E.M.E. Engineering S.p.A. Doppelt wirkendes Pumpenventil

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4749343A (en) * 1986-08-08 1988-06-07 Facet Enterprises, Inc. High pressure fluid pump
EP0288216A1 (de) * 1987-04-15 1988-10-26 Eaton S.A.M. Elektrische Flüssigkeitspumpe
EP1001167A2 (de) * 1998-11-13 2000-05-17 Mikuniadec Corporation Elektromagnetische Pumpe
EP1205663A1 (de) * 2000-11-10 2002-05-15 C.E.M.E. Engineering S.p.A. Doppelt wirkendes Pumpenventil

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ITMI20101900A1 (it) * 2010-10-18 2012-04-19 Olab Srl Pompa a vibrazione atta a trattare anche fluidi gassosi, in particolare aria.
CN107795452A (zh) * 2012-09-26 2018-03-13 奥博迪克斯股份有限公司 一种电磁泵
CN107795452B (zh) * 2012-09-26 2020-02-07 奥博迪克斯股份有限公司 一种电磁泵
IT201700060837A1 (it) * 2017-06-05 2018-12-05 Ceme Spa Motopompa idraulica elettromagnetica con pistone flottante
WO2018224903A1 (en) * 2017-06-05 2018-12-13 Ceme S.P.A. Hydraulic, electromagnetic floating-piston motor pump
CN110998091A (zh) * 2017-06-05 2020-04-10 西米股份公司 液压、电磁式浮动活塞电动泵
CN110998091B (zh) * 2017-06-05 2022-04-26 西米股份公司 液压、电磁式浮动活塞电动泵

Also Published As

Publication number Publication date
ITMI20020271U1 (it) 2003-11-24
ATE340306T1 (de) 2006-10-15
EP1365149A3 (de) 2003-12-17
DE60308440D1 (de) 2006-11-02
EP1365149B1 (de) 2006-09-20
DE60308440T2 (de) 2007-09-20

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