EP2711548B1 - Pompe à vibration - Google Patents

Pompe à vibration Download PDF

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Publication number
EP2711548B1
EP2711548B1 EP13185445.7A EP13185445A EP2711548B1 EP 2711548 B1 EP2711548 B1 EP 2711548B1 EP 13185445 A EP13185445 A EP 13185445A EP 2711548 B1 EP2711548 B1 EP 2711548B1
Authority
EP
European Patent Office
Prior art keywords
closure member
valve seat
pump
coil
moving piston
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.)
Active
Application number
EP13185445.7A
Other languages
German (de)
English (en)
Other versions
EP2711548A2 (fr
EP2711548A3 (fr
Inventor
Giulio Croci
Sergio Porelli
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.)
ARS Elettromeccanica Srl
Original Assignee
ARS Elettromeccanica Srl
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 ARS Elettromeccanica Srl filed Critical ARS Elettromeccanica Srl
Publication of EP2711548A2 publication Critical patent/EP2711548A2/fr
Publication of EP2711548A3 publication Critical patent/EP2711548A3/fr
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Publication of EP2711548B1 publication Critical patent/EP2711548B1/fr
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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
    • 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
    • F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
    • F04B53/14—Pistons, piston-rods or piston-rod connections
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F7/00—Magnets
    • H01F7/06—Electromagnets; Actuators including electromagnets
    • H01F7/08—Electromagnets; Actuators including electromagnets with armatures
    • H01F7/10—Electromagnets; Actuators including electromagnets with armatures specially adapted for alternating current
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F7/00—Magnets
    • H01F7/06—Electromagnets; Actuators including electromagnets
    • H01F7/08—Electromagnets; Actuators including electromagnets with armatures
    • H01F7/16—Rectilinearly-movable armatures
    • H01F7/1607—Armatures entering the winding

Definitions

  • the present invention relates to a vibration pump comprising a moving piston in a pump body bounded by a coil, which moving piston cooperates with a second valve arranged in a discharge conduit formed in a communication conduit and with a first valve arranged in the communication conduit, said communication conduit being proximate to the suction port, said first and said second valves having a through hole therebetween.
  • the through hole has a lower opening and an upper opening, whereas said first valve comprises an upper end and a lower end.
  • These pumps are generally used for moving fluids, typically water, in devices such as espresso machines and iron boilers.
  • the devices in which these pumps are installed define their construction features and particularly vibration pumps are required to be easily inspected and disassembled, and to have a small size to minimize space requirements.
  • the parts that are generally used and connected to the intake pipe of pumps include the priming valve required for pump priming.
  • This valve is important to ensure that the pump may be restarted, but is a problematic component, as it increases the dimensions of the pump and often causes malfunctioning.
  • vibration pumps are often used in food processing devices, such as coffee machines, they must allow easy inspection, to ensure a high cleanness level and prevent the formation of agents that may damage the health of users.
  • a further drawback of prior art vibration pumps is the difficulty of replacing their individual parts, which is associated with the construction of the pump, obtained by "packing" the various parts of the pump using a deep-drawn bushing that locks the pump body in position relative to the coil.
  • this vibration pump should be manufactured with relatively simple and inexpensive processes, to allow easy fabrication and assembly of the various parts and provide the features that are not available in the prior art, such as the self-priming feature, without requiring the vibration pump to be combined with additional parts that would increase the dimensions of the pump, thereby affecting standardization and, as a result, easy production.
  • the present invention achieves the above purposes by providing a pump as described hereinbefore, in which the first valve abuts by its top end the lower opening of the through hole and by its bottom end the upper opening of the above mentioned moving piston.
  • the vibration pump of the present invention comprises a pump body that has a conduit for communication between a suction port and a discharge port, in which a fluid flows from the suction port to the discharge port.
  • the communication conduit is axially surrounded by a coil that generates a magnetic field for translating a moving piston, the latter being slidably and sealingly received in the communication conduit and having a passage for fluid that extends from a lower mouth located proximate to the suction port to an upper mouth.
  • a first valve seat and a first closure member cooperating with said first valve seat are provided at said upper mouth, which closure member is mounted in such a manner as to be movable between a position in which it interferes with the valve seat by closing the passage, i.e. a so-called valve closing position, and a position in which the first closure member does not interfere with the valve seat, whereby the passage is open, i.e. a so-called valve opening position.
  • Lower elastic means and upper elastic means are also provided between the moving piston and a lower stationary abutment wall and an upper stationary abutment wall respectively, for axially pushing the moving piston toward ejection from the communication conduit.
  • the upper elastic means have a silencing function, i.e. reduce the noise generated by the movement of the plunger in the communication conduit, by preventing impact thereof with the upper wall of the communication channel.
  • the operation is such that, when the coil is energized, the moving piston is drawn into the communication conduit by the magnetic flux, against the action of the elastic pushing means, whereas when the coil is de-energized the moving piston is pushed by the elastic means toward ejection from the communication conduit.
  • the motion of the moving piston is transferred to the first closure member due to the presence of drive members consisting of an elastic element, which is also stressed by the pressure of the inflowing fluid, the first closure member having one side exposed to fluid pressure.
  • the first valve seat communicates with a second valve seat, which is provided at the discharge port, via a through hole.
  • a second closure member is provided, which cooperates with the second valve seat and which, like the first closure member, is mounted in such a manner as to be movable between a position in which it interferes with the second valve seat by closing the through hole, i.e. a so-called valve closing position, and a position in which it does not interfere with the second valve seat, whereby the through hole is open, i.e. a so-called valve opening position.
  • the first closure member consists of a circular body having a flat top end, such that, when the coil is de-energized, the flat top end abuts proximate to the inlet of the through hole.
  • This configuration allows normal operation of prior art vibration pumps and ensures the self-priming feature because, as more clearly shown by certain embodiments that will be described below, the particular shape of the first closure member allows the moving piston to be displaced to a greater extent, and causes the flat top end to about proximity to the inlet of the through hole.
  • the reduced size of the various parts of the vibration pump makes it particularly difficult to secure the spring that transfers piston motion to the first closure member, whereby the vibration pump of the present invention will preferably but not exclusively have two possible configurations.
  • the first closure member has a bottom end with coupling means for attachment to the elastic element, which consist of a hook element engaging in a corresponding loop of the elastic element.
  • the first closure member has a bottom end consisting of an elongate member extending toward the lower mouth, which elongate member has a through hole oriented perpendicular to the longitudinal axis of the pump body, which hole engages in a corresponding loop of the elastic element.
  • the spring connected to the first closure member may be formed in any manner known in the art, but is preferably designed to provide the required elastic force while ensuring an adequate fluid flow.
  • the spring may be arranged to have its turns located at a given distance, or to have a first straight coupling part followed by an elastic part composed of the turns.
  • the second closure member has a side exposed to pressure of the fluid that flows out of the first valve seat, an elastic element being interposed between the second closure member and the discharge port, whose compression/extension opens/closes the second valve seat respectively.
  • the second closure member also has an element that extends toward the first closure member, such that, when the moving piston is in its limit stop position, the element abuts the flat top end of the first closure member.
  • the provision of the element that extends toward the first closure member is a particularly advantageous characteristic because, especially in case of dry operation, it prevents the second closure member from sticking with the walls of the second valve seat.
  • closure members are generally made of a soft plastic material, such as rubber or the like, when they are not properly lubricated, such as during dry operation, they tend to stick with the walls of the valve seat, thereby affecting pump operation.
  • the moving piston consists of a hollow cylindrical body in which the passage extends from a lower mouth to an upper mouth, the hollow cylindrical body consisting of a lower part proximate to the lower mouth and a radially narrower portion proximate to the upper mouth.
  • the lower part is preferably made of a ferromagnetic material, such as iron or the like, coated with a plastic material.
  • the moving piston is made of metal, but is required to have well-defined properties, i.e. adequate ferromagnetic properties, as well as corrosion-preventing features, and easily magnetizable materials are generally prone to corrosion. Furthermore, it should undergo accurate grinding, to avoid rubbing wear as it moves.
  • the above construction of the piston which is thus composed of a part made of a magnetic material coated with a plastic material, provides important advantages in terms of costs and functions, as it allows the use of an easily magnetizable metal material, such as iron, without caring about corrosion because it is entirely coated with a plastic material.
  • the plastic coating does not require expensive grinding.
  • the radially narrower portion may be made of any material, preferably stainless steel.
  • the coil is housed in an outer casing, which is coaxial with the pump body and encircles its outer surface.
  • the ends of the coil are connected to a power source via a diode and a thermal protection device, which diode and which thermal protection device are both housed in the outer casing.
  • the possibility of housing the thermal protection device in direct connection to the diode, within the thickness of the wall of the outer casing provides a undoubted advantages for the manufacture of the vibration pump of the present invention.
  • the thermal protection device which may be a thermal pellet or the like, may be produced in series with the diode, such that a single part may be simply produced, to be introduced into the outer case and connected to the ends of the coil, without requiring the thermal protection device to be introduced in an outer pocket after production, like in current prior art pumps.
  • the diode and the thermal protection device may be processed in automatic processing lines by simple overmolding, without requiring any later molding that might wear both the thermal protection device and the diode.
  • the diode may be arranged externally and not be integrated in the outer casing, to prevent the diode from being exposed to excessively high temperatures and pressures, which will require the selection high-performance diodes, and lead to an inevitable cost increase.
  • the outer casing is formed of a metal tubular cylindrical body, which holds the coil within the thickness of its side walls.
  • a metal outer casing provides advantages in terms of optimized action of the coil-generated magnetic field, as it allows conveyance of the magnetic flux without requiring especially mounted conveying member.
  • a flow sensor is provided, which axially extends along the discharge port and consists of a coil that encircles the discharge port for sensing the movement of the moving piston.
  • This will advantageously provide a flow sensor with minimized space requirements, to receive pump flow information without requiring connection to a flow sensor external to the pump, that would cause drawbacks in terms of space requirements, connections and operation.
  • the pump body is composed of two parts, i.e. a first part cooperating with a second part.
  • the second part has having a lower annular band which is fitted into an upper circular ring of the first part, the circular ring and the annular band (having at least one hole each, such that, when they are fitted one into the other, the hole on the circular ring is coincident with the hole on the annular band.
  • An element is also provided, which at least partially encircles the circular ring and has an engagement tooth to be fitted into the holes for locking the first part in position to the second part.
  • a pump body made up of two parts can be more easily manufactured and has lower maintenance requirements, because the two parts may be manufactured and processed separately and later coupled.
  • the two parts may be coupled in unremovable or removable fashion.
  • the engaging tooth of the element in the holes may be glued or bonded, or a shape- or friction-fit arrangement may be provided, such that the engaging tooth is fitted into the holes and cause temporary deformation thereof.
  • the two parts are made of plastic.
  • the first part comprises the suction port and the communication conduit
  • the second part comprises the discharge port, the first valve seat and the second valve seat.
  • the first part is fitted into the outer casing of the coil and has at least one lateral tab that cooperates with a corresponding housing seat formed on a support element for supporting the outer casing.
  • This arrangement allows quick coupling of the various parts of the pump, without necessarily requiring the use of deep-drawn bushings to enclose the entire pump body with the remaining parts, like in current prior art pumps.
  • At least two bushings may be interposed between the pump body and the coil, said at least two bushings being spaced by a ring made of an elastic material.
  • This ring is mounted in a compressed configuration and allows the two bushings to be fixed in position, and eliminate any clearance, vibration and relative movement of the various parts of the pump, particularly the coil and the pump body.
  • the object of the present document is to claim construction features that are designed to improve the operation of prior art vibration pumps.
  • the vibration pump of the present invention comprises a pump body 1 that has a communication conduit 21 for communication between a suction port 22 and a discharge port 23, in which communication conduit 21 a fluid flows from the suction port 22 to the discharge port 23.
  • a coil 4 is provided, which axially extends along the communication conduit 22, preferably with the coil turns 4 coaxial with the communication conduit 21.
  • the coil 4 is designed to generate a magnetic field for translating a moving piston 3, which is slidably and sealingly received in the communication conduit 21 and has a passage 30 for fluid that extends from a lower mouth 31 located proximate to the suction port 22 to an upper mouth 32.
  • a first valve seat 24 and a first closure member 33 cooperating with such first valve seat 24 are provided at the upper mouth 32, which closure member is mounted in such a manner as to be movable between a position in which it interferes with the valve seat 24 by closing the passage 30, i.e. a so-called valve closing position, and a position in which the first closure member 35 does not interfere with the valve seat 24, whereby the passage 30 is open, i.e. a so-called valve opening position.
  • the moving piston 3 is supported by elastic means, and particularly lower elastic means 13 are placed between the moving piston 3 and a lower stationary abutment wall 11 and upper elastic means 14 are placed between the moving piston 3 and an upper abutment wall 12.
  • the moving piston 3 is connected with drive members for transferring the motion thereof to the first closure member 33, which members include an elastic element 34. Also, the first closure member has one side exposed to the pressure of the inflowing fluid.
  • the elastic element 34 may be any spring known in the art.
  • Figure 2e shows a possible embodiment thereof, in which the elastic element 34 is composed of a first part 342 connected to the first closure member 33 and a second part 343 consisting of metal turns.
  • the first part 342 ensures coupling to the first closure member 33, thereby affording a high fluid flow into the radially narrowing portion 37 of the moving piston 3.
  • the second part 343 provides the elasticity required of the elastic element 34.
  • the elastic element 34 may consist of a spring with turns located at a given distance, to allow fluid flow.
  • the first valve seat 24 communicates with a second valve seat 25 via a through hole 26, said second valve seat being provided at the discharge port 23.
  • the second valve seat 25 cooperates with a second closure member 35, which is mounted in such a manner as to be movable between a position in which it interferes with the second valve seat 25 by closing the through hole 26, i.e. a so-called valve closing position, and a position in which the second closure member 35 does not interfere with the second valve seat 25, whereby the through hole 26 is open, i.e. a so-called valve opening position.
  • the first closure member 33 consists of a circular body having a flat top end 331, such that, when the coil 4 is de-energized, the flat top end 331 abuts proximate to the inlet of the through hole 26.
  • the coil 4 When the coil 4 is energized through a power source that supplies electric current into the coil 4, it generates a magnetic field that pushes the moving piston 3 downwards, i.e. toward the suction port 22.
  • the fluid that flows into the lower mouth 31 acts upon the side of the closure member 33 in the upper mouth 32 and pushes the closure member 33 toward the second valve seat 25.
  • the first valve seat 24 opens and allows the flow to exit the passageway created between the side walls 301 of the passage 30 and the first closure member 33.
  • the coil 4 is de-energized and the lower elastic elements 13 push the moving piston to extraction from the communication conduit 21, such that the first closure member presses the fluid between the two valve seats 24 and 25 by its flat top end 331.
  • the second valve seat 25 can be opened and the second closure member 35 is pushed toward the discharge port 23, whereupon the fluid flows beyond the second valve seat 25 and comes out of the discharge port 23.
  • the second closure member 35 has a side exposed to pressure of the fluid that flows out of the first valve seat 24, an elastic element 38 being interposed between the second closure member 35 and the discharge port 23, whose compression/extension opens/closes the second valve seat 25 respectively.
  • a variant embodiment of the first closure member 33 has a bottom end with coupling means for attachment to the elastic element 34, which consist of a hook element 332 engaging in a corresponding loop 341 of the elastic element 34.
  • the hook element 332 has a lateral opening 333 for facilitating insertion of the loop 341, said opening 333 extending toward the elastic element 34 through a slit that widens to form a housing seat 334 for stably housing the loop 341.
  • the first closure member 33 has a bottom end consisting of an elongate member 335 extending toward the lower mouth 31, and having a through hole oriented perpendicular to the longitudinal axis of the pump body 1, which hole engages in a corresponding loop 341 of the elastic element 34.
  • the second closure member 35 preferably has an element 351 that extends toward the first closure member 33, such that, when the moving piston 3 is in its limit stop position, the element 351 abuts the flat top end 331 of the first closure member 33.
  • the abutment of the second closure member 35 against the first closure member 33 allows the second closure member to be pushed toward the discharge port 23, whereby the second closure member 35 is moved away from the walls of the second valve seat 25, which is a particularly advantageous feature in case of dry operation of the pump.
  • a housing surface 336 may be formed on the flat top end 331 of the first closure member 33, as shown in Figure 2a .
  • Figures 3a and 3b show the moving piston of the vibration pump of the present invention according to a possible embodiment, as viewed in in a perspective view and a sectional view along a longitudinal plane respectively.
  • the moving piston 3 consists of a hollow cylindrical body in which the passage 30 extends from a lower mouth 31 to an upper mouth 32.
  • the hollow cylindrical body consists of a lower part 36 proximate to the lower mouth 31 and a radially narrower portion 37 proximate to the upper mouth 32.
  • the lower part 36 and the radially narrower portion 37 may be formed of one piece and from any material that may be suitable for the purpose, and may also be of any length, to conform with the pump body 1.
  • the lower part 36 and the radially narrower portion 37 are two distinct parts, made of different materials.
  • the lower part 36 consists of a core 361 made of a ferromagnetic material, such as iron or the like, coated with plastic coating layer 362.
  • the radially narrower portion 37 is preferably made of stainless steel, and may be fixed to the lower part 36 by embedding its lower terminal 371 in the plastic coating 362.
  • the plastic coating 362 may also cover the entire radially narrower portion 37.
  • the moving piston comprises two openings 38 for discharging any excess liquid that flows in through the lower mouth 31 and is not pushed into the discharge port 23.
  • Figures 4a and 4b show two views of the outer casing of the coil, for prior art vibration pumps and for the vibration pump of the present invention respectively.
  • the coil 4 is housed in an outer casing 41 which is coaxial with the pump body 1 and surrounds the outer surface of the pump body 1.
  • the outer casing 41 is generally obtained by a plastic overmolding process that is designed to cover the coil.
  • the ends of the coil are connected to a power source through a diode and through contacts 411 connected to electric current.
  • a thermal protection device is also provided, which is connected to the contacts 411 to avoid malfunctioning or failure of the circuit.
  • the outer case 41 of prior art pumps has an outer pocket 412 for receiving the thermal protection device, particularly a thermal pellet 412 which is also later connected to the contacts 411.
  • the vibration pump of the present invention eliminates the outer pocket 412 while maintaining the presence of the thermal protection device 413.
  • Figure 4b shows a view as taken along a plane perpendicular to the longitudinal plane of the outer casing 41.
  • the outer casing 41 surrounds the coil 4, which is supported by a support element, formed of one piece with or separately from said outer casing 41, in which the pump body 1 is introduced, particularly through the through hole 415.
  • the outer casing may be formed and fixed to the coil in any known manner, but is preferably obtained by overmolding of a plastic material adapted to cover the coil 4.
  • the diode and the thermal protection device 413 are introduced into the outer casing 41, to be later connected to the contacts 411.
  • the diode and the thermal protection device 413 are joined into a single part 417, which is later introduced into the outer casing 41 in any manner.
  • the outer casing 41 may have a housing compartment 416 formed in its thickness, for receiving both the diode and the thermal protection device 413, i.e. the part 417.
  • the diode and the thermal protection device 413 are introduced into the housing compartment 416, they are connected to the contacts 411 preferably directly during fabrication of the coil 4, which will avoid the need of making connections after mounting the outer casing 41 to the pump body 1.
  • Figure 4c shows a possible embodiment of the above mentioned part 417, which consists of an outer enclosure that contains the diode and the thermal protection element.
  • the part 417 has two end elements 4171 that are later designed to be connected to the contacts 411.
  • Figure 4d shows a possible embodiment of the pump of the present invention, in which the diode 419 is connected outside the outer casing and is visible.
  • this configuration facilitates soldering of the diode to the electric contacts.
  • Figures 5a and 5b show two views of the flow sensor of the vibration pump of the present invention, namely a perspective view and a sectional view as taken along a longitudinal plane.
  • Figure 5a shows the discharge port 23 around which a flow sensor 5 extends, the latter consisting of a coil 51 that encircles the discharge port 23.
  • Figure 5b shows the coil 51 that detects the movement of the moving piston 3 and generates an electric current proportional to the number of displacements of the moving piston 3, the electric current being detected by connecting the ends of the coil 52 to any device, such as an ammeter or the like known in the art.
  • One of the purposes of the vibration pump of the present Patent Application is the formation of a pump body 1 that can be easily assembled and inspected, and further has a low fabrication cost.
  • Figs. 6a to 6c show a possible embodiment of the pump body 1 of the pump of the present invention.
  • the pump body 1 is composed of two parts, i.e. a first part 15 that cooperates with a second part 16, i.e. such that the second part 16 fits into the first part 15 and is coupled thereto.
  • the second part 16 has having a lower annular band 161 which is fitted into an upper circular ring 151 of the first part 15.
  • the second part 16 may be locked in position with the first part 15 by gluing, i.e. by placing a layer of glue material on the outer surface of the lower annular band 161 and/or the inner surface of the circular ring 11.
  • both the circular ring 151 and the annular band 161 may be designed with at least one hole 152, 162 each such that, when fitted one into the other, the hole on the circular ring 151 coincides with the hole on the annular band 161.
  • the second part 16 is fixed to the first part 15 by means of an element 17 that at least partially encircles the circular ring 151 and has an engagement tooth 171 to be fitted into the holes 152, 162 for locking the first part 15 in position with the second part (16).
  • two half-round elements 17 are provided, each having two engaging teeth 171 that encircle almost the entirety of the circular ring 151.
  • the first part 15 comprises the suction port 22 and the communication conduit 21, whereas the second part 16 comprises the discharge port 23 the first valve seat 24 and the second valve seat 25.
  • the first part 15, the second part 16 and the elements 17 are preferably made of plastic, which will provide the advantages related to this material, i.e. low cost and easy processing and will allow a form fit between the engaging teeth 171 and the holes 152, 162.
  • the teeth 171 may be fitted into the holes 152 and 162, with the shape of each engaging tooth being temporarily deformed to create a joint once the tooth 171 has been inserted.
  • This method is known in the art and may be used as an alternative to any prior art method for fitting the teeth 1717 in the holes.
  • the moving piston 3 is inserted, with the elastic means that support it, whereupon the second part is introduced into the first part and if fixed using the circular elements 17.
  • the first part 15 is fitted into the outer casing 41 of the coil 4 and has at least one lateral tab 153 that cooperates with a corresponding housing seat formed on a support element 6 for supporting the outer casing 41.
  • the first part 15 of the pump body 1 has two lateral tabs 153 that engagingly fit into two corresponding housing seats of the support element 6.
  • the two lateral tabs 153 are arranged in such positions that the plane that joins them is perpendicular to the junction plane of the two half-round elements 17, such that the vibrations generated by the movement of the moving piston 3 do not loosen the joint among all the parts of the vibration pump of the present invention.
  • the support element 6 has the purpose of optimizing the action of the magnetic field generated by the coil 4 by conveying the magnetic flux.
  • FIGS 7a to 7c show a variant embodiment of the vibration pump of the present invention, in which the support element 6 is not used.
  • the outer casing 41 consists of a metal tubular cylindrical body.
  • the outer casing 41 has a housing compartment 418 in the thickness of the side walls, for accommodating the coil 4.
  • the coil 4 is wound around the support element and both are accommodated in the thickness of the side walls of the outer metal casing 41.
  • the outer metal casing 41 has an aperture 419 for receiving the contacts 411 that are designed to be connected to the ends of the coil to supply power thereto.
  • an outer casing 41 made of metal allows the magnetic flux to be conveyed without using the support element 6.
  • Figure 7c shows how the various parts of the pump may be assembled using the variant embodiment of the outer casing 41 as shown in the previous figures.
  • the pump body 1 is introduced into the through hole 415, whereupon it is locked in position by an upper bushing 71 and a lower bushing 72.
  • the variant embodiment of the outer casing 41 of Figures 7a to 7c may be provided in combination with any pump body 1, namely also with the pump body 1 of Figures 6a and 6b .
  • Figures 8a and 8b show a variant embodiment of the pump, as viewed in sectional and exploded views respectively, where two bushings 8 are interposed between the pump body 1 and the coil 4.
  • An elastic ring 81 is placed between the two bushings 8 and is mounted in a compressed configuration, such that once the parts of the pump are assembled, the elastic ring 81 axially pushes the two bushings 8 and holds them in position.
  • the decompression of the elastic ring 81 locks the coil 4 in position and avoids any relative rotation and any vibration among the various parts of the pump.
  • the pump body 1 may be at least partially equipped with a rough outer surface, which helps to reduce the rotation of the pump 1 caused by the movement of the moving piston 3.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Electromagnetic Pumps, Or The Like (AREA)
  • Details Of Reciprocating Pumps (AREA)
  • Reciprocating Pumps (AREA)

Claims (13)

  1. Pompe vibrante comprenant un piston mobile (3) situé dans un corps de pompe (1) délimité par une bobine (4), ledit piston mobile (3) coopérant avec une deuxième vanne située dans un conduit de décharge formé dans un conduit de communication (21) et avec une première vanne située dans le conduit de communication (21), ledit conduit de communication étant situé près d'un orifice d'aspiration (21), un trou débouchant (26) étant disposé entre lesdites première et deuxième vannes (26), ledit trou débouchant (26) possédant une ouverture inférieure et une ouverture supérieure, ladite première vanne comprenant une extrémité supérieure et une extrémité inférieure,
    ladite première vanne venant en appui contre l'ouverture inférieure dudit trou débouchant (26) par ladite extrémité supérieure de ladite première vanne et contre une ouverture inférieure dudit piston mobile (3) par ladite extrémité inférieure de ladite première vanne, caractérisée en ce que ledit corps de pompe (1) est composé de deux parties, une première partie (15) coopérant avec une deuxième partie (16), ladite deuxième partie (16) possédant une bande annulaire inférieure (161) destinée à s'insérer dans une bague circulaire supérieure (151) de ladite première partie (15), ladite bague circulaire supérieure (151) et ladite bague annulaire inférieure (161) comportant au moins un trou (152, 162) chacun, de manière que, lorsqu'elles montées l'une dans l'autre, le trou sur la bague circulaire supérieure (151) coïncide avec le trou sur la bande annulaire inférieure (161),
    comportant au moins un élément (17) qui entoure au moins en partie ladite bague circulaire supérieure (151) et possède une dent d'engagement (171) à insérer dans les trous (152, 162) pour verrouiller ladite première partie (15) en position avec ladite deuxième partie (16).
  2. Pompe vibrante selon la revendication 1, comprenant un corps de pompe (1) avec un conduit de communication (21) s'étendant entre un orifice d'aspiration (22) et un orifice de décharge (23), un fluide s'écoulant dans ledit conduit de communication (21) dudit orifice d'aspiration (22) audit orifice de décharge (23), la bobine (4) s'étendant en direction axiale le long dudit conduit de communication (21) pour générer un champ magnétique pour la translation d'un piston mobile (3), ledit piston mobile (3) étant reçu de façon coulissante et étanche dans ledit conduit de communication (21) et ledit piston mobile (3) possédant un passage (30) pour le fluide, qui s'étend d'une bouche inférieure (31) située près dudit orifice d'aspiration (22) à une bouche supérieure (32), un premier siège de vanne (24) et un premier obturateur (33) coopérant avec ledit premier siège de vanne (24) situé au niveau de ladite bouche supérieure (32), ledit premier obturateur (33) étant monté de façon à être mobile entre une position de fermeture de la vanne, dans laquelle il vient en interférence avec ledit premier siège de vanne (24) de façon à fermer le passage (30), et une position d'ouverture de la vanne dans laquelle ledit premier obturateur (33) n'interfère pas avec ledit premier siège de vanne (24), de façon que le passage (30) soit ouvert, des moyens élastiques inférieurs (13) et des moyens élastiques supérieurs (14) étant prévus entre ledit piston mobile (3) et respectivement une paroi d'appui fixe inférieure (11) et une paroi d'appui fixe inférieure (12) pour pousser en direction axiale ledit piston mobile (3), vers son éjection du conduit de communication (21) de manière que, lorsque la bobine (4) est excitée, le piston mobile (3) est attiré dans le conduit de communication (21) par le flux magnétique, contre l'action des moyens de poussée élastiques (13, 14), et de manière que, lorsque la bobine est désexcitée, le piston mobile (3) soit poussé par lesdits moyens élastiques (13) vers son éjection du conduit de communication (21), ledit piston mobile (3) étant relié à des éléments d'entraînement, aptes à transférer son mouvement au premier obturateur (33), lesdits éléments d'entraînement comprenant un élément élastique (34), et le premier obturateur (33) ayant un côté exposé à la pression du fluide en entrée, ledit premier siège de vanne (24) communiquant avec un deuxième siège de vanne (25) à travers un trou débouchant (26), ledit deuxième siège de vanne étant situé au niveau dudit orifice de décharge (23), et un deuxième obturateur (35) étant prévu, coopérant avec ledit deuxième siège de vanne (25), ledit deuxième obturateur (35) étant monté de façon à être mobile entre une position de fermeture de la vanne dans laquelle il vient en interférence avec ledit deuxième siège de vanne (25), de façon à fermer le trou débouchant (26) et une position d'ouverture de la vanne dans laquelle ledit deuxième obturateur (35) n'interfère pas avec ledit deuxième siège de vanne (25), de façon que le trou débouchant (26) soit ouvert, le premier obturateur (33) étant constitué d'un corps circulaire comportant une extrémité supérieure plate (331) de façon que, lorsque la bobine (4) est désexcitée, ladite extrémité supérieure plate (331) vienne en appui près de l'entrée dudit trou débouchant (26).
  3. Pompe vibrante selon la revendication 2, dans laquelle ledit premier obturateur (33) possède une extrémité inférieure avec des moyens d'accouplement permettant sa fixation audit élément élastique (34) lesdits moyens d'accouplement étant constitué d'un élément d'accrochage (332) s'engageant dans une boucle correspondante (341) de l'élément élastique (34).
  4. Pompe vibrante selon la revendication 2, dans laquelle ledit premier obturateur (33) possède une extrémité inférieure constituée d'un élément allongé (335) s'étendant vers ladite bouche inférieure (31), ledit élément allongé possédant un trou débouchant perpendiculaire à l'axe longitudinal dudit corps de pompe (1), ledit trou débouchant s'engageant dans une boucle correspondante (341) de l'élément élastique (34).
  5. Pompe selon les revendications 2 à 4, dans lequel ledit élément élastique (34) possède une première partie (342) composée d'un élément allongé, ledit élément allongé s'engageant avec ledit premier obturateur (33), ladite première partie (342) étant reliée à une deuxième partie (343) constituée d'une pluralité de spires métalliques.
  6. Pompe vibrante selon l'une ou plusieurs des revendications précédentes, dans laquelle ledit deuxième obturateur (35) possède un côté exposé à la pression du fluide sortant dudit premier siège de vanne (24), un élément élastique (38) étant interposé entre ledit deuxième obturateur (35) et ledit orifice de décharge (23), dont la compression et l'extension permettent respectivement l'ouverture et la fermeture du deuxième siège de vanne (25),
    ledit deuxième obturateur (35) possédant également un élément (351) qui s'étend vers ledit premier obturateur (33), de façon que, lorsque ledit piston mobile (3) est dans sa position de fin de course, ledit élément (351) vient en appui contre ladite extrémité supérieure plate (331) dudit premier obturateur (33).
  7. Pompe vibrante selon une ou plusieurs des revendications précédentes, dans laquelle ledit piston mobile (3) est constitué d'un corps cylindrique creux dans lequel ledit passage (30) s'étend d'une bouche inférieure (31) à une bouche supérieure (32), ledit corps cylindrique creux étant constitué d'une partie inférieure (36) située près de ladite bouche inférieure (31) est une partie radialement plus étroite (37) située près de ladite bouche supérieure (32), ladite partie inférieure (36) étant constituée d'un matériau ferromagnétique, comme le fer, revêtu d'un matériau plastique.
  8. Pompe vibrante selon l'une ou plusieurs des revendications précédentes, dans laquelle ladite bobine (4) est logée dans un boîtier externe (41), ledit boîtier externe (41) étant coaxial avec ledit corps de pompe (1) et entourant la surface extérieure dudit corps de pompe (1), les extrémités de ladite bobine (4) étant reliées à une source d'alimentation électrique à travers une diode et un dispositif de protection thermique, ladite diode est ledit dispositif de protection thermique étant logés dans ledit boîtier externe (41).
  9. Pompe vibrante selon une ou plusieurs des revendications précédentes, dans laquelle un boîtier externe (41) est constitué d'un corps cylindrique et tubulaire en métal, ledit corps cylindrique tubulaire logeant ladite bobine (4) dans une épaisseur de ses parois latérales.
  10. Pompe vibrante selon l'une ou plusieurs des revendications précédentes, dans laquelle un capteur de débit (5) s'étend en direction axiale le long du dit orifice de décharge (23), et est constitué d'une bobine (51) qui entoure ledit orifice de décharge (23) pour détecter le mouvement dudit piston mobile (3).
  11. Pompe vibrante selon la revendication 1, dans laquelle ladite première partie (15) comprend ledit orifice d'aspiration (22) et ledit conduit de communication (21), alors que ladite deuxième partie (16) comprend ledit orifice de décharge (23), un premier siège de soupape (24) et un deuxième siège de soupape (25), ladite première partie (15) à ladite deuxième partie (16) étant réalisées en plastique.
  12. Pompe vibrante selon la revendication 1, dans laquelle ladite première partie (15) est reçue dans ledit boîtier externe (41) de la bobine (4) et ladite première partie (15) possède au moins une languette latérale (153) coopérant avec un logement correspondant sur un élément support dudit boîtier externe (41).
  13. Pompe vibrante selon la revendication 1, dans laquelle au moins deux douilles (8) sont interposées entre ledit corps de pompe (1) et ladite bobine (4), lesdites au moins deux douilles (8) étant espacées par une bague (81) constitué d'un matériau élastique.
EP13185445.7A 2012-09-25 2013-09-20 Pompe à vibration Active EP2711548B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT000097A ITGE20120097A1 (it) 2012-09-25 2012-09-25 Pompa a vibrazione

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EP2711548A3 EP2711548A3 (fr) 2014-04-02
EP2711548B1 true EP2711548B1 (fr) 2019-03-06

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IT (1) ITGE20120097A1 (fr)
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CN110513265A (zh) * 2019-09-26 2019-11-29 徐建群 一种防堵电磁泵

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Publication number Priority date Publication date Assignee Title
EP2873857B1 (fr) * 2013-11-15 2020-08-19 ODE (Hk) Company Limited Pompe à fluides
CN209308905U (zh) * 2018-12-07 2019-08-27 深圳华星恒泰泵阀有限公司 一种防堵塞的新型电磁泵
IT201900025225A1 (it) 2019-12-23 2021-06-23 A R S Elettromeccanica Srl Pistone mobile per pompe a vibrazione
CN114001008B (zh) * 2021-11-05 2023-08-18 骏马精密工业(惠州)有限公司 具有流量监测功能的电磁泵
DE102022116095A1 (de) * 2022-06-28 2023-12-28 Sysko AG Systeme & Komponenten Treiberspulenvorrichtung

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GB8709082D0 (en) * 1987-04-15 1987-05-20 Eaton Sa Monaco Electrical fluid pump
IT230356Y1 (it) * 1993-07-15 1999-06-02 Elmetor Srl Elettropompa a pistone con cilindro rivestito con una lamina di materiale autolubrificante
DE29518782U1 (de) * 1995-11-27 1997-03-27 Speck Pumpen Walter Speck Kg Elektromagnetische Kolbenpumpe
IT246634Y1 (it) * 1999-04-09 2002-04-09 Ulka Srl Pistone composito per pompa a vibrazione
IT249882Y1 (it) * 2000-11-10 2003-06-05 C E M E Engineering S P A Pompa con valvola a doppio effetto
CN101294556A (zh) * 2007-04-28 2008-10-29 德昌电机股份有限公司 螺线管泵
EP2101059A1 (fr) * 2008-03-13 2009-09-16 MSG Mechatronic Systems GmbH Pompe électromagnétique avec piston à mouvement alternatif

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CN110513265A (zh) * 2019-09-26 2019-11-29 徐建群 一种防堵电磁泵

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EP2711548A2 (fr) 2014-03-26
EP2711548A3 (fr) 2014-04-02
PT2711548T (pt) 2019-07-10
ES2732485T3 (es) 2019-11-22
ITGE20120097A1 (it) 2014-03-26

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