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
  • F04B35/00—Piston pumps specially adapted for elastic fluids and characterised by the driving means to their working members, or by combination with, or adaptation to, specific driving engines or motors, not otherwise provided for
  • F04B35/04—Piston pumps specially adapted for elastic fluids and characterised by the driving means to their working members, or by combination with, or adaptation to, specific driving engines or motors, not otherwise provided for the means being electric
  • F04B35/045—Piston pumps specially adapted for elastic fluids and characterised by the driving means to their working members, or by combination with, or adaptation to, specific driving engines or motors, not otherwise provided for the means being electric using solenoids
• • 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
  • F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
  • F04B39/0005—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00 adaptations of pistons
• • 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
  • F04B2201/00—Pump parameters
  • F04B2201/02—Piston parameters
  • F04B2201/0201—Position of the piston

Definitions

• the present invention concerns a vibration pump (hereafter also referred to simply as "pump”) substantially extending along a longitudinal axis x-x. Therefore, the terms “axial”, “longitudinal”, “transversal” and “radial” as used in the following description should be considered to refer to said longitudinal axis x-x.
• the pump further comprises a solenoid 4 arranged around the hollow body or cylinder 6 and configured for actuating piston or core 2 electromagnetically .
• ferromagnetic elements 5, 5' are laterally spaced apart and define at least one perimetrical interruption in between.
• ferromagnetic elements 5, 5' define, between themselves, a pair of such perimetrical interruptions, designated by references G, G'. Due to the above-mentioned features, the transversal distance between ferromagnetic elements 5, 5' and core 2 is considerably reduced. In other words, between core 2 and ferromagnetic elements 5, 5' - which contribute to effectively conducting the magnetic flux generated by solenoid 4 towards core 2 - only cylinder 6 is transversally interposed, without any other interstices or gaps that would cause a substantial dispersion of the magnetic flux.
• Cylinder 6 and the at least one ferromagnetic element 5, 5' are configured in a manner such that the at least one recess 42 defining the communication duct is absent between the at least one ferromagnetic element 5, 5' and core 2. Therefore, with reference to a transversal or radial direction (e.g. relative to a longitudinal axis x-x of cylinder 6), between the at least one ferromagnetic element 5, 5' and core 2 there is no recess 42.
• cylinder 6 extends along a longitudinal axis x-x. With reference to a radial direction relative to longitudinal axis x-x (Fig. 7), between ferromagnetic element 5, 5' and core 2 there is only a lateral surface of cylinder 6.
• Both groups or pairs of ferromagnetic elements 5, 5' are situated in a circumferential position around cylinder 6. Such groups are aligned along axis x-x.
• the at least one ferromagnetic element 5, 5' may be shaped like an arc of circumference.
• the pump comprises a plurality of groups of ferromagnetic elements 5 (or 5'), wherein each group comprises more than one pair of ferromagnetic elements 5 (or 5'), wherein cylinder 6 and ferromagnetic elements 5 (or 5') are configured in a manner such that the at least one recess 42 defining the communication duct is absent between them.
• the peripheral development of the at least one ferromagnetic element 5, 5' around cylinder 6 is delimited by the at least one protrusion 48.
• protrusion 48 there are two protrusions 48, between which the pairs of ferromagnetic elements 5, 5' are arranged.
• protrusion 48 is parallel to axis x-x of cylinder 6.
• protrusion 48 conveniently follows the development of respective recess 42.
• the two ends of ferromagnetic elements 5 rest on protrusions 48.
• Sensing means 24 are adapted to sense magnetic field variations caused by the rotation of impeller 20 and of magnet 22 integral therewith.
• the sensing means may be of the electric, electronic or magnetic type, such as, for example, a magnetic sensor.
• Impeller 20 is adapted to rotate about an axis of rotation x-x, which is, in particular, coaxial to core 2.
• Impeller 20 is conveniently supported in rotation by a support 26.
• Support 26 may be, for example, made of ferromagnetic, in particular metallic, material; as an alternative, support 26 may be made of plastic material.
• Said support 26 has a pin 28 inserted in a matching recess in impeller 20 to allow rotation thereof.
• cylinder 6 is made of plastic material.
• Recesses 42 defining the communication ducts are preferably made during the moulding of cylinder 6, e.g. by injection moulding.
• Other elements of the pump may also be made of plastic, such as cover 32, housing 40, etc.
• transversal protrusion 46 the external surface of hollow body 6 has a transversal protrusion 46.
• Transversal protrusion 46 and protrusions 48 define a plurality of seats 50 in which said ferromagnetic elements 5, 5' are situated, e.g. inserted before being assembled with solenoid 4.
• transversal protrusion 46 is substantially annular in shape, e.g. like a collar transversally protruding around hollow body 6.
• Figure 10 illustrates a variant embodiment of the transversal protrusion, designated as 146.
• core 2 has a substantially circular cross- section. More preferably, the inner cavity of core 2 also has a substantially circular cross-section.
• This pump also comprises a pair of elements of ferromagnetic material 52, each one of them being situated in hollow body 6 within a longitudinal portion or tract 42a of a respective recess 42.
• the above mentioned longitudinal portion or tract 42 is arranged transversally between hollow body 6 and the region in which piston 2 is adapted to slide. This makes the magnetic flux that moves piston 2 more effective.
• a corresponding element of ferromagnetic material associated with the recess.

Landscapes

• Engineering & Computer Science (AREA)
• Mechanical Engineering (AREA)
• General Engineering & Computer Science (AREA)
• Physics & Mathematics (AREA)
• Fluid Mechanics (AREA)
• Electromagnetic Pumps, Or The Like (AREA)
• Structures Of Non-Positive Displacement Pumps (AREA)

Applications Claiming Priority (2)

Publications (1)

Family

ID=62223074

Family Applications (1)

Country Status (3)

Families Citing this family (2)

Family Cites Families (4)

• 2018
  • 2018-02-27 IT IT102018000003064A patent/IT201800003064A1/it unknown
• 2019
  • 2019-02-27 EP EP19711715.3A patent/EP3759347A1/de not_active Withdrawn
  • 2019-02-27 WO PCT/IB2019/051555 patent/WO2019166954A1/en not_active Ceased

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