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GB2597031A - Highly efficient linear motor - Google Patents

Highly efficient linear motor Download PDF

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Publication number
GB2597031A
GB2597031A GB2115618.7A GB202115618A GB2597031A GB 2597031 A GB2597031 A GB 2597031A GB 202115618 A GB202115618 A GB 202115618A GB 2597031 A GB2597031 A GB 2597031A
Authority
GB
United Kingdom
Prior art keywords
coil
forcer
thruster
shaft member
shaft
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
GB2115618.7A
Other versions
GB2597031B (en
GB2597031A8 (en
GB202115618D0 (en
Inventor
H Hutchins Richard
Scott Rust Joseph
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.)
Sentimental Journey LLC
Original Assignee
Sentimental Journey LLC
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
Priority claimed from US16/370,576 external-priority patent/US10601293B2/en
Application filed by Sentimental Journey LLC filed Critical Sentimental Journey LLC
Priority to GB2317594.6A priority Critical patent/GB2621516B/en
Publication of GB202115618D0 publication Critical patent/GB202115618D0/en
Publication of GB2597031A publication Critical patent/GB2597031A/en
Publication of GB2597031A8 publication Critical patent/GB2597031A8/en
Application granted granted Critical
Publication of GB2597031B publication Critical patent/GB2597031B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K3/00—Details of windings
    • H02K3/46—Fastening of windings on the stator or rotor structure
    • H02K3/47—Air-gap windings, i.e. iron-free windings
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K35/00—Generators with reciprocating, oscillating or vibrating coil system, magnet, armature or other part of the magnetic circuit
    • H02K35/06—Generators with reciprocating, oscillating or vibrating coil system, magnet, armature or other part of the magnetic circuit with moving flux distributors, and both coil systems and magnets stationary
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K1/00—Details of the magnetic circuit
    • H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K33/00—Motors with reciprocating, oscillating or vibrating magnet, armature or coil system
    • H02K33/12—Motors with reciprocating, oscillating or vibrating magnet, armature or coil system with armatures moving in alternate directions by alternate energisation of two coil systems
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K41/00—Propulsion systems in which a rigid body is moved along a path due to dynamo-electric interaction between the body and a magnetic field travelling along the path
    • H02K41/02—Linear motors; Sectional motors
    • H02K41/03—Synchronous motors; Motors moving step by step; Reluctance motors
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K41/00—Propulsion systems in which a rigid body is moved along a path due to dynamo-electric interaction between the body and a magnetic field travelling along the path
    • H02K41/02—Linear motors; Sectional motors
    • H02K41/03—Synchronous motors; Motors moving step by step; Reluctance motors
    • H02K41/031—Synchronous motors; Motors moving step by step; Reluctance motors of the permanent magnet type
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K41/00—Propulsion systems in which a rigid body is moved along a path due to dynamo-electric interaction between the body and a magnetic field travelling along the path
    • H02K41/02—Linear motors; Sectional motors
    • H02K41/035—DC motors; Unipolar motors
    • H02K41/0352—Unipolar motors
    • H02K41/0354—Lorentz force motors, e.g. voice coil motors
    • H02K41/0356—Lorentz force motors, e.g. voice coil motors moving along a straight path
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K5/00—Casings; Enclosures; Supports
    • H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
    • H02K5/08—Insulating casings
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K2201/00—Specific aspects not provided for in the other groups of this subclass relating to the magnetic circuits
    • H02K2201/12—Transversal flux machines

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Electromagnetism (AREA)
  • Reciprocating, Oscillating Or Vibrating Motors (AREA)
  • Magnetically Actuated Valves (AREA)
  • Linear Motors (AREA)
  • Valve Device For Special Equipments (AREA)

Abstract

An electrical system including a linear motor in which energized forcer and thruster coils are used for the field and armature elements. In accordance with exemplary embodiments, one or more thruster coils may be provided on a shaft with opposing single or multiple fixed forcer coils. Using coils as the electromagnets for forcer and thruster coils advantageously provides necessary power while also minimizing system weight and decreases in magnetism typically encountered with permanent magnets with rising temperature, resulting in higher and more controllable magnetic forces over varying temperatures. Ferrous elements, such as a ferrous system housing and/or open ferrous containers for the thruster coils may be further included to advantageously focus the magnetic forces. Additionally, multiple forcer and thruster coils may be disposed in various arrangements along the shaft. Exemplary applications include use of such a system for controlling oscillations of a poppet valve in an internal combustion engine.

Claims (38)

WHAT IS CLAIMED IS:
1. An apparatus including a linear motor, comprising: a shaft member having a longitudinal axis and opposing first and second shaft ends; at least one thruster coil disposed coaxially about and affixed to a portion of said shaft member between said opposing first and second shaft ends; at least one forcer coil disposed coaxially about another portion of said shaft member and outside an outer periphery of said thruster coil; and a gap between said thruster coil and said forcer coil.
2. The apparatus of claim 1, wherein said at least one forcer coil is disposed coaxially about at least a portion of said outer periphery of said thruster coil and defines said gap.
3. The apparatus of claim 1, further comprising a sleeve member disposed coaxially about at least a portion of said gap, wherein said at least one forcer coil is affixed to an outer periphery of said sleeve member.
4. The apparatus of claim 3, wherein said sleeve member comprises a ferrous sleeve.
5. The apparatus of claim 1, further comprising a housing, wherein: at least a portion of an outer periphery of said at least one forcer coil is attached to at least a portion of said housing; said housing includes opposing first and second housing portions having first and second apertures, respectively, disposed coaxially about said longitudinal axis; and said first and second shaft ends protrude from said housing via said first and second apertures, respectively.
6 The apparatus of claim 5, wherein said housing comprises a ferrous housing.
7. The apparatus of claim 1, further comprising one or more mechanical structures that include: a first portion to which said forcer coil is fixedly attached; and a second portion containing an aperture proximate one of said first and second shaft ends and adapted to movably guide longitudinal oscillation of said shaft member.
8. The apparatus of claim 1, further comprising: at least one electrical power source; and a power controller electrically coupled between said at least one electrical power source and said at least one forcer coil and said at least one thruster coil.
9. The apparatus of claim 1, wherein said shaft member comprises a stem of a poppet valve for an internal combustion engine.
10. The apparatus of claim 1, further comprising a mechanical coupling adapted to mechanically engage said shaft member with a stem of a poppet valve for an internal combustion engine.
11. An apparatus including a linear motor, comprising: a shaft member having a longitudinal axis and opposing first and second shaft ends; an open coil support member including a first support portion disposed coaxially about at least a portion of said shaft member, and a second support portion attached to said shaft member; at least one thruster coil disposed coaxially about and affixed to said first support portion; at least one forcer coil disposed coaxially about another portion of said shaft member and at least partially inside at least a portion of an inner periphery of said thruster coil; and a gap between said thruster coil and said forcer coil.
12. The apparatus of claim 11, further comprising a vessel containing said at least one forcer coil.
13. The apparatus of claim 12, wherein said vessel comprises a ferrous vessel.
14. The apparatus of claim 11, wherein said second support portion is attached to said shaft member between said opposing first and second shaft ends.
15. The apparatus of claim 11, wherein said second support portion is attached to one of said first and second shaft ends.
16. The apparatus of claim 11, wherein, relative to second support portion, said at least one forcer coil comprises a proximal forcer coil portion and a distal forcer coil portion.
17. The apparatus of claim 11, wherein said at least one forcer coil is further disposed at least partially outside at least a portion of an outer periphery of said thruster coil.
18. The apparatus of claim 11, further comprising a housing that includes a portion with an aperture disposed coaxially about said longitudinal axis, wherein one of said first and second shaft ends protrude from said housing via said aperture.
19. The apparatus of claim 11, further comprising one or more mechanical structures that include a portion containing an aperture proximate one of said first and second shaft ends and adapted to movably guide longitudinal oscillation of said shaft member.
20. The apparatus of claim 11, further comprising: at least one electrical power source; and a power controller electrically coupled between said at least one electrical power source and said at least one forcer coil and said at least one thruster coil.
21. The apparatus of claim 11, wherein said shaft member comprises a stem of a poppet valve for an internal combustion engine.
22. The apparatus of claim 11, further comprising a mechanical coupling adapted to mechanically engage said shaft member with a stem of a poppet valve for an internal combustion engine.
23. A method for driving a linear motor, comprising: applying, to at least one forcer coil disposed coaxially about at least a portion of a shaft member having a longitudinal axis and opposing first and second shaft ends, a first signal having one of first mutually opposing polarities to induce a forcer magnetic field; and applying, to at least one thruster coil disposed coaxially with and between respective portions of said forcer coil and said shaft member, a second signal having one of second mutually opposing polarities to induce a thruster magnetic field, wherein said at least one thruster coil is affixed to a portion of said shaft member between said opposing first and second shaft ends and defines a gap coaxially between said thruster coil and said forcer coil; wherein responsive to applying said first and second signals having a combination of said first and second mutually opposing polarities, said forcer and thruster magnetic fields are mutually attractive and urge said shaft member to move more of said thruster coil between respective portions of said forcer coil and said shaft member, and responsive to applying said first and second signals having a different combination of said first and second mutually opposing polarities, said forcer and thruster magnetic fields are mutually repellant and urge said shaft member to move more of said thruster coil out from between respective portions of said forcer coil and said shaft member.
24. The method of claim 23, further comprising guiding respective portions of said forcer and thruster magnetic fields with a ferrous sleeve member disposed circumferentially about at least a portion of said gap, wherein said at least one forcer coil is affixed to an outer periphery of said ferrous sleeve member.
25. The method of claim 23, further comprising guiding reciprocations of said first and second shaft ends with first and second apertures of opposing first and second portions, respectively, of a housing attached to at least a portion of an outer periphery of said at least one forcer coil.
26. The method of claim 23, further comprising movably guiding longitudinal oscillation of one of said first and second shaft ends with an aperture of one of opposing first and second portions, respectively, of a housing attached to at least a portion of an outer periphery of said at least one forcer coil.
27. The method of claim 23, further comprising causing, with said shaft member, a poppet valve for an internal combustion engine to open and close.
28. The method of claim 23, further comprising mechanically engaging said shaft member with a stem of a poppet valve for an internal combustion engine.
29. A method for driving a linear motor, comprising: applying, to at least one forcer coil disposed coaxially about at least a portion of a shaft member that includes a longitudinal axis and opposing first and second shaft ends and is attached to a first support portion of an open coil support member, a first signal having one of first mutually opposing polarities to induce a forcer magnetic field; and applying, to at least one thruster coil disposed coaxially about and affixed to a second support portion of said open coil support member and disposed coaxially about at least another portion of said shaft member, a second signal having one of second mutually opposing polarities to induce a thruster magnetic field, wherein said at least one forcer coil is further disposed at least partially inside at least a portion of an inner periphery of said thruster coil; wherein responsive to applying said first and second signals having a combination of said first and second mutually opposing polarities, said forcer and thruster magnetic fields are mutually attractive and urge said shaft member to cause more of said at least one forcer coil to be disposed inside said inner periphery of said thruster coil, and responsive to applying said first and second signals having a different combination of said first and second mutually opposing polarities, said forcer and thruster magnetic fields are mutually repellant and urge said shaft member to cause less of said at least one forcer coil to be disposed inside said inner periphery of said thruster coil.
30. The method of claim 29, further comprising guiding respective portions of said forcer and thruster magnetic fields with a ferrous vessel containing said at least one forcer coil.
31. The method of claim 29, wherein said first support portion is attached to said shaft member between said opposing first and second shaft ends.
32. The method of claim 29, wherein said first support portion is attached to one of said first and second shaft ends.
33. The method of claim 29, wherein, relative to first support portion, said at least one forcer coil comprises a proximal forcer coil portion and a distal forcer coil portion.
34. The method of claim 29, wherein said at least one forcer coil is further disposed at least partially outside at least a portion of an outer periphery of said thruster coil.
35. The method of claim 29, further comprising movably guiding longitudinal oscillation of one of said first and second shaft ends with an aperture of a housing disposed coaxially about said longitudinal axis.
36. The method of claim 29, further comprising movably guiding longitudinal oscillation of one of said first and second shaft ends with an aperture of a mechanical structure disposed proximate said one of said first and second shaft ends.
37. The method of claim 29, further comprising causing, with said shaft member, a poppet valve for an internal combustion engine to open and close.
38. The method of claim 29, further comprising mechanically engaging said shaft member with a stem of a poppet valve for an internal combustion engine.
GB2115618.7A 2019-03-29 2020-02-10 Highly efficient linear motor Active GB2597031B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB2317594.6A GB2621516B (en) 2019-03-29 2020-02-10 Highly efficient linear motor

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US16/370,576 US10601293B2 (en) 2018-02-23 2019-03-29 Highly efficient linear motor
PCT/US2020/017422 WO2020205064A1 (en) 2019-03-29 2020-02-10 Highly efficient linear motor

Publications (4)

Publication Number Publication Date
GB202115618D0 GB202115618D0 (en) 2021-12-15
GB2597031A true GB2597031A (en) 2022-01-12
GB2597031A8 GB2597031A8 (en) 2022-07-27
GB2597031B GB2597031B (en) 2024-05-01

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Family Applications (2)

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GB2317594.6A Active GB2621516B (en) 2019-03-29 2020-02-10 Highly efficient linear motor
GB2115618.7A Active GB2597031B (en) 2019-03-29 2020-02-10 Highly efficient linear motor

Family Applications Before (1)

Application Number Title Priority Date Filing Date
GB2317594.6A Active GB2621516B (en) 2019-03-29 2020-02-10 Highly efficient linear motor

Country Status (4)

Country Link
EP (1) EP3782271A4 (en)
KR (1) KR102776491B1 (en)
GB (2) GB2621516B (en)
WO (1) WO2020205064A1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114747914B (en) * 2022-04-18 2023-05-23 石家庄学院 Reversible temperature-sensing type data display self-integrating control

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2001008432A (en) * 1999-06-22 2001-01-12 Sankyo Seiki Mfg Co Ltd Linear motor
US20020145124A1 (en) * 2001-04-09 2002-10-10 Kabasin Daniel Francis Electromagnetic valve motion control
US20030168030A1 (en) * 1998-11-04 2003-09-11 Tetsuo Muraji Valve driving apparatus
US20050016478A1 (en) * 2001-09-04 2005-01-27 Tametoshi Mizuta Method of operating internal combustion engine including electromagnetically driven intake valves
US20080149391A1 (en) * 2006-12-21 2008-06-26 M-I Llc Linear motor to pre-bias shuttle force

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US782312A (en) 1902-06-21 1905-02-14 Alfred Zehden Electric traction apparatus.
US4228373A (en) * 1979-09-10 1980-10-14 Funderburg William S Electromagnetic motor
US4404503A (en) 1981-11-02 1983-09-13 Ward William L Reciprocating electric motor
US4675563A (en) * 1982-10-29 1987-06-23 The United States Of America As Represented By The Administrator Of The National Aeronautics & Space Administration Reciprocating linear motor
US20060055251A1 (en) * 2004-09-15 2006-03-16 Shun-Hsing Hsian Tubular linear motor for electrical discharge machine
DE102007015168A1 (en) * 2007-03-27 2008-10-02 Trithor Gmbh Linear machine with a primary part and a secondary part
JP5750340B2 (en) * 2011-09-05 2015-07-22 山洋電気株式会社 Electric machine
US10385797B2 (en) * 2011-11-07 2019-08-20 Sentimetal Journey Llc Linear motor valve actuator system and method for controlling valve operation
US9390875B2 (en) * 2013-05-29 2016-07-12 Active Signal Technologies, Inc. Electromagnetic opposing field actuators

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20030168030A1 (en) * 1998-11-04 2003-09-11 Tetsuo Muraji Valve driving apparatus
JP2001008432A (en) * 1999-06-22 2001-01-12 Sankyo Seiki Mfg Co Ltd Linear motor
US20020145124A1 (en) * 2001-04-09 2002-10-10 Kabasin Daniel Francis Electromagnetic valve motion control
US20050016478A1 (en) * 2001-09-04 2005-01-27 Tametoshi Mizuta Method of operating internal combustion engine including electromagnetically driven intake valves
US20080149391A1 (en) * 2006-12-21 2008-06-26 M-I Llc Linear motor to pre-bias shuttle force

Also Published As

Publication number Publication date
GB2597031B (en) 2024-05-01
WO2020205064A1 (en) 2020-10-08
GB2621516A (en) 2024-02-14
GB2621516B (en) 2024-07-03
GB2597031A8 (en) 2022-07-27
KR20220017891A (en) 2022-02-14
EP3782271A1 (en) 2021-02-24
KR102776491B1 (en) 2025-03-04
GB202115618D0 (en) 2021-12-15
EP3782271A4 (en) 2022-01-12

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