[특허]Magnetic induction pump

Hazelett Strip-Casting Corporation

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특허 상세정보

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Magnetic induction pump

특허상세정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	H02K-044/00 H02K-044/08
미국특허분류(USC)	417/050;
출원번호	US-0123068 (2008-05-19)
등록번호	US-8267669 (2012-09-18)
발명자 / 주소	Kagan, Valery G.
출원인 / 주소	Hazelett Strip-Casting Corporation
대리인 / 주소	McCormick, Paulding & Huber LLP
인용정보	피인용 횟수 : 6 인용 특허 : 14

초록
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A magnetic induction pump for pumping molten metal. The pump includes a motor and a shaft operatively connected to the motor. The pump further includes at least one bipolar permanent magnet operatively connected to the shaft and a conduit for the passage of molten metal. The motor rotates the shaft and magnet about the conduit inducing eddy currents in the molten metal in the conduit which react with the moving magnetic field to produce force to pump the metal through the conduit with the metal coming into contact with only an interior surface of the con...

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1. A magnetic induction pump for pumping molten metal, said pump comprising: a motor;a shaft operatively connected to said motor;at least one bipolar permanent magnet operatively connected to and extending from said shaft in a spoke configuration;a non-magnetic conduit for the passage of molten metal, said conduit being substantially arcuate in shape;wherein each of said at least one bipolar permanent magnet is oriented on the same lateral side of said conduit such that said conduit is not captured between opposed bipolar permanent magnets; andwherein said motor moves said shaft and said bipolar permanent magnet about said conduit thereby inducing an electric current in molten metal in said conduit to pump said molten metal through said conduit with said molten metal coming into contact with only said conduit; andwherein a height of said at least one bipolar permanent magnet is greater than or equal to approximately 2 to 3 times a height of said conduit. 2. The magnetic induction pump of claim 1 wherein said pump further comprises a yoke, said yoke being directly adjacent to said conduit and on an opposite side of said conduit than said at least one bipolar magnet, and wherein said yoke is ferromagnetic and intensifies a magnetic field generated by said at least one bipolar permanent magnet. 3. The magnetic induction pump of claim 1 wherein said at least one bipolar permanent magnet is a neo-magnet. 4. The magnetic induction pump of claim 1 wherein said at least one bipolar permanent magnet comprises a plurality of pairs of bipolar neo-magnets, and wherein said of each bipolar neo-magnets has a polar configuration opposite that of adjacent bipolar neo-magnet. 5. The magnetic induction pump of claim 4 wherein said each of said bipolar permanent magnets is separated from an adjacent bipolar permanent magnet by a magnetically inert spacer. 6. The magnetic induction pump of claim 1 wherein said motor, shaft and conduit are removably secured to a base, said base being capable of selective attachment to a molten metal container. 7. The magnetic induction pump of claim 1 wherein said shaft is ferromagnetic. 8. The magnetic induction pump of claim 1 wherein said shaft and at least one bipolar permanent magnet are housed within a rotor, said rotor being removably secured to said base. 9. The magnetic induction pump of claim 1 wherein a direction of flow of said molten metal may be stopped and reversed by reversing a direction of rotation of said motor. 10. A rotary pump, said pump comprising: a motor;a ferromagnetic shaft operatively connected to said motor;a plurality of bipolar neo-magnet magnets operatively connected to and extending outward from said shaft in a spoke configuration, said bipolar magnets generating a strong magnetic flux;a magnetically inert conduit for the passage of molten metal, said conduit having an inlet and an outlet and being substantially arcuate in shape;wherein all of said bipolar magnets are oriented on the same side of said conduit such that said conduit is not captured between any of said plurality of bipolar magnets;wherein said motor rotates said shaft and said magnets along one edge of said conduit thereby inducing eddy currents in molten metal in said conduit, said currents interacting with a moving magnetic field to produce force to pump said molten metal from said inlet to said outlet with said molten metal coming into contact with only said conduit;wherein each of said bipolar magnets has a height and said conduit has an internal passage having a height; andwherein said height of each of said bipolar magnets is greater than or equal to approximately 2 to 3 times that of said conduit passage. 11. The rotary pump of claim 10 wherein said pump further comprises a cylindrical rotor which houses said bipolar magnets and said shaft. 12. The rotary pump of claim 10 wherein said pump further comprises a yoke, said yoke being directly adjacent to said conduit opposite the magnet poles and on an opposite side of said conduit from said magnet poles, and wherein said yoke is ferromagnetic and intensifies said magnetic flux. 13. The rotary pump of claim 12 wherein each of said bipolar magnets has a width bm and said yoke having a height hy; and wherein said yoke height is approximately greater than or equal to ½ bm. 14. The rotary pump of claim 10 wherein each of said plurality of bipolar magnets has a polar configuration opposite that of an adjacent bipolar magnet. 15. The rotary pump of claim 14 wherein said each of said bipolar magnets is separated from an adjacent bipolar magnet by a spacer, said spacers being manufactured from a magnetically inert material. 16. The rotary pump of claim 14 wherein said bipolar magnets are spaced apart angularly about said shaft and said conduit has the internal passage having a height h; and wherein said angular spacing of said bipolar magnets is approximately greater than or equal to 2 to 3 times twice the height of the conduit, (2h). 17. The rotary pump of claim 14 wherein each of said bipolar magnets has a width bm and said shaft has a radius R1, and wherein R1 is approximately greater than or equal to bm. 18. The rotary pump of claim 10 wherein said motor, shaft and conduit are removably secured to a base, said base being capable of selective attachment to a container. 19. A method of pumping molten metal, said method comprising the steps of: introducing molten metal into an inlet of a substantially arcuate-shaped conduit of a magnetic induction pump;moving a plurality of bipolar permanent magnets about a single lateral exterior side of said conduit from said inlet to a conduit outlet whereby said plurality of bipolar permanent magnets do not capture said conduit therebetween, said plurality of bipolar permanent magnets generating a changing magnetic flux which induces eddy currents in said molten metal, said eddy currents interacting with the moving magnetic field creating a force sufficient to pump said metal through said conduit;wherein said molten metal only contacts said conduit surface and no other component of said magnetic induction pump; andwherein said plurality of bipolar permanent magnets is eight bipolar neo-magnets operatively secured to and extending from a ferromagnetic shaft in a spoke configuration. 20. The method of claim 19 wherein said conduit is shrouded with a ferromagnetic yoke to intensify said magnetic flux. 21. The method of claim 19 wherein said plurality of bipolar permanent magnets are separated from one another by magnetically inert spacers; and wherein said plurality of bipolar permanent magnets, spacers and shaft are contained within a cylindrical rotor. 22. The method of claim 19 further comprising the step of securing said magnetic induction pump to a container of molten metal to be pumped.

이 특허에 인용된 특허 (14)

이 특허를 인용한 특허 피인용횟수: 6

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특허 상세정보

Magnetic induction pump

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이 특허에 인용된 특허 (14)

이 특허를 인용한 특허 피인용횟수: 6

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Magnetic induction pump

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이 특허에 인용된 특허 (14)

이 특허를 인용한 특허 피인용횟수: 6

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IPC 상세정보(version : 201201)

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