Refrigeration – Using electrical or magnetic effect
Patent
1990-03-14
1993-02-02
Behrend, Harvey E.
Refrigeration
Using electrical or magnetic effect
62 6, 505889, 505891, 505892, 505894, 505895, 505896, 505897, 505898, 505899, F25B 2100, F25B 900, H01F 508, H01F 722
Patent
active
051829142
ABSTRACT:
The rotary dipole active magnetic regenerative refrigerator (10) of the present invention comprises a stationary first regenerative magnetic bed (12) positioned within a stationary first inner dipole magnet (14), a stationary second regenerative magnetic material bed (16) positioned within a stationary second inner dipole magnet (18), an outer dipole magnet (20) that rotates on a longitudinal axis and encloses the inner dipole magnets (14, 18), a cold heat exchanger (22), hot heat exchangers (24, 26), a fluid displacer (28), and connective plumbing through which a heat transfer fluid is conveyed. The first and second regenerative magnetic beds (12, 16) are magnetized and demagnetized as the vector sums of the magnetic fields of the inner dipoles magnets (14, 18) and the outer dipole magnet (20) are added together upon rotation of the outer dipole magnet (20), such magnetization and demagnetization causing a correlative increase and decrease in the temperature of the magnetic material beds (12, 16) by the magnetocaloric effect. Upon magnetization of any particular magnetic material bed (12 or 16), fluid flow is forced therethrough in the connective plumbing by the fluid displacer (28) in the direction from the cold heat exchanger (22) to one of the hot heat exchangers (24,26). Upon demagnetization of any particular magnetic material bed (12 or 16), fluid flow is reversed by the fluid displacer (28) and is forced in the direction from one of the hot heat exchangers (24, 26) to the cold heat exchanger (22).
REFERENCES:
patent: 2510800 (1950-06-01), Chilowsky
patent: 2619603 (1952-11-01), Chilowsky
patent: 2648784 (1953-08-01), Chilowsky
patent: 3108444 (1963-10-01), Kahn
patent: 3121265 (1964-02-01), Hoh
patent: 3393526 (1968-07-01), Pearl
patent: 3413814 (1968-12-01), Van Geuns
patent: 3743866 (1973-07-01), Pire
patent: 3774404 (1973-11-01), Walker et al.
patent: 3841107 (1974-10-01), Clark
patent: 4033734 (1977-07-01), Steyert, Jr. et al.
patent: 4069028 (1978-01-01), Brown
patent: 4107935 (1978-08-01), Steyert, Jr.
patent: 4332135 (1982-06-01), Barclay et al.
patent: 4408463 (1983-10-01), Barclay et al.
patent: 4441325 (1984-04-01), Bon-Mardion et al.
patent: 4457135 (1984-07-01), Hakuraku et al.
patent: 4459811 (1984-07-01), Barclay et al.
patent: 4464903 (1984-08-01), Nakagome et al.
patent: 4507927 (1985-04-01), Barclay
patent: 4507928 (1985-04-01), Johnson
patent: 4599866 (1986-07-01), Nakagome et al.
patent: 4642994 (1987-02-01), Barclay et al.
patent: 4702090 (1987-10-01), Barclay et al.
patent: 4704871 (1987-11-01), Barclay et al.
patent: 4901047 (1990-02-01), Wipf
H. Nakagome, et al., "A Parasitic Magnetic Refrigerator for Cooling Superconduction Magnet," IEEE Transactions on Magnetics, vol. 24, No. 2, Mar. 1988, pp. 1113-1116.
Y. Hakuraku, et al., "Conceptual Design of a New Magnetic Refrigerator Operating Between 4K and 20K," Japanese Journal of Applied Physics, vol. 24, No. 11, Nov., 1985, pp. 1548-1551.
Magnetic Refrigeration: The Basis for a New Refrigeration Technolog Los Alamos Laboratory Mini-Review, LALP-82-34, Nov., 1982.
J. A. Barclay, et al., "Experimental Results on a Low Temperature Magnetic Refrigerator," Adv. in Cryogenic Engineering 31, 743 (1986).
Y. Hakuraku, et al., "A Magnetic Refrigerator for Superfluid Helium Equipped with a Rotating Magnetic System," Japanese Journal of Applied Physics, vol. 25, No. 1, Jan., 1986, pp. 140-146.
Y. Hakuraku, et al., "A Rotary Magnetic Refrigerator for Superfluid Helium Production", J. Appl. Phys. 60 (9), Nov. 1, 1986, pp. 3226-3268.
J. A. Barclay, et al., "Magnetic Refrigeration for 4-20K Application" Los Alamos National Laboratory Report LA UR-84-540, Dec., 1983.
Flight Dynamics Laboratory, Air Force Wright Aeronautical Laboratory Report AFWAL-TR-83-3210, Air Force Systems Command Wright-Patterson Air Force Base, Ohio, 54533 (this report is subject to export control laws).
H. Nakagome et al., "Rotating Magnetic Refrigerator for Helium Liquefaction," Proceedings fo the 11th International Cryogenic Engineering Conference, Berlin, Germany, Apr. 22-25, 1986.
Barclay John A.
Claybaker Peter J.
DeGregoria Anthony J.
Johnson Joseph W.
Waynert Joseph A.
Astronautics Corporation of America
Behrend Harvey E.
Jenkins Daniel
LandOfFree
Rotary dipole active magnetic regenerative refrigerator does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Rotary dipole active magnetic regenerative refrigerator, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Rotary dipole active magnetic regenerative refrigerator will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1611