Electric heating – Metal heating – Of cylinders
Patent
1991-05-20
1993-06-01
Leung, Philip H.
Electric heating
Metal heating
Of cylinders
219 1065, 219 1075, H05B 610
Patent
active
052162150
ABSTRACT:
A main-frequency electrically powered fluid heater which includes a coreless transformer and an electrically conductive jacket through which flows the fluid to be heated; the coreless transformer comprises a primary winding electrically insulated from the jacket but at least partially surrounding it, and a secondary winding arranged so as to be linked by magnetic flux from the primary winding; secondary winding being electrically insulated from the primary winding, but electrically connected to the jacket, so that the jacket is heated both by resistance heating and by eddy current heating.
REFERENCES:
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patent: 1656518 (1928-01-01), Hammers
patent: 1918637 (1933-07-01), Fendt et al.
patent: 2407562 (1946-09-01), Lofgren
patent: 3867563 (1975-02-01), Laflin
patent: 4471191 (1984-09-01), Greis et al.
patent: 4602140 (1986-07-01), Sobolewski
patent: 4791262 (1988-12-01), Ando et al.
patent: 4855552 (1989-08-01), Marceau et al.
Bodger Patrick S.
Walker Ross J. H.
Leung Philip H.
Transflux Holdings Limited
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