GB674284A - Improvements in and relating to thermomagnetic generators and refrigerators - Google Patents
Improvements in and relating to thermomagnetic generators and refrigeratorsInfo
- Publication number
- GB674284A GB674284A GB13568/50A GB1356850A GB674284A GB 674284 A GB674284 A GB 674284A GB 13568/50 A GB13568/50 A GB 13568/50A GB 1356850 A GB1356850 A GB 1356850A GB 674284 A GB674284 A GB 674284A
- Authority
- GB
- United Kingdom
- Prior art keywords
- tubes
- liquid
- joined
- tube
- magnetic circuit
- 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.)
- Expired
Links
Classifications
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10N—ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10N15/00—Thermoelectric devices without a junction of dissimilar materials; Thermomagnetic devices, e.g. using the Nernst-Ettingshausen effect
- H10N15/20—Thermomagnetic devices using thermal change of the magnetic permeability, e.g. working above and below the Curie point
Abstract
674,284. Electric generators. TECHNICAL ASSETS, Inc. May 31, 1950 [May 31, 1949], No. 13568/50. Class 35. [Also in Group XIII] Generators operating by thermally produced changes of permeability of magnetic circuit.-In a thermo-electric generator or magnetic refrigerator operating by thermally produced changes in the permeability of a magnetic circuit or the Curie effect as described in Specifications 655,087, 655,088 and 661,738, [Group XIII], and comprising composite active ferromagnetic elements having graded Curie points heated and cooled by a metallic liquid, eddy-currents are reduced by making the section of tubular elements which are insulated from each other. The elements may comprise a cluster of rectangular tubes carrying the liquid but preferably a pack of flat, mutually insulated tubes is used. In the form shown in Figs. 1 and 2, the composite sections 1, 11 comprise packs of flat tubes whose Curie points vary from top to bottom and are joined to magnetic extensions 2, 2<SP>1</SP> and 3, 3<SP>1</SP>, at either end. At the top or high temperature end, the liquid passes into compartments 4, 4<SP>1</SP>, provided with cooling fins 5, 5<SP>1</SP> and 6, 6<SP>1</SP>, and joined by a tube 7 containing an electromagneticallyoperated piston 8 for oscillating the liquid. at the bottom or low temperature end, the tubes are joined by a refrigerating or cooling tube 14 having external and internal fins. The liquid oscillator may alternatively be at the low temperature part of the apparatus. The magnetic circuit comprises a permanent or electro magnet 15 having pole-pieces 16, 17, carrying A.C. windings 18 and in magnetic contact with the tube assemblies so that flux passes longitudinally through them. The flat tubes are separated by insulating layers 1*. The tubes may be strengthened by longitudinal spacers joining the flat sides of the tube. The piston for reciprocating the liquid may be replaced by a thermal oscillating means shown in Fig. 4. The compartments 4, 4<SP>1</SP> are joined through conical vapour condensing chambers 20, 20<SP>1</SP>, to sealed superheating tubes 23, 23<SP>1</SP> connected at their ends to electrodes 24, 24<SP>1</SP> and 25, 251. Rectified current is fed alternately through the length of each tube so that the liquid is vapour - ized and pushes the liquid. Thermal insulation 26, 26<SP>1</SP> is provided round the tubes which are each braced by an insulated metal sleeve 27, 27<SP>1</SP>. The tubes 23, 23<SP>1</SP> may contain inert gas or may have bulbs connected to their top ends which may contain gas under pressure to produce the desired natural frequency of the liquid body. In a modification, Fig. 6, the magnetic circuit and the liquid circuit are mutually at right angles. The magnetic circuit comprises a permanent magnet 32 with pole-pieces 33 joined to either side of the thermal section which comprises mutually insulated flattened tubes 35 carrying the liquid. The passages 36 inside the tubes open into finned compartments 40 joined by a reciprocating piston chamber 43. At their upper ends the tubes are interconnected by mutually insulated tubes 44 suitably spaced for easy heating or cooling.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR674284X | 1949-05-31 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB674284A true GB674284A (en) | 1952-06-18 |
Family
ID=9018646
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB13568/50A Expired GB674284A (en) | 1949-05-31 | 1950-05-31 | Improvements in and relating to thermomagnetic generators and refrigerators |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB674284A (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2008118063A1 (en) * | 2007-03-28 | 2008-10-02 | Abb Research Ltd. | Valve apparatus |
EP2108904A1 (en) | 2008-04-07 | 2009-10-14 | Haute Ecole d'Ingénierie et de Gestion du Canton de Vaud (HEIG-VD) | A magnetocaloric device, especially a magnetic refrigerator, a heat pump or a power generator |
US8183736B2 (en) | 2007-03-28 | 2012-05-22 | Abb Research Ltd. | Device and method for converting energy |
US8304957B2 (en) | 2007-03-28 | 2012-11-06 | Abb Research Ltd. | Thermomagnetic generator device and energy converting method |
-
1950
- 1950-05-31 GB GB13568/50A patent/GB674284A/en not_active Expired
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2008118063A1 (en) * | 2007-03-28 | 2008-10-02 | Abb Research Ltd. | Valve apparatus |
US8129882B2 (en) | 2007-03-28 | 2012-03-06 | Abb Research Ltd. | Thermoelectric generator and method of generating electricity |
US8183736B2 (en) | 2007-03-28 | 2012-05-22 | Abb Research Ltd. | Device and method for converting energy |
US8304957B2 (en) | 2007-03-28 | 2012-11-06 | Abb Research Ltd. | Thermomagnetic generator device and energy converting method |
EP2108904A1 (en) | 2008-04-07 | 2009-10-14 | Haute Ecole d'Ingénierie et de Gestion du Canton de Vaud (HEIG-VD) | A magnetocaloric device, especially a magnetic refrigerator, a heat pump or a power generator |
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