IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
UP-0578855
(2005-04-21)
|
등록번호 |
US-7650756
(2010-02-24)
|
우선권정보 |
FR-04 04306(2004-04-23) |
국제출원번호 |
PCT/IB2005/001059
(2005-04-21)
|
§371/§102 date |
20061019
(20061019)
|
국제공개번호 |
WO05/103585
(2005-11-03)
|
발명자
/ 주소 |
- Muller, Christian
- Dupin, Jean-Louis
- Heitzler, Jean-Claude
|
출원인 / 주소 |
|
대리인 / 주소 |
|
인용정보 |
피인용 횟수 :
10 인용 특허 :
4 |
초록
▼
The present invention concerns a device for generating thermal units using magnetocaloric material, with low energy consumption, evolutive, of a simple design, reliable operation, which allows to generate thermal units in a cost effective way while at the same time removing the risks of thermal flui
The present invention concerns a device for generating thermal units using magnetocaloric material, with low energy consumption, evolutive, of a simple design, reliable operation, which allows to generate thermal units in a cost effective way while at the same time removing the risks of thermal fluid leakage and limiting the number of mechanical parts. The device (1a) for generating thermal units using magnetocaloric material comprises a magnetic element (2a) coupled to a power supply (3a), a magnetocaloric element (4a), a circuit (5) for thermal exchange fluid in which one or more thermal exchange fluids are made to circulate by means of circulation (6), and two heat exchangers (7, 8). The power supply (3a) is set up to generate electric pulses so as to create an impulsive magnetic field that causes the heating and the cooling of the magnetocaloric element (4a) and hence of the thermal exchange fluid.
대표청구항
▼
The invention claimed is: 1. A device (1a-c) for the generation of thermal units using magnetocaloric material, the device comprising: at least one magnetic element (2a-c) intended to generate a magnetic field, at least one magnetocaloric element (4a-c) intended to be alternatively subjected to the
The invention claimed is: 1. A device (1a-c) for the generation of thermal units using magnetocaloric material, the device comprising: at least one magnetic element (2a-c) intended to generate a magnetic field, at least one magnetocaloric element (4a-c) intended to be alternatively subjected to the magnetic field in order to generate calories and frigories, at least one circuit (5) for circulating a thermal exchange fluid flowing through the magnetocaloric element (4a-c) to recover at least part of at least one of the calories and frigories that the magnetocaloric element (4a-c) emits, the circuit (5) being coupled to means for circulation (6) of the thermal exchange fluid and to at least one heat exchanger (7, 8, 78) for transfer of at least part of at least one of the calories and frigories recovered by the thermal exchange fluid, wherein the magnetic element is an electromagnet (2a-c) coupled to at least one power supply (3a-c) controlled by at least one control unit (20) for generating electric pulses (9a-c) and creating an impulsive magnetic field, with the electric pulses (9a-c) having an intensity (I), duration (t) and frequency (T) triggered as a function of at least one predetermined pulse parameter, and the device comprising at least one thermal sensor (10) for determining the temperature of the thermal exchange fluid, and said fluid temperature defining at least one pulse parameter. 2. The device (1a, 1b) according to claim 1, wherein the device includes mains of recovery which comprises at least two heat exchangers (7, 8) connected to the circuit (5) one of serially, in parallel and as a serial/parallel combination. 3. The device (1a, 1b) according to claim 2, wherein the means of recovery comprise at least one heat exchanger for calories (7) set up to transfer the calories and at least one heat exchanger for frigories (8) set up to transfer the frigories, with the two heat exchangers (7, 8) coupled to means of commutation (11) controlled by a control unit set up to successively connect each heat exchanger (7, 8) to the magnetocaloric element (4a-c) as a function of at least one predetermined commutation parameter. 4. The device (1a-c) according to claim 1, wherein the control unit is set up so that the frequency (T) ranges between 60 seconds and 1/150th of a second. 5. The device (1a-c) according to claim 1, wherein the control unit is set up so that the frequency (T)/duration (t) ratio ranges between 10 and 100,000. 6. The device (1a-c) according to claim 1, wherein the control unit is set up so that the intensity (I) generates, in the magnetic element, a magnetic field that ranges between 0.05 Tesla and 10 Teslas. 7. The device (1a-c) according to claim 1, wherein the control unit comprises means for the adjustment of at least one of the pulse parameters selected within the group that includes the duration (t), the frequency (T), the intensity (I). 8. A device (1a-c) for the generation of thermal units using magnetocaloric material, the device comprising: at least one magnetic element (2a-c) intended to generate a magnetic field, at least one magnetocaloric element (4a-c) intended to be alternatively subjected to the magnetic field in order to generate calories and frigories, at least one circuit (5) for circulating a thermal exchange fluid, of which at least a portion is placed in an immediate vicinity of flowing through the magnetocaloric element (4a-c) to recover at least part of at least one of the calories and frigories that the magnetocaloric element (4a-c) emits; the circuit (5) being coupled to means for circulation (6) of the thermal exchange fluid and to at least one heat exchanger (7, 8, 78) for transfer of at least part of at least one of the calories and frigories recovered by the thermal exchange fluid; wherein the magnetic element is an electromagnet (2a-c) coupled to at least one power supply (3a-c) controlled by at least one control unit (20) for generating electric pulses (9a-c) and create an impulsive magnetic field, with the electric pulses (9a-c) having an intensity (I), duration (t) frequency (T) triggered as a function of at least one predetermined pulse parameter and the device comprising at least one thermal sensor (10) for determining the temperature of the thermal exchange fluid, and said fluid temperature defining at least one pulse parameter; and a means set up to determine the time interval elapsed since one of a preceding commutation and electric pulse (9a-c), with this time interval defining at least one of a commutation and pulse parameter. 9. The device (1a-c) according to claim 1, wherein the control unit comprises means for the adjustment of at least one of the predetermined commutation and pulse parameter. 10. The device (1a-c) according to claim 1, wherein the means of recovery comprise at least a mixed exchanger (78) set up to transfer the calories and the frigories. 11. The device (1b) according to claim 1, wherein the device comprises at least two magnetocaloric elements (4b, 4a) interconnected at least one of in series, in parallel and as a serial/parallel combination. 12. The device (1b) according to claim 11, wherein the magnetocaloric elements (4b, 4a) have different magnetocaloric characteristics. 13. The device (1b) according to claim 11, wherein the device comprises at least two electromagnets (2b, 2c), each one associated to a magnetocaloric element (4b, 4a) and at least two power supplies (3b, 3c) set up to separately feed the electromagnets (2b, 2c) electrically. 14. The device (1a-c) according to claim 1, wherein a core of the magnetic element (2a-c) is made of a high remanence magnetic material. 15. The device (1a-c) according to claim 1, wherein the magnetic element (2a-c) and the magnetocaloric element (4a-c) are fixed in relation to one another. 16. A method for generating thermal units using magnetocaloric material during which at least one magnetocaloric material element (4a-c) is subjected to a least one electromagnet (2a-c) fed with electric pulses to create an impulsive magnetic field and generate calories and frigories, wherein of an intensity (I), a duration (t) and a frequency (T) of the electric pulses (9a-c) are triggered as a function of at least one predetermined pulse parameter, the temperature of the thermal exchange fluid is determined and this fluid temperature is used as a pulse parameter; and the method comprising the steps of: coupling the electromagnet (2a-c) with at least one power supply (3a-c) controlled by at least one control unit (20) for generating the electric pulses (9a-c) to create the impulsive magnetic field; circulating the thermal exchange fluid through the magnetocaloric element (4a-c) in at least one circuit (5) of which at least a portion is placed in an immediate vicinity of the magnetocaloric element (4a-c); recovering, via the thermal exchange fluid, at least part of at least one of the calories and the frigories generated by the magnetocaloric element (4a-c); transferring, via at least one heat exchanger (7, 8, 78), at least part of at least one of the recovered calories and the frigories. 17. The method according to claim 16, further comprising the step of using at leas two heat exchangers which are connected to the aforesaid circuit (7, 8) one of serially, in parallel and as a serial/parallel combination. 18. The method according to claim 17, further comprising the step of using at least one calories exchanger (7) to transfer the calories and at least one frigories exchanger (8) to transfer the frigories, which are alternatively connected to the magnetocaloric element (4a-c) as a function of at least one predetermined commutation parameter. 19. The method according to claim 16, further comprising the step of adjusting at least one of the pulse parameters, selected within the group, which includes the frequency (T) so that the frequency (T) ranges between 60 seconds and 1/150th of a second, the frequency (T)/duration (t) ratio so that the ration ranges between 10 end 100,000, the intensity (I) so that the intensity (I) generates a magnetic field in the magnetic element, which ranges between 0.05 Tesla and 10 Teslas. 20. The method according to claim 16, further comprising the step of determining the time interval elapsed, since the preceding commutation and/or electric pulse (9a-c), and this time interval is used as commutation and/or pulse parameter. 21. The method according to claim 16, further comprising the step of using at least two magnetocaloric elements (4b, 4c) which have different magnetocaloric characteristics and which are interconnected one of serially, in parallel and as a serial/parallel combination. 22. The method according to claim 21, further comprising the step of using at least two electromagnets (2b, 2c), each one associated to a magnetocaloric element (4b, 4c), and at least two power supplies (3b, 3c), and n successive phases, a first magnetocaloric element (4b) is used on its own, then a first magnetocaloric element (4b) and a second magnetocaloric element (4c) are used simultaneously end finally, the second magnetocaloric element (4c) is used on its own so as to combine the magnetocaloric properties of the first and second magnetocaloric elements (4b, 4c).
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