IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
US-0745062
(2008-11-25)
|
등록번호 |
US-8418476
(2013-04-16)
|
우선권정보 |
FR-07 08472 (2007-12-04) |
국제출원번호 |
PCT/FR2008/001639
(2008-11-25)
|
§371/§102 date |
20100527
(20100527)
|
국제공개번호 |
WO2009/098391
(2009-08-13)
|
발명자
/ 주소 |
- Heitzler, Jean-Claude
- Muller, Christian
|
출원인 / 주소 |
- Cooltech Applications S.A.S.
|
대리인 / 주소 |
|
인용정보 |
피인용 횟수 :
3 인용 특허 :
8 |
초록
▼
A generator comprising at least one thermal stage having magnetocaloric elements (2) arranged around an axis and a magnetic arrangement (3) supported by a drive shaft (30) that rotates about the axis to subject the elements to a variation in magnetic field. The generator comprises pistons (70) to fo
A generator comprising at least one thermal stage having magnetocaloric elements (2) arranged around an axis and a magnetic arrangement (3) supported by a drive shaft (30) that rotates about the axis to subject the elements to a variation in magnetic field. The generator comprises pistons (70) to force heat transfer fluid through the elements with the pistons being driven in reciprocating translation within chambers (73) by at least one cam (71) that is rotationally driven the drive shaft (30). The generator comprises a forced circulation unit (8a) having planet gears (80) arranged around the central axis, supported by the body (72) of the generator and meshing with an inner crown gear (81) integral with the cam (71). Each gear (80) forms a gear pump that mixes the heat transfer fluid and places the fluid in forced circulation in the tanks (74) and the chambers (73).
대표청구항
▼
1. A magnetocaloric generator (1) comprising: at least one thermal stage (10) being fitted with active elements (2) made of a magnetocaloric material and arranged around a central axis (A),a magnetic arrangement (3) supported by a drive shaft (30) being rotatable around the central axis (A) by an ac
1. A magnetocaloric generator (1) comprising: at least one thermal stage (10) being fitted with active elements (2) made of a magnetocaloric material and arranged around a central axis (A),a magnetic arrangement (3) supported by a drive shaft (30) being rotatable around the central axis (A) by an actuator and arranged to subject the active elements (2) to a variation in magnetic field,at least one heat transfer fluid contained in the generator (1) and being forced through the active elements (2) by pushing means (7, 180),at least one cold exchange chamber (6) and one hot exchange chamber (5) respectively coupled to external utilization circuits,a means for forcing circulation (8a, 8b, 8c, 180) of the heat transfer fluid, wherein the means for forcing circulation (8a, 8b, 8c, 180) are integrated in an inner volume of the generator (1), are coupled to the drive shaft (30) to be driven by the actuator rotating the magnetic arrangement (3), and comprising fluid passages (82, 87, 88, 187, 188) located inside the generator to facilitate circulation and simultaneous mixing of the heat transfer fluid inside the generator. 2. The generator according to claim 1, wherein the pushing means (7) comprise at least one piston (70) arranged to push the heat transfer fluid through the active elements (2) and be driven in reciprocating translation by at least one cam (94) coupled to the drive shaft (30), the means for forcing circulation (8c) comprise at least one piston pump with at least one central piston (90) freely supported by the drive shaft (30) and driven in reciprocating translation by the cam (94). 3. The generator according to claim 2, wherein the cam (94) comprises an inner crown gear (93) coupled for rotation with the drive shaft (30) by a planetary gear train (91, 92). 4. The generator according to claim 1, wherein the means forcing circulation (8b) comprise at least one planet gear (84) meshing with a drive gear (85) integral with the drive shaft (30) and associated with a pump housing (86) fitted with channels (87) for circulation of the heat transfer fluid, and the planet gear (84) associated with the pump housing (86) forms a gear pump. 5. The generator according to claim 1, wherein the pushing means (7) comprise at least one piston (70) arranged to force the heat transfer fluid through the active elements (2) and be driven in reciprocating translation by at least one cam (71) coupled for rotation to the drive shaft (30), the means for forcing circulation (8a) comprise small planet gears (80) arranged around the central axis (A), supported by a body (72) of the generator (1) and meshing with an inner crown gear (81) integral with the cam (71), and fluid passages (82), with each of the small planet gears (80) forming a mini gear pump. 6. The generator according to claim 5, wherein the means for forcing circulation (8a) comprise at least one turbine (83) coupled to the drive shaft (30). 7. The generator according to claim 1, wherein the means for forcing circulation (180) simultaneously forming the pushing means. 8. The generator according to claim 7, wherein the means for forcing circulation (180) comprise two assemblies (181) arranged on either side of the thermal stage (10) and angularly offset, each assembly (181) comprising planet gears (182) arranged around the central axis (A), meshing with an inner crown gear (183) integral with a body (72) of the generator (1) and each linked in rotation to one (184) of two toothed wheels (184, 184′) of a gear (185) forming a mini gear pump, the gear (185) is integrated in a support (186) is driven in rotation by the drive shaft (30), and the assemblies (181) comprise passages enabling the heat transfer fluid to circulate between either the hot or the cold exchange chamber (5, 6) concerned and the active elements (2). 9. A magnetocaloric generator (1) comprising: at least one thermal stage (10) being fitted with active elements (2) made of a magnetocaloric material and arranged around a central axis (A) within a body, the active elements being rotationally fixed in relation to the body,a magnetic arrangement (3) being fixed to a drive shaft (30) such that the magnetic arrangement and the drive shaft are driven to rotate about the central axis (A) by an actuator, the magnetic arrangement and the active elements are arranged with respect to each other such that rotation of the magnetic arrangement subjects the active elements (2) to a variation in magnetic field,at least one heat transfer fluid contained in the generator (1) and being forced through the active elements (2) by pushing means (7, 180),at least one cold exchange chamber (6) and one hot exchange chamber (5) respectively coupled to external utilization circuits, anda circulator (8a, 8b, 8c, 180) that forces circulation of the heat transfer fluid, the circulator is located within an inner volume of the generator (1), the circulator is coupled to and rotationally driven by the drive shaft (30), and the force circulator displaces the heat transfer fluid through fluid passages (82, 87, 88, 187, 188) located inside the generator to facilitate circulation and simultaneous mixing of the heat transfer fluid inside the generator.
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