Magnetic refrigerator
First Claim
1. A magnetic refrigerator comprising:
- a generating unit which generates a magnetic field increased and reduced alternately;
a magnetic block including positive and negative magnetic segments which are alternately arranged with gaps and to which the magnetic field is applied, the positive magnetic segments producing heat depending on the increasing of the magnetic field and absorbing heat depending on the decreasing of the magnetic field, and the negative magnetic segments producing heat depending on the decreasing of the magnetic field and absorbing heat depending on the increasing of the magnetic field; and
a heat conducting unit configured to conduct heat between the positive and negative magnetic segments, which includes a conducting member which is inserted into the gap and removed from the gap, alternately, in accordance with the increasing or decreasing of the magnetic field, the positive and negative magnetic segments and the conducting member forming a heat conducting path in the magnetic block.
1 Assignment
0 Petitions
Accused Products
Abstract
In a magnetic refrigerator, a permanent magnet unit shaped like a hub is so rotated as to face an annular magnetic unit having magnetic blocks arranged in a circumferential direction. The permanent magnet unit is also arranged to be concentric with a magnetic unit and has an inner and outer diameters substantially equal to those of the magnetic unit. Each of the magnetic blocks has positive and negative magnetic segments alternately arranged with predetermined gaps. As the permanent magnet unit rotates, heat conducting members are inserted into and removed from the gaps between the magnetic segments of the magnetic block. This allows heat generated from the magnetic segments to conduct in one direction.
-
Citations
23 Claims
-
1. A magnetic refrigerator comprising:
-
a generating unit which generates a magnetic field increased and reduced alternately; a magnetic block including positive and negative magnetic segments which are alternately arranged with gaps and to which the magnetic field is applied, the positive magnetic segments producing heat depending on the increasing of the magnetic field and absorbing heat depending on the decreasing of the magnetic field, and the negative magnetic segments producing heat depending on the decreasing of the magnetic field and absorbing heat depending on the increasing of the magnetic field; and a heat conducting unit configured to conduct heat between the positive and negative magnetic segments, which includes a conducting member which is inserted into the gap and removed from the gap, alternately, in accordance with the increasing or decreasing of the magnetic field, the positive and negative magnetic segments and the conducting member forming a heat conducting path in the magnetic block. - View Dependent Claims (2, 3, 4, 5)
-
-
6. A magnetic refrigerator comprising:
-
a generating unit which generates a magnetic field increased and reduced, alternately; a magnetic unit having a circumferential direction and a radial direction, which includes magnetic blocks arranged in a circumferential direction, each of the magnetic blocks including an arrangement of positive and negative magnetic segments which are alternately arranged in the radial direction with gaps and to which the magnetic field is applied, the positive magnetic segments producing heat depending on the increasing of the magnetic field and absorbing heat depending on the decreasing of the magnetic field, and the negative magnetic segments producing heat depending on the decreasing of the magnetic field and absorbing heat depending on the increasing of the magnetic field; and a heat conducting unit configured to conduct heat between the positive and negative magnetic segments, which includes conducting members each of which is inserted into the corresponding gap and removed from the corresponding gap, alternately, in accordance with the increasing or decreasing of the magnetic field, the positive and negative magnetic segments and the conducting member forming a heat conducting path in the magnetic block. - View Dependent Claims (7, 8, 9, 10, 11, 12, 13, 14)
-
-
15. The magnetic refrigerator comprising:
-
a permanent magnet unit including permanent magnets, the permanent magnets being so separately arranged along a circumferential direction as to form a substantially hub shape and have a first inner and outer diameters in a radial direction; a rotating unit having a rotating shaft which supports the permanent magnet unit, configured to rotate the permanent magnet unit with the rotating shaft to produce a rotating magnetic field which is alternately increased and reduced depending on the rotation of the permanent magnet along the circumferential direction; a magnetic unit substantially formed into a hollow disk shape having a hollow space and a second inner and outer diameters which are substantially equal to the first inner and outer diameters, the magnetic unit including magnetic blocks arranged in the circumferential direction and concentric with the permanent magnet unit, every two of the magnetic blocks corresponding to each of the permanent magnets, each of the magnetic blocks including an arrangement of positive and negative magnetic segments which are alternately arranged in the radial direction with gaps, the positive magnetic segments producing heat depending on the increasing of the magnetic field and absorbing heat depending on the decreasing of the magnetic field, and the negative magnetic segments producing heat depending on the decreasing of the magnetic field and absorbing heat depending on the increasing of the magnetic field; and a heat conducting unit configured to conduct heat between the positive and negative magnetic segments, which includes conducting members each of which is inserted into the corresponding gap and removed from the corresponding gap, alternately, in accordance with the increasing or decreasing of the magnetic field, the positive and negative magnetic segments and the conducting member forming a heat conducting path in the magnetic block. - View Dependent Claims (16, 17, 18, 19, 20, 21, 22, 23)
-
Specification