Magnetocaloric material structure

Abstract

A magnetocaloric material structure is disclosed. The magnetocaloric material structure includes a magnetocaloric material body and a plurality of channels. The channels are located in the magnetocaloric material body. The cross-section of the channels has a center disposed according to the following formula: L 3 2 ≠L 1 2 +L 2 2 . Wherein, L 1 is the minimum value of the length of the lines between the adjacent centers parallel or perpendicular to a direction; L 2 is the maximum value of the length of the lines between the adjacent centers parallel or perpendicular to the direction; L 3 is the minimum value of the length of the lines between the adjacent centers not parallel or perpendicular to the direction. Another magnetocaloric material structure, which includes a magnetocaloric material body and a plurality of channels, is disclosed. The cross-section of each channel is in a non-circular and non-rectangular shape, which is a symmetric or asymmetric shape.

1 . A magnetocaloric material structure, comprising:
 a magnetocaloric material body; and   a plurality of channels configured inside the magnetocaloric material body, wherein a cross-section of each of the channels has a center, and the centers of the channels are arranged based on the following formula of:
     L   3   2   ≠L   1   2   +L   2    2   
   wherein, L 1  is a minimum distance between adjacent two of the centers while a line passes through the two adjacent centers is parallel to or perpendicular to a direction, L 2  is a maximum distance between adjacent two of the centers while a line passes through the two adjacent centers is parallel to or perpendicular to the direction, and L 3  is a minimum distance between adjacent two of the centers while a line passes through the two adjacent centers is not parallel to or perpendicular to the direction.   
     
     
         2 . The magnetocaloric material structure of  claim 1 , wherein the direction is a magnetic direction passing through the magnetocaloric material body. 
     
     
         3 . The magnetocaloric material structure of  claim 1 , wherein the center is a geometrical center or a gravity center. 
     
     
         4 . The magnetocaloric material structure of  claim 1 , wherein the channels are arranged in misalignment. 
     
     
         5 . The magnetocaloric material structure of  claim 1 , wherein a working fluid flows through the channels. 
     
     
         6 . The magnetocaloric material structure of  claim 5 , wherein the working fluid comprises an anti-corrosion additive, an anti-freeze additive, an additive for reducing a resistance between the working fluid and walls of the channels, or their combination. 
     
     
         7 . The magnetocaloric material structure of  claim 1 , wherein L 1  is equal to 0. 
     
     
         8 . A magnetocaloric material structure, comprising:
 a magnetocaloric material body; and   a plurality of channels configured inside the magnetocaloric material body, wherein a cross-section of each of the channels is in a non-circular and non-rectangular shape, and the non-circular and non-rectangular shape is a symmetric shape or an asymmetric shape.   
     
     
         9 . The magnetocaloric material structure of  claim 8 , wherein the symmetric shape is a triangle, a rhombus, a kite, a trapezoid, a polygon (pentagon, hexagon or more), an ellipse, a drop shape, a shuttle shape, a sector, or their combinations. 
     
     
         10 . The magnetocaloric material structure of  claim 8 , wherein a corner of the cross-section in the non-circular and non-rectangular shape is a round corner, a non-sharp corner, or their combination. 
     
     
         11 . The magnetocaloric material structure of  claim 8 , wherein the channels are arranged in misalignment. 
     
     
         12 . The magnetocaloric material structure of  claim 8 , wherein the non-circular and non-rectangular shape has a corner with an acute angle. 
     
     
         13 . The magnetocaloric material structure of  claim 8 , wherein a working fluid flows through the channels. 
     
     
         14 . The magnetocaloric material structure of  claim 13 , wherein the working fluid comprises an anti-corrosion additive, an anti-freeze additive, an additive for reducing a resistance between the working fluid and walls of the channels, or their combination.