Regenerator
AssigneeKabushiki Kaisha Toshiba
InventorsYoichi Tokai, Akiko Takahashi
Life of this patent
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Abstract
Disclosed is a regenerator loaded with a relatively cheap heat regenerative material which exhibits excellent specific heat, heat transfer capability and recuperativeness under cryogenic temperatures lower than, for example, the liquid nitrogen temperature. The regenerator is filled with a heat regenerative material comprising at least one R-M system compound, where R is at least one rare earth element selected from the group consisting of Y, La, Ce, Pr, Nd, Pm, Sm, Eu, Gd, Tb, Dy, HO, Er, Tm, Yb and Lu, and M is at least one metal selected from the group consisting of Al, Ga, In and Tl.
Claims20
A regenerator filled with a heat regenerative material comprising at least one compound represented by the following formula:
- RM.sub.0.5
- where R is at least one rare earth element selected from the group consisting of Y, La, Ce, Pr, Nd, Pm, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb and Lu;
- and M is at least one metal selected from the group consisting of Al, Ga, In and Tl.
A refrigerator comprising:
- a refrigerant;
- and
- a heat regenerative material for performing heat exchange between said refrigerant and itself, wherein said heat regenerative material has a composition consisting essentially of a compound represented by the following formula:
- RM.sub.0.5
- where R is at least one rare earth element selected from the group consisting of Y, La, Ce, Pr, Nd, Pm, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb and Lu;
- and M is at least one metal selected from the group consisting of Al, Ga, In and Tl.
A regenerator filled with a heat regenerative material comprising at least one compound represented by the following formula:
- (R1.sub.1-x R2.sub.x).sub.3 M1M2.sub.z
- where R1 is at least one element selected from the group consisting of Dy, Ho, Er, Tm and Yb;
- R2 is at least one element selected from the group consisting of Sc, Y, La, Ce, Nd, Sm, Eu, Gd, Tb and Lu;
- M1 is at least one metal selected from the group consisting of Al, Ga, In and Tl;
- and M2 is at least one element selected from the group consisting of C, Si, Ge and B;
- and x and z are individually defined as 0.ltoreq.x.ltoreq.1, 0 <z.ltoreq.1.
A refrigerator comprising:
- a refrigerant;
- and
- a heat regenerative material for performing heat exchange between said refrigerant and itself, wherein said heat regenerative material has a composition consisting essentially of a compound represented by the following formula:
- (R1.sub.1-x R2.sub.x).sub.3 M1M2.sub.z
- where R1 is at least one element selected from the group consisting of Dy, Ho, Er, Tm and Yb;
- R2 is at least one element selected from the group consisting of Sc, Y, La, Ce, Nd, Sm, Eu, Gd, Tb and Lu;
- M1 is at least one metal selected from the group consisting of Al, Ga, In and Tl;
- and M2 is at least one element selected from the group consisting of C, Si, Ge and B;
- and x and z are individually defined as 0.ltoreq.x.ltoreq.1, 0 <z.ltoreq.1.
Dependencies are inferred from the claim text.