| US 7,571,616 B2 | ||
| Cooling apparatus for articles operated at low temperature | ||
| Kazunori Yamanaka, Kawasaki (Japan); and Teru Nakanishi, Kawasaki (Japan) | ||
| Assigned to Fujitsu Limited, Kawasaki (Japan) | ||
| Filed on Apr. 25, 2005, as Appl. No. 11/113,200. | ||
| Application 11/113200 is a continuation of application No. PCT/JP03/04028, filed on Mar. 28, 2003. | ||
| Prior Publication US 2005/0204748 A1, Sep. 22, 2005 | ||
| Int. Cl. F25B 21/02 (2006.01) | ||
| U.S. Cl. 62—3.7 [62/3.2; 62/335] | 9 Claims |
| 1. A cooling apparatus for articles operated at a low temperature, comprising:
a refrigerating machine;
a cold head arranged in the refrigerating machine;
a first Peltier element fixed to and thermally contacted with the cold head; and
a second Peltier element fixed to and thermally contacted with the cold head;
a first article arranged in thermal contact with the first Peltier element;
a second article arranged in thermal contact with the second Peltier element,
wherein the first and second articles are cooled to different temperatures,
the first and second Peltier elements are arranged so that respective heat absorbing faces thereof are directed to the cold
head,
a first metallic block is provided on a surface of the first Peltier element on the opposite side to the cold head, the first
article is attached to the first Peltier element via the first metallic block, a second metallic block is provided on a surface
of the second Peltier element on the opposite side to the cold head, the second article is attached to the second Peltier
element via the second metallic block, and
a heater is provided for each of the first and second metallic blocks.
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