| 摘要 |
A cooling device for generating a cold gas flow comprising a gas source and at least one first heat exchanger ( 4 ) having a connection ( 14 b) on the input side and a connection ( 15 b) on the output side being cooled using a cold source ( 10 ), is characterized in that the cooling device comprises at least one second heat exchanger ( 5 ) having a connection ( 14 a) on the input side and a connection ( 15 a) on the output side, wherein the first heat exchanger ( 4 ) and the second heat exchanger ( 5 ) are disposed in an evacuated container ( 11 ) and operate in parallel, the first heat exchanger ( 4 ) and the second heat exchanger ( 5 ) being connected, via their connections ( 15 a, 15 b) on the output side, to a common output line ( 8 ) into which they alternately supply the cleaned gas flow. The inventive cooling device may be operated with conventional gases for a long time period without any disturbances.
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