| 摘要 |
PROBLEM TO BE SOLVED: To obtain a pulse pipe refrigerating machine in which refrigeration performance is enhanced by making uniform the current velocity distribution of working fluid in a pulse pipe. SOLUTION: When working fluid passes through a through hole 81 made in a low temperature side equalizing plate 71 or a high temperature side equalizing plate 72, each through hole is formed such that working fluid having a high current velocity passes through a through hole having a large cross-sectional area of channel and working fluid having a low current velocity passes through a through hole having a small cross-sectional area of channel. After passing through the through holes 81 of the equalizing plates 71, 72, current velocity of the working fluid having a low current velocity is increased and the current velocity is made uniform as a whole. Since current velocity of the working fluid flowing into a pulse pipe through the equalizing plate is made uniform, refrigeration performance is prevented from lowering due to uneven current velocity.
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