| 摘要 |
The yarn cooling apparatus comprises an inner tube through which passes a liquid coolant, e.g. water, and in which there is disposed a coaxial cylinder having a spiral peripheral groove of wedge-shaped cross-section along which the yarn travels. Provided at the yarn outlet end of the coolant tube is a supporting member which has a fixed part with a groove of U-shaped cross-section through which the yarn travels and which extends in the direction of the axis of the coolant-carrying tube, and a movable part provided with air and coolant passages arranged to cover and uncover the groove, according to its position.
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