| 摘要 |
PURPOSE: A coil type vacuum drying apparatus is provided to improve drying efficiency with reducing drying time for an object to be dried by enlarging a heating area of the object to be dried. CONSTITUTION: A plurality of first auxiliary pipes(120) vertically passes through a hollow shaft(110) which passes through a center of a drying container(20). A wing(121) is installed at end portions of the first auxiliary pipes(120). The second auxiliary pipe(130) having a coil shape is installed at an outer portion of the hollow shaft(110). One end of the second auxiliary pipe(130) is connected to a first auxiliary pipe(120) positioned at a front portion of the drying container(20). The other end of the second auxiliary pipes(130) is connected to the other first auxiliary pipe(120) positioned at a rear portion of the drying container(20).
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