| 摘要 |
FIELD: agriculture mechanical engineering. ^ SUBSTANCE: device comprises inner cylinder, perforated outer cylinder, air duct, fan, and air valve. Between inner and outer cylinders are rows of supplying ducts connected with the air duct through the space. The ducts have perforated surfaces and inconstant cross-section that diverges as one approaches the outer cylinder. ^ EFFECT: enhanced quality of drying. ^ 5 dwg |
