| 摘要 |
The present invention relates to a hot air supply device for a fiber drying machine that distributes hot air uniformly by variably forming the cross section of a supply channel of hot air, thereby granting resistance to the supply flow of the hot air, and has a structure thereof improved to be able to by-pass the hot air to prevent thermal damage to a fiber fabric when the progress of the fabric is stopped. The hot air supply device for a fiber drying machine according to the present invention comprises: a heating device for supplying hot air into a chamber; a duct member arranged in the chamber to guide the hot air generated from the heating device; upper and lower branching ducts connected to the duct member, partitioned by a middle partition wall to have first and second guiding channels, and branching and transmitting the hot air transmitted from the duct member; upper and lower hot air spray ducts connected to intercommunicate with the upper and lower branching ducts respectively and being provided with the hot air branched from the upper and lower branching ducts respectively to spray the hot air simultaneously to the upper part and the lower part of a fiber fabric being transferred into the chamber; first and second circulation fans arranged inside the upper and lower branching ducts respectively to be able to rotate and forcibly circulating the hot air by blowing the hot air, which has been guided from the duct member during rotation, toward the upper and lower hot air spray ducts; and first and second driving motors driven by having an external power applied thereto and having a rotating speed controlled by a control part to provide a driving force to the first and second circulation fans. |
