| 摘要 |
The oven (10) has an upstream air inlet zone (16a) with a flared air inlet port (22a), and a preform heating zone (16b) with a ventilation module (36) that guides a cooling air stream (A) coming from the inlet zone to preforms, where the oven is in the form of tunnel. A downstream air extraction zone (16c) is traversed by the air stream flown from the heating zone towards exterior of the oven. The inlet zone has an air distribution chamber i.e. plenum (18), which is interposed between the port and the module connected to the chamber, where the chamber is in the form of parallelepiped casing.
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