| 摘要 |
A heating plant (10) for performs (20), comprises:—at least one tunnel (3, 3′) for the passage of a plurality of preforms (20)—a plurality of infrared radiation lamps (6) along the tunnel (3, 3′);—forced ventilation means (2) for generating a ventilating air flow (F2, F3) through the tunnel (3, 3′),—at least one recirculation channel (15, 15′) arranged to receive the ventilating air flow (F2, F3) exiting from the tunnel (3, 3′),—a mixing member (30), including a first inlet (31) for ambient air, a second inlet (32) for the ventilating air (F2, F3) and at least one mixed air flow outlet (F1), in which the mixing member (30) is shaped and arranged so as to convey the mixed air flow (F1) towards the forced ventilation means (2),—at least one mobile shutter (35) for regulating the degree of opening of the inlets (31, 32),—a hot air source (40);—flow means (45) for conveying the hot air from the source (40) towards the mixing member (30). |
| 主权项 |
1. A heating plant for plastic material performs, comprising:
at least one tunnel for the passage of a plurality of preforms to be heated; plurality of infrared radiation lamps arranged along said at least one tunnel for heating said plurality of preforms; forced ventilation means generating a ventilating air flow, said forced ventilation means being shaped and arranged so as to convey said ventilating air flow through said at least one tunnel; at least one recirculation channel arranged to receive said ventilating air flow exiting from said at least one tunnel; a mixing member, including at least one first inlet for ambient air, at least one second inlet communicating with said recirculation channel for receiving said ventilating air flow exiting from said at least one tunnel and at least one outlet of mixed air flow, said mixing member being shaped and arranged so as to convey said mixed air flow towards a suction side of said forced ventilation means; at least one mobile shutter for regulating an opening of said at least one first inlet or of said at least one second inlet; characterized in that said heating plant further comprises: a hot air source; flow means for conveying a flow of said hot air from said hot air source towards said mixing member. |
