| 摘要 |
Fan intended in particular for equipping a tunnel for refrigeration of products such as food products, this tunnel having a gaseous current flowing through it, characterized in that it comprises at least one pair of funnels (1) fixed onto one face of a support (2) mounted so that it can rotate about a vertical axis (XX) and connected to a means of driving rotation; these funnels have their entrance apertures (4) arranged radially so as to allow the gaseous current to penetrate into them and to emerge from them at an accelerated speed via their exit aperture (5). One or several fans according to the invention can be arranged at appropriate places in the tunnel, their rotation speed being chosen so that the exit gas currents from the funnels ensure a high degree of heat transport while reducing the risk of undesirable movement of products passing by on a conveyor placed below the fans.
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