| 摘要 |
<p>A heat shrink tunnel has at least one wall in which a supply chamber is flow connected to the interior of said tunnel by way of a perforated baffle plate leading to a discharge chamber and a perforated plate to feed air from the discharge chamber to the interior of the tunnel. Structure is provided adjacent to each hole in the baffle plate to compound the turbulence in air passing from the supply chamber to the discharge chamber thereby to equalize the volume and velocity of air flow through the perforations in the plate leading from the discharge chamber.</p> |
