JPS6441744A - Draft chamber of spout type - Google Patents

Abstract

PURPOSE:To keep a blower from getting dirty by providing a penetrating flow type blower on both side sections of an opening in the main body of a chamber and letting the outside air flow in from both sides of the opening and drawing the air from the upper section to generate artificial spouts in the main body. CONSTITUTION:A penetrating flow type blower 4 which has a slender and long shape is provided at the insides of both end sections 3 and 3 of an opening section 7 of the main body 2 of a chamber which has a horizontal U-shaped wall face. When the outside air W is sucked in through an air suction port 5, an air curtain is formed in the penetrating flow type blower 4, and the air is discharged into the main body 2 of the chamber from a discharge port 6. The blast volume of the air curtain that is drawn from both end sections 3 and 3 of the opening section becomes by itself to have a controlled air flow speed at the face of the opening. And, when the air is sucked into the chamber main body 2 through an air suction pipe 8 which is provided at the upper section of the main body 2, two spouts can be generated at both side sections in the main body 2 of the chamber. With this arrangement it is possible to keep the blower from getting dirty.