To allow collection from a working table without causing diffusion escape from the working table, and to enhance worker protection performance and diffusion preventive performance.
An intake and exhaust control means is provided to be erected vertically at one side of the working table 2, and to form an L-shape in a side face view together with the working table, the intake and exhaust control means is built in with a first fan 5 for sucking outside air blown out as an air curtain air flow, and a second fan 8 for discharging the outside air sucked into the intake and exhaust control means from a working space on a working face of the working table through an intake port to an outside via a filter, an air curtain air flow injection slit 19 for injecting the air curtain air flow along the working face of the working table is arranged along a side edge of the working table opposed to the intake and exhaust control means, an air curtain air flow injection slit is arranged in the working table to inject the air curtain air flow along a rise-up face of a working face side base of the intake and exhaust control means, and the intake port is opened in an upper part of the rise-up face of the intake and exhaust control means.
COPYRIGHT: (C)2011,JPO&INPIT
KITANO MASAYUKI
OGAWA NAOKI
| JP2005288241A | 2005-10-20 | |||
| JP2004211947A | 2004-07-29 | |||
| JP2005095708A | 2005-04-14 | |||
| JP2009291741A | 2009-12-17 |
Reiko Ohno