To provide a filter device set in an exhausting device used for an experiment handling harmful substances or for an experiment generating harmful substances during the experiment, removing the harmful substances to discharge as normal air, and causing no leakage of the harmful substances attached to the filter device to the outside when replacing the filter device.
The filter device 1 has a prefilter 6 disposed to a filter 2 and is used being mounted to a rear panel 52 of the exhausting device. When replacing the filter device, the prefilter 6 is removed, the harmful substances 10 attached to a filtering surface of the filter 2 are covered with a plate, the periphery of the filter 2 is sealed, then the filter 2 is removed. Thus, the filter device can be replaced with no leakage of the harmful substances while the exhaust gas in the exhauster is exhausted.
HARUHARA SHINJI
MURAMATSU TETSUO
JP2004351283A | 2004-12-16 | |||
JP2003314873A | 2003-11-06 | |||
JPS6431098A | 1989-02-01 | |||
JPS6436019U | 1989-03-06 | |||
JPH07103533A | 1995-04-18 | |||
JPS6478770A | 1989-03-24 | |||
JPS6478770A | 1989-03-24 | |||
JP2004351283A | 2004-12-16 | |||
JP2003314873A | 2003-11-06 | |||
JPS6431098A | 1989-02-01 | |||
JPS6436019U | 1989-03-06 | |||
JPH07103533A | 1995-04-18 |
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