Patent ID: 11966195
Assignee: FUJIFILM BUSINESS INNOVATION CORP.
Field: Chemical engineering (Chemistry)
Classification: CPC G  B  F | IPC B  F  G

Claim 0:
1. A minute-particle trapping device, comprising:
an air duct having a duct space through which air containing minute particles flows;
a first filter blocking the duct space in the air duct and having a honeycomb structure to trap minute particles contained in the air;
a second filter in the air duct downstream from the first filter in an air flow direction and blocking the duct space, the second filter comprising a nonwoven fabric folded in a wave pattern to trap minute particles contained in the air that have passed through the first filter; and
an air-current producing member configured to produce an air current in the duct space in the air duct in a direction in which the air is to be blown, wherein
the duct space in the air duct from the first filter to the second filter has a cross section that expands further toward the second filter,
the duct space in the air duct from the first filter to the second filter has a cross section that expands to elongate the second filter further than the first filter in one direction beyond one end of the first filter, and
the air-current producing member is downstream from the second filter in the air duct in the air flow direction, on an elongated side of the second filter and misaligned with the first filter.