US 11,890,570 B2
Filter device and method for switching on and/or switching off such filter device
Stefaan Boel, Wilrijk (BE); Marc Steijnen, Wilrijk (BE); Sylwester Manski, Wilrijk (BE); and Peter Waeterschoot, Kruibeke (BE)
Assigned to ATLAS COPCO AIRPOWER N.V., Wilrijk (BE)
Appl. No. 15/733,957
Filed by ATLAS COPCO AIRPOWER, N.V., Wilrijk (BE)
PCT Filed Jun. 19, 2019, PCT No. PCT/IB2019/055136
§ 371(c)(1), (2) Date Dec. 1, 2020,
PCT Pub. No. WO2020/003057, PCT Pub. Date Jan. 2, 2020.
Claims priority of application No. 2018/5446 (BE), filed on Jun. 26, 2018.
Prior Publication US 2021/0229019 A1, Jul. 29, 2021
Int. Cl. B01D 46/42 (2006.01); B01D 46/00 (2022.01); B01D 46/24 (2006.01)
CPC B01D 46/4272 (2013.01) [B01D 46/0004 (2013.01); B01D 46/0043 (2013.01); B01D 46/0087 (2013.01); B01D 46/2414 (2013.01); B01D 2271/02 (2013.01)] 19 Claims
OG exemplary drawing
 
1. A filter device for separating impurities from a gas to be purified,
whereby the filter device (1) includes a filter housing (2) consisting of a lid (3) and a pot (4);
whereby the lid (3) is provided with an inlet (6) for gas to be purified and an outlet (7) for purified gas;
whereby in the pot (4) a filter element (9) is installed, which filter element (9) consists of a top cap (10) and a bottom cap (11) with a filter cartridge (12) in between;
whereby the top cap (10) is provided with an inlet duct (17) with an entrance (18), which entrance (18) can connect to the inlet (6) of the lid (3) in such a way that the gas to be purified is passed through the inlet duct (17) to the filter cartridge (12); and
where there is a space (21) between the lid (3) and the top cap (10) which can be connected to the outlet (7) of the lid (3),
characterized in that the filter device (1) is further provided with a switching element (22) with an inlet port (23) and an outlet port (24), the switching element (22) being configured in such a way that
it can be installed rotatably in the lid (3); and
it can be rotated between on the one hand an off-position, in which the inlet port (23) or the outlet port (24) connects to respectively the inlet (6) or outlet (7) of the lid (3), and on the other hand a twisted position, in which this is not the case and in which the entrance (18) of the inlet duct (17) of the top cap (10) can connect to the inlet (6) of the lid (3).