US 12,274,958 B2
Filtration and deaeration system
Mike J. Madsen, Chaska, MN (US); and Michael J. Cronin, Apple Valley, MN (US)
Assigned to Donaldson Company, Inc., Bloomington, MN (US)
Appl. No. 17/771,141
Filed by Donaldson Company, Inc., Bloomington, MN (US)
PCT Filed Oct. 23, 2020, PCT No. PCT/US2020/057084
§ 371(c)(1), (2) Date Apr. 22, 2022,
PCT Pub. No. WO2021/081341, PCT Pub. Date Apr. 29, 2021.
Claims priority of provisional application 62/924,901, filed on Oct. 23, 2019.
Prior Publication US 2022/0362687 A1, Nov. 17, 2022
Int. Cl. B01D 19/00 (2006.01); B01D 29/58 (2006.01); B01D 36/00 (2006.01); B01D 46/24 (2006.01)
CPC B01D 19/0031 (2013.01) [B01D 29/58 (2013.01); B01D 36/001 (2013.01); B01D 46/24 (2013.01); B01D 19/0042 (2013.01); B01D 2201/298 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A deaeration system comprising:
a primary filter element having primary filter media extending between a first end and a second end, the primary filter media having an upstream side and a downstream side;
a housing spaced from the upstream side of the primary filter media to define a primary fluid flow path from the first end towards the second end, wherein the system defines a primary fluid inlet between the first end of the primary filter media and the housing, a primary fluid outlet on the second end of the primary filter media extending outward from the upstream side of the primary filter media, and a primary liquid outlet extending from the downstream side of the primary filter media; and
a secondary filter element having secondary filter media having an upstream surface and a downstream surface, the secondary filter media extending from a third end to a fourth end, wherein the system defines a secondary fluid inlet that is the primary fluid outlet, a secondary liquid outlet that is the downstream surface of the secondary filter media, and a gas outlet on the fourth end, wherein the secondary fluid inlet is towards the third end.