US 7,488,378 B2
Device for separating oil from an oil-air separator of an oil reservoir
Pieter Van Den Berghe, Aartselaar (Belgium)
Assigned to Atlas Copco Airpower, naamloze vannootschap, Wilrijk (Belgium)
Appl. No. 11/667,298
PCT Filed Nov. 03, 2005, PCT No. PCT/BE2005/000153
§ 371(c)(1), (2), (4) Date May 08, 2007,
PCT Pub. No. WO2006/047838, PCT Pub. Date May 11, 2006.
Claims priority of application No. 2004/0542 (BE), filed on Nov. 08, 2004.
Prior Publication US 2008/0092959 A1, Apr. 24, 2008
Int. Cl. B01D 46/42 (2006.01)
U.S. Cl. 96—408  [55/DIG. 19; 55/385.3; 55/423; 96/411; 137/107; 184/6.24] 10 Claims
OG exemplary drawing
 
1. Device for separating oil from the an air-oil separator of an oil reservoir, comprising a line for the an air-oil separator which is connected to the oil reservoir at one far end and in which is provided a suction pump for sucking in air, and wherein the other far end of the line is connected to a filter which is provided in a chamber which is connected to the oil reservoir by means of a return line, said chamber being provided with an outlet to the environment, and wherein a non-return valve is provided in the return line which permits air flow from the oil reservoir to the chamber, and prevents air flow in the opposite direction, and further wherein the non-return valve is provided with a small flow-back opening which enables the oil which has been separated in the chamber by the filter to flow back to the oil reservoir.