US 11,703,043 B2
Oil separator for a compressor and compressor assembly comprising said separator
Giulio Contaldi, Segrate (IT); and Stefano Murgia, Vimodrone (IT)
Assigned to ING. ENEA MATTEI S.P.A., Vimodrone (IT)
Appl. No. 16/604,053
Filed by ING. ENEA MATTEI S.P.A., Vimodrone (IT)
PCT Filed Apr. 24, 2018, PCT No. PCT/IB2018/052861
§ 371(c)(1), (2) Date Oct. 9, 2019,
PCT Pub. No. WO2018/198037, PCT Pub. Date Nov. 1, 2018.
Claims priority of application No. 202017000044768 (IT), filed on Apr. 24, 2017; and application No. 102017000086560 (IT), filed on Jul. 27, 2017.
Prior Publication US 2020/0072209 A1, Mar. 5, 2020
Int. Cl. F25B 43/02 (2006.01); B01D 5/00 (2006.01); B01D 35/00 (2006.01); F04B 39/02 (2006.01); F04B 39/04 (2006.01); B01D 46/00 (2022.01); F04B 39/14 (2006.01); F04B 39/16 (2006.01); B01D 21/00 (2006.01)
CPC F04B 39/02 (2013.01) [B01D 5/00 (2013.01); F04B 39/04 (2013.01); B01D 21/0051 (2013.01); B01D 46/003 (2013.01); B01D 46/0089 (2013.01); F04B 39/14 (2013.01); F04B 39/16 (2013.01)] 11 Claims
OG exemplary drawing
 
1. An oil separator (6) for separating oil from compressed air generated by a compressor, the separator comprising an oil tank (11) for compressor lubrication oil and a lid (12) for the tank, wherein the lid (12) integrally comprises a valve body (20) defining an outlet duct (27) of the tank (11), a head (28) of a coalescence filter (17) for separating oil from compressed air, a body of an anti-condensate valve (13), a body (31) of a minimum pressure valve (14) and the relative connection ducts, wherein the body (32) of the anti-condensate valve (13) defines a first chamber (60) housing a thermally sensitive element (34) of the anti-condensate valve and communicating with an air outlet duct (30) of the coalescence filter (17), and a second chamber (65) housing a shutter (66) operated by said thermally sensitive element and designed to interrupt the communication between an inlet duct (69) connecting the second chamber (65) to the minimum pressure valve (14) and a vent duct (68) when the temperature of the air in the first chamber reaches a predetermined threshold value.
 
5. An oil separator (6) for separating oil from compressed air generated by a compressor, the separator comprising an oil tank (11) for compressor lubrication oil and a lid (12) for the tank, wherein the lid (12) integrally comprises a valve body (20) defining an outlet duct (27) of the tank (11), a head (28) of a coalescence filter (17) for separating oil from compressed air, a body of an anti-condensate valve (13), a body (31) of a minimum pressure valve (14) and the relative connection ducts, wherein said minimum pressure valve (14) defines a first pressure threshold value, which ensures the correct lubrication of the compressor (4); said minimum pressure valve defining a concentrated load loss between an outlet duct (30) of the coalescence filter (17) and a delivery duct (37) for pressure values lower than the first threshold value, and
wherein said minimum pressure valve (14) defines a second pressure threshold value sufficient for supplying of the utility, said second value being greater than the first pressure threshold value but smaller than the maximum pressure defined by a pressure switch of the compressor (4), said minimum pressure valve (14) being designed to connect the outlet duct (30) of said coalescence filter (17) to said anti-condensate valve (13) for pressure values exceeding said second threshold value.