Patent ID: 8118921

Claim:
A unit for accumulating and degassing oil in an oil system, the unit ( 1 ) comprising a reservoir ( 2 ) for accumulation of oil provided with one or several inlet and outlet ports ( 6 ), through which oil is allowed to flow into and out of the reservoir ( 2 ), characterized in: that the reservoir ( 2 ) comprises a first oil accumulation chamber ( 3 ) in which the oil is subjected to atmospheric pressure and in which the oil volume is allowed to vary, a second oil accumulation chamber ( 4 ) which is intended to be completely or at least nearly completely filled with oil and in which the oil is kept separated from direct contact with surrounding air, and a flow passage ( 7 ) between the second oil accumulation chamber ( 4 ) and the lower part of the first oil accumulation chamber ( 3 ); that an air-tight flexible member ( 11 ) in the form of a membrane or bag is arranged in the first oil accumulation chamber ( 3 ) in order to keep the oil in the first oil accumulation chamber separated from direct contact with surrounding air, the oil in the first oil accumulation chamber ( 3 ) being subjected to atmospheric pressure via this flexible member ( 11 ); and that the unit ( 1 ) comprises an apparatus ( 20 ) for degassing oil, which apparatus ( 20 ) is connected to the reservoir ( 2 ) and is provided with: an entrance ( 21 a ) for feeding oil into the apparatus ( 20 ), a first exit ( 22 a ) connected to the reservoir ( 2 ) for feeding oil out of the apparatus ( 20 ) and into the reservoir ( 2 ), a degassing room ( 30 ) in which oil is subjected to under-pressure for promoting separation of gas from the oil, a second exit ( 22 b ) connected to the degassing room ( 30 ) for discharging separated gas from the apparatus ( 20 ), an inlet ( 31 ) connected to the entrance ( 21 a ) for feeding oil into the degassing room ( 30 ), and an outlet ( 32 ) connected to the first exit ( 22 a ) for feeding oil out of the degassing room ( 30 ).