Abstract A compressor system such as a refrigerating system comprising a compressor for discharging a condensable gas in the gaseous phase thereof, means for introducing oil into the compressor and an oil separator for separating oil from the discharged gas and return the oil to said introducing means, characterised in that the oil separator is divided in a primary separator having in known manner an oil colllection chamber from the primary separator and containing an amount of an oil rest out-washing liquid consisting of the gas in the condensed phase thereof, the secondary separator including means for bringing the gas into washing contact with the liquid for washing out at least most of the oil still remaining in the gas, the secondary separator having a gas outlet from which the gas is fed to a condenser for condensing at least some of the gas, the condenser having a receiver for the condensed gas, this receiver being connected to the secondary separator so as to be operable to continuously or intermittently supply condensed gas to the secondary separator, this separator further having an outlet for condensed gas and means for continuously or intermittently supplying condensed gas from this outlet to means for injecting the condensed gas into the flow of gaseous gas passing or leaving the compressor, before or when the gas enters the primary oil separator.
A compressor system comprising a compressor for discharging a compressed, condensable gas in the gaseous phase thereof and an oil separator for separating oil from the discharged gas, said oil separator being divided in a primary separator having an oil collection chamber from which the separated oil is let out from the separator and a secondary separator mounted downstream of the flow of gas from the primary separator and containing an amount of the gas in the condensed phase thereof, said secondary separator including means for bringing the gas flow into washing contact with the condensed gas for washing out oil from the gas flow, the secondary separaTor having a gas outlet from which the gas flow thus cleaned is fed to a condenser for condensing at least some of the gas, the condenser having a receiver for the condensed gas, said receiver being connected to the secondary separator so as to be operable to supply condensed gas thereto, the secondary separator further having an outlet for condensed gas connected to means for injecting condensed gas into the flow of gaseous gas passing the compressor, at an injection place located upstream of the point of introduction of the gas flow into the primary separator.
Claim 2
Dependent Claim
204 words
A compressor system comprising a compressor for discharging a compressed, condensable gas in the gaseous phase thereof and an oil separator for separating oil from the discharged gas, said oil separator being divided in a primary separator having an oil collection chamber from which the separated oil is let out from the separator and a secondary separator mounted downstream of the flow of gas from the primary separator and containing an amount of the gas in the condensed phase thereof, said secondary separator including means for bringing the gas flow into washing contact with the condensed gas for washing out oil from the gas flow, the secondary separaTor having a gas outlet from which the gas flow thus cleaned is fed to a condenser for condensing at least some of the gas, the condenser having a receiver for the condensed gas, said receiver being connected to the secondary separator so as to be operable to supply condensed gas thereto, the secondary separator further having an outlet for condensed gas connected to means for injecting condensed gas into the flow of gaseous gas passing the compressor, at an injection place located upstream of the point of introduction of the gas flow into the primary separator.
Claim 3
Dependent Claim
37 words
A system according to claim 1, characterised in that the means for injecting the condensed gas into the gas flow are located in the pressure pipe between the discharge port of the compressor and the oil separator.
Claim 4
Dependent Claim
56 words
A system according to claim 1 characterised in that the secondary oil separator is provided with a level control device for the condensed gas, and that this device is operatively connected with means for controlling the supply of condensed gas to the separator so as to cause the condensed gas level to be maintained substantially constant.
Claim 5
Dependent Claim
34 words
A system according to claim 1, characterised in that the means for supplying condensed gas to the said injection means are controlled in accordance with the temperature of the pressure gas from the compressor.