Abstract: Device for oil cooling forming part of a mixture of compressed gas and oil from a compressor and directed to separator in a compression unit comprising an evaporator connected to said compressor, said separator being connected both to a condenser, in turn connected to said evaporator, and to said compressor by a conduit for oil supply to the compressor, characterized in that said conduit is connected by a line comprising an ejector to the conduit connecting the compressor to the separator, means being provided connecting the tank of the refrigerating fluid from the condenser to said ejector, so that a portion of oil from the separator passes through said ejector where vacuum is built up drawing a portion of the refrigerating fluid which is accordingly mixed with said mixture of compressed gas and oil to suitably cool down the oil forming part of said mixture.

Abstract: Apparatus capable of operating both as nitrogen generator and carbon dioxide absorber, particularly for the preservation under controlled atmosphere of fruit and vegetable products, comprising a generator in turn including a burner, having a mixture of air and fuel gas supplied thereto, and in which a combustion is effected, so that a mixture exits from the generator as comprising steam, nitrogen and carbon dioxide, two absorbers each of which for retaining carbon dioxide, connection means between the generator and absorbers, comprising a condenser, for the removal of the steam, so as to supply to either absorber only a mixture of nitrogen and carbon dioxide, means for feeding the gas exiting from either absorber to the cell or storage room containing the products, or alternatively to the outlet, means for connecting the cell with either absorber for supplying the cell atmosphere thereto, means by which when one of the abosrbers is operating to retain carbon dioxide of the gaseous mass from the burner or cell