Dry-sump reciprocating piston compressor with lubricant circuit

A dry-sump reciprocating piston compressor for closed refrigerant circuits, comprising:

• a crankcase-within which is defined a high-pressure portion communicating with a delivery pipe and a low-pressure portion communicating with a suction pipe, a crankshaft which by means of respective connecting rods drives one or more pistons sliding within corresponding cylinders, and a lubricant distribution circuit within said crankcase, wherein said lubricant distribution circuit comprises:
• a lubricant collection reservoir underlying said crankcase and communicating with it through one or more drain holes defined in the outer wall of the lower portion of said crankcase;
• one or more conduits internal to said crankcase into which the lubricant flows to be delivered to one or more points within said crankcase;
• a positive displacement pump that draws the lubricant from said reservoir through a suction line and feeds it to said one or more conduits;
• and wherein within said lubricant collection reservoir there is a compartment that delimits a suction chamber, the latter being separated from the remaining part of said reservoir by means of a baffle plate in which a small passage is defined for the transfer of lubricant into said suction chamber, wherein said one or more drain holes are bordered by respective flanges protruding from said crankcase for coupling by means of screws or bolts with corresponding flanges protruding superiorly from said tank.