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.