High displacement rate,scroll-type, fluid handling apparatus

A high volumetric displacement rate fluid handling apparatus comprising:

• a housing with an inlet and an outlet for the fluid;
• a first scroll set of at least two nested pair of fixed and movable spiral blades mounted in said housing, said first scroll set having an inlet and an outlet in fluid communication with said housing;
• a plate mounted within said housing that carries said movable blades;
• an eccentric drive operatively connected to said plate and said movable blades that causes said movable blades to orbit said fixed blades and thereby interact with the fluid in inter-blade pockets;
• said at least two pairs of fixed and movable blades being in a nested array and each extending angularly over about two revolutions to produce two inter-blade pockets in series per pair of said fixed and movable blades, one of said pockets closing in each cycle of operation;
• a second scroll set mounted in said housing formed of at least one pair of fixed and movable spiral blades that both extend angularly for multiple revolutions, said eccentric drive also propelling said movable spiral blades of said second stage scroll set to move in an orbital motion that creates a series of inter-blade pockets moving toward said housing outlet, said second scroll set having an inlet and an outlet;
• and
• a fluid connection between said outlet of said first scroll set to said inlet of said second scroll set, said second scroll set discharging the fluid from said second scroll set outlet to said housing outlet,
• said first scroll set having a volumetric displacement rate at its inlet that is greater than the volumetric displacement rate of said second scroll set.