| 摘要 |
<p>A variable capacity compressor for refrigeration systems such as air conditioners and heat pumps comprising an outer casing having a lubricant sump in the lower portion thereof, a crankcase internally spring mounted within the outer casing and having a pair of parallel, vertical crankshafts rotatably supported therein, wherein the crankshafts are arranged in side-by-side relationship, and at least two expandable chamber pumps, which may be piston, rotary or screw type, driven by the crankshafts. A pair of independently controlled electric motors have their rotors drivingly connected to the crankshafts, and in one embodiment of the invention, the motors have a common stator with two independently controlled sets of windings. In a further embodiment of the invention, two crankcases are provided, sharing a common lubricant sump.</p> |
