Scroll compressor with a shunt pulsation trap

摘要

A shunt pulsation trap for a scroll compressor reduces gas pulsations, NVH and improves off-design efficiency. Generally, a scroll compressor with the shunt pulsation trap has a pair of orbiting and stationary scrolls for forming a compression chamber that moves gas pockets from a suction port to a discharge port with internal compression. The shunt pulsation trap is configured to trap and attenuate as pulsations before the discharge port and comprises a pulsation trap chamber adjacent to the compression chamber, therein housed various gas pulsation dampening means or gas pulsation containment means, at least one trap inlet port branching off from the compression chamber into the pulsation trap chamber and a trap outlet port communicating with the compressor discharge chamber after the discharge port.

主权项

1. A scroll compressor, comprising:
a. a pair of scrolls forming at least one compression chamber with a peripheral suction port and a center discharge port, wherein an orbiting one of the pair of scrolls rotates relative to a stationary one of the pair of scrolls to move gas pockets in a flow direction from the peripheral suction port towards the center discharge port; and b. a compressor discharge chamber in series with and following the center discharge port; and c. a shunt pulsation trap apparatus comprising a pulsation trap chamber adjacent to said compression chamber, at least one pulsation dampener positioned within the pulsation trap chamber, at least one trap inlet branching off from said compression chamber before said discharge port in said flow direction and connecting said compression chamber to said pulsation trap chamber so that at least a portion of said compression chamber and said pulsation trap chamber are arranged in parallel, and at least one trap outlet connecting said pulsation trap chamber to said compressor discharge port, wherein said scroll compressor achieves gas pulsation and NVH reduction at said pulsation trap chamber and improving compressor off-design efficiency.