Patent ID: 9574561
Date: 2017-02-21
CPC Classifications: F04C,F25B

Claim:
1. A scroll compressor, comprising: a casing forming an enclosed space; a fixed scroll comprising a fixed wrap that defines a spiral flow passage; an orbiting scroll rotatably disposed in the casing, and comprising an orbiting wrap adapted to mutually engage with the fixed wrap to form a plurality of compression chambers; and at least one injection passage provided in the fixed scroll to inject refrigerant into the plurality of compression chambers, wherein the fixed scroll comprises a plurality of injection holes in fluid communication with the spiral flow passage, wherein the plurality of injection holes includes a first injection hole and a second injection hole, and a third injection hole and a fourth injection hole positioned approximately one spiral turn away from the first and the second injection hole along the spiral flow passage, wherein the first injection hole and the third injection hole are formed on an outer lane of the spiral flow passage, and wherein the second injection hole and the fourth injection hole are formed on an inner lane of the spiral flow passage.