SCROLL COMPRESSOR Russian patent published in 2015 - IPC F04C18/02 

FIELD: machine building.

SUBSTANCE: invention relates to scroll compressors comprising intermediate injection machinery, and, in particular, to the structure increasing intensity of injection. The scroll compressor for intermediate injection has channel (55) for injection, located such that channel (55) for injection is connected with compression chamber (35a, 35b) directly after complete closing of its suction channel. Enclosure (42) of the orbital side has thick section comprising increasing section of the tooth thickness, its tooth thickness increases from beginning of twist to end of twist, and decreasing section of the tooth thickness, its tooth thickness decreases from the increasing section of the tooth thickness to end of twist, thus increasing the channel diameter (55) for injection in accordance with thick section.

EFFECT: intensity of injection flow can be increased, and worsening of the compressor efficiency, increasing of size and price of compression mechanism can be decreased.

6 cl, 10 dwg