US 12,474,083 B2
Scroll compressor with intermediate injection
Scott J. Smerud, La Crosse, WI (US); and Derrick Lepak, Onalaska, WI (US)
Assigned to TRANE INTERNATIONAL INC., Davidson, NC (US)
Filed by TRANE INTERNATIONAL INC., Davidson, NC (US)
Filed on Feb. 20, 2024, as Appl. No. 18/582,353.
Application 18/582,353 is a continuation in part of application No. 18/175,974, filed on Feb. 28, 2023, granted, now 12,338,818.
Prior Publication US 2024/0288197 A1, Aug. 29, 2024
This patent is subject to a terminal disclaimer.
Int. Cl. F04C 29/00 (2006.01); F04C 18/02 (2006.01); F04C 29/02 (2006.01); F24F 13/20 (2006.01)
CPC F24F 13/20 (2013.01) [F04C 18/0215 (2013.01); F04C 18/0261 (2013.01); F04C 29/0007 (2013.01); F04C 2210/10 (2013.01); F04C 2230/602 (2013.01); F24F 2013/202 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A scroll compressor, comprising:
a compressor housing containing a suction chamber, a discharge chamber, and intermediate injection chambers;
an orbiting scroll member and a non-orbiting scroll member intermeshed to form compression pockets within the compressor housing, the compression pockets configured to suction from the suction chamber and discharge into the discharge chamber, the non-orbiting scroll member including intermediate injection ports fluidly connecting the intermediate injection chambers to the compression pockets; and
at least three bands disposed within the compressor housing, each of the at least three bands extending between the non-orbiting scroll member and the compressor housing, the intermediate injection chambers being defined by pairs of the at least three bands.
 
13. A heating, ventilation, air conditioning, and refrigeration (HVACR) system, comprising:
a refrigerant circuit including a condenser, an expander, an evaporator, and a scroll compressor fluidly connected, a working fluid flowing through the refrigerant circuit, wherein the scroll compressor includes:
a compressor housing containing a suction chamber, a discharge chamber, and intermediate injection chambers,
an orbiting scroll member and a non-orbiting scroll member intermeshed to form compression pockets within the compressor housing, the compression pockets configured to suction from the suction chamber and discharge into the discharge chamber, the non-orbiting scroll member including intermediate injection ports fluidly connecting the intermediate injection chambers to the compression pockets, and
at least three bands disposed within the compressor housing, each of the at least three bands extending between the non-orbiting scroll member and the compressor housing, and the intermediate injection chambers being defined by pairs of the at least three bands.
 
19. A method of making a scroll compressor, comprising:
placing an upper portion of a compressor housing over a non-orbiting scroll member, the upper portion of the compressor housing surrounding the non-orbiting scroll member, and at least three bands being disposed between the upper portion of the compressor housing and the non-orbiting scroll member; and
interference fitting the upper portion of the compressor housing onto the non-orbiting scroll member via the at least three bands, wherein the interference fitting forms intermediate injection chambers defined by pairs of the at least three bands, the upper portion of the compressor housing, and the non-orbiting scroll member, the intermediate injection chambers fluidly connecting intermediate injection inlets in the compressor housing to intermediate injection ports in the non-orbiting scroll member.