US 12,338,818 B2
Scroll compressor with intermediate injection
Derrick Lepak, Onalaska, WI (US); and Scott J. Smerud, La Crosse, WI (US)
Assigned to TRANE INTERNATIONAL INC., Davidson, NC (US)
Filed by TRANE INTERNATIONAL INC., Davidson, NC (US)
Filed on Feb. 28, 2023, as Appl. No. 18/175,974.
Prior Publication US 2024/0287985 A1, Aug. 29, 2024
This patent is subject to a terminal disclaimer.
Int. Cl. F04C 18/02 (2006.01); F04C 2/02 (2006.01); F04C 29/00 (2006.01); F04C 29/04 (2006.01); F25B 31/02 (2006.01)
CPC F04C 2/025 (2013.01) [F04C 18/0207 (2013.01); F04C 18/0246 (2013.01); F04C 18/0253 (2013.01); F25B 31/026 (2013.01); F04C 2230/60 (2013.01); F04C 2240/30 (2013.01)] 19 Claims
OG exemplary drawing
 
1. A scroll compressor, comprising:
a compressor housing containing a suction chamber, a discharge chamber, and an intermediate injection chamber;
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 an intermediate injection port fluidly connecting the intermediate injection chamber to at least one of the compression pockets; and
a first band and a second band disposed within the compressor housing and each extending between the non-orbiting scroll member and the compressor housing, the intermediate injection chamber being defined by the first band and the second band.
 
11. A heating, ventilation, air conditioning, and refrigeration (HVACR) system, comprising:
a refrigerant circuit including a condenser, at least one 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 an intermediate injection chamber,
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 an intermediate injection port fluidly connecting the intermediate injection chamber to at least one of the compression pockets, and
a first band and a second band each extending between the non-orbiting scroll member and the compressor housing, the intermediate injection chamber being defined by the first band and the second band.
 
17. 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 a first band and a second band each 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 first band and the second band, wherein the interference fitting forms an intermediate injection chamber defined by the first band, the second band, the upper portion of the compressor housing, and the non-orbiting scroll member, the intermediate injection chamber fluidly connecting an intermediate injection inlet in the compressor housing to an intermediate injection port in the non-orbiting scroll member.