US 12,168,984 B2
System and method for directing fluid flow in a compressor
Paul William Snell, York, PA (US); Bryson Lee Sheaffer, Mechanicsburg, PA (US); and Florin Valeriu Iancu, Silver Spring, MD (US)
Assigned to TYCO FIRE & SECURITY GMBH, Neuhausen am Rheinfall (CH)
Appl. No. 18/018,235
Filed by Johnson Controls Tyco IP Holdings LLP, Milwaukee, WI (US)
PCT Filed Jul. 30, 2021, PCT No. PCT/US2021/044013
§ 371(c)(1), (2) Date Jan. 26, 2023,
PCT Pub. No. WO2022/026897, PCT Pub. Date Feb. 3, 2022.
Claims priority of provisional application 63/059,006, filed on Jul. 30, 2020.
Prior Publication US 2023/0272804 A1, Aug. 31, 2023
Int. Cl. F04D 29/28 (2006.01); F04D 17/10 (2006.01); F25B 1/00 (2006.01); F25B 1/04 (2006.01); F25B 25/00 (2006.01); F25B 31/02 (2006.01)
CPC F04D 29/284 (2013.01) [F04D 17/10 (2013.01); F25B 1/005 (2013.01); F25B 1/04 (2013.01); F25B 25/005 (2013.01); F25B 31/02 (2013.01); F25B 2339/047 (2013.01); F25B 2400/23 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A compressor for a heating, ventilating, air conditioning, and refrigeration (HVAC&R) system, comprising:
an impeller, comprising:
a hub defining an impeller tip;
a plurality of blades coupled to the hub, wherein the plurality of blades defines a plurality of flow paths configured to direct a primary flow of working fluid therethrough; and
a shroud coupled to the plurality of blades, wherein the shroud comprises a radial shroud tip disposed upstream of the impeller tip relative to a flow direction of the primary flow of working fluid through the plurality of flow paths; and
a vane disposed upstream of the radial shroud tip, wherein the vane is configured to guide a vapor working fluid to flow into the plurality of flow paths, and the vane is separate from the plurality of blades.