US 11,988,221 B2
Refrigerant compressor with impeller having blades with wavy contour
Jin Yan, Tallahassee, FL (US); Tadeu Mendonca Fagundes, Tallahassee, FL (US); and Ryan Dingman, Boca Raton, FL (US)
Assigned to Danfoss A/S, Nordborg (DK)
Filed by Danfoss A/S, Nordborg (DK)
Filed on Nov. 28, 2022, as Appl. No. 17/994,453.
Claims priority of provisional application 63/302,154, filed on Jan. 24, 2022.
Prior Publication US 2023/0235748 A1, Jul. 27, 2023
Int. Cl. F04D 29/28 (2006.01)
CPC F04D 29/284 (2013.01) [F05D 2240/303 (2013.01); F05D 2240/304 (2013.01)] 18 Claims
OG exemplary drawing
 
1. A refrigerant compressor, comprising:
an impeller including a blade with a wavy contour, wherein the wavy contour substantially follows a sine wave, and wherein the wavy contour follows a streamwise direction.