US 12,270,422 B2
Pressure exchanger
Stig Kildegaard Andersen, Krusaa (DK); Poul Erik Hansen, Aabenraa (DK); Georg Herborg Enevoldsen, Nordborg (DK); and Kevin Evald, Nordborg (DK)
Assigned to DANFOSS A/S, Nordborg (DK)
Filed by Danfoss A/S, Nordborg (DK)
Filed on Aug. 2, 2022, as Appl. No. 17/878,991.
Claims priority of application No. 21189639 (EP), filed on Aug. 4, 2021.
Prior Publication US 2023/0043692 A1, Feb. 9, 2023
Int. Cl. F04F 13/00 (2009.01)
CPC F04F 13/00 (2013.01) 12 Claims
OG exemplary drawing
 
1. A pressure exchanger with a valve system comprising a cylinder barrel, two valve plates and two port plates, wherein the cylinder barrel comprises at least one cylinder which accommodates a piston, wherein the pressure exchanger comprises a piston braking system and that the piston comprises a pressure relief arrangement, wherein the piston comprises two sides facing in a longitudinal direction of the cylinder, and wherein the pressure relief arrangement comprises at least temporarily a fluidic connection between the two sides of the piston.