US 12,410,821 B2
Reducing cavitation, noise, and vibration in a pressure exchanger
Chinmay Vishwas Deshpande, Fremont, CA (US); Omprakash Samudrala, San Ramon, CA (US); Sujan Reddy Gudigopuram, San Ramon, CA (US); Alexander Patrick Theodossiou, Alameda, CA (US); Teymour Javaherchi, Piedmont, CA (US); and Anthony Kim Phan, San Jose, CA (US)
Assigned to Energy Recovery, Inc., San Leandro, CA (US)
Filed by Energy Recovery, Inc., San Leandro, CA (US)
Filed on Mar. 23, 2023, as Appl. No. 18/125,398.
Claims priority of provisional application 63/395,694, filed on Aug. 5, 2022.
Claims priority of provisional application 63/388,991, filed on Jul. 13, 2022.
Claims priority of provisional application 63/323,462, filed on Mar. 24, 2022.
Prior Publication US 2023/0304513 A1, Sep. 28, 2023
Int. Cl. F04F 13/00 (2009.01)
CPC F04F 13/00 (2013.01) 19 Claims
OG exemplary drawing
 
1. A pressure exchanger comprising:
a rotor configured to rotate to exchange pressure between a first fluid at a first pressure and a second fluid at a second pressure, wherein the rotor forms ducts that are routed from a first distal end of the rotor to a second distal end of the rotor, wherein the rotor forms chamfers on trailing edge rotor duct walls without forming chamfers on leading edge rotor duct walls;
a first end cover disposed at the first distal end of the rotor, wherein the first end cover forms a high pressure in (HPIN) port configured to provide the first fluid at the first pressure into the ducts, and wherein the first end cover forms a low pressure out (LPOUT) port configured to receive the first fluid from the ducts at a third pressure that is lower than the first pressure; and
a second end cover disposed at the second distal end of the rotor, wherein the second end cover forms a low pressure in (LPIN) port configured to provide the second fluid at the second pressure into the ducts and forms a high pressure out (HPOUT) port configured to receive the second fluid from the ducts at a fourth pressure that is higher than the second pressure.