US 12,281,660 B2
Ejector device
Gary Anthony Short, Nottinghamshire (GB); and Jacob Thomas Roberts, Nottinghamshire (GB)
Assigned to TRANSVAC SYSTEMS LIMITED, Alfreton (GB)
Appl. No. 17/772,315
Filed by TRANSVAC SYSTEMS LIMITED, Alfreton (GB)
PCT Filed Nov. 5, 2020, PCT No. PCT/GB2020/052796
§ 371(c)(1), (2) Date Apr. 27, 2022,
PCT Pub. No. WO2021/090004, PCT Pub. Date May 14, 2021.
Claims priority of application No. 1916064 (GB), filed on Nov. 5, 2019.
Prior Publication US 2022/0364577 A1, Nov. 17, 2022
Int. Cl. F04F 5/10 (2006.01); F04F 5/04 (2006.01); F04F 5/20 (2006.01); F04F 5/24 (2006.01); F04F 5/46 (2006.01)
CPC F04F 5/10 (2013.01) [F04F 5/04 (2013.01); F04F 5/24 (2013.01); F04F 5/466 (2013.01); F04F 5/20 (2013.01); F04F 5/463 (2013.01)] 17 Claims
OG exemplary drawing
 
1. An ejector device comprising:
a housing having a motive fluid inlet to receive motive fluid, a suction fluid inlet to receive suction fluid and a fluid outlet to output the motive fluid and the suction fluid, wherein the housing comprises a first housing member releasably coupled to a second housing member, wherein the first housing member comprises a first end portion and an opposing second end portion with a chamber therebetween, wherein the motive fluid inlet is positioned at the first end portion of the first housing member; and
a plurality of nozzle and diffuser assemblies configured to fit within the chamber of the housing, wherein each of the nozzle and diffuser assemblies comprises:
a nozzle;
a diffuser; and
a connecting structure connecting the nozzle to the diffuser, the connecting structure configured to permit fluid flow between the nozzle and the diffuser, the connecting structure having apertures configured to allow the suction fluid to be drawn into the fluid flow between the nozzle and the diffuser,
wherein the first housing member comprises a first supporting wall and a second supporting wall, wherein each of the first supporting wall and the second supporting wall extends radially across the chamber, the first supporting wall and the second supporting wall axially spaced apart along the first housing member, each of the first supporting wall and the second supporting wall having a plurality of bores configured to receive the plurality of the nozzle and diffuser assemblies, wherein an upstream end of each one of the plurality of nozzle and diffuser assemblies is located within a respective one bore of the plurality of bores in the first supporting wall with an axial space upstream of the upstream end and configured to allow for thermal expansion of the nozzle and diffuser assemblies into the axial space, wherein the second supporting wall comprises a projection that extends radially outward from the chamber and defines an external flange of the second end portion of the first housing member, and wherein the nozzle and diffuser assemblies are individually slidably removable from the second end portion of the first housing member when the second housing member is detached therefrom.