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US 11,491,450 B2Granted
Cavitation reactor
AssigneeThree Es S.r.l.
InventorMarco Soldo
Life of this patent
Estimating the term…
Abstract
A cavitation reactor that may be obtained from a centrifugal pump is described. The reactor comprises a stator and a rotor having at least one centrifugal stage accommodated in a chamber of the stator. Two walls of the centrifugal stage define a gap therebetween, which is divided into compartments in fluid communication with the chamber of the stator at the peripheral portion of the centrifugal stage. The wall of the centrifugal stage that is next to the inlet opening of the chamber of the stator is closed at the central portion of the centrifugal stage, to thereby prevent the flow of fluid from the inlet opening to the peripheral portion of the centrifugal stage through the gap.
Claims12
A cavitation reactor, comprising:
- a stator, delimiting a chamber, the stator having a first and a second opening for a fluid to be introduced into and ejected from the chamber, and
- a rotor comprising a drive shaft, connected to the stator and rotatable relative to the stator about a rotation axis which extends in a longitudinal direction, the rotor comprising a centrifugal stage fixed to the drive shaft and housed in the chamber of the stator, the first opening of the stator having a lead-in portion facing the centrifugal stage in the longitudinal direction and shaped to longitudinally guide the flow of fluid,
- wherein:
- the centrifugal stage comprises a first wall proximal to the first opening of the stator and a second wall distal from the first opening of the stator, the first and second walls being arranged transverse to the longitudinal direction, and being spaced apart in the longitudinal direction to define a gap therebetween, wherein each of the first and second walls has an inner surface, the inner surfaces of the first and second walls facing each other and facing the gap, the gap being delimited in the longitudinal direction by the inner surfaces of the first and second walls, the gap being a recess formed in the centrifugal stage between the first and the second wall,
- the centrifugal stage comprises a plurality of partitions in the gap which are circumferentially spaced apart about the rotation axis, the partitions dividing the gap into a plurality of compartments which extend between a central portion of the centrifugal stage, closer to the rotation axis, and a peripheral portion of the centrifugal stage, farther from the rotation axis, the compartments being in fluid communication with the chamber of the stator at the peripheral portion of the centrifugal stage,
- the first wall is closed at the central portion of the centrifugal stage thereby preventing the flow of fluid between the first opening of the stator and the peripheral portion of the centrifugal stage through the compartments of the gap.
3 more elements
A method of manufacturing a cavitation reactor, including the steps of:
- providing a centrifugal pump comprising:
- a stator, delimiting a chamber, the stator having a first opening for a fluid to be introduced into the chamber and a second opening for the fluid to be ejected from the chamber, and
- a rotor comprising a drive shaft, connected to the stator and rotatable relative to the stator about a rotation axis which extends in a longitudinal direction, the rotor comprising a centrifugal stage fixed to the drive shaft and housed in the chamber of the stator, the first opening of the stator having a lead-in portion facing the centrifugal stage in the longitudinal direction and shaped to longitudinally guide the flow of fluid,
- wherein:
- the centrifugal stage comprises a first wall and a second wall, arranged transverse to the longitudinal direction and spaced apart in the longitudinal direction to define a gap therebetween, wherein each of the first and second walls has an inner surface, the inner surfaces of the first and second walls facing each other and facing the gap, the gap being delimited in the longitudinal direction by the inner surfaces of the first and second walls, the gap being a recess formed in the centrifugal stage between the first and the second wall, the first wall being placed between the second wall and the first opening of the stator,
- the centrifugal stage comprises a plurality of partitions in the gap which are circumferentially spaced apart about the rotation axis, the partitions dividing the gap into a plurality of compartments which extend between a central portion of the centrifugal stage, closer to the rotation axis, and a peripheral portion of the centrifugal stage, farther from the rotation axis, the compartments being in fluid communication with the chamber of the stator at the peripheral portion of the centrifugal stage,
- the first wall of the centrifugal stage has a central opening at the central portion of the centrifugal stage, and
- fixing a closure member to the first wall to close the central opening.
5 more elements
Dependencies are inferred from the claim text.