Device for cleaning subsea surfaces such as ship hulls
First Claim
1. Device for cleaning of underwater surfaces, comprising:
- a rotary disc member which is constructed and arranged to rotate in a rotational plane and having a rotational axis, the rotary member equipped with a plurality of nozzles for discharging liquid under pressure against the surfaces to be cleaned, said nozzles being arranged along a circular line on a surface of the rotary disc member and being attached to the rotary member obliquely in relation to the rotational axis, such that water jets being discharged from the nozzles will have a velocity component vn that is perpendicular to the rotational plane of the rotary member and a velocity component vp that is parallel to the rotational plane of the rotary member;
a hollow spindle concentric with the rotational axis for connection to a source of liquid under pressure to be supplied to said nozzles; and
a separate propulsion device for setting the rotary disc member in rotation;
wherein arbitrary radial sections of the rotary disc member are substantially equal in shape and size,wherein the velocity component vp that is parallel to the rotational plane is the sum of a velocity component vr that is radial in relation to the rotary disc member and a velocity component vt that is tangential in relation to the circular line along which the nozzles are arranged, andwherein the separate propulsion device causes rotation of the rotary disc member in a direction in relation to the inclination of the nozzles such that the tangential velocity component vt for the liquid being discharged from at least half of the nozzles has a direction which is the same as the direction of rotation of the rotary disc member.
1 Assignment
0 Petitions
Accused Products
Abstract
Device for cleaning of surfaces under water, such as ship hulls, includes a rotary disc furnished with nozzles for discharge of pressurized liquid against the surface to be cleaned. The nozzles are mounted obliquely in relation to the rotational axis of the rotary disc and are arranged to be supplied with pressurized liquid through a hollow spindle that is concentric with the rotational axis. The nozzles have an inclination that have an orientation involving that the velocity component (Vp) of the liquid jet from each nozzle that is not perpendicular to the surface to be cleaned, has a tangential velocity component (Vt) that has the same direction as the direction of rotation (R) of the rotary disc and optionally a radial velocity component that is positive, i.e. that is directed outwards in relation to the center of the disc.
17 Citations
16 Claims
-
1. Device for cleaning of underwater surfaces, comprising:
-
a rotary disc member which is constructed and arranged to rotate in a rotational plane and having a rotational axis, the rotary member equipped with a plurality of nozzles for discharging liquid under pressure against the surfaces to be cleaned, said nozzles being arranged along a circular line on a surface of the rotary disc member and being attached to the rotary member obliquely in relation to the rotational axis, such that water jets being discharged from the nozzles will have a velocity component vn that is perpendicular to the rotational plane of the rotary member and a velocity component vp that is parallel to the rotational plane of the rotary member; a hollow spindle concentric with the rotational axis for connection to a source of liquid under pressure to be supplied to said nozzles; and a separate propulsion device for setting the rotary disc member in rotation; wherein arbitrary radial sections of the rotary disc member are substantially equal in shape and size, wherein the velocity component vp that is parallel to the rotational plane is the sum of a velocity component vr that is radial in relation to the rotary disc member and a velocity component vt that is tangential in relation to the circular line along which the nozzles are arranged, and wherein the separate propulsion device causes rotation of the rotary disc member in a direction in relation to the inclination of the nozzles such that the tangential velocity component vt for the liquid being discharged from at least half of the nozzles has a direction which is the same as the direction of rotation of the rotary disc member. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
-
Specification