Cavitator for gas generation
View Patent ↗A cavitator to be used in a gas generator is provided. The cavitator is provided with a cavitator inlet and a cavitator outlet having one or several cavitator channels having a cavitator channel inlet and a cavitator channel outlet. The cavitator channel or channels are further provided with wave shaped channel walls, protrusions and widenings, surface irregularities such as cavitation generating indentations or a combination thereof for inducing a differentiated pressure within a liquid flowing through the cavitators. The cavitator further having an outer cavitator stator and an inner cavitator rotor arranged to rotate by a liquid flow through the cavitator. The rotation of the inner cavitator rotor will induce a differentiated pressure within the liquid in the cavitator promoting cavitation in the liquid flowing through the cavitator channels. A gas generator including such a cavitator as described herein is also provided.
1 . A cavitator to be used in a gas generator, the cavitator comprising an outer cavitator stator and an inner cavitator rotor, the inner cavitator rotor arranged to rotate relative to the outer cavitator stator, wherein said cavitator is provided with a cavitator inlet and a cavitator outlet, said cavitator further comprising cavity channels including an inner cavitator channel and an outer cavitator channel each running along an axis of rotation of the inner cavitator rotor and having a cavitator channel inlet and a cavitator channel outlet, said cavitator channels provided with cavitation inducing means for inducing a differentiated pressure within a liquid flowing through the cavitator, said cavitator being arranged to induce a rotation of the inner cavitator rotor by a liquid flow through the cavitator such that the rotation of the inner cavitator rotor will induce a differentiated pressure within the liquid in the cavitator promoting cavitation in the liquid flowing through the cavitator channels, wherein the inner cavitator channel is located closer to the axis of rotation of the inner cavitator rotor than the outer cavitator channel, the inner cavitator channel is formed between a first innermost wall and a second middle wall in the cavitator forming a first inner flow path for a fluid, the outer cavitator channel is formed between said second middle wall and a third outermost wall in the cavitator forming a second outer flow path for the fluid, and the first, first innermost wall and the second middle wall in the cavitator form part of the inner cavitator rotor while the third outermost wall in the cavitator forms part of the outer cavitator stator.
2 . The cavitator according to claim 1 wherein said cavitator channels are designed to be wave-, saw tooth- or curvilinear shaped.
3 . The cavitator according to claim 2 wherein the cavitator channels are designed to be shaped as sinusoidal curves.
4 . The cavitator according to claim 1 wherein there are capillary vanes between the inner cavitator channel and the outer cavitator channel.
5 . The cavitator according to claim 4 wherein the capillary vanes are designed to function as jets for causing a rotational movement of the inner cavitator rotor.
6 . The cavitator according to claim 4 wherein said capillary vanes comprise a capillary vane inlet and a capillary vane outlet which are designed such that the capillary vane inlet is narrower than the capillary vane outlet to create a change of the pressure within the fluid passing through the capillary vanes.
7 . The cavitator according to claim 6 wherein cavities are between the capillary vane inlet and the capillary vane outlet.
8 . The cavitator according to claim 4 wherein the inner cavitator channel is provided with a dead end causing the flow of liquid entering the inner cavitator channel inlet to pass through the capillary vanes from the inner cavitator channel to the outer cavitator channel.
9 . The cavitator according to claim 4 wherein said outer cavitator channel is designed to have a width adapted to provide a sufficient distance for the gas bubbles formed by cavitation of the fluid, when flowing from the inner cavitator channel via the capillary vanes to the outer cavitator channel, to collapse inside the fluid before the cavitation bubbles reaches the third, outermost wall in the cavitator.
10 . A gas generator for gasification of liquids, said gas generator comprising a main rotor body being rotatably mounted to a static support framework such that the main rotor body is arranged to rotate around a rotor body centre axle, said main rotor body comprising one or several main rotor body channels, provided with a rotor body channel inlet and a rotor body channel outlet, for guiding a flow of a liquid from said rotor body channel inlet being located at a distance R 1 in the radial direction from the rotor body centre axle towards said rotor body channel outlet being located at a distance R 2 in the radial direction from the rotor body centre axle, wherein R 2 >R 1 such that a liquid in the rotor body channel is forced from the rotor body channel inlet towards the rotor body channel outlet by centrifugal forces as the main rotor body rotates around the rotor body centre axle,
said main rotor body further comprising at least one cavitator, each cavitator comprising an outer cavitator stator and an inner cavitator rotor, said inner cavitator rotor arranged to rotate relative to said outer cavitator stator, each cavitator is provided with a cavitator inlet and a cavitator outlet, each cavitator further comprising cavitator channels including an inner cavitator channel and an outer cavitator channel each running along an axis of rotation of the inner cavitator rotor and having a cavitator channel inlet and a cavitator channel outlet, said cavitator channels provided with cavitation inducing means for inducing a differentiated pressure within a liquid flowing through the cavitator, said cavitator being arranged to induce a rotation of the inner cavitator rotor by a liquid flow through the cavitator such that the rotation of the inner cavitator rotor will induce a differentiated pressure within the liquid in the cavitator promoting cavitation in the liquid flowing through the cavitator channels, said cavitator channel inlet being connected to the rotor body channel outlet for guiding said liquid flow to the cavitator for cavitation of the liquid, wherein the inner cavitator channel is located closer to the axis of rotation of the inner cavitator rotor than the outer cavitator channel, the inner cavitator channel is formed between a first innermost wall and a second middle wall in the cavitator forming a first inner flow path for a fluid, the outer cavitator channel is formed between said second middle wall and a third outermost wall in the cavitator forming a second outer flow path for the fluid, and the first innermost wall and the second middle wall in the cavitator form part of the inner cavitator rotor while the third outermost wall in the cavitator forms part of the outer cavitator stator.
11 . The gas generator according to claim 10 wherein said main rotor body comprises at least two cavitators being located equidistant from each other and equidistant from the rotor body centre axle.
12 . The gas generator according to claim 10 wherein the main rotor body comprises a main rotor body casing defining a rotatable container having an interior main rotor body space to which a vaporized liquid is guided from the cavitators.
13 . The gas generator according to claim 10 wherein said main rotor body is comprised in an inner casing forming part of the static support framework, said inner casing being used as a pressure chamber.
14 . A gas generator for gasification of liquids, the gas generator comprising a main rotor body being rotatably mounted to a static support framework such that the main rotor body is arranged to rotate around a rotor body centre axle, the main rotor body comprising one or several main rotor body channels, provided with a rotor body channel inlet and a rotor body channel outlet, for guiding a flow of a liquid from the rotor body channel inlet being located at a distance R 1 in the radial direction from the rotor body centre axle towards the rotor body channel outlet being located at a distance R 2 in the radial direction from the rotor body centre axle, wherein R 2 >R 1 such that a liquid in the rotor body channel is forced from the rotor body channel inlet towards the rotor body channel outlet by centrifugal forces as the main rotor body rotates around the rotor body centre axle,
the main rotor body further comprising at least one cavitator, each cavitator comprising an outer cavitator stator and an inner cavitator rotor, the inner cavitator rotor arranged to rotate relative to the outer cavitator stator, each cavitator is provided with a cavitator inlet and a cavitator outlet, each cavitator further comprising cavitator channels including an inner cavitator channel and an outer cavitator channel each having a cavitator channel inlet and a cavitator channel outlet, the cavitator channels provided with cavitation inducing means for inducing a differentiated pressure within a liquid flowing through the cavitator, the cavitator being arranged to induce a rotation of the inner cavitator rotor by a liquid flow through the cavitator such that the rotation of the inner cavitator rotor will induce a differentiated pressure within the liquid in the cavitator promoting cavitation in the liquid flowing through the cavitator channels, the cavitator channel inlet being connected to the rotor body channel outlet for guiding the liquid flow to the cavitator for cavitation of the liquid, wherein the inner cavitator channel is formed between a first innermost wall and a second middle wall in the cavitator forming a first inner flow path for a fluid, and the outer cavitator channel is formed between the second middle wall and a third outermost wall in the cavitator forming a second outer flow path for the fluid.
15 . The gas generator according to claim 14 wherein the cavitator channels are designed to be wave-, saw tooth- or curvilinear shaped.
16 . The gas generator according to claim 15 wherein the cavitator channels are designed to be shaped as sinusoidal curves.
17 . The gas generator according to claim 14 wherein there are capillary vanes between the inner cavitator channel and the outer cavitator channel.
18 . The gas generator according to claim 17 wherein the capillary vanes comprise a capillary vane inlet and a capillary vane outlet which are designed such that the capillary vane inlet is narrower than the capillary vane outlet to create a change of the pressure within the fluid passing through the capillary vanes.
19 . The gas generator according to claim 17 wherein the inner cavitator channel is provided with a dead end causing the flow of liquid entering the inner cavitator channel inlet to pass through the capillary vanes from the inner cavitator channel to the outer cavitator channel.