A boundary layer turbomachine (100) can include a housing (110) defining an interior space (115) and having an inlet opening (112) and an outlet (113) opening to facilitate movement of a fluid through the housing (110). The boundary layer turbomachine (100) can also include a rotor assembly (120) disposed in the rotor chamber (117) and configured to rotate about an axis of rotation (101). The rotor assembly (120) can have a plurality of disks (121) spaced apart along the axis of rotation (101) and defining an interior opening along the axis of rotation (101). The fluid can pass through gaps between the disks (121) and the interior opening as the fluid moves through the housing (110). Corresponding rotor assembly and partition are also provided.

A boundary layer turbomachine (100) can include a housing (110) defining an interior space (115) and having an inlet opening (112) and an outlet (113) opening to facilitate movement of a fluid through the housing (110). The boundary layer turbomachine (100) can also include a rotor assembly (120) disposed in the rotor chamber (117) and configured to rotate about an axis of rotation (101). The rotor assembly (120) can have a plurality of disks (121) spaced apart along the axis of rotation (101) and defining an interior opening along the axis of rotation (101). The fluid can pass through gaps between the disks (121) and the interior opening as the fluid moves through the housing (110). Corresponding rotor assembly and partition are also provided.

The present invention relates to a disc turbine for converting the energy associated with a fluid into mechanical energy. The turbine (1) comprises a housing and a rotor (4) inside said housing (3) which can rotate with respect to it about a rotation axis (100). The rotor (4) comprises a plurality of disc elements (11A, 11B) coaxial with said axis. The turbine is characterized in that it comprises a distributor (5) with a distribution wall (5A) which at least partially surrounds the discs. Such a wall (5A) is arranged inside said housing (3) so as to define a diffusion chamber (7) with the housing itself, which chamber at least partially surrounds the distribution wall (5A). The latter comprises a plurality of nozzles (6A, 6B, 6C, 66A, 66B, 66C), each of which is provided with an inlet section (61) communicating with said chamber (7), an outlet section (62) adjacent to the discs (11A, 11B), and a converging portion (615) which accelerates said fluid towards said outlet section (62).

The present invention relates to a disc turbine for converting the energy associated with a fluid into mechanical energy. The turbine (1) comprises a housing and a rotor (4) inside said housing (3) which can rotate with respect to it about a rotation axis (100). The rotor (4) comprises a plurality of disc elements (11A, 11B) coaxial with said axis. The turbine is characterized in that it comprises a distributor (5) with a distribution wall (5A) which at least partially surrounds the discs. Such a wall (5A) is arranged inside said housing (3) so as to define a diffusion chamber (7) with the housing itself, which chamber at least partially surrounds the distribution wall (5A). The latter comprises a plurality of nozzles (6A, 6B, 6C, 66A, 66B, 66C), each of which is provided with an inlet section (61) communicating with said chamber (7), an outlet section (62) adjacent to the discs (11A, 11B), and a converging portion (615) which accelerates said fluid towards said outlet section (62).

The present invention relates in general to the field of fluid reaction surfaces, and more specifically, to a fluid-foil impeller and method of use. One aspect of the fluid-foil impeller utilizes a plurality of fluid-foil discs that may be of uniform and/or variable thickness and configured to rotate rapidly in series to produce propulsion. Each fluid-foil disc comprises a leading edge, a trailing edge, a chord and a fixed pitch. The fluid-foil impeller may further include a standard or Venturi shroud that is designed to encompass the plurality of fluid-foil discs. The plurality of fluid-foil discs are configured to act in cooperation with the shroud to reduce losses incurred from turbulence and the conversion of mechanical work to fluid movement. Fluid may be acted upon by the plurality of fluid-foil discs and/or shroud, singly or in an array. A purpose of the invention is to provide a fluid-foil impeller and method of use that reduces harmful cavitation effects typically encountered by traditional propeller blades when operating at high revolutions per minute. An additional purpose of the invention is to provide a fluid-foil impeller that may be used efficiently and safely in a variety of industrial applications that requires successful propulsion a fluid.

A shear flow turbomachinery device includes a housing having housing walls defining a cavity, a shaft extending into the cavity though a shaft opening in the housing wall at an end of the cavity, a rotor coupled to the shaft within the cavity, the rotor having a plurality of disks extending radially outward from a central axis of the rotor, the disks having a spaced arrangement forming a gap between adjacent disks, and a shroud for shrouding the rotor, the shroud including a pair of end disks coupled to opposing ends of the rotor, a screen extending between outer edges of the pair of end disks, the screen extending around the rotor between the rotor and the housing walls, wherein the shroud is freely rotatable independent of rotation of the rotor to reduce drag on the disks due to the housing walls when the cavity if filled with fluid and the shaft and plurality of disks are rotated.

A shear flow turbomachinery device includes a housing having housing walls defining a cavity, a shaft extending into the cavity though a shaft opening in the housing wall at an end of the cavity, a rotor coupled to the shaft within the cavity, the rotor having a plurality of disks extending radially outward from a central axis of the rotor, the disks having a spaced arrangement forming a gap between adjacent disks, and a shroud for shrouding the rotor, the shroud including a pair of end disks coupled to opposing ends of the rotor, a screen extending between outer edges of the pair of end disks, the screen extending around the rotor between the rotor and the housing walls, wherein the shroud is freely rotatable independent of rotation of the rotor to reduce drag on the disks due to the housing walls when the cavity if filled with fluid and the shaft and plurality of disks are rotated.

A boundary layer turbine having a housing with an inlet that receives pressurized fluid, a rotatable shaft extending through the housing, nested cylindrical tubes of progressively wider diameter connected coaxially about the shaft wherein adjacent tubes define a cylindrical fluid passageway there-between that is in fluid communication with the inlet and an outlet, and at least one nozzle coupled to the inlet configured to direct the flow of fluid from the inlet into the plurality of passageways and against the plurality of tubes at an angle to a normal plane to the curvature of the plurality of tubes and at an angle to the longitudinal axis of the shaft, wherein the angled flow of fluid imparts rotation to the plurality of tubes and the shaft and flows towards the outlet where the fluid is discharged, and wherein the rotating shaft may be used to provide kinetic energy.

A boundary layer turbine having a housing with an inlet that receives pressurized fluid, a rotatable shaft extending through the housing, nested cylindrical tubes of progressively wider diameter connected coaxially about the shaft wherein adjacent tubes define a cylindrical fluid passageway there-between that is in fluid communication with the inlet and an outlet, and at least one nozzle coupled to the inlet configured to direct the flow of fluid from the inlet into the plurality of passageways and against the plurality of tubes at an angle to a normal plane to the curvature of the plurality of tubes and at an angle to the longitudinal axis of the shaft, wherein the angled flow of fluid imparts rotation to the plurality of tubes and the shaft and flows towards the outlet where the fluid is discharged, and wherein the rotating shaft may be used to provide kinetic energy.

This blower apparatus includes an air blowing portion including a plurality of flat plates; a motor portion; and a housing. The housing includes an air inlet and an air outlet. At least one of the flat plates includes an inner annular portion, an outer annular portion arranged radially outside of the inner annular portion, ribs each of which is arranged to join the inner and outer annular portions to each other, and air holes each of which is surrounded by the inner and outer annular portions and circumferentially adjacent ones of the ribs. With the inner annular portion and the outer annular portion being joined to each other through the ribs, an increase in the opening area of each air hole, which is defined between the inner and outer annular portions, can be achieved. This leads to improved air intake efficiency, resulting in improved air blowing efficiency.