Rotary positive displacement device

A device to convert energy by displacing fluid, the device comprising:

• an outer rotor adapted to rotate about a first axis of rotation and comprising:
• a plurality of fins each comprising a first surface and a second surface that partially define a chamber region interposed thereinbetween where a first fin and a second fin are members of the said plurality of fins and are adjacent to each other, and
• a first reference radius extends through the first fin and a second reference radius extends through the second fin, a first surface of the said first fin is a first defined distance from the said first reference radius with respects to the radial location along the said first reference radius, and a second surface of the said second fin is a second defined distance from the said second reference radius with respects to the radial location along the said second reference radius, and
• the number of the chambers indicated by variable X,
• an outer reference dimension circle that is concentric with the said first axis of rotation of the said outer rotor and the outer reference dimension circle having a radius ro;
• an inner rotor adapted to rotate about a second axis of rotation and the inner rotor comprising an inner reference circle that is concentric with the second axis of rotation and the inner reference circle intersecting the outer reference circle of the said outer rotor at an intersect point where the velocity of the inner rotor and outer rotor are the same at the said intersect points, the inner reference circle having a radius ri, the inner rotor further comprising a plurality of legs the number of said legs for each inner rotor is indicated by variable where a first leg that is a member of said legs comprises a foot region the foot region comprising;
• a heel region comprising a first reference point that is adapted to rotate with the inner reference circle where said first reference point is non constant perpendicular distance from the said first reference radius of the outer reference circle with respects to rotation of the inner and the outer rotor, and the heel region further comprising a first engagement surface that is a first defined distance from the said first point where the said first defined distance of the heel region and the first defined distance of the first surface of the said first fin are collinear and their sum is non constant with respects to rotation of the inner rotor and the outer rotor,
• a toe region comprising a second reference point that is positioned on said inner reference dimension circle, a second engagement surface that is a second defined distance from the reference point where the second defined distance of the toe region and the second defined distance of the second surface of the second fin are collinear and their sum is non constant with respects to rotation of the inner rotor and outer rotor,
• a casing having an inner chamber region that is adapted to house said outer rotor and allow the outer rotor to rotate therein, the casing comprising;
• a fluid entrance system comprising a duct to communicate with the chamber region of the said outer rotor,
• an interior cavity adapted to house the said inner rotors and allow the inner rotors to rotate therein,
• whereas the said variables , , ri, ro are constrained by the equation /=ri/ro, the foot region of the said first leg is adapted to engage the chamber region where the first engagement surface of said heel region engages the said first surface of a first fin and the said second engagement surface of the said toe region of the said first foot is adapted to engage the second surface of a second fin to form a sealed operating chamber where rotation of the said first rotor and the said rotor causes displacement of fluid in the sealed operating chamber.

A device to convert energy by displacing fluid, the device comprising:

• an outer rotor adapted to rotate about a first axis of rotation and comprising a plurality of fins each comprising a first surface and a second surface that partially define a chamber region interposed thereinbetween where a first fin and a second fin are members of the said plurality of fins and are adjacent to each other, and a first reference radius extends through the first fin and a second reference radius extends through the second fin, a first surface of the said first fin and a second surface of the said second fin, and the number of the chambers indicated by variable , the outer rotor further comprising an outer reference dimension circle that is concentric with the said first axis of rotation of the said outer rotor and the outer reference dimension circle having a radius ro;
• a plurality of inner rotors adapted to rotate about a set of second axes of rotation where each inner rotor comprises an inner reference circle that is concentric with the second axis of rotation of the inner rotor and intersecting the outer reference circle of the said outer rotor at an intersect point where the velocity of the inner rotor and outer rotor are the same at the said intersect point, the inner reference circle having a radius ri, the inner rotors further each comprise a plurality of legs the number of said legs is indicated by variable where a first leg that is a member of said legs comprises a foot region the foot region comprising;
• a radially outward surface;
• a heel region comprising a first reference point that is adapted to rotate with the inner reference circle where said first reference point is non constant perpendicular distance from the said first reference radius of the outer reference circle with respects to rotation of the inner and the outer rotor, and the heel region further comprising a first engagement surface adapted to engage the first surface of the said first fin,
• a toe region comprising a second reference point that is positioned on said inner reference dimension circle, a second engagement surface that is adapted to engage the second surface of the second fin,
• a casing having an inner chamber region that is adapted to house said outer rotor and allow the outer rotor to rotate therein, the casing comprising;
• a fluid entrance system comprising a duct to communicate with the chamber region of the said outer rotor,
• an interior cavity adapted to house the said inner rotor,
• whereas the said variables , , ri, ro are constrained by the equation /=ri/ro, the foot region of the said first leg is adapted to engage the chamber region where the first engagement surface of said heel region engages the said first surface of a first fin and the said second engagement surface of the said toe region of the said first foot is adapted to engage the second surface of a second fin to form a sealed operating chamber where rotation of the said first rotor and the said rotor causes displacement of fluid in the sealed operating chamber a finite range of rotation.

A device to convert energy by displacing fluid, the device comprising:

• an inner rotor adapted to rotate about a second axis of rotation where the inner rotor comprises an inner reference circle that is concentric with the second axis of rotation of the inner rotor the inner reference circle having a radius ri, the inner rotor further comprise a plurality of legs where a first leg that is a member of said legs comprises a foot region the foot region comprising;
• a radially outward surface;
• a heel region comprising a first reference point that is positioned on a distance defined as Rip_h from the second axis at a rotational position θh and the heel region further comprising a first engagement surface that is an arc distance r_h from the said first reference point,
• a toe region comprising a second reference point that is positioned a distance defined as Rip_t from the said second axis at a rotational position θt, a second engagement surface that is a radius distance r_t from the said second reference point,
• an outer rotor adapted to rotate about a first axis of rotation and comprising an outer reference dimension circle that is concentric with the said first axis of rotation of the said outer rotor and the outer reference dimension circle having a radius ro and the outer rotor comprising;
• a first and second fin each comprising a first reference radius at a rotational location θo that extends through the first fin, a first surface of the said first fin a distance defined by gap_h from the said first engagement surface and having orthogonal coordinates Xf_h, Yf_h from an origin point located on said first reference radius where Xf_h and Yf_h are defined by
• Xf—h:=(sin(θh)Rip—h−sin(θo)Ro)cos(θo) +(−cos(θh)Rip—h−ro+ri+cos(θo)Ro)sin(θo)−r—h−gap—hYf—h:=(−cos(θh)Rip—h−ro+ri+cos(θo)Ro)cos(θo) −(sin(θh)Rip—h−sin(θo)Ro)sin(θo)
• a second surface defined by orthogonal coordinates Xf_t and Yf_t from said origin where the distance between the said second surface and the second engagement surface is defined by distance, gap_t where the values Xf_t and Yf_t are defined by
• Xf—t:=(sin(θt)Rip—t−sin(θo)Ro)cos(θo) +(−cos(θt)Rip—t−ro+ri+cos(θo)Ro)sin(θo)+r—t+gap—tYf—t:=(−cos(θt)Rip—t−ro+ri+cos(θo)Ro)cos(θo) −(sin(θt)Rip—t−sin(θo)Ro)sin(θo)
• a casing having an inner chamber region that is adapted to house said outer rotor and allow the outer rotor to rotate therein, the casing comprising;
• a fluid entrance system comprising a duct to communicate with the chamber region of the said outer rotor,
• an interior cavity adapted to house the said inner rotor,
• whereas the θo changes at a ratio of ri/ro of the θi value and the foot region of the said first leg is adapted to engage the chamber region defined between the said first and second fin where the first engagement surface of said heel region is adapted to engage the said first surface of the first fin and the said second engagement surface of the said toe region of the said first foot is adapted to engage the second surface of the second fin to form a sealed operating chamber where rotation of the said first rotor and the said rotor causes displacement of fluid in the sealed operating chamber a finite range of rotation.