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US 2019/0195222 A1Published application
Rotary drive
AssigneeMonashee Pumps Inc.
InventorBraden Murphy
Life of this patent
Estimating the term…
Abstract
A rotary drive includes a housing; a shaft rotatably mounted within the housing and rotatable about a drive axis; a passage internal the housing and extending circumferentially about the shaft; a stator vane within the passage; and a rotor vane within the passage. The stator and rotor vanes are movable between respective closed positions in which the stator and rotor vanes separate the passage into a circumferentially expanding chamber in fluid communication with an inlet in the housing and a circumferentially collapsing chamber in fluid communication with an outlet in the housing, and respective open positions in which the rotor vane is movable circumferentially past the stator vane during rotation of the shaft.
Claims23
A rotary drive comprising:
- a) a housing having a cylindrical casing extending along a drive axis between axially spaced apart first and second end caps;
- b) a shaft rotatably mounted within the housing and rotatable relative to the casing about the drive axis;
- c) an annular passage radially intermediate the shaft and the casing and bounded axially by the end caps;
- d) at least one stator vane extending axially across the passage, the at least one stator vane pivotable about a stator vane axis fixed relative to the casing between a stator vane closed position for inhibiting circumferential fluid flow in the passage across the stator vane, and a stator vane open position;
- e) at least one rotor vane extending axially across the passage, the at least one rotor vane pivotable about a rotor vane axis fixed relative to the shaft between a rotor vane closed position for inhibiting circumferential fluid flow in the passage across the rotor vane, and a rotor vane open position,
- f) wherein when in the closed positions, the stator and rotor vanes separate the passage into at least one circumferentially expanding chamber and at least one circumferentially collapsing chamber spaced circumferentially apart from the at least one expanding chamber, the at least one expanding chamber in fluid communication with at least one inlet in the housing for receiving fluid in the at least one expanding chamber, and the at least one collapsing chamber in fluid communication with at least one outlet in the housing for evacuating fluid from the at least one collapsing chamber, and
- g) wherein when the rotor and stator vanes are in the open positions, the at least one rotor vane is movable circumferentially past the at least one stator vane during rotation of the shaft.
4 more elements
The rotary drive of clam 1, wherein the first end cap includes a first stator disc fixed relative to the casing and the second end cap includes a second stator disc fixed relative to the casing, and wherein the at least one stator vane extends axially between a first end pivotally supported by the first stator disc and a second end pivotally supported by the second stator disc.
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A rotary drive comprising:
- a) a housing;
- b) a shaft rotatably mounted within the housing and rotatable about a drive axis;
- c) a fluid passage internal the housing and extending circumferentially about the shaft;
- d) at least one stator vane within the passage, the at least one stator vane movable between a stator vane open position and a stator vane closed position, and when in the stator vane closed position, the at least one stator vane presents a stator vane high-pressure face extending radially across the passage and a circumferentially opposite stator vane low-pressure face extending radially across the passage, and
- e) at least one rotor vane within the passage and fixed to rotate with the shaft relative to the at least one stator vane, the at least one rotor vane movable between a rotor vane open position and a rotor vane closed position, and when in the rotor vane closed position, the at least one rotor vane presents a rotor vane high-pressure face extending radially across the passage and a circumferentially opposite rotor vane low-pressure face extending radially across the passage;
- f) wherein when in respective closed positions, the rotor and stator vanes separate the passage into at least one high pressure chamber bounded circumferentially by the stator vane and rotor vane high-pressure faces, and at least one low pressure chamber bounded circumferentially by the stator vane and rotor vane low-pressure faces, the at least one high pressure chamber in fluid communication with at least one first flow port in the housing, the first flow port being one of an inlet and an outlet, and the at least one low pressure chamber in fluid communication with at least one second flow port in the housing, the second flow port being the other one of the inlet and the outlet;
- and
- g) wherein when in respective open positions, the stator vane and the rotor vane are retracted relative to one another for permitting the rotor vane to move circumferentially past the stator vane during rotation of the shaft.
5 more elements
A rotary drive comprising:
- a) a housing;
- b) a shaft rotatably mounted within the housing and rotatable about a drive axis;
- c) a passage internal the housing and extending circumferentially about the shaft;
- d) at least one stator closure member within the passage and movable between a stator closure member closed position, in which circumferential fluid flow in the passage across the stator closure member in a circumferential first direction is blocked, and a stator closure member open position;
- e) at least one rotor closure member within the passage and fixed to rotate with the shaft relative to the stator closure member, the at least one rotor closure member movable between a rotor closure member closed position, in which circumferential fluid flow in the passage across the at least one rotor closure member in a second circumferential direction opposite the first direction is blocked, and a rotor closure member open position;
- f) wherein when in respective closed positions, the stator and rotor closure members separate the passage into at least one circumferentially expanding chamber in fluid communication with at least one fluid inlet in the housing for conducting fluid into the at least one expanding chamber during rotation of the shaft in a power direction, and at least one circumferentially collapsing chamber in fluid communication with at least one outlet in the housing for evacuating fluid from the at least one collapsing chamber during rotation of the shaft in a power direction;
- and
- g) wherein when in respective open positions, the at least one rotor closure member is movable circumferentially past the at least one stator closure member during rotation of the shaft in the power direction.
5 more elements
Dependencies are inferred from the claim text.