Fluid flow control device
AssigneeControl Components, Inc.
InventorJoseph H Steinke
Life of this patent
Estimating the term…
Abstract
A fluid flow control device (10) has a stack of annular discs (15) defining a central passageway (14) and a plug (16) reciprocable in the passageway for controlling fluid flow. Adjacent discs (15) in the stack have at least one fluid passageway (21A) formed in a major face (22A) of one disc closed by the abutting major face of the adjacent disc. The fluid passageway (21A) extends in a clockwise direction and has a linear inlet portion (23A) and a curved outlet portion (24A). The inlet portion (23A) is of constant cross-sectional area and the outlet portion (24A) is of increasing cross-sectional are in the direction of fluid flow. Other configurations of discs and/or fluid passageways are disclosed.
Claims12
A fluid flow control device incorporating a stack (90;100) of annular discs (15;91;101), each disc (15;91;101) having an inner perimeter and an outer perimeter, the inner perimeter of each disc (15,91;101) defining a central aperture such that the annular discs (15;91;101) form a central passageway (14) extending longitudinally of the stack (90;100), adjacent discs (10A,10B;20A,20B;30A,30B;
- 40A,40B;50A,50B;60A,60B;70A,70B;80A,80B) having abutting major faces defining at least one fluid passageway (11A,11B;
- 21A,21B;31A,31B;41A,41B;51A,51B;61A,61B;71A,71B;81A,81B) extending between the inner and outer perimeters (18A,17A;
- 18B,17B;28A,27A;28B,27B;38A,37A;38B,37B;48A,47A;48B,47B;58A,5 7A;58B,57B;68A,67A;68B,67B;78A,77A;78B,77B;88A,87A;88B,87B) of the discs, and a control member (16) reciprocably movable within the central passageway (14) to control fluid flow through the device, characterised in that said at least one passageway (41A,41B;51A,51B;61A,61B;71A,71B;81A,81B) comprises a groove in at least one of the abutting major faces of adjacent discs (40A,40B;50A,50B;60A,60B;70A,70B;80A,80B) and has an inlet (43A,43B;53A,53B;63A,63B;73A,73B;83A,83B) commencing at one of said perimeters and an outlet (44A,44B;54A,54B;64A,64B;
- 74A,74B;84A,84B) at the other of said perimeters, the inlet (43A,43B;53A,53B;63A,63B;73A,73B;83A,83B) opening to a linear portion (45A,45B;55A,55B;65A,65B;75A,75B;85A,85B) of the passageway groove, the linear portion (45A,45B;55A,55B;
- 65A,65B;75A,75B;85A,85B) leading to a curved portion of the passageway groove, and the curved portion terminating at the outlet (44A,44A;54A,54B;64A,64B;74A,74B;84A,84B).
A flow control device according to any one of the preceding claims characterised in that the discs (50A,50B;60A,60B;70A,70B) are conical or dished.
A flow control device according to any one of the preceding claims characterised in that flow through the fluid passageway (41A,41B;51A,51B;61A,61B;71A,71B;81A,81B) between adjacent discs (40A,40B;50A,50B;60A,60B;70A,70B;80A,80B) is from the outer perimeters to the inner perimeters of the discs.
A flow control device according to any one of the preceding claims characterised in that a plurality of individual fluid passageways (41A,41B;61A,61B;71A,71B;81A,81B) are provided between outer and inner perimeters of at least one pair of adjacent discs (40A,40B;
- 60A,60B;70A,70B;80A,80B).
A flow control device according to any one of the preceding claims characterised in that, viewed in plan, the passageway(s) (41A,41B;51A,51B;61A,61B;71A,71B;81A,81B) between adjacent discs (40A,40B;50A,50B;60A,60B;70A,70B;80A,80B) extend in either a clockwise or a counter clockwise direction.
A flow control device according to any one of the preceding claims characterised in that the discs (40A,40B;50A,50B;60A,60B;70A,70B;
- 80A,80B) are made of tungsten carbide or ceramic material.
A flow control device according to any one of the preceding claims characterised in that the control member (16) comprises a plug (16) reciprocable within the central passageway (14) from a fully closed position through a range of partially open positions to a fully open position and vice versa under the control of all actuator.
Dependencies are inferred from the claim text.