초록 ▼

A check valve is provided that includes a valve housing that has a side wall and a flow path therethrough, the side wall defining the flow path. The flow path includes an inlet, an outlet, and a centerline extending between the inlet and the outlet. At least one control member is positioned in the

A check valve is provided that includes a valve housing that has a side wall and a flow path therethrough, the side wall defining the flow path. The flow path includes an inlet, an outlet, and a centerline extending between the inlet and the outlet. At least one control member is positioned in the flow path and movable between a first position, wherein fluid flow through the valve housing is substantially prohibited and a second position wherein fluid flow is permitted. The side wall includes a stop configured to limit movement of the at least one control member at a pre-determined stop angle relative to the flow path centerline.

대표청구항 ▼

What is claimed is: 1. A check valve comprising: a valve housing comprising a side wall and a flow path therethrough, said side wall defining said flow path, said flow path comprising an inlet, an outlet, and a centerline extending between said inlet and said outlet; and at least one control member

What is claimed is: 1. A check valve comprising: a valve housing comprising a side wall and a flow path therethrough, said side wall defining said flow path, said flow path comprising an inlet, an outlet, and a centerline extending between said inlet and said outlet; and at least one control member positioned in said flow path and movable between a first position, wherein fluid flow through said valve housing is substantially prohibited and a second position wherein fluid flow is permitted, said side wall comprising a conically flared portion that is radially outward from said at least one control member, said conically flared portion includes an inlet side and an outlet side and is divergent from said inlet side to said outlet side such that a cross sectional area of said flow path outlet is substantially equal to a cross sectional area of said flow path inlet. 2. A check valve in accordance with claim 1 wherein said side wall further comprises a stop comfigured to limit movement of said at least one control member relative to said flow path centerline. 3. A check valve in accordance with claim 1 wherein said conically flared portion of said side wall is oriented obliquely with respect to said centerline at an angle that is approximately seventy-three percent of a pre-determined stop angle relative to said flow path centerline. 4. A check valve in accordance with claim 1 further comprising a retaining pin coupled within said housing, said at least one control member rotatably coupled to said retaining pin. 5. A check valve in accordance with claim 4 wherein said at least one control member comprises a first control member and a second control member, said first and second control members rotatably coupled to said retaining pin, such that said first and second control members are independently rotatable with respect to each other. 6. A check valve in accordance with claim 4 wherein said retaining pin comprises first and second opposite ends, said first end comprising a flange and a stepped portion, said stepped portion sized to be received in an aperture formed in said valve housing, and wherein said flange and said stepped portion facilitate an alignment of said at least one control member. 7. A check valve in accordance with claim 1 wherein said housing further comprises a projection extending into said flow path between an inlet to said flow path and said at least one control member, said projection is configured to divert fluid flow towards said at least one control member. 8. A check valve in accordance with claim 1 wherein said housing further comprises a static pressure sensing port. 9. A check valve in accordance with claim 1 wherein said at least one control member is tapered from a first thickness at a central portion thereof to a second thickness at an outer periphery, wherein said first thickness is greater than said second thickness. 10. A gas turbine engine bleed air supply system comprising: a bleed duct comprising first and second ends, said first end is coupled to at least one compressor bleed port; and a check valve coupled to said second end of said bleed duct, said check valve configured to permit fluid flow from said bleed duct while substantially preventing fluid flow into said bleed duct, said check valve comprising: a valve housing comprising a side wall and a flow path therethrough, said side wall defining said flow path, said flow path comprising an inlet, an outlet, and a centerline extending between said inlet and said outlet, a cross sectional area of said flow path outlet is substantially equal to a cross sectional area of said flow path inlet; and at least one control member positioned in said flow path and movable between a first position, wherein fluid flow through said valve housing is substantially prohibited and a second position wherein fluid flow is permitted, said side wall comprising a stop configured to limit movement of said at least one control member at a pre-determined stop angle relative to said flow path centerline. 11. A bleed air supply system in accordance with claim 10 wherein said side wall comprises a conically flared portion that is proximate to said at least one control member, said conically flared portion is configured such that that the cross sectional area of said flow path outlet is substantially equal to the cross sectional area of said flow path inlet. 12. A bleed air supply system in accordance with claim 11 wherein said conically flared portion of said side wall is oriented obliquely with respect to said centerline at an angle that is approximately seventy-three percent of said stop angle. 13. A bleed air supply system in accordance with claim 10 wherein said housing further comprises a static pressure sensing port. 14. A bleed air supply system in accordance with claim 10 further comprising a retaining pin coupled within said housing, said at least one control member rotatably coupled to said retaining pin. 15. A bleed air supply system in accordance with claim 14 wherein said retaining pin comprises first and second opposite ends, said first end comprising a flange and a stepped portion, said stepped portion sized to be received in an aperture formed in said valve housing, and wherein said flange and said stepped portion facilitate an alignment of said at least one control member.