Fluid stream pulse damper

• US 6,390,132 B1
• Filed: 12/07/2000
• Issued: 05/21/2002
• Est. Priority Date: 12/07/2000
• Status: Expired due to Fees

• Current Assignee: Caterpillar Incorporated
• Original Assignee: Caterpillar Incorporated
• Inventors: Knox, Kevin J., Johnson, Joel S.
• Primary Examiner(s): Hook, James
• Application Number:
  US09/731,634
• Publication Number:
  US 20020069922A1
• Time in Patent Office: 530 Days
• Field of Search: 138/43, 138/30, 138/39, 138/46
• US Class Current: 138/30
• CPC Class Codes: F16L 55/02718 placed transversely
• CPC Class Codes: F16L 55/0332 by inserting a body of compressible material in the pipe

Abstract

A fluid stream pulse damper having a fluid conduit defining a fluid path and a fluid flow direction. The conduit has an inlet end and an outlet end. A damper body in the conduit intersects the fluid path. An energy absorber attached to the damper body operates in resistance to fluid flowing in the conduit.

Claims

1. A fluid stream pulse damper, comprising;

a fluid conduit defining a fluid path and a fluid flow direction in said fluid path, said conduit having an inlet end and an outlet end for all fluid flowing along said fluid path;

said conduit including an expansion chamber and an inlet and an outlet for said expansion chamber;

a damper body disposed in said expansion chamber opposite said expansion chamber inlet, said expansion chamber outlet being opposite said damper body in said expansion chamber, said expansion chamber inlet and outlet being on the same side of said damper body, said damper body intersecting said fluid path; and

an energy absorber attached to said expansion chamber, and operating in resistance to fluid flowing in said fluid flow direction, said energy absorber adopted for allowing movement of said damper body to absorb energy in said fluid flowing in said conduit without decreasing said fluid path.

2. The damper of claim 1, said damper body being a solid plate.

3. The damper of claim 1, including a partition in said chamber between said expansion chamber inlet and said expansion chamber outlet.

4. A gaseous fluid circuit, comprising;

a source of gaseous fluid;

a gaseous fluid destination;

a fluid conduit defining a fluid path from said source to said destination, and having a fluid flow direction in said fluid path, said conduit having an inlet end and an outlet end for all fluid flowing along said fluid path;

said conduit including an expansion chamber and an inlet and an outlet for said expansion chamber;

a damper body disposed in said expansion chamber opposite said expansion chamber inlet, said damper body intersecting said fluid path, said expansion chamber outlet being opposite said damper body in said expansion chamber, said expansion chamber inlet and outlet being on the same side of said damper body; and

an energy absorber attached to said damper body and operating in resistance to fluid flowing in said fluid flow direction, said energy absorber adapted to absorb energy from the gaseous fluid without increasing restriction in the fluid path.

5. The gaseous fluid circuit of claim 4, said source being an internal combustion engine.

6. The gaseous fluid circuit of claim 4, said destination being an internal combustion engine.

7. The gaseous fluid circuit of claim 4, said damper body being a solid plate.

8. The gaseous fluid circuit of claim 4, including a partition in said chamber between said expansion chamber inlet and said expansion chamber outlet.