SILENT VALVE

• US 3,631,891 A
• Filed: 02/26/1970
• Issued: 01/04/1972
• Est. Priority Date: 02/26/1970
• Status: Expired due to Term

• Current Assignee: Richard S. Brumm
• Original Assignee: Richard S. Brumm
• Inventors: Brumm, Richard S.
• Primary Examiner(s): Rosenthal, Arnold
• Application Number:
  US05/014,390
• Time in Patent Office: 677 Days
• Field of Search: 137/625.3,625.38,625.37 251/127 138/43
• US Class Current: 137/625.3
• CPC Class Codes: F16K 31/1266 one side of the diaphragm being acted upon by the circulating fluid
• CPC Class Codes: F16K 47/14 the throttling member being a perforated membrane
• CPC Class Codes: Y10T 137/86734 With metering feature
• CPC Class Codes: Y10T 137/86799 With internal flow passage

Abstract

A silent valve with tubular, axially operated valve closure plug. An outlet passage is radially outward of the closure plug, and intermediate it and the closure plug is a stacked series of flat annular discs, formed alternately of porous material and of imperforate material. The imperforate discs confine the flow through the porous discs primarily to radially outward directions. The inner surfaces of the porous discs are uncovered progressively as the closure plug moves toward open position.

Claims

1. In a valve structure comprising:

a body having an inlet port, an axially movable tubular valve closure member in said body, an outlet passageway in said body radially outward of said closure member and in spaced relationship thereto, the improvement comprising;

a relatively thick porous annular member in said body and embracing said valve closure member, an inner surface of said annular member being progressively uncovered by said valve closure member during opening movement thereof, a valve-operating stem movable in one direction to move said valve closure member into open position, resilient means biasing said valve closure member in the opposite direction, and an inlet flow passage displaced from said annular members in said one direction and opening into communication with the interior of said valve closure member.

2. The valve structure defined by claim 1 wherein said annular member comprises:

a plurality of thin flat annular members of porous material stacked in said body, a series of flat imperforate rings arranged alternately with said porous members for restricting flow through said annular members to radially outward directions, the inner edges of said flat rings being formed to slidably guide said closure member but to expose portions of the flat surfaces of said porous members along the adjacent edges thereof.

3. The valve structure defined by claim 2 wherein:

said inner edges of the imperforate members are chamfered.

4. The valve structure defined by claim 2 including means for compressing the stack of porous members and imperforate rings.