Spring-loaded oil overflow valve for diaphragm compressors

• US 6,851,449 B2
• Filed: 05/07/2003
• Issued: 02/08/2005
• Est. Priority Date: 05/11/2002
• Status: Expired due to Fees

• Current Assignee: Horst Kleibrink
• Original Assignee: Horst Kleibrink
• Inventors: Kleibrink, Horst
• Primary Examiner(s): Krishnamurthy, Ramesh
• Application Number:
  US10/431,209
• Publication Number:
  US 20030209273A1
• Time in Patent Office: 643 Days
• Field of Search: 137/539.5, 251/118, 417/383, 417/395, 605/92, 92/86
• US Class Current: 137/539.5
• CPC Class Codes: F04B 43/067 the fluid being actuated directly by a piston
• CPC Class Codes: F16K 15/044 spring-loaded
• CPC Class Codes: F16K 17/0406 in the form of balls
• CPC Class Codes: Y10T 137/7928 With follower

Abstract

A diaphragm head with a high energy content of the oil space (pressure×volume) has a strong negative influence on the corresponding behavior of the oil overflow valve. The reaction of the valve leads to an undesirable increase in the opening time by which more oil is discharged than oil introduced by means of a compensation pump. This has the result that after multiple strokes the diaphragm is not driven to its dead position. With this, all of the compressed gas is not expelled which is accompanied by a rapid decrease of the suction capacity.

The solution to this problem according to the present invention is achieved by means of a flow-interrupting edge formed at the junction of the valve seat and a restriction piece at the outlet side by which the operating forces of the valve spindle are sharply reduced. With this the effective closing force of the spring, as the dominant force component, leads to the desired fast closing time to the valve.

Claims

1. A spring-loaded oil overflow valve for a diaphragm compressor with a valve seat and a sealing ball therein, the ball being loaded by means of a spindle under spring tension characterized by a flow-interrupting edge (15) formed at a junction of the seat (10) and a restriction piece (14) connected to the outlet, which sharply reduces the driving force of the spindle, and with this, the effective force of the spindle, as the dominant force component, leads to a desirable fast closing time of the valve.

2. A spring-loaded oil overflow valve for diaphragm compressors according to claim 1 characterized in that the restriction piece (14) is in two parts formed by a restriction disk (16) and splitter body (17).

3. A spring-loaded oil overflow valve for diaphragm compressors according to claim 1 characterized by a central bore (18) disposed in the restriction piece (14), which serves as a guide for the spring-loaded spindle (12).

4. A spring-loaded oil overflow valve for diaphragm compressors according to claim 2 characterized by a central bore (18) disposed in the splitter body (17), which serves as a guide for the spring-loaded spindle (12).