Diaphragm module for pneumatic control systems

Details Diaphragm module for pneumatic control systems Diaphragm module for pneumatic control systems

1983-01-31

1985-06-11

Cohan, Alan

Fluid handling

Pressure modulating relays or followers

With counter-balancing pressure feedback to the modulating...

92 97, G05D 1600

Patent

active

045222207

ABSTRACT:
A diaphragm module for pneumatic control systems comprises at least a pressure comparing stage and a force/pressure transducer controlled by said stage. The design of said module comprises chambers in a housing divided by diaphragms, wherein the force transmission between the diaphragms is achieved by intermediately arranged diaphragm disks. For a low friction mounting of the diaphragm disks in the housing without fixation with the intermediately arranged diaphragms the module comprises the following design: The diaphragm disks (36-39) comprise central pin projections (40) and recesses (44), wherein the pin projection of a diaphragm disk each is inserted into a recess of an adjacent diaphragm disk via a central hole (35) provided in the comparing or tightening diaphragm (31, 33, 34), respectively; the housing (11-16) and the diaphragm disk (36-39) comprise annular ribs (42) which are pressed into the diaphragms (30-34) for tightening when pressure is applied; and at least two diaphragm disks (36-39) comprise in their plane surfaces concentric annular grooves (43) which are engaged by annular collars (41) of related diaphragms (FIG. 1).

REFERENCES:
patent: 3169402 (1965-02-01), Baker
patent: 3461896 (1969-08-01), Holloway
patent: 4245549 (1981-01-01), Hardin

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