Thermally responsive relief valve
First Claim
1. In a normally closed thermostatic pressure relief valve including a vent orifice and a bimetallic disc for selectively opening and closing said vent orifice, said vent orifice having an arcuate concave valve seat coincidental therewith, said bimetallic disc having an unclamped periphery and an arcuate convex central surface formed integrally therein for cooperation with said valve seat to block fluid flow through said vent orifice, and said bimetallic disc being snappable to an open position responsive to an elevated temperature condition for displacing said arcuate convex central surface on said disc from said arcuate concave valve seat to allow fluid flow through said vent orifice.
2 Assignments
0 Petitions
Accused Products
Abstract
A thermally responsive pressure relief valve using a bimetallic valve disc as a component. The bimetallic valve disc is used as a temperature sensitive valve seal. When temperatures go beyond the set point of the disc, it opens the valve with a snap acting motion permitting pressure to be vented through the valve. The valve disc automatically resets and reseals the valve when temperatures return to the reset point of the disc.
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Citations
9 Claims
- 1. In a normally closed thermostatic pressure relief valve including a vent orifice and a bimetallic disc for selectively opening and closing said vent orifice, said vent orifice having an arcuate concave valve seat coincidental therewith, said bimetallic disc having an unclamped periphery and an arcuate convex central surface formed integrally therein for cooperation with said valve seat to block fluid flow through said vent orifice, and said bimetallic disc being snappable to an open position responsive to an elevated temperature condition for displacing said arcuate convex central surface on said disc from said arcuate concave valve seat to allow fluid flow through said vent orifice.
Specification