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US 5,187,953 AGranted
Fail-safe apparatus for purge system
OwnerGordon L. Mountinventor
Life of this patent
Estimating the term…
Abstract
Provision is made in a refrigeration purge system for sensing certain conditions indicative of failure of components within the system, to responsively shut-down the system and prevent refrigerant from being undesirably vented to the atmosphere. Failure conditions sensed include inadequate cooling medium to the condenser coil and failure of a relief valve.
Claims14
An improved purge recovery system of a type having a purge chamber, a refrigerant condensing coil in the purge chamber by way of a cooling medium passing through the coil, and a vent circuit for removing non-condensable gases from the purge chamber, wherein the improvement comprises:
- means for sensing when the temperature of the coil reaches a predetermined temperature limit indicative of an inadequate supply of cooling medium to the coil;
- and
- switching means responsive to said temperature sensing means for turning off the purge recovery system when said predetermined temperature limit is exceeded.
Dependencies are inferred from the claim text.