Patent ID: 8501060

Claim:
A temperature control liquid circulator system configured for circulating a temperature control liquid through a process that includes a mold, die or barrel, the temperature control liquid circulator system comprising: a liquid control loop comprising a liquid supply line plumbed to an inlet side of a cooling cavity associated with said mold, die or barrel and a liquid return line plumbed to an outlet side of said cooling cavity; a pump disposed in said liquid control loop whereby the temperature control liquid is advanced from said liquid return line into said liquid supply line and through said cooling cavity; an inline restriction to liquid flow in said liquid control loop, the restriction being configured to lower a pressure of said temperature control liquid in said cooling cavity below ambient pressure and below the vapor pressure of the temperature control liquid in the cooling cavity; and a gas injector connected to a gas source and coupled to said liquid control loop, said gas injector being configured for introducing seed bubbles of gas into said liquid flow at a location in said liquid flow that will cause the seed bubbles to initiate boiling of the temperature control liquid at a desired location in the cooling cavity even if the temperature control liquid is depleted of dissolved air and would otherwise be subject to delayed boiling.