Patent ID: 9372020
Filing Date: 2016-06-21
CPC Classification: F25B

Claim Text:
1. In a system which generates, from a medium, divided separate flows of high pressure gaseous phase of the medium, and a differential flow of the medium in liquid phase and the system requires thermal control of a thermal load at an operative site that is physically displaced from the location at which separate gaseous and liquid flows are generated and divided, a temperature control unit for disposition at the operative site in proximity to the thermal load comprising: a thermo-expansion device receiving the liquid phase of the medium and providing a cooled expanded flow of the gaseous phase of the medium proximate the thermal load, the cooled expanded flow determined by a differential temperature between a superheated gas and a temperature of an output fluid from a second mixer; a solenoid valve positioned between a proportional valve and the second mixer, the solenoid valve controlled to be shut off whenever the system is programmed to make a change in a target temperature; a first mixer receiving the high pressure gaseous phase of the medium at one input and providing an output to the thermal load, the first mixer having a second input receiving a pressurized gaseous phase of the medium; and the second mixer having two inputs and receiving a controlled fraction of the high pressure gaseous phase of the medium at one input from the solenoid valve and the output from the load at a second input, and providing a return output to the system.