Abstract:
Disclosed is an ultra-low temperature, dual-compressor (114,144), recirculating gas chilling system that includes a closed-loop mixed-refrigerant primary refrigeration system (110) in combination with a closed-loop gas secondary refrigeration loop (112). The ultra-low temperature, dual-compressor (114,144), recirculating gas chilling system disclosed is capable of providing continuous long term chilled gas and fast cooling of a high or ambient temperature object (158), such as a chuck used in processing semiconductor wafers or any such device. The gas chilling system is characterized by three modes of operation: a normal cooling mode, a bakeout mode, and a post-bake cooling mode.
Abstract:
The disclosure is directed to a cooling system that includes a first refrigerant cycle and a second refrigerant cycle. The first refrigerant cycle has a first refrigerant and the second refrigerant cycle has a second refrigerant comprising a mixture of cryogenic components. The disclosure is also directed to a cooling system that includes a first refrigerant cycle and a second refrigerant cycle. The first refrigerant cycle has a first refrigerant. The second refrigerant cycle has a second refrigerant comprising a non-reactive component. The second refrigerant is free of fluorocarbons, chlorofluorocarbons, and hydrocarbons. At least a portion of the second refrigerant is condensed in the second refrigerant cycle.
Abstract:
The heat exchanger (500) includes a fluid inlet manifold (502), a fluid outlet manifold (508), a plurality of heat transfer channels (504) configured to communicate with the fluid inlet manifold (502) and the fluid outlet manifold (508), and packing (510) located within the fluid inlet manifold (502).
Abstract:
Refrigerant freezeout is prevented, and temperature is controlled, by the use of a controlled bypass flow that causes a warming of the lowest temperature refrigerant in a refrigeration system that achieves very low temperatures by using a mixture of refrigerants comprising at least two refrigerants with boiling points that differ by at least 50°C. This control capability enables reliable operation of the very low temperature system.
Abstract:
Disclosed is an ultra-low temperature, dual-compressor, recirculating gas chilling system that includes a closed-loop mixed-refrigerant primary refrigeration system in combination with a closed-loop gas secondary refrigeration loop. The ultra-low temperature, dual-compressor, recirculating gas chilling system disclosed is capable of providing continuous long term chilled gas and fast cooling of a high or ambient temperature object, such as a chuck used in processing semiconductor wafers or any such device. The gas chilling system is characterized by three modes of operation: a normal cooling mode, a bakeout mode, and a post-bake cooling mode.
Abstract:
Refrigerant freezeout is prevented, and temperature is controlled, by the use of a controlled bypass flow that causes a warming of the lowest temperature refrigerant in a refrigeration system that achieves very low temperatures by using a mixture of refrigerants comprising at least two refrigerants with boiling points that differ by at least 50°C. This control capability enables reliable operation of the very low temperature system.