Patent ID: 11913714
Assignee: ANYON SYSTEMS INC.
Field: Thermal processes and apparatus (Mechanical engineering)
Classification: CPC F | IPC F

Claim 0:
1. A dilution refrigerator comprising:
a cryostat comprising a plurality of temperature-controlled flanges inside a vacuum chamber, the temperature-controlled flanges including a first group of flanges cooled to a first set of progressively lower temperatures and a second group of flanges cooled to a second set of progressively lower temperatures that are higher than the first set of progressively lower temperatures;
a dilution unit disposed inside the cryostat and operable to cool the first group of flanges to the first set of progressively lower temperatures; and
a continuous flow helium refrigerator in heat transfer communication with a lowest temperature flange of the second group of flanges to provide primary cooling thereto to a first temperature, the continuous flow helium refrigerator residing at least partially in the cryostat and comprising a helium liquefier and a first closed-loop circuit thermally coupling the helium liquefier to the lowest temperature flange of the second group of flanges, the helium liquefier including a compressor, an expander downstream from the compressor, at least one heat exchanger between the compressor and the expander, and a liquid helium reservoir downstream from the expander and providing liquid helium to the lowest temperature flange of the second group of flanges via the first closed-loop circuit, a portion of the first closed-loop circuit outside the helium liquefier being engaged to the lowest temperature flange to provide heat transfer from the lowest temperature flange to the liquid helium flowing in said portion of the first closed-loop circuit.