A large-cooling-capacity integrated Stirling pneumatic refrigerator supported by large-stroke column springs, consisting of an active vibration absorber, a motor, a coaxial type compression-expansion piston, a compression piston column spring, an expansion piston column spring, a hot-end radiator, a cylinder wall, a housing, and a cold finger, wherein the coaxial compression-expansion piston is composed of a compression piston and an expansion piston, the expansion piston is nested in the compression piston, and the compression piston and the expansion piston share one hot-end radiator; the compression piston is driven by a motor, and the expansion piston is driven by gas force and no motor drive is required. The compression piston and the expansion piston are both supported by column springs, the column spring provides an axial restoring force for the coaxial type compression-expansion piston. The active vibration absorber is installed at the tail part of the housing.

A large-cooling-capacity integrated Stirling pneumatic refrigerator supported by large-stroke column springs, consisting of an active vibration absorber, a motor, a coaxial type compression-expansion piston, a compression piston column spring, an expansion piston column spring, a hot-end radiator, a cylinder wall, a housing, and a cold finger, wherein the coaxial compression-expansion piston is composed of a compression piston and an expansion piston, the expansion piston is nested in the compression piston, and the compression piston and the expansion piston share one hot-end radiator; the compression piston is driven by a motor, and the expansion piston is driven by gas force and no motor drive is required. The compression piston and the expansion piston are both supported by column springs, the column spring provides an axial restoring force for the coaxial type compression-expansion piston. The active vibration absorber is installed at the tail part of the housing.

A superconducting magnet device includes a superconducting coil; a radiation shield that thermally protects the superconducting coil; a main cold head that cools the superconducting coil; a sub-cold head that cools the radiation shield; a common compressor that supplies a refrigerant gas to the main cold head and the sub-cold head; a first temperature sensor that measures a temperature of the radiation shield; a second temperature sensor that measures a temperature of the superconducting coil; and a controller configured to activate the sub-cold head for initial cooling of the superconducting magnet device, stop the sub-cold head based on an output of the first temperature sensor or the second temperature sensor, and operate the main cold head in a state where the sub-cold head is stopped.

A superconducting magnet device includes a superconducting coil; a radiation shield that thermally protects the superconducting coil; a main cold head that cools the superconducting coil; a sub-cold head that cools the radiation shield; a common compressor that supplies a refrigerant gas to the main cold head and the sub-cold head; a first temperature sensor that measures a temperature of the radiation shield; a second temperature sensor that measures a temperature of the superconducting coil; and a controller configured to activate the sub-cold head for initial cooling of the superconducting magnet device, stop the sub-cold head based on an output of the first temperature sensor or the second temperature sensor, and operate the main cold head in a state where the sub-cold head is stopped.

The present invention relates to a shipping container for cryopreserved biological samples in which a cryopreserved sample can be maintained on arrival at its destination for a period of time, for example several months.

The present invention relates to a shipping container for cryopreserved biological samples in which a cryopreserved sample can be maintained on arrival at its destination for a period of time, for example several months.

A Stirling freezer includes a cabinet body, at least one power unit, a pipeline, and a plurality of Stirling cooling modules. The cabinet body has a refrigerating space, a cold end space, and a hot end space. The power unit is connected to the pipeline. The Stirling cooling modules each include a pipe and a passive displacer. The passive displacer is reciprocally, movably disposed in the pipe to partition the pipe into a cold end and a hot end. The cold end is located in the cold end space. The hot end is located in the hot end space. The hot end is connected to the pipeline. The cold end absorbs thermal energy of the cold end space to form a low-temperature environment. Air flows between the cold end space and the refrigerating space, so that the refrigerating space also forms a low-temperature environment.

A Stirling freezer includes a cabinet body, at least one power unit, a pipeline, and a plurality of Stirling cooling modules. The cabinet body has a refrigerating space, a cold end space, and a hot end space. The power unit is connected to the pipeline. The Stirling cooling modules each include a pipe and a passive displacer. The passive displacer is reciprocally, movably disposed in the pipe to partition the pipe into a cold end and a hot end. The cold end is located in the cold end space. The hot end is located in the hot end space. The hot end is connected to the pipeline. The cold end absorbs thermal energy of the cold end space to form a low-temperature environment. Air flows between the cold end space and the refrigerating space, so that the refrigerating space also forms a low-temperature environment.

A method and an apparatus and a computer program product are provided that can monitor thermal mass or thermal energy sources available at remotely-located equipment using wired or wirelessly connected sensors. The method may include to receiving measurements captured by one or more sensors coupled to the equipment, the measurements including measurements indicating remaining quantities of thermal mass or thermal energy sources available for use by the equipment, monitoring replenishment events in which the thermal mass or thermal energy sources are resupplied, generating a thermal efficiency and usage or characteristic describing thermal efficiency and a cycle of usage of the thermal mass or thermal energy sources based on historical measurements of thermal efficiency and quantities of thermal mass or thermal energy sources consumed and stored by the equipment and a history of replenishment events, and scheduling one or more replenishment events based on the usage characteristic.

A cryocooler includes a first cylinder and a second cylinder, a first cooling stage, a second cooling stage, a radiation shield which is cooled by the first cooling stage, accommodates the second cooling stage, and shields the second cooling stage from radiant heat from an outside, and a temperature sensor which detects a temperature of the second cooling stage. A working gas is supplied into the first cylinder and the second cylinder to be expanded and is exhausted to the outside, an insertion hole through which an output cable of the temperature sensor passes through from an inside to an outside of the radiation shield is provided in the radiation shield, and the insertion hole is configured such that the radiant heat entering the radiation shield from the outside of the radiation shield is not directly radiated to the second cooling stage.