Cryocooler with magnetic reciprocating piston

A cryocooler is described that can include a pressure wave generator, and a refrigeration device (for example, a coldhead), which can be used to liquefy a gas when the gas is exposed to a surface of the refrigeration device. The pressure wave generator can include one or more motors. Each motor can include a stator, and at least one electrical coil wound around a portion of the stator. The electrical coil can generate a reversing magnetic field when alternating electric current is passed through the electrical coil. The motor can further include a pressurized container that can be placed within the space enclosed by the stator, and a piston that can be placed inside the pressurized container. The stators can be placed external to the pressurized container. The piston is made by combining magnets that have opposite and transverse polarities, and are combined adjacently on a common reciprocating axis. 描述了一种低温制冷机，该低温制冷机可以包括压力波发生器以及制冷装置(例如，冷头)，在气体暴露于该制冷装置的表面时该制冷装置能够用于液化气体。压力波发生器可以包括一个或多个马达。每个马达可以包括定子以及围绕所述定子的一部分缠