Regenerative displacer for use in a stirling engine

A regenerative displacer for use in a Stirling engine, said Stirling engine comprising:

• a cylinder and a regenerative displacer disposed in said cylinder to thereby divide said cylinder into a heating portion and a cooling portion, an expansion chamber being enclosed by said heating portion and a compression chamber being enclosed by said cooling portion, a power piston being disposed in said compression chamber and being disposed at a distance from said regenerative displacer,
• wherein said regenerative displacer comprises a body having a peripheral wall by which an accommodation space is enclosed,
• a first cover and a second cover engaging and covering an upper end and a lower end of said peripheral wall of said body respectively,
• a regenerator disposed in said accommodation space, and
• a rod inserted through a slot formed in said regenerator and a bore formed in said second cover into said cooling portion of said Stirling engine,
• a plurality of through openings penetrating a surface of said first cover and a surface of said second cover respectively,
• said regenerator having a plurality of channels spaced from each other, each of said channels having two opposite open ends each communicating with said accommodation space,
• each of said opposite open ends being engaged with a heat collecting net;
• and
• wherein the heat collecting net being covered at said upper and said lower ends by said first and said second covers.