Integrated slit cold head of U-shaped pulse tube refrigerating machine and manufacturing method

• Main Authors: WANG LIBAO, WU YINONG, YANG KAIXIANG, DANG HAIZHENG, LI SHANSHAN, SHEN WEIBIN
• Format: Patent
• Language: Chinese; English
• Published: 04.05.2011
• Subjects: BLASTING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; HEATING; LIGHTING; LIQUEFACTION SOLIDIFICATION OF GASES; MANUFACTURE OR STORAGE OF ICE; MECHANICAL ENGINEERING; REFRIGERATION MACHINES, PLANTS OR SYSTEMS; REFRIGERATION OR COOLING; WEAPONS

The invention discloses an integrated slit cold head of a U-shaped pulse tube refrigerating machine and a manufacturing method. The cold head comprises two parts of a top cover and a lower flange, wherein two cylindrical lug bosses protrude below a big lug boss of the top cover, outer diameters of the two cylindrical lug bosses are respectively equal to inner diameters of a cold regenerator and a pulse tube; the two lug bosses integrally cut and penetrate through a slit in parallel horizontally and uniformly; through insertion holes matched with the cylindrical lug bosses of the top cover are arranged on the lower flange, a sealing groove and a location groove matched with the big lug boss of the top cover are cut on the upper surface of the lower flange, the lower flange, the cold regenerator and the pulse tube are hermetically welded to form an assembly; the top cover and the lower flange not only can be connected by bolts to form a detachable split cold head, but also can be hermetically welded to form an