BITE TYPE PIPE CONNECTION STRUCTURE, VALVE, BITE TYPE PIPE JOINT, AND FREEZING EQUIPMENT

摘要

PROBLEM TO BE SOLVED: To provide a bite type pipe connection structure designed for a predetermined diameter pipe(large-diameter tube) as a standard, capable of connecting a small-diameter pipe (small diameter tube) smaller than that of the predetermined diameter tube, a valve, a pipe joint and refrigeration equipment using the same.;SOLUTION: The bite type pipe connection structure has a large-diameter insertion opening 16 through which a large diameter pipe is inserted into an axis part of a joint body 1 and a large diameter step portion 16a, and a small diameter insertion opening 17 and also a small diameter step portion in the depth of the large diameter insertion opening 16, and a small diameter step portion. When connecting the large diameter tube, the tip end part of the large diameter pipe is inserted into the large diameter insertion opening, and connected using the large diameter ferrule. When connecting the small diameter pipe P3, the tip end part of the small diameter pipe P3 is inserted into the small diameter insertion opening 17, and connected using the small diameter ferrule 6. A radial thickness t1 in a front edge portion 3a of the small diameter ferrule 6 is greater than at least a clearance dimension t4 of a clearance 71 between the large diameter insertion opening 16 and a small diameter pipe P3.;COPYRIGHT: (C)2009,JPO&INPIT