CONNECTION STRUCTURE OF A DOUBLE VACUUM PIPE, DOUBLE VACUUM PIPE, AND JOINT OF A DOUBLE VACUUM PIPE CAPABLE OF REDUCING AN AIR EXHAUST WORK

摘要

PURPOSE: A connection structure of a double vacuum pipe, a double vacuum pipe, and a joint of a double vacuum pipe are provided to improve the heat insulating properties of inner and outer pipe joint units.;CONSTITUTION: A connection structure of a double vacuum pipe comprises a double vacuum pipe and a joint(50). The double vacuum pipe has an inner pipe and an outer pipe. The outer pipe covers the inner pipe. The double vacuum pipe vacuumizes a gap between the inner and outer pipes. The joint has an inner pipe joint unit(51) and an outer pipe joint unit(61). The inner pipe connection units(53) of the inner pipe joint unit are connected to the inner pipe. The outer pipe connection units(63) of the outer pipe joint unit are connected to the outer pipe. An exhaust passage is formed by the space between the inner and outer pipe joint units.;COPYRIGHT KIPO 2012