Patent ID: 7766391

Claim:
A pipe connecting structure for a refrigerating cycle system, comprising: first and second pipes that are connected and arranged to allow a refrigerant to circulate in the refrigerating cycle; and connecting means that connects the first pipe to a second pipe, wherein the connecting means includes: a male flange block that includes a first pipe-combining hole to which the first pipe is fitted; a first combining protrusion that protrudes from a surface of the male flange block in communication with the first pipe-combining hole; a second combining protrusion that protrudes from the end face of the first combining protrusion and includes a first seating face inside the second combining protrusion; a sealing member that is fitted around the outside of the second combining protrusion and seated in the first seating face inside the second combining protrusion; a female flange block that includes a second pipe-combining hole bored from one side to insert the second pipe, a first protrusion-combining hole bored from the other side in communication with the second pipe-combining hole to insert the first combining protrusion, a second protrusion-combining groove formed around the edge inside the first protrusion-combining hole to insert the second combining protrusion, and a second seating face formed inside along the second protrusion-combining groove to seat a side of the sealing member; and fastening means that fastens the male flange block to the female flange block.