Patent ID: 8381798

Claim:
A micro fluid device in which a plurality of units each having piping integrally coupled together to bring each piping of the units into communication with each other to cause fluid to flow into the piping to perform unit operations, and at least one of the plurality of units is a temperature controlling unit for controlling the temperature of the fluid, comprising: a heating unit which heats the fluid and a cooling unit which cools the fluid, the heating unit and the cooling unit which are provided in the temperature controlling unit; and a heat insulator which has a through hole equal in diameter to the piping and is interposed between the heating unit and the cooling unit, wherein the heating unit and the cooling unit are thermally-insulated by the heat insulator, the piping of the heating unit and the piping of the cooling unit are thermally-insulated by the through hole formed in the heat insulator, and the heat insulator includes a positioning mechanism which positions the piping of the heating unit, the piping of the cooling unit and the through hole so as to communicate with each other.