Patent ID: 8544500

Claim:
A chemical fluid flow channel coupling apparatus that couples and decouples chemical fluid flow channels, the coupling apparatus comprising: a first coupling unit; and a second coupling unit, wherein the first coupling unit includes: a first chemical fluid flow channel configured to flow the chemical fluid; a first coupling flow channel having a first coupling surface; a purging fluid supply flow channel for supplying a fluid for purging; a first chemical fluid valve member chamber being communicated with the first chemical fluid flow channel, the first coupling flow channel, and the purging fluid supply flow channel; a first valve member configured to open and close a first chemical fluid opening, the first chemical fluid opening being formed in a first inner wall surface of the first chemical fluid valve member chamber, the first chemical fluid opening being communicated with the first chemical fluid flow channel; and a purging fluid supply control valve configured to open and close the purging fluid supply flow channel, wherein the second coupling unit includes: a second chemical fluid flow channel configured to flow the chemical fluid; a second coupling flow channel having a second coupling surface configured to allow a coupling and a decoupling to the first coupling surface; a purging fluid discharge flow channel configured to discharge the fluid for purging; a second chemical fluid valve member chamber being communicated with the second chemical fluid flow channel, the second coupling flow channel, and the purging fluid discharge flow channel; a second valve member configured to open and close a second chemical fluid opening, the second chemical fluid opening being formed in a second inner wall surface of the second chemical fluid valve member chamber, the second chemical fluid opening being connected to the second chemical fluid flow channel; and a purging fluid discharge control valve configured to open and close the purging fluid supply flow channel.