Patent ID: 8356888

Claim:
A channel forming body forming a channel for a fluid, the channel forming body comprising: a first member having a fitting groove; and a second member having an outer shape which is fittable in the fitting groove and which is fitted in the fitting groove, wherein a channel groove is formed in at least one of a bottom portion of the fitting groove of the first member and a facing surface of the second member facing the bottom portion, a gap between an inner sidewall surface of the fitting groove of the first member and a sidewall surface of the second member is sealed, with the inner sidewall surface of the fitting groove of the first member contacting the sidewall surface of the second member, and the channel through which the fluid flows is formed by the channel groove, and wherein the first member has a first channel groove formed in the bottom portion of the fitting groove of the first member, the second member has a second channel groove formed in the facing surface of the second member, and the channel is formed as being bent in a cranked shape by the first channel groove and the second channel groove.