Power generation unit and fuel cell

A fuel cell having a power generation unit, said power generation unit comprising:

• a joint component of a power generation cell which is composed of a pair of electrodes and an electrolyte held between the electrodes, a flow path forming component allowing a fluid supplied to the joint component to flow therethrough, a fastening unit comprising a frame and a base, wherein the power generation cell is held between said base and frame, and a pressure plate attached to the frame to press the power generation cell, being composed of an electro-conductive material;
• and
• a fluid conveyance apparatus having an opening commonly functioning as an intake port and a discharge port of the fluid, and discharging the fluid into the flow path,
• wherein said fluid conveyance apparatus has a housing having at least one of said opening, and a diaphragm which divides inside of said housing into a first space and a second space, and
• wherein said first space and said second space both directly communicate with an external portion of said housing via said opening, and wherein said diaphragm also oscillates,
• a mixed vortex is formed with fluid inside of said housing discharged from said opening and fluid around said opening by oscillation of said diaphragm, and
• said mixed vortex is discharged to front of said opening.