Vortex-type flow regulation valve

A vortex-type flow regulation valve (11) comprises: a vortex chamber (27) that is defined by a cylinder-shaped circumferential side wall (13), and a first end wall (15) and a second end wall (17) that are provided at either end of the same; an inlet flow passage (19) that extends along an inlet flow passage center axis (P1) and opens in the circumferential side wall (13); an outlet flow passage (21) that extends along an outlet flow passage center axis (P2) and opens in the first end wall (15); a protrusion (23) that protrudes into the vortex chamber (27) from one of the first end wall (15) and the second end wall (17); and a driving unit (25) that causes the protrusion (23) to move toward and away from the other of the first end wall (15) and the second end wall (17), within the vortex chamber (27). The inlet flow passage (19) is provided such that the inlet flow passage center axis (P1) passes through a location that is distanced from a vortex chamber center axis (O), and the movement of the protrusion (23)