A vortex generating device (60, 60A, 60B, 60N) provided to face a heat exchanger (30, 30A, 30B, 30N) of a refrigeration cycle apparatus (100, 100A, 100B, 100C, 100D), the vortex generating device (60, 60A, 60B, 60N) comprising: support bodies; and vane bodies provided on the support bodies, wherein between the support bodies and the vane bodies, respective first spaces are provided to allow air to flow therethrough, wherein the vane bodies each include one end located on one side in a flow direction of air, an other end located on an other side in the flow direction of air, and a surface (S1, S2) extending along the flow direction of air and from the one end to the other end, wherein the vane bodies each include a first vane (602A, 802A) which is formed as a plate-shaped element, and a second vane (602B, 802B) which is formed as a plate-shaped element and paired with the first vane (602A, 802A), the vortex generating device being characterized in that the first vane (602A, 802A) includes a first end associated with the one end, a second end associated with the other end, and a first surface associated with the surface extending along the flow direction of air, and wherein the second vane (602B, 802B) includes a fourth end associated with the one end, a fifth end associated with the other end, and a second surface associated with the surface extending along the flow direction of air, and wherein the first surface and the second surface are formed such that a first direction and a second direction intersect each other, where the first direction is a direction from the first end to the second end along the first surface, and the second direction is a direction from the fourth end to the fifth end along the second surface. support bodies; and vane bodies provided on the support bodies, wherein between the support bodies and the vane bodies, respective first spaces are provided to allow air to flow therethrough, wherein the vane bodies each include one end located on one side in a flow direction of air, an other end located on an other side in the flow direction of air, and a surface (S1, S2) extending along the flow direction of air and from the one end to the other end, wherein the vane bodies each include a first vane (602A, 802A) which is formed as a plate-shaped element, and a second vane (602B, 802B) which is formed as a plate-shaped element and paired with the first vane (602A, 802A), the vortex generating device being characterized in that the first vane (602A, 802A) includes a first end associated with the one end, a second end associated with the other end, and a first surface associated with the surface extending along the flow direction of air, and wherein the second vane (602B, 802B) includes a fourth end associated with the one end, a fifth end associated with the other end, and a second surface associated with the surface extending along the flow direction of air, and wherein the first surface and the second surface are formed such that a first direction and a second direction intersect each other, where the first direction is a direction from the first end to the second end along the first surface, and the second direction is a direction from the fourth end to the fifth end along the second surface.