Heat exchanger, air conditioner, and apparatus for manufacturing heat exchanger

An apparatus for manufacturing a heat exchanger including a flat tube and a fin attached to the flat tube with an outer periphery of the flat tube being fitted to a fitting groove on the fin, the apparatus comprising:

• a drum rotatable about a center axis;
• a fin holder arranged in a radial direction of the drum and configured to hold the fin with the fitting groove open outward in a direction of an outer periphery of the drum, the fin holder being rotatably held by the drum and movable to a fin attaching position when the drum rotates;
• a flat tube positioner configured to restrict the flat tube to a position at which a cross section of the flat tube perpendicular to the axis of the flat tube has a longitudinal direction toward the drum;
• a moving mechanism configured to move the flat tube restricted by the flat tube positioner to the fin attaching position;
• and
• a cam follower arranged on the fin holder and configured to, when the fin holder moves to the fin attaching position, come in contact with a cam member to rotate the fin holder,
• wherein the fin attaching position includes a position at which the rotated fin holder inclines the fin held by the fin holder with respect to the longitudinal direction of the flat tube and the fin is fixed to the tube at an inclined position with respect to the longitudinal direction of the flat tube.