Heat exchanger and air-conditioning apparatus

A heat exchanger comprising:

• a plurality of heat transfer tubes disposed at intervals in an up-down direction;
• and
• a distributor configured to distribute refrigerant to the plurality of heat transfer tubes,
• the distributor having
• a main body having a first inflow opening through which refrigerant flows in and a first flow passage through which refrigerant flowing in through the first inflow opening flows upward, and
• at least one insertion part disposed inside the main body,
• an upper one and a lower one of two arbitrary heat transfer tubes among the plurality of heat transfer tubes arrayed in the up-down direction are referred to as a first heat transfer tube and a second heat transfer tube, respectively,
• the at least one insertion part being installed between the first heat transfer tube and the second heat transfer tube, the at least one insertion part having a first planar part that faces the first heat transfer tube and the second heat transfer tube, and the at least one insertion part having a second planar part that is formed on an edge of the first planar part and faces a wall surface of the main body,
• the main body having a second flow passage that is surrounded by the second planar part and the wall surface of the main body and through which refrigerant flowing in through the first inflow opening flows upward, the refrigerant being configured to flow in the second flow passage between an entirety of the second planar part and the wall surface of the main body,
• refrigerant passing through the first flow passage and the second flow passage flowing through the first heat transfer tube,
• refrigerant passing through the first flow passage flowing through the second heat transfer tube.