Heat exchanger having a manifold plate structure

A heat exchanger having a manifold plate structure, comprising:

• a first end plate and a second end plate, each end plate being configured on a respective side end of the heat exchanger;
• and
• a plurality of flat tubes, the flat tubes being stacked together so that plates constituting the flat tubes are arranged in the order of the second end plate, a first plurality of pairs of plates, a first pair of manifold plates to which a refrigerant inflow pipe is connected, the first pair of manifold plates having a first manifold plate which is located at a side of the first end plate and second manifold plate which is located at a side of the second end plate, a second plurality of pairs of plates, a second pair of manifold plates to which a refrigerant outflow pipe is connected and a third plurality of pairs of plates configured adjacent to the first end plate;
• wherein a first burr portion projected from an edge of an inlet-side slot of the first manifold plate to an outside is fixedly inserted into a first slot of a plate among the second plurality of pairs of plates adjacent to the first manifold plate, and a second burr portion projected from an edge of a second slot of a plate among the first plurality of pairs of plates adjacent to the second manifold plate is fixedly inserted into an inlet-side slot of the second manifold plate, and
• wherein each of the length and width of the first slot and the length and width of the inlet-side slot of the first manifold plate is less than the length and width of the inlet-side slot of the second manifold plate, respectively.