Heat exchange plate, heat exchange plate pair, heat exchange plate bundle and heat exchanger

The utility model provides a heat exchange plate, a heat exchange plate pair, a heat exchange plate bundle and a heat exchanger, the heat exchange plate comprises a plate body, the short edge of the plate body is provided with a first medium flow channel inlet, the long edge of the plate body is provided with a second medium flow channel inlet, and the plate body is provided with multiple rows of first corrugations at intervals in the width direction; each row of first corrugations comprises a plurality of first grooves formed in the length direction of the plate body at intervals, a second groove is connected between every two adjacent first grooves in the length direction, and the depth of the second grooves is smaller than that of the first grooves; second corrugations are connected between every two adjacent rows of first corrugations, and the depth of the second corrugations is smaller than that of the second grooves. According to the heat exchange plate, the heat exchange plate pair, the heat exchange p