Abstract: The present invention provides a heat exchanger, comprising a plurality of first heat exchange plates (1) and second heat exchange plates (2) that are connected sequentially and at an interval; the first heat exchange plates (1) and the second heat exchange plates (2) each comprise a heat exchange sheet (3) and a heat exchange frame (4) disposed on side ends of the heat exchange sheet (3); the side ends of the heat exchange sheet (3) are formed with a snap projection (9) in a direction away from the heat exchange frame (4); the heat exchange frame (4) is formed with a snap groove (10); the first heat exchange plates (1) and the second heat exchange plates (2) are in interference connection through the engagement between the snap projection (9) and the snap groove (10); an air channel (5, 6) is formed between a first heat exchange plate (1) and an adjacent second heat exchange plate (2), the air inlet of the first heat exchange plate (1) and the air inlet of the second heat exchange plate (2) have different di

Abstract: The present invention provides a heat exchanger, comprising a plurality of first heat exchange plates (1) and second heat exchange plates (2) that are connected sequentially and at an interval; the first heat exchange plates (1) and the second heat exchange plates (2) each comprise a heat exchange sheet (3) and a heat exchange frame (4) disposed on side ends of the heat exchange sheet (3); the side ends of the heat exchange sheet (3) are formed with a snap projection (9) in a direction away from the heat exchange frame (4); the heat exchange frame (4) is formed with a snap groove (10); the first heat exchange plates (1) and the second heat exchange plates (2) are in interference connection through the engagement between the snap projection (9) and the snap groove (10); an air channel (5, 6) is formed between a first heat exchange plate (1) and an adjacent second heat exchange plate (2), the air inlet of the first heat exchange plate (1) and the air inlet of the second heat exchange plate (2) have different di

Abstract: The seal (3) is provided with a plurality of laterally projecting attachment portions (14, 20, 814, 30, 31), located at longitudinally spaced positions along the seal. The rim (R) of the plate is formed with a plurality of recesses (19, 21, 33, 34) which extend laterally from the groove (10) in a direction essentially perpendicular to the groove at the locations of the attachment portions. The recesses, formed as cuts from the edge (15) (15') of the rim (R, R') are open to the terminal edge of the rim (R), so that, for placement or replacement of the seal, the seal, or seal portions, e.g., after loosening from the groove (10), can be readily slid outwardly of the groove by gripping the attachment portions. The seal (3) and the attachment portions are protected by the portion of the rim (R, R') extending beyond the recesses.