| 摘要 |
PURPOSE: A plate heat exchanger is provided to reduce manufacturing time for heat exchanger by reducing the time taken for alignment of plates and off-set fins. CONSTITUTION: A plate heat exchanger comprises an upper plate(41) forming an upper wall of the tunnel constituting an outer appearance of the plate heat exchanger; a lower plate(42) forming a lower wall of the tunnel; a first side plate(43) and a second side plate(44) forming side walls of the tunnel, and each of which has a semi-circular protrusion(45) formed at upper and lower portions of each of side plates connected in a vertical direction to the upper plate and lower plate; first to fifth plates(51,52,53,54,55) stacked within the tunnel, and each of which has a notching portion(56) having a radius(R) same as the radius of the protrusion formed at each of side plates; a plurality of off-set fins(30) inserted and coupled among first to fifth plates; and first heat and fluid inlet and outlet pipes(60,61), and second heat and fluid inlet and outlet pipes(62,63) inserted into the space formed by protrusions formed at first and second side plates and notching portions of first to fifth plates, and each of which has a closed end. First and second heat and fluid inlet and outlet pipes have slots(64) for communication to the internal space formed among first to fifth plates.
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