Staggered square wave fin of shutter structure, heat exchanger and heat dissipation method

The invention discloses a staggered square wave fin of a shutter structure, a heat exchanger and a heat dissipation method. The staggered square-wave fin comprises a first fin set of a square-wave-shaped structure, the first fin set comprises a plurality of first fin units which are continuously connected, and a first windowing section is arranged on the vertical face of each first fin unit; the second fin set is of a square-wave-shaped structure and comprises a plurality of second fin units which are continuously connected, a second windowing section is arranged on the vertical face of each second fin unit, the second fin units and the first fin units are arranged in a staggered mode in the same direction, and the second windowing sections and the first windowing sections extend in the same direction; the first windowing section and the second windowing section each comprise two blade sets arranged at intervals, and each blade set comprises a plurality of inclined blades arranged in the same direction at int