Heat exchange fin, heat exchanger, water tank assembly, and gas water heater

A water tank assembly comprising:

• a tank body provided with a flue gas chamber;
• and
• a heat exchanger arranged inside the flue gas chamber and including:
• a heat exchange fin including:
• a fin body provided with a plurality of tube pass-through holes that penetrate the fin body along a thickness direction of the fin body, an inflow end and an outflow end of the fin body being arranged with respect to each other along a flue gas inlet direction of the flue gas chamber;
• a turbulator connected to a surface of a side of the fin body along the thickness direction to obstruct part of flue gas flowing towards the outflow end;
• and
• a guide structure connected to the fin body and positioned on a same surface of the fin body as the turbulator, the guide structure being positioned on a side of the turbulator adjacent to the inflow end to guide the flue gas to the turbulator;
• and
• a primary heat exchange tube bundle and a condensation tube bundle arranged in sequence along the flue gas inlet direction, the primary heat exchange tube bundle being threaded through the tube pass-through holes.

A gas water heater comprising:

• a housing;
• a water tank assembly arranged inside the housing and including:
• a tank body provided with a flue gas chamber;
• and
• a heat exchanger arranged inside the flue gas chamber and including:
• a heat exchange fin including:
• a fin body provided with a plurality of tube pass-through holes that penetrate the fin body along a thickness direction of the fin body, an inflow end and an outflow end of the fin body being arranged with respect to each other along a flue gas inlet direction of the flue gas chamber;
• a turbulator connected to a surface of a side of the fin body along the thickness direction to obstruct part of flue gas flowing towards the outflow end;
• and
• a guide structure connected to the fin body and positioned on a same surface of the fin body as the turbulator, the guide structure being positioned on a side of the turbulator adjacent to the inflow end to guide the flue gas to the turbulator;
• and
• a primary heat exchange tube bundle and a condensation tube bundle arranged in sequence along the flue gas inlet direction, the primary heat exchange tube bundle being threaded through the tube pass-through holes;
• and
• a burner arranged inside the housing and configured to generate flue gas flowing towards the flue gas chamber.