CONDENSING GAS WATER HEATER, CONDENSING HEAT EXCHANGER AND HEAT EXCHANGER PLATE

摘要

The invention discloses a condensing gas water heater, a condensing heat exchanger as well as heat exchanger plates. The condensing heat exchanger comprises: a housing and at least one heat exchanger plate disposed in the housing; the heat exchanger plate comprises a first metal board and a second metal board butting each other, wherein a surface of the first metal board and a surface of the second metal board which butt each other are butting surfaces, and two outer surfaces opposite to the butting surfaces are a first surface and a second surface, respectively; at least one of the first metal board and the second metal board is formed with a convex flow guide portion along a direction away from the butting surface; the first metal board and the second metal board form a fluid passage via the flow guide portion; and the housing is provided with a flue gas inlet and a flue gas outlet. The condensing gas water heater, the condensing heat exchanger as well as the heat exchanger plates provided in the invention can increase heat exchange efficiency, reduce cost, realize a modular assembly and improve ease of mounting.