Patent ID: 7878158
Filing Date: 2011-02-01
Classification: F24H,Y02B

Abstract:
1. A forward combustion type condensing gas water heater comprising: a flue gas path; a burner for producing heated flue gas for passage through the flue gas path; a primary heat exchanger within the flue gas path; a secondary heat exchanger within the flue gas path; a gathering and discharge device for condensation water within the flue gas path in fluid connection with the secondary heat exchanger; and a drain pipe for condensation water connected to the gathering and discharge device for condensation water; wherein the gathering and discharge device for condensation water and the secondary heat exchanger have center lines different from a center line of the primary heat exchanger, the drain pipe for condensation water extends outside the primary heat exchanger and is provided on a lowest portion of the gathering and discharge device for condensation water, and the flue gas path is configured for flue gas to rise through the primary heat exchanger and then pass through the secondary heat exchanger in a direction staggered with respect to a falling direction of condensation water.