Vacuum steam generating heat exchanger for wall-hung condensing gas furnace

[0012] The vacuum steam generating heat exchanger for the condensing wall-hung boiler of the present invention includes a heat exchanger and a vacuum steam generator. It consists of a water return pipe 1, a steam output pipe 2, a water level observation window 3, a heat conducting smoke pipe 4, and a flue gas vent pipe 5. The flue gas outlet pipe 6, the flue gas channel partition 7, the flue gas collection channel 8, the flue gas collection channel 9, the burner 10, the gas delivery pipe 11, the medium water 12, the water cavity wall 13, the water cavity 14, the housing 15, the changer Heater blade 16, steam heat exchanger tube 17, and heat exchange cavity 18;

[0013] A. The heat exchanger is composed of water return pipe 1, heat exchanger blade 16, steam heat exchanger tube 17 and heat exchange cavity 18; the bottom of heat exchange cavity 18 is equipped with a water return pipe 1, and the other end of the water return pipe 1 is connected to the water cavity 14. A steam heat exchanger tube 17 is installed in the cavity of the hot cavity 18, and a heat exchanger blade 16 is installed on the steam heat exchanger tube 17;

[0014] B. The vacuum steam generator consists of steam output pipe 2, water level observation window 3, heat conduction smoke pipe 4, flue gas vent pipe 5, flue gas outlet pipe 6, flue gas channel partition 7, flue gas collection channel 8, smoke collection channel 9. The burner 10, the gas delivery pipe 11, the medium water 12, the water cavity wall 13, the water cavity 14, and the shell 15 are composed; a water cavity 14 is installed in the center of the shell 15, a burner 10 is installed at the bottom of the water cavity 14, and the burner 10 is connected to gas The conveying pipe 11, the upper end of the burner 10 is connected to the heat-conducting smoke pipe 4 through the flue gas collection channel 8. The heat-conducting smoke pipe 4 is installed on the outer water cavity wall 13 of the water cavity 14, and the smoke is fixed and assembled between two adjacent heat-conducting smoke pipes 4 The channel partition 7, one end of the flue gas channel partition 7 is consolidated with the water cavity wall 13, and the other end is consolidated with the housing 15. Every two adjacent heat conducting smoke pipes 4 and the flue gas channel partition 7 form a smoke collecting channel 9. The heat-conducting smoke pipe 4 at the uppermost end of the cavity wall 13 is connected to the flue gas outlet pipe 6 through the flue gas vent pipe 5; a steam output pipe 2 is installed at the top of the water cavity 14 and the steam output pipe 2 is connected to the heat exchange cavity 18. The water cavity 14 is filled with pretreatment medium water; the heat-conducting flue pipe 4 can be one or several, made of materials that can resist flue gas corrosion; the flue gas channel baffle 7 can be one or several , It is made of materials that can resist flue gas corrosion; the vacuum steam generator can be equipped with a steam output pipe 2 and a water return pipe 1, or it can be directly installed in the vacuum steam generator.