Energy-saving and environment-friendly gas wall-hung boiler combustion system

Abstract

The invention discloses an energy-saving and environment-friendly type combustion system of a gas wall-hanging stove. The combustion system of the gas wall-hanging stove comprises an air and gas mixing entering device (1). The air and gas mixing entering device (1) is connected with an inverted combustion heat exchanger (2). A smoke outlet of the inverted combustion heat exchanger (2) is connected with a smoke discharge pipeline body (3) for discharging and conveying smoke. An exhaust fan (31) is arranged on the smoke discharge pipeline body (3). A condensate water drainage opening (32) is formed in the smoke discharge pipeline body (3). The energy-saving and environment-friendly type combustion system is simple in structure, high in practicality, low in cost and convenient to mount and maintain; by means of combined air exhaust of the exhaust fan and a draught fan and an air inducing hood, the circulating speed of air can be increased; by means of increasing of the circulating speed of air, combustion hot air flow can be effectively prevented from flowing back into an air inlet channel, and stove body noise caused by backflow of combustion expansion gas is avoided; and meanwhile heat exchange efficiency is greatly improved.

Description

technical field [0001] The invention and a gas circulation device specifically relate to an energy-saving and environment-friendly gas wall-hung boiler combustion system. Background technique [0002] 1. At present, the combustion heat exchanger of the gas wall-hung boiler is installed upside down, that is, the combustion bottom above the combustion heat exchanger discharges the flue gas, and its exhaust port is flat and small. Since the combustion chamber of the combustion heat exchanger is on the top, When it burns, the flame and smoke go up, but when it burns, the smoke exhaust port of the combustion heat exchanger is set at the bottom, and the smoke exhaust method can only go from top to bottom. In the principle of heat, hot gas and hot smoke are Going up, forming the opposite smoke exhaust method, the combustion chamber is sealed, the gas enters the combustion chamber from above the combustion chamber, ignites and burns in the combustion chamber, the firepower is too co...

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Problems solved by technology

[0002] 1. At present, the combustion heat exchanger of the gas wall-hung boiler is installed upside down, that is, the combustion bottom above the combustion heat exchanger discharges the flue gas, and its exhaust port is flat and small. Since the combustion chamber of the combustion heat exchanger is on the top, When it burns, the flame and smoke go up, but when it burns, the smoke exhaust port of the combustion heat exchanger is set at the bottom, and the smoke exhaust method can only go from top to bottom. In the principle of heat, hot gas and hot smoke are Going up, forming the opposite smoke exhaust method, the combustion chamber is sealed, the gas enters the combustion chamber from above the combustion chamber, ignites and burns in the combustion chamber, the firepower is too concentrated in the combustion chamber, and the gas burns instantly in the combustion chamber During this period, a large amount of expanding hot air flow will be generated. The smoke exhaust port of the combustion heat exchanger is set at the bottom and the smoke exhaust port is too small. In the gas channel, the firepower in the lower section is insufficient, the heat is small, and the heating is insufficient, resulting in low heat transfer efficiency and low heat conversion rate of the water flow in the lower section of the combustion heat exchanger; 2. In the continuous combustion process, repeated 3. During the instant combustion of the combustion chamber of the combustion heat exchanger, a fireball will be formed, and part of the gas cannot be fully burned instantly, resulting in hydrogen , carbon monoxide, methane emissions are large, causing air pollution; 4, the existing gas full premixing technology gas and air mixing, all use Venturi tube to supply fuel mixing technology, but due to the large volume of the Venturi tube, the arrangement The air inlet area of ​​the fan is occupied at the fan port, resulting in a decrease in the air intake efficiency of the fan, poor premixing effect, too thick a mixture, and low efficiency

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