COMBUSTION DEVICE FOR IMPROVING TURNDOWN RATIO

摘要

The purpose of the present invention is to provide a combustion device for improving a turndown ratio, which is capable of stably implementing a combusted state in a low-output load region by improving a turndown ratio of a burner. To this end, the present invention provides the combustion device having a premixing chamber (300) which is connected to an air supply tube (100) and a gas supply tube (200), and which has a space for premixing air and gas provided therein, wherein the space for premixing the air and gas supplied from the air supply tube (100) and the gas supply tube (200) is divided into multiple stages of a venturi structure in the premixing chamber (300), and the discharging direction of the gas discharged inside the premixing chamber (300) through the gas supply tube (200) is formed in parallel to the flow direction of the gas supplied inside the premixing chamber (300) through the air supply tube (100).

主权项

1. A combustion device for improving a turndown ratio, the device comprising:
a premixing chamber (300) connected to a air supply tube (100) and a gas supply tube (200), the premixing chamber (300) having a inner space in which air and gas for combustion are mixed with each other, wherein the inner space of the premixing chamber (300), in which the air and gas supplied through the air supply tube (100) and the gas supply tube (200) are mixed with each other is divided into a multiple-stage venturi structure, and the gas discharged into the premixing chamber (300) through the gas supply tube (200) is discharged in parallel to a flow direction of the air supplied into the premixing chamber (300) through the air supply tube (200).