What is the function of the venturi in a gas burner?

The primary function of the venturi in a gas burner is to mix air and fuel before combustion, which is crucial for achieving an efficient and complete burn. The venturi effect refers to a phenomenon where a fluid's velocity increases as it passes through a constricted section of pipe, which reduces its pressure. In the context of a gas burner, as gas flows through the venturi, it creates a vacuum that draws in air. This mixing of air with gas ensures that the mixture is at the correct ratio for optimal combustion, leading to better efficiency and reduced emissions.

This combustion process needs precisely mixed air and fuel for a stable flame and efficient energy use. Inadequate mixing can lead to incomplete combustion, resulting in a yellow flame, increased carbon monoxide production, and wasted fuel. Therefore, the venturi is an essential component in ensuring that the burner operates effectively.