Air-fuel gas proportion adjusting device

Abstract

The invention provides an air-fuel gas proportion adjusting device. The air-fuel gas proportion adjusting device comprises an air adjusting valve communicating with an air inlet and a fuel gas adjusting valve communicating with a fuel gas inlet, the air adjusting valve is provided with an air adjusting valve body, an air inlet is formed in the air adjusting valve body, an air cavity is formed in the air adjusting valve body, an inner casing pipe communicating with a mixing pipe is arranged in the air cavity, an air adjusting valve element is arranged on the inner casing pipe, the fuel gas adjusting valve is provided with a fuel gas adjusting valve body, a fuel gas inlet is formed in the fuel gas adjusting valve body, a fuel gas cavity is formed in the fuel gas adjusting valve body, an inner casing pipe communicating with the mixing pipe is arranged in the fuel gas cavity, a fuel gas adjusting valve element is arranged on the inner casing pipe, the air adjusting valve and the fuel gas adjusting valve are linear adjusting valves, through the precise gear ratio of a gear set, the opening degrees of the air adjusting valve element and the fuel gas adjusting valve element can be controlled, the mixing proportion of air and fuel gas can be controlled, combustion is sufficient and stable, the optimal combustion effect is achieved, energy is saved, and losses are reduced.

Description

technical field [0001] The invention belongs to the technical field of burners, and more specifically relates to an air-fuel ratio regulating device. Background technique [0002] The air-fuel ratio adjustment device is the main component of the burner, which is mainly used to control the mixing ratio of air and natural gas. There are two main ways to adjust the air-fuel ratio of the existing gas. One way is to install an air-fuel proportional valve on the natural gas inlet pipe, and through the pressure change of one gas, it is fed back to the air-fuel proportional valve to adjust the pressure of the other gas. Intake volume, this method has problems such as pressure feedback lag and is greatly affected by pressure fluctuations. Another method is to simultaneously adjust the opening of the two gas valves through a linkage rod. In the adjustment process of this method, there are problems such as air-fuel ratio changes and flow nonlinear changes. Contents of the invention ...

AI Technical Summary

Problems solved by technology

There are two main ways to adjust the air-fuel ratio of the existing gas. One way is to install an air-fuel proportional valve on the natural gas inlet pipe, and through the pressure change of one gas, it is fed back to the air-fuel proportional valve to adjust the pressure of the other gas. Intake volume, this method has problems such as pressure feedback lag and is greatly affected by pressure fluctuations

Another way is to adjust the opening of the two gas valves at the same time through the linkage rod. In the adjustment process of this way, there are problems such as air-fuel ratio changes and flow nonlinear changes.

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