Mechanical stove air-fuel ratio control device and valve path tapping method thereof

Abstract

The invention belongs to the technical field of stove air-fuel ratio control, and particularly relates to a mechanical stove air-fuel ratio control device and a valve path tapping method thereof. The device comprises a main air pipe, a flow dividing pressure relief pipe is arranged on the side wall of the main air pipe, a sealing plate is arranged at the air outlet end of the flow dividing pressure relief pipe, and an air relief hole communicating with the flow dividing pressure relief pipe and a pipe cavity of the main air pipe is formed in the sealing plate in a penetrating mode; and the device further comprises a flow dividing baffle attached to the sealing plate face, and therefore the air flux of the air leakage holes is adjusted through the transverse movement or rotation action of the flow dividing baffle relative to the air leakage holes in the sealing plate. The device not only can meet the requirement for accurate air-fuel ratio adjustment under different fire powers, but also has the advantages of being simple and compact in structure, reliable and stable in work, long in service life and low in cost. The other purpose of the invention is to provide a valve path tapping method based on the mechanical stove air-fuel ratio control device, so that the working reliability of the flow dividing pressure relief pipe is realized specifically through a simple and rapid mechanical tapping mode.

Description

technical field [0001] The invention belongs to the technical field of stove air-fuel ratio control, and in particular relates to a mechanical stove air-fuel ratio control device and a valve circuit opening method thereof. Background technique [0002] In order to improve the combustion efficiency of commercial stoves, an appropriate air-fuel ratio is extremely critical. The domestic commercial stove industry usually adopts the following operation methods: ① Independently adjust the flow of gas and air volume. The disadvantage of this method is that the air-fuel ratio cannot be adjusted accurately and the operation is inconvenient. ②The gas valve at the gas valve and the damper in the main air duct are adjusted through chain wheel adjustment or coaxial synchronous linkage adjustment, so as to achieve the purpose of synchronous linkage action of the damper by twisting the valve. This control method is widely used. Its advantage is that it can realize the related adjustment o...

AI Technical Summary

Problems solved by technology

This control method is widely used. Its advantage is that it can realize the related adjustment of stove firepower and air volume at the same time with one action; Synchronous rotation is also a fixed value, so it cannot meet the demand for precise air-fuel ratio adjustment in a wide range of firepower

③The air volume can be regulated through the frequency conversion speed regulation of the fan AC motor to meet the precise air-fuel ratio under different firepower; but due to the high cost, the frequency conversion speed regulation of the single-phase AC motor with low voltage and low power is uneconomical, and the market application rarely

Due to its technical principle, it has the disadvantages of high cost and the inability to adjust the air-fuel ratio characteristic curve, and it must be maintained once a year, and the workload of after-sales service is relatively large.

This also limits its application

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