Output power control method of combustion apparatus

Abstract

The invention relates to an output power control method of a combustion apparatus for realizing continuous or segmental one key adjustment or automatic adjustment of the output power, meeting requirement of different heating loads when in operation and ensuring full and stable burning in the adjusting and heating process. By presetting combustion-supporting air amount and detecting combustion-supporting air flow rate, the fuel metering supplying is controlled according to the optimal air-fuel ratio requirement by utilizing the detecting result, fuel mixed combustion is provided accurately, and the fuel duty is changed along with the combustion-supporting air amount, and the output power of the combustion apparatus can be adjusted by only adjusting the combustion-supporting air amount, the operation is convenient, the combustion has high efficiency, the usage is safe and the operation is reliable.

Description

technical field [0001] The invention relates to a method for controlling the output power of a combustion device for heating, which is to preset and detect the amount of combustion-supporting air, then supply fuel with an appropriate air-fuel ratio according to the detected air amount, and finally realize the output power of the combustion device at full Under combustion conditions, it can be adjusted continuously or in sections. Background technique [0002] At present, in many heating processes, the output power of the combustion device must be adjusted to meet different requirements. For example, in cooking operations, the operator needs to adjust the output power (firepower) of the combustion device to adapt to steaming, boiling, frying, frying, frying, etc. Different cooking operations to obtain superior cooking results; the constant temperature hot water boiler needs to reduce the output power (firepower) of the combustion device when the water temperature is higher th...

AI Technical Summary

Problems solved by technology

The defect of Patent Document 1 is that the test shows that, by controlling the speeds of the respective motors of the oil pump and the fan, and synchronously adjusting the output fuel volume and air volume in proportion, the change of the air volume lags behind the change of the oil volume during the adjustment process, forming a de facto air volume. The oil ratio deviates from the design value. As a result, when the output power of the combustion device changes from small to large, the fuel supply increases faster than the air volume supply, resulting in insufficient combustion and polluting the environment; when the output power of the combustion device changes from large to small, the fuel supply decreases. Faster than the air volume supply decreases, the combustion is in a state of lean combustion, and even leads to flameout

The control method proposed in Patent Document 2 does not include metering control of fuel and combustion-supporting air according to environmental conditions, and cannot control and adjust the "air-fuel ratio" within the entire firepower adjustment range, and cannot achieve full power (firepower) adjustment range. combustion

[0005] In short, in the prior art, there is no output power control method for supplying fuel according to the "air-fuel ratio" by presetting and detecting the mass flow rate of combustion-supporting air

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