JPH0449742U

JPH0449742U -

Info

Publication number: JPH0449742U
Application number: JP8922490U
Authority: JP
Priority date: 1990-08-28
Filing date: 1990-08-28
Publication date: 1992-04-27

Description

[Brief explanation of drawings]

第１図は本考案の一実施例のブロツク図、第２
図ないし第４図は同実施例の作用説明図、第５図
は従来例の構成ブロツク図である。１ｓ……ボイラ入力指令信号、２ｓ……水燃比
信号、３ｓ……ボイラ入力加速信号、４ｓ……燃
焼量指令信号、２……第１の加算器、３……第２
の加算器、４……第１の関数発生器、５……燃料
流量制御回路、６……空燃比制御回路、７……バ
ーナ入口圧力検出器、８……第１の補正回路、９
……第２の補正回路、１０ｓ……バーナ点・消火
時の水燃比信号補正信号、１０……第２の関数発
生器、１１……切換器、１２……第１の増幅器、
１３……第２の増幅器、１４……第１の乗算器、
１５……第２の乗算器。 Fig. 1 is a block diagram of an embodiment of the present invention;
4 through 4 are explanatory views of the operation of the same embodiment, and FIG. 5 is a block diagram of the configuration of the conventional example. 1s...Boiler input command signal, 2s...Water-fuel ratio signal, 3s...Boiler input acceleration signal, 4s...Combustion amount command signal, 2...First adder, 3...Second
adder, 4...first function generator, 5...fuel flow rate control circuit, 6...air-fuel ratio control circuit, 7...burner inlet pressure detector, 8...first correction circuit, 9
...Second correction circuit, 10s...Water-fuel ratio signal correction signal at burner point/extinguishing, 10...Second function generator, 11...Switcher, 12...First amplifier,
13... second amplifier, 14... first multiplier,
15...Second multiplier.

Claims

[Scope of utility model registration request]

A first adder that inputs a boiler input command and a water-fuel ratio signal, a second adder that inputs an output of the first adder and a boiler input acceleration signal, and a second adder that receives the output of the second adder. A first function generator that outputs a fuel command signal, a fuel flow control circuit that receives the output of the function generator and controls the fuel flow rate, and an air-fuel ratio control circuit that receives the output of the function generator and controls the air-fuel ratio. a burner inlet pressure detector for detecting burner fuel inlet pressure; and a first burner inlet pressure detector for receiving an output from the inlet pressure detector.
a first correction circuit that changes the output according to the number of ignition stages of the burner when the burner is ignited; a first multiplier that receives the output of the correction circuit and the output of the first amplifier; a second amplifier that receives the output of the inlet pressure detector; a second correction circuit that changes the output according to the number of ignition stages of the burner when the burner is extinguished; the output of the correction circuit; and the output of the second amplifier. a second multiplier that receives the outputs of the first and second multipliers and outputs the outputs of the first and second multipliers depending on when the burner is ignited and extinguished, respectively; a second function generator which receives the output of the boiler and generates a predetermined function and inputs the generated function to the second adder.