초록 ▼

An efficiency improving apparatus (A) improves the combustion efficiency of a combustion apparatus (B) which includes a combustion chamber (10), a fuel supply rate regulator (32), an air supply rate regulator (42) and a combustion control (20) to control the fuel supply rate in response to firing ra

An efficiency improving apparatus (A) improves the combustion efficiency of a combustion apparatus (B) which includes a combustion chamber (10), a fuel supply rate regulator (32), an air supply rate regulator (42) and a combustion control (20) to control the fuel supply rate in response to firing rate demands and to control the air supply rate in relation to the fuel supply rate so that a preselected program of combustion conditions will be maintained during random variations in air and fuel quality, as well as during rapid changes in firing rate. The efficiency improving apparatus is connected between the combustion control and the air regulator to alter the air-fuel volume relationship by a percentage. The efficiency improving apparatus includes an exhaust gas analyzer (70), a comparator (72) for comparing the exhaust gas analysis with a preselected analysis, and an air-fuel ratio adjusting device for adjusting the set air-fuel volume relationship by the percentage in response to a difference between the exhaust gas and preselected analyses. The air-fuel ratio adjusting device includes a first shaft (80) which is rotated by the combustion control, a second shaft (84) which rotates to control one of the air and fuel supply regulators, preferably the air supply regulator, a continuously variable transmission (76) which interconnects the first and second shafts with an effective gear ratio such that angular displacement of the first shaft causes a corresponding angular displacement of the second shaft. The continuously variable transmission includes an angular displacement linkage (104) for causing a corresponding angular displacement of the first and second shafts with an effective gear ratio and a ratio adjusting device (106) which adjusts the effective gear ratio, hence the air-fuel volume relationship, by the percentage in response to the difference in the exhaust gas and preselected analyses.

대표청구항 ▼

A combustion apparatus comprising: at least one combustion chamber adapted to oxidize fuel to produce heat and oxidation by-products at least partially in the form of exhaust gases; a fuel supply for supplying fuel to said combustion chamber, said fuel supply including a fuel regulator for regulatin

A combustion apparatus comprising: at least one combustion chamber adapted to oxidize fuel to produce heat and oxidation by-products at least partially in the form of exhaust gases; a fuel supply for supplying fuel to said combustion chamber, said fuel supply including a fuel regulator for regulating the rate at which fuel is supplied to the combustion chamber; an air supply for supplying air to said combustion chamber, said air supply including an air regulator for regulating the rate at which air is supplied to the combustion chamber; a combustion control for controlling the combustion firing rate including controlling the fuel supply rate at which fuel is supplied to the combustion chamber and controlling the air supply rate at which air is supplied to the combustion chamber, said combustion control constraining said fuel supply rate and said air supply rate to a predetermined air-fuel volume relationship, said combustion control including a jackshaft, means for controlling angular displacement of the jackshaft in accordance with a selected combustion chamber load, a mechanical linkage means at least connecting the jackshaft with one of the fuel regulator and the air regulator; an exhaust gas analyzer for analyzing at least a part of exhaust gases from the combustion chamber; a comparing means for comparing results of the exhaust gas analysis with a preselected analysis and producing a difference signal indicative of a difference between the exhaust gas analysis and the preselected analysis; a first rotatable shaft, the mechanical linkage means further connecting the jackshaft with the first shaft such that the first shaft is angularly displaced with angular displacement of the jackshaft to an angular position corresponding to the controlled combustion firing rate; a second rotatable shaft which is connected by the mechanical linkage means with one of the fuel regulator and the air regulator for controlling the supply rate of said one of the fuel and air supply in accordance with the angular position of the second shaft such that the fuel flow and airflow to the combustion chamber are constrained mechanically to a set air-fuel volume relationship and such that rotating the jackshaft changes the fuel and air supply rates while maintaining for each firing rate the preselected relationship between oxygen supplied for combustion and the supplied combustibles requirement for oxygen in the combustion process; an angular displacement means connected with the first and second shafts such that angular displacement of the first shaft causes a corresponding angular displacement of the second shaft, the angular displacement means having an effective gear ratio which defines the correspondence between the angular displacement of the first and second shafts; means for altering said predetermined air-fuel relationship by a selected percentage over all combusion firing rates and fuel supply rates, including a ratio adjusting means for adjusting the gear ratio between the first and second shafts by a percentage to alter said predetermined air-fuel relationship by a percentage, the ratio adjusting means being operatively connected with the angular displacement means and the comparing means for adjusting the gear ratio in response to a difference betwen the exhaust gas analysis and the preselected analysis at preselected firing rates to alter said predetermined air-fuel relationship in response to the comparison of the exhaust gas analysis with the preselected analysis such that the predetermined air-fuel relationship is altered by the same percentage over all combustion firing rates and fuel supply rates; and, means for delivering the difference signal from the comparing means to the ratio adjusting means.