Apparatus for automatic correction of the positioning control of a burner

Claim 2

Apparatus for automatically correcting the ratio between the volumetric combustion air flow and the volumetric fuel flow of a burner, including an air-valve for regulating the combustion air flow, the extent of the opening of which valve is controlled automatically by a positioning control device having cams and pivoted arms which simultaneously vary the volumetric flows of fuel and combustion air in a constant ratio, which apparatus includes a reflection opacimeter comprising a light source and a pHotoelectric receiver sensing a light bundle emitted by the light source and reflected by the combustion fumes, which opacimeter delivers an electric signal proportional to the opacity of the combustion fumes, and which apparatus includes a servomechanism for automatically varying a dimension of at least one of the said arms as a function of the said electric signal.

Claim 3

Apparatus for automatically correcting the ratio between the volumetric combustion air flow and the volumetric fuel flow of a burner, including an air-valve for regulating the combustion air flow, the extent of the opening of which valve is controlled automatically by a positioning control device having cams and pivoted arms which simultaneously vary the volumetric flows of fuel and combustion air in a constant ratio, which apparatus includes a reflection opacimeter comprising a light source and a photoelectric receiver sensing a light bundle emitted by the light source and reflected by the combustion fumes, which opacimeter delivers an electric signal proportional to the opacity of the combustion fumes, and which apparatus includes an electric ram of variable length having two operating directions, which ram forms a portion of the length of one of the said arms, and is operated by said electric signal.

Claim 4

Apparatus for automatically correcting the ratio between the volumetric combustion air flow and the volumetric fuel flow of a burner, including an air-valve for regulating the combustion air flow, the extent of the opening of which valve is controlled automatically by a positioning control device having cams and pivoted arms which simultaneously vary the volumetric flows of fuel and combustion air in a constant ratio, which apparatus includes a reflection opacimeter comprising a light source and a photoelectric receiver sensing a light bundle emitted by the light source and reflected by the combustion fumes, which opacimeter delivers an electric signal proportional to the opacity of the combustion fumes, and which apparatus includes an electric ram of variable length having two operating directions, which ram forms a portion of the length of one of the said arms, and is operated by said electric signal.

Claim 5

Apparatus for automatically correcting the ratio between the volumetric combustion air flow and the volumetric fuel flow of a burner, including an air-valve for regulating the combustion air flow, the extent of the opening of which valve is controlled automatically by a positioning control device having cams and pivoted arms which simultaneously vary the volumetric flows of fuel and combustion air in a constant ratio, which apparatus includes an opacimeter which delivers an electric signal proportional to the opacity of the combustion fumes and a servomechanism for automatically lengthening or shortening of at least one of the said arms as a function of the said electric signal, which servomechanism comprises an electric ram of variable length having two operating directions, forming a portion of the length of one of the said arms and an apparatus for measuring the said electric signal delivered by the opacimeter, which apparatus has two adjustable thresholds arranged on either side of a median position and determines the lengthening of the said ram when one of the thresholds is exceeded and the shortening of the said ram when the other threshold is exceeded.

Claim 6

Apparatus for automatically correcting the ratio between the volumetric combustion air flow and the volumetric fuel flow of a burner, including an air-valve for regulating the combustion air flow, the extent of the opening of which valve is controlled automatically by a positioning control device having cams and pivoted arms which simultaneously vary the volumetric flows of fuel and combustion air in a constant ratio, which apparatus includes an opacimeter which delivers an electric signal proportional to the opacity of the combustion fumes and a servomechanism for automatically lengthening or shortening of at least one of the said arms as a function of the said electric signal, which servomechanism comprises an electric ram of variable length having two operating directions, forming a portion of the length of one of the said arms and an apparatus for measuring the said electric signal delivered by the opacimeter, which apparatus has two adjustable thresholds arranged on either side of a median position and determines the lengthening of the said ram when one of the thresholds is exceeded and the shortening of the said ram when the other threshold is exceeded.

Claim 7

Apparatus in accordance with claim 3, in which a cyclic circuit breaker is inserted between the said measuring apparatus and the said ram.

Claim 8

Apparatus for automatically correcting the ratio between the volumetric combustion air flow and the volumetric fuel flow of a burner, including an air-valve for regulating the combustion air flow, the extent of the opening of which valve is controlled automatically by a positioning control apparatus having cams and pivoted arms which simultaneously vary the volumetric flows of fuel and combustion air in a constant ratio, which apparatus includes an opacimeter which delivers an electric signal proportional to the opacity of the combustion fumes, and a servomechanism for automatically varying a dimension of at least one of the said arms as a function of the said electrical signal, and in which the said air-valve for regulating the flow of combustion air has two circuit-breakers on which the said air-valve acts when it reaches its wide open or completely closed positions, respectively, which circuit-breakers are inserted in the electric control circuitry of the said servo-mechanism.

Claim 9

Apparatus for automatically correcting the ratio between the volumetric combustion air flow and the volumetric fuel flow of a burner, including an air-valve for regulating the combustion air flow, the extent of the opening of which valve is controlled automatically by a positioning control apparatus having cams and pivoted arms which simultaneously vary the volumetric flows of fuel and combustion air in a constant ratio, which apparatus includes an opacimeter which delivers an electric signal proportional to the opacity of the combustion fumes, and a servomechanism for automatically varying a dimension of at least one of the said arms as a function of the said electrical signal, and in which the said air-valve for regulating the flow of combustion air has two circuit-breakers on which the said air-valve acts when it reaches its wide open or completely closed positions, respectively, which circuit-breakers are inserted in the electric control circuitry of the said servo-mechanism.

Claim 10

Apparatus for automatically correcting the ratio between the volumetric combustion air flow and the volumetric fuel flow of a burner, including an air-valve for regulating the combustion air flow, the extent of the opening of which valve is controlled automatically by a positioning control device having cams and pivoted arms which simultaneously vary the volumetric flows of fuel and combustion air in a constant ratio, which apparatus includes a reflection opacimeter comprising a light source and a photoelectric receiver sensing a light bundle emitted by the light source and reflected by the combustion fumes, which opacimeter delivers an electric signal proportional to the opacity of the combustion fumes, and which apparatus includes an electric ram of variable length having two operating directions, which ram forms a portion of the length of one of said arms and is operated by said electric signal, which apparatus includes an apparatus for measuring the said electric signal delivered by the opacimeter which measuring apparatus has two adjustable thresholds arranged on either side of a median position, and determines the extension of the said ram when one of the thresholds is exceeded, and the shortening of the said ram when the other threshold is exceeded.

Claim 11

Apparatus for automatically correcting the ratio between the volumetric combustion air flow and the volumetric fuel flow of a burner, including an air-valve for regulating the combustion air flow, the extent of the opening of which valve is controlled automatically by a positioning control device having cams and pivoted arms which simultaneously vary the volumetric flows of fuel and combustion air in a constant ratio, which apparatus includes a reflection opacimeter comprising a light source and a photoelectric receiver sensing a light bundle emitted by the light source and reflected by the combustion fumes, which opacimeter delivers an electric signal proportional to the opacity of the combustion fumes, and which apparatus includes an electric ram of variable length having two operating directions, which ram forms a portion of the length of one of said arms and is operated by said electric signal, which apparatus includes an apparatus for measuring the said electric signal delivered by the opacimeter which measuring apparatus has two adjustable thresholds arranged on either side of a median position, and determines the extension of the said ram when one of the thresholds is exceeded, and the shortening of the said ram when the other threshold is exceeded.

Claim 12

Apparatus in accordance with claim 6, in which a cyclic circuit breaker is inserted between the said measuring apparatus and the said ram.

Claim 13

Apparatus for automatically correcting the ratio between the volumetric combustion air flow and the volumetric fuel flow of a burner, including an air-valve for regulating the combustion air flow, the extent of the opening of which valve is controlled automatically by a positioning control device having cams and pivoted arms which simultaneously vary the volumetric flows of fuel and combustion air in a constant ratio, which source and a photoelectric receiver sensing a light bundle emitted by the light source and reflected by the combustion fumes, which opacimeter delivers an electric signal proportional to the opacity of the combustion fumes, and which apparatus includes an electric ram of variable length having two operating directions, which ram forms a portion of the length of one of said arms, and is operated by said electric signal, which apparatus includes an apparatus for measuring the said electric signal delivered by the opacimeter, which measuring apparatus has two adjustable thresholds arranged on either side of a median position, and determines the extension of the said ram when one of the thresholds is exceeded, and the shortening of the said ram when the other threshold is exceeded, in which apparatus the said air-valve for regulating the flow of combustion air has two circuit-breakers on which the said air-valve acts when it reaches its wide open or completely closed positions respectively, which circuit-breakers are inserted in the electric control circuitry of the said ram.

Claim 14

Apparatus for automatically correcting the ratio between the volumetric combustion air flow and the volumetric fuel flow of a burner, including an air-valve for regulating the combustion air flow, the extent of the opening of which valve is controlled automatically by a positioning control device having cams and pivoted arms which simultaneously vary the volumetric flows of fuel and combustion air in a constant ratio, which source and a photoelectric receiver sensing a light bundle emitted by the light source and reflected by the combustion fumes, which opacimeter delivers an electric signal proportional to the opacity of the combustion fumes, and which apparatus includes an electric ram of variable length having two operating directions, which ram forms a portion of the length of one of said arms, and is operated by said electric signal, which apparatus includes an apparatus for measuring the said electric signal delivered by the opacimeter, which measuring apparatus has two adjustable thresholds arranged on either side of a median position, and determines the extension of the said ram when one of the thresholds is exceeded, and the shortening of the said ram when the other threshold is exceeded, in which apparatus the said air-valve for regulating the flow of combustion air has two circuit-breakers on which the said air-valve acts when it reaches its wide open or completely closed positions respectively, which circuit-breakers are inserted in the electric control circuitry of the said ram.