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A stove for solid fuel, with sensor controlled, motor driven adjustment means for respective different types of intake air and with a control unit which is programmable for selective control of the adjustment means in order to optimise the combustion under various operational conditions, in particul

A stove for solid fuel, with sensor controlled, motor driven adjustment means for respective different types of intake air and with a control unit which is programmable for selective control of the adjustment means in order to optimise the combustion under various operational conditions, in particular during a lighting up phase, an operative phase of high or low effect, a refiring phase, and a burn-out phase.

대표청구항 ▼

1. Stove of the kind which is provided with sensor-controlled means of regulation for the intake of combustion air with the object of maintaining a desired temperature level, wherein a control equipment for the stove is arranged to work in accordance with different, selected control algorithms under

1. Stove of the kind which is provided with sensor-controlled means of regulation for the intake of combustion air with the object of maintaining a desired temperature level, wherein a control equipment for the stove is arranged to work in accordance with different, selected control algorithms under various operational conditions, characterized in that, particularly during a lighting-up phase, an operative phase at high or low effect, a re-firing phase and a burn-out phase, separate air intakes are provided for primary and secondary air and also for tertiary air, and that, in these intakes, there are provided dampers which can be regulated individually, which enables a selective and graduated throttling of each of the air intakes according to various operational conditions; and is further provided with a combustion chamber bounded on one side by a vertical wall, an air channel formed between said vertical wall and a vertical outer shield wall, said air channel having a main air intake opening at a bottom part thereof for drawing outside air into the air channel, wherein the air intake for primary air is located to deliver air from said air channel through a lower area of said vertical wall into a lower part of said combustion chamber, the air intake for tertiary air is located to deliver air from said air channel through an intermediate area of said vertical wall into said combustion chamber and said air intake for secondary air is located to deliver air from said air channel through an upper area of said vertical wall for delivery to said combustion chamber. 2. Stove according to claim 1, where, in a sensed or start-marked lighting-up phase, the air intakes are fully opened until a pre-set temperature is detected, after which the dampers are throttled down for air intake over a predetermined period of time, after which the air intake is further reduced for changeover to operative conditions. 3. Stove according to claim 1, whereby means are provided for the detection or keying-in of the "re-firing" phase, and in that this results in an increase in the supply of intake air over a predetermined period of time, or until it is registered that the desired effect has been achieved, depending on a prior registration by the sensor-controlled means of regulation of falling flue gas temperature. 4. Stove according to claim 1, whereby, in said burn-out phase, the sensor-controlled means of regulation brings about a strong throttling down of the intake air, depending on a registration of a fall in temperature to a predetermined level. 5. Stove according to claim 1, whereby maximum down-throttling of the air is effected depending on a detected burning-out of the stove. 6. Stove according to claim 1, whereby, after the lighting-up phase, the secondary air is throttled down and also the tertiary air for changeover to operative control, while the supply of primary air is throttled down to a low value during said warming-through phase, after which this supply is closed. 7. Stove according to claim 1, whereby only the supply of secondary air is increased during the re-firing phase. 8. Stove according to claim 4, wherein the supply of tertiary air is throttled down completely, while a slight intake of secondary air is maintained until bum-out is detected. 9. Stove according to claim 1, whereby, during an operative phase, the tertiary air is controlled either on the basis of a measurement of the oxygen in the discharge gas, or by predetermined damper positions during operation of the stove at respective different effect levels. 10. Stove according to claim 1, wherein a door with a glass window is located on an opposite side of said combustion chamber from said vertical wall, and wherein said air intake for secondary air communicates with an upper channel extending across an upper end of the combustion chamber, said upper channel having an outlet arrange to cause the secondary air to flush an inner surface of said glass window.