Патент USA US2113831код для вставки
$3 April 12, ‘19381., 2,113,831 H. DUPUY COMBUSTION APPARATUS Filed May '17, 1955 i I INVENTO/Q M's/vet. Eu/wy ' ‘BY maid Y A’ T702 NE Y5 Patented Apr. 12, 1938 _ 2,113,831 UNITED STATES12,112,831PATENT OFFICE COMBUSTION APPARATUS Henri Dupuy, Paris, France Application May 17, 1935, Serial No. 21,922 - In Belgium June 15, 1934 2 Claims. 1 I’ This invention hasfor its object 'a process of ' combustion which is characterized by the utili 10 (Cl. 110—-32) combustion. apparatus for the execution of the process according to the present invention. The apparatus illustrated in Fig. 1 comprises a hopper T containing the fuel which may fall Zationof the effects of gravity for automatically feeding a furnace by means of a thin layer of fuel and also by the relative displacement of . from a regulatable slide S upon the inclined plane the ignition zone with respect to the mass of A, which is provided with ?ve blast slots for burnt'products. This makes it possible to have example O1--O5 which are fed by one and the very long intervals of time beeween each removal same air box V. ' of said mass of burnt products. At the beginning the slot 01 only is open and ‘According to a ?rst form of operation, the the ignition takes place at the lower part of the present process consists in causing the ignited apparatus. zone to move gradually upwardly to the top of In order to cause the gasi?cation of the'com the furnace so as to leave the mass of clinker ' bustible and the production of solid clinker the stationary. ' - ' ‘ temperature is caused to rise to a very high de ' Thelapparatus which is employed in this ?rst form of operation is characterized by a fuel dis‘ charge inclined surface provided with a plurality of air inlet openings which open successively from the bottom 'up'wardly, the admission of air 20 through the lower openings being interrupted 15 when the coal in front of them has been com , 'pletely replaced by the clinker. ' This invention has also for its object a modi ?ed form of operation characterized by a solid 25. inclined surface upon which oneor more mov able air blast nozzles move upwardly in the midst of the coal. ‘In another form of operation the combustion process according to the present invention con 30 sists in making the ignited zone stationary and moving away the block of ashes and clinker pro‘ gressively ‘downwardly. I ,With this object in view according to a pre I gree by means of a very strong or forced draught 15 preferably by means of the primary air which has been pre-heated in the combustion ‘appara tus itself this not being prejudicial to the output considering that the calories taken out are given back‘ and that'mechanical power may conse quently be dispensed with. The coal burning in front of the slot 01 pro duces gases which will be utilized further on after the adjunction of secondary air upon a stack for instance and also produce a clinker which settles under the action of the coal stream which is fed by gravity from the hopper T. The clinker remaining stationary this ?rst zone then becomes inoperative, the opening .01 closes and the opening 02 opens in the manner hereinafter indicated. The ?re will consequently be in front of 02. The fuel will continue to feed the ?re in front of 02 until 03 opens, the zone 02 becoming v'ferred form of operation, the apparatus com inoperative and so on until the ?re which is now prises a stationary air inlet nozzle at the upper end of the inclined surface and a check shield for the ashesand clinker which is movable upon at O5 is still fed from the hopper and the lower 35 part of the inclined surface is covered over with ' said surface. The driving means whichoperate the opening and closing of the nozzle or primary inlet slots and the displacement of the nozzle or the dis— ', placement of the check shield for the clinker is advantageously operated automatically by the intermediary of devices provided with a photo electric cell or a thermostat and the like as. hereinafter will be described byway of example. The invention allows also in every case the use of cold or hot air taken from the apparatusit self instead of injected air, in order to avoid the clinker. _ At that moment the cake of clinker may be taken out after opening the door P and taking out the bar B care being taken to close the slide 40 S. The fire will be kept up in front of 01 when putting back the bar B; then the door P is closed and the slide S is opened so that the coal will then cover the inclined plane; 01 will again be opened, 05 will be closed and the operation be ' gins again. Supposing the distance from O1 to O5 to be 2 meters, the width of the apparatus to be 1' meter and the coal layer to be .1 meter, the use of mechanical power and of obtaining a volume of the clinker cake would be .2 cubic higher temperature of the furnace which facili meter and consequently would weigh at least tates the production of clinker and of gas. Figs. 1 and 2 of the appended drawing are ' sectional diagrammatical views which show by‘ iway of examples two forms of operation of a 200 kgs. 7 If the residues of combustion are 10% this gives a net weight of 2,000 kgs. for 20 days work ing and a daily consumption of 100 kgs. 45 2,113,831 2 In that case the apparatus is therefore com— pletely self-acting for a period of 20 days. The primary air may be brought to the nozzle by means of pivoted arms and corresponding joints. The above described process in which the spent products are removed from the combustion zone by moving back their support may be applied to all systems of gas producers, with the result of considerably increasing their life without requir Fig. 2 of the appended drawing illustrates a ing any cleaning and interruption of service; a modi?ed form of construction of the apparatus in which V is the air box along the upper edge mission of air according to the required working. of which may be placed a water circulationrtube 10 t designed to prevent corrosion and deterioration by the clinker. The shield B which is supported by means of a bar passing through the door P may move back progressively when the incom bustible mass of ashes and clinker M tends to ob 15 struct the admission of air. The operation will proceed until the shield B reaches the door P. At that moment the door having been opened the clinker mass will be removed and the shield moved upwardly preparatory for a new operation. The self acting regulating means already men 20 tioned with respect to the valves and the air nozzles may be employed for controlling the downward movement of the shield. In this case also it is preferred to use primary air which has 25 already been heated in the combustion apparatus itself if the use of cold air is not su?icient. On the other hand and in every case the in clined surface A can be cooled by air or by Water. 71-] in Fig. 2 is a refrigerating water box. Said surface could also be made of refractory ma terials and the whole apparatus may advantage ously be covered with nonconducting material. It will easily be seen that the apparatus accordi ing to the present invention is capable of doing good service when used in combination with cen tral heating furnaces in buildings of a certain importance as it facilitates the service and the stoking of the ?re and allows of dispensing with constant personal attendance. thermostat may be used for controlling the ad What I claim and desire to secure by Letters 10 Patent of the United States is: 1. A combustion device for solid fuel furnaces which comprises an inclined combustion surface, a coal hopper placed above said surface and con taining the solid fuel, means for precipitating a layer of fuel by gravity from the hopper upon 15 said inclined surface, a stationary air nozzle opening in the midst of the fuel at the top of the inclined surface in order to insure combustion, a plate movable relatively to the inclined surface, and means whereby said plate may be moved 20 progressively downwardly relatively to the in clined surface with the ashes and clinker pro duced by the combustion and as the combustion proceeds. 2. A combustion device for solid fuel furnaces 25 comprising an inclined combustion surface, a coal hopper placed above said surface and con taining the solid fuel, means for precipitating a layer of fuel by gravity from the hopper upon said inclined surface, stationary air nozzles blow 30 ing air in the midst of the fuel at the top of the inclined surface; a plate movable relatively to said inclined surface, and means whereby said plate may be moved progressively downwardly rela tively to the inclined surface with the mass of ashes and clinker produced by the combustion and as the combustion proceeds. HENRI DUPUY.