WO2012012910A2 - Dispositif d'alimentation en combustible pour un four dont la puissance peut descendre jusqu'en dessous de 1 kw - Google Patents

Dispositif d'alimentation en combustible pour un four dont la puissance peut descendre jusqu'en dessous de 1 kw Download PDF

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Publication number
WO2012012910A2
WO2012012910A2 PCT/CH2011/000170 CH2011000170W WO2012012910A2 WO 2012012910 A2 WO2012012910 A2 WO 2012012910A2 CH 2011000170 W CH2011000170 W CH 2011000170W WO 2012012910 A2 WO2012012910 A2 WO 2012012910A2
Authority
WO
WIPO (PCT)
Prior art keywords
grate
screw
granular
diameter
screw conveyor
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/CH2011/000170
Other languages
German (de)
English (en)
Other versions
WO2012012910A3 (fr
Inventor
André Riemens
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Publication of WO2012012910A2 publication Critical patent/WO2012012910A2/fr
Anticipated expiration legal-status Critical
Publication of WO2012012910A3 publication Critical patent/WO2012012910A3/fr
Ceased legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23B—METHODS OR APPARATUS FOR COMBUSTION USING ONLY SOLID FUEL
    • F23B40/00—Combustion apparatus with driven means for feeding fuel into the combustion chamber
    • F23B40/04—Combustion apparatus with driven means for feeding fuel into the combustion chamber the fuel being fed from below through an opening in the fuel-supporting surface
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
    • F23G7/00—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals
    • F23G7/10—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals of field or garden waste or biomasses
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23K—FEEDING FUEL TO COMBUSTION APPARATUS
    • F23K3/00—Feeding or distributing of lump or pulverulent fuel to combustion apparatus
    • F23K3/10—Under-feed arrangements
    • F23K3/14—Under-feed arrangements feeding by screw

Definitions

  • the object of this invention is to remedy these drawbacks and to provide a device which comminutes the ash structure continuously during operation and ensures a uniform distribution of the ash on the grid, so that an ash accumulation is prevented in front of a mounted ignition element that Finally, the ash falls evenly over the outer edge of the grate and the Ash quality generally becomes finer and firmer, resulting in less volume.
  • a kiln feed device for granular kiln for a furnace for services down to less than 1kW consisting of a arranged in a pipe screw conveyor, wherein above the screw a circular, horizontal grate with a central, round Hole and air supply openings in the outer region of the grate is arranged, and which is characterized in that the axis of the screw conveyor runs upwards in a steel bracket, which projects beyond the grate surface, and whose end is directed at an outer portion down against the grate and ends in the outer third of the radius of the grate at a distance to the grate surface.
  • Figure 1 seen the supply device with the arranged at the upper end grate in a longitudinal section
  • Figure 1 shows such a conveyor for granular kiln for a furnace, which is designed for benefits of down to less than 1 KW.
  • the kiln can consist of wood pellets, but also of wood chips, small pieces of wood or dried corn or other grains.
  • the grate 1 of the furnace acts with the feed device together, and this is equipped with a screw conveyor 2.
  • the screw conveyor 2 is arranged in the example shown perpendicular to the grate surface and the central screw axis tube 3, on the outer wall 4, the screw 5 is mounted and with which together the screw conveyor 2 is rotatably mounted in the conveyor tube 8, fills a considerable part of the conveyor tube 8, which the whole screw conveyor 2 encloses.
  • the conveyor tube 8 with the screw conveyor 2 can also be arranged obliquely to the perpendicular. It is then achieved on the bottom of additional friction of the fuel with the delivery pipe 8, which is beneficial to the promotion.
  • the pipe diameter of the worm axis pipe 3 measures one third of the screw diameter or the pipe diameter, and measures, for example, 60 mm.
  • the diameter of the screw axis tube 3 should be at least a quarter of the screw conveyor diameter, because thus also a sufficient torque on the actual screw 2 and on the helical to the screw axis tube 3 wound smoothest possible conveying surface 5 are transmitted.
  • On the conveying surface 5 of the screw 2 here is a single wood pellet 18 drawn to give an approximate size comparison.
  • This screw axis tube 3 runs up as a cone 10 in a tip, wherein above the screw 2, the grate 1 is arranged horizontally with a central circular hole 6. It fits exactly on the upper end of the auger axle tube 8 and is placed on this.
  • the grate 1 is preferably circular as shown and interspersed with air supply openings 7 in the outer region.
  • the circular hole 6 in the grate 1 measures approximately half of the delivery pipe diameter. From this circular hole 6 includes a downwardly projecting, funnel-shaped edge 9, which opens as a funnel down.
  • the funnel wall is almost or exactly parallel to the cone 10 on the screw axis tube 3.
  • the cone 10 includes the course direction of the funnel inner wall at an acute angle, the angle top is above. This angle may only be very small, otherwise a jamming of the fuel in the area between the cone 10 and the funnel inner wall is provoked.
  • the the actual screw 2 or its winding conveying surface 5 terminates with an approximately perpendicular to the grate surface extension 11.
  • This auger 2 as shown here rotates clockwise in operation as seen from above. Of course, it could also be designed to boost in a counterclockwise direction.
  • the firing material to be conveyed remains approximately at the same point in relation to its rotational position in the conveying tube 8, and the conveying surface 5 of the screw 2 slides under the kiln, being lifted up in the conveying tube 8, until finally at the level of the hole 6 arrives.
  • the inside of the tube 8 is equipped with a plurality of preferably axially extending plateaus or grooves 14, on which the auger turns past with a minimum distance, and between the plateaus or grooves a distance of the height of the plateaus or grooves to the inner wall of the tube 8 leaves open.
  • the inner wall of the tube 8 may also be provided with a rough surface.
  • the auger 2 rotates only very slowly, with a rotational speed of less than 1 rev / min. "1 Arrived at the top, the firing material is detected by the extension 11 and pushed clockwise from above, where the extension the edge of the As a result of this slow rotation of the extension 11, it is ensured that the parts of the burning material which have advanced due to the forces acting on them move radially outwards and finally onto the region 12
  • the area, a concentric ring, which immediately adjoins the hole 6 in the grate 1, is free of ventilation holes 7.
  • the parts of the burning material burn there heavy and must first be pushed further radially outwards at the next passage of the extension 11, if of the same again parts of kiln a little bit on the Rost Structure be pushed.
  • the kiln parts are moved every minute, dealing with handling of the extension 11, very slowly on the grid and finally on the fire zone, which by the region 13 is formed, which is equipped with air holes 7.
  • the diameter of the whole grate 1 is about twice the diameter of the conveyor tube 8. So if this measures 60mm, then the grate 1 measures about 120mm in diameter. Due to the gentle and continuous supply of fresh fuel a nice, high and regular flame pattern on the grate 1 is achieved, and no flickering, technically effective flames.
  • FIG. 5 shows this fuel feed device with the steel strap 19 in a longitudinal section.
  • the outer portion 22 of the bracket 19 is above the outer third of the radius of the grate 1 and its end over the grate surface, in detail about 8mm above the grate surface.
  • the tip 25 of the ignition element 24 is close to the adoptedcardenden outer portion 22 of the bracket 19 and this area is therefore kept free of ash or cyclically.
  • the kiln feed device for such wood stoves for powers of less than 1kW is equipped with an electric motor that drives the worm 2 via a reduction gear.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Environmental & Geological Engineering (AREA)
  • Combustion & Propulsion (AREA)
  • Chemical & Material Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Sustainable Energy (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Solid-Fuel Combustion (AREA)
  • Muffle Furnaces And Rotary Kilns (AREA)

Abstract

Le dispositif d'alimentation en combustible selon l'invention est destiné à un combustible granulaire pour un four dont la puissance peut descendre jusqu'en dessous de 1 kW. Il se compose d'une vis d'alimentation (2) disposée dans un tube (8), une grille horizontale (1) circulaire, avec un trou rond central (6) et des ouvertures d'alimentation en air (7) dans la partie extérieure de la grille (1), étant disposée au-dessus de la vis. L'axe de la vis d'alimentation (2) se prolonge vers le haut par une anse en acier (19), qui fait saille par rapport à la surface de la grille et dont l'extrémité (23), au niveau d'une partie extérieure (22), est orientée vers le bas en direction de la grille (1) et se termine dans le tiers extérieur du rayon de la grille (1) à une certaine distance de la surface de la grille.
PCT/CH2011/000170 2010-07-27 2011-07-21 Dispositif d'alimentation en combustible pour un four dont la puissance peut descendre jusqu'en dessous de 1 kw Ceased WO2012012910A2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH1231/10 2010-07-27
CH12312010A CH703513B1 (de) 2010-07-27 2010-07-27 Ofen für granulatförmiges Brenngut, für Leistungen bis hinunter zu weniger als 1 kW, mit Einrichtung für die Brenngutzufuhr sowie die Aschenzerkleinerung und -verteilung.

Publications (2)

Publication Number Publication Date
WO2012012910A2 true WO2012012910A2 (fr) 2012-02-02
WO2012012910A3 WO2012012910A3 (fr) 2013-02-21

Family

ID=44658499

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CH2011/000170 Ceased WO2012012910A2 (fr) 2010-07-27 2011-07-21 Dispositif d'alimentation en combustible pour un four dont la puissance peut descendre jusqu'en dessous de 1 kw

Country Status (2)

Country Link
CH (1) CH703513B1 (fr)
WO (1) WO2012012910A2 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2698580A1 (fr) * 2012-08-16 2014-02-19 HET - Heiz- und Energietechnik Entwicklungs GmbH Brûleur à table élévatrice, grill doté d'un brûleur à table élévatrice et chauffage à biomasse doté d'un brûleur à table élévatrice
JP2016217636A (ja) * 2015-05-21 2016-12-22 伊藤　鋼一 バイオマス燃料焼却炉
CN106554785A (zh) * 2015-09-25 2017-04-05 神华集团有限责任公司 盘式反应器
CN108895434A (zh) * 2018-08-07 2018-11-27 淮北市向阳锅炉厂 一种风冷生物质燃烧机

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104220563B (zh) * 2012-02-06 2017-07-11 M·麦戈登 生物质气化的方法和系统
GB2637256A (en) 2022-09-20 2025-07-16 Mcgolden Llc Gasifier with a reaction zone and a cooling zone with alternately flighted augers and paddles

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE362609A (fr) *
DE444608C (de) * 1927-05-23 Walter Rempen Beschickungsvorrichtung fuer Grudeoefen
DE456908C (de) * 1924-04-05 1928-03-03 Walter Rempen Beschickungsvorrichtung fuer Grudeoefen
US1888586A (en) * 1928-05-10 1932-11-22 William B Chapman Firebed agitating mechanism
JPS6029843B2 (ja) * 1982-02-17 1985-07-12 五郎 森 連続燃焼装置
CH704571B1 (de) * 2008-06-11 2012-09-14 Stuv Sa Brenngut-Zufuhreinrichtung für einen Ofen für Leistungen bis hinunter zu weniger als 1kW.
CH701674B1 (de) * 2009-08-19 2014-09-15 St V Sa Holzpellet-Ofen mit Zufuhreinrichtung.

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2698580A1 (fr) * 2012-08-16 2014-02-19 HET - Heiz- und Energietechnik Entwicklungs GmbH Brûleur à table élévatrice, grill doté d'un brûleur à table élévatrice et chauffage à biomasse doté d'un brûleur à table élévatrice
JP2016217636A (ja) * 2015-05-21 2016-12-22 伊藤　鋼一 バイオマス燃料焼却炉
CN106554785A (zh) * 2015-09-25 2017-04-05 神华集团有限责任公司 盘式反应器
CN108895434A (zh) * 2018-08-07 2018-11-27 淮北市向阳锅炉厂 一种风冷生物质燃烧机

Also Published As

Publication number Publication date
CH703513A2 (de) 2012-01-31
WO2012012910A3 (fr) 2013-02-21
CH703513B1 (de) 2014-09-30

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