EP2304319A2 - DISPOSITIF D'ALIMENTATION EN COMBUSTIBLES POUR UN FOUR À PUISSANCES ALLANT JUSQU'À MOINS DE 1 kW - Google Patents

DISPOSITIF D'ALIMENTATION EN COMBUSTIBLES POUR UN FOUR À PUISSANCES ALLANT JUSQU'À MOINS DE 1 kW

Info

Publication number
EP2304319A2
EP2304319A2 EP09761228A EP09761228A EP2304319A2 EP 2304319 A2 EP2304319 A2 EP 2304319A2 EP 09761228 A EP09761228 A EP 09761228A EP 09761228 A EP09761228 A EP 09761228A EP 2304319 A2 EP2304319 A2 EP 2304319A2
Authority
EP
European Patent Office
Prior art keywords
screw
diameter
screw conveyor
kiln
tube
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.)
Granted
Application number
EP09761228A
Other languages
German (de)
English (en)
Other versions
EP2304319B1 (fr
Inventor
André Riemens
Gabriela Vetsch
Basso Salerno
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.)
STUV SA
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 EP2304319A2 publication Critical patent/EP2304319A2/fr
Application granted granted Critical
Publication of EP2304319B1 publication Critical patent/EP2304319B1/fr
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • 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
    • 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
    • F23H—GRATES; CLEANING OR RAKING GRATES
    • F23H2700/00—Grates characterised by special features or applications
    • F23H2700/005—Rotary grates with vertical axis
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23H—GRATES; CLEANING OR RAKING GRATES
    • F23H9/00—Revolving-grates; Rocking or shaking grates
    • F23H9/02—Revolving cylindrical grates
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23K—FEEDING FUEL TO COMBUSTION APPARATUS
    • F23K2203/00—Feeding arrangements
    • F23K2203/20—Feeding/conveying devices
    • F23K2203/202—Feeding/conveying devices using screws

Definitions

  • the difficulty is, first, to keep the fire burning safely, second, to continuously carry off the ashes, and, thirdly, to prevent the fire from feeding into the feed stream of the burning material.
  • the object of the present invention is to provide a Brenngut- feed device for granular fuel for a furnace for benefits down to less than 1kW.
  • This furnace is to ensure the continuous supply and the continuous burning of the supplied granular combustible material, and also ensure the continuous ash removal, so that a long unattended operation of the furnace is made possible, which is limited only by the size of the fuel reservoir and the ash catcher, so far these reservoirs are not automatically filled or emptied.
  • a kiln feed device for granular fuel for a furnace for services down to less than 1kW which has a arranged in a pipe screw conveyor for the delivery of the granular material, and which is characterized in that the central screw axis of the screw conveyor, on the outer wall of the screw winding is mounted and with which together the screw conveyor is rotatably mounted in the tube, at least a quarter of the pipe diameter fills, further that this screw axis pipe runs up as a cone in a tip, above the screw a circular rust is arranged horizontally with central round hole and air supply openings in the outer region of the grate, which hole is smaller than the diameter of the screw conveyor and wherein from its edge a conically widening wall as a sliding wall for the fuel to be conveyed outwards ausl UFT, which approximately or exactly parallel to the cone of the upper end of the Helix axis runs.
  • Figure 1 seen the supply device with the arranged at the upper end grate in a longitudinal section
  • Figure 2 A cross section through the screw conveyor, seen from above;
  • Figure 3 The entire screw conveyor seen from the side, shown in a longitudinal section.
  • Figure 1 shows such a conveyor for granular kiln for a furnace, which is designed for performances of down to less than 1KW.
  • 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 cooperates with the feed device, 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 runs almost or exactly parallel to the cone 10 on the worm axis tube 3.
  • the cone 10 encloses an acute angle with the running direction of the funnel inner wall, the angle tip being at the top. 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 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.
  • the kiln parts are moved every minute, handling handling of the extension 11, very slowly on the grate and finally on the fire zone, which is formed by that area 13, 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.
  • the screw conveyor 2 in its entire height. It measures between 200mm to 800mm in height and between 55mm and 85mm in diameter.
  • the auger axle tube 3 measures one-quarter to a little over one-third of the diameter in diameter, and the pitch of the auger per revolution is about one-half auger diameter.
  • Below the conveyor pipe 8 can be completely in a pile of kiln parts, or in a box 15, which can be fed from above or via, for example, an inclined surface 16 as a granulated material with kiln.
  • the conveyor tube 8 is open at the bottom on one side, and through this opening 17 in winningrqhr 8 trickle the kiln pieces, in the example shown cylindrical wood pellets on the screw 2 after.
  • the kiln feed device for such wood stoves for powers of less than 1kW is equipped with an electric motor which drives the worm 2 via a reduction gear.
  • the rotational speed of the screw conveyor 2 can be adjusted from 0.5 to 2 revolutions per minute and thus the supply amount of fuel per time and thus the heating power can be regulated.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Screw Conveyors (AREA)
  • Muffle Furnaces And Rotary Kilns (AREA)
  • Solid-Fuel Combustion (AREA)
  • Solid Fuels And Fuel-Associated Substances (AREA)
  • Furnace Charging Or Discharging (AREA)

Abstract

L'invention concerne un dispositif d'alimentation en combustibles sous forme de granulés pour un four à puissances minimales inférieures à 1 kW. Le dispositif comporte une vis sans fin (2) placée dans un tube (8) et permettant le transport de combustibles sous forme de granulés. L'axe tubulaire (3) central de la vis, sur la paroi extérieure duquel l'hélice (5) est placée et avec lequel la vis sans fin (2) est montée rotative dans le tube (8), présente un diamètre correspondant au moins au quart du diamètre du tube. L'extrémité supérieure de l'axe tubulaire (3) se termine en pointe en formant un cône (10) et une grille circulaire (1) est placée horizontalement au-dessus de la vis sans fin, la grille comportant un trou (6) circulaire central et des orifices d'alimentation en air (7) dans la zone extérieure de ladite grille (1). Le trou (6) présente un diamètre inférieur à celui de la vis sans fin (2) et une paroi (9) conique en forme de trémie s'étend du bord (18) du trou vers le bas, laquelle paroi faisant office de surface glissante pour les combustibles à transporter. La paroi (9) s'étend de manière approximativement ou exactement parallèle au cône (10) de l'extrémité supérieure de l'axe (3). La face intérieure du tube de transport (8) est rugueuse ou pourvue, par exemple, de nervures longitudinales (14), de sorte que les combustibles sont retenus contre la face intérieure et ne sont pas entraînées en rotation avec la vis sans fin.
EP09761228A 2008-06-11 2009-06-04 DISPOSITIF D'ALIMENTATION EN COMBUSTIBLES POUR UN FOUR À PUISSANCES ALLANT JUSQU'À MOINS DE 1 kW Not-in-force EP2304319B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH8822008A CH704571B1 (de) 2008-06-11 2008-06-11 Brenngut-Zufuhreinrichtung für einen Ofen für Leistungen bis hinunter zu weniger als 1kW.
PCT/CH2009/000185 WO2009149570A2 (fr) 2008-06-11 2009-06-04 DISPOSITIF D'ALIMENTATION EN COMBUSTIBLES POUR UN FOUR À PUISSANCES ALLANT JUSQU'À MOINS DE 1 kW

Publications (2)

Publication Number Publication Date
EP2304319A2 true EP2304319A2 (fr) 2011-04-06
EP2304319B1 EP2304319B1 (fr) 2012-08-29

Family

ID=41343450

Family Applications (1)

Application Number Title Priority Date Filing Date
EP09761228A Not-in-force EP2304319B1 (fr) 2008-06-11 2009-06-04 DISPOSITIF D'ALIMENTATION EN COMBUSTIBLES POUR UN FOUR À PUISSANCES ALLANT JUSQU'À MOINS DE 1 kW

Country Status (6)

Country Link
US (1) US8904944B2 (fr)
EP (1) EP2304319B1 (fr)
JP (1) JP5390603B2 (fr)
CA (1) CA2727412C (fr)
CH (1) CH704571B1 (fr)
WO (1) WO2009149570A2 (fr)

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH703513B1 (de) * 2010-07-27 2014-09-30 St V Sa Ofen für granulatförmiges Brenngut, für Leistungen bis hinunter zu weniger als 1 kW, mit Einrichtung für die Brenngutzufuhr sowie die Aschenzerkleinerung und -verteilung.
US20120261433A1 (en) * 2011-04-13 2012-10-18 Aylward Enterprises Two-piece helical feeder tube for filling containers with pills
KR101345425B1 (ko) 2012-05-31 2013-12-27 안상일 연소장치용 화격자
DE102015002770A1 (de) * 2015-03-05 2016-09-08 Schenck Process Gmbh Vorrichtung und Verfahren zur Förderung von Schüttgut in einen Druckraum
UA119005C2 (uk) * 2015-04-02 2019-04-10 Бті Гумковскі Сп. З О.О. Сп. К. Пальник твердопаливного котла
US10562696B2 (en) * 2015-12-24 2020-02-18 Toly Korea Inc. Container for storing and individually discharging capsules
AU2017379142B2 (en) 2016-12-20 2023-04-13 Aduro A/S A combi stove and use of a combi stove
US10526131B2 (en) 2017-06-21 2020-01-07 Toly Management Ltd. Sweep bead dispenser
US10839635B2 (en) 2017-06-21 2020-11-17 Toly Management Ltd. Sweep bead dispenser
RU204249U1 (ru) * 2021-03-01 2021-05-17 Общество с ограниченной ответственностью «ПИОН-Р» (ООО «ПИОН-Р») Ретортная горелка
WO2022202633A1 (fr) * 2021-03-26 2022-09-29 富士フイルム株式会社 Dispositif d'alimentation en poudre
EP4491550A1 (fr) * 2022-03-08 2025-01-15 FUJIFILM Corporation Dispositif d'apport en poudre
CN114877313B (zh) * 2022-04-14 2023-06-27 广西抿元投资控股集团有限公司 一种水冷振动炉排直燃生物质锅炉

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US1876935A (en) * 1931-03-25 1932-09-13 Cleveland Stoker Company Stoker
US2359638A (en) * 1940-05-09 1944-10-03 Paul B Greger Fuel feeder for furnaces
US2320410A (en) * 1940-06-19 1943-06-01 Thomas C Cheasley Combination retort and hearth for stokers
GB666686A (en) 1947-08-07 1952-02-20 Henry Percy Baughan Improvements in or relating to conveying mechanisms
NL176134B (nl) * 1952-02-23 1900-01-01 Yakult Honsha Kk Werkwijze voor het bereiden van een gefermenteerd melkprodukt, dat levensvatbare bifidobacterien bevat, alsmede werkwijze voor de bereiding van voedingsmiddelen onder toepassing van dit gefermenteerde melkprodukt.
US2932713A (en) * 1958-05-26 1960-04-12 Gen Electric Incinerator
US2932712A (en) * 1958-05-26 1960-04-12 Gen Electric Incinerator
JPS6029843B2 (ja) * 1982-02-17 1985-07-12 五郎 森 連続燃焼装置
JPS58148312A (ja) * 1982-02-26 1983-09-03 Tsutomu Sakamoto 不可燃物混入の固形物燃焼装置
US4548194A (en) * 1982-07-27 1985-10-22 Schafer Tony L Fuel stoker and furnace
JPS60117003A (ja) * 1983-11-28 1985-06-24 Ishida Tekkosho:Kk ペレット燃料を使用する燃焼装置
US4553285A (en) * 1984-07-18 1985-11-19 Sachs Kerry M Plug furnace
JP2000001677A (ja) * 1998-06-17 2000-01-07 Yoichi Wada 高分子系廃棄物の熱分解装置
JP2000281208A (ja) * 1999-03-31 2000-10-10 Toshiba Corp 廃棄物搬送装置

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Title
See references of WO2009149570A2 *

Also Published As

Publication number Publication date
CA2727412A1 (fr) 2009-12-17
CH704571B1 (de) 2012-09-14
US20110120354A1 (en) 2011-05-26
CA2727412C (fr) 2016-10-18
JP5390603B2 (ja) 2014-01-15
JP2011523015A (ja) 2011-08-04
US8904944B2 (en) 2014-12-09
EP2304319B1 (fr) 2012-08-29
WO2009149570A2 (fr) 2009-12-17
WO2009149570A3 (fr) 2010-12-23

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