EP0058658A1 - Arrangement for firing solid fuels. - Google Patents
Arrangement for firing solid fuels.Info
- Publication number
- EP0058658A1 EP0058658A1 EP80900738A EP80900738A EP0058658A1 EP 0058658 A1 EP0058658 A1 EP 0058658A1 EP 80900738 A EP80900738 A EP 80900738A EP 80900738 A EP80900738 A EP 80900738A EP 0058658 A1 EP0058658 A1 EP 0058658A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- fuel
- arrangement
- space
- fire
- place
- 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
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24B—DOMESTIC STOVES OR RANGES FOR SOLID FUELS; IMPLEMENTS FOR USE IN CONNECTION WITH STOVES OR RANGES
- F24B1/00—Stoves or ranges
- F24B1/02—Closed stoves
- F24B1/08—Closed stoves with fuel storage in a single undivided hopper within stove or range
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24B—DOMESTIC STOVES OR RANGES FOR SOLID FUELS; IMPLEMENTS FOR USE IN CONNECTION WITH STOVES OR RANGES
- F24B5/00—Combustion-air or flue-gas circulation in or around stoves or ranges
- F24B5/02—Combustion-air or flue-gas circulation in or around stoves or ranges in or around stoves
- F24B5/021—Combustion-air or flue-gas circulation in or around stoves or ranges in or around stoves combustion-air circulation
- F24B5/023—Supply of primary air for combustion
Definitions
- This invention relates to an arrangement for firing solid fuels, comprising a substantially vertical fuel space with an upwardly located, preferably sealable opening for fuel filling-up, and with a bottom consisting of a grate or the like for passing ash to an ash-space located beneath the fuel space, at least one feed means for controlled supply of combustion air at least to the fire box located above said grate, and a duct connected to a chimney and communicating with the fire box for carrying away flue gases to the chimney.
- the damper or valve normally must be fully open for rendering complete combustion possible.
- the damper or valve is closed fully or partially, in order to throttle the air supply and thereby to reduce the heat emission from the fire-place, for example when a predetermined temperature has been achieved in one or several rooms, in a water heater, heat magazine, in one or several ovens and/or hotplates to be heated and maintained heated, the combustion normally is incomplete due to insufficient air supply. It has been tried since long to manage this problem, but without full success. Incomplete combustion as known results a.o.
- the object of the present invention is to produce an arrangement for the firing of solid fuels which does not show the aforesaid disadvantages, but renders possible a combustion as complete as possible even when the air supply is cut off at maximum or partially, and which also is capable to include a greater fuel amount without giving rise to a combustion thereof which is faster than necessary for maintaining a certain predetermined temperature in one or several rooms, in a water heater, heat magazine, in a stove and/or one or several hotplates.
- Fig. 1 is a schematic section through a firing arrangement according to the present invention
- Fig. 2 is a partial section substantially along the line II-II in Fig. 1
- Fig. 3 is a partial section substantially along the line III-III in Fig. 1 through a pair of air supply ducts
- Fig. 4 shows a mechanism for closing and opening two doors comprised in the arrangement.
- 1 designates a fuel space, which at its upper portion is provided with an opening 3 for filling-in fuel.
- Said opening preferably can be sealed by means of a door 2 and has a bottom in the form of a grate 4 for supporting the fuel in the fuel space 1 and for passing ash formed at the combustion to an ash-space 5, which is located beneath said grate 4 and said fuel space 1 and includes a preferably sealable door 6 for removing ash from the ash space.
- a relatively wide duct 8 is connected which extends to a chimney 7 for conducting away flue gases from the combustion.
- Said duct 8 is in other respects separated entirely from the fuel space 1 by means of a partition wall 9 , which should be provided with incombustible insulation 10 for restricting the heat transfer from the duct 8 to the fuel space 1.
- a throttling 11 is provided, for example in the form of a perforated plate 12, which has at least one through hole 13, the cross-sectional area of which is smaller than the duct 8 in general on both sides of the throttling.
- the said throttling acts as a combustion nozzle and is intended to bring about an effective combustion of combustible gases,which come from the fire-place of the fuel space and must pass through the throttling 11, because this is located, seen in the draught direction, after the fire-place of the fuel space which generally is designated by 14.
- the primary combustion air required for the combustion is supplied both to the fire-place It of the fuel space and to the combustion nozzle 11 through a common piping system 15, which by an adjustable damper or draught valve 17 is connected to an intake 16 with adjustable damper or draught valve 17.
- A1- though not shown in the draining it is possible, within the scope of the principles on which the present invention is based, to arrange separate piping systems for the supply of the primary combustion air to the fire-place of the fuel space and to the combustion nozzle 11.
- the piping system shown in the drawing comprises a plurality of pipes 18, which extend from an air distribution chamber 19 provided in connection to said intake 16 inward beneath the fuel space 1, and which at least in their port ion facing toward the fuel space 1 are provided with air holes 20, which are arranged in at least two rows and are directed obliquely upward-outward at a relative angle of e.g. 80 to 90o.
- air holes 20 in the pipes 18 necessary combustion air is supplied to the fire-place 14 of the fuel space in a way distributed over the surface of the fire-place, in order to maintain the combustion in said fire-place, which combustion per se need not be complete, but may take place with a certain air deficit.
- the combustion shall be such that in the fire- place 14 of the fuel space a more or less glowing or burning fuel-hearth, depending on the amount of supplied air, is maintained, to which hearth new fuel is fed continuoulsy from above as long as fuel is available in the fuel space.
- the fuel space 1 widens downward to the grate 4 as shown in the drawing.
- the pipe of said pipes 18 which is located beneath the throttling 11 is provided with an upward pipe neck 21, the end of which located at some distance from the nozzle opening 13 is closed but provided with a number of air holes 22 both at the end and in adjacent wall portions for the supply of necessary primary combustion air to the nozzle opening formed by the throttling 11, which opening thus constitutes the remaining portion of the fire-place of the present arrangement, in which fire-place the combustible gases coming from the fuel-hearth are mixed with the combustion air, which flows out of the air holes 22 of said pipe neck and is preheated by the heat from the fuel-hearth, and thereby are combusted at a high combustion temperature, not the least due to the increase in speed caused by the throttling and the short distance to the fuel-hearth.
- the intake to the air distribution chamber 19, in which the combustion air is distributed to the different pipes 18, is formed as an exchangeable high-efficiency nozzle 16 and controlled in known manner by means of the draught-valve 17, which is located in front of the intake or nozzle 16 and can be controlled automatically in response to the temperature in or outside the fire-place for obtaining continuous or intermittent draught control, though it is shown in the drawing to be manually adjustable in different draught positions between fully open and fully closed position.
- the high-efficiency nozzle is shown in the drawing in the form of an exchangeable plate 23 with one or several holes 24 having a total flow area ensuring the supply of an air amount required for high-efficiency combustion at fully open draught valve.
- an exchangeable idling nozzle in the form of an exchangeable plate 25 is provided in the draught valve, which plate has a small flow hole 26, which permits the passage only of the air amount required for keeping the fuel-hearth alive and in the nozzle opening 13 to effect the combustion of gases coming from the fuel-hearth.
- pre-heated secondary air can be supplied through an adjustable secondary air damper, which in the drawing is shown to consist of a slide 38 movable in the holder and provided with a plurality of holes 35 located to the side of each other at a predetermined distance.
- an adjustable secondary air damper which in the drawing is shown to consist of a slide 38 movable in the holder and provided with a plurality of holes 35 located to the side of each other at a predetermined distance.
- said holes are located directly in front of corresponding holes 37 in the wall to the duct 8, and by moving the slide 38 in its longitudinal direction the damper, thus, can be adjusted by covering the holes 37 entirely or partially, whereby a control of the secondary air is obtained.
- the secondary air damper can be used for supplying extra combustion air whenever required and also at fully open draught valve 17.
- the combustion air flowing in through the intake or nozzle 16 thus, is distributed, independently of the position of the draught valve in the distribution chamber 19, to the different pipes 18 and then, in proportions defined by the air holes 20 and, respectively, 22, to the two fire-places, Owing to the increase in speed and the resulting higher turbulence brought about by the throttling 11 in the duct 8, the combustion air supplied to the nozzle opening 13 is mixed intimately with the gases coming from the fuel hearth whereby an efficient and substantially complete combustion is obtained which substantially is independent of whether the combustion speed is high or low.
- the flue gases leaving the arrangement according to the present invention are thereby clean and protective to the environment.
- the fuel space 1 can be connected to the chimney 7 through a door 29 which, thus, must be opened about simultaneously with the door 2.
- the filling-in door 3 is locked in closed position by a locking arm 32, which is attached on an axle 31 connected to the door 29.
- the locking arm 32 For being able to open the door 3, the locking arm 32 must be pivoted upward, whereafter by said locking arm the door 29 can be displaced and the fuel space 1 be connected to the chimney 7.
- the door 29 first must be moved back to the position shown in Fig.
- Said arm is arranged to co-operate by a clamp nose 33 with a guide groove 34 in order to be drawn in to the door 3 and by a pressure nose 35 to press on the door 3 and hold it closed in locked position.
- the partition wall 9 between the fuel space 1 and the duct 8 is at its lower portion and beneath the throttling
- the grate 4 also is bent upward and by its upward bent portion rests against the pipe neck 21 and against support brackets on the other pipes 18, which brackets however are not shown in the drawing.
- a grate 29 can be provided beneath the pipes 19, which grate should have a finer mesh than the grate 4. In certain cases it may be sufficient with a grate located beneath the pipe 18.
Abstract
Description
Claims
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AT80900738T ATE17036T1 (en) | 1980-04-16 | 1980-04-16 | ARRANGEMENT FOR BURNING SOLID FUEL. |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/SE1980/000107 WO1981003057A1 (en) | 1980-04-16 | 1980-04-16 | Arrangement for firing solid fuels |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0058658A1 true EP0058658A1 (en) | 1982-09-01 |
EP0058658B1 EP0058658B1 (en) | 1985-12-18 |
Family
ID=20339904
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP80900738A Expired EP0058658B1 (en) | 1980-04-16 | 1980-04-16 | Arrangement for firing solid fuels |
Country Status (5)
Country | Link |
---|---|
EP (1) | EP0058658B1 (en) |
AT (1) | ATE17036T1 (en) |
AU (1) | AU5987580A (en) |
DE (1) | DE3071296D1 (en) |
WO (1) | WO1981003057A1 (en) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
ATE24237T1 (en) * | 1982-12-22 | 1986-12-15 | Welger Geb | FURNACE FOR STRAW OR SIMILAR MATERIAL. |
FR2564951B1 (en) * | 1984-05-28 | 1989-06-16 | Guerton Sa | INCINERATOR, ESPECIALLY FOR THE COMBUSTION OF INDUSTRIAL WASTE |
IT1391701B1 (en) * | 2008-11-07 | 2012-01-17 | Nordica Spa | HEATING APPLIANCE SUPPLIED WITH SOLID FUEL WITH PERFECT STRUCTURE |
ES2530318B1 (en) * | 2015-01-29 | 2015-10-21 | Pedro José PANADERO GÓMEZ | Multi-purpose stove |
Family Cites Families (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB1151741A (en) * | 1965-04-14 | 1969-05-14 | Radiation Ltd | Solid Fuel Heating Appliance |
GB1176944A (en) * | 1966-06-01 | 1970-01-07 | Coal Industry Patents Ltd | Solid Fuel Combustion Apparatus |
AT306968B (en) * | 1971-04-30 | 1973-05-10 | Hahn Stefan | Smokeless hopper incinerator |
US3874362A (en) * | 1974-04-11 | 1975-04-01 | Alexander Kapustin | Space heating device using solid fuel |
GB1465401A (en) * | 1975-01-20 | 1977-02-23 | Glynwed Domestic Heating Appli | Solid fuel heating appliances |
DE2503485A1 (en) * | 1975-01-29 | 1976-08-05 | Thimm Max | Air motor of reciprocating piston type - has discharge as well as supply air controlled by regulating valves |
DE2508485A1 (en) * | 1975-02-27 | 1976-09-09 | Kueppersbusch | Solid fuel domestic cooker - has refractory target plate wall separating combustion chamber from smoke box |
GB1544311A (en) * | 1977-11-28 | 1979-04-19 | Husa M | Combustion air supply for firebox |
GB2011065B (en) * | 1977-12-19 | 1982-03-24 | Coal Industry Patents Ltd | Solid fuel combustion appliance |
-
1980
- 1980-04-16 WO PCT/SE1980/000107 patent/WO1981003057A1/en active IP Right Grant
- 1980-04-16 DE DE8080900738T patent/DE3071296D1/en not_active Expired
- 1980-04-16 AT AT80900738T patent/ATE17036T1/en not_active IP Right Cessation
- 1980-04-16 EP EP80900738A patent/EP0058658B1/en not_active Expired
- 1980-04-16 AU AU59875/80A patent/AU5987580A/en not_active Abandoned
Non-Patent Citations (1)
Title |
---|
See references of WO8103057A1 * |
Also Published As
Publication number | Publication date |
---|---|
AU5987580A (en) | 1981-11-10 |
EP0058658B1 (en) | 1985-12-18 |
WO1981003057A1 (en) | 1981-10-29 |
ATE17036T1 (en) | 1986-01-15 |
DE3071296D1 (en) | 1986-01-30 |
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Legal Events
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