EP0685690A1 - Heater and heating method - Google Patents

Heater and heating method Download PDF

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Publication number
EP0685690A1
EP0685690A1 EP19940810317 EP94810317A EP0685690A1 EP 0685690 A1 EP0685690 A1 EP 0685690A1 EP 19940810317 EP19940810317 EP 19940810317 EP 94810317 A EP94810317 A EP 94810317A EP 0685690 A1 EP0685690 A1 EP 0685690A1
Authority
EP
European Patent Office
Prior art keywords
grate
combustion
oxidation
under
outlet pipe
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
EP19940810317
Other languages
German (de)
French (fr)
Inventor
Valentin Tumer
Original Assignee
Valentin Tumer
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
Priority to CH102488A priority Critical patent/CH683868A5/en
Application filed by Valentin Tumer filed Critical Valentin Tumer
Priority to EP19940810317 priority patent/EP0685690A1/en
Publication of EP0685690A1 publication Critical patent/EP0685690A1/en
Ceased legal-status Critical Current

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Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23LSUPPLYING AIR OR NON-COMBUSTIBLE LIQUIDS OR GASES TO COMBUSTION APPARATUS IN GENERAL ; VALVES OR DAMPERS SPECIALLY ADAPTED FOR CONTROLLING AIR SUPPLY OR DRAUGHT IN COMBUSTION APPARATUS; INDUCING DRAUGHT IN COMBUSTION APPARATUS; TOPS FOR CHIMNEYS OR VENTILATING SHAFTS; TERMINALS FOR FLUES
    • F23L1/00Passages or apertures for delivering primary air for combustion 
    • F23L1/02Passages or apertures for delivering primary air for combustion  by discharging the air below the fire

Abstract

The stove or furnace is for burning wood and can operate without a chimney. It has a high-pressure combustion air feed (7) with the air entering a manifold (7a) with several upward-directed nozzles under the grate (15a) the grate rests on crossbars and has a riddling device (15). There are electrically heated rods (14) between the grate and the air nozzles, to light the fire. A thermostat (15) is also fitted and the igniters may be switched off and the air blast may be switched on when ignition temp. is reached. Combustion is completed in a chamber (2) with insulated (2a) walls over the grate. <IMAGE>

Description

  • The invention relates to a chimney-free heater that works with a memory-free on / off operation and has a pressure and suction fan and a loading space for burning wood.
    Today's wood heaters with a thermal chimney draft have a high consumption of combustion air for the combustion. This chimney draft does not give the oxygen enough time in the combustion, and at the same time, an incorrect, low-emission combustion cannot be achieved by incorrectly guiding the combustion air through the combustion. The fuel consumption of such heaters is enormous because very high temperatures are also released into the environment.
    The object of the present invention is to achieve a reduction in pollutant emissions, in particular nitrogen oxides, by means of an optimized combustion quality. The volume of the combustion air supplied is to be reduced, but the oxygen is to be allowed a longer residence time in the combustion by changing the way the combustion air is conducted, and at the same time the nitrogen is to be fused into nitrogen oxides. The outlet temperature should be reduced enormously without using a chimney draft. A large amount of combustion material can also be saved.
    This is achieved according to the invention by the features specified in the characterizing part of claim 1.
  • The heating process is as follows, taking into account the necessary devices in the heating system:
    The combustion air (7) is blown into the charging chamber (1) vertically from below with a high-pressure fan through distribution nozzles (7a), which are located under the combustion grate (15a) and the ignition rods (14). The ignition takes place fully automatically by means of ignition rods (14) which are fitted between the grate (15a) and the distribution nozzles (7a) and which electrically control the oxidation zone (2) located directly above the grate (15a) to a temperature of preferably 280 ° C Warm up. The circuit to which the ignition rods (14) are connected is switched to a thermostat (13) by means of an electrical switchover system after the ignition temperature has been reached Air blower switched. By means of the introduction of combustion air (7), its ignition is brought about in the contact area between the ignition rods (14) and the fuel and thus the oxidation in the feed chamber (1) is started.
    By blowing combustion air (7) into the oxidation zone (2), there is a jam of the combustion directly under the grate (15a). The oxygen is sucked in by the heat, thereby intensifying the oxidation, while the passive, inert nitrogen is discharged under the grate into the outlet pipe (9) and thus, separate from the oxidation, cannot be melted into nitrogen oxides. This achieves the separation of nitrogen and oxygen, which is important in terms of exhaust technology. What is important and new about the invention is that the nitrogen is no longer passed through the oxidation, since this is the only way to prevent the fusion of oxygen and nitrogen to nitrogen oxides. The measurements from May 19, 1993, carried out on a heating system operating according to the patented process, show 100% oxygen reproduction and demonstrate the low nitrogen oxide formation in the new heating process.
  • Above the oxidation zone (2), the oxygen has an unlimited residence time, which means that it can convert completely to CO2. The blown-in combustion air continuously mixes the oxygen with the combustion residues that build up. Immediate ash formation occurs due to the oxygen blown into the oxidation zone with a certain pressure. This pressure means that the oxidation is instantaneous and there is no wood gasification that would later lead to combustion. The ashes immediately formed are integrated into the oxidation and the entire combustion process, thereby neutralizing the wood vinegar. The combustion residues that form under the grate are discharged in a different direction through the outlet pipe (9). Due to the continuous introduction of air, the entire outlet is strongly mixed and a total burnout of the combustion residues is guaranteed. In this process, the oxygen is absorbed by the oxidation and embedded in the loading area, which means that the decarburization can penetrate up to 300mm into the loading area. The CO is completely removed from the wood and pressed into the wood supply in the loading room. The cooling of the condensed water and the carbon monoxide CO in the upper part of the loading space, which is preferably equipped with a water jacket, enables the offspring to continue Condensed water and carbon monoxide upwards. As a result, the cooled condensed water with the CO at the edge is pressed through the combustion and also burned. The temperatures above the oxidation are graded and range from 100 ° C to 900 ° C. A water vapor and gas mixture with CO and wood tar with various minerals are formed, which burn together with the oxygen in the oxidation. The combustion residues burn up into the outlet pipe of the sprinkler system.
    In the case of a heating system that works according to the new heating process, the loading area forms a heat store in itself, with which heating interval breaks of 3-6 hours can be achieved, while a heat treatment interval is approximately 45 minutes at 10 ° C. This automatic on / off operation without storage ensures that heat is obtained like with an oil heater.
  • An embodiment of the invention functioning according to the heating method to be patented is shown in the following drawings.
    Their reference numbers mean:
    • Fig. 1: Heating: oxidation and carbonization area; Cut: along the grate
      • 2) Oxidation and carbonization zone
      • 2a) Fireclay insulation
      • 3) Ignition zone
      • 4) Ash room
      • 6) Isolation
      • 7) Combustion air supply
      • 7a) Distribution nozzles for combustion air supply
      • 9a) Shielding socket
      • 13) Thermostat
      • 14) Ignition rods
      • 15) Rust vibrator
      • 15a) rust
      • 15c) Grate bracket
      • 15e) Rust vibrator bracket
    • Fig. 2: Oxidation and carbonization area; Cut: on the rust side
      • 2) Oxidation and carbonization space
      • 2a) Fireclay insulation
      • 6) Isolation
      • 7a) Distribution nozzles for combustion air supply
      • 8) Flare and flange
      • 9a) Shielding socket
      • 15) Rust vibrator
      • 15a) rust
      • 15b) Grate support bracket
      • 15c) Grate bracket
      • 15e) Rust vibrator bracket
    • Fig. 3: heater for woodchips and logs, sawdust, wood shavings. Oxidation area and loading area.
      • 1) loading room
      • 1a) connecting flange
      • 2) Oxidation and carbonization area
      • 2a) Fireclay insulation
      • 3) Ignition zone
      • 4) Ash room
      • 7) Combustion air supply
      • 8) Flare and flange
      • 9) outlet pipe
      • 13) Thermostat
      • 14) Ignition rods
      • 15) Rust vibrator
      • 16) Ash compartment lid with lock
      • 19) Ignition chamber lock
      • 20) Fill manhole cover with lock
    • Fig. 4:
      Reaction heater for logs.
      Oxidation area and loading area.
      The designations are identical to those in FIG. 3

Claims (2)

  1. Chimney-free heating with memory-free on / off operation with a pressure and suction fan and a loading room for burning wood, characterized in that nozzles are arranged under the combustion grate in order to distribute the combustion air introduced with the fan evenly under the combustion grate, as well as between the distribution nozzles and the grate attached ignition rods to reach the ignition temperature, and that in addition a thermostat attached above the grate, after reaching the ignition temperature, switches over from the ignition rods to the compressed air blower via a switching device, and that, furthermore, a discharge pipe directly to the Connects reaction space, and a shielding bushing extending to the grate is attached in the attachment of the outlet pipe in order to shield the outlet pipe from the oxidation area.
  2. Heating method for operating the heater according to claim 1, characterized in that combustion air is introduced with a pressure and suction blower into the wood-loaded feed chamber, the combustion air is distributed under the combustion grate with distribution nozzles, the fire with ignition rods, which is switched by a thermostat with a switching device Compressed air blowers are ignited, the separation of the nitrogen in the combustion air and oxygen takes place by the nitrogen, without being pushed through the oxidation zone above the grate, under the shielding bushing into the outlet pipe, while the oxygen from the heat of the Oxidation is absorbed and completely decomposed with an unlimited dwell time and converted to CO2, and then, together with the carbon monoxide, condensate, which has risen in the loading space and is then pressed again by the oxidation by the cooling and thereby burned Minerals, also under the shielding bush and thus under the grate, are forced into the outlet pipe by the resulting excess pressure, and together with the other outlet gases and the combustion residues are converted into steam and washed off with sprayed water immediately after leaving the oxidation zone and the outlet pipe, and finally into the heat is extracted from the wet heat exchangers of the central hot water preparation.
EP19940810317 1988-03-18 1994-05-30 Heater and heating method Ceased EP0685690A1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
CH102488A CH683868A5 (en) 1988-03-18 1988-03-18 Efficient wood-burning stove - has air-blast system under grate giving rapid combustion of wood and recirculation of nitrogen@
EP19940810317 EP0685690A1 (en) 1988-03-18 1994-05-30 Heater and heating method

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH102488A CH683868A5 (en) 1988-03-18 1988-03-18 Efficient wood-burning stove - has air-blast system under grate giving rapid combustion of wood and recirculation of nitrogen@
EP19940810317 EP0685690A1 (en) 1988-03-18 1994-05-30 Heater and heating method

Publications (1)

Publication Number Publication Date
EP0685690A1 true EP0685690A1 (en) 1995-12-06

Family

ID=25686417

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19940810317 Ceased EP0685690A1 (en) 1988-03-18 1994-05-30 Heater and heating method

Country Status (2)

Country Link
EP (1) EP0685690A1 (en)
CH (1) CH683868A5 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2314918A3 (en) * 2009-06-24 2018-03-21 Kimmo Ahola Device for gasification and combustion of solid fuel

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH683868A5 (en) * 1988-03-18 1994-05-31 Valentin Tumer Efficient wood-burning stove - has air-blast system under grate giving rapid combustion of wood and recirculation of nitrogen@

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2585453A1 (en) * 1985-07-23 1987-01-30 Cosse Jacques Continuous-combustion heating furnace for solid fuels
DE3740257A1 (en) * 1986-12-27 1988-07-07 Walter Rueegsegger Wood gasifying furnace, in particular for chips blown into a filling shaft with conveying air and wood waste charged by hand or with a worm
GB2218788A (en) * 1988-02-11 1989-11-22 K B P Boilers Ltd Solid fuel burner
CH683868A5 (en) * 1988-03-18 1994-05-31 Valentin Tumer Efficient wood-burning stove - has air-blast system under grate giving rapid combustion of wood and recirculation of nitrogen@

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2585453A1 (en) * 1985-07-23 1987-01-30 Cosse Jacques Continuous-combustion heating furnace for solid fuels
DE3740257A1 (en) * 1986-12-27 1988-07-07 Walter Rueegsegger Wood gasifying furnace, in particular for chips blown into a filling shaft with conveying air and wood waste charged by hand or with a worm
GB2218788A (en) * 1988-02-11 1989-11-22 K B P Boilers Ltd Solid fuel burner
CH683868A5 (en) * 1988-03-18 1994-05-31 Valentin Tumer Efficient wood-burning stove - has air-blast system under grate giving rapid combustion of wood and recirculation of nitrogen@

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2314918A3 (en) * 2009-06-24 2018-03-21 Kimmo Ahola Device for gasification and combustion of solid fuel

Also Published As

Publication number Publication date
CH683868A5 (en) 1994-05-31

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