DK171475B1 - Fireplaces with glass partition and cleaning means - Google Patents
Fireplaces with glass partition and cleaning means Download PDFInfo
- Publication number
- DK171475B1 DK171475B1 DK153591A DK153591A DK171475B1 DK 171475 B1 DK171475 B1 DK 171475B1 DK 153591 A DK153591 A DK 153591A DK 153591 A DK153591 A DK 153591A DK 171475 B1 DK171475 B1 DK 171475B1
- Authority
- DK
- Denmark
- Prior art keywords
- chamber
- heat exchanger
- air
- box
- combustion chamber
- Prior art date
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
- F24B13/00—Details solely applicable to stoves or ranges burning solid fuels
- F24B13/004—Doors specially adapted for stoves or ranges
-
- 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
- F24B5/025—Supply of secondary air for completing combustion of fuel
Description
DK 171475 B1 BRÆNDEOVN MED GLASPARTI OG MIDLER TIL RENHOLDELSE AF DETTE Teknikkens standpunkt 5 Opfindelsen angår en brændeovn med et lukket brændkammer og med et glasparti monteret på ovnens forparti, fortrinsvis i ovnlågen, og med en indbygget varmeveksler omfattende et lukket kammer, hvortil der tilledes luft, som udledes gennem en spalte ved glaspartiets overkant til frembringelse 10 af et lufttæppe, som forløber langs glaspartiets bagside.The invention relates to a wood-burning stove with a closed combustion chamber and with a glass part mounted on the furnace's front part, preferably in the oven door, and with a built-in heat exchanger comprising which is discharged through a slit at the top of the glass portion to produce an air blanket extending along the rear of the glass portion.
Ovne med glaspartier, hvorigennem ilden kan beskues, er meget udbredt, da man herved kombinerer pejsens synlige ild med den lukkede ovns forbrændingsmæssige fordele.Furnaces with glass sections through which the fire can be seen are very widespread, since they combine the visible fire of the fireplace with the combustible advantages of the closed furnace.
1515
Glaspartiet lider imidlertid af en alvorlig ulempe, nemlig en udpræget tendens til at blive tilsmudset af sod- og kondensatbelægninger. Disse kan brænde sig fast på glaspartiet således, at der skal sundhedsfarlige ætsende midler til at 20 opløse og fjerne disse.However, the glass part suffers from a serious disadvantage, namely a marked tendency to be soiled by soot and condensate coatings. These can burn on the glass part so that corrosive corrosive agents need to be dissolved and removed.
Især ved og lidt efter optændingen, hvor glaspartiets overfladetemperatur ligger under kondensatets dugpunkt, som er omkring 150°C, er det så godt som umuligt at undgå en sådan 25 afsætning på glaspartiet.Especially at and slightly after ignition, where the surface temperature of the glass portion is below the dew point of the condensate, which is about 150 ° C, it is virtually impossible to avoid such deposition on the glass portion.
Der kendes forskellige konstruktioner til frembringelse af en luftstrømning til forhindring af denne afsætning, det vil sige en luftstrømning langs glaspartiets inderside, men 30 disse konstruktioner har ikke vist sig at fungere tilfredsstillende.Various constructions are known for producing an air flow to prevent this deposition, that is, an air flow along the inside of the glass portion, but these structures have not been found to function satisfactorily.
Fra beskrivelsen til DK patentansøgning nr. 3134/87 og US patentskrift nr. 4.941.451 kendes ovne, hvor forvarmet luft 35 føres ned over glaspartiet gennem en spalte, som forløber langs glaspartiets overkant. Opvarmningen af luften sker DK 171475 B1 2 ved, at: den tilledes en kanal forneden på ovnen og ledes op gennem kanaler i brændkammerets sider, hvori luften opvarmes, hvorefter den udledes gennem spalten over glaspartiet.From the specification of DK patent application No. 3134/87 and US patent No. 4,941,451, ovens are known in which preheated air 35 is passed down the glass portion through a slot extending along the upper edge of the glass portion. The heating of the air takes place by: it is fed to a duct at the bottom of the furnace and led up through ducts in the sides of the combustion chamber in which the air is heated, after which it is discharged through the gap over the glass part.
5 Fra DE offentliggørelsesskrift nr. 4.003.779 kendes en ovn af den omhandlede art med et lukket brændkammer, med et glasparti monteret på forpartiet og med en indbygget varmeveksler oven over glaspartiet, hvorfra varm luft strømmer mod den indvendige del af glaspartiet og derved rengør 10 glaspartiet, og hvor lufttilstrømningen til brændkammeret sker via åbninger direkte gennem forpartiet.5 from DE Publication No. 4,003,779, a furnace of the kind in question is known with a closed combustion chamber, with a glass part mounted on the front part and with a built-in heat exchanger above the glass part, from which hot air flows to the inner part of the glass part, thereby cleaning 10 the glass section, and where the air flow to the combustion chamber is via openings directly through the front section.
Disse kendte konstruktioner har imidlertid meget ringe virkningsgrad, især på grund af luftens langsommelige op-15 varmning. Dette skyldes først og fremmest, at kanalerne kun bestryges af den varme røggas langs deres inderside, hvorved varmevekslingen bliver utilstrækkelig, især i optæn-dingsfasen, hvor risikoen for sod- og kondensatafsætninger er størst.However, these known constructions have very poor efficiency, especially because of the slow heating of the air. This is primarily due to the fact that the ducts are only coated by the hot flue gas along their inside, thereby making the heat exchange insufficient, especially during the ignition phase, where the risk of soot and condensate deposits is greatest.
2020
Fordele ved opfindelsenAdvantages of the invention
Brændeovnen ifølge opfindelsen, hvor varmevekslerens kasse rager frit ind i brændkammeret eller i en del af brændkam-25 meret oven over ildstedet, og hvor der i kammeret er indsat en plade, som forløber fra forpartiet og indtil et stykke fra kammerets bagvæg på en sådan måde, at den indstrømmende luft bliver ledt gennem kammerets øvre del, før den ledes tilbage gennem kammerets nedre del for udstrømning gennem 30 spalten, har først og fremmest en hidtil ukendt effekt på grund af den effektive opvarmning af luftstrømmen til renholdelse af glaspartiet.The stove according to the invention, wherein the box of the heat exchanger protrudes freely into the combustion chamber or part of the combustion chamber above the fireplace, and wherein a plate is inserted which extends from the front part and up to a distance from the rear wall of the chamber in such a way. that the inflowing air being conducted through the upper part of the chamber before being directed back through the lower part of the chamber for outflow through the slit has, first and foremost, a novel effect due to the effective heating of the air stream to clean the glass portion.
Dette skyldes først og fremmest varmevekslerens konstrukti-35 on og placering, idet lufttilgangen sker direkte til varmeveksleren, og på grund af dennes placering direkte over DK 171475 B1 3 ildstedet i røggasstrømningen sikres den hurtigst mulige opvarmning af den indstrømmende luft.This is primarily due to the design and location of the heat exchanger, since the air supply is directly to the heat exchanger, and because of its location directly above the fire place in the flue gas flow, the fastest possible heating of the inflowing air is ensured.
Udstrømningen sker via en spalte fortil i kassen, således 5 at luften efter indsugningen i kassen opvarmes direkte af røggasserne ved konvektion og derved presses ud med en betydelig hastighed.The outflow takes place via a gap in the front of the box, so that the air after the suction in the box is heated directly by the flue gases by convection and thereby forced out at a considerable speed.
Ved at lade varmevekslerens kasse rage frit ind i brændkam-10 meret kan røggasserne bestryge kassen på alle sider eksklusiv forsiden, hvilket giver en hurtig og effektiv varmeveksling, og ved at forsyne kassen med en indvendig skilleplade, kan luftens vej gennem kassen forlænges, og konvek-tionsopvarmningen gøres derved så effektiv som muligt.By allowing the heat exchanger's box to protrude freely into the combustion chamber, the flue gases can coat the box on all sides excluding the front, providing a quick and efficient heat exchange, and by providing the box with an internal separator, the air path through the box can be extended and convex. -tion heating is thereby made as efficient as possible.
1515
Effekten af denne luftstrømning kan øges, hvor der alene indtages primær og sekundær forbrændingsluft gennem varmeveksleren, idet der herved dels opnås en fuldstændig sikker renholdelse af glaspartiet og endvidere en perfekt forbræn-20 ding på grund af den forvarmede luft.The effect of this air flow can be increased, where only primary and secondary combustion air is consumed through the heat exchanger, thereby providing a completely safe cleaning of the glass part and, moreover, perfect combustion due to the preheated air.
Ved, som omhandlet i krav 2, at lade varmeveksleren forløbe i hele brændkammerets bredde og indtil et stykke fra dets bagvæg vil de varme røggasser ledes direkte mod kassens 25 bund og derefter ledes langs kassens overside, før de forlader ovnen, hvilket giver en optimal varmeveksling og udnyttelse af røggassernes varmeindhold, hvilket især under optændingen er vigtig.By, as defined in claim 2, allowing the heat exchanger to extend throughout the width of the combustion chamber and up to a distance from its rear wall, the hot flue gases will be directed directly to the bottom of the box 25 and then passed along the top of the box before leaving the oven, which provides an optimal heat exchange and utilizing the heat content of the flue gases, which is especially important during the ignition.
30 Ved, som omhandlet i krav 3, at forsyne kammeret med en plade, kan man let tildanne kassen og pladen efter forholdene i den pågældende ovns brændkammer.By providing, as claimed in claim 3, the chamber with a plate, it is easy to form the box and plate according to the conditions in the combustion chamber of the furnace concerned.
Ved, som omhandlet i krav 4, at nedbøje pladens nederste 35 del, vil røggassernes afstrømningshastighed under varmeveksleren blive bremset op, hvilket giver en effektiv kon- DK 171475 B1 4 vektion.By, as defined in claim 4, deflecting the lower part of the plate, the discharge velocity of the flue gases below the heat exchanger will be slowed down, which provides an effective conduction.
Endelig er det hensigtsmæssigt, som omhandlet i krav 5, at lade spalten have en relativt lille bredde, idet luftha-5 stigheden gennem spalten derved øges ganske betydeligt på grund af luftens opvarmning og deraf følgende volumenfølelse. Herved opnås den kraftigst mulige luftstrømning.Finally, as claimed in claim 5, it is appropriate to leave the gap a relatively small width, as the air velocity through the gap is thereby increased quite significantly due to the warming of the air and consequent volume sensing. This results in the strongest possible air flow.
Tegningen 10Drawing 10
Et udførelseseksempel ifølge opfindelsen vil blive forklaret nærmere i den efterfølgende beskrivelse under henvisning til tegningen, hvor: 15 Fig. 1 viser en ovn ifølge opfindelsen set forfra, fig. 2 viser et snit igennem ovnen set i retning II-II på fig. 1, og 20 fig. 3 viser et forstørret snitbillede gennem varmeveks leren .An embodiment of the invention will be explained in more detail in the following description with reference to the drawing, in which: 1 is a front view of an oven according to the invention; FIG. 2 shows a section through the furnace seen in direction II-II of FIG. 1, and FIG. 3 shows an enlarged sectional view through the heat exchanger.
Beskrivelse af udførelseseksemplet 25 På fig. 1 er en brændeovn 1 vist set forfra. I eksemplet har den en låge, som er forsynet med et transparent glasparti 4, indfældet i en ramme 3. Ovnlågen kan åbnes og lukkes, og ildstedet kan observeres gennem glasset.Description of Embodiment 25 In FIG. 1 is a front view of a stove 1. In the example, it has a door, which is provided with a transparent glass portion 4, recessed into a frame 3. The oven door can be opened and closed and the fireplace can be observed through the glass.
30 Under låget er der monteret en luftventil 5, og ved ovnens top ses tilslutningen 6 for et ikke vist aftræksrør.30 An air valve 5 is mounted under the lid, and at the top of the oven, the connection 6 is shown for a vent pipe not shown.
Endelig er der over lågen en aflang spalteåbning 7 med en bagved liggende forskydelig spjældplade 2, som kan forsky-35 des ved hjælp af et påmonteret håndtag 8.Finally, above the door there is an elongated slit opening 7 with a sliding sliding plate 2 which can be slid behind, which can be displaced by means of a mounted handle 8.
Med stiplet streg er varmeveksleren antydet beliggende bag spalteåbningen 7.With a dashed line, the heat exchanger is indicated behind the gap opening 7.
5 DK 171475 B1 På fig. 2 ses ovnens indre. Brændkammeret 19, som strækker 5 sig i ovnens indre er i det viste eksempel udmuret på almindelig kendt måde.5 DK 171475 B1 In FIG. 2 shows the interior of the oven. In the example shown, the combustion chamber 19 which extends 5 into the interior of the furnace is walled in a generally known manner.
Endvidere ses varmeveksleren i form af en kasse 12, som er åben fortil og forsynet med befæstigelseslasker 10 omkring 10 lufttilgangsåbningen, som antydet på fig. 1.Further, the heat exchanger is seen in the form of a box 12 which is open at the front and provided with fastening lugs 10 about 10 the air inlet opening, as indicated in FIG. First
Selve kassen 12 er befæstiget til ovnens forparti 23 ved hjælp af bolte eller skruer 11. Varmeveksleren vil senere blive nærmere beskrevet.The box 12 itself is attached to the front portion 23 of the furnace by means of bolts or screws 11. The heat exchanger will be described in more detail later.
15 På kassens 12 bagvæg 26 er monteret en plade 17, som langs bagkanten er nedadbukket til dannelse af en afgrænsning 18 for den strømmende røggas. Herved bliver røggassen dels op-bremset og dels vendt og ledt opad mod en i ovnen monteret 20 vendeplade 20, fastgjort til bagvæggen.15 A plate 17 is mounted on the rear wall 26 of the box 12, which is bent downwards along the trailing edge to form a boundary 18 for the flowing flue gas. Hereby the flue gas is partly braked and partly turned and directed upwards towards a turning plate 20 mounted in the furnace 20, attached to the rear wall.
Denne plade leder de opadstrømmende gasser hen over varmevekslerens overside, og derfra tilbage, før de forlader ovnen gennem aftrækket 6.This plate directs the upstream gases over the upper side of the heat exchanger and from there back before leaving the furnace through the stove 6.
2525
Selve varmeveksleren vil herefter blive nærmere beskrevet under henvisning til fig. 3. Kassen 12 er udformet som en rektangulær kasse, som er relativt flad, og, som det er vist på tegningen, er udformet af et svøb og en bund.The heat exchanger itself will then be further described with reference to FIG. 3. The box 12 is formed as a rectangular box which is relatively flat and, as shown in the drawing, is formed of a casing and a bottom.
3030
Inde i kassen er der fastgjort en mellemvæg 9, som forløber fra den åbne forende og indtil et stykke fra bagvæggen 26. Herved opdeles kammeret i et øvre kammer 13, som udmunder direkte ved spalteåbningen 7, og efter strømningen gennem 35 kammeret ledes ned i et nedre kammer 14, som fortil udmunder i en tragtlignende spalte 15, idet pladen fortil er DK 171475 B1 6 nedadbukket 16 til dannelse af en skrå sidevæg. Vinklen på den nedadbukkede del 16 er afhængig af højden af den enkelte ovns brændkammer 19, idet det er vigtigt, at den del af luftstrømmen, som skal udgøre den primære luft, når ind i 5 forbrændingsovnen i tilstrækkelig mængde.Inside the box is mounted an intermediate wall 9 extending from the open end up to a distance from the rear wall 26. This divides the chamber into an upper chamber 13 which opens directly at the slot opening 7 and, after flowing through the chamber, is led into a lower chamber 14, which opens at the front into a funnel-like slot 15, the plate at the front being downwardly bent 16 to form an inclined side wall. The angle of the downwardly bent portion 16 is dependent on the height of the individual furnace's combustion chamber 19, since it is important that the portion of the air stream which is to constitute the primary air reaches the incinerator in sufficient quantity.
Bredden af spalten 15 tilpasses efter udstrækningen af glaspartiet 4 og vil normalt være mellem 5 og 7 mm, altså væsentlig mindre end kammerets 14 lysning.The width of the slot 15 is adjusted to the extent of the glass portion 4 and will normally be between 5 and 7 mm, thus substantially smaller than the illumination of the chamber 14.
1010
Mellem forpartiet 23 og befæstigelseslasken 10 er der indlagt en pakning eller pakningssnor 27 til sikring af lufttætheden .A gasket or gasket 27 is provided between the front portion 23 and the attachment lug 10 to ensure air tightness.
15 Når ovnen optændes, kan såvel den nederste luftventil 5 som skydespjældet 7 være fuldt åbnet. Herved ledes der rigeligt med primærluft til bålet. Når brændslet er antændt og brænder, kan den nederste luftventil 5 lukkes. Herefter vil den luft 25, som ledes gennem varmeveksleren, kunne levere den 20 nødvendige primær- og sekundærluft til bålet.15 When the oven is lit, both the lower air valve 5 and the damper 7 can be fully opened. This provides plenty of primary air for the fire. When the fuel is ignited and burning, the lower air valve 5 can be closed. Thereafter, the air 25 passed through the heat exchanger will be able to supply the required 20 primary and secondary air to the fire.
Når luften 21 suges ind gennem spalteåbningen 7, føres den først gennem det øverste kammer 13, som bestryges af røggassen 28, før denne forlader ovnen til aftrækket.When the air 21 is sucked in through the gap opening 7, it is first passed through the upper chamber 13, which is coated by the flue gas 28, before leaving the furnace for the extractor.
2525
Herved forvarmes luften 22, hvorefter den føres ned i det underste kammer 14, hvor den højere lufttemperatur på indtil 250°C nås, når ovnen er i drift.Hereby, the air 22 is preheated, and then it is lowered into the lower chamber 14, where the higher air temperature of up to 250 ° C is reached when the oven is in operation.
30 Herved fordobles luftvolumenet, og da udløbsspalten 15 har en reduceret udstrømningslysning i forhold til kammeret 14, bliver strømningshastigheden af den varme luft 24 meget betydelig. Dette giver den effektive strømning langs glaspartiets 4 bagside, som derved opvarmes til over 150°C, hvor-35 ved enhver risiko for sod- og kondensering er udelukket.30 The volume of air is thereby doubled, and since the outlet slot 15 has a reduced outflow illumination relative to the chamber 14, the flow rate of the hot air 24 becomes very considerable. This provides the efficient flow along the back side of the glass portion, which is thereby heated to above 150 ° C, whereby any risk of soot and condensation is excluded.
DK 171475 B1 7DK 171475 B1 7
Denne høje luftstrømning og temperatur har det ikke hidtil været muligt at opnå ved de kendte varmevekslere.This high air flow and temperature has so far not been possible to achieve with the known heat exchangers.
Herefter udnyttes den varme udstrømningsluft 25 til primær-5 og sekundærluft, hvorved den fuldstændige forbrænding opnås samtidig med, at glaspartiet effektivt holdes rent.Thereafter, the hot effluent air 25 is used for primary-5 and secondary air, whereby the complete combustion is obtained while keeping the glass portion effectively clean.
Herved bliver virkningsgraden meget høj, medens vedligeholdelsesbehovet er minimalt.As a result, the efficiency becomes very high, while the maintenance requirement is minimal.
1010
Claims (5)
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DK153591A DK171475B1 (en) | 1991-08-30 | 1991-08-30 | Fireplaces with glass partition and cleaning means |
| DE1992607680 DE69207680T2 (en) | 1991-08-30 | 1992-08-21 | Wood stove with glass part and means for cleaning it |
| EP19920610059 EP0530126B1 (en) | 1991-08-30 | 1992-08-21 | Woodburning stove with glass portion and means for the cleaning thereof |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DK153591 | 1991-08-30 | ||
| DK153591A DK171475B1 (en) | 1991-08-30 | 1991-08-30 | Fireplaces with glass partition and cleaning means |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| DK153591D0 DK153591D0 (en) | 1991-08-30 |
| DK153591A DK153591A (en) | 1993-03-01 |
| DK171475B1 true DK171475B1 (en) | 1996-11-11 |
Family
ID=8105839
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DK153591A DK171475B1 (en) | 1991-08-30 | 1991-08-30 | Fireplaces with glass partition and cleaning means |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP0530126B1 (en) |
| DE (1) | DE69207680T2 (en) |
| DK (1) | DK171475B1 (en) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2912491A1 (en) * | 2007-02-13 | 2008-08-15 | Labattu Michel | Frontal secondary air preheating device for e.g. wood-burning stove, has container with bends and air passages to allow free circulation of frontal secondary air in device in zigzag manner, where air passages are constituted of openings |
| AT504892B1 (en) | 2007-10-04 | 2008-09-15 | Windhager Zentralheizung Techn | RAUMHEIZEINRICHTUNG |
| CA2691409C (en) * | 2009-01-31 | 2018-07-03 | Landy Vent Uk Limited | Combustion apparatus |
| ITRA20090011A1 (en) * | 2009-03-24 | 2010-09-25 | Malta Ing Michele | CONDENSING STOVE |
| EP2455666A1 (en) | 2010-11-17 | 2012-05-23 | József Simkó | Closed stove with improved efficiency |
| DE202011051990U1 (en) | 2011-11-16 | 2012-01-18 | Lars Betzner | Stove with improved efficiency |
| CN104390242A (en) * | 2014-11-10 | 2015-03-04 | 昆山富凌能源利用有限公司 | Secondary oxygen supply energy saving oven core |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4343289A (en) * | 1980-03-21 | 1982-08-10 | Zimmerman Valentine J | Wood burning stove |
| AT377597B (en) * | 1981-07-31 | 1985-04-10 | Kent Heating Ltd | OVEN |
| US4683868A (en) * | 1986-04-09 | 1987-08-04 | Vermont Castins, Inc. | Wood burning stove having glass cleaning system |
| GB8615153D0 (en) * | 1986-06-20 | 1986-07-23 | Ti Parkray Ltd | Solid fuel heating appliances |
| AT403318B (en) * | 1989-02-10 | 1998-01-26 | Karl Stefan Riener | OVEN WITH AN INSERT DIVIDING THE COMBUSTION CHAMBER |
-
1991
- 1991-08-30 DK DK153591A patent/DK171475B1/en not_active IP Right Cessation
-
1992
- 1992-08-21 DE DE1992607680 patent/DE69207680T2/en not_active Expired - Fee Related
- 1992-08-21 EP EP19920610059 patent/EP0530126B1/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| EP0530126A3 (en) | 1993-05-12 |
| DE69207680T2 (en) | 1996-08-14 |
| DK153591D0 (en) | 1991-08-30 |
| EP0530126B1 (en) | 1996-01-17 |
| DE69207680D1 (en) | 1996-02-29 |
| DK153591A (en) | 1993-03-01 |
| EP0530126A2 (en) | 1993-03-03 |
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