EP4001766A1 - Procédé d'optimisation de la récupération de la chaleur perdue d'un four à combustion - Google Patents

Procédé d'optimisation de la récupération de la chaleur perdue d'un four à combustion Download PDF

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Publication number
EP4001766A1
EP4001766A1 EP20207416.7A EP20207416A EP4001766A1 EP 4001766 A1 EP4001766 A1 EP 4001766A1 EP 20207416 A EP20207416 A EP 20207416A EP 4001766 A1 EP4001766 A1 EP 4001766A1
Authority
EP
European Patent Office
Prior art keywords
furnace
air
combustion chamber
optimizing
room
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.)
Pending
Application number
EP20207416.7A
Other languages
German (de)
English (en)
Inventor
Andreas Neudeck
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.)
Haas und Sohn Ofentechnik GmbH
Original Assignee
Haas und Sohn Ofentechnik GmbH
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 Haas und Sohn Ofentechnik GmbH filed Critical Haas und Sohn Ofentechnik GmbH
Priority to EP20207416.7A priority Critical patent/EP4001766A1/fr
Publication of EP4001766A1 publication Critical patent/EP4001766A1/fr
Pending legal-status Critical Current

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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
    • F24B7/00—Stoves, ranges or flue-gas ducts, with additional provisions for convection heating 
    • F24B7/02—Stoves, ranges or flue-gas ducts, with additional provisions for convection heating  with external air ducts
    • F24B7/025—Stoves, ranges or flue-gas ducts, with additional provisions for convection heating  with external air ducts with forced circulation
    • 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
    • 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
    • F24B1/18—Stoves with open fires, e.g. fireplaces
    • F24B1/185—Stoves with open fires, e.g. fireplaces with air-handling means, heat exchange means, or additional provisions for convection heating ; Controlling combustion
    • F24B1/188—Stoves with open fires, e.g. fireplaces with air-handling means, heat exchange means, or additional provisions for convection heating ; Controlling combustion characterised by use of heat exchange means , e.g. using a particular heat exchange medium, e.g. oil, gas  
    • F24B1/1885—Stoves with open fires, e.g. fireplaces with air-handling means, heat exchange means, or additional provisions for convection heating ; Controlling combustion characterised by use of heat exchange means , e.g. using a particular heat exchange medium, e.g. oil, gas   the heat exchange medium being air only
    • F24B1/1888—Stoves with open fires, e.g. fireplaces with air-handling means, heat exchange means, or additional provisions for convection heating ; Controlling combustion characterised by use of heat exchange means , e.g. using a particular heat exchange medium, e.g. oil, gas   the heat exchange medium being air only with forced circulation

Definitions

  • the invention relates to a method for optimizing the use of waste heat from a combustion furnace according to the preamble of claim 1.
  • Pellets Furnaces for burning wood and pressed biological combustion products, hereinafter generally referred to as "pellets", are enjoying increasing popularity due to the energy sources mostly coming from regenerative raw material sources and the often lower operating costs compared to other forms of heat generation. Another important reason for purchasing an incinerator is the pleasant interaction of convection and radiant heat, which cannot be imitated in this form by electric ovens due to the lower maximum temperature. An important aspect when operating a stove is the rapid and even heating of the room to be heated. There are several approaches to achieve optimal through-warming.
  • a wood-burning stove which causes a forced circulation of the room air through a ventilation device, which is heated inside the stove and exits again at the bottom of the stove.
  • the disadvantage of this is that the air is sucked in from above and on the way down only briefly comes into contact with the furnace areas that are heated by the flue gas.
  • the heated room air is blown out in a concentrated manner in the lower area of the stove, which leads to poorer and, above all, more uneven heating of the room air.
  • the 1 shows a perspective view of an oven 1 from its front side with a schematic progression of the room air to be heated inside which is represented by arrows.
  • the incoming air masses 8 are heated by counterflowing air masses 9, which have been heated by the heat exchanger 3 and flow downwards.
  • the 2 shows a perspective view of a furnace 1 with a schematic course of the counterflowing air masses 9 inside the furnace 1 from the rear.
  • the air masses 8 entering in the floor area at openings 2 and/or through openings in the area of the lower half of the furnace 1 (not shown) (see 1 ) flows past the heat exchanger 1 and is then sucked in past the combustion chamber 5 by the negative pressure generated by the induced draft fan 4 and finally in the lower half of the furnace 1 through a blow-out opening 6 (see 1 ) blown into the room.
  • the bidirectional, U-shaped in the broadest sense, air flow and the resulting possible interaction of rising warm air 7 in the upper area of the furnace 1 and additionally blown out warm air 10 in the lower area of the furnace 1 can be achieve more even and faster heating. It is also possible to lead the blow-out opening 6 into another room, so that the rising warm air 7 and the warm air 10 that is blown out heat different rooms.
  • the ratio of the warm air 7 rising above to the amount of warm air 10 blown out below can be changed via the negative pressure that is created by the induced draft fan 4 . It is thus possible not to extract any air from the upper area of the furnace 1 (when the induced draft fan is at a standstill), all the warm air then escapes from the top of the furnace 1 by convection.
  • Exemplary possibilities include the measurement of a required pressure at a specific point, a pressure drop between two or more measurement points within the furnace 1, the measurement of specific temperatures or temperature distributions in the heated space, the speed of the sucked in or blown out air, or its air mass flow. These examples are enumerative and should not be considered exhaustive. In principle, all methods known from the prior art can be considered.
  • the socket shown is an exemplary embodiment, and the invention is not limited to this embodiment.
  • flue gas is considered to be the entirety of all substances that are produced by combustion and are present as a gaseous phase (e.g. CO, CO 2 , water vapour,...), or suspended in it (e.g. fine dust particles, floating embers,). , pass into the environment.
  • gaseous phase e.g. CO, CO 2 , water vapour, etc.
  • suspended in it e.g. fine dust particles, floating embers,
  • the combustion chamber is the space where the flames are visually visible.
  • the combustion chamber is used to heat the flue gas, on the other hand, the combustion chamber is often separated from the environment by a transparent pane, whereby the visual effect of an open fireplace, but without the associated risks.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Air Supply (AREA)
EP20207416.7A 2020-11-13 2020-11-13 Procédé d'optimisation de la récupération de la chaleur perdue d'un four à combustion Pending EP4001766A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP20207416.7A EP4001766A1 (fr) 2020-11-13 2020-11-13 Procédé d'optimisation de la récupération de la chaleur perdue d'un four à combustion

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP20207416.7A EP4001766A1 (fr) 2020-11-13 2020-11-13 Procédé d'optimisation de la récupération de la chaleur perdue d'un four à combustion

Publications (1)

Publication Number Publication Date
EP4001766A1 true EP4001766A1 (fr) 2022-05-25

Family

ID=73448853

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20207416.7A Pending EP4001766A1 (fr) 2020-11-13 2020-11-13 Procédé d'optimisation de la récupération de la chaleur perdue d'un four à combustion

Country Status (1)

Country Link
EP (1) EP4001766A1 (fr)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0102011A2 (fr) 1982-08-27 1984-03-07 PIAZZETTA S.p.A. Cheminée et poêle avec récupération de chaleur des gazes de combustion
US4438756A (en) * 1982-12-13 1984-03-27 Joseph G. Chamberlain Apparatus and method for accomplishing efficient burning of biomass fuel materials
CZ23327U1 (cs) * 2011-09-21 2012-01-26 Timpex Spol. S.R.O. Topné zařízení pro vytápění interiérových prostor
KR200474068Y1 (ko) * 2013-03-18 2014-08-19 김태섭 열교환 환기 기능을 하는 벽난로

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0102011A2 (fr) 1982-08-27 1984-03-07 PIAZZETTA S.p.A. Cheminée et poêle avec récupération de chaleur des gazes de combustion
US4438756A (en) * 1982-12-13 1984-03-27 Joseph G. Chamberlain Apparatus and method for accomplishing efficient burning of biomass fuel materials
CZ23327U1 (cs) * 2011-09-21 2012-01-26 Timpex Spol. S.R.O. Topné zařízení pro vytápění interiérových prostor
KR200474068Y1 (ko) * 2013-03-18 2014-08-19 김태섭 열교환 환기 기능을 하는 벽난로

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