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EP3164641A1 - Combustion chamber for a gas-fired heat exchanger - Google Patents

Combustion chamber for a gas-fired heat exchanger

Info

Publication number
EP3164641A1
EP3164641A1 EP15742402.9A EP15742402A EP3164641A1 EP 3164641 A1 EP3164641 A1 EP 3164641A1 EP 15742402 A EP15742402 A EP 15742402A EP 3164641 A1 EP3164641 A1 EP 3164641A1
Authority
EP
European Patent Office
Prior art keywords
combustion chamber
burner
gas
heat exchanger
perforated wall
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
EP15742402.9A
Other languages
German (de)
French (fr)
Other versions
EP3164641B1 (en
Inventor
Tomasz Siemienczuk
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.)
AIC Sp zoo
Original Assignee
AIC Sp zoo
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 AIC Sp zoo filed Critical AIC Sp zoo
Publication of EP3164641A1 publication Critical patent/EP3164641A1/en
Application granted granted Critical
Publication of EP3164641B1 publication Critical patent/EP3164641B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23D—BURNERS
    • F23D14/00—Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid
    • F23D14/34—Burners specially adapted for use with means for pressurising the gaseous fuel or the combustion air
    • F23D14/36—Burners specially adapted for use with means for pressurising the gaseous fuel or the combustion air in which the compressor and burner form a single unit
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23D—BURNERS
    • F23D14/00—Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid
    • F23D14/02—Premix gas burners, i.e. in which gaseous fuel is mixed with combustion air upstream of the combustion zone
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23D—BURNERS
    • F23D2203/00—Gaseous fuel burners
    • F23D2203/10—Flame diffusing means
    • F23D2203/102—Flame diffusing means using perforated plates
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23D—BURNERS
    • F23D2203/00—Gaseous fuel burners
    • F23D2203/10—Flame diffusing means
    • F23D2203/105—Porous plates

Definitions

  • the invention concerns a combustion chamber for a gas-fired heat exchanger.
  • combustion chamber in gas-fired heat exchangers is either thermally insulated or cooled with a working fluid.
  • Known from the patent document PL205535 Bl is a device designated for a gas-fired water heater.
  • the combustion chamber of the device is made of an insulating material, such as ceramic, and at least part of the heat exchanger is made of metal, such as copper or aluminum.
  • the combustion chamber and the heat exchanger are connected to each other.
  • the combustion chamber has slots to accommodate the heating elements going through the opposite walls of the combustion chamber through those very slots.
  • the collectors used to connect separate heating elements one to another inside the heat exchanger are installed outside the walls of the combustion chamber.
  • a combustion chamber for a gas-fired heat exchanger according to the invention open on one side and fitted with a burner, is characterised in that there is a free space formed between its inner and outer jackets to accommodate the mixture of gas and air supplied to the burner, where the latter is fitted with a perforated wall and where there is a ventilator and a gas valve mounted in the outer jacket.
  • the burner is located in the upper part of the combustion chamber and forms a separate part connected to the space accommodating the mixture of gas and air, formed between the inner and outer jackets of the combustion chamber, with an element which supplies the gas-air mixture to the burner.
  • the inner jacket encases the interiour of the combustion chamber on all sides and has a perforated area which is a perforated wall of the burner, where preferably the latter is either formed in the upper part of the inner jacket, or encases the interiour of the combustion chamber on all sides.
  • the outer jacket and/or inner jacket is fitted with a flange for the mounting of the combustion chamber on the heat exchanger subassembly.
  • the perforated wall of the burner is made of a material resistant to high temperatures, preferably of a perforated steel sheet and/or mesh and/or a woven and/or non-woven material.
  • the structure of the combustion chamber according to the invention allows even pumping of the gas-air mixture through the openings in the perforated wall of the inner jacket into the interiour of the combustion chamber and controlling the flow of the mixture thanks to which it is possible to obtain the requested burning parameters, the size of the flame included, and contain the area of burning within the interiour of the combustion chamber only. Moreover, the gas and cold air pumped into the space between the outer and inner jackets cool the combustion chamber adequately while flowing around the inner jacket. Since the combustion chamber may be given any desired shape, it can be used together with any heat exchanger sub-assembly irrespective of its shape.
  • Fig. 1, Fig. 3, Fig.5, and Fig. 7 show the combustion chamber in the axonometric projection with a view of the inside, installed on a heat exchanger sub-assembly, and Fig.2, Fig. 4, Fig. 6, and Fig. 8 - an axial section of the combustion chamber depicted on Fig. l , Fig. 3, Fig. 5, Fig.7, respectively.
  • the combustion chamber for a gas-fired heat exchanger is open on one side and on that side it is installed on the heat exchanger subassembly 7.
  • the chamber has inner jacket 2 and outer jacket 1 , between which space 3 is formed to accommodate the mixture of gas and air supplied to the burner 4.
  • the burner 4 is fitted with a perforated wall 5, through which the mixture is pumped into the interiour 8 of the
  • the burner is positioned in the upper part of the combustion chamber and forms a separate part 4.
  • the space 3 to accommodate the mixture of gas and air, formed between the outer jacket 1 and inner jacket 2 of the combustion chamber, is connected to the burner 4 with an element 1 1 C-shaped in cross-section, through which the gas-air mixture is supplied to the burner.
  • the burner is also positioned in the upper part of the combustion chamber and it also forms a separate part 4.
  • the space 3 for the mixture of gas and air which is formed between the outer jacket 1 and the inner jacket 2 of the combustion chamber is connected with bushings 12 through which the gas-air mixture is supplied to the burner.
  • the inner jacket 2 encases the interiour 8 of the combustion chamber on all sides and has a perforated area in its upper part, which is the perforated wall 5 of the burner.
  • the inner jacket 2 encases the interiour of the combustion chamber on all sides, where the perforations are made in all walls encasing the interiour and where the perforated area is the perforated wall 5 of the burner.
  • the outer jacket 1 and/or the inner jacket 2 are fitted with a flange 10 for the mounting of the
  • the perforated wall 5 of the burner is made of a material resistant to high temperatures, preferably of a perforated steel sheet and/or mesh and/or a woven and/or non-woven material.
  • the combustion chamber is mounted on the heat exchanger subassembly 7 using the flange 10.
  • the space 3 formed between the outer jacket 1 and inner jacket 2 is filled with air (using ventilator 6) and gas (through the gas valve).
  • air using ventilator 6
  • gas through the gas valve.
  • mixture of gas and air is then evenly pumped through the openings in the perforated wall 5 of the burner into the interiour 8 of the combustion chamber where it is burned, for example in effect of a spark-over between the electrode 9 and the earth electrode.
  • the mixture pumped into the space 3 between the outer jacket 1 and inner jacket 2 cools the inner jacket 2 and outer jacket 1 of the combustion chamber when flowing around the inner jacket 2, whereas the hot combustion gases get into the fuel exchanger sub-assembly 7, where it gives up their heat to the heated agent.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Gas Burners (AREA)

Abstract

A combustion chamber for a gas-fired heat exchanger according to the invention, open on one side and fitted with a burner, is characterised in that there is a space (3) formed between its inner jacket (2) and its outer jacket (1) to accommodate the mixture of gas and air supplied to the burner (4), where the latter is fitted with a perforated wall (5) and where there is a ventilator (6) and a gas valve mounted in the outer jacket (1). Preferably, the perforated wall (5) of the burner (4) is made of a material resistant to high temperatures, preferably a perforated steel sheet and/or mesh and/or a woven and/or non-woven material.

Description

Combustion chamber for a gas-fired heat exchanger
The invention concerns a combustion chamber for a gas-fired heat exchanger.
Today, the combustion chamber in gas-fired heat exchangers is either thermally insulated or cooled with a working fluid.
Known from the patent document PL205535 Bl is a device designated for a gas-fired water heater. The combustion chamber of the device is made of an insulating material, such as ceramic, and at least part of the heat exchanger is made of metal, such as copper or aluminum. The combustion chamber and the heat exchanger are connected to each other. The combustion chamber has slots to accommodate the heating elements going through the opposite walls of the combustion chamber through those very slots. The collectors used to connect separate heating elements one to another inside the heat exchanger are installed outside the walls of the combustion chamber.
Known from the patent document PL 172025 Bl is a water heating boiler in which the combustion chamber is fitted inside a double-wall pipe, where flat heat exchanger perforated with a large number of openings through which water gets in between the two wall pipes forms the lower section of the external pipe wall.
Known from the patent document PL396460A1 is a heat exchanger intended for a condensing boiler, fitted with an outer jacket with a combustion chamber installed inside in its upper part, where under the combustion chamber there is a set of vertical pipe elements anchored in sieve walls on both of their ends, and where the upper sieve wall serves as the bottom of the combustion chamber, while the space between the side wall of the combustion chamber and the outer jacket, and the space under the combustion chamber and around the set of pipe elements are
interconnected to form the fluid chamber.
A combustion chamber for a gas-fired heat exchanger according to the invention, open on one side and fitted with a burner, is characterised in that there is a free space formed between its inner and outer jackets to accommodate the mixture of gas and air supplied to the burner, where the latter is fitted with a perforated wall and where there is a ventilator and a gas valve mounted in the outer jacket.
Preferably, the burner is located in the upper part of the combustion chamber and forms a separate part connected to the space accommodating the mixture of gas and air, formed between the inner and outer jackets of the combustion chamber, with an element which supplies the gas-air mixture to the burner.
Preferably, the inner jacket encases the interiour of the combustion chamber on all sides and has a perforated area which is a perforated wall of the burner, where preferably the latter is either formed in the upper part of the inner jacket, or encases the interiour of the combustion chamber on all sides.
Preferably, the outer jacket and/or inner jacket is fitted with a flange for the mounting of the combustion chamber on the heat exchanger subassembly.
Preferably, the perforated wall of the burner is made of a material resistant to high temperatures, preferably of a perforated steel sheet and/or mesh and/or a woven and/or non-woven material.
The structure of the combustion chamber according to the invention allows even pumping of the gas-air mixture through the openings in the perforated wall of the inner jacket into the interiour of the combustion chamber and controlling the flow of the mixture thanks to which it is possible to obtain the requested burning parameters, the size of the flame included, and contain the area of burning within the interiour of the combustion chamber only. Moreover, the gas and cold air pumped into the space between the outer and inner jackets cool the combustion chamber adequately while flowing around the inner jacket. Since the combustion chamber may be given any desired shape, it can be used together with any heat exchanger sub-assembly irrespective of its shape.
These and other characteristics of the invention will be clear from the following description of a preferential form of embodiment, given as a non-restrictive example, with reference to the attached drawings wherein: Fig. 1, Fig. 3, Fig.5, and Fig. 7 show the combustion chamber in the axonometric projection with a view of the inside, installed on a heat exchanger sub-assembly, and Fig.2, Fig. 4, Fig. 6, and Fig. 8 - an axial section of the combustion chamber depicted on Fig. l , Fig. 3, Fig. 5, Fig.7, respectively.
The combustion chamber for a gas-fired heat exchanger is open on one side and on that side it is installed on the heat exchanger subassembly 7. The chamber has inner jacket 2 and outer jacket 1 , between which space 3 is formed to accommodate the mixture of gas and air supplied to the burner 4. There is a ventilator 6 and a gas valve mounted in the outer jacket. The burner 4 is fitted with a perforated wall 5, through which the mixture is pumped into the interiour 8 of the
combustion chamber.
In the first embodiment of the invention, shown on Fig. 1 and Fig. 3, the burner is positioned in the upper part of the combustion chamber and forms a separate part 4. The space 3 to accommodate the mixture of gas and air, formed between the outer jacket 1 and inner jacket 2 of the combustion chamber, is connected to the burner 4 with an element 1 1 C-shaped in cross-section, through which the gas-air mixture is supplied to the burner.
In another embodiment of the invention, shown on Fig. 3 and Fig. 4, the burner is also positioned in the upper part of the combustion chamber and it also forms a separate part 4. The space 3 for the mixture of gas and air which is formed between the outer jacket 1 and the inner jacket 2 of the combustion chamber is connected with bushings 12 through which the gas-air mixture is supplied to the burner.
In yet another embodiment of the invention shown on Fig. 5 and Fig. 6 the inner jacket 2 encases the interiour 8 of the combustion chamber on all sides and has a perforated area in its upper part, which is the perforated wall 5 of the burner.
In another embodiment shown on Fig. 7 and Fig. 8, the inner jacket 2 encases the interiour of the combustion chamber on all sides, where the perforations are made in all walls encasing the interiour and where the perforated area is the perforated wall 5 of the burner.
In all embodiments described above, the outer jacket 1 and/or the inner jacket 2 are fitted with a flange 10 for the mounting of the
combustion chamber on the heat exchanger sub-assembly 7.
In all embodiments described above, the perforated wall 5 of the burner is made of a material resistant to high temperatures, preferably of a perforated steel sheet and/or mesh and/or a woven and/or non-woven material.
The combustion chamber is mounted on the heat exchanger subassembly 7 using the flange 10. The space 3 formed between the outer jacket 1 and inner jacket 2 is filled with air (using ventilator 6) and gas (through the gas valve). Thus obtained mixture of gas and air is then evenly pumped through the openings in the perforated wall 5 of the burner into the interiour 8 of the combustion chamber where it is burned, for example in effect of a spark-over between the electrode 9 and the earth electrode. The mixture pumped into the space 3 between the outer jacket 1 and inner jacket 2 cools the inner jacket 2 and outer jacket 1 of the combustion chamber when flowing around the inner jacket 2, whereas the hot combustion gases get into the fuel exchanger sub-assembly 7, where it gives up their heat to the heated agent.

Claims

Claims
1. A combustion chamber for the gas-fired heat exchanger open on one side and fitted with a burner, characterised in that there is a space (3) formed between its inner jacket (2) and the outer jacket (1) to
accommodate the mixture of gas and air supplied to the burner (4), where the latter is fitted with a perforated wall (5), and where there is a
ventilator (6) and a gas valve mounted in the outer jacket (1).
2. The combustion chamber according to Claim 1, characterised in that the burner (4) is located in the upper part of the combustion chamber.
3. The combustion chamber according to Claim 2, characterised in that the burner forms a separate part (4) connected to the space (3)
accommodating the mixture of gas and air, formed between the inner jacket (2) and the outer jacket (1) of the combustion chamber with the element (11,12) which supplies the gas-air mixture to the burner.
4. The combustion chamber according to Claim 1, characterised in that the inner jacket (2) encases the interiour of the combustion chamber on all sides and has a perforated wall which is the perforated wall (5) of the burner.
5. The combustion chamber according to Claim 4, characterised in that the perforated wall (5) of the burner is formed in the upper part of the inner jacket (2).
6. The combustion chamber according to Claim 4, characterised in that the perforated wall (5) of the burner encases the interiour of the
combustion chamber on all sides.
7. The combustion chamber according to Claim 1, characterised in that the outer jacket (1) and/or the inner jacket (2) is fitted with a flange (10) for the mounting of the combustion chamber on the heat exchanger subassembly (7).
8. The combustion chamber according to Claims 1 or 4, characterised in that the perforated wall (5) of the burner is made of a material resistant to high temperatures, preferably of a perforated steel sheet and/or mesh and/or a woven and/or non-woven material.
EP15742402.9A 2014-07-02 2015-06-24 Combustion chamber for a gas-fired heat exchanger Active EP3164641B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
PL408739A PL225244B1 (en) 2014-07-02 2014-07-02 Combustion chamber for gas fired heat exchanger
PCT/PL2015/000097 WO2016003300A1 (en) 2014-07-02 2015-06-24 Combustion chamber for a gas-fired heat exchanger

Publications (2)

Publication Number Publication Date
EP3164641A1 true EP3164641A1 (en) 2017-05-10
EP3164641B1 EP3164641B1 (en) 2024-07-17

Family

ID=53758496

Family Applications (1)

Application Number Title Priority Date Filing Date
EP15742402.9A Active EP3164641B1 (en) 2014-07-02 2015-06-24 Combustion chamber for a gas-fired heat exchanger

Country Status (3)

Country Link
EP (1) EP3164641B1 (en)
PL (1) PL225244B1 (en)
WO (1) WO2016003300A1 (en)

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2120771B (en) * 1982-05-17 1985-08-29 Osaka Gas Co Ltd Surface combustion type burner
DE4239494A1 (en) 1992-04-18 1993-10-21 Richard Vetter Device for heating water, in particular hot water boiler
JP3308832B2 (en) * 1996-11-26 2002-07-29 東京瓦斯株式会社 Flame burner
KR100383115B1 (en) * 1999-12-15 2003-05-09 학교법인 인하학원 heat intensive type ceramic burner
FI111411B (en) 2001-10-24 2003-07-15 Outokumpu Oy Equipment for a hot water heater
DE102008055981A1 (en) * 2008-11-05 2010-05-06 Owi Oel-Waerme-Institut Ggmbh Method for reducing pollutant emissions e.g. carbon-monoxide emissions, of surface burner in combustion system, involves arranging or folding burner surface such that fluid is partially or completely passed through porous surfaces
KR101216807B1 (en) * 2010-11-25 2012-12-28 주식회사 경동나비엔 Cooling structure for combustion chamber using air intake
EP2742286B1 (en) * 2011-08-11 2019-11-20 Beckett Gas, Inc. Burner
PL220726B1 (en) 2011-09-29 2015-12-31 Aic Spółka Akcyjna Heat exchanger for a condensing boiler

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
None *
See also references of WO2016003300A1 *

Also Published As

Publication number Publication date
WO2016003300A1 (en) 2016-01-07
EP3164641B1 (en) 2024-07-17
PL225244B1 (en) 2017-03-31
PL408739A1 (en) 2016-01-04

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