DE4419345A1 - Atmospheric gas burner - Google Patents

Atmospheric gas burner

Info

Publication number
DE4419345A1
DE4419345A1 DE19944419345 DE4419345A DE4419345A1 DE 4419345 A1 DE4419345 A1 DE 4419345A1 DE 19944419345 DE19944419345 DE 19944419345 DE 4419345 A DE4419345 A DE 4419345A DE 4419345 A1 DE4419345 A1 DE 4419345A1
Authority
DE
Germany
Prior art keywords
gas
air
atmospheric gas
combustion air
characterized
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.)
Withdrawn
Application number
DE19944419345
Other languages
German (de)
Inventor
Hans-Joachim Dipl I Ripplinger
Wilfried Dipl Ing Sikorra
Hartmut Dipl Ing Asmann
Ba Dipl Ing Lam-Thien
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.)
Bosch Thermotechnik GmbH
Original Assignee
Bosch Thermotechnik 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 Bosch Thermotechnik GmbH filed Critical Bosch Thermotechnik GmbH
Priority to DE19944419345 priority Critical patent/DE4419345A1/en
Priority claimed from DE19944436021 external-priority patent/DE4436021A1/en
Publication of DE4419345A1 publication Critical patent/DE4419345A1/en
Withdrawn legal-status Critical Current

Links

Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23DBURNERS
    • F23D14/00Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid
    • F23D14/46Details, e.g. noise reduction means
    • F23D14/62Mixing devices; Mixing tubes
    • F23D14/64Mixing devices; Mixing tubes with injectors
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23DBURNERS
    • F23D14/00Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid
    • F23D14/02Premix gas burners, i.e. in which gaseous fuel is mixed with combustion air upstream of the combustion zone
    • F23D14/04Premix gas burners, i.e. in which gaseous fuel is mixed with combustion air upstream of the combustion zone induction type, e.g. Bunsen burner
    • F23D14/10Premix gas burners, i.e. in which gaseous fuel is mixed with combustion air upstream of the combustion zone induction type, e.g. Bunsen burner with elongated tubular burner head
    • F23D14/105Premix gas burners, i.e. in which gaseous fuel is mixed with combustion air upstream of the combustion zone induction type, e.g. Bunsen burner with elongated tubular burner head with injector axis parallel to the burner head axis

Abstract

The supply duct is connected to a combustion boiler of the essentially closed type, for installation in a room of a building, and for opening out into the atmosphere. The ducts are in fluid communication of a transition part with controllable shut-off element if the shut-off element is in the open position. The shut-off element is controlled between the open and the closed position depending on the pressure prevailing in the air supply duct. A combustion air injection duct (4) runs between the combustion boiler and the combustion air discharge duct. The combustion air injection duct opens out into the combustion air discharge duct downstream of the place where the transition part opens out into the combustion air supply duct.

Description

The invention relates to an atmospheric gas burner according to the preamble of claim 1.

A gas burner of this type can be found in DE 39 18 855 A1. The feed The primary air is used as a function of the flame temperature size controlled by a blower and adjusted to a suitable size posed. A similar burner is also shown in DE 37 07 259 A1. There is one additional safety circuit is provided, which under the combustion stops at a specified amount of air.

DE 43 08 657 A1 also discloses the supply of primary air by fans sea support. In this case, an air stream crosses the gas stream. At off As the fan falls, the gas stream sucks the gas that is absolutely necessary for combustion already adopted primary air volume itself, so that never a critical situation with acute lack of air arises.

Finally, reference is made to the unpublished P 43 41 029.4 sen, according to which the gas nozzle is arranged centrally in the larger air nozzle. The gas flow is encased here by the air flow. If the fan fails Here, too, the absolutely necessary amount of primary air can be determined by the kinetic Energy of the gas jet can be sucked in directly.

The invention has for its object to provide a simply constructed atmospheric gas burner with a blower support of the primary air supply, in which the safety requirements are met and has the optimal combustion results in terms of NO x emissions.

The gas burner according to the invention has the Pa Tent claim 1 mentioned features.

The mouth of the burner tube is connected to the fan by one surrounding air chamber. At least one of these flows opening in the gas flow. The air supply is very simple and targeted, namely immediately at the entry of the burner tube. Since the gas nozzle has an adequate The gas jet will be at a distance from the confluence of the burner tube first suck in the absolutely necessary amount of primary air. He will then additional primary air in the appropriate place in the appropriate manner fed through the blower. Even a fan failure never leads to burns technical problems, because without the blower support there are no problems table mixture composition arises. Since the gas nozzle is freely accessible, it is also easy to change the nozzle.

It is possible to have a single flow opening in the wall of the air chamber watch. It is also possible to have a plurality of opposing flow openings are available that can possibly lead to a swirl flow nen. The formation of the flow opening as a circumferential annular gap leads to enveloping the gas-air flow. Guiding elements can be an oblique one lead the air flow conveyed by the blower with a good mix effect.

A Venturi tube is usually located in the burner tube. In this case the air is sitting chamber at the entrance of the Venturi tube. With this you can have a structural unit form.

The drawing shows a longitudinal section through a one in a single figure mouth area of a burner tube.  

The burner tube 1 has an air chamber 2 surrounding the mouth with an air inlet 3 and a flow opening 4 . The gas flows out of the gas nozzle 5 and sucks in the absolutely necessary primary air itself due to the kinetic energy. Depending on the measured over a temperature sensor 6 NEN flame temperature or also on the basis of another command variable, a blower 7 provides more or less strong support with additional primary air. In the exemplary embodiment, the flow opening 4 is designed as an annular gap with guide elements 8 . The air flow enters the gas flow at a predetermined angle.

Claims (4)

1. Atmospheric gas burner with at least one burner tube ( 1 ) and a gas nozzle ( 5 ) arranged at a distance from its junction with direct primary air intake and with an additional primary air supply supported by a blower ( 7 ), characterized in that the mouth region of the burner tube ( 1 ) is surrounded by an air chamber ( 2 ) which is connected to the blower ( 7 ) and has at least one flow opening ( 4 ) leading into the gas stream.
2. Atmospheric gas burner according to claim 1, characterized in that the flow opening ( 4 ) is formed as a circumferential annular gap to form an air stream enveloping the gas stream.
3. Atmospheric gas burner according to claims 1 and 2, characterized in that the circumferential annular gap guide elements ( 8 ) are assigned to the formation of an obliquely or helically into the gas stream introduced air stream.
4. Atmospheric gas burner according to claim 1, characterized in that the air chamber ( 2 ) forms the front part of a venturi tube arranged in the burner tube ( 1 ).
DE19944419345 1994-06-03 1994-06-03 Atmospheric gas burner Withdrawn DE4419345A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE19944419345 DE4419345A1 (en) 1994-06-03 1994-06-03 Atmospheric gas burner

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE19944419345 DE4419345A1 (en) 1994-06-03 1994-06-03 Atmospheric gas burner
DE19944436021 DE4436021A1 (en) 1994-06-03 1994-10-08 Atmospheric gas burner
DE19507692A DE19507692A1 (en) 1994-06-03 1995-03-04 Atmospheric burner with burner tubes
EP95105898A EP0685684A3 (en) 1994-06-03 1995-04-20 Atmospheric gas burner.

Publications (1)

Publication Number Publication Date
DE4419345A1 true DE4419345A1 (en) 1995-12-07

Family

ID=6519652

Family Applications (2)

Application Number Title Priority Date Filing Date
DE19944419345 Withdrawn DE4419345A1 (en) 1994-06-03 1994-06-03 Atmospheric gas burner
DE19507692A Ceased DE19507692A1 (en) 1994-06-03 1995-03-04 Atmospheric burner with burner tubes

Family Applications After (1)

Application Number Title Priority Date Filing Date
DE19507692A Ceased DE19507692A1 (en) 1994-06-03 1995-03-04 Atmospheric burner with burner tubes

Country Status (1)

Country Link
DE (2) DE4419345A1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1997040315A1 (en) 1996-04-20 1997-10-30 Joh. Vaillant Gmbh U. Co. COMBUSTION DEVICE AND METHOD FOR OPERATING A COMBUSTION DEVICE FOR LOW-NOx AND LOW-CO COMBUSTION
DE19822336A1 (en) * 1998-05-19 1999-11-25 Bosch Gmbh Robert Method and device for operating an atmospheric, in particular fully premixed gas burner

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19743464C1 (en) * 1997-10-01 1998-11-12 Honeywell Bv Venturi nozzle for mixing gas-burner air-gas charge

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1997040315A1 (en) 1996-04-20 1997-10-30 Joh. Vaillant Gmbh U. Co. COMBUSTION DEVICE AND METHOD FOR OPERATING A COMBUSTION DEVICE FOR LOW-NOx AND LOW-CO COMBUSTION
DE19822336A1 (en) * 1998-05-19 1999-11-25 Bosch Gmbh Robert Method and device for operating an atmospheric, in particular fully premixed gas burner
DE19822336C2 (en) * 1998-05-19 2001-08-16 Bosch Gmbh Robert Device for operating an atmospheric, in particular fully premixed gas burner

Also Published As

Publication number Publication date
DE19507692A1 (en) 1996-09-05

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