EP0793058A2 - Mischrohr für Gasbrenner - Google Patents

Mischrohr für Gasbrenner Download PDF

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Publication number
EP0793058A2
EP0793058A2 EP97103204A EP97103204A EP0793058A2 EP 0793058 A2 EP0793058 A2 EP 0793058A2 EP 97103204 A EP97103204 A EP 97103204A EP 97103204 A EP97103204 A EP 97103204A EP 0793058 A2 EP0793058 A2 EP 0793058A2
Authority
EP
European Patent Office
Prior art keywords
forming
shell
flap
door
tube
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Withdrawn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
EP97103204A
Other languages
English (en)
French (fr)
Other versions
EP0793058A3 (de
Inventor
David Joseph Kwiatek
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.)
Eaton Corp
Original Assignee
Eaton Corp
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 Eaton Corp filed Critical Eaton Corp
Publication of EP0793058A2 publication Critical patent/EP0793058A2/de
Publication of EP0793058A3 publication Critical patent/EP0793058A3/de
Withdrawn legal-status Critical Current

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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
    • F23D14/46—Details
    • 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
    • F23D14/46—Details
    • F23D14/62—Mixing devices; Mixing tubes
    • F23D14/64—Mixing devices; Mixing tubes with injectors
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23D—BURNERS
    • F23D2213/00—Burner manufacture specifications

Definitions

  • the present invention relates to fuel/air mixture supply tubes for gas burners of the type employed for cooking and particularly for range top burners employed in household cooking appliances.
  • Burner assemblies for range tops typically employ a mixing tube for interconnecting a fuel gas source, such as a supply manifold to the individual burners employed on the range top.
  • the mixing tube assembly incorporates an aspirator for drawing in air to mix with the fuel gas flowing through the tube between the manifold and the burner to provide the desired fuel/air mixture for combustion at the burner.
  • the present invention provides a fuel/air mixture tube assembly for interconnecting a range top fuel gas burner to a fuel gas supply source such as a manifold.
  • the invention provides for aspirating air into the fuel gas flowing from the manifold to the burner and provides for an adjustment of the amount of entrained air to provide the correct fuel/air mixture for the desired burner flame characteristics.
  • the present invention provides a fuel/air mixing assembly for a fuel gas burner in which the mixing tube assembly is preferably formed of two half shells each stamped from a sheet of relatively thin material which are subsequently joined together to form an air mixing tube having one inlet end adapted for connection to a fuel gas source such as a manifold and the opposite outlet end adapted for connection to the burner inlet.
  • a flap or door is formed in a plenum at a location adjacent the inlet end for providing for intake of aspirated air. The flap or door may be deformed after assembly for adjusting the area of the air inlet.
  • the present invention thus provides a unique and novel technique for manufacturing at minimum cost a fuel/air mixture tube assembly for a range top gas burner.
  • a plurality of tube half shells are stamped in each of the pair of thin sheets of material such that upon joining the sheets, a plurality of burner tube assemblies are formed, although only a single mixer tube may be formed if desired.
  • the mixer tube assembly of the present invention is indicated generally at 10 and includes a first and second or upper and lower shells denoted by reference numerals 12, 14 which are preferably formed out of relatively thin sheet metal.
  • the upper shell 12 preferably comprises generally a half-shell and has certain portions thereof formed, preferably by stamping, as recesses or cavities denoted by reference numerals, 16 for an inlet end portion, 18 for a nozzle portion and 20 for an outlet portion.
  • the inlet portion is enlarged to form a plenum chamber; and, the nozzle portion 18 is a converging-diverging nozzle having a throat 22 with the diverging portion downstream of the throat formed integrally with the converging or tapered portion 20.
  • the lower shell 14 has a correspondingly located recessed portion 24 disposed opposite inlet portion 16 which communicates with a throat portion 26 which communicates with the diverging nozzle portion 28.
  • the diverging nozzle portion 28 communicates with an outlet portion 30 which communicates with the flanged aperture 32 formed in the upper half shell 12 over which is received an outlet tube or sleeve 34 which is secured thereon by any suitable expedient, as for example, swaging or expanding of the outlet flange 32 by inserting a tool in sleeve 34, or by welding.
  • lower shell 14 has another input plenum portion 36 formed thereon corresponding to the portion 16 which portion 36 also tapers to a throat 38 disposed opposite another throat 40 formed in the upper shell 12.
  • Lower shell 14 has another diverging nozzle portion 42 formed therein corresponding to upper shell nozzle portion 18.
  • the lower shell nozzle 42 communicates with another outlet portion 44 which corresponds to the outlet portion 30 and is disposed directly beneath the outlet portion 20.
  • Outlet portion 44 in the lower shell 14 communicates with a second outlet flange 46 denoted in dashed outline in FIG. 1 formed in the upper shell.
  • An outlet tube or sleeve 48 is received over flange 46 and secured thereon in a manner similar to the sleeve 34.
  • the upper and lower shells 12, 14 cooperate to form a pair of burner tubes having inlets indicated generally at 50, 52 and outlets at sleeves 34, 48 over which may be assembled the inlets of individual burners (not shown).
  • upper and lower shells 12, 14 may be joined by any suitable expedient as for example resistance welding or metal deformation.
  • the inlet end 50 of one of the mixer tubes is shown in enlarged detail wherein the inlet plenum 16 of the upper shell has a flap or door 54 integrally formed therein, preferably upon stamping of the upper shell, and which door is deformable from the position shown in sold outline to the position shown in dashed outline.
  • the flap 54 may be deformed by any suitable mechanical expedient as for example forming the door to the open position and thereafter adjusting the open position, as required for varying air flow, by means of a simple tool such as a screwdriver or pliers.
  • a second flap or door 56 is also formed in the inlet portion 24 of the lower shell 14 and may be similarly adjusted in the manner described above with respect to flap 54.
  • the illustrated embodiment includes a pair of mixer tubes for two burners, it will be understood that the invention may be embodied in a single burner tube. It will be further understood that alternatively, particularly for a single tube, that the tube may be roll formed from a single sheet of material instead of joining half shells.
  • the plenum and flap or door could be stamped in a sheet of material and the tube subsequently roll formed and the margins welded.
  • the present invention thus provides a unique and novel way of forming an air fuel mixing tube for a gaseous fuel burner from sheet material and preferably from a pair of stamped shells and joining the shells together forming a mixer tube having an inlet and an outlet.
  • the inlet portion of at least one of the shells has formed therein a flap or door which is mechanically deformable for varying the air inlet opening for air fuel mixing.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Gas Burners (AREA)
EP97103204A 1996-03-01 1997-02-27 Mischrohr für Gasbrenner Withdrawn EP0793058A3 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US60920396A 1996-03-01 1996-03-01
US609203 1996-03-01

Publications (2)

Publication Number Publication Date
EP0793058A2 true EP0793058A2 (de) 1997-09-03
EP0793058A3 EP0793058A3 (de) 1999-01-13

Family

ID=24439774

Family Applications (1)

Application Number Title Priority Date Filing Date
EP97103204A Withdrawn EP0793058A3 (de) 1996-03-01 1997-02-27 Mischrohr für Gasbrenner

Country Status (4)

Country Link
EP (1) EP0793058A3 (de)
CN (1) CN1160141A (de)
BR (1) BR9700327A (de)
CA (1) CA2198761A1 (de)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7363923B2 (en) 2005-01-05 2008-04-29 Illinois Tool Works Inc. cooking range assembly and monolithic drip pan
US7811082B2 (en) 2005-01-05 2010-10-12 Premark Feg, Llc Gas circuit and pilot light system for cooking range

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107062219A (zh) * 2017-03-27 2017-08-18 无锡小天鹅股份有限公司 燃烧器和具有其的干衣机
CN107816718A (zh) * 2017-11-10 2018-03-20 浙江帅康电气股份有限公司 一种大气式燃烧器

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB808323A (en) * 1956-03-28 1959-02-04 Parkinson & Cowan Ltd Improvements in or relating to burners for gas cookers
ES295089Y (es) * 1986-06-23 1989-04-16 Ulgor, S.Coop. Grupo alimentador-quemador para encimeras de cocinas de gas.
US5163830A (en) * 1991-08-29 1992-11-17 Greene Manufacturing Company Fuel-air mixer tube

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7363923B2 (en) 2005-01-05 2008-04-29 Illinois Tool Works Inc. cooking range assembly and monolithic drip pan
US7811082B2 (en) 2005-01-05 2010-10-12 Premark Feg, Llc Gas circuit and pilot light system for cooking range

Also Published As

Publication number Publication date
CN1160141A (zh) 1997-09-24
CA2198761A1 (en) 1997-09-01
EP0793058A3 (de) 1999-01-13
BR9700327A (pt) 1998-10-27
MX9701418A (es) 1998-03-31

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