EP0014978A1 - Dispositif pour protéger partiellement d'une flamme ouverte un récipient devant être chauffé - Google Patents

Dispositif pour protéger partiellement d'une flamme ouverte un récipient devant être chauffé Download PDF

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Publication number
EP0014978A1
EP0014978A1 EP80100795A EP80100795A EP0014978A1 EP 0014978 A1 EP0014978 A1 EP 0014978A1 EP 80100795 A EP80100795 A EP 80100795A EP 80100795 A EP80100795 A EP 80100795A EP 0014978 A1 EP0014978 A1 EP 0014978A1
Authority
EP
European Patent Office
Prior art keywords
glass ceramic
ceramic plate
passages
heated
container
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.)
Ceased
Application number
EP80100795A
Other languages
German (de)
English (en)
Inventor
Helmut Antlinger
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.)
Schott AG
Original Assignee
Schott Glaswerke AG
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 Schott Glaswerke AG filed Critical Schott Glaswerke AG
Publication of EP0014978A1 publication Critical patent/EP0014978A1/fr
Ceased legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01L—CHEMICAL OR PHYSICAL LABORATORY APPARATUS FOR GENERAL USE
    • B01L99/00—Subject matter not provided for in other groups of this subclass
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01L—CHEMICAL OR PHYSICAL LABORATORY APPARATUS FOR GENERAL USE
    • B01L7/00—Heating or cooling apparatus; Heat insulating devices
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24C—DOMESTIC STOVES OR RANGES ; DETAILS OF DOMESTIC STOVES OR RANGES, OF GENERAL APPLICATION
    • F24C3/00—Stoves or ranges for gaseous fuels
    • F24C3/08—Arrangement or mounting of burners
    • F24C3/085—Arrangement or mounting of burners on ranges

Definitions

  • the invention relates to a device for partially shielding a container to be heated, such as a glass bulb, from an open flame, e.g. a Bunsen burner, and to distribute the hot gas emitted by the flame.
  • a container to be heated such as a glass bulb
  • an open flame e.g. a Bunsen burner
  • asbestos wire networks have been used for such purposes, particularly in laboratories or the like, which consist of a relatively narrow-meshed wire mesh which is interspersed with an approximately circular layer of asbestos.
  • These asbestos wire nets are attached to a stand by means of a screw clamp or the like or placed on a tripod in such a way that they are in a horizontal position between the container to be heated, e.g. a glass bulb, and the flame e.g. a Bunsen burner.
  • the invention is therefore based on the object to provide a remedy here, namely by a device which is durable and absolutely reliable and any G e-propelled a health damage to the working staff excludes.
  • this object is achieved by a glass ceramic plate of relatively small thickness, e.g. solved in the range of about 2 to 7 mm.
  • Glass ceramic plates are highly thermally stable and have a coefficient of thermal expansion that is extremely small or zero. Due to the extremely high thermal resistance and fire resistance of the glass ceramic plates, correspondingly long service lives are achieved. Furthermore, the composition of a glass ceramic plate ensures that this does not represent a source of danger to the health of the workforce.
  • a ring of passages for the hot gas can be arranged around the central region of the glass ceramic plate with a full cross section to be arranged above the flame tip.
  • the central area with the full cross-section of the glass ceramic plate provides a certain shielding of the bulb to be heated or the like from the open flame, while the hot gases emanating therefrom pass through the ring of passages to the bulb to be heated or the like can.
  • the passages can be formed, for example, by circular bores and / or arcuate slots.
  • the passages in the form of bores or arcuate Slits can also be provided along several concentrically arranged circles.
  • the passages can also consist of slots arranged in the form of a beam or of groups of slots of the same and / or different lengths arranged parallel to the outer edges of the glass ceramic plate.
  • the edge of the glass ceramic plate is expediently held by a holder, e.g. supported from an angle profile frame, which in turn can have a mounting handle for the usual fixation on a stand.
  • angle profile frame can be open or U-shaped on one side and can be provided with clamping springs for fixing the glass ceramic plate.
  • the glass ceramic plate or its holder from the angle profile frame can also be loosely attached to e.g. put a tripod on or screw it on.
  • the glass ceramic plate can be mounted on the support ring of a tripod and in this position by several, e.g. four projections on the support ring must be secured laterally, each offset by an angle of 90 °.
  • FIGS. 1-6 serve the purpose of partially shielding a container to be heated from an open flame, for example that of a Bunsen burner , or of distributing the hot gases emanating from the flame in such a way that the bottom of the glass bulb heats as evenly as possible without coming into direct contact with the open flame.
  • the device of FIGS. 1 and 2 or 3 and 4 is arranged in a horizontal position between the Bunsen burner and the container.
  • the device according to FIGS. 1 and 2 has a glass ceramic plate 10 with a thickness of approximately 2-7 mm, preferably approximately 4 mm, which contains an area 11 with a full cross section in the right half of the illustration, while in FIG an area with passages 12 is shown on the left half, in the form of bores along two concentrically arranged circles.
  • the glass ceramic plate 10 is arranged so that it can be pulled out easily in a holder 12, which here consists of an angular profile frame that is open on one side.
  • a fastening means 15 is attached to this angular profile frame, with the aid of which the holder 13 with the inserted glass ceramic plate 10 can be clamped on a stand (not shown) at the desired height in the usual manner.
  • two clamping springs 16 are fastened to the angle profile frame in the positions shown in FIG. 1, which press the glass ceramic plate 10 against the legs of the angle profile frame lying in one plane.
  • F ig. 3 each shows a half 10a or 10b of two further embodiments of the glass ceramic plate.
  • the passages 12a for the hot gas consist of slots arranged radially around the circular central region 11.
  • the slots running on the intersecting axes of symmetry of the glass ceramic plate 10a are mutually the same length, but shorter than the remaining slots, which in turn can have the same length.
  • the passages for the hot gas are formed by pairs of slots 12b arranged around the central region 11, which in the arrangement shown in FIG. 3 run parallel to the outer edges of the glass ceramic plate 10b, in this way that a substantially circular central region 11 with a full cross section is obtained in this case too.
  • the glass ceramic plate 10a or 10b is arranged in a holder 130 which consists of a closed angle profile frame 140, on the legs of which the glass ceramic plate 10a or 10b is mounted in one plane.
  • a fastening means 15 is attached to the angle profile frame 140.
  • the tripod 18 shown in Figs. 5 and 6 is designed so that e.g. a Bunsen burner (not shown) can be set up.
  • the tripod 18 is provided with a support ring 17 on which, in the present embodiment, a full glass ceramic plate 10c with a thickness of e.g. 4 mm is placed loosely.
  • a support ring 17 on which, in the present embodiment, a full glass ceramic plate 10c with a thickness of e.g. 4 mm is placed loosely.
  • four projections 19 are arranged on the top of the support ring 17, each offset by an angle of 90 °.
  • These projections 19 can consist of the heads of screws or rivets, but they can also be welded or riveted or screwed-in bolts or the like.
  • the height of these projections 19 is in any case dimensioned such that the desired positional securing of the glass ceramic plate 10c on the support ring 17 is achieved.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Clinical Laboratory Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Engineering & Computer Science (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Re-Forming, After-Treatment, Cutting And Transporting Of Glass Products (AREA)
  • Baking, Grill, Roasting (AREA)
EP80100795A 1979-02-21 1980-02-16 Dispositif pour protéger partiellement d'une flamme ouverte un récipient devant être chauffé Ceased EP0014978A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19797904805U DE7904805U1 (de) 1979-02-21 1979-02-21 Vorrichtung zur teilweisen abschirmung eines zu erwaermenden behaeltnisses, etwa eines glaskolbens gegenueber einer offenen flamme
DE7904805U 1979-02-21

Publications (1)

Publication Number Publication Date
EP0014978A1 true EP0014978A1 (fr) 1980-09-03

Family

ID=6701263

Family Applications (1)

Application Number Title Priority Date Filing Date
EP80100795A Ceased EP0014978A1 (fr) 1979-02-21 1980-02-16 Dispositif pour protéger partiellement d'une flamme ouverte un récipient devant être chauffé

Country Status (2)

Country Link
EP (1) EP0014978A1 (fr)
DE (1) DE7904805U1 (fr)

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR419282A (fr) * 1910-08-04 1910-12-30 Henri Monserviez Réchaud de table à alcool
US1495991A (en) * 1922-12-26 1924-06-03 Thomas H Drynan Boiler stand
FR1136330A (fr) * 1954-08-24 1957-05-13 Selas Corp Of America Perfectionnements apportés aux procédés pour cuire des aliments et aux brûleurs à gaz à rayonnement convenant à la mise en oeuvre de ces procédés
GB1038844A (en) * 1964-07-24 1966-08-10 Helix Universal Company Ltd Improvements in laboratory stands
US3488137A (en) * 1968-10-17 1970-01-06 Hikaru Naganuma Infrared gas burner with flashback prevention arrangement
US3830216A (en) * 1971-03-15 1974-08-20 Owens Illinois Inc Countertop heating apparatus
FR2248808A1 (en) * 1973-10-25 1975-05-23 Masson Sarl Le Heat diffuser for heating containers on cookers - edge of metal plate is rolled over lower asbestos plate
US3941117A (en) * 1974-10-21 1976-03-02 Owens-Illinois, Inc. Cooktop for a gas-fired range
DE2440701A1 (de) * 1974-08-24 1976-03-11 Schwank Gmbh Gasherd mit einem oder mehreren kochstellen-brennern

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR419282A (fr) * 1910-08-04 1910-12-30 Henri Monserviez Réchaud de table à alcool
US1495991A (en) * 1922-12-26 1924-06-03 Thomas H Drynan Boiler stand
FR1136330A (fr) * 1954-08-24 1957-05-13 Selas Corp Of America Perfectionnements apportés aux procédés pour cuire des aliments et aux brûleurs à gaz à rayonnement convenant à la mise en oeuvre de ces procédés
GB1038844A (en) * 1964-07-24 1966-08-10 Helix Universal Company Ltd Improvements in laboratory stands
US3488137A (en) * 1968-10-17 1970-01-06 Hikaru Naganuma Infrared gas burner with flashback prevention arrangement
US3830216A (en) * 1971-03-15 1974-08-20 Owens Illinois Inc Countertop heating apparatus
FR2248808A1 (en) * 1973-10-25 1975-05-23 Masson Sarl Le Heat diffuser for heating containers on cookers - edge of metal plate is rolled over lower asbestos plate
DE2440701A1 (de) * 1974-08-24 1976-03-11 Schwank Gmbh Gasherd mit einem oder mehreren kochstellen-brennern
US3941117A (en) * 1974-10-21 1976-03-02 Owens-Illinois, Inc. Cooktop for a gas-fired range

Also Published As

Publication number Publication date
DE7904805U1 (de) 1979-06-21

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Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Designated state(s): CH FR GB SE

17P Request for examination filed

Effective date: 19801208

RAP1 Party data changed (applicant data changed or rights of an application transferred)

Owner name: SCHOTT GLASWERKE

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION HAS BEEN REFUSED

18R Application refused

Effective date: 19830324

RIN1 Information on inventor provided before grant (corrected)

Inventor name: ANTLINGER, HELMUT