EP0399178A1 - Appareil de cuisson des aliments avec un élément de chauffage radiant - Google Patents

Appareil de cuisson des aliments avec un élément de chauffage radiant Download PDF

Info

Publication number: EP0399178A1
Authority: EP; European Patent Office
Prior art keywords: reflector; heater; food; radiant; radiant heater
Prior art date: 1989-05-24
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

EP19900105904

Other languages

German (de)

English (en)

Other versions

EP0399178B1 (fr

Inventor

Martin Thaler

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.)

BSH Hausgeraete GmbH

Original Assignee

Bosch Siemens Hausgerate 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.)

1989-05-24

Filing date

1990-03-28

Publication date

1990-11-28

1990-03-28 Application filed by Bosch Siemens Hausgerate GmbH filed Critical Bosch Siemens Hausgerate GmbH

1990-11-28 Publication of EP0399178A1 publication Critical patent/EP0399178A1/fr

1994-10-12 Application granted granted Critical

1994-10-12 Publication of EP0399178B1 publication Critical patent/EP0399178B1/fr

2010-03-28 Anticipated expiration legal-status Critical

Status Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

- 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
- F24C15/00—Details
- F24C15/22—Reflectors for radiation heaters
- 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
- F24C7/00—Stoves or ranges heated by electric energy
- F24C7/06—Arrangement or mounting of electric heating elements

Definitions

the invention is based on a radiant heating device for cooking appliances according to the preamble of claim 1.
a parabolic reflector is assigned to the tubular or rod-shaped radiant heater, for example, which reflects the heat rays directed away from the food to be cooked as rays in the direction of the food to be treated.
the irradiated area is dimensioned relatively narrow, so that a plurality of radiant heaters and reflectors must be present in close proximity in order to obtain a larger irradiation area.
radiant heaters designed as halogen lamps are provided for heating a hotplate, with each halogen lamp being assigned two regions of the reflector which are essentially in the form of parabolic cylinder sections.
the reflector should have the best possible reflectivity and the lowest possible heat absorption capacity, with the latter device additionally having a cooling device in the form of a fan for the reflector, so that the temperature of the reflector can be kept relatively low.
the invention has for its object to improve the radiant heater so that the thermal energy emanating from the radiant heater can be used as completely as possible for heating the food.
the efficiency of the radiant heater can be further improved by providing the reflector with a thermally insulating coating on the surface facing away from the food. In this way, practically the entire thermal energy absorbed by the reflector is transported as secondary radiation in the direction of the food to be cooked.
the measure according to claim 3 optimizes the effectiveness of the reflected primary radiation emanating from the radiant heater and not emitted in the direction of the food by preventing this reflected primary radiation from being concentrated and by distributing this reflected primary radiation more evenly over a larger area.
this measure is of importance when using tubular casing radiators as radiant heaters, the undesired reflection of the primary radiation in the direction of the radiant heater or the radiant heater jacket being avoided by the angular radiation.
a grill heater generally designated 2
the grill heater 2 consists in the embodiment of two spaced-apart triangular tubular heaters 6, which are held on a frame-shaped grill holder 7, for example, which grill holder is in turn fastened to the upper muffle wall 1 by means of one or more rods 8.
the tubular heating elements consist of a closed metallic and triangular tube 61, in which a heating conductor 62 is located within an insulating filling. Due to the triangular shape of the tubular heating element, the radiation surface facing the food 4 is increased and the radiation surface facing the muffle wall 1 is kept as small as possible.
an axis plane 9 is indicated, which goes through the radiant heater axis and is perpendicular to the food support level 3.
the reflector consists of a thin metal sheet material, preferably stainless steel sheet, with a sheet thickness of approximately 0.3 mm and thus has a small thermal mass.
the reflector has good heat absorption properties and a high corrosion resistance compared to the thermal energy emanating from the radiant heater 6.
the absorption properties can be obtained, for example, by the relatively dark design of the surface of the reflector 12 facing the radiant heater 6. This surface can be provided with a dark, absorption-friendly coating, or can be used without surface treatment of the raw material, the result being obtained even during relatively short-term operation Corrosion-related "blackening" of the sheet surface gives the reflector good absorption properties.
the reflector 12 has a reflector section 13 which extends on both sides of the axial plane 9 and whose length corresponds to the wide dimension of the tubular heating element 6 in the extent parallel to the reflection plane 10. This reflector section 13 is adjoined at both ends by inclined reflector sections 14.
Fig. 3 this is illustrated in more detail, with a round jacket tube heater 6 'is provided in this embodiment.
the reflector sections 14 are at an angle a of approximately 20 ° angled relative to the reflector section 13.
the dimension b denotes the outer diameter of the tubular heating element 6 'and the length of the reflector section 13.
the triangular shape of the tubular heating element 6 increases the area of the tubular heating element radiating in the direction of the food 4 and keeps the area directed against the muffle wall 1 small.
the radiant heater according to FIGS. 2 and 3 is a round tubular casing heater 6 '.
the reflector section 131 of the reflector 121 directly adjacent to the axis plane 9 is subdivided into curved surfaces 132 on both sides of the axis plane 9, which curved surfaces extend away from the food to be cooked from the axis plane and are also curved thereafter. have reflector sections 133 extending in the direction of the food to be cooked.
the radiation arrows make it clear that the upward directed, from the tubular casing heater 6 'outgoing infrared rays are reflected at the reflector section 131 at an angle to the axis plane 9 that they go past the outer jacket of the tubular casing heater 6'.
the remaining infrared rays directed upwards or sideways are reflected at the reflector section 133 in a bundle-like manner and also at an angle to the axis plane 9 in the direction of the food to be cooked.
the reflector 122 is zigzag-shaped and, starting from the axis plane 9, has angularly rising, flat sections of the reflector section 134, the length of this reflector section 134 again corresponding to the width of the triangular tubular heating element 6.
the two flat sections of the reflector section 134 are in turn arranged starting from the axis plane 9 and away from the food to be cooked.
Downwardly inclined reflector sections 135 are arranged after the reflector section 132.
the ray path shown shows that the primary rays incident on the reflector sections 134 and 135 and emanating from the tubular heating element 6 are reflected at an angle to the axis plane 9 and passing the tubular heating element 6.
the reflector 6 is similar to the reflector shown in FIG. 4 and has an inner reflector section 136, the length of which corresponds to the diameter of the tubular casing heater 6 '.
the region of the reflector section 137 which is drawn in the direction of the tubular casing heater 6 'and lies on the axis plane 9 is rounded.

Landscapes

Engineering & Computer Science (AREA)
Chemical & Material Sciences (AREA)
Combustion & Propulsion (AREA)
Mechanical Engineering (AREA)
General Engineering & Computer Science (AREA)
Electric Stoves And Ranges (AREA)
Control Of Resistance Heating (AREA)
Cookers (AREA)
Baking, Grill, Roasting (AREA)
Electric Ovens (AREA)

EP90105904A 1989-05-24 1990-03-28 Appareil de cuisson des aliments avec un élément de chauffage radiant Expired - Lifetime EP0399178B1 (fr)

Applications Claiming Priority (2)

Application Number	Priority Date	Filing Date	Title
DE3917000A DE3917000C2 (de)	1989-05-24	1989-05-24	Strahlungsheizeinrichtung für Kochgeräte
DE3917000		1989-05-24

Publications (2)

Publication Number	Publication Date
EP0399178A1 true EP0399178A1 (fr)	1990-11-28
EP0399178B1 EP0399178B1 (fr)	1994-10-12

Family

ID=6381357

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
EP90105904A Expired - Lifetime EP0399178B1 (fr)	1989-05-24	1990-03-28	Appareil de cuisson des aliments avec un élément de chauffage radiant

Country Status (5)

Country	Link
EP (1)	EP0399178B1 (fr)
AT (1)	ATE112840T1 (fr)
DD (1)	DD298964A5 (fr)
DE (2)	DE3917000C2 (fr)
ES (1)	ES2063187T3 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
DE9310067U1 (de) *	1992-07-14	1993-09-30	Imex Corporation Ltd., Seoul	Ofen mit Heizstrahler im fernen Infrarot
GB2289607A (en) *	1994-05-16	1995-11-22	Univ Cranfield	High efficiency oven using reflector
GB2367887A (en) *	2000-10-09	2002-04-17	Mindy Tsao	Electric oven with heat radiation reflection device

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
DE4221626C2 (de) *	1992-07-01	1994-06-16	Kernforschungsz Karlsruhe	Infrarot-Strahlungsheizeinrichtung
FR3092389B1 (fr) *	2019-02-06	2021-03-12	Meledo Herve	Cuisson homogene d’aliments par un dispositif permettant l’isolation statique, la focalisation, la canalisation et la modulation des energies

Citations (3)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
EP0147340A1 (fr) *	1983-12-12	1985-07-03	A.C.I.R. Société dite	Générateur électrique de rayons infra-rouges
US4728777A (en) *	1985-09-18	1988-03-01	Thorn Emi Appliances Limited	Grilling arrangement
DE3723077A1 (de) *	1987-07-11	1989-01-19	Bauknecht Hausgeraete	Strahlheizkoerper fuer kochgeraete

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US3686477A (en) *	1971-08-06	1972-08-22	Gen Electric	Mounting system for solid plate surface heating units
US4629865A (en) *	1985-01-23	1986-12-16	Raytheon Company	Electric oven with improved broiler
JPH0663625B2 (ja) *	1986-09-24	1994-08-22	株式会社日本ケミカル・プラント・コンサルタント	遠赤外線放射装置

1989
- 1989-05-24 DE DE3917000A patent/DE3917000C2/de not_active Expired - Fee Related
1990
- 1990-03-28 AT AT90105904T patent/ATE112840T1/de not_active IP Right Cessation
- 1990-03-28 ES ES90105904T patent/ES2063187T3/es not_active Expired - Lifetime
- 1990-03-28 DE DE59007428T patent/DE59007428D1/de not_active Expired - Fee Related
- 1990-03-28 EP EP90105904A patent/EP0399178B1/fr not_active Expired - Lifetime
- 1990-05-22 DD DD90340908A patent/DD298964A5/de not_active IP Right Cessation

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
EP0147340A1 (fr) *	1983-12-12	1985-07-03	A.C.I.R. Société dite	Générateur électrique de rayons infra-rouges
US4728777A (en) *	1985-09-18	1988-03-01	Thorn Emi Appliances Limited	Grilling arrangement
DE3723077A1 (de) *	1987-07-11	1989-01-19	Bauknecht Hausgeraete	Strahlheizkoerper fuer kochgeraete

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
DE9310067U1 (de) *	1992-07-14	1993-09-30	Imex Corporation Ltd., Seoul	Ofen mit Heizstrahler im fernen Infrarot
GB2289607A (en) *	1994-05-16	1995-11-22	Univ Cranfield	High efficiency oven using reflector
GB2289607B (en) *	1994-05-16	1997-09-10	Univ Cranfield	High efficiency oven
GB2367887A (en) *	2000-10-09	2002-04-17	Mindy Tsao	Electric oven with heat radiation reflection device

Also Published As

Publication number	Publication date
DE3917000C2 (de)	2000-10-26
DE59007428D1 (de)	1994-11-17
ATE112840T1 (de)	1994-10-15
DE3917000A1 (de)	1990-11-29
ES2063187T3 (es)	1995-01-01
EP0399178B1 (fr)	1994-10-12
DD298964A5 (de)	1992-03-19

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1990-10-13	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
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