EP0126858B1 - Corps de chauffe électrique - Google Patents

Corps de chauffe électrique Download PDF

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Publication number
EP0126858B1
EP0126858B1 EP84102135A EP84102135A EP0126858B1 EP 0126858 B1 EP0126858 B1 EP 0126858B1 EP 84102135 A EP84102135 A EP 84102135A EP 84102135 A EP84102135 A EP 84102135A EP 0126858 B1 EP0126858 B1 EP 0126858B1
Authority
EP
European Patent Office
Prior art keywords
heater
wire coil
another
downstream
resistance
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.)
Expired
Application number
EP84102135A
Other languages
German (de)
English (en)
Other versions
EP0126858A1 (fr
Inventor
Arno Lassahn
Lothar Langer
Dieter F. Dr.-Ing. Schulze-Fröhlich
Hans Siwon
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.)
Steinel GmbH and Co KG
Original Assignee
Steinel GmbH and Co KG
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=8190425&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0126858(B1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Steinel GmbH and Co KG filed Critical Steinel GmbH and Co KG
Priority to AT84102135T priority Critical patent/ATE31136T1/de
Priority to FI841317A priority patent/FI75462C/fi
Priority to DK178884A priority patent/DK178884A/da
Priority to AU26899/84A priority patent/AU2689984A/en
Priority to ES531798A priority patent/ES8503918A1/es
Priority to NO841601A priority patent/NO841601L/no
Priority to BR8401850A priority patent/BR8401850A/pt
Publication of EP0126858A1 publication Critical patent/EP0126858A1/fr
Publication of EP0126858B1 publication Critical patent/EP0126858B1/fr
Application granted granted Critical
Expired legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B3/00—Ohmic-resistance heating
    • H05B3/10—Heating elements characterised by the composition or nature of the materials or by the arrangement of the conductor
    • H05B3/16—Heating elements characterised by the composition or nature of the materials or by the arrangement of the conductor the conductor being mounted on an insulating base
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B3/00—Ohmic-resistance heating
    • H05B3/40—Heating elements having the shape of rods or tubes
    • H05B3/42—Heating elements having the shape of rods or tubes non-flexible
    • H05B3/46—Heating elements having the shape of rods or tubes non-flexible heating conductor mounted on insulating base

Definitions

  • the invention relates to an electric radiator for heating a gaseous or liquid medium, with a holding device for receiving a heating wire helix, the holding device consisting of individual radiator elements which are axially superimposed and have a circular cross section and in which recesses are formed in mutually opposite areas. in which the heating wire coil is located, and the outer walls of the radiator elements, when placed one on top of the other, form a closed, cylindrical outer wall of the holding device.
  • a radiator is known from FR-A-1 348 098.
  • Similar radiators are known, for example, from US-A-1 514 857 and FR-A-931 619.
  • the heating wire coil with sections connected electrically in series lies above individual disk-shaped radiator elements which have opening slots on the outer cylindrical surfaces which keeps the filament contact with the medium to be heated. Since the heating wire filament in these radiators is relatively poorly washed by the medium, the heat output that can be emitted is relatively low even at the maximum temperature with which the heating wire filament can be loaded.
  • DE-B-1 176 293 has taken the measure that the downstream sections of the heating wire helix have a greater pitch than those which are further upstream.
  • DE-A-2 833 663 it is known from DE-A-2 833 663 to apply different amounts of power to the individual sections of the heating wire coil one after the other in the flow direction.
  • these measures known from the prior art for eliminating the latter problem are relatively complex to implement.
  • the present invention has for its object to provide a radiator of the type mentioned, which allows a high heating power with a relatively compact design by the heating wire coil is brought to a constant temperature over its entire length substantially.
  • the medium to be heated be it a gas, a gas mixture, air or a liquid
  • the medium to be heated is passed through the filament in planes on which the axis of the filament is substantially perpendicular.
  • the heating wire coil can emit a high heating power at a given temperature, which results in relatively small designs.
  • a relatively low flow resistance can be achieved in this radiator by arranging the heating wire helix on webs which are narrow in relation to the flow cross section. This enables the use of quietly operating fans with low output, which makes the radiators according to the invention particularly attractive for household and do-it-yourself devices.
  • the sections of the filament that are adjacent to the downstream end of the radiator and which usually heat up more are reduced by additional supply of medium to be heated Temperature (ambient temperature or slightly increased ambient temperature) thermally relieved.
  • Temperature ambient temperature or slightly increased ambient temperature
  • Claim 3 relates to a development that allows the object of claim 2 to be realized in an extremely simple manner, namely to vary the cross-sectional areas of the radial passages by placing radiator elements on top of one another in such a way that two adjacent passages are formed to achieve a larger cross-section a passage with a double flow cross-section.
  • radiator elements which have a radial passage lie only against one another in the region of the central core and on the cylindrical outer surface.
  • the entire cross-sectional area between the cylindrical outer wall and the central core forms a common radial opening which connects all the axial openings to one another.
  • the development according to claim 5 contains an additional measure to equalize the temperature profile over the entire length of the heating wire coil.
  • FIG. 1 shows a radiator which has seven radiator elements 1 stacked one on top of the other, which are held together by a tendon 2 which penetrates them centrally.
  • This radiator is mounted on a mounting unit 3 having an annular flange.
  • the radiator elements 1, of which individual embodiments are shown in Figures 4a, 4b, 5a, 5b and 6a, 6b, consist of ceramic or other heat-resistant material. They have a hollow cylindrical ring 4, to which are connected webs 5 which run radially inwards and which end at a central core 6. When the individual radiator elements are stacked on top of one another, they form a continuous, gapless outer surface.
  • the webs 5 are designed to be relatively narrow in the radial direction, so that they offer only little resistance to an air flow flowing through the heating element in the axial direction.
  • FIG. 7 shows how the filament lies in the radiator.
  • the individual sections 8 of the heating wire helix are connected in series to one another by connections 9 which are perpendicular to the planes which define the sections 8. Since the sections 8 do not form a full circle, the connections are angularly offset from one another. They each run in the radiator through mutually offset axial channels 10, which are defined by two mutually adjacent webs 5.
  • the planes 11a and 11b of the heating wire coil are brought out axially and can also be seen from FIGS. 1 and 2.
  • the third axially led out conductor 11c is connected at a suitable point of the heating wire coil in order to branch off a predetermined part of the total voltage from the heating wire coil, with which, for example, a low-voltage motor for a blower can be operated.
  • FIG. 2 shows the radiator from the air inlet side.
  • the air enters through the twelve axial channels 10 between the webs 5, flushes around the individual sections 8 of the heating wire coil and exits from the corresponding channels 10 on the downstream side.
  • the diameters of the individual turns of the heating wire coil are only insignificantly smaller than the radial diameter of a channel 10, as a result of which a large heating output can be achieved for a relatively small radiator.
  • the webs 9 of the individual radiator elements are aligned axially with one another in order to achieve the lowest possible air resistance through the channels 10. In order to facilitate this alignment with one another, the individual radiator elements 1 are provided with marking grooves 12 (see FIG. 6a).
  • Interlocking projections and recesses can also be formed in the individual radiator elements so that these radiator elements can only be placed on one another in certain positions.
  • the central opening 13 receiving the tensioning slide 2 is square, which, in conjunction with a tensioning element which is also square in cross section, also leads to rotation prevention.
  • the tendon is formed here by a screw with a nut attached.
  • all the radiator elements 1, with the exception of the downstream last radiator element 1g, are penetrated by three axial bores 14 a, b, c.
  • the bore 14a opens into channels 15a and 15b which run obliquely outwards and end in channels 10 which are adjacent to one another.
  • This axial bore 14a serves to return the heating wire helix connection 10a.
  • the grooves 15a and 15b serve to receive the connections 9 between the sections 8 of the heating wire coil.
  • FIG. 3 schematically shows the air flow through the radiator, the individual radiator elements 1 being provided with the same letters as in FIG. 1.
  • the radiator elements 1 to 1d are of identical design and have no radial passages 17. These radiator elements 1 are shown in Figures 4a and 4b.
  • the radiator elements 1e and 1f are in turn identical, but differ from the radiator elements 1a to 1d in that they have radial passages 17 on their two end faces between the axial bores 14a, b, c and the region of the webs 5 and axial channels 10 have between the webs 5.
  • radial passages 17 air flows out of the axial bores 14a, b, c into the region of the axial channels 10 and mixes there with air that has already been heated up strongly.
  • the flow through these radial passages 17 is ensured in that the axial bores 14a, b, c are closed by the last radiator element 1g.
  • This radiator element differs from the radiator element 1a by the lack of axial bores 14a, b, c.
  • FIG 3 shows another special feature in the arrangement of the individual radiator elements 1a to 1g.
  • the radiator elements 1e and 1f have radial passages 17 on their two end faces. After the radiator element 1e rests on a radiator element 1d that does not have a radial passage, a passage cross section of simple width results between these two radiator elements.
  • radial passages 17 come to lie on one another from both sides, there is a double cross-sectional area compared to the cross-sectional area between the radiator elements 1d and 1e. This ensures that the section 8 between the radiator elements 1e and 1f is cooled more than the section 8 located further upstream between the radiator elements 1d and 1e.
  • a radial passage of the desired height in the last radiator element 1g can also be provided in this sense, in order to achieve a corresponding temperature control of the filament.
  • a corresponding variation in the flow cross section of the radial passages 17 can also be achieved if, instead of the radiator elements 1e and 1f, each with radial passages on opposite sides, a radiator element is used which has such a radial passage only on one end face. In this case, one would place such a radiator element on the last closed radiator element 1d so that its radial passage is downstream. The next radiator element would also be placed in this way, while the next but one would have to have its radial passage on the upstream side in order to achieve the double flow cross section. With this constellation, however, this latter radiator element would then either have to be closed off by a disk in order to close off the axial bores 14a, b, c, which serve to guide the air, or a corresponding other measure would have to be taken for this.
  • FIGS. 5a and 5b show in detail using a radiator element 1e how the radial passages 17 are designed. They not only extend in a narrow channel between an axial bore 14a, b, c and an adjacent axial channel 10, but take up the entire area between an inner core piece 18 and the area of the webs 5, in which only the inner The core piece 18 and the outer circumferential wall 19 of the radiator element 1 are of maximum height and all other areas are of reduced thickness. Radiator elements 1 stacked one on top of the other are therefore only in contact with one another with their hollow cylindrical ring 4 and this inner core piece 18. The relatively large area of the radial passages 17 ensures that the partial section 8 of the heating wire helix over its entire circumference is evenly supplied with fresh air.
  • three axial bores 14a, b, c offset by 120 ° are shown. Instead of three such holes, more than three holes can of course also be provided. It is also advisable not to design the core as a solid material with axial bores, but with radial webs and air guiding channels in between, similar to the area in which the heating wire coil is located.

Landscapes

  • Resistance Heating (AREA)
  • Cleaning And Drying Hair (AREA)
  • Luminescent Compositions (AREA)
  • Investigating Or Analysing Biological Materials (AREA)
  • Medicines Containing Material From Animals Or Micro-Organisms (AREA)
  • Cookers (AREA)
  • Pipe Accessories (AREA)

Claims (5)

1. Radiateur électrique pour le chauffage d'un agent gazeux ou liquide, muni d'un dispositif de fixation destiné à recevoir un filament chauffant (8, 9), le dispositif de fixation étant constitué d'éléments chauffants (1) de section circulaire, disposés les uns sur les autres en direction radiale, dans lesquels sont formés des évidements dans des zones superposées (7), dans lesquelles est disposé le filament chauffant (8, 9), et dans lequel les parois extérieures (4) des éléments chauffants (1) confèrent au dispositif de fixation une paroi extérieure cylindrique, caractérisé en ce que, dans les éléments chauffants (1), sont prévues des entretoises (5) s'étendant radialement entre les parois extérieures et une zone centrale, qui comportent les évidements (7) destinés à recevoir le filament chauffant (8, 9), et entre lesquelles sont établis des canaux d'écoulement axiaux (10) pour l'agent à chauffer, en ce qu'il est formé dans la zone centrale du radiateur, au moins un canal d'écoulement axial supplémentaire (14a, 14b, 14c) qui est fermé à l'extrémité aval du radiateur, et en ce que sur au moins l'un des éléments chauffants (1e, lf) situés en aval, au moins un passage dirigé radialement (17) est formé entre le canal d'écoulement axial supplémentaire (14a, 14b, 14c) et les canaux axiaux (10) disposés entre les entretoises (5).
2. Radiateur selon la revendication 1, caractérisé par au moins deux passages radiaux (17) disposés l'un sur l'autre dans la direction d'écoulement, et parmi lesquels le passage disposé vers l'aval présente une section droite supérieure à celle du passage disposé vers l'amont.
3. Radiateur selon la revendication 1 ou 2, caractérisé en ce que le passage radial (17) est formé dans la zone de la face avant de l'élément chauffant (1).
4. Radiateur selon l'une des revendications 1 à 3, caractérisé en ce que, pour la réalisation du passage radial (17), l'élément chauffant (1) est essentiellement formé sur la totalité de la périphérie entre la paroi cylindrique (4) et une âme centrale (6) d'épaisseur réduite.
5, Radiateur selon l'une des revendications 1 à 4, caractérisé en ce que la distance entre spires du filament chauffant enroulé en spirale dans les zones orientées vers l'aval du radiateur est plus grande que dans les zones dirigées vers l'amont.
EP84102135A 1983-04-22 1984-02-29 Corps de chauffe électrique Expired EP0126858B1 (fr)

Priority Applications (7)

Application Number Priority Date Filing Date Title
AT84102135T ATE31136T1 (de) 1983-04-22 1984-02-29 Elektrischer heizkoerper.
FI841317A FI75462C (fi) 1983-04-22 1984-04-02 Eluppvaermningsanordning.
DK178884A DK178884A (da) 1983-04-22 1984-04-05 Elektrisk varmelegeme
AU26899/84A AU2689984A (en) 1983-04-22 1984-04-17 Electric fluid heater
ES531798A ES8503918A1 (es) 1983-04-22 1984-04-18 Radiador electrico para el calentamiento de un fluido
NO841601A NO841601L (no) 1983-04-22 1984-04-18 Elektrisk varmelegeme.
BR8401850A BR8401850A (pt) 1983-04-22 1984-04-18 Corpo de aquecimento eletrico

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP83103976A EP0123698B1 (fr) 1983-04-22 1983-04-22 Elément chauffant électrique pour le chauffage d'un fluide
EP83103976 1983-04-22

Publications (2)

Publication Number Publication Date
EP0126858A1 EP0126858A1 (fr) 1984-12-05
EP0126858B1 true EP0126858B1 (fr) 1987-11-25

Family

ID=8190425

Family Applications (2)

Application Number Title Priority Date Filing Date
EP83103976A Expired EP0123698B1 (fr) 1983-04-22 1983-04-22 Elément chauffant électrique pour le chauffage d'un fluide
EP84102135A Expired EP0126858B1 (fr) 1983-04-22 1984-02-29 Corps de chauffe électrique

Family Applications Before (1)

Application Number Title Priority Date Filing Date
EP83103976A Expired EP0123698B1 (fr) 1983-04-22 1983-04-22 Elément chauffant électrique pour le chauffage d'un fluide

Country Status (10)

Country Link
EP (2) EP0123698B1 (fr)
JP (2) JPS59203392A (fr)
AT (1) ATE17297T1 (fr)
AU (1) AU567504B2 (fr)
BR (1) BR8306525A (fr)
DE (2) DE3361675D1 (fr)
DK (1) DK492483A (fr)
FI (1) FI75463C (fr)
NO (1) NO153789C (fr)
ZA (2) ZA836088B (fr)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61189260U (fr) * 1985-05-17 1986-11-26
JPS62202486A (ja) * 1986-02-28 1987-09-07 白光株式会社 温風発生器のヒ−タ−アセンブリ用碍子
IT1189089B (it) * 1986-04-18 1988-01-28 Gaetano Piazzola Scambiatore di calore ad elementi modulari,particolarmente studiato per cilindri di estrusione,presse ad iniezione,trafilatrici e simili di macchine per la lavorazione di materie plastiche
IT1191776B (it) * 1986-05-02 1988-03-23 Gaetano Piazzola Struttura di elementi modulari compinibili per la realizzazione di gruppi termoregolatori e per cilindri di plastificazione e parti di macchine per la lavorazione di materie plastiche e simili
FR2598847B1 (fr) * 1986-05-13 1990-08-17 Hennequin Cie Ets Dispositif electrique de resistances de charge a ventilation forcee
JPH0723917Y2 (ja) * 1988-10-18 1995-05-31 貞義 竹綱 電熱線用螺旋碍子
JPH0581983U (ja) * 1991-12-12 1993-11-05 白光株式会社 温風発生器のヒーターアセンブリ用碍子
DE19839044A1 (de) * 1998-08-28 2000-03-02 Steinel Gmbh & Co Kg Elektrische Heizvorrichtung und Verfahren zum Betreiben einer Heizvorrichtung
JP4592910B2 (ja) * 2000-10-06 2010-12-08 太洋電機産業株式会社 熱風式半田処理装置のヒーター
CN104093496B (zh) * 2011-12-09 2017-05-24 伊利诺斯工具制品有限公司 用于热熔型粘合剂或其他热塑性材料分配涂敷器的泡沫热交换器
DE102021215100A1 (de) 2021-12-30 2023-07-06 BSH Hausgeräte GmbH Haushalts-Dampfgargerät

Family Cites Families (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1514857A (en) * 1923-07-27 1924-11-11 Moore Company Ltd D Fire bar for electric water heaters
FR37959E (fr) * 1929-11-21 1931-03-03 Vosswerke Ag élément de support pour fils de chauffage électrique
US2097705A (en) * 1936-06-02 1937-11-02 Stuck Everett Electric water heater
US2278180A (en) * 1940-01-23 1942-03-31 Lewis Edward Electric hair drier
FR931619A (fr) * 1943-10-15 1948-02-27 Alsthom Cgee Nouvelle disposition pour résistances électriques, notamment pour corps de chauffeà immersion
GB951947A (en) * 1959-09-14 1964-03-11 Philips Nv Improvements in or relating to electric heating apparatus
DE1176293B (de) * 1960-07-11 1964-08-20 Licentia Gmbh Elektrisches Drahtheizelement, insbesondere fuer Haartrockner
FR1348098A (fr) * 1963-02-08 1964-01-04 Perfectionnement aux chauffe-eau
US3267255A (en) * 1964-01-30 1966-08-16 Gen Electric Forced air electric baseboard heater
GB1233528A (fr) * 1967-06-03 1971-05-26
GB1267803A (en) * 1968-04-03 1972-03-22 Laporte Titanium Ltd Improvements in and relating to the heating of gases
DE2349888A1 (de) * 1973-10-04 1975-04-17 Wigo Widmann Soehne Gottlob Heizelement fuer haartrockner
DE2432957A1 (de) * 1974-07-09 1976-01-29 Jones Jun Von hand zu haltendes mundstueck zum erhitzen eines unter druck zugefuehrten stroemenden mediums
DE2849266C2 (de) * 1978-11-14 1982-02-04 Fritz Eichenauer GmbH & Co KG, 6744 Kandel Elektrischer Heizkörper für gasförmige Medien

Also Published As

Publication number Publication date
NO153789C (no) 1986-05-28
FI75463C (fi) 1988-06-09
FI832814A (fi) 1984-10-23
FI75463B (fi) 1988-02-29
ZA842952B (en) 1984-11-28
JPH0358157B2 (fr) 1991-09-04
AU567504B2 (en) 1987-11-26
FI832814A0 (fi) 1983-08-04
NO833004L (no) 1984-10-23
DK492483A (da) 1984-10-23
DK492483D0 (da) 1983-10-27
JPH0226357B2 (fr) 1990-06-08
NO153789B (no) 1986-02-10
EP0123698B1 (fr) 1986-01-02
EP0126858A1 (fr) 1984-12-05
DE3361675D1 (en) 1986-02-13
DE3467847D1 (en) 1988-01-07
EP0123698A1 (fr) 1984-11-07
ZA836088B (en) 1984-08-29
ATE17297T1 (de) 1986-01-15
JPS6035489A (ja) 1985-02-23
JPS59203392A (ja) 1984-11-17
AU1810383A (en) 1984-10-25
BR8306525A (pt) 1985-03-12

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