NO750931L - - Google Patents
Info
- Publication number
- NO750931L NO750931L NO750931A NO750931A NO750931L NO 750931 L NO750931 L NO 750931L NO 750931 A NO750931 A NO 750931A NO 750931 A NO750931 A NO 750931A NO 750931 L NO750931 L NO 750931L
- Authority
- NO
- Norway
- Prior art keywords
- element according
- support part
- current circuit
- circuit
- microns
- Prior art date
Links
- 238000010438 heat treatment Methods 0.000 claims abstract description 17
- 230000005855 radiation Effects 0.000 claims abstract description 8
- 229910052751 metal Inorganic materials 0.000 claims description 8
- 239000002184 metal Substances 0.000 claims description 8
- 239000011347 resin Substances 0.000 claims description 5
- 229920005989 resin Polymers 0.000 claims description 5
- 239000000463 material Substances 0.000 claims description 4
- 239000004020 conductor Substances 0.000 claims description 3
- 239000003365 glass fiber Substances 0.000 claims description 3
- 229910001092 metal group alloy Inorganic materials 0.000 claims description 3
- 239000010409 thin film Substances 0.000 claims description 2
- 229910000831 Steel Inorganic materials 0.000 description 3
- 238000000576 coating method Methods 0.000 description 3
- 238000005488 sandblasting Methods 0.000 description 3
- 239000010959 steel Substances 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 2
- 238000010411 cooking Methods 0.000 description 2
- 239000010408 film Substances 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000007639 printing Methods 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 239000004411 aluminium Substances 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 210000003298 dental enamel Anatomy 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005530 etching Methods 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000000873 masking effect Effects 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000007650 screen-printing Methods 0.000 description 1
- 229910052709 silver Inorganic materials 0.000 description 1
- 239000004332 silver Substances 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 229920002994 synthetic fiber Polymers 0.000 description 1
- 239000004753 textile Substances 0.000 description 1
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
- F24C7/00—Stoves or ranges heated by electric energy
- F24C7/04—Stoves or ranges heated by electric energy with heat radiated directly from the heating element
- F24C7/043—Stoves
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V33/00—Structural combinations of lighting devices with other articles, not otherwise provided for
- F21V33/0088—Ventilating systems
- F21V33/0092—Ventilating systems with heating or cooling devices
-
- 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
- H05B3/20—Heating elements having extended surface area substantially in a two-dimensional plane, e.g. plate-heater
- H05B3/22—Heating elements having extended surface area substantially in a two-dimensional plane, e.g. plate-heater non-flexible
- H05B3/26—Heating elements having extended surface area substantially in a two-dimensional plane, e.g. plate-heater non-flexible heating conductor mounted on insulating base
- H05B3/267—Heating elements having extended surface area substantially in a two-dimensional plane, e.g. plate-heater non-flexible heating conductor mounted on insulating base the insulating base being an organic material, e.g. plastic
-
- 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
- H05B3/20—Heating elements having extended surface area substantially in a two-dimensional plane, e.g. plate-heater
- H05B3/34—Heating elements having extended surface area substantially in a two-dimensional plane, e.g. plate-heater flexible, e.g. heating nets or webs
- H05B3/36—Heating elements having extended surface area substantially in a two-dimensional plane, e.g. plate-heater flexible, e.g. heating nets or webs heating conductor embedded in insulating material
-
- 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
- H05B2203/00—Aspects relating to Ohmic resistive heating covered by group H05B3/00
- H05B2203/002—Heaters using a particular layout for the resistive material or resistive elements
- H05B2203/003—Heaters using a particular layout for the resistive material or resistive elements using serpentine layout
-
- 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
- H05B2203/00—Aspects relating to Ohmic resistive heating covered by group H05B3/00
- H05B2203/013—Heaters using resistive films or coatings
-
- 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
- H05B2203/00—Aspects relating to Ohmic resistive heating covered by group H05B3/00
- H05B2203/017—Manufacturing methods or apparatus for heaters
-
- 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
- H05B2203/00—Aspects relating to Ohmic resistive heating covered by group H05B3/00
- H05B2203/026—Heaters specially adapted for floor heating
-
- 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
- H05B2203/00—Aspects relating to Ohmic resistive heating covered by group H05B3/00
- H05B2203/032—Heaters specially adapted for heating by radiation heating
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- Resistance Heating (AREA)
- Surface Heating Bodies (AREA)
- Constitution Of High-Frequency Heating (AREA)
- Cookers (AREA)
Abstract
"VARMEELEMENT MED UTSTRÅLING"."HEATING ELEMENT WITH RADIATION".
Description
Denne oppfinnelse vedrører et varmeelement med utstråling som særlig kan brukes som en varmespreder og et varme-eller kokeredskap. This invention relates to a heating element with radiation which can be used in particular as a heat spreader and a heating or cooking utensil.
Spredere ed varmemotstander er kjent som generelt omfatter en stålplate isolert ved hjelp av emalje eller en glass-plate hvortil er festet aluminium varmeelementer. En konstruksjon av denne type som generelt er komplisert og besværlig, tilveie-bringer vanligvis ikke den nødvendige grad av sikkerhet som følge av isolasjonsmangler. Dessuten er i forbindelse med glasserte stålplater kraften begrenset som følge av kapasitive tap. I til- Spreaders and heating resistors are known which generally comprise a steel plate insulated with enamel or a glass plate to which aluminum heating elements are attached. A construction of this type, which is generally complicated and cumbersome, usually does not provide the required degree of safety as a result of insulation deficiencies. Moreover, in connection with glazed steel plates, the power is limited as a result of capacitive losses. In to-
legg er konveksjonsfenomenet meget ufordelaktig, fordi det opp-varmer metallkomponentene og sverter vegger. In addition, the convection phenomenon is very disadvantageous, because it heats up the metal components and blackens the walls.
Bruken av glødetrådmotstander innleiret i bæredeler av syntetisk materiale har også vært foreslått. Bruk av motstander fører også til temperaturstigninger som begrenser bruksmuligheten, mens systemet har en høy termisk treghet. The use of filament resistors embedded in carrier parts of synthetic material has also been proposed. The use of resistors also leads to temperature rises which limit the possibility of use, while the system has a high thermal inertia.
Det har også vært foreslått å belegge en isolerende bæredel vesentlig omfattende glassfibre med'en elektrisk ledende blanding basert på karbon og et metall såsom sølv eller nikkel. Belegningen skjer i suksessive lag på arealer som da forfcindes elektrisk. Denne fremstillingsprosess er meget besværlig og dessuten har de således erholdte varmeplater en lav teknisk effekt pr. flateenhet av overflaten og spredevarme identisk via deres to overflater. Dessuten er beleggene sprø og skiller seg lett fra deres bæredel. It has also been proposed to coat an insulating carrier substantially comprising glass fibers with an electrically conductive mixture based on carbon and a metal such as silver or nickel. The coating takes place in successive layers on areas which are then electrically heated. This manufacturing process is very difficult and, moreover, the heating plates obtained in this way have a low technical effect per unit area of the surface and dissipate heat identically via their two surfaces. Moreover, the coatings are brittle and easily separate from their supporting part.
Foreliggende oppfinnelsesformål er å bortskaffe disse ulemper ved kjente varmeelementer ved hjelp av et nytt varmeelement som også har den fordel at det er bøyelig og av relativt liten dimen-sjon som muliggjør hittil ukjente anvendelser. The object of the present invention is to dispose of these disadvantages of known heating elements by means of a new heating element which also has the advantage that it is flexible and of relatively small dimensions which enables hitherto unknown applications.
spesielt den nødvendige b0yeli.gh.et.especially the necessary b0yeli.gh.et.
En strømkrets 2 fremstilt av et elektrisk bedende materiale såsom aluminium , kopper eller stål dannes på bæredelen 1-, fortrinnsvis ved en fotokjemisk trykning og valgfritt etter sandblåsing av bæredelen. Strømkretsen 2 er meget tynn, bare noen få mikroner og fortrinnsvis mindre enn 3 0 mikroner. Utstråling parallelt bæredelens plan blir således praktisk talt lik null. Dessuten, trass i bæredelens bøyelighet, er det ingen fare for A circuit 2 made of an electrically conductive material such as aluminium, copper or steel is formed on the support part 1-, preferably by photochemical printing and optionally after sandblasting the support part. The circuit 2 is very thin, only a few microns and preferably less than 30 microns. Radiation parallel to the plane of the carrier thus becomes practically equal to zero. Moreover, despite the flexibility of the carrier part, there is no danger of
at strømkretsen 2 blir skilt fra bæredelen 1 eller brekkes. that the current circuit 2 is separated from the carrier part 1 or is broken.
Overflaten av bæredelen 1 som bærer strømkretsen 2,The surface of the support part 1 which carries the circuit 2,
er dekket med en tynn harpinksfilm 3, hvilken harpiks er identisk med den som brukes til formning av bæredelen 1. Strømkretsen 2 er således elektrisk isolert, og dens oksydasjon forhindret, således at dens egenskaper ikke er forringet. Filmen 3 kan på-føres f.eks. med en sprøytepistol eller en maskin utstyrt med ruller. is covered with a thin resin film 3, which resin is identical to that used for forming the carrier part 1. The current circuit 2 is thus electrically isolated, and its oxidation prevented, so that its properties are not deteriorated. The film 3 can be applied, e.g. with a spray gun or a machine equipped with rollers.
Varmen som utstråles ved strømkretsen 2 er vesentlig utstrålt gjennom bæredelen 1. For å oppnå fullgod effektivitet er det derfor viktig for strømkretsen 2 at den dekker maksimalt areal av bæredelen 1. Strømkretsen 2 er derfor med størst fordel formet ved avsetning og elektrokjemisk virkning som gjør det mulig å dekke opptil 9 5% og enndog mere av bæredelens overflateareal. The heat radiated by the current circuit 2 is essentially radiated through the carrier part 1. In order to achieve full efficiency, it is therefore important for the current circuit 2 that it covers the maximum area of the carrier part 1. The current circuit 2 is therefore with the greatest advantage formed by deposition and electrochemical action which makes it possible to cover up to 95% and even more of the carrier's surface area.
Elementet ifølge oppfinnelsen kan brukes som grunn-leggende moduler av et system hvor, for økning av kraften, det bare er nødvendig å sammenkople et antall moduler. The element according to the invention can be used as basic modules of a system where, to increase the power, it is only necessary to connect a number of modules.
De kan lett innkorporeres i apparater som brukes for andre øyemed på grunn av deres små dimensjoner og store bøyelig-het. Således viser fig. 3 en kontorlampe 4 hvis skjerm 5 omfatter et varmeelement ifølge oppfinnelsen og en bevegelig maskering 6 som bare dekker en del, f.eks. 1/6 av skjermens omkrets og kan føres langs skinner 7 for å stoppe varmeutstråling i en ønsket retning. Varmeintensiteten reguleres ved en flerstillingsknapp 8 som virker på en termostat. They can be easily incorporated into devices used for other purposes due to their small dimensions and great flexibility. Thus, fig. 3 an office lamp 4 whose screen 5 comprises a heating element according to the invention and a movable masking 6 which only covers a part, e.g. 1/6 of the screen's circumference and can be guided along rails 7 to stop heat radiation in a desired direction. The heat intensity is regulated by a multi-position button 8 which acts on a thermostat.
Elementet ifølge oppfinnelsen kan mere konvensjo-nelt brukes som individuelle radiatorer ved å utstyre en stiv bæredel 1 med en enkel metallrarnme,fordi bæredelerie bare eks-panderes ubetydelig, og det er ingen fare for kortslutning. The element according to the invention can be more conventionally used as individual radiators by equipping a rigid support part 1 with a simple metal frame, because the support part only expands insignificantly, and there is no danger of short-circuiting.
De kan også brukes som veggradiatorer, varmesokler, etc.They can also be used as wall radiators, heating bases, etc.
For dette øyemed er oppfinnelsens gjenstand et varmeelement med utstråling ved bølgelengder mellom 2 og 8 mikroner, fortrinnsvis av størrelsen 5,9 mikroner,som omfatter en bæredel For this purpose, the object of the invention is a heating element with radiation at wavelengths between 2 and 8 microns, preferably of size 5.9 microns, which comprises a carrier part
av et materiale som er-en dårlig leder, har en lav termisk treghet, er gjennomtrengelig for infrarød stråling og har en tykkelse mindre enn 1 mm, og fortrinnsvis mindre enn o,5 mm, og en overflate av den nevnte bæredel belegges med en strømkrets omfattende et tynt lag of a material which is a poor conductor, has a low thermal inertia, is permeable to infrared radiation and has a thickness of less than 1 mm, and preferably less than 0.5 mm, and a surface of said carrier is coated with a circuit comprising a thin layer
av et metall eller en elektrisk ledende metallegering, hvilken strømkrets dekker minst 90% av det aktive overflateareal av bæredelen. of a metal or an electrically conductive metal alloy, which circuit covers at least 90% of the active surface area of the carrier part.
Bruken av en termisk isolert bæredel, hvorpå en elektrisk ledende strømkrets er anbragt, fører overraskende til et varmeelement som eliminerer ulempene ved de hittil kjente elementer. The use of a thermally insulated support part, on which an electrically conducting current circuit is placed, surprisingly leads to a heating element which eliminates the disadvantages of the previously known elements.
Elementet ifølge oppfinnelsen kan brukes praktisk talt uten tilbehør, dvs. spesielt uten isolasjonsdeler på kantene og de frontale beskyttelsesdeler, hvilket forenkler dets bruk og redu-serer både omkostninger og størrelsen. The element according to the invention can be used practically without accessories, i.e. especially without insulation parts on the edges and the frontal protection parts, which simplifies its use and reduces both costs and size.
Den ledende metallegering eller metallstrømkretsThe conductive metal alloy or metal circuit
kan erholdes f.eks. ved fotokjemisk trykning, silketrykkmetoden og etsning eller elektrolyttisk behandling på en overflate av bæredelen, valgfritt etter sandblåsing av denne overflate. Denne prosess har den fordel at den gjør det mulig å forme et ytterst tett nettverk som kan dekke opp til og endog over 95% av elemen-tets overflate. I tillegg til å øke adhesjon av metallbelegget øker sandblåsing også utstråling. can be obtained e.g. by photochemical printing, the screen printing method and etching or electrolytic treatment on a surface of the carrier part, optionally after sandblasting this surface. This process has the advantage that it makes it possible to form an extremely dense network that can cover up to and even over 95% of the element's surface. In addition to increasing adhesion of the metal coating, sandblasting also increases radiance.
Ifølge en foretrukket utførelse er strømkretsen dekket av en tynn film av samme harpiks som er brukt til forming av-, bæredelen. According to a preferred embodiment, the current circuit is covered by a thin film of the same resin that is used to form the carrier part.
Oppfinnelsen skal beskrives nærmere under henvisning til tegningene, på hvilke fig. 1 er et planriss av en del av overflaten av et element ifølge oppfinnelsen hvilken overflate bærer en metallisk ledende strømkrets, fig. 2 er et snitt etter linjen II-II på fig. 1, og fig. 3 er et perspektivriss av en lampe utstyrt med varmeelementet ifølge oppfinnelsen. The invention shall be described in more detail with reference to the drawings, in which fig. 1 is a plan view of part of the surface of an element according to the invention, which surface carries a metallic conducting current circuit, fig. 2 is a section along the line II-II in fig. 1, and fig. 3 is a perspective view of a lamp equipped with the heating element according to the invention.
Heteelementet omfatter en bæredel 1 formet av en plate eller et lag. I den beskrevne utførelse omfatter bæredelen 1 glassfibre innbyrdes forbundet < med en termostabil harpiks og dens tykkelse er en funksjon av de ønskede mekaniske egen skaper, mere The heating element comprises a support part 1 formed from a plate or a layer. In the described embodiment, the support part 1 comprises glass fibers interconnected < with a thermostable resin and its thickness is a function of the desired mechanical properties, more
Som, et resultat av å bruke en bøyelig bæredel 1As, a result of using a flexible support member 1
kan en tekstildekking innkorporeres for å forme elektriske tep-per, forheng og gulvtepper. a textile covering can be incorporated to form electric carpets, curtains and carpets.
Varmeeiementet ifølge oppfinnelsen kan også ha andre anvendelser enn romoppvarming. Det kan f.eks. danne basisen for et elektrisk strykejern, for steke- og kokeredskaper som har en uavhengig krafttilførsel, innleggsåler for fottøy etc. The heating element according to the invention can also have other uses than space heating. It can e.g. form the basis for an electric iron, for frying and cooking utensils that have an independent power supply, insoles for footwear, etc.
Claims (8)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR7409440A FR2265243A1 (en) | 1974-03-20 | 1974-03-20 | Radiation heating element for e.g. cooking - has thin metal heating circuit on a thin insulating layer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| NO750931L true NO750931L (en) | 1975-09-23 |
Family
ID=9136590
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NO750931A NO750931L (en) | 1974-03-20 | 1975-03-19 |
Country Status (11)
| Country | Link |
|---|---|
| BE (1) | BE826929A (en) |
| BR (1) | BR7501669A (en) |
| DE (1) | DE2512297A1 (en) |
| DK (1) | DK118275A (en) |
| ES (1) | ES425632A1 (en) |
| FI (1) | FI750815A (en) |
| FR (1) | FR2265243A1 (en) |
| IT (1) | IT1034450B (en) |
| NL (1) | NL7503262A (en) |
| NO (1) | NO750931L (en) |
| SE (1) | SE7503198L (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| IT1271660B (en) * | 1994-07-14 | 1997-06-04 | Cadif Srl | APPARATUS FOR THE TRANSFORMATION OF ELECTRICITY INTO HEAT |
| FR2766258A1 (en) * | 1997-07-17 | 1999-01-22 | Innovation Technologique Aquit | Lamp base with heating element for drinks |
| AT515404B1 (en) * | 2014-01-20 | 2019-02-15 | Ing Gerfried Cebrat Dipl | Energy-saving filtering floor lamp with radiant heating surface |
| AT515422B1 (en) * | 2014-09-18 | 2015-09-15 | Redwell Manufaktur Gmbh | Light and heat radiator |
-
1974
- 1974-03-20 FR FR7409440A patent/FR2265243A1/en active Granted
- 1974-04-24 ES ES425632A patent/ES425632A1/en not_active Expired
-
1975
- 1975-03-19 FI FI750815A patent/FI750815A/fi not_active Application Discontinuation
- 1975-03-19 NO NO750931A patent/NO750931L/no unknown
- 1975-03-19 NL NL7503262A patent/NL7503262A/en not_active Application Discontinuation
- 1975-03-20 DE DE19752512297 patent/DE2512297A1/en active Pending
- 1975-03-20 BE BE154542A patent/BE826929A/en unknown
- 1975-03-20 BR BR1669/75A patent/BR7501669A/en unknown
- 1975-03-20 DK DK118275A patent/DK118275A/da unknown
- 1975-03-20 IT IT21479/75A patent/IT1034450B/en active
- 1975-03-20 SE SE7503198A patent/SE7503198L/xx unknown
Also Published As
| Publication number | Publication date |
|---|---|
| FR2265243A1 (en) | 1975-10-17 |
| FI750815A (en) | 1975-09-21 |
| DE2512297A1 (en) | 1975-09-25 |
| DK118275A (en) | 1975-09-21 |
| NL7503262A (en) | 1975-09-23 |
| FR2265243B1 (en) | 1977-03-18 |
| BE826929A (en) | 1975-07-16 |
| IT1034450B (en) | 1979-09-10 |
| SE7503198L (en) | 1975-09-22 |
| ES425632A1 (en) | 1976-07-01 |
| BR7501669A (en) | 1975-12-16 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JPH10509271A (en) | Resistance heating element having thin film in large area and method of manufacturing the same | |
| US2939807A (en) | Method of making a heating panel | |
| TWI245808B (en) | Organic EL of evaporation device for evaporation | |
| JP3372545B2 (en) | Heat dispersion equipment | |
| SE7610982L (en) | ELECTRIC RADIATION HEATING ELEMENT FOR KOKHELL | |
| NO750931L (en) | ||
| CN110740532A (en) | heating assembly, preparation method thereof and kitchen appliance | |
| CN105795955B (en) | Electric heating cooking utensil | |
| RU2075837C1 (en) | Infrared radiation heater | |
| US3327093A (en) | Directional electric heating panel | |
| US7041942B2 (en) | Heating plate assembly for a cooking appliance | |
| Withrow et al. | Water-cooled lamp systems with refluxing aqueous filters | |
| TWI262217B (en) | Vaporizing device | |
| KR101338024B1 (en) | Face type heating element | |
| US2742556A (en) | Heating panel | |
| US1247125A (en) | Armored conductor. | |
| WO2020206653A1 (en) | Heating element used for electric heating product and method for manufacture thereof | |
| JPS60124384A (en) | Heat limiter | |
| KR100237146B1 (en) | The heatable rotation table | |
| GB926002A (en) | Improvements in radiant electrical resistance heaters and the production thereof | |
| NO120482B (en) | ||
| JPH0561754B2 (en) | ||
| US4113978A (en) | Evaporation source for vacuum deposition | |
| CN111818672A (en) | Heating element for electric heating articles and manufacturing method thereof | |
| CN210112300U (en) | Resistance heating device |