EP0484327A1 - Arrangement for converting electrical energy to heat energy - Google Patents
Arrangement for converting electrical energy to heat energyInfo
- Publication number
- EP0484327A1 EP0484327A1 EP89911901A EP89911901A EP0484327A1 EP 0484327 A1 EP0484327 A1 EP 0484327A1 EP 89911901 A EP89911901 A EP 89911901A EP 89911901 A EP89911901 A EP 89911901A EP 0484327 A1 EP0484327 A1 EP 0484327A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- plate
- concrete
- sleeve
- arrangement
- resistance wire
- 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
Links
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
- H05B3/20—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
- H05B3/28—Heating elements having extended surface area substantially in a two-dimensional plane, e.g. plate-heater non-flexible heating conductor embedded in insulating material
- H05B3/283—Heating elements having extended surface area substantially in a two-dimensional plane, e.g. plate-heater non-flexible heating conductor embedded in insulating material the insulating material being an inorganic material, e.g. ceramic
-
- 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
- H05B3/28—Heating elements having extended surface area substantially in a two-dimensional plane, e.g. plate-heater non-flexible heating conductor embedded in insulating material
-
- 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
- F24C7/062—Arrangement or mounting of electric heating elements on stoves
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
- F24H3/00—Air heaters
- F24H3/002—Air heaters using electric energy supply
-
- 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
Definitions
- the present invention relates to an arrangement for converting electrical energy to heat energy, comprising a resistance wire, which can be connected to an electri ⁇ cal energy source, and a covering which screens the wire off from the environment.
- the invention also relates to a method for production of the arrangement.
- Known electric radiators with heat-generating resistance wires are usually constructed in a similar manner with a metal tube which is enclosed by plates and accommodates and screens the resistance wire, which wire is held at a distance from the metal tube by means of bodies of an electrically insulating, ceramic material.
- the aim of the invention is to provide an arrangement and a method permitting production of electric radiators which do not have the abovementioned disadvantages.
- the arrangement according to the invention is characterized in that the covering comprises an electrically insulating sleeve surrounding the resistance wire, and a plate-shaped support of concrete enclosing the sleeve.
- This arrangement affords a completely silent radiator element, which forms a heat magazine when the current supply is interrupted.
- the concrete is reinforced with fibres of a heat-tolerating material.
- the heat-generating plate can be made thin, with retained strength, for more effective heat emission from the resistance wire.
- the sleeve advantageously comprises a woven tubing of glass fibres. Such a tubing has very high resistance to wear, which reduces the risk of damage to the electrical insulation during the production procedure.
- the tubing is impregnated with heat- tolerating silicone rubber.
- the resistance wire advantageously runs in a zigzag formation across the plane of the plate.
- the resistance wire advantageously runs in a zigzag formation in the vertical direction across the plane of the plate, with increasing mutual spacing between parallel wire sections in the upward direction.
- the temperature can be distributed more evenly in the plane of the plate, taking into account the fact that the air is heated up as it passes along the outside of the plate.
- the concrete plate is advantageously fitted inside a container which is provided with vertical air passages and members for temperature regulation of the current to the resistance wire. This affords an electric radiator with an advantageously low outer temperature and a high storage capacity.
- a method for producing an arrangement for converting electrical energy to heat energy which arrangement comprises a resistance wire, which can be connected to an electrical energy source, and a covering which screens the wire off from the environment and consists of an electrically insulating sleeve and a plate-shaped con ⁇ crete support surrounding the sleeve is characterized in that a first concrete plate half is cast with a channel designed for drawing through of the resistance wire and its sleeve, in that the resistance wire with its sleeve is placed in the channel, and in that a second concrete plate half is cast on top of the first one.
- the first concrete plate half is cast with a number of holes which are directed transverse to the plane of the plate and which diverge in the direction from the second concrete plate half and are intended to be filled with concrete upon casting of the said second half.
- Fig. 1 is a broken perspective view showing an electric radiator with a plate, designed according to the inven ⁇ tion, for converting electrical energy to heat energy.
- Fig. 2 is a plan view showing the plate in a section in the plane of the plate, and Fig. 3 shows part of Fig. 2 on a larger scale.
- Fig. 1 shows an electric radiator 10 which has two container halves 10a, 10b made of concrete, which sur ⁇ round a vertically standing plate 11.
- the plate 11 is held centred in an inner space between the container halves by means of a number of support shoulders 12, so that air gaps are maintained between the outer sides of the plate and the container halves.
- the container halves 10a, 10b are provided with a number of vertical air channels 13 which connect the above- mentioned inner space to the atmosphere surrounding the electric radiator.
- Electric current can be fed to the radiator via a flex 14 and via a thermostat which can be controlled from the operating panel 15.
- a resistance wire 16 drawn inside the plate 11 is connected to the thermostat and the operating panel.
- the plate 11 is cast from concrete in such a way that it encloses the resistance wire 16 along the whole of its length, except at the screw connections 17.
- glass fibres have been mixed into the concrete before casting.
- the resistance wire 16 which is wound in a helix and is made for example of nickel kanthal, is surrounded by an electrically insulat ⁇ ing sleeve, which can consist for example of a woven tubing 18 of glass fibres which has a high heat tolerance and extraordinarily high resistance capacity to mechani ⁇ cal wear.
- an electrically insulat ⁇ ing sleeve which can consist for example of a woven tubing 18 of glass fibres which has a high heat tolerance and extraordinarily high resistance capacity to mechani ⁇ cal wear.
- the tubing has been impregnated with silicone rubber 19.
- the helical turning of the resistance wire has been made tighter at the ends in order to form an engagement for the screw connections 17.
- the plate 11 can be cast in two separate halves, which are provided on the opposite sides with a channel 20 for the resistance wire and its sleeve 18.
- the resistance wire is laid in place in the channel of one plate half, and the second plate half is stuck or bolted securely on the first one. Thereafter, the plate is fitted between the two container halves 10a, 10b.
- the resistance wire runs in a zigzag formation in the vertical direction across the plane of the plate with increasing mutual spacing between parallel wire sections 16a, in the upward direction, the temperature is distributed more evenly in the plane of the plate since the air is heated up as it passes along the outside of the plate.
- the second plate half can be cast on the first one.
- the first half can be provided with a number of holes 21, which diverge in the direction from the second plate half and are intended to be filled with concrete upon casting of the said second half.
- the plate 11 can be produced in different sizes and used in contexts other than that shown.
- the radiator shown in Fig. 1 can be produced in different sizes with more than one plate, for example in power sizes of between 500 and 800 W.
- Conceivable alternative areas of application are hot plates for keeping food hot, and hot-air fans. Teflon tubes can be used as a sub ⁇ stitute for the glass fibre tubing 18.
Abstract
Un agencement de conversion d'énergie électrique en énergie thermique comprend un fil de chauffage (16) qui peut être connecté à une source d'énergie électrique et un couvercle (11, 18) qui isole le fil de l'environnement. Le couvercle comprend un manchon électro-isolant (18) qui entoure le fil de chauffage (16) et un support plat (11) coulé dans du béton qui entoure le manchon. Selon un procédé de production de l'agencement, on coule une première moitié de la plaque en béton avec un canal (20) de passage du fil de chauffage (16) et de son manchon (18). Ensuite, on place le fil de chauffage avec son manchon dans le canal (20) et on coule la deuxième moitié de la plaque en béton sur la première moitié.An arrangement for converting electrical energy to thermal energy includes a heating wire (16) which can be connected to a source of electrical energy and a cover (11, 18) which isolates the wire from the environment. The cover comprises an electrically insulating sleeve (18) which surrounds the heating wire (16) and a flat support (11) cast in concrete which surrounds the sleeve. According to a production method of the arrangement, a first half of the concrete plate is cast with a channel (20) for passing the heating wire (16) and its sleeve (18). Then, the heating wire with its sleeve is placed in the channel (20) and the second half of the concrete plate is poured over the first half.
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SE8900844A SE8900844D0 (en) | 1989-03-10 | 1989-03-10 | DEVICE FOR CONVERSION OF ELECTRICAL ENERGY TO HEAT ENERGY |
SE8900844 | 1989-03-10 |
Publications (1)
Publication Number | Publication Date |
---|---|
EP0484327A1 true EP0484327A1 (en) | 1992-05-13 |
Family
ID=20375297
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP89911901A Ceased EP0484327A1 (en) | 1989-03-10 | 1989-10-17 | Arrangement for converting electrical energy to heat energy |
Country Status (8)
Country | Link |
---|---|
EP (1) | EP0484327A1 (en) |
JP (1) | JPH04504183A (en) |
KR (1) | KR920700522A (en) |
AU (1) | AU4425089A (en) |
DK (1) | DK155891D0 (en) |
FI (1) | FI914164A0 (en) |
SE (1) | SE8900844D0 (en) |
WO (1) | WO1990011002A1 (en) |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2690807B1 (en) * | 1992-04-29 | 1999-01-15 | Seb Sa | HEATING DEVICE, ESPECIALLY TOWEL DRYER, WITH ELECTRIC HEATING CORD. |
FR2811854B1 (en) * | 2000-07-17 | 2003-01-10 | E G O Production | DOUBLE INSULATION HEATING ELEMENT FOR ELECTRIC RADIATOR |
JP2006324164A (en) * | 2005-05-20 | 2006-11-30 | Japan Pionics Co Ltd | Planar heating element and anti-fogging mirror using it |
GB2431224B (en) * | 2005-10-13 | 2009-10-28 | Basic Holdings | Convection heater |
FR2949180B1 (en) * | 2009-08-14 | 2011-09-09 | Fernand Scherrer | DEVICE FOR ELECTRICAL HEATING OF SLAB WITH ELECTRICAL CABLES |
JP5745474B2 (en) * | 2012-08-07 | 2015-07-08 | 三菱電機株式会社 | Air cleaner |
AT514082B1 (en) * | 2013-05-31 | 2014-10-15 | Christian Fuchs | Structural component with electrical heating element, heating device with such a structural component and method for producing such a structural component |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE538424C (en) * | 1931-11-13 | Oskar Arfeller | Mold for making ribbed plasterboards | |
US1968776A (en) * | 1933-10-16 | 1934-07-31 | Ralph F Schneider | Electric heater |
GB752005A (en) * | 1954-04-06 | 1956-07-04 | Blackburn J | Improvements in electric floor heating installations |
DE1191503B (en) * | 1958-07-16 | 1965-04-22 | H V E Electric Ltd | Electric space heater |
DE1142666B (en) * | 1959-04-10 | 1963-01-24 | Robert Alfred Frederick Jackso | Electric storage heater for space heating |
US2989613A (en) * | 1960-01-29 | 1961-06-20 | Linton Summit Coal Company Inc | Wrap-around heater |
GB1184209A (en) * | 1967-11-24 | 1970-03-11 | Kendells Stone & Paving Compan | Improvements relating to Electrical Heaters |
FR2616289B1 (en) * | 1987-06-05 | 1989-09-08 | Badaud Jean Paul | HEATING ELEMENT INCORPORATING A WASHING PLATE |
-
1989
- 1989-03-10 SE SE8900844A patent/SE8900844D0/en not_active Application Discontinuation
- 1989-10-17 WO PCT/SE1989/000574 patent/WO1990011002A1/en not_active Application Discontinuation
- 1989-10-17 JP JP1511023A patent/JPH04504183A/en active Pending
- 1989-10-17 KR KR1019900702389A patent/KR920700522A/en not_active Application Discontinuation
- 1989-10-17 EP EP89911901A patent/EP0484327A1/en not_active Ceased
- 1989-10-17 AU AU44250/89A patent/AU4425089A/en not_active Abandoned
-
1991
- 1991-09-04 FI FI914164A patent/FI914164A0/en not_active Application Discontinuation
- 1991-09-05 DK DK911558A patent/DK155891D0/en not_active Application Discontinuation
Non-Patent Citations (1)
Title |
---|
See references of WO9011002A1 * |
Also Published As
Publication number | Publication date |
---|---|
FI914164A0 (en) | 1991-09-04 |
DK155891A (en) | 1991-09-05 |
WO1990011002A1 (en) | 1990-09-20 |
JPH04504183A (en) | 1992-07-23 |
KR920700522A (en) | 1992-02-19 |
SE8900844D0 (en) | 1989-03-10 |
AU4425089A (en) | 1990-10-09 |
DK155891D0 (en) | 1991-09-05 |
SE8900844L (en) | 1990-09-11 |
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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 |
|
17P | Request for examination filed |
Effective date: 19910827 |
|
AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): AT BE CH DE FR GB IT LI LU NL SE |
|
17Q | First examination report despatched |
Effective date: 19920710 |
|
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: 19921231 |