CN101603733B - Electric resistance heat element for a heating device for heating a flowing gaseous medium - Google Patents
Electric resistance heat element for a heating device for heating a flowing gaseous medium Download PDFInfo
- Publication number
- CN101603733B CN101603733B CN2009102034001A CN200910203400A CN101603733B CN 101603733 B CN101603733 B CN 101603733B CN 2009102034001 A CN2009102034001 A CN 2009102034001A CN 200910203400 A CN200910203400 A CN 200910203400A CN 101603733 B CN101603733 B CN 101603733B
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- China
- Prior art keywords
- stratie
- heating resistor
- heating
- support plate
- ceramic material
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- Expired - Fee Related
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Classifications
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- 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
- F24H3/02—Air heaters with forced circulation
- F24H3/04—Air heaters with forced circulation the air being in direct contact with the heating medium, e.g. electric heating element
- F24H3/0405—Air heaters with forced circulation the air being in direct contact with the heating medium, e.g. electric heating element using electric energy supply, e.g. the heating medium being a resistive element; Heating by direct contact, i.e. with resistive elements, electrodes and fins being bonded together without additional element in-between
- F24H3/0423—Air heaters with forced circulation the air being in direct contact with the heating medium, e.g. electric heating element using electric energy supply, e.g. the heating medium being a resistive element; Heating by direct contact, i.e. with resistive elements, electrodes and fins being bonded together without additional element in-between hand-held air guns
-
- 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
- F24H3/02—Air heaters with forced circulation
- F24H3/04—Air heaters with forced circulation the air being in direct contact with the heating medium, e.g. electric heating element
- F24H3/0405—Air heaters with forced circulation the air being in direct contact with the heating medium, e.g. electric heating element using electric energy supply, e.g. the heating medium being a resistive element; Heating by direct contact, i.e. with resistive elements, electrodes and fins being bonded together without additional element in-between
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- 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—Heater elements characterised by the composition or nature of the materials or by the arrangement of the conductor
- H05B3/12—Heater elements characterised by the composition or nature of the materials or by the arrangement of the conductor characterised by the composition or nature of the conductive material
- H05B3/14—Heater elements characterised by the composition or nature of the materials or by the arrangement of the conductor characterised by the composition or nature of the conductive material the material being non-metallic
- H05B3/141—Conductive ceramics, e.g. metal oxides, metal carbides, barium titanate, ferrites, zirconia, vitrous compounds
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- 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—Heater elements characterised by the composition or nature of the materials or by the arrangement of the conductor
- H05B3/16—Heater 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
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- 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
-
- 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
- H05B2203/018—Heaters using heating elements comprising mosi2
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- 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
- H05B2203/02—Heaters using heating elements having a positive temperature coefficient
Abstract
The invention discloses an electric resistance heat element for a heating device for heating a flowing gaseous medium. The invention relates to an electrical resistance heating element for a heating device, with at least one flow canal through which the gaseous medium is able to flow from a canal inlet side to a canal outlet side of the resistance heating element, and with at least one heating resistor that extends essentially in the direction of the flow canal, with the medium flowing past the heating resistor and being heated in the process. The heating resistor is rod-shaped and produced from an electrically conductive ceramic material. The electrical resistance heating element is intended for installation in a heating tube into which air, for example, is blown at one end. The heated flow of air exits from the other end of the heating tube.
Description
Technical field
The present invention relates to be used for the stratie of the heater of heated air medium; Has at least one heating resistor; Said at least one heating resistor roughly extends at the longitudinal direction of stratie, and said MEDIA FLOW is heated through said heating resistor and in this process.Said stratie has at least one flow duct; Said at least one flow duct is extended along said heating resistor; And said gas medium can be through said at least one flow duct from the entrance effluent of said stratie to the pipe outlet side, said heating resistor comprises the conducting ceramic material that is used for guide current.The present invention also relates to be used for the heater of flowing gaseous medium, said heater is equipped with such stratie.
Background technology
In this article, heater refers to stratie particularly and is arranged on firing equipment, module or system in the heating tube.For example, air or gas are blown into an end of said pipe, and air or gas after heating stream is discharged from the other end.Air stream can be produced by the hair-dryer that is arranged on the heater, or can offer heater by the extraneous air flow-generator, or under the situation of gas stream, can be provided by preferred pressurized gas reservoirs.
This heater is known and is widely used in industry and the commerce.In these devices; For air or the gas stream that produces heat; Cold gas medium stream is towards the stratie guiding, and then through and/or along the heating element heater guiding that is exposed to said stream, wherein; Because cold medium contacts with hot heating resistor, thereby cold medium is constantly heated to the way of outlet side at the entrance side from heating resistor.Through heating element heater, said flow duct is surrounded at least one heating resistor to flowing gaseous medium in one or several flow duct.
Can know this heater of hot air device form from DE 198 39 044A1, wherein, stratie is arranged in the heating tube.Usually, various nozzles can be attached to the heating tube side relevant with heating element heater air outlet slit side.Said heating element heater comprises the carrier of being processed by the high-heat strength ceramic material, and said carrier remains on the connector via centrepin, and said connector is arranged on the side of hair-dryer.Also as the electrical connection of heating resistor, heating resistor is formed by the heating wire that in the air duct of center, extends with helical configuration this connector.Thin ceramic cover plate is arranged on the air outlet slit side of heating element heater, and cover plate is also kept by centrepin.Connector and cover plate have the passage that is used for air stream, thereby allow air stream unhinderedly through having the air duct of heating resistor.
If under the situation that this employed stratie is not having enough air to flow in the certain hour amount, work, heating wire will burn usually, thereby make heating element heater not use.Not enough air stream maybe be restricted and cause by the air inlet/outlet cross section of for example hair-dryer fault or hot air device.For this reason, need carry out the measure of privacy protection property electricity can not suffer with the protection heating wire undesirable overheated.For this reason, commercial hot air device is equipped with heat sensor or switch usually, and when having overheated risk, said heat sensor or switch reduce or interrupt offering the power of heating resistor.
About prior art, with reference to publication DE 10 12 675A1, US 6,442,342B1 and EP 0 899 985.
US 6,442, and 342B1 also discloses a kind of flow-through heater that is used for liquid.Disclosed flow-through heater has the stratie that is embedded in the metal shell.In said housing, the flow duct that is used for liquid is parallel to a heating element heater at a certain distance and extends.Stratie itself does not have all-in-one-piece flow duct, and its whole surface directly contacts with housing.The heat that comes from heating element heater passes to the flowing liquid along the housing cross section indirectly, and the tubulose flow duct is set in the housing cross section, and said housing is processed by the material with good heat conductivity.
EP 0 899 985A1 relate to a kind of flow-through heater of liquid of the closed circulation system that is used for the heater motor vehicle.Said flow-through heater comprises at least one heating main body; Said at least one heating main body has at least one pipeline and at least one PCT heating element heater; Flow of liquid to be heated is through said at least one pipeline, and said at least one PCT heating element heater is used to heat the heating main body that the next-door neighbour is provided with.Its 26S Proteasome Structure and Function is substantially similar to US 6,442, the disclosed flow-through heater of 342B1.Difference is to have a plurality of flow duct and a plurality of heating element heater.
Summary of the invention
The invention solves the problem of the improvement stratie of the heater that proposes to be used for flowing gaseous medium, wherein, even under the situation that does not have the measure of privacy protection property, reduced overheated risk.
According to the present invention, this problem solves by the stratie of the characteristic with claim 1 and by the heater that is used for flowing gaseous medium according to claim 10.Additional advantageous embodiment provides in the dependent claims.
According to the present invention, the heating resistor of said stratie is a rod, and heating resistor is kept by support plate, and said support plate is arranged on the entrance side and the pipe outlet side of stratie, and flow duct continues in said support plate.The end of heating resistor engages said support plate on one's own initiative.
In this article, the rod heating resistor refers to its length obviously greater than the solid heating resistor of width.The cross sectional shape of heating resistor can be selected arbitrarily, and also can vary along its length.At longitudinal direction, heating resistor also can have two or more parallel portion that are connected to each other with the formation current path.
Heating resistor comprises the conducting ceramic material that is used for guide current.Conducting ceramic material itself can be used as the ceramic heat resistor, maybe can be set to the sheath of ceramic bar, and ceramic bar comprises non-conductive ceramic material.This heating resistor has high mechanical strength and electrical wear intensity and calorific intensity, thereby can have long working life.In addition, the ceramic material that is used for this device also has the splendid attribute about heat and electrical conductivity.The influence that electric current through heating resistor can receive the conductibility of ceramic material and receive the geometry of ceramic heat bar.Through conduction and the non-conducting portion that changes its component, the electric conductivity of ceramic material can change in wide scope.Owing to compare with known heating element heater, higher temperature and faster variations in temperature be possible, thereby additional benefits is arranged.
Electrical heating elements according to the present invention is contemplated to for example air heater, and said air heater is to be generally used for 48V voltage power supply in boats and ships and the airborne vehicle or the 110V that provides as line voltage with Utilities Electric Co., 230V or 380V work.For this reason, the resistance of ceramic rod heating resistor must be enough high.This can be through conducting ceramic material high resistivity and/or the geometry design through the ceramic heat resistor realize.
Provided the preferred embodiment of stratie, wherein, conducting ceramic material has the resistivity between 0.01 to the 1.0 Ω-cm, and/or the length of the ceramic material of heating resistor-area of section compares 1 to 500cm
-1Between.
Because attainable resistivity value and operating voltage, the Long Circle heating element heater must be used for according to stratie of the present invention.For fear of the electric connection technology of costliness, the side of hotter during operation heating resistor, i.e. the pipe outlet side of stratie, U-shaped rod heating resistor provides benefit.This makes the length doubles of ceramic heat bar, thereby its resistance value doubles.In order further to increase the resistance of stratie and the contact area of increase and flowing gaseous medium, a plurality of preferred U-shaped heating resistors can be set.Depend on the voltage available source with the expectation power value, they can the parallel connection or be connected in series.
Electrically contact in order to set up, if the end of rod heating resistor applies with metal level, it can realize this purpose.This coating can for example apply by means of vapour deposition or through sputter.Preferably, use metal paste (metal paste), said metal paste comprises silver and possible additional noble metal usually, like platinum or palladium.
In a preferred embodiment of the invention, keep the support plate of heating resistor to form by non-conductive ceramic material.Except electrical conductivity, said support plate has and the similar certain material characteristics of ceramic heat bar.
In addition, said support plate preferably has recess and also has passage, and the cross sectional shape of said recess and heating resistor matees, and is used to receive the end of heating resistor, and gas medium stream can pass through said passage.
Preferably, stratie according to the present invention has a plurality of ceramic heat bars that are provided with around the heating element heater centres.By means of its front-end and back-end part, each U-shaped heating resistor remains in the support plate recess on one's own initiative, and said support plate is fixed to one another by means of the common center pin that extends at axial direction.Heating resistor is electrically connected to each other through the support plate recess on the entrance side and is electrically connected on the power line.In addition, MEDIA FLOW can be passed through flow duct, and said flow duct is extended between two support plates, and at least one heating resistor is arranged in the said flow duct by means of the passage that passes two support plates.
In an embodiment according to stratie of the present invention, heating resistor is connected to support plate on one's own initiative.In order the Long Circle heating resistor to be kept putting in place with support plate, support plate can before the sintering process, during or permanently connect each other afterwards.Compare with the conventional, electric-resistance heating element heater, the heating element heater of processing by this way and need not guided or supported from supporting by add ons.The ceramic heat resistor is remained on support plate on the both sides must be able to bear and substantially exceed 1000 ℃ temperature, for example, in the air outlet slit side of stratie.
U-shaped ceramic heat resistor can have smooth or patterned surface.Provided the preferred embodiments of the present invention, wherein, heating resistor has recess and/or high zone, thereby compares with flat surfaces, has increased the surface area that contacts with gas medium.Except the big as far as possible surface area with the flow media heat exchange was provided, this more complicated geometry also had the effect that produces turbulent flow in the medium of heating resistor in the flow duct of flowing through.One of the whole MEDIA FLOW of this turbulence is made peace and is evenly heated.
Advantageously, the conducting ceramic material of heating resistor comprises the hybrid ceramic material with conduction and non-conductive component, and the conductivity ceramics component has 0 to 10, the positive thermal conductivity factor between the 000ppm/K.Preferably, molybdenum disilicide (MoSi
2) as conductivity ceramics component, aluminium oxide (Al
2O
3) as non-conductive ceramic composition.
Preferably, positive thermal conductivity factor should not crossed suddenly and rise, because this possibly cause forming focus.And, the steep side of resistivity should not take place in up to about 1500 ℃ operating temperature, in having some conducting ceramic materials of positive thermal conductivity factor usually so.The hybrid ceramic material also can comprise additional additives, to improve sintering characteristic or stability.Also can partly use other insulating ceramic materials (as, oxide or nitride or silicate ceramic ceramic material) instead of alumina.The resistivity of material can be set within the specific limits through the ratio of conductive component.The molybdenum disilicide of 20% to 30% ratio is proved to be desirable in the hybrid ceramic material.This makes realizes that when room temperature the resistivity between 0.01 to the 1.0 Ω-cm is possible, and said resistivity increases by 3 times or more up to 1000 ℃ the time.
The heater according to the present invention (for example hot air device) has stratie; Said heater comprises the stratie of the present invention that has according to claim 1 characteristic, and said stratie is arranged in the gas medium stream and by heating tube and surrounds.At heating tube one end, for example air or gas are blown into as medium, and air or gas after heating stream is discharged from the other end of heating tube.Air or gas stream can be produced by the hair-dryer that is arranged on the heater, or can offer heater by the external pressurized reservoir.
Hereinafter, set forth the present invention in detail with reference to two embodiment shown in the drawings.Bells and whistles of the present invention is in the following explanation of the embodiment of the invention and combine claim and accompanying drawing to provide.Autonomous behavior of the present invention can itself realize independently, or makes up with a plurality of characteristics in the different embodiments of the invention.Illustrated embodiment is used for heated air flow.
Description of drawings
Fig. 1 shows the sectional view according to stratie of the present invention;
Fig. 2 shows the vertical view of the support plate of Fig. 1;
Fig. 3 shows the perspective view of the heating resistor of Fig. 1;
Fig. 4 shows second embodiment of the heating resistor with smooth surface;
Fig. 5 shows the 3rd embodiment of the heating resistor with patterned surface;
Fig. 6 shows and second embodiment according to the support plate of the heating resistor of Fig. 5 coupling;
Fig. 7 shows the perspective view according to first heater of the present invention; With
Fig. 8 shows the perspective view according to second heater of the present invention.
The specific embodiment
Fig. 1 shows the embodiment according to stratie 1 of the present invention, and stratie 1 has four heating resistors 2 in axial, cross-sectional view, only can see two heating resistors in the accompanying drawings.Heating resistor 2 is general rod shaped and has front-end and back-end part 3,4.Rear end part 4 is relevant with air intake side 5, and fore-end is relevant with the air outlet slit side 6 of stratie 1.Heating resistor 2 be U-shaped and have flat surfaces 7, end 8,8 ', limb portion 9,9 ' and base portion 10, base portion 10 connects limb portion 9,9 '.The end 8 ' of heating resistor 2 connects by means of the mode of electric bridge 11 with conduction.Power line 12 leads to the end 8 of heating resistor 8.
Like Fig. 1, shown in 2, stratie has Long Circle and substantial cylindrical shape.Fig. 2 shows the vertical view of support plate 13,14, and support plate 13,14 comprises the circular flat board of being processed by non-conductive ceramic material.The inner surface relevant that accompanying drawing shows support plate 13,14 with heating resistor 2. Support plate 13,14 has recess 17, and recess 17 has hole 18, is used to receive the front-end and back- end part 3,4 of heating resistor 2.In addition, be provided for the center attachment hole 20 of pin 15, pin 15 connects support plate 13,14.The hole 18 of recess 17 is used for the electrical connection of heating resistor 2.
Fig. 3 shows first embodiment of the U-shaped heating resistor of being processed by conducting ceramic material 2.Limb portion 9,9 ' has the square-section with base portion 10 and is arranged on the plane.Surface 7 is smooth.
Fig. 4 shows second modification of heating resistor shown in Figure 32, and wherein, limb portion 9 has the square-section and limb portion 9 ' has the triangular-section with base portion 10, forms 1/8th corresponding barrel portions with right circular cylinder together.The surface 7 of limb portion 9,9 ' is smooth and court inclines towards each other.
Fig. 5 shows the 3rd embodiment of U-shaped heating resistor 2.Limb portion 9,9 ' has the general triangular cross section with base portion 10.They are designed to make them to form together and cylindrical 1/4th corresponding barrel portions.The surface 7 of limb portion 9,9 ' is structurized.It has recess 21 and the high zone 22 of rising, with the surface 7 of increase with air streams contact.In addition, patterned surface 7 has the beneficial effect of the turbulent flow that produces air stream, thereby guarantees its even heating.
Fig. 6 shows the support plate 13,14 with heating resistor shown in Figure 52 couplings.Support plate 13,14 has annular, essentially rectangular recess 17, and is suitable for initiatively being connected to heating resistor 2.For this reason, heating resistor 2 is arranged in the bight 23 of recess 17.In addition, support plate 13,14 has the passage 19 that is used for air stream, and recess 17 has hole 18, is used for the electrical connection of heating resistor 2.
The support plate 13,14 of heating resistor 2 couplings not shown and shown in Figure 4.Their design can be similar to support plate shown in Figure 6 13,14, and wherein, the shape of recess 17 is fit to the different cross section of the barrel portion of heating resistor 2.
Fig. 7,8 show two embodiment according to hot air device 24,25 of the present invention.Hot air device 24 shown in Figure 7 is the hot air device that do not have the monoblock type hair-dryer, and hair-dryer can be installed on the frame by enough flanges.Air stream offers hot air device 24 from the outside.Hot air device 25 shown in Figure 8 is equipped with inner hair-dryer and can be used as the hand-held hot air device.In addition, two Design of device are roughly similar.They have the housing 26 that has preceding heating tube 27.Stratie 1 (not shown in FIG.) according to the present invention is installed in the heating tube 27.The air outlet slit side 6 of stratie 1 is towards the direction of the air outlet slit opening 28 of heating tube 27, and air intake side 5 is towards the rear end of housing 26.The heating resistor 2 of stratie 1 provides voltage via housing 26.
Claims (12)
1. stratie (1) that is used for the heated air medium has:
At least one heating resistor (2), said at least one heating resistor (2) extends at the longitudinal direction of said stratie (1), and said MEDIA FLOW is heated through said heating resistor and in this process; With
At least one flow duct (16); Said at least one flow duct (16) is extended along said heating resistor (2); And said medium can flow to pipe outlet side (6) from the entrance side (5) of said stratie (1) through said at least one flow duct (16); Said heating resistor (2) comprises the conducting ceramic material that is used for guide current, it is characterized in that:
Said heating resistor (2) be rod and keep said support plate (13 by support plate (13,14); 14) be arranged on the said entrance side (5) and the said pipe outlet side (6) of said stratie (1); And the side of said flow duct (16) is surrounded by said support plate, the end (8,8 ' of said heating resistor (2); 10) engage said support plate (13,14) on one's own initiative.
2. stratie according to claim 1 (1) is characterized in that: said conducting ceramic material has the resistivity between 0.01 to the 1.0 Ω-cm.
3. stratie according to claim 1 and 2 (1) is characterized in that: the length of the ceramic material of said heating resistor-area of section ratio is 1 to 500
-1Between.
4. stratie according to claim 1 and 2 (1) is characterized in that: said heating resistor (2) is a U-shaped.
5. stratie according to claim 1 and 2 (1) is characterized in that: said support plate (13,14) is processed by non-conductive ceramic material.
6. stratie according to claim 1 and 2 (1); It is characterized in that: said support plate (13,14) has recess (17) and also has passage (19), and said recess (17) matees with the cross sectional shape of said heating resistor (2); And be used to receive the end (8 of heating resistor (2); 8 ', 10), gas medium stream can pass through said passage (19).
7. stratie according to claim 1 and 2 (1) is characterized in that: said heating resistor (2) is connected to said support plate (13,14) on one's own initiative.
8. stratie according to claim 1 and 2 (1) is characterized in that: said heating resistor (2) has recess (21) and/or high zone (22), thereby compares with flat surfaces, has increased the surface (7) that contacts with gas medium stream.
9. stratie according to claim 1 and 2 (1) is characterized in that: said conducting ceramic material is the hybrid ceramic material with conduction and non-conductive component, and the conductivity ceramics component has positive thermal conductivity factor.
10. stratie according to claim 9 (1) is characterized in that: molybdenum disilicide (MoSi
2) as the conductivity ceramics component.
11. stratie according to claim 9 (1) is characterized in that: aluminium oxide (Al
2O
3) as non-conductive ceramic composition.
12. heater (24 that is used for the heating flowing gas medium; 25); Comprise the electrical heating elements that surrounds by heating tube (27); Said heating tube (27) is arranged in the gas medium stream, and said gas medium stream produces or provides from the external pressurization reservoir by being arranged on hair-dryer on the heater (25), it is characterized in that this electrical heating elements is stratie according to claim 1 (1).
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP08010426.8 | 2008-06-09 | ||
| EP08010426A EP2134143B1 (en) | 2008-06-09 | 2008-06-09 | Electric resistance heat element for a heating device for heating a flowing gaseous medium |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101603733A CN101603733A (en) | 2009-12-16 |
| CN101603733B true CN101603733B (en) | 2012-08-29 |
Family
ID=39865644
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009102034001A Expired - Fee Related CN101603733B (en) | 2008-06-09 | 2009-06-09 | Electric resistance heat element for a heating device for heating a flowing gaseous medium |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US20090304372A1 (en) |
| EP (1) | EP2134143B1 (en) |
| JP (1) | JP4977844B2 (en) |
| CN (1) | CN101603733B (en) |
| AT (1) | ATE492140T1 (en) |
| DE (1) | DE502008002030D1 (en) |
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| DE102021215100A1 (en) | 2021-12-30 | 2023-07-06 | BSH Hausgeräte GmbH | household steamer |
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2009
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| CN1320351A (en) * | 1999-08-10 | 2001-10-31 | Ibiden股份有限公司 | Ceramic heater |
| DE10012675A1 (en) * | 2000-03-15 | 2001-09-20 | Votup & Co Innovative Keramik | Electric throughflow resistive heating element has heating ribs with electrode coatings protruding into throughflow channel, preferably at regular intervals |
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| EP1814362A1 (en) * | 2006-01-30 | 2007-08-01 | Leister Process Technologies | Heating element for a hot air device |
Also Published As
| Publication number | Publication date |
|---|---|
| ATE492140T1 (en) | 2011-01-15 |
| CN101603733A (en) | 2009-12-16 |
| DE502008002030D1 (en) | 2011-01-27 |
| JP2009293916A (en) | 2009-12-17 |
| JP4977844B2 (en) | 2012-07-18 |
| US20090304372A1 (en) | 2009-12-10 |
| EP2134143B1 (en) | 2010-12-15 |
| EP2134143A1 (en) | 2009-12-16 |
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