EP1081986A2 - Rohrheizkörper mit NTC/PTC-Absicherung - Google Patents
Rohrheizkörper mit NTC/PTC-Absicherung Download PDFInfo
- Publication number
- EP1081986A2 EP1081986A2 EP00118875A EP00118875A EP1081986A2 EP 1081986 A2 EP1081986 A2 EP 1081986A2 EP 00118875 A EP00118875 A EP 00118875A EP 00118875 A EP00118875 A EP 00118875A EP 1081986 A2 EP1081986 A2 EP 1081986A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- heating element
- tubular
- tubular heating
- element according
- securing
- 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.)
- Granted
Links
Images
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
- H05B1/00—Details of electric heating devices
- H05B1/02—Automatic switching arrangements specially adapted to apparatus ; Control of heating devices
- H05B1/0227—Applications
- H05B1/0252—Domestic applications
- H05B1/0275—Heating of spaces, e.g. rooms, wardrobes
- H05B1/0283—For heating of fluids, e.g. water 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
- 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
- H05B3/48—Heating elements having the shape of rods or tubes non-flexible 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
- H05B3/00—Ohmic-resistance heating
- H05B3/78—Heating arrangements specially adapted for immersion heating
- H05B3/82—Fixedly-mounted immersion 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
- H05B2203/019—Heaters using heating elements having a negative temperature coefficient
-
- 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
-
- 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
- H05B2203/021—Heaters specially adapted for heating liquids
Definitions
- the invention relates to a tubular heater according to the preamble of the claim 1.
- Such tubular heaters are used for example in washing machines and serve there to heat the wash water or the wash liquor. To for this purpose they are through an opening in the wall of the wash tub arranged inside.
- the tubular radiators In addition to the tubular radiators, there is a monitoring device in modern washing machines necessary, which is able to control the temperature of the wash water to be recorded so that a temperature control or regulation of the water is possible is.
- the tub wall has further openings or the mounting flange the heater has an opening in the devices for detecting the Temperature of the wash liquor are used.
- the vat Due to the need to use both the tubular heater and various Temperature monitoring elements inside the tub of the washing machine the vat has a number of openings. Apart from the associated increased manufacturing costs these breakthroughs are well sealed, which in turn increases the cost the washing machine increased. In addition, by attaching the Temperature monitoring elements require additional assembly effort.
- a tubular heating element goes from the European patent application 0 660 644 out, in which a temperature sensor in the tubular casing end of the tubular heater is located near the inner wall.
- This solution requires as a result of Arrangement of the temperature sensor near the inner wall of the casing enlarged diameter, which in turn the opening in the tub enlarged and thus also increases the sealing problems. Beyond that Today, an increasingly compact design is sought for tubular heating elements Solution not possible.
- a securing element which depending on the Temperature changes its resistance value and which in the casing tube end of the Tubular radiator is housed, can with one and the same component next to the Civil protection also regulates or controls the temperature of the heating medium or the alkali can be achieved. Since the securing element in the unheated end of the jacket tube is arranged and therefore during the normal operation that coming from the heating element to the fuse element Heat is removed from the fluid to be monitored, the fuse element cooled by the fluid and thus increases the temperature of the fluid. With every temperature change also changes the resistance value of the fuse element, what is detected by the measuring circuit separate from the heating circuit becomes. From this change in the resistance value, the temperature of the fluids to be monitored are closed.
- the fuse element is in thermal contact with the Heating element.
- the fuse element In the event of a disaster, i.e. so if the Fuse element cooling fluid or medium, the fuse element immediately applied with the heat generated by the heating element.
- the resistance value changes faster than in the case of normal operation, which in turn closed the disaster and shutdown the Tubular heater can be made.
- the two functions - securing in the event of a disaster and monitoring the Alkali temperature - the fuse element that unites is in the casing tube end of the tubular heater. This will in addition to the breakthrough for the tubular heater no further openings in the wall of the Wash tub or in the flange of the heater necessary, which causes the Reduce the cost of the washing machine.
- the proposed solution allows the securing element to be arranged towards the casing tube axis in at least approximately concentric manner, whereby a particularly compact structure of the tubular heater is achieved.
- the diameter can be different from that of the European one Patent application 0 660 644 known tubular heater can be reduced.
- NTC or one or more PTC elements can be provided his.
- Two such elements can, for example, in a tubular heater be arranged on the two casing tube ends of such securing elements are installed.
- the Securing element with a piece of pipe or a slotted sleeve Connection element is in a thermally conductive, but electrically insulated connection.
- the Securing element can then coaxial to the inside of the pipe section Connection element may be arranged.
- the connection element Be connecting bolts, at the end facing the casing tube end Pipe piece is pushed, in which also facing the casing tube end In turn, the securing element is inserted. This allows you to see how already noted the diameter of the tubular heater with a good one Reduce the response of the safety element in the event of a catastrophe.
- the fuse element is electrically isolated from the pipe section, which as Connection of the heating element to the heating circuit is used, can be arranged it has proven to be advantageous if the securing element inside a Sleeve is insulated electrically insulated from the jacket of the sleeve. This can it is sufficient that the securing element only through the air surrounding it is isolated. However, since slight changes in position already result in one electrical contact to the inner peripheral wall of the sleeve, it is more advantageous if the securing element in the interior of the sleeve in one electrically insulating material is embedded.
- the pipe section can be designed so that it immediately as electrical connection to the heating circuit.
- the sleeve is made of a good electrically conductive material and acts as a connection to the heating circuit.
- the security element also the disaster shutdown to perform, it is also advantageous if the jacket of the Sleeve is made of sufficient, preferably good heat-conducting material.
- the connecting element in the to the front end of the jacket tube facing end has an outwardly open cavity in which the Fuse element is housed electrically insulated from the connecting element.
- the securing element by means of an electrically insulating but sufficiently thermally conductive resin potting the cavity of the connecting element is housed.
- the measuring circuit can be designed as a resistance measuring circuit the change in resistance on the fuse element by means of a Ohmmeters directly measures.
- the Measuring circuit is a measuring circuit, the current and / or voltage changes on Securing element detected due to its change in resistance.
- the tubular heater 10 shown only partially in FIG. 1 has a jacket tube 12, which has a circular cross section.
- the two front ends 12a of the casing tube 12 are open to the outside, it being noted that in Fig. 1 only one of the two ends 12a is shown.
- the casing tube 1 2 of the tubular heater 10 can be bent into any desired shape be, for example in a horseshoe shape, W shape, etc.
- a sufficiently or good heat-conducting material is used, for example stainless steel or aluminum.
- a Heating element arranged in the form of a filament 14, which consists of a Current flow heating resistance wire material is made.
- the heating wire coil 14 is in an electrically insulating but thermally conductive material 16 embedded, such as magnesium oxide. This insulating material 16 is preferably before the tubular heater 10 is fully assembled condensed.
- the heating wire coil 14 is at both ends 14a with a connecting element in Form of a connecting bolt 18 electrically and thermally connected.
- the Terminal bolt 18 has a first section 18a that leads to the filament 14 and the conically tapering in the direction of the filament 14 Tip is formed.
- the largest diameter of this first section 18a corresponds essentially to the inside diameter of the heating wire coil 14.
- the connecting bolt 14 also has a second section 18b, which is in the has a substantially cylindrical shape.
- the cylinder of the second section 18b can have an outer diameter that is larger than the inner diameter of the Heating wire coil 14, but is smaller than its outer diameter.
- the connecting pin 18 is made of sufficient or good heat-conducting material manufactured, such as copper. Basically, it can also be made from one less heat-conducting material, such as steel, as long as sufficient current conductivity is ensured.
- the first section 18a and for the most part the second section 18b of the connecting bolt 18 are almost completely surrounded by the insulating material 16.
- an insulating washer 20 made of a resin Around the penetration of moisture into the interior of the casing tube 12 to avoid the risk that the insulating material 16 its electrically insulating property to prevent, is in the area of the outside or from the filament 14 technological end of the second section 18a of the connecting bolt 18th an insulating washer 20 made of a resin.
- This insulating washer 20 closes the insulating material 16 moisture-proof from the outside.
- the insulating washer 20 can prefabricated pushed onto the connecting bolt 18 or during assembly of the tubular heater 10, preferably after compression in liquid form are poured in, then at the outwardly facing end of the Insulating material 16 cures.
- the pipe section 22 serves as a connection of the heating wire coil 14 to the heating circuit, which is not shown in FIG. 1.
- the pipe section 22 is for this electrically conductive connected to a terminal lug 24, which is at a right angle to the jacket tube axis at the free end of the jacket tube 12 outside of this End 12a arranged.
- the terminal lug 24 can be axially to the casing tube axis be aligned.
- the electrical connection between the pipe section 22 and the connecting lug 24 extends through a closure element 26 inserted into the casing tube end 12a in a level behind the displayed drawing level and is therefore not recognizable.
- the closure element 26 is made of heat-resistant plastic, Ceramic or porcelain and the like. Made and has a first portion 26a, which points in the direction of the heating wire coil 14 and the outside diameter of which Corresponds to the inner diameter of the casing tube 12. As is apparent from Fig. 1, is the first section 26a is pushed completely into the casing tube end 12a.
- the closure element 26 has a second, substantially cylindrical Section 26b, which points in the direction opposite the filament 14 and the can have an outer diameter that is larger than the outer diameter of the casing tube 12.
- a stop which serves to position the closure element 26.
- the in Direction of the filament 14 facing end of the first portion 26a of the Closure element 26 as a positioning stop with respect to the insulating disk 20 serve.
- the two sections 26a, 26b are separate from one another, so that the closure element 26 consists of two parts consists.
- the closure element 26 also has a continuous inner bore 26c, whose bore axis is substantially coaxial with the casing tube axis. In this Bore 26c, the pipe section 22 is arranged.
- closure element 26 is not only a prefabricated one Element as described above can be formed, but even after assembling the remaining parts of the tubular heater 10 in the Casing tube end 12a can be poured in liquid form, it then hardens there.
- the pipe section 22 is over the free end of the second section 18b of the connecting bolt 18 via.
- a security and monitoring element 28 inserted in this free end.
- the backup and Monitoring element 28 consists of a cylindrical sleeve 28a which sufficient or good heat-conducting material, for example copper, iron, steel is produced and their end pointing in the direction of the filament 14 is closed.
- the sleeve 28a of the security and monitoring element 28 has an outer diameter which corresponds to the inner diameter of the pipe section 22 and corresponds to the inner diameter of the bore 26c of the closure element 26.
- the securing and monitoring element 28 is so far into the pipe section 22 inserted that on the one hand a sufficiently large thermal contact area between the outer circumference of the security and monitoring element 28 and the Inner circumference of the pipe section 22 exists, but on the other hand, the securing and Monitoring element 28 is not in contact with the free end of the second Section 18b of the connecting bolt 18 arrives. In this context, too notice that by choosing the insertion depth of the security and monitoring element 28 the sensitivity to the filament temperature or the medium temperature can be controlled exactly.
- Pipe piece 22 may be provided with spring tongues, not shown, in the case a slotted sleeve as a tube piece 22, this sleeve can have an inner diameter have, which is slightly smaller than the outer diameter of the sleeve 28a of the Security and monitoring element 28 is so that the slotted sleeve resiliently applied to the sleeve 28a of the security and monitoring element 28.
- an NTC element 28b Inside the security and monitoring element 28 is an NTC element 28b arranged, which can also be a PTC element.
- the NTC element 28b is in one electrically insulating, but sufficiently thermally conductive mass 28c, for example a resin, embedded.
- the NTC element 28b is above the thermally conductive mass 28c, the thermally conductive sleeve 28a, the pipe section 22 and the connecting pin 18 is in thermal contact with the heating wire coil 14 however electrically insulated from the heating circuit.
- the NTC element 28b which is designed in the shape of a ball or a pill, and possibly already can be covered with an electrical insulation layer is over two separate connecting lines 28d with a fuse and not shown Monitoring or measuring circuit connected.
- the two connecting lines 28d are from the end facing the heating wire coil 14 from the sleeve 28a led out and with corresponding further elements of the security and Monitoring circuit connected.
- the fuse and monitoring circuit is formed separately from the heating circuit. It can be used as a resistance measuring circuit or be designed as a measuring circuit that detects the current drop or the change in voltage across the NTC element 28b due to its change in resistance measures.
- the sleeve 28a is slightly above the closure element 26 over and widened in diameter. This in turn becomes a Positioning stop created that when inserting the sleeve 28a in the Pipe piece 22 positioned their position. Basically, there is also Possibility that the sleeve 28a ends within the closure element 26 and only the connecting lines 28d are led out. The bore 26c can then be closed in a suitable manner.
- the operation of the security and monitoring element is as follows:
- the filament 14 In normal operation of the tubular heater 10, the filament 14 is over the Heating circuit current supplied so that it begins to glow.
- the of the Heating wire filament 14 heat generated here is on the insulating material 16 to the Sheath tube 12 and from there to the fluid to be heated, mostly water.
- There the securing and monitoring element 28 via the connecting bolts 18 and the pipe section 22 is connected to the filament 14 in a heat-conducting manner this also heats the NTC element 28b. Because of its material properties this changes its resistance value. This is from that Fuse and monitoring circuit detected.
- the calcification of the Display tubular heater 10 on the display device if available.
- calcification of the tubular heater 10 leads to its reduced cooling through the surrounding fluid and thus changes the temperature caused by the Security and monitoring element 28 is detected.
- This change expresses changes essentially due to a change in the initial or underlying value, but with the increase in temperature and thus the change in resistance of the NTC element 28b compared to the uncalcified state remains. If this change in the underlying is due to the above mentioned control device, can also by means of the already above mentioned control device this can be displayed to the user so that this appropriate measures, such as decalcification.
- FIG. 2 is a second exemplary embodiment of the tubular heater according to the invention 10 '.
- the security and monitoring element 28 Inside the cavity 18c the security and monitoring element 28 in the form of the NTC element 28b and the heat conductive mass 28c.
- the NTC element 28b is again via connecting lines 28d to the fuse and monitoring circuit connected.
- the rest of this tubular heater 10 'and its Operation correspond to that described in connection with FIG. 1 first embodiment.
Landscapes
- Resistance Heating (AREA)
- Thermistors And Varistors (AREA)
- Control Of Resistance Heating (AREA)
- Fuses (AREA)
Abstract
Description
- Fig. 1
- ein Teillängsschnitt im vergrößerten Maßstab durch ein Ende eines erfindungsgemäßen Rohrheizkörpers gemäß einer ersten Ausführungsform; und
- Fig. 2
- ein Teillängsschnitt im vergrößerten Maßstab durch ein Ende des erfindungsgemäßen Rohrheizkörpers gemäß einer zweiten Ausführungsform.
Claims (16)
- Rohrheizkörper zum Erhitzen von Fluiden, mit wenigstens einem Mantelrohr (12), mindestens einem Heizelement (14), das in einem elektrischen Isoliermaterial (16) eingebettet, im Inneren des Mantelrohres (12) angeordnet ist, Anschlußelemente (18), die in dem Ende (12a) des Mantelrohres (12) angeordnet sind und über die das Heizelement (14) mit einer Stromquelle verbunden ist, und mit mindestens einem Sicherungselement (28), das in dem Mantelrohrende (12a) angeordnet ist und in Wärmeleitungskontakt mit dem Heizelement (14) steht,
dadurch gekennzeichnet, daß das Sicherungselement (28) ein in Abhängigkeit der Temperatur des Heizelements (14) seinen Widerstand änderndes Element ist, das Bestandteil eines von dem Heizstromkreis unabhängigen Meßstromkreises ist, mittels dem die Widerstandsänderung des Sicherungselementes (28) erfaßbar ist. - Rohrheizkörper nach Anspruch 1,
dadurch gekennzeichnet, daß das Sicherungselement ein PTC-Element ist. - Rohrheizkörper nach Anspruch 1,
dadurch gekennzeichnet, daß das Sicherungselement ein NTC-Element (28) ist. - Rohrheizkörper nach einem der Ansprüche 1 bis 3,
dadurch gekennzeichnet, daß das Sicherungselement (28) über ein Rohrstück (22) mit dem Anschlußelement (18) in wärmeleitender, aber elektrisch isolierter Verbindung steht. - Rohrheizkörper nach Anspruch 4,
dadurch gekennzeichnet, daß das Anschlußelement ein Anschlußbolzen (18) ist, an dessen zu dem Mantelrohrende (12a) weisenden Ende (18b) das Rohrstück (22) aufgeschoben ist, in dessen ebenfalls zu dem Mantelrohrende (12a) weisenden Ende das Sicherungselement (28) eingeschoben ist. - Rohrheizkörper nach Anspruch 4 oder 5,
dadurch gekennzeichnet, daß das Sicherungselement (28) im Inneren einer Hülse (28a) elektrisch isoliert zu dem Mantel der Hülse (28a) aufgenommen ist. - Rohrheizkörper nach Anspruch 6,
dadurch gekennzeichnet, daß das Sicherungselement (28) in dem Inneren der Hülse (28a) in ein elektrisch isolierendes Material (28c) eingebettet ist. - Rohrheizkörper nach einem der Ansprüche 5 bis 7,
dadurch gekennzeichnet, daß der Mantel der Hülse (28a) aus ausreichend wärmeleitenden Material ist. - Rohrheizkörper nach einem der Ansprüche 5 bis 8,
dadurch gekennzeichnet, daß der Mantel der Hülse (28a) Teil des Anschlusses des Heizelements an die Heizstromquelle ist. - Rohrheizkörper nach einem der Ansprüche 1 bis 3,
dadurch gekennzeichnet, daß das Anschlußelement (18) in dem zu dem stirnseitigen Ende (12a) des Mantelrohres (12) weisenden Ende einen nach außen hin offenen Hohlraum (18c) aufweist, in dem das Sicherungselement (28) elektrisch isoliert zu dem Anschlußelement (18) untergebracht ist. - Rohrheizkörper nach Anspruch 10,
dadurch gekennzeichnet, daß das Sicherungselement (28) mittels elektrisch isolierenden, aber wärmeleitenden Harzverguß (28c) in dem Hohlraum (18c) des Anschlußelementes (18) untergebracht ist. - Rohrheizkörper nach Anspruch 10,
dadurch gekennzeichnet, daß das Sicherungselement (28) mittels einer elektrisch isolierenden, aber wärmeleitenden Hülse in dem Hohlraum (18c) des Anschlußelementes (18) untergebracht ist. - Rohrheizkörper nach einem der Ansprüche 1 bis 12,
dadurch gekennzeichnet, daß das Anschlußelement ein Anschlußbolzen (18) ist. - Rohrheizkörper nach einem der Ansprüche 1 bis 13,
dadurch gekennzeichnet, daß der Meßstromkreis ein Widerstandsmeßkreis ist. - Rohrheizkörper nach einem der Ansprüche 1 bis 13,
dadurch gekennzeichnet, daß der Meßstromkreis ein Meßkreis zum Messen des Stromabfalles ist. - Rohrheizkörper nach einem der Ansprüche 1 bis 13,
dadurch gekennzeichnet, daß der Meßstromkreis ein Meßkreis zum Messen der Spannungsänderung ist.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19941901 | 1999-09-02 | ||
DE19941901A DE19941901A1 (de) | 1999-09-02 | 1999-09-02 | Rohrheizkörper mit NTC/PTC-Absicherung |
Publications (3)
Publication Number | Publication Date |
---|---|
EP1081986A2 true EP1081986A2 (de) | 2001-03-07 |
EP1081986A3 EP1081986A3 (de) | 2002-05-29 |
EP1081986B1 EP1081986B1 (de) | 2004-09-01 |
Family
ID=7920589
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP00118875A Expired - Lifetime EP1081986B1 (de) | 1999-09-02 | 2000-08-31 | Rohrheizkörper mit NTC/PTC-Absicherung |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP1081986B1 (de) |
AT (1) | ATE275319T1 (de) |
DE (2) | DE19941901A1 (de) |
ES (1) | ES2226677T3 (de) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1655546A1 (de) * | 2003-12-09 | 2006-05-10 | BORELLI Luigi | Wärmegruppe für ein diathermisches Flüssigkeitsstrahlungselement |
WO2006108622A1 (en) * | 2005-04-15 | 2006-10-19 | I.R.C.A. S.P.A. Industria Resistenze Corazzate E Affini | Armoured electrical resistance element |
WO2007034343A1 (en) | 2005-09-19 | 2007-03-29 | Koninklijke Philips Electronics N.V. | Device for making a beverage, provided with a water boiler |
CN105352186A (zh) * | 2015-10-09 | 2016-02-24 | 芜湖恒美电热器具有限公司 | 一种加热器以及制造加热器的通电干烧搪瓷工艺 |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19937492C2 (de) | 1999-08-07 | 2001-08-23 | Mfh Hyperthermiesysteme Gmbh | Magnetfeldapplikator zur Aufheizung von magnetischen oder magnetisierbaren Substanzen oder Festkörpern in biologischem Gewebe |
DE10118922C1 (de) | 2001-04-18 | 2003-04-30 | Martin Hess | Verfahren zur Sicherung und Regelung einer elektrischen, explosionsgeschützten Heizung und Vorrichtung zur Durchführung des Verfahrens |
DE102014221497A1 (de) | 2014-10-23 | 2016-04-28 | Sandvik Materials Technology Deutschland Gmbh | Vorrichtung und Verfahren zum Kühlen eines Fluids |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE8423034U1 (de) * | 1984-08-02 | 1985-01-03 | Elpag Ag Chur, Chur | Rohrheizkoerper |
EP0456216A2 (de) * | 1990-05-08 | 1991-11-13 | Elpag Ag Chur | Rohrheizkörper mit Sicherung |
EP0660644A2 (de) * | 1993-12-23 | 1995-06-28 | Elpag Ag Chur | Rohrheizkörper mit Überlastsicherung und Temperaturfühler |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3843127C2 (de) * | 1988-12-22 | 1995-04-20 | Eltra Gmbh & Co Kg Leicht & Tr | Heizkörper |
-
1999
- 1999-09-02 DE DE19941901A patent/DE19941901A1/de not_active Ceased
-
2000
- 2000-08-31 AT AT00118875T patent/ATE275319T1/de not_active IP Right Cessation
- 2000-08-31 DE DE50007598T patent/DE50007598D1/de not_active Expired - Lifetime
- 2000-08-31 ES ES00118875T patent/ES2226677T3/es not_active Expired - Lifetime
- 2000-08-31 EP EP00118875A patent/EP1081986B1/de not_active Expired - Lifetime
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE8423034U1 (de) * | 1984-08-02 | 1985-01-03 | Elpag Ag Chur, Chur | Rohrheizkoerper |
EP0456216A2 (de) * | 1990-05-08 | 1991-11-13 | Elpag Ag Chur | Rohrheizkörper mit Sicherung |
EP0660644A2 (de) * | 1993-12-23 | 1995-06-28 | Elpag Ag Chur | Rohrheizkörper mit Überlastsicherung und Temperaturfühler |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1655546A1 (de) * | 2003-12-09 | 2006-05-10 | BORELLI Luigi | Wärmegruppe für ein diathermisches Flüssigkeitsstrahlungselement |
WO2006108622A1 (en) * | 2005-04-15 | 2006-10-19 | I.R.C.A. S.P.A. Industria Resistenze Corazzate E Affini | Armoured electrical resistance element |
WO2007034343A1 (en) | 2005-09-19 | 2007-03-29 | Koninklijke Philips Electronics N.V. | Device for making a beverage, provided with a water boiler |
US8094998B2 (en) | 2005-09-19 | 2012-01-10 | Koninklijke Philips Electronics N.V. | Device for making a beverage, provided with a water boiler |
CN105352186A (zh) * | 2015-10-09 | 2016-02-24 | 芜湖恒美电热器具有限公司 | 一种加热器以及制造加热器的通电干烧搪瓷工艺 |
Also Published As
Publication number | Publication date |
---|---|
DE19941901A1 (de) | 2001-03-29 |
EP1081986A3 (de) | 2002-05-29 |
EP1081986B1 (de) | 2004-09-01 |
ATE275319T1 (de) | 2004-09-15 |
ES2226677T3 (es) | 2005-04-01 |
DE50007598D1 (de) | 2004-10-07 |
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