DE1111749B - Electrically heated water heater - Google Patents

Electrically heated water heater

Info

Publication number
DE1111749B
DE1111749B DEL33928A DEL0033928A DE1111749B DE 1111749 B DE1111749 B DE 1111749B DE L33928 A DEL33928 A DE L33928A DE L0033928 A DEL0033928 A DE L0033928A DE 1111749 B DE1111749 B DE 1111749B
Authority
DE
Germany
Prior art keywords
heating conductor
water
water heater
electrically heated
occurs
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.)
Pending
Application number
DEL33928A
Other languages
German (de)
Inventor
Dr-Ing Herbert Dallmann
Helmut Schoenberger
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Licentia Patent Verwaltungs GmbH
Original Assignee
Licentia Patent Verwaltungs GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Licentia Patent Verwaltungs GmbH filed Critical Licentia Patent Verwaltungs GmbH
Priority to DEL33928A priority Critical patent/DE1111749B/en
Publication of DE1111749B publication Critical patent/DE1111749B/en
Pending legal-status Critical Current

Links

Classifications

    • 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
    • F24H1/00—Water heaters, e.g. boilers, continuous-flow heaters or water-storage heaters
    • F24H1/10—Continuous-flow heaters, i.e. heaters in which heat is generated only while the water is flowing, e.g. with direct contact of the water with the heating medium
    • F24H1/101—Continuous-flow heaters, i.e. heaters in which heat is generated only while the water is flowing, e.g. with direct contact of the water with the heating medium using electric energy supply
    • F24H1/102—Continuous-flow heaters, i.e. heaters in which heat is generated only while the water is flowing, e.g. with direct contact of the water with the heating medium using electric energy supply with resistance
    • F24H1/103—Continuous-flow heaters, i.e. heaters in which heat is generated only while the water is flowing, e.g. with direct contact of the water with the heating medium using electric energy supply with resistance with bare resistances in direct contact with the fluid

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Resistance Heating (AREA)

Description

Elektrisch beheizter Durchlauferhitzer Die vorliegende Erfindung bezieht sich auf einen elektrisch beheizten Durchlauferhitzer, dessen Heizkörper urisoliert im Wasser liegen.Electrically heated water heater The present invention relates relies on an electrically heated instantaneous water heater, the heating element of which is fully insulated lying in the water.

Bekanntlich tritt bei allen Warmwasserbereitern ab etwa 60° C eine erhöhte Verkalkungsgefahr insbesondere für die Heizkörper auf. Dies tritt, wie Versuche gezeigt haben, bei Durchlauferhitzern, bei denen das Wasser in einem verhältnismäßig engen Kanal am urisolierten Heizleiter entlangfließt, besonders an den Stellen des Heizkörpers auf, an denen das vorbeiströmende Wasser bereits etwa 60° C erreicht hat. Es sind also die dem Auslauf des Wasserkanals zugewandten Enden des Heizleiters der Verkalkungsgefahr in höherem Maße ausgesetzt als die dem Wasserzulauf zugewandten Enden.As is well known, one occurs with all water heaters from around 60 ° C increased risk of calcification, especially for the radiators. This occurs like attempts have shown in water heaters, in which the water in a proportionate narrow channel along the insulated heating conductor, especially at the points of the Radiators on which the water flowing past has already reached around 60 ° C Has. It is therefore the ends of the heating conductor facing the outlet of the water channel exposed to the risk of calcification to a greater extent than those facing the water inlet End up.

Die vorliegende Erfindung ist nun dadurch gekennzeichnet, daß der Heizleiter ab derjenigen Stelle, an der eine hohe, etwa oberhalb 55° C liegende Wassertemperatur auftritt, eine kleinere Belastung je Längeneinheit und/oder eine kleinere Belastung je Oberflächeneinheit aufweist als die übrigen Stellen des Heizleiters.The present invention is now characterized in that the Heating conductor from the point at which a high, approximately above 55 ° C Water temperature occurs, a smaller load per unit of length and / or a has less load per surface unit than the other places on the heating conductor.

Weitere vorteilhafte Einzelheiten der Erfindung sind nachstehend an Hand des in der Zeichnung veranschaulichten Ausführungsbeispieles beschrieben.Further advantageous details of the invention are set out below Hand of the embodiment illustrated in the drawing described.

Mit 1 ist die Wasserzulaufseite, mit 2 die Wasserablaufseite eines elektrisch isolierenden Wasserkanals 3 bezeichnet. In diesem liegt ein urisolierter, gewendelter Heizleiter 4.1 is the water inlet side, and 2 is the water outlet side electrically insulating water channel 3 designated. In this lies a primordial, coiled heating conductor 4.

Bei Wasserdurchfluß und eingeschaltetem Heizleiter 4 wird das Wasser von Anfangstemperatur, z. B. 20° C, bis zum Ende des Heizleiters 4 auf Endtemperatur, z. B. 80° C, gebracht. Ab einer bestimmten Stelle des Heizleiters 4, beispielsweise von der mit 5 bezeichneten Stelle ab, besitzt das Wasser eine Temperatur von 60° C. Von hier an besitzt nun die Wendel des Heizleiters 4 einen größeren Windungsabstand, wodurch dessen Belastung je Längeneinheit von hier an kleiner ist. Damit verringert sich die Heizleitertemperatur, so daß jetzt keine so großen Kalkablagerungen mehr auftreten können. Vorteilhaft wird der Windungsabstand zum Wasserablauf hin kontinuierlich oder stufenweise immer größer; er nimmt also, je mehr die Erwärmung des Wassers zunimmt, mehr und mehr zu.When water flows through and the heating element 4 is switched on, the water of initial temperature, e.g. B. 20 ° C, up to the end of the heatsealing band 4 at the end temperature, z. B. 80 ° C, brought. From a certain point on the heating conductor 4, for example from the point marked 5, the water has a temperature of 60 ° C. From here on, the helix of the heating conductor 4 has a greater distance between the windings, whereby its load per unit length is smaller from here on. So reduced the heating conductor temperature so that there are no more limescale deposits may occur. The winding spacing is advantageously continuous towards the water outlet or gradually getting bigger; so he takes the more the warming of the water increases, more and more.

An Stelle eines größeren Windungsabstandes oder auch zusätzlich dazu kann erfindungsgemäß die Oberfläche des Heizleiters in dem gefährdeten Abschnitt vergrößert werden. Hierdurch nimmt die Oberflächenbelastung und damit die Oberflächentemperatur ebenfalls ab. Die Folge davon ist eine Verringerung der Verkalkungsgefahr des Heizleiters in dem besonders gefährdeten Bereich.Instead of a larger winding distance or in addition to it can, according to the invention, the surface of the heating conductor in the endangered section be enlarged. This increases the surface load and thus the surface temperature also from. The consequence of this is a reduction in the risk of calcification of the heating conductor in the particularly endangered area.

Die Vergrößerung der Oberfläche und damit die Verkleinerung der Oberflächenbelastung kann entweder durch einen größeren Heizleiterdurchmesser oder z. B. durch Flachpressen des Heizleiters oder durch eine Kombination der genannten Möglichkeiten erzielt werden.The enlargement of the surface and thus the reduction of the surface load can either by a larger heating conductor diameter or z. B. by flat pressing of the heating conductor or a combination of the options mentioned will.

Claims (3)

PATENTANSPRÜCHE: 1. Elektrisch beheizter Durchlauferhitzer, dessen Heizleiter sich urisoliert im einen verhältnismäßig engen Kanal durchströmenden Wasser erstreckt, dadurch gekennzeichnet, daß der Heizleiter (4) ab derjenigen Stelle, an der eine hohe, etwa oberhalb 55° C liegende Wassertemperatur auftritt, eine kleinere Belastung je Längeneinheit und/oder eine kleinere Belastung je Oberflächeneinheit aufweist als die übrigen Stellen des Heizleiters. PATENT CLAIMS: 1. Electrically heated water heater, the heating conductor of which extends uninsulated in the water flowing through a relatively narrow channel, characterized in that the heating conductor (4) is smaller from the point at which a high water temperature, approximately above 55 ° C, occurs Load per unit of length and / or a smaller load per unit of surface area than the other points of the heating conductor. 2. Durchlauferhitzer nach Anspruch 1, dessen Heizleiter gewendelt ist, dadurch gekennzeichnet, daß der Windungsabstand des gewendelten Heizleiters ab derjenigen Stelle, an der eine hohe, etwa oberhalb 55° C liegende Wassertemperatur auftritt, kontinuierlich zunimmt oder stufenweise vergrößert ist. 2. Water heater according to claim 1, the heating conductor of which is coiled, characterized in that the winding spacing of the coiled heating conductor from the point at which a high, approximately above 55 ° C occurs, increases continuously or in stages is enlarged. 3. Durchlauferhitzer nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß der Durchmesser des Heizleiters (4) ab derjenigen Stelle, an der eine hohe, etwa oberhalb 55° C liegende Wassertemperatur auftritt, kontinuierlich zunimmt oder stufenweise vergrößert ist.3. Water heater according to claim 1 or 2, characterized in that that the diameter of the heating conductor (4) from the point at which a high, water temperature above 55 ° C occurs, increases continuously or is gradually enlarged.
DEL33928A 1959-08-10 1959-08-10 Electrically heated water heater Pending DE1111749B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEL33928A DE1111749B (en) 1959-08-10 1959-08-10 Electrically heated water heater

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEL33928A DE1111749B (en) 1959-08-10 1959-08-10 Electrically heated water heater

Publications (1)

Publication Number Publication Date
DE1111749B true DE1111749B (en) 1961-07-27

Family

ID=7266486

Family Applications (1)

Application Number Title Priority Date Filing Date
DEL33928A Pending DE1111749B (en) 1959-08-10 1959-08-10 Electrically heated water heater

Country Status (1)

Country Link
DE (1) DE1111749B (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2833663A1 (en) * 1978-08-01 1980-02-21 Walter Wiegand Electric heater cartridges for plasticising thermoplastics - have gauge and length of heating wire coils adjusted so that glowing temp. is attained
DE3026545A1 (en) * 1980-07-12 1982-02-04 E.G.O. Elektro-Geräte Blanc u. Fischer, 7519 Oberderdingen ELECTRICALLY OPERATED HOUSEHOLD APPLIANCE
US4395618A (en) * 1980-03-03 1983-07-26 Emerson Electric Co. Electric circulation heater for heating fluids such as oil
DE3347160A1 (en) * 1983-12-27 1985-08-29 Türk & Hillinger GmbH, 7200 Tuttlingen ELECTRIC HEATING DEVICE FOR PLASTIC INJECTION NOZZLES
DE19732414A1 (en) * 1997-07-30 1999-02-04 Suhl Elektro & Hausgeraetewerk Throughflow heater for heating liquids e.g. water
DE19616766C2 (en) * 1996-04-26 2002-03-14 Stiebel Eltron Gmbh & Co Kg Electric instantaneous water heater

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2833663A1 (en) * 1978-08-01 1980-02-21 Walter Wiegand Electric heater cartridges for plasticising thermoplastics - have gauge and length of heating wire coils adjusted so that glowing temp. is attained
US4395618A (en) * 1980-03-03 1983-07-26 Emerson Electric Co. Electric circulation heater for heating fluids such as oil
DE3026545A1 (en) * 1980-07-12 1982-02-04 E.G.O. Elektro-Geräte Blanc u. Fischer, 7519 Oberderdingen ELECTRICALLY OPERATED HOUSEHOLD APPLIANCE
DE3347160A1 (en) * 1983-12-27 1985-08-29 Türk & Hillinger GmbH, 7200 Tuttlingen ELECTRIC HEATING DEVICE FOR PLASTIC INJECTION NOZZLES
DE19616766C2 (en) * 1996-04-26 2002-03-14 Stiebel Eltron Gmbh & Co Kg Electric instantaneous water heater
DE19732414A1 (en) * 1997-07-30 1999-02-04 Suhl Elektro & Hausgeraetewerk Throughflow heater for heating liquids e.g. water

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