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DE3720927C1 - Electrically heated continuous-flow heater for washing machines or dishwashers - Google Patents

Electrically heated continuous-flow heater for washing machines or dishwashers

Info

Publication number
DE3720927C1
DE3720927C1 DE3720927A DE3720927A DE3720927C1 DE 3720927 C1 DE3720927 C1 DE 3720927C1 DE 3720927 A DE3720927 A DE 3720927A DE 3720927 A DE3720927 A DE 3720927A DE 3720927 C1 DE3720927 C1 DE 3720927C1
Authority
DE
Germany
Prior art keywords
dishwashers
washing machines
flow heater
outside
thermal insulation
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.)
Expired
Application number
DE3720927A
Other languages
German (de)
Inventor
Heinz Kaefferlein
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 DE3720927A priority Critical patent/DE3720927C1/en
Priority to FR888807702A priority patent/FR2617362B3/en
Priority to IT8821408U priority patent/IT213966Z2/en
Application granted granted Critical
Publication of DE3720927C1 publication Critical patent/DE3720927C1/en
Expired legal-status Critical Current

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
    • H05B3/40—Heating elements having the shape of rods or tubes
    • H05B3/54—Heating elements having the shape of rods or tubes flexible
    • H05B3/58—Heating hoses; Heating collars
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L15/00—Washing or rinsing machines for crockery or tableware
    • A47L15/42—Details
    • A47L15/4285—Water-heater arrangements
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F39/00—Details of washing machines not specific to a single type of machines covered by groups D06F9/00 - D06F27/00 
    • D06F39/04—Heating arrangements
    • 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
    • F24H1/12—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 in which the water is kept separate from the heating medium
    • F24H1/121—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 in which the water is kept separate from the heating medium using electric energy supply

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (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)
  • Instantaneous Water Boilers, Portable Hot-Water Supply Apparatuses, And Control Of Portable Hot-Water Supply Apparatuses (AREA)

Abstract

Considerable heat losses through lateral emission occur in a continuous-flow heater with an electrical jacket barrel heating element mounted on the outside of a metal pipe through which the liquid to be heated flows only on the inside. In order to prevent such heat losses, the jacket barrel heating element (2) is surrounded by a thermal insulation (3) which shields the heating element from the outside and which is designed as moulding or formed from two half shells. Continuous-flow heater for use in washing machines and dishwashers. <IMAGE>

Description

Die Erfindung betrifft einen elektrisch beheizten Durchlauferhitzer für Wasch- oder Geschirrspülmaschinen nach dem Oberbegriff des Patentanspruchs 1.The invention relates to an electrically heated water heater for Washing machines or dishwashers according to the generic term of Claim 1.

Aus dem DE-GM 19 41 391 ist ein beheiztes, flexibles Leitungsrohr aus Metall bekannt, bei dem der elektrische Heizleiter schraubenförmig um das Leitungsrohr gelegt und nach außen hin durch einen thermischen Isolationsmantel abgedeckt ist. Aufgrund der flexiblen Ausbildung des Leitungsrohres muß hier der thermische Isolationsmantel ebenfalls eine gewisse Flexibilität aufweisen, wodurch die Herstellung und Anbringung des thermischen Isolationsmantels einen erheblichen technischen Fertigungsaufwand erfordert.DE-GM 19 41 391 is a heated, flexible conduit Metal known in which the electrical heating conductor is helical placed the conduit and outward through a thermal Insulation jacket is covered. Due to the flexible training of the Pipe, the thermal insulation jacket must also be one have some flexibility, which makes the manufacture and attachment the thermal insulation jacket a considerable technical Manufacturing effort required.

Die DE-OS 30 33 583 zeigt einen Flüssigkeitserhitzer, der aus einem von der zu erhitzenden Flüssigkeit durchströmten Durchflußrohr und einem im Leitungsrohr angeordneten elektrischen Heizkörper besteht. Zur Wärmeisolierung ist das Durchflußrohr mit einer Schicht aus Isoliermaterial überzogen.DE-OS 30 33 583 shows a liquid heater which consists of one of of the liquid to be heated flow tube and a in Line pipe arranged electric radiator exists. To Thermal insulation is the flow tube with a layer of Insulated material covered.

Ausgehend von diesem Stand der Technik liegt der Erfindung die Aufgabe zugrunde, einen energiesparenden Durchlauferhitzer speziell für den Einsatz in Wasch- und Geschirrspülmaschinen zu schaffen, dessen thermische Isolation preiswert herstellbar ist und die sich ohne großen Fertigungsaufwand leicht auf das schraubenförmig vom elektrischen Mantelrohrheizkörper umgebene metallene Durchflußrohr auf- bzw. anbringen läßt.Based on this prior art, the object of the invention based on an energy-saving instantaneous water heater especially for the  To create use in washing machines and dishwashers Thermal insulation is inexpensive to manufacture and which can be done without major Manufacturing effort easily on the helical from the electrical Casing tubular heating element surrounding metal flow tube can be attached.

Die Lösung dieser Aufgabe gemäß der Erfindung ist dem kennzeichnenden Teil des Patentanspruchs 1 zu entnehmen. Vorteilhafte weitere Ausgestaltungen des Gegenstandes der Erfindung sind in den Unteransprüchen angegeben.The solution to this problem according to the invention is the characteristic Part of claim 1 can be seen. Advantageous further developments of the subject matter of the invention are specified in the subclaims.

Die als Formteil ausgebildete thermische Isolation für das von außen beheizte Durchflußrohr läßt sich ohne speziellen Montageaufwand aufschieben bzw. darüberlegen. Damit wird ein Durchlauferhitzerkörper geschaffen, der für den genannten Einsatz als Massenartikel preiswert herstellbar ist. Durch die den beheizten Durchlaufrohrkörper nach außen hin abdeckende thermische Isolation sind benachbarte Kunststoffteile, wie sie heute bei Wasch- und Geschirrspülmaschinen vielfach zum Einsatz kommen, vor schädlicher Wärmebelastung ohne großen Aufwand zuverlässig geschützt.The thermal insulation designed as a molded part for the outside heated flow tube can be installed without special assembly effort postpone or lay over. This becomes a continuous-flow heater body created that inexpensive for the use mentioned as a mass article can be produced. Through the heated flow tube body to the outside covering thermal insulation are neighboring plastic parts, as they are often used today in washing machines and dishwashers come reliably against harmful heat load without much effort protected.

Ein Ausführungsbeispiel der Erfindung ist in der Zeichnung dargestellt und wird anhand dieser nachfolgend näher beschrieben. Es zeigtAn embodiment of the invention is shown in the drawing and is described in more detail below based on this. It shows

Fig. 1 einen Durchlauferhitzerkörper im Querschnitt, Fig. 1 shows a water heater body in cross-section,

Fig. 2 diesen Durchlauferhitzerkörper im Längsschnitt. Fig. 2 this flow heater body in longitudinal section.

Der Durchlauferhitzer nach der Zeichnung besteht aus einem von der zu erhitzenden Flüssigkeit durchströmten metallenen Durchflußrohr 1, um dessen Außenwandung ein schraubenförmig gewundener elektrischer Mantelrohrheizkörper 2 gelegt und dort gut wärmeleitend in an sich bekannter Weise befestigt ist. Der auf der Durchflußrohr-Außenwandung 1′ aufgebrachte Mantelrohrheizkörper 2 ist nach außen hin von einer thermischen Isolation 3 aus vorzugsweise nicht brennbarem Material überdeckt, die als einstückiges Formteil ausgebildet oder aus zwei Halbschalen 4, 4′ gebildet ist. Eine solche Isolation läßt sich preiswert herstellen und ohne großen Fertigungsaufwand anbringen. Bei Verwendung einer aus zwei Halbschalen bestehenden Isolation können diese so ausgebildet sein, daß sie durch eine angeformte Verrastung miteinander in Eingriff gehalten sind.The instantaneous heater according to the drawing consists of a metal flow tube 1 through which the liquid to be heated flows, around the outer wall of which a helically wound electrical jacket tube heating element 2 is placed and fastened there in a manner known per se with good heat conductivity. The on the flow tube outer wall 1 ' applied jacket tube heater 2 is covered to the outside by a thermal insulation 3 made of preferably non-combustible material, which is formed as a one-piece molding or formed from two half-shells 4, 4' . Such insulation can be produced inexpensively and attached without great manufacturing effort. When using an insulation consisting of two half-shells, these can be designed in such a way that they are held in engagement with one another by means of an integrally formed catch.

Die beiden Halbschalen 4, 4′ können auch mittels einer Haftverbindung an ihren Stoßkanten 5 oder durch Bandagen bzw. umgreifende Spannbänder oder dergleichen zusammengehalten werden. Die thermische Isolation 3 kann ferner so ausgeführt sein, daß der freie Wandungsteil des auf dem Durchflußrohr 1 aufgebrachten Mantelrohrheizkörpers 2 in der thermischen Isolation 3′ eingebettet oder daß die thermische Isolation 3 auf dem Mantelrohrheizkörper 2 satt aufgesetzt ist.The two half-shells 4, 4 ' can also be held together by means of an adhesive connection on their abutting edges 5 or by bandages or encompassing straps or the like. The thermal insulation 3 can also be carried out so that the free wall part of the jacket tube heating element 2 applied to the flow tube 1 is embedded in the thermal insulation 3 ' or that the thermal insulation 3 is fitted snugly on the jacket tube heating element 2 .

Claims (3)

1. Elektrisch beheizter Durchlauferhitzer für Wasch- und Geschirrspülmaschinen, bei dem ein schraubenförmig gewundener Mantelrohrheizkörper gut wärmeleitend auf der Außenseite eines lediglich innen von der zu erhitzenden Flüssigkeit durchströmten metallenen Durchflußrohres angeordnet und durch eine nach außen hin abschirmende thermische Isolation abgedeckt ist, dadurch gekennzeichnet, daß die Isolation (3) als einstückiges oder aus zwei Halbschalen (4, 4′) bestehendes Formteil ausgebildet ist.1. Electrically heated instantaneous water heater for washing machines and dishwashers, in which a helically wound jacket tube radiator is arranged with good heat conduction on the outside of a metal flow tube that is only flowed through internally by the liquid to be heated and is covered by thermal insulation shielding from the outside, characterized in that the insulation ( 3 ) is formed as a one-piece or from two half-shells ( 4, 4 ' ) formed part. 2. Durchlauferhitzer nach Anspruch 1, dadurch gekennzeichnet, daß die beiden Halbschalen (4, 4′) durch eine angeformte Verrastung miteinander in Eingriff oder mittels einer Haftverbindung an den Stoßkanten (5) oder durch Bandagen bzw. Spannbänder oder dergleichen zusammengehalten sind.2. instantaneous water heater according to claim 1, characterized in that the two half-shells ( 4, 4 ' ) are engaged with each other by an integrally formed latching or by means of an adhesive connection on the abutting edges ( 5 ) or by bandages or straps or the like. 3. Durchlauferhitzer nach Anspruch 1, dadurch gekennzeichnet, daß die Isolation (3′′) auf dem Mantelrohrheizkörper (2) satt aufgesetzt ist.3. instantaneous water heater according to claim 1, characterized in that the insulation ( 3 '' ) on the tubular casing heater ( 2 ) is snugly placed.
DE3720927A 1987-06-25 1987-06-25 Electrically heated continuous-flow heater for washing machines or dishwashers Expired DE3720927C1 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
DE3720927A DE3720927C1 (en) 1987-06-25 1987-06-25 Electrically heated continuous-flow heater for washing machines or dishwashers
FR888807702A FR2617362B3 (en) 1987-06-25 1988-06-09 INSTANTANEOUSLY ELECTRICALLY HEATED HEATING DEVICE FOR WASHING MACHINE AND DISHWASHER
IT8821408U IT213966Z2 (en) 1987-06-25 1988-06-10 ELECTRICALLY FOR WASHING MACHINES AND HEATED PASS DISHWASHER DISHWASHER.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE3720927A DE3720927C1 (en) 1987-06-25 1987-06-25 Electrically heated continuous-flow heater for washing machines or dishwashers

Publications (1)

Publication Number Publication Date
DE3720927C1 true DE3720927C1 (en) 1988-12-01

Family

ID=6330228

Family Applications (1)

Application Number Title Priority Date Filing Date
DE3720927A Expired DE3720927C1 (en) 1987-06-25 1987-06-25 Electrically heated continuous-flow heater for washing machines or dishwashers

Country Status (3)

Country Link
DE (1) DE3720927C1 (en)
FR (1) FR2617362B3 (en)
IT (1) IT213966Z2 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1006320A3 (en) * 1998-12-04 2002-09-11 SiCeram GmbH Electral instantaneous heater and method for making same
DE102007001265A1 (en) * 2007-01-08 2008-07-10 Pavao Paukovic Electrical heater for flowing through liquids or gases, is coil shaped and is wounded around pipe line, which is made from material of high thermal efficiency

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1941391A1 (en) * 1968-08-22 1970-02-26 Permutit Co Ltd Ion exchange process
DE3033583C2 (en) * 1980-09-06 1985-01-10 Ernst Dipl.-Ing. Küsnacht Czepek Arrangement for heating liquids

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1941391A1 (en) * 1968-08-22 1970-02-26 Permutit Co Ltd Ion exchange process
DE3033583C2 (en) * 1980-09-06 1985-01-10 Ernst Dipl.-Ing. Küsnacht Czepek Arrangement for heating liquids

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1006320A3 (en) * 1998-12-04 2002-09-11 SiCeram GmbH Electral instantaneous heater and method for making same
DE102007001265A1 (en) * 2007-01-08 2008-07-10 Pavao Paukovic Electrical heater for flowing through liquids or gases, is coil shaped and is wounded around pipe line, which is made from material of high thermal efficiency

Also Published As

Publication number Publication date
FR2617362B3 (en) 1989-07-07
IT213966Z2 (en) 1990-03-05
IT8821408V0 (en) 1988-06-10
FR2617362A3 (en) 1988-12-30

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Legal Events

Date Code Title Description
8100 Publication of the examined application without publication of unexamined application
D1 Grant (no unexamined application published) patent law 81
8363 Opposition against the patent
8331 Complete revocation