EP0711962B1 - Electric storage heating apparatus - Google Patents

Electric storage heating apparatus Download PDF

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Publication number
EP0711962B1
EP0711962B1 EP95115377A EP95115377A EP0711962B1 EP 0711962 B1 EP0711962 B1 EP 0711962B1 EP 95115377 A EP95115377 A EP 95115377A EP 95115377 A EP95115377 A EP 95115377A EP 0711962 B1 EP0711962 B1 EP 0711962B1
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EP
European Patent Office
Prior art keywords
heat exchanger
storage
core
storage core
heat
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EP95115377A
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German (de)
French (fr)
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EP0711962A1 (en
Inventor
Tobias Bergmann
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Kkw Kulmbacher Klimagerate-Werk GmbH
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Kkw Kulmbacher Klimagerate-Werk GmbH
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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
    • F24H7/00—Storage heaters, i.e. heaters in which the energy is stored as heat in masses for subsequent release
    • F24H7/02—Storage heaters, i.e. heaters in which the energy is stored as heat in masses for subsequent release the released heat being conveyed to a transfer fluid
    • F24H7/04—Storage heaters, i.e. heaters in which the energy is stored as heat in masses for subsequent release the released heat being conveyed to a transfer fluid with forced circulation of the transfer fluid
    • F24H7/0408—Storage heaters, i.e. heaters in which the energy is stored as heat in masses for subsequent release the released heat being conveyed to a transfer fluid with forced circulation of the transfer fluid using electrical energy supply
    • F24H7/0416—Storage heaters, i.e. heaters in which the energy is stored as heat in masses for subsequent release the released heat being conveyed to a transfer fluid with forced circulation of the transfer fluid using electrical energy supply the transfer fluid being air

Definitions

  • the invention relates to an electric storage heater a memory core, electric radiators for heating the Storage core, at least one flow channel, a blower, which causes an air flow to discharge the memory core which promotes at least one flow channel, and one Storage core, the flow channel and the fan receiving Device housing that with inlet and outlet openings for the flow channel is provided.
  • a blower which causes an air flow to discharge the memory core which promotes at least one flow channel, and one Storage core, the flow channel and the fan receiving Device housing that with inlet and outlet openings for the flow channel is provided.
  • this is the flow channel in the Usually deflected several times through the memory core.
  • the air carried by the blower through the flow channel the heat immediately from that delimiting the flow channel Storage core medium occurs and enters from the outlet openings the room to be heated.
  • the training and the course as well as the skillful demarcation of the flow channel Prerequisite for the most uniform possible discharge of the Storage core and thus for an acceptable efficiency of the Storage heater.
  • the invention has for its object a uniform and reliable discharge of the entire memory core and to achieve with relatively little structural effort.
  • the heat can Storage core withdrawn evenly and to the heat exchanger are transmitted from where they are comparatively concentrated area, namely in the area of the air flow exposed heat exchanger surface, in the room to be heated can be dissipated. This allows the flow channel shorten it considerably and structure it accordingly.
  • the coupling agent can be even distributed over the memory core and with its medium inside Be brought in contact. Such coupling means can the heat is similarly light, even from critical corner areas be dissipated like from the middle of a block-shaped Memory core.
  • the memory core itself can just like that Device housing are extremely compact, and the Thermal insulation surrounding the storage core can be according to the thermal Insulation properties can be selected and designed.
  • the degree of coupling between the storage core and the heat exchanger controllable For this purpose, at least one Heat exchanger surface changeable, for example in Device housing can be slidably and / or pivotally arranged. Due to the possibility to change the degree of coupling between Storage core and heat exchanger can be on the otherwise usual continuous or non-continuous fan speed control is dispensed with become. This increases user comfort accordingly, because the discharge can be done at very low Fan speeds without disturbing switching noises relatively accurate by simply changing the degree of coupling or the position of the Regulate the heat exchanger.
  • For changing the position of the at least one heat exchanger surface Serves an actuator that is dependent on a controller from a control deviation, in particular from one Temperature deviation is controlled.
  • Heat exchanger surfaces may interfere with the operation of the fan waived and a convection current over the Heat exchanger surfaces are conducted, which is similar to one static storage heater that dissipates heat from the device and a substantial part of the discharge of the memory core causes.
  • Convection currents conducted through heat exchanger surfaces of the blower and still extends all areas of the Memory core are discharged evenly.
  • the Heat exchanger on a holder made of a material with a high thermal expansion coefficient arranged so that the degree of coupling between the storage core and the heat exchanger varies depending on the temperature of the bracket is.
  • a heat exchanger only on one side, for example below or arranged above the memory core.
  • At least one layer of flexible Have heat transfer material in a border zone between the storage core and the heat exchanger, for example at the Bottom of the memory core is arranged.
  • flexible A mat is particularly suitable for heat transfer material Metal wool.
  • the storage core on the heat exchanger is thereby allows the memory core through box or cassette-like metal container is formed with a Melted salt or salt mixture are filled.
  • the molten salt or salt mixture has excellent heat storage properties.
  • the molten salt and salt mixture nestles relatively homogeneously and intimately on the heat-dissipating metal container walls, so that at their ends and transfer points to the heat exchanger and to the subsequent ones parallel to the heat exchanger Container walls provided a high heat potential becomes.
  • Embodiment of the new electric storage heater encloses a device housing with thermal insulation a receiving chamber for a memory core 2.
  • the Storage core are electric radiators 3 for heating the Storage core arranged in an even distribution.
  • the Memory core 2 is a more compact, essentially closed Block trained. Part of the memory core has broken away shown so that a series of housing openings 4th becomes visible through the convection currents from the Housing interior into the room to be heated to the outside emerge and for a certain static discharge of the Storage core can worry.
  • a relatively wide flow channel 5 extends from an inlet panel 6 provided with inlet openings starting from a bottom housing chamber to one arranged on the opposite side of the housing Outlet opening 7. Behind the inlet panel 6 is in Flow channel 5, a blower 8 arranged, the air flow from the inlet side through the flow channel 5 to Exit opening 7 promotes to discharge the memory core.
  • the flow channel 5 is located on the storage core 2 facing side by one described in Embodiment designed as a finned tube heat exchanger Heat exchanger 10 limited.
  • the heat exchanger 10 is on his the inlet panel 6 adjacent end via a pivot bearing 11 supported and can not with the help of one in the drawing shown swivel drive in different swivel positions to be brought.
  • Heat transfer mat 12 made of metal wool arranged with the heat exchanger 10 folded up under the pressure of the can flexibly compress adjacent heat exchanger surface.
  • the heat transfer mat 12 creates one excellent heat transfer between the heat exchanger 10 and the heat transfer surfaces of the memory core 2.
  • In the memory core 2 are heat-conducting coupling elements in the form of vertical running metal walls 14, which with the Storage medium 2 are in intimate contact.
  • About these Coupling elements 14 is the heat directly from the Memory core 2 discharged down and over the heat-transferring flexible metal wool mat 12 on the neighboring, upper heat exchanger surface transferred.
  • the ones from Storage core 2 to the heat exchanger 5 transferable amount of heat can be recognized by changing the swivel position of the Change heat exchanger 5.
  • Coupling means for transporting the heat out of the storage core 2 into the border zone between mat 12 and heat exchanger 5 be used.
  • the exemplary embodiment is the heat exchanger 5 'via a Push rod 20 opposite the transfer surface on the underside of the memory core 2 shown as a block.
  • the Actuator of the push rod 20 is in the schematic Representation according to FIG. 2 not shown; such actuators are, for example, in the form of spindle drives or Rack and pinion drives are known in various designs.
  • Fig. 3 shows a perspective view Embodiment of the storage heater, in which a top wall of the housing 1 is omitted and the upper end of the Storage core and the surrounding thermal insulation 15 are exposed.
  • the memory core shown in Fig. 3 contains cassette-shaped metal container 14 'with a molten salt or salt mixture are filled as a storage medium.
  • Such Storage media have excellent storage properties and ensure excellent heat transfer to the bounding walls of the metal container 14 '.
  • the flow channel above the Storage core and / or along one of the housing side walls run.
  • the inlet side shown in FIG. 1 is recommended Arrangement of the blower 8; on the other hand, the blower can also on the outlet side near the outlet panel 7 be arranged.
  • the blower In the area of the movable ends of the Heat exchanger 5 can be attached to flexible aprons the flow channel in the area of the transition points when moving seal the heat exchanger 5.

Abstract

The storage heating device has a heat storage core (2) heated via an electric heating element (3) and enclosed by a housing (1) which has entry and exit openings (6,7) for a flow channel (5), through which air is circulated via an electric fan (8). The flow channel contains a heat exchanger (10) with heat exchange surfaces for transfer of heat stored in the core to the circulated air stream, with the heat exchange coupling factor between the core and the heat exchanger pref. being variable.

Description

Die Erfindung betrifft ein Elektro-Speicherheizgerät mit einem Speicherkern, elektrischen Heizkörpern zum Erwärmen des Speicherkerns, wenigstens einem Strömungskanal, einem Gebläse, welches zum Entladen des Speicherkerns einen Luftstrom durch den wenigstens einen Strömungskanal fördert, und einem den Speicherkern, den Strömungskanal und das Gebläse aufnehmenden Gerätegehäuse, das mit Eintritts- und Austrittsöffnungen für den Strömungskanal versehen ist. Bei herkömmlichen Elektro-Speicherheizgeräten dieser Art ist der Strömungskanal in der Regel mehrfach umgelenkt durch den Speicherkern geführt. Die von dem Gebläse durch den Strömungskanal geführte Luft nimmt die Wärme unmittelbar von dem den Strömungskanal begrenzenden Speicherkernmedium auf und tritt aus den Austrittsöffnungen in den zu erwärmenden Raum aus. Die Ausbildung und der Verlauf sowie die geschickte Abgrenzung des Strömungskanals waren Voraussetzung für eine möglichst gleichmäßige Entladung des Speicherkerns und damit für einen akzeptablen Wirkungsgrad des Speicherheizgeräts. Ein optimaler Wärmeübergang vom Speicherkern auf die durch den Strömungskanal im Speicherkern geführte Gebläseluft ist nur mit entsprechendem baulichen Aufwand zu erreichen; ein derartiges Elektro-Speicherheizgerät ist aus dem Dokument DE-A-2129850 bekannt.The invention relates to an electric storage heater a memory core, electric radiators for heating the Storage core, at least one flow channel, a blower, which causes an air flow to discharge the memory core which promotes at least one flow channel, and one Storage core, the flow channel and the fan receiving Device housing that with inlet and outlet openings for the flow channel is provided. With conventional electric storage heaters this is the flow channel in the Usually deflected several times through the memory core. The air carried by the blower through the flow channel the heat immediately from that delimiting the flow channel Storage core medium occurs and enters from the outlet openings the room to be heated. The training and the course as well as the skillful demarcation of the flow channel Prerequisite for the most uniform possible discharge of the Storage core and thus for an acceptable efficiency of the Storage heater. An optimal heat transfer from Storage core on through the flow channel in the storage core guided blower air is only with appropriate structural Effort to achieve; Such an electric storage heater is known from document DE-A-2129850.

Der Erfindung liegt die Aufgabe zugrunde, eine gleichmäßige und dosierbare Entladung des gesamten Speicherkerns zuverlässig und mit relativ geringem baulichen Aufwand zu erreichen.The invention has for its object a uniform and reliable discharge of the entire memory core and to achieve with relatively little structural effort.

Diese Aufgabe wird durch die Merkmale des Anspruchs 1 gelöst. This object is solved by the features of claim 1.

Mit Hilfe der Kopplungsmittel kann die Wärme dem Speicherkern gleichmäßig entzogen und zum Wärmetauscher übertragen werden, von wo sie in einem vergleichsweise konzentrierten Bereich, nämlich im Bereich der dem Luftstrom ausgesetzten Wärmetauscherfläche, in den zu beheizenden Raum abgeführt werden kann. Der Strömungskanal läßt sich dadurch beträchtlich verkürzen und entsprechend einfach strukturieren. In Form beispielsweise von Platten, Stäben oder Rippen aus gut wärmeleitendem Metall können die Kopplungsmittel gleichmäßig über den Speicherkern verteilt und mit dessen Medium in innigen Kontakt gebracht werden. Über derartige Kopplungsmittel kann die Wärme selbst aus kritischen Eckbereichen ähnlich leicht abgeführt werden wie aus der Mitte eines blockförmigen Speicherkerns. Der Speicherkern selbst kann ebenso wie das Gerätegehäuse äußerst kompakt ausgeführt werden, und die den Speicherkern umgebende Wärmedämmung kann nach den thermischen Dämmungseigenschaften ausgewählt und ausgelegt werden. In der bevorzugten Weiterbildung der Erfindung nach Anspruch 2 ist der Kopplungsgrad zwischen Speicherkern und Wärmetauscher steuerbar. Zu diesem Zweck kann wenigstens eine Wärmetauscherfläche lageveränderlich, beispielsweise im Gerätegehäuse verschiebbar und/oder verschwenkbar angeordnet sein. Durch die Möglichkeit zur Änderung des Kopplungsgrade zwischen Speicherkern und Wärmetauscher kann auf die sonst übliche stetige oder nicht-stetige Gebläsedrehzahlregelung verzichtet werden. Dadurch wird der Benutzerkomfort entsprechend erhöht, denn die Entladung läßt sich bei sehr niedrigen Gebläsedrehzahlen ohne störende Schaltgeräusche relativ genau durch einfache Änderung des Kopplungsgrades bzw. der Lage des Wärmetauschers regeln.With the help of the coupling agent, the heat can Storage core withdrawn evenly and to the heat exchanger are transmitted from where they are comparatively concentrated area, namely in the area of the air flow exposed heat exchanger surface, in the room to be heated can be dissipated. This allows the flow channel shorten it considerably and structure it accordingly. In the form of, for example, plates, rods or ribs from good thermally conductive metal, the coupling agent can be even distributed over the memory core and with its medium inside Be brought in contact. Such coupling means can the heat is similarly light, even from critical corner areas be dissipated like from the middle of a block-shaped Memory core. The memory core itself can just like that Device housing are extremely compact, and the Thermal insulation surrounding the storage core can be according to the thermal Insulation properties can be selected and designed. In the preferred development of the invention according to claim 2 the degree of coupling between the storage core and the heat exchanger controllable. For this purpose, at least one Heat exchanger surface changeable, for example in Device housing can be slidably and / or pivotally arranged. Due to the possibility to change the degree of coupling between Storage core and heat exchanger can be on the otherwise usual continuous or non-continuous fan speed control is dispensed with become. This increases user comfort accordingly, because the discharge can be done at very low Fan speeds without disturbing switching noises relatively accurate by simply changing the degree of coupling or the position of the Regulate the heat exchanger.

Zur Lageänderung der wenigstens einen Wärmetauscherfläche dient ein Stellantrieb, der über einen Regler in Abhängigkeit von einer Regelabweichung, insbesondere von einer Temperaturabweichung gesteuert wird.For changing the position of the at least one heat exchanger surface Serves an actuator that is dependent on a controller from a control deviation, in particular from one Temperature deviation is controlled.

Bei entsprechender Bemessung und Anordnung der Wärmetauscherflächen kann unter Umständen auf den Betrieb des Gebläses verzichtet und ein Konvektionsstrom über die Wärmetauscherflächen geleitet werden, der ähnlich einem statischen Speicherheizgerät die Wärme aus dem Gerät abführt und einen wesentlichen Teil der Entladung des Speicherkerns bewirkt. In jedem Fall können mit Hilfe von über die Wärmetauscherflächen geleitete Konvektionsströmen Ruhephasen des Gebläses verlängert und trotzdem alle Bereiche des Speicherkerns gleichmäßig entladen werden.With appropriate dimensioning and arrangement of the Heat exchanger surfaces may interfere with the operation of the fan waived and a convection current over the Heat exchanger surfaces are conducted, which is similar to one static storage heater that dissipates heat from the device and a substantial part of the discharge of the memory core causes. In any case, with the help of over Convection currents conducted through heat exchanger surfaces of the blower and still extends all areas of the Memory core are discharged evenly.

Bei einem anderen Ausführungsbeispiel der Erfindung ist der Wärmetauscher an einer Halterung aus einem Material mit einem hohen thermischen Ausdehnungskoeffizienten derart angeordnet, daß der Kopplungsgrad zwischen Speicherkern und Wärmetauscher in Abhängigkeit von der Temperatur der Halterung veränderlich ist.In another embodiment of the invention, the Heat exchanger on a holder made of a material with a high thermal expansion coefficient arranged so that the degree of coupling between the storage core and the heat exchanger varies depending on the temperature of the bracket is.

Bei einem bevorzugten Ausführungsbeispiel der Erfindung ist ein Wärmetauscher nur an einer Seite, beispielsweise unterhalb oder oberhalb des Speicherkerns angeordnet.In a preferred embodiment of the invention a heat exchanger only on one side, for example below or arranged above the memory core.

Die Kopplungsmittel können gemäß einer Weiterbildung der Erfindung mindestens eine Schicht aus flexiblem Wärmeübertragungsmaterial aufweisen, die in einer Grenzzone zwischen Speicherkern und Wärmetauscher, beispielsweise an der Unterseite des Speicherkerns angeordnet ist. Als flexibles Wärmeübertragungsmaterial eignet sich besonders eine Matte aus Metallwolle.According to a further development of the Invention at least one layer of flexible Have heat transfer material in a border zone between the storage core and the heat exchanger, for example at the Bottom of the memory core is arranged. As flexible A mat is particularly suitable for heat transfer material Metal wool.

Eine besonders günstige und gleichmäßige Wärmeübergabe vom Speicherkern auf den Wärmetauscher wird erfindungsgemäß dadurch ermöglicht, daß der Speicherkern durch kasten- oder kassettenartige Metallbehälter gebildet ist, die mit einer Salzschmelze oder Salzmischung gefüllt sind. Die Salzschmelze oder Salzmischung hat vorzügliche Wärmespeichereigenschaften. Die Salzschmelze und Salzmischung schmiegt sich relativ homogen und innig an die die Wärme abführenden Metallbehälterwände an, so daß an deren Enden und Übergabestellen zum Wärmetauscher und an den anschließenden, zum Wärmetauscher parallelen Behälterwänden ein hohes Wärmepotential zur Verfügung gestellt wird.A particularly cheap and even heat transfer from According to the invention, the storage core on the heat exchanger is thereby allows the memory core through box or cassette-like metal container is formed with a Melted salt or salt mixture are filled. The molten salt or salt mixture has excellent heat storage properties. The molten salt and salt mixture nestles relatively homogeneously and intimately on the heat-dissipating metal container walls, so that at their ends and transfer points to the heat exchanger and to the subsequent ones parallel to the heat exchanger Container walls provided a high heat potential becomes.

Weitere Ausgestaltungen und Fortbildungen der Erfindung sind in den Unteransprüchen gekennzeichnet.Further refinements and developments of the invention are marked in the subclaims.

Im folgenden wird die Erfindung anhand von in der Zeichnung schematisch dargestellten Ausführungsbeispielen näher erläutert. In der Zeichnung zeigen:

Fig. 1
einen schematischen Vertikalschnitt durch eine erste Ausführungsform eines erfindungsgemäß ausgebildeten Elektro-Speicherheizgerätes, wobei ein Teil des Speicherkerns weggebrochen dargestellt ist;
Fig. 2
eine schematische Teilansicht auf ein abgewandeltes Ausführungsbeispiel mit einem zur Änderung des Kopplungsgrades verschiebbaren Wärmetauscher; und
Fig. 3
eine schematische perspektivische Ansicht auf einen Teil eines Speicherheizgeräts mit einer Speicherkernstruktur, die sich für das neue Elektro-Speicherheizgerät besonders eignet.
The invention is explained in more detail below with reference to exemplary embodiments schematically illustrated in the drawing. The drawing shows:
Fig. 1
a schematic vertical section through a first embodiment of an electric storage heater designed according to the invention, with part of the storage core being shown broken away;
Fig. 2
is a schematic partial view of a modified embodiment with a displaceable to change the degree of coupling heat exchanger; and
Fig. 3
a schematic perspective view of part of a storage heater with a storage core structure, which is particularly suitable for the new electric storage heater.

Bei dem in Fig. 1 schematisch dargestellten Ausführungsbeispiel des neuen Elektro-Speicherheizgeräts umschließt ein mit einer Wärmedämmung versehenes Gerätegehäuse eine Aufnahmekammer für einen Speicherkern 2. In dem Speicherkern sind elektrische Heizkörper 3 zum Erwärmen des Speicherkerns in gleichmäßiger Verteilung angeordnet. Der Speicherkern 2 ist als kompakter, im wesentlichen geschlossener Block ausgebildet. Ein Teil des Speicherkerns ist weggebrochen dargestellt, so daß eine Reihe von Gehäusedurchbrüchen 4 sichtbar wird, durch die Konvektionsströme aus dem Gehäuseinnenraum in den zu beheizenden Raum nach außen austreten und für eine gewisse statische Entladung des Speicherkerns sorgen können.In the schematically shown in Fig. 1 Embodiment of the new electric storage heater encloses a device housing with thermal insulation a receiving chamber for a memory core 2. In the Storage core are electric radiators 3 for heating the Storage core arranged in an even distribution. The Memory core 2 is a more compact, essentially closed Block trained. Part of the memory core has broken away shown so that a series of housing openings 4th becomes visible through the convection currents from the Housing interior into the room to be heated to the outside emerge and for a certain static discharge of the Storage core can worry.

Ein relativ breiter Strömungskanal 5 erstreckt sich von einer mit Eintrittsöffnungen versehenen Eintrittsblende 6 ausgehend durch eine bodenseitige Gehäusekammer bis zu einer auf der gegenüberliegenden Gehäuseseite angeordneten Austrittsöffnung 7. Hinter der Eintrittsblende 6 ist im Strömungskanal 5 ein Gebläse 8 angeordnet, das einen Luftstrom von der Eintrittsseite durch den Strömungskanal 5 zur Austrittsöffnung 7 fördert, um den Speicherkern zu entladen. Der Strömungskanal 5 wird auf der dem Speicherkern 2 zugewandten Seite durch einen im beschriebenen Ausführungsbeispiel als Rippenrohr-Wärmetauscher ausgebildeten Wärmetauscher 10 begrenzt. Der Wärmetauscher 10 ist an seinem der Eintrittsblende 6 benachbarten Ende über ein Schwenklager 11 gehaltert und kann mit Hilfe eines in der Zeichnung nicht dargestellten Schwenkantriebs in verschiedene Schwenkstellungen gebracht werden. In der Grenzzone unmittelbar im Anschluß an die Unterseite des Speicherkerns 2 ist eine Wärmeübertragungsmatte 12 aus Metallwolle angeordnet, die sich bei hochgeklapptem Wärmetauscher 10 unter dem Andruck der benachbarten Wärmetauscherfläche flexibel zusammendrücken läßt. Dabei schafft die Wärmeübertragungsmatte 12 einen ausgezeichneten Wärmeübergang zwischen dem Wärmetauscher 10 und den Wärmeübergangsflächen des Speicherkerns 2. Im Speicherkern 2 sind wärmeleitende Kopplungselemente in Form von vertikal verlaufenden Metallwänden 14 eingezogen, die mit dem Speichermedium 2 in innigem Kontakt stehen. Über diese Kopplungselemente 14 wird die Wärme unmittelbar aus dem Speicherkern 2 nach unten abgeführt und über die wärmeübertragende flexible Metallwollenmatte 12 auf die benachbarte, obere Wärmetauscherfläche übertragen. Die vom Speicherkern 2 auf den Wärmetauscher 5 übertragbare Wärmemenge läßt sich erkennbar durch Änderung der Schwenklage des Wärmetauschers 5 ändern. Sie ist in der horizontalen (strichpunktierten) Stellung bei vollständigem Kontakt des Wärmetauschers mit der zusammengedrückten flexiblen Matte 12 am größten und in der weitergehenden, mit ausgezogenen Linien dargestellten unteren Schwenkposition am geringsten. Der Kopplungsgrad und somit die vom Luftstrom durch den Strömungskanal 5 abgeführte Wärmemenge ist daher einerseits von der Temperatur des Speicherkerns 2 und andererseits von der Relativposition des schwenkbaren Wärmetauschers 5 abhängig. Das Gebläse 8 kann daher in langen Aktivperioden mit gleichbleibend niedriger Drehzahl betrieben werden, wobei der Wärmebedarf durch Variation der Schwenkposition des Wärmetauschers kontinuierlich gedeckt wird.A relatively wide flow channel 5 extends from an inlet panel 6 provided with inlet openings starting from a bottom housing chamber to one arranged on the opposite side of the housing Outlet opening 7. Behind the inlet panel 6 is in Flow channel 5, a blower 8 arranged, the air flow from the inlet side through the flow channel 5 to Exit opening 7 promotes to discharge the memory core. The flow channel 5 is located on the storage core 2 facing side by one described in Embodiment designed as a finned tube heat exchanger Heat exchanger 10 limited. The heat exchanger 10 is on his the inlet panel 6 adjacent end via a pivot bearing 11 supported and can not with the help of one in the drawing shown swivel drive in different swivel positions to be brought. In the border zone immediately after the bottom of the memory core 2 is one Heat transfer mat 12 made of metal wool arranged with the heat exchanger 10 folded up under the pressure of the can flexibly compress adjacent heat exchanger surface. The heat transfer mat 12 creates one excellent heat transfer between the heat exchanger 10 and the heat transfer surfaces of the memory core 2. In the memory core 2 are heat-conducting coupling elements in the form of vertical running metal walls 14, which with the Storage medium 2 are in intimate contact. About these Coupling elements 14 is the heat directly from the Memory core 2 discharged down and over the heat-transferring flexible metal wool mat 12 on the neighboring, upper heat exchanger surface transferred. The ones from Storage core 2 to the heat exchanger 5 transferable amount of heat can be recognized by changing the swivel position of the Change heat exchanger 5. It is horizontal (dash-dotted) position when the Heat exchanger with the compressed flexible mat 12 am largest and in the broader, with solid lines shown lower pivot position least. The Degree of coupling and thus that of the air flow through the Flow channel 5 dissipated amount of heat is therefore on the one hand of the temperature of the memory core 2 and on the other hand from the Relative position of the pivotable heat exchanger 5 dependent. The Blower 8 can therefore remain the same in long active periods be operated at low speed, the heat requirement by varying the swivel position of the heat exchanger is continuously covered.

Anstelle von Metallwänden können geeignete andere Kopplungsmittel zum Transport der Wärme aus dem Speicherkern 2 in die Grenzzone zwischen Matte 12 und Wärmetauscher 5 verwendet werden.Instead of metal walls, other suitable ones Coupling means for transporting the heat out of the storage core 2 into the border zone between mat 12 and heat exchanger 5 be used.

Bei dem in Fig. 2 in Teilansichten dargestellten Ausführungsbeispiel ist der Wärmetauscher 5' über eine Schubstange 20 gegenüber der Übergabefläche an der Unterseite des als Block dargestellten Speicherkerns 2 verschiebbar. Der Stellantrieb der Schubstange 20 ist in der schematischen Darstellung gemäß Fig. 2 nicht gezeigt; derartige Stellantriebe sind beispielsweise in Form von Spindelantrieben oder Zahnstangenantrieben in vielfältiger Ausführung bekannt.In the partial views shown in Fig. 2 The exemplary embodiment is the heat exchanger 5 'via a Push rod 20 opposite the transfer surface on the underside of the memory core 2 shown as a block. The Actuator of the push rod 20 is in the schematic Representation according to FIG. 2 not shown; such actuators are, for example, in the form of spindle drives or Rack and pinion drives are known in various designs.

Fig. 3 zeigt in perspektivischer Ansicht eine Ausführungsform des Speicherheizgeräts, bei dem eine Deckwand des Gehäuses 1 fortgelassen ist und das obere Ende des Speicherkerns und die diesen umgebende Wärmedämmung 15 freigelegt sind. Der in Fig. 3 gezeigte Speicherkern enthält kassettenförmige Metallbehälter 14', die mit einer Salzschmelze oder Salzmischung als Speichermedium gefüllt sind. Derartige Speichermedien haben vorzügliche Speichereigenschaften und gewährleisten einen hervorragenden Wärmeübergang zu den begrenzenden Wänden der Metallbehälter 14'. Diese wirken bei dem in Fig. 3 dargestellten Ausführungsbeispiel als Kopplungselemente und transportieren die im Speichermedium gespeicherte Wärme zu den Übergabeflächen im Bodenbereich des Speicherkerns 2'.Fig. 3 shows a perspective view Embodiment of the storage heater, in which a top wall of the housing 1 is omitted and the upper end of the Storage core and the surrounding thermal insulation 15 are exposed. The memory core shown in Fig. 3 contains cassette-shaped metal container 14 'with a molten salt or salt mixture are filled as a storage medium. Such Storage media have excellent storage properties and ensure excellent heat transfer to the bounding walls of the metal container 14 '. These contribute the embodiment shown in Fig. 3 as Coupling elements and transport them in the storage medium stored heat to the transfer surfaces in the bottom area of the Memory core 2 '.

Ferner kann der Strömungskanal oberhalb des Speicherkerns und/oder entlang einer der Gehäuse-Seitenwände verlaufen. Bei schwenkbarer Anordnung des Wärmetauschers 5 empfiehlt sich die in Fig. 1 dargestellte eintrittsseitige Anordnung des Gebläses 8; andererseits kann aber das Gebläse auch an der Austrittsseite nahe der Austrittsblende 7 angeordnet sein. Im Bereich der beweglichen Enden des Wärmetauschers 5 können flexible Schürzen angebracht sein, die den Strömungskanal im Bereich der Übergangsstellen bei Bewegung des Wärmetauschers 5 abdichten.Furthermore, the flow channel above the Storage core and / or along one of the housing side walls run. With swiveling arrangement of the heat exchanger 5 the inlet side shown in FIG. 1 is recommended Arrangement of the blower 8; on the other hand, the blower can also on the outlet side near the outlet panel 7 be arranged. In the area of the movable ends of the Heat exchanger 5 can be attached to flexible aprons the flow channel in the area of the transition points when moving seal the heat exchanger 5.

Claims (9)

  1. Electric storage heater with a storage core (2), electric heating bodies (3) for warming the storage core (2), at least one flow passage (5), a fan (8), which moves an air current through the at least one flow passage (5) for the purpose of discharging the storage core (2), and a housing, which accommodates the storage core (2), the flow passage (5) and the fan (8) and is provided with inlet and outlet openings (6; 7) for the flow passage (5), a heat exchanger (10) being arranged in or on the flow passage (5) such that at least one of its heat exchange surfaces is in heat exchange relationship with an air current moved through the flow passage (5), characterised in that provided between the storage core (2) and heat exchanger (10) there are thermal coupling means (14; 12), which hold the storage core (2) and the heat exchanger (10) in thermal contact so that the storage core (2) may be discharged indirectly via the heat exchanger (2), and that at least a portion of the heat exchanger (10) is movably arranged so that the thermal contact between the storage core (2) and heat exchanger (10) is controllable.
  2. Storage heater as claimed in claim 1, characterised in that at least one heat exchanger surface is arranged to be slidable and/or pivotable within the housing by means of a positioning drive (5) in order to control the thermal contact.
  3. Storage heater as claimed in claim 2, characterised in that a positioning drive for controlling the thermal contact between the storage core (2) and heat exchanger (10) is controllable in dependence on a temperature control deviation.
  4. Storage heater as claimed in one of claims 1-3, characterised in that the heat exchanger (10) is arranged on a mounting of a material with a high coefficient of thermal expansion such that the thermal contact between the storage core (2) and heat exchanger (10) is variable in dependence on the temperature of the mounting.
  5. Storage heater as claimed in one of claims 1-4, characterised in that the coupling means (12; 14) have heat conductive, preferably metallic, elements in the form of metal plates (14) and/or ribs and/or rods, which pass through a portion of the storage core (2), taking up heat from the latter, and extend in the direction of the heat exchanger (10).
  6. Storage heater as claimed in one of claims 1-5, characterised in that the storage core (2) is constituted by cassette-like metal containers which are filled with a fused salt or a salt mixture.
  7. Storage heater as claimed in claim 6, characterised in that the cassette-like metal containers are assembled with parallel, flat walls and the container walls constitute coupling means for the thermal transfer to the heat exchanger.
  8. Storage heater as claimed in one of claims 1-7, characterised in that the heat exchanger (10) is constructed in the form of a ribbed tube heat exchanger.
  9. Storage heater as claimed in one of claims 1-8, characterised in that the coupling means have at least one layer (12) of flexible heat transfer material, for instance a metal wool mat (12), which is disposed in a boundary zone between the storage core (2) and heat exchanger (10).
EP95115377A 1994-11-09 1995-09-29 Electric storage heating apparatus Expired - Lifetime EP0711962B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4439985 1994-11-09
DE4439985A DE4439985A1 (en) 1994-11-09 1994-11-09 Electric storage heater

Publications (2)

Publication Number Publication Date
EP0711962A1 EP0711962A1 (en) 1996-05-15
EP0711962B1 true EP0711962B1 (en) 2000-02-23

Family

ID=6532858

Family Applications (1)

Application Number Title Priority Date Filing Date
EP95115377A Expired - Lifetime EP0711962B1 (en) 1994-11-09 1995-09-29 Electric storage heating apparatus

Country Status (6)

Country Link
EP (1) EP0711962B1 (en)
AT (1) ATE189921T1 (en)
CZ (1) CZ286368B6 (en)
DE (2) DE4439985A1 (en)
ES (1) ES2145861T3 (en)
PL (1) PL179932B1 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10007793A1 (en) * 2000-02-21 2001-08-23 Olsberg Hermann Everken Gmbh Electric storage heater has roof-shaped upper wall of hot air collection chamber with outlets in at least one sloping roof section and at least one valve flap in form of plate pivotable about ridge
CN103697505A (en) * 2013-12-20 2014-04-02 陈坚胜 Household electric furnace
CN106322487B (en) * 2016-08-25 2019-05-03 刘德信 A kind of phase-change type heat-storage electrical heater

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1084193A (en) * 1900-01-01
US2434575A (en) * 1946-05-08 1948-01-13 Electromaster Inc Heating system
DE1579829A1 (en) * 1966-04-02 1970-08-27 Heinz Buerger Improved electric storage boiler with contact break device
DE1779789B1 (en) * 1968-09-26 1971-03-25 Strebelwerk Gmbh Thermal storage boiler
DE2129850B2 (en) * 1971-06-16 1976-08-12 Siemens AG, 1000 Berlin und 8000 München Electric storage heater with finned heat exchanger - allowing infinitely variable heat control by using flap valve

Also Published As

Publication number Publication date
EP0711962A1 (en) 1996-05-15
CZ263395A3 (en) 1996-05-15
CZ286368B6 (en) 2000-03-15
ATE189921T1 (en) 2000-03-15
DE59507838D1 (en) 2000-03-30
PL179932B1 (en) 2000-11-30
PL311182A1 (en) 1996-05-13
DE4439985A1 (en) 1996-05-15
ES2145861T3 (en) 2000-07-16

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