EP1271086A1 - Rotary heat exchanger - Google Patents

Rotary heat exchanger Download PDF

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Publication number
EP1271086A1
EP1271086A1 EP01114938A EP01114938A EP1271086A1 EP 1271086 A1 EP1271086 A1 EP 1271086A1 EP 01114938 A EP01114938 A EP 01114938A EP 01114938 A EP01114938 A EP 01114938A EP 1271086 A1 EP1271086 A1 EP 1271086A1
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EP
European Patent Office
Prior art keywords
heat exchanger
rotor heat
foils
flow
rotating body
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.)
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Application number
EP01114938A
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German (de)
French (fr)
Inventor
Hans Klingenburg
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Klingenburg GmbH
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Klingenburg GmbH
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Publication date
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Priority to EP01114938A priority Critical patent/EP1271086A1/en
Publication of EP1271086A1 publication Critical patent/EP1271086A1/en
Withdrawn legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D19/00—Regenerative heat-exchange apparatus in which the intermediate heat-transfer medium or body is moved successively into contact with each heat-exchange medium
    • F28D19/04—Regenerative heat-exchange apparatus in which the intermediate heat-transfer medium or body is moved successively into contact with each heat-exchange medium using rigid bodies, e.g. mounted on a movable carrier
    • F28D19/041—Regenerative heat-exchange apparatus in which the intermediate heat-transfer medium or body is moved successively into contact with each heat-exchange medium using rigid bodies, e.g. mounted on a movable carrier with axial flow through the intermediate heat-transfer medium
    • F28D19/042—Rotors; Assemblies of heat absorbing masses
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F3/00—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems
    • F24F3/12—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling
    • F24F3/14—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling by humidification; by dehumidification
    • F24F3/1411—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling by humidification; by dehumidification by absorbing or adsorbing water, e.g. using an hygroscopic desiccant
    • F24F3/1423—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling by humidification; by dehumidification by absorbing or adsorbing water, e.g. using an hygroscopic desiccant with a moving bed of solid desiccants, e.g. a rotary wheel supporting solid desiccants
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F2203/00—Devices or apparatus used for air treatment
    • F24F2203/10—Rotary wheel
    • F24F2203/1032—Desiccant wheel
    • F24F2203/1036—Details
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F2203/00—Devices or apparatus used for air treatment
    • F24F2203/10—Rotary wheel
    • F24F2203/1048—Geometric details
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F2203/00—Devices or apparatus used for air treatment
    • F24F2203/10—Rotary wheel
    • F24F2203/1068—Rotary wheel comprising one rotor
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F2203/00—Devices or apparatus used for air treatment
    • F24F2203/10—Rotary wheel
    • F24F2203/1084—Rotary wheel comprising two flow rotor segments

Definitions

  • the invention relates to a rotor heat exchanger a rotating body, which is rotatably supported, the end face has an inflow and an outflow sector, which the Rotating body passes through during a rotation, and that from a Material matrix is formed, which consists of foils, between which flow passages axially penetrate the rotating body are formed.
  • Such rotor heat exchangers are used within a heating or ventilation system arranged so that their outflow sector from the exhaust air and their inflow sector from the supply air flow becomes.
  • the exhaust air flow becomes thermal energy and air humidity withdrawn, the thermal energy in the material matrix is saved and extracted from the exhaust air flow Humidity on the surfaces of the Films of the material matrix forming flow channels attaches. If the parts of the Material matrix from the outflow sector to the inflow sector advised, he takes the material matrix in the inflow sector incoming air flow heat from the material matrix and Moisture from the surfaces of the material matrix foils on. This results in the air conditioning of Clearing or the like significant savings.
  • the invention has for its object the generic Develop rotor heat exchangers such that its efficiency is considerably increased.
  • the Flow channels a triangular or polygonal flow cross-section exhibit. This will change to the rotor heat exchangers known from the prior art, where the flow channels have a suitable shape have rounded flow cross-section, prevents that isolate on the walls of the flow channels Form boundary layers. In the corners of the invention three or polygonal flow channels are created inevitably turbulence that the design of such insulating boundary layer that is more laminar with the Flow conditions, as in the state of the Prevail technology-trained rotor heat exchangers, usually occurs prevented.
  • the invention is in rotor heat exchangers advantageously applicable, in which the radial dimension of the Flow channels between 1 mm and 3 mm.
  • Aluminum has proven to be a particularly favorable material.
  • the transfer of humidity from the rotor heat exchanger significantly improved.
  • a further increase in Transfer capacity of the rotor heat exchanger results by coating the surfaces of the material matrix forming films with inhibited lithium chloride.
  • the lithium chloride acting as an absorbent has one high affinity for water, which affects those treated in this way Surfaces very quickly forms a water film that leads to the accumulation of further moisture, which then the Material matrix in the inflow sector can be taken from the supply air flow is.
  • inhibited lithium chloride has the consequence that normally very much against such salts sensitive aluminum foils permanently and without appearance severe corrosion can be coated.
  • Aluminum matrices designed and coated in this way or Aluminum wheels have an air humidity transfer highest rewetting numbers and can also be used as Dryer can be used.
  • lithium chloride Inhibitors As a particularly suitable one to be added to the lithium chloride Inhibitors have been chromated based Fabrics or materials with equivalent effects exposed.
  • a particularly durable and against signs of corrosion permanent design of the coated with lithium chloride Aluminum matrix results when coating the Surfaces a 6 - 15 vol .-%, preferably 10 vol .-% Lithium chloride solution in water is used.
  • Rotor heat exchanger 1 has one in the illustrated embodiment approximately square frame 2.
  • a rotating body 3 which is designed as an aluminum wheel around a hub 4 rotatably arranged.
  • a rotating motor 3 serves as a motor 5.
  • An end face or flow cross-sectional area of the rotating body 3 is divided into an inflow sector 6 and an outflow sector 7.
  • the inflow sector 6 formed below a horizontal beam 8, of the two opposite sides of the frame 2 connects with each other.
  • the outflow sector 7 is above this horizontal support 8 is formed.
  • the inflow sector 6 of the rotor heat exchanger is one Air flow 9 flows through, while the outflow sector 7 of Flows through the rotor heat exchanger 1 by an exhaust air stream 10 becomes.
  • the rotating body 3 designed as an aluminum wheel consists of an aluminum matrix 12, the basic structure of which in FIG. 2 is shown, which is a sector of FIG. 1 shown rotating body 3 shows from which - in contrast to Representation in Figure 1 - the detailed structure of the rotating body 3 emerges.
  • the aluminum matrix 12 consists of smooth cylindrical and folded or folded aluminum foils 13 and 14, respectively, one of which is folded or folded Aluminum foil 13 with two flat aluminum foils 14 Flow channels 15 forms the rotating body 3 and that Push the aluminum wheel through in the direction of flow.
  • the surfaces of the aluminum foils 13, 14 are one capillary structure roughened, causing humidity is more transferable. Furthermore, these are the flow channels 15 forming surfaces of the aluminum foils 13, 14 treated with a lithium chloride solution which contains 10 vol .-% lithium chloride in water. As Inhibited lithium chloride is used, its inhibitor based on chromated substances are made.
  • each flow channel 15 in the illustrated embodiment three tapering Corners 16, 17, 18 is due to the in these Corners 16, 17, 18 of the flow channels 15 arise Turbulence prevents a capillary narrowing of the Flow channels 15 occurs; on the walls of the channels 15 there is therefore no impairment of the heat exchange properties insulating boundary layer which at laminar flow conditions could occur. Due to the turbulence arising in the corners 16, 17, 18 thus more air particles get into immediate Contact with those through the aluminum foils 13, 14 formed walls of the flow channels 15.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)

Abstract

The device has a rotary body (3) that is rotatably mounted with its end surfaces (6,7) having incident flow and outflow sectors for passage through the rotor body during a rotation and that is made of a material matrix consisting of foils, between which are formed flow channels passing axially through the body. The flow channels have a triangular or higher order polygonal cross-section.

Description

Die Erfindung bezieht sich auf einen Rotorwärmetauscher mit einem Drehkörper, der drehbar gelagert ist, dessen Stirnfläche einen Anström- und einen Abströmsektor aufweist, die der Drehkörper bei einer Drehung durchläuft, und der aus einer Werkstoffmatrix ausgebildet ist, die aus Folien besteht, zwischen denen den Drehkörper axial durchsetzende Strömungskanäle gebildet sind.The invention relates to a rotor heat exchanger a rotating body, which is rotatably supported, the end face has an inflow and an outflow sector, which the Rotating body passes through during a rotation, and that from a Material matrix is formed, which consists of foils, between which flow passages axially penetrate the rotating body are formed.

Derartige Rotorwärmetauscher werden innerhalb eines Heizungs- bzw. Belüftungssystems so angeordnet, daß ihr Abströmsektor vom Abluft- und ihr Anströmsektor vom Zuluftstrom bestrichen wird. Hierbei wird dem Abluftstrom Wärmeenergie und Luftfeuchtigkeit entzogen, wobei die Wärmeenergie in der Werkstoffmatrix gespeichert wird und die dem Abluftstrom entzogene Luftfeuchtigkeit sich auf den Oberflächen der die Strömungskanäle ausbildenden Folien der Werkstoffmatrix anlagert. Wenn die vom Abluftstrom durchströmten Teile der Werkstoffmatrix aus dem Abströmsektor in den Anströmsektor geraten, nimmt der die Werkstoffmatrix im Anströmsektor durchströmende Zuluftstrom Wärme aus der Werkstoffmatrix und Feuchtigkeit von den Oberflächen der Folien der Werkstoffmatrix auf. Hierdurch ergeben sich bei der Klimatisierung von Räumen od.dgl. erhebliche Einsparungen.Such rotor heat exchangers are used within a heating or ventilation system arranged so that their outflow sector from the exhaust air and their inflow sector from the supply air flow becomes. Here, the exhaust air flow becomes thermal energy and air humidity withdrawn, the thermal energy in the material matrix is saved and extracted from the exhaust air flow Humidity on the surfaces of the Films of the material matrix forming flow channels attaches. If the parts of the Material matrix from the outflow sector to the inflow sector advised, he takes the material matrix in the inflow sector incoming air flow heat from the material matrix and Moisture from the surfaces of the material matrix foils on. This results in the air conditioning of Clearing or the like significant savings.

Der Erfindung liegt die Aufgabe zugrunde, den gattungsgemäßen Rotorwärmetauscher derart weiterzubilden, daß sein Wirkungsgrad beträchtlich erhöht ist.The invention has for its object the generic Develop rotor heat exchangers such that its efficiency is considerably increased.

Diese Aufgabe wird erfindungsgemäß dadurch gelöst, daß die Strömungskanäle einen drei- oder mehreckigen Strömungsquerschnitt aufweisen. Hierdurch wird in Abänderung zu den aus dem Stand der Technik bekannten Rotorwärmetauschern, bei denen die Strömungskanäle einen in geeigneter Form abgerundeten Strömungsquerschnitt aufweisen, verhindert, daß sich an den Wandungen der Strömungskanäle isolierende Grenzschichten ausbilden. In den Ecken der erfindungsgemäß drei- oder mehreckig gestalteten Strömungskanäle entstehen zwangsläufig Turbulenzen, die die Ausgestaltung einer derartigen isolierenden Grenzschicht, die bei den mehr laminaren Strömungsverhältnissen, wie sie bei gemäß dem Stand der Technik ausgebildeten Rotorwärmetauschern vorherrschen, üblicherweise auftritt, verhindert. Aufgrund dieser in den Ecken der erfindungsgemäß gestalteten Strömungskanäle sich entwickelnden Turbulenzen geraten somit mehr Luftpartikel als beim Stand der Technik in unmittelbaren Kontakt mit den Innenwandungen der Strömungskanäle, so daß der Wirkungsgrad des erfindungsgemäßen Rotorwärmetauschers erheblich, d.h. um bis zu 20 %, erhöht werden kann.This object is achieved in that the Flow channels a triangular or polygonal flow cross-section exhibit. This will change to the rotor heat exchangers known from the prior art, where the flow channels have a suitable shape have rounded flow cross-section, prevents that isolate on the walls of the flow channels Form boundary layers. In the corners of the invention three or polygonal flow channels are created inevitably turbulence that the design of such insulating boundary layer that is more laminar with the Flow conditions, as in the state of the Prevail technology-trained rotor heat exchangers, usually occurs prevented. Because of this in the corners of the flow channels designed according to the invention developing turbulence thus gets more air particles than in direct contact with the prior art the inner walls of the flow channels, so that the efficiency the rotor heat exchanger according to the invention considerably, i.e. can be increased by up to 20%.

Insbesondere ist die Erfindung bei Rotorwärmetauschern vorteilhaft anwendbar, bei denen die Radialabmessung der Strömungskanäle zwischen 1 mm und 3 mm liegt.In particular, the invention is in rotor heat exchangers advantageously applicable, in which the radial dimension of the Flow channels between 1 mm and 3 mm.

Als für die Werkstoffmatrix derartiger Rotorwärmetauscher besonders günstiger Werkstoff hat sich Aluminium erwiesen.As for the material matrix of such a rotor heat exchanger Aluminum has proven to be a particularly favorable material.

Wenn die Folien auf ihren die Strömungskanäle ausbildenden und begrenzenden Oberflächen zu einer kapillarischen Struktur aufgerauht und diese Oberflächen mit inhibiertem Lithiumchlorid beschichtet sind, wird durch die Aufrauhung der Oberflächen der die Werkstoffmatrix ausbildenden Folien und die dadurch geschaffene kapillarische Struktur die Übertragung von Luftfeuchtigkeit des Rotorwärmetauschers erheblich verbessert. Eine weitere Steigerung der Übertragungsfähigkeit des Rotorwärmetauschers ergibt sich durch die Beschichtung der Oberflächen der die Werkstoffmatrix ausbildenden Folien mit inhibiertem Lithiumchlorid. Das als Absorbent wirkende Lithiumchlorid hat eine hohe Wasseraffinität, wodurch sich auf den derart behandelten Oberflächen sehr schnell ein Wasserfilm ausbildet, der zur Anlagerung weiterer Feuchtigkeit führt, welche dann der Werkstoffmatrix im Anströmsektor durch den Zuluftstrom entnehmbar ist. Die Verwendung von inhibiertem Lithiumchlorid hat zur Folge, daß normalerweise gegen derartige Salze sehr empfindlichen Aluminiumfolien dauerhaft und ohne Auftreten starker Korrosionserscheinungen beschichtet werden können. Derartig ausgebildete und beschichtete Aluminiummatrizen bzw. Aluminiumräder haben hinsichtlich der Übertragung der Luftfeuchtigkeit höchste Rückfeuchtzahlen und können auch als Trockner verwendet werden.If the foils on their forming the flow channels and bounding surfaces to a capillary structure roughened and these surfaces with inhibited Lithium chloride are coated by roughening the surfaces of the materials matrix Foils and the resulting capillary structure the transfer of humidity from the rotor heat exchanger significantly improved. A further increase in Transfer capacity of the rotor heat exchanger results by coating the surfaces of the material matrix forming films with inhibited lithium chloride. The lithium chloride acting as an absorbent has one high affinity for water, which affects those treated in this way Surfaces very quickly forms a water film that leads to the accumulation of further moisture, which then the Material matrix in the inflow sector can be taken from the supply air flow is. The use of inhibited lithium chloride has the consequence that normally very much against such salts sensitive aluminum foils permanently and without appearance severe corrosion can be coated. Aluminum matrices designed and coated in this way or Aluminum wheels have an air humidity transfer highest rewetting numbers and can also be used as Dryer can be used.

Als besonders geeignete, dem Lithiumchlorid beizugebende Inhibierungsmittel haben sich auf der Basis chromatierter Stoffe oder wirkungsgleicher Stoffe hergestellte Materialien herausgestellt.As a particularly suitable one to be added to the lithium chloride Inhibitors have been chromated based Fabrics or materials with equivalent effects exposed.

Eine besonders dauerhafte und gegen Korrosionserscheinungen beständige Ausgestaltung der mit Lithiumchlorid beschichteten Aluminiummatrix ergibt sich, wenn zur Beschichtung der Oberflächen eine 6 - 15 Vol.-%ige, vorzugsweise 10 Vol.-%ige Lithiumchloridlösung in Wasser verwendet wird.A particularly durable and against signs of corrosion permanent design of the coated with lithium chloride Aluminum matrix results when coating the Surfaces a 6 - 15 vol .-%, preferably 10 vol .-% Lithium chloride solution in water is used.

Im folgenden wird die Erfindung anhand einer Ausführungsform unter Bezugnahme auf die Zeichnungen näher erläutert.The invention based on an embodiment explained in more detail with reference to the drawings.

Es zeigen:

Figur 1
eine Ansicht eines erfindungsgemäßen Rotorwärmetauschers;
Figur 2
einen Sektorausschnitt eines Drehkörpers des in Figur 1 dargestellten erfindungsgemäßen Rotorwärmetauschers; und
Figur 3
eine Prinzipdarstellung von in in Figur 2 teilweise gezeigten Drehkörper ausgebildeten Strömungskanälen.
Show it:
Figure 1
a view of a rotor heat exchanger according to the invention;
Figure 2
a sector section of a rotating body of the rotor heat exchanger according to the invention shown in Figure 1; and
Figure 3
a schematic representation of flow channels formed in part shown in Figure 2.

Ein in Figur 1 in perspektivischer Ansicht dargestellter Rotorwärmetauscher 1 hat einen in der dargestellten Ausführungsform etwa quadratischen Rahmen 2.A shown in Figure 1 in a perspective view Rotor heat exchanger 1 has one in the illustrated embodiment approximately square frame 2.

Innerhalb des etwa quadratischen Rahmens 2 ist ein Drehkörper 3, der als Aluminiumrad ausgebildet ist, um eine Nabe 4 drehbar angeordnet. Als Antrieb für die Drehbewegung des Drehkörpers 3 dient ein Motor 5.Within the approximately square frame 2 is a rotating body 3, which is designed as an aluminum wheel around a hub 4 rotatably arranged. As a drive for the rotary movement of the A rotating motor 3 serves as a motor 5.

Eine Stirn- bzw. Strömungsquerschnittfläche des Drehkörpers 3 gliedert sich in einen Anströmsektor 6 und einen Abströmsektor 7. In der dargestellten Ausführungsform ist der Anströmsektor 6 unterhalb eines Horizontalträgers 8 ausgebildet, der zwei einander gegenüberliegende Seiten des Rahmens 2 miteinander verbindet. Der Abströmsektor 7 ist oberhalb dieses Horizontalträgers 8 ausgebildet.An end face or flow cross-sectional area of the rotating body 3 is divided into an inflow sector 6 and an outflow sector 7. In the illustrated embodiment, the inflow sector 6 formed below a horizontal beam 8, of the two opposite sides of the frame 2 connects with each other. The outflow sector 7 is above this horizontal support 8 is formed.

Der Anströmsektor 6 des Rotorwärmetauschers wird von einem Zuluftstrom 9 durchströmt, während der Abströmsektor 7 des Rotorwärmetauschers 1 durch einen Abluftstrom 10 durchströmt wird.The inflow sector 6 of the rotor heat exchanger is one Air flow 9 flows through, while the outflow sector 7 of Flows through the rotor heat exchanger 1 by an exhaust air stream 10 becomes.

Während der beim dargestellten Ausführungsbeispiel als Aluminiumrad ausgebildete Drehkörper 3 - getrieben durch den Motor 5 in der durch den Pfeil 11 dargestellten Drehrichtung - den Abströmsektor 7 durchläuft, entnimmt er dem Abluftstrom 10 Wärmeenergie und Luftfeuchtigkeit. Die Wärmeenergie wird durch Erhöhung der Temperatur des Drehkörpers gespeichert, während die Entnahme von Luftfeuchtigkeit in der Anlagerung von Wasser auf den Oberflächen des Aluminiumrads stattfindet. Wenn der Drehkörper 3 den Anströmsektor 6 durchläuft, gibt er sowohl in ihm gespeicherte Wärmeenergie als auch an seinen Oberflächen angelagerte Luftfeuchtigkeit in Form von Wasser an den Zuluftstrom 9 ab.While in the illustrated embodiment as Aluminum wheel trained rotating body 3 - driven by the engine 5 in the arrow 11 shown Direction of rotation - passes through the outflow sector 7, removes he the exhaust air flow 10 thermal energy and humidity. The thermal energy is generated by increasing the temperature of the rotating body stored while taking out humidity in the accumulation of water on the surfaces of the aluminum wheel takes place. If the rotating body 3 passes through the inflow sector 6, there are both stored in it Thermal energy as well as accumulated on its surfaces Humidity in the form of water to the supply air flow 9 from.

Der als Aluminiumrad ausgebildete Drehkörper 3 besteht aus einer Aluminiummatrix 12, deren grundsätzlicher Aufbau in Figur 2 dargestellt ist, die einen Sektor des in Figur 1 dargestellten Drehkörpers 3 zeigt, aus dem - im Gegensatz zur Darstellung in Figur 1 - der detailgenaue Aufbau des Drehkörpers 3 hervorgeht. Die Aluminiummatrix 12 besteht aus glattzylindrischen und geknickten bzw. gefalteten Aluminiumfolien 13 bzw. 14, wobei jeweils eine geknickte bzw. gefaltete Aluminiumfolie 13 mit zwei ebenen Aluminiumfolien 14 Strömungskanäle 15 ausbildet, die den Drehkörper 3 bzw. das Aluminiumrad in Strömungsrichtung durchsetzen.The rotating body 3 designed as an aluminum wheel consists of an aluminum matrix 12, the basic structure of which in FIG. 2 is shown, which is a sector of FIG. 1 shown rotating body 3 shows from which - in contrast to Representation in Figure 1 - the detailed structure of the rotating body 3 emerges. The aluminum matrix 12 consists of smooth cylindrical and folded or folded aluminum foils 13 and 14, respectively, one of which is folded or folded Aluminum foil 13 with two flat aluminum foils 14 Flow channels 15 forms the rotating body 3 and that Push the aluminum wheel through in the direction of flow.

Die Oberflächen der Aluminiumfolien 13, 14 sind zu einer kapillarischen Struktur aufgerauht, wodurch die Luftfeuchtigkeit besser übertragbar ist. Des weiteren sind diese, die Strömungskanäle 15 ausbildenden Oberflächen der Aluminiumfolien 13, 14 mit einer Lithiumchloridlösung behandelt worden, die 10 Vol.-% Lithiumchlorid in Wasser enthält. Als Lithiumchlorid wird inhibiertes Lithiumchlorid verwendet, dessen Inhibierungsmittel auf der Basis chromatierter Stoffe hergestellt sind.The surfaces of the aluminum foils 13, 14 are one capillary structure roughened, causing humidity is more transferable. Furthermore, these are the flow channels 15 forming surfaces of the aluminum foils 13, 14 treated with a lithium chloride solution which contains 10 vol .-% lithium chloride in water. As Inhibited lithium chloride is used, its inhibitor based on chromated substances are made.

Aus der in Figur 3 gezeigten Prinzipdarstellung von Strömungskanälen 15, wie sie in dem in Figur 2 in Einzelheiten gezeigten Drehkörper 3 vorgesehen sind, geht hervor, daß im dargestellten Ausführungsbeispiel die Knickung bzw. Faltung der geknickten bzw. gefalteten Folien 14 in der Weise erfolgt, daß die Strömungskanäle 15 einen dreieckigen Strömungsquerschnitt aufweisen, der radial einwärts und radial auswärts jeweils von einer glattzylindrischen Aluminiumfolie 13 begrenzt ist.From the basic illustration of Flow channels 15, as in the in Figure 2 in detail shown rotating body 3 are provided shows that in the illustrated embodiment Kinking or folding the kinked or folded Foils 14 are made in such a way that the flow channels 15 have a triangular flow cross section, the radially inward and radially outward of one each smooth cylindrical aluminum foil 13 is limited.

Da der Strömungsquerschnitt jedes Strömungskanals 15 im dargestellten Ausführungsbeispiel drei spitz zulaufende Ecken 16, 17, 18 aufweist, wird aufgrund der in diesen Ecken 16, 17, 18 der Strömungskanäle 15 entstehenden Turbulenzen verhindert, daß eine kapillare Verengung der Strömungskanäle 15 auftritt; an den Wandungen der Kanäle 15 besteht somit keine die Wärmetauscheigenschaften beeinträchtigende isolierende Grenzschicht, die bei laminaren Strömungsverhältnissen auftreten könnte. Aufgrund der in den Ecken 16, 17, 18 entstehenden Turbulenzen geraten somit mehr Luftpartikel in unmittelbaren Kontakt mit den durch die Aluminiumfolien 13, 14 gebildeten Wandungen der Strömungskanäle 15.Since the flow cross section of each flow channel 15 in the illustrated embodiment three tapering Corners 16, 17, 18 is due to the in these Corners 16, 17, 18 of the flow channels 15 arise Turbulence prevents a capillary narrowing of the Flow channels 15 occurs; on the walls of the channels 15 there is therefore no impairment of the heat exchange properties insulating boundary layer which at laminar flow conditions could occur. Due to the turbulence arising in the corners 16, 17, 18 thus more air particles get into immediate Contact with those through the aluminum foils 13, 14 formed walls of the flow channels 15.

Durch diese im dargestellten Ausführungsbeispiel dreieckige Ausgestaltung des Strömungsquerschnitts der Strömungskanäle 15 wird eine erhebliche Erhöhung des Wirkungsgrads des Rotorwärmetauschers 1 bewirkt. Es sei darauf hingewiesen, daß anstelle der dreieckigen Ausgestaltung des Strömungsquerschnitts der Strömungskanäle 15 auch eine andere mehreckige Ausgestaltung möglich ist, wobei dann die Knickung bzw. Faltung der geknickten bzw. gefalteten Aluminiumfolien 14 entsprechend gestaltet wird.Through this triangular in the illustrated embodiment Design of the flow cross section of the Flow channels 15 will significantly increase efficiency of the rotor heat exchanger 1 causes. It is noted that instead of the triangular shape the flow cross section of the flow channels 15 also another polygonal design is possible, in which case the buckling or folding of the kinked or folded aluminum foils 14 accordingly is designed.

Claims (6)

Rotorwärmetauscher mit einem Drehkörper (3), der drehbar gelagert ist, dessen Stirnfläche (6, 7) einen Anström- (6) und einen Abströmsektor (7) aufweist, die der Drehkörper (3) bei einer Drehung durchläuft, und der aus einer Werkstoffmatrix (12) ausgebildet ist, die aus Folien (13, 14) besteht, zwischen denen den Drehkörper (3) axial durchsetzende Strömungskanäle (15) gebildet sind, dadurch gekennzeichnet, daß die Strömungskanäle (15) einen drei- oder mehreckigen Strömungsquerschnitt aufweisen.Rotor heat exchanger with a rotating body (3) which is rotatably mounted, the end face (6, 7) of which has an inflow (6) and an outflow sector (7) through which the rotating body (3) passes during a rotation, and which consists of a material matrix (12), which consists of foils (13, 14), between which flow passages (15) axially penetrating the rotating body (3) are formed, characterized in that the flow passages (15) have a triangular or polygonal flow cross section. Rotorwärmetauscher nach Anspruch 1, bei dem die Radialabmessung der Strömungskanäle (15) zwischen 1 mm und 3 mm liegt.A rotor heat exchanger according to claim 1, wherein the radial dimension the flow channels (15) between 1 mm and 3 mm lies. Rotorwärmetauscher nach Anspruch 1 oder 2, bei dem die Folien als Aluminiumfolien (13, 14) und die Werkstoffmatrix als Aluminiummatrix (12) ausgebildet sind bzw. ist.Rotor heat exchanger according to claim 1 or 2, wherein the Foils as aluminum foils (13, 14) and the material matrix are designed as an aluminum matrix (12) or is. Rotorwärmetauscher nach einem der Ansprüche 1 bis 3, bei dem die Folien (13, 14) auf ihren die Strömungskanäle (15) ausbildenden und begrenzenden Oberflächen zu einer kapillarischen Struktur aufgerauht sind und diese Oberflächen mit inhibiertem Lithiumchlorid beschichtet sind.Rotor heat exchanger according to one of claims 1 to 3, in which the foils (13, 14) have the flow channels on them (15) forming and delimiting surfaces into one capillary structure are roughened and these surfaces are coated with inhibited lithium chloride. Rotorwärmetauscher nach Anspruch 4, bei dem die dem Lithiumchlorid beigegebenen Inhibierungsmittel auf der Basis chromatierter Stoffe hergestellt sind.Rotor heat exchanger according to claim 4, wherein the Inhibitor added lithium chloride on the Chromated fabrics are manufactured. Rotorwärmetauscher nach Anspruch 4 oder 5, bei dem zur Beschichtung der Oberflächen eine 6 - 15 Vol.-%ige, vorzugsweise 10 Vol.-%ige Lithiumchloridlösung in Wasser verwendet wird.Rotor heat exchanger according to claim 4 or 5, in which Coating the surfaces a 6 - 15 vol .-%, preferably 10% by volume lithium chloride solution in water is used.
EP01114938A 2001-06-20 2001-06-20 Rotary heat exchanger Withdrawn EP1271086A1 (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3450862A1 (en) 2017-08-29 2019-03-06 Emil Grüniger Device for a building, in particular an indoor swimming pool, for exchanging moisture and heat

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB676573A (en) * 1949-06-30 1952-07-30 Burmeister & Wains Mot Mask Improvements in or relating to rotary heat exchangers
US4189330A (en) * 1975-01-30 1980-02-19 Ab Svenska Flaktfabriken Method for making humidity and heat exchanger apparatus
DE3011210A1 (en) * 1980-03-22 1981-10-01 Wilhelm 7486 Scheer Häberle Multiple-passage heat accumulator - comprises alternate strips with different corrugations assembled together
DE3310002A1 (en) * 1983-03-19 1985-04-11 Karl Dipl.-Ing. Moser (TU), 7760 Radolfzell Rotating heat exchanger
DE4317882A1 (en) * 1993-05-28 1994-12-01 Klingenburg Gmbh Rotary heat exchanger
DE19512351C1 (en) * 1995-04-01 1996-11-14 Poehlmann Klaus Ernst Honeycomb block for heat exchangers

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB676573A (en) * 1949-06-30 1952-07-30 Burmeister & Wains Mot Mask Improvements in or relating to rotary heat exchangers
US4189330A (en) * 1975-01-30 1980-02-19 Ab Svenska Flaktfabriken Method for making humidity and heat exchanger apparatus
DE3011210A1 (en) * 1980-03-22 1981-10-01 Wilhelm 7486 Scheer Häberle Multiple-passage heat accumulator - comprises alternate strips with different corrugations assembled together
DE3310002A1 (en) * 1983-03-19 1985-04-11 Karl Dipl.-Ing. Moser (TU), 7760 Radolfzell Rotating heat exchanger
DE4317882A1 (en) * 1993-05-28 1994-12-01 Klingenburg Gmbh Rotary heat exchanger
DE19512351C1 (en) * 1995-04-01 1996-11-14 Poehlmann Klaus Ernst Honeycomb block for heat exchangers

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3450862A1 (en) 2017-08-29 2019-03-06 Emil Grüniger Device for a building, in particular an indoor swimming pool, for exchanging moisture and heat

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