EP1008815A1 - Heat exchanger for a ventilation system - Google Patents

Heat exchanger for a ventilation system Download PDF

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Publication number
EP1008815A1
EP1008815A1 EP99204169A EP99204169A EP1008815A1 EP 1008815 A1 EP1008815 A1 EP 1008815A1 EP 99204169 A EP99204169 A EP 99204169A EP 99204169 A EP99204169 A EP 99204169A EP 1008815 A1 EP1008815 A1 EP 1008815A1
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EP
European Patent Office
Prior art keywords
heat exchanger
fabric
exchanger according
heat
ventilation system
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Application number
EP99204169A
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German (de)
French (fr)
Inventor
Hans Rudolf Kunz
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Individual
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Individual
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Publication of EP1008815A1 publication Critical patent/EP1008815A1/en
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    • 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
    • F24F3/147—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 with both heat and humidity transfer between supplied and exhausted air
    • 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
    • F28D9/00—Heat-exchange apparatus having stationary plate-like or laminated conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
    • F28D9/0025—Heat-exchange apparatus having stationary plate-like or laminated conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits being formed by zig-zag bend plates
    • 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
    • F24F2003/1435—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 comprising semi-permeable membrane

Definitions

  • the invention relates to a heat exchanger for a ventilation system according to the Preamble of claim 1.
  • Heat exchangers for ventilation systems are preferably made of aluminum. Plate heat exchangers or cross-flow heat exchangers are manufactured, in which the exhaust air is guided along the plates and warmed them up become. The supply air is also routed along the aluminum plates, however on the opposite side so that it is heated.
  • the Exchange depends on the size of the exchange area and the amount of air and has a relatively high return. The warmed supply air is deionized due to the lower temperatures and the correspondingly low air humidity. This disadvantage can occur, for example, with a rotating air heat exchanger fixed, but no clear separation between the removed Exhaust air and the supply air can be made more.
  • the Heat exchangers described above are because of the relatively complex arrangement and the materials used are relatively expensive.
  • the present invention is based on the object of a heat exchanger specify that no longer has the disadvantages of the known and also on of a particularly simple type and accordingly inexpensive is.
  • the heat exchanger according to the invention has the great advantage that in addition to one Heat exchange with high efficiency also the air humidity Exhaust air is passed to the supply air. Due to the moisture-exchanging, non-metallic Materials also no longer deionize the supply air.
  • the single figure shows a heat exchanger 1 with a meandering shape Exchange surface 2, which consists of several parallel frames 3, on which a moisture-exchanging fabric 4 is stretched.
  • the frames 3 are for example made of a thin metal wire and the exchange surface on one 2 surrounding support frame 5 attached.
  • the support frame 5 can for example from a heat-insulating material such as expanded cork consist.
  • a moisture-exchanging fabric 4 has been found in particular high-strength olefin spunbond made of cross-linked, high-density polyethylene fibers (known under the name HDPE) proven. Such a fabric 4 draws is characterized by the fact that it is airtight and watertight, but very good vapor permeability has and thus the humidity of the heat exchanges and A large part of the supply air is transferred.
  • Other fabrics such as polyester in one miniaturized ribbed velvet weave or ceramic fiber fabric with one appropriate coating come into question.
  • the one-piece fabric 4 is in parallel tracks 6 stretched into a meandering structure on the frame 3.
  • the long sides 7 of the fabric 4 is also attached to the supporting frame 5 in an airtight and watertight manner, so that a direct exchange of the exhaust air 8 and the supply air 9 is effectively prevented is.
  • the total area of the heat exchanger 1 is therefore very large, so that guarantees a very good and effective heat and moisture exchange is.
  • the temperature gradient can vary between exhaust air 8 and supply air 9 more or less balanced become.
  • the heat exchanger 1 with a fabric 4 of the type described above can be produced much cheaper can than the conventional heat exchanger with aluminum plates. Also the energy used in manufacturing is significantly lower. Furthermore, the Maintenance and disposal of the heat exchanger 1 significantly easier and more environmentally friendly. The low weight is another advantage of the one presented here Heat exchanger 1.

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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 heat exchanger (1) with an exchange element (4) separating warm exit air (8) from the cold entry air (9) is characterized by the fact that this exchange element is made of a nonmetal, moisture exchanging material.

Description

Die Erfindung betrifft einen Wärmetauscher für eine Lüftungsanlage nach dem Oberbegriff des Patentanspruchs 1.The invention relates to a heat exchanger for a ventilation system according to the Preamble of claim 1.

Wärmetauscher für Lüftungsanlagen werden vorzugsweise aus Aluminium hergestellt. Dabei werden Plattenwärmetauscher oder Kreuzstromwärmetauscher hergestellt, bei welchen die Abluft an den Platten entlang geführt wird und diese aufgewärmt werden. Die Zuluft wird ebenfalls an den Aluminium-Platten entlang geführt, jedoch auf der gegenüberliegenden Seite, so dass diese erwärmt wird. Der Austausch ist von der Grösse der Austauschfläche und der Luftmenge abhängig und kann einr elativ hohes Rendement vorweisen. Die aufgewärmte Zuluft wird wegen der tieferen Temperaturen und der entsprechend tiefen Luftfeuchte entionisiert. Dieser Nachteil kann beispielsweise mit einem rotierenden Luftwärmetauscher behoben werden, wobei jedoch keine klare Trennung zwischen der abgeführten Abluft und der zugeführten Zuluft mehr vorgenommen werden kann. Die oben beschriebenen Wärmetauscher sind wegen der relativ komplexen Anordnung und der verwendeten Materialien verhältnismässig teuer.Heat exchangers for ventilation systems are preferably made of aluminum. Plate heat exchangers or cross-flow heat exchangers are manufactured, in which the exhaust air is guided along the plates and warmed them up become. The supply air is also routed along the aluminum plates, however on the opposite side so that it is heated. The Exchange depends on the size of the exchange area and the amount of air and has a relatively high return. The warmed supply air is deionized due to the lower temperatures and the correspondingly low air humidity. This disadvantage can occur, for example, with a rotating air heat exchanger fixed, but no clear separation between the removed Exhaust air and the supply air can be made more. The Heat exchangers described above are because of the relatively complex arrangement and the materials used are relatively expensive.

Der vorliegenden Erfindung liegt nun die Aufgabe zugrunde, ein Wärmetauscher anzugeben, der die Nachteile der bekannten nicht mehr aufweist und zudem auf einer besonders einfachen Art herstellbar und dementsprechend kostengünstig ist.The present invention is based on the object of a heat exchanger specify that no longer has the disadvantages of the known and also on of a particularly simple type and accordingly inexpensive is.

Diese Aufgabe wird durch ein Wärmetauscher für eine Lüftungsanlage mit den Merkmalen des Patentanspruchs 1 gelöst.This task is performed by a heat exchanger for a ventilation system with the Features of claim 1 solved.

Der erfindungsgemässe Wärmetauscher hat den grossen Vorteil, dass nebst eines Wärmeaustausches mit einem hohen Wirkungsgrad auch die Luftfeuchte der Abluft an die Zuluft übergeben wird. Durch die feuchte-austauschenden, nicht-metallischen Materialien findet ferner keine Entionisierung der Zuluft mehr statt. The heat exchanger according to the invention has the great advantage that in addition to one Heat exchange with high efficiency also the air humidity Exhaust air is passed to the supply air. Due to the moisture-exchanging, non-metallic Materials also no longer deionize the supply air.

Weitere Vorteile der Erfindung folgen aus den abhängigen Patentansprüchen und aus der nachfolgenden Beschreibung, in welcher die Erfindung anhand eines in den schematischen Zeichnungen dargestellten Ausführungsbeispieles näher erläutert wird.Further advantages of the invention follow from the dependent claims and from the following description, in which the invention is based on a the schematic drawings illustrated embodiment explained in more detail becomes.

Dabei zeigt die einzige Figur einen Wärmetauscher 1 mit einer mäanderförmigen Austauschfläche 2, die aus mehreren parallelen Rahmen 3 besteht, auf welchen ein feuchte-austauschendes Gewebe 4 aufgespannt ist. Die Rahmen 3 sind beispielsweise aus einem dünnen Metalldraht gefertigt und an einem die Austauschfläche 2 umgebenden Tragrahmen 5 befestigt. Der Tragrahmen 5 kann beispielsweise aus einem wärmedämmenden Material wie expandiertem Kork bestehen. Als feuchte-austauschende Gewebe 4 hat sich insbesondere ein hochfesten Olefin-Spinnvlies aus vernetzten hochverdichteten Polyäthylen-Fasern (unter der Bezeichnung HDPE bekannt) bewährt. Ein solches Gewebe 4 zeichnet sich dadurch aus, dass es luft- und wasserdicht ist, jedoch eine sehr gute dampfdurchlässigkeit hat und somit die Feuchte der Wärme auszutauschenden Ab- und Zuluft zu einem grossen Teil überträgt. Auch andere Gewebe wie Polyester in einer miniaturisierten Rippsamt-Webart oder auch Keramikfasergewebe mit einer entsprechenden Beschichtung kommen in Frage. Andererseits lassen sich Natur- oder Kunstfasergewebe mit einer geeigneten Polyurethanbeschichtung hydrophil, d.h. dampfdurchlässig, machen.The single figure shows a heat exchanger 1 with a meandering shape Exchange surface 2, which consists of several parallel frames 3, on which a moisture-exchanging fabric 4 is stretched. The frames 3 are for example made of a thin metal wire and the exchange surface on one 2 surrounding support frame 5 attached. The support frame 5 can for example from a heat-insulating material such as expanded cork consist. A moisture-exchanging fabric 4 has been found in particular high-strength olefin spunbond made of cross-linked, high-density polyethylene fibers (known under the name HDPE) proven. Such a fabric 4 draws is characterized by the fact that it is airtight and watertight, but very good vapor permeability has and thus the humidity of the heat exchanges and A large part of the supply air is transferred. Other fabrics such as polyester in one miniaturized ribbed velvet weave or ceramic fiber fabric with one appropriate coating come into question. On the other hand, nature or Synthetic fiber fabric with a suitable polyurethane coating hydrophilic, i.e. breathable, make.

Wie in der Figur dargestellt ist das einstückige Gewebe 4 in parallelen Bahnen 6 zu einem mäanderförmigen Gebilde auf den Rahmen 3 aufgespannt. Die Längsseiten 7 des Gewebes 4 ist ferner luft- und wasserdicht am Tragrahmen 5 befestigt, so dass ein direkter Austausch der Abluft 8 und der Zuluft 9 wirksam unterbunden ist. Die gesamte Fläche des Wärmetauschers 1 ist damit sehr gross, so dass ein sehr guter und effektiver Wärme- und Feuchte-Austausch gewährleistet ist. Abhängig von der Verweildauer im Wärmetauscher 1 kann das Temperaturgefälle zwischen der Abluft 8 und der Zuluft 9 mehr oder weniger ausgeglichen werden.As shown in the figure, the one-piece fabric 4 is in parallel tracks 6 stretched into a meandering structure on the frame 3. The long sides 7 of the fabric 4 is also attached to the supporting frame 5 in an airtight and watertight manner, so that a direct exchange of the exhaust air 8 and the supply air 9 is effectively prevented is. The total area of the heat exchanger 1 is therefore very large, so that guarantees a very good and effective heat and moisture exchange is. Depending on the length of time in heat exchanger 1, the temperature gradient can vary between exhaust air 8 and supply air 9 more or less balanced become.

Es versteht sich für den Fachmann, dass der Wärmetauscher 1 mit einem Gewebe 4 der oben beschriebenen Art wesentlich kostengünstiger hergestellt werden kann als die herkömmlichen Wärmetauscher mit Aluminiumplatten. Auch die für die Herstellung aufgewendete Energie ist erheblich geringer. Ferner ist die Wartung und Entsorgung der Wärmetauscher 1 bedeutend einfacher und umweltfreundlicher. Das geringe Gewicht ist ein weiterer Vorteil des hier vorgestellten Wärmetauschers 1.It is understood by those skilled in the art that the heat exchanger 1 with a fabric 4 of the type described above can be produced much cheaper can than the conventional heat exchanger with aluminum plates. Also the energy used in manufacturing is significantly lower. Furthermore, the Maintenance and disposal of the heat exchanger 1 significantly easier and more environmentally friendly. The low weight is another advantage of the one presented here Heat exchanger 1.

Claims (7)

Wärmetauscher (1) für eine Lüftungsanlage mit Austauschflächen, längs welcher auf der einen Seite die warme Abluft (8) und auf der anderen Seite die kalte Zuluft (9) geführt wird, dadurch gekennzeichnet, dass die Austauschflächen (4) aus einem nicht-metallischen, feuchte-austauschenden Material hergestellt sind.Heat exchanger (1) for a ventilation system with exchange surfaces, lengthways which on one side has the warm exhaust air (8) and on the other side the cold supply air (9) is guided, characterized in that the exchange surfaces (4) from a non-metallic, moisture-exchanging Material are made. Wärmetauscher nach Anspruch 1, dadurch gekennzeichnet, dass das nichtmetallische, wärme-austauschenden Material aus einem wasserdichten, dampfdurchlässigen Gewebe (4) besteht.Heat exchanger according to claim 1, characterized in that the non-metallic, heat-exchanging material made of a waterproof, vapor-permeable fabric (4). Wärmetauscher nach Anspruch 2, dadurch gekennzeichnet, dass das Gewebe (4) aus einem hochfesten Olefin-Spinnvlies besteht.Heat exchanger according to claim 2, characterized in that the fabric (4) consists of a high-strength olefin spunbond. Wärmetauscher nach Anspruch 3, dadurch gekennzeichnet, dass das Gewebe (4) aus venetzten hochverdichteten Polyäthylen-Fasern besteht.Heat exchanger according to claim 3, characterized in that the fabric (4) consists of cross-linked, high-density polyethylene fibers. Wärmetauscher nach einem der Ansprüche 2 bis 4, dadurch gekennzeichnet, dass das Gewebe (4) auf einem Rahmen (3) aufgespannt ist.Heat exchanger according to one of claims 2 to 4, characterized in that the fabric (4) is stretched on a frame (3). Wärmetauscher nach Anspruch 5, dadurch gekennzeichnet, dass das Gewebe (4) auf mehreren Rahmen (3) zu einem mäanderförmigen Gebilde aufgespannt ist.Heat exchanger according to claim 5, characterized in that the fabric (4) stretched over several frames (3) to form a meandering structure is. Wärmetauscher nach Anspruch 5 oder 6, dadurch gekennzeichnet, dass die Rahmen (3) auf einem Tragrahmen (5) aus einem wärmedämmenden Material, vorzugsweise hochverdichtetem Kork, befestigt sind.Heat exchanger according to claim 5 or 6, characterized in that the Frame (3) on a support frame (5) made of a heat-insulating material, preferably high density cork are attached.
EP99204169A 1998-12-08 1999-12-07 Heat exchanger for a ventilation system Withdrawn EP1008815A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH243698 1998-12-08
CH243698 1998-12-08

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EP1008815A1 true EP1008815A1 (en) 2000-06-14

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102735083A (en) * 2012-07-25 2012-10-17 黄学明 Plate type heat exchanger

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4040804A (en) * 1975-05-23 1977-08-09 Halm Instrument Co., Inc. Heat and moisture exchanger
DE2813008A1 (en) * 1978-03-23 1979-09-27 Karl Dipl Ing Assmann Window surround ventilation unit - has inlet and outlet air flow chambers forming heat and humidity exchange system
EP0012491A1 (en) * 1978-12-14 1980-06-25 Teijin Limited Heat-and-moisture exchanger, and ventilating device and air-conditioner including such heat-and-moisture exchanger
EP0029573A2 (en) * 1979-11-24 1981-06-03 Uwe Klix Heat exchangers, their formation and arrangement in an installation for heat recovery by exchange of air, in particular for dwelling houses and comparable lay-outs
EP0661502A2 (en) * 1993-11-09 1995-07-05 Japan Gore-Tex, Inc. A heat and moisture exchange device

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4040804A (en) * 1975-05-23 1977-08-09 Halm Instrument Co., Inc. Heat and moisture exchanger
DE2813008A1 (en) * 1978-03-23 1979-09-27 Karl Dipl Ing Assmann Window surround ventilation unit - has inlet and outlet air flow chambers forming heat and humidity exchange system
EP0012491A1 (en) * 1978-12-14 1980-06-25 Teijin Limited Heat-and-moisture exchanger, and ventilating device and air-conditioner including such heat-and-moisture exchanger
EP0029573A2 (en) * 1979-11-24 1981-06-03 Uwe Klix Heat exchangers, their formation and arrangement in an installation for heat recovery by exchange of air, in particular for dwelling houses and comparable lay-outs
EP0661502A2 (en) * 1993-11-09 1995-07-05 Japan Gore-Tex, Inc. A heat and moisture exchange device

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102735083A (en) * 2012-07-25 2012-10-17 黄学明 Plate type heat exchanger

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