WO2007025506A1 - Tube heat exchanger - Google Patents

Tube heat exchanger Download PDF

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Publication number
WO2007025506A1
WO2007025506A1 PCT/DE2006/001451 DE2006001451W WO2007025506A1 WO 2007025506 A1 WO2007025506 A1 WO 2007025506A1 DE 2006001451 W DE2006001451 W DE 2006001451W WO 2007025506 A1 WO2007025506 A1 WO 2007025506A1
Authority
WO
WIPO (PCT)
Prior art keywords
tubes
heat exchanger
air
tube bundle
supply air
Prior art date
Application number
PCT/DE2006/001451
Other languages
German (de)
French (fr)
Inventor
Gottfried Baum
Heinrich Zenzes
Original Assignee
A. Monforts Textilmaschinen Gmbh & Co. Kg
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by A. Monforts Textilmaschinen Gmbh & Co. Kg filed Critical A. Monforts Textilmaschinen Gmbh & Co. Kg
Publication of WO2007025506A1 publication Critical patent/WO2007025506A1/en

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F12/00—Use of energy recovery systems in air conditioning, ventilation or screening
    • F24F12/001—Use of energy recovery systems in air conditioning, ventilation or screening with heat-exchange between supplied and exhausted air
    • F24F12/006—Use of energy recovery systems in air conditioning, ventilation or screening with heat-exchange between supplied and exhausted air using an air-to-air heat exchanger
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26—DRYING
    • F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B23/00—Heating arrangements
    • F26B23/001—Heating arrangements using waste heat
    • F26B23/002—Heating arrangements using waste heat recovered from dryer exhaust gases
    • 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
    • F28D7/00—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
    • F28D7/16—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits being arranged in parallel spaced relation
    • F28D7/1615—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits being arranged in parallel spaced relation the conduits being inside a casing and extending at an angle to the longitudinal axis of the casing; the conduits crossing the conduit for the other heat exchange medium
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F9/00—Casings; Header boxes; Auxiliary supports for elements; Auxiliary members within casings
    • F28F9/02—Header boxes; End plates
    • F28F9/04—Arrangements for sealing elements into header boxes or end plates
    • F28F9/06—Arrangements for sealing elements into header boxes or end plates by dismountable joints
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F2280/00—Mounting arrangements; Arrangements for facilitating assembling or disassembling of heat exchanger parts
    • F28F2280/02—Removable elements
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
    • Y02B30/56—Heat recovery units
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
    • Y02P70/10—Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working

Definitions

  • the invention relates to a tube heat exchanger for heating fresh air to heated exhaust air, wherein the exhaust air is to be passed through a plurality of tubes of a tube bundle and the outside fresh air around the tubes by a supply air channel receiving the tube bundle.
  • the tube heat exchanger is provided for heat recovery on a textile equipment machine, in particular on a tenter, in which a textile fabric web is spread and transverse tension continuously passed through a heated treatment room.
  • the invention further relates to a method for operating the tube heat exchanger.
  • the heated exhaust air which can be discharged from a plant, generally contains dirt particles, which - depending on the quality - more or less quickly attach to the inner walls of the tubes of the tube bundle, so that the heat transfer between the exhaust air flowing inside the pipes and the Outside the pipes flowing fresh air is gradually getting worse. In extreme cases, the exhaust pipes can even clog.
  • the fresh air which is generally sucked in from the environment of the respective system, may contain dust, which settles in the supply air duct of the heat exchanger on the outside around the pipes to be flowed through by the exhaust air.
  • the heat transfer between the exhaust air and the fresh air is also gradually deteriorated thereby. Therefore, tube heat exchangers - depending on the type of exhaust air and the dirt contained therein - cleaned at predetermined intervals.
  • a cleaning device for flues of heat exchangers is described in EP 09 67 452 A2.
  • a cleaning element is provided, which is inserted into the exhaust pipes.
  • the individual tubes can be mechanically cleaned one after the other.
  • DE 23 34244 B2 and WO 02/059538 A1 disclose similar devices, the plastering of the exhaust pipes However, it is done in a hydrodynamic way.
  • the known cleaning methods require the use of a complicated technique, their application is laborious, a separate cleaning of the supply air duct is not mentioned.
  • the invention has for its object to provide a tube heat exchanger, due to its own design, without consuming pipe cleaning systems both the inside of the pipes and the supply air duct around the exhaust pipes around, so their fresh air side to run in a simple manner and without major breaks in the overall machine allowed.
  • the solution according to the invention is specified in the characterizing part of patent claim 1.
  • the solution is for the heat exchanger mentioned above, in which the exhaust air through a plurality of tubes of a tube bundle and the fresh air outside around the pipes to be passed through a pipe or bundle receiving supply air duct, preferably in that the tubes of the respective tube bundle with their longitudinal ends are releasably inserted into holes each a perforated plate, which form wall parts of a closed except for a Zu povertyeinlledge and -auslleaned the Zuluftkanals space.
  • the tube bundle is installed together with the perforated plates in total releasably in the supply air duct.
  • the supply air duct can be formed substantially like a cuboid, which has an opening for inserting or pulling out a tube bundle and is equipped with inlet and outlet openings for exhaust air and supply air.
  • the respective pipes to be cleaned of the tube bundle or even whole tube bundles for cleaning purposes to be removed from the supply air duct of the heat exchanger and fed to a cleaning system in which the plastering can be done without interference by surrounding the heat exchanger machine parts.
  • a particular advantage of the invention is that to use during the cleaning of individual tubes or tube bundles replacement tubes or tube bundles in the heat exchanger are so that the operation of the heat exchanger is practically not interrupted. In this way, not only the heat exchanger can continue to run substantially continuously, the cleaning system can work in continuous operation; It can even be assigned to several heat exchangers.
  • the exhaust air pressure within the tubes should preferably be set smaller than the supply air pressure in the supply air duct surrounding the tubes.
  • the supply air duct can be kept clean or clean according to the invention. After pulling out one or more tubes from a tube bundle or a whole tube bundle itself, the space around the tubes around, so the supply air duct in which accumulates dust over time, in the simplest way, for example with the help of a vacuum cleaner to be cleaned.
  • the heat exchanger is used for warming fresh air 2 to heated exhaust air 3.
  • the exhaust air 3 flows in the direction of the arrow shown by a plurality of tubes 4, which may be combined to form a tube bundle 5. It passes on in the drawn flow direction to an exhaust outlet 6.
  • the fresh air 2 is a fresh air inlet 7 in the space around the outer sides of the tubes 4 around, that is the so-called supply air duct 8, and elsewhere after heating to the heated by the exhaust air 3 pipes 4 out in the illustrated arrow direction from a Zu Kunststoffauslledge 9.
  • the individual tubes 3 of the tube bundle ' 4 with their longitudinal ends 10, 11 are detachably inserted into holes each of a perforated plate 12, 13.
  • the perforated plates 12 and 13 form wall parts of the closed up to the Zu povertyeinlella 7 and the Zu povertyausldivider 9 space, the supply air duct 8.
  • the front wall is omitted, so that the interior of the supply air duct 8 with the pipes 4 is graphically represented.

Landscapes

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

Abstract

The invention describes a tube heat exchanger for heating fresh air by means of heated discharge air. The discharge air is to be conducted through a plurality of tubes of a tube bundle, and the fresh air is to be conducted around the outside of the tubes through a supply air duct which accommodates the tube bundle. In order to facilitate cleaning of the tubes and of the space around the tubes, according to the invention, the tubes of the tube bundle are inserted in a detachable fashion with their longitudinal ends into holes of in each case one perforated plate, which perforated plates form wall parts of a space which is closed off with the exception of a supply air inlet and a supply air outlet.

Description

„Rohrwärmetauscher" Beschreibung:"Tube heat exchanger" Description:
Die Erfindung betrifft einen Rohrwärmetauscher zum Aufwärmen von Frischluft an erhitzter Abluft, wobei die Abluft durch eine Vielzahl von Rohren eines Rohrbündels und die Frischluft außen um die Rohre herum durch ein das Rohrbündel aufnehmenden Zuluftkanal zu leiten ist. Vorzugsweise ist der Rohrwärmetauscher vorgesehen zur Wärmerückgewinnung an einer Textilausrüstungsmaschine, insbesondere an einem Spannrahmen, in welchem eine textile Stoffbahn ausgebreitet und quergespannt kontinuierlich durch einen erhitzten Behandlungsraum geleitet wird. Die Erfindung betrifft ferner ein Verfahren zum Betrieb des Rohrwärmetauschers.The invention relates to a tube heat exchanger for heating fresh air to heated exhaust air, wherein the exhaust air is to be passed through a plurality of tubes of a tube bundle and the outside fresh air around the tubes by a supply air channel receiving the tube bundle. Preferably, the tube heat exchanger is provided for heat recovery on a textile equipment machine, in particular on a tenter, in which a textile fabric web is spread and transverse tension continuously passed through a heated treatment room. The invention further relates to a method for operating the tube heat exchanger.
Die erhitzte Abluft, die man aus einer Anlage ausströmen läßt, enthält im Allgemeinen Schmutzteile, die sich - je nach Qualität - mehr oder weniger schnell an den Innenwänden der Rohre des Rohrbündels ansetzen, so daß der Wärmeübergang zwischen der innerhalb der Rohre strömenden Abluft und der außerhalb der Rohre strömenden Frischluft allmählich schlechter wird. In Extremfällen können die Abluftrohre sogar verstopfen. Die Frischluft, die im Allgemeinen aus der Umgebung der jeweiligen Anlage angesaugt wird, kann Staub enthalten, der sich im Zuluftkanal des Wärmetauschers außen um die von der Abluft zu durchströmenden Rohre festsetzt. Gegebenenfalls wird auch dadurch der Wärmeübergang zwischen der Abluft und der Frischluft allmählich verschlechtert. Daher werden Rohrwärmetauscher - abhängig von der Art der Abluft und dem darin enthaltenen Schmutz - in vorgegebenen Zeitabständen gereinigt.The heated exhaust air, which can be discharged from a plant, generally contains dirt particles, which - depending on the quality - more or less quickly attach to the inner walls of the tubes of the tube bundle, so that the heat transfer between the exhaust air flowing inside the pipes and the Outside the pipes flowing fresh air is gradually getting worse. In extreme cases, the exhaust pipes can even clog. The fresh air, which is generally sucked in from the environment of the respective system, may contain dust, which settles in the supply air duct of the heat exchanger on the outside around the pipes to be flowed through by the exhaust air. Optionally, the heat transfer between the exhaust air and the fresh air is also gradually deteriorated thereby. Therefore, tube heat exchangers - depending on the type of exhaust air and the dirt contained therein - cleaned at predetermined intervals.
Eine Reinigungsvorrichtung für Rauchgaszüge von Wärmetauschern wird in EP 09 67 452 A2 beschrieben. Im Bekannten wird ein Reinigungselement vorgesehen, welches in die Abluftrohre einschiebbar ist. Auf diese Weise können die einzelnen Rohre nacheinander mechanisch ausgeputzt werden. DE 23 34244 B2 und in WO 02/059538 A1 offenbaren ähnliche Vorrichtungen, das Ausputzen der Abgasrohre erfolgt jedoch auf hydrodynamische Weise. Die bekannten Reinigungsverfahren erfordern den Einsatz einer komplizierten Technik, ihre Anwendung ist arbeitsaufwendig, eine gesonderte Reinigung des Zuluftkanals wird nicht erwähnt.A cleaning device for flues of heat exchangers is described in EP 09 67 452 A2. In the known a cleaning element is provided, which is inserted into the exhaust pipes. In this way, the individual tubes can be mechanically cleaned one after the other. DE 23 34244 B2 and WO 02/059538 A1 disclose similar devices, the plastering of the exhaust pipes However, it is done in a hydrodynamic way. The known cleaning methods require the use of a complicated technique, their application is laborious, a separate cleaning of the supply air duct is not mentioned.
Der Erfindung liegt die Aufgabe zugrunde, einen Rohrwärmetauscher zu schaffen, der bedingt durch seine eigene Konstruktion, ohne aufwendige Rohrputzanlagen sowohl die Innenseite der Rohre als auch den Zuluftkanal um die Abluftrohre herum, also deren Frischluftseite, auf einfache Weise und ohne große Arbeitspausen der Gesamtmaschine auszuführen gestattet.The invention has for its object to provide a tube heat exchanger, due to its own design, without consuming pipe cleaning systems both the inside of the pipes and the supply air duct around the exhaust pipes around, so their fresh air side to run in a simple manner and without major breaks in the overall machine allowed.
Die erfindungsgemäße Lösung wird im Kennzeichen des Patentanspruchs 1 angegeben. Die Lösung besteht für den eingangs genannten Wärmetauscher, in welchem die Abluft durch eine Vielzahl von Rohren eines Rohrbündels und die Frischluft außen um die Rohre herum durch einen das oder die Rohrbündel aufnehmenden Zuluftkanal zu leiten ist, vorzugsweise darin, daß die Rohre des jeweiligen Rohrbündels mit ihren Längsenden lösbar in Löcher je einer Lochplatte gesteckt sind, welche Wandteile eines bis auf einen Zulufteinlaß und -auslaß des Zuluftkanals geschlossenen Raums bilden. Gemäß weiterer Erfindung wird das Rohrbündel zusammen mit den Lochplatten insgesamt lösbar in dem Zuluftkanal installiert. Der Zuluftkanal kann im Wesentlichen wie ein Quader ausgebildet werden, der eine Öffnung zum Einsetzen oder Herausziehen eines Rohrbündels besitzt sowie mit Ein- und Auslaßöffnungen für Abluft und Zuluft ausgestattet ist. Einige Verbesserungen und weitere Ausgestaltungen der Erfindung werden in den Unteransprüchen angegeben.The solution according to the invention is specified in the characterizing part of patent claim 1. The solution is for the heat exchanger mentioned above, in which the exhaust air through a plurality of tubes of a tube bundle and the fresh air outside around the pipes to be passed through a pipe or bundle receiving supply air duct, preferably in that the tubes of the respective tube bundle with their longitudinal ends are releasably inserted into holes each a perforated plate, which form wall parts of a closed except for a Zulufteinlaß and -auslaß the Zuluftkanals space. According to another invention, the tube bundle is installed together with the perforated plates in total releasably in the supply air duct. The supply air duct can be formed substantially like a cuboid, which has an opening for inserting or pulling out a tube bundle and is equipped with inlet and outlet openings for exhaust air and supply air. Some improvements and further developments of the invention are given in the subclaims.
Durch die Erfindung wird erreicht, daß die jeweils zu reinigenden Rohre des Rohrbündels oder sogar ganze Rohrbündel für Reinigungszwecke aus dem Zuluftkanal des Wärmetauschers herauszuziehen und einer Reinigungsanlage zuzuführen sind, in der das Ausputzen ohne Störung durch die den Wärmetauscher umgebenden Maschinenteile erfolgen kann. Ein besonderer Vorteil der Erfindung besteht darin, daß während des Reinigens einzelner Rohre oder Rohrbündel Ersatzrohre bzw. -rohrbündel in den Wärmetauscher einzusetzen sind, so daß der Betrieb des Wärmetauschers praktisch nicht unterbrochen wird. Auf diese Weise kann nicht nur der Wärmetauscher im Wesentlichen ununterbrochen weiterlaufen, auch die Reinigungsanlage kann im Dauerbetrieb arbeiten; sie kann sogar mehreren Wärmetauschern zugeordnet werden.By the invention it is achieved that the respective pipes to be cleaned of the tube bundle or even whole tube bundles for cleaning purposes to be removed from the supply air duct of the heat exchanger and fed to a cleaning system in which the plastering can be done without interference by surrounding the heat exchanger machine parts. A particular advantage of the invention is that to use during the cleaning of individual tubes or tube bundles replacement tubes or tube bundles in the heat exchanger are so that the operation of the heat exchanger is practically not interrupted. In this way, not only the heat exchanger can continue to run substantially continuously, the cleaning system can work in continuous operation; It can even be assigned to several heat exchangers.
Bei dem erfindungsgemäßen Rohrwärmetauscher soll vorzugsweise der Abluftdruck innerhalb der Rohre kleiner als der Zuluftdruck in dem die Rohre umgebenden Zuluftkanal eingestellt werden. Bei Beginn des Betriebs eines neu eingesetzten Rohrs bzw. Rohrbündels kann zwar (verschmutzte) Abluft durch die am Sitz der Rohre bzw. Rohrbündel verbleibenden Spalten in den Frischluftstrom gelangen, diese (unerwünschte) Verbindung wird aber nach kurzer Betriebsdauer durch die Abluftverschmutzung, die zu einer Selbstabdichtung der genannten Spalten führt, unterbrochen.In the tube heat exchanger according to the invention, the exhaust air pressure within the tubes should preferably be set smaller than the supply air pressure in the supply air duct surrounding the tubes. At the beginning of the operation of a newly inserted pipe or tube bundle (polluted) exhaust air can pass through the remaining at the seat of the pipes or tube bundles columns in the fresh air flow, this (undesired) connection but after a short period of operation by the exhaust air pollution, which to a Self-sealing of the mentioned columns leads, interrupted.
Auch der Zuluftkanal läßt sich erfindungsgemäß sauber halten bzw. reinigen. Nach Herausziehen eines oder mehrerer Rohre aus einem Rohrbündel oder eines ganzen Rohrbündels selbst kann der Raum um die Rohre herum, also der Zuluftkanal, in dem sich mit der Zeit Staub anzusammeln pflegt, auf einfachste Weise, beispielsweise mit Hilfe eines Staubsaugers, gereinigt werden.Also, the supply air duct can be kept clean or clean according to the invention. After pulling out one or more tubes from a tube bundle or a whole tube bundle itself, the space around the tubes around, so the supply air duct in which accumulates dust over time, in the simplest way, for example with the help of a vacuum cleaner to be cleaned.
Anhand der schematischen Darstellung eines Ausführungsbeispiels werden Einzelheiten der Erfindung erläutert.Details of the invention will be explained with reference to the schematic representation of an embodiment.
In der beiliegenden Zeichnung wird ein Teil eines insgesamt mit 1 bezeichneten Rohrwärmetauschers dargestellt. Der Wärmetauscher dient zum Aufwärmen von Frischluft 2 an erhitzter Abluft 3. Die Abluft 3 strömt in der dargestellten Pfeilrichtung durch eine Vielzahl von Rohren 4, die zu einem Rohrbündel 5 zusammengefaßt sein können. Sie gelangt weiter in der gezeichneten Strömungsrichtung zu einem Abluftauslaß 6. Die Frischluft 2 wird über einen Frischlufteinlaß 7 in den Raum um die Außenseiten der Rohre 4 herum, das ist der sogenannte Zuluftkanal 8, hinein und an anderer Stelle nach Erwärmung an den durch die Abluft 3 erhitzten Rohren 4 in der dargestellten Pfeilrichtung aus einem Zuluftauslaß 9 herausgeleitet.In the accompanying drawing, a part of a generally designated 1 pipe heat exchanger is shown. The heat exchanger is used for warming fresh air 2 to heated exhaust air 3. The exhaust air 3 flows in the direction of the arrow shown by a plurality of tubes 4, which may be combined to form a tube bundle 5. It passes on in the drawn flow direction to an exhaust outlet 6. The fresh air 2 is a fresh air inlet 7 in the space around the outer sides of the tubes 4 around, that is the so-called supply air duct 8, and elsewhere after heating to the heated by the exhaust air 3 pipes 4 out in the illustrated arrow direction from a Zuluftauslaß 9.
Erfindungsgemäß werden die einzelnen Rohre 3 des Rohrbündels' 4 mit ihren Längsenden 10, 11 lösbar in Löcher je einer Lochplatte 12, 13 gesteckt. Die Lochplatten 12 und 13 bilden Wandteile des bis auf den Zulufteinlaß 7 und den Zuluftauslaß 9 geschlossenen Raums, des Zuluftkanals 8. In der Zeichnung werden außer den Lochplatten 12, 13 nur die Hinterwand 14 und die Seitenwände 15, 16 des Zuluftkanals dargestellt. Die Vorderwand ist weggelassen, damit das Innere des Zuluftkanals 8 mit den Rohren 4 zeichnerisch darstellbar wird.According to the invention, the individual tubes 3 of the tube bundle ' 4 with their longitudinal ends 10, 11 are detachably inserted into holes each of a perforated plate 12, 13. The perforated plates 12 and 13 form wall parts of the closed up to the Zulufteinlaß 7 and the Zuluftauslaß 9 space, the supply air duct 8. In the drawing, except the perforated plates 12, 13, only the rear wall 14 and the side walls 15, 16 of the supply air duct shown. The front wall is omitted, so that the interior of the supply air duct 8 with the pipes 4 is graphically represented.
Bezugszeichenliste:LIST OF REFERENCE NUMBERS
RohrwärmetauscherTube heat exchanger
2 Frischluft2 fresh air
3 Abluft3 exhaust air
4 Rohre4 pipes
5 Rohrbündel5 tube bundles
R — AbluftauslaßR - exhaust outlet
7 Zulufteinlaß7 intake air inlet
8 Zuluftkanal8 supply air duct
9 = Zuluftauslaß9 = supply air outlet
10,11 = Längsenden10,11 = longitudinal ends
12,13 = Lochplatten12,13 = perforated plates
14 Hinterwand14 rear wall
15,16 = Seitenwände 15,16 = side walls

Claims

Patentansprüche: claims:
1. Rohrwärmetauscher (1) zum Aufwärmen von Frischluft (2) an erhitzter Abluft (3), wobei die Abluft (3) durch eine Vielzahl von Rohren (4) eines Rohrbündels (5) und die Frischluft (2) außen um die Rohre (4) herum durch einen das Rohrbündel (5) aufnehmenden Zuluftkanal (8) zu leiten ist, dadurch gekennzeichnet, daß die Rohre 83) des Rohrbündels (4) mit ihren Längsenden (10, 11 ) lösbar in Löcher je einer Lochplatte (12, 13) gesteckt sind, in welche Wandteile eines bis auf einen Zulufteinlaß (7) und Zuluftauslaß (9) geschlossenen Raums bilden.1. tube heat exchanger (1) for warming fresh air (2) to heated exhaust air (3), wherein the exhaust air (3) through a plurality of tubes (4) of a tube bundle (5) and the fresh air (2) outside the tubes ( 4) around a pipe bundle (5) receiving supply air duct (8) is to be guided, characterized in that the tubes 83) of the tube bundle (4) with their longitudinal ends (10, 11) releasably in holes each have a perforated plate (12, 13 ) are plugged, in which wall parts of a closed up to a Zulufteinlaß (7) and Zuluftauslaß (9) space.
2. Rohrwärmetauscher nach Anspruch 1 , dadurch gekennzeichnet, daß das2. Pipe heat exchanger according to claim 1, characterized in that the
Rohrbündel 84) zusammen mit den Lochplatten (12, 13) insgesamt lösbar in dem Zuluftkanal (8) befestigt ist.Tube bundle 84) together with the perforated plates (12, 13) is releasably secured in the supply air duct (8).
3. Verfahren zum Betrieb des Rohrwärmetauschers nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß der Abluftdruck innerhalb der Rohre (4) kleiner als der Zuluftdruck in dem die Rohre umgebenden Zuluftkanal (8) eingestellt wird. 3. A method for operating the tube heat exchanger according to claim 1 or 2, characterized in that the exhaust air pressure within the tubes (4) is set smaller than the supply air pressure in the surrounding air supply duct (8).
PCT/DE2006/001451 2005-08-27 2006-08-17 Tube heat exchanger WO2007025506A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102005040610.6 2005-08-27
DE102005040610A DE102005040610A1 (en) 2005-08-27 2005-08-27 Pipe heat exchanger for use in e.g. stretcher, has pipe bundle with pipes for guiding exhaust air, and supply air channel guiding fresh air, where longitudinal end of each pipe is detachably inserted into cavity of perforated sheets

Publications (1)

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WO2007025506A1 true WO2007025506A1 (en) 2007-03-08

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PCT/DE2006/001451 WO2007025506A1 (en) 2005-08-27 2006-08-17 Tube heat exchanger

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DE (1) DE102005040610A1 (en)
TW (1) TW200708710A (en)
WO (1) WO2007025506A1 (en)

Families Citing this family (3)

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Publication number Priority date Publication date Assignee Title
GB2452927B (en) * 2007-09-18 2012-09-19 Vent Axia Group Ltd A heat recovery ventilation device
DE102009039689A1 (en) * 2009-09-02 2011-03-03 Ganzenmüller, Ulrike Oven exhaust heat recovery system
CN102247247B (en) * 2011-06-22 2013-08-21 中国人民解放军军事医学科学院卫生装备研究所 Multi-cavity automatic inflating stretcher

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DE2931160A1 (en) * 1979-08-01 1981-02-19 Rudolf Dr Wieser Elongated ancillary heating-surface block - has several bundles of separately removable tubes in one casing, for feed-water and air, heating
EP1213557A2 (en) * 2000-12-05 2002-06-12 Kvaerner Pulping Oy A tube structure, a flow channel structure, and a heat exchanger
WO2006021164A1 (en) * 2004-08-20 2006-03-02 A. Monforts Textilmaschinen Gmbh & Co. Kg Tubular heat exchanger

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2196683A (en) * 1937-12-04 1940-04-09 Superheater Co Ltd Multitubular heat interchanger
DE2931160A1 (en) * 1979-08-01 1981-02-19 Rudolf Dr Wieser Elongated ancillary heating-surface block - has several bundles of separately removable tubes in one casing, for feed-water and air, heating
EP1213557A2 (en) * 2000-12-05 2002-06-12 Kvaerner Pulping Oy A tube structure, a flow channel structure, and a heat exchanger
WO2006021164A1 (en) * 2004-08-20 2006-03-02 A. Monforts Textilmaschinen Gmbh & Co. Kg Tubular heat exchanger

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