DE102008058817A1 - Air-air heat exchanger for ventilation system, comprises two counter-flow air paths and ventilator conveying opposing air currents, where air paths are arranged in closed cylindrical housing - Google Patents
Air-air heat exchanger for ventilation system, comprises two counter-flow air paths and ventilator conveying opposing air currents, where air paths are arranged in closed cylindrical housing Download PDFInfo
- Publication number
- DE102008058817A1 DE102008058817A1 DE102008058817A DE102008058817A DE102008058817A1 DE 102008058817 A1 DE102008058817 A1 DE 102008058817A1 DE 102008058817 A DE102008058817 A DE 102008058817A DE 102008058817 A DE102008058817 A DE 102008058817A DE 102008058817 A1 DE102008058817 A1 DE 102008058817A1
- Authority
- DE
- Germany
- Prior art keywords
- air
- cylindrical housing
- heat exchanger
- channels
- fan
- 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.)
- Granted
Links
- 238000009423 ventilation Methods 0.000 title claims description 3
- 238000005192 partition Methods 0.000 description 7
- 230000012447 hatching Effects 0.000 description 2
- 230000001737 promoting effect Effects 0.000 description 2
- 238000010276 construction Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000009420 retrofitting Methods 0.000 description 1
- 230000002441 reversible effect Effects 0.000 description 1
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
- 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
- F28D7/0058—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 for only one medium being tubes having different orientations to each other or crossing the conduit for the other heat exchange medium
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D19/00—Axial-flow pumps
- F04D19/02—Multi-stage pumps
- F04D19/022—Multi-stage pumps with concentric rows of vanes
-
- 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
- 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
-
- 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
- F28D9/0012—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 apparatus having an annular form
- F28D9/0018—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 apparatus having an annular form without any annular circulation of the heat exchange media
-
- 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
- F28F9/026—Header boxes; End plates with static flow control means, e.g. with means for uniformly distributing heat exchange media into conduits
- F28F9/027—Header boxes; End plates with static flow control means, e.g. with means for uniformly distributing heat exchange media into conduits in the form of distribution pipes
- F28F9/0275—Header boxes; End plates with static flow control means, e.g. with means for uniformly distributing heat exchange media into conduits in the form of distribution pipes with multiple branch pipes
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F2250/00—Arrangements for modifying the flow of the heat exchange media, e.g. flow guiding means; Particular flow patterns
- F28F2250/08—Fluid driving means, e.g. pumps, fans
-
- 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
Abstract
Description
Die Erfindung betrifft einen Luft-Luft-Wärmetauscher für Belüftungsanlagen, mit zwei im Gegenstrom geführten Luftbahnen und einem die entgegengesetzten Luftströme fördernden Ventilator.The The invention relates to an air-to-air heat exchanger for ventilation systems, with two in countercurrent Aerial trajectories and one of the opposite air currents promoting Fan.
Da heute beheizte Gebäude zumeist gut isoliert sind und Türen und Fenster relativ dicht schließen, muß ständig feuchte und schadstoffhaltige, verbrauchte Luft abgeführt werden und durch Frischluft ersetzt werden. Bei der Abluft handelt es sich im allgemeinen um aufgeheizte Luft, deren wertvoller Energieinhalt in der Regel ungenutzt verlorengeht. Es ist zwar möglich, den genannten Energieinhalt mithilfe von Wärmetauschern zurückzugewinnen. Dies geschieht beispielsweise mithilfe sogenannter Kreuzstrom-Wärmetauschern oder mithilfe von Wärmetauschern, die nach dem Rotationsprinzip arbeiten. Beide Wärmetauschersysteme erfordern eine komplizierte, aufwendige Luftführung mit zwei Ventilatoren und sind in der Regel nur realisierbar, wenn sie von Anfang an in die Bauplanung eines Gebäudes einbezogen werden.There today heated buildings mostly well insulated and doors and windows close relatively tight, must constantly moist and polluted, used air removed be replaced with fresh air. At the exhaust air acts it is generally heated air, its valuable energy content usually lost unused. It is possible, the recover energy content using heat exchangers. This happens, for example, by means of so-called cross-flow heat exchangers or with the help of heat exchangers, which work according to the rotation principle. Both heat exchanger systems require a complicated, complex air duct with two fans and are usually only realizable if they are in the beginning Construction planning of a building be included.
Der Erfindung liegt daher die Aufgabe zugrunde, einen Wärmetauscher zu schaffen, der mit wenig Aufwand herstellbar und überall, auch zum Nachrüsten einsetzbar ist und einen guten Wirkungsgrad aufweist.Of the The invention is therefore based on the object, a heat exchanger to create that can be produced with little effort and everywhere, also for retrofitting can be used and has a good efficiency.
Zur Lösung dieser Aufgabe ist der erfindungsgemäße Wärmetauscher dadurch gekennzeichnet, dass die Luftbahnen in einem geschlossenen zylindrischen Gehäuse angeordnet sind, in dessen innerem eine erste Luftbahn innerhalb geschlossener Kanäle verläuft, während die zweite Luftbahn in dem Zwischenraum zwischen den geschlossenen Kanälen und dem Gehäuse angeordnet ist und dass der Ventilator an einem Ende des Zylinders angeordnet ist und einen Innenring und einen entgegengesetzt fördernden Außenring umfaßt.to solution this object, the heat exchanger according to the invention is characterized in that that the air paths are arranged in a closed cylindrical housing are inside, a first airway within closed channels runs, while the second air path in the space between the closed channels and the housing is arranged and that the fan at one end of the cylinder is arranged and an inner ring and an opposite promotional outer ring includes.
Erfindungsgemäß ist somit für zwei entgegengesetzte Luftströme nur ein Ventilator vorgesehen, der den Aufbau der Anlage insgesamt vereinfacht. Es ist nur ein Antriebsmotor und nur ein Ventilatorgehäuse notwendig. Der Ventilator ist unmittelbar in das Gehäuse des Wärmetauschers integriert. Es ergibt sich eine kompakte und relativ einfache Anlage.According to the invention is thus for two opposite air streams Only one fan is provided, which is the overall structure of the plant simplified. It is only a drive motor and only a fan housing necessary. The fan is integrated directly into the housing of the heat exchanger. It results in a compact and relatively simple investment.
Entsprechend einer ersten Ausführungsform verläuft eine der Strömungsbahnen in Rohren innerhalb eines zylindrischen Wärmetauscherbehälters, während die zweite Strömungsbahn unmittelbar durch diesen Wärmetauscherbehälter verläuft und die Luft sich zwischen den Innenwänden des Gehäuses und den Außenwänden der Rohre befindet. Die Rohre können mehr oder weniger handelsübliche Rohre sein. Die Oberfläche kann innen und außen zur Verbesserung des Wärmeübergangs aufgerauht, mit Noppen versehen sein, usw.Corresponding a first embodiment is one the flow paths in pipes inside a cylindrical heat exchanger tank, while the second flow path passes directly through this heat exchanger tank and the Air between the inner walls of the housing and the outer walls of the Pipes is located. The pipes can more or less commercial tubes be. The surface can be inside and outside to Improvement of the heat transfer roughened, be provided with nubs, etc.
Entsprechend einer zweiten Ausführungsform wird das Innere des Wärmetauschers im Querschnitt durch radial verlaufende Trennwände unterteilt, so dass sich im Querschnitt die Form einer Torte mit entsprechenden Tortenstücken ergibt. Jedes zweite dieser Tortenstücke ist zum äußeren Rand hin durch eine Trennwand abgeschlossen und bildet somit einen geschlossenen Kanal für einen der beiden Luftströme, während jedes zweite andere Tortenstück lediglich eine nach außen offene Tasche zwischen den Kanälen bildet, in die von außen Luft eintreten kann, die sich zwischen dieser Tortenstück-Konstruktion und der Innenwand des Gehäuses befindet.Corresponding a second embodiment becomes the interior of the heat exchanger divided in cross section by radially extending partitions, so that in cross-section the shape of a cake with corresponding pie pieces results. Every second of these cake pieces is to the outer edge closed by a partition and thus forms a closed Channel for one of the two air streams, while every other piece of cake only one outward open pocket between the channels forms, in the outside Air can enter between this pie piece design and the inner wall of the housing located.
Der durch den Innenring des Ventilators geförderte Luftstrom entspricht dem Luftstrom, der durch die geschlossenen Kanäle gefördert wird. Diese Kanäle werden nach dem Eintritt in den Wärmetauscher kegelförmig auseinandergeführt, so dass ein konischer Endbereich der Rohrführung gebildet wird, bis die Kanäle in einen Mittelbereich des Wärmetauschers übergehen, in dem sie parallel zueinander laufen und größeren Abstand zueinander aufweisen als in den beiden konischen Endbereichen. Die konischen Endbereiche der Kanalführung dienen dazu, die Kanäle in Verbindung mit dem Innenring des Ventilators zu bringen. In den konischen Endbereichen tritt die durch den Außenring des Ventilators geförderte Luft mit den Kanälen in Wärmeaustausch.Of the through the inner ring of the fan promoted air flow corresponds the air flow that is conveyed through the closed channels. These channels will be after entering the heat exchanger conical guided apart, so that a conical end portion of the pipe guide is formed until the channels pass into a central region of the heat exchanger, in which they run parallel to each other and have greater distance from each other than in the two conical end regions. The conical end areas the canal guidance serve the channels in conjunction with the inner ring of the fan. In the conical end areas occurs through the outer ring of the fan promoted air with the channels in heat exchange.
Bei der ersten Ausführungsform wird der erste Luftstrom innerhalb von Rohren geführt, die von dem entgegengesetzten zweiten Luftstrom umspült werden. Alternativ kann gemäß einer zweiten Ausführungsform innerhalb des Zylinders mit Trennwänden ein Kanalsystem gebaut werden. Dabei können tortenstückförmige, nach außen geschlossene Kanäle den ersten Luftstrom bilden, während der entgegengesetzte Luftstrom in Zwischenräume zwischen den Tortenstücken eintreten kann, die von außen zugänglich sind.at the first embodiment the first air flow is conducted inside pipes, the be lapped by the opposite second air flow. Alternatively, you can according to a second embodiment built within the cylinder with partitions a channel system become. This pie-shaped, nach Outside closed channels to form the first airflow while the opposite stream of air enters interstices between the pieces of cake can, from the outside accessible are.
Bei der ersten Ausführungsform werden die Rohre in den konischen Endbereichen konisch auseinandergeführt bzw. zusammengeführt. In diesem konischen Bereich wird die Luft des Gegenstroms mit der Oberfläche der Kanäle in Berührung gebracht, so dass es zu einem Wärmeaustausch kommt. Der Gegenstrom befindet sich in den Zwischenräumen zwischen den Kanälen. Diese Zwischenräume sind zu dem Innenring des Ventilators hin durch Trennwände verschlossen.at the first embodiment the tubes are conically separated in the conical end regions or merged. In this conical area, the air of the countercurrent with the surface of the channels in touch brought, causing it to heat exchange comes. The countercurrent is located in the spaces between the channels. These spaces are closed to the inner ring of the fan through partitions.
Diese Trennwände sind im übrigen bei beiden Ausführungsformen vorgesehen. Nur die in Kanälen geführte Luft hat Zugang zu dem Innenring des Ventilators und kann durch diesen gefördert werden.These partitions are otherwise provided in both embodiments. Only in Ka ducted air has access to the inner ring of the fan and can be conveyed through it.
Sofern es sich bei den Kanälen um Rohre handelt, können diese im konischen Endbereich jeweils im einzelnen konisch sein oder auch durch engere Zusammenstellung eine insgesamt konische Anordnung bilden. Bei der zweiten Ausführungsform werden die Dimensionen der tortenstückförmigen Kammern im konischen Endbereich kontinuierlich zurückgenommen.Provided it's the channels can be about pipes these in each case be conical in the conical end region or even by closer compilation a total conical arrangement form. In the second embodiment the dimensions of the pie-shaped chambers continuously withdrawn in the conical end region.
Der erfindungsgemäße Wärmetauscher kann aus Blech oder auch aus Kunststoff hergestellt sein.Of the Heat exchanger according to the invention can be made of sheet metal or plastic.
Im folgenden werden bevorzugte Ausführungsbeispiele der Erfindung anhand der beigefügten Zeichnung näher erläutert.in the The following are preferred embodiments the invention with reference to the accompanying drawings explained in more detail.
In
Der
Ventilator
Die
Räume des
Aussenrings
Der
entgegengesetzte Luftstrom tritt über den Bereich des Innenrings
Im
Inneren des zylindrischen Gehäuses
In
den beiden Endbereichen des zylindrischen Gehäuses
Nach
unten in
Der
nach oben in der Zeichnung gehende Strom, der nach oben aus dem
Ventilator
Zu
der Darstellung der
Wie
in
Auf diese Weise kommt es zu einem intensiven Wärmeaustausch. Naturgemäß können die Rohre eine geeignete Profilierung ihrer Außenfläche und Innenfläche aufweisen, die den Wärmeübergang verstärkt.On This way, there is an intense heat exchange. Naturally, the Tubes have a suitable profiling of their outer surface and inner surface, the heat transfer strengthened.
Im
folgenden soll eine zweite Ausführungsform
der Erfindung erläutert
werden. Diese Ausführungsform
ist in
In
Im
Bereich der konischen Endstücke,
die hier mit
In
In jedem Fall ist zu beachten, dass nur die in den Kanälen geführte Luft in den durch den Innenring gebildeten Ventilator eintritt bzw. durch diesen gefördert wird. Daher ist auch bei der zweiten Ausführungsform im Bereich der tortenstückförmigen Taschen, die zwischen die Kanäle eintreten, vor dem Innenring des Ventilators eine Trennwand vorgesehen, so dass nur die Kanäle mit dem Innenring in Verbindung treten können.In In any case, it should be noted that only the air routed in the ducts enters or enters through the fan formed by the inner ring promoted this becomes. Therefore, even in the second embodiment, in the area of pie-shaped pockets, between the channels enter, provided in front of the inner ring of the fan a partition, so that only the channels can communicate with the inner ring.
Der
erfindungsgemäße Wärmetauscher
läßt sich
mit dem Ventilator zusammen in den Durchbruch einer Außenwand
einbauen. In
Claims (4)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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DE102008058817A DE102008058817B4 (en) | 2008-11-25 | 2008-11-25 | Air-air heat exchanger |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102008058817A DE102008058817B4 (en) | 2008-11-25 | 2008-11-25 | Air-air heat exchanger |
Publications (2)
Publication Number | Publication Date |
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DE102008058817A1 true DE102008058817A1 (en) | 2010-05-27 |
DE102008058817B4 DE102008058817B4 (en) | 2013-07-04 |
Family
ID=42114607
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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DE102008058817A Active DE102008058817B4 (en) | 2008-11-25 | 2008-11-25 | Air-air heat exchanger |
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Cited By (14)
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 |
DE102011107929A1 (en) * | 2011-07-19 | 2013-01-24 | Paul Wärmerückgewinnung GmbH | Air-to-air heat exchanger comprises heat exchanger main portion having surface that is made of plastic and is treated with fluorine for enhancing drainage of condensed liquid |
DE102013111290B3 (en) | 2013-10-14 | 2014-08-21 | ROOS GmbH | Air-to-air heat exchanger for ventilating system, has ventilator arranged at end of cylindrical case and plastic insulation sleeve covering inside wall of case in center sections region and constricting case inner diameter |
GB2515329A (en) * | 2013-06-20 | 2014-12-24 | Flakt Woods Ltd | An axial fan for bi-directional air movement |
EP3040668A1 (en) | 2014-12-31 | 2016-07-06 | Brink Climate Systems B.V. | Heat exchanger for a ventilation system |
CN106051952A (en) * | 2016-08-05 | 2016-10-26 | 河北彩居科技有限公司 | Air purifier |
EP3213005A4 (en) * | 2014-10-27 | 2018-07-25 | Gagné-Marcotte, Gabriel | Push-pull counter flow heat exchanger |
CN108469197A (en) * | 2018-03-16 | 2018-08-31 | 青岛海尔空调器有限总公司 | Heat exchanger core for two-way in/out air tube |
WO2019174218A1 (en) * | 2018-03-16 | 2019-09-19 | 青岛海尔空调器有限总公司 | Heat exchange core for bidirectional air inlet/outlet pipe |
NO20190522A1 (en) * | 2019-02-22 | 2020-08-24 | Peakvent As | Ventilation unit |
DE102019113502A1 (en) * | 2019-05-21 | 2020-11-26 | Einhell Germany Ag | Electrical appliance |
DE102020121397B3 (en) * | 2020-08-14 | 2021-06-02 | Emanuel Lange | ARRANGEMENT FOR ROOM VENTILATION |
DE102019105961B4 (en) | 2019-03-08 | 2022-09-15 | ROOS GmbH | Air to air heat exchanger |
EP4083438A1 (en) * | 2021-04-29 | 2022-11-02 | Napalmi Tietotekniikka Oy | Double flow heat exchanging fan |
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DE102005045734A1 (en) * | 2004-09-23 | 2007-04-12 | Josef Bachmaier | Heat exchanger in a coil structure, for ventilation systems, has a suction fan to force air into channels for summer or winter use with a blower fan for the heated/cooled air |
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GB2452927B (en) * | 2007-09-18 | 2012-09-19 | Vent Axia Group Ltd | A heat recovery ventilation device |
DE102011107929A1 (en) * | 2011-07-19 | 2013-01-24 | Paul Wärmerückgewinnung GmbH | Air-to-air heat exchanger comprises heat exchanger main portion having surface that is made of plastic and is treated with fluorine for enhancing drainage of condensed liquid |
GB2515329B (en) * | 2013-06-20 | 2020-08-05 | Flakt Woods Ltd | An axial fan for bi-directional air movement |
GB2515329A (en) * | 2013-06-20 | 2014-12-24 | Flakt Woods Ltd | An axial fan for bi-directional air movement |
CN105637316B (en) * | 2013-10-14 | 2018-07-20 | 罗斯有限公司 | Air-air heat exchanger |
CN105637316A (en) * | 2013-10-14 | 2016-06-01 | 罗斯有限公司 | Air-air heat exchanger |
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RU2634652C1 (en) * | 2013-10-14 | 2017-11-02 | Роос Гмбх | Air-to-air heat exchanger |
US9976767B2 (en) * | 2013-10-14 | 2018-05-22 | ROOS GmbH | Air-to-air heat exchanger |
WO2015055435A1 (en) | 2013-10-14 | 2015-04-23 | ROOS GmbH | Air-air heat exchanger |
DE102013111290B3 (en) | 2013-10-14 | 2014-08-21 | ROOS GmbH | Air-to-air heat exchanger for ventilating system, has ventilator arranged at end of cylindrical case and plastic insulation sleeve covering inside wall of case in center sections region and constricting case inner diameter |
US10570907B2 (en) | 2014-10-27 | 2020-02-25 | Les Entreprises De Development Durable Energie Solutons Et Associes Inc. | Push-pull counter flow heat exchanger |
EP3213005A4 (en) * | 2014-10-27 | 2018-07-25 | Gagné-Marcotte, Gabriel | Push-pull counter flow heat exchanger |
EP3040668A1 (en) | 2014-12-31 | 2016-07-06 | Brink Climate Systems B.V. | Heat exchanger for a ventilation system |
CN106051952A (en) * | 2016-08-05 | 2016-10-26 | 河北彩居科技有限公司 | Air purifier |
CN106051952B (en) * | 2016-08-05 | 2021-10-22 | 河北秉钧网络科技有限公司 | Air purifier |
CN108469197A (en) * | 2018-03-16 | 2018-08-31 | 青岛海尔空调器有限总公司 | Heat exchanger core for two-way in/out air tube |
WO2019174214A1 (en) * | 2018-03-16 | 2019-09-19 | 青岛海尔空调器有限总公司 | Heat exchange core for two-way air inlet and outlet pipe |
WO2019174218A1 (en) * | 2018-03-16 | 2019-09-19 | 青岛海尔空调器有限总公司 | Heat exchange core for bidirectional air inlet/outlet pipe |
NO20190522A1 (en) * | 2019-02-22 | 2020-08-24 | Peakvent As | Ventilation unit |
NO345384B1 (en) * | 2019-02-22 | 2021-01-11 | Peakvent As | Ventilation unit |
US20220099318A1 (en) * | 2019-02-22 | 2022-03-31 | Peakvent As | Ventilation unit |
DE102019105961B4 (en) | 2019-03-08 | 2022-09-15 | ROOS GmbH | Air to air heat exchanger |
DE102019113502A1 (en) * | 2019-05-21 | 2020-11-26 | Einhell Germany Ag | Electrical appliance |
EP3748252A1 (en) * | 2019-05-21 | 2020-12-09 | Einhell Germany AG | Electrical appliance |
DE102019113502B4 (en) | 2019-05-21 | 2023-07-27 | Einhell Germany Ag | electrical appliance |
DE102020121397B3 (en) * | 2020-08-14 | 2021-06-02 | Emanuel Lange | ARRANGEMENT FOR ROOM VENTILATION |
EP4083438A1 (en) * | 2021-04-29 | 2022-11-02 | Napalmi Tietotekniikka Oy | Double flow heat exchanging fan |
US11732721B2 (en) | 2021-04-29 | 2023-08-22 | Napalmi Tietotekniikka Oy | Fan |
Also Published As
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DE102008058817B4 (en) | 2013-07-04 |
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