DE3613942A1 - Deaeration and aeration installation with a heat accumulator - Google Patents

Deaeration and aeration installation with a heat accumulator

Info

Publication number
DE3613942A1
DE3613942A1 DE19863613942 DE3613942A DE3613942A1 DE 3613942 A1 DE3613942 A1 DE 3613942A1 DE 19863613942 DE19863613942 DE 19863613942 DE 3613942 A DE3613942 A DE 3613942A DE 3613942 A1 DE3613942 A1 DE 3613942A1
Authority
DE
Germany
Prior art keywords
heat
ventilation
accumulator
heat accumulator
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
Application number
DE19863613942
Other languages
German (de)
Other versions
DE3613942C2 (en
Inventor
Erich Klawitter
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to DE19863613942 priority Critical patent/DE3613942A1/en
Publication of DE3613942A1 publication Critical patent/DE3613942A1/en
Application granted granted Critical
Publication of DE3613942C2 publication Critical patent/DE3613942C2/de
Granted legal-status Critical Current

Links

Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24FAIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F12/00Use of energy recovery systems in air conditioning, ventilation or screening
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24FAIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00Control or safety arrangements
    • F24F11/0001Control or safety arrangements for ventilation
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24FAIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F7/00Ventilation
    • F24F7/007Ventilation with forced flow
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24FAIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F12/00Use of energy recovery systems in air conditioning, ventilation or screening
    • F24F12/001Use of energy recovery systems in air conditioning, ventilation or screening with heat-exchange between supplied and exhausted air
    • F24F2012/008Use of energy recovery systems in air conditioning, ventilation or screening with heat-exchange between supplied and exhausted air cyclic routing supply and exhaust air
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02BCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B30/00Energy efficient heating, ventilation or air conditioning [HVAC]
    • Y02B30/56Heat recovery units

Abstract

To simplify apparatuses used to recover heat from the outgoing air of heated rooms compared with previous ones and to improve the enthalpy exchange degree, a commercially available, continuously adjustable ventilator 1 or a ventilator capable of being switched in steps, the direction of rotation of which is switched over by an electronic clock generator in short time intervals alternately from right-hand to left-hand rotation - from deaeration to aeration -, is assigned a heat accumulator 2, which consists of plates and whose heat-accumulator plates, arranged at a short distance from one another, are provided with the indentations 3 for the purpose of interrupting the heat dissipation from the hot to the cold side of the heat accumulator 2, in such a way that the outgoing air and the fresh air in each case successively flows through between the heat-accumulator plates. In addition, a damper register can be arranged in front of the ventilator 1, further heating the fresh air if required. The heat accumulator 2 is merely pushed into the ventilator shaft; it is designed so that even old ventilator installations already in operation can be retrofitted with it and with the aid of an electronic clock generator can be used for deaeration and aeration with heat recovery.

Description

Die Erfindung betrifft eine Entlüftungs- und Belüftungs­ anlage mit einem Wärmespeicher zur Rückgewinnung der Wärme aus der Abluft beheizter Räume nach dem Oberbegriff des Anspruchs 1.The invention relates to a ventilation and aeration System with a heat store to recover the heat from the exhaust air of heated rooms according to the generic term of Claim 1.

Für bewohnte, beheizte Räume ist aus hygienischen und bauphysikalischen Gründen ein ausreichender Wechsel von Raumluft gegen Frischluft erforderlich.For inhabited, heated rooms is made of hygienic and a sufficient change from Indoor air against fresh air required.

Da der Luftwechsel überwiegend durch das Öffnen der Fenster herbeigeführt werden muß, dieses aber in der kalten Jahres­ zeit zu einem hohen Wärmeverlust und einer unangenehmen, starken Abkühlung der Raumluft führt, werden die Fenster vielfach nicht oft oder lange genug geöffnet.Because the air change mainly by opening the window must be brought about, but this in the cold year time to a high heat loss and an unpleasant, the windows will cool down considerably often not open often or long enough.

Infolge eines zu geringen Luftaustausches wird der in den Räumen von der Luft aufgenommene Wasserdampf nicht abgeführt; es kann zu Bauschäden durch Tauwasserniederschlag an den kühlen Raumumschließungsflächen kommen.As a result of insufficient air exchange, the air in the Water vapor absorbed by the air in rooms is not removed; it can cause structural damage due to condensation on the cool room enclosures come.

Die Wärmerückgewinnung aus der Abluft soll den sonst bei der Belüftung beheizter Räume entstehenden Wärmeverlust weitgehend verhindern und den Bewohnern die Möglichkeit bieten, Heizenergie einzusparen und trotzdem die Räume ausreichend zu belüften und vor Bauschäden durch Tauwasser­ niederschlag zu schützen.The heat recovery from the exhaust air should otherwise be with the Ventilation of heated rooms causes heat loss largely prevent and give residents the opportunity offer to save heating energy and still save the rooms sufficient to ventilate and prevent construction damage from condensation to protect precipitation.

Es ist bekannt, zur Erfüllung dieser Aufgabe rotierende Wärmeaustauscher, Wasser-Umlaufsysteme, Kappilar- Ventilatoren, Wärmepumpen, Plattenwärmeaustauscher oder Wärmerohre einzusetzen. It is known to be rotating to accomplish this task Heat exchangers, water circulation systems, capillary Fans, heat pumps, plate heat exchangers or Use heat pipes.  

Diese Geräte sind jedoch groß und teuer, benötigen selbst viel Energie oder haben einen nur geringen Enthalpieaustausch­ grad. Sie haben zudem jeweils zwei getrennte Zuluft- und Abluftkanäle.However, these devices are large and expensive, they need themselves a lot of energy or have little enthalpy exchange degrees. You also have two separate supply air and Exhaust ducts.

Der Erfindung liegt die Aufgabe zugrunde, Raumluft abzu­ führen und durch die jeweils benötigte Frischluftmenge zu ersetzen und dabei die Wärme aus der Abluft mit einem hohen Enthalpieaustauschgrad auf die Frischluft zu übertragen.The invention is based, to remove air from the task lead and through the amount of fresh air required replace and thereby remove the heat from the exhaust air with a high Degree of enthalpy transfer to the fresh air.

Diese Aufgabe wird bei einer gattungsgemäßen Einrichtung durch die kennzeichnenden Merkmale des Anspruchs 1 gelöst.This task is carried out in a generic facility solved by the characterizing features of claim 1.

Damit bei Bedarf oder auf Wunsch die Zulufttemperatur weiter erhöht wird, schaltet der elektronische Taktgeber nach Betätigen eines separaten Schalters mit seiner Schaltstufe "Belüftung" zusätzlich ein vor dem Ventilator angeordnetes Heizregister ein.This means that the supply air temperature can continue if necessary or on request is increased, the electronic clock switches after Actuation of a separate switch with its switching stage "Ventilation" additionally one arranged in front of the fan Heating register on.

Durch einen weiteren Schalter kann der elektronische Taktgeber abgeschaltet werden; der Ventilator 1 läuft dann, wie bei herkömmlichen Anlagen, nur in einer, der gewünschten Drehrichtung.The electronic clock can be switched off by a further switch; the fan 1 then runs, as in conventional systems, only in one, the desired direction of rotation.

Der Wärmespeicher 2 wird lediglich in den Ventilatorschacht eingeschoben, er kann leicht entnommen werden.The heat accumulator 2 is only inserted into the fan shaft, it can be easily removed.

Bereits in Betrieb befindliche Ventilator-Anlagen können nachträglich mit dem erfindungsgemäßen Wärmespeicher 2 und dem elektronischen Taktgeber nachgerüstet und zur Entlüftung und Belüftung mit Wärmerückgewinnung genutzt werden. Fan systems which are already in operation can be retrofitted with the heat accumulator 2 according to the invention and the electronic clock generator and can be used for ventilation and ventilation with heat recovery.

Die mit der Erfindung erzielbaren Vorteile bestehen insbesondere darin, daß jeder Raum getrennt und nach Bedarf entlüftet und belüftet werden kann, dabei die Wärme aus der Abluft auf die Frischluft übertragen wird und somit erheb­ liche Energie- und Heizkostenersparnisse zu erzielen sind. Der Ventilator 1 einschl. Wärmespeicher 2 kann z. B. in einer Außenwand üblicher Stärke montiert werden. Mit Ausnahme des Wärmespeichers 2 werden nur serienmäßig gefertigte, preisgünstige Bauteile benötigt. Die Nachrüstung vorhandener Ventilatoranlagen mit dem Wärmespeicher 2 und einem elektronischen Taktgeber ist möglich.The advantages that can be achieved with the invention are, in particular, that each room can be separated and ventilated and ventilated as required, the heat being transferred from the exhaust air to the fresh air and thus considerable savings in energy and heating costs can be achieved. The fan 1 including heat accumulator 2 can, for. B. be mounted in an outer wall of common thickness. With the exception of the heat accumulator 2 , only mass-produced, inexpensive components are required. Existing fan systems can be retrofitted with heat accumulator 2 and an electronic clock.

Ein Ausführungsbeispiel der Erfindung ist in der Abbildung dargestellt: Mit Hilfe eines elektronischen Taktgebers wird der Ventilator 1 abwechselnd von Rechtslauf auf Links­ lauf - von Entlüftung auf Belüftung - umgeschaltet. Während des Abluftbetriebes werden die Platten des Wärmespeichers 2 von der zwischen ihnen hindurchströmenden warmen Raumluft erwärmt. Nach der Umschaltung des elektronischen Taktgebers wird Frischluft angesaugt und über die Platten geführt; jetzt gibt der Wärmespeicher 2 die gespeicherte Wärme wieder ab, wobei sich die Frischluft fast auf Raumtemperatur erwärmt. Die Platten sind mit den Einschnitten 3 versehen; diese unterbinden die Wärmeableitung von der warmen zur kalten Seite des Wärmespeichers 2. Dem Ventilator 1 kann ein Heizregister vorgeschaltet werden, das, falls gewünscht, die Frischlufttemperatur weiter erhöht.An embodiment of the invention is shown in the figure: With the help of an electronic clock, the fan 1 is alternately switched from clockwise to counterclockwise rotation - from ventilation to ventilation. During the exhaust air operation, the plates of the heat accumulator 2 are heated by the warm room air flowing between them. After switching the electronic clock, fresh air is sucked in and led over the plates; Now the heat accumulator 2 releases the stored heat again, the fresh air almost warming up to room temperature. The plates are provided with the incisions 3 ; these prevent heat dissipation from the warm to the cold side of the heat accumulator 2 . A fan can be connected upstream of the fan 1 , which, if desired, further increases the fresh air temperature.

Claims (5)

1. Entlüftungs- und Belüftungsanlage mit einem Wärmespeicher und einem stufenlos regelbaren oder in Stufen schaltbaren Ventilator zur Rückgewinnung der Wärme aus der Abluft beheizter Räume, dadurch gekennzeichnet, daß dem Ventilator (1), dessen Drehrichtung von einem elektronischen Taktgeber in kurzen Zeitabständen abwechselnd von Rechtslauf auf Linkslauf - von Entlüftung auf Belüftung - umgeschaltet wird, ein aus Platten bestehender Wärmespeicher (2), dessen in geringem Abstand voneinander montierte Wärme­ speicherplatten zwecks Unterbindung der Wärmeableitung von der warmen zur kalten Seite des Wärmespeichers (2) mit Einschnitten (3) versehen sind, so zugeordnet ist, daß jeweils die Abluft und die Frischluft nacheinander zwischen den Wärmespeicherplatten hindurchströmt.1. ventilation and ventilation system with a heat accumulator and a continuously variable or switchable fan for recovering the heat from the exhaust air of heated rooms, characterized in that the fan ( 1 ), the direction of rotation of an electronic clock in short intervals alternating from clockwise rotation is switched to counterclockwise rotation - from ventilation to ventilation - a heat accumulator ( 2 ) consisting of plates, the heat storage plates of which are mounted at a short distance from one another are provided with incisions ( 3 ) in order to prevent heat dissipation from the warm to the cold side of the heat accumulator ( 2 ) , is assigned so that the exhaust air and the fresh air flow in succession between the heat storage plates. 2. Entlüftungs- und Belüftungsanlage nach Anspruch 1, dadurch gekennzeichnet, daß durch den elektronischen Taktgeber bei der Schaltstufe "Belüftung" ein vor dem Ventilator (1) angeordnetes Heizregister eingeschaltet wird und die Frischluft weiter erwärmt.2. Ventilation and ventilation system according to claim 1, characterized in that arranged in front of the fan ( 1 ) heating register is switched on by the electronic clock in the switching stage "ventilation" and the fresh air is further heated. 3. Entlüftungs- und Belüftungsanlage nach Anspruch 1, dadurch gekennzeichnet, daß ein Schalter den Ventilator (1) bei Bedarf auf "Zuluft" oder auf "Abluft" umschaltet.3. ventilation and ventilation system according to claim 1, characterized in that a switch switches the fan ( 1 ) if necessary to "supply air" or "exhaust air". 4. Entlüftungs- und Belüftungsanlage nach Anspruch 1, dadurch gekennzeichnet, daß der Wärmespeicher (2) lediglich in den Ventilatorschacht eingeschoben ist und daher leicht entnommen werden kann. 4. ventilation and ventilation system according to claim 1, characterized in that the heat accumulator ( 2 ) is only inserted into the fan shaft and can therefore be easily removed. 5. Entlüftungs- und Belüftungsanlage nach den Ansprüchen 1 bis 4, dadurch gekennzeichnet, daß der Wärmespeicher (2) so ausgeführt ist, daß damit auch alte, bereits in Betrieb befindliche Ventilatoranlagen nachträglich ausgestattet und mit Hilfe eines elektronischen Taktgebers zur Entlüftung und Belüftung mit Wärmerückgewinnung genutzt werden können.5. Ventilation and ventilation system according to claims 1 to 4, characterized in that the heat accumulator ( 2 ) is designed so that old fan systems already in operation are retrofitted and with the help of an electronic clock generator for ventilation and ventilation with heat recovery can be used.
DE19863613942 1986-04-24 1986-04-24 Deaeration and aeration installation with a heat accumulator Granted DE3613942A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE19863613942 DE3613942A1 (en) 1986-04-24 1986-04-24 Deaeration and aeration installation with a heat accumulator

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19863613942 DE3613942A1 (en) 1986-04-24 1986-04-24 Deaeration and aeration installation with a heat accumulator

Publications (2)

Publication Number Publication Date
DE3613942A1 true DE3613942A1 (en) 1987-10-29
DE3613942C2 DE3613942C2 (en) 1990-09-27

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DE19863613942 Granted DE3613942A1 (en) 1986-04-24 1986-04-24 Deaeration and aeration installation with a heat accumulator

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Cited By (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0379989A1 (en) * 1989-01-26 1990-08-01 Consiglio Nazionale Delle Ricerche A prefabricated air conditioning system for the air-conditioning of a building
US4952283A (en) * 1988-02-05 1990-08-28 Besik Ferdinand K Apparatus for ventilation, recovery of heat, dehumidification and cooling of air
EP0428948A2 (en) * 1989-11-21 1991-05-29 Menerga Apparatebau GmbH Process for energy recovery in ventilation
EP0438037A1 (en) * 1990-01-19 1991-07-24 Kurt Tage Lennart Bergman Ventilation apparatus for ventilating a limited space within a building
GB2244127A (en) * 1990-05-15 1991-11-20 Erling Berner Air ventilation and heat exchange apparatus
DE4115710A1 (en) * 1990-05-15 1992-04-16 Erling Berner AIR EXCHANGE AND / OR DEHUMIDIFICATION DEVICE
DE4202970A1 (en) * 1992-02-03 1993-08-05 Klingenburg Gmbh Ventilation for inner rooms - comprises heat storage unit through which air flows from outside to in and inside to out by ventilator
US5375649A (en) * 1991-12-23 1994-12-27 Nilsen; Trond Ventilation device
WO1997035152A1 (en) * 1996-03-20 1997-09-25 Normann Erling C Ventilation device and window for accommodating the same
EP0990859A2 (en) 1998-09-29 2000-04-05 Roland Baumann Air exhausting and ventilating device
DE102009014575A1 (en) 2009-03-24 2010-10-07 Schöberl, Ernst Reversible axial continuous flow machine for supplying gases, steams and liquids, has blade profile, which is formed to generate lift in inflow area, and rear profile half is formed by rotating front profile half by certain degrees
DE202010010611U1 (en) 2010-07-23 2011-11-03 Mdm Diels Gmbh heat storage
DE202010010610U1 (en) 2010-07-23 2011-11-03 Mdm Diels Gmbh ventilation grille
DE202010010607U1 (en) 2010-07-23 2011-11-04 Mdm Diels Gmbh Ventilation and ventilation system
DE202012007862U1 (en) 2012-03-12 2012-09-20 Peter Mader flow body
WO2013017378A1 (en) * 2011-08-03 2013-02-07 LUNOS Lüftungstechnik GmbH für Raumluftsysteme Recessed profile
EP2634496A1 (en) * 2012-02-29 2013-09-04 Johann Dipl.-Ing. Mag. Aschauer Ventilation device
GB2523192A (en) * 2014-02-18 2015-08-19 Raymond John Hudson Warm air dehumidifier
CN106040430A (en) * 2016-06-29 2016-10-26 中国建筑科学研究院 Heat accumulation type honeycomb electrostatic filter and reciprocating type building ventilation device
DE202018002279U1 (en) 2018-05-04 2018-06-27 Peter Mader Noise optimization arrangement for ventilation systems

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4104423C2 (en) * 1991-02-14 1994-10-13 Erich Klawitter Ventilation and ventilation system with a heat accumulator
DE202012012312U1 (en) 2012-12-21 2013-02-01 Öko-Haustechnik inVENTer GmbH Electronic module for doubling the exhaust air output in case of need of regenerator systems with stationary double heat storage

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE6937165U (en) * 1969-09-20 1970-03-19 Friedhelm Laubkemeier INDOOR AIR REGENERATOR
DE1918396A1 (en) * 1969-04-11 1970-10-15 Ernst Funke Winding arrangement on small ware looms for - winding approaching ribbons in rolls
WO1985000879A1 (en) * 1983-08-08 1985-02-28 Kraftanlagen Ag Accumulation plant for heat transfer

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1918396A1 (en) * 1969-04-11 1970-10-15 Ernst Funke Winding arrangement on small ware looms for - winding approaching ribbons in rolls
DE6937165U (en) * 1969-09-20 1970-03-19 Friedhelm Laubkemeier INDOOR AIR REGENERATOR
WO1985000879A1 (en) * 1983-08-08 1985-02-28 Kraftanlagen Ag Accumulation plant for heat transfer

Cited By (26)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4952283A (en) * 1988-02-05 1990-08-28 Besik Ferdinand K Apparatus for ventilation, recovery of heat, dehumidification and cooling of air
EP0379989A1 (en) * 1989-01-26 1990-08-01 Consiglio Nazionale Delle Ricerche A prefabricated air conditioning system for the air-conditioning of a building
EP0428948A2 (en) * 1989-11-21 1991-05-29 Menerga Apparatebau GmbH Process for energy recovery in ventilation
EP0428948A3 (en) * 1989-11-21 1992-06-03 Menerga Apparatebau Gmbh Process for energy recovery in ventilation
EP0438037A1 (en) * 1990-01-19 1991-07-24 Kurt Tage Lennart Bergman Ventilation apparatus for ventilating a limited space within a building
GB2244127A (en) * 1990-05-15 1991-11-20 Erling Berner Air ventilation and heat exchange apparatus
DE4115710A1 (en) * 1990-05-15 1992-04-16 Erling Berner AIR EXCHANGE AND / OR DEHUMIDIFICATION DEVICE
DE9116290U1 (en) * 1990-05-15 1992-08-13 Berner, Erling, Zug, Ch
US5375649A (en) * 1991-12-23 1994-12-27 Nilsen; Trond Ventilation device
DE4202970A1 (en) * 1992-02-03 1993-08-05 Klingenburg Gmbh Ventilation for inner rooms - comprises heat storage unit through which air flows from outside to in and inside to out by ventilator
WO1997035152A1 (en) * 1996-03-20 1997-09-25 Normann Erling C Ventilation device and window for accommodating the same
EP0990859A2 (en) 1998-09-29 2000-04-05 Roland Baumann Air exhausting and ventilating device
DE102009014575A1 (en) 2009-03-24 2010-10-07 Schöberl, Ernst Reversible axial continuous flow machine for supplying gases, steams and liquids, has blade profile, which is formed to generate lift in inflow area, and rear profile half is formed by rotating front profile half by certain degrees
DE202009018855U1 (en) 2009-03-24 2014-01-20 Öko-Haustechnik inVENTer GmbH Reversible axial flow machine
DE202010010610U1 (en) 2010-07-23 2011-11-03 Mdm Diels Gmbh ventilation grille
DE202010010607U1 (en) 2010-07-23 2011-11-04 Mdm Diels Gmbh Ventilation and ventilation system
DE202010010611U1 (en) 2010-07-23 2011-11-03 Mdm Diels Gmbh heat storage
US10746422B2 (en) 2011-08-03 2020-08-18 Lunos Luftungstechnik Gmbh Fur Raumluftsysteme Recessed profile
WO2013017378A1 (en) * 2011-08-03 2013-02-07 LUNOS Lüftungstechnik GmbH für Raumluftsysteme Recessed profile
CN103874889A (en) * 2011-08-03 2014-06-18 朗适室内空气系统新风技术有限公司 Recessed profile
EP2634496A1 (en) * 2012-02-29 2013-09-04 Johann Dipl.-Ing. Mag. Aschauer Ventilation device
DE202012007862U1 (en) 2012-03-12 2012-09-20 Peter Mader flow body
GB2523192A (en) * 2014-02-18 2015-08-19 Raymond John Hudson Warm air dehumidifier
CN106040430A (en) * 2016-06-29 2016-10-26 中国建筑科学研究院 Heat accumulation type honeycomb electrostatic filter and reciprocating type building ventilation device
CN106040430B (en) * 2016-06-29 2018-07-13 中国建筑科学研究院 Heat accumulation type honeycomb electrostatic filter and reciprocating type building ventilation device
DE202018002279U1 (en) 2018-05-04 2018-06-27 Peter Mader Noise optimization arrangement for ventilation systems

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