US20050103483A1 - Ventilation device and method for its operation - Google Patents

Ventilation device and method for its operation Download PDF

Info

Publication number
US20050103483A1
US20050103483A1 US10/927,896 US92789604A US2005103483A1 US 20050103483 A1 US20050103483 A1 US 20050103483A1 US 92789604 A US92789604 A US 92789604A US 2005103483 A1 US2005103483 A1 US 2005103483A1
Authority
US
United States
Prior art keywords
ventilation device
inlet
outlet
channel
cavity
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.)
Abandoned
Application number
US10/927,896
Other languages
English (en)
Inventor
Bernhard Buhlmann
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.)
Fensterfabrik Albisrieden AG
Original Assignee
Fensterfabrik Albisrieden AG
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 Fensterfabrik Albisrieden AG filed Critical Fensterfabrik Albisrieden AG
Assigned to FENSTERFABRIK ALBISRIEDEN AG reassignment FENSTERFABRIK ALBISRIEDEN AG ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: BUHLMANN, BERNHARD
Publication of US20050103483A1 publication Critical patent/US20050103483A1/en
Abandoned legal-status Critical Current

Links

Images

Classifications

    • 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
    • F28F9/0265—Header boxes; End plates with static flow control means, e.g. with means for uniformly distributing heat exchange media into conduits by using guiding means or impingement means inside the header box
    • 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
    • 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
    • F28F9/22—Arrangements for directing heat-exchange media into successive compartments, e.g. arrangements of guide plates
    • 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

Definitions

  • the invention relates to a ventilation device according to the precharacterizing clause of claim 1 .
  • Such ventilation devices make it possible to replace waste air from a closed room by air which is supplied from outside and exchanges heat with the waste air.
  • the invention also relates to a method for operating a ventilation device according to the invention.
  • EP 1 308 678 A1 discloses a ventilation device of the generic type which can be installed, for example, in a window and in which a dual channel which consists of an air supply channel and a waste air channel closely thermally coupled therewith is led in a serpentine manner in a cuboid housing.
  • the device is very compact and can also easily be retrofitted. Owing to the sharp deflections, the flow is substantially turbulent and the efficiency is relatively high.
  • the length of the dual channel can moreover easily be adapted to the requirements which are set for the ventilation device with regard to the efficiency.
  • DE 33 47 028 A1 discloses a ventilation device which is integrated in a window frame.
  • the air supply channel and the waste air channel are each led almost completely around the window, over a part of the circumference as a dual channel, which is deflected at two corners of the window frame by 90° in each case.
  • This arrangement requires a great deal of space and can be used practically only in the form described, i.e. with integration in a window frame or the like.
  • the length of the dual channel and hence the degree of achievable heat exchange are determined substantially by the dimensions of the window frame.
  • the flow is likely to have relatively little turbulence, so that the heat transfer tends to be small owing to the formation of laminar flow, in any case unless additional measures are taken, for example heat exchanger ribs are provided.
  • the dual channel extends only over one side of the window frame.
  • the heat transfer is likely to be relatively slight in spite of heat exchanger ribs or a, concentric path of the air supply channel.
  • DE 34 26 778 A1 describes a ventilation device which can likewise be installed, for example, in a crossbeam of a window frame.
  • air supply channel and waste air channel are divided into straight channel segments separated by lamellae so that air supply and waste air channels alternate.
  • the design of the apparatus is therefore relatively complex. The more numerous and narrower the channel segments are for the purpose of effective heat transfer, the higher is the resistance to flow.
  • WO 96/12 145 A1 discloses a basically similar ventilation device in which the channel segments are arranged concentrically and have a helical shape.
  • This ventilation device is likely to have the same disadvantages as the last-mentioned one.
  • the design is very complex and the production is likely to be correspondingly expensive.
  • the ventilation device according to the invention can be designed to be compact and can have relatively low resistance to flow. Furthermore, troublesome development of noise can be kept very low. It can have a simple design and be capable of being manufactured correspondingly economically.
  • FIG. 1 shows a perspective view of the air cooling element according to the invention, obliquely from above, with a ceiling removed,
  • FIG. 2 shows a horizontal longitudinal section through the ventilation element according to the invention of FIG. 1 , corresponding to II-II in FIG. 3 , and
  • FIG. 3 shows a cross-section through the ventilation element according to the invention, along III-III in FIG. 2 .
  • the ventilation device comprises a cuboid housing having a base 1 , a ceiling 2 , side walls 3 a,b and end walls 4 a,b .
  • the interior of the housing is further divided by two intermediate walls 5 , 6 parallel to the end walls 4 a,b .
  • Between the first intermediate wall 5 and the end wall 4 a is a short inlet chamber 7 which is connected to the outer space by a narrow rectangular air supply inlet 8 .
  • Deflecting walls 9 which are parallel to the end wall 4 b and in each case extend over a part of the cross-section are installed as turbulence-generating baffles in the inlet chamber 8 .
  • a short outlet chamber 10 which is connected by a rectangular air supply outlet 11 in the side wall 3 a to the space to be ventilated.
  • first intermediate wall 5 Between the first intermediate wall 5 and the second intermediate wall 6 is a relatively long cavity 12 of rectangular cross-section.
  • Parallel pipes 13 which are a distance apart laterally and connect the inlet chamber 8 to the outlet chamber 10 , are led through the first intermediate wall 5 , run in the longitudinal direction through the cavity 12 , distributed approximately uniformly over the cross-section, and pass through the second intermediate wall 6 .
  • the first intermediate wall 5 On the side facing away from the inlet chamber 8 , the first intermediate wall 5 has an insulating layer so that the inlet chamber 8 is thermally insulated from the cavity 12 .
  • the side wall 3 b too, has on its inside an insulating layer which thermally insulates the inlet chamber 8 , the cavity 12 and the outlet chamber 10 from the outside.
  • the side wall 3 a has an insulating layer on the inside so that the inside chamber 8 is also thermally insulated from the room to be ventilated.
  • a partition 14 Arranged parallel to the side wall 3 a is a partition 14 which extends from the first intermediate wall 5 towards the second intermediate wall 6 in such a way that a rectangular passage 15 to the cavity 12 remains free there. Adjacent to the first intermediate wall 5 , a rectangular waste air inlet 16 passes through the side wall 3 a . A rectangular waste air outlet 17 in which a fan 18 is mounted passes through the opposite side wall 3 b , likewise adjacent to the first intermediate wall 5 .
  • the cavity 12 together with the pipes 13 forms a countercurrent heat exchanger having an exchange section of an air supply channel which connects the air supply inlet 8 to the air supply outlet 11 and is formed by the space enclosed by the pipes 13 , while the remaining part of the cavity 12 forms an exchange section of a waste air channel connecting the waste air inlet 16 to the waste air outlet 17 .
  • the two exchange sections have a close heat-conducting connection through the pipes 13 .
  • the region located between the side wall 3 a and the partition 14 forms a supply line section 19 of the waste air channel, which section connects the waste air inlet 16 to the exchange section of the waste air channel and, running counter to the exchange section, extends up to the passage 15 .
  • the supply line section 19 is connected to the cavity 12 by a plurality of short-circuit connections staggered in the longitudinal direction—in the example three of said connections. They are formed by openings in the partition 14 which are in the form of narrow slots 20 a,b,c . By means of projections on the partition 14 , constrictions are created in each case directly before the slots 20 b,c so that the supply line section 19 widens directly at the slots 20 b,c . At the slot 20 a , the supply line section 19 likewise widens since, up to this opening, the partition 14 comprises an insulating layer thermally insulating the supply line section 19 from the cavity 11 and hence from the exchange section of the waste air channel and is therefore thicker. Between the slots 20 a,b,c and the passage 15 , the supply line section 19 has further constrictions which are formed by projections on the side wall 3 a.
  • Suitable materials for the base 1 , the cover 2 , the side walls 3 a,b , the end walls 4 a,b , the intermediate walls 5 , 6 , the deflecting walls 9 and the partition 14 are wood, metal, plastic, pressboards and the like, it being possible for the insulating layers to consist of foam, e.g. polyurethane foam.
  • the pipes 13 must consist of material having good thermal conductivity. Metals, such as aluminium, steel or copper, are suitable.
  • the waste air stream is shown in the figures by means of a single arrow and the air supply stream by means of a double arrow.
  • the fan 18 By means of the fan 18 , waste air is sucked out of the room to be ventilated through the waste air channel and is ejected. Noise pollution of the room is substantially avoided by the arrangement of the fan 18 in the region of the waste air outlet 17 .
  • the waste air passes through the waste air inlet 16 into the ventilation device and flows through the supply line section 19 and the exchange section in the cavity 12 to the waste air outlet 17 .
  • fresh air is sucked in at the air supply inlet 8 and is passed through the air supply channel and the air supply outlet 11 into the room. Owing to leaks in the room, the air supply stream is usually smaller than the waste air stream.
  • a part of the waste air stream remains up to the passage 15 , where it is deflected through 1800 and passes into the cavity 12 , in the air supply section 19 , where it is thermally insulated from the exchange section of the air supply channel.
  • Other parts thereof are, however, branched off upstream of the passage 15 through the slots 20 a,b,c out of the air supply section 19 and pass further downstream into the waste air stream in the cavity 12 , i.e. into the exchange section of the waste air channel.
  • Parts of the cavity 12 are therefore bridged by the slots 20 a,b,c , the entry point of the short-circuit connection being the further downstream in the cavity 12 the further upstream its branching point is located in the air supply section 19 .
  • the bridged part is relatively short in the case of the slot 20 c but is substantially more than half the length of the cavity 12 in the case of the slot 20 a.
  • the slots 20 a,b,c are dimensioned so that they each branch off about 10-15% of the total waste air stream, and the proportion of the waste air stream which in this way bypasses a smaller or larger part of the exchange section of the waste air channel is altogether about 25-50%. It has been found that this short-circuiting of parts of the exchange section by parts of the waste air stream surprisingly improves the efficiency of the ventilation device.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Chemical & Material Sciences (AREA)
  • Duct Arrangements (AREA)
  • Compressor (AREA)
  • Percussion Or Vibration Massage (AREA)
  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
  • Devices For Use In Laboratory Experiments (AREA)
  • Air Conditioning Control Device (AREA)
  • Ventilation (AREA)
US10/927,896 2003-08-27 2004-08-27 Ventilation device and method for its operation Abandoned US20050103483A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP03405618.4 2003-08-27
EP03405618A EP1510764B1 (de) 2003-08-27 2003-08-27 Lüftungseinrichtung und Verfahren zu ihrem Betrieb

Publications (1)

Publication Number Publication Date
US20050103483A1 true US20050103483A1 (en) 2005-05-19

Family

ID=34089786

Family Applications (1)

Application Number Title Priority Date Filing Date
US10/927,896 Abandoned US20050103483A1 (en) 2003-08-27 2004-08-27 Ventilation device and method for its operation

Country Status (5)

Country Link
US (1) US20050103483A1 (de)
EP (1) EP1510764B1 (de)
AT (1) ATE502265T1 (de)
DE (1) DE50313546D1 (de)
DK (1) DK1510764T3 (de)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20080271874A1 (en) * 2007-05-04 2008-11-06 John Gietzen Thermal energy exchanger
EP2077428A3 (de) * 2007-09-18 2010-02-03 Vent-Axia Group Limited Wärmetauscher, Wärmetauscherelement dafür und Verfahren zur Montage eines Wärmetauscherelements
US20110132583A1 (en) * 2008-05-29 2011-06-09 Pierre Vironneau Double flow heat exchanger device

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3735811A (en) * 1970-07-17 1973-05-29 Bbc Sulzer Turbomaschinen Heat exchanger
US4579163A (en) * 1983-03-29 1986-04-01 Maendel Jonathan P Heat exchanger core and air flow control
US4722683A (en) * 1986-03-14 1988-02-02 Vulcan-Hart Corporation Rethermalization oven

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE853202C (de) * 1949-07-30 1952-10-23 Hans Studer Zur Rueckgewinnung von Waerme aus der Abluft zur Vorwaermung der Frischluft geeignete Einrichtung zur Raumlueftung
GB678342A (en) * 1949-09-26 1952-09-03 Sulzer Ag Improvements relating to heat exchangers
DE2842974A1 (de) * 1978-10-02 1980-04-10 Hermann Dieterichs Vorrichtung fuer die klimatisierung von raeumen mit entsprechendem luftwechsel, insbesondere bei gefluegel-maststaellen
DE3230279A1 (de) 1982-08-14 1984-02-16 Fulgurit Gmbh & Co Kg Vorrichtung zur raumbelueftung
DE3347028A1 (de) 1983-12-24 1985-07-04 Greschbach Industrie GmbH & Co, 7834 Herbolzheim Fenster
DE3426778A1 (de) 1984-07-20 1985-05-02 Werner G.K. 2000 Hamburg Lange Vorrichtung zum austausch von waerme-energie zwischen luftstroemen zur rueckgewinnung von lueftungswaerme
JPS62206381A (ja) * 1986-03-06 1987-09-10 Nippon Furuuto Kk 熱交換装置
DE3643303A1 (de) * 1986-12-18 1988-06-30 Uhde Gmbh Vorrichtung zum waermetausch, insbesondere zwischen synthesegas- und kesselspeisewasser
GB9420731D0 (en) 1994-10-14 1994-11-30 Stokes Keith H An improved heat exchange ventilator
ATE397193T1 (de) 2001-11-01 2008-06-15 Albisrieden Fenster Lüftungseinrichtung

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3735811A (en) * 1970-07-17 1973-05-29 Bbc Sulzer Turbomaschinen Heat exchanger
US4579163A (en) * 1983-03-29 1986-04-01 Maendel Jonathan P Heat exchanger core and air flow control
US4722683A (en) * 1986-03-14 1988-02-02 Vulcan-Hart Corporation Rethermalization oven

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20100186927A1 (en) * 2006-05-04 2010-07-29 John Gietzen Thermal energy exchanger
US8256497B2 (en) 2006-05-04 2012-09-04 John Gietzen Thermal energy exchanger
US20080271874A1 (en) * 2007-05-04 2008-11-06 John Gietzen Thermal energy exchanger
EP2077428A3 (de) * 2007-09-18 2010-02-03 Vent-Axia Group Limited Wärmetauscher, Wärmetauscherelement dafür und Verfahren zur Montage eines Wärmetauscherelements
US20110132583A1 (en) * 2008-05-29 2011-06-09 Pierre Vironneau Double flow heat exchanger device

Also Published As

Publication number Publication date
DE50313546D1 (de) 2011-04-28
DK1510764T3 (da) 2011-07-04
ATE502265T1 (de) 2011-04-15
EP1510764B1 (de) 2011-03-16
EP1510764A1 (de) 2005-03-02

Similar Documents

Publication Publication Date Title
US9022098B2 (en) Multistage heat exchanging duct comprising a parallel conduit
KR101517346B1 (ko) 천장형 공기조화기
GB2299656A (en) Outdoor unit of an air-conditioner
JP5079857B2 (ja) 空気調和機の室内機
US5000253A (en) Ventilating heat recovery system
JP2000308311A (ja) 回転電機
US20170336150A1 (en) Ventilating Device with Alternating Airflows
CA2540674A1 (en) Device for moisture exchange between gas flows
JPS6314276Y2 (de)
US8443618B2 (en) Refrigerating and/or freezing appliance
AU2023336556A1 (en) Air conditioning system using indirect evaporative cooling
CN100455971C (zh) 热交换器
US7028752B2 (en) Ventilation device
FI96238C (fi) Ilmanvaihtolaite huonetiloissa samanaikaisesti tapahtuvaa ilman syöttämistä ja poistamista varten
CN113692176B (zh) 电气系统
JP2009180395A (ja) 熱交換装置とそれを用いた発熱体収納装置
KR100975102B1 (ko) 환기장치용 열교환기
EP3465058B1 (de) Niedertemperatur-radiator
JP4033576B2 (ja) 低温ショーケース
EP1134536A2 (de) Wärmetauscher
US9746200B2 (en) Building ventilator
CN106438481A (zh) 用于空调器贯流风机的壳体和空调器
CN102893713B (zh) 传热方法及装置
JP5009409B2 (ja) 熱交換器及びそれを搭載した空気調和機
JPS6326293B2 (de)

Legal Events

Date Code Title Description
AS Assignment

Owner name: FENSTERFABRIK ALBISRIEDEN AG, SWITZERLAND

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:BUHLMANN, BERNHARD;REEL/FRAME:016415/0360

Effective date: 20041130

STCB Information on status: application discontinuation

Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION