CA2042435A1 - Dehumidification apparatus - Google Patents

Dehumidification apparatus

Info

Publication number
CA2042435A1
CA2042435A1 CA2042435A CA2042435A CA2042435A1 CA 2042435 A1 CA2042435 A1 CA 2042435A1 CA 2042435 A CA2042435 A CA 2042435A CA 2042435 A CA2042435 A CA 2042435A CA 2042435 A1 CA2042435 A1 CA 2042435A1
Authority
CA
Canada
Prior art keywords
duct
air
matrix
enclosure
desiccant containing
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
CA2042435A
Other languages
French (fr)
Other versions
CA2042435C (en
Inventor
Erling Berner
Rolf E. Berner
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.)
Carl Munters AB
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
Priority claimed from US07/523,612 external-priority patent/US5050667A/en
Application filed by Individual filed Critical Individual
Publication of CA2042435A1 publication Critical patent/CA2042435A1/en
Application granted granted Critical
Publication of CA2042435C publication Critical patent/CA2042435C/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F7/00—Ventilation
    • F24F7/04—Ventilation with ducting systems, e.g. by double walls; with natural circulation
    • F24F7/06—Ventilation with ducting systems, e.g. by double walls; with natural circulation with forced air circulation, e.g. by fan positioning of a ventilator in or against a conduit
    • F24F7/065—Ventilation with ducting systems, e.g. by double walls; with natural circulation with forced air circulation, e.g. by fan positioning of a ventilator in or against a conduit fan combined with single duct; mounting arrangements of a fan in a duct
    • 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F3/00—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems
    • F24F3/12—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling
    • F24F3/14—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling by humidification; by dehumidification
    • F24F3/1411—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling by humidification; by dehumidification by absorbing or adsorbing water, e.g. using an hygroscopic desiccant
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F3/00—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems
    • F24F3/12—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling
    • F24F3/14—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling by humidification; by dehumidification
    • F24F3/147—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling by humidification; by dehumidification with both heat and humidity transfer between supplied and exhausted air
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F3/00—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems
    • F24F3/12—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling
    • F24F3/14—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling by humidification; by dehumidification
    • F24F2003/1458—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling by humidification; by dehumidification using regenerators
    • 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

An apparatus and method for dehumidifying air includes a duct with at least four ports, two at each end. The ports are regulated by valves that are biased in the closed position. A
desiccant containing matrix is disposed within the duct. One or more fans are adapted to produce substantially axial air flow in two directions through the duct: a first direction during a regeneration phase of the dehumidifying cycle and a second direction during a process phase of the dehumidifying cycle. In the process direction, air from the enclosure enters one end of the duct, passes through the desiccant containing matrix where moisture is absorbed by the matrix and exits through the opposite end of the duct back to the enclosure. The air is thus at a lower relative humidity when it leaves the apparatus. Upon reversal of the air flow direction, the air is drawn into the duct from a source outside the enclosure, heated by a heater, passed through the desiccant containing matrix where moisture is absorbed from the matrix and exits through the opposite duct back into the source of air. The air is thus at a higher relative humidity when it is exhausted from the apparatus.
CA002042435A 1990-05-15 1991-05-13 Dehumidification apparatus Expired - Fee Related CA2042435C (en)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
US693,705 1985-01-23
US523,612 1990-05-15
US07/523,612 US5050667A (en) 1990-05-15 1990-05-15 Air ventilation and heat exchange apparatus
US07/693,705 US5230719A (en) 1990-05-15 1991-05-06 Dehumidification apparatus

Publications (2)

Publication Number Publication Date
CA2042435A1 true CA2042435A1 (en) 1991-11-16
CA2042435C CA2042435C (en) 2000-12-19

Family

ID=27061197

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002042435A Expired - Fee Related CA2042435C (en) 1990-05-15 1991-05-13 Dehumidification apparatus

Country Status (6)

Country Link
US (1) US5230719A (en)
JP (1) JP3276156B2 (en)
CA (1) CA2042435C (en)
DE (2) DE4115710A1 (en)
GB (1) GB2251393B (en)
SE (1) SE9101451L (en)

Families Citing this family (84)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4216387A1 (en) * 1992-02-03 1993-08-05 Erling Berner Device to reverse air flow in double ended shaft - comprises fixed fan with suction and output sides and shutters pivoted on opposite sides of shaft
CA2092365A1 (en) * 1992-11-30 1994-05-31 Erling Berner Dehumidification apparatus
DE19527638A1 (en) * 1995-07-28 1997-01-30 Behr Gmbh & Co Air drying device, in particular for motor vehicles
US5702508A (en) * 1996-01-25 1997-12-30 Moratalla; Jose Ceramic desiccant device
US5669962A (en) * 1996-03-15 1997-09-23 Uop Rapid thermal swing dryer for compressed gases
DE19638535C2 (en) * 1996-09-20 1999-05-20 Diels Manfred Ventilation system with heat recovery
JP3747569B2 (en) * 1997-05-23 2006-02-22 三菱電機株式会社 Static dehumidifier
DE19730019C1 (en) * 1997-07-12 1999-01-07 Diels Manfred Ventilation system with regenerative heat recovery
JPH11237737A (en) 1997-12-19 1999-08-31 Kansai Shingijutsu Kenkyusho:Kk Photosensitive resin composition and its production
US5980615A (en) * 1998-01-22 1999-11-09 Roe; Robert J. Compact air dryer
SG104251A1 (en) * 1998-01-26 2004-06-21 Kankyo Co Ltd Method and apparatus for dehumidifying air
DE19811469A1 (en) * 1998-03-17 1999-09-30 Rehfus Bernd Force ventilation of rooms and cabins
FR2778584B1 (en) * 1998-05-15 2000-08-04 Sextant Avionique DESICCATOR ENCLOSURE
US6280504B1 (en) 1998-09-18 2001-08-28 Mcmahon James P. Hygroscopic monolith having a channel therethrough for modifying a gas therein by adsorption or desorption, and processes therefor
US6273941B1 (en) * 1998-12-01 2001-08-14 Tycom (Us) Inc. Desiccant package having a controllable permeation rate for high reliability applications
US6468054B1 (en) * 1999-10-28 2002-10-22 Christopher L. Anthony Crawl space ventilator fan
US7238004B2 (en) * 1999-11-25 2007-07-03 Delta Electronics, Inc. Serial fan with a plurality of rotor vanes
US6471739B2 (en) * 1999-12-02 2002-10-29 Lg Electronics Inc. Dehumidifier housing
US6364937B1 (en) * 2000-05-10 2002-04-02 Mcmahon James P. Humidity control system
US6564858B1 (en) * 2000-07-17 2003-05-20 Liebert Corporation Overhead cooling system with selectively positioned paths of airflow
US6780227B2 (en) 2000-10-13 2004-08-24 Emprise Technology Associates Corp. Method of species exchange and an apparatus therefore
JP3608548B2 (en) * 2001-12-07 2005-01-12 ダイキン工業株式会社 Ventilator and air conditioner
US6772534B2 (en) 2002-03-15 2004-08-10 Bel-Art Products, Inc. Apparatus and method for moisture control
GB0227222D0 (en) * 2002-11-21 2002-12-24 Air Prod & Chem Apparatus for use in regenerating adsorbent
KR100661938B1 (en) * 2003-03-05 2006-12-28 닛본 덴끼 가부시끼가이샤 Cooler using filter with dehumidifying function
KR100691143B1 (en) * 2003-04-30 2007-03-09 삼성전기주식회사 Light emitting diode device with multi-layered phosphor
DE10353046A1 (en) * 2003-11-13 2005-06-09 Lessing, Jürgen Cooling device, in particular for cooling cold rooms
US20050189097A1 (en) * 2004-03-01 2005-09-01 The Boeing Company Formed sheet heat exchanger
KR100577206B1 (en) * 2004-05-21 2006-05-10 엘지전자 주식회사 Ventilation Systems
US6931755B1 (en) * 2004-10-04 2005-08-23 Tsang-Hung Hsu Dehumidifier as effected by moisture exchange
KR100620502B1 (en) * 2005-01-10 2006-09-13 정인숙 Heat exchanger and heat exchanging ventilator using the same
DE102006036753A1 (en) * 2006-08-05 2008-02-07 Rafail Rabkin Air dehumidifier for dehumidifying a room comprises a fan heater with a cyclic throw-over switch and a control unit triggered by a module for switching on and a module for switching off
US20080102744A1 (en) * 2006-10-31 2008-05-01 Everdry Marketing & Management, Inc. Ventilation system
CN100489403C (en) * 2007-05-22 2009-05-20 杨宁 Water steam purifier
WO2009002447A1 (en) 2007-06-21 2008-12-31 Gen-Probe Incorporated Instrument and receptacles for use in performing processes
CA2672897C (en) * 2008-07-23 2017-02-14 Tai-Her Yang Single flow circuit heat exchange device for periodic positive and reverse directional pumping
US20100255768A1 (en) * 2009-04-07 2010-10-07 Carrier Corporation Airflow economizer and method for operating the same
FR2947040B1 (en) * 2009-06-23 2014-01-03 Cinier Radiateurs REVERSIBLE RADIATOR
EP2325573B1 (en) 2009-11-19 2015-09-09 Poloplast GmbH & Co. KG Building ventilation device
DE202010012838U1 (en) * 2010-09-18 2010-12-02 Zehnder Verkaufs- Und Verwaltungs Ag System for room ventilation
US20120118143A1 (en) * 2010-11-17 2012-05-17 Foreman Ronald E Apparatus and method for dehumidifying air
EP3339756B1 (en) * 2010-12-22 2019-11-06 Mitsubishi Electric Corporation Air-conditioning system and humidity control device
EP2707656B1 (en) * 2011-05-13 2019-04-03 Inventilate Holding ApS Ventilation system with a rotatable air flow generator and one or more moveable registers and method for obtaing ventilation through the ventilation system
DE102011079427A1 (en) * 2011-07-19 2013-01-24 Behr Gmbh & Co. Kg Air dehumidification device of air dehumidification system installed in e.g. hybrid vehicle, guides air flow along air channel in adsorption direction during adsorption mode, and in desorption direction during desorption mode
WO2013061377A1 (en) * 2011-10-28 2013-05-02 三菱電機株式会社 Refrigeration and air-conditioning device, and humidity adjustment device
US8894478B1 (en) * 2012-01-06 2014-11-25 Woodrow Stillwagon Environmental improvement system
US9995538B2 (en) 2013-01-09 2018-06-12 Carrier Corporation Cleat arrangement for accessory installation to a heating or cooling system component
WO2014160459A1 (en) * 2013-03-13 2014-10-02 Bergstrom, Inc. Air conditioning system utilizing heat recovery ventilation for fresh air supply and climate control
US9157243B2 (en) * 2013-09-16 2015-10-13 Wickright, Inc. Construction device for releasing moisture from a building
DE102013017422A1 (en) 2013-10-19 2015-04-23 Astrid Hilchenbach Fan
WO2015065495A1 (en) 2013-11-04 2015-05-07 Bergstrom, Inc. Low profile air conditioning system
DE102014200538A1 (en) * 2014-01-14 2015-07-16 LUNOS Lüftungstechnik GmbH für Raumluftsysteme Ventilation unit for indoor ventilation in buildings
DE202014003368U1 (en) 2014-01-14 2014-07-23 LUNOS Lüftungstechnik GmbH für Raumluftsysteme Ventilation unit for indoor ventilation in buildings
EP3179873A2 (en) * 2014-08-11 2017-06-21 Albani, Ivan, Matteo Dynamic air intake
US9783024B2 (en) 2015-03-09 2017-10-10 Bergstrom Inc. System and method for remotely managing climate control systems of a fleet of vehicles
DE102015103594B3 (en) * 2015-03-11 2016-03-31 Hoval Aktiengesellschaft Ventilation unit and method for decentralized room ventilation
KR101626774B1 (en) * 2015-05-21 2016-06-02 박용국 Dehumidification apparatus for vehicle lamp
US9517432B1 (en) * 2015-06-24 2016-12-13 Hsiu-Fen Wang Dehumidifier
EP3280893B1 (en) * 2015-07-09 2019-01-09 Siemens Aktiengesellschaft Cooling device for use in a power plant
DE102015112077B3 (en) * 2015-07-24 2016-11-10 Hiwin Technologies Corp. Cooling method for a multi-axis controller
US9874384B2 (en) 2016-01-13 2018-01-23 Bergstrom, Inc. Refrigeration system with superheating, sub-cooling and refrigerant charge level control
JP2017133778A (en) * 2016-01-29 2017-08-03 株式会社デンソー Humidifier
US10589598B2 (en) 2016-03-09 2020-03-17 Bergstrom, Inc. Integrated condenser and compressor system
CN105757895A (en) * 2016-03-28 2016-07-13 广东美的制冷设备有限公司 Air conditioner and dehumidification control method thereof
PL232075B1 (en) * 2016-08-10 2019-05-31 Revolvent Spolka Akcyjna Device for regulation of air flow through a ventilation ducts
US10081226B2 (en) 2016-08-22 2018-09-25 Bergstrom Inc. Parallel compressors climate system
US10562372B2 (en) 2016-09-02 2020-02-18 Bergstrom, Inc. Systems and methods for starting-up a vehicular air-conditioning system
KR101856359B1 (en) * 2016-09-13 2018-05-10 현대자동차주식회사 Head lamp for vehicle with moisture removal apparatus
FR3056707B1 (en) * 2016-09-29 2021-10-29 Eoletec POSITIVE VENTILATION DEVICE
US10675948B2 (en) 2016-09-29 2020-06-09 Bergstrom, Inc. Systems and methods for controlling a vehicle HVAC system
US10369863B2 (en) 2016-09-30 2019-08-06 Bergstrom, Inc. Refrigerant liquid-gas separator with electronics cooling
US10724772B2 (en) 2016-09-30 2020-07-28 Bergstrom, Inc. Refrigerant liquid-gas separator having an integrated check valve
FR3064722B1 (en) * 2017-03-28 2020-10-23 Aml Systems DEVICE SUITABLE TO BE USED TO DEHUMIDIFY A CLOSED VEHICLE HEADLIGHT HOUSING OR TO PREVENT THE APPEARANCE OF MOISTURE IN SUCH CLOSED HOUSING.
US11448441B2 (en) 2017-07-27 2022-09-20 Bergstrom, Inc. Refrigerant system for cooling electronics
PL233744B1 (en) * 2017-09-13 2019-11-29 Bartlomiej Adamski Single-duct supply-exhaust ventilation system with heat recovery on the whole length of the system.
CN111133254A (en) * 2017-09-29 2020-05-08 大金工业株式会社 Air composition adjusting device
US11420496B2 (en) 2018-04-02 2022-08-23 Bergstrom, Inc. Integrated vehicular system for conditioning air and heating water
FR3082279B1 (en) * 2018-06-08 2021-06-11 Valeo Vision AIR EXTRACTOR FOR AUTOMOTIVE VEHICLE PROJECTOR
FR3083180B1 (en) * 2018-06-29 2022-04-15 Valeo Vision METHOD FOR CONTROLLING A HEADLIGHT AIR EXTRACTOR FOR A MOTOR VEHICLE.
CN109490503A (en) * 2018-12-25 2019-03-19 河北华厚天成环保技术有限公司 A kind of anti-condensation water quality testing meter
CN109876611B (en) * 2019-03-01 2024-02-13 张剑明 Automatic air treatment device
WO2020213655A1 (en) * 2019-04-15 2020-10-22 ダイキン工業株式会社 Air conditioning system
EP4103845A4 (en) * 2020-02-11 2024-02-21 Les Entreprises De Dev Durable Energie Solutions Et Associes Inc Multi-modes air handling system and method
US11137130B1 (en) * 2020-09-01 2021-10-05 Ford Global Technologies, Llc Vehicle lighting assembly condensation management system and method

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1225821A (en) * 1968-01-26 1971-03-24
DE6937165U (en) * 1969-09-20 1970-03-19 Friedhelm Laubkemeier INDOOR AIR REGENERATOR
NO137706L (en) * 1974-01-21
DE2712943C3 (en) * 1977-03-24 1981-03-26 Günter 76872 Minfeld Keller Method and device for heating and ventilating houses and rooms
DE3224277A1 (en) * 1982-06-28 1983-12-29 Ltg Lufttechnische Gmbh, 7000 Stuttgart Method and heat-recovery system for regenerative heat exchange
SE452254B (en) * 1985-03-15 1987-11-23 Munters Ab Carl SET AND DEVICE FOR REGENERATION OF A STATION EXCHANGE BODY
US4744409A (en) * 1985-08-01 1988-05-17 Erling Berner Valve assembly for air treatment apparatus
DE3613942A1 (en) * 1986-04-24 1987-10-29 Erich Klawitter Deaeration and aeration installation with a heat accumulator
US4952283A (en) * 1988-02-05 1990-08-28 Besik Ferdinand K Apparatus for ventilation, recovery of heat, dehumidification and cooling of air
US5055667A (en) * 1990-06-21 1991-10-08 Loral Fairchild Corporation Non-linear photosite response in CCD imagers

Also Published As

Publication number Publication date
DE9116290U1 (en) 1992-08-13
GB9110400D0 (en) 1991-07-03
JP3276156B2 (en) 2002-04-22
GB2251393B (en) 1994-08-31
GB2251393A (en) 1992-07-08
SE9101451L (en) 1991-11-16
JPH04227816A (en) 1992-08-17
DE4115710A1 (en) 1992-04-16
US5230719A (en) 1993-07-27
CA2042435C (en) 2000-12-19
SE9101451D0 (en) 1991-05-14

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