EP2041498A1 - Échangeur d'humidité comprenant un dispositif de nettoyage - Google Patents

Échangeur d'humidité comprenant un dispositif de nettoyage

Info

Publication number
EP2041498A1
EP2041498A1 EP07786970A EP07786970A EP2041498A1 EP 2041498 A1 EP2041498 A1 EP 2041498A1 EP 07786970 A EP07786970 A EP 07786970A EP 07786970 A EP07786970 A EP 07786970A EP 2041498 A1 EP2041498 A1 EP 2041498A1
Authority
EP
European Patent Office
Prior art keywords
cavity
cleaning
cleaning fluid
hot steam
moisture exchanger
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.)
Withdrawn
Application number
EP07786970A
Other languages
German (de)
English (en)
Inventor
Urs A. Weidmann
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.)
Mentus Holding AG
Original Assignee
Mentus Holding 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 Mentus Holding AG filed Critical Mentus Holding AG
Publication of EP2041498A1 publication Critical patent/EP2041498A1/fr
Withdrawn legal-status Critical Current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
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/26—Drying gases or vapours
    • B01D53/268—Drying gases or vapours by diffusion
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D65/00—Accessories or auxiliary operations, in general, for separation processes or apparatus using semi-permeable membranes
    • B01D65/02—Membrane cleaning or sterilisation ; Membrane regeneration
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D65/00—Accessories or auxiliary operations, in general, for separation processes or apparatus using semi-permeable membranes
    • B01D65/02—Membrane cleaning or sterilisation ; Membrane regeneration
    • B01D65/027—Cleaning of other parts of the apparatus than the membrane
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2321/00—Details relating to membrane cleaning, regeneration, sterilization or to the prevention of fouling
    • B01D2321/08—Use of hot water or water vapor
    • 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
    • F24F2003/1435—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 comprising semi-permeable membrane
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F2221/00—Details or features not otherwise provided for
    • F24F2221/22—Cleaning ducts or apparatus
    • F24F2221/225—Cleaning ducts or apparatus using a liquid

Definitions

  • the present invention relates to a moisture exchanger for exchanging moisture between two air streams having two cavities separated by a water vapor permeable structure.
  • a moisture exchanger for the exchange of moisture between two air streams is known.
  • Such a moisture exchanger essentially comprises two cavities which are separated by a water vapor permeable structure.
  • the water vapor permeable structure separates the two air streams, but allows the exchange of moisture between the two air streams.
  • the air flow to be dehumidified is passed through the first cavity, the air flow to be humidified is passed through the second cavity.
  • Particularly advantageous is the embodiment with two such moisture exchangers, which are interconnected by a closed air circuit.
  • the first air stream consists of outside air, which is to be supplied as conditioned supply air to a room
  • the second air stream consists of exhaust air, which is to be discharged from the room and discharged as exhaust air to the environment, wherein the moisture contained in the exhaust air by means of one or two such moisture exchanger should be transferred to the supply air.
  • EP 1521040 it is further known to purify such a moisture exchanger with water, wherein the water can be heated by means of a heating element.
  • the achievable degree of purity does not meet all the requirements of the practice.
  • the object of the invention is to improve the cleaning of a moisture exchanger which has two cavities separated by a water-vapor-permeable structure in such a way that a high degree of purity in the cavities can be achieved.
  • the cavities should be able to be approximately or completely sterilized.
  • a moisture exchanger for exchanging moisture between a first air stream and a second air stream includes two cavities separated by a water vapor permeable structure, wherein the first air stream flows through the first cavity and the second air stream flows through the second cavity.
  • the moisture exchanger also contains a cleaning device, the Cleaning module, at least one line system and at least one pump includes.
  • the cleaning module provides a cleaning fluid.
  • the cleaning module is connected via the conduit system with the first cavity and / or the second cavity.
  • the cleaning device comprises at least one pump for pumping cleaning fluid out of the cleaning module into the first cavity and / or the second cavity and / or pumping it out. With the cleaning device, the first cavity and / or the second cavity and / or the water vapor-permeable structure can be cleaned in an efficient manner in such a way that a high degree of purity is achieved.
  • the cleaning module may provide a gaseous or a liquid cleaning fluid. Pure water (H 2 O) in a liquid state is not considered a cleaning fluid.
  • hot steam is suitable as the cleaning fluid, and in a preferred exemplary embodiment the cleaning module is set up to generate hot steam.
  • the cleaning module advantageously comprises an additive device which serves to mix at least one liquid or gaseous additive with the cleaning fluid.
  • Fig. 1 shows a schematic view of an exemplary first moisture exchanger according to the prior art
  • Fig. 2 shows a schematic view of the moisture exchanger of Figure 1 with a cleaning device according to a first embodiment of the present invention.
  • FIG. 3 shows a schematic view of the device of 1 with a cleaning device according to a second embodiment of the present invention
  • Fig. 4 shows a schematic view of an exemplary
  • FIG. 5 shows a schematic view of the device of FIG
  • FIG. 1 shows a schematic perspective view of a moisture exchanger known for example from EP 1521040.
  • the moisture exchanger contains a first cavity 1 and a second cavity 2.
  • the first cavity 1 is separated from the second cavity 2 by a water vapor permeable structure, for example a water vapor permeable membrane 3.
  • a water vapor permeable structure for example a water vapor permeable membrane 3.
  • any structure that transmits water vapor but blocks it from other gases and other molecules can be used.
  • Such a structure may also be a porous rigid material.
  • the first cavity 1 is flowed through by a first air flow, which enters the cavity 1 as an air flow 11 through an inlet opening 21 and exits through an outlet opening 22 as air flow 12 from the cavity 1, while the second cavity 2 flows through a second air flow is, which enters through an inlet opening 23 through as air flow 13 into the cavity 1 and exits through an outlet opening 24 as air flow 14 from the cavity 2.
  • the two cavities 1, 2 are preferably designed such that the air is guided meander-shaped through the cavities 1 and 2 and the inlet openings 21, 23 and the outlet openings 22, 24 are arranged on top of the moisture exchanger.
  • Fig. 2 shows schematically a plan view of a first embodiment according to the present invention.
  • the moisture exchanger comprises the first cavity 1, the second cavity 2 and a water vapor permeable membrane 3, which separates the first cavity 1 from the second cavity 2, and a cleaning device.
  • the first cavity 1 has at least one inlet opening 15 and at least one outlet opening 16.
  • the cleaning device comprises a cleaning module 5, piping systems 6 and 7 and at least one pump 9.
  • the piping system 6 connects the cleaning module 5 to the first cavity 1.
  • the piping system 6 comprises a supply line 61, which the cleaning module 5 via the inlet opening 15 with the first cavity 1 connects, and a discharge line 62, which connects the first cavity 1 via the outlet opening 16 with the cleaning module 5.
  • the second cavity 2 is connected to the cleaning module 5.
  • the line system 7 which comprises a feed line 71 and a discharge line 72.
  • the supply line 71 connects the cleaning module 5 via the inlet opening 17 with the second cavity 2.
  • the discharge line 72 connects the second cavity 2 via the outlet opening 18 with the cleaning module 5.
  • the supply line 61 and the supply line 71 may be a common line which is short before reaching the inlet openings 15, 17 divides into two lines.
  • the cleaning module 5 is configured such that it is capable of providing a cleaning fluid. Suitable cleaning fluids are gaseous, vaporous or liquid substances.
  • the cleaning fluid serves to clean the first cavity 1, the second cavity 2 and the membrane 3.
  • the walls delimiting the cavities and also other parts connected to the cavities 1, 2, such as fittings, etc. , by the cleaning fluid cleaned.
  • hot steam is used as the cleaning fluid.
  • the cleaning module 5 is provided with a corresponding device 55, which can generate hot steam.
  • the device 55 is for example a steam generator.
  • the hot steam With the hot steam, the cavities 1, 2 and the membrane 3 can be sterilized.
  • the temperature of the hot steam depends on the desired degree of sterilization. It is typically in the range of 100 to 120 0 C.
  • the hot steam is under a certain pressure.
  • the cavities 1, 2 and the diaphragm 3 are accordingly formed pressure resistant.
  • the cleaning module 5 therefore preferably contains an additive device 56 which can add additives to the cleaning fluid.
  • the additives may have gaseous or liquid state of aggregation. It can be admixed only a single additive or an additive mixture consisting of at least two additives.
  • the cleaning device is also preferably equipped with a flushing device, so that it can after the cleaning process at least the first cavity 1, through which the fresh outside air flows, which enters the room as supply air in normal operation, during a predetermined period of time can flush with outside air without them Air enters the room.
  • the flushing device consists of a fitting 66 and a pipe piece 67 which connects the first cavity 1 and the second cavity 2.
  • the valve 66 is, for example, a flap which covers the outlet opening 22 in the flushing operation and the inlet to the pipe section 67 in normal operation.
  • the incoming outside air enters the cavity 1, flows through the cavity 1, is guided at the outlet of the cavity 1 into the cavity 2, flows through the cavity 2 and enters the outside. In this way, unpleasant odors are removed from the cavities 1 and 2, without getting into the room to be supplied with supply air.
  • the cleaning can be mechanically supported with shock, sound and / or ultrasonic waves.
  • an element 30 is provided, which is able to deliver energy, in particular longitudinally propagating waves.
  • the element 30 is, for example, an ultrasound generator if ultrasound cleaning is to be supported.
  • the element 30 is preferably arranged on the bottom of the cavity 1 or 2, either inside or outside the cavity, so that the energy can be transferred to the cleaning fluid in an efficient manner even at low levels of the cleaning fluid.
  • Both in the supply lines 61, 71 and in the discharge lines 62, 72 pumps 9 can be arranged for the circulation of the cleaning fluid.
  • a respective pump 9 in the supply lines 61, 71 and in the discharge lines 62, 72 are arranged.
  • the pumps 9 promote the cleaning fluid through the conduit system 6 and 7 and through the cavities 1, 2. If a common supply line and a common defense line used, so only one pump 9 must be arranged. If the pump 9 can request the cleaning fluid in two directions, it is possible to remove contaminated cleaning fluid with the pump 9 again from the cavities 1, 2.
  • the cleaning fluid is then supplied via the supply lines 61, 71 to the first cavity 1 and the second cavity 2 and discharged via the supply lines 61, 71.
  • the discharge lines 62, 72 are omitted in this case.
  • FIG. 3 shows a further exemplary embodiment according to the present invention, in which the cleaning fluid passes out of the first cavity 1 via the first inlet opening 15 into the first cavity 1 and via the second outlet opening 16.
  • a pipeline piece 63 then passes the cleaning fluid via the inlet opening 17 into the second cavity 2.
  • About the Auslasso réelle 18 leaves the cleaning fluid the second cavity 2 again.
  • the cleaning fluid as shown, the cleaning module 5 are supplied, or alternatively be removed elsewhere. It is also possible to let the cleaning fluid flow first through the second cavity 2 and then through the first cavity 1.
  • the moisture exchanger with the integrated cleaning device includes a control unit that controls the operation.
  • Various operating modes for the cleaning of the cavities 1, 2 are possible, which can be used both individually and in combination. Five operating modes are explained below.
  • the cleaning fluid is required in the first cavity 1 and the second cavity 2. After a certain exposure time has elapsed, which can take several minutes to several hours, the contaminated cleaning fluid is expelled again from the first cavity 1 or from the second cavity 2. promoted.
  • the exposure time is typically 10 to 25 minutes, but it may be shorter or longer.
  • the two cavities 1, 2 must be pressure-resistant in this case. This operating mode is particularly suitable for sterilizing the cavities 1, 2.
  • the cleaning fluid is supplied via the supply lines 61, 71 to the first cavity 1 and the second cavity 2, respectively.
  • the cleaning fluid absorbs the impurities deposited in the two cavities 1, 2.
  • the contaminated cleaning fluid is discharged via the outlet openings 16 and 18 from the two cavities 1, 2 and fed back to the cleaning module 5 via the discharge lines 62, 72.
  • the cleaning fluid is permanently conveyed through the first cavity 1 and the second cavity 2 for a predetermined period of time.
  • the cleaning fluid is conveyed through the first cavity 1 or the second cavity 2 in short pressure surges.
  • This operating mode is only possible if hot steam is used as the cleaning fluid, because it is based on the permeability of the membrane 3 for water vapor.
  • the hot steam is supplied to the first cavity 1 via the supply line 61, for example.
  • the hot steam penetrates through the water vapor permeable Diaphragm 3 through and into the second cavity 2 a. This is illustrated in FIG. 2 with an arrow 100.
  • This operating mode is based on mode 4.
  • the hot steam is allowed to flow in a first phase only in the cavity 1 and leads the hot steam, which has penetrated through the membrane 3, from the cavity 2 from.
  • a second phase fresh hot steam is allowed to flow only into the cavity 2 and leads the hot steam, which has penetrated through the membrane 3, out of the cavity 1.
  • the pores of the membrane 3 are cleaned very well.
  • the cleaning takes place in a first phase according to the operating mode 1, in which the cleaning fluid in the first cavity 1 and / or the second cavity 2 is required and discharged after the contact time again from the cavities.
  • the cleaning is carried out according to the operating mode 3, in which the cleaning fluid in one or more short pressure surges through the cavities 1, 2 is required.
  • the contaminated cleaning fluid is either disposed of by hand or discharged directly to the environment or recycled by the cleaning module 5.
  • the cleaning module 5 is equipped for this purpose with appropriate means.
  • Fig. 4 shows schematically a device for the exchange of moisture between two air streams containing two moisture exchangers 42 and 43, which are interconnected by a closed circuit.
  • a device for the exchange of moisture between two air streams containing two moisture exchangers 42 and 43, which are interconnected by a closed circuit.
  • Such a device is known from EP 1521040.
  • Each moisture exchanger 42, 43 contains the two cavities 1 and 2.
  • the cavity 2 of the first moisture exchanger 42 is connected via a closed air circuit with the cavity 1 of the second moisture exchanger 43.
  • the closed air circuit consists of the air streams 81, 82, 83 and 84. Pumps or fans 40, 41 allow the air to circulate in the closed air circuit.
  • FIG. 5 shows the two moisture exchangers 42, 43 in a schematic view.
  • a separate cleaning module 5 or 5 ' is provided for each of the moisture exchangers 42, 43.
  • the features of the cleaning devices and also their arrangement are identical to those, as they have already been explained with reference to FIG. 2.
  • the moisture exchangers 42, 43 can be cleaned with the cleaning devices in the manner described above.
  • the two moisture exchangers 42, 43 have a single, common cleaning module 5.
  • the line system is adjusted accordingly.
  • a flushing device be provided to flush the cavities 1, 2 of the two moisture exchangers 42, 43 after the cleaning process with outside air.
  • the cleaning fluid can be supplied to the corresponding cavities or the membrane via the existing and necessary for the operation of the moisture exchanger air channels. This is possible, for example, if alcohol is used as the cleaning fluid.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Analytical Chemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Separation Using Semi-Permeable Membranes (AREA)
  • Cleaning By Liquid Or Steam (AREA)

Abstract

L'invention concerne un échangeur d'humidité pour l'échange d'humidité entre un premier courant d'air et un second courant d'air, contenant un premier espace creux (1) et un second espace creux (2), qui sont séparés par une structure perméable à la vapeur d'eau, le premier espace creux (1) pouvant être traversé par le premier courant d'air et le second espace creux (2) pouvant être traversé par le second courant d'air. L'échangeur d'humidité contient également un dispositif de nettoyage comprenant un module de nettoyage (5), fournissant un fluide de nettoyage sous forme de liquide, de vapeur ou de gaz, qui permet de nettoyer le premier espace creux (1) et/ou le second espace creux (2). Le nettoyage peut être assisté par des ondes de choc, des ondes sonores et/ou des ondes ultrasonores.
EP07786970A 2006-07-03 2007-07-01 Échangeur d'humidité comprenant un dispositif de nettoyage Withdrawn EP2041498A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH01068/06A CH700200B1 (de) 2006-07-03 2006-07-03 Vorrichtung zur Be-/Entfeuchtung von Raumluft sowie Verfahren zur Reinigung einer solchen Vorrichtung.
PCT/EP2007/056615 WO2008003663A1 (fr) 2006-07-03 2007-07-01 Échangeur d'humidité comprenant un dispositif de nettoyage

Publications (1)

Publication Number Publication Date
EP2041498A1 true EP2041498A1 (fr) 2009-04-01

Family

ID=37757299

Family Applications (1)

Application Number Title Priority Date Filing Date
EP07786970A Withdrawn EP2041498A1 (fr) 2006-07-03 2007-07-01 Échangeur d'humidité comprenant un dispositif de nettoyage

Country Status (5)

Country Link
US (1) US20100018393A1 (fr)
EP (1) EP2041498A1 (fr)
CH (1) CH700200B1 (fr)
TW (1) TW200819686A (fr)
WO (1) WO2008003663A1 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE1018113A3 (nl) * 2008-05-05 2010-05-04 Clima & Partners Bv Met Bepert Inrichting voor het behandelen van lucht van een ruimte.
CN106998714A (zh) * 2014-12-03 2017-08-01 皇家飞利浦有限公司 湿度调节
CN116772348B (zh) * 2023-08-17 2023-11-03 山东亿润新能源科技有限公司 一种具有空气能除湿功能的空气净化装置及其方法

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3735559A (en) * 1972-02-02 1973-05-29 Gen Electric Sulfonated polyxylylene oxide as a permselective membrane for water vapor transport
JPS6019003A (ja) * 1983-07-14 1985-01-31 Nitto Electric Ind Co Ltd 膜モジユ−ルの運転方法
US6178966B1 (en) * 1998-04-16 2001-01-30 John E. Breshears Heat and moisture exchange apparatus for architectural applications
US6739142B2 (en) * 2000-12-04 2004-05-25 Amos Korin Membrane desiccation heat pump
FR2832082A1 (fr) * 2001-11-14 2003-05-16 Sedia Sarl Sonde pour mesurer une teneur en un gaz dissout d'un liquid et procede de nettoyage d'une membrane d'une telle sonde
ATE347076T1 (de) * 2003-10-01 2006-12-15 Imes Man Ag Vorrichtung zur entfeuchtung von raumluft

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2008003663A1 *

Also Published As

Publication number Publication date
US20100018393A1 (en) 2010-01-28
CH700200B1 (de) 2010-07-15
TW200819686A (en) 2008-05-01
WO2008003663A1 (fr) 2008-01-10

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