EP1703220A1 - Arrangement pour humidifier de l'air conditionné - Google Patents

Arrangement pour humidifier de l'air conditionné Download PDF

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Publication number
EP1703220A1
EP1703220A1 EP06002593A EP06002593A EP1703220A1 EP 1703220 A1 EP1703220 A1 EP 1703220A1 EP 06002593 A EP06002593 A EP 06002593A EP 06002593 A EP06002593 A EP 06002593A EP 1703220 A1 EP1703220 A1 EP 1703220A1
Authority
EP
European Patent Office
Prior art keywords
steam generator
line
steam
collector
condensate
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
EP06002593A
Other languages
German (de)
English (en)
Other versions
EP1703220B1 (fr
Inventor
Karl Haubner
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.)
M+W Zander Products GmbH
Original Assignee
M+W Zander Holding AG
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Publication date
Application filed by M+W Zander Holding AG filed Critical M+W Zander Holding AG
Publication of EP1703220A1 publication Critical patent/EP1703220A1/fr
Application granted granted Critical
Publication of EP1703220B1 publication Critical patent/EP1703220B1/fr
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F6/00—Air-humidification, e.g. cooling by humidification
    • F24F6/18—Air-humidification, e.g. cooling by humidification by injection of steam into the air

Definitions

  • the invention relates to a device for humidifying process air according to the preamble of claim 1.
  • the water in the steam generator is heated and fed the resulting vapor of the process air. Since untreated water is calcareous, the degree of hardness of the water in the steam generator through the evaporation process is constantly increasing. Therefore, at regular intervals, a drainage process in which the enriched water in the steam generator is completely or partially replaced by fresh water. As a result, the evaporation process is reduced for a certain time or completely interrupted until the water reservoir has reached a stable temperature again.
  • the invention has the object of providing the generic device in such a way that a stable humidification performance is made possible easily and inexpensively.
  • a two-stage steam generation is used.
  • the vapor formed in the first steam generator is condensed in the condenser.
  • This condensate is fed to the further steam generator, which vaporizes it.
  • the resulting vapor is introduced into the process air.
  • Tap water can be used for the device.
  • the power of the two steam generators can be coordinated so that the steam generation of the first steam generator for a Abschlämmvorgang can be interrupted briefly while the other steam generator still contains so much condensate that during the Abschlämmvon revitalizes the steam generation can be continued at the other steam generator.
  • the device is used for humidifying gaseous media, in particular air. It is used for example in process equipment, such as those used in semiconductor production or in the production of CDs, as well as in the pharmaceutical sector, in Feinmeß responsibility or climatic chambers.
  • the device has a first distiller or steam generator 1, a condenser 2, a collector 3 and a second steam generator 4.
  • the first steam generator 1 is formed in a known manner as Elektrodendampfbefeuchter. It has a supply line 5 for tap water and a drain line 6, in which a Abschlämmpumpe 7 is located. About them in the steam generator 1 waste products are regularly washed off. Subsequently, cold tap water is refilled via the inlet 5, whereby the operation of the steam generator 1 is partially interrupted for a short time. In the feed line 5 sits a switching valve 39, with which the inlet of the tap water is controlled.
  • the supply line 5 flows advantageously into a bottom 40 of a container 41 of the steam generator 1. In the container 41, steam is generated by heating the water, which is supplied to the condenser 2 via a steam line 8.
  • the steam line 8 is advantageously a hose that can be easily installed, even under unfavorable installation conditions.
  • the condenser 2 which is advantageously a plate heat exchanger, the steam is condensed.
  • the condensate 2 cooling water 9 is supplied, which absorbs the condensation enthalpy and dissipates.
  • the condensate is softened water, which is supplied via a line 10 to the collector 3.
  • He has a container 42, in the ceiling 43, the condensate line 10 opens advantageously.
  • To the bottom 44 of the container 42 includes a drain line 45, which can be closed and opened by a valve 46.
  • a line 19 is connected, in which a pump 11 is seated, with which the condensate located in the collector 3 via the line 19 to the second steam generator 4 is supplied.
  • a float switch 12 and an electrode 13 is arranged in the collecting container 42.
  • the float switch 12 is coupled to the switching valve 39. Reaches the condensate in the collector tank 42 a certain maximum level, via the float switch 12, an associated control and a control line 17, in which a regulator 16, the switching valve 39 is closed, so that the supply of water is interrupted in the container 41 of the steam generator 1 ,
  • the electrode 13 is connected via a control line 18, in which a controller 20 is seated, with the pump 11 control technology. Via the electrode 13 and the regulators 20 and 16, the valve 39 is controlled so that a constant level in the header tank 42 is maintained. It also ensures that the pump 11 does not run dry.
  • an overflow line 14 is connected, via the excess condensate is fed to a sequence 15.
  • the collector 3 forms a reservoir for the condensate, when the water in the container 41 of the steam generator 1 must be replaced by the blowdown. It is sucked off with the pump 7 via the drain line 6 from time to time and fed to the drain 15. During this cleaning process, the switching valve 39 is closed, so that no tap water is supplied. In addition, the steam generation is interrupted during the cleaning process, so that no condensate is formed. Therefore, the condensate located in the collector 3 is supplied to the steam generator 4 during the cleaning process.
  • the container 42 of the collector 3 has such a large capacity that a sufficient amount of condensate is available for the duration of the cleaning process. Thus, despite the discontinuous operation of the steam generator 1, a continuous operation of the steam generator 4 is ensured.
  • the condensate in the collector 3 is supplied by means of the pump 11 via the line 19 to the steam humidifier 4.
  • the conduit 19 is designed as a capillary tube, which has only a small inner diameter. It is, for example, only about 5 mm to 7 mm, advantageously about 6 mm.
  • the line 19 opens into an overflow pipe 32, which opens near the ceiling 47 of a container 21 of the steam humidifier 4.
  • a siphon 38 via a tee 37 is connected to the overflow pipe 32.
  • the line 19 opens in the flow direction of the condensate in front of the T-piece 37 in the overflow pipe 32nd
  • the condensate exiting via the overflow pipe 32 from the container 21 of the steam humidifier 4 is returned to the collecting container 3 via the siphon 38, the collecting line 29 and the further collecting line 51. It can be opened by a cock or a valve 35 when the container 21 is to be emptied.
  • the arrangement of the T-piece 37 determines via the connection to the open drain in the manifold 29 for the condensate level in the container 21.
  • the intermediate siphon 38 attenuates via its water mask occurring in the container 21 by the evaporation process water level fluctuations.
  • the condensate is fed via the discharge line 34 to the container 21, there is a very uniform supply of cold, softened water to the water in the boiling state in the container 21 and thus a consistently stable evaporator performance.
  • the capillary tube 19 ensures a stable pump pressure. Fluctuations in the water level in the container 21 and / or influences from the steam humidifier or evaporator 4 are thus almost completely eliminated.
  • the steam humidifier 4 is provided with at least one level monitor 23, with which the level of the condensate in the container 21 can be controlled.
  • the level monitor 23 is connected to a controller 24, which is connected as the controller 16, 20 to the controller. As soon as the condensate level in the container 21 falls below a predetermined value, the pumping capacity of the pump 11 is increased via the controller.
  • the controller 24 and the heater 22 and at least one humidity sensor 26 are connected, which is downstream of the steam lance 28 in the air flow direction.
  • the heating power so that the moisture content can be kept constant.
  • the controller 24 it is reliably possible to use the relative humidity of the air to be condensed as a controlled variable for the performance of the heater 22.
  • calcareous city water can be used to produce desalted, dirt-free water for the humidification of the process air.
  • the container 41 is regularly slurried.
  • the condensate formed in the condenser 2 is collected in the collector 3, which serves as a water buffer for the steam humidifier 4 when the steam generator 1 is cleaned.
  • the softened water is evaporated, preferably by a continuous control by means of the regulator 24. Due to the described level control in the container 21 of the steam humidifier 4 a constant humidifier performance is ensured because the condensate tapers constantly and evenly.
  • the level control is simple in construction and inexpensive.
  • the steam humidifier 1 can be operated at a lower power. This reduces energy consumption. If only a small amount of steam is needed to humidify the process air, the steam generator 1 can even be switched off temporarily, since the collector 3 contains sufficient supply of condensate.
  • the humidifier performance is controlled continuously via the control of the process air system.
  • the power control of the heater 22 in the steam humidifier 4 is advantageously carried out via a power controller with pulse width modulation.
  • the regulation of the steam generator 1 takes place in the manner described taking into account the level of the collector 3 in conjunction with the required humidifier.
  • the steam humidifier 1 is controlled so that it is switched off when falling below a predetermined power requirement, for example, at a power requirement less than 20%. If the required humidifying power rises above a predetermined value, for example above 25%, again, or if the level in the collector 3 drops below a set value, the steam humidifier is switched on again. In order to avoid a lack of water, the evaporator capacity of the steam humidifier 1 must be sufficiently greater than the evaporator capacity of the steam humidifier 4, for example by 20%.
  • the required power of the steam humidifier 1 is adapted to the power requirement.
  • the inlet cross section is kept very small.
  • the overflow pipe 32 allows via the siphon 38 and the manifold 29 a pressure equalization in the container 21. As a result, pressure surges when boiling the water have no effect on the water level in the container 21st
  • the condensate from the collector 3 is supplied so that it passes above the liquid level in the container 21 in the overflow pipe 32. This ensures that the container 21 is properly filled before the water enters the overflow pipe 32. In order to have a sufficient amount of water available for the evaporation process, more condensate, preferably twice as much, is supplied as condensate in the container 21 is evaporated.
  • the overflow pipe 32 and the siphon 38 are not completely filled with water, which would lead to a suction effect, the flow cross-sections of the overflow pipe 32, the T-piece 37 and the siphon 38 are sufficiently large.
  • the outlet to the siphon 38 has the same pressure level as the steam lance 28, since the manifold 29 to which the siphon 38 is connected, runs freely.
  • the distance from the steam outlet 25 of the container 21 to the water level is sufficiently large so that boiling water does not enter the steam line 27 and thereby increases the pressure, which would lead to humidity fluctuations, but especially to level fluctuations.
  • At the steam outlet 25 but also constructive measures can be provided to prevent the access of spray water in the steam line 27. Then the water level in the container 21 may be higher.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Air Humidification (AREA)
  • Magnetic Resonance Imaging Apparatus (AREA)
EP06002593A 2005-02-14 2006-02-09 Arrangement pour humidifier l'air conditionné Not-in-force EP1703220B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102005006520A DE102005006520A1 (de) 2005-02-14 2005-02-14 Einrichtung zum Befeuchten von Prozeßluft

Publications (2)

Publication Number Publication Date
EP1703220A1 true EP1703220A1 (fr) 2006-09-20
EP1703220B1 EP1703220B1 (fr) 2008-04-23

Family

ID=36405911

Family Applications (1)

Application Number Title Priority Date Filing Date
EP06002593A Not-in-force EP1703220B1 (fr) 2005-02-14 2006-02-09 Arrangement pour humidifier l'air conditionné

Country Status (3)

Country Link
EP (1) EP1703220B1 (fr)
AT (1) ATE393363T1 (fr)
DE (2) DE102005006520A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11262090B2 (en) 2018-01-19 2022-03-01 Dri-Steem Corporation Humidifier with automatic drain interval determination
CN114322347A (zh) * 2021-12-24 2022-04-12 珠海格力电器股份有限公司 压缩制冷机组、恒温恒湿空调机组及恒温恒湿控制方法
US11421899B2 (en) 2018-01-19 2022-08-23 Dri-Steem Corporation Condensing, ultra-low NOx gas-fired humidifier

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2021037973A1 (fr) 2019-08-29 2021-03-04 Lavair Ag Klimatechnik Dispositif d'humidification d'air

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2029428A (en) * 1932-08-17 1936-02-04 Refrigeration Res Corp Air conditioning method and apparatus
US2321115A (en) * 1940-02-06 1943-06-08 Servel Inc Air conditioning
US3219796A (en) * 1962-01-04 1965-11-23 Badertscher Apparatus for moistening air
DE29911440U1 (de) * 1999-07-01 1999-11-11 Ku Chin Kuang Industrieller Dampfgenerator

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2029428A (en) * 1932-08-17 1936-02-04 Refrigeration Res Corp Air conditioning method and apparatus
US2321115A (en) * 1940-02-06 1943-06-08 Servel Inc Air conditioning
US3219796A (en) * 1962-01-04 1965-11-23 Badertscher Apparatus for moistening air
DE29911440U1 (de) * 1999-07-01 1999-11-11 Ku Chin Kuang Industrieller Dampfgenerator

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11262090B2 (en) 2018-01-19 2022-03-01 Dri-Steem Corporation Humidifier with automatic drain interval determination
US11421899B2 (en) 2018-01-19 2022-08-23 Dri-Steem Corporation Condensing, ultra-low NOx gas-fired humidifier
US11940178B2 (en) 2018-01-19 2024-03-26 Dri-Steem Corporation Condensing, ultra-low NOx gas-fired humidifier
CN114322347A (zh) * 2021-12-24 2022-04-12 珠海格力电器股份有限公司 压缩制冷机组、恒温恒湿空调机组及恒温恒湿控制方法

Also Published As

Publication number Publication date
EP1703220B1 (fr) 2008-04-23
DE102005006520A1 (de) 2006-08-24
ATE393363T1 (de) 2008-05-15
DE502006000671D1 (de) 2008-06-05

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