EP2167871A2 - Humidificateur à électrode - Google Patents

Humidificateur à électrode

Info

Publication number
EP2167871A2
EP2167871A2 EP08799576A EP08799576A EP2167871A2 EP 2167871 A2 EP2167871 A2 EP 2167871A2 EP 08799576 A EP08799576 A EP 08799576A EP 08799576 A EP08799576 A EP 08799576A EP 2167871 A2 EP2167871 A2 EP 2167871A2
Authority
EP
European Patent Office
Prior art keywords
electrodes
humidifier
tank
electrode
electrode humidifier
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Withdrawn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
EP08799576A
Other languages
German (de)
English (en)
Inventor
Stanley Clemens Deutschmann
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
Publication of EP2167871A2 publication Critical patent/EP2167871A2/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Withdrawn legal-status Critical Current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
    • 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F22—STEAM GENERATION
    • F22B—METHODS OF STEAM GENERATION; STEAM BOILERS
    • F22B1/00—Methods of steam generation characterised by form of heating method
    • F22B1/28—Methods of steam generation characterised by form of heating method in boilers heated electrically
    • F22B1/284—Methods of steam generation characterised by form of heating method in boilers heated electrically with water in reservoirs
    • F22B1/285—Methods of steam generation characterised by form of heating method in boilers heated electrically with water in reservoirs the water being fed by a pump to the reservoirs
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F22—STEAM GENERATION
    • F22B—METHODS OF STEAM GENERATION; STEAM BOILERS
    • F22B1/00—Methods of steam generation characterised by form of heating method
    • F22B1/28—Methods of steam generation characterised by form of heating method in boilers heated electrically
    • F22B1/30—Electrode boilers
    • F22B1/303—Electrode boilers with means for injecting or spraying water against electrodes or with means for water circulation
    • F22B1/306—Electrode boilers with means for injecting or spraying water against electrodes or with means for water circulation with at least one electrode permanently above the water surface
    • 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
    • F24F6/02—Air-humidification, e.g. cooling by humidification by evaporation of water in the air
    • F24F6/025—Air-humidification, e.g. cooling by humidification by evaporation of water in the air using electrical heating means

Definitions

  • This invention lies in the field of electrode humidifiers or “electrode boilers”, at the heart of which is the “boiler”, “bottle” or “steam tank”, the purpose of which is to supply steam to a space and which find many applications. For example, application to computer rooms (to control static electricity build up), operating theatres, offices, shops, product processing plant, holding containers, storage facilities, and other environments and for humans where health considerations apply.
  • the invention also applies to any other equipment where scale is deposited on a process surface, for example industrial electrode boilers.
  • Electrode humidifiers may be both single phase and three phase with electrodes immersed in water and generally operate by controlling the level of water into which electrodes are partially or fully immersed in order to control the rate of steam production.
  • a problem inherent in humidifiers is scale build up and other deposits of solids due to the boiling away as steam and a purging cycle is commonly resorted to. Periodic shut down and scraping and cleaning off of scale is generally required despite purging.
  • Attempts at solving these problems have included chemical treatment, e.g. to convert sodium chloride ions to sodium sulphate, magnetic treatments of the water and electronic pulsing at selected frequencies.
  • chemical treatment e.g. to convert sodium chloride ions to sodium sulphate
  • magnetic treatments of the water and electronic pulsing at selected frequencies have not fully solved the problems mentioned above with resulting cost and inefficiency consequences.
  • the present invention provides an electrode humidifier characterized in that the electrodes are engaged by wiper means and a relative motion between the electrodes and the wiper means is continuously or continually applied during operation of the humidifier. The continuous action continues without interruption and the continual action is very frequent without cessation. With the electrodes stationary and the wiper means moved, this simplifies the electrical connections to the electrodes which are located in the steam tank in which water is contained for production of steam.
  • the wiper means may further operate on other scale collecting surfaces.
  • the wiper means which may be in the form of blades, are preferably moved in a rotational movement, as this allows them to be mounted on a shaft which can easily be driven rotationally.
  • the electrodes are preferably in a form of a circular disc so that the wiper blades move rotationally over the whole electrode surface with a suitable rotational speed.
  • the electrodes that are moved they would again preferably be in a form of circular discs with the stationary wiper blades acting against them.
  • the wiper blades are fixed on an insulating mounting between the electrodes.
  • a preferred general construction of a humidifier according to this preferred embodiment of the invention is a rectangular tank with electrodes depending from the roof of the tank, a horizontal shaft extending across the tank and carrying wiper blades arranged to wipe the operative surfaces of the electrodes, the shaft passing through the tank wall at one end to be driven by a suitable means, for example a suitably geared electric motor.
  • a side water inlet, upper steam outlet and a bottom drain are provided.
  • Two, three or four electrodes are provided for single phase electrical supply and four electrodes for three phase supply.
  • a humidifier made with provision of four electrodes can conveniently be powered as a single phase device or a three phase device by arranging the electrical connections to the electrodes accordingly. It is found convenient to make at least part of the tank with transparent walls and/or roof to allow observing the operation and the conditions in the humidifier, as an optional feature.
  • the relative motion between the electrodes and the wiper means may in accordance with an alternative embodiment of the invention be continuously applied during operation of the humidifier by a linear actuator means.
  • the linear actuator means must preferably provide an axial movement that oscillates back and forth.
  • the embodiment of the invention that uses reciprocating linear movement allows application to a steamer bottle which has a generally hollow upright cylindrical shape with linear electrodes depending from the top of the bottle.
  • the water level may be controlled to rise no higher than just below the shaft in order to avoid scale and other deposits building up on the shaft, however, although this was adopted in a prototype it will not be followed in further models.
  • An inlet, outlet and a bottom water drain are provided. Means to prevent back siphoning are preferably added and are mandatory in some jurisdictions. Three electrodes are provided for three phase electrical supply.
  • the electrodes are in a form of discs describing an arc of a circle and the wiper blades reciprocate angularly over the electrodes, in a motion much like a motor car windscreen wiper.
  • FIG. 1 is an isometric view of the humidifier in simplified illustration
  • Figure 2 is an end view of the humidifier steam generating tank
  • Figure 3 is a cross-sectional view of the tank
  • Figure 4 is a plan view of the top lid of the tank
  • Figure 5 is a cross sectional view of the lid
  • Figure 6 is a plan view on the lid
  • Figure 7 is a series of views in orthogonal projection of the bracket
  • Figure 8 is a series of views showing the motor shaft and clip
  • Figure 9 is a series of views of the shaft bearing bracket
  • Figure 10 is an isometric "exploded" view of a humidifier bottle
  • Figure 11 is a plan view of the humidifier bottle electrodes and wipers.
  • the electrode humidifier 1 has four electrodes 2, 3, 4 and 5, which are engaged by wiper blades 6, 7 and 8, which are continuously rotated during steam production.
  • the wiper blades are mounted for this purpose on a shaft 9 which is turned by a motor 10.
  • the tank has an outlet 11 for steam, an inlet 12 for water and a drain 13.
  • the electrodes are connected to a three phase supply at connection points 14, 15, 16 and 17, points 14 and 17 connected to phase #1, point 15 to phase #2 and point 16 to phase #3.
  • the steam tank contains the water for production of steam and the water level 18 controlled, for example kept above the water inlet and below the shaft.
  • a triac can be used to vary the voltage applied to the electrodes, the water level may be kept constant and may be a lot higher than shown in this example.
  • the wiper blades are made of selected material, for example silicon rubber, which endures the temperature in the tank and wipe the deposits continuously off the electrodes, which may be made of stainless steel, for example.
  • the humidifier has a rectangular tank having a base 19, sides 20, 21, 22 and 23 and a roof or lid 24, with the electrodes depending from the roof of the tank.
  • the horizontal shaft extends across the tank carrying the wiper blades, the shaft passing through a sealed hole 25 that incorporates seals in the tank wall at one end to be driven by the suitably geared electric motor, the other end of the shaft may be journalled in a bracket inside the tank (not shown).
  • the boiler tank can be made of transparent material, for example at least the roof of the tank is made with transparent material, e.g. polycarbonate to allow observing the operation and conditions in the humidifier.
  • FIGs 2 to 9 show various components of a particular design for implementing the invention, as a guide the same reference numerals are used as were used in figure 1 to indicate the corresponding parts.
  • slot and holes 26, 27, 28 and 29 are indicated for the electrodes and connection points 2, 3, 4 and 5 and 14, 15, 16 and 17 respectively.
  • the electrode humidifier bottle 30 has three electrodes 31, 32 and 33, which are engaged by wipers 34, 35 and 36, which are continuously reciprocated linearly during steam production.
  • the wipers are mounted for this purpose on a shaft 37 which is reciprocated by a linear actuator (not shown).
  • the tank has an outlet for steam, an inlet for water and a drain and other connections.
  • the electrodes are connected to a three phase supply. Having the electrodes stationary and the wiper means oscillated simplifies the electrical connections to the electrodes, the steam tank contains the water for production of steam.
  • the wiper blades are made of selected material, for example silicon rubber or a rather more abrasive material, which endures the temperature in the tank and wipes the deposits continuously off the electrodes, which may be made of stainless steel, for example.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Sustainable Development (AREA)
  • Combustion & Propulsion (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Sustainable Energy (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Air Humidification (AREA)
  • Cleaning By Liquid Or Steam (AREA)
  • Transmission Devices (AREA)

Abstract

L'invention concerne un humidificateur à électrode qui présente la caractéristique clé que ces électrodes sont essuyées en continu pendant le fonctionnement de l'humidificateur générant de la vapeur par des balais d'essuie-glace. Les balais d'essuie-glace peuvent tourner en continu, montés sur un arbre, essuyant les électrodes sous la forme de disques circulaires de manière à essuyer les surfaces entières des électrodes ou les balais peuvent effectuer un mouvement de va-et-vient de manière angulaire en essuyant les électrodes. Un actionneur linéaire pour un mouvement de va-et-vient linéaire peut être utilisé pour un type de bouteille de chaudière d'humidificateur.
EP08799576A 2007-06-18 2008-06-05 Humidificateur à électrode Withdrawn EP2167871A2 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
ZA200704597 2007-06-18
ZA200707632 2007-09-05
PCT/ZA2008/000045 WO2008157848A2 (fr) 2007-06-18 2008-06-05 Humidificateur à électrode

Publications (1)

Publication Number Publication Date
EP2167871A2 true EP2167871A2 (fr) 2010-03-31

Family

ID=40156984

Family Applications (1)

Application Number Title Priority Date Filing Date
EP08799576A Withdrawn EP2167871A2 (fr) 2007-06-18 2008-06-05 Humidificateur à électrode

Country Status (4)

Country Link
US (1) US20100247083A1 (fr)
EP (1) EP2167871A2 (fr)
CN (1) CN101715528B (fr)
WO (1) WO2008157848A2 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5885653B2 (ja) * 2012-12-28 2016-03-15 三菱電機株式会社 加湿装置
US11085656B2 (en) * 2017-02-24 2021-08-10 Ademco Inc. Configurable electrode humidifier allowing for various injects

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB493759A (en) * 1937-02-09 1938-10-10 Stanley Austen Williams Improvements in electrode boilers, water heaters and the like
US3114028A (en) * 1957-02-13 1963-12-10 William Vischer Electrode type vapor generator
US4869853A (en) * 1989-01-05 1989-09-26 Chen C H Warm mist humidifier with automatic cleaning device
IT224189Z2 (it) * 1991-04-10 1996-02-09 C Ar El Costruzione Armadi Ele Apparecchiatura per la produzione di vapore per l'umidificazione dell'aria
FR2676464A1 (fr) * 1991-05-16 1992-11-20 Innovations Thermiques Dispositif de chauffage equipe d'un moyen anti-depot notamment de tartre.
CN2306395Y (zh) * 1997-06-11 1999-02-03 钲德电热股份有限公司 电极式蒸气产生装置
IT1310957B1 (it) * 1999-06-07 2002-02-27 Gen Technology S R L Attrezzo a vapore ad uso domestico dotato di dispositivo didisincrostazione ad azionamento manuale o automatico.

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2008157848A3 *

Also Published As

Publication number Publication date
US20100247083A1 (en) 2010-09-30
CN101715528A (zh) 2010-05-26
WO2008157848A3 (fr) 2009-06-25
CN101715528B (zh) 2011-12-28
WO2008157848A2 (fr) 2008-12-24

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