WO2000068618A1 - Generateur de vapeur - Google Patents
Generateur de vapeur Download PDFInfo
- Publication number
- WO2000068618A1 WO2000068618A1 PCT/BE2000/000051 BE0000051W WO0068618A1 WO 2000068618 A1 WO2000068618 A1 WO 2000068618A1 BE 0000051 W BE0000051 W BE 0000051W WO 0068618 A1 WO0068618 A1 WO 0068618A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- water
- droplets
- generator according
- column
- tank
- 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.)
- Ceased
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
- F24F6/12—Air-humidification, e.g. cooling by humidification by forming water dispersions in the air
-
- 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]
- Y02B30/70—Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating
Definitions
- the present invention relates to a steam generator or humidifier, more particularly to ultrasound.
- ultrasonic steam generator for producing non-condensing steam in the form of micro-droplets.
- These devices consist of one or more ultrasonic cells (transducers vibrating at a frequency of +/- 1.7 MHz) placed at the bottom of a water tank. These cells produce a sort of fountain or mini-geyser from which the micro-droplets escape. The latter are carried away by a vertical air current produced by a fan in a chimney-shaped element.
- a more efficient device is proposed, which can be more compact and has a better yield.
- This object is achieved by making the flow of air adopt a path horizontally crossing the column, more particularly the base of the column, of micro-droplets produced by the ultrasonic cell.
- This arrangement makes it possible to separate the droplets of larger diameter endowed with a greater kinetic energy and which can rise to a few centimeters, even a few tens of centimeters above the surface of the liquid.
- the invention therefore provides a steam generator comprising a water tank and ultrasonic cells at the bottom of said tank, the cells being able, in contact with water, to form a column of drops and droplets above the surface of said water, characterized in that a stream of air selectively crosses the base of said column horizontally, thus carrying the finest droplets towards an outlet opening.
- the column is located in a chamber closed upwards, for example by a cover element covering the device.
- the transducers are located at the base of a bell-shaped arrangement, that is to say without vertical outlet.
- the air set in motion is brought to the base of said bell because, according to this arrangement, it can only descend along a separating wall descending from the upper face of the enclosure, for example formed by a cover element , wall forming an upwardly closed chamber, or bell, in which the fountains ("geysers") of the transducers produce the drops and droplets.
- a separating wall descending from the upper face of the enclosure for example formed by a cover element , wall forming an upwardly closed chamber, or bell, in which the fountains (“geysers”) of the transducers produce the drops and droplets.
- the separating wall may be integral with the cover and optionally formed in one piece with the latter, for example by molding. It can also be secured to the tank.
- the air can only exit by following a horizontal path under the bell and by entraining the finest micro-droplets which do not have the kinetic energy necessary to go up in the bell.
- the larger droplets remain trapped in the bell and fall back into the tank.
- the air stream containing exclusively very fine droplets exits through an opening either at the top of the device, possibly screened, placed behind the bell, or through a side opening.
- the "mist" which leaves the apparatus is not wetting and 1 total evaporation is thus obtained with droplets remaining in suspension.
- the embodiment with lateral or front outlet is particularly advantageous from the point of view of space.
- the air is captured by a fan and firstly circulates under the water tank, cooling the electronic elements of the ultrasonic transducers. These electronic elements therefore do not heat the water as in certain embodiments of the prior art.
- the fan air inlet can be located under the device, above the device or on one of the side walls. These last two embodiments are preferred if the outlet is lateral.
- a horizontal wall or plate having a perforation of small diameter is placed above each cell.
- These perforations are arranged so as to allow the jet of fountains to pass through said plate, the upper part of each fountain therefore being enclosed in an enclosure pe in the shape of a bell, situated above the surface of the water and so above the cells.
- the perforations will preferably be circular or elliptical.
- the air flow passes between the water surface and the plate, flush with the water with a minimum of turbulence and efficiently collects the smaller droplets which are preferably there. It can be postulated that these droplets are ejected at a very low speed and are of the order of 1 to 3 microns.
- An air current is thus provided which crosses the base of said column horizontally and selectively, thus carrying the finest droplets towards an outlet opening.
- the upper part of the fountain contains the least fine droplets and is advantageously isolated from the lower part by a plate provided with a perforation allowing the main jet of the fountain to pass.
- the plate is preferably placed essentially horizontally a short distance above the water. It forms for example an enclosure open on the sides or provided with lateral openings allowing the water which gushes or condenses in the enclosure to fall back into the tank without accumulating there. These return paths interfere as little as possible with the air flow and the fountain (s).
- the plate can be tilted slightly to collect water from one side or the other, towards a lower lateral opening communicating with the main tank.
- the perforations allowing the upper part of the fountains to pass can have raised edges to prevent any return by these perforations of the water formed in the enclosure and flowing on the upper face of the perforated plate.
- the perforations preferably have a diameter between 8 and 15 mm and the plate is advantageously at a height between 15 and 40 mm, preferably around 30 mm for a length which will be for example 60 mm.
- This embodiment is particularly suitable for the production of compact devices, in particular of low height, which can be inserted in air-conditioned enclosures, refrigerated cabinets, ovens, air conditioning and / or heating ducts or in fan coil units.
- - fig. 1 represents a device according to the prior art
- FIG. 4 illustrates another embodiment with lateral steam outlet
- FIG. 5 illustrates a variant of FIG. 4 where the air inlet of the fan is located on a side face.
- - figs. 6a to 6d illustrate an example of arrangement of the various elements constituting a device according to the invention
- - fig. 7 shows an improved device comprising a perforated horizontal plate.
- FIG. 1 illustrates a schematic diagram of an example of a conventional humidifier with a water tank 1 maintained at a constant level, eg at +/- 45 mm in height above the surface of one or more transducers 2 which vibrate each producing a fountain 5 from which escape both fine desirable droplets and larger unwanted drops.
- the tank is pressurized by a fan 3 and the air can only exit through the chimney 4 causing the passage of very fine droplets in suspension but also a non-negligible part of the largest drops.
- Fig. 2 illustrates in section a device according to the invention consisting of several removable parts, slightly disassembled, ie a grid 20, a cover element 21 with an upper opening 22 on which the grid 20 fits and a lower opening 23, a reservoir 24, a separator or deflector plate 25 secured either to the cover or to the reservoir.
- the bottom of the tank is provided with one or more transducers 26, and an external enclosure 27 supporting the tank, the cover and the grid, and comprising the fan 28 and the electronic elements 29.
- the transducers or cells 26 associated with generator 29 can operate at 1700 KHz.
- the cell disc can have a diameter of 17 mm.
- a NB-595-095 Ultrasonic Humidifier cell from TDK may be suitable.
- Fig. 3 illustrates the path of the air in the device according to the invention of FIG. 2, the reservoir 24 being partially filled with water 30.
- the air enters through an opening 31 in the bottom of the enclosure, passes under part of the reservoir and of the electronic elements, rises along an external face of a side wall of the reservoir to descend between the corresponding external face and an internal wall 25.
- the deflector or separator 25 imposes on the air flow a subsequent essentially horizontal trajectory above the surface of the water in the area where the transducer (s) 26 cause the formation of one or more columns 32 of micro-droplets.
- the laminar flow scans only the base of the geysers, which, moreover, in known manner, are slightly inclined, inclination caused by the inclination of the transducers.
- Fig. 4 is a perspective view of another embodiment of the invention.
- the device is shown cut along a plane perpendicular to the walls 47 of the external enclosure. We distinguish the walls 41 of the bowl 44 as well as the water level 43.
- the air flow represented by a large arrow F carries the micro-droplets towards a wide slot outlet 45.
- the cylindrical elements 48 are closed towards the top and surround the geysers, and are located above the transducers 42.
- the fan 49 is placed on the upper face of the external enclosure.
- Fig. 5 shows an identical variant of the device according to Figure 4. The fan is placed on a side face which allows its positioning in even smaller spaces.
- the laminar air flow enters by the vacuum cleaner in the enclosure passes above the rim of the water tank, shaves off the water and the base of the geysers by taking away the micro-droplets, returns to the opposite rim of the tank water and leaves the enclosure through a slit.
- FIGS. 6a to 6d illustrate a configuration of the elements of a device according to the invention with three cells in which the fan 49 is located on a side wall of the enclosure 47.
- FIG. 6a is a rear perspective view
- FIG. 6b a top view
- FIG. 6c a side view
- FIG. 6d a rear view.
- the filling solenoid valve 60 the cells (transducers) 42
- the level control 64 the level control 64
- the lateral outlet opening 45 lightly oblique with respect to the vertical
- Fig. 6c is a side view showing inter alia the water tank 44 and the generator 29.
- FIG. 6d a further distinction is made between the water inlet 61, the 48VAC socket with fuse and a switch 63.
- Fig. 7 schematically represents a device comprising a horizontal plate 70 comprising two openings at 71.
- This plate thus forms an enclosure 72 (shown separately in perspective) open laterally and disposed above the surface of the water so that it contains the upper part of the two fountains 32.
- the water formed inside The enclosure can return to the main tank 73 via the two open sides (arrow A), without disturbing the fountains 32 and the air flow 74.
- Fig. 8 corresponds to the device of FIG. 3 in which the principle illustrated in FIG. 7.
- the deflector 25 becomes one of the walls of the enclosure 72 and forms the latter with the plate 70, an angle iron 76 and the cover element 21.
- Test A is carried out with a standard device without a perforated horizontal plate.
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Dispersion Chemistry (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Special Spraying Apparatus (AREA)
- Air Humidification (AREA)
Abstract
Description
Claims
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA002373136A CA2373136A1 (fr) | 1999-05-06 | 2000-05-06 | Generateur de vapeur |
| AU45290/00A AU4529000A (en) | 1999-05-06 | 2000-05-06 | Steam generator |
| EP00926587A EP1177402A1 (fr) | 1999-05-06 | 2000-05-06 | Generateur de vapeur |
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| BE9900324 | 1999-05-06 | ||
| BE9900324 | 1999-05-06 | ||
| BE9900682 | 1999-10-14 | ||
| BE9900682 | 1999-10-14 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2000068618A1 true WO2000068618A1 (fr) | 2000-11-16 |
Family
ID=25663168
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/BE2000/000051 Ceased WO2000068618A1 (fr) | 1999-05-06 | 2000-05-06 | Generateur de vapeur |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP1177402A1 (fr) |
| AU (1) | AU4529000A (fr) |
| CA (1) | CA2373136A1 (fr) |
| WO (1) | WO2000068618A1 (fr) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6726186B2 (en) | 2000-08-16 | 2004-04-27 | Sonia Gaaloul | Apparatus for cleaning and refreshing fabrics with an improved ultrasonic nebulizer |
| RU2287745C1 (ru) * | 2004-06-14 | 2006-11-20 | КЬЮКУ ЭЛЕКТРОНИКС Ко. Лтд. | Распылительное устройство для увлажнителя воздуха |
| CN102597637A (zh) * | 2009-07-28 | 2012-07-18 | Kaz欧洲有限公司 | 冷暖雾组合加湿器 |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS56133545A (en) * | 1980-03-24 | 1981-10-19 | Hakko Katsuji Chiyuuzouki Seisakusho:Kk | Humidifier |
| JPS60117039A (ja) * | 1983-11-30 | 1985-06-24 | Toshiba Corp | 超音波加湿器 |
| JPS63263336A (ja) * | 1987-04-22 | 1988-10-31 | Matsushita Seiko Co Ltd | 超音波加湿機 |
| US5693266A (en) * | 1995-08-30 | 1997-12-02 | Daewoo Electronics Co., Inc. | Heating-type ultrasonic humidifier |
-
2000
- 2000-05-06 CA CA002373136A patent/CA2373136A1/fr not_active Abandoned
- 2000-05-06 EP EP00926587A patent/EP1177402A1/fr not_active Withdrawn
- 2000-05-06 WO PCT/BE2000/000051 patent/WO2000068618A1/fr not_active Ceased
- 2000-05-06 AU AU45290/00A patent/AU4529000A/en not_active Abandoned
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS56133545A (en) * | 1980-03-24 | 1981-10-19 | Hakko Katsuji Chiyuuzouki Seisakusho:Kk | Humidifier |
| JPS60117039A (ja) * | 1983-11-30 | 1985-06-24 | Toshiba Corp | 超音波加湿器 |
| JPS63263336A (ja) * | 1987-04-22 | 1988-10-31 | Matsushita Seiko Co Ltd | 超音波加湿機 |
| US5693266A (en) * | 1995-08-30 | 1997-12-02 | Daewoo Electronics Co., Inc. | Heating-type ultrasonic humidifier |
Non-Patent Citations (3)
| Title |
|---|
| PATENT ABSTRACTS OF JAPAN vol. 006, no. 014 (M - 108) 27 January 1982 (1982-01-27) * |
| PATENT ABSTRACTS OF JAPAN vol. 009, no. 272 (M - 425) 30 October 1985 (1985-10-30) * |
| PATENT ABSTRACTS OF JAPAN vol. 013, no. 060 (M - 796) 10 February 1989 (1989-02-10) * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6726186B2 (en) | 2000-08-16 | 2004-04-27 | Sonia Gaaloul | Apparatus for cleaning and refreshing fabrics with an improved ultrasonic nebulizer |
| RU2287745C1 (ru) * | 2004-06-14 | 2006-11-20 | КЬЮКУ ЭЛЕКТРОНИКС Ко. Лтд. | Распылительное устройство для увлажнителя воздуха |
| CN102597637A (zh) * | 2009-07-28 | 2012-07-18 | Kaz欧洲有限公司 | 冷暖雾组合加湿器 |
| CN102597637B (zh) * | 2009-07-28 | 2014-12-24 | Kaz欧洲有限公司 | 冷暖雾组合加湿器 |
Also Published As
| Publication number | Publication date |
|---|---|
| AU4529000A (en) | 2000-11-21 |
| EP1177402A1 (fr) | 2002-02-06 |
| CA2373136A1 (fr) | 2000-11-16 |
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