EP1123479B1 - Tete de pulverisation polyvalente pour la fabrication de neige artificielle - Google Patents
Tete de pulverisation polyvalente pour la fabrication de neige artificielle Download PDFInfo
- Publication number
- EP1123479B1 EP1123479B1 EP99950816A EP99950816A EP1123479B1 EP 1123479 B1 EP1123479 B1 EP 1123479B1 EP 99950816 A EP99950816 A EP 99950816A EP 99950816 A EP99950816 A EP 99950816A EP 1123479 B1 EP1123479 B1 EP 1123479B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- spray head
- chamber
- passage
- nozzles
- cap
- 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.)
- Expired - Lifetime
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25C—PRODUCING, WORKING OR HANDLING ICE
- F25C3/00—Processes or apparatus specially adapted for producing ice or snow for winter sports or similar recreational purposes, e.g. for sporting installations; Producing artificial snow
- F25C3/04—Processes or apparatus specially adapted for producing ice or snow for winter sports or similar recreational purposes, e.g. for sporting installations; Producing artificial snow for sledging or ski trails; Producing artificial snow
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25C—PRODUCING, WORKING OR HANDLING ICE
- F25C2303/00—Special arrangements or features for producing ice or snow for winter sports or similar recreational purposes, e.g. for sporting installations; Special arrangements or features for producing artificial snow
- F25C2303/048—Snow making by using means for spraying water
- F25C2303/0481—Snow making by using means for spraying water with the use of compressed air
Definitions
- the present invention relates to a spray head for making artificial snow.
- This spray head is more particularly intended for a installation of the kind described in document FR-2 743 872 or in document WO 9 718 421.
- the present invention provides a versatile spray head which includes means enabling it to manufacture quantities of snow artificial, adapted to variations in climatic conditions.
- the spray head according to the invention comprises at least two nozzles or nozzles supplied separately by pressurized water circuits, these nozzles are arranged on a tubular jacket whose axis is close to vertical under normal operating conditions, which jacket contains a core which is provided with radial partitions for sealingly divide the internal space of said shirt into several bedrooms, one master bedroom and at least one secondary bedroom which is implemented after the master bedroom if necessary, which chambers are used to supply one or more nozzles or nozzles which core is provided internal channels connected to said pressurized water circuits so to power each room.
- the invention differs from the device cited in document WO 97 18421 in that the nozzles or nozzles are arranged on a tubular jacket (64, 64 ') whose axis is close to vertical in operating conditions, which shirt containing a core (65, 65 ') which is provided with radial partitions (67, 69, 71 and 73) for sealingly dividing the internal space of said shirt into several bedrooms (66, 70 and 72), one master bedroom (66) and at least one bedroom secondary (70, 72) which is implemented after the main chamber if necessary.
- Which chambers are used to supply one or more nozzles or sprinklers (75), which core is provided with internal channels (99, 101, 102) connected on said circuit pressurized water so as to supply said chambers.
- the upper part of the spray head comprises a cap provided with at least one spray device making nucleator office and placed next to or in the field of the nozzle (s) the main chamber, which cartridge-shaped device is supplied with water and pressurized air, which is supplied, for water, by the supply channel of said main chamber, which channel passes through said cap, and the air supply takes place by means of a specific channel arranged in the core and in the cap, in the center of these.
- the inlet opening (s) pressurized water from the nucleation device are located in an area of the spray head cap, which is arranged to allow permanent circulation of pressurized water around said orifices to, in addition to supplying said orifices, avoid freezing phenomena at level of these.
- the different channels supply chambers of said head open at the bottom of each room thus allowing a total emptying of the latter during stopping the installation.
- said channel comprises in its return branch going from said hat to said main chamber, a drain channel which extends between the lower end of said chamber and the inlet channel arranged in the core.
- the nucleation device is integrated radially into the spray head, passing through the tubular jacket and it fits into the central core of said head to the pressurized air inlet channel, which device is supplied in water directly from the main chamber of said head, in which locate its pressurized water inlet port (s).
- the nucleation device comprises a cartridge constituting the mixing chamber and two spray nozzles for mixing air-water, each nozzle being oriented parallel to the faces of the dihedrons in which, for example, are aligned with the water spray nozzles under pressure.
- the body of the nucleation device soaks in the water circulating in the master bedroom, preventing freezing and blockage of the small opening (s) due to the permanent circulation of water in said room.
- the spray head comprises a foot which is arranged to allow attachment to a pole, which pole comprises for example several water supply conduits and possibly in pressurized air, which conduits are arranged in relationship with orifices arranged in said foot to supply the different nozzles of said head.
- the spray head shown in Figure 1 is more particularly intended to be installed at the end of a pole as in the case of the installation described in the aforementioned patent FR-2,743,872 of the applicant.
- a part 63 can serve as an intermediary, as shown in FIG. 1.
- This piece 63 is slightly bent to give the head 1 an inclination favorable, close to vertical, or slightly tilted to cause spraying of water at an angle which favors a projection on the most long distance possible depending on needs and site.
- the spray head consists of a tubular jacket 64 and a cylindrical core 65 centered in said jacket, the diameter of which is lower than that of said jacket to allow the passage of water under pressure.
- the core 65 has circular radial partitions which divide the internal space between the jacket 64 and said core, in several chambers.
- Partition 73 is located at the lower part of the core 65 and the partition 67 at the upper part.
- Each chamber supplies one or more sprinklers 75 located on a or several generatrices of the cylindrical envelope of the jacket 64.
- Room 66 which is the main room, can have several nozzles 75 distributed over several generators.
- the sprinklers 75 in rooms 70 and 72 are sprinklers which are implemented independently of those of the room 66, depending on climatic conditions to increase according to these climatic conditions the quantities of snow produced.
- Each room is fed by a channel which leads to its part lower.
- Figure 1 the orifice 76 which opens into the chamber 66 to its lower part, that is to say at the level of the partition 69 of the core 65.
- a orifice 77 opens at the bottom of the chamber 70 at the level of the partition 71, and an orifice 79 opens into chamber 72 at the level of the partition 73.
- the seal between the jacket 64 and the various partitions 67, 69, 71 and 73, is produced by means of O-ring seals 80 arranged in the thickness of said partitions.
- the lower part of the core 65 has a base 81 in the form radial shoulder, on which the lower end 82 of the jacket 64.
- the core 65 extends above the upper end 83 of the shirt 64 and it is covered by a cap 84 which is fixed by screws 85 taken in the upper cylindrical end 86 of the core 65.
- the joint plane 87 between the shirt 64 and the cap 84 is disposed between the O-ring 80 of the partition 67 and an O-ring 89 arranged in a groove arranged in the upper cylindrical end 86 of the core 65.
- the cap 84 is positioned relative to the core 65 in a way specifies either by means of an original distribution of the screws 85 and / or a pin centering 90.
- This position of the cap 84 makes it possible to place the shirt 64 in a precise position also by means of the centering pin 90 interposed between both at the joint plane 87.
- the cap 84 includes at least one nucleation device 91 which makes acts as nucleator, to make particles of ice or snow which will then seed the different jets coming from the nozzles 75 of the spray head.
- This nucleation device 91 comprises a body cylindrical in the shape of a cartridge 92 inserted radially into an orifice fitted for this purpose in the cap 84, and a nozzle or nozzle 93 which is preferably oriented towards the jets of the different nozzles or nozzles 75 so to carry out the seeding.
- the cartridge 92 of the nucleation device is fixed by any means suitable in cap 84, for example by screwing; it will be detailed further.
- the nucleation device 91 which in fact constitutes a sort of mini high pressure snow cannon with very high air / water ratio, at least equal to 200, is supplied with pressurized water by one of the channels supply of the rooms and in particular by means of the channel which feeds master bedroom 66.
- This mini cannon is also supplied with pressurized air.
- a channel 95 disposed in the center of the core 65, which extends into the cap 84, in the form of a blind hole central. This channel 95 allows the pressurized air to be brought up to the level of the nucleation device 91 and in particular at the downstream inlet of the mixing of said device, detailed below.
- Chamber 66 is arranged just below the nucleation device 91; it is supplied with pressurized water by means of a channel 96 which also extends into the cap 84, which cap has a annular cavity 97 which is crossed by the cartridge 92 of the nucleation 91.
- the channel 96 extends over the entire length of the nucleus 65; he communicates with the annular cavity 97 fitted in the cap 84 and a second channel 99 arranged in the core 65 extends from said cavity 97 of the cap 84, to the lower part of chamber 66, opening at level of the orifice 76 in said chamber to supply the latter.
- the chamber 66 supplies several jets 75, arranged in pairs on two different generators. These sprinklers 75 are aligned vertically with the nozzles arranged at the level of the others chambers 70 and 72 and also with the nucleation devices 91.
- port 76 is located at the bottom of chamber 66.
- a small channel 100 of small diameter which extends between channel 99 and channel 96, arranged in such a way that it allows total drainage of the water located in the chamber 66, when the water supply is cut off.
- the diameter of this channel 100 is of the order of 1 / 5th of the diameter of the channels 96 and 99 in order to maintain a preferential circulation of water under pressure, in the cavity 97 of the cap 84.
- Figure 5 shows a section at the orifice 77 which allows the supply of the chamber 70 and of the nozzles 75.
- This orifice 77 is supplied by means of a channel 101 which extends axially in the core 65.
- Figure 6 corresponds to a section at the orifice 79 which serves to supply the chamber 72 and the lower nozzles 75.
- This chamber 72 is supplied by means of a channel 102 which extends parallel to the channel 101, at the channel 96 and to the central channel 95 which is used for the passage of compressed air.
- channel 102 is located under channel 99, centered practically on the same axis.
- the lower end of channel 99 and the end channel 102 are separated by a distance which corresponds substantially at the height of the chamber 70.
- Figure 2 shows the detail of one of the water introduction holes under pressure in the cartridge 92 of the nucleation device 91.
- This cartridge 92 of tubular shape, has in its central part an axial chamber 103 which opens downstream from the side of the nozzle 93 and which is open upstream on channel 95 in cap 84.
- the diameter of the axial mixing chamber 103 is substantially greater than the diameter of the outlet nozzle 93.
- the pressurized water used to supply the main chamber 66 is introduced radially into the mixing chamber 103 by means of orifices 94, preferably three orifices distributed over the periphery of the cartridge 92, the jets of which can be concurrent on the axis of said mixing chamber.
- the outer wall of the cartridge 92 is drilled radially with a first hole 104 whose diameter is less than 1 mm, and a second hole or counterbore 105 of much larger diameter.
- the diameter of hole 105 is of the order of ten times the diameter of hole 104.
- the length of hole 104 is of the same order as its diameter. So the water under pressure is injected into the mixing chamber 103 while crossing a sort of diaphragm which allows the 91 nucleation device to operate regardless of the pressure of the water introduced into the chamber main 66 for feeding sprinklers 75.
- the nucleation device can present the following characteristics: for an output at the nozzle 93 of the order 5.2 mm, we will adopt a diameter for the mixing chamber 103 of of the order of 7 mm and each of the three orifices 104 will have a diameter of the order of 0.6 mm.
- this nucleation device 91 is similar to a mini snow gun of the high pressure type, in which the air / water ratio is very important, at least equal to 200 and preferably much higher.
- the spray head 1 and in particular the base 106 of the core 65 is fixed by means of screws 107 to the intermediate connection 63, which connection 63 is itself fixed by means of screws, not shown, on the end of the mast 25.
- Figure 3 shows the distribution of the screws 85 which allow to fix the cap 84 on the upper end of the core 65.
- the distribution of the screws is such, as previously mentioned, that it imposes a precise orientation of the head relative to the core 65 and consequently an orientation also defined for the jacket 64 which carries the nozzles 75, by means of the centering pin 90 interposed between said jacket and said core.
- Figure 7 shows a variant of the spray head shown in Figure 1.
- This figure 7 shows a portion of the intermediate piece 63 on which is fixed the core 65 '.
- the core 65 ' is in the form of a molded and machined part, made of light alloy, and looks like a sort of drawer hydraulic threaded in an envelope 64 '.
- This 64 'envelope is itself consisting of a machined molded part, made of light alloy, held between the lower shoulder 81 of the core and the cap 84 'which is fixed by screws 85' to the upper end 86 'of the core 85'.
- Rooms 66, 70 and 72 are, as before, arranged between partitions. Thus we find the upper partition 67 which delimits with the partition 69, the annular chamber 66.
- the annular chamber 70 is delimited by the partition 69 and the partition 71.
- This partition 71 is interposed between the chamber 70 and the chamber 72, which annular chamber 72 is delimited at its lower part by the partition or shoulder 73.
- the partitions may have diameters which slightly increasing from the end of the core to its base 81.
- the chamber 70 is supplied by the orifice 77 and the chamber 72 is supplied by port 79.
- This nucleation device is presented as previously in FIG. 1, in the form of a cartridge 92.
- This cartridge 92 passes through the wall of the envelope 64 ′ in a sealed manner, and it is for example screwed onto this wall; it fits into a hole 110 arranged radially in the core 65 ', which orifice opens into the channel 95 for supplying pressurized air.
- the nucleation device is supplied with pressurized air at the upstream end of its mixing chamber 103, and the water supply under pressure, is effected by means of one or more orifices 94 arranged in the wall of the cartridge 92.
- the cartridge 92 of the nucleation device 91 soaks in water which circulates in chamber 66 which avoids the phenomena of freezing and plugging holes which allow water to be injected into the mixture 103.
- the core 65 'and the tubular jacket 64' can be arranged to allow positioning of nucleation 91, making an angle close to 90 ° between them.
- These devices nucleation are arranged at the bottom of the main chamber 66, each under a vertical row of spray nozzles 75, which nozzles are represented three in number Figure 7, on the same line and in the same vertical plane.
- cartridge 92 of the device (s) nucleation 91 is used to angularly position the chamber 64 'of the head spraying with respect to the core 65 ′ due to its radial fitting in said jacket and said core.
- the nozzle 93 of the nucleation device 91 is oriented like all the sprinklers 75, perpendicular to the longitudinal axis 109 of the head 1. It is arranged under the nozzles 75 of the main chamber 66 and not above as in the case of the head shown in Figure 1.
- Figures 7 and 8 show that the core 65 'has a countersink 111 at level of each of the holes 110 in which the cartridge 92 is fitted nucleation devices 91.
- the orifices 94 of the nucleation devices shown in FIG. 7, correspond to the orifices 94 represented in FIG. 2 in connection with FIG. 1.
- Figure 9 shows an alternative embodiment of the device assembly nucleation on the spray heads in the form of represented columns Figures 1 and 7.
- the nucleation device 91 ′ comprises a cartridge 92 ′ which is provided two nozzles or nozzles 93 '.
- the cartridge is centered in the median plane dihedral formed by the two rows of spray nozzles 75 while the nozzles 93 'are oriented parallel and respectively to each face said dihedral.
- This particular arrangement allows for seeding with a single nucleator, which nucleator has, in this case, orifices 94 in the cartridge 92 ′, for the injection of water, which are substantially superior to those of previous assemblies. We reduce even more, from this way the risk of freezing of the orifice (s) 104 in particular.
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Nozzles (AREA)
- Prostheses (AREA)
Description
- la figure 1 représente une tête de pulvérisation selon l'invention en coupe verticale axiale ;
- la figure 2 représente d'une façon détaillée et agrandie, un orifice d'introduction d'eau sous pression dans la chambre de mélange du dispositif de nucléation ;
- la figure 3 représente une vue de dessus de la tête de pulvérisation ;
- la figure 4 représente la tête en coupe selon 4-4 de la figure 1 ;
- la figure 5 représente la tête en coupe selon 5-5 de la figure 1 ;
- la figure 6 représente la tête en coupe selon 6-6 de la figure 1 ;
- la figure 7 représente une variante de la tête de pulvérisation représentée figure 1, en coupe verticale axiale ;
- la figure 8 représente une coupe selon 8-8 de la figure 7 ;
- la figure 9 représente une variante d'un dispositif de nucléation à deux buses, commun à deux rangées de buses de pulvérisation.
Claims (7)
- Tête de pulvérisation pour la fabricationde neige artificielle comportant plusieurs buses ou gicleurs (75) disposés radialement sur la périphérie de celle-ci alimentés de façon séparée par des circuits d'eau sous pression, caractérisée en ce que lesdites buses ou gicleurs sont disposés sur une chemise tubulaire (64, 64') dont l'axe est proche de la verticale dans les conditions de fonctionnement, laquelle chemise renferme un noyau (65, 65') qui est muni de cloisons radiales (67, 69, 71 et 73) pour diviser de façon étanche l'espace interne de ladite chemise en plusieurs chambres (66, 70 et 72), une chambre principale (66) et au moins une chambre secondaire (70, 72) qui est mise en oeuvre après la chambre principale si nécessaire, lesquelles chambres servent à alimenter une ou plusieurs buses ou gicleurs (75), lequel noyau est muni de canaux internes (99, 101, 102) connectés sur ledit circuit d'eau sous pression de façon à alimenter lesdites chambres.
- Tête de pulvérisation selon la revendication 1, caractérisée en ce que les canaux (99, 101 et 102) qui servent à alimenter respectivement les chambres (66, 70 et 72), débouchent à la partie inférieure desdites chambres, permettant ainsi une vidange totale de ces dernières lors de l'arrêt de l'installation.
- Tête de pulvérisation selon l'une quelconque des revendications 1 ou 2, caractérisée en ce que la partie supérieure de ladite tête comprend un chapeau (84) muni d'au moins un dispositif de pulvérisation (91) faisant office de nucléateur, disposé à côté ou dans le champ de la ou des buses (75) de la chambre principale (66), lequel dispositif de pulvérisation est alimenté en eau et en air sous pression, laquelle alimentation d'eau s'effectue au moyen du canal (96) servant à alimenter ladite chambre principale, lequel canal (96) transite dans ledit chapeau (84) au moyen d'une cavité annulaire (97) et se poursuit dans le noyau (65) au moyen d'un desdits canaux internes (99), et l'alimentation en air du dispositif de pulvérisation (91) s'effectue au moyen d'un canal spécifique (95) aménagé dans le noyau (65) et dans le chapeau (84), au centre de ces derniers.
- Tête de pulvérisation selon la revendication 3, caractérisée en ce que le canal (99) de la chambre principale (66) comporte un canal (100) de faible section qui s'étend entre l'extrémité inférieure de ladite chambre et le canal (96) qui amène l'eau au canal (99) après avoir transité dans le chapeau (84) par la cavité annulaire (97).
- Tête de pulvérisation selon l'une quelconque des revendications 1 ou 2, caractérisée en ce qu'elle comporte au moins un dispositif de nucléation intégré radialement dans la chemise tubulaire (64') et dans le noyau (65'), lequel dispositif de nucléation est alimenté en eau sous pression directement par la chambre principale (66) et en air sous pression par le canal central (95) cludit noyau (65').
- Tête de pulvérisation selon la revendication 5, caractérisée en ce qu'elle comprend un dispositif de nucléation (91) disposé dans le plan d'une rangée de buses (75) pour ensemencer ladite rangée.
- Tête de pulvérisation selon la revendication 5, caractérisée en ce qu'elle comporte un dispositif de nucléation (91') disposé dans le plan médian du dièdre formé par deux rangées de buses (75) pour ensemencer directement chaque rangée par le biais de deux gicleurs (93') orientés parallèlement et respectivement à chaque face dudit dièdre.
Applications Claiming Priority (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR9813477A FR2784905B1 (fr) | 1998-10-23 | 1998-10-23 | Tete de pulverisation polyvalente utilisable notamment pour la fabrication de neige artificielle |
FR9813477 | 1998-10-23 | ||
WOPCT/FR99/00258 | 1999-02-05 | ||
PCT/FR1999/000258 WO1999040381A1 (fr) | 1998-02-06 | 1999-02-05 | Generateur de particules de glace, de neige, ou nucleateur, integre dans une tete de pulverisation d'eau |
PCT/FR1999/002581 WO2000025072A1 (fr) | 1998-10-23 | 1999-10-22 | Tete de pulverisation polyvalente utilisable notamment pour la fabrication de neige artificielle |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1123479A1 EP1123479A1 (fr) | 2001-08-16 |
EP1123479B1 true EP1123479B1 (fr) | 2002-07-31 |
Family
ID=26234621
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP99950816A Expired - Lifetime EP1123479B1 (fr) | 1998-10-23 | 1999-10-22 | Tete de pulverisation polyvalente pour la fabrication de neige artificielle |
Country Status (6)
Country | Link |
---|---|
EP (1) | EP1123479B1 (fr) |
AT (1) | ATE221639T1 (fr) |
AU (1) | AU6345399A (fr) |
CA (1) | CA2347990C (fr) |
DE (1) | DE69902400T2 (fr) |
WO (1) | WO2000025072A1 (fr) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102004053984B3 (de) | 2004-10-08 | 2006-06-14 | Technoalpin Gmbh | Lanzenkopf für eine Schneelanze sowie Düsenanordnung |
FR2877076A1 (fr) * | 2004-10-27 | 2006-04-28 | Snowstar | Dispositif de production de neige artificielle |
FR3103030B1 (fr) | 2019-11-07 | 2022-06-17 | Technoalpin France | Dispositif de pulvérisation pour la fabrication de neige artificielle et son procédé de mise en œuvre |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3829013A (en) * | 1971-11-03 | 1974-08-13 | H Ratnik | Snow making apparatus |
US5004151A (en) * | 1989-11-20 | 1991-04-02 | Dupre Herman K | Method and apparatus for making snow |
CA2258424C (fr) * | 1995-10-30 | 2000-04-25 | Vernon Lorne Mckinney | Canon a neige |
US5823427A (en) * | 1995-11-13 | 1998-10-20 | Snow Economics, Inc. | Method and apparatus for making snow |
-
1999
- 1999-10-22 DE DE69902400T patent/DE69902400T2/de not_active Expired - Fee Related
- 1999-10-22 AT AT99950816T patent/ATE221639T1/de active
- 1999-10-22 AU AU63453/99A patent/AU6345399A/en not_active Abandoned
- 1999-10-22 EP EP99950816A patent/EP1123479B1/fr not_active Expired - Lifetime
- 1999-10-22 WO PCT/FR1999/002581 patent/WO2000025072A1/fr not_active Application Discontinuation
- 1999-10-22 CA CA2347990A patent/CA2347990C/fr not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
DE69902400D1 (de) | 2002-09-05 |
ATE221639T1 (de) | 2002-08-15 |
EP1123479A1 (fr) | 2001-08-16 |
AU6345399A (en) | 2000-05-15 |
CA2347990C (fr) | 2010-09-07 |
DE69902400T2 (de) | 2003-04-03 |
CA2347990A1 (fr) | 2000-05-04 |
WO2000025072A1 (fr) | 2000-05-04 |
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