EP2467654A2 - Vorrichtung zur herstellung von künstlichem schnee - Google Patents

Vorrichtung zur herstellung von künstlichem schnee

Info

Publication number
EP2467654A2
EP2467654A2 EP10807316A EP10807316A EP2467654A2 EP 2467654 A2 EP2467654 A2 EP 2467654A2 EP 10807316 A EP10807316 A EP 10807316A EP 10807316 A EP10807316 A EP 10807316A EP 2467654 A2 EP2467654 A2 EP 2467654A2
Authority
EP
European Patent Office
Prior art keywords
compressor
heat exchanger
compressed air
outlet
primary part
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
EP10807316A
Other languages
English (en)
French (fr)
Other versions
EP2467654B8 (de
EP2467654B1 (de
Inventor
Oleg Korobochkin
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.)
Atlas Copco Airpower NV
Original Assignee
Atlas Copco Airpower NV
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 Atlas Copco Airpower NV filed Critical Atlas Copco Airpower NV
Priority to SI201030438T priority Critical patent/SI2467654T1/sl
Publication of EP2467654A2 publication Critical patent/EP2467654A2/de
Application granted granted Critical
Publication of EP2467654B1 publication Critical patent/EP2467654B1/de
Publication of EP2467654B8 publication Critical patent/EP2467654B8/de
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

Links

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 device for making artificial snow.
  • Devices are already known for manufacturing artificial snow by using water and compressed air, whereby water is atomised in compressed gas and. the atomised water is frozen by the cooling effect of the air expansion.
  • a compressor is used to supply the compressed gas in the known devices.
  • the compressed gas which generally consists of air
  • the known devices thus also contain one or more after- coolers to cool the compressed air, such that the moisture in the compressed air condenses as a result of cooling and can be separated as a condensate using a water separator or similar .
  • after-coolers are generally constructed in the form of air-air regenerative heat exchangers, in which the incoming hot compressed air is cooled by compressed air that has already been cooled.
  • the known devices are incorporated in a building of substantial dimensions in which the compressor is housed, and whereby the inlet of the compressor is connected to the outside air to draw in the air to be compressed, while the outlet of the compressor installation is connected to a snow gun to supply the compressed air.
  • the pipes provided for the realisation of the abovementioned connections are sizeable in order to emit the heat from the compressed air to the space in the abovementioned building, and to utilise this heat to warm up the cold air drawn in.
  • Another disadvantage is that the temperature of the compressed gas at the inlet of the snow cannon is difficult to control.
  • a disadvantage attached to this is that the quality of the snow produced depends on the weather conditions, such that the device has rather limited reliability. Improved devices are also known, in which there is an additional heat exchanger after the after-cooler for the purpose of controlling the temperature of the outgoing compressed gas. A disadvantage is that such a device only enables rudimentary control of the temperature, such that it is not possible to produce high-quality snow under all conditions. A further disadvantage is that the heat exchanger cannot prevent moisture condensing in the after-cooler and freezing there.
  • a further additional disadvantage is that the known devices use a lot of energy.
  • the purpose of the present invention is to provide a solution to one or more of the abovementioned and/or other disadvantages, by providing a device for making artificial snow by means of a snow cannon in which water is atomised by means of compressed air, whereby this device is provided with a compressor for supplying compressed air, which compressor is positioned in a compressor area with an inlet for supplying air from the environment and an outlet to deliver the compressed air to the snow cannon via a pipe, whereby, according to the specific characteristic of the invention, the abovementioned device comprises a heat exchanger with a primary part and a secondary part, whereby the compressed air from the compressor is guided through the primary part, and whereby the abovementioned secondary part makes part of the evaporator of a closed cooling circuit in which a coolant is circulated by means of a compressor element that is driven by a drive, and whereby the abovementioned device includes a controller for controlling the abovementioned cooling circuit in order to obtain the desired temperature or pressure dew point at
  • An advantage is that the temperature of the compressed air at the outlet of the primary part of the heat exchanger can be well controlled, such that the snow produced is always of a very good quality and the quality of the snow is not subject to the weather conditions.
  • the invention enables the cooling circuit to be controlled accurately so that the desired temperature and/or desired pressure dew point of the compressed air is realised.
  • Another advantage is that the device is relatively compact with respect to the known devices.
  • the device can be incorporated into a container and thus be produced as a mobile device.
  • An advantage of this is that the container can be easily transported, such that the device can deliver compressed air for the production of snow at different locations, and consequently a relatively large piping system is not needed to connect different snow cannons to one centrally located device for supplying compressed air.
  • the cooling circuit contains a second heat exchanger that forms the condenser of the cooling circuit, and which is located downstream from the compressor element and upstream from the expansion means provided in the cooling circuit.
  • the coolant that flows through this second heat exchanger is cooled by a fan.
  • the abovementioned fan is arranged such that it blows air over ⁇ the second heat exchanger to the -compressor area .
  • An advantage of this is that the fan distributes warm air in the compressor area, such that the temperature in the compressor area is above 0° thereby avoiding freezing, and damage due to freezing is thus completely ruled out.
  • a further advantage is that no extra large pipes are needed between the outlet of the primary part of the heat exchanger and the inlet of the snow cannon.
  • the temperature of the compressed air at the outlet of the primary part of the heat exchanger is less than 8° Celsius and preferably around 3° Celsius.
  • the compressed air at the outlet of the primary part of the heat exchanger presents a pressure of 8 bar or almost 8 bar.
  • the air is compressed by means of an oil-free compressor such as a water-injected screw compressor.
  • the device 1 for making artificial snow primarily contains a compressor area 2 with a housing 3, which has an inlet 4 for supplying air from the environment and an outlet 5 for removing the compressed gas such as air.
  • the housing 3 is formed by a container that can be mobile or by a building or similar.
  • the dimensions of the housing 3 can, for example, be limited to a floor plan of six metres by six metres, in contrast to existing devices where buildings are used with dimensions that are dozens of metres long and wide.
  • a snow cannon 6 can be supplied with compressed air through a pipe 7.
  • the snow cannon 6 also has a supply pipe 8 for water, such that water is atomised by the compressed air in a known way at the outlet of the snow cannon 6, such that snow crystals are formed that disperse from the muzzle of the snow cannon 6.
  • a compressor 9 in the compressor area 2 with an inlet for drawing in air and an outlet 11 for removing the compressed air .
  • the abovementioneid compressor 9 is driven in a known way by means of a drive 10, such as for example, but not necessarily, an electric motor.
  • the abovementioned compressor 9 can consist of a single compressor element, as shown in the drawing, but can also be constructed as a multistage compressor, whereby the air is compressed by a number of consecutive compressor elements .
  • the compressor 9 only contains water-injected compressor elements and intercoolers can also be placed between successive pressure stages. It goes without saying that the invention is not limited to this, as a different type of oil-free compressor, or an oil- injected compressor with -appropriate air filtering can be used just as well.
  • the compressor 9 is set to a maximum service pressure of between 8 bar and 9 bar, and preferably a maximum service pressure of 8.5 bar or almost 8.5 bar.
  • a heat exchanger 12 in the compressor area 2 for the cooling of the compressed air with a primary part and a secondary part, whereby the inlet 13 of the primary part is connected to the outlet 11 of the compressor 9.
  • the heat exchanger 12 is designed such that the pressure drop of the compressed air that goes through the primary part is less than 0.2 bar, or even better less than 0.1 bar, and preferably even less than 0.05 bar.
  • the secondary part of the abovementioned heat exchanger 12 forms the evaporator 16 of a closed cooling circuit 17 that is filled with a coolant or cooling fluid.
  • the coolant is circulated by means of a compressor element 18 in the cooling circuit 17, and this compressor element 18 is driven by a drive 19.
  • condenser 20 is formed by a second heat exchanger and this second heat exchanger is cooled by means of a fan 22 that blows air over the condenser 20 and this air is further blown into the compressor area 2.
  • the speed of the abovementioned fan 22 can be adjusted in order to control the temperature of the coolant at the outlet of the condenser 20.
  • the abovementioned fan can, for example, be driven by means of a speed-controlled motor that is connected to a control unit to which measuring means are also connected to measure the abovementioned temperature at the outlet of the condenser, for example in the form of a temperature sensor in the pipe section between the expansion valve 21 and the condenser 20.
  • the expansion valve 21 can be constructed as a thermostatic or electronic valve and this valve 21 is connected to a temperature sensor 23 that is positioned at the outlet 14 of the primary circuit.
  • the device is equipped with a controller 24 to control the flow of the coolant, and the abovementioned controller 24 ensures the realisation of the desired temperature or pressure dew point at the outlet 14 of the primary part of the heat exchanger 12.
  • the controller 24 can thus control the speed of the drive 19, whereby a drive is used in the form of a frequency-controlled motor, for example.
  • the controller 24 can also be used to control the motor of the fan 22 and/or to control the expansion valve 21, and if applicable to also drive the drive 10 of the compressor 9.
  • the method for making artificial snow by means of a device 1 according to the invention is very simple and as follows.
  • a gas such as air is drawn into the compressor area 2 and compressed by the compressor 9.
  • the ho.t compressed air is first driven through the after-cooler 25 and the second water separator 26, after which this already partially cooled gas is guided through the primary part of the heat exchanger 12, such that the compressed air at the outlet 14 of the primary part has an even lower temperature.
  • the condensate that is formed in the after-cooler 25 and the heat exchanger 12 is separated in the respective liquid separators 26 and 15, and the cold less moist air is then taken to the snow canon 6 via a pipe 7.
  • the water will be atomised by the cooled compressed air so that snow crystals are formed.
  • the cooling of the compressed air in the primary part of the heat exchanger 12 is realised by driving a coolant through the secondary part of the heat exchanger 12.
  • this coolant flows in the opposite direction to the air that flows through the primary part of this heat exchanger .
  • the abovementioned coolant is heated and then cooled by the condenser 20, which in this case is placed immediately downstream from the compressor element 18 in the cooling circuit 17.
  • the temperature of the coolant will then fall by flowing through the last-mentioned condenser 20, as the fan 22 blows air over this condenser 20.
  • the air that is blown over the condenser 20 by the fan 22 is heated.
  • the coolant that leaves the condenser 20 is then guided through the expansion valve 21, and then again to the inlet of the secondary part of the heat exchanger 12.
  • a conventional cool dryer can be used if necessary, however the air-air recuperative heat exchanger that is normally used in such a cool dryer is left out.
  • the present invention is by no means limited to the embodiment described as an example and shown in the drawing, but a device 1 according to the invention for making artificial snow can be realised in all kinds of variants, without departing from the scope of the invention .

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Thermal Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Drying Of Gases (AREA)
EP10807316.4A 2009-12-16 2010-11-17 Vorrichtung zur herstellung von künstlichem schnee Not-in-force EP2467654B8 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
SI201030438T SI2467654T1 (sl) 2009-12-16 2010-11-17 Naprava za izdelavo umetnega snega

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
BE2009/0795A BE1019114A3 (nl) 2009-12-16 2009-12-16 Inrichting voor het maken van kunstmatige sneeuw.
PCT/BE2010/000079 WO2011072344A2 (en) 2009-12-16 2010-11-17 Device for making artificial snow

Publications (3)

Publication Number Publication Date
EP2467654A2 true EP2467654A2 (de) 2012-06-27
EP2467654B1 EP2467654B1 (de) 2013-08-28
EP2467654B8 EP2467654B8 (de) 2013-10-02

Family

ID=42238243

Family Applications (1)

Application Number Title Priority Date Filing Date
EP10807316.4A Not-in-force EP2467654B8 (de) 2009-12-16 2010-11-17 Vorrichtung zur herstellung von künstlichem schnee

Country Status (13)

Country Link
US (1) US20120286060A1 (de)
EP (1) EP2467654B8 (de)
JP (1) JP2013514511A (de)
KR (1) KR20120129862A (de)
CN (1) CN102667373A (de)
BE (1) BE1019114A3 (de)
CA (1) CA2771690A1 (de)
DK (1) DK2467654T3 (de)
ES (1) ES2436454T3 (de)
NZ (1) NZ600645A (de)
RU (1) RU2505759C1 (de)
SI (1) SI2467654T1 (de)
WO (1) WO2011072344A2 (de)

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UA108714C2 (uk) * 2011-10-01 2015-05-25 Спосіб одержання снігу та пристрій для здійснення способу
DE102015104154B4 (de) * 2015-03-19 2022-11-24 Beko Technologies Gmbh Drucktaupunktgesteuerte Spülluftregeleinheit
WO2016164500A1 (en) 2015-04-06 2016-10-13 Snow Logic, Inc. Snowmaking automation system and modules
KR101869550B1 (ko) * 2016-11-14 2018-06-25 주식회사 스노우테크 강설 부스
CN107024049A (zh) * 2017-06-01 2017-08-08 深圳市新力合制冰技术有限公司 新型造雪装置
WO2019175905A1 (en) * 2018-03-13 2019-09-19 Viglundsson Thorsteinn I Method and apparatus for making wet snow
CN109163483B (zh) * 2018-08-31 2024-01-19 福建雪人制冷设备有限公司 造雪及送雪系统
EP3839383B1 (de) * 2019-12-20 2022-10-12 Ningbo Geely Automobile Research & Development Co. Ltd. Verfahren und fahrzeugklimasystem mit konfiguration zur erzeugung eines schneeeffekts im inneren eines fahrzeugs
CN112984884B (zh) * 2021-05-17 2022-05-20 北京建筑大学 一种适用于正温环境的造雪机造雪方法

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FR1372024A (fr) * 1963-08-02 1964-09-11 Bertin & Cie Perfectionnements apportés à la production de neige, notamment en vue de la fabrication de pistes de ski artificielles
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Also Published As

Publication number Publication date
DK2467654T3 (da) 2013-11-25
ES2436454T3 (es) 2014-01-02
KR20120129862A (ko) 2012-11-28
BE1019114A3 (nl) 2012-03-06
EP2467654B8 (de) 2013-10-02
NZ600645A (en) 2013-10-25
WO2011072344A3 (en) 2011-08-18
JP2013514511A (ja) 2013-04-25
US20120286060A1 (en) 2012-11-15
WO2011072344A2 (en) 2011-06-23
RU2505759C1 (ru) 2014-01-27
RU2012126949A (ru) 2014-01-20
CN102667373A (zh) 2012-09-12
SI2467654T1 (sl) 2013-12-31
EP2467654B1 (de) 2013-08-28
CA2771690A1 (en) 2011-06-23
WO2011072344A8 (en) 2012-02-16

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