EP1906120A1 - Appareil domestique pour la fourniture d'eau ou autres boissons refroidies et procédé de fonctionnement correspondant - Google Patents

Appareil domestique pour la fourniture d'eau ou autres boissons refroidies et procédé de fonctionnement correspondant Download PDF

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Publication number
EP1906120A1
EP1906120A1 EP07114478A EP07114478A EP1906120A1 EP 1906120 A1 EP1906120 A1 EP 1906120A1 EP 07114478 A EP07114478 A EP 07114478A EP 07114478 A EP07114478 A EP 07114478A EP 1906120 A1 EP1906120 A1 EP 1906120A1
Authority
EP
European Patent Office
Prior art keywords
tank
beverage
water
appliance
source
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Withdrawn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
EP07114478A
Other languages
German (de)
English (en)
Inventor
Thomas Volker
Tancredi Ingrassia
Silvia Minetto
Daniel L. c/o ELECTROLUX HOME PRODUCTS ITALY S.p.A. Johansson
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.)
Electrolux Home Products Corp NV
Original Assignee
Electrolux Home Products Corp 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
Priority claimed from EP06121582A external-priority patent/EP1906119A1/fr
Application filed by Electrolux Home Products Corp NV filed Critical Electrolux Home Products Corp NV
Priority to EP07114478A priority Critical patent/EP1906120A1/fr
Publication of EP1906120A1 publication Critical patent/EP1906120A1/fr
Withdrawn legal-status Critical Current

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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
    • F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D23/00—General constructional features
    • F25D23/12—Arrangements of compartments additional to cooling compartments; Combinations of refrigerators with other equipment, e.g. stove
    • F25D23/126—Water cooler
    • 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
    • F25C2301/00—Special arrangements or features for producing ice
    • F25C2301/002—Producing ice slurries
    • 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
    • F25C2400/00—Auxiliary features or devices for producing, working or handling ice
    • F25C2400/10—Refrigerator units
    • 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
    • F25C2400/00—Auxiliary features or devices for producing, working or handling ice
    • F25C2400/14—Water supply
    • 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
    • F25C5/00—Working or handling ice
    • F25C5/02—Apparatus for disintegrating, removing or harvesting ice
    • 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
    • F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D23/00—General constructional features
    • F25D23/02—Doors; Covers
    • F25D23/04—Doors; Covers with special compartments, e.g. butter conditioners
    • 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
    • F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D2317/00—Details or arrangements for circulating cooling fluids; Details or arrangements for circulating gas, e.g. air, within refrigerated spaces, not provided for in other groups of this subclass
    • F25D2317/06—Details or arrangements for circulating cooling fluids; Details or arrangements for circulating gas, e.g. air, within refrigerated spaces, not provided for in other groups of this subclass with forced air circulation
    • F25D2317/066—Details or arrangements for circulating cooling fluids; Details or arrangements for circulating gas, e.g. air, within refrigerated spaces, not provided for in other groups of this subclass with forced air circulation characterised by the air supply
    • F25D2317/0666—Details or arrangements for circulating cooling fluids; Details or arrangements for circulating gas, e.g. air, within refrigerated spaces, not provided for in other groups of this subclass with forced air circulation characterised by the air supply from the freezer
    • 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
    • F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D2323/00—General constructional features not provided for in other groups of this subclass
    • F25D2323/122—General constructional features not provided for in other groups of this subclass the refrigerator is characterised by a water tank for the water/ice dispenser
    • 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
    • F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D2331/00—Details or arrangements of other cooling or freezing apparatus not provided for in other groups of this subclass
    • F25D2331/80—Type of cooled receptacles
    • F25D2331/806—Dispensers

Definitions

  • the present invention relates to a household appliance for the supplying of cooled water or other beverage and to the relative operation method.
  • the present invention relates to a household cooled-drink dispenser integrated in a household appliance as a free-standing or built-in refrigerator or a stand-alone unit, to which the following description refers purely by way of example.
  • a built-in cooled-water dispenser which substantially comprises a tank for storing water or any other beverage to be dispensed; a cooling assembly for bringing the water inside the tank to, and maintaining it at, a predetermined reference temperature above the freezing temperature (i.e. 0°C) of water and normally ranging between 8°C and 15°C; and a metering valve located at a drink dispensing recess formed in the outer surface of the refrigerator door.
  • the valve is connected to the bottom of the tank by a connecting pipe, and is designed to only allow controlled outflow of water from the tank to the drink dispensing recess underneath when the recess is engaged by a glass or other container to receive the water.
  • the cooled-drink dispenser in fact can only dispense the water or any other beverage at the desired temperature after the tank has been filled by the user with the desired beverage, and after the cooling assembly has brought the beverage inside the tank to the set reference temperature.
  • the inside of the tank is an ideal receptacle for mould and bacteria, with all the risks this involves in the event the cooled-drink dispenser is only used sporadically, and the beverage is allowed to stagnate inside the tank for long periods of time.
  • an appliance for the supplying of cooled water or other beverage as claimed in Claim 1 and preferably, though not necessarily, in any one of the dependent Claims.
  • an operating method of an appliance for the supplying of cooled water or other beverage is also provided.
  • number 2 indicates as a whole a household appliance, preferably a refrigerator, having integrated therein a cooled-drink dispenser 1, so as to be suitable to supply cooled water or other beverage.
  • the cooled-drink dispenser 1 is preferably integrated inside a door 3 of the appliance 2.
  • the cooled-drink dispenser 1 comprises a tank 4 for temporarily storing water or any other beverage to be dispensed.
  • the tank 4 is designed so that it can be completely filled by the water or other beverage, although during operations it can be also partially refilled.
  • the dispenser 1 also comprises a metering valve 5 which, in the example shown, is located at a drink dispensing recess 3a formed in the outer surface of door 3 of refrigerator 2.
  • the valve 5 is connected to tank 4 by a connecting pipe 6, and is designed to only permit controlled outflow of water or any other beverage from tank 4 to recess 3a when recess 3a is engaged by a glass or other container to receive the water.
  • the tank 4 is completely housed, in the example shown in Figs. 2, inside a cooling compartment 3b formed in the door 3 above recess 3a; alternatively, as shown in the embodiment of Figure 4 described later, the tank 4 may have parts extending outside the compartment 3b.
  • the cooled-drink dispenser 1 also comprises a second connecting pipe 7 permanently connecting tank 4 to a source 8 of pressurized water or other beverage so that tank 4 is always completely filled with water and does not contain air.
  • the dispenser 1 further comprises a cooling assembly 9 which, on command, cools the liquid inside tank 4, and an electronic central control unit 10 which controls cooling assembly 9 on the basis of signals from a temperature sensor (not shown) for determining the temperature of the liquid inside tank 4, so as to bring the water or other beverage inside tank 4 to, and maintain it at, a reference temperature below or equal to the freezing temperature To (i.e. 0°C) of water or other beverage.
  • a temperature sensor not shown
  • source 8 supplies water or any other beverage continuously at above atmospheric pressure
  • the cooled-drink dispenser 1 preferably, though not necessarily, also comprises an on-off valve 11 located along connecting pipe 7, upstream from tank 4, and which, on command, isolates tank 4 from source 8 to cut off flow of water or other beverage.
  • source 8 is defined by the drinking water circuit of the building in which refrigerator 2 is located.
  • Tank 4 is advantageously defined by a variable-capacity container 4, which is preferably airtight.
  • tank 4 is defined by a tubular body made of elastically deformable material, for instance silicone.
  • the tubular body may be closed hermetically at both ends by two caps of rigid material to form a variable-volume closed container.
  • the two caps are connected to the two connecting pipes 6 and 7 to allow water to flow from source 8 to metering valve 5 via the whole of tank 4.
  • the two ends may be properly extruded so as to fit with the two connecting pipes, and/or they can be fastened to the connecting pipes by means of hose clamps.
  • tank 4 may be defined by a hermetically closed rigid container of constant internal volume and housing a closed capsule or container made of elastically deformable material and filled with gas.
  • the length, the internal diameter and the wall thickness of the tank 4 may vary depending on the design and specifications of the dispenser, such as the amount and the temperature of the liquid to be dispensed.
  • the tank is a relatively short and large cylinder, while in the illustration of Figure 4 it is an elongated tubular body.
  • the tank 4 can be a silicone tube of 1 m length and 18 mm internal diameter.
  • cooling assembly 9 comprises a number of electric fans which, on command, circulate, inside compartment 3b, a stream of cold air at a temperature below temperature T 0 and/or a stream of hot air at a temperature above temperature T 0 .
  • the electronic central control unit 10 is able to control the fans to alternate and/or mix the two air streams to bring the liquid inside tank 4 to, and maintain it at, around freezing temperature T 0 .
  • the stream of cold air may come from the freezer compartment of refrigerator 2 storing frozen food requiring a temperature of -25°C to -20°C
  • the stream of hot air may come from the fresh-food compartment of refrigerator 2 storing fresh food requiring a temperature of 2°C to 8°C.
  • the fans may be replaced by a conventional heatpump refrigeration circuit in which the evaporator is housed inside compartment 3b, close to tank 4, or by other refrigeration means.
  • the cooled-drink dispenser 1 may also comprise a sensor 12 for determining and communicating to the electronic central control unit 10 the amount of solid-state water or other beverage contained at all times inside tank 4.
  • the dispenser may also comprise means for preventing the formation of a single block of frozen liquid occupying the whole volume of tank 4 so as to obtain a biphasic (liquid state plus solid state) frozen liquid mixture, and preferably for assisting irregular, non-homogeneous crystallization of the liquid inside tank 4, so as to obtain a semisolid, high-viscosity, frozen liquid mixture.
  • the cooled-drink dispenser 1 may comprise a freezing process control device 13 designed to force the liquid freezing inside tank 4 to crystallize irregularly and non-homogeneously into a semisolid, high-viscosity mixture or slurry.
  • the freezing process control device 13 is defined by an ultrasonic-frequency vibration emitter positioned close to tank 4, and which, under the control of electronic central control unit 10, breaks up the ice or crystallized beverage formed in tank 4 to obtain said semisolid, high-viscosity mixture of frozen water or other beverage.
  • the formation of a block of ice or frozen beverage inside tank 4 may also be prevented by cyclically and locally heating areas of tank 4 under the control of electronic central control unit 10, e.g. by means of a number of appropriately controlled resistors arranged inside the tank, to prevent the ice or frozen beverage crystals from adhering permanently to and forming layers on the walls of the tank.
  • tank 4 may also be designed and/or cooled to restrict the formation of ice or frozen beverage crystals to certain predetermined points on the wall of the tank.
  • freezing process control device 13 may be defined by an electrically operated propeller or stirring body housed inside tank 4 to keep the liquid inside the tank moving and detach the ice or frozen beverage crystals from the wall as they are formed.
  • the dispenser 1 can be realized without any freezing process control device, since the tubular body defining the tank 4 is so designed that, even if ice is formed therein so as to obstruct the passage when no liquid is supplied, it can radially expand when there is a sufficient pressure of liquid at its entrance, so as to allow liquid flow.
  • the dispenser 1 of Figure 4 is therefore designed so as to allow passage of a liquid 20 between the ice formed inside tank 4, indicated with 19, and the internal wall of tank 4.
  • the radial arrows indicate the outwardly expansion of the tank 5 when liquid (water or other beverage) is supplied at a pressure higher than atmospheric pressure.
  • the dispenser 1 may also include a pump 18 along pipe 6.
  • a pump could be included along pipe 7.
  • the dispenser 1 may be designed so that some portions 4a of the tank 4, but their ending parts, are internal the compartment 3b, while others, indicated with 4b, are external.
  • the internal portions 4a are preferably straight and parallel with each other, while the external portions 4b, defining interconnection portions, are preferably bent.
  • the external portions 4b and the endings parts of portions 4a are substantially at environmental temperature, so that ice formation is prevented in these parts.
  • the tank 4 could be a uniform elongated tube properly bent inside the compartment 3b, but the bending radius should be such as to allow the tube expansion when ice is completely formed inside.
  • the Applicant has observed that, if ice obstructs the passage in a bent portion of the tank, the tank could be unable to expand in that portion to allow liquid flow if the bent is sharp.
  • the initial and the final portions of the tank 4, indicated with 4c and 4d respectively, are external the compartment 3b, so that ice formation is prevented also in these zones, to facilitate liquid flow when the valves 5 and/or 11 are opened.
  • electronic central control unit 10 controls cooling assembly 9 to bring the liquid inside tank 4 rapidly to below the freezing temperature To of water and so freeze the liquid.
  • the dispenser comprises also a freezing process control device 13 (i.e. the means for preventing the formation of a block of frozen liquid inside tank 4)
  • the control unit 10 also controls device 13 to force the water or other beverage freezing inside tank 4 to crystallize irregularly and non-homogeneously into a biphasic or semisolid, high-viscosity, frozen drink mixture or slurry.
  • electronic central control unit 10 continuously controls the percentage of water that has passed from the liquid state to the solid or semisolid frozen water mixture state inside tank 4, and controls cooling assembly 9 so that the percentage of water in the solid or semisolid mixture state does not exceed a predetermined maximum threshold ranging between 50% and 90% of the maximum capacity of tank 4, so as to ensure free circulation of the water at all times inside tank 4.
  • a predetermined maximum threshold ranging between 50% and 90% of the maximum capacity of tank 4, so as to ensure free circulation of the water at all times inside tank 4.
  • this control may be absent in the embodiment of Figure 4.
  • the cooled-drink dispenser 1 is ready to dispense cooled water as soon as a sufficient amount of solid or semisolid frozen water mixture is produced inside tank 4.
  • Insertion of a glass inside recess 3a in door 3 opens metering valve 5 to allow the water in tank 4 to flow along connecting pipe 6 into the glass.
  • Tank 4 being connected directly to pressurized-water source 8, the outflow of cooled water from tank 4 along connecting pipe 6 is accompanied by a simultaneous inflow into tank 4 of an equal amount of water at ambient temperature from source 8.
  • the water at ambient temperature from source 8 mixes with and partly melts the solid or semisolid frozen water mixture to form cooled water at a temperature of 8°C to 15°C (i.e. at a temperature below ambient temperature), which flows immediately along connecting pipe 6 into the glass.
  • Cooled-drink dispenser 1 has numerous advantages. Above all, it provides for dispensing a quantity of cooled water, at a temperature ranging between 8°C and 15°C, much greater than the nominal capacity of tank 4, by using the solid or semisolid frozen water mixture as a thermal flywheel to rapidly cool the water from source 8.
  • tank 4 is always filled completely with water at a temperature of substantially 0°C considerably reduces the growth-rate of mould and bacteria.
  • the cooled-drink dispenser 1 may comprise, downstream from tank 4, an electrically operated hydraulic mixer 14 for mixing the cooled water flowing out of tank 4 along connecting pipe 6 with the ambient-temperature water from source 8.
  • hydraulic mixer 14 is a three-way mixer having a first inlet connected to tank 4 by connecting pipe 6; a second inlet connected to connecting pipe 7, upstream from tank 4 and downstream from on-off valve 11, by a bypass pipe 15; and one outlet connected to metering valve 5 by a connecting pipe 16.
  • electronic central control unit 10 controls hydraulic mixer 14 on the basis of signals from a temperature sensor for determining the temperature of the water supply to metering valve 5, so as to adjust the temperature of the water supplied to metering valve 5 by appropriately mixing the cooled water from tank 4 with the ambient-temperature water directly from source 8.
  • the household appliance 1 described above may have other uses.
  • it can be used for cooling down the water in entrance to a traditional icemaker.
  • metering valve 5 is replaced by a traditional electrically controlled throttle valve or on-off valve located just before the icemaker so as to control the outflow of the water from tank 4 to the icemaker.
EP07114478A 2006-09-29 2007-08-16 Appareil domestique pour la fourniture d'eau ou autres boissons refroidies et procédé de fonctionnement correspondant Withdrawn EP1906120A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP07114478A EP1906120A1 (fr) 2006-09-29 2007-08-16 Appareil domestique pour la fourniture d'eau ou autres boissons refroidies et procédé de fonctionnement correspondant

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP06121582A EP1906119A1 (fr) 2006-09-29 2006-09-29 Appareil ménager pour la fourniture d'eau ou d'autres boissons réfrigérées et son procédé de fonctionnement
EP07114478A EP1906120A1 (fr) 2006-09-29 2007-08-16 Appareil domestique pour la fourniture d'eau ou autres boissons refroidies et procédé de fonctionnement correspondant

Publications (1)

Publication Number Publication Date
EP1906120A1 true EP1906120A1 (fr) 2008-04-02

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Family Applications (1)

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EP07114478A Withdrawn EP1906120A1 (fr) 2006-09-29 2007-08-16 Appareil domestique pour la fourniture d'eau ou autres boissons refroidies et procédé de fonctionnement correspondant

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EP (1) EP1906120A1 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9038401B2 (en) 2008-09-26 2015-05-26 Electrolux Home Products Corporation N.V. Beverage cooler, a refrigerator comprising such a beverage cooler and a method for cooling beverage
CN112826326A (zh) * 2021-03-19 2021-05-25 广东斯柯电器有限公司 一种可快速换罐的冷热饮装置
EP4083542A4 (fr) * 2019-12-27 2023-01-25 Daikin Industries, Ltd. Dispositif d'alimentation en glace et système de fabrication de glace
CN115747515A (zh) * 2022-11-25 2023-03-07 宁波锦越新材料有限公司 一种高纯铝连续提纯设备

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2644318A (en) * 1950-01-06 1953-07-07 Gen Electric Water cooler for refrigerator
US3908394A (en) * 1974-11-14 1975-09-30 Gen Electric Water-dispensing system
US5315845A (en) * 1991-04-17 1994-05-31 Samsung Electronics Co., Ltd. Cooling water storage tank of a refrigerator
GB2329460A (en) * 1997-09-23 1999-03-24 Lg Electronics Inc Refrigerator dispenser assembly
WO2004102088A1 (fr) * 2003-05-16 2004-11-25 Elizabeth Acton Procede et appareil pour la congelation de grands volumes
JP2006176132A (ja) * 2004-12-20 2006-07-06 Expert Wave Kk 給水装置および過冷却等価水の製造方法

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2644318A (en) * 1950-01-06 1953-07-07 Gen Electric Water cooler for refrigerator
US3908394A (en) * 1974-11-14 1975-09-30 Gen Electric Water-dispensing system
US5315845A (en) * 1991-04-17 1994-05-31 Samsung Electronics Co., Ltd. Cooling water storage tank of a refrigerator
GB2329460A (en) * 1997-09-23 1999-03-24 Lg Electronics Inc Refrigerator dispenser assembly
WO2004102088A1 (fr) * 2003-05-16 2004-11-25 Elizabeth Acton Procede et appareil pour la congelation de grands volumes
JP2006176132A (ja) * 2004-12-20 2006-07-06 Expert Wave Kk 給水装置および過冷却等価水の製造方法

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9038401B2 (en) 2008-09-26 2015-05-26 Electrolux Home Products Corporation N.V. Beverage cooler, a refrigerator comprising such a beverage cooler and a method for cooling beverage
EP4083542A4 (fr) * 2019-12-27 2023-01-25 Daikin Industries, Ltd. Dispositif d'alimentation en glace et système de fabrication de glace
CN112826326A (zh) * 2021-03-19 2021-05-25 广东斯柯电器有限公司 一种可快速换罐的冷热饮装置
CN115747515A (zh) * 2022-11-25 2023-03-07 宁波锦越新材料有限公司 一种高纯铝连续提纯设备
CN115747515B (zh) * 2022-11-25 2023-07-14 宁波锦越新材料有限公司 一种高纯铝连续提纯设备

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