CN101978231A - Method for manufacturing ice pieces - Google Patents

Method for manufacturing ice pieces Download PDF

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Publication number
CN101978231A
CN101978231A CN2009801095561A CN200980109556A CN101978231A CN 101978231 A CN101978231 A CN 101978231A CN 2009801095561 A CN2009801095561 A CN 2009801095561A CN 200980109556 A CN200980109556 A CN 200980109556A CN 101978231 A CN101978231 A CN 101978231A
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CN
China
Prior art keywords
water
ice cube
mould
compressor
temperature
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.)
Pending
Application number
CN2009801095561A
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Chinese (zh)
Inventor
S·霍尔策
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.)
BSH Hausgeraete GmbH
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BSH Bosch und Siemens Hausgeraete GmbH
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Filing date
Publication date
Application filed by BSH Bosch und Siemens Hausgeraete GmbH filed Critical BSH Bosch und Siemens Hausgeraete GmbH
Publication of CN101978231A publication Critical patent/CN101978231A/en
Pending legal-status Critical Current

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    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25CPRODUCING, WORKING OR HANDLING ICE
    • F25C1/00Producing ice
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25BREFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B2600/00Control issues
    • F25B2600/02Compressor control
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25CPRODUCING, WORKING OR HANDLING ICE
    • F25C2600/00Control issues
    • F25C2600/04Control means
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25CPRODUCING, WORKING OR HANDLING ICE
    • F25C2700/00Sensing or detecting of parameters; Sensors therefor
    • F25C2700/12Temperature of ice trays
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02PCLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P60/00Technologies relating to agriculture, livestock or agroalimentary industries
    • Y02P60/80Food processing, e.g. use of renewable energies or variable speed drives in handling, conveying or stacking
    • Y02P60/85Food storage or conservation, e.g. cooling or drying

Abstract

The invention relates to a method for manufacturing ice pieces, comprising a first step (S1) of filling a mold with water, a second step (S2) of cooling the water by way of a compressor-operated cooler with an initial compression power and a third step (S3) of reducing the compression power at a time after the beginning of freezing of the water. These method steps facilitate the production of ice pieces from water in a more energy-efficient manner. In a preferred embodiment, the method comprises a fourth step (S4) of shutting off the compressor after the ice pieces are produced from the water, a fifth step (S5) of leaving the ice pieces in the mold for a rest period and a sixth step (S6) of heating the mold for thawing the ice pieces to facilitate the release of the ice pieces from the mold at the end of the rest period.

Description

Ice making method
Technical field
The present invention relates to ice making method.
Background technology
For example from patent publication us DE 102005003237A1 integrated ice machine in the family expenses electric refrigerator as can be known, the low temperature in the freezing cabin of household refrigerating appliance is used to the Water freezes into ice piece.For this purpose, pallet is full of water and is placed in freezing room indoor.In this cooler environment in freezing cabin, water cools off lentamente and is frozen into ice cube.Water forms the required time of ice cube substantially above 30 minutes.
The another kind of method that is used to produce ice cube comprises water is stored in the container that the metal finger of initiatively being cooled off by means of cold-producing medium extend in the described container.Ice cube stems from the ice sheet that generates on water-immersed metal finger.This equipment by patent publication us WO 03/054458A1 as can be known.
Summary of the invention
The objective of the invention is to make ice cube by water in energy-conservation mode.
The method that this purpose utilization has the feature of claim 1 realizes.
The method of the present invention that is used for energy-conservation manufacturing ice cube has following steps at least:
Mould is full of water;
Utilize a refrigeration unit cooling water, wherein said refrigeration unit moves with the initial compression acc power by compressor;
Water begin freezing after the time reduce compressor horsepower.
Method step of the present invention means that comparing the less energy of needs with traditional method just can make ice cube.Water by one kilogram of quality carries out the energy that ice making need surpass 0.4kWh by the freezing room that water tray is placed in traditional household refrigerating appliance indoor (for example, according to patent publication us DE 102005003237A1).Water by one kilogram of quality carries out the ice making energy of 0.27KWh at least by generate ice sheet (for example, according to patent publication us WO 03/0504458A1) on freezing metal finger.
Better energy-conservation advantage of the present invention is especially utilized the equipment realization of initiatively making ice cube in household electrical appliance, and this equipment has at least one mould that is used to keep treating freezing water, and the inwall towards water of described mould is connected to a refrigeration unit.Opposite with prior art, utilize this equipment, heat be not by means of the cooling the metal finger disperseed but by means of the cooling mold wall disperseed.The equipment that is used for active ice making in household electrical appliance can comprise at least one water tray, storage water to be cooled in this water tray, and water tray has can be by directly contacting the wall that is cooled with at least one coolant channel.
The related fields of this equipment are in following explanation.Pallet is cooled by at least one coolant channel.Pallet can be the ice pallet with internal refrigerant pass at this, and wherein said internal refrigerant pass is determined by hole or mold shape.Yet it can also be a kind of like this pallet, and wherein said pallet has preferred smooth bottom, and described bottom is connected to smooth evaporimeter, for example roll bond plate in the mode of heat conduction.Yet it can also be a kind of like this entity pallet, and wherein said pallet has half-open U-shaped passage on downside, and the pipe of carrying cold-producing medium can be pressed in the described passage.This equipment can also have the intermediate tray wall, and wherein said intermediate tray wall is separated from one another with each ice cube.Coolant channel is positioned at the pallet below and is formed by the U-shaped pipe.In principle, midfeather can also be hollow and carry cold-producing medium, but because the high thermal conductivity of pallet this be not necessary.Pallet can be made of aluminum, but also can by unusual heat conduction, especially metal material is made, and also can use plastics.The bigger distance of high thermal conductivity between this permission water and coolant channel.Yet this equipment can also utilize the material with poor thermal conductivity to be made into, and in this case, a plurality of passages for example is set in midfeather advantageously, and wherein said passage preferably has complicated shape.This equipment can have ejector, thereby pallet can be mounted in a fixed manner, for example is mounted for reasons of safety.If flexible refrigerant lines is used, then pallet can be rotated, thereby need not ejector.The equipment that is used for initiatively ice making has been guaranteed high refrigerating capacity, efficiently utilizes energy and occupies little space simultaneously.
With cool off and compare by means of being immersed in finger in the water, aforesaid equipment has the bigger contact surface between cooling device and the water, thus heat is passed to mould better from water.Mould according to the present invention refers to any container that is used for water, and wherein said container maintenance will be frozen into the water of the specified quantitative of ice.Depend on the desired outer shape of ice cube, mould can differently be formed.Mould especially can be the form of pallet, for example one of hemispherical or disk section shape.At this, by means of the holder disc-shaped wall realization cooling of water receptacle.
In a schematic structure of this equipment, determined 100 gram water-cooleds are frozen into the required electric energy of ice.Except mould, promptly keep the pallet of water, equipment comprises electric refrigeration unit, and wherein said electric refrigeration unit has compressor, and the vaporizer side of described electric refrigeration unit is connected to mould or pallet.This equipment at first moves according to the method for standard.For the pallet that initiatively cools off, refrigerating process begins on tray surface, and promptly ice cube is freezing from outside to inside.With the maximum compression acc power, refrigerating process is beginning in about 3 minutes after water is introduced into.The initial temperature of water is 20 ℃.Need powerful electric compressor this freezing fast to realize.In schematic structure, used VEM Z 5C type compressor, it supplies 146 watts refrigeration work consumption with maximal rate 45 ℃ condensation temperature and at negative 20 ℃ evaporator temperature.The coefficient of performance COP of this refrigeration unit is 1.81 at its operating point.
COP, be the energy efficiency that the refrigeration work consumption and the ratio of the electrical power that is consumed have been explained system.Set a certain amount of technical equipment, this coefficient of performance is the function in the available cold of evaporimeter place supply and the rising of the temperature between the waste heat of condenser place release in principle.COP is high more, and then efficiency is just good more.3.6 or higher COP is for example corresponding to the A level efficiency at electric refrigerator.
In peak power, schematic structure spends about 15 minutes at complete cycle, so that 100 gram water-cooleds are frozen into ice, thaws then and releases ice cube.This consumes the electric energy of about 0.02 kilowatt hour (KWh).At 1 kilogram water, consume 0.2kWh/kg.Therefore, with known that water tray is installed in a freezing room with about 0.4kWh/kg is indoor and utilize the metal finger to cool off with about 0.27kWh/kg and compare, this schematic structure needs energy still less.
Yet assessment shows, in most of favourable situations, only needs approximately 0.15kWh/kg at this system; In other words, compare with the 0.2kWh/kg that determines and can further save 0.05kWh/kg, correspondingly conserve energy 25%.The energy of required in theory minimum can be calculated by the characteristic variable of schematic structure:
Material or mistake quality T BeginningT FinishThe specific heat heat
Journey
[g] [℃] [℃] [J/g] or [J/gK] Q[J] Q[Wh]
Aluminium pallet and 800 4-10 0.896 10,035 2.8
Evaporimeter
Water 100 20 0 4.18 8,360 2.3
Solidify 100 00 335.00 33,500 9.3
Supercool ices 100 0-10 2.10 2,100 0.6
The required in theory gross energy of water/ice at 100 grams: 15.0[Wh]
Therefore the efficient of refrigerating process be 0.15kWh/kg.
In theory, power consumption even can be lower is if can can't harm the lost territory and be introduced in mould, be in the aluminium pallet (aluminium dish) by having the refrigeration work consumption that compressor produced that is higher than 1 COP.Yet for practical structures, at least one fraction of refrigeration work consumption always is lost in the environment.
Yet, the energy of ice cube that is used for thawing, in other words with mould (aluminium pallet and evaporimeter) thus thaw and can discharge required energy in above-mentioned situation and reckon without from the negative 10 degrees centigrade temperature ice cubes that are heated above zero degrees celsius from mould.
Method of the present invention is based on knowledge as described below.Utilize and initiatively cool off pallet, refrigerating process begins on tray surface, and in other words, ice cube is freezing from outside to inside.With the maximum compression acc power, refrigerating process is beginning in about 3 minutes after water is introduced.The initial temperature of water is 20 ℃.Hindered step by step by formed ice sheet from solidifying anterior heat transfer to evaporator surface (mold wall).This is the lower thermal conductivity owing to ice on the one hand, and is because at constantly reducing owing to the thickness of the increase of ice sheet from the active surface of heat transfer water, the i.e. anterior surface of curing on the other hand.Therefore the evaporating temperature of cold-producing medium descends, and the available refrigeration work consumption of compressor, is that coefficient of performance COP reduces.After further 8 to 9 minutes, in other words,, freezing above 90% water 11 to 12 minutes circulation timei.In this time, evaporimeter is colder than bearing 15 degrees centigrade.Only after further 2 to 3 minutes, in other words 13 to 15 minutes cycle time, the remaining water of ice cube center was also freezing.Low-down temperature means that mould or aluminium pallet must be heated above zero degrees celsius from bearing 15 degrees centigrade, thereby subsequently ice cube is thawed.This process consumes about 2 to 3 additional minutes, especially because the limited power that hot gas thaws.Roughlly speaking, refrigerating process is expanded at the not any obvious degree of the energy consumption of remarkable minimizing ground.
Utilize method of the present invention, compressor horsepower reduces from freezing the beginning.This means mould, be that water receptacle or aluminium pallet are not cooled to unnecessary low temperature.Utilize this schematic structure, water begin freezing after the time reduce the temperature that compressor horsepower prevents mould or pallet and be lower than negative below 15 degrees centigrade.Verified, although reduce compressor horsepower, the process that water-cooled is frozen into ice can't significantly be postponed or be damaged.Simultaneously, when ice cube was thawed subsequently, mould or pallet only must be heated to more than the zero degrees celsius from lower temperature (approximately negative 12 degrees centigrade but not negative 22 degrees centigrade), thereby also need less energy with the heating or the ice cube that thaws.
Begin to reduce compressor horsepower at once after freezing at water.Compressor horsepower preferably can be with high, especially maximum initial compression acc power operation at least up to dissipating at the required heat that solidifies.Therefore, when reducing compressor horsepower at once after this, caused the energy-conservation of maximum.Yet,, also realize specific energy-conservation if compressor horsepower only is reduced after the specific time.This scope also according to the invention according to thinking of the present invention, reduces the embodiment that compressor horsepower is used to this little energy consumption.
Compressor horsepower can be reduced to the minimal compression acc power of the compressor of each employed refrigeration unit.In described embodiment (VEM Z 5C type compressor), the compressor horsepower of 146 watts of refrigeration work consumptions can be reduced to 74 watts, and this is at the condensation temperature of negative 15 degrees centigrade the evaporating temperature of 2.75COP and 35 degrees centigrade.The temperature difference that reduces has also been improved the COP of compressor.
Roughlly speaking, therefore compressor horsepower can be reduced to about 50% of initial compression acc power.It can be accurately to elect 50% as that compressor horsepower reduces, as long as continue to have guaranteed advantage of the present invention, in other words, especially be reduced to 40% and 60% between or even to reduce amplitude more.
Time when compressor horsepower is reduced can be used as the structure of the equipment of making ice cube function, especially determine that by experience method is set.For this purpose, utilize corresponding apparatus can carry out test, thereby determine that water begins the time when freezing.This time, time period of promptly beginning from the cycle according to the present invention can be provided with in the especially electric controller of the equipment of ice making piece then.
Yet, alternatively, also can produce a signal in the method, especially impel the electric controller of the equipment of ice making to reduce compressor horsepower.The beginning that reduces of compressor horsepower can be especially based on mould, be that the measurement of the temperature of pallet is determined or controlled, the water of waiting to be frozen into ice cube is set in described mould or pallet.Yet, can determine that other sensor that the curing of water begins also is feasible.
For example, compressor horsepower can be at mould, be that the measurement temperature of pallet is reduced when reaching predetermined design temperature.Be lower than negative 10 degrees centigrade, especially be lower than negative 12 degrees centigrade temperature and can especially be pre design temperature.
Mould or pallet also can utilize the compressor horsepower that reduces to be further cooled the freezing point of the water that is starkly lower than zero degrees celsius, are cooled to negative 15 degrees centigrade substantially.In order can when thawing ice cube, not heat too for a long time, in a remodeling of the present invention, propose when refrigerating process finishes, when required ice cube is made by water, compressor cut off the power supply, and before beginning heating mould or pallet are with the ice cube that thaws one time period of wait.
This method will be followed claim 1 method step required for protection and comprise following further step:
After ice cube is made by water, compressor is cut off the power supply;
Ice cube is stayed a holding time section in the mould;
After the holding time section finished, heating mould to be thawing ice cube, thereby helped ice cube to discharge from mould.
The holding time section can be between 1 and 3 minute, especially 2 minutes.
In stand-by period after compressor cuts off the power supply, promptly in the process of holding time section, mould or pallet are especially because the influence of environment temperature and for example automatically be heated to approximately negative 5 degrees centigrade.When approximately negative 15 degrees centigrade were heated to negative 5 degrees centigrade, refrigerating process continued apace at the center of ice cube at mould, thereby can for example compressor be cut off the power supply before a little in that ice cube is freezing fully.Because mould is no longer too cold when heating process begins, so thawing time is obviously shortened, promptly for example shortens about 1 minute.Equally, needs heat energy still less is so that thaw.Although compressor horsepower that reduces and compressor outage, total cycle time only is extended a little, for example extends to about 17 to 18 minutes from about 15 minutes.Circulating in this comprises introducing water, is frozen into ice cube, thaws and ejects final ice cube.
In a word, required energy is reduced to about 0.15kWh/kg from about 0.2kWh/kg, mean 25% energy-conservation.At significantly energy-conservation, only little production loss is must tolerance.Compare with about 9.6kg ice of every day before, approximately the ice of 8.0kg still can every day by output.Because the compressor horsepower that reduces and the more quiet operation that introducing caused of holding time section are favourable.Lower compressor and fan speed need, and the switching noise when thawing beginning is reduced.A side effect is to have less crack in the ice cube that is produced, and this is more progressive because discharge thawing of ice cube from mould.More progressive the thawing of the holding time before having seldom has stress influence for material; In other words, not have unexpected temperature to be increased to maximum heating power in order thawing from maximum refrigeration work consumption and to mean, especially evaporimeter with mould, be seldom to stand being connected between the aluminium pallet because the mechanical strain that material stress caused that temperature is introduced.
Description of drawings
The illustrative examples of the equipment of energy-conservation manufacturing ice cube has been described in following detailed explanation, in this equipment, the temperature curve of the schematic ice making cycle that utilizes this equipment has been described, thereby has shown the effect of the inventive method.Also will know other specific and advantage of the present invention by the detailed description of this concrete illustrative examples.In the accompanying drawings:
Fig. 1 shows the schematic diagram of claim 1 method required for protection;
Fig. 2 shows the schematic diagram of claim 9 method required for protection;
Fig. 3 shows the cutaway view according to the exemplary device of the energy-conservation manufacturing ice cube of a method of the present invention;
Fig. 4 shows the view of the time graph of temperature in the periodic process of the present invention.
The specific embodiment
Fig. 1 shows the method for claim 1 energy-conservation manufacturing ice cube required for protection.This method is first step S1 after beginning, and in described first step S1, mould is full of water.In the second step S2, water is cooled by means of a refrigeration unit, and wherein said refrigeration unit is operated with the initial compression acc power by compressor.This method finishes with third step S3, wherein said third step S3 water begin freezing after the time reduce compressor horsepower.Claim 1 method required for protection finishes after step S3.
Fig. 2 shows the method for claim 9 energy-conservation manufacturing ice cube required for protection.This method also is first step S1 after beginning, and in described first step S1, mould is full of water.In the second step S2, water is cooled by means of a refrigeration unit, and wherein said refrigeration unit is operated with the initial compression acc power by compressor; And in third step S3, compressor horsepower water begin freezing after the time be reduced.This third step S3 follows the 4th step S4 then, and in described the 4th step, compressor is de-energized after ice cube is by water generates.In the 5th step S5, ice cube is stayed a holding time section in the mould, and in the 6th step S6, mould is heated with the ice cube that thaws, thereby ice cube can be released more easily from mould, and this is to finish after the holding time section according to step S5 finishes.Finish after step S6 according to claim 9 method required for protection.
Fig. 3 shows the schematic cross sectional views of the mould 1 of making ice cube.The exemplary device of the energy-conservation manufacturing ice cube of a method can especially be provided with a plurality of this moulds 1 according to the present invention, and described this mould is mounted, especially can be combined into a construction unit with the mode of ice cube pallet space located adjacent one another with becoming order.Mould 1 for example is configured and is the aluminium pallet, and it has matrix made of aluminum 2 and is shaped as half inwall 3 of pallet.Adjacent inner wall 3 in ice sheet 4 mould that is shown in 1, described ice sheet 4 current formation also end near the water 5 of current still surplus amount.The front portion 6 of solidifying is on the border between the water 5 of ice sheet 4 and this amount.Hot-fluid as shown in arrow 7 flow to evaporator plate 8 from the water 5 of this amount, and wherein said evaporator plate is connected to a refrigeration unit (not shown).Heat from the water 5 of this amount is dispersed in the evaporator plate 8 along hot-fluid (arrow 7), thereby when continuing cooling, the water 5 that the front portion 6 of curing continues upwards to grow until all amounts in Fig. 3 has cured into ice.
Fig. 4 shows at the view according to equipment embodiment of temperature time curve in the cycle of the present invention of Fig. 3.Temperature time curve is to be provided with at 100 water that restrain.Be that temperature line has embodied the temperature curve in the water on main two in the zone of positive temperature.Embodied at the temperature curve shown in the last right side and not utilized method of the present invention, promptly do not utilize temperature curve in the whole time for the treatment of freezing water that compressor horsepower reduces.Below and some local overlapping be the temperature curve that utilizes in whole time for the treatment of freezing water of method of the present invention.Water temperature is determined in the centre of water, in other words is determined in the place of freezing last appearance.Two temperature curves of this of water were located at 0 minute all to begin with about 20 to 21 degrees centigrade temperature.In the some minutes after this, these two temperature curves show characteristic much at one significantly.These two temperature curves are only differentiation in about 11.5 minutes.At being reduced to zero degrees celsius under the temperature curve that continues the maximum compression acc power at this point, in other words, ice cube was freezed fully in this time.Because reduce compressor horsepower according to the present invention, reduce approximately 50% at this, only temperature curve just reduces and is lower than the zero degrees celsius limit in the time of about 13.5 minutes, in other words ice cube freezes fully at the point that this lags behind a little.This curve shows the manufacture process of ice cube and has confirmed to utilize the method for the present invention that reduces compressor horsepower, and the ice cube that freezes is fully only produced a little with lagging behind.Delay only is about 2 minutes in about 15 to 17 minutes whole manufacturing time sections.
In Fig. 4, be that two main following temperature line have shown in the mould, have been the temperature time curve in the aluminium pallet in the negative temperature zone.At first, utilize and do not utilize two temperature curves that reduce compressor horsepower of the present invention at mould in about 12 to 13 degrees centigrade of beginnings.Introduce water with about 20 to 21 degrees centigrade and caused mold temperature temporarily to rise to about 15 to 16 degrees centigrade at first, after this, mold temperature descends until 6.5 minutes apace owing to the maximum compression acc power in two temperature curves.From 6.5 minutes, the basic difference between prior art and the method for the present invention has been shown in two temperature curves.Although according to prior art cooling even proceeded with the full compression acc power after 6.5 minutes, according to the present invention, compressor horsepower was reduced in this time, reduced about 50% in this illustrative examples.This result who causes is that in the time period between 12 minutes and 13 minutes, the temperature of mould is not reduced to approximately negative 20 degree centigrade value, but only stablizes at approximately negative 10 degrees centigrade.Area between the temperature curve of maximum compression acc power and the compressor horsepower that reduces has embodied energy-conservation ratio.In temperature curve, because the outage fully of compressor located to have occurred bending at about 13 minutes at the maximum compression acc power.In the temperature curve at the compressor horsepower that reduces, compressor outage of the present invention was occurring between 13.5 minutes and 15.5 minutes before the mold heated.

Claims (10)

1. method of making ice cube may further comprise the steps:
Mould is full of water (S1);
Utilize a refrigeration unit to cool off described water (S2), wherein said refrigeration unit is operated with the initial compression acc power via a compressor;
Described water begin freezing after the time reduce described compressor horsepower (S3).
2. method according to claim 1 is characterized in that, described compressor horsepower begins to be reduced at once after freezing at water.
3. method according to claim 1 and 2 is characterized in that, described compressor horsepower is decreased to the minimal compression acc power of the compressor of each employed refrigeration unit.
4. according to the arbitrary described method of claim 1 to 3, it is characterized in that described compressor horsepower is reduced to about 50% of initial compression acc power.
5. according to the arbitrary described method of claim 1 to 4, it is characterized in that the time when described compressor horsepower is reduced is according to the structure of the equipment of making ice cube, especially determine that by experience method is set.
6. according to the arbitrary described method of claim 1 to 4, it is characterized in that, determine based on the measurement of the temperature of mould or beginning that the control compressor horsepower reduces.
7. method according to claim 6 is characterized in that, when the temperature of the measurement of mould reached predetermined design temperature, described compressor horsepower was reduced.
8. method according to claim 7 is characterized in that, is lower than negative 10 degrees centigrade, especially is lower than negative 12 degrees centigrade temperature and is pre described design temperature.
9. according to the arbitrary described method of claim 1 to 8, it is characterized in that, further comprising the steps of:
After ice cube is made by water with described compressor outage (S4);
Described ice cube is stayed a holding time section (S5) in the described mould;
After described holding time section finished, with described mold heated (S6), so that described ice cube thaws, thereby described ice cube can be released more easily from described mould.
10. method according to claim 9 is characterized in that, described holding time section be between 1 and 3 minute, especially 2 minutes.
CN2009801095561A 2008-03-19 2009-03-13 Method for manufacturing ice pieces Pending CN101978231A (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE102008014887.3 2008-03-19
DE102008014887A DE102008014887A1 (en) 2008-03-19 2008-03-19 Process for the production of ice pieces
PCT/EP2009/052957 WO2009115454A1 (en) 2008-03-19 2009-03-13 Method for manufacturing ice pieces

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Publication Number Publication Date
CN101978231A true CN101978231A (en) 2011-02-16

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CN2009801095561A Pending CN101978231A (en) 2008-03-19 2009-03-13 Method for manufacturing ice pieces

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US (1) US20110011103A1 (en)
EP (1) EP2265870A1 (en)
CN (1) CN101978231A (en)
DE (1) DE102008014887A1 (en)
RU (1) RU2010139990A (en)
WO (1) WO2009115454A1 (en)

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CN111964322B (en) * 2020-08-17 2022-03-04 创历电器(滁州)股份有限公司 Deicing method

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DE102008014887A1 (en) 2009-09-24
US20110011103A1 (en) 2011-01-20
WO2009115454A1 (en) 2009-09-24
EP2265870A1 (en) 2010-12-29

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Application publication date: 20110216