US20080276629A1 - Method and apparatus for producing salt water-mixed sherbet ice - Google Patents

Method and apparatus for producing salt water-mixed sherbet ice Download PDF

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Publication number
US20080276629A1
US20080276629A1 US12/149,794 US14979408A US2008276629A1 US 20080276629 A1 US20080276629 A1 US 20080276629A1 US 14979408 A US14979408 A US 14979408A US 2008276629 A1 US2008276629 A1 US 2008276629A1
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Prior art keywords
ice
salt water
water
mixed sherbet
sherbet ice
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US12/149,794
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English (en)
Inventor
Hiroshi Yamamoto
Hiroyuki Hamashita
Shinichi Hattori
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Mitsubishi Electric Corp
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Mitsubishi Electric Corp
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Assigned to MITSUBISHI ELECTRIC CORPORATION reassignment MITSUBISHI ELECTRIC CORPORATION ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: HAMASHITA, HIROYUKI, HATTORI, SHINICHI, YAMAMOTO, HIROSHI
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    • 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
    • F25C1/00—Producing ice
    • F25C1/12—Producing ice by freezing water on cooled surfaces, e.g. to form slabs
    • F25C1/14—Producing ice by freezing water on cooled surfaces, e.g. to form slabs to form thin sheets which are removed by scraping or wedging, e.g. in the form of flakes
    • F25C1/145—Producing ice by freezing water on cooled surfaces, e.g. to form slabs to form thin sheets which are removed by scraping or wedging, e.g. in the form of flakes from the inner walls of cooled bodies
    • 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

Definitions

  • the present invention relates to a method and apparatus for producing salt water-mixed sherbet ice, in which ice generated by cooling so-called salt water such as sea water supplied is scraped as small particles of ice by a scraper to thereby produce salt water-mixed sherbet ice having the small particles of ice mixed with the salt water.
  • Sea fishes were heretofore generally cooled with blocks of ice to keep freshness of the sea fishes.
  • the sea fishes might be damaged by the blocks of ice because of vibration during marine and land transportation when the blocks of ice were ordinary blocks of ice or the freshness of the sea fishes might be lost by water generated by melting the blocks of ice.
  • the temperature of salt water-mixed sherbet ice for keeping the freshness and taste of sea fishes varies according to the kind of fish when the sea fishes are cooled with the salt water-mixed sherbet ice.
  • a bad influence such as freezing of fish meat or clouding of fish eyes may occur according to the kind and size of fish.
  • salt water-mixed sherbet ice with an ice concentration (percent by weight of small particles of ice to the salt water-mixed sherbet ice, also called ice packing factor (IPF)) of 30% is produced from general sea water (with a salt concentration of about 3.5%)
  • IPF ice packing factor
  • the temperature of the salt water-mixed sherbet ice is ⁇ 3.1° C.
  • the salt water-mixed sherbet ice at this temperature is used for cooling fishes, fish meat of almost fishes is however frozen so that the commercial value thereof is lost. It is therefore necessary to adjust the salt concentration in order to provide salt water-mixed sherbet ice at such a temperature that fish meat is not frozen.
  • Patent Document 1 JP-A-2002-115945 (FIG. 1 and paragraph number 0035)
  • Patent Document 2 JP-A-2006-10129 (FIGS. 1 to 3 and description thereof)
  • sea water with a low salt concentration e.g. of 1.5%
  • a relatively high temperature e.g. of ⁇ 1.5° C.
  • salt water-mixed sherbet ice at a relatively high temperature e.g. of ⁇ 1.5° C.
  • Patent Document 2 has described that ocean deep water (sea water 200 m or more below sea level) is used for performing supercooling and canceling of supercooling, it is difficult to produce salt water-mixed sherbet ice stably by such a method for performing supercooling and canceling of supercooling. It is therefore preferable that salt water-mixed sherbet ice at a relatively high temperature (e.g. of ⁇ 1.5° C.) can be produced without use of such a method and with use of unexceptional sea water or easily available salt water.
  • a relatively high temperature e.g. of ⁇ 1.5° C.
  • an object of the present invention is to provide a method and apparatus for producing salt water-mixed sherbet ice at a relatively high temperature (e.g. of ⁇ 1.5° C.) easily.
  • the present invention provides a method of producing salt water-mixed sherbet ice, including the steps of: generating salt water-mixed sherbet ice by cooling salt water fed to an ice-maker to generate ice, scraping the ice by scrapers to form small particles of ice to thereby mix the small particles of ice with the salt water; feeding the salt water-mixed sherbet ice from the ice-maker into an ice storage tank to thereby store the salt water-mixed sherbet ice in the ice storage tank; and storing a predetermined amount of the salt water-mixed sherbet ice with a predetermined sherbet concentration at a predetermined low temperature in the ice storage tank while the salt water-mixed sherbet ice stored in the ice storage tank is refluxed from the ice storage tank to the ice-maker repeatedly a plurality of times; wherein water is injected into the salt water-mixed sherbet ice in the process of producing salt water
  • This invention also provides an apparatus of producing salt water-mixed sherbet ice, including: an ice-maker which generates salt water-mixed sherbet ice under control based on a controller in such a manner that ice generated by cooling salt water fed to the ice-maker is scraped by scrapers to form small particles of ice to thereby mix the small particles of ice with the salt water; an ice storage tank which stores the salt water-mixed sherbet ice fed from the ice-maker under control based on the controller; and a water injecting unit which injects water into the salt water-mixed sherbet ice; wherein control is performed by the controller so that the salt water-mixed sherbet ice stored in the ice storage tank is refluxed from the ice storage tank to the ice-maker and the injection of water is performed by the water injecting unit in steps of feeding the salt water-mixed sherbet ice from the ice-maker to the ice storage tank and refluxing the salt
  • FIG. 1 is a diagram showing Embodiment 1 of this invention and showing an example of overall system configuration of a salt water-mixed sherbet ice producing apparatus for carrying out a salt water-mixed sherbet ice producing method;
  • FIG. 2 is a flow chart showing Embodiment 1 of this invention and showing an example of a salt water-mixed sherbet ice producing sequence in the salt water-mixed sherbet ice producing method and the salt water-mixed sherbet ice producing apparatus shown in FIG. 1 ;
  • FIG. 3 is a graph showing Embodiment 1 of this invention and showing the relation between salt concentration and freezing point due to the action of freezing-point depression;
  • FIG. 4 is a graph showing Embodiment 1 of this invention and showing ice-making curves at salt concentrations of 1.0% to 4.5% taken at intervals of 0.5%;
  • FIG. 5 is a graph showing Embodiment 1 of this invention and showing an example of salt water state and ice-making curve in the case where salt water-mixed sherbet ice is produced in the condition of an initial salt water concentration of 2.5%, a target salt water-mixed sherbet ice temperature of ⁇ 1.5° C. and a target ice concentration (IPF) of 25% by the salt water-mixed sherbet ice producing method and the salt water-mixed sherbet ice producing apparatus shown in FIG. 1 ;
  • IPF target ice concentration
  • FIG. 6 is a diagram showing Embodiment 2 of this invention and showing another example of overall system configuration of the salt water-mixed sherbet ice producing apparatus for carrying out the salt water-mixed sherbet ice producing method;
  • FIG. 7 is a flow chart showing Embodiment 2 of this invention and showing an example of a salt water-mixed sherbet ice producing sequence in the salt water-mixed sherbet ice producing method and the salt water-mixed sherbet ice producing apparatus shown in FIG. 6 ;
  • FIG. 8 is a graph showing Embodiment 2 of this invention and showing an example of salt water state and ice-making curve in the salt water-mixed sherbet ice producing method and the salt water-mixed sherbet ice producing apparatus shown in FIG. 6 ;
  • FIG. 9 is a flow chart showing Embodiment 3 of this invention and showing a further example of a salt water-mixed sherbet ice producing sequence in the salt water-mixed sherbet ice producing method and the salt water-mixed sherbet ice producing apparatus;
  • FIG. 10 is a graph showing Embodiment 3 of this invention and showing an example of salt water state and ice-making curve in the salt water-mixed sherbet ice producing method and the salt water-mixed sherbet ice producing sequence shown in FIG. 9 ;
  • FIG. 1 is a diagram showing an example of overall system configuration of a salt water-mixed sherbet ice producing apparatus for carrying out a salt water-mixed sherbet ice producing method.
  • FIG. 2 is a flow chart showing an example of a salt water-mixed sherbet ice producing sequence in the salt water-mixed sherbet ice producing method and the salt water-mixed sherbet ice producing apparatus shown in FIG. 1 .
  • FIG. 3 is a graph showing the relation between salt concentration and freezing point due to the action of freezing point depression.
  • FIG. 4 is a graph showing ice-making curves at salt concentrations of 1.0% to 4.5% taken at intervals of 0.5%.
  • FIG. 5 is a graph showing an example of salt water state and ice-making curve in the case where salt water-mixed sherbet ice is produced in the condition of an initial salt concentration of 2.5%, a target salt water-mixed sherbet ice temperature of ⁇ 1.5° C. and a target ice concentration (IPF) of 25% by the salt water-mixed sherbet ice producing method and the salt water-mixed sherbet ice producing apparatus shown in FIG. 1 .
  • IPF target ice concentration
  • the salt water-mixed sherbet ice producing apparatus has: an ice-maker (also called ice generator) 1 ; a drive source (a motor for driving a rotary cylinder 1 f (which will be described later) in this Embodiment 1) 2 for the ice-maker 1 ; an ice-maker load detection sensor (a current sensor, an ammeter, etc.) 3 for detecting the load state of the ice-maker 1 ; a refrigerator 4 ; a compressor 5 ; a condenser 6 ; a cooling medium piping 7 ; an expansion valve 8 ; a pressure sensor 9 ; a temperature sensor 10 Ts; a main circulating pump 11 ; a pump controller 11 a such as an inverter, etc.; a reflux path piping (ice-maker 1 ⁇ ice storage tank 14 (salt water or salt water-mixed sherbet ice 143 is fed from the ice storage tank 14 to the ice-maker 1 by the main circulating pump 11 )))
  • salt water-mixed sherbet ice a salt water-mixed sherbet ice discharging path 141 ; a drain path 142 ; a salt water-mixed sherbet ice discharging path switching valve 14 a ; a drain path switching valve 14 b ; a salt water-mixed sherbet ice storage level sensor 14 c Ls for detecting the storage level of salt water-mixed sherbet ice in the ice storage tank 14 ; a stirrer (also called agitator) 16 driven by a drive source (e.g.
  • a drive source e.g.
  • a motor 15 15 ; a first valve 19 for the ice storage tank 14 ; a second valve 21 for the ice storage tank 14 ; a salt concentration adjusting tank 22 ; a salt water injection pipe 231 for injecting salt water 23 such as sea water from a salt water source (not shown) into the ice storage tank 14 ; a fresh water injection pipe 241 for injecting fresh water 24 from a fresh water source (not shown) into the ice storage tank 14 ; a fresh water amount adjusting valve 25 for controlling the amount of fresh water 24 injected into the ice storage tank 14 ; a salt concentration sensor 26 cl for detecting the salt concentration C of salt water-mixed sherbet ice 143 in the ice storage tank 14 ; a cold salt water feed control valve 28 for controlling the amount of cold salt water injected into the ice storage tank 14 ; and a controller 100 provided with a setting portion 110 .
  • the ice-maker 1 has: a cooling medium side passage 1 a provided with an evaporator function; a salt water side passage 1 b ; scrapers (also called scraping machines or scraping blades) 1 c ; an outer cylinder 1 d ; an inner cylinder 1 e ; and the rotary cylinder 1 f .
  • the cooling medium side passage 1 a is formed between the outer cylinder 1 d and the inner cylinder 1 e so that the cooling medium side passage 1 a is shaped like a cylinder.
  • the salt water side passage 1 b is formed between the rotary cylinder 1 f and the inner cylinder 1 e so that the salt water side passage 1 b is shaped like a cylinder.
  • the scrapers 1 c are attached to an outer circumference of the rotary cylinder 1 f at regular intervals both in a circumferential direction and in a direction of extension of a center line so that the scrapers 1 c are disposed in the salt water side passage 1 b.
  • the salt water-mixed sherbet ice discharging path switching valve 14 a for opening and closing the salt water-mixed sherbet ice discharging path 141 is provided in the salt water-mixed sherbet ice discharging path 141 provided in a side wall of the ice storage tank 14 near the bottom of the ice storage tank 14 .
  • the drain path switching valve 14 b for opening and closing the drain path 142 is provided in the drain path 142 provided in the bottom of the ice storage tank 14 .
  • the salt water-mixed sherbet ice storage level sensor 14 c Ls for detecting the storage level of salt water-mixed sherbet ice 143 in the ice storage tank 14 is provided in the ice storage tank 14 .
  • the controller 100 receives detection outputs of the respective sensors 3 , 9 , 10 Ts, 12 Tw, 14 c Ls and 26 cl and controls the respective drive sources 2 and 15 , the refrigerator 4 , the respective valves 8 , 14 a , 14 b , 19 , 21 and 28 and the pump controller 11 a to execute the salt water-mixed sherbet ice producing sequence in the salt water-mixed sherbet ice producing method and the salt water-mixed sherbet ice producing apparatus shown in FIGS. 2 , 5 and 7 which will be described later.
  • the setting portion 110 in the controller 100 sets a target point, etc. which will be described later.
  • a salt water feed unit is formed from the salt water source (not shown), the salt water injection pipe 231 and the cold salt water feed control valve 28 .
  • a fresh water feed unit is formed from the fresh water source (not shown), the fresh water injection pipe 241 and the fresh water amount adjusting valve 25 .
  • salt water in the salt water source for example, with a salt concentration of 2.5%, 3%, 3.5%, etc. selected by a user is injected into the ice storage tank 14 through the cold salt water feed control valve 28 so as to be stored in the ice storage tank 14 .
  • the salt water stored in the ice storage tank 14 is thrown into the salt water side passage 1 b of the ice-maker (ice generator) 1 by the circulating pump 11 .
  • a cooling medium liquid at about ⁇ 12° C. fed from the refrigerator 4 flows in the cooling medium side passage 1 a of the ice-maker 1 .
  • the salt water having the predetermined salt concentration and the predetermined temperature flows in the salt water side passage 1 b of the ice-maker 1 and comes into contact with an inner circumferential surface (heat transmission surface) of the inner cylinder 1 e of the ice-maker 1 , so that the salt water in contact with the inner circumferential surface of the inner cylinder 1 e is cooled with the cooling medium in the cooling medium side passage 1 a . In this manner, ice is generated on the inner circumferential surface of the inner cylinder 1 e.
  • the ice generated on the inner circumferential surface of the inner cylinder 1 e is scraped by the scrapers (scraping blades) 1 c on the outer circumference of the rotary cylinder 1 f which are driven to rotate by the ice-maker drive source (rotary cylinder drive motor) 2 .
  • the ice scraped by the scrapers 1 c is provided as particles with a size of about 0.1 mm.
  • the ice particles float in the salt water in the salt water side passage 1 b of the ice-maker 1 so as to be shaped like sherbet containing salt water. That is, salt water-mixed sherbet ice is generated.
  • the salt water-mixed sherbet ice generated in the salt water side passage 1 b of the ice-maker 1 is extruded from the salt water side passage 1 b by the circulating pump 11 so as to be fed into the ice storage tank 14 via the flux path piping 13 .
  • the salt water-mixed sherbet ice is stored in the ice storage tank 14 .
  • the salt water-mixed sherbet ice 143 stored in the ice storage tank 14 is refluxed into the salt water side passage 1 b of the ice-maker 1 via the reflux path piping 12 by the circulating pump 11 .
  • ice is generated on the inner circumferential surface of the inner cylinder 1 e in the same manner as described above.
  • the ice is scraped by the scrapers 1 c , so that salt water-mixed sherbet ice containing a large amount of ice particles is generated in the salt water side passage 1 b.
  • the salt water-mixed sherbet ice containing such an increasing amount of ice particles is further extruded from the salt water side passage 1 b by the circulating pump 11 in the same manner as described above.
  • the salt water-mixed sherbet ice is fed into the ice storage tank 14 via the flux path piping 13 , so that the salt water-mixed sherbet ice is stored in the ice storage tank 14 .
  • the flux and reflex cycle including reflux of salt water-mixed sherbet ice from the ice storage tank 14 into the salt water side passage 1 b , generation of salt water-mixed sherbet ice containing a large amount of ice particles in the salt water side passage 1 b and flux of the salt water-mixed sherbet ice containing a large amount of ice particles from the salt water side passage 1 b into the ice storage tank 14 is repeated many times so that a predetermined amount of salt water-mixed sherbet ice 143 with a predetermined sherbet concentration IPF is stored in the ice storage tank 14 .
  • the flux and reflux cycle is repeated for about 10 hours to thereby gradually generate the salt water-mixed sherbet ice 143 . Accordingly, since a large amount of ice cannot be generated in the salt water side passage 1 b of the ice-maker 1 in a short time, the locked state in which the ice-maker cannot operate (the rotary cylinder 1 f cannot rotate) is almost prevented from being caused by aggregation due to solidification of sherbet ice, compared with the method and apparatus according to the background art.
  • the sherbet concentration of salt water-mixed sherbet ice increases gradually and the viscosity thereof increases gradually.
  • the gradual increase in the sherbet concentration of salt water-mixed sherbet ice and in the viscosity thereof means that the ice-maker 1 gets close to a state in which the ice-maker 1 is overloaded and to a state in which the ice-maker 1 is locked. Accordingly, although the locked state can be almost prevented in Embodiment 1 of the invention as described above, it is necessary to take measures to prevent the locked state, for example, even when sudden drop in the ambient temperature due to sudden change in the weather, repetition of momentary power failure, etc. occurred, so that a more reliable salt water-mixed sherbet ice producing method and apparatus can be achieved.
  • the sherbet concentration of salt water-mixed sherbet ice becomes too high, for example, when the sherbet concentration exceeds 50% and becomes a considerably high value of 60%, 70% or 80%, the viscosity of the salt water-mixed sherbet ice 143 becomes so high that not only does forced circulation of the salt water-mixed sherbet ice into the salt water side passage 1 b of the ice-maker 1 by the circulating pump 11 become difficult but also the drive source (rotary cylinder drive motor) 2 of the ice-maker becomes high-loaded and overloaded successively and stops finally.
  • the drive source rotary cylinder drive motor
  • the controller 100 stops the refrigerator 4 to stop ice-making so that sherbet ice cannot be produced any more.
  • the judgment in the controller 100 as to whether the proper sherbet concentration is obtained is, for example, based on the temperature of salt water-mixed sherbet ice measured by the temperature sensor 10 Ts. That is, when the temperature of salt water-mixed sherbet ice reaches a specified temperature, the refrigerator 4 is stopped.
  • the proper ice concentration IPF is detected based on the temperature of salt water-mixed sherbet ice corresponding to the salt concentration, so that the operation of the refrigerator 4 is stopped in accordance with detection of the proper ice concentration IPF of salt water-mixed sherbet ice.
  • the temperature of salt water-mixed sherbet ice is monitored to control the operation of the refrigerator 4 so that overloading and stopping of the ice-maker 1 can be prevented from being caused by excess of the sherbet concentration.
  • the specified temperature depends on the salt concentration of sea water.
  • the specified temperature is ⁇ 3.1° C. for a salt concentration of 3.5%, and ⁇ 2.1° C. for a salt concentration of 2.5%.
  • ⁇ 3.1° C. is lower than ⁇ 2.1° C.
  • the salt concentration of sea water varies according to environment. For example, the salt concentration becomes low just after a heavy rain or near a river estuary. Accordingly, when the salt concentration is lowered, it is necessary to increase the specified temperature in accordance with a value detected by the salt concentration sensor 26 cl and stop the refrigerator 4 quickly after the sherbet concentration reaches a proper concentration.
  • the theory and practice are not always consistent with each other even when the specified temperature is increased because the salt concentration is lowered.
  • salt water-mixed sherbet ice with a higher sherbet concentration than the theoretically estimated value thereof is generated so that the viscosity of the salt water-mixed sherbet ice becomes high. Accordingly, not only does forced circulation of the salt water-mixed sherbet ice into the salt water side passage 1 b of the ice-maker 1 by the circulating pump 11 become difficult, but also the ice-maker drive source (rotary cylinder drive motor) 2 may be stopped because of high load.
  • the controller 100 controls the pump controller (inverter) 11 a automatically, in accordance with the output of the ice-maker load detection sensor (current sensor) 3 detecting the load state of the drive source 2 driving the rotary cylinder 1 f of the ice-maker 1 , to increase the output of the circulating pump 11 , increase the discharging pressure of the circulating pump 11 and forcedly extrude salt water-mixed sherbet ice from the salt water side passage 1 b to the flux path piping 13 at the initial stage of solidification of sherbet ice to thereby present the ice-maker 1 from lapsing into the overload state or the locked state.
  • the circulating pump 11 is controlled automatically by the controller 100 .
  • the salt water feed control valve 28 is closed by the controller 100 .
  • the temperature of a mixture of sherbet ice and salt water in the salt water side passage 1 b is normally ⁇ 1.9° C., for example, for a salt concentration of 2.5%. The temperature reaches about ⁇ 2.7° C. for a salt concentration of 3.5%.
  • Embodiment 1 of the invention in addition to the automatic control of the output of the circulating pump 11 based on the output of the ice-maker load detection sensor 3 , the output of the temperature sensor 10 Ts is used so that automatic control is performed by the controller in such a manner that ice-making is continued until the ice concentration IPF of the salt water-mixed sherbet ice reaches the target value, for example, until the ice concentration IPF reaches 35% when the target ice concentration IPF is 25%; the fresh water amount adjusting valve 25 is opened to feed fresh water 24 from the fresh water injection pipe 241 into the ice storage tank 14 when the temperature detected by the temperature sensor 10 Ts reaches ⁇ 2.3° C.
  • salt water-mixed sherbet ice at a relatively high temperature e.g. of ⁇ 1.5° C.
  • the temperature at which ice generation starts is ⁇ 1.5° C.
  • ice is generated as it is, and the temperature at which the ice concentration IPF reaches 30% is ⁇ 2.1° C.
  • the salt water-mixed sherbet ice at ⁇ 2.1° C. cannot be applied to cooling of some kind of fish because fish meat may be frozen when the salt water-mixed sherbet ice is applied to cooling of fish.
  • the output of the temperature sensor 10 Ts is used so that automatic control is performed by the controller in such a manner that ice-making is continued until the temperature of the salt water-mixed sherbet ice becomes the target value or higher; the fresh water amount adjusting valve 25 is opened to feed fresh water 24 from the fresh water injection pipe 241 into the ice storage tank 14 when the temperature of the salt water-mixed sherbet ice reaches, for example, ⁇ 2.3° C.; and the fresh water amount adjusting valve 25 is closed to stop the feed of fresh water 24 into the ice storage tank 14 when the detected temperature of the temperature sensor 10 Ts reaches the target value, for example, ⁇ 1.5° C.
  • salt water-mixed sherbet ice at a relatively high temperature e.g. of ⁇ 1.5° C.
  • the operation sequence in the controller 100 which is a process of producing salt water-mixed sherbet ice based on ice-making and injection of fresh water will be described below with reference to FIG. 2 .
  • the finished temperature (target temperature) Ts 2 and finished IPF (target IPF (ice concentration)) of salt water-mixed sherbet ice are set in the setting portion 110 of the controller 100 (step ST 201 ).
  • salt water is injected from the salt water injection pipe 231 into the ice storage tank 14 . Further, the salt concentration C of salt water in the ice storage tank 14 is measured by the salt concentration sensor 26 cl and the level (water level) of salt water in the ice storage tank 14 is measured by the salt water-mixed sherbet ice storage level sensor 14 c Ls (step ST 202 ).
  • the ice-making completion temperature Ts 1 is set in the setting portion 110 of the controller 100 (step ST 203 ).
  • step ST 204 the first and second valves 19 and 21 are opened, the main circulating pump 11 is operated and the ice-maker 1 and the refrigerator 4 are operated to perform ice-making.
  • step ST 205 whether or not the temperature Ts of salt water-mixed sherbet ice which is the output of the temperature sensor 10 Ts has reached the ice-making completion temperature Ts 1 (the set value of which is, for example, about ⁇ 2.2° C. when the salt concentration C is 2.5%) is judged based on measurement information of the temperature Ts (step ST 205 ).
  • step ST 206 when a result of the judgment in the step ST 205 shows YES (the temperature Ts has reached the ice-making completion temperature Ts 1 ), ice-making is stopped (step ST 206 ).
  • the steps ST 201 to ST 206 are an operation sequence for settings in a standard ice-making function portion 101 of the controller 100 .
  • This operation sequence is the same as the operation sequence in steps of the salt water-mixed sherbet ice producing method according to the background art, except the setting of the finished temperature (target temperature) Ts 2 of salt water-mixed sherbet ice.
  • the steps ST 201 to ST 206 salt water-mixed sherbet ice at a low temperature is generated.
  • the fresh water amount adjusting valve 25 is opened so that fresh water 24 is injected from the fresh water injection pipe 241 into the ice storage tank 14 (step ST 207 ).
  • step S 208 whether or not the temperature Ts of salt water-mixed sherbet ice which is the output of the temperature sensor 10 Ts has reached the finished temperature Ts 2 (the set value of which is, for example, ⁇ 1.5° C. when the salt concentration C is. 2.5%) is judged based on measurement information of the temperature Ts (step S 208 ).
  • step ST 208 when a result of the judgment in the step ST 208 shows YES (the temperature Ts has reached the finished temperature Ts 2 ), the fresh water amount adjusting valve 25 is closed to stop injection of fresh water 24 (step S 209 ).
  • step ST 209 salt water-mixed sherbet ice at a relatively high temperature, for example, of ⁇ 1.5° C. as the target value and with an IPF of 25% is finished.
  • the finished salt water-mixed sherbet ice at a relatively high temperature in the ice storage tank 14 is then discharged from the salt water-mixed sherbet ice discharging path 141 automatically or optionally (step ST 210 ).
  • the steps ST 207 to ST 209 are an operation sequence in a fresh water injecting function portion 102 of the controller 100 .
  • steps ST 207 to ST 209 salt water-mixed sherbet ice at a required relatively high temperature can be produced easily.
  • the injection of fresh water is performed while the salt water-mixed sherbet ice in the ice storage tank 14 is stirred by the stirrer 16 so that the temperature and IPF of the salt water-mixed sherbet ice are uniformized in the whole region in the ice storage tank 14 .
  • salt water-mixed sherbet ice at a high temperature can be produced when water is mixed with salt water such as sea water as described above will be described below.
  • a salt water NaCl solution is not frozen at 0° C. which is the freezing point of fresh water, but frozen at a point lower than 0° C. because of the action of freezing point depression.
  • FIG. 3 shows the relation between salt concentration and freezing point due to the action of freezing point depression.
  • the cold heat quantity of salt water-mixed sherbet ice is defined as follows.
  • the cold heat quantity can be expressed in specific enthalpy [kcal/kg] of salt water-mixed sherbet ice as follows:
  • h [kcal/kg] is the specific enthalpy of salt water-mixed sherbet ice
  • c is specific heat
  • T is the temperature of salt water-mixed sherbet ice
  • Ipf is the temperature of ice
  • L is latent heat of solidification of water.
  • the subscript w is designated as water and the subscript i is designated as ice.
  • FIG. 4 shows states in salt concentrations of 1.0% to 4.5% taken at intervals of 0.5%.
  • the abscissa axis shows enthalpy of salt water-mixed sherbet ice and the ordinate axis shows temperature.
  • IPF % shows ice concentration.
  • salt water with a salt concentration of 3.5% when cooled from 0° C., it is cooled linearly.
  • the temperature reaches ⁇ 2.1° C.
  • salt water begins to be frozen and the temperature thereof decreases while the amount of ice increases.
  • the ice concentration IPF of salt water-mixed sherbet ice is 30%, the temperature reaches ⁇ 3.1° C. and the specific enthalpy reaches about ⁇ 26 kcal/kg.
  • a state in the case where fresh water is added to the salt water-mixed sherbet ice will be considered.
  • fresh water at a temperature of 0° C. or higher is added, the temperature of the salt water-mixed sherbet ice increases and the salt concentration of the salt water-mixed sherbet ice decreases because the temperature of the salt water-mixed sherbet ice is 0° C. or lower.
  • a solution of ice mixed with salt water such as salt water-mixed ice water or sherbet ice, has the property that the salt concentration thereof balances with the freezing point.
  • the temperature of the salt water-mixed sherbet ice increases through the locus as shown in FIG. 4 .
  • FIG. 4 shows states in the case where three kinds of fresh water at 0° C., 5° C. and 10° C. are injected into salt water-mixed sherbet ice in the condition that the amounts (weight ratios) of the added freshwater to the salt water-mixed sherbet ice are 5%, 10%, 20%, . . . , 100%.
  • FIG. 5 is a graph showing another example of ice-making curves in the case where the salt water-mixed sherbet ice is produced from salt water having a salt concentration of 2.5% by the steps ST 204 to ST 209 in the condition that the target point of finished salt water-mixed sherbet ice is ⁇ 1.5° C. with an IPF of 25%.
  • ice-maker 1 in Embodiment 1 can generate ice only when the initial salt concentration is 2.5% or higher as described above, a 2.5% line as a reference is shown in FIG. 5 .
  • the predetermined value the temperature of salt water-mixed sherbet ice reaches ⁇ 2.2° C.
  • salt water-mixed sherbet ice at a relatively high temperature as the target point of the target temperature (of ⁇ 1.5° C. in FIG. 5 ) and the target IPF (of 25% in FIG. 5 ) can be obtained in this manner.
  • Embodiment 1 has been described upon the case where fresh water is injected so as to be mixed with salt water having a high salt concentration such as sea water, the aforementioned properties hold even when the fresh water is replaced with salt water. Even when thin salt water (salt water having a low salt concentration) is injected so as to be mixed with salt water having a high salt concentration such as sea water, it is possible to increase the temperature of salt water-mixed sherbet ice. However, the highest effect for increasing the temperature of salt water-mixed sherbet ice can be obtained when salt water having a salt concentration of 0, that is, fresh water is used.
  • the drive source (rotary cylinder drive motor) 2 of the ice-maker 1 and the main circulating pump 11 can use a low-speed operating system or a variable-speed operating system in accordance with necessity.
  • FIG. 6 is a diagram showing another example of overall system configuration of the salt water-mixed sherbet ice producing apparatus for carrying out the salt water-mixed sherbet ice producing method.
  • FIG. 7 is a flowchart showing an example of a salt water-mixed sherbet ice producing sequence in the salt water-mixed sherbet ice producing method and the salt water-mixed sherbet ice producing apparatus shown in FIG. 6 .
  • FIG. 8 is a graph showing an example of salt water state and ice-making curve in the salt water-mixed sherbet ice producing method and the salt water-mixed sherbet ice producing apparatus shown in FIG. 6 .
  • Embodiment 2 is configured so that a dewatering process is added to the aforementioned Embodiment 1.
  • Salt water-mixed sherbet ice having an ice concentration IPF higher than that in Embodiment 1 can be produced in Embodiment 2.
  • a dewatering unit composed of a dewatering pump 22 , a dewatering pipe 221 , a dewatering control valve 22 a and an integrating flowmeter 22 b is added to the apparatus shown in FIG. 1 .
  • steps ST 701 to ST 705 are provided between the steps ST 206 and ST 207 in FIG. 2 .
  • the amount of water to be removed is calculated (step ST 7 O 1 ).
  • the stirrer 16 is stopped (step ST 702 ).
  • the dewatering pump 22 is operated (step ST 703 ).
  • the amount of water removed from salt water-mixed sherbet ice in the ice storage tank 14 is measured based on the output of the integrating flowmeter 22 b so that dewatering is stopped when the amount of water removed from the salt water-mixed sherbet ice reaches a predetermined value (step ST 704 ).
  • the stirrer 16 is restarted (step S 705 ).
  • the steps ST 701 to ST 705 are executed by a dewatering function portion 103 of the controller 100 .
  • Embodiment 2 it is found that salt water-mixed sherbet ice at a relatively high temperature of ⁇ 1.5° C. with an ice concentration IPF of 30% which is higher than the ice concentration IPF of 25% in Embodiment 1 can be produced as follows. As represented by the arrow in FIG. 8 , after ice is generated from salt water having a salt concentration of 2.5%, dewatering is slightly performed by the dewatering unit and then fresh water is injected or, in other words, water is removed from the salt water-mixed sherbet ice before the injection of fresh water.
  • FIG. 9 is a flow chart showing a further example of a salt water-mixed sherbet ice producing sequence in the salt water-mixed sherbet ice producing method and the salt water-mixed sherbet ice producing apparatus.
  • FIG. 10 is a graph showing an example of salt water state and ice-making curve in the salt water-mixed sherbet ice producing method and the salt water-mixed sherbet ice producing sequence shown in FIG. 9 .
  • Embodiment 3 is configured so that the ice-making and the injection of fresh water in Embodiment 1 are performed alternately and repeatedly.
  • Salt water-mixed sherbet ice having an ice concentration IPF higher than that in Embodiment 1 can be produced in Embodiment 3 similarly to Embodiment 2.
  • the steps ST 201 to ST 206 are executed by a first standard ice-making function portion 101 - 1 of the controller 100 .
  • steps ST 701 to ST 703 which are the same as the steps ST 207 to ST 209 are executed by a first fresh water injecting function portion 102 - 1 .
  • steps ST 704 to ST 706 which are the same as the steps ST 204 to ST 206 are executed by a second standard ice-making function portion 101 - 2 .
  • the steps ST 207 to ST 209 are executed by a second fresh water injecting function portion 102 - 2 .
  • Embodiment 3 it is found that salt water-mixed sherbet ice having an ice concentration IPF higher than that in Embodiment 1 can be produced like Embodiment 2 in the following manner. As represented by the arrow in FIG. 10 , ice-making and injection of fresh water are performed alternately and repeatedly several times.
  • salt water having a salt concentration of 3.0% in the case where salt water having a salt concentration of 3.0% is used by way of example, as shown in FIG. 11 , salt water-mixed sherbet ice in a temperature range of ⁇ 1.5° C. to ⁇ 0.5° C. and an IPF range of 15% to 25% in a region surrounded by K-B-C-D-M can be produced in Embodiment 1 (without any dewatering unit) and Embodiment 3 (without any dewatering unit).
  • the temperature and IPF of salt water-mixed sherbet ice can be adjusted in a region surrounded by E-C-F.
  • the temperature and IPF of salt water-mixed sherbet ice can be adjusted in a region surrounded by G-C-D-H.
  • the temperature and IPF of salt water-mixed sherbet ice can be adjusted in a region surrounded by K-B-C-D-M.
  • the region surrounded by A-K-M is a region in which dewatering is essential. Unless the dewatering process in Embodiment 2 is provided, the temperature and IPF of salt water-mixed sherbet ice cannot be adjusted in the region surrounded by A-K-M.
  • salt water-mixed sherbet ice in a temperature range of ⁇ 1.5° C. to ⁇ 0.5° C. and an IPF range of 15% to 25% in a region surrounded by A-B-C-D can be produced in Embodiment 2 (with a dewatering unit).
  • the temperature and IPF of salt water-mixed sherbet ice can be adjusted in a region surrounded by E-C-F.
  • the temperature and IPF of salt water-mixed sherbet ice can be adjusted in a region surrounded by A-B-C-D.
  • salt water used in Embodiments 1 to 3 means so-called salt water such as salt water obtained by mixing salt and water or sea water.
  • Embodiments 1 to 3 have been described upon the case where the injection of fresh water and dewatering are controlled by the controller 100 used commonly, the injection of fresh water and dewatering may be controlled by another controller provided separately from the controller 100 . In this case, the controller can be easily added to the existing salt water-mixed sherbet ice producing apparatus.
  • FIGS. 1 to 12 identical or equivalent parts are referred to by the same numerals.
  • description of parts identical or equivalent to those in Embodiment 1 is omitted as a rule.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Thermal Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Confectionery (AREA)
  • Production, Working, Storing, Or Distribution Of Ice (AREA)
US12/149,794 2007-05-11 2008-05-08 Method and apparatus for producing salt water-mixed sherbet ice Abandoned US20080276629A1 (en)

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US20120304671A1 (en) * 2011-04-05 2012-12-06 Institute Mixed-phase generator and use thereof
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JP2023031563A (ja) * 2021-08-25 2023-03-09 国立大学法人北海道大学 塩分含有水氷及び／又は水氷の製造量算出装置、塩分含有水氷及び／又は水氷の製造量算出方法、及び、塩分含有水氷及び／又は水氷の製造量算出装置を備えた塩分含有水氷及び／又は水氷製造装置

Family Cites Families (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1014566B (de) * 1955-08-30 1957-08-29 Linde Eismasch Ag Verfahren zum Herstellen gefrorener Loesungen, insbesondere von Meerwassereis
JPS55127970U (ja) * 1979-03-07 1980-09-10
ES2045086T3 (es) * 1987-07-20 1994-01-16 Sunwell Eng Co Ltd Metodo y aparato para enfriar pescado a bordo de un barco.
CN2232205Y (zh) * 1995-06-23 1996-08-07 李瑞铭 果汁雪泥制造机
JPH09229525A (ja) * 1996-02-19 1997-09-05 Top:Kk 塩水氷製造方法及びその装置
JP3046599U (ja) * 1997-08-27 1998-03-10 和光 藤田 塩水氷製造装置
JP3681107B2 (ja) * 2000-10-05 2005-08-10 株式会社前川製作所 生鮮食品の鮮度保持方法と生鮮食品の鮮度保持システム
JP4124632B2 (ja) * 2002-10-31 2008-07-23 日新興業株式会社 海水氷の製造方法およびその装置
JP2005061720A (ja) * 2003-08-13 2005-03-10 Sasakura Engineering Co Ltd 含塩氷製造装置
JP2005201474A (ja) * 2004-01-13 2005-07-28 Hoshizaki Electric Co Ltd 塩水調製装置
JP4437706B2 (ja) * 2004-06-23 2010-03-24 株式会社前川製作所 海水シャーベット氷の製氷システム
JP2006189227A (ja) * 2005-01-07 2006-07-20 Reinetsu Giken:Kk シャーベット氷生成装置
JP4716768B2 (ja) * 2005-03-25 2011-07-06 三菱電機株式会社 塩水混合シャーベット状アイスの製造方法
JP2006266640A (ja) * 2005-03-25 2006-10-05 Mitsubishi Electric Corp 塩水混合シャーベット状アイスの製造方法および塩水混合シャーベット状アイスの製造装置
JP2007040548A (ja) * 2005-07-29 2007-02-15 Kajima Corp 塩水軟氷の製造方法及び装置

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DE102008022576A1 (de) 2008-12-11
JP2008281293A (ja) 2008-11-20
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DE102008022576B4 (de) 2010-07-22
CN101300995B (zh) 2012-01-11
JP5144118B2 (ja) 2013-02-13

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