KR102517712B1 - Ice making system for seawater ice slurry using supercooling - Google Patents

Abstract

The present invention relates to a seawater ice slurry-making system using supercooling, which can more stably supply a safe marine product, comprising: an ice storage unit (15); a seawater supply unit (20); a preheater (25); a seawater circulation pump (21); a heater (26); a micro-filter (30); a brine freezer (35); a supercooler (45); a supercooling reliever (46); and a sensor unit (50).

Description

Seawater ice slurry ice making system using supercooling {Ice making system for seawater ice slurry using supercooling}

The present invention relates to a slurry ice making system, and more particularly, to a seawater ice slurry using supercooling capable of continuously producing a seawater ice slurry having excellent fluidity using supercooling to maintain a constant freshness of aquatic products through the seawater ice slurry It's about the ice making system.

Supercooling refers to a phenomenon in which the liquid or gas is cooled below the freezing point without being crystallized into a solid when there are insufficient or no nuclei in the process of lowering the temperature of the liquid or gas. In addition, the seawater ice slurry ice making system using supercooling is a device that continuously produces seawater ice slurry having fluidity using supercooling and can be used as a cooling and heat source for aquatic products. Among various ice-making systems, the ice-making system using supercooling supercools the aqueous solution on the cooling surface to generate the supercooled aqueous solution, relieves the supercooled aqueous solution in a separate space, and stores it in the form of ice slurry. Compared to other ice-making systems, It has the advantage of simple configuration and excellent cooling efficiency.

On the other hand, in the seawater ice slurry ice making system using supercooling, the amount of cooling heat capable of cooling a large amount of aquatic products at a time and the optimal freezing temperature according to the target fish species are required. In addition, in the seawater ice slurry ice making system using supercooling, fluidity capable of stably discharging the seawater ice slurry from a supply tank is required to bring the seawater ice slurry into direct contact with aquatic products and cool the aquatic products.

In addition, in the seawater ice slurry ice making system using supercooling, since the amount of seawater ice slurry used per day varies according to the amount of catches affected by the sea conditions, a cooling function is also required when storing ice for a long time.

However, in the conventional seawater ice slurry ice making system using supercooling, when the supercooled aqueous solution inside the cooler or the pipe is dissolved, ice may be formed inside the cooler or the pipe, resulting in damage to the cooler or damage to the pipe. There was a problem that it could be closed.

In addition, in the conventional seawater ice slurry ice making system using supercooling, the temperature of the brine at the output side of the brine refrigerator for cooling the brine cannot be precisely controlled, so that the seawater cannot be stably supercooled inside the supercooler. There was a problem.

On the other hand, in the conventional seawater ice slurry ice making system using supercooling, in order to prevent ice from being generated in the supercooler and closing the inside of the supercooler, seawater supplied from an ice storage tank is heated to a constant temperature, A heater capable of melting the included ice particles is essentially provided.

However, since the conventional seawater ice slurry ice making system using supercooling requires the use of a heater with a load of 11 kW or more to produce 10 tons or more of seawater ice slurry per day, energy consumption for operating the heater increases.

KR 10-1174975 B1

The present invention has been made to solve the above problems, and an object of the present invention is to continuously produce a seawater ice slurry having excellent fluidity using supercooling, thereby maintaining a constant freshness of aquatic products through the seawater ice slurry It is to provide a seawater ice slurry ice making system using supercooling.

In addition, the seawater ice slurry ice making system using supercooling according to the present invention is seawater ice that can stably form supercooling of seawater inside the supercooler by precisely controlling the temperature of the brine at the output side of the brine refrigerator in which the brine is cooled. It is to provide a slurry ice making system.

In addition, an object of the present invention is to provide a heat storage tank for converting a low-temperature fluid discharged from a preheater in a brine refrigerator into a high-temperature fluid by exchanging heat with a high-temperature and high-pressure gaseous refrigerant discharged from a condenser to primarily heat seawater An object of the present invention is to provide a seawater ice slurry ice making system using supercooling with improved heating efficiency of a preheater.

In order to solve the above technical problems, the seawater ice slurry ice making system 10 using supercooling according to the present invention is for producing seawater ice slurry using supercooling, and the seawater ice slurry ice making system using supercooling ( 10) includes an ice storage unit 15 for accommodating ice and seawater included in the seawater ice slurry, a seawater supply unit 20 for supplying seawater having a preset standard salinity to the ice storage unit 15, and the ice storage unit 15 ) and a preheater 25 that primarily heats the seawater supplied from the ice storage unit 15 in order to melt ice particles included in the seawater, between the ice storage unit 15 and the preheater 25 A seawater circulation pump 21 provided in the ice storage unit 15 to supply the seawater accommodated in the ice storage unit 15 to the preheater 25, connected to the preheater 25, to melt ice particles included in the seawater, A heater 26 for secondarily heating the seawater supplied from the preheater 25, connected to the heater 26, foreign substances contained in the seawater supplied from the heater 26 and the heater 26 A microfilter 30 for filtering ice particles that could not be removed, a brine freezer 35 for cooling the brine to a preset reference brine temperature, connected to the brine freezer 35 and the microfilter 30, respectively, A supercooler 45 for converting seawater supplied from the microfilter 30 into supercooled seawater having a pre-set reference supercooling temperature by exchanging heat with the brine supplied from the brine cooler 35, and the supercooler 45 The temperature of the supercooler 46 and the seawater or brine that is connected to the supercooler 45 to release the supercooled seawater supplied from the supercooler 45 to generate seawater ice slurry and then supply it to the ice storage unit 15 It is characterized in that it comprises a sensor unit 50 for measuring.

In addition, the sensor unit 50 is provided between the seawater circulation pump 21 and the preheater 25 and measures the temperature of the seawater at the input side of the preheater 25. A first temperature sensor T1, A second temperature sensor (T2) provided between the microfilter 30 and the supercooler 45 to measure the temperature of the seawater at the input side of the supercooler 45, the preheater 25 and the heater 26 ), provided between the third temperature sensor T3 for measuring the temperature of the seawater at the output side of the preheater 25, provided between the supercooler 45 and the supercooler 46, the supercooling A fourth temperature sensor (T4) for measuring the temperature of the supercooled seawater on the output side of the machine 45, provided between the supercooling eliminator 46 and the ice storage unit 15, seawater on the output side of the supercooling eliminator 46 A fifth temperature sensor (T5) for measuring the temperature of the ice slurry and provided between the output side of the brine cooler 35 and the supercooler 45 to measure the temperature of the brine on the input side of the supercooler 45 It is characterized in that it includes 6 temperature sensors (T6).

In addition, the ice storage unit 15 includes an ice storage tank 15a in which the seawater ice slurry supplied from the supercooling eliminator 46 is separated into ice and seawater due to a specific gravity difference, and an agitator motor 15b rotated by electric power The agitator 15c rotated by the agitator motor 15b so that the ice and seawater contained in the ice storage tank 15a can be mixed, and the seawater ice slurry stored in the storage tank 15a is used. When the ice filling rate of the slurry pump 15d and the seawater ice slurry accommodated in the ice storage tank 15a reaches a preset reference ice filling rate, the ice and seawater contained in the ice storage tank 15a and a controller 15e that controls the agitator motor 15b to be driven so that the mixture can be mixed. When the slurry pump 15d is stopped, the controller 15e controls a previously set Control to rotate at 1 rotational speed, and when the slurry pump 15d is driven, control the agitator motor 15b to rotate at a preset second rotational speed, the second rotational speed being the first rotational speed It is characterized by being set higher.

In addition, the seawater supply unit 20 is connected to a tap water inlet 20a into which tap water flows, a seawater inlet 20b into which seawater flows, the tap water inlet 20a and the seawater inlet 20b, respectively, An electric valve 20e for controlling the supply of tap water flowing in from the tap water inlet 20a or seawater flowing in from the seawater inlet 20b, and connected to the electric valve 20e, the tap water inlet ( A salinity controller 20c in which tap water introduced from 20a) and seawater introduced from the seawater inlet 20b are mixed with each other, a salinity meter 20d measuring the salinity of seawater accommodated in the salinity controller 20c, and the salinity meter ( Including a concentration controller (20f) for controlling the electric valve (20e) according to the salinity of the seawater measured by 20d),

The electric valve 20e is connected to the tap water inlet 20a and is connected to the first opening/closing part 20e1 formed to open and close to supply or shut off tap water and the seawater inlet 20b to supply seawater. or a second opening and closing portion 20e2 formed to be opened and closed for blocking, and the concentration controller 20f controls the salinity controller 20c when the salinity of seawater measured by the salinity meter 20d exceeds the reference salinity. Until the salinity of the seawater contained in falls to the reference salinity, the first opening and closing part 20e1 is opened and the second opening and closing part 20e2 is controlled to be closed, and the seawater measured by the salinity meter 20d is controlled. When the salinity is less than the reference salinity, the second opening and closing part 20e2 is opened and the first opening and closing part 20e1 is closed until the salinity of the seawater received in the salinity controller 20c rises to the reference salinity. and the salinity controller 20c supplies the seawater adjusted to the standard salinity by the concentration controller 20f to the storage tank 15a, and the seawater supply unit 20 is installed inside the storage tank 15a. Further comprising a water level gauge (20g) for measuring the level of seawater accommodated in and a water level controller (20h) for controlling the seawater circulation pump 21 according to the level of seawater measured by the water level gauge (20g), wherein the water level controller (20h) is the seawater circulation pump ( 21) is characterized in that it is controlled to be driven.

In addition, the brine freezer 35 is connected to the supercooler 45, provided between the brine tank 35a in which the cooled brine is accommodated, the brine tank 35a and the supercooler 45 and a brine pump 35b for supplying the brine accommodated in the brine tank 35a to the supercooler 45, provided on one side of the brine pump 35b, measured by the fourth temperature sensor T4 The brine pump so that the temperature of the supercooled seawater at the output side of the supercooler 45 can be maintained lower than the temperature of the seawater at the input side of the supercooler 45 measured by the second temperature sensor T2 by a preset set temperature A brine pump controller 35c for controlling the flow rate of the brine discharged from (35b), provided between the brine tank 35a and the supercooler 45 to heat the brine supplied to the supercooler 45 The amount of heat generated by the brine heater 35d is controlled so that the temperature of the input-side brine of the supercooler 45 measured by the brine heater 35d and the sixth temperature sensor T6 can be constantly maintained at the reference brine temperature It is characterized in that it comprises a brine heater controller (35e) to.

In addition, the brine refrigerator 35 has a compressor 40a for compressing low-temperature, low-pressure gaseous refrigerant into high-temperature and high-pressure gaseous refrigerant, and heat exchanges the high-temperature and high-pressure gaseous refrigerant discharged from the compressor 40a with external air, A condenser (40b) for condensing into a liquid refrigerant, and an expansion valve (40e) for expanding the medium-temperature and high-pressure liquid refrigerant to a low-temperature and low-pressure liquid refrigerant by reducing the pressure of the medium-temperature and high-pressure liquid refrigerant that has passed through the condenser (40b) through a fine nozzle provided therein. ), connected to the expansion valve 40e, the supercooler 45, and the brine tank 35a, respectively, and the low-temperature and low-pressure liquid refrigerant discharged from the expansion valve 40e is medium temperature discharged from the supercooler 45 An evaporator (40f) that evaporates into a low-temperature, low-pressure gaseous refrigerant by exchanging heat with the brine, and is connected to the discharge side of the condenser (40b) and the preheater (25), respectively, so that the low-temperature fluid discharged from the preheater (25) The medium-temperature and high-pressure gaseous refrigerant discharged from the condenser 40b exchanges heat with the heat storage tank 40h to convert it into a high-temperature fluid and is connected to the heat storage tank 40h and the preheater 25, respectively, in the heat storage tank 40h. and a hot water circulation pump 40i for resupplying the discharged high-temperature fluid to the preheater 25, and the preheater 25 transfers seawater supplied from the seawater circulation pump 21 to the hot water circulation pump ( The seawater is heated by exchanging heat with the high-temperature fluid discharged from 40i), and the temperature of the seawater at the output side of the preheater 25 measured by the third temperature sensor T3 of the brine refrigerator 35 is in advance. When it is less than the set reference freezing temperature, the hot water controller controls the hot water circulation pump 40i to increase the discharge amount of the fluid until the temperature of the seawater at the output side of the preheater 25 rises by a preset additional temperature ( 40j), wherein the seawater ice slurry ice making system 10 using the supercooling has a temperature of the seawater at the output side of the preheater 25 measured by the third temperature sensor T3 is less than the reference freezing temperature Heater controller for controlling the heat generation amount of the heater 26 to increase so that the temperature of the seawater on the input side of the supercooler 45 is higher than the temperature of the seawater on the output side of the preheater 25 by a preset reference rising temperature It is characterized by further comprising (51).

The seawater ice slurry ice making system using supercooling according to the present invention continuously produces seawater ice slurry having excellent fluidity by using supercooling, and can maintain the freshness of aquatic products through the seawater ice slurry. Through this, there is an effect of improving the commercial value of aquatic products and supplying safe aquatic products more stably.

In addition, the seawater ice slurry ice making system using supercooling according to the present invention has the effect of stably forming supercooling of seawater inside the supercooler by precisely controlling the temperature of the brine at the output side of the brine cooler in which the brine is cooled. .

In addition, in the seawater ice slurry ice making system using supercooling according to the present invention, the brine refrigerator is provided with a heat storage tank that exchanges heat with the high-temperature and high-pressure gaseous refrigerant discharged from the condenser and converts the low-temperature fluid discharged from the preheater into a high-temperature fluid , By improving the heating efficiency of the preheating heater for primarily heating seawater, there is an effect of reducing energy consumption for the heater for secondary heating of seawater by 90% or more.

1 is a block diagram of a seawater ice slurry ice making system using supercooling according to the present invention.
FIG. 2 is a detailed view of the seawater ice slurry ice making system using supercooling shown in FIG. 1 .
3 is a detailed view of the seawater supply unit shown in FIG. 2;
Figure 4 is a detailed view of the brine refrigerator shown in Figure 1.
5 is a view showing a second embodiment of the brine refrigerator shown in FIG.

Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings in order to describe in detail enough for those skilled in the art to easily implement the technical idea of the present invention.

However, the following examples are merely examples to aid understanding of the present invention, and the scope of the present invention is not reduced or limited thereby. In addition, the present invention may be embodied in many different forms and is not limited to the embodiments described herein.

1 is a configuration diagram of a seawater ice slurry ice making system 10 using supercooling according to the present invention, and FIG. 2 is a detailed view of the seawater ice slurry ice making system 10 using supercooling shown in FIG.

1 and 2, the seawater ice slurry ice making system 10 using supercooling according to the present invention includes an ice storage unit 15, a seawater supply unit 20, a seawater circulation pump 21, a preheater 25, It is configured to include a heater 26, a microfilter 30, a brine freezer 35, a supercooler 45, and a supercooler 46.

First, ice and seawater included in the seawater ice slurry are accommodated in the ice storage unit 15, respectively.

In addition, the seawater supply unit 20 is provided on the top or side of the ice storage unit 15 to supply seawater having a preset standard salinity to the ice storage unit 15 . At this time, the standard salinity of seawater may be set to 1%.

In addition, the preheater 25 is connected to the ice storage unit 15 and primarily heats the seawater supplied from the ice storage unit 15 to melt ice particles included in the seawater. At this time, the preheater 25 is made of titanium to prevent corrosion by seawater.

In addition, the seawater circulation pump 21 is provided between the ice storage unit 15 and the preheater 25, and supplies the seawater accommodated in the ice storage unit 15 to the preheater 25.

Seawater supplied from the ice storage unit 15 to the supercooler 45 through the seawater circulation pump 21 contains many fine ice particles. When ice particles are introduced into the supercooler 45, the ice particles act as ice nuclei inside the supercooler 45, thereby solving the supercooling of seawater. As a result, seawater ice slurry is generated inside the supercooler 45, and the inside of the supercooler 45 may be closed due to ice.

Therefore, the preheater 25 heats the seawater supplied to the preheater 25 to prevent ice particles from entering the supercooler 45 in advance, thereby melting the ice particles included in the seawater. do.

The heater 26 is connected to the preheater 25 to secondarily heat the seawater supplied from the preheater 25 to a preset temperature in order to melt ice particles included in the seawater.

Further, the microfilter 30 is connected to the heater 26 to filter foreign substances included in the seawater supplied from the heater 26 and ice particles that have not yet been removed by the heater 26 . The seawater filtered by the microfilter 30 is supplied to the supercooler 45.

Ice particles included in the seawater supplied to the supercooler 45 may not be completely removed by the heater 26 . In addition, when ice particles or other foreign substances are introduced into the supercooler 45, the ice particles or foreign substances act as ice nuclei inside the supercooler 45, thereby solving the supercooling of seawater.

Therefore, the microfilter 30 filters ice particles or foreign substances included in the seawater supplied from the heater 26 to prevent ice particles or foreign substances from entering the supercooler 45 in advance. .

First, the brine freezer 35 cools the brine to a preset reference brine temperature. At this time, the reference brine temperature may be set to -3.7 ° C.

In addition, the supercooler 45 is connected to the brine freezer 35 and the microfilter 30, respectively, and heat-exchanges seawater having a standard salinity supplied from the microfilter 30 with the brine supplied from the brine freezer 35 , which is converted into supercooled seawater having a pre-set standard supercooled temperature.

In this case, the reference supercooling temperature may be set to -2.7°C. In addition, the supercooler 45 may be formed as a plate type heat exchanger made of titanium to prevent corrosion by seawater and increase heat exchange efficiency.

At this time, the supercooled state means a phenomenon in which the fluid is lower than the freezing temperature of the fluid without being frozen at the freezing temperature of the fluid.

In addition, the inner diameters of the inlet for supplying seawater to the supercooler 45 and the outlet for discharging supercooled seawater to the supercooler 46 are each sufficiently large as 150 mm, so that the speed of seawater in the inlet and The velocity of the supercooled seawater at the outlet may be kept constant.

In addition, the discharge unit may be configured such that the flow of supercooled seawater is formed as a laminar flow and the supercooling is not resolved due to the impact of the flow. In addition, 22 channels through which seawater flows in the supercooler 45 may be configured.

The brine introduced into the supercooler 45 is heat-exchanged with seawater and converted into medium-temperature brine. After that, the medium-temperature brine is re-supplied to the brine freezer 35.

In addition, the supercooler 46 is connected to the supercooler 45 to release the supercooled state of the supercooled seawater supplied from the supercooler 45, thereby generating seawater ice slurry.

The seawater ice slurry generated in the supercooler 46 is separated into water and ice in the ice storage tank 15a. When the ice making cycle is repeatedly performed, the ice packing factor (IPF) of the seawater ice slurry stored in the ice storage tank 15a gradually increases. The ice making cycle is repeated until the ice filling rate of the seawater ice slurry stored in the ice storage tank 15a reaches a preset reference ice filling rate.

At this time, the standard ice filling rate may be set to 30% so that the seawater ice slurry has sufficient fluidity, and the standard melting temperature may be set to -0.7 ° C. to prevent freezing of aquatic products.

At this time, the supercooling eliminator 46 may relieve the supercooled state of the supercooled seawater by using cavitation or impact energy by ultrasonic vibration. When the supercooling state is resolved, the temperature of the seawater rises to a freezing temperature corresponding to the salinity of the seawater, and ice is generated in the seawater by the energy corresponding to the temperature rise of the seawater. Through this, a seawater ice slurry containing ice and seawater is formed, and the seawater ice slurry is supplied to the ice storage unit 15.

Then, the sensor unit 50 measures the temperature of seawater or brine.

Meanwhile, the sensor unit 50 includes a first temperature sensor T1, a second temperature sensor T2, a third temperature sensor T3, a fourth temperature sensor T4, a fifth temperature sensor T5, and a sixth temperature sensor. It is composed of a temperature sensor (T6), an upper temperature sensor (TH), a central temperature sensor (TM) and a lower temperature sensor (TL).

First, the first temperature sensor T1 is provided between the seawater circulation pump 21 and the preheater 25 to measure the temperature of the seawater at the input side of the preheater 25.

And, the second temperature sensor T2 is provided between the microfilter 30 and the supercooler 45 to measure the temperature of the seawater at the input side of the supercooler 45 .

And, the third temperature sensor T3 is provided between the preheater 25 and the heater 26 to measure the temperature of the seawater on the output side of the preheater 25 .

And, the fourth temperature sensor T4 is provided between the supercooler 45 and the supercooler eliminator 46 to measure the temperature of the supercooled seawater at the output side of the supercooler 45 .

The fifth temperature sensor T5 is provided between the supercooling eliminator 46 and the ice storage unit 15 to measure the temperature of the seawater ice slurry on the output side of the supercooling eliminator 46.

And, the sixth temperature sensor (T6) is provided between the output side of the brine cooler 35 and the supercooler 45, and measures the temperature of the input-side brine of the supercooler 45.

In addition, the upper temperature sensor TH is provided on the inner upper portion of the ice storage tank 15a to measure the temperature of the seawater ice slurry accommodated in the inner upper portion of the ice storage tank 15a.

Also, the central temperature sensor TM is provided at the inner center of the ice storage tank 15a to measure the temperature of the seawater ice slurry accommodated in the inner center of the ice storage tank 15a.

Also, the lower temperature sensor TL is provided at the inner lower portion of the ice storage tank 15a to measure the temperature of the seawater ice slurry accommodated in the inner lower portion of the ice storage tank 15a.

At this time, it is preferable that the temperature sensor is an ultra-precision temperature sensor that has undergone calibration.

Meanwhile, the ice storage unit 15 includes an ice storage tank 15a, an agitator motor 15b, an agitator 15c, a slurry pump 15d, and a controller 15e.

First, the ice storage tank 15a is connected to the supercooler 46, and in the ice storage tank 15a, the seawater ice slurry supplied from the supercooler 46 is ice and seawater due to the difference in specific gravity between the ice and the seawater. are separated from each other by

Specifically, in the ice storage tank 15a, due to the difference in specific gravity between ice and seawater, ice moves to the upper part of the ice storage tank 15a, and seawater moves to the lower part of the ice storage tank 15a, and the seawater circulation pump 21 is introduced

When the circulation process is repeated, the water contained in the seawater is continuously turned into ice and accumulated on the upper portion of the ice storage tank 15a. And, the water contained in the seawater is gradually reduced, and the salinity of the seawater gradually rises.

Meanwhile, in the seawater stored in the ice storage tank 15a, the salinity of the seawater may be changed as the ice filling rate of the seawater ice slurry is changed. In addition, as the salinity of seawater is changed, the freezing temperature of seawater may also be changed.

For example, when the ice filling rate of the seawater ice slurry is 30% in seawater having a salinity of 1%, the salinity of the seawater may be changed to 1.43%, and the freezing temperature of the seawater may be changed to -0.7°C.

In addition, when the ice filling rate of the seawater ice slurry increases, the fluidity of the seawater ice slurry decreases, and thus the transport of the seawater ice slurry by the slurry pump 15d may become difficult. Accordingly, in the ice storage tank 15a, ice may be concentrated and stored at a preset standard ice filling rate. In this case, the reference ice filling rate may be set to 30%.

At this time, the ice filling rate of the seawater ice slurry can be confirmed through the temperature of the seawater ice slurry measured at the upper, middle, and lower parts of the inner side of the ice-making tank 15a, respectively.

Specifically, the ice filling rate of the seawater ice slurry can be checked through the temperatures of the seawater ice slurry measured by the upper temperature sensor TH, the central temperature sensor TH, and the lower temperature sensor TH, respectively.

As the concentration of seawater before ice making and the ice filling rate increase, the temperature of the seawater ice slurry gradually decreases. For example, when the salinity of seawater before ice making is 1% and the ice filling rate is 30%, the temperature of the seawater ice slurry becomes -0.7°C.

Therefore, when the temperature of the seawater ice slurry measured at the top, center, and bottom of the ice-making tank 15a reaches a preset reference temperature, it is determined that the ice filling rate of the seawater ice slurry has reached the standard ice filling rate, The cycle may end.

Also, the agitator motor 15b is provided above the ice storage tank 15a and rotates by electric power.

Further, the agitator 15c is provided inside the ice storage tank 15a so that ice and seawater accommodated in the ice storage tank 15a can be mixed in one direction or the opposite direction by the rotational force of the agitator motor 15b. turn in the direction

In addition, the slurry pump 15d is provided on the other lower side of the ice storage tank 15a, and supplies the seawater ice slurry stored in the ice storage tank 15a to an external place of use.

In addition, the controller 15e may mix the ice and seawater stored in the storage tank 15a when the ice filling rate of the seawater ice slurry accommodated in the storage tank 15a reaches a preset reference ice filling rate. The agitator motor 15b is controlled to be driven, and the drive of the seawater circulation pump 21 is controlled to stop.

Also, the controller 15e may control the rotational speed of the agitator motor 15b according to whether the slurry pump 15d is driven.

Specifically, the controller 15e controls the agitator motor 15b to rotate at a preset first rotational speed when the slurry pump 15d is stopped.

Further, the controller 15e controls the agitator motor 15b to rotate at a preset second rotational speed when the slurry pump 15d is driven. At this time, the second rotational speed is set higher than the first rotational speed.

When the slurry pump 15d is stopped, the seawater ice slurry stored in the ice storage tank 15a is not supplied to a user. Accordingly, the agitator motor 15b may be rotated at a low first rotational speed by the controller 15e so that ice and seawater in the ice storage tank 15a can be mixed to a minimum.

Also, when the slurry pump 15d is operated, the seawater ice slurry stored in the ice storage tank 15a is supplied to a place of use. Accordingly, the agitator motor 15b may be rotated at a high second rotational speed by the controller 15e so that ice and seawater in the ice storage tank 15a may be uniformly mixed.

FIG. 3 is a detailed view of the seawater supply unit 20 shown in FIG. 2 .

2 to 3, the seawater supply unit 20 includes a tap water inlet 20a, a seawater inlet 20b, a salinity controller 20c, a salinity meter 20d, a motorized valve 20e, and a concentration controller 20f. ) is composed of.

First, the tap water inlet 20a becomes a passage through which tap water flows.

And, the sea water inlet (20b) becomes a passage through which sea water is introduced. In this case, the seawater may be seawater directly supplied from the sea or seawater prepared using water and salt.

In addition, the electric valve 20e is connected to the tap water inlet 20a and the seawater inlet 20b, respectively, to supply tap water flowing in from the tap water inlet 20a or seawater flowing in from the seawater inlet 20b. control whether

In addition, the salinity controller 20c is connected to the electric valve 20e, and in the salinity controller 20c, the tap water introduced from the tap water inlet 20a and the seawater introduced from the seawater inlet 20b are mixed with each other.

In addition, the salinity controller 20c is connected to the ice storage tank 15a and supplies seawater having a preset reference salinity to the ice storage tank 15a. At this time, the standard salinity may be set to 1%.

And, the salinity meter 20d is provided on one side of the salinity controller 20c to measure the salinity of seawater accommodated in the salinity controller 20c.

Then, the concentration controller 20f controls the motorized valve 20e according to the salinity of seawater measured by the salinity meter 20d.

Meanwhile, the motorized valve 20e includes a first opening/closing portion 20e1 and a second opening/closing portion 20e2.

First, the first opening/closing unit 20e1 is connected to the tap water inlet 20a and is formed to be opened and closed to supply or block tap water.

And, the second opening and closing portion (20e2) is connected to the sea water inlet (20b), is formed to be opened and closed to supply or block the sea water.

Then, the concentration controller 20f controls the first opening/closing unit 20e1 until the salinity of the seawater received in the salinity controller 20c descends to the reference salinity when the salinity of the seawater measured by the salinity meter 20d exceeds the reference salinity. is opened and the second opening/closing part 20e2 is controlled to be closed.

Then, the concentration controller (20f), when the salinity of the seawater measured by the salinity meter (20d) is less than the reference salinity, until the salinity of the seawater accommodated in the salinity controller (20c) rises to the reference salinity, the second opening and closing unit (20e2) is opened and the first opening/closing part 20e1 is controlled to be closed.

Then, the salinity controller 20c supplies the seawater adjusted to the standard salinity by the concentration controller 20f to the ice storage tank 15a.

On the other hand, seawater diluted to a standard salinity in the salinity controller 20c is supplied until the water level in the storage tank 15a reaches a preset full water level. At this time, the lower the temperature of the seawater supplied from the salinity controller 20c to the ice storage tank 15a, the better.

In addition, the water level gauge 20g is provided inside the ice storage tank 15a to measure the level of seawater accommodated in the ice storage tank 15a.

And, the water level controller 20h controls the seawater circulation pump 21 according to the water level measured by the water level gauge 20g.

Specifically, the water level controller 20h is a seawater circulation pump so that the seawater contained in the ice storage tank 15a can be supplied to the preheater 25 when the level of seawater measured by the water level gauge 20g is higher than a preset low level. (21) is controlled to be driven. At this time, the low water level is set lower than the full water level.

On the other hand, when the water level controller 20h drives the seawater circulation pump 21, the brine pump controller 35c drives the brine pump 35b so that the brine accommodated in the brine freezer 35 can be supplied to the supercooler 45 control so that

When the seawater circulation pump 21 is operated, the seawater discharged from the ice storage tank 15a passes through the preheater 25, the heater 26, the microfilter 30, the supercooler 45, and the supercooler 46, respectively. After passing through, it is re-supplied to the ice storage tank 15a.

4 is a detailed view of the brine refrigerator 35 shown in FIG.

Referring to FIG. 4, the brine refrigerator 35 includes a brine tank 35a, a brine pump 35b, a brine pump controller 35c, a brine heater 35d, and a brine heater controller 35e.

First, the brine tank 35a is connected to the supercooler 45, and cooled brine is accommodated in the brine tank 35a.

Also, the brine pump 35b is provided between the brine tank 35a and the supercooler 45 to supply the brine stored in the brine tank 35a to the supercooler 45.

And, the brine pump controller 35c is provided on one side of the brine pump 35b, and the temperature of the supercooled seawater at the output side of the supercooler 45 measured by the fourth temperature sensor T4 is measured by the second temperature sensor T2. The flow rate of the brine discharged from the brine pump 35b is controlled so that it can be maintained lower than the temperature of the seawater at the input side of the supercooler 45 measured by the set temperature set in advance. At this time, the setting temperature may be set to 2.5 °C.

The brine heater 35d is provided between the brine tank 35a and the supercooler 45 to heat the brine supplied to the supercooler 45.

And, the brine heater controller 35e controls the brine heater 35d so that the temperature of the input side brine of the supercooler 45 measured by the sixth temperature sensor T6 can be constantly maintained at a preset reference brine temperature. Control the amount of heat. At this time, the reference brine temperature may be set to -3.7 ° C.

On the other hand, when the temperature of the brine on the input side of the supercooler 45 is lower than the reference brine temperature, the temperature of the surface of the supercooler 45 also decreases. As a result, ice may be generated on the surface of the supercooler 45 and the inside of the supercooler 45 may be closed.

In addition, when the fluctuation range of the temperature of the brine on the input side of the supercooler 45 increases, the fluctuation range of the temperature of the seawater inside the supercooler 45 increases, so that the supercooling of the seawater may not be stably formed.

Therefore, the brine heater 35d heats the brine supplied to the supercooler 45 to keep the temperature of the input side brine of the supercooler 45 constant at a preset reference brine temperature, thereby solving the above problems. can

On the other hand, the brine refrigerator 35 includes a compressor 40a, a condenser 40b, a receiver 40c, a filter dryer 40d, an expansion valve 40e, an evaporator 40f, a gas-liquid separator 40g, and a heat storage tank 40h. ), a hot water circulation pump 40i and a hot water controller 40j.

First, the compressor 40a compresses the low-temperature, low-pressure gaseous refrigerant into a high-temperature, high-pressure gaseous refrigerant.

Also, the condenser 40b is connected to the compressor 40a and condenses the high-temperature and high-pressure gaseous refrigerant discharged from the compressor 40a into a medium-temperature and high-pressure liquid refrigerant by exchanging heat with external air.

In addition, the receiver 40c is connected to the condenser 40b to temporarily store the excess of the medium-temperature and high-pressure liquid refrigerant that has passed through the condenser 40b, and converts the medium-temperature and high-pressure liquid refrigerant to the capacity required by the evaporator 40f. It serves as a kind of safety device that is transmitted to the expansion valve 40e.

And, the filter dryer 40d is connected to the receiver 40c to remove impurities and moisture included in the medium-temperature and high-pressure liquid refrigerant passing through the receiver 40c.

Further, the expansion valve 40e is connected to the filter dryer 40d and reduces the pressure of the medium-temperature and high-pressure liquid refrigerant passing through the filter dryer 40d through a fine nozzle provided inside the expansion valve 40e. , it expands with a low-temperature, low-pressure liquid refrigerant.

In addition, the evaporator 40f is connected to the expansion valve 40e, the supercooler 45, and the brine tank 35a, respectively, and discharges the low-temperature and low-pressure liquid refrigerant discharged from the expansion valve 40e from the supercooler 45 It exchanges heat with the medium-temperature brine and evaporates into a low-temperature, low-pressure gaseous refrigerant.

And, the gas-liquid separator 40g is provided between the evaporator 40f and the compressor 40a, so that the liquid refrigerant does not flow into the suction side of the compressor 40a, the low-temperature and low-pressure gaseous refrigerant passing through the evaporator 40f The mixed liquid refrigerant is separated.

At this time, the medium-temperature brine discharged from the evaporator 40f passes through the evaporator 40f and is converted into low-temperature brine, and the low-temperature brine is re-supplied to the brine tank 35a.

Meanwhile, the heat storage tank 40h is connected to the discharge side of the condenser 40b and the preheater 25, respectively, so that the low-temperature fluid discharged from the preheater 25 exchanges heat with the medium-temperature and high-pressure gaseous refrigerant discharged from the condenser 40b. and converts it into a high-temperature fluid. At this time, the fluid is preferably implemented in the form of antifreeze.

5 is a view showing a second embodiment of the brine refrigerator 35 shown in FIG.

Referring to FIGS. 4 and 5 , the heat storage tank 40h may be disposed between the discharge side of the condenser 40b and the receiver 40c or between the compressor 40a and the condenser 40b.

Further, the hot water circulation pump 40i is connected to the heat storage tank 40h and the preheater 25, respectively, and supplies the high-temperature fluid discharged from the heat storage tank 40h to the preheater 25 again.

Meanwhile, the preheater 25 may heat the seawater supplied from the seawater circulation pump 21 by exchanging heat with the high-temperature fluid discharged from the hot water circulation pump 40i.

In addition, the hot water controller 40j determines that the temperature of the seawater at the output side of the preheater 25 measured by the third temperature sensor T3 is lower than the preset reference freezing temperature. The hot water circulation pump 40i is controlled to increase the discharge amount of the fluid until the additional temperature set in advance increases. At this time, the reference freezing temperature may be set to -0.5 ° C, and the additional temperature may be set to 0.4 ° C.

Meanwhile, the seawater ice slurry ice making system 10 using supercooling according to the present invention is configured to further include a heater controller 51.

First, the heater controller 51, when the temperature of the seawater at the output side of the preheater 25 measured by the third temperature sensor T3 is less than a preset reference freezing temperature, the temperature measured by the second temperature sensor T2 The heat generation amount of the heater 26 is controlled to increase so that the temperature of the seawater at the input side of the supercooler 45 is higher than the temperature of the seawater at the output side of the preheater 25 by the reference rising temperature.

At this time, the reference freezing temperature may be set to -0.5 ° C, which is the freezing temperature of seawater having a salinity of 1%, and the reference rising temperature may be set to 0.5 ° C.

At this time, the reference freezing temperature may vary according to the salinity of seawater between -2 ° C. and 0 ° C. or lower. In addition, the temperature of the seawater at the outlet of the heater 26 may be set to be maintained at a constant temperature from 0.1 ° C to 2 ° C higher than the temperature of the seawater at the inlet of the heater 26 .

The seawater ice slurry ice making system 10 using supercooling according to the present invention continuously produces seawater ice slurry having excellent fluidity using supercooling, and can maintain the freshness of aquatic products through the seawater ice slurry. Through this, there is an effect of improving the commercial value of aquatic products and supplying safe aquatic products more stably.

In addition, the seawater ice slurry ice making system 10 using supercooling according to the present invention precisely controls the temperature of the brine on the output side of the brine cooler 35 in which the brine is cooled, thereby supercooling the seawater inside the supercooler 45 It has the effect of being able to form stably.

In addition, in the seawater ice slurry ice making system 10 using supercooling according to the present invention, the low-temperature fluid discharged from the preheater 25 in the brine refrigerator 35 is heat exchanged with the high-temperature and high-pressure gaseous refrigerant discharged from the condenser 40b energy for the heater 26 for secondarily heating seawater by improving the heating efficiency of the preheater 25 for primarily heating seawater It has the effect of reducing consumption by more than 90%.

As described above, the main technical idea of the present invention is to provide a seawater ice slurry ice making system 10 using supercooling, and the embodiment described above with reference to the drawings is only one embodiment, and the present invention The true scope of rights will be based on the scope of the patent claims, but will also extend to equivalent embodiments that may exist in various ways.

10: Seawater ice slurry ice making system using supercooling
15: ice storage unit 15a: ice storage tank
15b: agitator motor 15c: agitator
15d: slurry pump 15e: controller
20: seawater supply unit 20a: tap water inlet unit
20b: seawater inlet 20c: salinity controller
20d: salinity meter 20e: electric valve
20e1: first opening/closing unit 20e2: second opening/closing unit
20f: concentration controller 20g: water level gauge
20h: water level controller 21: seawater circulation pump
25: preheating heater 26: heater
30: microfilter 35: brine freezer
35a: brine tank 35b: brine pump
35c: brine pump controller 35d: brine heater
35e: brine heater controller 40a: compressor
40b: condenser 40c: receiver
40d: filter dryer 40e: expansion valve
40f: evaporator 40g: gas-liquid separator
40h: heat storage tank 40i: hot water circulation pump
40j: hot water controller 45: supercooler
46: supercooler 46a: ultrasonic generator
50: sensor unit T1: first temperature sensor
T2: 2nd temperature sensor T3: 3rd temperature sensor
T4: 4th temperature sensor T5: 5th temperature sensor
T6: 6th temperature sensor TH: upper temperature sensor
TM: Central temperature sensor TL: Bottom temperature sensor
51: heater controller

Claims (6)

In the seawater ice slurry ice making system 10 using supercooling for producing seawater ice slurry using supercooling,
The seawater ice slurry ice making system 10 using the supercooling is
an ice storage unit 15 accommodating ice and seawater included in the seawater ice slurry;
A seawater supply unit 20 for supplying seawater having a preset standard salinity to the ice storage unit 15;
a preheater 25 connected to the ice storage unit 15 and primarily heating the seawater supplied from the ice storage unit 15 to melt ice particles included in the seawater;
a seawater circulation pump 21 provided between the ice storage unit 15 and the preheater 25 to supply seawater accommodated in the ice storage unit 15 to the preheater 25;
a heater 26 connected to the preheater 25 to secondarily heat the seawater supplied from the preheater 25 to melt ice particles included in the seawater;
a microfilter 30 connected to the heater 26 and filtering foreign substances included in the seawater supplied from the heater 26 and ice particles not yet removed by the heater 26;
A brine freezer 35 for cooling the brine to a preset reference brine temperature;
It is connected to the brine cooler 35 and the microfilter 30, respectively, and heat-exchanges the seawater supplied from the microfilter 30 with the brine supplied from the brine cooler 35, having a preset reference supercooling temperature A supercooler 45 that converts supercooled seawater into supercooled seawater;
A supercooling eliminator 46 connected to the supercooler 45, relieving the supercooled state of the supercooled seawater supplied from the supercooler 45, generating seawater ice slurry, and then supplying it to the ice storage unit 15 ); and
Including; sensor unit 50 for measuring the temperature of seawater or brine,
The sensor unit 50 is
A first temperature sensor (T1) provided between the seawater circulation pump 21 and the preheater 25 to measure the temperature of the seawater at the input side of the preheater 25;
a second temperature sensor (T2) provided between the microfilter 30 and the supercooler 45 to measure the temperature of the seawater at the input side of the supercooler 45;
a third temperature sensor (T3) provided between the preheater 25 and the heater 26 to measure the temperature of the seawater on the output side of the preheater 25;
a fourth temperature sensor (T4) provided between the supercooler 45 and the supercooler eliminator 46 to measure the temperature of the supercooled seawater at the output side of the supercooler 45;
a fifth temperature sensor (T5) provided between the supercooling eliminator 46 and the ice storage part 15 to measure the temperature of the seawater ice slurry on the output side of the supercooling eliminator 46; and
A sixth temperature sensor (T6) provided between the output side of the brine cooler 35 and the supercooler 45 to measure the temperature of the brine on the input side of the supercooler 45; including,
The ice storage part 15 is
an ice storage tank (15a) in which the seawater ice slurry supplied from the supercooler 46 is separated into ice and seawater by a difference in specific gravity;
A stirrer motor (15b) rotated by electric power;
an agitator (15c) rotated by the agitator motor (15b) to mix ice and seawater stored in the ice storage tank (15a);
a slurry pump (15d) for supplying the seawater ice slurry stored in the ice storage tank (15a) to a place of use; and
When the ice filling rate of the seawater ice slurry accommodated in the ice storage tank 15a reaches a preset reference ice filling rate, the agitator motor 15b allows the ice and seawater contained in the storage tank 15a to be mixed. ); a controller (15e) for controlling to be driven;
The controller 15e is
When the slurry pump 15d is stopped, the agitator motor 15b is controlled to rotate at a preset first rotation speed,
When the slurry pump 15d is driven, the agitator motor 15b is controlled to rotate at a preset second rotation speed,
The second rotational speed is
It is set higher than the first rotational speed,
The seawater supply unit 20
a tap water inlet 20a through which tap water flows;
Sea water inlet portion (20b) into which sea water is introduced;
An electric valve connected to the tap water inlet 20a and the seawater inlet 20b, respectively, to control whether tap water flowing in from the tap water inlet 20a or seawater flowing in from the seawater inlet 20b is supplied. (20e);
A salinity controller 20c connected to the motorized valve 20e and mixing the tap water introduced from the tap water inlet 20a and the seawater introduced from the seawater inlet 20b;
A salinity meter (20d) for measuring the salinity of the seawater accommodated in the salinity controller (20c); and
Concentration controller (20f) for controlling the motorized valve (20e) according to the salinity of the seawater measured by the salinity meter (20d); including,
The motorized valve 20e is
a first opening/closing portion 20e1 connected to the tap water inlet 20a and formed to open and close to supply or block tap water; and
A second opening and closing portion 20e2 connected to the seawater inlet 20b and formed to open and close to supply or block seawater; includes,
The concentration controller 20f is
When the salinity of the seawater measured by the salinity meter 20d exceeds the reference salinity, the first opening and closing part 20e1 is opened until the salinity of the seawater accommodated in the salinity controller 20c descends to the reference salinity, , Control the second opening and closing portion 20e2 to be closed,
When the salinity of the seawater measured by the salinity meter 20d is less than the reference salinity, the second opening and closing part 20e2 is opened until the salinity of the seawater accommodated in the salinity controller 20c rises to the reference salinity, , Control the first opening and closing portion 20e1 to be closed,
The salinity controller 20c is
The seawater adjusted to the standard salinity by the concentration controller 20f is supplied to the ice storage tank 15a,
The seawater supply unit 20
a water level gauge (20g) for measuring the level of seawater accommodated in the ice storage tank (15a); and
A water level controller 20h for controlling the seawater circulation pump 21 according to the level of seawater measured by the water level gauge 20g; further comprising,
The water level controller 20h
When the level of seawater measured by the water level gauge 20g is higher than the preset low level, the seawater circulation pump 21 is driven so that the seawater stored in the ice storage tank 15a can be supplied to the preheater 25. control as much as possible,
The brine freezer 35 is
A brine tank 35a connected to the supercooler 45 and containing cooled brine therein;
a brine pump (35b) provided between the brine tank (35a) and the supercooler (45) to supply the brine accommodated in the brine tank (35a) to the supercooler (45);
It is provided on one side of the brine pump (35b) and the temperature of the supercooled seawater at the output side of the supercooler (45) measured by the fourth temperature sensor (T4) is measured by the second temperature sensor (T2) The supercooler A brine pump controller (35c) for controlling the flow rate of the brine discharged from the brine pump (35b) so that it can be maintained lower than the temperature of the seawater at the input side of (45) by a preset set temperature;
a brine heater (35d) provided between the brine tank (35a) and the supercooler (45) to heat the brine supplied to the supercooler (45); and
A brine heater controller ( 35e);
The brine freezer 35 is
a compressor (40a) for compressing the low-temperature, low-pressure gaseous refrigerant into a high-temperature, high-pressure gaseous refrigerant;
a condenser (40b) for condensing the high-temperature and high-pressure gaseous refrigerant discharged from the compressor (40a) into a medium-temperature and high-pressure liquid refrigerant by exchanging heat with external air;
an expansion valve (40e) for reducing the pressure of the medium-temperature and high-pressure liquid refrigerant passing through the condenser (40b) through a fine nozzle provided therein to expand it into a low-temperature and low-pressure liquid refrigerant;
It is connected to the expansion valve 40e, the supercooler 45, and the brine tank 35a, respectively, and the low-temperature and low-pressure liquid refrigerant discharged from the expansion valve 40e is discharged from the supercooler 45. Medium-temperature brine an evaporator (40f) that evaporates into a low-temperature and low-pressure gaseous refrigerant by exchanging heat with the refrigerant;
It is connected to the discharge side of the condenser 40b and the preheater 25, respectively, so that the low-temperature fluid discharged from the preheater 25 exchanges heat with the medium-temperature and high-pressure gas refrigerant discharged from the condenser 40b. a heat storage tank (40h) that converts it into a fluid; and
A hot water circulation pump (40i) connected to the heat storage tank (40h) and the preheater (25) to resupply the high-temperature fluid discharged from the heat storage tank (40h) to the preheater (25);
The preheater 25 is
The seawater supplied from the seawater circulation pump 21 is heat-exchanged with the high-temperature fluid discharged from the hot water circulation pump 40i to heat the seawater,
The brine freezer 35 is
When the temperature of the seawater at the output side of the preheater 25 measured by the third temperature sensor T3 is less than the preset reference freezing temperature, the temperature of the seawater at the output side of the preheater 25 is a preset additional temperature. A hot water controller (40j) controlling the hot water circulation pump (40i) to increase the discharge amount of the fluid until it rises by the amount; further comprising,
The seawater ice slurry ice making system 10 using the supercooling is
When the temperature of the seawater at the output side of the preheater 25 measured by the third temperature sensor T3 is less than the reference freezing temperature, the temperature of the seawater at the input side of the supercooler 45 is Seawater ice slurry ice making system using supercooling, characterized in that it further comprises; a heater controller (51) for controlling the heating value of the heater (26) to increase so that the temperature of the output side seawater is increased by a preset reference temperature. .
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