KR20070110465A - Supercooling apparatus - Google Patents

Abstract

A supercooling apparatus is provided to carry out the non-freezing mode according to the loads of receiving spaces or objects in the receiving spaces for applying proper energy to a cooling unit for the receiving spaces according to the change of the loads, thereby keeping the objects in the unfrozen state. A supercooling apparatus includes a load sensing part(20) for sensing states of receiving spaces(A,B) and states of objects received in the receiving spaces, and an energy setting part such as a voltage generating part(40) for setting the intensity of energy according to a load in the receiving spaces, for example, for generating a voltage for applying electric fields in the receiving spaces. An energy generating part such as an electrode part(50) generates energy of the predetermined size for applying the generated energy to the receiving space, so that the electrode part generates the electric fields by the generated voltage. A cooling part such as a cooling cycle(30) cools the receiving space to keep the objects received in the receiving spaces in the non-frozen state below a phase change temperature.

Description

Supercooling Unit {SUPERCOOLING APPARATUS}

BRIEF DESCRIPTION OF THE DRAWINGS It is a figure which shows embodiment of the thawing and freshness holding | maintenance apparatus by a prior art.

FIG. 2 is a circuit diagram showing the circuit configuration of the high voltage generator 3 of FIG.

3 is a block diagram of a supercooling apparatus according to the present invention.

4a and 4b are embodiments of the subcooling apparatus according to the present invention.

5a and 5b are graphs of the supercooling phenomenon in the subcooling apparatus according to the present invention.

6A and 6B are correlation graphs between power and freezing temperature in the simplified supercooling apparatus according to the present invention.

7A to 7C are voltage and frequency relationship curves for maintaining a freezing state according to the degree of load.

<Description of the symbols for the main parts of the drawings>

20: load detection unit 30: refrigeration cycle

40: voltage generator 50: electrode

90: micom

The present invention relates to a supercooling apparatus, and more particularly, to a supercooling apparatus for storing an article in a freezing state by applying an electric field by a high frequency voltage according to the load degree of the article.

BACKGROUND ART Conventionally, an electrostatic field atmosphere is created in a refrigerator, and thawing of meat and fish in the refrigerator is performed at a negative temperature. In addition to meat and fish, freshness of fruits is maintained.

This technique uses a supercooling phenomenon, which refers to a phenomenon in which the melt or solid does not change even when the melt or solid is cooled to below the phase transition temperature at equilibrium.

Such a technique includes the electrostatic field treatment method, the electrostatic field treatment device, and electrodes used in them.

1 is a view showing an embodiment of a thawing and freshness holding device according to the prior art, wherein the cold storage 1 is constituted by a heat insulator 2 and an outer wall 5, and the internal temperature control mechanism (not shown). Is installed. The metal shelf 7 installed in the interior of the storehouse has a two-stage structure, and on each stage, objects for thawing or freshness maintenance and ripening of vegetables, meat and fish are mounted. The metal shelf 7 is insulated from the bottom of the furnace by the insulator 9. The high voltage generator 3 can generate direct current and alternating voltage up to 0 to 5000 V, and the inside of the heat insulating material 2 is covered with an insulating plate 2a such as vinyl chloride. The high voltage cable 4 for outputting the voltage of the high voltage generator 3 is connected to the metal shelf 7 through the outer wall 5 and the heat insulator 2.

When the door 6 provided on the front side of the cold storage 1 is opened, the safety switch 13 (refer FIG. 2) which is not shown in figure is turned off, and the output of the high voltage generator 3 is interrupted | blocked.

2 is a circuit diagram showing the circuit configuration of the high voltage generator 3. AC 100V is supplied to the primary side of the voltage regulating transformer 15. Reference numeral 11 denotes a power supply lamp, and reference numeral 19 denotes a lamp indicating an operating state. The relay 14 operates when the above-mentioned door 6 is closed and the safety switch 13 is turned on. This state is indicated by the relay operation lamp 12. The relay contact ( 14a, 14b, and 14c are closed, and an AC 100V power source is applied to the primary side of the voltage regulating transformer 15.

The applied voltage is adjusted by the adjusting knob 15a on the secondary side of the voltage adjusting transformer 15, and the adjusted voltage value is displayed on the voltmeter. The adjusting knob 15a is connected to the primary side of the secondary boosting transformer 17 of the voltage adjusting transformer 15. In this boosting transformer 17, the boosting voltage is boosted at a ratio of 1:50, for example. When a voltage of 60V is applied, it is stepped up to 3000V.

_One end O ₁ of the secondary side output of the boosting transformer 17 is connected to the metal shelf 7 insulated from the cold storage via the high voltage cable 4, and the other end O _{2 of the} output is earthed. Moreover, since the outer wall 5 is earthed, even if the user of the cold storage 1 contacts the outer wall of the cold storage, there is no electric shock. In addition, if the metal shelf 7 is exposed in the furnace in FIG. 1, since the metal shelf 7 needs to be kept insulated in the furnace, it is necessary to separate it from the walls of the furnace (air insulates). . In addition, when the object 8 protrudes from the metal shelf 7 and contacts the inner wall, current flows to the ground through the high wall. Therefore, when the insulating plate 2a is attached to the inner wall, the drop of applied voltage is prevented. And even if the said metal shelf 7 is coat | covered with vinyl chloride material etc. without exposing in the inside, the whole inside becomes an electric field atmosphere.

First, the cold storage 1 according to the prior art controls only the magnitude of the voltage applied to the metal shelf 7 so that the supercooling is performed on the food, and by such adjustment, supercooling is caused even at -5 ° C. It prevents freezing. In the case where only the magnitude of the voltage is changed, the minimum temperature at which the subcooling is performed in the prior art is -5 ° C, and the subcooling cannot be performed at a lower temperature.

An object of the present invention is to provide a supercooling device to perform the freezing mode according to the load degree of the storage space or the object.

In addition, an object of the present invention is to provide a subcooling device that can stably maintain a freezing state by applying appropriate energy in response to a variable state of the storage space.

In addition, an object of the present invention is to provide a supercooling device to control the freezing mode according to the energy size or load degree desired by the user.

The supercooling device of the present invention comprises an energy setting unit for setting the amount of energy according to the degree of load in the storage space for accommodating the object, an energy generator for generating energy of the set size and applying it to the storage space, and cooling the storage space. It is provided with a cooling part, and stores a thing in a freezing state below phase transition temperature.

In addition, the load degree preferably includes at least one of the volume of the storage space, the amount, type and state of the storage space, and the temperature of the storage space.

In addition, the energy setting unit preferably sets the amount of energy in proportion to the volume of the storage space or the amount of the storage.

In addition, the energy setting unit preferably sets at least one or more of the magnitude of the frequency or the magnitude of the voltage in proportion to the volume of the storage space or the amount of the storage.

The energy setting unit may select and set the magnitude of the voltage or the magnitude of the frequency included in the preset voltage setting region.

In addition, the energy generating unit preferably generates and applies an electric field.

In addition, the present invention, the supercooling device is provided with an energy generating unit for generating the energy of the size set according to the degree of load of the storage space for accommodating the object to the storage space, and a cooling unit for cooling the storage space, the phase change of the object; Store freeze below temperature.

In the following, the invention is explained in detail on the basis of the embodiments of the invention and the accompanying drawings. However, the scope of the present invention is not limited by the following embodiments and drawings, and the scope of the present invention will be limited only by the contents described in the claims below.

3 is a configuration diagram of a supercooling apparatus according to the present invention, Figures 4a and 4b are embodiments of the subcooling apparatus according to the present invention.

The supercooling apparatus 100 includes a load sensing unit 20 for detecting a state of the storage spaces A and B, a state of an object (not shown) stored in the storage spaces A and B, and a storage space A. , A refrigeration cycle 30 for cooling B), a voltage generator 40 generating a voltage to apply an electric field in the storage spaces A and B, and an electrode part receiving the generated voltage to generate an electric field ( 50, the door detecting unit 60 for detecting the opening / closing of the door 120, the input unit 70 for receiving the degree of cooling from the user, performing the non-freezing mode, and the like. The display unit 80 displaying the operation state and the microcomputer 90 performing the freezing mode using the supercooling phenomenon while performing the freezing or refrigerating control of the subcooling apparatus 100. However, although a power supply unit (not shown) for supplying power to the above-described elements is naturally provided, such a power supply is a technology clearly recognized by those skilled in the art to which the present invention pertains, and thus description thereof is omitted.

In detail, the load detector 20 detects or stores a state of the storage spaces A and B and a state of the storage body (liquid state or solid state) stored in the storage spaces A and B, and stores the microcomputer 90. ). The load detector 20 stores information about the volume of the storage spaces A and B in the state of the storage spaces A and B, or senses the temperature of the storage spaces A or B. It may be a thermometer or a hardness meter, an ammeter or a voltmeter or a weight meter or an optical sensor (or a laser sensor) or a pressure sensor for checking whether the object is accommodated in the storage spaces A and B. In particular, the load sensing unit 20 may be an ammeter or a voltmeter, and when the storage spaces (A, B) are empty, and when there is an enclosure, the overall resistance value of the resistor through which the electric field flows is changed. Depending on the value, it can be checked whether or not it is stored. In addition, the microcomputer 90 may check the amount of the object and the water content of the object according to the resistance value from the load sensing unit 20, thereby identifying the kind of the object having the identified water content.

Next, the refrigeration cycle 30 is divided into inter-cooling and direct cooling according to the method for cooling the stored object. The embodiment of FIG. 4A is an intercooled subcooling apparatus, and the embodiment of FIG. 4B is a direct cooling subcooling apparatus, which is described in detail below.

In addition, the voltage generator 40 generates an AC voltage according to a predetermined size and frequency. The voltage generator 40 may generate at least one of a magnitude of a voltage and a frequency of the voltage to generate an AC voltage. In particular, the voltage generator 40 applies an AC voltage corresponding to the set value (voltage magnitude, voltage frequency, etc.) from the microcomputer 90 to the electrode unit 50, and thus the electric field is stored in the storage space (A). , B). The voltage generator 40 in the present invention can vary the magnitude of the voltage within the range of 500V ~ 15kV by varying the frequency. In addition, the voltage generator 40 sets the frequency of the voltage in a high frequency range of 1 to 500 kHz.

The electrode unit 50 is a means for converting an alternating voltage from the voltage generating unit 40 into an electric field and applying it to the storage spaces A and B. The electrode unit 50 is usually made of a plate or conductive wire made of a material such as copper or platinum.

Since the electric field applied to the storage spaces A and B or the object by the electrode unit 50 is due to a high frequency AC voltage, the polarity thereof changes with frequency. Due to this electric field, water molecules composed of oxygen (O) with negative polarity and hydrogen (H) with positive polarity are continuously vibrated, rotated, and translated. The liquid phase is maintained even at a temperature below the phase transition temperature.

The voltage generator 40 uses an AC voltage having a frequency characteristic of such a high frequency band. For example, in the case of a voltage having a frequency of 1 kHz or less or a size of 500 V or less, the electrode part 50 is the case 110. Even if it does not penetrate the insulating material in the) or induces rotation of water molecules in the enclosure at such a frequency, the speed and vibration degree are low, which is why the transition from the phase transition temperature to the solid is caused. In addition, a voltage of 15 kV or more may cause a dielectric breakdown problem of the supercooling device 100, and an alternating voltage of 500 kHz or more does not generate an electric field in the electrode unit 50, but radiates in the form of radio waves, or Since there is a problem that the change rate is excessive and the motion of the water molecules cannot follow the speed, the AC voltage having the magnitude range and the frequency range described above is generated and used in the present invention. These voltage and frequency domains are described below.

The door detection unit 60 stops the operation of the voltage generator 40 according to the opening of the door 120 that opens and closes the storage spaces A and B. The door detection unit 60 notifies the microcomputer 90 of the opening of the door 120. ) May perform the stop operation, or may be stopped by shorting the power applied to the voltage generator 40. 4A and 4B, the door detecting unit 60 may detect opening and closing of the storage space stored in the non-freezing mode, and the storage space for performing the non-freezing mode is formed, such as a vegetable compartment or a special cooling chamber of a general refrigerator. It may be operated by detecting the opening and closing of the door of the device.

Input unit 70, in addition to the temperature setting for the general refrigeration and refrigeration control, the selection of the service type (flake ice, water, etc.) of the dispenser, the user selects to perform the freezing mode for the storage space (A, B) or the object This is the means by which you can enter. In addition, the user may input the object information such as the type, state, quantity (volume, mass, weight, etc.) of the object through the input unit 70. The input unit 70 may be a bar code reader or an RFID reader, and may provide the microcomputer 90 with the information of the contents of the reading.

In addition, the input unit 70 allows the user to input the amount of energy applied to the storage space or the object in the freezing mode. The energy level may be input in a plurality of sporadic steps such as 'up', 'middle', 'low', or the like, and may receive a natural number between 0 and 100 for easy recognition of the user. have. The input unit 70 applies the input value of the input energy level to the microcomputer 90.

The display unit 80 may basically perform a freezing and refrigerating temperature display, a service type display of the dispenser, and may display that a freezing mode is currently being performed.

In addition, the display unit 80 displays a user interface (for example, a menu selection screen and an energy size setting screen) for allowing the user to set the energy level, so that the user performs the setting of the energy level through the input unit 70. Do it.

The microcomputer 90 performs basic refrigeration and freezing control, and allows the freezing mode according to the present invention to be performed.

The microcomputer 90 may allow the voltage generator 40 to generate such an AC voltage and apply it to the electrode unit 50 according to an AC voltage having a set frequency and magnitude. In this case, the microcomputer 90 has a frequency and magnitude corresponding to the load degree while the load level (for example, resistance value, current value, etc.) from the load sensing unit 20 is fixed to a specific value. This is the case to generate AC voltage. In this case, when the kind of objects to be stored in the storage spaces (A, B) is predetermined (for example, meat storage space, vegetable storage space, fruit storage space, wine storage space, etc.) or storage space (A, Even when storing information about the volume of B) (since the storage spaces A and B are constant, the volume of the storage spaces A and B remains largely constant), the energy having a fixed size to a specific value ( Voltage and frequency) are applied. That is, when the subcooling apparatus 100 includes a plurality of storage spaces, when the volume of the storage spaces is different, electric fields having energy of different sizes may be generated and applied to each storage space. For example, energy of a magnitude proportional to the volume of the storage space is applied.

In addition, the microcomputer 90 obtains a situation of the storage space (A, B) or the storage from the input unit 70 or the load detection unit 20, the AC having a frequency and magnitude corresponding to the obtained information or load degree By generating a voltage, it can be responsible for performing the artificial freezing mode.

In addition, when the user inputs the energy of the magnitude input through the input unit 70, that is, the amount of energy to be applied, the microcomputer 90 generates and applies energy corresponding to the value. In addition, the microcomputer 90 determines the degree of load according to the degree of the object applied through the input unit 70, and energy of the size corresponding to the determined degree of load is generated in the storage spaces A and B or the object. To be approved.

In addition, while the microcomputer 90 performs the freezing mode, the freezing temperature at which the freezing mode is performed may be set or changed. This setting or variable can be performed by the microcomputer 90 from the relationship between the amount of heat during cooling (the amount of heat to be taken away by the store) and the amount of heat applied by the electric field (the amount of heat supplied to the store).

4a and 4b are embodiments of the subcooling apparatus according to the present invention. 4A is a cross-sectional view of the intercooled subcooling apparatus, and FIG. 4B is a cross-sectional view of the direct cooling subcooling apparatus.

The intercooled supercooling device opens and closes an open one side of the case 110 and a case 110 having a shelf 130 on which one surface is opened to form the storage space A therein, and partially partitions the storage space A. The door 120 is made. The refrigeration cycle 30 of the intercooled supercooling apparatus includes a compressor 32 for compressing a refrigerant, an evaporator 33 for generating cold air (indicated by an arrow) for cooling the storage space A or the stored object, and the cold air generated in this way. Fan 34 forcibly flowing, an inlet duct 36 for introducing cold air into the storage space A, and a discharge duct 38 for guiding cold air passing through the storage space A to the evaporator 33. ) In addition, the freezing cycle 30 may include a condenser, a dryer, an expansion device, and the like, which are not shown.

Electrode portions 50a and 50b are formed between the inner surfaces 112a and 112c facing the storage space A and the outer surface of the case 110, and each of the electrode portions 50a and 50b faces the storage space A. It is formed, so that the electric field can be applied to the entire storage space (A). In addition, the storage space A is spaced apart from the ends of the electrode portions 50a and 50b inwardly or in the center direction of the electrode portions 50a and 50b by a predetermined interval so that a uniform electric field is stored in the storage space A or the storage space. Allow to be applied to water.

In addition, the inlet duct 36 and the discharge duct 38 described above are formed on the inner surface 112b of the case 110. In addition, the surface of the inner surface (112a, 112b, 112c) of the case 110 is made of a hydrophobic material, so that the surface tension of water, such as water is reduced to prevent freezing during the non-freezing mode. Of course, the outer surface and the inner surface (112a, 112b, 112c) of the case 110 is made of an insulating material, so that the user is not electric shock from the electrode portions (50a, 50b) and at the same time the objects are inner surface (112a, 112b, The electrical contact with the electrode portions 50a and 50b through the 112c is prevented.

Next, the case 110, the door 120, and the shelf 130 of the direct cooling subcooling apparatus of FIG. 4B are the same as the intercooling subcooling apparatus of FIG. 4A, and the inner surfaces 114a, 114b, and 114c of the case 110 are cases. Compared to (112a, 112b, 112c), the same except for the inlet duct 36 and the discharge duct 38.

The refrigeration cycle 30 of the direct-cooling subcooling apparatus of FIG. 4B is installed in the case 110 adjacent to the compressor 32 compressing the refrigerant and the inner surfaces 114a, 114b and 114c of the housing space B, and thus the refrigerant. It consists of an evaporator 39 to evaporate. However, the direct-cooling refrigeration cycle 30 is configured to include a condenser (not shown) and expansion valve (not shown).

In particular, the electrode portions 50c and 50d are inserted between the evaporator 39 and the case 110 to prevent the cold air from being blocked by the evaporator 39.

5a and 5b are graphs of the supercooling phenomenon in the subcooling apparatus according to the present invention.

FIG. 5A is a diagram of experimental structures and conditions for FIG. 5B. As shown, the storage space (S1) is formed in the case 111, 0.1L of distilled water is contained in the storage space (S1), the electrodes 50e, 50f are symmetrically toward the storage space (S1). It is inserted into the side wall of the case 111 to be positioned. In addition, the electrode surfaces of the electrodes 50e and 50f facing the storage space S1 are formed wider than the surface of the storage space S1. The interval between these electrodes 50e and 50f is 20 mm. The case 111 is made of an acrylic material, and the case 111 is stored and cooled in a storage space (a refrigerating device which is a space without an additional electric field generating device other than the electrodes 50e and 50f) to which cold air is uniformly supplied.

At this time, the microcomputer 90 is a case where the voltage generator 40 applies 0.91 kV (6.76 mA) and an AC voltage of 20 kHz to the electrode unit 50, the temperature of the storage space is about -7 ℃. It can be seen from the subcooling graph of FIG. 5B that the subcooling apparatus 100 according to the present invention has a subcooling even at about -6.5 ° C. which is below the phase transition temperature, thereby maintaining a water freezing state.

6A and 6B are correlation graphs between power and freezing temperature in the simplified supercooling apparatus according to the present invention. 6A and 6B are applied to the same experimental structure as that of FIG. 5A, and the storage temperature (control temperature), that is, the internal temperature of the inside of the storage space in which the case 111 is housed, is fixedly controlled to -6 ° C. In this case, the microcomputer 90 sets and applies a plurality of power energy amounts applied to the voltage generator 40, and measures the change in the freezing temperature accordingly.

6A are graphs of freezing temperatures of water supplied with different amounts of power energy. As shown in FIG. 6A, the baseline O, to which no power energy is supplied, remains freeze to -5 ° C. by cooling and causes a phase transition to a frozen state 3 hours before cooling.

In addition, since the amount of energy applied to the first energy ray I (1.38W) is considerably large, the water is kept at almost 0 ° C even if the water is cooled at a phase transition temperature (1 atmosphere of 0 ° C) so that the supercooling phenomenon occurs. It doesn't happen at all.

The second energy ray II (0.98 W) maintains a freezing state due to the supercooling phenomenon, and the freezing temperature at that time is maintained at -3 to -3.5 ° C.

The third energy ray (III) (0.91 W) maintains a freezing state due to the supercooling phenomenon, and the freezing temperature at that time is maintained at -4 to -5 ° C.

The fourth energy ray IV (0.62W) is maintained in a freezing state due to the supercooling phenomenon, and the freezing temperature at that time is maintained at -5.5 to -5.8 ° C.

The fifth energy ray V (0.36W) does not reach the supercooled state and is frozen (phase shifted).

FIG. 6B is a graph showing the correlation between the first to fifth energy rays of FIG. 6A. As shown, it can be seen that in a state where constant cold air is supplied, the amount of energy applied to the water, which is an article, and the non-freezing temperature of the water, which is an article, have a proportional relationship. That is, the greater the amount of energy applied to the package, the higher the freezing temperature. The smaller the amount of energy applied to the package, the lower the freezing temperature. However, when determining such an amount of energy, if the amount of energy is too small, as described above, the supercooled state cannot be adjusted because it does not cause the movement of water molecules, and thus the same result as the fifth energy line is obtained.

In addition, the freezing temperature according to the experiment is determined according to the amount of energy (size of energy) applied when the storage temperature (indoor temperature, high temperature) is -6 ℃, the energy applied accordingly when the storage temperature is different The amount must also be changed. Therefore, when the storage temperature is constant, the microcomputer 90 may store only correlation information between a simple amount of energy and a non-freezing temperature. Otherwise, when the storage temperature is adjusted or changed, the controlled storage temperature is considered. Correlation information between quantities and freezing temperatures shall be stored.

7A to 7C are voltage and frequency relationship curves for maintaining a freezing state according to the degree of load. Each curve is experimentally freeze-free due to the supercooling phenomenon when the object is stored in a plastic container and is stored in a supercooling device as shown in FIGS. 4A and 4B, or in a case 111 as shown in FIG. The voltage and frequency domains preserved in the state are respectively shown.

FIG. 7A illustrates a case in which the package is water, and as the amount of water increases to 0.1 L, 2 L, 5 L, and 10 L, the motion of water molecules must be maintained, so that voltage and frequency must be set within each region. The state was maintained. That is, out of the load of the object or the storage space, energy of a size proportional to the amount of the storage object or the volume of the storage space (of course, the volume of the storage space also increases to accommodate a large amount of the storage space) should be applied. Such a change in energy may be performed by at least one of a change in voltage magnitude and a change in frequency magnitude.

FIG. 7B illustrates a case in which the package is a vegetable, and illustrates a voltage and frequency region in which a freezing state is maintained under the same condition as that of FIG. 7A. As shown in Figure 7b, when the amount of vegetables is 100g, freezing storage was made in the voltage and frequency regions shown.

FIG. 7C illustrates a case in which the package is meat, and illustrates a voltage and frequency region in which a freezing state is maintained under the same condition as that of FIG. 7A. As shown in FIG. 7C, as the amount of meat increased to 50 g, 200 g, and 3 kg, the freezing state was maintained only when the voltage and frequency were set in each region.

As shown in Figs. 7A to 7C, even in the case of the same amount (mass, weight) of the object, the amount of energy to be applied to maintain the same freezing temperature varies depending on the type of the object. That is, the microcomputer 90 needs to recognize the type of the object as the load degree together with the amount of the object, and select and set the energy size accordingly.

In addition, even in the same amount, the state of the object is regarded as the load degree in consideration of the state of the object (for example, a liquid state such as water, a solid state such as vegetables, and a solid state such as meat) together with the kind of the object. Thus, energy of a corresponding magnitude is applied.

In addition, the microcomputer 90 may perform control according to the amount of energy by the user from the input unit 70. In the state in which the user limits the energy level to stabilize the supercooled state of the enclosure, the user may set the energy level. You can also choose. For example, for the supercooled state of a particular enclosure, if the energy magnitude between C and D is possible, depending on the current cooling temperature and the quantity of enclosure, the choice of upper, middle and lower should only be made within this C-D range. It may be limited.

Since the load varies depending on the quantity, type, and state of the objects, in setting the voltage and frequency regions for maintaining the non-freezing state of the objects, considering the FIGS. 7A to 7C, the setting region (region VFm) of the voltage and frequency is 500V. Within the range of the voltage of ˜15 kV and the frequency of 1 kHz to 500 kHz, even if there are variations depending on the type or amount of the object, freezing storage of the object is possible. In addition, the more optimal voltage and frequency setting area (VFo) is within the range of 600V to 7kV and the frequency of 5kHz to 200kHz, it is possible to freeze and store most of the objects regardless of the type or quantity of the objects. .

The present invention has an effect that can be performed by optimizing the freezing mode by performing the freezing mode according to the load degree of the storage space or the object.

In addition, the present invention has the effect of maintaining a freezing state stably by applying the appropriate energy in response to the variable state of the storage space.

In addition, the present invention has an effect that the control of the freezing mode is made according to the energy size or load degree desired by the user.

Claims (11)

An energy setting unit for setting the amount of energy according to the degree of load in the storage space for accommodating the objects; An energy generation unit generating energy of a predetermined size and applying the energy to the storage space; And a cooling unit for cooling the storage space, wherein the storage is stored in a freezing state at or below the phase transition temperature. The method of claim 1, The degree of load includes at least one of the volume of the storage space, the amount, type and condition of the storage space, and the temperature of the storage space. The method of claim 2, The energy setting unit sets the amount of energy in proportion to the volume of the storage space or the amount of the storage. The method of claim 2, And the energy setting unit sets at least one of the magnitude of the frequency and the magnitude of the voltage in proportion to the volume of the storage space or the amount of the storage. The method of claim 4, wherein The energy setting unit selects and sets the magnitude of the voltage or the magnitude of the frequency included in the preset voltage setting region. The method according to any one of claims 1 to 5, The energy generating unit generates and applies an electric field. An energy generation unit generating energy of a predetermined size according to the load degree of the storage space accommodating the storage object and applying the energy to the storage space; And a cooling unit for cooling the storage space, wherein the storage is stored in a freezing state at or below the phase transition temperature. The supercooling apparatus of claim 7, wherein the supercooling apparatus includes a storage unit configured to store the amount of energy set according to the degree of load. The method of claim 7, wherein The supercooling device comprises a control unit for detecting the degree of load, and setting the amount of energy in accordance with the detected load degree. The method of claim 7, wherein The supercooling device has an input unit for receiving a setting of the amount of energy from the user, the energy generating unit generates the energy of the set size according to the input. The method according to any one of claims 7 to 10, The degree of load includes at least one of the volume of the storage space, the amount, type and condition of the storage space, and the temperature of the storage space.

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