KR20100082261A - Supercooling system - Google Patents

Abstract

PURPOSE: A supercooling system is provided to trustfully prevent freezing nucleus from created and to easily control the supercooling temperature of the stored goods. CONSTITUTION: A super cooling system comprises: a cooling unit(100) which comprises a storage, a cooling member which cools the storage, and a main control unit(144) which maintains the temperature of the storage inside at least under the maximum ice crystal generating temperature by controlling the cooling member; and a super cooling unit(200) which includes an independence storage room which includes a receiving space and is installed in the storage, a temperature sensing unit which senses the temperature of the independence storage room, a temperature controller which controls the indoor temperature with being installed in the independence storage room, and a sub controller which stores stored goods in the independence storage room in one state among a supercooling state or a freezing state by controlling the temperature controller based on the sensing temperature from the temperature sensing unit.

Description

Super Cooling System {SUPERCOOLING SYSTEM}

The present invention relates to a subcooling system, and more particularly, to a subcooling system located in a cooling space to independently maintain an enclosure in a subcooling state.

Subcooling means a phenomenon that no change occurs even when the melt or solid is cooled to below the phase transition temperature at equilibrium. Each substance has a stable state corresponding to the temperature at that time, so that the temperature can be gradually changed so that members of the substance can keep up with the temperature change while maintaining the stable state at each temperature. However, if the temperature suddenly changes, the member cannot afford to change to the stable state according to each temperature, so that the state remains stable at the starting point temperature, or a portion thereof changes to the state at the end point temperature.

For example, if water is gradually cooled, it will not temporarily solidify even if it reaches a temperature of 0 ° C or lower. However, when the object is in the supercooled state, it becomes a kind of metastable state, and the unstable equilibrium state is broken even by a slight stimulus, and it is easy to move to a more stable state. That is, when a small piece of material is added to the supercooled liquid or the liquid is suddenly shaken, the liquid starts to solidify immediately and the temperature of the liquid rises to the freezing point, thereby maintaining a stable equilibrium at that temperature.

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, electric shock will not occur. 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 (the 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 a vinyl chloride material etc. without exposing in the inside, the whole inside becomes an electric field atmosphere.

In the prior art, since an electric field or a magnetic field is applied to an object to be cooled and stored so that the object enters a supercooled state, a complicated device for generating an electric field or a magnetic field for storage in the supercooled state of the object is provided. High power consumption is required for the generation of such electric or magnetic fields. In addition, such a device for generating an electric field or a magnetic field is additionally provided with a device (for example, an electric field or magnetic field shielding structure, a blocking device, etc.) for the safety of the user when the electric field or the magnetic field is generated, when the electric field or magnetic field is generated due to the high power. Should be.

An object of the present invention is to provide a subcooling system that more reliably prevents the formation of freeze tuberculosis in a supercooled state of an article.

In addition, an object of the present invention is to provide a supercooling system for preventing the formation of freezing tuberculosis and easy control of the supercooling temperature of the package.

Moreover, an object of this invention is to provide the subcooling system which can hold | maintain an object in the supercooling state only by supply of electric power, even in the space which only cooling is performed.

In addition, an object of the present invention is to provide a subcooling system capable of selectively performing a subcooling state control and a refrigeration state control on an object.

It is also an object of the present invention to provide a supercooling system that achieves the convenience of storage of an enclosure and the accurate sensing of the enclosure temperature.

In addition, an object of the present invention is to provide a subcooling system in which a control unit for performing a supercooling state control and a refrigeration state control is separately mounted from a storage space of an article.

The supercooling system of the present invention includes a reservoir for storing an enclosure, cooling means for cooling the reservoir, and a main control unit for controlling the cooling means to receive the external power and maintain the temperature in the reservoir at least below the maximum ice crystal generation temperature. A cooling device, an independent storage room for storing the contents therein and mounted in the storage compartment, a temperature sensing unit for sensing a temperature of the independent storage room, a temperature control unit mounted in the independent storage room, and controlling an internal temperature; The subcooling device includes a sub-control unit which controls the temperature adjusting means based on the sensed temperature from the temperature detecting unit so that the objects in the independent storage room are stored in one of a supercooled state and a frozen state.

In addition, the sub-cooling device is operated by receiving a power source from the main control unit, it is preferable that the sub-control unit to perform the sub-cooling state control and the refrigeration state control for the objects independently to the main control unit.

In addition, it is preferable that the supercooling device additionally performs the ice control at a temperature between the control temperature in the supercooled state and the control temperature in the frozen state.

The subcooling apparatus may further include an input unit capable of acquiring a supercooling control input or a freezing control input or a thin ice control input for an object, and a display unit for displaying a state of a control currently being performed. It is preferable to control the display unit.

In addition, the sub control unit is preferably provided on one side or the upper surface or the front surface of the independent storage room.

In addition, it is preferable that the temperature control means supplies heat to the interior of the independent storage chamber or generates heat so that the upper temperature of the independent storage chamber is maintained higher than the maximum ice crystal generation temperature.

In addition, the temperature control means is preferably to maintain the upper temperature of the independent storage room above the phase transition temperature.

In addition, the temperature adjusting means preferably maintains the lower temperature of the independent storage room or the temperature of the object at a preset supercooling temperature, so that the object is stored in the supercooled state.

In addition, it is preferable that the temperature regulating means includes first and second heat source supply parts formed independently on at least two or more surfaces of the independent storage chamber.

In addition, the temperature sensing unit preferably includes at least one or more temperature sensors mounted on or adjacent the side on which the first or second heat source supply is formed.

In addition, the sub-control unit controls the first and second heat source supply unit, it is preferable to independently control based on the temperature of the temperature sensor formed on the same surface or the temperature sensor mounted adjacently.

In addition, the temperature sensing unit preferably includes a metal medium that is mounted inside the independent storage room and is in contact with the object and transmits the temperature of the object, and a first temperature sensor that senses the temperature transmitted by the metal medium.

In addition, the temperature sensing unit preferably includes a second temperature sensor mounted above the inside of the independent storage compartment.

In addition, the present invention, the supercooling system has an independent cooling device for allowing the inside of the reservoir to be cooled and controlled at least below the maximum ice crystal generation zone temperature, the storage can be accommodated therein, the independent storage room mounted inside the reservoir, and the independent cooling device Independently operating in the operation of supplying heat to the inside of the independent storage room, or generates heat, and includes an independent heating device for storing the storage stored in the independent storage room in one of a supercooled state and a frozen state. .

The present invention has the effect of preventing the formation of freezing tuberculosis more reliably in the supercooled state of the package, and to store the package in the supercooled state stably for a long time.

In addition, the present invention is to prevent the formation of ice tuberculosis, and to facilitate the adjustment of the supercooling temperature of the stored object, there is an effect that can keep the stored object in the desired supercooled state.

In addition, the present invention has the effect of providing the supercooled storage more simply and economically to keep the objects in the supercooled state only by the supply of power, even in the space only cooling.

In addition, the present invention has the effect of allowing the storage of the object in a desired state by selectively performing the supercooling state control and the freezing state control for the object.

In addition, the present invention achieves the convenience of the storage of the object and the accurate detection of the temperature of the object, there is an effect to enable a stable storage of the object.

In addition, the present invention has the effect of implementing the protection of the control unit and the maximization of the storage space by separately mounted to the side control unit for performing the supercooling state control and the freezing state control from the storage space of the object.

In the following, the invention is described in detail by way of examples and the drawings.

3 is a view showing a process in which ice tuberculosis is generated in the liquid being cooled. As shown in FIG. 3, the container C which accommodates the liquid L (or the thing) is cooled in the storage S in which the cooling space was formed.

It is assumed that the cooling temperature of the cooling space is, for example, cooled from room temperature to 0 degrees (phase transition temperature of water) or below the phase transition temperature of the liquid L. When such cooling proceeds, for example, in the case of water, the temperature of the maximum ice crystal formation zone (-1 to -7 ° C) or less of the liquid (L) of water at which the maximum ice crystals are produced at about -1 to -7 ° C It is intended to maintain the supercooled state of water or liquid L (or containment) even at cooling temperatures below the maximum ice crystal generation zone.

Evaporation takes place from the liquid L during this cooling, so that the water vapor W1 flows into the gas (or space) Lg in the vessel C. When the vessel C is closed, due to the vaporized water vapor W1, the gas Cg may be in a supersaturated state.

As the cooling temperature reaches or passes the temperature of the maximum ice crystal generation zone of the liquid L, it is formed as freeze tuberculosis F2 on the inner wall of the container or freeze tuberculosis F1 in the gas Lg. Alternatively, condensation takes place at a portion where the surface Ls of the liquid L and the inner wall of the container C (which substantially coincide with the cooling temperature of the cooling space) are brought into ice and the condensed liquid L is ice crystals. The nucleus F3 may be formed.

For example, when the frozen tuberculosis F1 in the gas Lg descends and penetrates into the liquid L through the surface Ls of the liquid L, the supercooled state of the liquid L is released and the liquid ( A freezing phenomenon is caused in L), and the supercooling of the liquid L is released.

Alternatively, when the frozen tuberculosis F3 comes into contact with the surface Ls of the liquid L, the supercooled state of the liquid L is released, thereby causing a freezing phenomenon in the liquid L. FIG.

As described above, looking at the process of formation of freezing tubers F1 to F3, when the liquid L is stored below the temperature of the maximum ice crystal generation zone of the liquid L, it is evaporated from the liquid L, and the liquid Due to freezing of water vapor on the surface Ls of (L) and freezing at the inner wall of the container C near the surface Ls of the liquid L, the release of the supercooled state of the liquid L is prevented. Is caused.

4 is a view showing a process for preventing the formation of ice tuberculosis applied to the supercooling apparatus according to the present invention.

4 shows energy at least on the surface Ls of the gas Lg or the liquid L so as to prevent the freezing of the water vapor W1 in the gas Lg, ie to maintain the water vapor W1 state continuously. The temperature of the gas Lg or the surface Ls of the liquid L is applied to be higher than the temperature of the maximum ice crystal generation zone of the liquid L. More preferably, the phase transition temperature of the liquid L is equal to or higher than that of the liquid L. . In addition, the temperature of the surface Ls of the liquid L is set to the temperature of the maximum ice crystal generation zone of the liquid L so that the surface Ls of the liquid L does not freeze even if it contacts the inner wall of the container C. More preferably, the phase transition temperature of the liquid L is equal to or higher than that.

As a result, the liquid L in the container C is maintained in the supercooled state at or below the phase transition temperature or below the maximum ice crystal generation temperature of the liquid L.

In addition, when the cooling temperature in the storage S is very low, for example, -20 ° C, the liquid L, which is an object, may be subjected to a supercooling state simply by applying energy only to the upper portion of the container C. Since it may not be able to hold | maintain, it is necessary to supply some energy also to the lower part of the container C. The energy applied to the upper portion of the vessel C is relatively larger than the energy applied to the lower portion of the vessel C, so that the upper temperature of the vessel C can be maintained higher than the phase transition temperature or the temperature of the maximum ice crystal generation zone. . In addition, it is possible to control the temperature in the supercooled state of the liquid (L) by the energy applied to the lower portion of the container (C) and the energy applied to the upper portion of the container (C).

3 and 4 described above, the case of the liquid (L) has been exemplarily described, but even in the case of the case containing the liquid, the fresh long-term storage of the object is possible by continuously supercooling the liquid in the object, By applying the process of the enclosure may be maintained in the supercooled state below the phase transition temperature. Receptacles herein can include meat, vegetables, fruits, other foods, and the like, as well as liquids.

In addition, the energy applied to the present invention may be applied to thermal energy, electric or magnetic energy, ultrasonic energy, light energy and the like.

5 is a schematic configuration diagram of a supercooling apparatus according to the present invention.

The supercooling apparatus of FIG. 5 is mounted in a storage S in which cooling is performed, a case Sr (or an independent storage room) having a storage space therein, and a heating coil mounted inside an upper surface of the case Sr to generate heat. (H1), the temperature sensor (C1) for sensing the temperature of the upper portion of the storage space, the heating coil (H2) is mounted on the inside of the lower surface of the case (Sr) to generate heat, and the lower portion of the storage space ( And a temperature sensor C2 for sensing the temperature of P).

 The supercooling device is installed in the storage S and, as cooling is performed, senses the temperature from the temperature sensor C1 and C2 so that the heating coils H1 and H2 perform the on operation. Thus, heat is supplied to the storage space from the upper and lower portions of the storage space. The amount of heat supplied is adjusted to control the upper portion of the storage space (or the air on the object P) to be higher than the maximum ice crystal generation temperature, more preferably higher than the phase transition temperature.

The positions of the heating coils H1 and H2 of FIG. 5 may be determined to be suitable positions for supplying heat (or energy) to the enclosure P and the storage space, and may be inserted into the side surface of the case Sr. Can be.

FIG. 6 is a graph illustrating a supercooling state of water according to the subcooling apparatus of FIG. 5. The graphs of FIG. 6 are temperature graphs measured with the principle according to FIGS. 4 and 5 applied when the liquid L is water.

As shown in FIG. 6, line I is the cooling temperature curve of the cooling space, and line II is the temperature curve of the gas Lg (air) on the water surface in the vessel C or the case Sr (or the vessel C). ), The upper temperature of the case (Sr)), the line III is the temperature of the lower portion of the container (C) or the case (Sr), the temperature of the outer surface of the container (C) or the case (Sr) is the container (C) or It is substantially the same as the temperature of the water in the case Sr.

As shown, when the cooling temperature is maintained at about −19 to −20 ° C. (see line I), the temperature of the gas Lg on the water surface in the vessel C is about higher than the temperature of the maximum ice crystal generation zone of the water. When maintained at 4-6 ° C, the supercooled state in which the liquid state is maintained stably is maintained for a long time while the temperature of the water in the vessel C is maintained at about -11 ° C, which is equal to or less than the temperature of the maximum ice crystal generation zone of the water. At this time, heat is supplied by the heating coils H1 and H2.

In addition, in FIG. 6, as the cooling proceeds, before the temperature of the water reaches the temperature of the maximum ice crystal formation zone, more preferably, before the phase transition temperature is reached, the gas (Lg) phase on the water surface or on the surface The application of energy to the furnace is started, so that the water enters and maintains the supercooled state more stably.

7 is a configuration diagram of a subcooling system according to the present invention, Figure 8 is a configuration diagram of the subcooling apparatus of FIG.

The subcooling system is composed of a cooling device 100 and a subcooling device 200 mounted in the cooling device 100 and cooled by the cooling device 100.

The cooling device 100 includes a storage for storing the goods, a cooling cycle (ie, cooling means) 110 for cooling the storage, an input unit 120 for receiving a setting command from a user, and the cooling device. A main control unit for controlling the cooling cycle 110 to receive a display unit 130 for displaying a temperature state of the light and an external commercial power source (or other power source) to maintain the temperature in the reservoir at least below the maximum ice crystal generation temperature. 140.

The cooling cycle 110 is divided into a simple cooling type and a direct cooling type according to a method of cooling an object.

The intercooled cooling cycle includes a compressor for compressing a refrigerant, an evaporator for generating cold air for cooling the storage space or a storage object, a fan for forcibly flowing the cold air generated therein, an inlet duct for introducing cold air into the storage space, and a storage space. It consists of a discharge duct to guide the cold air passing through the evaporator. In addition, the intercooled cooling cycle may include a condenser, a dryer, an expansion device, and the like.

The direct cooling cycle consists of a compressor for compressing the refrigerant and an evaporator installed in the case adjacent to the inner surface of the case forming the storage space to evaporate the refrigerant. However, the direct cooling cooling cycle includes a condenser and an expansion valve.

The input unit 120 receives a temperature setting (for example, a refrigerator compartment temperature, a freezer compartment temperature, etc.), an operation command of a supercooling device, a setting of a dispenser function, and the like from a user. For example, a push button, a keyboard, Touch pads and the like would be possible. The operation command of the subcooling device may include, for example, a freezing command, a thin ice command, a subcool command, and the like.

The display unit 130 may basically display an operation performed by the cooling apparatus, for example, a display of the temperature of the storage, a display of the cooling temperature, and an operation state of the present supercooling apparatus. The display unit 130 may be implemented as a lcd display or a led display.

In the present embodiment, the main control unit 140 includes a power supply unit 142 that receives commercial power, and uses the power supply (for example, 5V, 12V, etc.) required for the cooling device 100 and the subcooling device 200. This device performs rectification, smoothing, and transformer. The power supply unit 142 may be included in the main control unit 140 or may be provided as a separate element. The power supply unit 142 is connected by the subcooling device 200 and the power line PL, and supplies necessary power to the subcooling device 200.

The main controller 140 controls the cooling cycle 110, the input unit 120, and the display unit 130 so that the cooling device 100 can perform a cooling operation. A microcomputer 144 is provided to keep it below the maximum ice crystal generation temperature. The main controller 140 has a storage unit (not shown) for storing necessary data (set temperature of the storage, control temperature, etc.).

The main control unit 140 (in particular, the microcomputer 144) may be connected to the subcooling device 200 through the communication line DL, and through the communication line DL, the main control unit 140 from the subcooling device 200. Data (for example, the current operating state of the subcooling device 200, etc.) may be received, stored, or displayed on the display unit 130. The communication line DL may be selectively provided.

The microcomputer 144 controls the temperature of the storage according to the temperature setting from the input unit 120, and controls the inside of the storage so that the supercooling control, the ice control, and the freezing control of the subcooling apparatus 200 can be independently performed. Is maintained at least below the maximum ice crystal generation temperature.

As shown in FIG. 8, the subcooling apparatus 200 includes an independent storage room for storing an object in an internal storage space and mounted and cooled in a storage, and supplies heat to the storage space or generates heat. A heat source supply unit 210, a temperature sensing unit 220 that senses a temperature of an interior of an accommodation space or an enclosure, an input unit 230 that receives a command from a user, and a state or supercooling device 200 of the storage space or an enclosure; Control the display unit 240 and the heat source supply unit 210, which is a temperature control means based on the detected temperature from the temperature sensing unit 220, to at least the supercooled state and freezing of the objects in the independent storage room. It consists of a sub-control unit 280 to be stored in one of the states.

The supercooling device 200 is operated by receiving a power source from the main control unit 140, and the wiring for the power supply (wiring connected to the power line PL) is connected to all components requiring power, but such a technology Is merely a degree recognized by those skilled in the art to which the present invention pertains, and a description thereof is omitted.

The heat source supply unit 210 corresponds to a temperature control means for adjusting the temperature in the storage space to maintain a temperature corresponding to each of the supercooled state control, the ice ice control, and the freezing control. The heat source supply unit 210 is a means for applying energy to the storage space. The heat source supply unit 210 may generate heat energy, electric or magnetic energy, ultrasonic energy, optical energy, microwave energy, and the like and apply the energy to the storage space. In addition, the heat source supply unit 210 may supply energy to thaw the enclosure when the enclosure is frozen.

The heat source supply unit 210 is configured of a plurality of heat source supply units, and is mounted on the upper or lower side or the side of the storage space to supply energy to the storage space. In the present embodiment, the heat source supply unit 210 is an upper heat source supply unit 210a formed inside the upper side of the independent storage chamber, which is the upper side of the storage space, and a lower heat source supply unit 210b formed inside the lower side of the independent storage chamber, which is the lower side of the storage space. Is done. Each of the upper heat source supply unit 210a and the lower heat source supply unit 210b may be independently controlled by the sub controller 280 or may be integrally controlled.

In addition, the temperature sensing unit 220 detects the temperature of the storage space or the temperature of the storage, and is formed on the sidewall of the storage space to sense the temperature of the air in the storage space, adjacent to the storage or in contact with the storage, This corresponds to a sensor that can accurately sense the temperature of an object. The temperature sensor 220 applies a change value of a current value, a voltage value, or a resistance value corresponding to the temperature to the sub controller 280. The temperature sensor 220 may recognize that the temperature of the object or the storage space rapidly rises when the phase transition of the object is made, thereby allowing the sub controller 280 to recognize the release of the supercooled state of the object. .

In the present embodiment, the temperature sensing unit 220 includes an upper sensing unit 220a formed in the upper side of the independent storage room, which is the upper side of the storage space, and a lower sensing unit 220b formed in the lower side of the independent storage room, which is the lower side of the storage space. It may be made of. The upper sensing unit 220a and the lower sensing unit 220b are mounted on or adjacent to a surface on which the upper heat source supply unit 210a and the lower heat source supply unit 210b are formed.

The sub controller 280 may control the heat source supply unit 210 according to the sensed temperature from the temperature detector 220 to selectively perform the freezing control, the ice ice control, and the supercooling control. In particular, the sub controller 280 controls the upper heat source supply unit 210a according to the sensing temperature from the upper sensing unit 220a and controls the lower heat source supply unit 210b according to the sensing temperature from the lower sensing unit 220b. You can also control each.

The input unit 230 is a on / off switch function of the supercooling device and means for allowing a user to select a command for freezing control, ice control, and supercooling control. For example, a push button, a keyboard, a touch pad, etc. may be used. will be.

The display unit 240 performs a display function of the on state / off state of the supercooling device and a function of displaying the control (refrigeration control, ice control, supercooling control) that is currently performed, such as an LCD display or a led display. .

As described above, the sub-control unit 280 controls the heat source supply unit 210 according to the sensed temperature by the temperature sensing unit 220 to control the refrigeration control, the ice control, and the supercooling control through the main control unit 140 and the cooling device ( 100) may be performed independently. For such independent control, a storage unit for storing an algorithm for performing such control may be provided.

In this case, the refrigeration control is such that the supply of heat through the heat source supply unit 210 or the generation of heat is reduced or becomes extremely small, so that the contents in the independent storage room are frozen. Such control may be performed by turning off the supercooling device. In this refrigeration control, the temperature is maintained at about the same temperature as the cooling temperature by the cooling device 100, and therefore, the temperature is at least below the maximum ice crystal generation temperature or is, for example, -20 ° C.

The supercooling control is such that the temperature of the object is, for example, -3 to -4 ° C so that the object is stored in a supercooled state. In the supercooling control, a control is additionally performed to sense that the temperature of the packaged material rapidly rises at, for example, -4 ° C, while the packaged material maintains the supercooled state and freezes. In addition, during the release of the supercooled state, thawing is performed through the operation of the heat source supply unit 210, and after thawing is completed, control is performed to perform cooling again.

The thin ice control controls the heat source supply unit 210 so that the temperature of the stored object is lower than the temperature at the time of supercooling control, but is higher than the cooling temperature by the cooling apparatus 100, and the stored object is stored in a sub-freezing state and then taken out. To make cutting for knife, etc. easy.

The sub controller 280 may block the supply of power applied to each element according to the on / off switch input of the subcooling device from the input unit 230 so that the operation thereof may not be performed.

In addition, the sub controller 280 may receive at least three or more control commands from the input unit 230 and operate accordingly.

The input unit 230 additionally has a function of acquiring a thawing command, and the sub-control unit 280 operates the heat source supply unit 210 in response to the thawing command from the input unit 230 so that energy can be thawed. (Especially thermal energy).

9 is an exploded perspective view of a subcooling apparatus according to an embodiment of the present invention, FIG. 10 is a perspective view of a subcooling apparatus according to an embodiment of the present invention, and FIG. 11 is a cross-sectional view of the subcooling apparatus according to an embodiment of the present invention. Figure is shown.

The independent storage compartment of the subcooling apparatus according to the embodiment of the present invention includes an outer casing 1100, a drawer 1200 and a side casing 1300. The drawer 1200 is insertable and withdrawable into the outer casing 1100, and since the electronic device is not attached to the drawer 1200, the drawer 1200 is completely detached from the outer casing 1100 and is detachable. The outer casing 1100 includes a heat insulator 1110 to insulate the supercooling device from other areas within the cooling device in which the subcooling device is located. The drawer 1200 and the side casing 1300 also include heat insulating materials 1210 and 1310, respectively, to insulate portions where heat insulating is not sufficiently performed by only the heat insulating material 1110 of the outer casing 1100. The heater 1140, which is a heat source supply unit, is installed inside the outer casing 1100, and a heat generation amount of the heater 1140 is controlled by a controller (not shown) to control the temperature of the supercooling device. The heater 1140 includes an upper heater 1142 and a lower heater 1144, and the calorific values of the upper heater 1142 and the lower heater 1144 are adjusted by a controller (not shown), respectively. In addition, an upper temperature sensor 1132 for measuring the temperature of the storage space in the independent storage compartment is installed above the outer casing 1100. In order to minimize the influence of the heat of the heater 1140 on the internal temperature sensor 1132, the heater 1140 is limited to a position close to the internal temperature sensor 1132, and the heater 1140 and the internal temperature A separate heat insulating member (not shown) may be further provided between the detection sensors 1132. In addition, the lower portion of the outer casing 1100 is provided with sensors (1134, 1136) for detecting the temperature of the food. The sensors 1134 and 1136 measure the temperature of the food placed in the drawer 1200, and when the food is widely distributed in the drawer 1200, the sensor 1134 and 1136 may be configured to better reflect the temperature of the food in the operation of the supercooling device. It is preferable that a plurality is provided at intervals. In the embodiment, two sensors 1134 and 1136 are provided, but three or more sensors may be provided. The sensors 1134 and 1136 are not installed in the drawer 1200 in contact with food, but are installed in the outer casing 1100, thereby transferring power to the sensors 1134 and 1136 to the drawer 1200 and transmitting temperature sensing information. Since the cable for receiving may be deleted, the drawer 1200 may be completely withdrawn from the outer casing 1100. If the drawer 1200 is not fully withdrawn from the outer casing 1100, it is inconvenient to put food in or out of the drawer 1200, and it is quite inconvenient to clean the drawer 1200. The sensors 1134 and 1136 are attached to the lower surfaces of the sensor mounting portions 1134a and 1136a of a thin metal plate attached to the lower surface of the outer casing 1100 so that the sensors 1134 and 136 are exposed to the outside of the outer casing 1100. Prevent it.

12 is a view showing a metal plate installed in the drawer of the supercooling apparatus according to an embodiment of the present invention, Figure 13 is a view showing a metal plate is installed in the drawer of the subcooling device according to an embodiment of the present invention. As described above, the independent storage compartment, which is a supercooling apparatus according to an embodiment of the present invention, may draw out the drawer 1200 completely from the outer casing 1100 and may be separated, so that the sensors 1134 and 1136 may draw the drawer 1200. Since it is not located in the outer casing 1100, the sensitivity of sensing the temperature of the food stored in the drawer 1200 may be deteriorated. In order to compensate for this, in the basket 1230 of the drawer 1200, the temperature change of the metal plate 1232 (or the metal medium) and the metal plate 1232 to which the temperature change of the food distributed in the drawer 1200 is transmitted is measured. Contact portions 1234 and 1236 are provided to 1134 and 1136. The contact portions 1234 and 1236 protrude downward through the bottom surface of the basket 1230, and the sensor installation portions 1134a and 1136a and the contact portion (1134a and 1136a) are completely inserted into the outer casing 1100. 1234, 1236 are contacted without a gap to better convey the temperature of the food to the sensors 1134, 1136.

14 is an exploded perspective view of the side casing provided in the supercooling device according to an embodiment of the present invention. Components corresponding to the input unit, the display unit, and the sub control unit of FIG. 8 are inserted into the side casing. The side casing may be provided on one side, top, front, etc. of the independent storage room.

In the side casing 1300, a heat insulating material 1310, a control panel (not shown), a control panel mounting part 1320, an operation panel (not shown), and an operation panel mounting part 1330 are installed. The operation panel (not shown) includes button units 1315a, 1315b, 1315c, and 1315d, which are input units for inputting a function of the supercooling device, and a display unit 1316, which is a display unit displaying selected functions, and the button unit 1315a. 1315b, 1315c, and 1315d display the function input through the display 1316, and transmit information on the input function to the control panel (not shown). The side casing 1300 is preferably provided with a window (hole) in a corresponding position so that the button portion (1315a, 1315b, 1315c, 1315d) and the display 1316 of the PCB control board can be exposed to the outside. Since the button portions 1315a, 1315b, 1315c, and 1315d and the display portion 1316 are located in the side casing 1300 instead of the drawer 1200, the drawer 1200 is completely detachable from the outer casing 1100. The button portions 1315a, 1315b, 1315c, and 1315d include a button 1315a for selecting a thin ice function, a button 1315b for selecting a freezing function, a button 1315c for selecting a supercooling function, and a power supply for the supercooling device. Button 1315d. The display 1316 displays an on / off state of the power supply of the subcooling device and a function currently being performed in the subcooling device. When the user turns on the subcooling device through the button 1315d and selects the ice function through the button 1315a, the control panel (not shown) receives an input signal from the button 1315a and receives the display 1316. Indicates that the refrigeration function has been selected. In addition, the control panel (not shown) adjusts the amount of heat generated by the heater 1140 installed in the outer casing 1100. The control panel (not shown) adjusts the amount of heat generated by the heater 1140 through the internal temperature sensor 1132 and the sensors 1134 and 1136 to control the temperature in the supercooling device to be within a desired temperature range. For example, when you store meat in a supercooling device, you can use the icy mode to easily cut meat while slightly frozen. In addition, when the refrigeration function is selected through the button 1115b, the control panel (not shown) turns off all the heaters 1140 and allows food to be stored at the same temperature as other areas of the refrigerator without separate temperature control. On the other hand, when the subcooling function is selected through the button 1115c, the control panel (not shown) may control the sensor 1132, 1134, and 1136 to maintain a temperature of approximately -2 ° C. to −4 ° C. in the storage space. While continuously detecting the temperature of the supercooling device and the temperature of the food, the amount of heat generated by the heater 1140 is adjusted. When the meat is stored without freezing at sub-zero temperatures with the supercooling function, ice crystals are formed in the meat, and the fiber of the meat is destroyed to prevent the deterioration of taste.

In the above, the present invention has been described in detail by way of examples based on the embodiments of the present invention and the accompanying drawings. However, the scope of the present invention is not limited by the above embodiments and drawings, and the scope of the present invention will be limited only by the contents described in the claims below.

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

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

3 is a view showing a process in which ice tuberculosis is generated in the liquid being cooled.

4 is a view showing a process for preventing the formation of ice tuberculosis applied to the supercooling apparatus according to the present invention.

5 is a schematic configuration diagram of a supercooling apparatus according to the present invention.

FIG. 6 is a graph illustrating a supercooling state of water according to the subcooling apparatus of FIG. 5.

7 is a block diagram of a supercooling system according to the present invention.

8 is a configuration diagram of the supercooling apparatus of FIG. 7.

9 is an exploded perspective view of a supercooling apparatus according to an embodiment of the present invention.

10 is a perspective view of a supercooling apparatus according to an embodiment of the present invention.

11 is a view showing a cross section of the supercooling apparatus according to an embodiment of the present invention.

12 illustrates a metal plate installed in the drawer of the supercooling apparatus according to the embodiment of the present invention.

13 is a view showing a metal plate installed in the drawer of the supercooling apparatus according to an embodiment of the present invention.

14 is an exploded perspective view of the side casing provided in the supercooling device according to an embodiment of the present invention.

Claims (17)

A cooling device including a storage for storing the storage, cooling means for cooling the storage, and a main control part for controlling the cooling means by receiving an external power source and maintaining the temperature in the storage at least below the maximum ice crystal generation temperature; Independent storage compartment for storing the interior therein, and mounted in the storage and cooled, a temperature sensing unit for sensing the temperature of the independent storage room, temperature control means for adjusting the internal temperature mounted in the independent storage room, and from the temperature sensing unit The supercooling system comprising a sub-control unit for controlling the temperature control means on the basis of the sensed temperature of the, so that the storage in the independent storage room is stored in one of the supercooled state and the frozen state. The method of claim 1, The subcooling apparatus is operated by receiving a power source from the main control unit, and the sub-controller independently controls the subcooling state and the freezing state control of the objects with respect to the main control unit. The method of claim 2, The subcooling device further performs a thin ice control at a temperature between the control temperature in the supercooled state and the control temperature in the frozen state. The method according to any one of claims 1 to 3, The subcooling device includes an input unit for acquiring a supercooling control input or a freezing control input or a thin ice control input for an object, and a display unit for displaying a state of a control currently being performed, and the sub-control unit includes an input unit and a display unit. Supercooling system, characterized in that the control. The method of claim 1, The sub-control unit is provided on one side or the upper surface or the front side of the independent storage room. The method according to any one of claims 1 to 3, The temperature control means is a supercooling system, characterized in that to supply heat to the interior of the independent storage compartment, or to generate heat so that the upper temperature of the independent storage chamber is maintained above the maximum ice crystal generation zone temperature. The method of claim 6, The temperature control means is a supercooling system, characterized in that to maintain the upper temperature of the independent storage room above the phase transition temperature. The method of claim 6, The temperature regulating means maintains the lower temperature of the independent storage room or the temperature of the storage at a preset supercooling temperature, so that the storage is stored in a supercooling state. The method of claim 8, The temperature control means has a supercooling system, characterized in that it comprises a first and a second heat source supply each formed independently on at least two or more sides of the independent storage room. 10. The method of claim 9, The temperature sensing unit comprises at least one temperature sensor mounted on or adjacent the side on which the first or second heat source supply is formed. The method of claim 10, The sub-control unit controls the first and second heat source supply unit, the sub-cooling system characterized in that the independent control based on the temperature of the temperature sensor formed on the same surface or the adjacent temperature sensor. The method of claim 1, The temperature sensing unit is a supercooling system, characterized in that it comprises a metal medium which is mounted inside the independent storage room and in contact with the object to transmit the temperature of the object, and a first temperature sensor for sensing the temperature transmitted by the metal medium. The method according to claim 1 or 12, wherein The temperature sensing unit comprises a second temperature sensor mounted above the inside of the independent storage compartment. An independent cooling device for allowing the inside of the reservoir to be cooled controlled at least below the maximum ice crystal generation temperature; An independent storage room capable of storing an interior therein and mounted in a storage room; An independent heating device that operates independently of the operation of the independent cooling device to supply heat to the inside of the independent storage room, generate heat, and allow the objects stored in the independent storage room to be stored in one of a supercooled state and a frozen state. Subcooling system comprising a. The method of claim 14, The independent cooling device is operated by receiving an external commercial power, the subcooling system characterized in that to supply the power to the independent heating device. The method of claim 15, The independent heating apparatus is separated from the inside of the independent storage compartment, is provided on one side or the upper surface or the front side of the independent storage compartment, the supercooling system characterized in that it comprises a control unit to perform a supercooled state and a frozen state. The method of claim 16, The independent heating apparatus includes an input unit capable of acquiring a supercooling control input and a refrigeration control input for an object, and a display unit capable of displaying a state of a control currently being performed.

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