KR20100011329A - Supercooling system - Google Patents

Abstract

PURPOSE: A super cooling system is provided to stably maintain stored products in a super cooled state and to independently super-cool stored products. CONSTITUTION: A super cooling system comprises a super cooling unit(20) and a chiller(60). The super cooling unit is composed of a product containing space, a wireless power receiver(21), a heat supply part(25), and a controller(28). The controller controls the heat supply part and maintains the product in a non-frozen state. The chiller comprises a receiving part, a cooling part(44), a wireless power transmission part(34), and a controller(46). The receiving part accepts the super cooling unit. The cooling part cools the receiving part. The controller controls the cooling part.

Description

Super Cooling System {SUPERCOOLING SYSTEM}

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a supercooling system, and in particular, receives only power from a cooling device, and independently controls the temperature of the enclosure and the upper layer of the enclosure in contact with the enclosure, thereby maintaining the enclosure free of temperature even below the phase transition temperature. A subcooling system.

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 even the slightest stimulus breaks the unstable equilibrium state and is likely 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 apparatus, and the electrode used in these, which are Republic of Korea Patent Application Publication No. 2000-0011081.

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 (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 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.

In addition, in the case of the prior art, the entire cold storage corresponds to a device for supercooling only, and there is a problem that storage in a subcooled state for some of the objects is difficult.

An object of the present invention is to provide a subcooling system capable of stably carrying out the composition and maintenance of the subcooled state of the package.

In addition, it is an object of the present invention to provide a subcooling system capable of independently performing subcooling storage for an enclosure when only a predetermined cooling space is formed.

In addition, an object of the present invention is to provide a subcooling system capable of being separated and moved by having a subcooling device that receives power only from a cooling device and performs independent control of the cooling device.

Another object of the present invention is to provide a subcooling system in which power is supplied to the subcooling device only under a situation in which the subcooling device is installed, or in which power is supplied only by a user's command.

In addition, an object of the present invention is to provide a subcooling system that can maintain the supercooled state of the object by adjusting the temperature of the object and the upper part of the object in contact with the object when cooling the object.

In addition, an object of the present invention is to provide a subcooling system capable of maintaining a supercooled state of an enclosure through simpler components and lower power consumption than the prior art.

The supercooling system of the present invention includes an accommodation space in which an enclosure is accommodated, a wireless power receiver receiving power from the outside, a heat source supply unit for supplying heat to the enclosure and the accommodation space using the received power, and a temperature of the enclosure. And a supercooling device comprising a control unit for controlling the heat source supply unit to adjust the temperature of the upper layer of the object in contact with the object in the container, so that the object is kept in a non-freezing state, a receiving unit accommodating the supercooling device; Separation of the supercooling device comprising a cooling unit for cooling the unit, a wireless power transmission unit for applying power to the outside, and a control unit for supplying power through the wireless power transmission unit receiving external commercial power and controlling the cooling unit. And can be mounted, independent subcooling control by the subcooling device is possible.

In addition, the control unit of the supercooling device preferably controls the heat source supply unit so that the temperature of the object is lower than the temperature of the upper part of the object.

In addition, the temperature control unit preferably controls the temperature of the upper portion of the object to be higher than the phase transition temperature of the object.

In addition, the supercooling device preferably includes a temperature sensing unit for sensing at least one or more temperatures of the object corresponding to the object or the upper object part of the object or the object or the object upper part.

In addition, the subcooling device is provided with a temperature input unit for receiving the subcooling temperature of the object from the user, it is preferable that the control unit of the subcooling device to adjust the heat source supply in response to the input subcooling temperature.

In addition, the subcooling device preferably includes a display unit for displaying the input subcooling temperature or the preset subcooling temperature.

In addition, the control unit of the cooling device preferably controls the cooling unit to vary the temperature in the accommodation space.

In addition, the supercooling device is preferably provided with a power storage unit connected to the wireless power receiver to charge and store the power.

In addition, the supercooling device preferably includes an information transfer unit that visually or audiologically transmits warning information to the user by using the power stored in the power storage unit.

In addition, it is preferable that a wireless data transmission / reception path is provided for data transmission between the supercooling device and the cooling device.

In addition, the supercooling device has an input for supplying and cutting off the power supply, the control unit of the supercooling device transmits the input and supply of the input power supply to the control unit of the cooling device through a wireless data transmission and reception path, The control unit preferably controls the wireless power transmitter according to the supply and cutoff input of the transmitted power supply.

In addition, the cooling device preferably includes a blocking unit for turning on / off power transmission by the wireless power transmitter.

In addition, the blocking portion is formed in the receiving portion, and it is preferable to operate on and off by inputting and withdrawing into the receiving portion of the subcooling device.

In addition, the cooling device preferably includes a power control unit for adjusting the power applied to the supercooling device.

In addition, the cooling device is provided with a sensing unit for detecting a load change of the subcooling device, the power control unit preferably adjusts the power in accordance with the detection result of the sensing unit.

In addition, it is preferable that the load fluctuation includes a state in which the subcooling device is separated from the cooling device.

In addition, the accommodation portion is formed in the door of the cooling device, it is preferable that the accommodation portion door for opening and closing the accommodation portion is formed.

Also, it is preferable that the accommodation portion has a position indicator for indicating the position where the subcooling device is to be placed.

In addition, the position display portion preferably includes a receiving groove into which at least a portion of the subcooling device is inserted.

In addition, the position display unit preferably includes a wireless power transmitter.

The present invention has the effect of stably performing the composition and maintenance of the supercooled state for the object.

In addition, the present invention has the effect that if only a certain cooling space is formed, to perform the subcooling storage for the storage independently.

In addition, the present invention is provided with a super-cooling device that receives only power from the cooling device, and performs independent control of the cooling device, there is an effect to enable a separate movement.

In addition, the present invention has the effect of reducing the power consumption by allowing the power to be supplied to the supercooling device only under the situation that the supercooling device is installed, or to be supplied only by the user's command.

In addition, the present invention is to apply the required power in accordance with the load degree of the object in the subcooling device, there is an effect of maintaining a stable state of the subcooling.

In addition, the present invention has an effect of maintaining the supercooled state of the object by adjusting the temperature of the object and the upper layer of the object in contact with the object when cooling the object.

In addition, the present invention has an effect that can maintain the supercooled state of the object through the simpler components and lower power consumption than the prior art.

In addition, the present invention provides an indication of the position of the subcooling device by the cooling device, so that the user can easily position the subcooling device in the cooling space.

In the following, the invention is described in detail with reference to the drawings.

3 is a view showing a supercooling process applied to the subcooling device according to the present invention. As shown in FIG. 3, the container C containing the liquid L in the cooling space S is cooled.

It is assumed that the cooling temperature of the cooling space S is cooled, for example, 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, at water below the maximum ice crystal formation zone (about -1 to -5 ° C) of the water where liquid crystals are produced at a maximum of about -1 to -5 ° C, or liquid (L). It is intended to maintain the supercooled state of water or liquid (L) even at a cooling temperature below the maximum ice crystal generation zone of.

Evaporation takes place from the liquid L during this cooling, so that water vapor flows into the gas (or space) Lg in the vessel C. When the container C is closed by the lid Ck, the gas Cg may be in a supersaturated state due to the vaporized water vapor. However, in the present specification, the container (C) may optionally include a lid (Ck), if included, the cold air of the cooling space directly flows in, or the surface of the liquid (L) or the temperature of the gas (Lg) on the surface The cooling by the cold air can be prevented to some extent.

Water droplets in the inner wall of the vessel or water vapor in the gas Lg may freeze as the cooling temperature reaches or passes the temperature of the maximum ice crystal generation zone of the liquid L. 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 S) are formed and the condensed liquid L is iced. It can be formed into crystalline tuberculosis.

For example, when the frozen tuberculosis 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 to the liquid L. A freezing phenomenon is caused and the supercooling of the liquid L is released.

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

Accordingly, the supercooling device of the present invention applies or supplies energy (for example, thermal energy) to the container C and the liquid L stored in the cooling space S, so that the gas Lg and the liquid L By controlling the temperature, the liquid L is maintained in the freezing state, that is, the supercooling state, even below the phase transition temperature of the liquid. Here, the gas (Lg) is located in the upper layer portion of the liquid (L) in contact with the liquid (L), and is defined herein as the liquid upper layer (or the upper portion of the package), in addition to the gas (Lg), It may be an object containing an oil layer or plastic or other resin that may float in the liquid (L). In addition, in the present embodiment, it is described as a liquid (L) for convenience, but may be applied to not only the liquid (L) but also general objects such as meat, fish, vegetables, fruits, and the like.

The maintenance of the supercooled state by this temperature control is described in detail in FIGS. 4 and 5.

4 and 5 are graphs of the supercooled state of water according to FIG. 3.

First, FIG. 4 shows a liquid L (in this embodiment, distilled water or water) stored therein when the cooling space S is maintained at a constant temperature (for example, about −12 ° C.) or cooled. The temperature of the liquid upper layer portion Lg is gradually lowered corresponding to the cooling temperature. However, as described in FIG. 3, energy (for example, thermal energy) is applied to the liquid L and / or the liquid upper layer portion Lg so that the temperature of the liquid upper layer portion Lg is higher than the temperature of the liquid L. In the case of holding, it can be seen that the liquid L is freezing by maintaining the supercooled state even at about −10 ° C., which is lower than the maximum ice crystal generation temperature of water.

If the liquid L is frozen, the temperature of the liquid L maintains the phase transition temperature constant or rises rapidly to the phase transition temperature below the phase transition temperature.

5 is a temperature graph showing a correlation between the cooling temperature, the temperature of each part of the container, and the temperature of the liquid upper layer part.

As shown in FIG. 5, the cooling temperature of the cooling space S maintains a substantially constant cooling temperature with a slight fluctuation depending on the operation of the refrigeration cycle (ie, cooling means). In the case of the container C, since it comes into contact with the liquid L, the temperature of the container C is almost equal to the temperature of the liquid L. Therefore, even if the temperature of the upper, middle, and lower portion of the container (C) is sensed, the temperature is substantially the same. Also in FIG. 5, when the temperature of the upper liquid layer Lg is controlled above the temperature of the upper, middle, and lower portions of the container C, that is, the temperature of the liquid L, the liquid L maintains the supercooled state even at a temperature lower than the phase transition temperature. It can be seen that.

That is, the supercooling device of the present invention applies energy to the liquid L and / or the container C so that the temperature of the liquid upper layer portion Lg is higher than the temperature of the liquid L, more preferably, the liquid upper layer portion. By keeping the temperature of (Lg) at or above the phase transition temperature of the liquid (L), the liquid (L) in the container (C) is maintained at a supercooled state at or below the phase transition temperature or below the maximum ice crystal generation temperature of the liquid (L). Done.

Although the case of the liquid (L) has been exemplarily described, in the case of an enclosure containing liquid, fresh long-term storage of the enclosure is possible by continuously supercooling the liquid in the enclosure, so that the enclosure is subjected to phase change by applying the above process. It can be maintained under supercooled temperature. In addition, as shown in FIG. 5, even if the cooling temperature is changed, the temperature of the liquid L may be maintained at a desired temperature through temperature control.

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.

6 is a schematic structural diagram of a supercooling system according to the present invention.

The supercooling system has a cooling space therein, and includes a cooling device 60 for performing cooling to the cooling space, a storage space (or a container) for accommodating the goods, and a cooling space of the cooling device 60. The supercooling device is stored and cooled, and operated by receiving power from the cooling device 60 to control the temperature of the enclosure and the upper layer of the enclosure in contact with the enclosure so that the enclosure remains free from the phase transition temperature. 20).

First, the cooling device 60 receives power from an external commercial power source, and supplies a power source 32 for supplying power for each component therein by performing transformation and rectification, and a power source applied from the power source 32. The wireless power transmitter 34 to be applied externally or to the subcooling device 20 by a non-contact method such as a magnetic induction method, the data communication unit 36 which communicates with the subcooling device 20, the cooling space and the outside temperature A detection unit 38 for detecting a back light, an input unit 40 for receiving cooling and freezing commands from a user, temperature setting, and the like, a display unit for displaying information on a cooling space, etc., information of a supercooling device 20, etc. 42), a refrigeration cycle 44 for cooling the cooling space, and a controller 46 for controlling the above-described components to perform power supply or control for the cooling and subcooling device 20 for the cooling space. Is done. Here, the cooling space may include a refrigerating chamber or a freezing chamber and a special cooling chamber, like a general refrigerator.

The power supply unit 32 is shown only for convenience of supplying power only to the control unit 46 in FIG. 6, and it should be understood that the power supply unit 32 supplies power required for all components requiring power, such as the wireless power transmitter 34.

The wireless power transmitter 34 supplies power required for the supercooling device 20 to the wireless power receiver 21 of the subcooling device 20 in a non-contact manner such as magnetic induction. That is, the wireless power transmitter 34 and the wireless power receiver 21 are provided with a constant induction coil, and magnetically induces a power applied to the wireless power transmitter 34, and by this magnetic induction, the wireless power receiver 21. In a manner that the power is applied to the induction coil of the magnetic induction by the well-known induction coil can be applied. Such a non-contact method can be applied to various other methods as long as it is not limited to magnetic induction.

Next, the data communication unit 36 performs data communication with the data communication unit 23 of the subcooling device 20 in a non-contact manner. For example, in the data communication between the data communication unit 36 and the data communication unit 23, an infrared communication, an RF communication, a ZIGBEE communication, a BLUETOOTH communication, an ASK (Amplitude Shift Keying) method using a transformer, or the like may be applied.

The sensing unit 38 represents a temperature sensor for sensing a temperature of the cooling space and the outside, a temperature of an evaporator or a condenser provided in the freezing cycle 44, and the like.

The input unit 40 includes cooling and freezing commands (for example, freezing, freezing, special cooling, etc.) from the user, temperature setting, power supply command to the subcooling device 20 (optional), and subcooling control of the subcooling device 20. A command (optional) or the like is received and applied to the controller 46. The input unit 40 may be a touch button, a touch screen, an electrostatic switch or a general input button. In addition, the user may input the object information such as the type of the object, the temperature of the maximum ice crystal generation zone of the object, the phase transition temperature of the object, the mass of the object, the volume of the object, and the like through the input unit 40. The input unit 40 may be a bar code reader or an RFID reader, and may provide the control unit 46 with the stored information by the reading.

The display unit 42 is a display means for displaying information on the cooling space and the like (for example, the temperature of the cooling space, etc.), information on the subcooling device 20 (for example, whether or not the supercooling control is performed), and the like. Or it may be a device using an LCD or the like.

The refrigeration cycle 44 is a device for cooling the cooling space, which is generally provided in the refrigeration apparatus, and may be classified into a simple cooling and a direct cooling according to a method of cooling the contents. Cooling can be performed by direct cooling. Accordingly, the refrigeration cycle 44 includes a compressor, an evaporator, a condenser, a refrigerant pipe, and the like for cooling, and it should be understood that the cooling cycle 44 optionally includes a cooling fan, a damper, a cold air induction duct, and the like.

The controller 46 controls the refrigeration cycle 44 that cools the cooling space and the above-described components to basically perform cooling of the cooling space.

The control unit 46 performs the cooling of the cooling space by controlling the refrigeration cycle 44, but in the case of general refrigeration is maintained at a cooling temperature of, for example, -18 ~ -22 ℃, or in the case of supercooling The cooling temperature equal to or below the maximum ice crystal generation zone of the enclosure is maintained.

In addition, the controller 46 performs an operation of controlling the refrigeration cycle 44 by a temperature control command (for example, a set temperature of the cooling space, etc.) input from the input unit 40. In addition, the control unit 46 may receive the cooling temperature of the received object from the input unit 27 installed in the supercooling device 20 through the data communication unit 36 and perform cooling accordingly. The temperature control for such a cooling space should be performed together with the temperature sensing from the sensing unit 38, and the description thereof will be omitted.

In addition, the controller 46 sets the supercooling temperature of the package according to the package information from the input unit 40, and applies the supercooling device 20 to the supercooling apparatus 20 through the data communication unit 36 to perform control accordingly. You may.

In addition, the controller 46 may control the wireless power transmitter 34 according to a power application command from the input unit 40 to apply power to the supercooling device 20. Of course, power supply may be automatically applied when the wireless power receiver 21 is close to the wireless power transmitter 34 so that power supply by magnetic induction may be caused even without a power supply command. .

In addition, the control unit 46 obtains the temperature (for example, the supercooling temperature of the object in the supercooled state, etc.) received by the data communication unit 36 from the subcooling device 20, information on whether to perform the supercooling control, and the like. The display unit 42 can also be displayed.

The supercooling device 20 includes a wireless power receiver 21 that receives power from the cooling device 60 in a non-contact manner, a power storage 22 that receives power from the wireless power receiver 21, and stores the power; , A data communication unit 23 communicating with the cooling device 60, a sensing unit 24 for sensing a temperature of the storage space, and the like, and a heat source for supplying heat, which is energy, to the storage and / or upper layer of the storage space. The supply unit 25, the display unit 26 for displaying information such as the state of the object, the input unit 27 for acquiring a command from the user, and the above-described components are controlled to control the objects contained in the storage space. The control unit 28 to maintain the freezing state even below the phase transition temperature.

The wireless power receiver 21 corresponds to the wireless power transmitter 34 of the cooling device 60 described above. As described above, the wireless power receiver 21 receives power by a magnetic induction method or the like.

The power storage unit 22 is a component that can be selectively provided, while receiving the power from the wireless power receiver 21 while the wireless power receiver 21 receives power from the cooling device 60, It includes a charging device for supplying the power stored in the control unit 28 and the like while the power is not supplied from the wireless power receiver 21.

The data communication unit 23 corresponds to the data communication unit 36 of the cooling device 60 and, as described above, performs communication in a non-contact manner or the like.

The sensing unit 24 detects or stores the state of the storage space, the state of the storage stored in the storage space, the temperature of the upper layer of the storage, and informs the controller 28. The sensing unit 24 may store, for example, information about the volume of the storage space in a state of the storage space, a thermometer for sensing the temperature of the storage space or the temperature of the storage space, or an upper layer of the storage space, It may be a hardness meter, a weight scale or an optical sensor (or a laser sensor) or a pressure sensor which confirms that the stored product has been stored or that the supercooling of the stored product is released or confirms the type, volume, and mass of the stored product.

The heat source supply unit 25 applies energy to the object and / or the storage space and / or the container to the storage space to be cooled so that the temperature of the upper portion of the object is higher than the temperature of the object. By making the temperature of the upper portion of the water to be equal to or higher than the phase transition temperature of the packaged object, the packaged object is maintained in a supercooled state even below the phase transition temperature or below the maximum ice crystal generation temperature of the packaged object. The heat source supply unit 25 may use, for example, thermal energy, ultrasonic energy, or the like as such energy.

The display unit 26 may display the supercooling temperature of the package or visually or audibly to indicate that the supercooling operation of the package is in progress. In addition, the display unit 26 does not receive power because the subcooling device 20 is separated from the cooling device 60, or the power is no longer applied from the cooling device 60 due to a power failure or failure of the cooling device 60. If not received, and only when the power is applied through the power storage unit 22, the warning information (that is, information on the power problem) for this may be displayed visually or audibly.

The input unit 27 receives a command for performing a subcooling operation on the stored object, a setting of a subcooling temperature, and the like from a user and applies the same to the controller 28. In addition, the input unit 27 receives a power supply command or a power supply cutoff command for supplying power from the cooling device 60 to the controller 28.

The controller 28 controls the heat source supply unit 25 as the enclosure stored in the storage space located in the cooling space is cooled so that energy is supplied to the enclosure and / or the upper layer of the enclosure, as described above. This ensures that the enclosure remains freeze-free even below the phase transition temperature.

For example, the control unit 28 supplies energy by controlling the heat source supply unit 25 in accordance with a command to perform a supercooling operation from the input unit 27 or a preset command. According to the temperature information sensed from, it is to adjust the on / off of the heat source supply unit 25 and the amount of energy applied.

In addition, the control unit 28 supplies energy by controlling the heat source supply unit 25 according to the subcooling temperature set by the input unit 27 or the preset subcooling temperature, but the temperature detected by the sensing unit 24. According to the information, the on / off of the heat source supply unit 25 and the amount of energy applied is adjusted.

In addition, when the controller 28 adjusts the temperature of the cooling space, the cooling device 60 may include a thermoelectric element, a heater, or the like, to more actively adjust the temperature of the cooling space.

In addition, the controller 28 may receive a power supply command or a power supply cutoff command from the input unit 27 and transmit the power supply command or the power supply cutoff command to the cooling device through the data communication unit 23. Accordingly, the supply and interruption of power from the cooling device 60 can be performed.

In addition, when power is not applied from the cooling device 60 and power of the power storage unit 22 is used, the control unit 28 may display warning information visually or audibly through the display unit 26. .

Detailed control procedures and the like will be described below.

In the above-described embodiment, the wireless power transmitter 34 and the wireless power receiver 21 may be wired power transmission, and the communication between the data communication unit 36 and the data communication unit 23 may also be configured by wired communication. In addition, it should be understood that the controller 46 may also perform the functions of the controller 28. However, in FIGS. 7 to 11, it is assumed that the configuration is the same as that of FIG. 6.

It should be understood that the above-described control unit 28 and the control unit 46 naturally include a storage unit for storing various data such as the above-described temperature, input command, and the like.

7 to 11 are schematic configuration diagrams of the first to fifth embodiments of the supercooling apparatus. In these embodiments, a container 29 in which an enclosure is housed is commonly applied, for example, a material such as plastic may be used, and a metal layer or the like inside the container for higher heat conduction. It may be provided with, or may be provided with a heat insulating layer in order to prevent a sudden temperature change due to external cold air to the container (29).

FIG. 7 shows a first embodiment of the subcooling apparatus 20, in which the heat source supply unit 25 mainly applies energy to an enclosure in the container 29, and an upper end mainly applying energy to the upper layer of the enclosure. It consists of the heat source supply part 25b. The energy supplied by the lower heat source supply 25a and the upper heat source supply 25b may affect each other by radiation, convection, conduction, etc. in the enclosure.

In addition, the sensing unit 24 corresponds to the lower sensing unit 24a for sensing the temperature of the lower end (or relatively downward direction) of the container 29 corresponding to the object or the object, and the upper part of the object or the upper part of the object. Comprising an upper sensing unit 24b for sensing the temperature of the upper end (or the relatively upper layer direction) of the container 29.

In this configuration, the control unit 28 adjusts the on / off or energy supply amount of the lower heat source supply unit 25a in accordance with the temperature sensed by the lower sensing unit 24a as cooling of the enclosure is performed, and independent of this. The on / off or energy supply amount of the upper heat source supply unit 25b is adjusted according to the temperature sensed by the upper sensing unit 24a. That is, the controller 28 performs energy supply in accordance with the state of the object and the state of the upper part of the object, respectively, and as described above, even if the cooling temperature is cooled below the temperature of the maximum ice crystal generation zone of the object, The temperature is controlled to be higher than the temperature of the enclosure, so that the enclosure is preserved in a freeze state.

In this control, if the control unit 28 stores the subcooling temperature set for the object or the subcooling temperature set by the user or the optimum subcooling temperature for storing the object, the lower sensing part 24a and the lower heat source supply part. Each of 25a may be independently controlled to maintain such a temperature.

By independent control of the object and the upper part of the object, optimum energy supply control for energy in the supercooled state is possible, and even in case of sudden fluctuations in external cooling temperature (for example, during sudden cooling or defrosting operation). The supercooled state of the enclosure can also be stably maintained. In addition, when the user sets the supercooling temperature of the object, control to this temperature can be performed more quickly.

8 shows a second embodiment of the subcooling apparatus 20, in which the heat source supply unit 25 mainly applies energy to an enclosure in the container 29, and an upper end mainly applying energy to the upper layer of the enclosure. It consists of the heat source supply part 25b.

In addition, the sensing unit 24 includes only the lower sensing unit 24a which senses a temperature of the lower end (or a relatively downward direction) of the container 29 corresponding to the object or the object.

At this time, the control unit 28 controls the upper heat source supply unit 25b, but controls to apply a constant (or relatively constant) energy to the upper layer of the enclosure, and for the enclosure as described above in FIG. Likewise, the control may be performed by the lower heat source supply unit 25a and the sensing unit 24a. This is necessary for the control unit 28 to precisely control the temperature of the packaged object to a temperature of or below the maximum ice crystal generation zone of the packaged object. As long as the phase change of the water is higher than the temperature, the supercooled state of the object is maintained. Of course, with respect to the amount of energy applied by the upper heat source supply 25b, the control unit 28 may store the necessary data and control the upper heat source supply 25b accordingly. Accordingly, the controller 28 may maintain the enclosure in a supercooled state at or below the phase transition temperature even if the temperature change of the upper layer portion of the enclosure is not performed.

FIG. 9 shows a third embodiment of the subcooling apparatus 20, in which the heat source supply unit 25 includes an interruption heat source supply unit 25c for applying energy to an enclosure of the container 29 and an upper layer of the enclosure. ) Consists of a lower sensing unit 24a which senses the temperature of the lower end (or the relatively downward direction) of the container 29 corresponding to the object or the object.

In this configuration, the control unit 28 controls the interruption heat source supply unit 25c in accordance with the temperature from the lower end detection unit 24a as the cooling of the object or the like proceeds. However, the energy applied to the enclosure by the interruption heat source supply unit 25c must be greater than the energy applied to the enclosure upper layer, so that the temperature of the enclosure upper layer becomes higher than the temperature of the enclosure. For this purpose, for example, when the interruption heat source supply unit 25c is a heating coil, the number of rotations of the heating coil wound around the container 29 corresponding to the upper layer of the package is part of the container 29 corresponding to the object. Winding is made possible by making it less than the rotation speed of a heating coil, for example, the ratio of 1: 5 is possible. In addition, the interruption heat source supplying portion 25c may be formed of heating coils which are located at the top and the bottom, respectively, as well as a portion where the accommodating object and the upper part of the accommodating body meet, as shown in FIGS. 7 and 8, respectively. Like the control of the interruption heat source supply unit 25c, the control unit 28 corresponds to controlling one heat source supply unit substantially.

FIG. 10 shows a fourth embodiment of the subcooling device 20, in which the heat source supply unit 25 is composed of an upper heat source supply unit 25b that directly applies energy directly to the upper layer object, and the sensing unit 24 includes the upper layer object. Alternatively, the upper sensing unit 24b detects the temperature of the upper end of the container 29 corresponding to the upper part of the object (or the relatively upper direction).

Here, the energy supplied by the upper heat source supply part 25b is supplied not only to the upper part of the object but also to the object by radiation, convection, and conduction.

In particular, in such a structure, when the control unit 28 applies the energy by controlling the top heat source supply unit 25b, experimental data (for example, the temperature of the upper part of the enclosure) is applied to how much energy is supplied to the enclosure. Is 80 ° C., the temperature of the object is about -8 ° C. or an arithmetic algorithm (for example, the current cooling temperature or the temperature of the upper part of the object, the energy applied to the object from the calorific value of the upper heat source supply part 25b (or It is preferable that the estimation or calculation algorithm) of energy amount or calorific value) is stored.

That is, the control unit 28 controls the upper heat source supply unit 25b in accordance with the temperature by the upper sensing unit 24b, but the amount of energy supplied by the upper heat source supply unit 25b by the experimental data or the calculation algorithm (or Heat quantity) to maintain the supercooled state of the object.

FIG. 11 shows a fifth embodiment of the subcooling apparatus 20, in which the heat source supply unit 25 mainly applies energy to an enclosure in the container 29, and an upper end mainly applying energy to the upper layer of the enclosure. It consists of the heat source supply part 25b. The energy supplied by the lower heat source supply 25a and the upper heat source supply 25b may affect each other by radiation, convection, conduction, etc. in the enclosure.

In addition, the sensing unit 24 includes a sensing unit 38a for sensing the temperature of the cooling space S in which the container 29 is accommodated. Here, the sensing unit 38a is a sensing unit 38 provided in the cooling device 60, and the control unit 28 may receive a temperature detected by the sensing unit 38 from the cooling device 60. May be a set temperature of the cooling device 60.

The controller 28 determines and supplies the amount of energy to be applied to the object and the upper layer of the object according to the sensing temperature sensed by the sensor 38a. This is easy to include experimental data or calculation algorithms about how much energy should be applied to maintain the supercooled state of the package when the control unit 28 recognizes the cooling or sensing temperature of the container 29. Can be performed. Here, the heat source supply unit 25 may include only the upper heat source supply unit 25b instead of two, and perform control similar to that of FIG. 10.

In the first to fifth embodiments according to FIGS. 7 to 11 described above, since the cooling device 60 includes the refrigeration cycle 44, a predetermined defrosting device (for example, a defrosting sensor, a defrosting heater, etc.) is used. When defrosting is performed by the defrosting device, the control unit 28 cuts off the energy supply by the heat source supply unit 25, thereby preventing excessive temperature rise of the package and the upper layer of the package, thereby overcooling the package. You can also keep the state stable.

In addition, in FIGS. 7 to 11 described above, the subcooling device 20 controls the heat source supply unit 25 when the user inputs the subcooling temperature of the stored object through the input unit 27 to control the current temperature of the stored product. To allow storage of the objects at the input supercooling temperature.

12 and 13 are examples of subcooling systems.

As shown in FIGS. 12 and 13, the supercooling system includes a cooling device 60 in the form of a side by side refrigerator 100, and the subcooling device 20 is integrally provided in a detachable container 29. to be.

As shown, a door 140 having a handle 140a for opening and closing a cooling space (for example, a shape of a home bar) is provided at one side of the door 200 of the refrigerator 100.

13 is a partial perspective view of FIG. 12. As shown in FIG. 13, the cooling space 142 inside the door 140 is formed, and the supercooling device 20 may be stored in the cooling space 142.

The door 140 is rotatably supported on the lower end surface of the cooling space 142 by a pair of hinges 141a and 141b, and guide grooves 143a on both side surfaces 142a and 142b of the cooling space 142. ), 143b (not shown) are formed, one end of which is connected to the guide grooves 143a and 143b so as to be movable up and down, and the other end is connected to both sides of the door 140 to be rotatable. Links 144a and 144b are provided. Therefore, when the door 140 is opened and closed, the ends of the links 144a and 144b connected to the guide grooves 143a and 143b support the door 140 which opens and closes while moving up and down along the guide grooves 143a and 143b. Done.

The bottom surface 120 of the cooling space 142 is formed with a receiving groove 122 in which the container 29 can be accommodated. For example, when a power application method by wireless power transmission is applied, the wireless power transmitter 34 is provided around the accommodation groove 122 (for example, the bottom or side surface of the accommodation groove 122). The wireless power receiver 21 is formed on the bottom side of the container 29.

The accommodation groove 122 described above is an embodiment of the position display unit indicating the position where the subcooling device 20 should be mounted in the cooling space 142. That is, the position display part indicates the position where the subcooling device 20 is placed. In addition to the receiving groove 122, the position display part may be formed in the form of irregularities, or may be formed in the form of printed matter printed on a flat surface.

The supercooling device 20 is integrally formed in the container 29, and a storage space (not shown) for accommodating an object is formed in the container 29. The subcooling device 20 may include an input unit 27 and a display unit 26 on an outer surface of the container 29. The container 29 is composed of a main body portion 29a in which a storage space is formed, and a cover portion 29b for opening and closing the storage space. The sensing unit 24, the heat source supply unit 25, the wireless power receiver 21, the data communication unit 23, and the control unit 28 may be integrally embedded inside the container 29.

12 and 13 described above may be applied to various cooling devices and the like.

14a and 14b show another embodiment of a cooling device of a subcooling system.

14A relates to a cooling device 60a, which includes a power supply unit 32, a wireless power transmitter 34, a data communication unit 36, a detection unit 38, an input unit 40, a display unit 42, and a refrigeration cycle 44. The configuration and operation of the control unit 46 and the control unit 46 are almost the same as or similar to the cooling unit 60 of FIG. 6. However, the cooling device 60a further includes a switch 35 for controlling on / off of power transmission of the wireless power transmitter 34.

The switch 35 is electrically operated by the controller 46 so that the power transmission by the wireless power transmitter 34 is performed in the on state, and the power transmission by the wireless power transmitter 34 is blocked in the off state. You may.

In addition, the switch 35 may be a text switch or the like operated by an external force. As shown in FIG. 14B, a groove 122a is formed in the bottom surface of the accommodation groove 122, and a text switch 35a is mounted in the groove 122a. When the supercooling device 20 is mounted in the accommodation groove 122, the text switch 35a is turned on, and power transmission by magnetic induction between the wireless power transmitter 34 and the wireless power receiver 21 is performed. You lose. In addition, when the subcooling device 20 is separated outside the receiving groove 122, the text switch 35a is turned off, and power transmission is interrupted.

In addition, the controller 46 may check whether the subcooling device 20 is currently operating according to the on / off state of the switch 35 and display the same on the display unit 42.

15 is yet another embodiment of a cooling apparatus of a subcooling system. The cooling device 60b of FIG. 15 performs other functions substantially the same as or similar to those of the cooling device 60 of FIG. 6 except for the power control unit 47. However, the controller 46 additionally performs the control on the power controller 47.

If more current is to be applied through the wireless power receiver 21 when the load of the subcooling device 20 is increased (for example, an increase in the amount of storage, a case where the cooling temperature is relatively low, etc.), the subcooling The controller 28 of the device 20 may detect an increase in the load and inform the controller 46 of the cooling device 60b via the data communication unit 36 of the increase in load. Accordingly, the controller 46 may increase the power applied to the subcooling device 20 by the power control unit 47 by the wireless power transmitter 34. Since the power control unit 47 requires a larger current than the previous load state due to an increase in the load in the supercooling device 20, the wireless power transmitter 34 supplies a power having a larger current magnitude to the wireless power receiver 21. To be approved). The power control unit 47 may be integrated with the control unit 46 or may be integrated with the wireless power transmitter 34 and controlled by the control unit 46.

For example, the change in power transmitted from the wireless power transmitter 34 may be performed by the controller 46 by changing the frequency of power transmitted from the wireless power transmitter 34 or by changing the duty ratio of power. .

By adjusting the current magnitude, the current is actively applied to the subcooling device 20 by increasing the current, with respect to the increase in the load that the subcooling device 20 overcools and the increase in load due to the change in the cooling temperature. Can be. Of course, with respect to the reduction of the load, by applying the current required to the subcooling device 20 actively by reducing the current, it is possible to improve the reliability of the supercooled state storage for the object. In particular, in the case of a reduction in load, for example, the subcooling device 20 may be separated from the cooling device 60b, such that there is no storage to be stored in the subcooling state, in which case the transmission of power may be interrupted. have.

16A and 16B are combined state diagrams of a supercooling device and a cooling device.

16A and 16B, the receiving groove 120a is formed on the bottom surface 120 of the cooling space 142, and the insertion protrusion 29c is formed on the bottom surface of the main body 29a of the subcooling device 20. 29c is inserted into the accommodating groove 120a so that the supercooling device 20 is located in the accommodating groove 120a, which is a position indicator formed in the cooling apparatus 60.

FIG. 16A illustrates a process in which the insertion protrusion 29c is inserted into (or inserted into) the receiving groove 120a, and the subcooling device 20 is seated in the cooling space 142. The wireless power receiver 21 of the supercooling device 20 includes a core 21a and a coil 21b wound around the core 21a, and the wireless power transmitter 34 of the cooling device 60 also has a core 34a. ) And a coil 34b wound around the core 34a. In addition to the EE form, an EI form is also possible. Through this seating process, the subcooling device 20 is placed in a physical position that can receive power from the cooling device 60.

FIG. 16B is a process in which the insertion protrusion 29c is separated from (or separated from) the receiving groove 120a, and the subcooling device 20 is separated from or separated from the cooling space 142. The supercooling device 20 is no longer powered from the cooling device 60.

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 supercooling process applied to the subcooling device according to the present invention.

4 and 5 are graphs of the supercooled state of water according to FIG. 3.

6 is a schematic structural diagram of a supercooling system according to the present invention.

7 to 11 are schematic configuration diagrams of the first to fifth embodiments of the supercooling apparatus.

12 and 13 are examples of subcooling systems.

14a and 14b show another embodiment of a cooling device of a subcooling system.

15 is yet another embodiment of a cooling apparatus of a subcooling system.

16A and 16B are combined state diagrams of a supercooling device and a cooling device.

Claims (20)

An accommodation space in which an enclosure is accommodated, a wireless power receiver receiving power from the outside, a heat source supply unit for supplying heat to the enclosure and the accommodation space using the received power, a temperature of the enclosure, and an enclosure in the vessel A supercooling device including a control unit configured to control a heat source supply unit so as to adjust a temperature of an upper layer part of the package in contact with water, and to keep the package in a freezing state; And a control unit for receiving the supercooling device, a cooling unit for cooling the receiving unit, a wireless power transmission unit for applying power to the outside, and a control unit for supplying power through the wireless power transmission unit to receive external commercial power and controlling the cooling unit. Subcooling system, characterized in that consisting of a cooling device. The method of claim 1, The control unit of the supercooling device controls the heat source supply unit so that the temperature of the object is lower than the temperature of the upper layer of the object. The method of claim 2, The temperature control unit is a supercooling system, characterized in that for controlling the temperature of the upper portion of the enclosure is higher than the phase transition temperature of the enclosure. The method of claim 1, The supercooling device comprises a temperature sensing unit for sensing the temperature of at least one or more of the package or the upper layer of the package or the container corresponding to the package or the upper layer of the package. The method of claim 4, wherein The supercooling apparatus includes a temperature input unit configured to receive a subcooling temperature of an object from a user, and the controller of the subcooling apparatus adjusts the heat source supply unit in response to the input subcooling temperature. The method of claim 5, The subcooling device comprises a display unit for displaying the input subcooling temperature or the preset subcooling temperature. The method of claim 1, The control unit of the cooling apparatus controls the cooling unit to vary the temperature in the receiving space. The method of claim 1, The supercooling device is connected to the wireless power receiving unit, characterized in that it comprises a power storage unit for charging and storing the power. The method of claim 8, The supercooling system comprises an information transmission unit for visually or audibly transmitting warning information to a user by using the power stored in the power storage unit. The method according to claim 1 or 4, The supercooling system, characterized in that the wireless data transmission and reception path for the data transmission between the supercooling device and the cooling device. The method of claim 10, The supercooling device includes an input unit for supplying and blocking power supply, and the control unit of the supercooling device transmits the input and supply input of the power supply to the control unit of the cooling device through a wireless data transmission / reception path, and the control unit of the cooling device The super-cooling system, characterized in that for controlling the wireless power transmitter in accordance with the supply and cut-off input of the transmitted power supply. The method of claim 1, The cooling device includes a sub-cooling unit for turning on / off power transmission by the wireless power transmitter. The method of claim 12, The blocking portion is formed in the accommodating portion, the subcooling system characterized in that the on-off operation by the input and withdrawal into the receiving portion of the subcooling device. The method of claim 1, The cooling device has a supercooling system, characterized in that it comprises a power control unit for adjusting the power applied to the supercooling device. The method of claim 14, The cooling apparatus includes a sensing unit for sensing a load change of the subcooling apparatus, and the power control unit adjusts the power according to the sensing result of the sensing unit. The method of claim 15, The load variation is a subcooling system, characterized in that the subcooling device comprises a disconnection from the cooling device. The method of claim 1, Receiving portion is formed in the door of the cooling device, the supercooling system, characterized in that the receiving portion door for opening and closing the receiving portion is formed. The method according to claim 1 or 17, And the receiving portion has a position indicator for indicating the position at which the subcooling device is to be placed. The method of claim 18, And the position indicator has a receiving groove into which at least a portion of the subcooling device is inserted. The method of claim 18, And the position display unit comprises a wireless power transmitter.

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