WO2010079970A2 - Cooling apparatus - Google Patents

Abstract

The present invention relates to a cooling apparatus including a non-freezing apparatus which can be installed in a freezing chamber door of a refrigerator which is a general cooling apparatus without significantly modifying the construction of the cooling apparatus and which can stably store food in a non-frozen state. A cooling apparatus includes a cooling space supplied with the cool air, a door opening and closing the cooling space, an ice maker installed in the door, and a non-freezing apparatus located below the ice maker. The non-freezing apparatus is detachably mounted in the freezing chamber door without significantly modifying the construction of the general cooling apparatus, so that the food can be stably stored in the non-frozen state in the non- freezing apparatus. In addition, the non-freezing apparatus can be mounted in the freezing chamber door without interfering with the ice maker, the ice bank, etc.

Description

Cooling system

The present invention relates to a cooling device, and to a cooling device having a non-freezing device. More specifically, the cooling device which is provided in the cooling device to store food and beverages in a freeze-free state without particularly changing the configuration of a cooling device such as a conventional refrigerator, and in particular, in the case of a beverage, can easily prepare slush. Is about.

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 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 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 (air acts as an insulation). . 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 of an interior 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.

Japanese Patent Laid-Open No. 2001-4260 has a supercooling control that can refrigerate the stored product at a temperature below the freezing point during subcooling operation with a temperature detecting means and a control means for controlling the inside of the insulated open-air storage to a predetermined temperature set point. The refrigerator is starting. However, by simply controlling the rotation speed of the cold air circulation fan to adjust the temperature in the insulation chamber, there is no means to raise the temperature back to the set point in a short time when the temperature in the store drops below the set point. Therefore, when the time elapses while the temperature in the refrigerator drops below the set value, the storage items to be stored in the supercooled state are often frozen, and the frozen storage can not be thawed and stored again in the supercooled state. There is a problem that the stability to maintain is poor.

Korean Patent No. 10-850062 has a space for storing food and a storage compartment for cooling the space, and includes a cold air circulation space for indirectly cooling the food storage space, and an insulating layer for insulating the space between the cold air flow space and the space for supercooled food. The refrigerator which can accommodate this is disclosed. However, there is no configuration that can raise the temperature when the temperature in the refrigerator falls below the set temperature, there is the same problem that the stability to maintain a freezing state likewise falls.

Japanese Patent Laid-Open No. 2008-267646 discloses a freezer compartment equipped with a temperature control means capable of continuously and stepwise controlling the temperature from 0 ° C to the temperature of a freezer temperature zone, a supercooling chamber arranged in the freezer compartment to receive cold air in the freezer compartment, and a subcooling chamber. A refrigerator having a subcooling chamber having a control device for controlling a freezer compartment to maintain a supercooling state in which food stored in the refrigerator is not frozen at a temperature below a freezing point is disclosed. However, the temperature in the subcooling chamber is controlled by controlling the temperature of the freezing chamber or the replacement chamber in which the subcooling chamber is installed, and the temperature change of the temperature in the subcooling chamber is suppressed by closing the subcooling chamber to the freezing chamber or the replacement chamber. However, storing the food in the subcooled state by slowing the temperature fluctuation in the subcooling chamber by indirect cooling has a disadvantage in that it takes a long time until the food reaches the subcooled state. In addition, there is still a problem such that there is no configuration that can raise the temperature when the temperature in the refrigerator falls below the set temperature, likewise, the stability of maintaining a freezing state is inferior.

An object of the present invention is to provide a cooling device having a non-freezing device which is provided in the freezer door of the refrigerator, which is an existing cooling device, without stably changing the configuration of the existing cooling device, so that food can be stably stored in the freezing state. It is done.

In addition, an object of the present invention is to provide a cooling device having a non-freezing device having a damper to selectively introduce cold air from the cooling space, thereby more stably adjusting the temperature inside the device.

It is also an object of the present invention to provide a cooling device in which a non-freezing device is installed so that the movement of the damper does not interfere with other components installed in the freezer door.

In addition, an object of the present invention is to provide a cooling device installed in the freezer door so that the freezing device, the ice maker, and the ice bank do not interfere with each other.

In addition, the present invention is installed between the installation surface and the non-freezing device of the cooling device is spaced apart from each other to reduce the effect of the temperature of the installation surface of the cooling device on the temperature inside the non-freezing device is excellent cooling effect and can reduce the heat generation of the heater. An object of the present invention is to provide a cooling device.

In another aspect, the present invention is provided with a non-freezing device which can maintain a freezing state of food stably by maintaining a high temperature of the upper space where the freezing is started by independently controlling the temperature of the top and the bottom of the freezing device It is an object to provide a cooling device.

The present invention provides a cooling device comprising a cooling space provided with cold air, a door for opening and closing the cooling space, an ice maker installed in the door, and a non-freezing device located below the ice maker.

In another aspect of the present invention, there is provided a cooling device, characterized in that an ice bank for storing ice produced in the ice maker is provided between the ice maker and the non-freezing apparatus.

In still another aspect of the present invention, an ice bank provides a cooling device comprising an outer casing mounted to a door and a drawer sliding in the outer casing to receive ice.

In another aspect of the present invention, there is provided a cooling device corresponding to a size of a drawer on an upper surface of a non-freezing device.

In still another aspect of the present invention, there is provided a cooling apparatus, wherein the non-freezing apparatus and the door each include a mounting member engaged with each other to mount the non-freezing apparatus.

In another aspect of the present invention, the non-freezing device provides a cooling device, characterized in that the rear surface is spaced apart from the door.

Moreover, as another aspect of this invention, a non-freezing apparatus provides the cooling apparatus characterized by including the space | interval member for installing at intervals with the door at the back surface.

In still another aspect of the present invention, the non-freezing apparatus provides a cooling apparatus, wherein the upper space and the lower space are partitioned and maintained in different temperature regions, respectively.

Moreover, as another aspect of this invention, a freezing apparatus provides the cooling apparatus provided with the damper which adjusts introduction of cold air from a cooling space in the lower part.

In still another aspect of the present invention, a non-freezing apparatus provides a cooling apparatus, wherein a discharge hole for discharging a flow from a non-freezing apparatus to a cooling space is formed on a rear surface thereof.

In another aspect, the present invention provides a cooling space provided with cold air, a door for opening and closing a cooling space, an ice maker installed in a door, and installed in a door, and installed in an ice bank and a door positioned below the ice maker. It provides a cooling device comprising a non-freezing device located at the bottom of the ice bank.

In another aspect of the present invention, the cooling space is provided with cold air, the door for opening and closing the cooling space, the ice maker is installed in the door, the door is installed in the ice bank and the door located at the bottom of the ice maker, And a non-freezing device positioned at the bottom of the ice bank and having a damper for regulating the introduction of cold air from the cooling space.

In another aspect of the present invention, the damper provides a cooling device, characterized in that located in the lower portion of the non-freezing device.

In another aspect of the present invention, the cooling space is provided with cold air, the door for opening and closing the cooling space, the ice maker is installed in the door, the door is installed in the ice bank and the door located at the bottom of the ice maker, It is located in the lower portion of the ice bank, and provides a cooling apparatus comprising a non-freezing device having a discharge hole for discharging the flow to the cooling space on the back.

The cooling apparatus provided by the present invention can store food in a non-freezing state in a non-freezing apparatus by detachably installing a non-freezing apparatus in a freezer door without largely changing the configuration of an existing cooling apparatus.

In addition, the cooling device provided by the present invention can be equipped with a non-freezing device in the freezer door without causing interference with the ice maker, ice bank and the like.

In addition, in the cooling device provided by the present invention, a damper for introducing cold air into the non-freezing device is installed at the bottom of the non-freezing device, and other components such as an ice maker and an ice bank are installed at the top of the non-freezing device. Damper and other components do not cause interference.

In addition, the cooling device provided by the present invention, the non-freezing device is provided at a distance from the door, less affected by the temperature of the door or the temperature of the outside air, forming a discharge hole for discharging the flow on the back of the non-freezing device The discharged flow can flow through the gap.

1 is a view showing an embodiment of a thawing and freshness holding device according to the prior art;

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

3 is a diagram illustrating a supercooling process applied to a slush manufacturing container, a freezing device, and a cooling device according to the present invention;

4 is a view showing a process of preventing the formation of ice tuberculosis applied to the non-freezing apparatus according to the present invention,

5 is a view showing a cooling apparatus according to an embodiment of the present invention,

6 and 7 are an exploded perspective view of a non-freezing apparatus according to an embodiment of the present invention,

8 to 10 is a view showing a damper provided in the non-freezing apparatus according to an embodiment of the present invention,

11 is a view showing the rear space of the non-freezing apparatus according to an embodiment of the present invention,

12 is a perspective view of a non-freezing apparatus according to an embodiment of the present invention,

Figure 13 is a view showing the rear of the non-freezing apparatus according to an embodiment of the present invention,

14 and 15 are schematic views comparing heat transfer when a non-freezing device is installed in close contact with a cooling device and when spaced between the cooling devices is installed;

Figure 16 is a graph measuring the change in the internal temperature over time of installing the non-freezing device in close contact with the refrigerator door installed at intervals.

3 is a diagram illustrating a supercooling process applied to a non-freezing device and a cooling 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 is a view showing a process for preventing the formation of ice tuberculosis applied to the non-freezing 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 package containing the liquid, the fresh long-term storage of the package is possible by continuously supercooling the liquid in the package, By applying the above process, the enclosure can be maintained in a 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 view showing a door provided in the cooling device according to an embodiment of the present invention. In the cooling device according to the embodiment of the present invention, the freezing device 2000 is installed in the freezing chamber door 1100 of the cooling device. The freezer compartment door 1100 opens and closes a freezer compartment (not shown), and in the door 1100 of the refrigerator, a non-freezing device 2000, an ice bank 1600, and an ice maker 1700 are sequentially installed from the bottom. . The ice maker 1700 receives water and generates ice. When ice generation is completed in the ice maker 1700, the ice made by the ice maker 1700 is automatically or manually introduced into the ice bank 1600. When the ice is automatically introduced into the ice bank 1700 from the ice maker 1700, the ice maker 1700 is provided with a rotatable ice tray (not shown) in which the ice is generated. Rotate to drop down. The ice bank 1600 includes an outer casing 1610 for mounting to the freezer compartment door 1100 and a drawer 1620 that is retractably installed in the outer casing 1610. The outer casing 1610 includes an opening at an upper portion thereof to allow the ice falling from the ice maker 1700 to be introduced. Ice generated in the ice maker 1700 falls downward by the rotation of an ice tray (not shown), and passes through an opening formed in the outer casing 1610 of the ice bank 1600 to draw a drawer of the ice bank 1600. 1620. As the ice falls to the ice bank 1620, the ice bank 1620 impacts the ice bank 1620, and the impact may be transmitted to the freezer compartment door 1100 and the non-freezing apparatus 2000. Therefore, the non-freezing device 2000 includes a groove 2100 having a cross section larger than the cross section of the drawer 1620, so that when the ice falls into the drawer 1620, the drawer 1620 moves downward to reduce the impact. To help.

Protruding support parts (not shown) are formed at both sides of the freezer compartment door 1100, and hooks that are supported by support parts (not shown) on both sides of the non-freezing device 2000 and which can fix the non-freezing device 2000. A rib 2200 in shape is formed. The non-freezing device 2000 is fixed to the freezer compartment door 1100 by a hook-shaped rib 2200 and a support (not shown), and may be detachably installed from the freezer compartment door 1100. Since power should be supplied to the non-freezing device 2000, a power connector (not shown) connected to each other for power supply between the cooling device and the non-freezing device 2000 is preferably provided. The power connector (not shown) may be a contact connector similar to a battery charger formed at a position corresponding to each other of the cooling device and the non-freezing device 2000 and transferring power through the contact, or the cooling device and the non-freezing device 2000. Each power transmission cable is provided, and may be a port-type connector composed of a male and female pair to be engaged with each other at an end of the power transmission cable. In addition, the non-freezing device 2000 and the freezing compartment door 1100 may be fixed to each other in a non-removable manner by using a screw or the like. In this case, a separate power connector (not shown) is provided between the non-freezing device 2000 and the freezing compartment door 1100. In place of the general wires, power may be supplied from the cooling device to the non-freezing device 2000. On the other hand, if you want to display the operating state and the supercooling progress state of the non-freezing device 2000 through an external display (not shown) installed outside the cooling device 1000, the power connector (not shown) or the wire is a non-freezing device It is preferable to be configured to transmit electricity in both directions to transfer information from the PCB (not shown), which is a control unit for controlling the operation of the operation (2000) to the external display (not shown) or the control unit (not shown) of the cooling device.

6 and 7 are exploded perspective views of the non-freezing apparatus according to an embodiment of the present invention.

The non-freezing apparatus 2000 according to an embodiment of the present invention includes a casing 100 defining an inner space in which a container is stored and a door 200 for opening and closing the casing 100, and the freezing point of the refrigerator, such as a freezer. It is installed in a cooling device for storing food at a temperature of. The casing 100 distinguishes an external space, that is, a space in the cooling device 1000 in which the non-freezing device 2000 is installed and an internal space of the non-freezing device 2000, and forms an exterior of the non-freezing device 2000. Casings 110, 120, and outer casings 110, 120 include a front outer casing 110 and a rear outer casing 120. The front outer casing 110 constitutes the exterior of the front and bottom of the non-freezing apparatus, and the rear outer casing 120 constitutes the exterior of the rear and top of the non-freezing apparatus. The casing 100 allows a container for storing liquid to be stored with the top and the bottom positioned in different temperature zones, and more specifically, the bottom of the vessel is approximately the temperature range of the maximum ice crystal generation zone (about -1 ° C). ~ -5 ° C), and the top of the vessel is higher so that it can be located in the temperature range (about-1 ° C ~ 2 ° C) where ice crystals are not easily produced. To this end, the casing 100 has a lower space 100L which is a temperature range (about -1 ° C to -5 ° C) of the maximum ice crystal generation zone and a temperature range (about -1 ° C to 2 ° C) where ice crystals are not easily generated The upper space 100U. The upper space 100U and the lower space 100L are divided by the partition wall 140. The casing 100 has, in the outer casing 110, a lower casing 130 defining the lower space 100L together with the partition 130 and an upper casing 150 defining the upper space 100U together with the partition 140. ).

The cooling fan is located behind the lower space 100L so that the liquid stored in the lower portion of the vessel located in the lower space 100L reaches the maximum temperature range of the ice crystal generation zone (about -1 ° C to -5 ° C) and becomes supercooled. 170 is installed, a lower heater (not shown) for adjusting the temperature of the lower space (100L) is also installed. An upper heater (not shown) is installed around the upper casing 140 to maintain the upper portion of the vessel located in the upper space 100U in a temperature range (about -1 ° C to 2 ° C) in which ice crystals are not easily produced. In addition, the partition wall so as to prevent heat exchange between the upper space 100U and the lower space 100L as much as possible due to the forced flow generated by the cooling fan 170 between the upper space 100U and the lower space 100L having different temperatures. The separation membrane 142 of an elastic material is installed at 140. In addition, in order to fix the separation membrane 142 to the partition wall 140, pressing the separation membrane 142 at the top and bottom of the separation membrane 142, and includes a fixing plate 144 that can be fixed to the partition wall 140 with screws or the like. It is preferable.

On the other hand, the lower portion of the outer casing (110, 120) is provided with a heat insulating material 112 for insulating the outer space and the lower space (100L), the upper portion of the outer casing (110, 120) and the outer space and the upper space (100U). A heat insulator 122 is provided to insulate the heat. In addition, a power switch 182, a display unit 184, and the like are installed between the front outer casing 110 and the heat insulating material 122, and a power switch 182 between the rear outer casing 120 and the heat insulating material 122. The display unit 184, the upper and lower heaters (not shown), the PCB (not shown) for controlling the electrical equipment such as the flow fan 170 and the damper 190, the PCB installation unit 186 is installed. The rear outer casing 120 mounts an opening 124 and a PCB mounting portion 186 for installing a PCB so that the PCB mounting portion 186 can be detached with the outer casings 110 and 120 assembled. A PCB cover 124c may be further provided to cover the opening 124.

On the other hand, in order to prevent cold air flowing from the lower part of the rear space 100R to the upper part, and to lower the temperature of the upper space 100U, a partition is formed. The partition wall is formed by overlapping the ribs 120r formed on the rear outer casing 120 and the ribs 140r protruding rearward from the lower case 130 with the partition walls 140 on the lower case 130. Preferably, the lower portion of the upper case 150 also has a shape corresponding to the partition wall 140 on the upper portion of the lower case 130, and has ribs 150r protruding rearward, and thus, ribs 120r formed on the outer casing 120. ) And the ribs 140r formed on the partition wall 140 and the ribs 150r formed on the upper case 150 are preferably overlapped to form partition walls of the rear space 100R.

The door 200 is installed at the front of the front outer casing 110 to open and close the lower space 100L. The door 200 is fixed to the door panel 220 of the transparent or translucent material, the door casing 210 in the door casing 210, the door frame 230 and the door frame 230 to secure the door panel 220 together. It is mounted to the rear, and includes a gasket 240 for sealing between the door 200 and the front outer casing (110). The non-freezing apparatus according to an embodiment of the present invention includes a plurality of door panels 220, and each door panel 220 is disposed between the door casing 210 and the door frame 230 with a gap therebetween. It is possible to form an air layer between each door panel 220. The air layer not only compensates for the weak insulation of the door 200, but also prevents frost on the door 200, that is, the door panel 220. The gasket 240 is made of an elastic material, and seals a gap between the door 100 and the front outer casing 110 so that the cooling spaces 1300 and 1400 and the non-freezing device 2000 are mounted. ) Prevents heat exchange between the inside and the inside. That is, leakage of cold air or heat can be prevented.

Meanwhile, the rear space R is defined by the rear outer casing 120, the lower casing 130, and the upper casing 150, and the rear space R has a flow fan 170, a damper 190, and a lower heater. (Not shown) is installed, and in particular, the PCB installation unit 186 is detachably installed at the upper portion of the rear space R. Lower heater (not shown), upper heater (not shown), lower sensor (not shown), upper sensor (not shown), flow fan 170, damper 190, switch 182 and display 184 are wires Is connected to the PCB. The PCB is fixed in the PCB mounting portion 186, and then the PCB mounting portion 186 is fitted into a groove formed in the insulation 122 of the upper space through the opening 124 formed in the rear outer casing 120. The wires connecting the PCB and each electrical component are connected to the PCB with an extra length long enough to lead the PCB installation portion 186 through the opening 124 of the rear outer casing 120. Therefore, when repairing or replacing the PCB, there is no need to separate the front outer casing 110 and the rear outer casing 120, there is an advantage that the maintenance, repair is convenient. In addition, the lower casing 140 and the upper casing 150 are provided with grooves 146 and 156 for inserting electric wires connecting the PCB and the electrical equipment to the upper part of the lower casing 140 and the lower part of the upper casing 150, respectively. do. The upper part of the lower casing 140 and the lower part of the upper casing 150 may overlap and be fixed to each other, and the separator 142 described above may be disposed between the upper part of the lower casing 140 and the lower part of the upper casing 150. Or fixed plate 144 is located. In addition, after the PCB installation unit 186 is inserted into the heat insulating material 122 of the upper space in the rear outer casing 120, the opening 124 is closed using the PCB cover 124c. If cold air in the cooling space penetrates through the opening 124 during operation, there is a risk of lowering the temperature of the upper space 100U, which must be maintained at a temperature higher than the lower space 100L, as well as the upper space (not shown). There is a disadvantage to increase the amount of heat generated. Therefore, the opening 124 may be closed through the PCB cover 124c to increase energy efficiency, and to make the liquid subcooled more stably.

 8 to 10 are views showing a damper provided in the non-freezing apparatus according to an embodiment of the present invention. As described above, the damper 170 is installed in the rear space 100R (shown in FIG. 6), and the cold air flows into the rear space 100R (shown in FIG. 6) from the cooling space in which the freezing device 2000 is installed. Adjust The damper 170 rotates with respect to the frame 172 and the frame 172 installed in the rear outer casing 120 and opens or closes the opening in the frame 172. Damper 170 is connected to the PCB by a wire, the PCB controls the opening / closing of the damper 170 according to the temperature information of the lower space (100L) measured by the sensor (not shown).

11 is a view showing a rear space of the non-freezing apparatus according to an embodiment of the present invention, Figure 12 is a perspective view of the non-freezing apparatus according to an embodiment of the present invention. As described above, the rear space 100R is provided with a damper 190 to adjust the inflow of cold air. In addition, the flow fan 170 installed on the rear surface of the lower case 130 generates a forced flow, so that the air introduced into the rear space 100R flows into the lower space 100L, and the air in the lower space 100L again. It can be discharged to the rear space 100R. At the position where the flow fan 170 of the lower case 130 is installed, a discharge grill 172 is formed so that the flow generated by the flow fan 170 flows, from the rear space 100R to the lower space 100U. Form a flowing flow path. Further, first discharge holes 310a, 310b, 310c, and 310d for discharging flow from the lower space 100U to the rear space 100R are formed on the rear surface of the lower case 130. The first discharge holes 310 are formed at both side ends, and a total of four first discharge holes 310a, 310b, 310c, and 310d are formed, two up and down. The flow generated by the flow fan 170 flows into the lower space 100L through the discharge grill 172, and then is re-discharged to the first discharge holes 310a, 310b, 310c, and 310d located at both ends. The cooling passage is naturally formed in the lower space 100L. Meanwhile, a second discharge hole 320 is formed below the lower space 100L to discharge the flow discharged from the first discharge holes 310a, 310b, 310c, and 310d into the cooling space. At this time, the flow discharged through the first discharge hole (310a, 310b, 310c, 310d) flows back to the center portion where the flow fan 170 is located to flow back into the lower space (100U) to prevent the flow fan ( Partition walls 330a and 330b are installed between the 170 and the first discharge holes 310a, 310b, 310c and 310d.

In addition, a part of the flow that cools the liquid stored in the container through the first discharge holes 310a, 310b, 310c, and 310d and cools the liquid stored in the container is located in the lower portion of the lower space 100L ( It is discharged directly to the cooling space through the 340. The third discharge holes 340 are preferably formed in the same number on the left and right sides to form a symmetric flow path.

Therefore, when the damper 190 is opened and the flow fan 170 is operated, cold air flows into the rear space 100R from the cooling space through the damper 190, and then the discharge grill 172 from the rear space 100R. Cooling the lower part of the container that flows into the lower space (100L) to store the liquid stored in the non-freezing apparatus. A part of the flow that cools the liquid while exchanging heat with the liquid stored in the container is directly discharged to the cooling space through the third discharge holes 340 located on both sides of the lower part of the lower space 100L, and the others are the first discharge holes at both ends. It is discharged to the rear space 100R through 310a, 310b, 310c, 310d, and then to the outside (cooling space) through the second discharge holes 320a and 320b.

The lower case 130 further includes fourth discharge holes 350a and 350b positioned inside the partition walls 330a and 330b. That is, the fourth discharge holes 350a and 350b are formed with the first discharge holes 310a, 310b, 310c and 310d and the second discharge holes 320a and 320b and the partition walls 330a and 330b interposed therebetween. When the flow fan 170 is operated while the damper 190 is closed, the flow discharged from the rear space 100R through the discharge grill 172 to the lower space 100L circulates in the lower space 100L. The liquid is discharged to the rear space 100R through the fourth discharge holes 350a and 350b again. That is, when it is determined that the temperature of the lower space 100L reaches a temperature suitable for storing the liquid in the supercooled state, the discharge grill 172 and the fourth discharge holes 350a and 350a are opened in the state where the damper 190 is closed. Through this, a circulating flow is formed only between the lower space 100L and the rear space 100R, and cold air is no longer introduced from the external cooling space.

Meanwhile, referring to FIG. 12, a drip tray 116 is formed at a portion where the door 200 and the front outer case 110 contact each other. The drip tray 126 freezes dew or moisture formed in the container on the door 200 or the front outer case 110 so that a gap occurs without the door 200 and the outer case 110 contacting each other properly. Intrusion is prevented from dropping the temperature of the lower space 100L. That is, dew formed on the door 200 or the outer case 110 is lowered and collected into the drip tray 116, whereby frost is generated or water is frozen on the lower surface of the outer case 110 in contact with the door 200. To prevent them.

13 is a view showing the rear of the non-freezing apparatus according to an embodiment of the present invention. Fifth discharge holes 360a, 360b, and 360c for discharging the flow from the rear space 100R to the cooling space are formed at the rear center side of the rear outer case 120. Some of the cold air introduced into the rear space 100R from the cooling space through the damper 190 is not introduced into the lower space 100L through the discharge grill 172 but through the fifth discharge holes 360a, 360b, and 360c. Exit back to the cooling space.

Meanwhile, a plurality of ribs 125 are formed on the rear surface of the rear outer case 120. Rib 125 is to give a distance between the rear surface and the mounting surface of the rear outer case 120, when the non-freezing device 2000 is installed in the cooling device 1000, as in the embodiment of the present invention, the cooling device The inner surface of the 1000 and the rear outer case 120 serves to maintain the gap between the back. The inner surface of the cooling apparatus 1000 is meant to include the inner surfaces of the freezer compartment door 1100 and the refrigerating compartment door 1200. Meanwhile, in order for the flow discharged to the fifth discharge holes 360a, 360b, and 360c formed at the rear center side of the rear outer case 120 to be guided to the lower part of the rear case 120, the first case of the rear outer case 120 is formed. 5 A separate rib 126 is formed to surround the discharge holes 360a, 360b, and 360c. The separate ribs 126 are formed to surround the remaining three directions except for the lower portions of the fifth discharge holes 360a, 360b, and 360c, so that the flow discharged through the fifth discharge holes 360a, 360b, and 360c is naturally free. Guided below the freezing device 2000.

14 and 15 are schematic views comparing heat transfer when the non-freezing apparatus is installed in close contact with the cooling apparatus and when the non-freezing apparatus is installed at an interval between the cooling apparatuses. As shown in FIG. 20, when the non-freezing device 2000 is in close contact with the cooling device 1000, the temperature inside the cooling device 1000 and the surface where the non-freezing device 2000 comes into contact with each other exchange heat to each other. The inner surface of 1000 and the contact surface of the non-freezing device 2000 have the same temperature. However, when the non-freezing apparatus 2000 is installed at intervals by the ribs 125, the non-freezing apparatus 2000 may be maintained at a temperature separate from the inner surface of the cooling apparatus 1000. Therefore, the influence of the outside air outside the cooling device on the non-freezing device 2000 can be reduced. In addition, after the temperature inside the non-freezing apparatus 2000 drops to a temperature at which the liquid can be stored in a supercooled state, the amount of heat generated by the upper and lower heaters (not shown) installed in the non-freezing apparatus 2000 can be reduced, thereby freezing the apparatus. The energy efficiency of 2000 can be improved. When the non-freezing device 2000 is in close contact with the cooling device 1000, since there is heat transfer to the cooling device 1000, the heater is operated to maintain the temperature inside the non-freezing device 2000 in a predetermined temperature range. The heat generated by the heater is used to raise the temperature of the inner surface of the cooling apparatus 1000 in close contact with the non-freezing apparatus 2000. Therefore, the installation of the non-freezing device 2000 at intervals from the cooling device 1000 may quickly make the liquid in a supercooled state, and further increase the energy efficiency of the non-freezing device 2000.

FIG. 16 is a graph illustrating a change in the internal temperature with time of installing the non-freezing device in close contact with the refrigerator door and at intervals. As shown in the graph, when the non-freezing device 2000 is installed at a distance from the cooling device 1000 (when the adhesion is low), it can be seen that the cooling is faster.

Claims (14)

1. A cooling space provided with cold air;

   A door for opening and closing the cooling space;

   An ice maker installed on the door; And

   And a non-freezing device positioned below the ice maker.
2. The method of claim 1,

   And an ice bank for storing the ice produced by the ice maker between the ice maker and the non-freezing apparatus.
3. The method of claim 2,

   And the ice bank includes an outer casing mounted to the door and a drawer that slides in the outer casing to receive the ice.
4. The method of claim 3,

   Cooling apparatus, characterized in that the groove corresponding to the size of the drawer is provided on the upper surface of the non-freezing apparatus.
5. The method of claim 1,

   The non-freezing device and the door are respectively engaged with each other, the mounting member for mounting the non-freezing device; cooling device comprising a.
6. The method of claim 1,

   The non-freezing device is a cooling device characterized in that the rear surface is provided at a distance from the door.
7. The method of claim 1,

   The non-freezing apparatus is provided with the space | interval member for installing at intervals with a door at the back surface, The cooling apparatus characterized by the above-mentioned.
8. The method of claim 1,

   The freezing apparatus is characterized in that the upper space and the lower space is partitioned, each of which is maintained in a different temperature region.
9. The method of claim 1,

   A freezing apparatus is provided with the damper which controls the introduction of cold air from a cooling space in the lower part, The cooling apparatus characterized by the above-mentioned.
10. The method of claim 1,

    The freezing apparatus is a cooling apparatus characterized by the discharge hole which discharges a flow from a nonfreezing apparatus to a cooling space in the back surface.
11. A cooling space provided with cold air;

    A door for opening and closing the cooling space;

    An ice maker installed on the door;

    An ice bank installed in the door and positioned below the ice maker; And

    And a non-freezing device installed in the door and positioned below the ice bank.
12. A cooling space provided with cold air;

    A door for opening and closing the cooling space;

    An ice maker installed on the door;

    An ice bank installed in the door and positioned below the ice maker; And

    And a non-freezing device installed in the door and positioned below the ice bank and having a damper for controlling the introduction of cold air from the cooling space.
13. The method of claim 12,

    The damper is located in the lower part of the non-freezing device.
14. A cooling space provided with cold air;

    A door for opening and closing the cooling space;

    An ice maker installed on the door;

    An ice bank installed in the door and positioned below the ice maker; And

    And a non-freezing apparatus installed in the door and positioned below the ice bank, and having a discharge hole for discharging the flow to the cooling space on the rear surface thereof.

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