US20120011880A1 - Cooling apparatus - Google Patents

Cooling apparatus Download PDF

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Publication number
US20120011880A1
US20120011880A1 US13/143,605 US201013143605A US2012011880A1 US 20120011880 A1 US20120011880 A1 US 20120011880A1 US 201013143605 A US201013143605 A US 201013143605A US 2012011880 A1 US2012011880 A1 US 2012011880A1
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US
United States
Prior art keywords
freezing
cooling
freezing apparatus
space
door
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Abandoned
Application number
US13/143,605
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English (en)
Inventor
Won-Young Chung
Jae-Hyun Soh
Deok-Hyun Youn
Cheol-Hwan Kim
Ju-Hyun Kim
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LG Electronics Inc
Original Assignee
LG Electronics Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by LG Electronics Inc filed Critical LG Electronics Inc
Priority claimed from PCT/KR2010/000095 external-priority patent/WO2010079972A2/ko
Assigned to LG ELECTRONICS INC. reassignment LG ELECTRONICS INC. ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: CHUNG, WON-YOUNG, KIM, CHEOL-HWAN, SOH, JAE-HYUN, YOUN, DEOK-HYUN, KIM, JU-HYUN
Publication of US20120011880A1 publication Critical patent/US20120011880A1/en
Abandoned legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25C—PRODUCING, WORKING OR HANDLING ICE
    • F25C1/00—Producing ice
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D23/00—General constructional features
    • F25D23/02—Doors; Covers
    • F25D23/04—Doors; Covers with special compartments, e.g. butter conditioners
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25C—PRODUCING, WORKING OR HANDLING ICE
    • F25C5/00—Working or handling ice
    • F25C5/20—Distributing ice
    • F25C5/22—Distributing ice particularly adapted for household refrigerators
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D11/00—Self-contained movable devices, e.g. domestic refrigerators
    • F25D11/02—Self-contained movable devices, e.g. domestic refrigerators with cooling compartments at different temperatures
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D23/00—General constructional features
    • F25D23/12—Arrangements of compartments additional to cooling compartments; Combinations of refrigerators with other equipment, e.g. stove
    • F25D23/126—Water cooler
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D29/00—Arrangement or mounting of control or safety devices
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25C—PRODUCING, WORKING OR HANDLING ICE
    • F25C2301/00—Special arrangements or features for producing ice
    • F25C2301/002—Producing ice slurries
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25C—PRODUCING, WORKING OR HANDLING ICE
    • F25C2600/00—Control issues
    • F25C2600/04—Control means
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D2323/00—General constructional features not provided for in other groups of this subclass
    • F25D2323/02—Details of doors or covers not otherwise covered
    • F25D2323/023—Door in door constructions
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D2700/00—Means for sensing or measuring; Sensors therefor
    • F25D2700/12—Sensors measuring the inside temperature

Definitions

  • the present invention relates to a cooling apparatus including a non-freezing apparatus, and, more particularly to, a cooling apparatus including a non-freezing apparatus which can be provided in a cooling apparatus such as a general refrigerator without significantly modifying the construction of the cooling apparatus and which can store food and beverages in a non-frozen state and easily make slush particularly in the beverages.
  • Supercooling means the phenomenon that a molten object or a solid is not changed although it is cooled to a temperature below the phase transition temperature in an equilibrium state.
  • a material has a stable state at every temperature. If the temperature is slowly changed, the constituent elements of the material can follow the temperature changes, maintaining the stable state at each temperature. However, if the temperature is suddenly changed, since the constituent elements cannot be changed to the stable state at each temperature, the constituent elements maintain a stable state of the initial temperature, or some of the constituent elements fail to be changed to a state of the final temperature.
  • an electrostatic atmosphere is made in a refrigerator and meat and fish are thawed in the refrigerator at a minus temperature.
  • meat and fish are thawed in the refrigerator at a minus temperature.
  • fruit is kept fresh in the refrigerator.
  • the supercooling phenomenon indicates the phenomenon that a molten object or a solid is not changed although it is cooled to a temperature below the phase transition temperature in an equilibrium state.
  • This technology includes Korean Patent Publication No. 2000-0011081 titled “Electrostatic field processing method, electrostatic field processing apparatus, and electrodes therefor”.
  • FIG. 1 is a view of an example of a conventional thawing and freshness-keeping apparatus.
  • a keeping-cool room 1 is composed of a thermal insulator 2 and an outer wall 5 .
  • a mechanism (not shown) controlling a temperature inside the room 1 is installed therein.
  • a metal shelf 7 installed in the room 1 has a two-layer structure. Target objects to be thawed or freshness-kept and ripened such as vegetables, meat and marine products are loaded on the respective layers.
  • the metal shelf 7 is insulated from the bottom of the room 1 by an insulator 9 .
  • a high voltage generator 3 can generate 0 to 5000 V of DC and AC voltages, an insulation plate 2 a such as vinyl chloride, etc. is covered on the inside of the thermal insulator 2 .
  • a high-voltage cable 4 outputting the voltage of the high voltage generator 3 is connected to the metal shelf 7 after passing through the outer wall 5 and the thermal insulator 2 .
  • a safety switch 13 (see FIG. 2 ) is turned off to intercept the output of the high voltage generator 3 .
  • FIG. 2 is a circuit configuration view of the high voltage generator 3 .
  • 100 V of AC is supplied to a primary side of a voltage regulation transformer 15 .
  • Reference numeral 11 represents a power lamp and 19 a working state lamp.
  • a relay 14 is operated. This state is displayed by a relay operation lamp 12 .
  • Relay contact points 14 a , 14 b and 14 c are closed by the operation of the relay 14 , and 100 V of AC is applied to the primary side of the voltage regulation transformer 15 .
  • the applied voltage is regulated by a regulation knob 15 a on a secondary side of the voltage regulation transformer 15 , and the regulated voltage value is displayed on a voltmeter.
  • the regulation knob 15 a is connected to a primary side of a boosting transformer 17 on the secondary side of the voltage regulation transformer 15 .
  • the boosting transformer 17 boosts the voltage at a ratio of 1:50. For example, when 60 V of voltage is applied, it is boosted to 3000 V.
  • One end O 1 of the output of the secondary side of the boosting transformer 17 is connected to the metal shelf 7 insulated from the keeping-cool room 1 through the high-voltage cable 4 , and the other end O 2 of the output is grounded. Moreover, since the outer wall 5 is grounded, if the user touches the outer wall 5 of the keeping-cool room 1 , he/she does not get an electric shock. Further, in FIG. 1 , when the metal shelf 7 is exposed in the room 1 , it should be maintained in an insulated state in the room 1 . Thus, the metal shelf 7 needs to be separated from the wall of the room 1 (the air performs an insulation function).
  • the insulation plate 2 a is attached to the inner wall to prevent drop of the applied voltage.
  • an electric field atmosphere is produced in the entire room 1 .
  • an electric field or a magnetic field is applied to the received object to be cooled, such that the received object enters a supercooled state. Accordingly, a complicated apparatus for producing the electric field or the magnetic field should be provided to keep the received object in the supercooled state, and the power consumption is increased during the production of the electric field or the magnetic field.
  • the apparatus for producing the electric field or the magnetic field should further include a safety device (e.g., an electric or magnetic field shielding structure, an interception device, etc.) for protecting the user from high power, when producing or intercepting the electric field or the magnetic field.
  • a safety device e.g., an electric or magnetic field shielding structure, an interception device, etc.
  • Japanese Patent Publication No. 2001-4260 discloses a supercooling control refrigerator which includes a temperature detection means and a control means controlling the temperature at a given set temperature in an openable/closable thermal insulation unit and which keeps the goods cold at a temperature below the freezing point during the supercooling operation.
  • the refrigerator controls the rotation number of a cool air circulation fan to adjust the temperature in the thermal insulation unit, if the temperature in the unit is reduced to a temperature below the set temperature, there is no means for raising the temperature to the set temperature within a short time.
  • the goods intended to be stored in a supercooled state are frozen.
  • the frozen goods cannot be thawed and stored again in the supercooled state.
  • the refrigerator has low stability in maintaining a non-frozen state.
  • Korean Patent Registration No. 10-850062 describes a refrigerator having a space for receiving food and a storing room for cooling the space, the refrigerator including a cool air flowing space directly cooling the food receiving space and a thermal insulation layer insulating the cool air flowing space from the space, and storing the food in a supercooled state.
  • the refrigerator also has low stability in maintaining a non-frozen state.
  • Japanese Patent Publication No. 2008-267646 discloses a refrigerator with a supercooling room which includes a freezing chamber with a temperature control means therein to continuously adjust the temperature between 0° C. and a temperature of a freezing temperature zone by stages, the supercooling room disposed in the freezing chamber and receiving the cool air from the freezing chamber, and a control apparatus controlling the freezing chamber so that the food stored in the supercooling room can be maintained in a supercooled state at a temperature below the freezing point without being frozen.
  • the temperature of the freezing chamber or a switching chamber in which the supercooling room is installed is controlled to adjust the temperature of the supercooling room.
  • the supercooling room is sealed with respect to the freezing chamber or the switching chamber such that a temperature change in the supercooling room is limited.
  • the refrigerator when the food is stored in the supercooled state by slowing down the temperature change in the supercooling room by indirect cooling, it takes a long time for the food to reach the supercooled state. Moreover, if the temperature in the refrigerator is reduced to a temperature below a set temperature, there is no construction for raising the temperature. Accordingly, the refrigerator also has low stability in maintaining a non-frozen state.
  • An object of the present invention is to provide a cooling apparatus including a non-freezing apparatus which can be installed in a refrigerating chamber or a refrigerating chamber door and stably store food in a non-frozen state.
  • Another object of the present invention is to provide a cooling apparatus which has a passage for introducing the cool air from a freezing chamber into a non-freezing apparatus, so that a non-freezing apparatus located in a refrigerating chamber can store food in a supercooled state.
  • a further object of the present invention is to provide a cooling apparatus including a non-freezing apparatus which can stably adjust the temperature inside the non-freezing apparatus by selectively introducing the cool air from a freezing chamber using a damper.
  • a still further object of the present invention is to provide a cooling apparatus including a non-freezing apparatus which can independently control the temperature of upper and lower portions of the non-freezing apparatus to maintain the temperature of the upper space in which the freezing starts to be higher, thereby stably maintaining food in a non-frozen state.
  • a cooling apparatus including: a freezing chamber; a refrigerating chamber; a freezing chamber door; a refrigerating chamber door; a bulkhead separating the freezing chamber and the refrigerating chamber; a non-freezing apparatus installed in the freezing chamber or the freezing chamber door and storing food in a non-frozen state; and a supplementary non-freezing apparatus installed in the refrigerating chamber or the refrigerating chamber door and storing food in a non-frozen state.
  • the non-freezing apparatus is spaced apart from the refrigerating chamber or the refrigerating chamber door by a given gap.
  • the non-freezing apparatus is detachably installed in the refrigerating chamber or the refrigerating chamber door.
  • the cooling apparatus further includes a passage for introducing the cool air from the freezing chamber into the non-freezing apparatus.
  • the cooling apparatus further includes a bulkhead separating the freezing chamber and the refrigerating chamber, and an opening portion formed in the bulkhead to introduce the cool air from the freezing chamber into the non-freezing apparatus.
  • the cooling apparatus further includes a cooling passage guide duct connected to the opening portion and guiding the cool air to the non-freezing apparatus.
  • the non-freezing apparatus includes a control unit controlling an upper space and a lower space at different temperatures, respectively.
  • the non-freezing apparatus includes a damper controlling the cool air introduced into the non-freezing apparatus.
  • the cooling apparatus further includes a cooling passage guide duct guiding the cool air from the freezing chamber to the damper.
  • a cooling apparatus including: a freezing chamber; a refrigerating chamber; a bulkhead separating the freezing chamber and the refrigerating chamber; a freezing chamber door; a refrigerating chamber door; and a non-freezing apparatus installed in the refrigerating chamber or the refrigerating chamber door and storing food in a non-frozen state.
  • the cooling apparatus includes a cooling passage passing through the bulkhead and introducing the cool air from the freezing chamber into the non-freezing apparatus.
  • an upper space and a lower space of the non-freezing apparatus are controlled at different temperatures, respectively.
  • cooling passage is connected to the lower space.
  • the non-freezing apparatus includes a separation film preventing the cool air introduced from the freezing chamber from flowing into the upper space. Still furthermore, the non-freezing apparatus includes a discharge hole for discharging the flow from the non-freezing apparatus to the refrigerating chamber. Still furthermore, the non-freezing apparatus includes a flow fan producing a forcible flow.
  • the cooling apparatus further includes a damper controlling the inflow of the cool air from the cooling passage to the non-freezing apparatus.
  • the damper is installed at a lower portion of the non-freezing apparatus.
  • the damper is installed on the bulkhead.
  • a cooling apparatus including: a freezing chamber; a refrigerating chamber; a freezing chamber door; a refrigerating chamber door; a bulkhead separating the freezing chamber and the refrigerating chamber; a non-freezing apparatus installed in the refrigerating chamber or the refrigerating chamber door and storing food in a non-frozen state; and a damper controlling the inflow of the cool air from the freezing chamber to the non-freezing apparatus.
  • the non-freezing apparatus includes an upper space and a lower space controlled at different temperatures, respectively, and a lower space located at the rear of the upper space and the lower space, and the damper is installed in the rear space.
  • the non-freezing apparatus since the non-freezing apparatus is detachably mounted in the refrigerating chamber or the refrigerating chamber door without significantly modifying the construction of the general cooling apparatus, the food can be stably stored in the non-frozen state in the non-freezing apparatus.
  • the non-freezing apparatus since the lower space is cooled by the cool air introduced from the freezing chamber and the upper space is cooled by the atmosphere of the refrigerating chamber, it is possible to reduce a heating value of a heater which is operated to maintain the temperature of the upper space to be higher than that of the lower space.
  • the non-freezing apparatus of the cooling apparatus provided by the present invention includes the separation film formed between the upper space having a high temperature and the lower space having a low temperature to limit the heat exchange between the upper space and the lower space, thereby stably maintaining a liquid in the supercooled state.
  • the non-freezing apparatus of the cooling apparatus provided by the present invention includes the flow fan producing the forcible flow, so that a liquid contained in a container can have the utmost uniform temperature distribution.
  • the non-freezing apparatus of the cooling apparatus provided by the present invention is detachable from the cooling apparatus. If the non-freezing apparatus is not used, the corresponding cooling space can be used as a general refrigerating or freezing storage space.
  • FIG. 1 is a view of an example of a conventional thawing and freshness-keeping apparatus.
  • FIG. 2 is a circuit configuration view of a high voltage generator.
  • FIG. 3 is a view showing a supercooling process applied to a slush making container, a non-freezing apparatus and a cooling apparatus according to the present invention.
  • FIG. 4 is a view showing a process of preventing the ice crystal nucleus formation, which is applied to the non-freezing apparatus according to the present invention.
  • FIG. 5 is a view showing a state where a non-freezing apparatus provided in a cooling apparatus according to an embodiment of the present invention is mounted in a freezing chamber.
  • FIG. 6 is a view showing a state where the non-freezing apparatus provided in the cooling apparatus according to the embodiment of the present invention is mounted in a refrigerating chamber.
  • FIG. 7 is a view showing a state where the non-freezing apparatus provided in the cooling apparatus according to the embodiment of the present invention is mounted in a freezing chamber door.
  • FIG. 8 is a view showing a state where the non-freezing apparatus provided in the cooling apparatus according to the embodiment of the present invention is mounted in a refrigerating chamber door.
  • FIGS. 9 and 10 are exploded perspective views of the non-freezing apparatus according to the embodiment of the present invention.
  • FIGS. 11 to 13 are views of a damper provided in the non-freezing apparatus according to the embodiment of the present invention.
  • FIG. 14 is a view of a rear space of the non-freezing apparatus according to the embodiment of the present invention.
  • FIG. 15 is a perspective view of the non-freezing apparatus according to the embodiment of the present invention.
  • FIG. 16 is a view of the rear of the non-freezing apparatus according to the embodiment of the present invention.
  • FIGS. 17 and 18 are schematic views showing the heat transfer comparison, when the non-freezing apparatus is closely attached to the cooling apparatus and when the non-freezing apparatus is spaced apart from the cooling apparatus by a given gap.
  • FIG. 19 is a graph showing changes in the internal temperature versus the time, when the non-freezing apparatus is closely attached to the cooling apparatus and when the non-freezing apparatus is spaced apart from the cooling apparatus by a given gap.
  • FIG. 3 is a view showing a supercooling process applied to a non-freezing apparatus and a cooling apparatus according to the present invention. As illustrated in FIG. 3 , a container C containing a liquid L is cooled in a cooling space S.
  • a cooling temperature of the cooling space S is lowered from a room temperature to a temperature below 0° C. (the phase transition temperature of water) or a temperature below the phase transition temperature of the liquid L. While the cooling is carried out, it is intended to maintain the water or the liquid L in a supercooled state at a temperature below the maximum ice crystal formation zone (about ⁇ 1° C. to ⁇ 5° C.) of the water in which the formation of ice crystals is maximized, or at a cooling temperature below the maximum ice crystal formation zone of the liquid L.
  • the liquid L is evaporated during the cooling such that vapor is introduced into a gas Lg (or a space) in the container C.
  • the gas Lg may be supersaturated due to the evaporated vapor.
  • the container C may selectively include the cover Ck. If the container C includes the cover Ck, it can prevent, to some extent, the cool air from being introduced directly from the cooling space or from reducing the temperature of the surface of the liquid L or the temperature of the gas Lg thereon.
  • the cooling temperature reaches or exceeds a temperature of the maximum ice crystal formation zone of the liquid L
  • the vapor in the gas Lg or the water drops on the inner wall of the container C may be frozen.
  • the condensation occurs in a contact portion of the surface Ls of the liquid L and the inner wall of the container C (almost the same as the cooling temperature of the cooling space S) such that the condensed liquid L may form ice crystal nucleuses which are ice crystals.
  • the liquid L is released from the supercooled state and caused to be frozen. That is, the supercooling of the liquid L is released.
  • the liquid L may be released from the supercooled state and caused to be frozen.
  • the non-freezing apparatus of the present invention applies or supplies energy (e.g., thermal energy) to the container C received in the cooling space S and the liquid L to control the temperature of the gas Lg and the liquid L, so that the liquid L can be maintained in a non-frozen state, i.e., a supercooled state below its phase transition temperature.
  • the gas Lg is located at a top layer portion of the liquid L in contact therewith.
  • it is defined as a liquid top layer portion (or received object top layer portion).
  • the liquid top layer portion may be an oil layer which can float in the liquid L or an object which contains plastic or other resin, in addition to the liquid Lg.
  • the liquid L is described as an example.
  • the present invention can be applied to general received objects such as meat, fish, vegetables, fruit, etc.
  • FIG. 4 is a view showing a process of preventing the ice crystal nucleus formation, which is applied to the non-freezing apparatus according to the present invention.
  • the energy is applied to at least the gas Lg or the surface Ls of the liquid L so that the temperature of the gas Lg or the surface Ls of the liquid L can be higher than a temperature of the maximum ice crystal formation zone of the liquid L, more preferably, the phase transition temperature of the liquid L.
  • the temperature of the surface Ls of the liquid L is maintained higher than a temperature of the maximum ice crystal formation zone of the liquid L, more preferably, the phase transition temperature of the liquid L.
  • the liquid L in the container C maintains the supercooled state at a temperature below its phase transition temperature or a temperature below its maximum ice crystal formation zone.
  • the cooling temperature in the cooling space S is a considerably low temperature, e.g., ⁇ 20° C.
  • the energy is applied to an upper portion of the container C
  • the liquid L which is the received object may not be able to maintain the supercooled state.
  • the energy should be applied to a lower portion of the container C to some extent.
  • the temperature of the upper portion of the container C can be maintained higher than the phase transition temperature or a temperature of the maximum ice crystal formation zone.
  • the temperature of the liquid L in the supercooled state can be adjusted by the energy applied to the lower portion of the container C and the energy applied to the upper portion of the container C.
  • the liquid L has been described as an example with reference to FIGS. 3 and 4 .
  • the received object when the liquid in the received object is continuously supercooled, the received object can be kept fresh for an extended period of time.
  • the received object can be maintained in the supercooled state at a temperature below the phase transition temperature via the above process.
  • the received object may include meat, vegetables, fruit and other food as well as the liquid.
  • the energy used in the present invention may be thermal energy, electric or magnetic energy, ultrasonic-wave energy, light energy, and so on.
  • FIG. 5 is a view showing a state where a non-freezing apparatus provided in a cooling apparatus according to an embodiment of the present invention is mounted in a freezing chamber.
  • the cooling apparatus 1000 is an apparatus supplying the cool air into a cooling space 1300 and 1400 using a cooling cycle.
  • FIG. 5 illustrates a state where the non-freezing apparatus 2000 is installed in the freezing chamber 1300 of a side-by-side refrigerator which is an example of the cooling apparatus 1000 .
  • the cooling space 1300 and 1400 in the cooling apparatus 1000 is divided into the freezing chamber 1300 and a refrigerating chamber 1400 by a bulkhead 1500 .
  • Support portions are formed on both sides of the freezing chamber 1300 to protrude therefrom, and hook-shaped ribs 2200 supported by the support portions (not shown) and fixing the non-freezing apparatus 2000 are formed on both side surfaces of the non-freezing apparatus 2000 .
  • the non-freezing apparatus 2000 is fixed in the freezing chamber 1300 by the hook-shaped ribs 2200 and the support portions (not shown) and may be detachable from the freezing chamber 1300 like other general shelves.
  • the non-freezing apparatus 2000 needs power supply.
  • power connectors are provided between the cooling apparatus 1000 and the non-freezing apparatus 2000 and connected to each other to supply power.
  • the power connectors may be contact-type connectors such as battery chargers formed in the corresponding positions of the cooling apparatus 1000 and the non-freezing apparatus 2000 and transferring power through the contact, or a pair of female and male port-type connectors engaged with ends of power transfer cables provided in the cooling apparatus 1000 and the non-freezing apparatus 2000 , respectively. Additionally, the non-freezing apparatus 2000 may be fixed to the freezing chamber 1300 using screws or the like not to be detached therefrom. In this situation, not a separate power connector (not shown) but a general electric wire is provided between the non-freezing apparatus 2000 and the freezing chamber 1300 to supply power from the cooling apparatus 1000 to the non-freezing apparatus 2000 .
  • the power connector (not shown) or the electric wire to transmit electricity in two ways so as to transfer information from a PCB (not shown) which is a control unit controlling the operation of the non-freezing apparatus 2000 to the external display (not shown) or a control unit (not shown) of the cooling apparatus 1000 .
  • FIG. 6 is a view showing a state where the non-freezing apparatus provided in the cooling apparatus according to the embodiment of the present invention is mounted in the refrigerating chamber.
  • the cooling apparatus 1000 supplies the cool air into the cooling space 1300 and 1400 using the cooling cycle.
  • FIG. 6 illustrates a state where the non-freezing apparatus 2000 is installed in the refrigerating chamber 1400 of the side-by-side refrigerator which is the example of the cooling apparatus 1000 .
  • the non-freezing apparatus 2000 mounted in the refrigerating chamber 1400 may be further mounted in addition to the non-freezing apparatus 2000 mounted in the freezing chamber 1300 or may be mounted alone in the refrigerating chamber 1400 .
  • the cooling space 1300 and 1400 in the cooling apparatus 1000 is divided into the freezing chamber 1300 and the refrigerating chamber 1400 by the bulkhead 1500 .
  • Support portions (not shown) are formed on both sides of the refrigerating chamber 1400 to protrude therefrom, and hook-shaped ribs 2200 supported by the support portions (not shown) and fixing the non-freezing apparatus 2000 are formed on both side surfaces of the non-freezing apparatus 2000 .
  • the non-freezing apparatus 2000 is fixed in the refrigerating chamber 1400 by the hook-shaped ribs 2200 and the support portions (not shown) and may be detachable from the refrigerating chamber 1400 like other general shelves.
  • the non-freezing apparatus 2000 needs power supply.
  • power connectors are provided between the cooling apparatus 1000 and the non-freezing apparatus 2000 and connected to each other to supply power.
  • the power connectors (not shown) may be contact-type connectors such as battery chargers formed in the corresponding positions of the cooling apparatus 1000 and the non-freezing apparatus 2000 and transferring power through the contact, or a pair of female and male port-type connectors engaged with ends of power transfer cables provided in the cooling apparatus 1000 and the non-freezing apparatus 2000 , respectively.
  • the non-freezing apparatus 2000 may be fixed to the refrigerating chamber 1400 using screws or the like not to be detached therefrom.
  • a separate power connector not shown
  • a general electric wire is provided between the non-freezing apparatus 2000 and the refrigerating chamber 1400 to supply power from the cooling apparatus 1000 to the non-freezing apparatus 2000 .
  • the power connector not shown
  • the electric wire it is preferable to configure the power connector (not shown) or the electric wire to transmit electricity in two ways so as to transfer information from a PCB (not shown) which is a control unit controlling the operation of the non-freezing apparatus 2000 to the external display (not shown) or a control unit (not shown) of the cooling apparatus 1000 .
  • the refrigerating chamber 1400 is maintained between a temperature above 0° C. and ⁇ 2° C. such that a liquid cannot be frozen. Therefore, when the non-freezing apparatus 2000 is installed not in the freezing chamber 1300 but in the refrigerating chamber 1400 , required is a cooling passage for introducing the cool air from the freezing chamber 1300 to the non-freezing apparatus 2000 or a damper.
  • the cooling apparatus 1000 includes a cooling passage guide duct 2300 which can pass through a bulkhead 1500 and introduce the cool air into the non-freezing apparatus 2000 .
  • the guide duct 2300 may be connected directly to the non-freezing apparatus 2000 , so that the cooling passage can be connected directly to the non-freezing apparatus 2000 .
  • the guide duct 2300 may not be connected directly to the non-freezing apparatus 2000 but an end portion thereof may be located adjacent to the non-freezing apparatus 2000 , so that the cooling passage can supply the cool air to the periphery of the non-freezing apparatus 2000 to indirectly cool the non-freezing apparatus 2000 .
  • a damper controlling the cool air flowing into the non-freezing apparatus 2000 may be provided.
  • the damper may be installed in the guide duct 2300 or on the side of the non-freezing apparatus 2000 . If the damper is closed, the non-freezing apparatus 2000 is cooled according to a first cooling method in which the cool air in the cooling apparatus 1000 indirectly cools the non-freezing apparatus 2000 . Meanwhile, if the damper is open, while the cool air in the cooling apparatus 1000 is circulated around the non-freezing apparatus 2000 to indirectly cool the non-freezing apparatus 2000 , a second cooling method is performed, in which the cool air is introduced into the non-freezing apparatus 2000 through the damper and circulated directly in the non-freezing apparatus 2000 .
  • the guide duct 2300 may cover the damper such that the damper is provided both in the guide duct 2300 and on the non-freezing apparatus 2000 .
  • the non-freezing apparatus 2000 When the non-freezing apparatus 2000 is installed in the refrigerating chamber 1400 , it may be detachable from the refrigerating chamber 1400 or fixed to the wall of the refrigerating chamber 1400 using screws or rivets.
  • FIG. 7 is a view showing a state where the non-freezing apparatus provided in the cooling apparatus according to the embodiment of the present invention is mounted in a freezing chamber door.
  • the non-freezing apparatus 2000 is installed in the freezing chamber door 1100 of the cooling apparatus 1000 .
  • the freezing chamber door 1100 serves to open and close the freezing chamber 1300 .
  • the non-freezing apparatus 2000 , an ice bank 1600 and an ice maker 1700 are installed in the freezing chamber door 1100 sequentially from the lower side.
  • the ice maker 1700 is supplied with water to make ice. When the ice maker 1700 finishes the ice making, the ice made in the ice maker 1700 is automatically or manually supplied to the ice bank 1600 .
  • an ice tray (not shown) in which the ice is made is rotatably installed in the ice maker 1700 and rotated to drop the ice to the lower side upon the completion of the ice making.
  • the ice bank 1600 includes an outer casing 1610 mounted in the freezing chamber door 1100 and a drawer 1620 which can be pulled out from the outer casing 1610 .
  • the outer casing 1610 has an opening portion on the upper side so that the ice dropped from the ice maker 1700 can be introduced therethrough.
  • the ice made in the ice maker 1700 is dropped to the lower portion by the rotation of the ice tray (not shown), passed through the opening portion formed in the outer casing 1610 of the ice bank 1600 , and stored in the drawer 1620 of the ice bank 1600 .
  • the ice gives a shock to the ice bank 1600 .
  • This shock may be transferred to the freezing chamber door 1100 , the non-freezing apparatus 2000 , etc.
  • the non-freezing apparatus 2000 has a groove 2100 having a larger section than that of the drawer 1620 . As such, when the ice is dropped to the drawer 1620 , the drawer 1620 can be downwardly moved to reduce the shock.
  • FIG. 8 is a view showing a state where the non-freezing apparatus provided in the cooling apparatus according to the embodiment of the present invention is mounted in a refrigerating chamber door.
  • the non-freezing apparatus 2000 is installed in the refrigerating chamber door 1200 of the cooling apparatus 1000 .
  • the non-freezing apparatus 2000 installed in the refrigerating chamber door 1200 may be further installed in addition to the non-freezing apparatus 2000 installed in the freezing chamber 1300 or the freezing chamber door 1100 , or may be mounted alone in the refrigerating chamber door 1200 .
  • the cooling apparatus 1000 should include a cooling passage guide duct 2300 to introduce the cool air into the non-freezing apparatus 2000 . Since the guide duct 2300 should not disturb the movement of a freezing chamber door 1100 and the refrigerating chamber door 1200 , it is preferably installed below the non-freezing apparatus 2000 . Moreover, an opening portion 1110 for introducing the cool air into the guide duct 2300 is formed in the freezing chamber door 1100 , thereby forming a passage introducing the cool air into the guide duct 2300 through the opening portion 1110 and then introducing the cool air into the non-freezing apparatus 2000 to cool the non-freezing apparatus 2000 .
  • a damper controlling the inflow of the cool air from the passage may be installed on the opening portion 1110 or in the guide duct 2300 .
  • the damper is located in the guide duct 2300 below the non-freezing apparatus 2000 . That is, the damper installed below the non-freezing apparatus 2000 is covered with the guide duct 2300 .
  • a separate home bar (not shown) may be installed in the refrigerating chamber door 1200 .
  • the relative positions of the home bar and the non-freezing apparatus 2000 may be determined regardless of order. If the damper is closed, the non-freezing apparatus 2000 is cooled according to a first cooling method in which the cool air in the cooling apparatus 1000 indirectly cools the non-freezing apparatus 2000 .
  • a second cooling method is performed, in which the cool air is introduced into the non-freezing apparatus 2000 through the damper and circulated directly in the non-freezing apparatus 2000 .
  • FIGS. 9 and 10 are exploded perspective views of the non-freezing apparatus according to the embodiment of the present invention.
  • the non-freezing apparatus 2000 includes a casing 100 defining the inner space for storing a container and a door 200 opening and closing the casing 100 , and is installed in a cooling apparatus 1000 storing food at a temperature below 0° C. such as a freezing chamber of the cooling apparatus 1000 .
  • the casing 100 which separates the outer space, i.e., the space of the cooling apparatus 1000 in which the non-freezing apparatus 2000 is installed from the inner space of the non-freezing apparatus 2000 , includes outer casings 110 and 120 forming the external appearance of the non-freezing apparatus 2000 .
  • the outer casings 110 and 120 include a front outer casing 110 and a rear outer casing 120 .
  • the front outer casing 110 forms the external appearance of the front and lower portions of the non-freezing apparatus 2000
  • the rear outer casing 120 forms the external appearance of the rear and upper portions of the non-freezing apparatus 2000
  • the casing 100 enables upper and lower portions of container containing a liquid to be located and stored in different temperature regions. More specifically, the lower portion of the container is located in a temperature region (about ⁇ 1° C. to ⁇ 5° C.) of the maximum ice crystal formation zone, and the upper portion of the container is located in a higher temperature region (about ⁇ 1° C. to 2° C.) in which the ice crystals are not easily formed.
  • the casing 100 includes a lower space 100 L having the temperature region (about ⁇ 1° C.
  • the casing 100 includes a lower casing 130 defining the lower space 100 L with the bulkhead 140 and an upper casing 150 defining the upper space 1000 with the bulkhead 140 . Further, a hole 140 h is formed in the bulkhead 140 so that the upper portion of the container can pass through the bulkhead 140 and be located in the upper space 1000 .
  • a flow fan 170 is installed at the rear of the lower space 100 L so that the liquid stored in the lower portion of the container located in the lower space 100 L can rapidly reach the temperature region (about ⁇ 1° C. to ⁇ 5° C.) of the maximum ice crystal formation zone and have a supercooled state.
  • a lower heater (not shown) is provided to adjust the temperature of the lower space 100 L.
  • An upper heater (not shown) is installed adjacent to the upper casing 150 so that the upper portion of the container located in the upper space 1000 can be maintained in the temperature region (about ⁇ 1° C. to 2° C.) in which the ice crystals are not easily formed.
  • a separation film 142 made of an elastic material and covering the hole 140 h of the bulkhead 140 is installed on the bulkhead 140 to prevent the heat exchange from occurring between the upper space 1000 and the lower space 100 L having different temperatures due to a forcible flow produced by the flow fan 170 .
  • fixing plates 144 which can be fixed to the bulkhead 140 by screws or the like, are provided to press the separation film 142 in the up-down direction to fix the separation film 142 to the bulkhead 140 .
  • a thermal insulator 112 for insulating the lower space 100 L from the outer space is provided at the lower portions of the outer casings 110 and 120
  • a thermal insulator 122 for insulating the upper space 1000 from the outer space is provided at the upper portions of the outer casings 110 and 120 .
  • a power switch 182 , a display unit 184 and the like are installed between the front outer casing 110 and the thermal insulator 122 , and the PCB (not shown) controlling electronic components, such as the power switch 182 , the display unit 184 , the upper and lower heaters (not shown), the flow fan 170 and a damper 190 , and a PCB installation portion 186 are installed between the rear outer casing 120 and the thermal insulator 122 .
  • the rear outer casing 120 further includes an opening portion 124 through which the PCB installation portion 186 can be detached in an assembled state of the outer casings 110 and 120 for the PCB installation, and a PCB cover 124 c covering the opening portion 124 after the mounting of the PCB installation portion 186 .
  • a bulkhead is formed to prevent the cool air from flowing from the lower portion of the rear space 100 R to the upper portion thereof and reducing the temperature of the upper space 1000 .
  • a rib 120 r formed on the rear outer casing 120 and a rib 140 r formed on the bulkhead 140 of the upper portion of the lower casing 130 to protrude from the lower casing 130 backwards overlap with each other, thereby forming the bulkhead.
  • a rib 150 r having a shape corresponding to that of the bulkhead 140 of the upper portion of the lower casing 130 is provided at the lower portion of the upper casing 150 to protrude therefrom backwards.
  • the rib 120 r formed on the rear outer casing 120 , the rib 140 r formed on the bulkhead 140 and the rib 150 r formed on the upper casing 150 overlap with each other, thus forming the bulkhead of the rear space 100 R.
  • the door 200 is installed on the front surface of the front outer casing 110 to open and close the lower space 100 L.
  • the door 200 includes a door panel 220 made of a transparent or semitransparent material in a door casing 210 , a door frame 230 fixed to the door casing 210 and fixing the door panel 220 therewith, and a gasket 240 mounted at the rear of the door frame 230 and sealing up between the door 200 and the front outer casing 110 .
  • the non-freezing apparatus 2000 according to the embodiment of the present invention includes a plurality of door panels 220 .
  • the respective door panels 220 are installed between the door casing 210 and the door frame 230 with a gap such that air layers are formed between the door panels 220 .
  • the air layers not only compensate for a low thermal insulation property of the door 200 but also prevent the frosting of the door 200 , i.e., the door panels 220 .
  • the gasket 240 is made of an elastic material to seal up the gap between the door 100 and the front outer casing 110 , thereby preventing the heat exchange from occurring between the cooling space 1300 and 1400 in which the non-freezing apparatus 2000 is mounted and the inside of the non-freezing apparatus 2000 . That is, the gasket 240 can prevent leakage of the cool or hot air.
  • a rear space R is defined by the rear outer casing 120 , the lower casing 130 and the upper casing 150 .
  • the flow fan 170 , the damper 190 and the lower heater (not shown) are installed in the rear space R.
  • the PCB installation portion 186 is installed at the upper portion of the rear space R to be detachable therefrom.
  • the lower heater (not shown), the upper heater (not shown), the lower sensor (not shown), the upper sensor (not shown), the flow fan 170 , the damper 190 , the power switch 182 and the display unit 184 are connected to the PCB through an electric wire.
  • the PCB is fixed in the PCB installation portion 186 , and then the PCB installation portion 186 is fitted into a groove formed in the thermal insulator 122 of the upper space through the opening portion 124 formed in the rear outer casing 120 .
  • the electric wire connecting the PCB to the respective electronic components is connected to the PCB with a sufficient length to pull out the PCB installation portion 186 through the opening portion 124 of the rear outer casing 120 . Accordingly, when the PCB is to be repaired or replaced, it is not necessary to separate the front outer casing 110 from the rear outer casing 120 , which improves the convenience of maintenance and repair.
  • grooves 136 and 156 are provided in the upper portion of the lower casing 130 and the lower portion of the upper casing 150 , respectively, so that the electric wire connecting the PCB to the respective electronic components can be fitted thereinto.
  • the upper portion of the lower casing 130 and the lower portion of the upper casing 150 are fixed to each other in an overlapping manner.
  • the separation film 142 or the fixing plate 144 described above are located between the upper portion of the lower casing 130 and the lower portion of the upper casing 150 .
  • the opening portion 124 is closed by the PCB cover 124 c .
  • FIGS. 11 to 13 are views of the damper provided in the non-freezing apparatus according to an embodiment of the present invention.
  • the damper 170 is installed in the rear space 100 R (see FIG. 9 ) and controls the inflow of the cool air from the cooling space in which the non-freezing apparatus 2000 is installed to the rear space 100 R (see FIG. 9 ).
  • the damper 170 pivots on a frame 172 installed on the rear outer casing 120 to thereby open or close an opening portion of the frame 172 .
  • the damper 170 is connected to the PCB via an electric wire, and the PCB controls the opening and closing of the damper 170 according to temperature information of the lower space 100 L measured by a sensor (not shown).
  • the non-freezing apparatus 2000 is cooled according to a first cooling method in which the cool air in the cooling apparatus 1000 indirectly cools the non-freezing apparatus 2000 .
  • a second cooling method is performed, in which the cool air is introduced into the non-freezing apparatus 2000 through the damper 170 and circulated directly in the non-freezing apparatus 2000 . That is, when the non-freezing apparatus 2000 is cooled in the cooling apparatus 1000 according to the first cooling method, the second cooling method is selectively performed with the first cooling method according to the opening and closing of the damper 170 .
  • the damper 170 if the damper 170 is closed, the non-freezing apparatus 2000 is cooled according to the first cooling method, and if the damper 170 is open, the non-freezing apparatus 2000 is cooled according to the first cooling method and the second cooling method.
  • FIG. 14 is a view of the rear space of the non-freezing apparatus according to the embodiment of the present invention
  • FIG. 15 is a perspective view of the non-freezing apparatus according to the embodiment of the present invention.
  • the damper 190 is installed at the lower portion of the rear space 100 R to control the inflow of the cool air.
  • the flow fan 170 installed on the rear surface of the lower casing 130 produces a forcible flow such that the air introduced into the rear space 100 R can be introduced into the lower space 100 L and the air of the lower space 100 L can be discharged again to the rear space 100 R.
  • a discharge grill 172 is provided in the installation position of the flow fan 170 in the lower casing 130 so that the flow produced by the flow fan 170 can flow therethrough, thereby forming a passage from the rear space 100 R to the lower space 100 L.
  • first discharge holes 310 a , 310 b , 310 c and 310 d are formed in the rear surface of the lower casing 130 to discharge the flow from the lower space 100 L to the rear space 100 R.
  • the first discharge holes 310 are formed at both side ends.
  • Four first discharge holes 310 a , 310 b , 310 c and 310 d are formed in twos in the up-down direction.
  • the flow produced by the flow fan 170 is introduced into the lower space 100 L through the discharge grill 172 , and then discharged again through the first discharge holes 310 a , 310 b , 310 c and 310 d located at both side ends.
  • a natural cooling passage is formed in the lower space 100 L.
  • second discharge holes 320 are formed in the lower portion of the lower space 100 L to discharge the flow discharged through the first discharge holes 310 a , 310 b , 310 c and 310 d to the cooling space.
  • bulkheads 330 a and 330 b are installed between the flow fan 170 and the first discharge holes 310 a , 310 b , 310 c and 310 d to prevent the flow discharged through the first discharge holes 310 a , 310 b , 310 c and 310 d from flowing to the central portion in which the flow fan 170 is located and flowing into the lower space 100 L again.
  • the third discharge holes 340 are formed in the left and right in the same number to form symmetric passages.
  • the damper 190 is open and the flow fan 170 is in operation, the cool air is introduced from the cooling space to the rear space 100 R through the damper 190 , and then introduced from the rear space 100 R to the lower space 100 L through the discharge grill 172 , thus cooling the lower portion of the container containing the liquid in the non-freezing apparatus 2000 .
  • Some of the flow exchanging heat with the liquid contained in the container and cooling the liquid is discharged directly to the cooling space through the third discharge holes 340 located at both sides of the lower portion of the lower space 100 L.
  • the rest of the flow is discharged to the rear space 100 R through the first discharge holes 310 a , 310 b , 310 c and 310 d of both side ends, and then discharged to the outside (cooling space) through the second discharge holes 320 a and 320 b.
  • fourth discharge holes 350 a and 350 b are further formed in the lower casing 130 to be located inside the bulkheads 330 a and 330 b . That is, the bulkheads 330 a and 330 b exist between the fourth discharge holes 350 a and 350 b , and the first discharge holes 310 a , 310 b , 310 c and 310 d and the second discharge holes 320 a and 320 b .
  • the damper 190 is closed, when the flow fan 170 is operated, the flow discharged from the rear space 100 R to the lower space 100 L through the discharge grill 172 is circulated in the lower space 100 L and discharged again to the rear space 100 R through the fourth discharge holes 350 a and 350 b .
  • a trough 116 is formed at a contact portion of the door 200 and the front outer casing 110 .
  • the trough 116 prevents dews or moisture deposited on the container from being frozen on the door 200 or the front outer casing 110 .
  • the door 200 and the front outer casing 110 are not closely attached to each other but have a gap therebetween, and the cool air infiltrates into the gap and lowers the temperature of the lower space 100 L. That is, since the dews deposited on the door 200 or the front outer casing 110 are dropped and collected in the trough 116 , the frosting or freezing of the moisture does not occur on the bottom surface of the front outer casing 110 brought into contact with the door 200 .
  • FIG. 16 is a view of the rear of the non-freezing apparatus according to the embodiment of the present invention.
  • Fifth discharge holes 360 a , 360 b and 360 c are formed in a center of the rear surface of the rear outer casing 120 to discharge the flow from the rear space 100 R to the cooling space. Some of the cool air introduced from the cooling space to the rear space 100 R through the damper 190 is not introduced into the lower space 100 L through the discharge grill 172 but discharged again to the cooling space through the fifth discharge holes 360 a , 360 b and 360 c.
  • a plurality of ribs 125 are formed on the rear surface of the rear outer casing 120 .
  • the ribs 125 serve to leave a spacing between the rear surface of the rear outer casing 120 and the installation surface.
  • the ribs 125 maintain a spacing between the inner surface of the cooling apparatus 1000 and the rear surface of the rear outer casing 120 .
  • the inner surface of the cooling apparatus 1000 includes the inner surfaces of the freezing chamber door 1100 and the refrigerating chamber door 1200 .
  • a separate rib 126 is provided to enclose the fifth discharge holes 360 a , 360 b and 360 c formed in the center of the rear surface of the rear outer casing 120 so that the flow discharged through the fifth discharge holes 360 a , 360 b and 360 c of the rear outer casing 120 can be guided to the lower portion of the rear outer casing 120 .
  • the separate rib 126 encloses the fifth discharge holes 360 a , 360 b and 360 c in three sides except the lower side such that the flow discharged through the fifth discharge holes 360 a , 360 b and 360 c is naturally guided to the lower side of the non-freezing apparatus 2000 .
  • FIGS. 17 and 18 are schematic views showing the heat transfer comparison, when the non-freezing apparatus is closely attached to the cooling apparatus and when the non-freezing apparatus is spaced apart from the cooling apparatus by a given gap.
  • FIG. 18 when the non-freezing apparatus 2000 is closely attached to the cooling apparatus 1000 , the heat exchange occurs between the inner surface of the cooling apparatus 1000 and the contact surface of the non-freezing apparatus 2000 , so that the inner surface of the cooling apparatus 1000 and the contact surface of the non-freezing apparatus 2000 have the same temperature.
  • the non-freezing apparatus 2000 when the non-freezing apparatus 2000 is spaced apart from the cooling apparatus 1000 by the ribs 125 , the non-freezing apparatus 2000 can be maintained at a different temperature from the inner surface of the cooling apparatus 1000 .
  • the influence of the outdoor air of the cooling apparatus 1000 exerted on the non-freezing apparatus 2000 can be reduced. Moreover, after the temperature in the non-freezing apparatus 2000 is lowered to a temperature at which the liquid can be stored in a supercooled state, it is possible to reduce heating values of upper and lower heaters (not shown) installed in the non-freezing apparatus 2000 , thereby improving the energy efficiency of the non-freezing apparatus 2000 . When the non-freezing apparatus 2000 is closely attached to the cooling apparatus 1000 , the heat transfer occurs to the cooling apparatus 1000 .
  • the heat generated by the heater is used to raise the temperature of the inner surface of the cooling apparatus 1000 closely attached to the non-freezing apparatus 2000 . Accordingly, when the non-freezing apparatus 2000 is spaced apart from the cooling apparatus 1000 by the given gap, the liquid can be rapidly changed to the supercooled state and the energy efficiency of the non-freezing apparatus 2000 can be improved.
  • FIG. 19 is a graph showing changes in the internal temperature versus the time, when the non-freezing apparatus is closely attached to the cooling apparatus and when the non-freezing apparatus is spaced apart from the cooling apparatus by a given gap. As shown in the graph, when the non-freezing apparatus 2000 is spaced apart from the cooling apparatus 1000 by the given gap (less close attachment), it is cooled faster.

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  • Chemical & Material Sciences (AREA)
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KR20090108307A KR101115239B1 (ko) 2009-01-08 2009-11-10 냉각 장치
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US13/143,685 Expired - Fee Related US9134059B2 (en) 2009-01-08 2010-01-07 Supercooling non-freezing compartment for refrigerator appliance
US13/143,600 Abandoned US20110302952A1 (en) 2009-01-08 2010-01-07 Cooling apparatus

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US9134059B2 (en) 2015-09-15
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US20110302952A1 (en) 2011-12-15
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