KR20080076269A - Refrigerator - Google Patents

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Publication number
KR20080076269A
KR20080076269A KR1020070015994A KR20070015994A KR20080076269A KR 20080076269 A KR20080076269 A KR 20080076269A KR 1020070015994 A KR1020070015994 A KR 1020070015994A KR 20070015994 A KR20070015994 A KR 20070015994A KR 20080076269 A KR20080076269 A KR 20080076269A
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KR
South Korea
Prior art keywords
chamber
temperature variable
cold air
temperature
refrigerating
Prior art date
Application number
KR1020070015994A
Other languages
Korean (ko)
Inventor
김도형
장의성
Original Assignee
삼성전자주식회사
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Filing date
Publication date
Application filed by 삼성전자주식회사 filed Critical 삼성전자주식회사
Priority to KR1020070015994A priority Critical patent/KR20080076269A/en
Publication of KR20080076269A publication Critical patent/KR20080076269A/en

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    • 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
    • F25D17/00—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces
    • F25D17/04—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces for circulating air, e.g. by convection
    • F25D17/06—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces for circulating air, e.g. by convection by forced circulation
    • F25D17/062—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces for circulating air, e.g. by convection by forced circulation in household refrigerators
    • F25D17/065—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces for circulating air, e.g. by convection by forced circulation in household refrigerators with 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
    • F25D17/00—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces
    • F25D17/04—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces for circulating air, e.g. by convection
    • F25D17/06—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces for circulating air, e.g. by convection by forced circulation
    • F25D17/08—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces for circulating air, e.g. by convection by forced circulation using ducts
    • 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
    • F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D2317/00—Details or arrangements for circulating cooling fluids; Details or arrangements for circulating gas, e.g. air, within refrigerated spaces, not provided for in other groups of this subclass
    • F25D2317/06—Details or arrangements for circulating cooling fluids; Details or arrangements for circulating gas, e.g. air, within refrigerated spaces, not provided for in other groups of this subclass with forced air circulation
    • F25D2317/065—Details or arrangements for circulating cooling fluids; Details or arrangements for circulating gas, e.g. air, within refrigerated spaces, not provided for in other groups of this subclass with forced air circulation characterised by the air return
    • F25D2317/0654—Details or arrangements for circulating cooling fluids; Details or arrangements for circulating gas, e.g. air, within refrigerated spaces, not provided for in other groups of this subclass with forced air circulation characterised by the air return through the side
    • 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
    • F25D2317/00—Details or arrangements for circulating cooling fluids; Details or arrangements for circulating gas, e.g. air, within refrigerated spaces, not provided for in other groups of this subclass
    • F25D2317/06—Details or arrangements for circulating cooling fluids; Details or arrangements for circulating gas, e.g. air, within refrigerated spaces, not provided for in other groups of this subclass with forced air circulation
    • F25D2317/066—Details or arrangements for circulating cooling fluids; Details or arrangements for circulating gas, e.g. air, within refrigerated spaces, not provided for in other groups of this subclass with forced air circulation characterised by the air supply
    • F25D2317/0664—Details or arrangements for circulating cooling fluids; Details or arrangements for circulating gas, e.g. air, within refrigerated spaces, not provided for in other groups of this subclass with forced air circulation characterised by the air supply from the side
    • 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
    • F25D2317/00—Details or arrangements for circulating cooling fluids; Details or arrangements for circulating gas, e.g. air, within refrigerated spaces, not provided for in other groups of this subclass
    • F25D2317/06—Details or arrangements for circulating cooling fluids; Details or arrangements for circulating gas, e.g. air, within refrigerated spaces, not provided for in other groups of this subclass with forced air circulation
    • F25D2317/066—Details or arrangements for circulating cooling fluids; Details or arrangements for circulating gas, e.g. air, within refrigerated spaces, not provided for in other groups of this subclass with forced air circulation characterised by the air supply
    • F25D2317/0667—Details or arrangements for circulating cooling fluids; Details or arrangements for circulating gas, e.g. air, within refrigerated spaces, not provided for in other groups of this subclass with forced air circulation characterised by the air supply from the refrigerator
    • 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
    • F25D2317/00—Details or arrangements for circulating cooling fluids; Details or arrangements for circulating gas, e.g. air, within refrigerated spaces, not provided for in other groups of this subclass
    • F25D2317/06—Details or arrangements for circulating cooling fluids; Details or arrangements for circulating gas, e.g. air, within refrigerated spaces, not provided for in other groups of this subclass with forced air circulation
    • F25D2317/067—Details or arrangements for circulating cooling fluids; Details or arrangements for circulating gas, e.g. air, within refrigerated spaces, not provided for in other groups of this subclass with forced air circulation characterised by air ducts
    • F25D2317/0672—Outlet ducts
    • 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
    • F25D2400/00—General features of, or devices for refrigerators, cold rooms, ice-boxes, or for cooling or freezing apparatus not covered by any other subclass
    • F25D2400/16—Convertible 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
    • F25D2700/00—Means for sensing or measuring; Sensors therefor
    • F25D2700/12—Sensors measuring the inside temperature
    • F25D2700/121—Sensors measuring the inside temperature of particular compartments

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Thermal Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Cold Air Circulating Systems And Constructional Details In Refrigerators (AREA)

Abstract

The present invention relates to a refrigerator, and to a refrigerator having a structure capable of preventing overcooling of a temperature variable room without providing a separate heater.

To this end, the present invention is a refrigerator comprising a compressor, an evaporator, a freezer compartment, a temperature variable chamber provided on one side of the freezer compartment, and a refrigerating compartment provided on the other side of the freezer compartment, the circulation duct communicating with the temperature variable chamber and the refrigerating compartment; A control unit for driving the circulation fan when one of the temperature variable room and the refrigerating chamber is determined to be supercooled by determining whether the circulation fan provided in the circulation duct and the temperature variable chamber and the refrigerating chamber are supercooled for forced circulation of cold air. It is made, including.

Description

Refrigerator {Refrigerator}

1 is a schematic perspective view of a refrigerator according to the present invention.

2 is a side cross-sectional view of a refrigerator according to the present invention.

3 is a schematic perspective view showing a circulation duct of the refrigerator according to the present invention.

4 is a control block diagram of a refrigerator according to the present invention.

5 is a time chart of the refrigerator temperature setting operation of the first temperature variable room of the refrigerator according to the present invention.

* Description of symbols on the main parts of the drawings *

10 main body 11: vertical bulkhead

20: freezer 30: cold storage room

33: home bar 34: storage unit

33c, 34c: first opening 33d, 34d: second opening

50: first temperature variable room 53: fourth duct

54: second temperature detection unit 70, 71: first, second evaporator

80: circulation duct 81: outflow duct

82: inlet duct 83: circulation fan

91: control unit

The present invention relates to a refrigerator and a control method thereof, and more particularly, to a refrigerator for preventing overcooling of a temperature variable room provided adjacent to a freezer compartment.

Generally, a refrigerator includes a compressor for compressing a gaseous refrigerant at high temperature and high pressure, a condenser for condensing the gaseous refrigerant compressed from the compressor into a liquid state, a capillary tube for converting the liquefied refrigerant into a low temperature low pressure state, and a capillary tube. And an evaporator that cools the surrounding air by absorbing latent heat of evaporation to vaporize the refrigerant liquefied at low temperature and low pressure.

Recently, as customers' demands are diversified, refrigerators having a plurality of storage compartments having a variable temperature chamber capable of varying temperatures by refrigeration or freezing have been released.

When the temperature variable room is set to refrigerated in such a refrigerator, the temperature of the evaporator is lowered below -30.0 ° C. for cooling the freezer, and since a part of the evaporator is located in the temperature variable room, a fan for introducing cold air into the temperature variable room is provided. Even in the off state, the temperature variable room is gradually cooled by natural convection, and there is a problem in that subcooling that falls below 0 ° C or below freezing temperature occurs.

This problem occurs when the temperature variable room is set to more than the image to -1.0 ℃, to solve this problem, Korean Patent Laid-Open Publication No. 10-2005-1142 is a refrigerator that can prevent the overcooling of the high temperature storage room and A refrigerator operation control method is disclosed.

The refrigerator disclosed in the publication includes a low temperature storage room having a relatively low storage temperature and a high temperature storage room having a relatively high storage temperature; An evaporator forming cold air; A heater for defrosting the evaporator; A compressor for compressing the refrigerant; A duct having a suction port for sucking cold air from the respective storage chambers and a discharge port for discharging cold air to the respective storage chambers; A refrigerator comprising a blower fan installed in the duct to circulate cold air, the refrigerator comprising: a discharge damper installed at an area of each discharge port to block and open discharge of cold air; A damper driver for driving the respective dampers; A temperature sensing unit detecting a temperature of each storage chamber; The damper, the compressor, the blowing fan, and the heater are controlled so that the temperature of the high temperature storage chamber and the temperature of the low temperature storage chamber correspond to a set temperature, and the compressor is determined to be subcooled by determining whether the high temperature storage chamber is undercooled. And a control unit for activating the heater and the blower in a state in which the discharge damper of the cold storage chamber is blocked and the discharge damper of the cold storage chamber is opened.

However, the prior art disclosed in the above publication is provided with a separate heater to prevent overcooling of the high-temperature storage room, or to drive it or to prevent overcooling by using a defrost heater, thereby lowering the cooling function, which is a unique function of the refrigerator, and the heater. In order to remove the heat generated by the operation of the cooling cycle is required more power consumption is increased, there is a problem that the storage of stored foods due to the repeated cooling and heating is not stable.

The present invention is to solve the above problems, an object of the present invention is to provide a refrigerator having a structure that can prevent the overcooling of the temperature variable room without a separate heater.

Another object of the present invention is to provide a refrigerator capable of improving power consumption by leaking unnecessary cold air in a temperature variable room to another place where a cooling heat source is required.

A refrigerator of the present invention for achieving the above object is a refrigerator comprising a compressor, an evaporator, a freezer compartment, a temperature variable chamber provided on one side of the freezer compartment, and a refrigerating compartment provided on the other side of the freezer compartment, wherein the temperature variable room and the cold storage compartment Circulating ducts communicating with each other, a circulation fan provided in the circulation ducts for forced circulation of cold air, and whether the temperature variable room and the refrigerating room are overcooled is judged to be one of the temperature variable room and the refrigerating room. It characterized in that it comprises a control unit for driving the circulation fan.

The circulation duct may include an outlet duct for allowing cold air of the temperature variable room to flow into the refrigerating compartment, and an inlet duct for introducing cold air of the refrigerating compartment to the temperature variable chamber, wherein the circulation fan is provided in the outlet duct. It is done.

The temperature variable chamber and the refrigerating chamber are each provided with a cold fan for supplying cold air therein, and the controller stops the cold fan of the temperature variable chamber when the temperature variable chamber is determined to be supercooled. do.

The temperature variable chamber and the refrigerating chamber may be provided with cold air fans to supply cold air therein, and the control unit may stop the cold air fan of the refrigerating compartment when it is determined that the refrigerating chamber is undercooled.

In addition, the door inner surface of the refrigerating compartment is provided with a storage unit partitioned from the refrigerating compartment, characterized in that the cold air duct is in communication with the storage unit.

In another aspect, the present invention provides a refrigerator including a plurality of storage compartments including a freezing compartment, a refrigerating compartment, and a temperature varying chamber, and a plurality of doors for opening and closing the plurality of storage compartments. An evaporator provided with a forge to form cold air, a circulation duct for communicating the evaporator and the refrigerating chamber on the side of the temperature variable chamber, a circulation fan provided at the circulation duct for forced circulation of cold air, and a temperature of the temperature variable room is greater than a set temperature. It characterized in that it comprises a control unit for driving the circulation fan in the low case.

In addition, the circulation duct includes an outlet duct for allowing the cold air on the evaporator side to flow into the refrigerating chamber, and an inlet duct for introducing the cold air of the refrigerating chamber to the evaporator side, and the cold air fan is provided in the outlet duct. .

The temperature variable chamber may include a cold fan for supplying cold air, and the controller may stop the cold fan when it is determined that the temperature variable chamber is undercooled.

In addition, the door inner surface of the refrigerating compartment is provided with a storage unit partitioned from the refrigerating compartment, the circulation duct is characterized in that the communication with the storage unit.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the drawings.

As shown in FIG. 1, the refrigerator according to the present invention includes a main body 10 provided with a plurality of storage compartments 20, 30, 40, and 50, and a door that opens and closes each storage compartment 20, 30, 40, 50. 21,31,41,51).

The plurality of storage compartments 20, 30, 40, and 50 provided inside the main body 10 may be divided by the vertical bulkheads 11 to form a freezing compartment 20 formed on the upper left side, a refrigerating compartment 30 formed on the upper right side, The first temperature variable chamber 50 under the freezer compartment 20 and the second temperature variable chamber 40 under the refrigeration chamber 30 are included.

In general, the temperature variable room refers to a storage room whose temperature can be adjusted in the range of -25.0 ° C to 3.0 ° C. That is, it is provided to be refrigerated and frozen according to the user's selection is formed to increase the refrigerating space or increase the freezing space according to the user's needs.

In the machine room 60 partitioned at the lower side of the lower part of the main body 10, electrical components such as a compressor 61 are installed, and first and second temperature variable chambers 40 and 50 are formed above the machine room 60. In order to maintain thermal insulation between the inner and outer surfaces 10b and 10a of the main body 10, the foam is filled.

The refrigerator according to the present invention is provided with components such as a compressor 61, a condenser (not shown), an expander (not shown), and an evaporator (70, 71) for forming a refrigeration cycle.

The freezing chamber 20 and the refrigerating chamber 30 are provided with a case-type freezing chamber door 21 and a refrigerating chamber door 31, and sliding doors on the front of the first and second temperature variable chambers 40 and 50. 41 and 51 are provided, respectively.

Storage spaces 22 and 32 are formed in each of the inner surface of the freezing compartment door 21 and the refrigerating compartment door 31, and the refrigerator compartment door 31 does not open or close the door 31 from the outside of the refrigerating compartment 30 and drinks and the like. The groove bar 33 is provided to be able to enter and exit, and the storage 34 is separately partitioned for drinks and other storage. The groove bar part 33 and the storage part 34 are partitioned from the inside of the refrigerating compartment 30 by the covers 33a and 34a, and the cover 33a and 34a have a cold air hole for introducing cold air from the refrigerating compartment 30. 33b, 34b) are formed.

Evaporators 70 and 71 for generating cold air are provided at the rear sides of the plurality of storage chambers 20, 30, 40 and 50, and the evaporators 70 and 71 are the freezing chamber 20 and the first temperature variable chamber 50. The first evaporator 70 is provided at the rear side of the refrigerator, and the second evaporator 71 is provided at the rear side of the refrigerating chamber 30 and the second temperature variable chamber 40.

The upper side of the first evaporator 70 is located at the rear side of the freezing chamber 20, and the lower side is located at the rear side of the first temperature variable chamber 50, and the cold air that has exchanged heat with the first evaporator 70 is formed in the freezing chamber 20 and the first side. 1 temperature is supplied to the variable chamber (50). In this case, the freezing chamber 20 and the first temperature variable chamber 50 are provided with first and fourth cooling fans 23 and 52 for forced circulation of cold air.

The upper side of the second evaporator 71 is located at the rear side of the refrigerating chamber 30, and the lower side is located at the rear side of the second temperature variable chamber 40, and the cold air which has exchanged heat with the second evaporator 71 is made of the refrigerating chamber 30 and the first side. 2 is supplied to the variable temperature chamber (40). In this case, the refrigerating chamber 30 and the second temperature variable chamber 40 are provided with second and third cooling fans 35 and 42 for forced circulation of cold air.

Ducts are provided on the front of the first and second evaporators (70, 71) for supplying the heat-exchanged cold air to the storage compartments (20, 30, 40, 50), the first duct is provided on the rear of the freezer compartment (20) 24 and second and second ducts (not shown) provided on the rear side of the refrigerating chamber 30 and third and fourth ducts 43 and 53 provided on the rear surfaces of the first and second temperature variable chambers 40 and 50. It is done by

The first and second ducts are formed in the same manner, and the first inlet 24a is formed at the lower side of the first duct 24 to introduce cold air from the freezing chamber 20 to the first evaporator 70 side, and the upper side thereof has an inlet. The first discharge port 24b is provided so that the cold air is heat-exchanged through the first evaporator 70 and discharged to the freezing chamber 20. A first cooling fan 23 for forcibly circulating cold air is disposed in the first discharge port 24b.

In addition, an appropriate number of openings 24c are formed on the front surface of the first duct 24 so that the cold air passing through the first discharge port 24b is evenly distributed and discharged to the freezing chamber 20. A cold air flow passage 24d is formed therein to guide the cold air discharged from the first discharge port 24b to the opening 24c.

The second duct (not shown) is formed in the same manner as the first duct 24 and is provided on the rear side of the refrigerating chamber.

The third duct 43 is provided in the second temperature variable chamber 40. The cold air of the second temperature variable chamber 40 flows into the lower side of the second evaporator 71 and passes through the second evaporator 71. The heat exchanged cold air is discharged upward. At this time, a third cooling fan 42 for forcibly circulating cold air is provided.

The fourth duct 53 is provided in the first temperature variable chamber 50, and inflow of cold air from the first temperature variable chamber 50 to the lower side of the first evaporator 70 below the fourth duct 53. A fourth inlet 53a is formed, and a fourth outlet 53b is provided on the upper side so that the introduced cold air is heat-exchanged through the first evaporator 70 and discharged to the first temperature variable chamber 50. A fourth cooling fan 52 for forcibly circulating cold air is disposed in the fourth discharge port 53b.

In addition, the freezing chamber 20 and the first temperature variable chamber 50 are provided with first and second temperature sensing units 25 and 54 for sensing an internal temperature.

In the refrigerator according to the present invention, the first temperature variable chamber 50 is formed below the freezing chamber 20, and the first evaporator 70 is disposed on the rear surfaces of both sides of the freezing chamber 20 and the first temperature variable chamber 50. When the first temperature variable chamber 50 is set to refrigerated, even when the fourth cooling fan 52 of the first temperature variable chamber 50 has finished operation, the lower portion of the first evaporator 70 Located in the rear of the first temperature variable chamber 50, the supercooling occurs so that the temperature in the first temperature variable chamber 50 is lower than the set temperature due to the influence of the first evaporator 70.

In order to solve this problem, as shown in FIG. 3, the circulation duct 80 for inducing cold air, which causes the supercooling of the first temperature variable chamber 50 to the other side, communicates with the fourth duct 53. Prepared.

The circulation duct 80 flows in the outflow duct 81 for allowing cold air from the first temperature variable chamber 50 to the refrigerating chamber 30 and the cold air from the refrigerating chamber 30 to the first temperature variable chamber 50. The inlet duct 82 is made to include.

One side of the outflow duct 81 is provided in communication with the fourth duct 53, and the other side branches and extends toward the side surface of the cover 33a of the groove bar seal 33 and the cover 34a of the storage part 34. do.

In addition, the cold air on the first evaporator 70 side is introduced into the home basilic chamber 33 and the storage unit 34 at the end of the home basil seal cover 33a side and the storage cover 34a side of the outflow duct 81. The supply holes 81a are formed, and the supply holes 81a are provided with circulation fans 83 for forced circulation of cold air, respectively.

The circulation duct 80 is embedded in the vertical bulkhead 11 and provided at a side surface of the cover 33a of the home bar seal and the cover 34a of the storage part so as to communicate with the supply hole 81a. 33c, 34c are formed.

Inflow holes 82a are formed at the end of the inflow duct 82, respectively, and the second openings 33d and 34d are provided on the side surfaces of the cover 33a of the home bar seal and the cover 34a of the storage part so as to interlock with each other. Is formed.

In the supply hole 81a, circulation fans 83 are provided for forced circulation of cold air, respectively.

3 is a control block diagram of a refrigerator according to the present invention, which includes a key input unit 90, first and second temperature sensing units 25 and 54, a control unit 91, a compressor driving unit 92, and a first cooling unit. And a fan driver 93, a fourth cooling fan driver 94, a circulation fan driver 95, and a display 96.

The key input unit 90 is provided to input operation information such as refrigeration, freezing mode, and setting temperature selected by the user, and the first and second temperature detection units 25 and 54 are the freezing chamber 20 and the first temperature variable room. It is provided in the 50 is provided for sensing the temperature of the freezing chamber 20 and the first temperature variable chamber (50).

The control unit 91 is a microcomputer that controls the refrigerating, freezing mode, temperature, and the like according to the refrigerating and freezing modes input from the key input unit 90.

The compressor driver 92 turns on / off the compressor 61 according to the signal of the controller 91, and the first cooling fan driver 93 signals the controller 91 to maintain the set temperature of the freezer compartment 20. Control the driving of the first cooling fan 23, the fourth cooling fan driver 94 receives a signal from the control unit 91 to maintain the set temperature of the first temperature variable chamber (50) 4 The driving of the cooling fan 52 is controlled.

The circulation fan driver 95 controls the driving of the circulation fan 83 by receiving a signal from the controller 91 when the temperature of the first temperature variable chamber 50 is lower than the set temperature.

Therefore, the controller 91 inputs a signal to the fourth cooling fan driver 94 when the temperature of the first temperature variable chamber 50 sensed by the second temperature sensor 54 is lower than the set temperature, thereby providing a fourth cooling fan. The drive of 52 is terminated, and a signal is inputted to the circulation fan driver 95 to drive the circulation fan 83.

In particular, when the set temperature of the first temperature variable chamber 50 is set to the refrigerating temperature, the cold air introduced from the first evaporator 70 side using the outflow duct 81 and the home bar portion 33 of the refrigerating chamber 30; The first temperature variable chamber 50 flows out to the storage part 34 and flows in the relatively high temperature home bar part 33 and the air of the storage part 34 to the first evaporator 70 through the inlet duct 82. It is possible to prevent the temperature of) from lowering.

The display unit 96 displays an operation state of the refrigerator, an error mode, and the like according to the display control signal of the controller 91.

Next, the operation of the refrigerator according to the present invention will be limited to the operation of cooling the freezer compartment 20 and the first temperature variable chamber 50 using the first evaporator 70.

4 is a time chart of operation when the first temperature variable room of the refrigerator according to the present invention is set to the refrigerating temperature.

In the refrigerator according to the present invention, as shown in FIG. 4, when the operation of the refrigerator starts, the first and second temperature sensing units 25 and 54 provided in the freezer compartment 20 and the first temperature variable chamber 50 are freezer compartments ( 20) and the temperature of the first temperature variable chamber 50 is sensed to operate the first and fourth cooling fans 23 and 52 and the compressor 61 according to the set temperature.

At this time, since the first temperature variable chamber 50 under the freezer compartment 20 is set to the refrigerating temperature, the heat exchanged by the fourth cooling fan 52 of the first temperature variable chamber 50 and the cold air introduced from the freezer compartment 20. When the second temperature detecting unit 54 of the first temperature variable room 50 detects the temperature of the first temperature variable room 50 after t1 hours elapses and detects that the temperature falls below the set temperature, the controller 91 The operation of the fourth cooling fan 52 is stopped and the circulation fan 83 provided in the outflow duct 81 is operated.

At this time, the cold air from the side of the first evaporator 70 flowing into the first temperature variable chamber 50 is used to cool the storage 34 and the groove bar 33, and the storage 34 and the groove bar 33. The relatively high temperature of the air is sucked into the first evaporator 70 by using the inlet duct 82.

In addition, when the temperature of the freezing chamber 20 satisfies the set temperature after the predetermined time t2 has elapsed, the operation of the compressor 61 and the first cooling fan 23 is stopped, and after the predetermined time t3, the first operation is stopped. When the temperature of the temperature variable room 50 recovers the set temperature, the operation of the circulation fan 83 is stopped.

When the first temperature variable chamber 50 is lowered below the set temperature as described above, the excess cold air is discharged to the groove bar portion 33 and the storage portion 34 on the side of the refrigerating chamber door 31 having a relatively high temperature, and the groove bar portion ( 33) and the air of the storage 34 is introduced to the first evaporator 70 side to prevent the first temperature variable chamber 50 from being overcooled.

As described in detail above, the present invention has an effect of preventing the supercooling of the temperature variable room by providing a circulating duct for allowing the cold air of the temperature variable room side to flow out to the refrigerating chamber side.

In addition, the present invention has the effect of improving the power consumption by preventing overcooling of the temperature variable room without having a separate heater.

Claims (9)

In the refrigerator comprising a compressor, an evaporator, a freezer compartment, a temperature variable chamber provided on one side of the freezer compartment, and a refrigerating compartment provided on the other side of the freezer compartment, Any one of the temperature variable room and the refrigerating chamber is determined by determining whether the temperature variable room and the cold storage chamber communicate with each other, the circulation fan provided in the circulation duct for forced circulation of cold air, and whether the temperature variable room and the refrigerating compartment are supercooled. And a control unit for driving the circulation fan when it is determined that the supercooling is performed. The circulation duct of claim 1, wherein the circulation duct includes an outlet duct for allowing cold air of the temperature variable chamber to flow into the refrigerating chamber, and an inlet duct for introducing cold air of the refrigerator compartment to the temperature variable chamber, and the circulation fan includes the outlet duct. Refrigerator characterized in that provided. The method of claim 1, wherein the temperature variable chamber and the refrigerating chamber is provided with a cold air fan for supplying cool air into the interior, respectively, and the control unit stops the cold air fan of the temperature variable chamber when it is determined that the temperature variable chamber is overcooled Refrigerator characterized in that. The method of claim 1, wherein the temperature variable chamber and the refrigerating chamber is provided with a cold air fan for supplying the cool air to the inside, respectively, wherein the control unit is characterized in that the cold air fan of the refrigerating chamber is stopped when it is determined that the refrigerating chamber is overcooled. Refrigerator. The refrigerator according to claim 1, wherein a storage part partitioned from the refrigerating compartment is provided on an inner surface of the door of the refrigerating compartment, and the cold air duct is in communication with the storage unit. A refrigerator comprising a plurality of storage compartments including a freezing compartment, a refrigerating compartment, and a temperature variable chamber, and a plurality of doors for opening and closing the plurality of storage compartments, An evaporator provided over the freezing chamber and the temperature variable chamber to form cold air, a circulation duct communicating the evaporator on the side of the temperature variable chamber with the refrigerating chamber, a circulation fan provided in the circulation duct for forced circulation of cold air, and And a control unit for driving the circulation fan when the temperature of the temperature variable room is lower than the set temperature. 7. The circulation duct of claim 6, wherein the circulation duct includes an outlet duct for allowing cold air on the evaporator side to flow into the refrigerating chamber, and an inlet duct for introducing cold air in the refrigerator compartment to the evaporator side, wherein the cold fan is provided in the outlet duct. Refrigerator, characterized in that. The refrigerator according to claim 6, wherein the temperature variable chamber includes a cold fan for supplying cold air, and the controller stops the cold fan when it is determined that the temperature variable chamber is undercooled. The refrigerator according to claim 6, wherein a storage part partitioned from the refrigerating compartment is provided on an inner surface of the door of the refrigerating compartment, and the circulation duct is in communication with the storage unit.
KR1020070015994A 2007-02-15 2007-02-15 Refrigerator KR20080076269A (en)

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102620500A (en) * 2012-04-28 2012-08-01 合肥美的荣事达电冰箱有限公司 Refrigerator and control method thereof
KR20150070738A (en) * 2013-12-17 2015-06-25 엘지전자 주식회사 Refrigerator for baby
CN111609626A (en) * 2019-02-26 2020-09-01 青岛海尔电冰箱有限公司 Refrigerator with temperature-changing chamber for returning air on side wall of cooling chamber
CN114674105A (en) * 2022-03-09 2022-06-28 海信（山东）冰箱有限公司 Refrigerator and control method thereof

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102620500A (en) * 2012-04-28 2012-08-01 合肥美的荣事达电冰箱有限公司 Refrigerator and control method thereof
KR20150070738A (en) * 2013-12-17 2015-06-25 엘지전자 주식회사 Refrigerator for baby
CN111609626A (en) * 2019-02-26 2020-09-01 青岛海尔电冰箱有限公司 Refrigerator with temperature-changing chamber for returning air on side wall of cooling chamber
CN114674105A (en) * 2022-03-09 2022-06-28 海信（山东）冰箱有限公司 Refrigerator and control method thereof
CN114674105B (en) * 2022-03-09 2024-04-05 海信冰箱有限公司 Refrigerator and control method thereof

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