KR100774003B1 - Refrigerator - Google Patents

Abstract

A refrigerator is provided to drive any one of blower fans for freezing and refrigerating compartments at a higher speed and the other one at a lower speed when a blower fan for an auxiliary storing chamber is driven than when not driven, and to open a chilled air outlet of the auxiliary storing chamber when the blower fan for the auxiliary storing chamber is driven while closing it when not driven. A refrigerator includes blower fans(40a,40b) for freezing and refrigerating compartments(15a,15b) to blow chilled air generated in evaporators(30a,30b) to the compartments formed in a main cabinet(10), wherein a transmission part changes the rotation speed of the blower fans. An auxiliary cabinet(60) is formed with a chilled air inlet(67) for introducing the chilled air of the freezing compartment, and a chilled air outlet(69) for discharging the chilled air to the evaporator of the refrigerating compartment, wherein the auxiliary cabinet has an auxiliary storing chamber(65) defined in the refrigerating compartment. A blower fan(70) blows the chilled air of the freezing compartment to the auxiliary storing chamber. A control part controls the transmission part in such a manner that the transmission part drives the freezing compartment blower fan at a higher speed and the refrigerating compartment blower fan at a lower speed when the auxiliary storing chamber blower fan is driven than when not driven. A damper(80) is installed at the chilled air outlet for opening and closing the outlet in response to starting and stopping of the auxiliary storing chamber blower fan, respectively, under the control of the control part.

Description

Refrigerator {REFRIGERATOR}

1 is a front view showing a schematic view of a refrigerator according to the present invention;

2 is a longitudinal section of the refrigerator compartment side of the refrigerator according to the present invention;

3 is a cross-sectional view of a refrigerator according to the present invention;

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

5 is a view illustrating a control method of a transmission unit for each operation mode according to whether or not the auxiliary storage chamber blowing fan of the refrigerator according to the present invention is driven.

Explanation of symbols on the main parts of the drawings

1: refrigerator 10: main cabinet

15: main storage room 15a: freezer

15b: refrigerating chamber 30: evaporator

35 compressor 40 main storage fan

40a: freezer compartment blower fan 40b: cold compartment blower fan

50: transmission 60: auxiliary cabinet

65: auxiliary storage room 67: cold air inlet

67a: inlet duct 69: cold air outlet

69a: exhaust duct 70: auxiliary storage room blowing fan

80: damper 90a: freezer temperature sensor

90b: Cold room temperature sensor 95: Auxiliary storage room temperature sensor]

100: control unit

The present invention relates to a refrigerator, and more particularly, to a refrigerator capable of more stable operation by minimizing the influence of the operation of the auxiliary storage room on the internal temperature and the operation control of the main storage room.

A typical refrigerator includes a main body cabinet in which a freezer compartment and a refrigerating compartment are formed, an evaporator for generating cold air supplied to the freezer compartment and a refrigerating compartment, and a freezer blower fan and a refrigerating compartment ventilator for blowing cold air generated in the evaporator to the freezer compartment and the refrigerating compartment.

Recently, according to various demands of the consumer, a refrigerator having an auxiliary storage room capable of temperature control independently of the freezer compartment and the refrigerating compartment has been released. In general, the auxiliary storage chamber is formed inside the auxiliary cabinet that is partitioned in the refrigerating chamber.

The auxiliary cabinet is provided with a cold air inlet through which the cold air of the freezer compartment is introduced and communicated with the freezer compartment, and a cold air outlet through which the cold air of the auxiliary storage compartment is discharged to the evaporator side. The cold air inlet is provided with an auxiliary storage compartment blowing fan that blows cold air from the freezer compartment into the auxiliary storage compartment. The reason why the auxiliary storage chamber is in communication with the freezer compartment is that the cooling capacity of the freezer compartment is higher than that of the refrigerator compartment.

Here, the flow rate of the cold air discharged into the freezing chamber is changed depending on whether or not the auxiliary storage chamber blowing fan is driven. In detail, when the auxiliary storage chamber blowing fan is driven to operate the auxiliary storage chamber, the flow rate of the cold air discharged into the freezing chamber by the freezing chamber blowing fan is reduced, thereby decreasing the air volume.

However, when the air volume of the cold air discharged to the freezer compartment by reducing the conventional storage fan blowing fan in the conventional refrigerator, the internal temperature of the freezer compartment detected by the freezer compartment temperature sensor is detected higher than the actual internal temperature, the high temperature of the freezer compartment is set It is operated at a low temperature against temperature, which causes overcooling.

On the other hand, when operating the auxiliary storage room when the compressor is stopped because the internal temperature of the freezer compartment and the refrigerating compartment is satisfied with the set temperature, it is necessary to supply cold air to the auxiliary storage compartment using only the auxiliary storage compartment blowing fan and to discharge cold air to the evaporator side. There is also a problem of poor cooling capacity.

Accordingly, an object of the present invention is to provide a refrigerator capable of more stable operation by minimizing the influence of the operation of the auxiliary storage room on the internal temperature of the main storage room and operation control.

The object of the present invention is a refrigerator having a main cabinet in which a main storage chamber is formed and an evaporator for generating cold air supplied to the main storage chamber, wherein the cold air generated in the evaporator is blown to the main storage chamber. With a fan; A shifting unit configured to shift a rotational speed of the main storage chamber blowing fan; A secondary cabinet configured to form a cold air inlet through which cold air of the main storage chamber is introduced, and a cold air outlet through which cold air is discharged to the evaporator, and to form an auxiliary storage compartment partitioned inside the main storage chamber; An auxiliary storage chamber blowing fan configured to blow cold air from the main storage chamber to the auxiliary storage chamber; And a control unit for controlling the speed change unit to drive the main storage blast fan at high speed, when the auxiliary storage blast fan is driven, when the driving of the auxiliary storage blast fan is stopped.

And a damper for opening and closing the cold air discharge port. The control unit preferably controls the damper to open the cold air outlet when the auxiliary storage ventilating fan is driven and to close the cold air outlet when the auxiliary storage ventilating fan is stopped.

On the other hand, the object is, according to the present invention, in the refrigerator having a main body cabinet formed with a freezer compartment and a refrigerating compartment, and an evaporator for generating cold air supplied to the freezer compartment and the refrigerating compartment, the cold air generated in the evaporator is the freezer compartment and the A freezing compartment blowing fan and a refrigerating compartment blowing fan respectively blowing to the refrigerating compartment; A shifting unit configured to shift rotational speeds of the freezing compartment blowing fan and the refrigerating compartment blowing fan; A secondary cabinet configured to form a cold air inlet through which cold air is introduced into the freezer compartment, and a cold air outlet through which cold air is discharged to the evaporator, and to form an auxiliary storage compartment partitioned inside the refrigerating compartment; An auxiliary storage chamber blowing fan configured to blow cold air from the freezer compartment into the auxiliary storage chamber; And a control unit configured to control the speed change unit to drive at least one of the freezer compartment fan and the refrigerating compartment fan at a high speed or a low speed when the auxiliary storage compartment fan is driven. Can also be achieved.

Preferably, the control unit controls the transmission unit to drive the freezing compartment blowing fan at high speed and to drive the refrigerating compartment blowing fan at low speed, when the auxiliary storage compartment blowing fan is driven, and when the auxiliary storage compartment blowing fan is stopped.

And a damper for selectively opening and closing the cold air outlet; The control unit preferably controls the damper to open the cold air outlet when the auxiliary storage ventilating fan is driven and to close the cold air outlet when the auxiliary storage ventilating fan is stopped.

The evaporator comprises a freezer compartment evaporator and a refrigerator compartment evaporator; Preferably, the cold air outlet is in communication with the freezer compartment evaporator.

Hereinafter, with reference to the accompanying drawings will be described in detail a preferred embodiment of the refrigerator 1 according to the present invention.

The refrigerator 1 according to the present invention includes a main cabinet 10 in which a main storage chamber 15 is formed, an evaporator 30 for generating cold air supplied to the main storage chamber 15, and cold air generated in the evaporator 30. The main storage compartment blowing fan 40 which blows into the main storage compartment 15, the transmission part 50 which changes the rotational speed of the main storage compartment blowing fan 40, and the main storage compartment 15 are divided into the auxiliary storage compartment 65 Auxiliary cabinet 60 to form a), the auxiliary storage chamber blowing fan 70 for blowing the cold air of the main storage chamber 15 to the auxiliary storage chamber 65, and the transmission unit depending on whether the auxiliary storage chamber blowing fan 70 is driven And a control unit 100 for controlling the 50.

The main cabinet 10 includes an outer box 10a that forms the exterior of the refrigerator 1 and an inner box 10b that is spaced apart from the outer box 10a and the insulation filling gap therebetween to form the main storage chamber 15. do.

The main storage chamber 15 includes a freezing chamber 15a and a refrigerating chamber 15b which are partitioned to both sides of the main cabinet 10 by the intermediate partition 13. In the present embodiment, the freezer compartment 15a is disposed on the left side of the main cabinet 10 and the refrigerator compartment 15b is disposed on the right side, but the positions of the freezer compartment 15a and the refrigerator compartment 15b may be changed. Of course. On the other hand, the main storage chamber 15 has a front opening. Here, the front region of the main cabinet 10 includes a main control word 20 for opening and closing the front opening of the main storage chamber 15.

The main door 20 includes a freezer compartment door 20a for opening and closing the front opening of the freezer compartment 15a and a refrigerating compartment door 20b for opening and closing the front opening of the refrigerator compartment 15b. As shown in FIG. 1, the main control 20 rotates with respect to the main cabinet 10 and opens and closes the front opening of the main storage chamber 15. Although not illustrated, the main control unit 20 is provided in a drawer type and slides and the main storage chamber 15 is shown. You can open and close the front opening of).

The evaporator 30 is a component of a cooling cycle that generates cold air and supplies it to the main storage chamber 15. Here, the cooling cycle includes a compressor 35 for compressing the refrigerant, a condenser (not shown) for condensing the refrigerant compressed by the compressor 35, an expansion mechanism (not shown) for expanding the refrigerant condensed in the condenser, and expansion. A closed loop is formed of an evaporator 30 that evaporates the refrigerant supplied from the apparatus and heat-exchanges the latent heat of evaporation of the refrigerant with the air in the main storage chamber 15 to generate cold air. Since the configuration and operation of such a cooling cycle are already known, a detailed description of the cooling cycle will be omitted in this embodiment.

The evaporator 30 is arranged in the rear region of the freezing chamber 15a and generates a cold air supplied to the freezing chamber 15a, and is provided in the rear region of the refrigerating chamber 15b and supplied to the refrigerating chamber 15b. And a refrigerating chamber evaporator 30b for generating cold air. In this embodiment, the evaporator 30 is described as a pair of freezer compartment evaporator (30a) and the refrigerator compartment evaporator (30b), but as is known, may be provided as one of course. On the front of the evaporator 30 is provided a cold air duct 25 which partitions the storage space 19 and the evaporator 30, in which goods are stored, and guides the cold air generated in the evaporator 30 to the main storage chamber 15. . Here, the cold air duct 25 forms an evaporator accommodating part 17 in which the evaporator 30 is accommodated. Meanwhile, the cold air generated by the evaporator 30 is blown into the main storage chamber 15 by the main storage chamber blowing fan 40.

The main storage blast fan 40 blows the cold air generated in the freezer compartment evaporator 30a to the freezer compartment 15a and the cold air generated in the freezer compartment evaporator 30b to the refrigerator compartment 15b. A refrigeration chamber blowing fan 40b is included.

The transmission unit 50 varies the rotation speed of the main storage ventilation fan 40. In this embodiment, the speed change unit 50 is described as shifting the rotational speed of the main storage chamber blowing fan 40 in two stages of high speed driving and low speed driving for convenience of description. However, it is noted that the transmission unit 50 may shift the rotational speed of the main storage chamber blowing fan 40 in a plurality of stages or more.

The auxiliary cabinet 60 is partitioned inside the main storage chamber 15 to form the auxiliary storage chamber 65. In this embodiment, the auxiliary cabinet 60 is disposed inside the refrigerating chamber 15b. However, the auxiliary cabinet 60 may be disposed in the freezing compartment 15a. The auxiliary cabinet 60 preferably includes an insulating material so that the auxiliary storage chamber 65 maintains an independent temperature regardless of the internal temperature of the main storage chamber 15. Here, the auxiliary cabinet 60 may include an outer box 60a and an inner box 60b which are spaced apart from each other with a gap between the fillings of the insulating material, similar to the main cabinet 10.

The auxiliary cabinet 60 may be provided in a drawer type as shown in FIG. 2, or may be provided in a rotation opening / closing type although not shown.

The auxiliary cabinet 60 is provided with a cold air inlet 67 through which cold air from the main storage chamber 15 flows, and a cold air outlet 69 through which cold air from the auxiliary storage chamber 65 is discharged to the evaporator 30 side. Here, in the present embodiment, the cold air inlet 67 is in communication with the freezing chamber 15a, and the cold air outlet 69 is in communication with the evaporator accommodating portion 17. On the other hand, the main body cabinet 10 has an inlet duct 67a for communicating the cold air inlet 67 of the auxiliary cabinet 60 to the freezer compartment 15a, and the cold air outlet 69 of the auxiliary cabinet 60 with an evaporator accommodating part ( The discharge duct 69a which communicates with 17) is provided.

The inflow duct 67a is formed to penetrate the intermediate partition 13 of the main cabinet 10. The inlet duct 67a is equipped with an auxiliary storage chamber blowing fan 70 that blows cold air from the freezing chamber 15a to the auxiliary storage chamber 65. On the other hand, the auxiliary storage chamber blowing fan 70 may be disposed in the cold air inlet 67 of the auxiliary cabinet 60.

The discharge duct 69a is formed to penetrate the intermediate partition 13 of the main cabinet 10. The discharge duct 69a is equipped with a damper 80 for controlling cold air flowing through the discharge duct 69a.

The damper 80 is disposed in the discharge duct 69a to open and close the cold air discharge port 69 of the auxiliary cabinet 60. The damper 80 has an open position A for communicating the cold air outlet 69 of the auxiliary storage chamber 65 and the evaporator accommodating portion 17, and the cold air outlet 69 and the evaporator accommodating portion 17 of the auxiliary storage chamber 65. It is provided so that a movement is possible between the closed positions B which block | blocks between.

On the other hand, the freezer compartment 15a is provided with a freezer compartment temperature sensor 90a for detecting the internal temperature of the freezer compartment 15a, and the refrigerating compartment 15b is provided with a refrigerator compartment temperature sensor 90b for detecting the internal compartment temperature of the refrigerator compartment 15b. In addition, the auxiliary storage chamber 65 is provided with an auxiliary storage chamber temperature sensor 95 for detecting the internal temperature of the auxiliary storage chamber 65. The temperature detected by the freezer compartment temperature sensor 90a, the refrigerator compartment temperature sensor 90b, and the auxiliary storage compartment temperature sensor 95 is the compressor 35, the freezer compartment blower fan 40a, the refrigerator compartment blower fan 40b, and the transmission unit 50. ), The auxiliary storage room blowing fan 70 and the damper 80, etc. are used as the control basic information.

If the temperature detected by the freezer compartment temperature sensor 90a is greater than or equal to the set freezer compartment temperature range and the temperature detected by the refrigerator compartment temperature sensor 90b is greater than or equal to the preset compartment temperature range, the compressor 35 and a freezer compartment blowing fan ( 40a) and the refrigerator compartment blowing fan 40b are operated in the F & R actual operation mode. And, the control unit 100, if the temperature detected by the freezer compartment temperature sensor (90a) is greater than the set freezer temperature range and the temperature detected by the refrigerator compartment temperature sensor (90b) is within the set refrigerator compartment temperature range, the compressor (35) and the freezer blowing fan. Operate in the real run mode of driving 40a. And, the control unit 100, if the temperature detected by the freezer compartment temperature sensor (90a) is within the set freezer temperature range and the temperature detected by the refrigerator compartment temperature sensor (90b) is within the set refrigerator room temperature degree range, the compressor 35, and the freezer compartment It enters a stop mode for stopping the driving of the blowing fan 40a and the refrigerating chamber blowing fan 40b.

Here, since the temperature control of the auxiliary storage chamber 65 is controlled by the user's set temperature regardless of the operation mode, the control unit 100 is the secondary storage temperature range set by the user the temperature detected by the auxiliary storage temperature sensor 95 The driving of the auxiliary storage chamber blowing fan 70 is controlled to maintain the inside. Here, the control unit 100 moves the damper 80 to the open position (A) when the auxiliary storage blower fan 70 is driven, and closes the damper 80 when the auxiliary storage blower fan 70 is stopped. Go to (B). Thus, the cold air of the freezer compartment 15a flows into the auxiliary storage chamber 65, and the cold air in the auxiliary storage chamber 65 moves to the evaporator accommodating part 17 to cool the auxiliary storage chamber 65. In addition, when the auxiliary storage chamber blowing fan 70 stops driving, the control unit 100 moves the damper 80 to the closed position B, whereby cold air between the freezer compartment 15a and the auxiliary storage chamber 65 due to the pressure difference is caused. The flow can be prevented.

On the other hand, the control unit 100 is a high speed or at least one of the freezing compartment blowing fan 40a and the refrigerating compartment blowing fan 40b at the time of driving the auxiliary storage compartment blowing fan 70 when the auxiliary storage compartment blowing fan 70 is stopped. The speed change section 50 is controlled to drive at a low speed.

The control unit 100 controls the transmission unit 50 to drive the freezing compartment blowing fan 40a at a higher speed than when the auxiliary storage compartment blowing fan 70 is driven or stopped.

The control unit 100 controls the transmission unit 50 to drive the refrigerating chamber blowing fan 40b at a low speed as compared with the driving stop of the auxiliary storage chamber blowing fan 70. Here, the control unit 100 may of course control the transmission unit 50 so as not to change the speed of the refrigerating chamber blowing fan 40b.

Hereinafter, the control method of the transmission unit 50 and the damper 80 according to whether the auxiliary storage room blowing fan 70 is driven in each operation mode will be described in detail.

In the F & R actual operation mode, if the temperature detected by the auxiliary storage room temperature sensor 95 is greater than or equal to the set auxiliary storage room temperature range, the control unit 100 drives the auxiliary storage room blowing fan 70 and opens the damper 80 in the open position (A). Go to. Here, the controller 100 controls the transmission unit 50 so that the freezing compartment blowing fan 40a is driven at high speed, and the refrigerating compartment blowing fan 40b is driven at low speed. Cold air blown into the freezer compartment 15a by the freezer compartment blower 40a by controlling the transmission unit 50 to drive the freezer compartment blower fan 40a at high speed when the auxiliary storage compartment blower fan 70 is driven in the F & R real operation mode. The amount of air is reduced so that the freezing chamber is prevented from being over-frozen, and thus the cooling performance of the freezing chamber 15a can be kept constant regardless of whether the auxiliary storage chamber blowing fan 70 is driven. Thus, the cooling efficiency of the freezing chamber 15a and the auxiliary storage chamber 65 can be improved. Here, by controlling the transmission unit 50 to drive the refrigerating chamber blowing fan 40b at low speed, it is possible to prevent the overload of the entire cooling cycle.

On the other hand, if the temperature detected by the secondary storage temperature sensor 95 in the F & R actual operation mode is within the set secondary storage temperature range, the control unit 100 stops the operation of the secondary storage blowing fan 70 and closes the damper 80. Move to position B. Here, the control unit 100 controls the transmission unit 50 so that the freezing compartment blowing fan 40a is driven at low speed, and the refrigerating compartment blowing fan 40b is driven at high speed. In the F & R real operation mode, when the auxiliary storage room blower fan stops driving, the freezing room blower fan 40a operates at low speed and controls the transmission unit 50 so as to drive the refrigerator cooler fan 40b at high speed. It is possible to improve the cooling efficiency by cooling the refrigerating compartment quickly enough while preventing overload.

If the temperature sensed by the auxiliary storage room temperature sensor 95 is higher than the set auxiliary storage room temperature range in the F room operation mode, the control unit 100 drives the auxiliary storage room blowing fan 70 and opens the damper 80 in the open position (A). Go to. Here, the controller 100 controls the transmission unit 50 so that the freezing compartment blowing fan 40a is driven at a high speed, and the refrigerating compartment blowing fan 40b is stopped. By controlling the transmission unit 50 to drive the freezing compartment blowing fan 40a at high speed when the auxiliary storage compartment blowing fan 70 is driven in the F room operation mode, the freezer compartment 15a is driven regardless of whether the auxiliary storage compartment blowing fan 70 is driven. The cooling performance of) can be kept constant. Thus, the cooling efficiency of the freezing chamber 15a and the auxiliary storage chamber 65 can be improved.

On the other hand, if the temperature detected by the auxiliary storage room temperature sensor 95 in the F room operation mode is within the set auxiliary storage room temperature range, the control unit 100 stops driving the auxiliary storage room blowing fan 70 and closes the damper 80. Move to position B. Here, the control unit 100 controls the transmission unit 50 so that the freezing compartment blowing fan 40a is driven at a low speed and the refrigerating compartment blowing fan 40b is stopped. As in the present embodiment, by controlling the transmission unit 50 so that the freezing compartment blowing fan 40a is driven at low speed when the auxiliary storage compartment blowing fan 70 is stopped in operation in the F room driving mode, the freezing compartment blowing fan 40a is sufficient. The amount of blowing air can be secured, so that the cooling performance of the freezing chamber 15a can be kept constant. On the other hand, by controlling the speed change unit 50 to drive the freezing compartment blowing fan 40a at high speed, the freezing compartment 15a can be cooled more quickly, and cooling performance can be improved.

If the temperature detected by the secondary storage temperature sensor 95 in the stop mode is above the set secondary storage temperature range, the control unit 100 drives the secondary storage blowing fan 70 and moves the damper 80 to the open position (A). do. Here, the control unit 100 stops driving the compressor 35, and controls the transmission unit 50 so that the freezing compartment blowing fan 40a is driven at low speed and the refrigerating compartment blowing fan 40b is driven. By controlling the transmission unit 50 to drive the freezing compartment blowing fan 40a at a low speed when the auxiliary storage blowing fan 70 is driven in the stop mode, the blowing force of the auxiliary storage blowing fan 70 is reinforced to store the auxiliary storage compartment 65. And the cold air flowing between the freezing chamber 15a can be easily circulated. Thus, the cooling efficiency of the auxiliary storage chamber 65 can be improved. In addition, it is possible to prevent the temperature of the upper region of the freezing chamber 15a from rising sharply by circulating cold air in the upper and lower regions of the freezing chamber 15a. Here, since an ice making unit (not shown) in which ice is usually stored is provided in an upper region of the freezing chamber 15a, a sufficient amount of ice making can be ensured.

If the temperature detected by the auxiliary storage room temperature sensor 95 in the stop operation mode is within the set auxiliary storage room temperature range, the control unit 100 stops driving the auxiliary storage room blowing fan 70 and closes the damper 80 in the closed position (B). Move to). Here, the control unit 100 stops driving the compressor 35, and controls the transmission unit 50 so that the freezing compartment blowing fan 40a and the refrigerating compartment blowing fan 40b stop driving.

As described above, the refrigerator 1 according to the present invention includes a transmission unit 50 for shifting the rotation speed of the main storage chamber blowing fan 40 and an auxiliary storage chamber 65 partitioned inside the main storage chamber 15. When the auxiliary cabinet 60 to be formed, the auxiliary storage chamber blowing fan 70 for blowing the cold air of the main storage chamber 15 to the auxiliary storage chamber 65, and the auxiliary storage chamber blowing fan 70 are driven, and the driving is stopped. By including the control unit 100 for controlling the transmission unit 50 to drive the main storage chamber blowing fan 40 at a high speed, the operation of the auxiliary storage chamber 65 affects the internal temperature of the main storage chamber 15 and the operation control. Minimize the impact to allow more stable operation.

As described above, according to the present invention, it is possible to provide a refrigerator capable of more stable operation by minimizing the influence of the operation of the auxiliary storage room on the high temperature and the operation control of the main storage room.

Claims (6)

A refrigerator having a main body cabinet in which a main storage chamber is formed and an evaporator for generating cold air supplied to the main storage chamber, A main storage chamber blowing fan for blowing cold air generated by the evaporator to the main storage chamber; A shifting unit for shifting a rotational speed of the main storage fan blowing fan; A secondary cabinet configured to form a cold air inlet through which cold air of the main storage chamber is introduced, and a cold air outlet through which cold air is discharged to the evaporator, and to form an auxiliary storage compartment partitioned inside the main storage chamber; An auxiliary storage chamber blowing fan configured to blow cold air from the main storage chamber to the auxiliary storage chamber; And a controller configured to control the speed changer to drive the main storage ventilation fan at high speed when the auxiliary storage ventilation fan is driven and when the auxiliary storage ventilation fan is stopped. The method of claim 1, And a damper for opening and closing the cold air discharge port. And the controller controls the damper to open the cold air outlet when the auxiliary storage ventilating fan is driven and to close the cold air outlet when the auxiliary storage ventilating fan is stopped. A refrigerator having a main body cabinet having a freezing compartment and a refrigerating compartment, and an evaporator for generating cold air supplied to the freezing compartment and the refrigerating compartment, A freezing chamber blowing fan and a refrigerating chamber blowing fan for respectively blowing the cold air generated by the evaporator to the freezing compartment and the refrigerating compartment; A shifting unit configured to shift rotational speeds of the freezing compartment blowing fan and the refrigerating compartment blowing fan; A secondary cabinet configured to form a cold air inlet through which cold air is introduced into the freezer compartment, and a cold air outlet through which cold air is discharged to the evaporator, and to form an auxiliary storage compartment partitioned inside the refrigerating compartment; An auxiliary storage chamber blowing fan configured to blow cold air from the freezer compartment into the auxiliary storage chamber; And a control unit for controlling the speed change unit to drive at least one of the freezing compartment blowing fan and the refrigerating compartment blowing fan at a high speed or a low speed when the auxiliary storage compartment blowing fan is driven at a stop. Refrigerator. The method of claim 3, The control unit controls the speed changer to drive the freezing compartment blowing fan at high speed and to drive the refrigerating ventilation fan at low speed, when the auxiliary storage compartment blowing fan is driven, and when the auxiliary storage compartment blowing fan is stopped. Refrigerator. The method of claim 4, wherein And a damper for selectively opening and closing the cold air outlet; And the controller controls the damper to open the cold air outlet when the auxiliary storage ventilating fan is driven and to close the cold air outlet when the auxiliary storage ventilating fan is stopped. The method of claim 5, The evaporator comprises a freezer compartment evaporator and a refrigerator compartment evaporator; And the cold air outlet communicates with the freezer compartment evaporator.

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