KR20190107355A - Refrigerator and Control method of the same - Google Patents

Abstract

A refrigerator comprises: a main body having a refrigerating compartment and a freezing compartment; a refrigerating compartment temperature sensor for sensing the temperature of the refrigerating compartment; a freezing compartment temperature sensor for sensing the temperature of the freezing compartment; an evaporator for cooling the freezing compartment; a compressor for compressing a refrigerant evaporated by the evaporator; a refrigerating compartment damper for supplying cold air cooled by the evaporator to the refrigerating compartment; a door switch for sensing the opening and closing of a refrigerating compartment door for opening and closing the refrigerating compartment; and a control unit performing a general operation of turning on or off the compressor depending to the temperature of the freezing compartment or to perform a maximum cold power operation of operating the compressor at maximum cold power. The control unit performs the general operation when the maximum temperature reaching time after opening the refrigerating compartment door is between the stabilization temperature change time and the actual load temperature change time, and performs the maximum cold power operation when the maximum temperature reaching time exceeds the actual load temperature change time. The maximum temperature reaching time may be a time at which the temperature of the refrigerating compartment reaches the maximum temperature of the refrigerating compartment from the start of the compressor after the opening of the refrigerating compartment door. Therefore, the present invention minimizes power consumption.

Description

Refrigerator and its operation method {Refrigerator and Control method of the same}

The present invention relates to a refrigerator and a method of operating the same, and more particularly, to a refrigerator and a method of operating the same according to a temperature change when the refrigerator door is opened and closed.

A refrigerator is a device that prevents decay and deterioration by cooling an object to be cooled (hereinafter referred to as a food) such as food, medicine, cosmetics, or at a low temperature.

The refrigerator includes a main body having a storage compartment such as a freezer compartment or a refrigerating compartment in which food is stored, a door connected to the main body to open and close the storage compartment, and a cooling device that cools the storage compartment.

The cooling device may include a compressor, a condenser, an expansion device, and an evaporator through which the refrigerant is circulated.

When the door is opened, outside air may flow into the storage compartment, the storage compartment may be heated up, and the load of the storage compartment may be increased.

The refrigerator can increase the cooling power of the compressor when the load increases, so that the compressor can be optimally operated. An example of such a refrigerator is disclosed in Korean Patent Laid-Open Publication No. 10-2011-0087465 A (published on August 03, 2011). The refrigerator measures the running time of the compressor by a timer, controls the on / off of the compressor according to the temperature value detected by the storage room temperature sensor, and increases the cooling power of the compressor when the load increases, thereby allowing the compressor to operate at an optimum rate. Can be driven by

On the other hand, the refrigerator can perform a load response operation according to the opening time of the door and the internal temperature, an example of such a refrigerator is disclosed in Republic of Korea Patent Publication No. 10-2014-0019594 A (published February 17, 2014) The refrigerator operates the compressor when the refrigerator door is opened for a predetermined time (for example, 1 minute) or more, and the internal temperature of the refrigerating compartment or the refrigerating compartment is higher than the set temperature for a predetermined time while the refrigerator door is not opened for a predetermined time. If it persists, the compressor can be operated and the set temperature inside the freezer or refrigerating compartment can be kept stable at all times.

Republic of Korea Patent Application Publication No. 10-2011-0087465 A (August 03, 2011 published) Republic of Korea Patent Publication No. 10-2014-0019594 A (published February 17, 2014)

The present invention distinguishes a case where a new load is input after an opening of a refrigerating chamber door and a case where a new load is not input after an opening of a refrigerating chamber door, thereby minimizing the power consumption and a refrigerator capable of quickly responding to load fluctuations in the refrigerating compartment and its operation. The purpose is to provide a method.

According to an embodiment of the present invention, a refrigerator includes: a body having a refrigerator compartment and a freezer compartment; A refrigerator compartment temperature sensor for sensing a temperature of the refrigerator compartment; A freezer compartment temperature sensor for sensing a temperature of the freezer compartment; An evaporator for cooling the freezer compartment and a compressor for compressing the refrigerant evaporated by the evaporator; A refrigerator compartment damper for supplying cold air cooled by an evaporator to the refrigerator compartment; A door switch for detecting opening and closing of the refrigerating chamber door for opening and closing the refrigerating compartment; The control unit includes a control unit that performs a general operation of turning on and off the compressor according to the temperature of the freezer compartment, or performs a maximum cold power operation of operating the compressor at the maximum cold power. Normal operation is performed when the temperature is between and the actual load temperature change time, and when the maximum temperature arrival time exceeds the actual load temperature change time, maximum cold power operation is performed.

The maximum temperature attainment time is the time at which the temperature of the refrigerating chamber reaches the maximum temperature of the refrigerating chamber after the refrigerating chamber door is opened.

A method of operating a refrigerator according to an embodiment of the present invention is a general operation of a refrigerator in which a general operation of turning on or off a compressor according to a temperature of a freezer compartment or a maximum cold power operation of operating a compressor at maximum cold power is performed. Calculating a maximum temperature reaching time required for the temperature of the refrigerating compartment to reach the maximum temperature of the refrigerating compartment from the time of operation of the compressor after the refrigerating compartment door is opened in the middle of the refrigerator; If the maximum temperature reached time exceeds the actual load temperature change time, it may include the step of performing the maximum cold power operation.

The operation method of the refrigerator can maintain normal operation if the maximum temperature reaching time is between the stabilization temperature change time and the actual load temperature change time.

The stabilization temperature change time may be determined by the time taken for the temperature of the refrigerating chamber to reach the maximum temperature of the refrigerating chamber from the operation of the compressor while the refrigerating chamber door is kept closed.

The actual load temperature change time may be a time that is greater than or equal to a set multiple of the stabilization temperature change time of the time taken for the temperature of the refrigerator compartment to reach the maximum temperature of the refrigerator compartment after the operation of the compressor after opening the refrigerator compartment door.

According to an embodiment of the present invention, after opening the refrigerating chamber door, the new load is added and the new load is not inputted by the time when the temperature of the refrigerating compartment reaches the maximum temperature of the refrigerating compartment from the operation of the compressor. It is possible to cope with each load when there is no new load input and when there is a new load input while minimizing the power.

1 is a view showing a refrigerator according to an embodiment of the present invention;
2 is a control block diagram of a refrigerator according to an embodiment of the present invention;
3 is a view showing a refrigerator compartment temperature change when the refrigerator compartment door of the refrigerator according to the embodiment of the present invention is closed;
4 is a view showing a refrigerator compartment temperature change when a new load is input after the refrigerator compartment door of the refrigerator according to an embodiment of the present invention;
5 is a view showing a refrigerator compartment temperature change when a new load is not input after the refrigerator compartment door of the refrigerator according to an embodiment of the present invention;
6 is a flowchart illustrating a method of operating a refrigerator according to an embodiment of the present invention.

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

1 is a view showing a refrigerator according to an embodiment of the present invention, Figure 2 is a control block diagram of a refrigerator according to an embodiment of the present invention. And, Figure 3 is a view showing the change in the refrigerator compartment temperature when the refrigerator compartment door of the refrigerator according to the embodiment of the present invention is closed, Figure 4 is a novel after opening the refrigerator compartment door of the refrigerator according to the embodiment of the present invention 5 is a view illustrating a change in the refrigerating compartment temperature when a load is applied, and FIG. 5 is a view illustrating a change in the refrigerating compartment temperature when a new load is not input after the refrigerating compartment door of the refrigerator according to the embodiment of the present invention is opened.

The refrigerator may include a main body 1 in which a refrigerating chamber R and a freezing chamber F are formed. The refrigerator may include a refrigerator compartment door 2 that opens and closes the refrigerator compartment R and a freezer compartment door 3 that opens and closes the freezer compartment F.

The main body 1 may include a barrier 10 partitioning the refrigerating chamber R and the freezing chamber F. The cabinet 1 may include an outer case 11 forming an exterior, a refrigerating compartment inner case 12 having a refrigerating compartment R, and a freezing compartment inner case 13 having a freezing compartment F formed therein.

The refrigerating compartment door 2 and the freezing compartment door 3 may be rotatably connected to the cabinet 1 by a hinge, and each of them may be provided in singular or plural.

The refrigerator may include a refrigerating compartment temperature sensor 5 detecting a temperature of the refrigerating compartment R and a freezing compartment temperature sensor 6 detecting a temperature of the freezing compartment F.

The refrigerator compartment temperature sensor 6 may detect the temperature of the refrigerator compartment R and transmit the detected temperature to the controller 50.

The freezer compartment temperature sensor 6 may detect the temperature of the freezer compartment F and transmit it to the controller 50.

The refrigerator may include an evaporator 21 for cooling the freezer compartment F and a compressor 22 for compressing the refrigerant evaporated by the evaporator 21. The refrigerator may further include a condenser 23 in which the refrigerant compressed by the compressor 22 is condensed, and an expansion mechanism (not shown) such as a capillary tube for expanding the refrigerant condensed in the condenser 23.

The evaporator 21 may be disposed in the freezer compartment inner case 13, and the compressor 22 and the condenser 23 may be disposed in the machine compartment M formed to be partitioned from the freezer compartment F and the refrigerating compartment R in the main body 1. Can be arranged.

In the refrigerator, one evaporator 21 may cool both the freezer compartment and the refrigerating compartment, and the main body 1 has a cold air supply passage 14 for guiding the cold air cooled by the evaporator 21 to the refrigerating compartment inner case 12. Can be formed. In addition, a cold air return (not shown) may be formed in the main body 1 to guide the cold air of the refrigerating chamber R to the evaporator 21.

The refrigerator may include a refrigerator compartment damper 30 that supplies the cold air cooled by the evaporator 21 to the refrigerator compartment R. The refrigerator compartment damper 30 may be disposed in the cold air supply passage 14 or the refrigerator compartment inner case 12. The refrigerating chamber damper 30 may include a damper case having a passage through which cold air passes, a damper body disposed to rotate or move in the damper case to open and close the passage, and a driving source such as a motor to rotate or move the damper body. Can be.

The refrigerator may further include a freezing compartment fan 34 which circulates cold air in the freezing compartment F to the evaporator 21 and the freezing compartment F. The freezer compartment 34 may be disposed in the freezer compartment inner case 13.

The refrigerator may further include a refrigerating chamber fan 36 for flowing the cold air cooled in the evaporator 21 to the refrigerating chamber R. The refrigerator compartment fan 36 may be disposed in the refrigerator compartment inner case 12.

The refrigerator may further include a door switch 40 that detects opening and closing of the refrigerating compartment door 2 that opens and closes the refrigerating compartment R.

The refrigerator may further include a controller 50 that controls the compressor 22. The controller 50 may control the freezing compartment fan 34 and the refrigerating compartment fan 36. The controller 50 may control the refrigerator compartment damper 30.

The controller 50 may drive the freezer compartment 34 together with the compressor 22.

The controller 50 may open the refrigerator compartment damper 30 when the refrigerator compartment temperature is not satisfied, and close the refrigerator compartment damper 30 when the refrigerator compartment temperature is satisfied. The controller 50 may drive the refrigerator compartment fan 36 when the refrigerator compartment damper 30 is opened.

The refrigerator may further include an input unit 60 through which a user may input a freezer target temperature or a freezer target temperature. The refrigerator may further include a timer 70 capable of counting time. The refrigerator may further include a storage unit 80 such as a memory in which various data such as a temperature value and a time may be stored.

The controller 50 may turn on or off the compressor 22 according to the temperature of the freezing chamber F. The controller 50 may operate the compressor 22 at the maximum cooling power according to the temperature TR of the refrigerating chamber R when the refrigerating chamber door 2 is opened.

The controller 50 may perform a general operation of turning on or off the compressor 22 according to the temperature of the freezer compartment F or may perform a maximum cold power operation of operating the compressor 22 at the maximum cold power.

When the temperature of the freezer compartment F detected by the freezer compartment temperature sensor 6 rises to an upper limit temperature (eg, the freezer compartment target temperature + 1 ° C) of the freezer compartment target temperature during normal operation, the controller 50 controls the compressor 22. ), And when the temperature of the freezer compartment F detected by the freezer compartment temperature sensor 6 falls to the lower limit temperature of the freezer compartment target temperature (eg, the freezer compartment target temperature-1 ° C), the compressor 22 is turned off. Can be turned off.

In normal operation, the controller 50 may open and close the refrigerator compartment damper 30 according to the temperature of the refrigerator compartment R. In the normal operation, the controller 50 controls the temperature TR of the refrigerating chamber R detected by the refrigerating chamber temperature sensor 5 to be the upper limit temperature of the refrigerating chamber target temperature (for example, 3 ° C.) (for example, the refrigerating chamber target temperature). + 1 ° C.), the refrigerator compartment damper 30 can be opened, and the temperature TR of the refrigerator compartment R detected by the refrigerator compartment temperature sensor 5 is the lower limit temperature (eg, the freezer compartment) of the target temperature of the refrigerator compartment. When the temperature falls to the target temperature-1 ° C, the refrigerator compartment damper 30 can be closed.

The controller 50 may drive the compressor 22 at the maximum frequency and at the maximum stroke in the case of the maximum cold power operation. When the compressor 22 is a scroll compressor, the controller 50 can drive the compressor 22 at the maximum frequency. When the compressor 22 is a linear compressor, the controller 50 strokes the compressor 22 at maximum stroke. Can be driven.

The maximum cold power operation may be performed until the temperature of the refrigerating compartment R is lowered to the lower limit temperature of the refrigerating compartment target temperature (for example, the freezer target temperature-1 ° C), and the temperature of the refrigerating compartment R is When the temperature falls to the lower limit temperature (eg, freezer target temperature-1 ° C), the process may be terminated.

The controller 50 may be driven at the maximum rotational speed of at least one of the freezing compartment fan 34 and the refrigerating compartment fan 36 in the case of maximum cooling operation. The control unit 50, when the freezer compartment 34 and the refrigerating compartment fan 36 is driven at any one of the low speed, the medium speed and the high speed rotation, the freezer compartment 34 and the refrigerator compartment fan 36 Can be driven at high speed.

The refrigerator can be operated in normal operation while the refrigerating chamber door 2 is kept closed. In addition, the refrigerator may be operated in the normal operation or the maximum cold operation when the refrigerator compartment door 2 is opened.

The refrigerator may close the refrigerator compartment door 2 without opening a new compartment after opening the refrigerator compartment door 2, in which case the temperature change of the refrigerator compartment R is small, and the refrigerator is operated in a normal operation so that power consumption is not increased. Can be.

The refrigerator may be closed after the opening of the refrigerating chamber door 2, and then the refrigerating chamber door 2 may be closed. In this case, the temperature change of the refrigerating chamber R may be larger than when no new load is added, and the refrigerator is at maximum. It is operated by cold power operation and can quickly lower the temperature in the refrigerating chamber (R).

When the refrigerating chamber door 2 is kept closed while the refrigerator is operating in a normal operation, the temperature TR of the refrigerating chamber R is raised to the upper limit temperature of the target temperature and the lower limit temperature of the target temperature, as shown in FIG. It can be repeated to descend.

As the temperature TR of the refrigerating compartment R is shown in FIG. 3, the compressor 22 may be turned on and off according to the temperature of the freezing compartment F while the temperature TR of the refrigerating compartment R is changed, and the controller 50 may be turned off. ), The time T1 at which the temperature TR of the refrigerating chamber reaches the maximum temperature of the refrigerating chamber (for example, 3.9 ° C) from the time when the compressor 22 is turned on, may be counted by the timer 70. .

When the refrigerator is operated in the normal operation and the refrigerator door 2 is closed, the time T1 at which the temperature TR of the refrigerator compartment reaches the maximum temperature of the refrigerator compartment (for example, 3.9 ° C.) from the time when the compressor 22 is turned on (T1) ) Can be defined as "stabilization temperature change time".

That is, the stabilization temperature change time T1 may be determined by the time taken for the temperature TR of the refrigerating compartment to reach the maximum temperature of the refrigerating compartment while the compressor 22 is driven while the refrigerating compartment door 2 is closed. .

The controller 50 may store the stabilization temperature change time T1 in the storage 80.

Whenever the control unit 50 repeatedly increases and decreases the temperature TR of the refrigerating chamber, the control unit 50 may calculate the stabilization temperature change time, update each time with a new stabilization temperature change time, and store the same in the storage unit 80. . On the other hand, the controller 50 calculates the stabilization temperature change time each time the temperature TR of the refrigerating chamber is raised and lowered repeatedly, and the stabilization temperature change time measured for the set number of times (for example, three times). It is also possible to determine and update the average value of these as the stabilization temperature change time to store in the storage unit 80.

On the other hand, Figure 4 is a diagram showing the temperature change of the refrigerating compartment when the new load is put in the refrigerating chamber (R) after the refrigerating chamber door is opened during the normal operation of the refrigerator, the refrigerating chamber door (2) is opened and the new load is added As shown in FIG. 4, the temperature TR of the refrigerating compartment may be raised higher than an upper limit temperature (eg, 4 ° C.) of the target temperature of the refrigerating compartment.

After the refrigerating chamber door 2 is opened, while the temperature TR of the refrigerating chamber R is varied as shown in FIG. 4, the compressor 22 is turned on and off in accordance with the temperature of the freezing chamber F. The controller 50 may include a time T2 when the compressor 22 is driven, that is, when the compressor 22 is turned on until the temperature TR of the refrigerating chamber reaches the maximum temperature of the refrigerating chamber (for example, 8.4 ° C.). Can be counted by the timer 70.

After the refrigerating chamber door 2 is opened, the time T2 at which the temperature TR of the refrigerating chamber reaches the maximum temperature of the refrigerating chamber (for example, 8.4 ° C) from the time when the compressor 22 is turned on is "actual load temperature change time." Can be calculated with ".

The controller 50 may continuously calculate the actual load temperature change time T2 while the use of the refrigerator is continued, and the controller 50 may perform the stabilization temperature change time T1 of the calculated actual load temperature change time T2. The time more than the set multiple of the update to the actual load temperature change time (T2) can be stored in the storage unit 80.

That is, the actual load temperature change time (T2) is the stabilization temperature change time of the time required for the temperature (TR) of the refrigerating compartment to reach the maximum temperature of the refrigerating compartment after the operation of the compressor 22 after opening the refrigerating compartment door (2) ( It may be a time equal to or greater than the set multiple of T1).

For example, when the stabilization temperature change time T1 is 290 seconds, after opening of the refrigerating chamber door 2, the temperature TR of the refrigerating chamber is the maximum temperature of the refrigerating chamber (for example, 8.4 ° C.) after the compressor 22 is turned on. The time T2 to be reached) may be 1160 seconds, and this time, 1160 seconds, may be updated to a real load temperature change time T2 since at least 3 times greater than 290 seconds of the stabilization temperature change time T1. The controller 50 may store the actual load temperature change time T2 in the storage 80.

5 is a view illustrating a change in the refrigerating compartment temperature when the refrigerator compartment door is opened while the refrigerator is in normal operation but no new load is put into the refrigerating compartment (R), and the refrigerating compartment door 2 is opened and the temperature of the refrigerating compartment ( As shown in FIG. 5, the predetermined temperature (eg, higher than the upper limit temperature (eg, 4 ° C.) of the target temperature of the refrigerating compartment, but lower than the maximum temperature of the refrigerating compartment (eg, 8.4 ° C.) at the time of a new load is applied. For example, 5.1 ° C.).

The control unit 50 opens the refrigerator compartment door 2 while the refrigerator is operating in the normal operation, and after the compressor 22 is driven, when the temperature TR of the refrigerator compartment reaches the maximum temperature of the refrigerator compartment and decreases, the compressor 22 The time at which the temperature TR of the refrigerating chamber reaches the maximum temperature of the refrigerating chamber can be calculated as the maximum temperature reaching time T3, and the controller 50 stabilizes the calculated maximum temperature reaching time T3. It can be compared with the temperature change time (T1) and the actual load temperature change time (T2), respectively. If the maximum temperature reaching time (T1) is between the stabilization temperature change time (T2) and the actual load temperature change time (T3), the controller 50 lowers the temperature of the refrigerating chamber (R) as shown in FIG. Can be carried out.

On the other hand, if the maximum temperature reaching time (T2) is greater than the actual load temperature change time (T3), the controller 50 performs the maximum cold-power operation to rapidly lower the temperature of the refrigerating chamber (R), as shown in FIG. can do.

6 is a flowchart illustrating a method of operating a refrigerator according to an embodiment of the present invention.

In the operation method of the refrigerator of the present embodiment, in the operation method of the refrigerator for performing a general operation for turning on and off the compressor 22 in accordance with the temperature of the freezer compartment F or for a maximum cold power operation for operating the compressor at maximum cold power, Computing the maximum temperature reaching time (T3) (S1 ~ S7), and operating the refrigerator in the maximum cold operation (S8 ~ S10).

In the step S1 to S7 of calculating the maximum temperature reaching time T3, if the compressor 22 is driven after the refrigerating chamber door 2 is opened during the normal operation, the refrigerator 22 is driven from the time when the compressor 22 is driven. It may be a step of calculating the maximum temperature reaching time (T3) required to reach the maximum temperature of the refrigerator compartment.

While the refrigerator is operating in the normal operation, the refrigerating chamber door 2 is opened, and then the compressor 22 may be driven (on) by the temperature of the freezing chamber F. (S1) (S2) (S3)

The control unit 50 stores the temperature (start temperature) detected by the refrigerating compartment temperature sensor 5 and the time (hereinafter, referred to as start time) when the compressor 22 is turned on in the storage unit 80. (S4)

The temperature of the refrigerating compartment (R) may be raised by the fresh air introduced by the user when the refrigerating chamber door 2 is opened or by a new load input by the user, and may be raised to the maximum temperature and then lowered, and the controller 50 may be The temperature immediately before the temperature TR is lowered can be selected as the maximum temperature, and the temperature (end temperature) immediately before the temperature TR of the refrigerating chamber is lowered and the time (hereinafter referred to as the end time) are stored. It can be stored in the unit 80. (S5) (S6)

The controller 50 may calculate the difference between the end time and the start time stored in the storage 80 as the maximum temperature arrival time T3.

Steps S8 to S10 of operating in the maximum cold power operation may be performed when the calculated maximum temperature arrival time T3 is greater than the actual load temperature change time T2.

The operation method of the refrigerator can maintain normal operation if the maximum temperature arrival time T3 is between the stabilization temperature change time T1 and the actual load temperature change time T2. (S8) (S9) (S11)

Here, the stabilization temperature change time T1 may be determined by the time taken for the temperature TR of the refrigerating chamber to reach the maximum temperature of the refrigerating chamber while the refrigerating chamber door 2 is kept closed. .

After the opening of the refrigerating chamber door 2, the actual load temperature change time T2 is the stabilization temperature change time T1 of the time taken for the temperature of the refrigerating chamber to reach the maximum temperature of the refrigerating chamber after the compressor 22 is driven. It may be a time that is more than a set multiple.

Steps S8 to S10 operated at the maximum cold force are stages at which the compressor 22 is driven at the maximum cold force, and the temperature of the refrigerating chamber R may be rapidly lowered as shown in FIG. 4. Steps S8 to S10 operated at the maximum cooling power may be terminated when the temperature of the refrigerating chamber R is lowered and lowered to the lower limit temperature of the target temperature of the refrigerating chamber (for example, the freezer target temperature-1 ° C). When the operation step (S8 ~ S10) is finished, the refrigerator can be operated in normal operation.

The above description is merely illustrative of the technical idea of the present invention, and those skilled in the art to which the present invention pertains may make various modifications and changes without departing from the essential characteristics of the present invention.

Therefore, the embodiments disclosed in the present invention are not intended to limit the technical idea of the present invention but to describe the present invention, and the scope of the technical idea of the present invention is not limited by these embodiments.

The protection scope of the present invention should be interpreted by the following claims, and all technical ideas within the equivalent scope should be interpreted as being included in the scope of the present invention.

1: main body 5: fridge temperature sensor
6: freezer temperature sensor 21: evaporator
22: Compressor 30: Refrigerator Damper
40: door switch 50: control unit

Claims (7)

A main body in which a refrigerating chamber and a freezing chamber are formed;
A refrigerator compartment temperature sensor detecting a temperature of the refrigerator compartment;
A freezer compartment temperature sensor detecting a temperature of the freezer compartment;
An evaporator for cooling the freezer compartment,
A compressor for compressing the refrigerant evaporated by the evaporator;
A refrigerator compartment damper for supplying cold air cooled by the evaporator to the refrigerator compartment;
A door switch for detecting opening and closing of the refrigerating chamber door for opening and closing the refrigerating compartment;
And a control unit configured to perform a general operation of turning on or off the compressor according to the temperature of the freezer compartment or to perform a maximum cold power operation of operating the compressor at a maximum cold power.
The control unit performs the general operation if the maximum temperature reaching time is between the stabilization temperature change time and the actual load temperature change time after the refrigerating chamber door is opened.
If the maximum temperature reached time exceeds the actual load temperature change time, the maximum cold power operation is performed,
The maximum temperature reaching time is a time at which the temperature of the refrigerating compartment reaches the maximum temperature of the refrigerating compartment after the opening of the refrigerating compartment door. The method of claim 1,
The stabilization temperature change time is determined by the time taken for the temperature of the refrigerating compartment to reach the maximum temperature of the refrigerating compartment from the operation of the compressor while the refrigerating compartment door is kept closed. The method of claim 1,
And the actual load temperature change time is a time that is equal to or greater than a set multiple of the stabilization temperature change time of the time taken for the temperature of the refrigerating compartment to reach the maximum temperature of the refrigerating compartment after the operation of the compressor after opening of the refrigerating compartment door. In the operation method of the refrigerator to perform a general operation to turn on or off the compressor according to the temperature of the freezer compartment, or to perform a maximum cold power operation to operate the compressor at the maximum cold power,
Calculating a maximum temperature reaching time required for the temperature of the refrigerating compartment to reach the maximum temperature of the refrigerating compartment from the time of operation of the compressor if the compressor is driven after the refrigerating compartment door is opened during the normal operation;
If the maximum temperature reaching time exceeds the actual load temperature change time, operating the refrigerator including the step of performing the maximum cold power operation. The method of claim 4, wherein
And operating the normal operation when the maximum temperature reaching time is between the stabilization temperature change time and the actual load temperature change time. The method of claim 5,
The stabilization temperature change time is determined by the time taken for the temperature of the refrigerating compartment to reach the maximum temperature of the refrigerating compartment from the operation of the compressor while the refrigerating compartment door is kept closed. The method of claim 6,
The actual load temperature change time is the operation method of the refrigerator after the opening of the refrigerating chamber door, the time required for the temperature of the refrigerating compartment to reach the maximum temperature of the refrigerating compartment from the time of the operation of the compressor is equal to or greater than a set multiple of the stabilization temperature change time. .

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