KR100215063B1 - Refrigerator operating control method - Google Patents

Abstract

The present invention relates to an operation control method of a refrigerator, and checking a temperature difference of a plurality of temperature sensors for a predetermined time, calculating weights for the temperatures of the plurality of temperature sensors according to the checked temperature difference, and By keeping the temperature in the refrigerator at an appropriate temperature according to the temperature, it is possible to prevent the storage in the refrigerator from being damaged.

Description

Operation control method of refrigerator

The present invention relates to an operation control method of a refrigerator, and more particularly, to calculate weights for the temperatures of the plurality of temperature sensors according to the temperature difference of the plurality of temperature sensors checked for a predetermined time, and according to the temperature by the calculated weights. The present invention relates to a method for controlling operation of a refrigerator to maintain a temperature in a refrigerator at an appropriate temperature.

In general, as shown in FIG. 1, the refrigerator includes a freezing chamber 5 and a refrigerating chamber 7 which store foods separated by an intermediate wall member 3 in the upper and lower portions as shown in FIG. 1. The front surface of (1) is equipped with a freezer compartment door 8 for opening and closing the freezer compartment 5 and a refrigerating compartment door 9 for opening and closing the refrigerating compartment 7, respectively.

In addition, the freezer compartment evaporator 10 is mounted on the rear surface of the freezer compartment 5 to exchange heat to the cold air by the latent heat of evaporation of the refrigerant to the cold air, that is, the cold compartment, and an upper side of the freezer compartment evaporator 10. The freezer compartment fan 13 which rotates in accordance with the drive of the freezer compartment fan motor 11 which circulates the cold air heat-exchanged by the 10 to the said freezer compartment 5 is attached.

In addition, a first duct on the left side of the freezer compartment evaporator 10 which guides the flow of cold air to circulate the cold air heat exchanged by the freezer compartment evaporator 10 into the freezer compartment 5 by the rotational force of the freezer compartment fan 13. The member 15 is mounted and heat exchanged by the freezer compartment evaporator 10 on the rear wall of the freezer compartment 5 to discharge cold air guided along the first duct member 15 into the freezer compartment 5. The first cold air discharge port 17 is formed.

And, one side of the freezer compartment evaporator (10) is equipped with a freezer compartment evaporator temperature sensor 42 for sensing the temperature of the freezer compartment evaporator (10), while the air blown by the freezer compartment fan (13) 10) is equipped with a freezer compartment heater 19 which generates heat so that dew (frost) formed on the freezer compartment evaporator 10 is removed by cold air discharged to the outside when it is cooled by heat exchange by the latent heat of evaporation of the refrigerant. have.

In addition, the lower side of the freezer compartment evaporator 10 is provided with water in the air generated when cooling the air blown by the freezer compartment evaporator 10 in accordance with the operation of the freezer compartment 13, that is, defrost water. The first evaporation receiver 23 is installed to collect the water and drain it to the evaporating dish 21 installed at the lower end of the main body 1 through the drain hose 20. The lower part is equipped with a first freezer compartment temperature sensor 55 and a second freezer compartment temperature sensor 56 for sensing the temperature in the freezer compartment 5.

The refrigerator compartment evaporator 27 is mounted on a rear surface of the refrigerator compartment 7 so as to heat the blown air with cold air, that is, cold air by the latent heat of evaporation of the refrigerant, and an upper side of the refrigerator compartment evaporator 27. The refrigerator compartment fan 30 which rotates in accordance with the drive of the refrigerator compartment fan motor 29 so that the cold air heat-exchanged by 27 is circulated to the refrigerator compartment 7 is attached.

In addition, on the left side of the refrigerating chamber evaporator 27, a second duct for guiding the flow of cold air to circulate the cold air heat exchanged by the refrigerating chamber evaporator 27 into the refrigerating chamber 7 by the rotational force of the refrigerating chamber fan 30. The member 31 is mounted and heat exchanged by the refrigerating chamber evaporator 27 to the rear wall of the refrigerating chamber 7 so that the cold air guided along the second duct member 31 is discharged into the refrigerating chamber 7. The second cold air discharge port 33 is formed.

In addition, one side of the refrigerator compartment evaporator (27) is equipped with a refrigerator compartment evaporator temperature sensor (44) for detecting the temperature of the refrigerator compartment evaporator (27), and the air blown by the refrigerator compartment fan (30). In (27), the refrigerator compartment heater 35 is configured to generate heat such that dew (frost) formed on the refrigerator compartment evaporator 27 is removed by cold air discharged to the outside when cooling by heat exchange by the latent heat of evaporation of the refrigerant. It is.

In addition, the lower side of the refrigerating chamber evaporator 27 provides moisture in the air generated when the air blown in accordance with the operation of the refrigerating chamber fan 30 in the refrigerating chamber evaporator 27 is cooled, that is, defrost water. The second evaporation tray 37 is installed to collect the water and drain it to the evaporating dish 21 installed at the lower end of the main body 1 through the drain hose 20. The upper and lower rear sides of the refrigerating chamber 7 are installed. The first refrigerating compartment temperature sensor 58 and the second refrigerating compartment temperature sensor 59 for detecting the temperature in the refrigerating compartment 7 are mounted on the second refrigerator compartment temperature sensor 59.

In addition, the lower end of the main body 1 is equipped with a compressor 40 for compressing the low temperature low pressure gas refrigerant cooled in the freezer compartment evaporator 10 and the refrigerating chamber evaporator 27 to a high temperature and high pressure gas state. On the rear side of (1), the main condenser 41 which heat-exchanges the high-temperature, high-pressure gas refrigerant compressed by the compressor 40 by natural convection or forced convection with external air, forcibly cools the liquid refrigerant with low-temperature and high pressure, and liquefies it. ) Is installed.

In addition, an auxiliary condenser 43 for evaporating the defrost water collected in the evaporation plate 21 is mounted at the lower end of the evaporation plate 21, and an inner space is provided in the freezer compartment 5 and the refrigerating compartment 7. A plurality of shelf members 45 are mounted to support the stored food by dividing into pieces.

In the conventional refrigerator configured as described above, when the temperatures of the freezer compartment 5 and the refrigerating compartment 7 are set by the user, and power is supplied to the refrigerator, the first freezer compartment temperature sensor 55 and the second freezer compartment temperature sensor 58 are provided. ) Detects the temperature of the freezer compartment 5 and outputs a corresponding detection signal to the control means (not shown).

Next, the control means receives the detection signal and calculates the temperature of the freezer compartment 5 according to the weights of the temperatures of the first freezer compartment temperature sensor 55 and the second freezer compartment temperature sensor 56 which are preset. When the temperature of the freezer compartment 5 is higher than the temperature of the freezer compartment 5 set by the user, the compressor 40 is driven.

Then, as the compressor 40 is driven, the refrigerant compressed with the gas of high temperature and high pressure passes through the auxiliary condenser 43, and evaporates the defrost water collected in the evaporation plate 21, and the auxiliary condenser 43 After passing through the main condenser 41, the refrigerant is heat-exchanged by natural convection or forced convection with external air, cooled by a low-temperature low-pressure refrigerant, and liquefied.

Next, the low-temperature low-pressure liquid refrigerant liquefied in the main condenser 41 is decompressed to a low-temperature low-pressure free refrigerant which is easy to evaporate while passing through a capillary tube that expands to the evaporation pressure to the freezer evaporator 10 and the refrigerating chamber evaporator 27. Inflow.

Then, the freezer of the low temperature low pressure freeze pressure reduced in the freezer compartment evaporator 10 and the refrigerator compartment evaporator 27 evaporates while passing through several pipes to cool the air in the freezer compartment 5 and the refrigerator compartment 7 (cold air). The low temperature and low pressure gas refrigerant cooled in the freezer compartment evaporator 10 and the refrigerator compartment evaporator 27 repeats the freezing cycle which is sucked into the compressor 40 again.

On the other hand, the control means receives a detection signal from the first refrigerator compartment temperature sensor 58 and the second refrigerator compartment temperature sensor 59 to the temperature of the first first refrigerator compartment temperature sensor 58 and the second freezer compartment temperature sensor 56. The temperature of the refrigerating chamber 7 is calculated according to the weighted value of the refrigerator, and the refrigerating chamber fan motor 29 is driven when the calculated temperature of the refrigerating chamber 7 is equal to or higher than the temperature of the refrigerating chamber 7 set by the user.

Next, as the refrigerating chamber fan motor 29 is driven, the refrigerating chamber fan 30 rotates to repeat the freezing cycle as described above, and the cold air heat-exchanged by the refrigerating chamber evaporator 27 opens the second duct member 31. Guided along and discharged into the refrigerating chamber 7 through the second cold air outlet 33, the inside of the refrigerating chamber 7 is cooled by the cold air discharged through the second cold air discharge port 33.

Then, the control means stops the refrigerator compartment fan motor 29 when the temperature of the refrigerator compartment 7 is lower than the temperature of the refrigerator compartment 7 set by the user, and the refrigerator compartment fan motor 29 is stopped as the refrigerator compartment fan motor 29 is stopped. 30 does not rotate, and cooling in the refrigerating chamber 7 is stopped.

On the other hand, if the temperature of the refrigerating chamber 7 is not higher than the temperature of the refrigerating chamber 7 set by the user, the control means drives the freezer compartment motor 11 and the freezer compartment motor 11 is driven as a freezer compartment fan ( 13) is rotated to repeat the freezing cycle as described above, the cold air heat exchanged by the freezer compartment evaporator 10 is guided along the first duct member 15 and into the freezer compartment 5 through the first cold air outlet 17. The inside of the freezing chamber 5 is cooled by the cold air discharged and discharged through the first cold air discharge port 17.

Next, the control means stops the compressor 40 and the freezer compartment fan motor 11 when the temperature of the freezer compartment 5 is less than or equal to the temperature of the freezer compartment 5 set by the user, and the compressor 40 and the freezer compartment fan motor are stopped. As (11) is stopped, the cooling operation of the refrigerator is stopped.

Meanwhile, the refrigerator according to the related art checks the temperature change of the temperature sensors according to the amount of cold air discharged from the cold air discharge port by a test and weights (for example, a weight of the temperature sensor mounted at a position where the temperature change is small). (6) is a large weight, the weight (for example, 4) for the temperature of the temperature sensor mounted at a location with a large change in temperature is small, the weight for the temperature of the temperature sensor is set in advance so that the accurate temperature of the refrigerator is calculated. .

However, if the temperature change of the temperature sensors is changed by the storage stored in the refrigerator (for example, when the storage is stored near the temperature sensor, making it difficult to sense the temperature), the refrigerator may not calculate the exact temperature of the refrigerator and the refrigerator is at the proper temperature. By not maintaining, there was a problem that the storage in the refrigerator is damaged.

Accordingly, the present invention has been made to solve the above problems, calculates the weight for the temperature of the plurality of temperature sensors in accordance with the temperature difference of the plurality of temperature sensors checked for a predetermined time, the temperature by the calculated weight Accordingly, an object of the present invention is to provide an operation control method of a refrigerator which can maintain the temperature in the refrigerator at an appropriate temperature to prevent the storage of the refrigerator from being damaged.

In order to achieve the above object, the operation control method of the refrigerator according to the present invention is a refrigerator provided with a first temperature sensor and a second temperature sensor for sensing a temperature in a freezing compartment and a refrigerating compartment, respectively, wherein the first temperature sensor and the first 2, if the temperature detected by the temperature sensor is equal to or greater than the preset temperature, a driving step of driving the compressor and the fan, a weight calculation step of calculating a weight of the temperature detected by the first temperature sensor and the second temperature sensor, and the weight calculation A refrigerator compartment operation step of operating the refrigerating compartment according to the temperature of the refrigerating compartment by the weight calculated in the step, and a freezer compartment operation step of operating the freezer compartment according to the temperature of the freezing compartment by the weight calculated in the weight calculation step.

1 is a side cross-sectional view of a typical refrigerator,

2 is a schematic block diagram of a refrigerator performing an operation control method of a refrigerator according to the present invention;

3 is a flowchart illustrating an operation control method of a refrigerator according to the present invention;

4A to 4C are flowcharts showing weight calculation steps of the operation control method of the refrigerator according to the present invention;

Explanation of symbols for main parts of the drawings

55: first freezer temperature sensor 56: second freezer temperature sensor

58: first refrigerator compartment temperature sensor 59: second refrigerator compartment temperature sensor

60: control means 71: compressor driving means

73: freezer compartment fan motor drive unit 74: refrigerator compartment fan motor drive unit

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

2 is a schematic block diagram of a refrigerator performing a method for controlling operation of a refrigerator according to the present invention. As can be seen from the drawings, the refrigerator for performing the operation control method of the refrigerator according to the present invention is temperature controlled. Means 50, a temperature sensing means 53, a control means 60, a compressor driving means 71, and a fan motor driving means 72. As shown in FIG.

In Figure 2, the temperature control means 50 is for the user to set the temperature in the freezer compartment and the refrigerator compartment, the freezer compartment temperature control unit 51 for adjusting the temperature in the freezer compartment and the refrigerating compartment for adjusting the temperature in the refrigerator compartment It consists of a temperature control unit (52).

The temperature detecting means 53 detects temperatures in the freezing compartment and the refrigerating compartment and outputs a corresponding detection signal to the control means 60. The freezing compartment temperature sensing unit 54 and the refrigerating compartment sense the temperature in the freezing compartment. It consists of a refrigerator compartment temperature detection unit 57 for sensing the temperature of.

Here, the freezer compartment temperature detection unit 54 is composed of a first freezer compartment temperature sensor 55 and a second freezer compartment temperature sensor 56, and the refrigerating compartment temperature detection unit 57 includes a first refrigerator compartment temperature sensor 58. The second refrigerator compartment temperature sensor (59).

In addition, the control unit 60 receives the detection signal from the temperature sensing unit 53 and calculates the weight of the temperature of the temperature sensors to control the operation of the refrigerator according to the temperature based on the calculated weight. If the temperature of the freezer compartment detected through 54 is equal to or higher than the temperature of the freezer compartment set by the user through the temperature control means 50, the drive control signal for driving the compressor is output to the compressor drive means 71, and the refrigerating compartment temperature is output. When the temperature of the refrigerating compartment sensed by the sensing unit 57 is equal to or higher than the refrigerating compartment temperature set by the user, a driving control signal for driving the refrigerating compartment fan motor is output to the refrigerating compartment fan motor driver 74.

In addition, the control means 60, if the temperature of the refrigerating compartment detected by the refrigerating compartment temperature detecting unit 57 is not higher than the refrigerating compartment temperature set by the user, the control unit for driving the freezer compartment fan motor freezer compartment fan motor driving unit ( 73, and when the temperature of the freezer compartment detected by the freezer compartment temperature detecting unit 54 is equal to or lower than the temperature of the freezer compartment set by the user, the compressor driving means 71 stops the compressor and the freezer compartment fan motor. ) And the freezer fan motor driving unit (73).

The compressor driving means 71 drives the compressor by the drive control signal of the control means 60, and the man motor driving means 72 drives the fan motor by the drive control signal of the control means 60. The refrigerator compartment comprises a freezer compartment fan motor driving unit (73) for driving a freezer compartment fan motor and a refrigerating compartment fan motor driver (74) for driving a refrigerator compartment fan motor.

On the other hand, Figure 3 is a flow chart showing the operation control method of the refrigerator according to the present invention, as can be seen with reference to the same drawing, the operation control method of the refrigerator according to the present invention is a step of the user setting the temperature of the freezer compartment and the refrigerator compartment (S100), the step of determining whether the freezer compartment temperature is above the set temperature (S150), the step of driving the compressor (S200), the step of determining whether the refrigerator compartment temperature is above the set temperature (S250), the step of driving the refrigerator compartment fan (S300), the step of calculating the weight for the temperature of the refrigerator compartment temperature sensor (S350), the step of determining whether the temperature of the refrigerator compartment is lower than the set temperature (S400), the step of stopping the refrigerator compartment fan (S450), the freezer compartment fan Step (S500) for driving, step (S550) for calculating a weight for the temperature of the temperature sensors in the freezer compartment, step (S600) for determining whether the temperature of the freezer compartment is below the set temperature, and step for stopping the compressor and the freezer compartment fan ( S6 50).

An operation control method of the refrigerator according to the present invention configured as described above will be described in detail with reference to FIGS. 1 to 4C.

When the user sets the temperature of the freezer compartment 5 and the freezer compartment 7 through the freezer compartment temperature controller 51 and the refrigerator compartment temperature controller 52 (S100), the first freezer compartment temperature sensor 55 and the second The freezer compartment temperature sensor 56 detects the temperature of the freezer compartment 5 and outputs a corresponding detection signal to the control means 60.

Next, the control means 60 receives the detection signal and calculates the temperature of the freezer compartment 5 according to the weight of the preset temperature of the first freezer compartment temperature sensor 55 and the second freezer compartment temperature sensor 56. Then, it is determined whether the calculated temperature of the freezer compartment 5 is higher than or equal to the temperature of the freezer compartment 5 set by the user (S150).

Next, when it is determined in the step S150 that the temperature of the freezer compartment 5 is not higher than or equal to the set temperature, the control means 60 repeats whether the temperature of the freezer compartment 5 is higher than or equal to the set temperature. On the other hand, if it is determined that the temperature of the freezer compartment 5 is equal to or higher than the set temperature, the drive control signal for driving the compressor 40 is output to the compressor driving means 71.

Next, the compressor driving means 71 drives the compressor 40 according to the drive control signal, and as the compressor 40 is driven, air in the refrigerator is stored in the freezer compartment evaporator 10 and the refrigerator compartment evaporator 27. Heat exchange with cold (S200).

Subsequently, the control means 60 receives the detection signals from the first refrigerator compartment temperature sensor 58 and the second refrigerator compartment temperature sensor 59, and the preset first refrigerator compartment temperature sensor 58 and the second freezer compartment temperature sensor ( The temperature of the refrigerating chamber 7 is calculated according to the weight of the temperature of 68), and it is determined whether the calculated temperature of the refrigerating chamber 7 is equal to or higher than the temperature of the refrigerating chamber 7 set by the user (S250).

Next, when it is determined in the step S250 that the temperature of the refrigerating chamber 7 is equal to or higher than the set temperature, the control means 60 supplies a drive control signal for driving the refrigerating chamber fan motor 29 to the refrigerating chamber fan motor driver. Output to the 74, the refrigerator compartment fan motor drive unit 74 drives the refrigerator compartment fan motor 29 in response to the drive control signal, the refrigerator compartment fan 30 is rotated as the refrigerator compartment fan motor 29 is driven. (S300).

Then, the control means 60 checks the temperature difference for a predetermined time between the first refrigerator compartment temperature sensor 58 and the second refrigerator compartment temperature sensor 59, so that the first refrigerator compartment temperature sensor 58 and the second refrigerator compartment temperature. The weight of the temperature of the sensor 59 is calculated (S350), and it is determined whether the temperature of the refrigerating chamber 7 by the calculated weight is below the set temperature (S400).

Next, when it is determined in the step S400 that it is determined that the temperature is not lower than or equal to the set temperature, the control unit 60 continuously drives the refrigerating chamber fan 30 while calculating the weight to calculate the weight of the refrigerating chamber 7. While repeatedly determining whether the temperature is equal to or lower than the set temperature, when it is determined to be equal to or lower than the set temperature, a stop control signal for stopping the refrigerating compartment fan motor 29 is output to the refrigerating compartment fan motor driver 74.

Then, the refrigerator compartment fan motor driving unit 74 stops the refrigerator compartment fan motor 29 in response to the stop control signal, and the refrigerator compartment fan 30 is stopped as the refrigerator compartment fan motor 29 is stopped to produce a refrigerator compartment ( The cooling operation of 7) is stopped (s450).

On the other hand, if it is determined in step S250 that the temperature of the refrigerating chamber 7 is not higher than or equal to the set temperature, the control means 60 outputs a drive control signal for driving the freezer compartment fan motor 11 to the freezer compartment fan motor. Output to the driving unit 73, the freezer compartment fan motor driving unit 73 drives the freezer compartment fan motor 11 in response to the drive control signal, and the freezer compartment fan 13 is driven as the freezer compartment motor 11 is driven. Rotate (S500).

Next, the control means 60 checks the temperature difference between the first freezing chamber temperature sensor 55 and the second freezing chamber temperature sensor 56 for a predetermined time, and the first freezing chamber temperature sensor 55 and the second freezing chamber temperature sensor. The weight for the temperature of 56 is calculated (S550), and it is determined whether the temperature of the freezer compartment 5 by the calculated weight is less than or equal to the set temperature (S600).

Subsequently, if it is determined that the step S600 is not lower than or equal to the set temperature, the control means 60 continuously drives the freezer compartment fan 13 to calculate the weight and freeze chamber 5 based on the calculated weight. ) Repeatedly determines whether or not the temperature is equal to or lower than the set temperature, and when it is determined to be lower than or equal to the set temperature, the compressor driving means 71 and the freezing compartment provide a stop control signal for stopping the compressor 40 and the freezer compartment fan motor 11. Output to the fan motor driver 73.

Next, the compressor driving means 71 stops the compressor 40 by the stop control signal, and the freezer compartment motor driving unit 73 stops the freezer compartment fan motor 11 by the stop control signal. As the freezing compartment fan motor 11 is stopped, the freezing compartment fan 13 is stopped to stop the overall operation of the refrigerator (S650).

On the other hand, the step (S350) and step (S5S5) for calculating the weight of the temperature sensors, after the control means 60 initializes the time (S700), starts counting the time (S702), the first temperature sensor Check the temperature (C1) and the temperature (C2) of the second temperature sensor (S704).

Next, if it is determined that the counted time has passed a predetermined time (S706), if it is determined that the predetermined time has not passed, the counting time is continued, and the judgment whether the counted time has passed the predetermined time is repeated. If it is determined that the predetermined time has elapsed, the temperature C1 'of the first temperature sensor and the temperature C2' of the second temperature sensor are checked (S708).

Next, a temperature difference C1-C1 '= A of the first temperature sensor and a temperature difference C2-C2' = B of the second temperature sensor for a predetermined time are calculated (S709), and the calculated first temperature sensor If the temperature difference A of the first temperature sensor calculated by determining whether the temperature difference A is greater than or equal to the predetermined temperature T1 (S710) is greater than or equal to the predetermined temperature (° C.1), the temporary temperature with respect to the temperature of the first temperature sensor is determined. While the weight is a reference weight (S712), if the predetermined temperature (T1) or more, the temporary weight for the temperature of the first temperature sensor is a weight plus 1 to the reference weight (S714).

Next, it is determined whether the calculated temperature difference B of the second temperature sensor is equal to or greater than the predetermined temperature T1 (S716), and if the calculated temperature difference B of the second temperature sensor is equal to or greater than the predetermined temperature C1, The temporary weight for the temperature of the second temperature sensor is the reference weight value (S718), while the temporary weight for the temperature of the second temperature sensor is equal to the reference weight value plus 1 if it is not more than the predetermined temperature (T1). (S719).

Next, when the temperature difference (A) of the first temperature sensor is compared with the temperature difference (B) of the second temperature sensor (S720), if the temperature difference (A) of the first temperature sensor is greater than the temperature difference (B) of the second temperature sensor The temperature difference B of the second temperature sensor is determined by the temperature difference A of the first temperature sensor whether the limit temperature difference AB is greater than or equal to the predetermined temperature (° C. 1) (S730).

Next, when it is determined in step S730 that the temperature difference AB is greater than or equal to the predetermined temperature (° C.), the final weight for the temperature of the second temperature sensor is a weight obtained by adding 2 to the temporary weight. If it is determined that the temperature difference AB is not equal to or higher than the predetermined temperature (° C), it is determined whether the temperature difference AB is within the predetermined range (° C to 0 ° C) (S734).

Subsequently, when the determination result of the step S734 determines that the temperature difference AB is within a predetermined range (° C 0 ° C-1 ° C), the final weight for the temperature of the second temperature sensor is 1 to the temporary weight. If it is determined that the temperature difference AB is within a predetermined range (° C. 0 ° C.- ° C.), the weight of the second temperature sensor is a temporary weight (S738). .

Next, the final weight for the temperature of the first temperature sensor is the final weight for the temperature of the first temperature sensor and the second temperature sensor with the final weight for the temperature of the second temperature sensor from 10 to the limiting weight. It calculates (S739).

On the other hand, when the comparison result of the step (S720), if the temperature difference (A) of the first temperature sensor is smaller than the temperature difference (B) of the second temperature sensor, the temperature difference of the first temperature sensor in the temperature difference (B) of the second temperature sensor In step (A), it is determined whether the limit temperature difference BA is greater than or equal to the predetermined temperature T1 (S740).

Next, when it is determined in step S740 that the temperature difference BA is determined to be equal to or greater than a predetermined temperature (° C.), the final weight for the temperature of the first temperature sensor is a weight obtained by adding 2 to the temporary weight. If it is determined in step S742 that the temperature difference BA is not equal to or higher than the predetermined temperature (° C), it is determined whether the temperature difference BA is within a predetermined range (° C-0 ° C) (S744).

Then, when the determination result of the step S744 determines that the temperature difference BA is within a predetermined range (° C to 0 ° C), the final weight for the temperature of the first temperature sensor is 1 to the temporary weight. If it is determined that the temperature difference BA is within a predetermined range (° C. 0 ° C. to 1 ° C.) and suffers from a weight, the final weight for the temperature of the first temperature sensor is a temporary weight (S748). .

Next, the final weight for the temperature of the second temperature sensor is the final weight for the temperature of the first temperature sensor and the second temperature sensor with the final weight for the temperature of the first temperature sensor from 10 to the limiting weight. It calculates (S749).

On the other hand, when the comparison result of the step (S720), if the temperature difference (A) of the first temperature sensor is equal to the temperature difference (B) of the second temperature sensor, the final weight for the temperature of the first temperature sensor and the second temperature sensor is A final weight for the temperature of the first temperature sensor and the second temperature sensor is calculated using the reference weight value (S750).

For example, the initial temperature C1 of the first temperature sensor is 5 ° C, the temperature C2 of the second temperature sensor is 4.5 ° C, and the temperature C1 'of the first temperature sensor after 30 seconds is 2 ° C. When the temperature C2 'of the second temperature sensor is 3 ° C, the reference weight is 5, T0 is 1 ° C, and T1 is 2 ° C, the temperature difference A of the first temperature sensor is 3 ° C (5 ° C-2 ° C). Since the temporal weight is 5 (reference weight), the temperature difference B of the second temperature sensor is 1.5 ° C (4.5 ° C-3 ° C), which is smaller than T1 (2 ° C). The temporary weight is 6 (5 (reference weights) + 1).

Next, the temperature difference A of the first temperature sensor is 3 ° C., which is larger than 1.5 ° C., which is the temperature difference B of the second temperature sensor, and the temperature difference B of the second temperature sensor at the temperature difference A of the first temperature sensor. Since the limit temperature difference (AB) is 1.5 ° C. (3 ° C.-1.5 ° C.), the final weight for the temperature of the second temperature sensor is 7 (6 (temporary weight) +1), and the temperature of the first temperature sensor The final weight is 3 (10-7 (the final weight of the second temperature sensor)).

As described above, the operation control method of the refrigerator according to the present invention calculates the weight of the temperature of the temperature sensors according to the temperature difference of the temperature sensors checked for a predetermined time, and the temperature in the refrigerator according to the temperature by the calculated weight By maintaining the temperature at an appropriate temperature, there is an effect that can prevent the storage in the refrigerator from being damaged.

Claims (4)

A refrigerator provided with a first temperature sensor and a second temperature sensor for sensing a temperature in a freezer compartment and a refrigerating compartment, respectively, wherein the compressor and the fan are driven when the temperature detected by the first temperature sensor and the second temperature sensor is equal to or greater than a preset temperature. A driving step to perform; A weight calculation step of calculating weights for the temperatures sensed by the first and second temperature sensors; A refrigerator compartment operating depth for operating the refrigerator compartment according to the temperature of the refrigerator compartment by the weight calculated in the weight calculation step; And a freezer compartment operating step of operating the freezer compartment in accordance with the temperature of the freezer compartment based on the weight calculated in the weight calculation step. The method of claim 1, wherein the weight calculation step comprises: a temperature calculation step of calculating a temperature difference detected by the first temperature sensor and a temperature difference detected by the second temperature sensor for a predetermined time; A temporary weight calculation step for calculating a temporary weight by comparing each of the temperature difference of the first temperature sensor and the temperature difference of the second temperature sensor calculated by the temperature calculation step with a predetermined temperature or more; And a final weight calculation step for calculating a final weight value for the temperatures of the first temperature sensor and the second temperature sensor according to the temporary weight calculated in the temporary weight value calculation step. The temporary weight calculation step of claim 2, wherein the temporary weighting step for the temperature of the first temperature sensor is a reference weight if the temperature difference of the first temperature sensor is equal to or greater than a predetermined temperature. A temporary weight for the temperature of the sensor is a weight obtained by adding a predetermined value to a reference weight value; If the temperature difference of the second temperature sensor is greater than or equal to the predetermined temperature, the temporary weight for the temperature of the second temperature sensor is the reference weight value, while if it is not more than the predetermined temperature, the temporary weight for the temperature of the second temperature sensor is predetermined for the reference weight value. A method for controlling operation of a refrigerator, comprising a step of adding weights to a value. The method of claim 2, wherein the final weighting step is calculated by calculating a final weight for the temperature of the second temperature sensor if the temperature difference of the first temperature sensor is greater than the temperature difference of the second temperature sensor. Calculating a final weight for the temperature of the first temperature sensor by subtracting a final weight for the temperature of the second temperature sensor; If the temperature difference of the first temperature sensor is smaller than the temperature difference of the second temperature sensor, the final weight for the temperature of the first temperature sensor is calculated, and then the final weight for the temperature of the first temperature sensor calculated from a predetermined value. Calculating a final weight for the temperature of the second temperature sensor by subtracting a; And if the temperature difference of the first temperature sensor is equal to the temperature difference of the second temperature sensor, calculating a reference weight as a final weight of the temperature of the first temperature sensor and the second temperature sensor. Way.

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