KR20080065141A - Refrigerator refriging indepentently - Google Patents

Abstract

A separate cooling type refrigerator is provided to realize fast cooling by cooling both freezing and refrigerating compartments simultaneously. A separate cooling type refrigerator includes temperature sensors(12,14,16,18,20,22) for sensing the temperature of freezing and refrigerating compartments, and a controller(30) comparing the sensed temperature with set temperatures for the compartments respectively so as to form refrigerant paths for first and second evaporators by controlling a 3-way valve(500) when simultaneous cooling for the both compartments.

Description

Independent Cooling Refrigerator {REFRIGERATOR REFRIGING INDEPENTENTLY}

1 is an embodiment of an independent cooling refrigerator according to the present invention.

2 is a configuration diagram of a cooling cycle of the independent cooling refrigerator of FIG. 1.

3 is a block diagram of an independent cooling refrigerator according to the present invention.

4 is a flowchart illustrating a control method of an independent cooling refrigerator according to the present invention.

<Explanation of symbols for the main parts of the drawings>

12: fridge temperature sensor 14: freezer temperature sensor

24: fan drive unit 26: valve drive unit

30: control unit

The present invention relates to an independent refrigeration refrigerator, and more particularly, to an independent refrigeration refrigerator to perform rapid cooling of the freezer compartment and the refrigerating compartment to achieve rapid cooling.

In general, a refrigerator uses a principle of a refrigeration cycle that absorbs ambient heat as the compressed and cooled refrigerant expands to lower the ambient temperature at which the refrigerant expands and evaporates. And condenser, evaporator and accumulator.

In addition, the refrigerator is provided with a plurality of box-shaped storage compartment with its front open to accommodate food, and the front opening of the storage compartment is formed such that one end thereof is opened / closed by a door coupled to the front opening via a hinge. Is common.

In addition, it is common for each of the storage compartments to cool the air in each of the storage compartments so that the evaporators are installed to deprive the heat of the ambient air.

Republic of Korea Utility Model Publication No. 0148118 has a freezer compartment and a refrigerating compartment arranged up and down, the evaporator for supplying cold air to the freezer compartment, the cold air supply passage structure is formed to be supplied to the freezer compartment supplied to the freezer compartment through the evaporator to distribute the cold air to the refrigerating compartment An example of is disclosed.

In addition, the Republic of Korea Patent Publication No. 0182726 has a refrigerator compartment and a freezer compartment arranged up and down, a refrigerator compartment evaporator for generating cold air to supply cold air to the refrigerator compartment, a freezer compartment evaporator for generating cold air to supply cold air to the freezer compartment, a refrigerator compartment An example of the structure of the refrigerator compartment flow path which supplies cold air from an evaporator to a refrigerator compartment, and the freezer compartment flow path which supplies cold air to a freezer compartment from a freezer compartment evaporator is disclosed. That is, a common independent cooling refrigerator is provided with one condenser and a compressor, two evaporators, and two refrigerators to independently cool the refrigerator compartment and the freezer compartment.

In the independent cooling refrigerator, when the cooling of the refrigerating compartment is required, cooling by the evaporator of the refrigerating compartment may be performed, and when the cooling of the freezing compartment is required, the cooling by the evaporator of the freezing compartment may be performed. However, the conventional independent refrigeration refrigerator does not provide a configuration of how to achieve rapid cooling when cooling is required at the same time in the refrigerating compartment and the freezing compartment.

In order to solve this problem, an object of the present invention is to provide an independent cooling refrigerator and a control method according to the same to perform simultaneous cooling for the freezer compartment and the refrigerating compartment.

In addition, an object of the present invention is to provide an independent cooling refrigerator and a control method according to the simultaneous cooling and cooling alone to achieve a rapid cooling of the freezer compartment and the refrigerating compartment.

In addition, an object of the present invention is to provide an independent cooling refrigerator and a control method according to which the cooling is performed by performing the valve control and the fan control at the same time.

The compressor of the present invention, a condenser for condensing the refrigerant from the compressor, a three-way valve for supplying the refrigerant from the condenser to the first and second evaporators, and cooling the freezing space and the refrigerating space by evaporating the supplied refrigerant. In the independent refrigeration refrigerator having a first and a second evaporator and a first and a second cooling fan for circulating the cold air by the first evaporator and the second evaporator, respectively, The three-way valve is compared with the temperature sensors for sensing a temperature, the sensed temperatures, and the set temperatures of the freezing space and the refrigerating space, respectively, when cooling of the freezing space and the refrigerating space is simultaneously required. And controlling means for forming a flow path of the refrigerant by the first evaporator and the second evaporator.

In this case, it is preferable that the control means simultaneously form a flow path of the refrigerant for a predetermined time.

In addition, the control means may determine the degree of change of the sensed temperature to selectively form the flow path of the refrigerant to the first evaporator or the second evaporator corresponding to the space of the smaller change degree.

In addition, the control means preferably performs the selective formation of the refrigerant passage for a predetermined time.

The control means preferably drives the first cooling fan and the second cooling fan respectively corresponding to the first evaporator and the second evaporator in which the flow path of the refrigerant is formed.

In addition, the control method of the independent refrigeration refrigerator having the first and second evaporators for cooling the freezing space and the refrigerating space of the present invention, the control method comprises the steps of sensing the temperature of the freezing space and the refrigerating space, respectively; Comparing the sensed temperatures with set temperatures of the freezing space and the refrigerating space, and when the cooling of the freezing space and the refrigerating space is required according to the comparison result, the first evaporator and the second Simultaneously forming a refrigerant passage in the evaporator.

Hereinafter, the present invention is not limited to the above-described specific preferred embodiments, and any person having ordinary skill in the art without departing from the gist of the present invention claimed in the claims may make various modifications. Of course, such changes are within the scope of the claims.

In this embodiment, a refrigerator-freezer and a freezer compartment are described as an example of a double door refrigerator, but the present invention can be applied to a refrigerator in which a refrigerator compartment and a freezer compartment are arranged up and down.

1 is an embodiment of an independent cooling refrigerator according to the present invention. The independent cooling refrigerator includes an outer case 100, an inner case 200, a door 300, and a refrigerating cycle 400.

The outer case 100 forms the outside of the independent cooling refrigerator. The inner case 200 is formed inside the outer case 100 and defines a refrigerating chamber R and a freezing chamber F. In this embodiment, the inner case 200 is formed inside the outer case 100 such that a refrigerating chamber R is defined at the inner right side of the outer case 100 and a freezing chamber F at the left side thereof.

The door 300 opens or closes the refrigerating compartment R or the freezing compartment F defined by the inner case 200. In this embodiment, the door 300 opens and closes the refrigerating compartment R of the outer case 100. The refrigerator compartment door 310 installed at the right side and the refrigerator compartment door 310 installed at the left side of the outer case 100 to open and close the freezer compartment F are provided. In addition, the freezer compartment door 320 is a dispenser (not shown) for taking out water or ice from the outside of the independent cooling refrigerator, and the refrigerating compartment door 310 is a food or beverage stored in the refrigerating compartment (R) outside the independent cooling refrigerator. A home bar (not shown) can be provided.

The refrigeration cycle 400 is installed between the outer case 100 and the inner case 200 to supply cold air to the refrigerating chamber (R) and the freezing chamber (F). The refrigeration cycle 400 also includes a compressor 420, a condenser 440, expansion means 460, and an evaporator 480. The compressor 420 compresses the refrigerant to high temperature and high pressure, the condenser 440 condenses the refrigerant compressed in the compressor 420, the expansion means 460 decompresses the refrigerant condensed in the condenser 440, and the evaporator ( 480 evaporates the refrigerant passing through the expansion means 460 to form cold air around the evaporator 480. The refrigerating chamber R and the freezing chamber F are cooled by cold air formed around the evaporator 480.

In the present embodiment, the evaporator 480 includes a first evaporator 482 and a second evaporator 484. The first evaporator 482 supplies cold air to the refrigerating chamber R, and the second evaporator 484 supplies cold air to the freezing chamber F. Accordingly, the cold air is supplied to each of the freezing chamber F and the refrigerating chamber R independently. In addition, in this embodiment, the expansion means 460 includes a first expansion means 462 installed on the first evaporator 482 side, and a second expansion means 464 installed on the second evaporator 484 side. . In this embodiment, the first expansion means 462 and the second expansion means 464 are made of a capillary tube.

In the present embodiment, a three-way valve 500 is further provided to supply the refrigerant condensed while passing through the condenser 440 to each of the first evaporator 482 and the second evaporator 484. Is installed between the condenser 440 and the first and second expansion means 464 to supply a portion of the refrigerant condensed while passing through the condenser 440 to the first expansion means 462 and the first evaporator 482. The remaining condensed refrigerant passing through the condenser 440 is supplied to the second expansion means 464 and the second evaporator 484. At this time, the three-way valve 500 supplies a refrigerant to at least one of the first evaporator 482 and the second evaporator 484, or the refrigerant supplied to adjust the cold air supplied to the refrigerating chamber (R) and the freezing chamber (F). Can be blocked.

The independent cooling refrigerator supplies the first blowing fan 620 for supplying the cold air generated in the first evaporator 482 to the refrigerating chamber R, and the cold air generated in the second evaporator 484 to the freezing chamber F. A second blowing fan 640 is provided. In the present exemplary embodiment, the first blowing fan 620 is installed in the inner case 200 that defines the refrigerating chamber R to blow cold air generated by the first evaporator 482 into the refrigerating chamber R, and the second blowing fan. 640 is installed in the inner case 200 defining the freezer compartment F to blow cold air generated by the second evaporator 484 into the freezer compartment F.

Cold air is supplied to the refrigerating chamber (R) and the freezing chamber (F) through the refrigerating cycle (400) having such a configuration, the cold air supplied to the refrigerating chamber (R) and the freezing chamber (F) by the refrigerant compressed in the compressor (420) The cooling power may be adjusted, and the cooling amount may be adjusted by the first blowing fan 620 or the second blowing fan 640.

2 is a configuration diagram of a cooling cycle of the independent cooling refrigerator of FIG. 1. As shown in FIG. 2, the cooling cycle 400 includes a compressor 420 for compressing a refrigerant, a condenser 440 for condensing the compressed refrigerant, and a condensation fan 660 for dissipating the condenser 440. ), And the condensed refrigerant to the first evaporator (consisting of the first evaporator 482, expansion means 462) and the second evaporator (second evaporator 484, expansion means 464, accumulator And a three-way valve 500 for forming and blocking a flow path to the 700 and a check valve 720, a first evaporator part, and a second evaporator part.

The refrigeration cycle 400 includes a refrigerant passage through the first evaporator and a refrigerant passage through the second evaporator. The refrigerator compartment R is cooled by the refrigerant passage through the first evaporator, and the freezer compartment F is cooled by the refrigerant passage through the second evaporator. Means for selecting one of the two refrigerant passages, or selecting all or blocking all are made by the three-way valve (500). The three-way valve 500 forms or closes a refrigerant passage under the control of the controller 30 shown in FIG. 3.

3 is a block diagram of an independent cooling refrigerator according to the present invention. As shown in FIG. 3, the control device 10 of the independent cooling refrigerator includes a refrigerating compartment temperature sensor 12 detecting a temperature of the refrigerating compartment R, and a freezing compartment temperature sensor 14 detecting a temperature of the freezing compartment F. And a refrigerator compartment defrost sensor 16 for generating a defrost signal for the first evaporator 482 for cooling the refrigerator compartment R, and a refrigerator compartment defrost heater 18 for performing defrost for the first evaporator 482. And a freezer compartment defrost sensor 20 generating a defrost signal for the second evaporator 484 that cools the freezer compartment F, and a freezer compartment defrost heater 22 that performs defrost for the second evaporator 484. A fan driving unit 24 for driving the operation of the refrigerating chamber blowing fan 620, the freezing chamber blowing fan 640, and the condensation fan 660, a valve driving unit 26 for driving the three-way valve 500, Compressor drive 28, which drives the compression / expansion stroke for compressor 420, and the components described above to control refrigeration chamber (R) and freezer (F). It consists of a control unit 30 to achieve a cooling. However, in FIG. 3, a power supply unit for supplying power to each component is not shown. However, the description of the power supply unit is omitted because it is clearly recognized by those skilled in the art.

The refrigerating compartment temperature sensor 12 and the freezing compartment temperature sensor 14 are mounted on the side walls of the refrigerating compartment R and the freezing compartment F, respectively, to detect the internal temperatures Tr and Tf of the refrigerating compartment R and the freezing compartment F, respectively. Then, the sensed temperature is applied to the controller 30. Temperature detection by the refrigerating compartment temperature sensor 12 and the freezer compartment temperature sensor 14 may be performed according to a detection command from the controller 30 or may be independently performed without receiving the detection command.

The refrigerating compartment defrost sensor 16 and the freezing compartment defrost sensor 20 are sensors that change their resistance in response to the temperatures of the first evaporator 482 and the second evaporator 484. Since the first evaporator 482 and the second evaporator 484 cool by the evaporative heat taken from the surroundings when the refrigerant evaporates, the first evaporator 482 and the second evaporator are cooled by the moisture around them. Is caught in (484). Accordingly, the controller 30 may use different current values when the defrost signal corresponding to the resistance value according to the temperature of the first evaporator 482 and the second evaporator 484 is applied to the same voltage. Is detected and the same current is applied, so that different voltage values are detected) from the refrigerator compartment defrost sensor 16 and the freezer compartment defrost sensor 20.

The refrigerating compartment defrost heater 18 and the freezer compartment defrost heater 22 are respectively heated in the first evaporator 482 and the second evaporator 484 according to an operation signal (for example, a HIGH signal) from the control unit 30. Means to supply. This heat supply removes frost and the like generated by freezing moisture around the first evaporator 482 and the second evaporator 484.

The fan driver 24 is a means for driving the refrigerating compartment blowing fan 620, the freezing compartment blowing fan 640, and the condensing fan 660 according to a driving command from the control unit 30. It may be made of, or may be provided in plurality in correspondence with each blowing fan (620, 640) and the condensation fan (660).

The valve driver 26 controls the opening and closing of the three-way valve 500, but controls the formation of the refrigerant flow path to the first evaporator portion, the formation of the refrigerant flow path to the second evaporator portion, and the blocking of the three-way valve 500 from the control unit 30. Execute according to the driving command of.

The compressor driver 28 drives the compressor 420. For example, when the compressor 420 is a linear compressor, the generation of the PWM signal for the application of the driving voltage, the application of the PWM signal, and the like are performed according to the command of the controller 30. Perform.

The control unit 30 receives a refrigerator compartment temperature sensor 12, a refrigerator compartment detection temperature Tr, which is a detection temperature from the freezer compartment temperature sensor 14, and a freezer compartment detection temperature Tf, by default. The necessity of cooling of the refrigerator compartment R and the freezer compartment F is determined by comparing the set temperature Trr and the freezer compartment sensing temperature Tfr, respectively. In accordance with the determination of the cooling, the control unit 30 applies a driving command to the valve driving unit 26 to form and block the refrigerant flow path to the first evaporator unit and / or the second evaporator unit. When the refrigerant flow path is formed and blocked, the controller 30 performs driving / blocking of the compressor 420 so that the refrigerant flow path is efficiently formed and blocked.

In particular, when the controller 30 forms the refrigerant passage to the first evaporator section after forming the refrigerant passage to the second evaporator section, the second evaporator 484 of the second evaporator section, the accumulator 700, and the like. Since the refrigerant remains inside, it is necessary to transfer all of the refrigerant to the compressor 420 and the condenser 440. Therefore, the control unit 30 causes the three-way valve 500 to block both the first evaporator unit and the second evaporator unit, and operates the compressor 420 to supply the refrigerant remaining in the second evaporator unit to the compressor 420 or the like. Perform the pump down operation, which is the operation to transfer to the motor. Thus, the controller 30 controls the three-way valve 500 to transfer the refrigerant remaining in the second evaporator to the compressor 420 and the like so that a refrigerant flow path to the first evaporator is formed. Allow cooling to the refrigerating chamber (R).

In addition, the control unit 30 corresponds to the formation and blocking of the refrigerant flow path to the first evaporator unit and / or the second evaporator unit, so that the first blowing fan 620, the second blowing fan 640, and the condensation fan 660 are formed. The driving command is applied to the fan driving unit 24 to drive the fan, so that the cooling of the refrigerator compartment R and the freezer compartment F is performed quickly.

In addition, the controller 30 is applied to the defrost signal detected by the refrigerator compartment defrost sensor 16 and the freezer compartment defrost sensor 20, and compares the previously stored defrost conditions (for example, a reference voltage value and a current value). When the defrost condition is satisfied, an operation signal is applied to the refrigerating compartment defrost heater 18 and / or the freezer compartment defrost heater 22 so that defrosting of the corresponding evaporator is performed, and thus the first evaporator 482 and / or defrosting is performed. Allow defrost for the evaporator 484 to be performed.

4 is a flowchart illustrating a control method of an independent cooling refrigerator according to the present invention. The flowchart starts on the premise that the refrigerating compartment detection temperature Tr, the freezer compartment detection temperature Tf are respectively higher than the pre-stored refrigerating compartment set temperature Trr and the freezer compartment set temperature Tfr. In addition, the control unit 30 also assumes a process of receiving the refrigerating compartment detection temperature Tr and the freezing compartment detection temperature Tf from the refrigerating compartment temperature sensor 12 and the freezing compartment temperature sensor 14. The reception of the refrigerating compartment detection temperature Tr and the freezer compartment detection temperature Tf of the control unit 30 is not limited to a specific step, but at all steps at predetermined time intervals (for example, 5 seconds, 10 seconds, etc.). It should be understood that the work is carried out over

In step S51, since the control unit 30 requires simultaneous cooling of the refrigerating chamber R and the freezing chamber F, the control unit 30 simultaneously performs cooling of the refrigerating chamber R and the freezing chamber F. That is, the controller 30 applies a driving command to the valve driving unit 26 to simultaneously form a refrigerant flow path to the first evaporator unit and the second evaporator unit. Thus, the valve driving unit 26 is a three-way valve 500. The refrigerant is introduced into the first evaporator unit and the second evaporator unit at the same time. In addition, the control unit 30 is a refrigerator driving fan 620 and the freezer compartment blowing fan 640 provided in the first evaporator and the second evaporator formed with a refrigerant flow path, the control unit 30 is a fan driver 24 Grant the drive command with). In the formation of each refrigerant passage, the controller 30 also controls the driving of the condensation fan 660 together.

In step S52, the controller 30 allows simultaneous cooling of the refrigerating chamber R and the freezing chamber F by step S51 during the set time T1.

In step S53, the control unit 30 detects the sensing temperatures Tr and Tf from the refrigerating compartment temperature sensor 12 and the freezer compartment temperature sensor 14 while performing simultaneous cooling by steps S51 and S52. Receive each continuously. The control unit 30 calculates these degrees of change ΔTr and ΔTf of the received sensing temperatures Tr, Tf with respect to the set time T1, respectively.

In step S54, the control unit 30 compares the degree of change ΔTr and ΔTf calculated in step S53 with each other, and proceeds to step S55 when ΔTf is larger than ΔTr. When the process proceeds to step S55, since the cooling rate for the freezing compartment F is greater than the cooling rate for the refrigerating compartment R, cooling of the refrigerating compartment R is further required. If DELTA Tf is less than or equal to DELTA Tr, step S57 is reached.

In step S55, the controller 30 performs independent cooling of the refrigerating chamber R, instead of the simultaneous cooling of the refrigerating chamber R and the freezing chamber F, which have been previously performed. That is, since complementary cooling of the refrigerating chamber R is required, the controller 30 controls the valve driver 26 so that the refrigerant passage is formed only for the first evaporator. The controller 30 applies a driving command to the valve driving unit 26 to form a refrigerant flow path to the first evaporator unit, and the valve driving unit 26 opens the three-way valve 500 to the first evaporator unit. Block the second evaporator. In addition, the controller 30 applies a driving command to the refrigerating compartment blowing fan 620 to the fan driving unit 24, and the fan driving unit 24 drives the refrigerating compartment blowing fan 620.

In step S56, the control unit 30 causes the formation of the coolant flow path to the first evaporator unit in step S55 for a predetermined time T2, and proceeds to step S60.

In step S57, the controller 30 compares ΔTf with ΔTr and proceeds to step S58 if ΔTf is less than ΔTr. Proceeding to step S58, since the cooling rate of the refrigerating compartment R is faster than the cooling rate of the freezing compartment F, additional and complementary single cooling to the freezing compartment F is achieved. If ΔTf and ΔTr are the same, the controller 30 proceeds to step S60.

In step S58, the controller 30 performs independent cooling of the freezing compartment F instead of simultaneous cooling of the refrigerating compartment R and the freezing compartment F which have been performed before. That is, the controller 30 controls the valve driver 26 so that the refrigerant passage is formed only for the second evaporator. The controller 30 applies a driving command to the valve driving unit 26 to form a refrigerant flow path to the second evaporator unit, and the valve driving unit 26 opens the three-way valve 500 to the second evaporator unit. Block the first evaporator. In addition, the controller 30 applies a driving command to the freezer compartment blower fan 640 to the fan driver 24, and the fan driver 24 drives the freezer compartment blower fan 640.

In step S59, the controller 30 causes the formation of the coolant flow path to the second evaporator unit in step S58 to be performed for the set time T3, and the flow proceeds to step S60.

In step S60, the controller 30 compares the freezer compartment sensing temperature Tf and the freezer compartment set temperature Tfr, and if the freezer compartment sensing temperature Tf is higher than the freezer compartment set temperature Tfr, Since cooling is required, the flow proceeds to step S61. If the freezer compartment sensing temperature Tf is equal to or lower than the freezer compartment set temperature Tfr, cooling to the freezer compartment F is unnecessary and the flow proceeds to step S63.

In step S61, the controller 30 compares the refrigerating compartment detection temperature Tr and the refrigerating compartment set temperature Trr, and if the refrigerating compartment detection temperature Tr is higher than the refrigerating compartment set temperature Trr, Since cooling is also required, that is, simultaneous cooling is required, the flow proceeds to step S51. If the refrigerating compartment detection temperature Tr is equal to or lower than the refrigerating compartment set temperature Trr, cooling to the refrigerating compartment R is unnecessary, and since only cooling to the freezing compartment F is required, the flow proceeds to step S62.

In step S62, the controller 30 performs independent cooling of the freezing chamber F instead of simultaneous cooling or single cooling of the refrigerating chamber R and the freezing chamber F which have been performed before. That is, since the refrigerating chamber sensing temperature Tr satisfies the refrigerating chamber set temperature Trr, the controller 30 controls the valve driving unit 26 so that the refrigerant flow path is formed only for the second evaporator unit. The controller 30 applies a driving command to the valve driving unit 26 to form a refrigerant flow path to the second evaporator unit, and the valve driving unit 26 opens the three-way valve 500 to the second evaporator unit. Block the first evaporator. In addition, the controller 30 applies a driving command to the freezer compartment blower fan 640 to the fan driver 24, and the fan driver 24 drives the freezer compartment blower fan 640. The controller 30 allows the cooling by the step S62 to be performed until the freezer compartment sensing temperature Tf is equal to or lower than the freezer compartment set temperature Tfr.

In step S63, the controller 30 compares the refrigerating compartment detection temperature Tr and the refrigerating compartment set temperature Trr, and if the refrigerating compartment detection temperature Tr is higher than the refrigerating compartment set temperature Trr, Since cooling is required, the flow proceeds to step S64. If the refrigerating compartment detection temperature (Tr) is equal to or lower than the refrigerating compartment set temperature (Trr), the cooling to the refrigerating compartment (R) is also unnecessary and ends.

In step S64, the controller 30 performs cooling only for the refrigerating chamber R, instead of simultaneous cooling for the refrigerating chamber R and the freezing chamber F, which have been previously performed. That is, since the freezer compartment sensing temperature Tf satisfies the freezer compartment set temperature Tfr, the controller 30 controls the valve driving unit 26 so that the refrigerant passage is formed only for the first evaporator unit. The controller 30 applies a driving command to the valve driving unit 26 to form a refrigerant flow path to the first evaporator unit, and the valve driving unit 26 opens the three-way valve 500 to the first evaporator unit. Block the second evaporator. In addition, the controller 30 applies a driving command to the refrigerating compartment blowing fan 620 to the fan driving unit 24, and the fan driving unit 24 drives the refrigerating compartment blowing fan 620. The controller 30 allows the cooling by the step S64 to be performed until the refrigerator compartment sensing temperature Tr is equal to or lower than the refrigerator compartment set temperature Trr.

The above-described steps S51 to S59, S60, and S61 are performed when cooling for both the refrigerating chamber R and the freezing chamber F is required, and the steps S60, S63, and S64 are performed simultaneously with simultaneous cooling or alone. If cooling to the freezer compartment F is unnecessary by cooling, cooling is performed only for one refrigerator compartment R, and steps S60, S61, and S62 are performed in the refrigerator compartment R by simultaneous simultaneous cooling or single cooling. If the cooling is not necessary, cooling is performed only for one freezer compartment (F). Among the above-described steps S51 to S59, S60 and S61, steps S51 to S54 are for simultaneous cooling, and steps S54 to S56 are for single cooling to the refrigerating chamber R, and step S54. , S57 to S59 are for single cooling to the freezer compartment F.

In addition, the setting time T1 in the above-described step S52, the setting time T2 in the step S56, and the setting time T3 in the step S59 may all have the same magnitude. , T1> T3> T2, the largest in simultaneous cooling and the second cooling time of the refrigerating compartment may be the second to prevent the objects stored in the freezing compartment F from melting.

The present invention of such a configuration has the effect of performing rapid cooling by performing simultaneous cooling for the freezer compartment and the refrigerating compartment.

In addition, the present invention is to perform the simultaneous cooling to achieve a rapid cooling for the freezer compartment and the refrigerating compartment, but to perform the cooling alone, there is an effect that the overall cooling for the freezer compartment and the refrigerating compartment is made quickly.

In addition, the present invention by the valve control and fan control at the same time to achieve the cooling, there is an effect of achieving the rapidity of the cooling.

Claims (10)

A compressor, a condenser for condensing the refrigerant from the compressor, a three-way valve for supplying the refrigerant from the condenser to the first and second evaporators, and an agent for evaporating the supplied refrigerant to cool the freezing space and the refrigerating space, respectively. In an independent cooling refrigerator having a first and a second evaporator and a first and a second cooling fan for circulating cold air by the first and second evaporators, respectively, the refrigerator comprises: Temperature sensors for sensing temperatures of the freezing space and the refrigerating space, respectively; By comparing the sensed temperatures with the set temperatures of the freezing space and the refrigerating space, respectively, when the cooling of the freezing space and the refrigerating space is required simultaneously, the three-way valve is controlled to control the first evaporator and the second. And a control means for forming a flow path of the refrigerant by an evaporator. The method of claim 1, The control means is an independent cooling refrigerator, characterized in that for simultaneously forming the flow path of the refrigerant. The method of claim 1, And the control means determines the degree of change of the sensed temperatures to selectively form a flow path of the refrigerant to a first evaporator or a second evaporator corresponding to a space having a smaller degree of change. The method of claim 3, And the control means performs the selective formation of the refrigerant passage for a predetermined time. The method according to any one of claims 1 to 4, And the control means drives the first cooling fan and the second cooling fan respectively corresponding to the first evaporator and the second evaporator in which the flow path of the refrigerant is formed. A control method of an independent refrigeration refrigerator having first and second evaporators for cooling a freezing space and a refrigerating space, respectively, wherein the control method comprises: Sensing temperatures of the freezing space and the refrigerating space, respectively; Comparing the sensed temperatures with set temperatures of the freezing and refrigerating spaces; According to the comparison result, if the cooling of the freezing space and the refrigerating space, the control method of the independent refrigeration refrigerator comprising the step of simultaneously forming a refrigerant flow path to the first evaporator and the second evaporator. The method of claim 6, The control method is a control method of an independent cooling refrigerator, characterized in that for performing the forming step for a predetermined time. The method of claim 6, The control method may include determining a degree of change of the sensed temperatures and selectively forming the refrigerant passage in a first evaporator or a second evaporator corresponding to a space having a smaller degree of change according to the determining step. Control method of the independent cooling refrigerator comprising a. The method of claim 6, The control method is a control method of an independent cooling refrigerator, characterized in that the step of selectively forming the refrigerant passage for a predetermined time. The method according to any one of claims 6 to 9, The control method includes controlling a cooling fan corresponding to the first evaporator or the second evaporator in which the refrigerant passage is formed.

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