KR100189100B1 - Refirgerator manufacturing method having high efficient multi evaporator cycle - Google Patents

Abstract

The present invention discloses a control method of a refrigerator having a compressor, a freezing compartment and a refrigerating compartment, and a first cooler and a refrigerating fan are installed in the refrigerating compartment, and a second cooler and a freezer compartment fan are installed in the freezer compartment. First, in order to determine whether the outside air temperature and the high temperature state are overloaded, the preset outside air reference temperature is compared. If the outside air temperature is higher than the outside air reference temperature, it operates in one of the predetermined modes of operation. When the outside air temperature is below the outside air reference temperature in the step of comparing the outside air temperature with the outside air reference temperature, the freezer reference temperature, the refrigerating room temperature, and the refrigerating room which are higher than the freezer temperature and the freezer setting temperature but can perform basic freezer functions Compared to the refrigerator compartment reference temperature, which is higher than the set temperature but capable of performing the functions of the basic refrigerator compartment, if the freezer compartment temperature is higher than the freezer compartment reference temperature and the refrigerator compartment temperature is higher than the refrigerator compartment reference temperature, the refrigerator compartment fan is turned on together with the compressor. When the refrigerator compartment is preferentially cooled and the freezer compartment temperature is below the freezer compartment reference temperature or the refrigerator compartment temperature is below the refrigerator compartment set temperature, the freezer compartment and the refrigerator compartment fan are turned on together with the compressor to simultaneously cool the refrigerator compartment and the freezer compartment.

Description

Control Method of Refrigerator with High Efficiency Muti-evaporator Cycle (H.M.CYCLE)

The present invention relates to a control method of a refrigerator. In particular, two coolers connected in series are respectively installed in a freezer compartment and a refrigerating compartment, and a high efficiency independent cooling cycle in which the temperature of each compartment is independently controlled by two fans installed in each compartment. The present invention relates to a control method of a refrigerator having an efficiency multi-evaporator cycle (HMCYCLE).

In general, as shown in FIG. 1, the refrigerator includes a freezer compartment 5 in a refrigerator body 4 having a heat insulation structure that forms a freezer compartment 2 and a refrigerator compartment 3 partitioned by an intermediate partition 1. The refrigerator compartment door 6 is provided and comprised. As shown in FIG. 2, the compressor 7, the condenser 8, the pressure reducer 9, and the cooler 10, which are components for performing the refrigerating cycle, are sequentially connected by the refrigerant pipe 11. Construct a closed circuit. Such a refrigerator performs a refrigeration cycle by receiving heat due to the change of state of the refrigerant passing through the refrigerant pipe 11 and the refrigeration cycle components, as indicated by the arrows in FIG. The evaporation of the refrigerant in) absorbs heat from the surroundings to produce cold air.

Referring to FIG. 1, the compressor 7 is installed below the main body 4, and the cooler 10 is installed on the rear wall of the freezing chamber 2. A cooling fan 12 is installed above the cooler 10, and a fan guide 14 and a cooling air duct 15 having a cooling air outlet 13 formed in front of the cooling fan 12 and a rear wall of the refrigerating chamber 3, respectively. Is installed. A portion of the cold air heat exchanged while passing through the cooler 10 is supplied to the freezing chamber 2 through the cold air outlet 13 of the fan guide 14, and the other part is supplied through the cold air outlet 13 of the cold air duct 15. It is supplied to the refrigerator compartment 3. The first return path 16 and the second return path 17 are respectively formed in the intermediate partition 1 for the return of cold air supplied to each chamber. Reference numeral 18 denotes an adjustment damper for adjusting the amount of cold air supplied to the refrigerating chamber 3.

Next, a control method of a conventional refrigerator will be described with reference to FIG. 3. First, in order to determine whether the compressor is on or off, the temperature of the freezer compartment is detected and the freezer compartment temperature (T _F ) is compared to a predetermined freezer compartment set temperature (T _FS ) at an appropriate temperature for freezing storage of food (step). 110). If the freezer compartment temperature T _F is higher than the freezer compartment set temperature T _FS in step 110, the compressor 7 and the cooling fan 10 are turned on (step 111), and the freezer compartment temperature T _F is the freezer compartment. When the temperature is equal to or lower than the set temperature T _FS , the compressor 7 and the cooling fan 10 are turned off (step 112). Next, after step 111 and step 112, the refrigerator compartment temperature T _R is compared with the predetermined refrigerator compartment set temperature T _RS at a suitable temperature for refrigerating the food (step 113), and the refrigerator compartment temperature T _R is When the temperature is higher than the set temperature T _RS , the control damper 18 is opened (step 114). When the refrigerator compartment temperature T _R is equal to or lower than the refrigerator compartment set temperature T _RS , the control damper 18 is closed (step 115).

In the conventional refrigerator, the refrigerating compartment and the freezing compartment are set to maintain about 3 ° C.-18 ° C. at standard temperature conditions, respectively, and there is a limit in controlling two temperature bands in one heat source (cooler), which lowers the energy efficiency of the refrigerator. There was a problem letting.

That is, one freezer controls the freezer compartment and the refrigerating compartment in the above-mentioned predetermined temperature range, and since the cold air generated by the cooler is distributed and supplied to the freezer compartment and the refrigerating compartment, it is difficult to quickly cool the freezer compartment and the refrigerating compartment together. Frequent opening and closing of the door during the sudden temperature rise of any one room there was a problem that can not be quickly cooled.

In particular, in the conventional refrigerator, since the cold air generated in the freezer cooler is guided by the cold air duct, controlled by the control damper, and supplied to the refrigerating compartment, the cooling rate of the refrigerating compartment becomes slow and at the same time rapidly changes in the temperature of the refrigerating compartment. There was a problem that could not respond. That is, since the cold air generated in the freezing chamber is supplied to the refrigerating chamber through the cold air duct, and the amount of cold air supplied is controlled by the control damper, it takes a considerable time to cool the refrigerating chamber to a predetermined temperature (about 3 ° C). In particular, when the consumer starts the refrigerator for the first time or operates the refrigerator without using it for a long time, the refrigerator compartment is in a high temperature of about 30 ° C, and therefore, it takes a considerable time to cool to a standard temperature of about 3 ° C. Even during operation, there was a limit in realizing constant temperature refrigeration because it could not respond quickly to temperature changes in the fridge. In order to solve these problems, refrigerators with dedicated fan motors are proposed in the freezer compartment and the refrigerating compartment, respectively, but in these refrigerators, the cooler is installed only in the freezer compartment, so that the cooling air generated in the freezer compartment must be supplied to the refrigerating compartment to increase the cooling speed. In addition to the limitations, there was a problem that can not control the freezer and refrigerator compartment separately.

Therefore, the present invention is to solve these problems, the main object of the present invention is to install a separate cooler in the freezer compartment and the refrigerating compartment and configured to control the freezer compartment and the refrigerating compartment separately to quickly cool each chamber as well as any chamber Even if the temperature rise occurs to provide a control method of the refrigerator that can be quickly cooled correspondingly.

Another object of the present invention is to install a separate cooling system (cooler and cooling fan) in the freezer compartment and the refrigerating compartment and to control them independently and at the same time varying the control method of each compartment in accordance with the temperature of the outside of the refrigerator cooling of each compartment It is to provide a control method of the refrigerator that can maximize and efficiently control.

1 is a side cross-sectional view showing the overall configuration of a conventional refrigerator.

2 is a cycle configuration diagram of the refrigerator shown in FIG.

3 is a flowchart illustrating a control process of the refrigerator illustrated in FIG. 1.

4 is a side cross-sectional view showing a schematic configuration of a refrigerator according to the H.M. cycle of the present invention.

5 is a cycle configuration diagram of the refrigerator according to the H.M. cycle of the present invention shown in FIG.

6 is a block diagram showing the configuration of a control unit of a refrigerator according to the H.M. cycle of the present invention.

7 is a flowchart illustrating Embodiment 1 of a refrigerator control method according to an H.M. cycle of the present invention.

8 is a flowchart illustrating Embodiment 2 of a refrigerator control method according to an H.M. cycle of the present invention.

9 is a flowchart illustrating Embodiment 3 of a refrigerator control method according to an H.M. cycle of the present invention.

10 is a flowchart showing Embodiment 4 of a refrigerator control method according to an H.M. cycle of the present invention.

* Explanation of symbols for main parts of the drawings

22: freezer 23: refrigerator

27: first cooler 28: refrigerator compartment fan

29: second cooler 30: freezer compartment fan

T _R , T _F : Freezer compartment temperature, Freezer compartment temperature T _RS , T _FS : Freezer compartment set temperature, Freezer compartment set temperature

T _A : Outside temperature T _AS : Outside reference temperature

T _ES : 1st cooler surface temperature T _FE : 2nd cooler surface temperature

T _RS2 , T _FS2 : Second refrigerator compartment set temperature, Second refrigerator compartment set temperature

T _RR , T _FR : Refrigeration chamber reference temperature, freezer reference temperature

In order to achieve the above object, the present invention discloses a control method of a refrigerator having a compressor, a mutually divided freezer compartment and a refrigerating compartment, a first cooler and a refrigerating fan installed in the refrigerating compartment, and a second cooler and a freezer fan installed in the freezer compartment. do. In the control method of the present invention, first, the outside air temperature is set in advance to determine whether the outside air temperature is in an overload state. If the outside air temperature is higher than the outside air reference temperature, it operates in one of the predetermined operating modes. When the outside air temperature is below the outside air reference temperature in the step of comparing the outside air temperature with the outside air reference temperature, the freezer reference temperature, the refrigerating room temperature, and the refrigerating room which are higher than the freezer temperature and the freezer setting temperature but can perform basic freezer functions Compared to the refrigerator compartment reference temperature, which is higher than the set temperature but capable of performing the functions of the basic refrigerator compartment, if the freezer compartment temperature is higher than the freezer compartment reference temperature and the refrigerator compartment temperature is higher than the refrigerator compartment reference temperature, the refrigerator compartment fan is turned on together with the compressor. When the refrigerator compartment is preferentially cooled and the freezer compartment temperature is below the freezer compartment reference temperature or the refrigerator compartment temperature is below the refrigerator compartment set temperature, the freezer compartment and the refrigerator compartment fan are turned on together with the compressor to simultaneously cool the refrigerator compartment and the freezer compartment.

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

First, a refrigerator according to the present invention will be described with reference to FIGS. 4, 5, and 6. As shown in FIG. 4, the refrigerator 20 according to the present invention includes a lower freezing compartment 22 and an upper refrigerating compartment which are mutually partitioned so that cold air mixing does not occur inside the refrigerator body 21 having a heat insulating structure. 23) is formed. The freezing compartment 22 and the refrigerating compartment 23 are partitioned by the intermediate partition 24 and are opened and closed by the freezing compartment door 25 and the refrigerating compartment door 26, respectively. That is, unlike the conventional refrigerator, there is no cold air path communicating the freezer compartment and the refrigerating compartment, and no return path is formed in the intermediate partition. The rear wall of the refrigerating chamber 23 is provided with a first cooler 27 and a refrigerating chamber fan 28, and the rear wall of the refrigerating chamber 22 is provided with a second cooler 29 and a freezing chamber fan 30. In the present specification, the freezer compartment fan and the refrigerating compartment fan are concepts including a fan motor. And the compressor 31 is installed below the refrigerator main body 21.

The cycle configuration of the refrigerator according to the present invention is as shown in FIG.

That is, the compressor 31, the condenser 32, the capillary tube 33, and the first cooler 27 and the second cooler 29 are sequentially connected by the refrigerant pipe 34 to form a closed circuit, and the first cooler The refrigerator compartment fan 28 and the freezer compartment fan 30 are respectively provided in the vicinity of the 27 and the second cooler 29. In particular, the second cooler 27 and the second cooler 29 are arranged in series so that all the refrigerant passing through the first cooler 27 passes through the second cooler 29. As shown by the arrow, the refrigerant changes state as it flows through the inside of the refrigerant pipe 34, and in particular, the refrigerant absorbs heat from the air that is evaporated and passes through the first cooler 27 and the second cooler 29. Create cold air.

The generated cold air is supplied to the freezing compartment 22 and the refrigerating compartment 23 by the operation of the refrigerating compartment fan 28 and the freezing compartment fan 30.

In such a refrigerator, a single refrigerant, for example, CFC-12, HFC-134a, or the like is used. The phase change process of the refrigerant will be described in more detail as follows. First, in the compressor 31, the refrigerant is compressed to high temperature and high pressure, and the compressed refrigerant flows through the condenser 32 to condense through heat exchange with the surroundings. The refrigerant condensed as described above is decompressed while passing through the capillary tube 33 or the expansion valve to be evaporated while passing through the first cooler 27 and the second cooler 29. Since the first cooler 27 and the second cooler 29 are arranged in series, and there is no structure between them, all of the refrigerant passing through the first cooler 27 passes directly through the second cooler 29. do. At this time, a portion of the refrigerant is evaporated while passing through the first cooler 27, and the rest of the refrigerant is evaporated while passing through the second cooler 29 to become a gas state. The refrigerant evaporated in this way constitutes a cycle by being sucked into the compressor 31, and the cycle is repeated according to the operation of the compressor. On the other hand, the refrigerant is evaporated to absorb heat from the air around the cooler, the operation of the refrigerator compartment fan 28 and the freezer compartment 30 to pass the air in the interior of the first cooler 27 and the second cooler 29. The cold air generated as the heat is taken away is supplied to the inside of the refrigerator again to cool the refrigerating compartment and the freezing compartment, as shown by arrows in FIG.

As such, a system having two coolers and two fans and using a single refrigerant as the working fluid is defined herein as an H.M. cycle. This H.M. cycle eliminates the need for components such as gas-liquid separators or valves to control the flow direction of the refrigerant between the chillers and allows the chillers to be arranged in series, simplifying the piping configuration for the refrigeration cycle. In addition, since a single refrigerant is used, the performance change according to the dispersion of the refrigerant charge amount as in the case of using a mixed refrigerant in the manufacturing process is not very large, which is very advantageous for mass production.

Next, the configuration of the controller of the refrigerator according to the H.M. cycle of the present invention will be described with reference to FIG. The input side of the control unit 35 has a door switch 36, a refrigerator compartment temperature sensor 37, a freezer compartment temperature sensor 38, an outside air temperature sensor 39, a first cooling key surface temperature sensor 40 and a second cooler surface. The temperature sensor 40 'is connected to detect whether the door is opened or closed, the temperature of the freezer compartment, the temperature of the refrigerating compartment, and the surface temperature of the first cooler and the second cooler, respectively, and transmitted to the controller 35 as an electric signal. In addition, the output side of the control unit 35, the first switch 41, the second switch 42, and the third switch for turning on and off the compressor 31, the refrigerator compartment fan 28 and the freezer compartment fan 30, respectively ( 43 is electrically connected to operate according to the above-described input signal. That is, the first switch 41, the second switch 42, and the third switch 43 are controlled by the switch controller 44 according to the signals input from the above sensors, respectively, so that the compressor 31 and The freezing chamber fan 28 and the refrigerating chamber fan 30 are turned on and off. Therefore, it is possible to independently control the compressor, the freezer compartment fan and the refrigerating compartment fan.

The control method of the control unit 35 includes a temperature T _F of the freezer compartment detected by the freezer compartment temperature sensor 38, a freezer compartment preset temperature T _RS , and a refrigerating compartment temperature sensor predetermined at a temperature suitable for freezing storage of food. This is done by comparing the temperature T _R of the refrigerating compartment sensed by (37) with the predetermined refrigerating compartment set temperature (T _RS ) to a temperature suitable for the refrigeration of food. In the present specification, the set temperature refers to a temperature range within the refrigerator capable of maintaining inherent characteristics of the refrigerator, and the freezer setting temperature (T _FS ) is a predetermined temperature at a temperature suitable for freezing storage of food as described above. It is the range of l5 ° C--21 ° C.

That is, the freezer compartment set temperature T _FS is set within one of -21 ° C. (freezing room), -18 ° C. (during freezing), and -15 ° C. (frozen medicine) predetermined according to a user's selection. In addition, the refrigerating chamber set temperature (T _RS ), as described above, is a predetermined temperature at a temperature suitable for refrigeration of food, and is in the range of 6 ° C to -1 ° C. That is, the refrigerating chamber set temperature (T _RS ) is set within one of -1 ° C. (cold steel), 3 ° C. (during refrigeration), and 6 ° C. (refrigeration medicine) predetermined according to a user's selection.

Next, a control method of the refrigerator according to the H.M. cycle of the present invention will be described. In the refrigerator control method of the present invention, the operation form of each room is basically taken in consideration of the external temperature of the refrigerator in consideration of the external temperature of the refrigerator.

In more detail, in the control method of the present invention, first, a criterion of whether the external temperature T _A sensed by the external air temperature sensor 39 and the external state of the refrigerator as an external temperature of the refrigerator is an overload condition. Compare the preset external reference temperature (T _AS ) as much as possible. In the present specification, the outside air reference temperature (T _AS ) is a temperature at which the outside of the refrigerator, in particular, the outside air is at a high temperature so that the refrigerator may be overloaded if the refrigerator is normally operated. The outside air reference temperature (T _AS ) is defined as a range of about 30 ~ 35 ℃ (preferably 32 ℃). Therefore, when the outside air temperature (T _A ) is higher than the outside air reference temperature (T _AS ), when the refrigerator is operated, the refrigerator is overloaded, and in this case, an overload condition is caused. The temperature range of the outside air reference temperature is not necessarily limited thereto, but may vary somewhat depending on the performance or state of the refrigerator. The reason for comparing the outside air temperature (T _A ) and the outside air reference temperature (T _AS ) is to change the operation mode of the refrigerator, especially in a state where the temperature of the outside air is high (overload state) such as in summer.

Next, if the outside temperature T _A is less than or equal to the outside reference temperature T _AS , the freezer compartment temperature T _F , the freezer compartment reference temperature T _FR , the refrigerator compartment temperature T _R , and the refrigerator compartment reference temperature T _RR Compare.

The freezer temperature T _F and the refrigerator compartment temperature T _R are detected by the freezer compartment temperature sensor 38 and the refrigerator compartment temperature sensor 37, respectively, and the freezer compartment reference temperature T _FR and the refrigerator compartment reference temperature T _RR are previously determined. Set value. In the present invention, the reference temperature is defined in order to put another temperature band similar to the set temperature in a certain temperature range outside the set temperature band, that is, the inside of the high temperature range for maintaining the unique characteristics of the refrigerator for efficient control of the refrigerator.

That is, when the outside air temperature T _A is less than the outside air reference temperature T _AS , the freezer compartment temperature T _F , the freezer compartment reference temperature T _FR , the refrigerator compartment temperature T _R , and the refrigerator compartment reference temperature T _RR The reason for the comparison is that when the temperatures of both chambers are higher than the above-mentioned reference temperature T _FR (T _RR ), the refrigerating chamber is first cooled, and the temperature of the chambers is higher than the reference temperature of the chambers. If it is low, it is to cool both chambers at the same time. In more detail, in the state where the outside temperature T _A is less than or equal to the outside reference temperature T _AS (that is, not in an overload state), the temperatures of both chambers are higher than the above-mentioned reference temperature T _FR (T _RR ). If the condition is high, the external condition of the refrigerator is not excessive, but the internal condition of the refrigerator is considered to be slightly overloaded, so if two chambers are cooled at the same time, it may be unreasonable to operate one of the chambers (preferably a refrigerator). It is to take the operation mode to cool. In addition, when the temperature of the room is higher than the reference temperature of the room even when the outside temperature T _A is equal to or lower than the outside air reference temperature T _AS (that is, not overloaded), the external condition of the refrigerator may also be Since it is not an overload condition and the internal condition of the refrigerator is not determined to be an overload condition, it takes an operation mode to cool both chambers so that both the refrigerating compartment and the freezing compartment can reach the set temperature quickly.

Refrigerating chamber reference temperature (T _RR) herein is defined as the band until you can feel from the temperatures begin to escape to a warmer temperature setting (T _RS), although higher than the set fridge temperature (T _RS) the fridge cold temperatures, Specifically, it is defined as a band of 7 to 15 ° C. Particularly preferred refrigerating chamber reference temperature (T _RR ) is 10 ° C. On the other hand, freezing reference temperature (T _FR) herein freezing set temperature (T _FS) of from a temperature that begins to escape, although freezing set temperature (T _FS) than the high but defined by the bands in a freezer to a temperature at which the ice can freeze Specifically, it is defined as a band of -14 to -5 占 폚. Particularly preferred freezer reference temperature (T _FR ) is -10 ° C.

Hereinafter, a specific embodiment of a refrigerator control method according to the present invention will be described with reference to the drawings.

Example 1

Example 1 will be described with reference to FIG.

First, the outside air temperature T _A , which is the outside temperature of the refrigerator, is compared with the outside air reference temperature T _AS , which is a standard of whether the external state of the refrigerator is overloaded (step 351).

If the outside air temperature T _A is higher than the outside air reference temperature T _AS in step 351, the refrigerator is overloaded even though the external condition of the refrigerator is taken as an overload condition, and thus the refrigerator is overloaded. The cooling operation form (A) is taken. This simultaneous cooling operation form (A) basically cools the freezer compartment and the refrigerating compartment simultaneously, but when the temperature of the second cooler becomes lower than the temperature of the freezer compartment when the surface temperature of the second cooler that is the freezer evaporator is higher than that of the freezer compartment. It refers to an operation mode that delays the operation of the freezer compartment until. Therefore, the cooling speed of the freezer compartment and the refrigerating compartment can be improved at the same time. In particular, when the temperature of the second cooler is higher than the temperature of the freezer compartment, the operation of the freezer compartment fan is delayed for a predetermined time to prevent the adverse effect of raising the freezer compartment temperature.

The operation mode A will be described in detail. First, the freezer compartment temperature T _F is compared with the freezer compartment set temperature T _FS (step 231). In step 231, the freezer compartment temperature T _F is the freezer compartment set temperature T. _FS ), the refrigerator compartment temperature T _R and the refrigerator compartment set temperature T _RS are compared (step 232). If the refrigerator compartment temperature T _R is higher than the refrigerator compartment set temperature T _RS in step 232, the freezer compartment temperature T _F is compared with the second cooler surface temperature T _FE (step 233), and the freezer compartment temperature T _F. ) Is above the second chiller surface temperature (T _FE ), the compressor, freezer fan and refrigerating fan are turned on (step 234), otherwise the compressor and refrigerating fan are turned on and the freezer fan is turned off ( off) (step 235). That is, when both the freezer compartment and the refrigerating compartment are in an unsatisfactory state, steps 234 of turning on the compressor, the freezer compartment fan, and the refrigerating compartment fan are performed to cool both chambers. In this case, however, the surface temperature of the second cooler is increased by comparing the freezer temperature with the surface temperature of the second cooler, which is the freezer evaporator (specifically, 1 to 5 ° C higher than the second cooler surface temperature) before cooling both chambers. When the temperature is higher than the temperature of the freezer compartment, the ON point of the freezer compartment fan is delayed for a predetermined time to save energy. This situation occurs when the residual refrigerant in the condenser and capillary tube of the high temperature and high pressure flows into the first cooler and the second cooler in the compressor off state after the normal operation, and the temperature of the second cooler, which is the freezer compartment evaporator, becomes higher than the freezer temperature. In this case, since the adverse effect of increasing the temperature of the freezing compartment occurs when the freezing compartment fan is operated, the operation of the freezing compartment fan is delayed until the temperature of the second cooler becomes lower than the temperature of the freezing compartment.

In addition, in step 232, compared to the fresh food compartment temperature (T _R), the refrigerating chamber set temperature (T _RS) in the freezer compartment temperature (T _F) or less (step 236), freezing temperature (T _F) and a second cooler surface temperature (T _FE ) (specifically 2 ° C higher than the second cooler surface temperature (T _FE )), the compressor and freezer fan are turned on and the fridge fan is turned off (step 237). Off and only the compressor is turned on (step 238).

That is, even when the freezer compartment is in an unsatisfactory state and the refrigerator compartment is in a satisfied state, the operation of the freezer compartment fan is determined by comparing the freezer compartment temperature with the temperature of the second cooler. Steps 237 and 238 then return to the first step 231.

On the other hand, when the freezer compartment temperature (T _F ) is less than the freezer compartment set temperature (T _FS ) in step 231 by comparing the refrigerator compartment temperature (T _R ) and the refrigerator compartment set temperature (T _RS ) (step 239), the refrigerator compartment temperature (T _R ) If the refrigerator is above the refrigerator set temperature (T _RS ), the compressor and the refrigerator pan are turned on and the refrigerator compartment fan is turned off (step 235). If the refrigerator compartment temperature (T _R ) is below the refrigerator compartment set temperature (T _RS ), the compressor, the refrigerator compartment fan and the refrigerator compartment are Stop the fan (step 240).

In operation 240, it is determined whether the first cooler surface temperature T _ES is higher than 0 ° C. (step 243). When the first cooler surface temperature T _ES is 0 ° C. or lower in step 243, the compressor and the freezer compartment fan are turned off and only the refrigerating compartment fan is turned on (step 244) to perform defrosting of the first cooler which is a refrigerator compartment evaporator. That is, the defrosting of the first cooler is performed by the operation of the refrigerator compartment fan only immediately after the compressor is turned off in the satisfied state of the freezer compartment and the refrigerator compartment. This is because the temperature of the refrigerating compartment is higher than the surface temperature of the first cooler immediately after the compressor is turned off. By operating only the refrigerating fan immediately after the compressor is turned off, the air of the refrigerating compartment having a relatively high temperature passes through the first refrigerating unit. Simultaneous defrosting and cooling of the refrigerating compartment is performed. Therefore, it is not necessary to use a separate electric heater can reduce power consumption or prevent excessive temperature rise due to the use of the electric heater.

After step 244, step 243 is continued. When step 143, the first cooler surface temperature T _ES is higher than 0 ° C, the process returns to the first step 231.

On the other hand, following step 235 and step 234, the freezer compartment temperature T _F and the freezer compartment set temperature T _FS are compared (step 241), and in step 241 the freezer compartment temperature T _F is higher than the freezer compartment set temperature T _FS . If the flow returns to step 233 and the freezer compartment temperature T _F is less than or equal to the freezer compartment set temperature T _FS , the refrigerator compartment temperature T _R is compared with the refrigerator compartment set temperature T _RS (step 242). If T _R ) is higher than the refrigerator compartment set temperature T _RS , the process returns to step 235, and if the refrigerator compartment temperature T _R is equal to or less than the refrigerator compartment set temperature T _RS , step 240 is performed.

If the outside air temperature (T _A ) is less than the outside air reference temperature (T _AS ) in the first step 351, the freezer compartment temperature (T _F ), the freezer compartment reference temperature (T _FR ), the refrigerator compartment temperature (T _R ) and the refrigerator compartment reference temperature (T _RR). ) Are compared (step 352). In step 352, if the freezer temperature T _F is higher than the freezer reference temperature T _FR and the freezer temperature T _R is higher than the freezer reference temperature T _RR , the external condition of the refrigerator is not overloaded but the internal condition of the refrigerator is Since it is judged that the state is slightly overloaded, it may be unreasonable if two chambers are cooled at the same time. Therefore, the operation mode (B) is first taken to cool the refrigerating compartment. In step 352, the freezer compartment temperature (T _F ) is the freezer compartment reference temperature (T). _FR ) or below, or when the refrigerator compartment temperature (T _R ) is below the refrigerator compartment reference temperature (T _RR ), it is determined that the external condition of the refrigerator is not overloaded and the internal condition of the refrigerator is not overloaded. Take the shape, ie the simultaneous cooling operation form (C), so that both chambers are cooled quickly. Since the simultaneous cooling operation form C is the same as the simultaneous cooling operation form A mentioned above, description is abbreviate | omitted and the operation form B which cools a refrigerator compartment first is demonstrated with reference to an initial surface.

In the operation form B which cools the refrigerator compartment first, first, the freezer compartment temperature T _F and the freezer compartment set temperature T _FS are compared (step 291), and the freezer compartment temperature T _F is the freezer compartment set temperature T _FS . If it is higher, the compressor and the refrigerating fan are turned on and the freezer compartment fan is turned off (step 292). Following the step 292, the second refrigerating chamber preset temperature is higher than the refrigerator compartment temperature T _R and the refrigerator compartment set temperature T _RS . Compare (T _RS2 ) (step 293), if the refrigerator compartment temperature (T _R ) is higher than the second refrigerator compartment set temperature (T _RS2 ), and returns to step 292 to cool only the refrigerator compartment, the refrigerator compartment temperature (T _R ) When the temperature is less than the two refrigerator compartment set temperature T _RS2 , the compressor, the freezer compartment fan, and the refrigerator compartment fan are turned on to cool the freezer compartment together with the refrigerator compartment (step 294). That is, once the freezer compartment temperature (T _F ) is detected and the freezer compartment is in an unsatisfactory state, the refrigerator compartment is cooled first regardless of the state of the refrigerator compartment, but the refrigerator compartment is higher than the refrigerator compartment set temperature (T _RS ) while the refrigerator compartment is cooled. When the second refrigerator compartment set temperature T _RS2 is reached, cooling of the freezer compartment is also performed to prevent the cooling point of the freezer compartment from being delayed due to the delay of the refrigerator compartment cooling. As described above, the operation of the compressor and the refrigerating fan to determine the state of the freezer compartment to perform the cooling of the refrigerating compartment, when the refrigerator is not used for a long time or due to a power failure, the temperature inside the refrigerator is significantly different from the recirculation temperature (refrigerator set temperature). In this state, when both chambers are simultaneously cooled or the freezer is cooled, the compressor may be excessively loaded and the maneuverability may be weakened. Here, the second refrigerator compartment set temperature T _RS2 is set in the refrigerator compartment. It is preferable that 1-5 degreeC is higher than temperature _TRS , and it is especially preferable that it is 2 degreeC higher. Therefore, the cooling rate of the refrigerating compartment as well as the cooling rate of the freezing compartment can be improved by starting the cooling of the freezer compartment even before the refrigerating compartment is completely cooled below the set temperature. This situation is particularly likely to occur during initial operation (startup).

Following step 294, the refrigerator compartment temperature (T _R ) and the refrigerator compartment set temperature (T _RS ) are compared (step 295), and if the refrigerator compartment temperature (T _R ) is lower than the refrigerator compartment set temperature (T _RS ), the compressor and the freezer fan are continuously Turn on and turn off the fridge to stop cooling the fridge (step 297), and if the fridge temperature (T _R ) is higher than the fridge set temperature (T _RS ), the freezer temperature (T _F ) and the freezer set temperature (T _FS ) (Step 296), if the freezer temperature (T _F ) is higher than the freezer set temperature (T _FS ), the process returns to step 294 to continuously turn on the compressor, the freezer compartment, and the refrigerating compartment fan, and the freezer temperature (T _F). ) Is below the freezer compartment set temperature T _FS , the compressor, both the freezer compartment fan and the refrigerating compartment fan are turned off (step 298). In addition, the step 297 of turning on the compressor and the freezer compartment fan and turning off the refrigerating compartment fan is compared with the freezer compartment temperature T _F and the freezer compartment set temperature T _FS (step 299), where the freezer compartment temperature T _F is set to the freezer compartment. If the temperature is higher than the temperature T _FS , the process returns to step 295. If the freezer temperature T _F is equal to or lower than the freezer compartment set temperature T _FS , the compressor, the freezer compartment fan, and the refrigerator compartment fan are turned off (step 298). If the freezer compartment temperature T _F is less than or equal to the freezer compartment set temperature T _FS in step 291, step 298 is performed.

On the other hand, after step 298, it is compared whether the first cooler surface temperature T _ES is higher than 0 ° C (step 300). When the first cooler surface temperature T _ES is 0 ° C. or lower in step 300, the compressor and the freezer compartment fan are turned off and only the refrigerating compartment fan is turned on (step 301) to perform defrosting of the first cooler which is a refrigerator compartment evaporator. As described in the above simultaneous cooling operation form (A), the temperature of the refrigerating compartment is immediately higher than the surface temperature of the first cooler immediately after the compressor is turned off. The air is passed through the first cooler to perform defrost of the first cooler and to simultaneously cool the refrigerator compartment.

As described above, in the case of the operating mode (B), when the external condition of the refrigerator is not overloaded and the internal condition of the refrigerator is slightly overloaded (either the freezer or the freezer is higher than the reference temperature), only the freezer compartment is identified and the freezer compartment is checked. In this unsatisfactory state, there is an advantage in that cooling of the refrigerating chamber is first started to prevent the compressor from being crowded, and that the required cooler is first cooled quickly. In addition, even if the refrigerator compartment does not cool below the set temperature during the cooling of the refrigerator compartment, when the second refrigerator compartment set temperature, which is higher than the refrigerator compartment set temperature, reaches the second refrigerator compartment set temperature, the freezer compartment starts cooling, so that the cooling rate of the refrigerator compartment as well as the cooling rate of the freezer compartment are also increased. Can be improved.

As described above, in Example 1, when the outside air temperature is higher than the outside air reference temperature (when the external condition is overloaded), the freezer compartment and the refrigerating compartment are simultaneously cooled, but the temperature of the second cooler that is the freezer evaporator is higher than the freezer compartment temperature. It takes an operation mode that delays the operation of the freezer compartment fan until the temperature of the second cooler becomes lower than the temperature of the freezer compartment. If the outside air temperature is lower than the outside reference temperature, the reference temperature of each chamber is judged and the temperature of each chamber is the same. If the temperature is below (external and internal conditions are not overloaded), take the operation of cooling both the freezer compartment and the refrigerating compartment from the beginning so that both the refrigerating compartment and the freezer compartment can reach the set temperature. If the temperature outside the standard temperature (the external condition is not overloaded but the internal condition is slightly overloaded) Upon cooling all the rooms it is brought both quickly since it is difficult to reach a set temperature by taking the operation form of preferentially cooled by the fresh food compartment reaches a preset temperature rapidly the fresh food compartment with priority.

Example 2

Example 2 will be described with reference to FIG. Also in Example 2, first, the outside air temperature T _A , which is the outside temperature of the refrigerator, is compared with the outside air reference temperature T _AS , which is a standard of whether the external state of the refrigerator is overloaded (step 351). When T _A ) is the outside air reference temperature T _AS , which is the same as in the above-described first embodiment, a description thereof will be omitted.

If the outside air temperature T _A is higher than the outside air reference temperature T _AS in step 351, the refrigerator is overloaded even though the external condition of the refrigerator is taken as an overload condition. Take independent cooling operation form (D).

In the independent cooling operation mode (D), first, the freezer compartment temperature T _F , the freezer compartment set temperature T _FS , the refrigerator compartment temperature T _R and the refrigerator compartment set temperature T _RS are compared (251). Freezing temperature at step 251 (T _F) is freezing set temperature (T _FS) higher or refrigerator temperature (T _R) a refrigerating chamber set temperature (T _RS) than the cold room temperature (T _R) if the high and the refrigerating chamber set temperature (T _RS ) is compared (step 252). If the refrigerator compartment temperature T _R is higher than the refrigerator compartment set temperature T _RS in step 252, the freezer compartment temperature T _F and the freezer compartment set temperature T _FS are compared (step 253), and the freezer compartment temperature T _F is increased. If the freezer temperature is higher than the T _FS , the compressor, the refrigerating fan, and the freezer fan are turned on to cool both chambers simultaneously (step 254), and if the freezer temperature (T _F ) is lower than the freezer temperature (T _FS ), the compressor and The refrigerator compartment fan is turned on and the freezer compartment fan is turned off to cool only the refrigerator compartment (step 255).

If the refrigerator compartment temperature T _R is equal to or lower than the refrigerator compartment set temperature T _RS in step 252, the freezer compartment temperature T _F and the freezer compartment set temperature T _FS are compared (step 256), and the freezer compartment temperature T _F is the freezer compartment. If the temperature is lower than the set temperature (T _FS ), the process returns to step 251. If the freezer temperature (T _F ) is higher than the freezer temperature (T _FS ), the compressor and the freezer fan are turned on and the refrigerator compartment fan is turned off to cool the freezer ( Step 257). In other words, whether the refrigerator is unsatisfactory or the refrigerator is unsatisfactory, the compressor is operated, but it is determined whether the refrigerator compartment fan or the refrigerator compartment fan is operated with the compressor according to the state of each chamber. After steps 254, 255 and 257, the process returns to the first step.

Thus, in the present embodiment, the compressor can be operated not only by the state of the freezer compartment but also by the state of the refrigerator compartment. In particular, even when the temperature of the refrigerator compartment is higher than the refrigerator compartment set temperature regardless of the freezer compartment, the compressor is turned on. This situation occurs when the refrigerating chamber becomes a high temperature above the set temperature due to excessive use of the refrigerating compartment while the compressor is turned off while performing normal operation. Therefore, each chamber is cooled completely independently at any time if it needs to be cooled regardless of the condition of other chambers, so that the set temperature of each chamber can be maintained most faithfully.

On the other hand, if the refrigerator compartment temperature (T _R ) is below the refrigerator compartment set temperature (T _RS ) and the freezer compartment temperature (T _F ) is below the freezer compartment set temperature (T _FS ) in step 251, the compressor, the refrigerator compartment fan, and the freezer compartment fan are turned off ( Step 258). Step 258 is followed by a comparison of whether the first cooler surface temperature T _ES is higher than 0 ° C. (step 259). When the first cooler surface temperature T _ES is 0 ° C. or lower in step 259, the compressor and the freezer compartment fan are turned off and only the refrigerator compartment fan is turned on (step 260) to perform defrosting of the first cooler, which is a refrigerator compartment evaporator. After step 260, step 259 is continued, and when step 159, the first cooler surface temperature T _ES is higher than 0 ° C, the process returns to the first step 251.

As described above, Example 2 takes the form of independent cooling when the outside air temperature is higher than the outside air reference temperature (when the external condition is overloaded), and when the outside air temperature is below the outside air reference temperature, each room is the same as in Example 1. If the temperature of each chamber is below the standard temperature (external and internal conditions are not overloaded), the simultaneous cooling operation is performed to cool both the freezer compartment and the refrigerating compartment. If the room's reference temperature is exceeded (the external condition is not overloaded but the internal condition is slightly overloaded), the refrigerator is preferentially cooled.

Example 3

Example 3 will be described with reference to FIG. Also in Example 3, first, by comparing the outside air temperature T _A , which is the outside temperature of the refrigerator, with the outside air reference temperature T _AS , which is a reference whether the external state of the refrigerator is overloaded (step 351), the outside air temperature ( When T _A ) is less than or equal to the outside reference temperature T _AS , the same operation as in the above-described embodiments is performed, and thus description thereof will be omitted.

If the outside air temperature T _A is higher than the outside air reference temperature T _AS in step 351, the refrigerator is overloaded even though the external condition of the refrigerator is taken as an overload condition. If both chambers are higher than the set temperature, the freezer compartment is cooled after the refrigerating compartment is cooled, but operation mode (E) is performed in which the constant temperature refrigeration is performed even during the freezer compartment cooling.

In this operation mode (E), first, the freezer compartment temperature T _F is compared with the freezer compartment set temperature T _FS (step 271). In step 271, the freezer compartment temperature T _F is greater than the freezer compartment set temperature T _FS . If high, the refrigerator compartment temperature T _R and the refrigerator compartment set temperature T _RS are compared (step 272). If in step 272 the refrigerating compartment temperature (T _R) is higher than the refrigerating chamber set temperature (T _RS), the turning on and turning off the freezing fan of the compressor and refrigerating compartment fan do the fresh food compartment cooling (step 273), the refrigerating compartment temperature (T _R) is When the refrigerator compartment temperature is below the set temperature T _RS , the compressor and the freezer compartment fan are turned on and the refrigerator compartment fan is turned off to perform freezer compartment cooling (step 274). Subsequent to step 273, step 272 is continued to proceed to step 274 when the refrigerator compartment temperature T _R is equal to or lower than the refrigerator compartment set temperature T _RS . That is, when both the freezer compartment and the refrigerating compartment are unsatisfactory, the refrigerating compartment is cooled, and when the refrigerating compartment is below the set temperature by cooling the refrigerating compartment, the freezer compartment is cooled. In addition, when the refrigerating chamber becomes higher than the set temperature during cooling of the same chamber, cooling of the refrigerating chamber is performed along with cooling of the freezing chamber to achieve constant temperature refrigeration.

The refrigerator compartment temperature (T _R ) and the refrigerator compartment set temperature (T _RS ) are compared during the freezer compartment cooling in step 274 (step 275). When the refrigerator compartment temperature (T _R ) is higher than the refrigerator compartment set temperature (T _RS ), the compressor and the freezer fan and In addition, the refrigerator compartment fan is also turned on to simultaneously cool the refrigerator compartment (step 276).

Subsequent to step 276, the refrigerating compartment temperature (T _R) as compared to the refrigerating chamber set temperature (T _RS) (step 277), the refrigerating compartment temperature (T _R) that is higher than the refrigerating chamber set temperature (T _RS), the freezing temperature (T _F) And the freezer set temperature (T _FS ) are compared (step 278), and if the freezer temperature (T _R ) is below the freezer set temperature (T _RS ), turn on the compressor and freezer fan and turn off the freezer fan to stop cooling the freezer compartment. (Step 279). In step 278, if the freezer temperature T _F is higher than the freezer set temperature T _FS , the process returns to step 276. If the freezer temperature T _F is less than or equal to the freezer set temperature T _FS , the compressor, the freezer fan, and the refrigerating fan Turn off all (step 280). In addition, following step 279, the freezer temperature T _F and the freezer setting temperature T _FS are compared (step 281), and when the freezer temperature T _R is higher than the freezer setting temperature T _RS , the process returns to step 279. When the freezer compartment temperature T _R is less than or equal to the freezer compartment set temperature T _RS , the compressor, the freezer compartment fan, and the refrigerating compartment fan are turned off (step 280).

In addition, when the refrigerator compartment temperature T _R is equal to or lower than the refrigerator compartment set temperature T _RS in step 275, the freezer compartment temperature T _F is compared with the freezer compartment set temperature T _FS (step 282), and the freezer compartment temperature T _F. Is higher than the freezer compartment set temperature T _FS , the process returns to step 274, and if the freezer compartment temperature T _F is equal to or lower than the freezer compartment set temperature T _FS , step 280 is performed. In addition, when the freezer compartment temperature T _F is less than or equal to the freezer compartment set temperature T _FS in step 271, step 280 is performed.

On the other hand, following step 280, the first cooler surface temperature T _ES is compared to be higher than 0 ° C (step 283). When the first cooler surface temperature T _ES is equal to or lower than 0 ° C., the compressor and the freezer compartment fan are turned off and only the refrigerating compartment fan is turned on (step 284) to perform defrost of the first cooler which is a refrigerator compartment evaporator.

As described above, in Example 3, when the outside air temperature is higher than the outside air reference temperature (when the external condition is overloaded), when the freezer and the refrigerating chamber are both dissatisfied, the refrigerator is cooled after the refrigerating chamber is lower than the set temperature. When the refrigerating compartment becomes higher than the set temperature during the cooling of the freezer compartment, the refrigerator takes an operation mode for cooling the refrigerating compartment together with the freezing compartment. When the outside air temperature is below the outside air reference temperature, the same operation mode as in the above embodiments is taken.

Example 4

Example 4 will be described with reference to FIG. Also in Example 4, first, by comparing the outside air temperature T _A , which is the outside temperature of the refrigerator, with the outside air reference temperature T _AS , which is a reference whether the external state of the refrigerator is overloaded (step 351), the outside air temperature ( When T _A ) is less than or equal to the outside reference temperature T _AS , the same operation as in the above-described embodiments is performed, and thus description thereof will be omitted.

If the outside air temperature T _A is higher than the outside air reference temperature T _AS in step 351, the refrigerator is overloaded even though the external condition of the refrigerator is taken as an overload condition. When both chambers are higher than the set temperature, the freezer compartment is cooled after cooling the refrigerating compartment, but an operation mode (F) is performed in which the constant temperature refrigeration is performed even during the freezer compartment cooling.

In this operation mode (F), the freezer compartment temperature T _F , the freezer compartment set temperature T _FS , and the freezer compartment temperature T _F compare the freezer compartment temperature T _FS in turn (steps 331 and 332). If both are higher than the set temperature of each chamber, turn on the refrigerator compartment fan and turn off the freezer compartment to cool the refrigerator compartment (step 333) .If only the freezer compartment is above the set temperature, turn on the compressor and freezer fans, turn off the refrigerator compartment fan to cool the freezer compartment. (Step 334) If the freezer compartment is below the set temperature, the compressor, freezer compartment fan, and refrigerating compartment fan are turned off regardless of the temperature of the refrigerator compartment (step 339).

During the refrigerating of the refrigerator in step 333, the freezer compartment temperature T _F is compared with the second freezer compartment set temperature T _FS2 , which is a predetermined temperature (1 to 5 ° C. and 2 ° C.) higher than the freezer compartment set temperature (step 335). T _F), the second flow returns to include step 332. If the freezer set temperature (T _FS2) or less, freezing temperature (T _F) is the second freezing set temperature (T _FS2) bore when is high, the compressor and the freezer compartment fan and a refrigerator compartment fan On (step 336). That is, when both the freezer compartment and the refrigerating chamber are unsatisfactory, the refrigerator compartment is cooled once, but when the freezer compartment reaches a second freezer setting temperature higher than the set temperature in order to prevent the freezer temperature from being excessively raised during the cooling of the refrigerator compartment, Start the freezer fan. This situation occurs when the freezing chamber is frequently used during the refrigerating chamber cooling.

On the other hand, during the cooling of both chambers of step 336, the refrigerator compartment temperature (T _R ), the refrigerator compartment set temperature (T _RS ), the freezer compartment temperature (T _F ) and the freezer compartment set temperature (T _FS ) in turn (steps 337 and 338), If both chambers are unsatisfactory, the process returns to step 336. If the refrigerator compartment is satisfied, the cooling of the refrigerator compartment is stopped (step 334), and if the refrigerator compartment is satisfied, both chambers stop cooling (step 339).

Meanwhile, during the cooling of the freezer compartment in step 334, the freezer compartment temperature T _F , the freezer compartment set temperature T _FS , the refrigerator compartment temperature T _R , and the refrigerator compartment set temperature T _RS are compared sequentially (steps 340 and 341). When the state of dissatisfaction is reached, the freezer compartment and the refrigerator compartment are cooled (Step 339 is performed during the freezer compartment cooling), and when the freezer is satisfied, the compressor, the freezer fan, and the refrigerator compartment fan are turned off (step 339). .

Step 339 is followed by comparing whether the first cooler surface temperature T _ES is higher than 0 ° C. (step 342), and if the first cooler surface temperature T _ES is 0 ° C. or lower in step 342, the compressor and freezer compartment fan are turned off. And only the refrigerator compartment fan is turned on (step 343) to perform defrost of the first refrigerator, which is a refrigerator compartment evaporator. This defrost is the same as the above-described embodiments.

As described above, in Example 4, when the outside air temperature is higher than the outside air reference temperature and the freezer compartment and the refrigerating compartment are both unsatisfactory, the refrigerator compartment is cooled after the refrigerating compartment is cooled below the set temperature. At this time, if the refrigerating compartment is higher than the set temperature even during the cooling of the freezer compartment, the refrigerating compartment is cooled to achieve constant temperature refrigeration, and if the temperature of the freezer compartment is high even during the refrigerating compartment, the freezer compartment is cooled to achieve constant temperature freezing. If the outside air temperature is less than the outside air reference temperature is the same as the above-described embodiments.

As described in detail above, in the present invention, by installing separate cooling systems (coolers and cooling fans) in the freezer compartment and the refrigerating compartment and controlling them independently, the control method of each compartment is changed according to the temperature of the outside of the refrigerator. It can maximize the cooling speed and control efficiently. In particular, when the temperature of both chambers is higher than the reference temperature T _FR (T _RR ) when the outside temperature T _A is less than or equal to the outside reference temperature T _AS (that is, not overloaded), the outside of the refrigerator The condition is not an overload condition, but the internal condition of the refrigerator is considered to be slightly overloaded, so if two chambers are cooled at the same time, it may be an unreasonable operation. By taking an operation mode in which one chamber (preferably a refrigerating chamber) is preferentially cooled In addition to improving the cooling rate, efficient cooling can be performed, and the temperature of the chamber can be changed to any one of the chambers in the state where the outside air temperature T _A is lower than the outside air reference temperature T _AS (that is, not overloaded). When the temperature is higher than the reference temperature of the room, it is determined that neither the external condition of the refrigerator is overloaded nor the internal condition of the refrigerator is not overloaded. By taking the operation mode, both the refrigerating compartment and the freezing compartment have an effect of quickly reaching the set temperature.

Claims (30)

In the control method of a refrigerator having a compressor, a mutually divided freezer compartment and a refrigerating compartment, and a first cooler and a refrigerating fan are installed in the refrigerating compartment, and a second cooler and a freezer compartment fan are installed in the freezer compartment. To determine whether the condition is compared with the preset outside air reference temperature (step 351), and if the outside air temperature is higher than the outside air reference temperature, the freezer compartment temperature and the predetermined freezer compartment preset temperature is compared with the appropriate temperature for freezing storage of food (Step 231), when the freezer compartment temperature is higher than the freezer compartment set temperature, the refrigerator compartment temperature is compared with a preserved refrigerator compartment set temperature at an appropriate temperature for cold storage of the food (step 232), and the refrigerator compartment temperature is set in the refrigerator compartment If the temperature is higher than the temperature, the compressor, the refrigerating fan and the freezer fan are all turned on to perform simultaneous cooling of the refrigerating compartment and the freezing compartment. When the outside air temperature is less than or equal to the outside air reference temperature in the step 234 and comparing the outside air temperature with the outside air reference temperature (step 351), the freezer compartment temperature and the freezer compartment setting temperature are higher than the basic freezer compartment. The freezer compartment reference temperature may be compared with a predetermined temperature, and the refrigerator compartment reference temperature may be compared with the refrigerator compartment reference temperature, which is higher than the refrigerator compartment preset temperature but higher than the refrigerator compartment preset temperature (step 352). When the freezer compartment temperature is higher than the freezer compartment reference temperature and the refrigerating compartment temperature is higher than the refrigerating compartment set temperature, the refrigerator compartment fan is turned on together with the compressor to preferentially cool the refrigerating compartment. In step 352, the freezer compartment temperature is the freezer compartment. Below the reference temperature or the refrigerator compartment temperature is below the refrigerator compartment set temperature Yiwu is a control method of a refrigerator comprising the steps of: turning on the freezer fan and the refrigerator compartment fan with the compressor performs a simultaneous cooling of the refrigerator compartment and the freezer compartment. The method of claim 1, wherein the step of performing simultaneous cooling (step 234) is performed by first comparing the freezer compartment temperature with the second cooler surface temperature (step 233), and if the freezer compartment temperature is higher than the second cooler surface temperature, If the freezer compartment temperature is lower than the second cooler surface temperature, the compressor and the refrigerating unit fan are turned on and the freezer compartment fan is turned off (step 235), and the freezer compartment control is performed when the freezer compartment temperature is higher than the second cooler surface temperature. Way. The freezer compartment temperature according to claim 1 or 2, wherein following the step 234, the freezer compartment temperature and the freezer compartment preset temperature are compared (step 241), and the freezer compartment temperature and the refrigerator compartment preset temperature (step 242). And the refrigerator, the refrigerator compartment fan, and the freezer compartment fan when the refrigerator compartment temperature is less than or equal to the refrigerator compartment set temperature (step 240). The compressor and the freezer compartment fan of claim 3, wherein after the step 240, the surface temperature of the first cooler is determined to be higher than 0 ° C. (step 243), and when the surface temperature of the first cooler is 0 ° C. or less. Turning off the refrigerator compartment fan (step 244) to perform defrosting of the first cooler. The method of claim 1, wherein the freezing compartment temperature is higher than the freezer compartment reference temperature and the refrigerating compartment temperature is higher than the refrigerating compartment preset temperature, and thus, the first step of cooling the refrigerating compartment first is by comparing the freezer compartment temperature with the freezer compartment preset temperature (step 291). Refrigerator control method characterized in that performed when the temperature is higher than the set temperature. The method of claim 1, wherein the step of turning on the freezer compartment and the refrigerating compartment fan together with the compressor when the freezer compartment temperature is below the freezer compartment reference temperature or the refrigerator compartment temperature is below the refrigerator compartment set temperature, compares the temperature of the freezer compartment and the freezer compartment set temperature (step 231), by comparing the temperature of the refrigerating compartment and the refrigerating compartment set temperature (step 232), when the freezer compartment temperature is higher than the freezer compartment set temperature, and the refrigerator compartment temperature is higher than the refrigerator compartment set temperature. The method of claim 1, wherein the outside air reference temperature is 30 ~ 35 ℃. The method according to claim 1, wherein the refrigerating chamber preset temperature is 6 to -1 ° C, and the freezer compartment set temperature is -15 to -21 ° C. The method of claim 1, wherein the refrigerating compartment reference temperature is 7 to 15 ° C., and the freezer compartment reference temperature is −14 to −5 ° C. 7. In the control method of a refrigerator having a compressor, a mutually divided freezer compartment and a refrigerating compartment, and a first cooler and a refrigerating fan are installed in the refrigerating compartment, and a second cooler and a freezer compartment fan are installed in the freezer compartment. Compare the preset outside air reference temperature to the reference point of the state (step 351), and if the outside air temperature is higher than the outside air reference temperature in the step, the freezer compartment temperature and the freezer compartment set temperature, the refrigerator compartment temperature and the refrigerator compartment set temperature, the set temperature Cooling the chamber of higher temperature and comparing the outside air temperature with the outside air reference temperature, if the outside air temperature is less than the outside air reference temperature in step 351, a temperature higher than the freezer compartment temperature and the freezer setting temperature but capable of performing a basic freezer function Compare the preset freezer reference temperature with the fridge temperature higher than the fridge set temperature Only when the refrigerator compartment reference temperature is set to a temperature that can perform the function of the basic refrigerator compartment (step 352), if the freezer compartment temperature is higher than the freezer compartment reference temperature and the refrigerator compartment temperature is higher than the refrigerator compartment set temperature in the step (step 352) When both the freezer compartment and the refrigerating compartment fan are turned on together with the compressor, and the freezer compartment temperature is below the freezer compartment reference temperature or the refrigerating compartment temperature is below the refrigerator compartment set temperature in the step (step 352), both the freezer compartment and the refrigerator compartment fan together with the compressor. A control method of a refrigerator comprising the steps of turning on. The method of claim 10, wherein the outside air temperature is higher than the outside air reference temperature, and comparing the freezer compartment temperature with the freezer compartment set temperature, the refrigerator compartment temperature and the refrigerator compartment set temperature, and cooling the room having a temperature higher than the set temperature cloth, wherein the refrigerator compartment temperature is set in the refrigerator compartment And the freezer compartment temperature is higher than the freezer compartment set temperature when the freezer compartment temperature is lower than the freezer compartment temperature, thereby turning on the compressor and the freezer compartment fan and turning off the refrigerator compartment fan to cool the freezer compartment (step 257). The method of claim 10, wherein the outside air temperature is higher than the outside air reference temperature, and comparing the freezer compartment temperature with the freezer compartment set temperature, the refrigerator compartment temperature and the refrigerator compartment set temperature, and cooling the room at a temperature higher than the set temperature, wherein the freezer compartment temperature is set in the freezer compartment. And controlling the compressor, the freezer compartment fan, and the refrigerating compartment fan when the refrigerator compartment temperature is below the refrigerator temperature and the refrigerator compartment temperature is below the refrigerator compartment set temperature (step 258). The method of claim 12, wherein following step 258, it is determined whether the surface temperature of the first cooler is higher than 0 ° C, and when the surface temperature of the first cooler is 0 ° C or lower, the compressor and the freezer compartment fan are turned off and the The refrigerator control method of the refrigerator characterized in that the defrost of the first cooler by turning on the fan. The method of claim 10, wherein the outside air temperature is higher than the outside air reference temperature, and comparing the freezer compartment temperature with the freezer compartment set temperature, the refrigerating compartment temperature and the refrigerating compartment set temperature, and cooling the room having a temperature higher than the set temperature, the refrigerator compartment temperature is set in the refrigerator compartment And controlling the refrigerator, the freezer compartment fan, and the refrigerating compartment fan to cool both chambers when the freezer compartment temperature is higher than the freezer compartment temperature (step 254). The method of claim 10, wherein the outside air temperature is higher than the outside air reference temperature, and comparing the freezer compartment temperature with the freezer compartment set temperature, the refrigerating compartment temperature and the refrigerating compartment set temperature, and cooling the room having a temperature higher than the set temperature, the refrigerator compartment temperature is set in the refrigerator compartment When the temperature is higher than the temperature and the freezer compartment temperature is lower than the freezer compartment preset temperature, the compressor and the refrigerating compartment fan are turned on, and the freezer compartment fan is turned off to cool the refrigerating compartment (step 255). The method of claim 10, wherein the step of turning on any one of the freezer compartment and the refrigerating compartment fan together with the compressor because the freezer compartment temperature is higher than the freezer compartment reference temperature and the refrigerating compartment temperature is higher than the refrigerating compartment set temperature, first, comparing the freezer compartment temperature and the freezer compartment set temperature (Step 291), when the freezer compartment temperature is higher than the freezer compartment set temperature, the compressor and the refrigerator compartment fan are turned on and the freezer compartment fan is turned off to perform cooling of the refrigerator compartment (step 292). The method of claim 10, wherein the step of turning on the freezer compartment and the refrigerating compartment fan together with the compressor because the freezer compartment temperature is below the freezer compartment reference temperature or the refrigerator compartment temperature is below the refrigerator compartment set temperature, first, by comparing the temperature of the freezer compartment and the freezer compartment set temperature ( Step 231), comparing the temperature of the refrigerating compartment and the refrigerating compartment setting temperature (step 232), wherein the freezer compartment temperature is higher than the freezer compartment setting temperature and the refrigerating compartment temperature is higher than the refrigerating compartment setting temperature. 11. The method of claim 10, wherein the outside air reference temperature is 30 ~ 35 ℃ control method of the refrigerator. The method of claim 10, wherein the refrigerating chamber set temperature is 6 to -1 ° C, and the freezer compartment set temperature is -15 to -21 ° C. The method according to claim 10, wherein the refrigerating compartment reference temperature is 7 to 15 ° C, and the freezer compartment reference temperature is -14 to -5 ° C. In the control method of a refrigerator having a compressor, a mutually divided freezer compartment and a refrigerating compartment, and a first cooler and a refrigerating fan are installed in the refrigerating compartment, and a second cooler and a freezer compartment fan are installed in the freezer compartment. Compare the preset outside air reference temperature to the reference point of the state (step 351), when the outside air temperature is higher than the outside air reference temperature in the step, compare the freezer compartment temperature and the freezer compartment set temperature, and compare the refrigerator compartment temperature and the refrigerator compartment set temperature When the freezer compartment temperature is higher than the freezer compartment set point temperature and the temperature of the refrigerator compartment is higher than the refrigerator compartment set point temperature, the compressor and the refrigerator compartment fan are turned on and the freezer compartment fan is turned off to perform cooling of the refrigerator compartment, and comparing the outside air temperature with the outside air reference temperature. If the outside air temperature is lower than the outside air reference temperature at 351, it is higher than the freezer compartment temperature and the freezer compartment set temperature. However, by comparing the pre-set freezer reference temperature to a temperature that can perform the function of the basic freezer compartment, and compares the refrigerating compartment temperature and the preset refrigerating compartment reference temperature to a temperature that is higher than the refrigerating compartment set temperature but can perform the function of the basic refrigerator compartment ( Step 352), in the step (step 352), if the freezer compartment temperature is higher than the freezer compartment reference temperature and the freezer compartment temperature is higher than the refrigerating compartment set temperature, one of the freezer compartment and the refrigerating compartment fan is turned on together with the compressor. And controlling the freezer compartment and the refrigerator compartment fan together with the compressor when the freezer compartment temperature is below the freezer compartment reference temperature or the refrigerator compartment temperature is below the refrigerator compartment preset temperature. 22. The method of claim 21, wherein following the step of performing cooling of the refrigerating compartment when the outside air temperature is higher than the outside air reference temperature, the refrigerating fan is continuously checked when the refrigerating compartment temperature is lower than the refrigerating compartment setting temperature by continuously checking the refrigerating compartment temperature and the refrigerating compartment setting temperature. The control method of the refrigerator characterized in that to perform the freezer compartment cooling by turning off and freezing chamber fan with the compressor (step 274). 22. The method of claim 21, wherein during the freezing compartment cooling of the step 274, if the refrigerator compartment temperature and the refrigerator compartment set temperature are continuously checked and the refrigerator compartment temperature becomes higher than the refrigerator compartment set temperature, the refrigerator compartment fan is turned on to cool the refrigerator compartment together with the freezer compartment (step 276). Control method of a refrigerator, characterized in that. 22. The method of claim 21, wherein cooling the refrigerating chamber is performed when the outside air temperature is higher than the outside air reference temperature, and then comparing the freezer compartment temperature with the second freezer compartment set temperature higher than the freezer compartment set temperature (step 335). And when the freezer compartment temperature is higher than the second freezer compartment set temperature, turning on the compressor, the refrigerator compartment fan, and the freezer compartment fan (step 336). 25. The method of claim 24, wherein following step 336, the refrigerator compartment temperature and the refrigerator compartment set temperature are compared (step 337), and when the refrigerator compartment temperature is below the refrigerator compartment set temperature, the compressor and the freezer fan are turned on and the refrigerator compartment fan is turned off to cool only the freezer compartment. (Step 334), following the freezer compartment cooling step (Step 334), the freezer compartment temperature and the freezer compartment set temperature are compared (step 340), and the freezer compartment temperature and the refrigerator compartment set temperature (step 341), and the freezer compartment temperature is the freezer compartment set temperature. And if the refrigerator compartment temperature is higher than the refrigerator compartment set temperature, returning to the step of turning on the compressor, the freezer compartment fan and the refrigerator compartment fan (step 336). 22. The method of claim 21, wherein the step of turning on any one of the freezer compartment and the refrigerating compartment fan together with the compressor because the freezer compartment temperature is higher than the freezer compartment reference temperature and the refrigerating compartment temperature is higher than the refrigerator compartment preset temperature, first, comparing the freezer compartment temperature and the freezer compartment set temperature (Step 291), when the freezer compartment temperature is higher than the freezer compartment set temperature, the compressor and the refrigerator compartment fan are turned on and the freezer compartment fan is turned off (Step 292). The method of claim 21, wherein the step of turning on both the freezer compartment and the refrigerating compartment fan together with the compressor when the freezer compartment temperature is below the freezer compartment reference temperature or the refrigerator compartment temperature is below the refrigerator compartment set temperature, first, comparing the temperature of the freezer compartment and the freezer compartment set temperature (Step 231), and comparing the temperature of the refrigerator compartment and the refrigerator compartment set temperature (step 232), when the freezer compartment temperature is higher than the freezer compartment set temperature, the refrigerator compartment temperature is higher than the refrigerator compartment set temperature, the control method of the refrigerator . 22. The method of claim 21, wherein the outside air reference temperature is 30 ~ 35 ℃. 22. The method of claim 21, wherein the refrigerating chamber set temperature is 6 to -1 ° C, and the freezer set temperature is -15 to -21 ° C. 22. The method of claim 21, wherein the refrigerator compartment reference temperature is 7 ~ -15 ℃, the freezer compartment reference temperature is -14 ~ -5 ℃ the control method of the refrigerator.