KR20110072251A - Refrigerator and operation control method thereof - Google Patents

Abstract

PURPOSE: A refrigerator and a method of controlling the operation of the refrigerator are provided to reduce the imbalance of refrigerant and the imbalance of the heating value of a hot pipe according to the operation mode of a freezing cycle. CONSTITUTION: A refrigerator comprises a compressor, a condenser, a hot pipe, a first circulation path(35), a second circulation path(36), and a path change valve(34). The hot pipe is composed of a first hot pipe(32) and a second hot pipe(33). The first hot pipe is connected to the condenser and the entrance of the path change valve. The second hot pipe is connected to the exit of the path change valve. The first circulation path cools a refrigerating compartment. The second circulation path cools a freezing compartment.

Description

Refrigerator and its operation control method {REFRIGERATOR AND OPERATION CONTROL METHOD THEREOF}

The present invention relates to a refrigerator having a refrigerating cycle having an evaporator separately in a refrigerating compartment and a freezing compartment, and a method of controlling the operation thereof.

Generally, a refrigerator is a device for supplying low temperature cold air to a storage room where food is stored to keep food fresh at a low temperature. The refrigerator includes a freezer compartment for keeping the freezing temperature below the freezing temperature, and a refrigerating compartment for maintaining the temperature slightly above the freezing temperature. .

The cool air supplied to the inside of the refrigerator is generated by the heat exchange action of the refrigerant, and is continuously supplied to the inside of the refrigerator while repeatedly performing a cooling cycle of compression, condensation, expansion, and evaporation, and the supplied refrigerant is supplied to convection. It is evenly delivered to the inside of the refrigerator to be able to store the food in the refrigerator at a desired temperature.

During the refrigeration cycle, the refrigerator and freezer are equipped with an evaporator, and a 3-way valve is provided to selectively change the flow path of the refrigerant flowing out of the condenser into the evaporator of the refrigerator or freezer. A refrigerator controlling is disclosed.

On the other hand, in such a refrigerator, when the inside cold air and the outside hot air contact each other directly or indirectly, dew is formed around the inlet of the refrigerating compartment and the freezing compartment due to the temperature difference, and from the condenser of the cooling cycle to prevent such dew formation. A refrigerator is disclosed in which an extended hot pipe is installed around an inlet of a refrigerating compartment and a freezing compartment.

The hot pipe is a refrigerant flow path installed on the high pressure side, and is generally disposed over the circumference of the inlet of the refrigerating compartment and the freezer compartment on the upstream side of the 3-way valve, and the dew in the inlet of the freezer compartment and the refrigerating compartment due to the heat radiation of the high temperature refrigerant gas during operation of the compressor. Prevents condensation

In the case of a refrigeration cycle equipped with such a hot pipe, energy loss due to the heat dissipation amount imbalance and the refrigerant amount imbalance in the freezer compartment and the refrigerating compartment side hot pipe has become a major problem.

One aspect of the present invention provides a refrigerator capable of improving the cooling efficiency of the refrigerating compartment and the freezing compartment by reducing the amount of refrigerant imbalance in accordance with the operation mode of the refrigeration cycle.

In addition, another aspect of the present invention provides a refrigerator having a refrigerant circulation passage capable of reducing power dissipation unbalance in a hot pipe and thus reducing power consumption.

To this end, the refrigerator according to the embodiment of the present invention includes a refrigerator including a first circulation passage for cooling the compressor, a condenser, a hot pipe, a refrigerating compartment, a second circulation passage for cooling the freezing compartment, and a flow path switching valve for switching the circulation passage. The hot pipe may include a freezing compartment side first hot pipe and a refrigerating compartment side second hot pipe, and the freezing compartment side first hot pipe may be connected to an inlet of the condenser and the flow path switching valve. The hot pipe may be connected to one outlet of the flow path switching valve.

The second circulation passage may be connected to the other outlet of the flow path switching valve, and the second circulation passage may be connected to the compressor via a second expansion device through a freezing chamber side through a second expansion device.

In addition, the first circulation passage may be connected to the refrigerator compartment side second evaporator and the compressor via the refrigerator compartment side second hot pipe, the first expansion device, and the refrigerator compartment side first evaporator, and the third expansion device.

In addition, the first circulation passage may be connected to the refrigerator compartment side first evaporator and the compressor via the refrigerator compartment side second hot pipe and the first expansion device.

In addition, the flow path switching valve may include a three-way valve having one inlet connected to the outlet of the first hot pipe and two outlets respectively connected to the first circulation passage and the second circulation passage.

In the refrigerator according to another embodiment of the present invention, a refrigerator having a control unit for controlling a compressor, a condenser, a hot pipe, a first operation mode for cooling the refrigerator compartment and a second operation mode for cooling the freezer compartment, wherein the hot pipe is a refrigeration unit. The first hot pipe and the refrigerating chamber-side second hot pipe, and the control unit is operated in the second operation mode after the refrigerant exiting the condenser cools the freezer through the first hot pipe, The flow path of the refrigerant can be controlled to return to the compressor.

The controller may control the refrigerant to flow into the freezing compartment side first hot pipe and the refrigerating compartment side second hot pipe when the first operation mode is operated.

In the first operation mode, the controller cools the refrigerating compartment and the freezing compartment through the first hot pipe and the second hot pipe to cool the refrigerating compartment and the freezing compartment. Can be controlled.

The controller may control the flow path of the refrigerant to return the refrigerant to the compressor after the refrigerant leaving the condenser cools the refrigerator compartment through the first hot pipe and the second hot pipe in the first operation mode. have.

The operation control method of the refrigerator according to an embodiment of the present invention is a refrigerator operation control method of a refrigerator having a compressor, a condenser, a freezer compartment side first hot pipe, a refrigerating compartment side second hot pipe, a refrigerator compartment and a freezer compartment. If it is determined that the cooling of the freezer is necessary, and if it is determined that the cooling of the freezer, the refrigerant from the condenser after passing through the first hot pipe may cool the freezing compartment.

In addition, when it is determined that cooling of the refrigerating compartment is necessary, the refrigerating compartment may be cooled after passing the refrigerant from the condenser through the first hot pipe and the second hot pipe.

In addition, after the refrigerant cools the refrigerating compartment, the refrigerant may be returned to the compressor after cooling the freezing compartment.

The refrigerant may return to the compressor after cooling the refrigerating compartment.

As described above, the refrigerator and its operation control method according to an embodiment of the present invention can reduce the unbalance of the refrigerant amount and the heat generation amount of the hot pipe according to the operation mode of the refrigeration cycle, so that the energy efficiency of the refrigerator and its operation are improved. It is possible to provide a control method.

Hereinafter, with reference to the accompanying drawings, preferred embodiments according to the technical idea of the refrigerator of the present invention as described above are as follows.

Referring to FIG. 1, a refrigerator according to an exemplary embodiment of the present invention may include a main body 10 and a plurality of storage chambers 12 and 13 partitioned by partition walls 11.

The storage chambers 12 and 13 include a refrigerating chamber 12 that maintains a temperature slightly above the freezing temperature, and a freezing chamber 13 maintained below the freezing temperature. The storage chambers 12 and 13 have storage chambers 12 and 13. Evaporators 28 and 29 may be provided for heat exchange with internal air, respectively.

The evaporators 28 and 29 include a first evaporator 28 installed in the refrigerating compartment 12 and a second evaporator 29 installed in the freezing compartment 13, and each of the evaporators 28 and 29 includes respective storage compartments ( 12, 13) is connected to the refrigeration cycle to cool.

The refrigeration cycle includes a compressor 21 for compressing a gaseous refrigerant at a high temperature and high pressure, a condenser 22 for condensing the gaseous refrigerant compressed from the compressor 21 to a liquid state, and a liquefied refrigerant to a low temperature and low pressure state. An expansion device (24, 25) for converting (see Fig. 2) and evaporators (28, 29) for vaporizing the refrigerant liquefied at low temperature and low pressure to produce cold air, which are connected to each other by a refrigerant pipe (30) The phase change of the refrigerant is made to circulate.

The expansion device (24, 25) may be made of a capillary tube or expansion valve, the evaporator (28, 29) may be provided separately in each storage chamber (12, 13).

In addition, a refrigeration cycle is provided between the condenser 22 and the expansion device is provided between the dryer 26 for removing moisture contained in the refrigerant supplied from the condenser 22, and between the evaporators 28, 29 and the compressor 21. It may further include an accumulator 27 for suppressing the supply of the liquid refrigerant to the compressor 21.

On the other hand, the refrigerant pipe 30 connecting between the condenser 22 and the expansion device (24, 25) and the cluster pipe (31) and is bent and extended a plurality of times on the upper surface and both side walls of the main body 10 and Hot pipes 32 and 33 may be provided along the circumference of the front opening of the main body 10.

The hot pipes 32 and 33 extend from the condenser 22 and are buried along the opening circumference of the main body 10, and the main body 10 is caused by a temperature difference between the inside and the outside by heat radiation of the high temperature refrigerant flowing therein. The amount of heat dissipation on the high pressure side is increased while preventing dew condensation on the front surface.

The hot pipes 32 and 33 are formed around a first hot pipe 32 embedded around the opening of the main body 10 forming the freezing chamber 13 and an opening of the main body 10 forming the refrigerating chamber 12. It may include a buried second hot pipe (33).

On the other hand, in general, the hot pipe is connected to one refrigerant pipe, the inlet and the outlet of the hot pipe is connected to the outlet of the valve for controlling the refrigerant circulation toward the outlet of the high-pressure side refrigerant pipe and the refrigerating chamber or freezer compartment, respectively.

In this case, when the compressor is operating, a hot refrigerant always flows in the hot pipe, whereby the calorific value of the relatively low temperature refrigerator-side hot pipe is excessive, resulting in poor energy efficiency.

Therefore, in the present embodiment, it is installed on the second hot pipe inlet-side refrigerant circulation passage embedded around the opening of the main body forming the refrigerating chamber 12 so as to prevent the energy efficiency of the refrigerator due to excessive heat generation amount of the hot pipe. It may include a flow path switching valve.

Hereinafter, a refrigerant circulation passage according to a refrigeration cycle structure of the embodiments of the present invention will be described. Figure 2 schematically shows the structure of the refrigeration cycle of the first embodiment of the present invention. The refrigerating cycle structure according to the first embodiment includes a first evaporator for generating cold air in the refrigerating compartment and a second evaporator for generating freezer cold air in series.

As shown in FIG. 2, in the refrigerating cycle 20 according to the first embodiment of the present invention, a condenser 22 is connected to the high pressure side discharge port of the compressor 21, and an inlet of the freezing chamber 13 is connected to the outlet of the condenser 22. The first hot pipe 32 embedded in the circumference is connected.

A flow path switching valve 34 is connected to the outlet of the first hot pipe 32. The flow path switching valve 34 may be constituted by a 3-way valve having one inlet and two outlets, and the two outlets may respectively include a first circulation passage 35 and a second circulation passage 36. Can be connected to.

The flow path switching valve 34 may be any one of the two outlets can be selectively opened or bidirectional open and bidirectional closed.

A second hot pipe 33 embedded around the inlet of the refrigerating chamber 12 is connected to an outlet of the flow path switching valve 34 connected to the first circulation passage 35, and a refrigerating chamber to the outlet of the second hot pipe 33. An expansion device (hereinafter referred to as a first expansion device) 24 and a first evaporator 28 are connected in this order.

 A freezer compartment expansion device (hereinafter referred to as a second expansion device) and a second evaporator 29 are sequentially connected to an outlet of the flow path switching valve 34 connected to the second circulation flow path 36, and the second evaporator 29 ) Is connected to the compressor (21) via a suction pipe (37).

In addition, between the outlet of the first evaporator 28 and the inlet of the second evaporator 29 are connected in series with each other via a connecting refrigerant pipe 38, and in the path of the connecting refrigerant pipe 38, a third expansion device 39 is provided. Is installed.

Hereinafter will be described the operation state and effect of the refrigeration cycle of the first embodiment of the present invention.

The refrigerating cycle according to the first embodiment of the present invention has a first operation mode for simultaneously cooling the refrigerating compartment 12 and the freezing compartment 13, a second operation mode for cooling the freezing compartment 13 alone, and a first operation mode. And a controller (not shown) for controlling the second driving mode.

The control unit may include a microprocessor, a microcontroller, and the like including a CPU that performs at least one computer command to control the operation of each part of the refrigerator according to a user's setting operation or a preset program.

As shown in FIG. 2, in the first operation mode, the refrigerant compressed and discharged by the compressor 21 flows into the condenser 22, and the refrigerant condensed in the condenser 22 is the first hot pipe 32. It passes through and flows to the flow path switching valve (34).

At this time, the flow path switching valve 34 is in a state in which only the first circulation flow path 35 is opened by the controller, and the refrigerant introduced into the flow path switching valve 34 is the second hot pipe 33 and the first expansion device. It is introduced into the first evaporator 28 through 24 to cool the refrigerating compartment 12.

The refrigerant discharged from the first evaporator 28 flows into the second evaporator 29 through the third expansion device 39 to cool the freezer compartment 13, and the refrigerant discharged from the second evaporator 29 is suction pipe. It returns to the compressor 21 via 37 back.

As shown in FIG. 3, in the second operation mode, the refrigerant compressed and discharged by the compressor 21 flows into the condenser 22, and the refrigerant condensed in the condenser 22 is the first hot pipe 32. It passes through and flows to the flow path switching valve (34).

At this time, since the flow path switching valve 34 is in a state in which only the second circulation path 36 is opened by the controller (not shown), the refrigerant introduced into the flow path switching valve 34 is the second expansion device 25. The freezing chamber 13 is cooled through the second evaporator 29, and the refrigerant discharged from the second evaporator 29 is returned to the compressor 21 through the suction pipe 37.

That is, the controller determines whether cooling of the refrigerating chamber 12 or the freezing chamber 13 is necessary, and when it is determined that cooling of the freezing chamber 13 is necessary, only the second circulation passage 36 of the flow path switching valve 34 is opened. After the refrigerant discharged from the condenser 22 passes through the first hot pipe 32, the freezing chamber 13 is cooled, and if it is determined that cooling of the refrigerating chamber 12 is necessary, the first circulation passage of the flow path switching valve 34 is performed. By opening only 35, the refrigerant discharged from the condenser 22 is cooled through the first hot pipe 32 and the second hot pipe 33 to cool the refrigerating chamber 12.

On the other hand, the optimum amount of refrigerant charged in the refrigerating cycle is different depending on the refrigerating or freezing operation, but in general, the medium of the optimum amount of the refrigerant required for refrigerating or freezing operation is filled in the refrigerating cycle.

For this reason, overcharging of the coolant occurs in either of the refrigerating or freezing operation, and shortage of the coolant occurs in the other operation mode.

That is, in the refrigerating operation, the overcharging of the refrigerant occurs, and in the freezing operation, since the amount of the refrigerant is insufficient, the energy loss due to the unbalance of the refrigerant amount may occur. However, in the case of the refrigeration cycles of the present embodiment it is possible to minimize this energy loss.

Referring to FIG. 2, in the first operation mode of the refrigerating cycle, overcharging of the refrigerant into which the amount of refrigerant exceeding the optimum amount of refrigerant flowing into the first evaporator 28 occurs is caused, but the second hot pipe 33 As the coolant flows through), it is possible to prevent overcharging of the coolant flowing into the first evaporator 28.

Referring to FIG. 3, in the second operation mode of the refrigeration cycle, the amount of refrigerant that is less than the optimal amount of refrigerant flowing into the second evaporator 29 is introduced, but the refrigerant does not flow to the second hot pipe 33. Therefore, it is possible to prevent the amount of the refrigerant from being shorter relative to the consumption of the amount of the refrigerant flowing in the second hot pipe 33.

Therefore, in the case of the configuration in which the refrigerant flows in both the first hot pipe 32 and the second hot pipe 33 while the conventional compressor 21 is operating, a decrease in energy efficiency occurs due to the unbalance of the refrigerant. In the embodiment, such a refrigerant amount imbalance can be relatively reduced, thereby improving refrigerator energy efficiency.

In addition, since the amount of heat required to prevent dew condensation is generally designed based on the first hot pipe 32 on the freezing compartment 13 side, excessive heat generation occurs in the second hot pipe 33 on the refrigerating compartment 12 side. By increasing the heat load of the refrigerator more than necessary, the heat generation amount of the second hot pipe 33 of the refrigerating cycle of the present embodiment is relatively reduced compared to the heat generation amount of the first hot pipe 32, thereby increasing the heat load due to excessive heat generation. By preventing the energy efficiency of the refrigerator can be increased.

Figure 4 schematically shows a refrigeration cycle structure of a second embodiment of the present invention

Hereinafter, the same reference numerals are assigned to components that perform the same function, and detailed description thereof will be omitted.

In the structure of the refrigerating cycle according to the second embodiment of the present invention, the first evaporator for generating cold air in the refrigerating compartment and the second evaporator for generating freezer cold air may be arranged in parallel with the first embodiment.

As shown in FIG. 4, in the refrigerating cycle 40 of the second embodiment of the present invention, a condenser 22 is connected to the high pressure side discharge port of the compressor 21, and an inlet of the freezing chamber 13 is connected to the outlet of the condenser 22. The first hot pipe 32 embedded in the circumference is connected.

A flow path switching valve 34 is connected to the outlet of the first hot pipe 32. The flow path switching valve 34 may be constituted by a 3-way valve having one inlet and two outlets, and the two outlets may respectively include the first circulation passage 41 and the freezing chamber side of the refrigerating chamber 12. It may be connected to the second circulation passage 42.

A second hot pipe 33 embedded around the inlet of the refrigerating chamber 12 is connected to an outlet of the flow path switching valve 34 connected to the first circulation passage 41, and a refrigerating chamber to the outlet of the second hot pipe 33. An expansion device (hereinafter referred to as a first expansion device) 24 and a first evaporator 28 are connected in this order.

Referring to FIG. 4, the outlet of the flow path switching valve 34 connected to the first circulation passage 41 is the second hot pipe 33, the first expansion device 24, the first evaporator 28, and the suction pipe. The outlet of the flow path switching valve 34 connected in order with the second circulation passage 42 and the second circulation passage 42 is connected with the second expansion device 25, the second evaporator 29, and the suction pipe 37. Is connected.

The outlet of the first evaporator 28 is connected to the first discharge refrigerant pipe 43, which is the discharge passage of the refrigerating chamber 12, and the outlet of the second evaporator 29, the second discharge refrigerant which is the discharge passage of the freezing chamber 13; Is connected to the tube 44.

The refrigerant discharged through the first discharge refrigerant pipe 43 and the second discharge refrigerant pipe 44 are merged before entering the compressor 21, and from the joined point, the refrigerant 21 is connected to the compressor 21 through the suction pipe 37. It is connected to the entrance.

A check valve 45 is installed in the path of the second discharge refrigerant pipe 44 to prevent the refrigerant on the side of the first discharge refrigerant pipe 43 from flowing back.

Hereinafter will be described the operation state and effect of the refrigeration cycle of the second embodiment of the present invention.

The refrigeration cycle according to the second embodiment of the present invention includes a first operation mode for operating the refrigerating chamber 12, a second operation mode for operating the freezing chamber 13, and a control unit for controlling the first operation mode and the second operation mode. It may include.

As shown in FIG. 4, in the first operation mode, the refrigerant compressed and discharged by the compressor 21 flows into the condenser 22, and the refrigerant condensed in the condenser 22 is the first hot pipe 32. It passes through and flows to the flow path switching valve (34).

At this time, the flow path switching valve 34 is in a state in which only the first circulation path 41 is opened by the controller, and the refrigerant introduced into the flow path switching valve 34 is the second hot pipe 33 and the first expansion device. 24 and the first evaporator 28 flow in order and then return to the compressor 21 through the suction pipe 37.

As a result, in the case of the refrigerating cycle in which the refrigerant amount filled with a relatively larger amount of refrigerant than the optimum amount of refrigerant required for the first evaporator 28 is consumed, the amount of refrigerant passing through the second hot pipe 33 is consumed. It is possible to prevent the overcharge of the amount of refrigerant flowing into the side.

In addition, the calorific value of the second hot pipe 33 is reduced relative to the calorific value of the first hot pipe 32, thereby preventing an increase in heat load due to excessive heat generation of the second hot pipe 33.

As illustrated in FIG. 5, in the second operation mode, the refrigerant compressed and discharged by the compressor 21 flows into the condenser 22, and the refrigerant condensed in the condenser 22 is the first hot pipe 32. It passes through and flows to the flow path switching valve (34).

At this time, the flow path switching valve 34 is in a state in which only the second circulation flow path 42 is opened by the controller, and the refrigerant flowing into the flow path switching valve 34 is the second expansion device 25 and the second evaporator ( 29 is flowed in order and then returned to the compressor 21 through the suction pipe 37.

As a result, in the case of the refrigeration cycle in which the amount of refrigerant relatively smaller than the optimal amount of refrigerant required for the second evaporator 29 is filled, the amount of refrigerant consumed by the amount passing through the second hot pipe 33 may be reduced, thereby reducing the amount of the second evaporator ( It is possible to prevent the lack of the amount of refrigerant flowing into the 29) side.

Therefore, in the case of the refrigeration cycle having the refrigerant flow path of the present embodiment it is possible to reduce the unbalance of the amount of refrigerant according to the operating mode and the unbalance of the calorific value of the hot pipes (32, 33) can improve the energy efficiency of the refrigerator.

1 is a perspective view schematically showing the structure of a refrigeration cycle disposed inside a refrigerator according to an embodiment of the present invention.

Figure 2 shows the operating state of the first operation mode of the refrigeration cycle according to the first embodiment of the present invention.

Figure 3 shows the operating state of the second operation mode of the refrigeration cycle according to the first embodiment of the present invention.

Figure 4 shows the operating state of the first operation mode of the refrigeration cycle according to the second embodiment of the present invention.

Figure 5 shows the operating state of the second operation mode of the refrigeration cycle according to the second embodiment of the present invention.

Explanation of symbols on the main parts of the drawings

10: main body, 12: refrigerator compartment,

13: freezer, 28: first evaporator,

29: second evaporator, 32: first hotpipe,

33: second hot pipe, 34: flow path switching valve,

35,41: first circulation euro, 36,42: second circulation euro.

Claims (13)

A refrigerator comprising a first circulation passage for cooling a compressor, a condenser, a hot pipe, a refrigerating compartment, a second circulation passage for cooling a freezing compartment, and a flow path switching valve for switching the circulation passage, The hot pipe is composed of a freezer compartment first hot pipe and a refrigerating compartment second hot pipe, The freezing chamber side first hot pipe is connected to the inlet of the condenser and the flow path switching valve, The refrigerator compartment side is characterized in that the second hot pipe is connected to one outlet of the flow path switching valve. The method of claim 1, The second circulation path is connected to the other outlet of the flow path switching valve, The second circulation passage is connected to the compressor via a second expansion device via a second evaporator in the freezer compartment. The method of claim 1, The first circulation passage is connected to the refrigerator compartment side second evaporator and the compressor through the refrigerator compartment side second hot pipe, the first expansion device, and the refrigerator compartment side first evaporator, and the third expansion device. The method of claim 1, The first circulation passage is connected to the refrigerator compartment side first evaporator and the compressor via the refrigerator compartment side second hot pipe and the first expansion device. The method of claim 1, The flow path switching valve comprises a three-way valve having one inlet connected to the outlet of the first hot pipe and two outlets respectively connected to the first circulation passage and the second circulation passage. A refrigerator comprising a control unit for controlling a compressor, a condenser, a hot pipe, a first operation mode for cooling a refrigerating compartment and a second operation mode for cooling a freezing compartment, The hot pipe is composed of a freezer compartment first hot pipe and a refrigerating compartment second hot pipe, And the control unit controls the flow path of the refrigerant to return to the compressor after the refrigerant leaving the condenser cools the freezer through the first hot pipe when the second operation mode is operated. The method of claim 6, The control unit controls the refrigerant to flow in the freezing compartment side first hot pipe and the refrigerating compartment side second hot pipe when operating in the first operation mode. The method of claim 6, The control unit controls the flow path of the refrigerant to return to the compressor after the refrigerant exiting the condenser cools the refrigerating compartment and the freezing compartment via the first hot pipe and the second hot pipe in the first operation mode. Refrigerator, characterized in that. The method of claim 6, The controller controls the flow path of the refrigerant to return to the compressor after the refrigerant leaving the condenser cools the refrigerator compartment through the first hot pipe and the second hot pipe in the first operation mode. Refrigerator. In the operation control method of the refrigerator having a compressor, a condenser, a freezer compartment first hot pipe, a refrigerating compartment second hot pipe, a refrigerating compartment and a freezing compartment, It is determined whether cooling of the refrigerating compartment or the freezing compartment is necessary, And if it is determined that cooling of the freezing compartment is necessary, cooling the freezing compartment after passing the refrigerant from the condenser through the first hot pipe. The method of claim 10, And if it is determined that cooling of the refrigerating compartment is necessary, the operation control method of the refrigerator for cooling the refrigerating compartment after passing the refrigerant from the condenser through the first hot pipe and the second hot pipe. The method of claim 11, And after the refrigerant cools the refrigerating compartment, the refrigerant returns to the compressor after cooling the freezing compartment. The method of claim 11, And the refrigerant returns to the compressor after cooling the refrigerating compartment.

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