KR102151817B1 - Refrigerator and method for controlling the same - Google Patents

Abstract

The refrigerator of the present invention includes a freezer compressor and a first condenser, a refrigeration cycle operating for cooling of the freezer compartment, and a refrigeration cycle operating for cooling the refrigerating compartment, A condenser fan for flowing air to exchange heat with the first and second condensers; And a controller for controlling each of the compressor and condenser fans.
In this case, the control unit controls the rotation speed of the condenser fan so that the rotation speed of the condenser fan when the refrigeration cycle operates is higher than the rotation speed of the condenser fan when the refrigeration cycle operates.

Description

Refrigerator and method for controlling the same}

The present invention relates to a refrigerator and a control method thereof.

A refrigerator is a household appliance that stores food at a low temperature, and it is essential to keep the storage room at a constant low temperature. Currently, in the case of household refrigerators, the storage compartment is maintained at a temperature within the upper and lower limits based on the set temperature. That is, the refrigerator is controlled by driving a refrigeration cycle to cool the storage compartment when the storage compartment temperature rises to the upper limit temperature, and stopping the refrigeration cycle when the storage compartment temperature reaches the lower limit temperature.

In recent years, refrigerators in which an evaporator and an expansion device are respectively installed in a freezing chamber and a refrigerating chamber have been developed. The refrigerator controls each expansion device to control the amount of refrigerant supplied from the compressor to each evaporator, thereby maintaining the internal temperatures of the freezing and refrigerating chambers at the refrigerating temperature and freezing temperature, respectively.

A refrigerator is disclosed in Korean Unexamined Patent Publication No. 10-2016-0097653 (published date 2016.08.18), which is a prior document.

The refrigerator of the prior literature includes a cabinet having a machine room, and the machine room is provided with a first compressor, a second compressor, a first condenser, a second condenser, and a cooling fan. And, each refrigerant pipe of the first condenser and the second condenser is arranged to share a cooling fin. That is, a pin sharing condenser is placed in the machine room. In addition, a first compressor, a fin sharing condenser, a cooling fan, and a second compressor are sequentially arranged.

When there are two compressors in the machine room as in the prior literature, the space in the machine room is insufficient, and thus the first condenser and the second condenser cannot be formed in the same size as the condenser when using one compressor. Accordingly, the entire fin-sharing condenser may be the same as or smaller than the size of the condenser when using one compressor, and accordingly, the size of each of the first condenser and the second condenser is larger than the size of the condenser when using one compressor. small.

Therefore, there is a problem in that the heat dissipation performance of the condenser is deteriorated due to the existence of two condensers, but their size is reduced.

In addition, since one cooling fan is used to flow air, the evaporation temperature of the evaporator for the freezing compartment is relatively low when the first cooling cycle for cooling the freezer compartment is operated for the refrigerating compartment when the second cooling cycle for cooling the refrigerator compartment is operated. Since the temperature of the evaporator is lower than the temperature of the evaporator, when the cooling fan is rotated at a constant speed regardless of which cooling cycle is operated, there is a problem that unnecessary power consumption occurs when the second cooling cycle is operated.

An object of the present invention is to provide a refrigerator and a control method thereof in which cooling efficiency is improved by lowering the condensing temperature of a condenser when cooling a refrigerator compartment.

In addition, an object of the present invention is to provide a refrigerator and a control method thereof capable of reducing power consumption of a condenser fan during cooling of a freezer compartment.

The refrigerator of the present invention for achieving the above object includes a compressor for a freezing chamber and a first condenser, a refrigeration cycle that operates for cooling the freezing chamber, and a compressor and a second condenser for the refrigerating chamber, and cooling of the refrigerating chamber A refrigeration cycle that operates for and a condenser fan for flowing air to heat exchange air with the first and second condensers; And a controller for controlling each of the compressor and condenser fans.

In this case, the control unit controls the rotation speed of the condenser fan so that the rotation speed of the condenser fan when the refrigeration cycle operates is higher than the rotation speed of the condenser fan when the refrigeration cycle operates.

The control unit controls to maintain a state in which the condenser fan is rotated at a reference rotation speed of the refrigerator compartment when the refrigeration cycle is operated. In addition, when the refrigeration cycle is operated, the condenser fan is controlled to be rotated at a lower rotational speed of the freezing compartment than the reference rotational speed of the refrigerating compartment.

Alternatively, when the refrigeration cycle is operated, the control unit may vary the rotation speed of the condenser fan.

When the temperature of the refrigerating compartment sensed by the refrigerating compartment temperature sensor is equal to or higher than the reference temperature of the refrigerating compartment, the control unit causes the condenser fan to rotate at the reference rotational speed of the first refrigerating compartment.

When the detected temperature of the refrigerating compartment is less than the refrigerating compartment reference temperature, the control unit controls the condenser fan to rotate at a second refrigerating compartment reference rotation speed that is slower than the first refrigerating compartment reference rotation speed.

The refrigerating compartment reference temperature may be a target temperature of the refrigerating compartment input through an input unit.

When the refrigeration cycle is operated, the control unit may vary the rotation speed of the condenser fan.

When the temperature of the freezing compartment sensed by the freezing compartment temperature sensor is equal to or higher than the freezing compartment reference temperature, the control unit causes the condenser fan to rotate at the reference rotational speed of the first freezing compartment.

When the detected temperature of the refrigerating chamber is less than the freezing chamber reference temperature, the control unit controls the condenser fan to rotate at a second freezing chamber reference rotation speed that is slower than the first freezing chamber reference rotation speed.

The freezing chamber reference temperature may be a target temperature of the freezing chamber input through an input unit.

The condensation capacity of the first condenser may be larger than that of the second condenser.

A method of controlling a refrigerator according to another aspect includes the steps of operating a refrigeration cycle to cool a freezer and rotating a condenser fan at a reference rotational speed of the freezer; Determining whether a stop condition of the refrigeration cycle is satisfied; If the stopping condition of the refrigeration cycle is satisfied, stopping the refrigeration cycle, operating the refrigerating cycle to cool the refrigerating compartment, and rotating the condenser fan at a reference rotation speed of the refrigerator compartment faster than the reference rotation speed of the freezing compartment.

During the refrigeration cycle, the reference rotation speed of the freezing compartment may be reduced.

While the refrigeration cycle is operating, the reference rotational speed of the refrigerating compartment may be reduced.

According to the proposed invention, since the speed of the condenser fan when the refrigeration cycle is operated is higher than when the refrigeration cycle is operated, the condensation temperature of the condenser when the refrigeration cycle is operated is reduced, thereby improving cooling efficiency. .

In addition, there is an advantage of lowering the power consumption of the condenser fan by reducing the rotational speed of the fan of the condenser according to the freezing chamber temperature and the refrigerating chamber temperature during each operation of the refrigeration cycle and the refrigeration cycle.

1 is a diagram schematically showing the configuration of a refrigerator according to an embodiment of the present invention.
Figure 2 is a block diagram of the refrigerator of the present invention.
3 is a view showing a machine room according to an embodiment of the present invention.
4 is a flowchart illustrating a method of controlling a refrigerator according to the present invention.

Hereinafter, some embodiments of the present invention will be described in detail through exemplary drawings. In adding reference numerals to elements of each drawing, it should be noted that the same elements are assigned the same numerals as possible even if they are indicated on different drawings. In addition, in describing an embodiment of the present invention, if it is determined that a detailed description of a related known configuration or function interferes with the understanding of the embodiment of the present invention, the detailed description thereof will be omitted.

In addition, in describing the constituent elements of the embodiment of the present invention, terms such as first, second, A, B, (a), (b) may be used. These terms are only used to distinguish the component from other components, and the nature, order, or order of the component is not limited by the term. When a component is described as being "connected", "coupled" or "connected" to another component, that component may be directly connected or connected to that other component, but another component between each component It should be understood that may be “connected”, “coupled” or “connected”.

1 is a view schematically showing the configuration of a refrigerator according to an embodiment of the present invention, FIG. 2 is a block diagram of the refrigerator of the present invention, and FIG. 3 is a view showing a machine room according to an embodiment of the present invention.

1 to 3, the refrigerator 1 according to the present invention includes a cabinet 10 in which a freezing chamber 111 and a refrigerating chamber 112 are formed, and the freezing chamber ( A door (not shown) for opening and closing each of the 111 and the refrigerating chamber 112 may be included.

The freezing chamber 111 and the refrigerating chamber 112 may be divided in a left-right direction or an up-down direction inside the cabinet 10 by a partition wall 113.

In addition, the refrigerator 1 may include a cooling cycle for cooling the freezing chamber 111 and the refrigerating chamber 112, respectively.

The cooling cycle may include a refrigeration cycle for cooling the freezing chamber 111 and a refrigeration cycle for cooling the refrigerating chamber 112.

The refrigeration cycle includes a compressor 11 (or a first compressor) for a freezing compartment, a condenser 13, a first expansion member 14, a first evaporator 16, and a freezing compartment fan 18. I can. The freezing compartment fan 18 may blow air toward the first evaporator 16 to circulate cool air in the freezing compartment 111.

The refrigeration cycle includes a compressor 12 (or a second compressor) for a refrigerator compartment, a condenser 13, a second expansion member 15, a second evaporator 17, and a refrigerator compartment fan 19. I can. The refrigerating compartment fan 19 may blow air toward the second evaporator 17 to circulate the cool air in the refrigerating compartment 112.

In this case, the condenser 13 may constitute one heat exchanger, and may be divided into two parts to allow the refrigerant to flow. That is, the refrigerant discharged from the first compressor 11 may flow through the first portion 131 of the condenser 13, and the refrigerant discharged from the second compressor 12 is the second of the condenser 13 Portion 132 may flow. Accordingly, the first portion 131 may be referred to as a first condenser, and the second portion 132 may be referred to as a second condenser.

In this case, the condensation capacity of the first condenser may be designed to be larger than that of the second condenser. That is, the size of the first part 131 in the condenser 13 is larger than the size of the second part 132. In addition, the evaporation capacity of the first evaporator 16 may be designed to be larger than that of the second evaporator 17.

A machine room 114 may be provided on the rear side of the refrigerator 1, and the machine room 114 includes a compressor 11 for a freezing room, a compressor 12 for a refrigeration room, a condenser 13 and a condenser fan 20 Can be.

The condenser fan 20 flows air so that the first condenser and the second condenser exchange heat with the air.

In the machine room 114, the compressor 11 for the freezing compartment and the compressor 12 for the refrigerating compartment may be disposed to be spaced apart in a horizontal direction. In addition, a condenser 13 may be positioned between the compressor 11 for a refrigerating chamber and the compressor 12 for a freezing chamber. In addition, the condenser fan 20 may be positioned between the condenser 13 and the compressor 11 for the freezing chamber.

In the condenser 13, a first part 131 may be located adjacent to the compressor 11 for a freezing compartment, and the second part 132 may be located adjacent to the compressor 12 for a refrigerator compartment.

Accordingly, when the condenser fan 20 is operated (rotated), air outside the refrigerator 1 flows into the machine room 114 through the machine room entrance (not shown). The air introduced into the machine room 114 flows along the outer surface of the compressor 12 for the refrigerating chamber, and then passes through the second portion 132 and the first portion 131 of the condenser 13 in sequence. In addition, the air passing through the condenser 13 passes through the condenser fan 20 and flows along the outer surface of the compressor 11 for the freezing chamber, and then goes to the outside of the machine room 114 through the machine room outlet (not shown). Can be discharged.

As another example, the first part 131 and the second part 132 of the condenser 13 may be disposed so that the positions of the first part 131 and the second part 132 are opposite. That is, the air introduced into the machine room 114 flows along the outer surface of the compressor 12 for the refrigerating room, and then passes through the first part 131 and the second part 132 of the condenser 13 in sequence. It is also possible to do.

The refrigerator 1 includes a freezing chamber temperature sensor 31 (or a first temperature sensor) for sensing the temperature of the freezing chamber 111 and a freezing chamber temperature sensor 32 for sensing the temperature of the refrigerating chamber 112 (Or a second temperature sensor), an input unit 33 capable of inputting a target temperature (or desired temperature) of each of the freezing compartment 111 and the refrigerating compartment 112, and the input target temperature and temperature sensors 31 and 33 ) May include a control unit 30 for controlling the cooling cycle based on the temperature sensed.

In the present specification, a temperature lower than the target temperature of the freezing compartment 111 may be referred to as a first freezing compartment reference temperature, and a temperature higher than the target temperature of the freezing compartment 111 may be referred to as a second freezing compartment reference temperature. In addition, a range between the first and second freezing compartment reference temperatures may be referred to as a freezing compartment set temperature range.

Although not limited, the target temperature of the freezing chamber 111 may be an average temperature of the first freezing chamber reference temperature and the second freezing chamber reference temperature.

Further, in the present specification, a temperature lower than the target temperature of the refrigerating compartment 112 may be referred to as a first refrigerating compartment reference temperature, and a temperature higher than the target temperature of the refrigerating compartment 112 may be referred to as a second refrigerating compartment reference temperature. In addition, a range between the first and second refrigerating compartment reference temperatures may be referred to as a refrigerating compartment set temperature range.

Although not limited, the target temperature of the refrigerating compartment 112 may be an average temperature between the first and second refrigerating compartment reference temperatures.

In the present invention, the controller 30 may control the temperature of the refrigerating chamber 112 to be maintained within the set temperature range.

In the present invention, the controller 30 operates the refrigeration cycle when the sensed refrigerating compartment temperature is higher than or equal to the second refrigerating compartment reference temperature, and stops the refrigerating cycle when the sensed refrigerating compartment temperature is less than the first refrigerating compartment reference temperature.

In addition, in the present invention, the refrigeration cycle and the refrigeration cycle may alternately operate. That is, when the refrigeration cycle is operated, the refrigeration cycle is stopped, and when the refrigeration cycle is stopped, the refrigeration cycle may be operated.

Hereinafter, a method for controlling a refrigerator according to the present invention will be described.

4 is a flowchart illustrating a method of controlling a refrigerator according to the present invention.

1 to 4, the refrigerator is turned on (S1). When the refrigerator is turned on, it is determined whether the operating condition of the refrigeration cycle is satisfied (S2). Conversely, when the refrigerator is turned on, it is possible to first determine whether the operating condition of the refrigeration cycle is satisfied.

In the present specification, since the refrigeration cycle and the refrigeration cycle operate alternately, when the operating condition of the refrigeration cycle is not satisfied, it is assumed that the operating condition of the refrigeration cycle is satisfied.

As described above, when the operating condition of the refrigeration cycle is satisfied, the refrigerating compartment temperature sensed by the refrigerating compartment temperature sensor 32 is equal to or higher than the second refrigerating compartment reference temperature.

As a result of the determination in step S4, if it is determined that the operating condition of the refrigeration cycle is satisfied, the control unit 30 operates the refrigeration cycle.

That is, the control unit 30 turns on the refrigerating compartment compressor 12 and turns on the refrigerating compartment fan 19 (S3). In addition, the control unit 30 turns on the condenser fan 20 (S3). At this time, the freezing compartment compressor 11 and the freezing compartment fan 18 are stopped.

During the refrigeration cycle, the temperature of the refrigerator compartment 112 is periodically sensed by the refrigerator compartment temperature sensor 32.

The control unit 30 determines whether or not the sensed refrigerating chamber temperature is higher than the target temperature of the refrigerating chamber 112 (S4).

As a result of the determination in step S4, if it is determined that the detected refrigerating chamber temperature is higher than the target temperature of the refrigerating chamber 112, the control unit 30 controls the condenser fan 20 to rotate at the first refrigerating chamber reference rotational speed (RPM). Do (S5).

In general, at the start of the operation of the refrigeration cycle, the sensed refrigerating chamber temperature will be higher than the target temperature of the refrigerating chamber 112, so that the controller 30 moves the condenser fan 20 at the first refrigerating chamber reference rotational speed (RPM). Can be rotated. And, the control unit 30 controls the rotational speed of the condenser fan 20 to be maintained at the first refrigerating compartment reference rotational speed (RPM) until the sensed refrigerating compartment temperature reaches the target temperature of the refrigerating compartment 112 can do.

On the other hand, as a result of determination in step S5, if the detected refrigerating chamber temperature is less than the target temperature of the refrigerating chamber 112, the controller 30 causes the condenser fan 20 to rotate at the second refrigerating chamber reference rotational speed (RPM). Control (S6). In this case, the first refrigerating compartment reference rotation speed (RPM) is higher than the second refrigerating compartment reference rotation speed (RPM).

That is, when the detected refrigerating compartment temperature is higher than or equal to the target temperature of the refrigerating compartment 112, the detected refrigerating compartment temperature is less than the target temperature of the refrigerating compartment 112. The rotation of the condenser fan 20 is controlled to be faster than the rotational speed of the condenser fan 20. Accordingly, the rotational speed of the condenser fan 20 decreases during the operation of the refrigeration cycle.

In contrast, in order to determine the time point at which the rotational speed of the condenser fan 20 is varied, it is possible to compare the reference temperature of the refrigerating compartment and the sensed refrigerating compartment temperature previously set for the speed change. Depending on the temperature setting, the reference temperature of the refrigerating compartment may be the same as or different from the target temperature of the refrigerating compartment 112 input by the input unit 33.

The technical significance of varying the rotational speed of the condenser fan 20 in the present invention will be described later.

While the refrigeration cycle is operating, the control unit 30 may determine whether or not a condition for stopping the refrigeration cycle is satisfied (S7).

As described above, a case in which the condition for stopping the refrigeration cycle is satisfied is a case in which the temperature of the refrigerator compartment reaches the reference temperature of the first refrigerator compartment.

As a result of the determination in step S7, if it is determined that the stopping condition of the refrigeration cycle is satisfied, the control unit 30 stops the refrigeration cycle (S8). In addition, the control unit 30 operates the refrigeration cycle.

That is, the control unit 30 stops the refrigerator compartment compressor 12 and the refrigerator compartment fan 19 and turns on the freezing compartment compressor 11 and the freezing compartment fan 18 (S9). In addition, the control unit 30 maintains the on state of the condenser fan 20 (S9).

In this case, the control unit 30 may rotate the condenser fan 20 at a different rotational speed than the rotational speed of the condenser fan 20 when the refrigeration cycle operates.

During the refrigeration cycle, the temperature of the freezing chamber 111 is periodically sensed by the freezing chamber temperature sensor 31.

The controller 30 determines whether or not the detected freezing chamber temperature is higher than the target temperature of the freezing chamber 111 (S10).

As a result of the determination in step S10, if it is determined that the detected freezing chamber temperature is equal to or higher than the target temperature of the freezing chamber 111, the controller 30 causes the condenser fan 20 to rotate at a first freezing chamber reference rotational speed (RPM). Control (S11).

In general, since the detected freezing chamber temperature will be higher than the target temperature of the freezing chamber at the start of the operation of the refrigeration cycle, the controller 30 determines that the rotational speed of the condenser fan 20 is the first freezing chamber reference rotational speed (RPM). Can be. And, the control unit 30, so that the rotation speed of the condenser fan 20 is maintained at the first freezing compartment reference rotation speed (RPM) until the detected freezing compartment temperature reaches the target temperature of the freezing compartment 111. can do.

On the other hand, as a result of determination in step S10, if the detected freezing chamber temperature is less than the target temperature of the freezing chamber 111, the controller 30 causes the condenser fan 20 to rotate at a second freezing chamber reference rotational speed (RPM). Control (S12). At this time, the first freezing chamber reference rotation speed (RPM) is faster than the second freezing chamber reference rotation speed (RPM).

That is, when the detected freezing chamber temperature is greater than or equal to the target temperature of the freezing chamber 111, the detected freezing chamber temperature is less than the target temperature of the freezing chamber 111. The rotation of the condenser fan 20 is controlled to be faster than the rotational speed of the condenser fan 20. Accordingly, the rotational speed of the condenser fan 20 decreases during the operation of the refrigeration cycle.

Alternatively, in order to determine the time point at which the rotational speed of the condenser fan 20 is varied, it is also possible to compare the detected freezer temperature with a preset freezer reference temperature for speed change. Depending on the temperature setting, the freezing chamber reference temperature may be the same as or different from the target temperature of the freezing chamber 111 inputted by the input unit 33.

During the operation of the refrigeration cycle, the control unit 30 may determine whether a stop condition of the refrigeration cycle is satisfied (S13).

As described above, the case where the stopping condition of the refrigeration cycle is satisfied is a case where the temperature of the refrigerator compartment reaches the reference temperature of the second refrigerator compartment.

As a result of the determination in step S13, when it is determined that the stopping condition of the refrigeration cycle is satisfied, the control unit 30 stops the refrigeration cycle (S14). In addition, the control unit 30 returns to step S3 and operates the refrigeration cycle unless the refrigerator is turned off (S15).

The technical significance of the present invention will be described.

First, since the target temperature of the refrigerating compartment is higher than the target temperature of the freezing compartment, the evaporation temperature of the refrigerating compartment evaporator 17 when the refrigerating cycle is operated is higher than the evaporation temperature of the freezing compartment evaporator 16 when the refrigeration cycle is operated. Is high. When the evaporation temperature of the evaporator 17 for the refrigerating chamber is high, the condensation temperature of the condenser 13 tends to increase.

In addition, when the condenser fan 20 is operated, air outside the machine room 114 flows into the machine room 114 and then passes through the compressor 12 for the refrigerating room and then passes through the condenser 13. Accordingly, the temperature of the air introduced into the machine room 114 increases as it passes through the compressor 12 for the refrigerating chamber, and the air whose temperature is slightly increased passes through the condenser 13.

Therefore, in the present invention, so that the amount of condensed heat of the condenser is increased when the refrigerating cycle is operated, the control unit 30 determines that the rotational speed of the condenser fan 20 when the refrigerating cycle is operated is When the rotation speed of the condenser fan 20 can be controlled to be fast.

That is, each of the reference rotation speed of the first refrigerator compartment and the reference rotation speed of the second refrigerator compartment may be set to be faster than the reference rotation speed of the first freezing compartment.

In this way, when the refrigeration cycle operates, the condensation temperature of the condenser 13 is set to be faster than the rotational speed of the condenser 20 when the refrigeration cycle operates. As is lowered, cooling efficiency can be improved.

In addition, since the load when the sensed refrigerating compartment temperature is higher than the target temperature of the refrigerating compartment 112 is greater than the load when the detected refrigerating compartment temperature is less than the target temperature of the refrigerating compartment 112, in the present invention, the detected refrigerating compartment temperature is the When the temperature of the refrigerating chamber 112 is higher than the target temperature, the condenser fan 20 is rotated at the first refrigerating chamber rotational speed (RPM) to increase the amount of condensation heat.

In addition, when the sensed refrigerating chamber temperature is less than the target temperature of the refrigerating chamber 112, the condenser fan 20 is reduced by reducing the rotational speed of the condenser fan 20 so that power consumption for operating the condenser fan 20 is reduced. ) Is controlled to rotate at the second refrigerating chamber rotational speed (RPM).

On the other hand, when the refrigeration cycle operates, the evaporation temperature of the evaporator 16 for the freezing chamber is lower than the evaporation temperature of the evaporator 17 for the refrigeration chamber, and the first portion 131 of the condenser 13 is (132) Since the capacity is formed larger than that, when the rotation speed of the condenser fan 20 is controlled to be the same as the rotation speed when the refrigeration cycle is operated, the condensation capacity of the condenser 13 becomes unnecessarily large. This causes unnecessary power consumption to operate the condenser fan 20.

Therefore, in the present invention, as described above, the condenser fan 20 so that the rotational speed of the condenser fan 20 when the refrigeration cycle operates is slower than the rotational speed of the condenser fan 20 when the refrigeration cycle operates. ), it is possible to reduce power consumption for the operation of the condenser fan 20.

In addition, since the load when the detected freezing chamber temperature is higher than the target temperature of the freezing chamber 111 is greater than the load when the detected freezing chamber temperature is less than the target temperature of the freezing chamber 111, in the present invention, the freezing chamber temperature is the freezing chamber ( When the temperature is higher than the target temperature of 111), the condenser fan 20 is rotated at the first freezing chamber rotational speed (RPM).

In addition, when the detected freezing chamber temperature is less than the target temperature of the freezing chamber 111, the condenser fan 20 is reduced by reducing the rotational speed of the condenser fan 20 so that power consumption for operating the condenser fan 20 is reduced. ) Is controlled to be rotated at the second freezing chamber rotational speed (RPM).

In the above embodiment, it has been described that the rotational speed of the condenser fan varies depending on the freezing chamber temperature and the refrigerator compartment temperature in each case of the refrigeration cycle and the refrigeration cycle. , When the condenser fan is rotated at the standard rotational speed of the refrigerator compartment (constant rotational speed), and the refrigeration cycle is operated, the condenser fan may rotate at the standard rotational speed of the freezer compartment (constant rotational speed).

Even in this case, the reference rotation speed of the refrigerator compartment may be set faster than the reference rotation speed of the freezing compartment.

11: compressor for freezer compartment 12: compressor for refrigerator compartment
13: condenser
16: evaporator for freezer 17: evaporator for refrigerator
18: freezer fan 19: refrigerator fan
20: condenser fan
30: control unit

Claims (12)

A refrigeration cycle including a compressor for a freezing compartment and a first condenser, and operating for cooling the freezing compartment;
A refrigeration cycle including a compressor for a refrigerating compartment and a second condenser, and operating for cooling the refrigerating compartment;
A condenser fan for flowing air to exchange heat with the first and second condensers; And
It includes a control unit for controlling each of the compressor and condenser fan,
The control unit controls the rotation speed of the condenser fan so that the rotation speed of the condenser fan when the refrigeration cycle operates is higher than the rotation speed of the condenser fan when the refrigeration cycle operates,
When the temperature of the refrigerating chamber sensed by the refrigerating chamber temperature sensor is equal to or higher than the reference temperature of the refrigerating chamber, the controller causes the condenser fan to rotate at a reference rotation speed of the first refrigerating chamber,
When the sensed temperature of the refrigerator compartment is less than the reference temperature of the refrigerator compartment, the controller controls the condenser fan to rotate at a rotation speed of the second refrigerator compartment that is slower than the reference rotation speed of the first refrigerator compartment. The method of claim 1,
The control unit controls to maintain a state in which the condenser fan is rotated at a reference rotational speed of the refrigerator compartment when the refrigeration cycle is operated,
When the refrigeration cycle is operated, the condenser fan is controlled to be maintained in a state so that the condenser fan is rotated at a rotational speed of the freezing compartment lower than the reference rotational speed of the refrigerator compartment. delete delete The method of claim 1,
The refrigerator compartment reference temperature is a target temperature of the refrigerator compartment input through an input unit. The method of claim 1,
When the refrigeration cycle is operated, the control unit changes the rotational speed of the condenser fan. The method of claim 6,
When the temperature of the freezing compartment detected by the freezing compartment temperature sensor is equal to or higher than the freezing compartment reference temperature, the control unit causes the condenser fan to rotate at the reference rotation speed of the first freezing compartment,
When the detected temperature of the refrigerator compartment is less than the reference temperature of the freezing compartment, the controller controls the condenser fan to rotate at a rotation speed of the second freezing compartment that is slower than the reference rotation speed of the first freezing compartment. The method of claim 7,
The freezing chamber reference temperature is a refrigerator, characterized in that the target temperature of the freezing chamber input through an input unit. The method of claim 1,
A refrigerator having a condensation capacity of the first condenser larger than that of the second condenser. Operating a refrigeration cycle to cool the freezer compartment, and rotating the condenser fan at a reference rotational speed of the freezer compartment;
Determining whether a stop condition of the refrigeration cycle is satisfied;
When the stopping condition of the refrigeration cycle is satisfied, stopping the refrigeration cycle, operating a refrigeration cycle for cooling the refrigerating compartment, and rotating the condenser fan at a refrigerating compartment reference rotation speed faster than the freezer compartment reference rotation speed,
The control method of a refrigerator in which the reference rotation speed of the freezing compartment decreases while the refrigeration cycle is operating. The method of claim 10,
A method of controlling a refrigerator in which the reference rotation speed of the refrigerator compartment decreases while the refrigeration cycle is operating. A refrigeration cycle including a compressor for a freezing compartment, a first condenser, and a freezing compartment fan, and operating for cooling the freezing compartment;
A refrigeration cycle including a compressor for a refrigerating compartment, a second condenser, and a refrigerating compartment fan, and operating for cooling the refrigerating compartment;
A condenser fan for flowing air to exchange heat with the first and second condensers; And
It includes a control unit for controlling each of the compressor and condenser fan,
The control unit,
Cause the condenser fan and the freezer fan to operate when the refrigeration cycle operates,
Make the condenser fan and the refrigerating compartment fan operate when the refrigeration cycle operates,
A method of controlling a refrigerator for controlling the rotational speed of the condenser fan so that the rotational speed of the condenser fan when the refrigeration cycle operates is higher than the rotational speed of the condenser fan when the refrigeration cycle operates.

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