KR20170029346A - Control method of refrigerator - Google Patents

Control method of refrigerator Download PDF

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Publication number
KR20170029346A
KR20170029346A KR1020150126591A KR20150126591A KR20170029346A KR 20170029346 A KR20170029346 A KR 20170029346A KR 1020150126591 A KR1020150126591 A KR 1020150126591A KR 20150126591 A KR20150126591 A KR 20150126591A KR 20170029346 A KR20170029346 A KR 20170029346A
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KR
South Korea
Prior art keywords
compartment
refrigerating
cooling operation
evaporator
refrigerator
Prior art date
Application number
KR1020150126591A
Other languages
Korean (ko)
Inventor
허진석
Original Assignee
엘지전자 주식회사
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Publication date
Application filed by 엘지전자 주식회사 filed Critical 엘지전자 주식회사
Priority to KR1020150126591A priority Critical patent/KR20170029346A/en
Publication of KR20170029346A publication Critical patent/KR20170029346A/en

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D29/00—Arrangement or mounting of control or safety devices
    • F25D29/005—Mounting of control devices
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B47/00—Arrangements for preventing or removing deposits or corrosion, not provided for in another subclass
    • F25B47/006—Arrangements for preventing or removing deposits or corrosion, not provided for in another subclass for preventing frost
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D17/00—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces
    • F25D17/04—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces for circulating air, e.g. by convection
    • F25D17/06—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces for circulating air, e.g. by convection by forced circulation
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D21/00—Defrosting; Preventing frosting; Removing condensed or defrost water
    • F25D21/04—Preventing the formation of frost or condensate
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D21/00—Defrosting; Preventing frosting; Removing condensed or defrost water
    • F25D21/06—Removing frost
    • F25D21/08—Removing frost by electric heating
    • Y02B40/30—

Abstract

More particularly, the present invention relates to a control method for a refrigerator in which one evaporator is provided in a freezer compartment, and the fan of the evaporator is driven by a blower fan, a refrigerator damper and a freezer compartment damper controlled by the controller, A control method of a refrigerator for performing a refrigeration chamber or a freezer compartment cooling operation so as to maintain a set temperature supplied to a freezer compartment, characterized in that the control unit is operable to control a state in which driving of the compressor is maintained between a cooling operation of the refrigerating chamber and a freezing chamber cooling operation The freezing chamber damper is closed, the refrigerating chamber damper is opened, and the pre-cooling operation in which the blowing fan is stopped is performed for a preset time.

Description

Control method of refrigerator [0002]

The present invention relates to a control method of a refrigerator.

Generally, a refrigerator is a household appliance that allows low-temperature storage of food in an internal storage space that is shielded by a door. To this end, the refrigerator is configured to cool the inside of the storage space by using cool air generated through heat exchange with the refrigerant circulating in the refrigeration cycle, thereby storing the stored food in an optimum state.

Such a refrigerator allows the temperature inside the refrigerator to be maintained at a predetermined temperature so that the food stored in the refrigerator can always be stored in the best condition. In order to maintain the set temperature, the inside must be sealed, and it is configured to have a structure capable of continuous cooling by supplying cold air using a refrigeration cycle.

The storage space in the furnace enables the cool air generated in the evaporator to be supplied to the interior space by driving the blowing fan, in order to maintain a constant temperature. At this time, the blowing fan is driven when the temperature in the furnace is higher than the set temperature, and the cool air is supplied to the storage space to cool the furnace. When the furnace temperature is lower than the set temperature, the blowing fan is stopped to stop the supply of cool air to the storage space.

Korean Patent Laid-Open Publication No. 1997-0070868 discloses a refrigerator in which a storage space is composed of a refrigerating chamber and a freezing chamber, and a freezing chamber is maintained at a set temperature by cold air generated in an evaporator provided in the freezing chamber. The damper is provided on the flow path of the cool air supplied to the refrigerating chamber and the freezing chamber so that the refrigerating chamber and the freezing chamber can be supplied with cool air so that the refrigerating chamber and the freezing chamber can maintain the set temperature by opening and closing the damper, The refrigerator can freely cool the refrigerator compartment and the freezer compartment.

When the evaporator of the relatively high temperature enters into the operation of the freezing chamber when the cooling operation of the freezing chamber is switched to the cooling operation of the freezing chamber after completion of the cooling operation of the refrigerating chamber, There is a problem of deterioration.

An object of the present invention is to provide a control method of a refrigerator which can efficiently perform a cooling operation of a freezing chamber during a cooling operation of the refrigerating chamber when the refrigerating chamber and the freezing chamber are cooled by one evaporator.

An object of the present invention is to provide a control method of a refrigerator which can efficiently cool a refrigerating chamber after a refrigerating operation of the freezing chamber is completed when the refrigerating chamber and the freezing chamber are operated by one evaporator.

It is an object of the present invention to provide a control method of a refrigerator which can more efficiently perform a defrosting operation when a refrigerator and a freezer are cooled by one evaporator.

In the method of controlling a refrigerator according to an embodiment of the present invention, one evaporator is provided in a freezer room, and the cool air of the evaporator is supplied to the refrigerator compartment and the freezer compartment by driving the blower fan, the refrigerator compartment damper and the freezer compartment damper controlled by the controller Wherein the controller controls the refrigerator compartment or the freezer compartment to perform a cooling operation so as to maintain a predetermined temperature, wherein the controller controls the freezer compartment damper The refrigerator compartment damper is opened, and the pre-cooling operation in which the blow fan is stopped is performed for a set time.

The control unit starts driving the blowing fan in a state in which the compressor is driven, and closes the freezing chamber damper and opens the freezing chamber damper when performing the freezing chamber cooling operation after the completion of the pre-cooling operation.

Wherein the compressor maintains the compressor cooling power during the refrigerating chamber cooling operation during the pre-cooling operation and is kept lower than the compressor cooling power during the freezing chamber cooling operation.

And the set time is a time at which the temperature of the evaporator is cooled to a cooling temperature of the freezing chamber.

The control unit changes the setting of the cooling operation of the refrigerating compartment such that the cooling of the refrigerating compartment is performed more quickly and the cooling operation of the refrigerating compartment is terminated prematurely when the refrigerating compartment cooling operation and the freezing compartment cooling operation are concurrently performed.

The control unit raises the temperature of the blowing fan for blowing the cold air to the refrigerating chamber during the cooling operation of the refrigerating chamber.

And the controller increases the cooling power of the compressor when the refrigerating chamber is in the cooling operation.

The refrigerator compartment damper is opened and the blowing fan of the refrigerator compartment is periodically driven to supply the evaporator-side air to the refrigerator compartment during a rest period during which the cooling operation of the freezer compartment is terminated and the compressor is stopped. .

Wherein the control unit controls the driving period of the blowing fan during the recycling operation when the operating rate of the compressor during the cooling operation of the refrigerating chamber and the freezing chamber after the recycling operation is out of a predetermined ratio .

A defrosting operation for stopping the driving of the compressor and heating the evaporator may be performed in order to remove the frost on the evaporator. In the defrosting operation, the blowing fan is driven in a state where the refrigerating chamber damper is opened, And the evaporator is heated by driving the defrost heater after the temperature of the evaporator is raised naturally by the set temperature.

The blowing fan is driven until the temperature of the evaporator becomes equal to the temperature of the refrigerating chamber, and the defrost heater is driven in a state where the driving of the blowing fan is terminated.

The method of controlling a refrigerator according to an embodiment of the present invention has the following effects.

First, when the freezing compartment cooling operation is performed by the next cooling operation after the refrigerating operation of the refrigerating compartment is terminated, the blowing fan is turned off while the compressor is being operated for the set time after the completion of the refrigerating compartment cooling operation, and the refrigerating compartment damper is opened The pre-cooling operation is performed.

Therefore, the evaporator can sufficiently be cooled before the cooling operation of the freezing chamber is started, and the temperature can be rapidly increased to a temperature necessary for cooling the freezing chamber, and the cooling efficiency of the freezing chamber can be improved.

Secondly, in the case where the refrigerator compartment and the freezer compartment are simultaneously cooled, the refrigeration compartment is changed in cooling setting so that the refrigerator compartment can be cooled more quickly. Thus, The overall cooling operation time of the freezing chamber can be shortened.

Therefore, the overall driving time of the compressor can be reduced, and the power consumption can be reduced.

Third, a recycling operation is performed in which the blowing fan is periodically driven in a dormant section in which the cooling operation of the freezing chamber is completed and the compressor is stopped, and the remaining cold air of the evaporator side is supplied to the refrigerating chamber by opening and closing the refrigerating chamber damper .

Accordingly, it is possible to further cool the refrigerating compartment, thereby delaying the temperature dissatisfaction time of the refrigerating compartment, and to end the refrigerating operation even during the refrigerating operation of the refrigerating compartment, thereby reducing power consumption.

Particularly, by controlling the driving period of the blowing fan in accordance with the operation rate of the compressor during the subsequent normal operation, efficient cooling operation can be performed in a line that does not excessively increase the load of the freezing chamber.

Fourthly, when defrosting is required and the defrosting operation is required, the air in the refrigerating compartment and the air around the evaporator are circulated by driving of the blowing fan and the opening of the refrigerating compartment damper before driving the heater, And then the defrost heater is operated to remove the defrosting.

Therefore, the driving time of the defrost heater can be minimized, and the effect of reducing power consumption can be expected.

1 is a schematic view illustrating a refrigerator according to an embodiment of the present invention.
2 is a block diagram showing a control signal flow of the refrigerator.
FIG. 3 is a graph showing changes in the operating state of the refrigerator over time.
4 is a flowchart sequentially showing the operation of the refrigerator.
5 is a flowchart sequentially illustrating the operation of the refrigerator and the freezer in the refrigerator at the time of simultaneous operation.
6 is a flowchart sequentially showing the recycling operation of the refrigerator in the refrigerator.
7 is a flowchart sequentially showing the defrosting operation of the refrigerator.

Hereinafter, specific embodiments of the present invention will be described in detail with reference to the drawings. However, it should be understood that the present invention is not limited to the embodiment shown in the drawings, and that other embodiments falling within the spirit and scope of the present invention may be easily devised by adding, .

In other words, the embodiment of the present invention is described as an example of a side-by-side type refrigerator in which a refrigerator compartment and a freezer compartment are arranged side by side for convenience of explanation and understanding. However, It is noted that the present invention is applicable to all types of refrigerator.

1 is a schematic view illustrating a refrigerator according to an embodiment of the present invention. 2 is a block diagram showing a control signal flow of the refrigerator.

As shown in the drawing, the refrigerator 1 according to the embodiment of the present invention may be formed by a cabinet 10 for forming a storage space therein and a door 20 for opening and closing the storage space .

The storage space inside the cabinet 10 is divided into left and right sides by the barrier 11 to form the freezing compartment 12 and the refrigerating compartment 13, respectively. The door 20 includes a freezing compartment door 21 and a refrigerating compartment door 22 so that a pair can be rotatably mounted on both sides of the cabinet 10. The freezer compartment door 21 and the refrigerator compartment door 22 may be configured to independently open and close the freezer compartment 12 and the refrigerating compartment 13.

A plurality of drawers and shelves for storing food may be provided in the freezing room 12 and the refrigerating room 13. A basket for storing food may be provided on the rear surface of the freezer compartment door 21 and the refrigerator compartment door 22. The freezer compartment door 21 may be provided with an ice maker for making ice and a dispenser for taking out the ice made by the ice maker. A home bar may be provided in the refrigerator compartment door 22.

Meanwhile, although not shown in detail, a machine room partitioned from the storage space may be formed at the lower end of the cabinet 10. Inside the machine room, a compressor (31) constituting a refrigeration cycle and a condenser, a compressor (31) and a fan for cooling the condenser may be provided.

An evaporator 121 may be disposed at the rear of the freezer compartment 12 and a blowing fan 122 may be installed above the evaporator 121 to cool the freezer compartment 12 ) Or forcedly flow toward the refrigerating chamber (13). The evaporator 121 and the blowing fan 122 may be shielded by a grill pan forming a rear wall of the freezing chamber 12.

The grill pan may have a plurality of cool air discharge openings 124 and may discharge the cool air generated by the evaporator 121 toward the freezing chamber 12. The discharge port 124 is provided on the upper part of the freezing chamber 12 and the cool air blown by the rotation of the blowing fan 122 is moved downward of the freezing chamber 12, The freezing chamber 12 can be cooled evenly.

On the other hand, a freezer compartment damper (42) for selectively supplying cool air to the discharge port (124) may be provided on the flow path connected to the discharge port (124) or the discharge port (124) The freezer compartment damper 42 can be opened and closed by the controller 30 and is opened during the cooling operation of the freezer compartment 12 to supply the cool air generated in the evaporator 121 into the freezer compartment 12 do. When the cooling operation of the freezing chamber 12 is completed, the freezing chamber damper 42 may be closed to cut off the supply of air into the freezing chamber 12.

The barrier 11 is divided into the freezing chamber 12 and the freezing chamber 13 so that the freezing chamber 12 is provided with a freezing chamber 13 And a return duct 112 to be able to flow from the refrigerating chamber 13 to the freezing chamber 12.

In detail, a refrigerator compartment damper 41 is provided at an upper portion of the barrier 11, and the refrigerator compartment damper 41 can be controlled to be opened and closed by the controller 30. The refrigerator compartment damper 41 is opened during the cooling operation of the refrigerating compartment 13 so that the cool air generated by the evaporator 121 passes through the barrier 11 through the refrigerator compartment damper 41 and is supplied to the refrigerating compartment 13 Lt; / RTI > A return duct 112 is provided at a lower portion of the barrier 11 so that the air in the refrigerating chamber 13 flows into the freezing chamber 12. When the cooling operation of the refrigerating compartment 13 is completed, the refrigerating compartment damper 41 may be closed to cut off the supply of air into the refrigerating compartment 13.

The freezing room temperature sensor 123 and the refrigerating room temperature sensor 133 are provided in the freezing room 12 and the refrigerating room 13 to sense the temperatures of the freezing room 12 and the refrigerating room 13, respectively. The control unit 30 controls the operation of the compressor 31 and the refrigerator compartment damper 41 based on the temperature sensed by the refrigerator compartment temperature sensor 133 and the freezer compartment temperature sensor 123, 12 and the refrigerating chamber 13 can be cooled to maintain the set temperature.

That is, when the temperature inside the freezing compartment 12 is not satisfied, the freezing compartment damper 42 is opened, and when the temperature of the evaporator 121 is raised into the freezing compartment 12 by driving the blowing fan 122, Cooling air is supplied to cool the cold-storage compartment 12. At this time, the refrigerating chamber damper (41) is closed and the cold air of the evaporator (121) flows only into the freezing chamber (12) to cool the freezing chamber (12).

When the temperature inside the refrigerating compartment 13 is not satisfied, the freezing compartment damper 42 is closed and the refrigerating compartment damper 41 is opened and the freezing compartment of the evaporator 121 is cooled by the freezing compartment 12 So that the refrigerant can be supplied to the refrigerating chamber 13 through the refrigerating chamber damper 41. The refrigerating chamber 13 can be cooled by the cold air supplied into the refrigerating chamber 13 and the air inside the refrigerating chamber 13 can be recovered to the freezing chamber 12 through the return duct 112 have.

The refrigerator compartment damper 41 can selectively supply cold air from the freezer compartment 12 to the refrigerating compartment 13 through the various structures and controls the refrigerating compartment 13 to maintain the predetermined temperature by the controller 30. [ .

That is, the refrigerating compartment damper 41 is opened when the internal temperature of the refrigerating compartment 13 is equal to or higher than a predetermined temperature so that the refrigerating compartment 13 can be cooled, and when the internal temperature of the refrigerating compartment 13 is lower than the set temperature So that the refrigerating chamber 13 can maintain a predetermined temperature range.

The freezing chamber 12 may be provided with a defrost heater 33. The defrost heater (33) can be driven during a defrosting operation in which males are conceived on the surface of the evaporator (121) and it becomes difficult to exhibit normal cooling performance. The defrost heater (33) can be configured to contact the evaporator (121), and it is possible to directly or indirectly heat the frost cast on the evaporator (121).

The defrost heater 33 may be driven by the control unit 30 in a rest period not performed during the cooling operation of the refrigerating chamber 13 and the freezing chamber 12 and may be driven by the timer 32 for a predetermined time Lt; / RTI >

Hereinafter, operation of the refrigerator according to the embodiment of the present invention will be described with reference to the drawings.

FIG. 3 is a graph showing changes in the operating state of the refrigerator over time. 4 is a flowchart sequentially showing the operation of the refrigerator.

The refrigerator compartment temperature sensor 133 and the freezer compartment temperature sensor 123 provided in the refrigerating compartment 13 and the freezer compartment 12 measure the temperature in the compartment, And the driving of the blower fan and the refrigerating compartment damper 41 so that the temperature in the compartment can be maintained within the set temperature range.

In detail, the cooling of the refrigerating compartment 13 and the freezing compartment 12 is started by driving the compressor 31. [0050] Then, after a predetermined time has elapsed after the compressor is driven, The refrigerator compartment damper 41 is opened so that the cool air generated by the evaporator 121 can be supplied to the refrigerator compartment 13 and the refrigerator compartment 13 can be cooled to a predetermined temperature .

The ventilation fan 122 is driven and the refrigerating chamber damper 41 is opened in a state in which the evaporator 121 is sufficiently cooled after the set time has elapsed since the driving of the compressor 31 starts, So that efficient cooling of the refrigerating chamber 13 by the cold air supplied to the refrigerating chamber 13 can be performed.

If the temperature of the refrigerating compartment 13 detected by the refrigerating compartment temperature sensor 133 is equal to or higher than the upper limit temperature, the refrigerating operation of the refrigerating compartment 13, The blowing fan 122 is driven to open the refrigerator compartment damper 41 for cooling. The cool air of the evaporator 121 can be introduced into the refrigerating chamber 13 by opening the refrigerating chamber damper 41.

The cooling air of the evaporator 121 can be introduced into the refrigerating chamber 13 through the refrigerating chamber damper 41 by driving the blowing fan 122 to cool the inside of the refrigerating chamber 13. The air that has been cooled in the refrigerating chamber 13 can be introduced into the freezing chamber 12 through the return duct 112 and then sucked into the evaporator 121 to be cooled.

During the cooling operation of the refrigerating compartment 13, the blowing fan is continuously driven until the temperature inside the refrigerating compartment 13 detected by the refrigerating compartment temperature sensor 133 reaches the lower limit temperature, The cooling air is supplied to the refrigerating compartment while maintaining the opened state. [S103]

When the temperature of the refrigerating compartment 13 reaches a set lower limit temperature, the blowing fan stops driving and stops the supply of cold air to the refrigerating compartment, thereby completing the cooling operation of the refrigerating compartment 13. [S104]

The cooling operation of the freezing chamber 12 may be performed after the operation of the refrigerating chamber 13 is terminated and the cooling operation of the freezing chamber 13 The cooling operation of the freezing chamber 12 may be completed first and the cooling operation of the freezing chamber 12 may be further performed.

When the cooling operation of the freezing chamber 12 is performed after the end of the cooling operation of the refrigerating chamber 13, the pre-cooling operation S200 is performed between the cooling operation of the refrigerating chamber 13 and the freezing operation of the freezing chamber 12 .

In the pre-cooling operation, when the cooling operation of the refrigerating chamber 13 is completed and the driving of the blowing fan 122 is stopped, the blowing fan 122 The refrigerator compartment damper 41 remains open during a period in which the refrigerating compartment damper 41 is in the off-state.

The freezer compartment damper 42 maintains the closed state. In this state, the compressor 31 maintains the same refrigerant variation amount (CCR) as that during the cooling operation of the refrigerating compartment 13.

That is, before the cooling operation of the freezing chamber 12 is started, the blowing fan 122 is stopped to lower the temperature of the evaporator 121, and the temperature of the freezing chamber 12 is rapidly reached .

At this time, the blowing fan 122 can be stopped for a predetermined time, and the time from the stop of the blowing fan 122 until the set time is reached can be counted by the timer 32. The set time can be adjusted according to the set temperature of the freezing chamber 12. [

On the other hand, the pre-cooling operation may be completed at the end of the cooling operation of the refrigerating chamber 13, rather than completely terminating the cooling operation of the refrigerating chamber 13 depending on the situation. That is, the pre-cooling operation may be included in the cooling operation of the refrigerating chamber 13 if the refrigerating chamber damper 41 and the variable amount of the compressor cooling power are regarded as a reference. In the last part of the cooling operation of the refrigerating chamber 13, The driving of the compressor 122 is stopped for a set time and the pre-cooling operation and the cooling operation of the refrigerating chamber 13 are terminated at the same time so that the refrigerating chamber damper 41 is closed and the compressor cooling power variable amount is changed. ]

In the pre-cooling operation, the set time in which the blowing fan 122 is off is elapsed, and when the pre-cooling operation is completed, the cooling operation [S300] of the freezing chamber 12 is performed. Of course, the cooling operation of the freezing chamber 12 may be started simultaneously with the refrigerating chamber 13, or may be started during the cooling operation of the refrigerating chamber 13.

When the cooling operation of the freezing compartment 12 is started, the refrigerating compartment damper 41 is closed, the freezing compartment damper 42 is opened, the blowing fan 122 is opened, So that the cool air of the evaporator 121 can be supplied to the freezer compartment 12.

During the cooling operation of the freezing compartment (12), the compressor (31) increases the amount of variable refrigerating power of the compressor compared to that during the refrigerating operation of the refrigerating chamber (13) Accordingly, the temperature of the evaporator 121 can be kept lower. At this time, the temperature of the evaporator 121 is sufficiently lowered in the pre-cooling operation, and becomes a temperature suitable for the cooling operation of the freezing chamber 12 through the change of the cooling power of the compressor 31. [S301 ]

The freezer compartment 12 can be continuously cooled by the operation of the compressor 31. When it is detected that the temperature of the freezer compartment 12 has reached the lower limit temperature by the freezer compartment temperature sensor 123, The operation of the compressor 31 is stopped, the blowing fan 122 is stopped, and the freezer compartment damper 42 is closed. [S303] When the temperature of the freezing compartment 12 is determined to be satisfactory,

Meanwhile, in the refrigerator according to the embodiment of the present invention, simultaneous cooling operation in which the refrigerator compartment and the freezer compartment are operated at the same time may occur, and this will be described with reference to the drawings.

5 is a flowchart sequentially illustrating the operation of the refrigerator and the freezer in the refrigerator at the time of simultaneous operation.

As shown in the figure, the refrigerator compartment temperature sensor 133 and the freezer compartment temperature sensor 123 measure the temperature in the compartment for the operation of the refrigerator 1. [S401] Then, In this case, normal operation as shown in FIGS. 3 and 4 is performed.

On the other hand, when both the refrigerator compartment 13 and the freezer compartment 12 do not satisfy the set temperature, the refrigerator compartment 13 and the freezer compartment 12 perform the cooling operation simultaneously. At this time, both the refrigerating compartment damper 41 and the freezing compartment damper 42 are opened and the refrigerating compartment 13 and the freezing compartment 12 are supplied with cool air by driving the blowing fan 122, And the freezing chamber 12 simultaneously [S402]

During the simultaneous cooling operation of the refrigerator compartment 13 and the freezer compartment 12, the relatively hot air in the refrigerator compartment 13 continuously flows into the freezer compartment 12, To provide a continuous heat load to cool the freezer compartment 12, thereby delaying the time at which the freezer compartment 12 reaches the set temperature.

In order to prevent this, simultaneous operation of the refrigerator compartment 13 and the freezer compartment 12 should be avoided, but simultaneous operation of the refrigerator compartment 13 and the freezer compartment 12 must be performed according to circumstances. At this time, in order to minimize the influence of the freezing chamber 12, it is necessary to end the operation of the refrigerating chamber 13 as soon as possible. For this purpose, when the simultaneous cooling operation of the refrigerating chamber 13 and the freezing chamber 12 is completed , The control unit (30) changes the cooling setting of the refrigerating chamber (13).

More specifically, the control unit 30 controls the speed of the blowing fan 122 to be faster to cool the refrigerating chamber 13 in a short period of time So that the cooling of the refrigerating chamber 13 can be performed quickly. Meanwhile, when the blowing fan is separately provided in the refrigerating chamber and the freezing chamber, at least the rotational speed of the blowing fan provided in the refrigerating chamber is increased.

Also, if necessary, the temperature of the evaporator 121 may be lowered by increasing the cooling power of the compressor 31 during the operation of the refrigerating chamber 13, So that it is possible to cool the refrigerating compartment 13 at a higher speed by allowing the refrigerating compartment 13 to be supplied to the refrigerating compartment 13. [Step S403]

The temperature of the refrigerating chamber 13 reaches the set temperature at such a high speed so that the cooling operation of the refrigerating chamber 13 is terminated and then the freezing chamber 12 can be cooled by itself, It is possible to reduce the total operation time of the battery. [S404]

The controller 30 can operate the refrigerator 1 again in a normal operation state when the cooling operation of the refrigerating chamber 13 and the freezing chamber 12 is completed. The simultaneous cooling operation of the freezing chamber 12 may be performed continuously.

Meanwhile, the refrigerator may be further cooled using the cold air remaining in the evaporator during a rest period during which the cooling operation of the refrigerating chamber and the freezing chamber is terminated and the driving of the compressor is stopped. Hereinafter, the recycling operation of the refrigerator compartment will be described in detail with reference to the drawings.

6 is a flowchart sequentially showing the recycling operation of the refrigerator in the refrigerator.

As shown in the figure, the cooling operation of the refrigerator can be performed by the normal operation as described above.

When the cooling operation of the freezer compartment 12 is terminated during the normal operation, the compressor 31 is stopped and has a rest period (as shown in FIG. 3). Since the compressor 31 is kept in the stopped state during the idle period, the actual cooling operation by the driving of the compressor 31 is not performed. [S501]

However, when the cooling operation of the freezing chamber 12 is completed, the temperature of the refrigerating chamber 13 becomes higher than the temperature of the evaporator 121, and the refrigerant remaining in the refrigerating chamber 13 Cooling may be possible. In particular, the temperature immediately after the completion of the cooling operation of the freezing chamber 12 is substantially equal to the temperature of the freezing chamber 12, so that effective cooling of the refrigerating chamber 13 is possible.

Accordingly, in this state, the blowing fan 122 can be periodically driven, and the refrigerating chamber damper 41 can be opened or closed according to the driving cycle of the blowing fan 122. Therefore, the cold air remaining in the evaporator during the idle period can be supplied to the refrigerating chamber 13 by driving the blowing fan 122, thereby enabling the recycling operation of the refrigerating chamber 13. [S502]

On the other hand, when the temperatures of the refrigerating chamber 13 and the freezing chamber 12 are unsatisfactory, the idle period is terminated and the refrigerating chamber 13 and the freezing chamber 12 are cooled by normal operation. [S503]

The control unit 30 calculates the operation rate of the compressor 31. That is, the change of the operating time of the compressor 31, which is changed by the recycling operation of the refrigerating chamber periodically driven by the blowing fan 122, is calculated and compared with the setting ratio. [S505]

If the operation rate of the compressor 31 is higher than the set rate, it can be seen that the drive time of the compressor 31 is increased. This can be said to be due to an increase in the load of the freezer compartment due to the high temperature of the refrigerating compartment 13 air recovered in the freezing compartment 12 during the refrigerating compartment recycling operation. Therefore, the driving cycle of the blowing fan 122 is increased in the following refrigerating chamber recycling operation. In other words, the period of driving the blowing fan 122 is increased to reduce the amount of cold air supplied to the refrigerating chamber 13 and the load flowing into the freezing chamber. Of course, it is also possible to reduce the driving time of the blowing fan 122 while maintaining the driving cycle of the blowing fan 122. [S505]

On the other hand, when the operation rate of the compressor 31 is lower than the set rate, it can be seen that the drive time of the compressor 31 is reduced. This means that the load of the freezing compartment 12 is not significantly increased despite the recycling operation of the refrigerating compartment 13. Therefore, the driving cycle of the blowing fan 122 is reduced in the following refrigerating chamber recycling operation. That is, the period in which the blowing fan 122 is driven is reduced to increase the amount of cold air supplied to the refrigerating chamber (13). Of course, it is also possible to increase the driving time of the blowing fan 122 while maintaining the driving cycle of the blowing fan 122. [S506]

The operation of the refrigerator 1 is continued after the driving period of the blowing fan 122 is reduced. When the operation of the freezing chamber 12 is terminated, And performs the recycling operation of the refrigerating chamber in which the blowing fan 122 is driven according to the driving cycle.

During the operation of the refrigerator according to the embodiment of the present invention, moisture may be congested in the evaporator, and defrosting operation may be performed to periodically remove the property. Hereinafter, defrosting operation of the refrigerator according to the embodiment of the present invention will be described.

7 is a flowchart sequentially showing the defrosting operation of the refrigerator.

As shown in the figure, the controller 30 determines whether the defrosting operation is started while the normal operation is being performed. The defrosting operation may be performed at a predetermined time period or at a specific time that satisfies a specific condition determined by the control unit 30,

When the control unit 30 instructs the start of the defrost operation, the refrigerator compartment damper 41 is opened and the blower fan 122 is driven while the compressor 31 is stopped. Therefore, the air around the evaporator 121 can be supplied to the refrigerating chamber 13, exchanged with the air in the refrigerating chamber 13, and then introduced into the freezing chamber 12.

The air supply to the evaporator 121 in the freezing chamber 12 continues until the temperature of the evaporator 121 reaches the set temperature. The temperature of the evaporator 121 naturally rises when the air around the evaporator 121 is continuously supplied to the freezing chamber 12 while the compressor 31 is stopped.

The set temperature is a temperature immediately before the evaporator 121 is heated by the defrost heater 33 so that the heating efficiency of the defrost heater 33 and the temperature change of the refrigerating compartment 13 and the freezing compartment 12 And can be set to a specific temperature by referring to FIG.

For example, the set temperature may be the temperature of the refrigerating chamber 13 when the defrosting operation starts. That is, when the temperature of the evaporator 121 becomes equal to the temperature of the refrigerating compartment 13, the temperature of the evaporator 121 can no longer rise. From this time, the evaporator 121 121 is efficient.

The temperature of the evaporator 121 may be set to a specific temperature that is close to the temperature of the refrigerating chamber 13 since the temperature of the evaporator 121 may be too long to be the same as the temperature of the refrigerating chamber 13. [ S603]

Accordingly, when the temperature of the evaporator 121 reaches the preset temperature, the blowing fan 122 is stopped and the refrigerating chamber damper 41 is closed to cut off the supply of air to the refrigerating chamber 13. [ S604]

In this state, the defrost heater 33 is activated, and the evaporator 121 can be heated to a higher temperature by the operation of the defrost heater 33, [S605]

The defrosting operation is terminated after the defrost heater 33 is driven for a predetermined time or until the temperature of the evaporator 121 reaches a specific temperature. After completion of the defrosting operation, the operation returns to the normal operation described above. [S606]

Claims (11)

One evaporator is provided in the freezing room, and cooling air of the evaporator is supplied to the refrigerator compartment and the freezer compartment by driving the blower fan, the refrigerator compartment damper and the freezer compartment damper controlled by the control unit, and the refrigerator compartment or the freezer compartment is cooled A method for controlling a refrigerator comprising:
Wherein the control unit sets the pre-cooling operation in which the freezer compartment damper is closed, the refrigerating compartment damper is opened, and the blowing fan is stopped, while the driving of the compressor is maintained between the cooling operation of the refrigerating chamber and the freezing compartment cooling operation Wherein the control is performed for a predetermined period of time.
The method according to claim 1,
Wherein the control unit starts driving the blowing fan in a state in which the compressor is driven when the freezing chamber cooling operation is performed after the end of the pre-cooling operation, closes the freezing chamber damper, and opens the freezing chamber damper. Control method.
3. The method of claim 2,
Wherein the compressor maintains the compressor cooling power during the refrigerating chamber cooling operation during the pre-cooling operation, and is maintained lower than the compressor cooling power during the freezing chamber cooling operation.
3. The method of claim 2,
Wherein the set time is a time at which the temperature of the evaporator is cooled to a cooling temperature of the freezer compartment.
The method according to claim 1,
When the refrigerator compartment cooling operation and the freezer compartment cooling operation are simultaneously performed,
Wherein the control unit changes the setting of the cooling operation of the refrigerating compartment so that the refrigerating compartment is further cooled to terminate the refrigerating operation of the refrigerating compartment prematurely.
6. The method of claim 5,
Wherein the controller raises the temperature of the blowing fan for blowing cool air to the refrigerating compartment when the refrigerating compartment is being cooled.
6. The method of claim 5,
Wherein the controller increases the cooling power of the compressor when the refrigerator is in the cooling operation of the refrigerator compartment.
The method according to claim 1,
In the idle period where the cooling operation of the freezing chamber is terminated and the driving of the compressor is stopped,
Wherein the refrigerating compartment damper is opened and the blowing fan of the refrigerating compartment is periodically driven to supply the evaporator-side air to the refrigerating compartment.
9. The method of claim 8,
Wherein,
Wherein the controller controls the driving period of the blower fan during the recycling operation when the operating rate of the compressor during the cooling operation of the refrigerating chamber and the freezing chamber after the recycling operation becomes out of the set ratio, .
The method according to claim 1,
A defrosting operation for stopping the driving of the compressor and heating the evaporator may be performed to remove the impurities adhering to the evaporator,
Wherein when the defrosting operation is performed, the evaporator is heated by driving the defrost fan after the defroster damper is opened and the temperature of the evaporator is raised by the predetermined temperature.
11. The method of claim 10,
Wherein the blowing fan is driven until a temperature of the evaporator becomes equal to a temperature of the refrigerating chamber,
And the defrost heater is driven in a state in which the driving of the blowing fan is completed.

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Cited By (6)

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Publication number Priority date Publication date Assignee Title
WO2019045306A1 (en) * 2017-08-28 2019-03-07 삼성전자주식회사 Refrigerator and control method therefor
WO2019107066A1 (en) * 2017-11-30 2019-06-06 パナソニックＩｐマネジメント株式会社 Refrigerator
KR20200001710A (en) * 2018-06-28 2020-01-07 엘지전자 주식회사 control method of refrigerator
WO2020027595A1 (en) * 2018-08-02 2020-02-06 엘지전자 주식회사 Refrigerator control method
KR20200087044A (en) * 2019-01-10 2020-07-20 엘지전자 주식회사 Refrigerator
CN115507614A (en) * 2022-09-28 2022-12-23 Tcl家用电器（合肥）有限公司 Refrigeration control method of single-system refrigerator and single-system refrigerator

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2019045306A1 (en) * 2017-08-28 2019-03-07 삼성전자주식회사 Refrigerator and control method therefor
US11397041B2 (en) 2017-08-28 2022-07-26 Samsung Electronics Co., Ltd. Refrigerator and controlling method thereof
WO2019107066A1 (en) * 2017-11-30 2019-06-06 パナソニックＩｐマネジメント株式会社 Refrigerator
JP2019100585A (en) * 2017-11-30 2019-06-24 パナソニックＩｐマネジメント株式会社 refrigerator
KR20200001710A (en) * 2018-06-28 2020-01-07 엘지전자 주식회사 control method of refrigerator
WO2020027595A1 (en) * 2018-08-02 2020-02-06 엘지전자 주식회사 Refrigerator control method
KR20200015098A (en) * 2018-08-02 2020-02-12 엘지전자 주식회사 Refrigerator and method for controlling the same
US11879681B2 (en) 2018-08-02 2024-01-23 Lg Electronics Inc. Method for controlling refrigerator
KR20200087044A (en) * 2019-01-10 2020-07-20 엘지전자 주식회사 Refrigerator
CN115507614A (en) * 2022-09-28 2022-12-23 Tcl家用电器（合肥）有限公司 Refrigeration control method of single-system refrigerator and single-system refrigerator
CN115507614B (en) * 2022-09-28 2024-03-12 Tcl家用电器（合肥）有限公司 Refrigerating control method of single-system refrigerator and single-system refrigerator

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