KR20170132958A - Method for driving defrost of refrigerator - Google Patents

Abstract

The present invention relates to a method for a defrosting operation of a refrigerator. According to the present invention, the method for the defrosting operation of the refrigerator comprises: a step wherein a control unit determines a defrosting condition for a plurality of rooms to determine if there is any room satisfying the defrosting condition; a step wherein the control unit drives a defrosting heater of the room satisfying the defrosting condition to perform defrosting for the satisfying room; a step wherein, after the control unit drives the defrosting heater of the satisfying room, when a first preset time has passed, the control unit drives a defrosting heater of another room to perform defrosting for the room; a step wherein the control unit determines a defrosting ending condition of the satisfying room to, if the room reaches the defrosting ending condition, forcibly operate the satisfying room; a step wherein the control unit stops the forced operation of the satisfying room to stop the defrosting heater of the other room; a step wherein the control unit forcibly operates the other room to keep the satisfying room in standby mode; and a step wherein the control unit stops the forced operation of the other room to return the satisfying room and the other room to a normal status. The present invention is to provide the method for the defrosting operation of the refrigerator, which is able to perform a defrosting operation to improve the temperature recovery capacity.

Description

METHOD FOR DRIVING DEFROST OF REFRIGERATOR [0002]

The present invention relates to a defrosting operation method of a refrigerator, and more particularly, to a defroster operation method of a refrigerator, in which, in a refrigerator having a plurality of rooms, a defrosting operation time of another room is adjusted And more particularly, to a defrosting operation method of a refrigerator which can improve a temperature recovery ability by increasing an operation rate when a forced start is performed.

BACKGROUND ART Generally, a refrigerator is a device for keeping various foods fresh for a long time using fresh air generated in a refrigeration cycle. The refrigerator has a freezing room for storing frozen foods below the freezing temperature, And a cooling system for cooling the freezing compartment and the freezing compartment and the refrigerating compartment.

The cooling system comprises a compressor, a condenser for condensing the compressed refrigerant, a capillary for adiabatically expanding the condensed refrigerant, and an evaporator for evaporating the expanded refrigerant. The apparatus may further include a blowing fan for supplying cool air generated in the evaporator to each storage room, and a three-way valve provided between the condenser and each evaporator to selectively supply the refrigerant to each evaporator. With this configuration, the conventional refrigerator cools the storage room by circulating the cooled air through the evaporator to the storage room through the blowing fan.

On the other hand, when the air circulated by the blowing fan is heat-exchanged in the evaporator, water vapor contained in the air freezes in the evaporator, and congealing occurs. Such superimposition hinders the circulation of the air, Defrosting is necessary to remove.

Therefore, when the total operation time obtained by integrating the total operation time of the compressor for the defrost operation exceeds the predetermined defrost start time, the defrost heater is heated to a defrost heater separately provided in the evaporator, or the blower is driven, A method such as removing the sex was used.

As a background technique of the present invention, there is a "defrosting control method of a refrigerator ", Korean Patent Laid-Open Publication No. 2009-0078388 (published on July 20, 2009).

When the defrosting operation is performed in accordance with the defrosting condition, the refrigerator having the plurality of rooms independently drives the defrost heater provided in the evaporator of each room when the defrosting start time is reached according to the defrost condition of each room, Thereby removing the casting impregnated in the evaporator.

After the defrosting operation is performed, cold air can be intensively supplied to the room where the defrosting has been completed through the forced operation in order to recover the inside temperature to the pre-defrosting operation.

However, since the defrosting operation is performed independently according to the defrost condition of each room, alternate operation is performed in order to supply the refrigerant even to another room when the other room is in a cooling condition even though forced start is performed for one room. There is a problem that the resilience is lowered.

It is an object of the present invention to provide a refrigerator having a plurality of rooms, wherein when one of the rooms satisfies a defrosting operation condition and performs a defrost operation, The defrosting operation is carried out to adjust the defrosting time so that the defrosting operation of the other room can be finished in accordance with the forcible start end time for restoring the inside temperature after defrosting operation of one room, A defrosting operation of the refrigerator is performed.

According to an aspect of the present invention, there is provided a defrost operation method for a refrigerator, comprising: a controller for determining a defrost condition for a plurality of rooms to determine whether there is a room satisfying a defrost condition; Driving the defrost heater in the satisfactory room satisfying the defrost condition to perform defrosting for the satisfactory room; Driving the defrost heater of the other room to perform defrosting for the other room when the first predetermined time elapses after the controller drives the defrost heater of the satisfactory room; When the control unit judges the defrost termination condition of the satisfaction room and reaches the defrost termination condition, forcibly actuating the satisfaction room; Stopping the forced start of the satisfaction room and stopping the defrost heater of another room; The control unit forcibly activating another room and keeping the satisfaction room in a standby state; And stopping the forced start of the other room and returning the other room to the normal room.

In the present invention, when there are a plurality of satisfactory rooms in the step of judging whether there is a room satisfying the defrosting condition, the control unit determines a satisfactory room according to the priority of each room.

In the present invention, forcibly starting the satisfaction room is characterized in that when the control unit reaches the defrost end condition, the control unit stops the defrost heater in the satisfaction room and forcibly starts the satisfaction room.

The step of forcibly starting the satisfaction room in the present invention is characterized in that the refrigerant is supplied to the satisfaction room at the maximum operating rate.

The step of stopping the forced start of the satisfactory room and stopping the defrost heater of the other room may be such that when the in-room temperature of the satisfactory room satisfies the set temperature of the satisfactory room, the control unit stops the forced start of the satisfactory room, And the defrost heater is stopped.

The step of stopping the forced start of the satisfactory room and stopping the defrost heater in the other room may be such that when the control unit has passed the second set time preset as the temperature recovery time of the satisfactory room, And stops the defrost heater of the evaporator.

The step of forcibly starting another room in the present invention is characterized in that the refrigerant is supplied to the other room at the maximum operating rate.

The step of stopping the forced start of another room and returning the other room to the normal room in the present invention is a step of stopping the forced start of the other room when the temperature inside the other room satisfies the set temperature of the other room And returning the room and other rooms to normal.

In the present invention, the forcible start of another room is stopped, and the normal return of the other room to the satisfaction room is stopped when the control unit stops the forced start of the other room after the third set time set in advance for the temperature recovery time of the other room Satisfaction room and other rooms to return to normal.

A defrosting operation method of a refrigerator according to the present invention is a refrigerator having a plurality of rooms, in which a defrosting operation is performed for another room after a set time when a defrosting operation is performed in a room satisfying a defrosting operation condition, It is possible to improve the temperature recovery force by adjusting the defrosting time by defrosting the defrosting operation so that the defrosting operation of the other room can be terminated in accordance with the forcible start end time for restoring the inside temperature after the defrosting operation of the room.

1 is a block diagram illustrating a control apparatus for a refrigerator according to an embodiment of the present invention.
2 is a flowchart illustrating a defrosting method of a refrigerator according to an embodiment of the present invention.
FIG. 3 is a view showing the operation state of each room by the defrosting operation method of the refrigerator according to the embodiment of the present invention.

Hereinafter, a defrosting method of a refrigerator according to the present invention will be described with reference to the accompanying drawings. In this process, the thicknesses of the lines and the sizes of the components shown in the drawings may be exaggerated for clarity and convenience of explanation. In addition, the terms described below are defined in consideration of the functions of the present invention, which may vary depending on the intention or custom of the user, the operator. Therefore, definitions of these terms should be made based on the contents throughout this specification.

1 is a block diagram illustrating a control apparatus for a refrigerator according to an embodiment of the present invention.

1, a control apparatus for a refrigerator according to an embodiment of the present invention includes an internal temperature sensor 10, a temperature setting unit 20, a defrost temperature sensor 30, a control unit 40, a blowing fan 50 ), A defrost heater (60), a compressor (70), and a step valve (80).

The internal temperature sensor 10 is provided in each of a plurality of rooms (not shown), and senses the room temperature and provides the sensed room temperature to the control unit 40 so that the set temperature can be maintained constant while performing the normal operation mode.

The temperature setting unit 20 sets the temperature for each of the plurality of rooms and provides the temperature to the control unit 40. [

The defrost temperature sensor 30 is installed in each of the evaporators (not shown) provided for each room to cool the respective rooms, detects the surface temperature of the evaporator, and provides the detected temperature to the control unit 40 to defrost the defrosting The driving of the heater 60 is stopped and the end point of the defrosting mode can be determined.

Here, the defrost heater 60 is installed in the evaporator of each room and is independently driven.

A blowing fan (50) is provided for each room to circulate the cool air of the evaporator into the room in association with the driving of the compressor (70) and the step valve (80).

The compressor (70) compresses the refrigerant to a high temperature and a high pressure so that it can be supplied to each room.

The step valve 80 compresses the refrigerant at a high temperature and a high pressure in the compressor 70, and then supplies the condensed low temperature and high pressure refrigerant to the evaporator of each room so that each room can be cooled according to the refrigeration cycle.

The control unit 40 receives the internal temperature of each room from the internal temperature sensor 10 according to the set temperature of each room set by the temperature setting unit 20 and drives the compressor 70 and the step valve 80, So that the temperature inside the furnace can be maintained at the set temperature.

In addition, the control unit 40 determines the defrosting condition for removing the frost cast on the evaporator of each room, and performs the defrosting operation for each room.

That is, the control unit 40 stops the driving of the compressor 70, the step valve 80 and the blowing fan 50, drives the defrost heater 60 to perform the defrosting operation, .

At this time, the control unit 40 performs the defrosting operation for the other room after the set time when the defrosting operation condition is satisfied by one of the rooms, The defrosting time is adjusted so that the defrosting operation of the other room may be terminated in accordance with the ending time so that the defrosting operation is performed to improve the temperature restoring force.

FIG. 2 is a flowchart for explaining a defrosting operation method of a refrigerator according to an embodiment of the present invention, and FIG. 3 is a diagram illustrating operation states of respective rooms by a defrosting operation method of a refrigerator according to an embodiment of the present invention .

2 and 3, in the defrosting operation method of the refrigerator according to the embodiment of the present invention, the control unit 40 controls the defrosting operation of each room in accordance with the temperature set for each room in the temperature setting unit 20, The indoor temperature is received from the sensor 10 and the compressor 70, the step valve 80 and the blowing fan 50 are driven and stopped to perform a normal operation mode so that the internal temperature of each room can be maintained at a set temperature.

In this way, the control unit 40 determines the defrosting condition for each room while the refrigerator is operated in the normal operation mode, and determines whether there is a room satisfying the defrosting condition (S10).

In step S10, the controller 40 judges the defrost condition for each room. If there is a satisfactory satisfactory room, the defrost heater 60 of the satisfactory room is driven to defrost the satisfactory room (S20).

If there is no room satisfying the defrosting condition in step S10, the defrosting condition is continuously judged. If there are a plurality of rooms satisfying the defrosting condition, the control unit 40 judges the satisfaction room according to the priority of each room .

For example, if there is a freezing room and a refrigeration room, the defrosting operation can be performed based on the freezing room by setting the priority of the freezing room high.

After the defrosting operation is performed for the satisfaction room in step S20, that is, after the defrost heater 60 in the satisfaction room is driven, the controller 40 determines whether the first set time has elapsed (S30) The defrost heater 60 of the other room is driven to defrost the other room (S40).

As described above, according to the present invention, even if another room does not satisfy the defrosting condition, the defrosting operation is performed on the satisfactory room according to the defrosting condition of the satisfactory room, and when the first set time has elapsed, .

Here, the first set time may be set so that the defrosting operation of another room may be terminated at the forcible start end time for restoring the in-room temperature after the defrosting operation for the satisfactory room.

After defrosting the other room in step S40, the control unit 40 determines defrost termination condition of the satisfaction room (S50).

For example, the control unit 40 may determine the defrost termination condition when the surface temperature of the evaporator is received from the defrost temperature sensor 30 installed in the evaporator of the satisfaction room and rises to a set temperature or more.

If the defrost termination condition is satisfied in step S50, the defrost heater 60 in the satisfaction room is stopped and the satisfaction room is forcibly started in step S60.

That is, the controller 40 supplies the refrigerant at the maximum operating rate to the satisfaction room so that the increased internal temperature due to the defrosting operation can be recovered quickly.

When the room temperature of the satisfactory room satisfies the set temperature of the satisfactory room after forcibly starting the satisfactory room in step S60, the control unit 40 stops forced start of the satisfactory room and stops the defrost heater 60 in the other room (S70).

In step S70, the control unit 40 may stop the forced start of the satisfaction room and stop the defrost heater 60 in the other room when the preset second set time has elapsed as the temperature recovery time of the satisfaction room.

After the forcible start of the satisfaction room is stopped in step S70 and the defrost heater 60 of the other room is stopped, the control unit 40 forcibly starts another room and maintains the satisfaction room in a standby state (S80).

That is, the control unit 40 supplies refrigerant at the maximum operating rate to the other room, so that the rising internal temperature due to the defrosting operation can be recovered quickly.

If the in-compartment temperature of another room satisfies the set temperature of another room after forcibly starting another room in step S80, the control unit 40 stops the forcible start of the other room and returns to the other room to the normal room (S90 ).

In step S80, the control unit 40 may stop the forcible start of the other room and return the room to the other room to the normal when the third set time set in advance for the temperature recovery time of the other room has elapsed.

As described above, according to the defrosting operation method of the refrigerator according to the embodiment of the present invention, in a refrigerator having a plurality of rooms, when one of the rooms satisfies the defrosting operation condition and performs the defrosting operation, The defrosting operation is carried out to adjust the defrosting time so that the defrosting operation of the other room can be finished in accordance with the forcible start end time for restoring the inside temperature after defrosting operation of one room, have.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it will be understood by those of ordinary skill in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims. I will understand.

Accordingly, the true scope of the present invention should be determined by the following claims.

10: internal temperature sensor 20: temperature setting unit
30: defrost temperature sensor 40:
50: blower fan 60: defrost heater
70: compressor 80: step valve

Claims (9)

Determining whether a room satisfies a defrosting condition by determining a defrosting condition for a plurality of rooms;
Driving the defrost heater of the satisfaction room satisfying the defrost condition to perform defrosting for the satisfaction room;
Driving the defrost heater of the other room to perform defrosting on the other room after the first predetermined time has elapsed after the controller drives the defrost heater of the satisfaction room;
Determining a defrosting termination condition of the satisfaction room and forcibly starting the satisfaction room when the defrosting termination condition is reached;
Stopping the forced start of the satisfaction room and stopping the defrost heater of the other room;
The control unit forcibly activating the other room and keeping the satisfaction room in a standby state; And
And stopping the forced start of the other room and returning the satisfaction room and the other room to the normal state.
2. The method according to claim 1, wherein, in the step of determining whether there is a room satisfying the defrosting condition, when the plurality of satisfying rooms are present, the controller determines the satisfaction room according to the priority of each room. How to drive.
2. The method of claim 1, wherein forcing the satisfaction room comprises:
Wherein the control unit stops the defrost heater of the satisfaction room and forcibly starts the satisfaction room when the satisfaction room reaches the defrost termination condition.
2. The method of claim 1, wherein forcing the satisfaction room comprises:
And the refrigerant is supplied to the satisfaction room at a maximum operating rate.
2. The method of claim 1, wherein stopping the forced start of the satisfaction room and stopping the defrost heater of the other room comprises:
Wherein the control unit stops forced start of the satisfaction room and stops the defrost heater of the other room when the indoor temperature of the satisfaction room satisfies the set temperature of the satisfaction room.
2. The method of claim 1, wherein stopping the forced start of the satisfaction room and stopping the defrost heater of the other room comprises:
Wherein the control unit stops the forced start of the satisfaction room and stops the defrost heater of the other room when a preset second preset time has elapsed as the temperature recovery time of the satisfaction room.
The method of claim 1, wherein forcibly starting the other room comprises:
And the refrigerant is supplied to the other room at a maximum operating rate.
The method of claim 1, further comprising: stopping the forced start of the other room; and returning the satisfaction room and the other room to the normal state,
Wherein the control unit stops the forced start of the other room and returns the satisfaction room and the other room to the normal when the in-room temperature of the other room satisfies the set temperature of the other room.
The method of claim 1, further comprising: stopping the forced start of the other room; and returning the satisfaction room and the other room to the normal state,
Wherein the control unit stops forcibly starting the other room when the preset third set time elapses with the temperature recovery time of the other room, and returns the satisfaction room and the other room to the normal state.

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