KR20130019307A - Refrigerator and control method thereof - Google Patents

Abstract

PURPOSE: A refrigerator and a control method thereof is provided to convert a fridge chamber to a refrigerating chamber or to switch off by maximally obtaining storage space of the fridge chamber without consumption of additional energy. CONSTITUTION: A refrigerator and a control method comprises a refrigerating chamber, a transition room(13), a cool air supply structure, a transition room damper apparatus(80), and a fridge damper apparatus. The transition room is installed in order to include much smaller size than the refrigerating chamber in the upper side of the refrigerating chamber, and a purpose varies in one between freezing, cooling and off. The cool air supply structure comprises a compressor, a condenser, an evaporator, an expansion valve, a ventilation fan, a transition room output fluid line(70), and a refrigerating chamber output fluid line(71). The transition room output fluid line guides cool air generated in the evaporator into the transition room. The refrigerating chamber output fluid line guides the cool air generated in the evaporator into the refrigerating chamber. The transition damper apparatus is installed in order to control supply of the cool air to the transition room. The fridge damper apparatus is installed in the refrigerating chamber in order to control the supply of the cool air to the refrigerating chamber.

Description

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

The present invention relates to a refrigerator that can be used by converting a storage compartment into a freezer compartment or a refrigerating compartment.

In general, a refrigerator is a device for storing food freshly using cold air generated in a cooling cycle. The storage compartment of the refrigerator is divided into a refrigerator compartment for keeping food at about 3 degrees Celsius and refrigerated foods, and a freezer compartment for freezing food at about 20 degrees Celsius.

Since the amount of food stored in the refrigerating compartment is generally higher than the amount of food stored in the freezer compartment, the refrigerating compartment is provided to have a larger size than the freezer compartment, and the refrigerating compartment is frequently located at the bottom of the refrigerator for easy access and freezer compartment. It may be provided at the top of the refrigerator compartment.

In such a refrigerator, the cold air supply system can be configured in various ways, but the cold air generated by one evaporator is supplied to the freezer compartment and the freezer compartment separately, but the damper device is installed in the cold compartment supply channel and the damper device is opened and closed appropriately. The method of controlling the temperature of the refrigerating chamber to be maintained at an image is below zero.

On the other hand, there is a refrigerator that can be used by switching the freezer compartment to the cold compartment or off. An example of such a refrigerator is disclosed in Korean Patent Publication No. 10-2010-0076089.

According to the above publication, the refrigerator includes a damper device for controlling the supply of cold air to the freezer compartment, and a heating means for heating the freezer compartment, and restricts the supply of cold air to the freezer compartment through the damper device to convert the freezer compartment into a cold compartment and simultaneously generates heat. The freezer compartment is heated by means. However, this method costs more because additional energy is consumed.

One aspect of the present invention discloses a refrigerator and a control method thereof that can switch the freezer compartment to the refrigerator compartment or off.

One aspect of the present invention discloses a refrigerator and a control method thereof that do not require additional energy while switching a refrigerator or a freezer off or in a refrigerator.

One aspect of the present invention discloses a refrigerator capable of avoiding a reduction of a storage space of a freezer compartment while providing a damper device in a freezer compartment cold air supply flow path.

One aspect of the present invention discloses a refrigerator capable of easily installing a damper device in the freezer compartment or the refrigerating compartment cold air supply passage.

One aspect of the present invention discloses a control method of a refrigerator which prevents frost from forming on the freezer compartment cold air supply flow path when the freezer compartment is switched to the refrigerating compartment or used off.

According to the idea of the present invention, a refrigerator comprises: a refrigerating compartment; and a switching chamber provided on the upper side of the refrigerating compartment and having a size smaller than that of the refrigerating compartment and varying in one of refrigeration, refrigeration, and off. A cold air supply device including an evaporator, an expansion valve, a blower fan, a conversion chamber discharge passage guiding cold air generated in the evaporator to the conversion chamber, and a refrigerating chamber discharge passage guiding cold air generated in the evaporator to the refrigerating chamber; And a switching chamber damper device installed in the switching chamber discharge passage to control the supply of cold air to the switching chamber. And a refrigerating chamber damper device installed in the refrigerating chamber discharge passage to control the supply of cold air to the refrigerating compartment. When the use of the switching chamber is refrigeration, the compressor may be configured according to whether the temperature of the switching chamber reaches a freezing temperature. The compressor is operated or stopped depending on whether the temperature of the refrigerating chamber has reached the refrigerating temperature when the use of the switching chamber is either refrigeration or off.

Here, when the use of the switching chamber is refrigeration, the switching chamber damper device maintains an open state, and the refrigerating chamber damper device may be opened or closed depending on whether the temperature of the refrigerating chamber reaches a refrigerating temperature.

In addition, when the use of the switching chamber is refrigerated, the switching chamber damper device is opened or closed depending on whether the temperature of the switching chamber has reached the refrigerator temperature, the refrigerator compartment damper device can maintain the open state.

In addition, when the use of the switching chamber is off, the switching chamber damper device may maintain a closed state, the refrigerator compartment damper device may maintain an open state.

In addition, when the use of the switching chamber is one of refrigeration or off, it is possible to generate a flow in the switching chamber discharge flow path by intermittently opening the switching chamber damper device and operating the blower fan irrespective of the temperature of the switching chamber.

In addition, the defroster may be cooled by opening the refrigerating chamber damper device and operating the blower fan during or after defrosting the evaporator.

In addition, the conversion chamber may have a thicker thermal insulation wall than the refrigerating chamber.

In addition, the cold air supply device divides the switching chamber into a cold air generating chamber in which the storage space in front and the evaporator in the rear is disposed, and distributes the cold air generated in the cold air generating chamber to the conversion chamber discharge flow path and the refrigerating chamber discharge flow path therein. It may further include a duct unit is formed to distribute the flow path.

The switching chamber discharge passage may include a rear passage formed behind the duct unit and a through passage passing through the duct unit to connect the rear passage and the storage space.

Here, the switching chamber damper device may be installed in the rear passage.

In addition, the rear channel may be located on one side of the evaporator.

In addition, the blowing fan may include a centrifugal fan.

In another aspect, a refrigerator according to the spirit of the present invention is a refrigerator compartment; and a switching chamber provided to have a size smaller than that of the refrigerator compartment on the upper side of the refrigerator compartment and varying in one of refrigeration, refrigeration, and off. A duct unit for dividing into a storage space and a cold air generating chamber at the rear; and an evaporator disposed in the cold air generating chamber; and a compressor for forming a cooling cycle together with the evaporator to start the cooling cycle. A blowing fan for flowing; and a distribution passage formed in the duct unit to distribute the cold air generated in the cold air generating chamber to the storage space and the refrigerating chamber; and to guide the cold air from the distribution passage to the storage space. A switching chamber discharge passage; and a refrigerating chamber discharge passage guiding cold air from the distribution passage to the refrigerating chamber; and supplying cold air to the switching chamber. A switch chamber damper device installed in the switch chamber discharge flow path to prevent the change; And a refrigerating chamber damper device installed in the refrigerating chamber discharge passage to control the supply of cold air to the refrigerating chamber, wherein the operation time of the compressor is determined by the temperature of the switching chamber when the use of the switching chamber is refrigeration. If the use of the conversion chamber is either refrigeration or off, it is determined by the temperature of the refrigerating compartment.

Here, when the use of the switching chamber is refrigeration, the compressor may be operated until the temperature of the switching chamber reaches the freezing temperature.

In addition, when the use of the switching chamber is refrigeration, the refrigerating chamber damper device may be closed when the temperature of the refrigerating chamber reaches the refrigerating temperature.

In addition, when the use of the switching chamber is either refrigeration or off, the compressor may be operated until the temperature of the refrigerating chamber reaches the refrigerating temperature.

Here, when the use of the switching chamber is refrigeration, the switching chamber damping device may be closed when the temperature of the switching chamber reaches the refrigerating temperature.

A control method of a refrigerator according to the spirit of the present invention includes a refrigerating chamber, a switching chamber having a variable use, an evaporator, a compressor, a blower fan forcing the cold air to flow, a switching chamber discharge passage for guiding cold air to the switching chamber, and the refrigerating chamber. A refrigerator having a refrigerating chamber discharge passage guiding cold air to the air, a switching chamber damping device installed in the switching chamber discharge passage, and a refrigerating chamber damper device installed in the refrigerating chamber discharge passage, wherein the operation time of the compressor is changed according to the use of the switching chamber. Optionally depending on the temperature of the switching chamber or on the temperature of the refrigerating chamber.

Here, when the use of the switching chamber is refrigeration, it may be determined whether the temperature of the switching chamber reaches a freezing temperature, and when the temperature of the switching chamber reaches the freezing temperature, the operation of the compressor may be stopped.

In addition, when the use of the switching chamber is a refrigeration, it may be determined whether the temperature of the refrigerating compartment has reached the refrigerating temperature, and when the temperature of the refrigerating compartment has reached the refrigerating temperature, the refrigerating compartment damper device may be closed.

In addition, when the use of the switching chamber is refrigeration, it is determined whether the temperature of the refrigerating chamber has reached the refrigerating temperature, and if the temperature of the refrigerating chamber reaches the refrigerating temperature, the operation of the compressor may be stopped.

In addition, when the use of the switching chamber is refrigerated, it is determined whether the temperature of the switching chamber has reached the refrigerating temperature, and when the temperature of the switching chamber reaches the refrigerating temperature, the switching chamber damping device may be closed.

In addition, when the use of the switching chamber is off, it is determined whether the temperature of the refrigerating chamber has reached the refrigerating temperature, and if the temperature of the refrigerating chamber reaches the refrigerating temperature, the operation of the compressor may be stopped.

Further, when the use of the switching chamber is either refrigeration or off, the switching chamber damper device may be opened at a predetermined interval for a predetermined time and the blower fan may be operated to generate flow in the switching chamber discharge passage.

The refrigerator may be cooled by opening the refrigerator compartment damper device and operating the blower fan during defrosting of the evaporator or after restarting the compressor.

According to the spirit of the present invention, there is no additional energy consumption and can be switched off or turned off in the refrigerating chamber while maximizing the storage space of the freezing compartment.

Further, the damper device can be easily installed in the freezing chamber discharge flow path.

In addition, frost can be prevented from forming in the freezer compartment discharge flow path when the freezer compartment is used as a refrigerating compartment or turned off.

1 is a front view showing the internal structure of a refrigerator according to an embodiment of the present invention.
Figure 2 is a front view showing the structure of the switching room separating the duct unit of the refrigerator of Figure 1;
3 is a schematic side cross-sectional view of the refrigerator of FIG.
4 is an enlarged view illustrating a duct unit of the refrigerator of FIG. 3;
Figure 5 is an exploded perspective view showing a duct unit of the refrigerator according to the embodiment of the present invention.
6 is an exploded perspective view of the duct unit of FIG. 5 viewed from the rear;
7 is a front view showing a diaphragm of the duct unit of FIG.
8 is a view showing a control method when using the switching room of the refrigerator according to an embodiment of the present invention for freezing.
9 is a view showing a control method when the switching room of the refrigerator according to an embodiment of the present invention for refrigeration.
10 is a view showing a control method when using the switching room of the refrigerator off in accordance with an embodiment of the present invention.

Hereinafter, preferred embodiments according to the present invention will be described in detail.

1 is a front view showing the internal structure of the refrigerator according to an embodiment of the present invention, Figure 2 is a front view showing the structure of the switching chamber to separate the duct unit of the refrigerator of Figure 1; 3 is a schematic side cross-sectional view of the refrigerator of FIG. 1.

1 to 3, the refrigerator 1 is usually used for refrigeration but can be used for refrigeration or off when necessary, and a switching chamber 13 and a refrigerating chamber 14 formed below the switching chamber 13. It includes a main body 10 having a). Each of the switching chamber 13 and the refrigerating chamber 14 has an open front surface, and the open front surface may be opened and closed by the switching chamber door 17 and the refrigerating chamber door 18 which are hinged to the main body 10.

The switching chamber 13 and the refrigerating chamber 14 are divided by the intermediate wall 16, and a heat insulating material is foamed inside the intermediate wall 16 to prevent heat exchange between the switching chamber 13 and the refrigerating chamber 14.

The switching chamber 13 is provided to have a smaller size than the refrigerating chamber 14, and a shelf 19 may be mounted therein to place food therein. Inside the switching chamber 13 and the refrigerating chamber 14, a temperature sensor (not shown) capable of measuring temperature is provided, respectively.

The main body 10 includes an inner wound 11 forming the switching chamber 13 and the refrigerating chamber 14, an outer wound 12 coupled to an outer side of the inner wound 11 to form an exterior of the refrigerator 1, and an inner wound 11. ) And a heat insulating wall 25 formed by foaming a heat insulating material between the outer box 12.

Here, since the switching chamber 13 is usually used for freezing, it is preferable to have a heat insulating wall 25 thicker than the refrigerating chamber 14 so as to further block the outflow of cold air.

It includes a compressor 41, a condenser (not shown), an evaporator 40, an expansion valve (not shown), and a refrigerant pipe (not shown) to supply cold air to the switching chamber 13 and the refrigerating chamber 14. A cold air supply device 26 is provided.

The compressor 41 is installed in the machine room 43 provided below the main body 10 and receives electrical energy from the outside to compress the refrigerant to high temperature and high pressure by using rotational force such as an electric motor. The refrigerant compressed to high temperature and high pressure is condensed while passing through a condenser (not shown) provided at the rear of the main body 10, and becomes a low temperature low pressure liquid state while passing through an expansion valve (not shown).

The evaporator 40 generates cold air by cooling the surrounding air while evaporating the low temperature low pressure liquid refrigerant passing through the expansion valve (not shown). The completely evaporated refrigerant is again supplied to the compressor 41 to circulate the cooling cycle. In addition, the evaporator 40 may be provided with a defrost heater (not shown).

On the other hand, the evaporator 40 may be arranged behind the switching chamber 13. In FIG. 2, the state in which the duct unit 30 to be described later is separated from the switching chamber 13 is illustrated. As shown in FIG. 2, an evaporator 40 is installed in the rear inner phase 11 of the switching chamber 13. A seating portion 20 recessed backward may be formed so that the evaporator 40 may be installed in the seating portion 20. At this time, the evaporator 40 is installed to be biased in one side from the seating portion 20, the other side 15 of the seating portion 20 may be a rear flow path 72 to be described later.

Therefore, as will be described later, since the rear flow passage 72 in which the switching chamber damper device 80 is installed is disposed on one side of the evaporator 40, the storage space of the switching chamber 13 can be prevented from being reduced.

Although not shown, the evaporator 40 may be disposed below about 1/4 in the conversion chamber 13 so that the cold air generated in the evaporator 40 may flow directly into the refrigerating chamber 14 without passing through the duct unit 30. have. In this case, since cold air may flow directly from the evaporator 40 to the refrigerating chamber 14 even when the blowing fan 42 is not operated, temperature control of the refrigerating chamber 14 may be performed without the operation of the blowing fan 42, and the refrigerating chamber 14 may be used. Temperature can reach the refrigeration temperature more quickly.

On the other hand, the compressor 41 compresses the refrigerant and pushes it to a condenser (not shown) to operate a cooling cycle of compression, condensation, expansion, and evaporation. Therefore, when the compressor 41 is operated, cold air generated by the evaporator 40 is supplied to the switching chamber 13 and the refrigerating chamber 14.

At this time, the compressor 41 may be determined based on the operation time of the switching chamber 13.

That is, when the use of the switching chamber 13 is refrigeration, the compressor 41 has its operation time determined based on the temperature of the switching chamber 13, and when the use of the switching chamber 13 is refrigerated or off, the compressor 41 The operating time may be determined based on the temperature of the refrigerating compartment 14.

Specifically, when the use of the switching chamber 13 is refrigeration, the compressor 41 is operated or stopped depending on whether the temperature of the switching chamber 13 reaches the freezing temperature. In addition, when the use of the switching chamber 13 is refrigeration, the compressor 41 is operated or stopped depending on whether the temperature of the refrigerating chamber 14 has reached the refrigerating temperature.

Here, the refrigeration temperature is pointing to about 3 ℃, the freezing temperature is to point to approximately -20 ℃.

When the operation time of the compressor 41 is refrigerated or turned off as described above, the temperature of the refrigerating chamber 14 is set as a reference, so that the switching chamber 13 is switched through the switching chamber damper device 80 to be described later. The supply of cold air to the furnace can be interrupted and the cold air can be continuously supplied to the refrigerating chamber 14 until the temperature of the refrigerating chamber 14 reaches the refrigerating temperature.

On the other hand, the cold air supply device 26 is a distribution passage 60 for distributing the cold air generated in the evaporator 40 to the switching chamber 13 and the refrigerating chamber 14, and the switching chamber discharge passage for guiding the cold air to the switching chamber 13; 70, a refrigerating chamber discharge passage 71 for guiding the cold air to the refrigerating chamber, and a suction passage 74 for returning the discharged cold air back.

Inlet ports 22 and 24 are formed on the bottom surface of the switching chamber 13 and the upper surface of the refrigerating chamber 14 to guide the discharged cold air to the suction flow path 74, respectively. A discharge port 21 through which cold air guided through the air is discharged is formed, and at least one discharge hole 23 is vertically spaced on the rear surface of the refrigerating chamber 14 so that the cold air guided through the cold air discharge passage 70 is discharged. Is formed.

In addition, the cold air supply device further includes a duct unit 30 for dividing the switching chamber 13 into a storage space 51 in the front and a cold air generating chamber 50 in the rear.

The duct unit 30 divides the switching chamber 13 and forms the distribution passage 60 therein. Hereinafter, the structure of the duct unit 30, the distribution flow path 60, the switching chamber discharge flow path 70, and the refrigerator compartment discharge flow path 71 is explained in full detail.

4 is an enlarged view illustrating a duct unit of the refrigerator of FIG. 3, and FIG. 5 is an exploded perspective view illustrating the duct unit of the refrigerator according to the exemplary embodiment of the present invention. 6 is an exploded perspective view of the duct unit of FIG. 5 viewed from the rear; 7 is a front view illustrating the diaphragm of the duct unit of FIG. 5.

4 to 7, the duct unit 30 has a diaphragm 31, a front cover 32 coupled to the front face of the diaphragm 31, and a rear cover coupled to the rear face of the diaphragm 31. It comprises a 33.

The partition 31 and the front cover 32 form a scroll distribution channel 60 therebetween. The inlet 61, the first outlet 62, and the second outlet 63 of the distribution passage 60 pass through the diaphragm 31.

An inlet 61 of the distribution channel 60 is provided with a blowing fan 42 to force the flow of cold air. The blowing fan 42 may discharge the cold air in the circumferential direction to supply the cold air sucked from the cold air generating chamber 50 to the first scroll portion 64 and the second scroll portion 65 of the distribution passage 60. It is preferable that it is a centrifugal fan.

In addition, the distribution flow path 60 has a first scroll portion 64 connecting the inlet 61 and the first outlet 62, and a second scroll portion 65 connecting the inlet 61 and the second outlet 63. Has The first scroll portion 64 and the second scroll portion 65 are branched at a point 66 that has traveled a predetermined interval from the inlet 61 of the distribution flow path 50.

Therefore, the cold air introduced through the inlet 61 of the distribution channel 50 moves along the first scroll portion 64 with respect to the branch point 66 and flows out to the first outlet 62 or the second scroll portion. It moves along 65 and flows out to the 2nd exit 63. As shown in FIG.

The cold air flowing out through the second outlet 63 is guided to the refrigerating chamber 14 by the refrigerating chamber discharge passage 71 and discharged into the refrigerating chamber 14 through the discharge hole 23.

In addition, the cold air flowing out through the first outlet 62 is guided to the storage space 51 of the switching chamber 13 by the switching chamber discharge passage 70, and the switching chamber discharge passage 70 passes through the rear passage 71. It consists of a flow path 72.

In detail, the diaphragm 31 is provided with another opening 67 except for the inlet 61, the first outlet 62, and the second outlet 63 of the distribution passage 60. The opening 67 forms a through passage 72 through the duct unit 30 together with the discharge port 21 formed in the front cover 32.

In addition, as shown in FIG. 6, a flow path forming part 34 is formed at a rear portion of the diaphragm 31 so as to form a rear flow path 71 communicating the first outlet 62 of the distribution flow path 60 and the opening 67. ) Is projected. The flow path forming part 34 includes a partition 35 that divides the upper rear flow path 71 and the lower refrigerating chamber discharge flow path at the center thereof.

In addition, the flow path forming part 34 is provided so that the rear surface is opened, and the rear cover 33 is coupled to the rear surface of the flow path forming part 34 so as to close the rear surface of the open flow path forming part 34.

Therefore, the flow path forming part 34 and the rear cover 33 may be coupled to each other to form a rear flow path 72 communicating the first outlet 62 and the opening 67 of the distribution flow path 30. At this time, the second outlet 63 of the distribution channel 30 communicates with the refrigerating chamber discharge channel 71 at the lower side.

Meanwhile, the switching chamber damper device 80 may be installed in the rear channel 72. The switching chamber damper device 80 is installed on the flow path to control the flow rate, and is rotatably mounted to the housing 82 having the cold air passage hole 85 and the housing 82 to open and close the cold air passage hole 85. It may be configured to include an opening and closing plate 83 and a drive motor unit 84 to provide a rotational force to the opening and closing plate 83.

Therefore, the switching chamber damper device 80 is provided on the rear channel 72 to control the flow rate of the cold air passing through the rear channel 72 by opening or closing the rear channel 72.

With this configuration, the switching chamber damper device 80 may be located at one side of the rear evaporator 40 of the duct unit 30 as described above, so that the storage space 51 of the switching chamber 13 can be secured to the maximum. Can be.

Meanwhile, before the rear cover 33 is coupled to the diaphragm 31, the switching chamber damper device 80 is inserted into the flow path forming part 32, and the switching chamber damper device 80 is partitioned with a fastening member such as a screw or an adhesive. It can be fixed to 31. Next, by coupling the rear cover 33 to the diaphragm 31, the switching chamber damper device 80 may be easily installed in the rear channel 72.

The refrigerating chamber damper device 81 that controls the flow rate of the refrigerating chamber discharge channel 71 may also be installed in the refrigerating chamber discharge channel 71 in the same manner as the switch chamber damper device 80, and a description thereof will be omitted.

8 is a view showing a control method when using the switching room of the refrigerator according to an embodiment of the present invention for freezing, Figure 9 is a case of using the switching room of the refrigerator according to an embodiment of the present invention for refrigeration 10 is a diagram illustrating a control method, and FIG. 10 is a diagram illustrating a control method when the switching room of the refrigerator according to the embodiment of the present invention is turned off.

Hereinafter, a control method of a refrigerator according to an embodiment of the present invention will be described with reference to FIGS. 1 to 10.

The refrigerator 1 selectively determines the operating time of the compressor 41 according to the use of the switching chamber 13 according to the temperature of the switching chamber 13 or the temperature of the refrigerating chamber 14.

As shown in FIG. 8, when the use of the switching chamber 13 is set to refrigeration, the switching chamber 13 and the refrigerating chamber are opened by opening the switching chamber damper device 80 and the refrigerator compartment damper device 81 and operating the compressor 41. Start of cooling 14) (100).

It is determined whether the temperature of the refrigerating chamber 14 has reached the refrigerating temperature during the cooling operation (110). When the temperature of the refrigerating chamber 14 reaches the refrigerating temperature, the refrigerating chamber damper device 81 is closed to cool the air to the refrigerating chamber 14. Block the supply of (120).

At this time, since the compressor 41 continues to operate, the supply of cold air to the switching chamber 13 continues, and it is determined whether the temperature of the switching chamber 13 reaches the freezing temperature during the cooling of the switching chamber 13 (130), and the switching chamber 13 When the temperature of) reaches the freezing temperature, the operation of the compressor 41 is stopped and cooling is stopped (140).

Thus, the switching chamber 13 can be used for freezing and the refrigerating chamber 14 can be used for refrigeration.

As shown in FIG. 9, when the use of the switching chamber 13 is set to refrigeration, the switching chamber damper device 80 and the refrigerator compartment damper device 81 are opened and the compressor 41 is operated to operate the switching chamber 13 and the refrigerating chamber ( Start cooling 14) (200).

Here, the switching chamber 13 has a larger size than the refrigerating chamber 14 and has a thick heat insulating wall 25, so that the switching chamber 13 reaches the refrigerating temperature before the refrigerating chamber 14.

Therefore, while the cooling is in progress, first, it is determined whether the temperature of the switching chamber 13 reaches the refrigerating temperature (210), and when the switching chamber 13 reaches the refrigerating temperature, the switching chamber damper device 80 is closed to switch the switching chamber (13). The supply of cold air to the furnace is blocked (220).

At this time, the compressor 41 continues to operate to cool the refrigerating chamber 14 continuously. Therefore, it is determined whether the temperature of the refrigerating chamber 14 reaches the refrigerating temperature during the cooling of the refrigerating chamber 14 (230), and when the refrigerating chamber 14 reaches the refrigerating temperature, the operation of the compressor 41 is stopped (240).

Thus, both the switching chamber 13 and the refrigerating chamber 14 can be used for refrigeration.

On the other hand, when the switch chamber damper device 80 is closed and the compressor 41 continues to operate to cool the refrigerating chamber 14, frost may form on the switch chamber discharge passage 70 due to a temperature difference.

Therefore, even if the temperature of the switching chamber 13 has already reached the refrigerating temperature in order to prevent frost from forming in the switching chamber discharge passage 70, the switching chamber damper device 80 is intermittently opened to blow the cold air into the switching chamber discharge passage 70. There is a need.

As shown in FIG. 10, when the use of the switching chamber 13 is set to off, the switching chamber damper device 80 is closed and the refrigerating chamber damper device 81 is operated to operate the compressor 41 in an open state. Cooling starts).

It is determined whether the temperature of the refrigerating chamber 14 has reached the refrigerating temperature during the cooling of the refrigerating chamber 14 (310). When the refrigerating chamber 14 reaches the refrigerating temperature, the operation of the compressor 41 is stopped (320).

Thereby, the switching chamber 13 can be turned off and only the refrigerating chamber 14 can be used.

On the other hand, the switching chamber damper device 80 is closed and the compressor 41 continues to operate to intermittently open the switching chamber damper device 80 to prevent frost from forming in the switching chamber discharge passage 70 while cooling the refrigerating chamber 14. It is preferable to blow the cold air into the switching chamber discharge passage 70 as described above.

On the other hand, when defrosting the switching chamber damper device 80 and the refrigerating chamber damper device 81 when the evaporator 14 is defrosted, the defrost heat is trapped in the distribution passage 60 and is not spread outside. In this case, since the evaporator 14 is maintained at a high temperature, the refrigerant pressure may also be maintained at a high pressure, and a defect due to overload may occur when the compressor 41 is operated.

Therefore, it is preferable to cool the evaporator by opening the refrigerating chamber damper device 81 and operating the blower fan 42 at the time of defrosting or before restarting the compressor 41 after defrosting. In particular, in this case, when the switching chamber damper device 80 is opened, frost may form in the switching chamber discharge passage 70 due to a temperature difference, and therefore, it is preferable to open the refrigerator compartment damper device 81.

Although the technical idea of the present invention has been described above with reference to specific embodiments, the scope of rights of the present invention is not limited to these embodiments. Various embodiments that can be modified or modified by those skilled in the art without departing from the spirit and spirit of the present invention as defined in the claims will also belong to the scope of the present invention.

1: Refrigerator 10: Body
11: internal injury 12: trauma
13: switch room 14: refrigerator
15: other side of the seating portion 16: intermediate wall
17: switch room door 18: refrigerator compartment door
19: shelf 20: seating portion
21 switch chamber discharge port 22 switch chamber suction port
23: refrigerator compartment discharge port 24: refrigerator compartment suction port
25: insulation wall 26: cold air supply device
30: duct unit 31: diaphragm
32: front cover 33: rear cover
34: flow path forming portion 35: partition portion
40: evaporator 41: compressor
42: blower fan 43: machine room
50: cold room 51: storage space
60: distribution channel 61: distribution channel inlet
62: distribution channel 1 exit 63: distribution channel 2 exit
64: first scroll portion 65: second scroll portion
66: branch point 67: opening
70: switching chamber discharge passage 71: refrigerating chamber discharge passage
72: rear flow path 73: through flow path
74: suction passage 80: switching chamber damper device
81: refrigerator compartment damper device 82: housing
83: opening and closing plate 84: drive motor unit
85: cold air passing hole

Claims (25)

Cold room;
A switching chamber provided at an upper side of the refrigerating chamber to have a size smaller than that of the refrigerating chamber and varying in one of freezing, refrigerating and off;
A compressor chamber, a condenser, an evaporator, an expansion valve, a blower fan, a switching chamber discharge passage for guiding the cold air generated in the evaporator to the switching chamber, and a refrigerating chamber discharge passage for guiding the cold air generated in the evaporator to the refrigerating chamber. Cold air supply device comprising a;
A switching chamber damper device installed in the switching chamber discharge passage to control the supply of cold air to the switching chamber; And
A refrigerator compartment damper device installed in the refrigerator compartment discharge passage to control the supply of cold air to the refrigerator compartment; Including,
When the use of the conversion chamber is refrigeration, the compressor is operated or stopped depending on whether the temperature of the conversion chamber has reached the freezing temperature,
And the compressor is operated or stopped depending on whether the temperature of the refrigerating compartment has reached the refrigerating temperature when the use of the switching chamber is one of refrigeration or off. The method of claim 1,
And when the use of the changeover room is refrigeration, the changeover room damper device maintains an open state, and the refrigerating room damper device opens or closes depending on whether the temperature of the refrigerating room reaches a refrigerating temperature. The method of claim 1,
And the switching chamber damper device is opened or closed depending on whether or not the temperature of the switching chamber reaches a refrigerating temperature, and the refrigerator compartment damper device maintains an open state. The method of claim 1,
And the switching chamber damper device maintains a closed state when the use of the switching chamber is off, and the refrigerator compartment damper device maintains an open state. The method of claim 1,
And when the use of the switching chamber is any one of refrigeration or off, the refrigerator may open the switch chamber damper device intermittently regardless of the temperature of the switch chamber and operate the blower fan to generate flow in the switch chamber discharge passage. The method of claim 1,
The refrigerator according to claim 1, wherein the refrigerator compartment damper device is opened and the blower fan is operated to cool the evaporator during or after defrosting the evaporator. The method of claim 1,
And the switching chamber has a thicker thermal insulation wall than the refrigerating chamber. The method of claim 1,
The cold air supply device divides the switching chamber into a cold air generating chamber in which the storage space in front and the evaporator in the rear are disposed, and distributes cold air generated in the cold air generating chamber to the switching chamber discharge channel and the refrigerating chamber discharge channel. And a duct unit having a flow path formed therein. 9. The method of claim 8,
And the conversion chamber discharge passage includes a rear passage formed behind the duct unit and a through passage passing through the duct unit to connect the rear passage and the storage space. 10. The method of claim 9,
The switch room damper device is characterized in that the refrigerator installed in the rear passage. 10. The method of claim 9,
The rear flow path is characterized in that the refrigerator is located on one side of the evaporator. The method of claim 1,
The blowing fan is a refrigerator, characterized in that it comprises a centrifugal fan. Cold room;
A switching chamber provided at an upper side of the refrigerating chamber to have a size smaller than that of the refrigerating chamber and varying in one of freezing, refrigerating and off;
A duct unit dividing the conversion chamber into a storage space in front and a cold air generating chamber in the rear;
An evaporator disposed in the cold air producing chamber;
A compressor which forms a cooling cycle together with the evaporator and starts the cooling cycle;
A blowing fan for forcibly flowing cold air;
A distribution passage formed inside the duct unit to distribute the cold air generated in the cold air generating chamber to the storage space and the refrigerating chamber;
A switching chamber discharge passage guiding cold air from the distribution passage to the storage space;
A refrigerator compartment discharge passage guiding cold air from the distribution passage to the refrigerator compartment;
A switching chamber damper device installed in the switching chamber discharge passage to control the supply of cold air to the switching chamber; And
A refrigerator compartment damper device installed in the refrigerator compartment discharge passage to control the supply of cold air to the refrigerator compartment; Including,
The operation time of the compressor is determined by the temperature of the switching chamber when the use of the switching chamber is refrigeration, and the refrigerator is characterized in that determined by the temperature of the refrigerating chamber when the use of the switching chamber is either refrigeration or off. The method of claim 13,
And the compressor is operated until the temperature of the switching chamber reaches the freezing temperature when the use of the switching chamber is refrigeration. The method of claim 13,
And the refrigerator compartment damper device is closed when the temperature of the refrigerating chamber reaches a refrigerating temperature when the use of the switching chamber is refrigeration. The method of claim 13,
And the compressor is operated until the temperature of the refrigerating chamber reaches the refrigerating temperature when the use of the switching chamber is either refrigeration or off. 17. The method of claim 16,
And the switching chamber damping device is closed when the temperature of the switching chamber reaches the cooling temperature. A refrigerating chamber, a diverting chamber with varying uses, an evaporator, a compressor, a blower fan forcing the cold air to flow, a diversion chamber discharge passage for guiding cold air to the diversion chamber, a refrigerating chamber discharge passage for guiding cold air to the refrigerating compartment, and In the refrigerator having a switching chamber damping device provided in the switch chamber discharge passage, and a refrigerator compartment damper device provided in the refrigerating chamber discharge passage,
The operation time of the compressor is selectively determined according to the temperature of the switching chamber or the temperature of the refrigerating chamber according to the use of the switching chamber. 19. The method of claim 18,
In the case where the use of the switching chamber is refrigeration, it is determined whether the temperature of the switching chamber reaches a freezing temperature,
And stopping the operation of the compressor when the temperature of the switching chamber reaches a freezing temperature. 19. The method of claim 18,
If the use of the switching room is refrigeration, it is determined whether the temperature of the refrigerating chamber has reached the refrigerating temperature,
And controlling the refrigerator compartment damper device when the temperature of the refrigerator compartment reaches the refrigerator temperature. 19. The method of claim 18,
When the use of the switching room is refrigeration, it is determined whether the temperature of the refrigerating chamber has reached the refrigerating temperature,
And stopping the operation of the compressor when the temperature of the refrigerating compartment reaches the refrigerating temperature. 19. The method of claim 18,
If the use of the switching chamber is refrigeration, it is determined whether the temperature of the switching chamber has reached the refrigerating temperature,
And closing the switching chamber damping device when the temperature of the switching chamber reaches a refrigerating temperature. 19. The method of claim 18,
When the use of the switching room is off, it is determined whether the temperature of the refrigerating chamber has reached the refrigerating temperature,
And stopping the operation of the compressor when the temperature of the refrigerating compartment reaches the refrigerating temperature. 19. The method of claim 18,
If the use of the switching chamber is one of refrigeration or off, the control method of the refrigerator, characterized in that to open the switching chamber damper device for a predetermined time at a predetermined interval and to operate the blowing fan to generate a flow in the switching chamber discharge passage. The method of claim 1,
And controlling the evaporator by cooling the evaporator by opening the refrigerator compartment damper device and operating the blower fan when the evaporator is defrosted or before the compressor is restarted after defrosting.

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