KR20150031078A - Refrigerator - Google Patents

Abstract

The present invention comprises: a compression unit including a first compressor and a second compressor, wherein refrigerant passages of the first and second compressors are connected in parallel with each other; a condenser for condensing the refrigerant compressed in the compression unit; a first evaporator for cooling a first storage room; a second evaporator for cooling a second storage room, wherein a refrigerant passage of the second evaporator is connected in parallel with a refrigerant passage of the first evaporator; a first expansion unit disposed between the first evaporator and the condenser; and a second expansion unit disposed between the second evaporator and the condenser. In the compression unit, if the ambient temperature is equal to or higher than an external set temperature, at least one of the first storage room and the second storage room is overloaded, or the first storage room and the second storage room are in a freezing mode, the first compressor and the second compressor are operated, and otherwise, the first compressor is operated but the second compressor is not operated, thereby preventing the decline in efficiency in a kimchi storage mode and improving power consumption.

Description

Kimchi Refrigerator {Refrigerator}

The present invention relates to a kimchi refrigerator, and more particularly to a kimchi refrigerator having a plurality of evaporators and a plurality of compressors.

Generally, a kimchi refrigerator is a refrigerator designed to store kimchi and can be produced and controlled so that it can be stored for a long time at the most suitable temperature to preserve the fresh taste of kimchi.

It is preferable that the kimchi refrigerator should be stable so that the temperature change during storage is not large, and the kimchi is controlled so as not to be easily sated but to preserve the taste.

In recent years, kimchi refrigerators are becoming increasingly multifunctional, and users are using kimchi refrigerators as multi - purpose refrigerators for storing various foods as well as kimchi.

The kimchi refrigerator may include a plurality of evaporators, and a plurality of evaporators may cool the plurality of storage compartments. The Kimchi refrigerator includes a compressor for compressing the refrigerant, a condenser for radiating the high-temperature refrigerant compressed in the compressor, a valve for controlling the distribution of the condensed refrigerant, a capillary for decompressing the high-temperature refrigerant controlled by the valve, And an evaporator.

 The kimchi refrigerator can store the kimchi in at least one storage room, and at least one storage room can function to freeze the food when the kimchi is exhausted.

On the other hand, the Kimchi refrigerator can be provided with an inverter compressor capable of varying the compression capacity. The Kimchi refrigerator can detect the load, drive the compressor with high ALM when the load is large, and drive the compressor with low ALM when the load is small .

When the kimchi refrigerator has a storage room control temperature of -2 ° C to 0 ° C and the ambient temperature of the kimchi refrigerator is 30 ° C or less, it is not necessary to use a compressor having a large capacity because the heat insulation load of the kimchi refrigerator is not large.

KR 10-1172054 (August 09, 2012)

However, when the Kimchi refrigerator according to the related art is used in the freezing mode or when the temperature around the Kimchi refrigerator is high, the load can be greatly increased and a compressor having a large capacity is needed. There is a problem in that the efficiency in the Kimchi storage mode is lowered and the power consumption is increased.

An object of the present invention is to provide a kimchi refrigerator in which power consumption can be improved by controlling a plurality of compressors according to at least one of a storage mode and a use environment.

According to an aspect of the present invention, there is provided a refrigerator comprising: a main body having a first storage chamber and a second storage chamber; A compression unit including a first compressor and a second compressor connected in parallel with a refrigerant passage; A condenser for condensing the refrigerant compressed by the compression unit; A first evaporator for cooling the first storage chamber; A second evaporator connected in parallel with the first evaporator and the refrigerant passage and cooling the second storage chamber; A first expansion mechanism disposed between the first evaporator and the condenser; And a second expansion mechanism disposed between the second evaporator and the condenser, wherein the compression section is configured such that at least one of the first storage chamber and the second storage chamber is overloaded or the first storage chamber and the second storage chamber In the freezing mode, the first compressor and the second compressor are operated; otherwise, the first compressor is operated and the second compressor is not operated.

The overload may be a first overload temperature in which the temperature of the first storage chamber is higher than the first storage chamber control upper limit temperature or a second overload temperature in which the temperature of the second storage chamber is set higher than the second storage chamber control upper limit temperature.

A refrigerator according to the present invention includes: a main body having a first storage chamber and a second storage chamber; A compression unit including a first compressor and a second compressor connected in parallel with a refrigerant passage; A condenser for condensing the refrigerant compressed by the compression unit; A first evaporator for cooling the first storage chamber; A second evaporator connected in parallel with the first evaporator and the refrigerant passage and cooling the second storage chamber; A first expansion mechanism disposed between the first evaporator and the condenser; And a second expansion mechanism disposed between the second evaporator and the condenser, wherein the first compressor and the second compressor are operated when the first storage chamber and the second storage chamber are in a freezing mode, When the second storage room is in the refrigerating mode, the first compressor is operated and the second compressor is not operated.

The operation of the first compressor and the operation of the second compressor may be driven if at least one of the first storage chamber and the second storage chamber is thermionic and both the first storage chamber and the second storage chamber may be stopped when the thermostat is off.

 A refrigerator according to the present invention includes: a main body having a first storage chamber and a second storage chamber; A first cooling circuit in which a first refrigerant circulates through a first compressor, a common condenser, a first expansion mechanism and a first evaporator, and the first evaporator cools the first storage chamber; And a second cooling circuit for circulating the second refrigerant through the second compressor, the common condenser, the second expansion mechanism, and the second evaporator, and the second evaporator for cooling the second storage chamber, Mode and the second storage compartment is in the off mode, the first compressor is operated and the first compressor is not operated, the first storage compartment is in the off mode and the second storage compartment is in the on mode The first compressor is operated and the second compressor is operated when the first storage chamber and the second storage chamber are both in the on mode, The third mode is performed.

The operation of the first compressor may be such that the first compressor is driven when the first storage chamber is thermionic, and the first compressor may be stopped when the first storage chamber is thermo-off.

The operation of the second compressor may be such that the second compressor is driven when the second storage chamber is thermionic, and the second compressor may be stopped when the second storage chamber is thermo-off.

And a first evaporator fan circulating air in the first storage room to the first evaporator and the first storage room, wherein the first evaporator fan can be driven when the first compressor is driven

And a second evaporator fan circulating the air in the second storage room to the second evaporator and the second storage room. The second evaporator fan may be driven when the second compressor is driven.

And a common condensing fan for blowing air to the common condenser. The common condensing fan may be driven when at least one of the first compressor and the second compressor is driven.

The present invention judges whether the refrigerator is in a low load operation mode in which only one compressor is to be operated or in a high load operation mode in which both compressors are operated by judging the freezing mode of the Kimchi refrigerator and the sudden load input and the ambient temperature condition in which the Kimchi refrigerator is operated It is possible to prevent the deterioration of the efficiency in the kimchi storage mode which is the main operation mode, and the power consumption can be improved.

The present invention is advantageous in that two cooling circuits are operated when the food storage amount such as Kim Jang Chul is large and power consumption can be improved by operating only one refrigeration circuit when there is no need to cool some of the plurality of storage rooms.

1 is a perspective view of one embodiment of a Kimchi refrigerator according to the present invention,
2 is a view showing a refrigerant flow when both the first compressor and the second compressor of the Kimchi refrigerator according to the present invention are operated.
FIG. 3 is a view showing a refrigerant flow when one of the first compressor and the second compressor in the embodiment of the Kimchi refrigerator according to the present invention is in operation and the other is in a non-empty state;
FIG. 4 is a control block diagram of a Kimchi refrigerator according to an embodiment of the present invention.
FIG. 5 is a flowchart of an operation method of a Kimchi refrigerator according to the present invention,
6 is a view showing the flow of refrigerant when the first storage room of the other embodiment of the Kimchi refrigerator according to the present invention is solely turned on;
7 is a view showing the flow of refrigerant when the second storage room of the other embodiment of the Kimchi refrigerator according to the present invention is turned on alone;
FIG. 8 is a view showing a flow of refrigerant when both the first storage chamber and the second storage chamber are turned on in another embodiment of the Kimchi refrigerator according to the present invention.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

FIG. 1 is a perspective view of one embodiment of a kimchi refrigerator according to the present invention, FIG. 2 is a view showing a flow of a refrigerant when both the first compressor and the second compressor are operated in a Kimchi refrigerator according to an embodiment of the present invention, FIG. 4 is a view illustrating a control of the Kimchi refrigerator according to an embodiment of the present invention; and FIG. 4 is a view illustrating a control of the Kimchi refrigerator according to the first embodiment of the present invention. Block diagram.

The Kimchi refrigerator includes a main body 6 having a first storage room 2 and a second storage room 4. The Kimchi refrigerator includes a cooling circuit (8) in which the refrigerant can cool both the first storage room (2) and the second storage room (4).

In the body 6, the first storage chamber 2 and the second storage chamber 4 may be formed independently of each other. The first storage chamber (2) and the second storage chamber (4) can be constituted by independent cooling chambers in which air is not mixed with each other. The first storage chamber (2) and the second storage chamber (4) may be vertically spaced or horizontally spaced apart. The first storage chamber (2) and the second storage chamber (4) can be partitioned by a barrier (12). The first storage chamber (2) may be provided in the body (6). The second storage chamber (4) may be provided in the main body (2) in a single or plural number. When two storage rooms are formed, one of them can be the first storage room (2), and the other one can be the second storage room (4). When three storage rooms are formed, the two storage rooms of the Kimchi refrigerator can be the first storage room 2, and the other one of the three storage rooms can be the second storage room 4. When four storage rooms are formed, two storage rooms of the kimchi refrigerator may be the first storage room 2, and the remaining two storage rooms may be the second storage room 4. When the four storage compartments are formed, the Kimchi refrigerator can be positioned with the upper left storage compartment and the upper right storage compartment to be divided into left and right compartments, and the central storage compartment can be positioned below the left upper storage compartment and the right upper storage compartment, The lower storage compartment can be located. In this case, either one of the upper left storage compartment and the upper right storage compartment, the central storage compartment and the lower storage compartment may be the first storage compartment 2, and the other one of the upper left compartment and the right upper compartment, And the other of the lower storage compartments may be the second storage compartment 4. Meanwhile, when four storage rooms are formed, the three storage rooms of the Kimchi refrigerator may be the first storage room 2 and the other storage room may be the second storage room 4. The present invention is not limited to the number of storage chambers but may be applied to five or more storage chambers.

The main body 6 may include a first storage chamber door 14 for opening and closing the first storage chamber 2 and a second storage chamber door 16 for opening and closing the second storage chamber 4. The main body 6 includes an outer case 22 forming an outer appearance of the kimchi refrigerator, a first storage compartment inner case 24 disposed inside the outer case 22 and having a first storage compartment 2 formed therein, And a second storage compartment inner case 26 disposed inside the case 22 and having a second storage compartment 4 formed therein. A machine room (not shown) may be formed in the main body 6. The machine room can be formed at the lower rear of the main body 6. [ The machine room may be formed long in the left and right direction in the main body 6. [ The first compressor 30 and the second compressor 40 of the cooling circuit 8, which will be described later, may be disposed in the machine room. In the machine room, a condenser 50 (to be described later) of the cooling circuit 8 may be disposed.

The cooling circuit 8 is a means for allowing the refrigerant to cool the first storage compartment 2 and the refrigerant to cool the second storage compartment 4 so that the refrigerant can flow into both the first storage compartment 2 and the second storage compartment 4 Can be cooled. The cooling circuit 8 includes a compression unit 30, a condenser 42, a first evaporator 50, a second evaporator 60, a first expansion mechanism 70, a second expansion mechanism 80 ).

The compression section 30 may include a first compressor 31 and a second compressor 32. The first compressor (31) and the second compressor (32) may be connected in parallel with the refrigerant passage. The compression section 30 may include a compressed portion suction flow path 33 in which the refrigerant is sucked into the first compressor 31 and the second compressor 32. The compression unit 30 may include a compression unit discharge passage 34 through which the refrigerant compressed in the first compressor 31 and the refrigerant compressed in the second compressor 32 are discharged. The first compressor (31) and the second compressor (32) can be connected in parallel with the refrigerant passage by the compressed air suction passage (33) and the compressed air discharge passage (34). The compression unit 30 may be different from the compression capacity of the first compressor 31 and the compression capacity of the second compressor 32. The first compressor 31 and the second compressor 32 of the compression unit 30 may be different from each other. It is possible that one of the first compressor 31 and the second compressor 32 is a constant speed compressor and the other one is a variable speed compressor such as a linear compressor. The first compressor 31 may be a compressor having the maximum compression capacity that can be accommodated when both the first storage chamber 2 and the second storage chamber 4 are in the kimchi storage mode. The first compressor 31 may be a compressor having a maximum compression capacity corresponding to any one of the first storage chamber 2 and the second storage chamber 4 in the Kimchi storage mode. The second compressor 32 is operated in such a manner that the ambient temperature of the refrigerator is higher than a temperature normally expected or the internal temperature of at least one of the first storage chamber 2 and the second storage chamber 4 is suddenly increased or the operation mode of the kimchi refrigerator And may be a compressor that operates when it is in an operation mode deviating from the usual use of a conventional Kimchi refrigerator. When the first compressor 31 is a main compressor, the second compressor 32 may be a sub compressor. It is preferable that the first compressor 31 is a compressor which is mainly driven and stopped when the kimchi refrigerator is used, and a compressor having high efficiency in the temperature range of the kimchi storage mode is used. It is preferable that the second compressor (32) is a kind of emergency compressor, and a compressor having excellent compression ability is used. The first compressor 31 may be constituted by an inverter compressor, and the second compressor 32 may be constituted by a constant speed compressor. It goes without saying that both the first compressor 31 and the second compressor 32 may be constituted by inverter compressors. When the kimchi refrigerator is operated in the kimchi storage mode, only the first compressor having high efficiency can be operated. When the heat load is increased, the second compressor can be operated together with the first compressor to cope with the rise of the heat insulating load.

The compression section suction flow path 33 includes a suction common flow path 35, a first compressor suction flow path 36 in which the refrigerant in the suction common flow path 35 is guided to be sucked into the first compressor 31, 35) is guided to be sucked into the second compressor (32).

The compression section discharge passage 34 is connected to the first compressor discharge passage 38 through which the refrigerant discharged from the first compressor 31 is guided and the second compressor discharge passage 38 through which the refrigerant discharged from the second compressor 32 is guided 39 and a discharge common flow passage 40 through which the refrigerant in the first compressor discharge passage 38 and the refrigerant in the second compressor discharge passage 39 are guided. The discharge common flow path 40 may be connected to the condenser 42.

In the condenser 42, the refrigerant compressed in the compressing section 30 can be condensed. The condenser 42 may be connected to the first expansion mechanism 70 and the second expansion mechanism 80 by a branch flow path 44. The branched flow path 44 includes a condenser outlet flow path 45 connected to the condenser 42, a flow control valve 46 provided in the condenser outlet flow path 45, and a refrigerant flow control valve 46 connected to the first expansion mechanism And a second expansion mechanism connecting flow path 48 in which the refrigerant of the flow control valve 46 is guided to the second expansion mechanism 80. The first expansion mechanism connecting flow path 47 is connected to the second expansion mechanism 80, In the case of driving at least one of the first compressor 31 and the second compressor 32, the flow control valve 46 is configured to guide the refrigerant to one of the first expansion device 70 and the second expansion device 80 It is possible.

The flow control valve 46 is driven by at least one of the first compressor 31 and the second compressor 32 and the first reservoir chamber 2 and the first reservoir chamber 2 of the second reservoir chamber 4 are thermionic And the refrigerant discharged from the condenser 42 can be guided to flow into the first expansion mechanism 70 when the second storage chamber 4 is thermo-off. The flow control valve 46 is opened when the first storage chamber 2 of the first storage chamber 2 and the second storage chamber 4 is thermostated and the second storage chamber 4 is thermionic, The refrigerant can be guided to flow to the second expansion mechanism (80). The flow regulating valve 46 is driven by at least one of the first compressor 31 and the second compressor 32 and the flow regulating valve 46 is switched between the first storage chamber 2 and the second storage chamber 4, If it is on, the refrigerant discharged from the condenser 42 may guide the refrigerant to flow to one of the first expansion mechanism 70 and the second expansion mechanism 80 and then to guide the refrigerant to the other. The flow control valve 46 may cause the refrigerant discharged from the condenser 42 to be alternately guided to the first expansion mechanism 70 and the second expansion mechanism 80. The flow control valve 46 is capable of guiding the refrigerant in the order of the first expansion mechanism 70-> the second expansion mechanism 80-> the first expansion mechanism 70-> the second expansion mechanism 80 , The second expansion mechanism (80), the first expansion mechanism (70), the second expansion mechanism (80), and the first expansion mechanism (70). The flow regulating valve 46 is driven by at least one of the first compressor 31 and the second compressor 32 and the flow regulating valve 46 is switched between the first storage chamber 2 and the second storage chamber 4, It goes without saying that the flow control valve 46 can guide the refrigerant to flow simultaneously into the first expansion device 70 and the second expansion device 80. [

The first evaporator (50) can cool the first storage chamber (2). The first evaporator 50 may be connected to the compressed-air suction flow path 33 and the first evaporator outlet flow path 52. The first evaporator outlet flow passage 52 may be connected to the suction common flow passage 35.

The second evaporator (60) may be connected to the first evaporator (30) in parallel with the refrigerant passage. And the second evaporator 60 can cool the second storage chamber 4. The second evaporator 60 may be connected to the compressed-air suction flow path 33 and the second evaporator outlet flow path 62. And the second evaporator outlet flow passage 62 may be connected to the suction common flow passage 35. The second evaporator outlet flow path 62 may constitute a lobe flow path 64 together with the first evaporator outlet flow path 52 and the suction common flow path 35.

The first expansion mechanism (70) may be disposed between the condenser (42) and the first evaporator (50). The first expansion mechanism (70) may be connected to the first evaporator (50) and the first evaporator inlet flow path (72). The first expansion mechanism (70) may be constituted by a capillary tube or a valve capable of opening degree adjustment.

The second expansion mechanism (80) may be disposed between the condenser (42) and the second evaporator (60). The second expansion mechanism (80) may be connected to the second evaporator (60) and the second evaporator inlet flow passage (82). The second expansion mechanism (80) can be composed of a capillary tube or a valve capable of opening degree adjustment.

The first evaporator 50 and the second evaporator 60 are connected in parallel to each other by the branch flow path 44 and the first evaporator inlet flow path 72 and the second evaporator inlet flow path 82 and the composite flow path 64, Can be connected.

The Kimchi refrigerator may include a condensing fan 43 for blowing air to the condenser 42. The condensing fan 43 may be driven when at least one of the first compressor 31 and the second compressor 32 is driven and both the first compressor 31 and the second compressor 32 may be stopped when the compressor is stopped. The kimchi refrigerator may include a first evaporator fan 56 for circulating the air in the first storage chamber 2 to the first evaporator 50 and the first storage chamber 2. The first evaporator fan 56 can be driven upon cooling of the first storage chamber 2 and stopped when the first storage chamber 2 is not cooled. The kimchi refrigerator may include a second evaporator fan 66 for circulating the air in the second storage chamber 4 to the second evaporator 60 and the second storage chamber 4. The second evaporator fan 66 can be driven upon cooling of the second storage chamber 4 and stopped when the second storage chamber 4 is not cooled.

The Kimchi refrigerator can be composed of a 2 COM-2 EVA system having two compressors 31 and 32 and two evaporators 50 and 60 and the first compressor 31 of the two compressors 31 and 32 And the second compressor 32 of the two compressors 31 and 32 can be operated in an auxiliary manner.

The kimchi refrigerator includes an input unit 91 for inputting a command by the user, a first storage room temperature sensor 92 for sensing the temperature of the first storage room 2, a second storage room 92 for sensing the temperature of the second storage room 2, And a temperature sensor 93. The kimchi refrigerator may further include an ambient temperature sensor 94 for sensing the ambient temperature.

The Kimchi refrigerator controls the Kimchi refrigerator according to the input of the input unit 91, the sensed temperature of the first storage room temperature sensor 92, the sensed temperature of the second storage room temperature sensor 93, and the sensed temperature of the ambient temperature sensor 94 And may further include a control unit 95.

The input unit 91 may receive an on-off mode of at least one of the first storage chamber 2 and the second storage chamber 4. Here, the on mode may be a mode in which the storage room is used, and the off mode may be a mode in which the storage room is not used. The input unit 91 can receive the ON and OFF modes of the first storage chamber 2 and the second storage chamber 4, respectively. The input unit 91 is capable of selectively receiving one of the plurality of storage modes so that the first storage room 2 is controlled in one of a plurality of storage modes. Here, the plurality of storage modes may be a kimchi storage mode, a cold storage mode, a freeze storage mode, and the like. The input unit 91 can receive the desired temperature of the first storage chamber 2. The input unit 91 is capable of selectively receiving one of the plurality of storage modes so that the second storage room 4 is controlled to one of a plurality of storage modes. Here, the plurality of storage modes may be a kimchi storage mode, a cold storage mode, a freeze storage mode, and the like. The input unit 91 can receive the desired temperature of the second storage chamber 4.

The control upper limit temperature of the first storage chamber 2 and the control lower limit temperature of the first storage chamber 2 are set for each specific storage mode when the storage mode of the first storage chamber 2 is selected as the specific storage mode It is possible. The control upper limit temperature of the first storage chamber 2 and the control lower limit temperature of the first storage chamber 2 can be set in accordance with the desired temperature of the first storage chamber 2, respectively. The first storage chamber 2 can be thermally turned on when the temperature of the first storage chamber 2 exceeds the control upper limit temperature of the first storage chamber 2 and the temperature of the first storage chamber 2 is maintained at the first storage chamber 2 2, the first storage chamber 2 may be thermally turned off. Here, the thermionic state of the first storage chamber 2 is a condition for driving the first compressor 31 and the second compressor 32 or driving the first compressor 31 to cool the first storage chamber 2 And the thermo-off of the first storage chamber 2 may be a condition for stopping the first compressor 31 and the second compressor 32 to stop the cooling of the first storage chamber 2.

The control upper limit temperature of the second storage chamber 4 and the control lower limit temperature of the second storage chamber 4 can be set respectively when the storage mode of the second storage chamber 4 is selected as the specific storage mode. The control upper limit temperature of the second storage chamber 4 and the control lower limit temperature of the second storage chamber 4 can be set in accordance with the desired temperature of the second storage chamber 4, respectively. The Kimchi refrigerator can thermally turn on the second storage compartment 4 when the temperature of the second storage compartment 4 exceeds the control upper limit temperature of the second storage compartment 4 and the temperature of the second storage compartment 4 is lowered to the second storage compartment 4, the second storage chamber 4 may be thermally turned off. Here, the thermion of the second storage chamber 4 is a condition for driving the first compressor 31 and the second compressor 32 or driving the first compressor 31 to cool the second storage chamber 4 And the thermo-off of the second storage chamber 4 may be a condition for stopping the first compressor 31 and the second compressor 32 to stop the cooling of the second storage chamber 10.

In the Kimchi refrigerator, the first storage room (2) and the second storage room (4) may both be in the kimchi storage mode. The kimchi refrigerator may be one of the first storage room (2) and the second storage room (4) when the first storage room (2) and the second storage room (4) are in the kimchi storage mode. In the Kimchi refrigerator, the first storage chamber (2) and the second storage chamber (4) may both be in the freezing mode. The Kimchi refrigerator may be different from the first storage room control upper limit temperature and the first storage room control lower limit temperature when the kimchi storage mode and the refrigeration mode are respectively set. The first storage compartment control lower limit temperature when the first storage compartment 2 is in the freezing mode may be lower than the first storage compartment control lower limit temperature when the first storage compartment 2 is in the kimchi storage mode. The upper limit temperature of the first storage chamber when the first storage chamber 2 is in the freezing mode may be lower than the upper limit temperature of the first storage chamber when the first storage chamber 2 is in the kimchi storage mode. The Kimchi refrigerator may be different from each other in the case where the upper limit temperature of the second storage room and the lower limit temperature of the second storage room are both the kimchi storage mode and the refrigeration mode. The second storage compartment control lower limit temperature when the second storage compartment 4 is in the freezing mode may be lower than the second storage compartment control lower limit temperature when the second storage compartment 4 is in the kimchi storage mode. The second storage room control upper limit temperature when the second storage room 4 is in the freezing mode may be lower than the second storage room control upper limit temperature when the second storage room 4 is in the kimchi storage mode.

The ambient temperature sensor 94 may be installed at one side of the main body 6, the first storage chamber door 14 and the second storage chamber door 16. The ambient temperature sensor 94 can sense the ambient temperature of the place where the Kimchi refrigerator is installed. The ambient temperature sensor 94 senses the temperature and outputs the sensed temperature to the control unit 95. The control unit 95 can determine whether the second compressor 32 is operating according to the signal output from the ambient temperature sensor 94 have.

If at least one of the first storage chamber 2 and the second storage chamber 4 is overloaded or the first storage chamber 2 and the second storage chamber 4 are in the freezing mode As shown in FIG. 2, the first compressor 31 and the second compressor 32 can be operated, and as shown in FIG. 3, the first compressor 31 is operated and the second compressor 31 is operated, (32) may be non-operated.

Here, the operation of the first compressor 31 and the operation of the second compressor 32 can be driven and stopped corresponding to the loads of the first storage chamber 2 and the second storage chamber 4. The operation of the first compressor 31 and the operation of the second compressor 32 are driven when at least one of the first storage chamber 2 and the second storage chamber 4 is thermionic and the first storage chamber 2 and the second compressor If both the storage rooms 4 are thermo-off, they can be stopped. The first compressor 31 can be driven if at least one of the first storage chamber 2 and the second storage chamber 4 is thermionic and both the first storage chamber 2 and the second storage chamber 4 are thermo- , It can be stopped. The second compressor 32 can be driven if at least one of the first storage chamber 2 and the second storage chamber 4 is thermionic and both the first storage chamber 2 and the second storage chamber 4 are thermo- , It can be stopped.

The first compressor 31 and the second compressor 32 can be operated under the condition that the ambient temperature is equal to or higher than the external set temperature (first condition) regardless of the storage mode input to the input unit 51 have. Here, the ambient temperature may be the temperature sensed by the ambient temperature sensor 94, and the externally set temperature is a temperature at which the insulation performance of the refrigerator falls below the reference value. The external set temperature may be the temperature when the temperature of the place where the refrigerator is installed is high enough to affect the performance of the Kimchi refrigerator. For example, assuming that the refrigerator is installed in a place where the refrigerator is normally at -10 ° C to 30 ° C, the external set temperature may be set at 35 ° C, which is an excessively high temperature at the place where the refrigerator is installed. When the ambient temperature is equal to or higher than the external set temperature (the first condition), the two compressors 31 and 32 are operated together to quickly respond to a large external load .

The compression unit 30 compresses the refrigerant discharged from the first compressor 31 when the first storage chamber 2 and the second storage chamber 4 are overloaded (second condition) regardless of the storage mode input to the input unit 51. [ And the second compressor 32 can be operated. Here, the overload may be a load that is equal to or higher than the first overload temperature at which the temperature of the first storage chamber 2 is set higher than the upper limit temperature of the first storage chamber. Also, the overload may be a load that is higher than the second overload temperature at which the temperature of the second storage chamber 4 is set higher than the upper limit temperature of the second storage chamber. Here, the first overload temperature may be a temperature when the temperature of the first storage chamber 2 is raised to a temperature higher than the control temperature range of the first storage chamber by the first set temperature, and the first overload temperature may be lower than the control upper- May be a temperature set to a high temperature (for example, 3 to 5 DEG C). The second overload temperature may be a temperature when the temperature of the second storage chamber 2 is raised to a temperature higher than the control temperature range of the second storage chamber by a second set temperature, May be a temperature set to a high temperature (for example, 3 to 5 DEG C). For example, when the control upper limit temperature of the first storage chamber 2 is 1 占 폚 and the control lower limit temperature of the first storage chamber 2 is -1 占 폚, the first overload temperature may be 6 占 폚. When the control upper limit temperature of the second storage chamber 2 is -15 占 폚 and the control lower limit temperature of the second storage chamber 4 is -17 占 폚, the second overload temperature may be -10 占 폚. When the user inserts new food into the kimchi refrigerator and opens the first storage chamber door or the second storage chamber door for a long time, overload may occur when the first storage chamber door or the second storage chamber door is frequently opened and closed, The refrigerator needs to respond quickly to these overloads. The Kimchi refrigerator has two compressors 31 (32) and 32 (32) in a case where at least one of the first storage chamber 2 and the second storage chamber 4 is overloaded (second condition) ) Can be operated together to quickly cope with the fluctuation of the load.

The first compressor 31 and the second compressor 32 can be operated when the first storage chamber 2 and the second storage chamber 4 are both in the freezing mode (third condition) . When the kimchi refrigerator is mainly a refrigerator for storing kimchi at a low temperature and the first compressor 31 is driven by a second compressor 32 only when necessary with the compressor having a capacity suitable for the kimchi storage temperature, The power consumption can be reduced as compared with the case where the large compressor is controlled by the inverter.

The compressor 30 can operate only the first compressor 31 and the second compressor 31 can be operated if the Kimchi refrigerator is not under any of the first condition, the second condition, and the third condition. The first compressor 31 can be driven and stopped corresponding to the loads of the first storage chamber 2 and the second storage chamber 4. [ The first compressor 31 can be driven if at least one of the first storage chamber 2 and the second storage chamber 4 is thermionic and the first storage chamber 2 and the second storage chamber 4 are both thermo- , It can be stopped.

On the other hand, if the first storage chamber 2 and the second storage chamber 4 are both in the freezing mode (the third condition) in consideration of the third condition, without considering the first condition and the second condition, Only the first compressor 31 is operated when the first compressor 31 and the second compressor 32 are operated and both the first storage chamber 2 and the second storage chamber 4 are in the kimchi storage mode, It is of course possible that the motor 31 is not operated. That is, when the first storage chamber 2 and the second storage chamber 4 are in the freezing mode, the first compressor 31 and the second compressor 32 are operated regardless of the ambient temperature or the overload, It is of course possible that the first compressor 2 is operated and the second compressor 4 is not operated regardless of the ambient temperature or the overload when the first and second storage chambers 2 and 4 are in the refrigerating mode.

5 is a flowchart of an operation method of a Kimchi refrigerator according to an embodiment of the present invention.

First, when the power is inputted, the first storage room temperature sensor 92 senses the temperature of the first storage room 2 and the second storage room temperature sensor 93 senses the temperature of the second storage room 2 And the ambient temperature sensor 94 can sense the ambient temperature.

The Kimchi refrigerator can operate the first compressor 31 and the second compressor 32 irrespective of an overload or a storage mode when the ambient temperature sensor 94 has an ambient temperature equal to or higher than the external preset temperature.

When the temperature of the first storage chamber 2 is equal to or higher than the first overload temperature or the temperature of the second storage chamber 4 is equal to or higher than the second overload temperature, 2 compressor 32. (S2) (S4)

The Kimchi refrigerator can operate the first compressor 31 and the second compressor 32 regardless of the ambient temperature or the overload when the first storage chamber 2 is in the freezing mode and the second storage chamber 4 is in the freezing mode. (S3) (S4)

The Kimchi refrigerator is configured such that the ambient temperature sensor 94 has an ambient temperature lower than the external set temperature and the temperature of the first storage chamber 2 is lower than the first overload temperature and the temperature of the second storage chamber 4 is lower than the second overload temperature Only the first compressor 31 can be driven if both the first storage chamber 2 and the second driving room 4 are not in the freezing mode (S1) (S2) (S3) (S5)

FIG. 6 is a view showing the flow of the refrigerant when the first storage room of the other embodiment of the present invention is solely on, FIG. 7 is a view showing a refrigerant flow FIG. 8 is a view showing the flow of the refrigerant when the first storage room and the second storage room are both turned on in another embodiment of the Kimchi refrigerator according to the present invention.

The Kimchi refrigerator of the present embodiment includes a first cooling circuit 108 through which the first refrigerant circulates and a second cooling circuit 110 through which the second refrigerant circulates. The first cooling circuit 108 can cool the first storage chamber 2 with the first refrigerant and the second cooling circuit 110 can cool the second storage chamber 4 with the second refrigerant. The other components and functions of the main body 6 and the input unit 91 other than the first cooling circuit 108 and the second cooling circuit 110 are the same as or similar to those of the embodiment of the present invention, A detailed description thereof will be omitted.

The first cooling circuit 108 circulates the first refrigerant through the first compressor 132, the common condenser 134, the first expansion mechanism 136 and the first evaporator 138, and the first evaporator 138 Thereby cooling the first storage chamber (2).

The second cooling circuit 110 circulates the second refrigerant through the second compressor 142, the common condenser 134, the second expansion device 146 and the second evaporator 148, and the second evaporator 148 Thereby cooling the second storage chamber 4.

 The first compressor 132 of the first cooling circuit 108 and the second compressor 142 and the common condenser 134 of the second cooling circuit 110 may be disposed in the machine room of the main body 6. [

The first cooling circuit 108 and the second cooling circuit 110 can cool the first storage chamber 2 and the second storage chamber 4 independently. The first refrigerant of the first cooling circuit 108 and the second refrigerant of the second cooling circuit 110 are not mixed with each other and the first and second cooling circuits 108 and 110 circulate independently . It is possible to use different types of refrigerants for the first refrigerant and the second refrigerant, and it is possible to use the same kind of refrigerant.

The common condenser 134 may include a first tube through which the first refrigerant flows, a second tube through which the second refrigerant flows, and a common pin coupled with the first tube and the second tube. The common condenser 134 can be formed independently of the flow path of the first tube and the flow path of the second tube without being mixed with each other, and a common fin can be commonly used.

 The input unit 91 can selectively receive an on mode in which the temperature of the first storage chamber 2 is controlled and an off mode in which the first storage chamber 2 is not controlled in temperature. The user can input the stored contents into the first storage room 2 and input the stored contents in the on mode of the first storage room 2 through the input unit 91. The user can input the off mode of the first storage room 2 through the input unit 91 As shown in FIG. The Kimchi refrigerator can cool the first storage chamber 2 according to the load in the on mode of the first storage chamber 2 and can not control the temperature of the first storage chamber 2 in the off mode. The input unit 91 can selectively receive an on mode in which the temperature of the second storage chamber 4 is controlled and an off mode in which the second storage chamber 4 is not controlled in temperature. The user can input the stored contents into the second storage room 4 and enter the on mode of the second storage room 4 through the input unit 91. The user can input the off mode of the second storage room 4 through the input unit 91, As shown in FIG. The Kimchi refrigerator can cool the second storage chamber 4 according to the load in the on mode of the second storage chamber 4 and can not control the temperature of the second storage chamber 4 in the off mode.

The Kimchi refrigerator performs the first mode in which the first compressor (132) is operated and the second compressor (142) is not operated when the first storage chamber (2) is in the on mode and the second storage chamber can do. The first mode may be the first storage chamber only cooling mode and only the first compressor 132 may be driven and stopped according to the load in a state where the second compressor 142 is not driven and stopped. The operation of the first compressor 132 can be started when the first storage chamber 2 is thermionic when the first storage chamber 2 is in the on mode and can be stopped when the first storage chamber 2 is thermo-off . During the first mode, the temperature of the first storage compartment 2 can be raised or lowered according to the passage of time or the variation of the load, and the first compressor 132 can alternately repeat driving and stopping . The second compressor (142) can remain stationary in the first mode.

The Kimchi refrigerator performs the second mode in which the second compressor 142 is operated and the first compressor 132 is not operated when the first storage chamber 2 is in the off mode and the second storage chamber 4 is in the on mode can do. The second mode may be the second storage room only cooling mode, and only the second compressor 142 can be driven and stopped according to the load in a state where the first compressor 132 is not driven and stopped. The operation of the second compressor 142 can be driven when the second storage chamber 4 is thermionic when the second storage chamber 4 is in the on mode and can be stopped if the second storage chamber 4 is thermo- . While the Kimchi refrigerator is in the second mode, the temperature of the second storage chamber (4) can be raised or lowered according to the lapse of time or load variation, and the second compressor (142) can alternately repeat driving and stopping . The first compressor (132) can remain stationary in the second mode.

The Kimchi refrigerator can perform the third mode in which the first compressor 132 is operated and the second compressor 142 is operated when both the first storage chamber 2 and the second storage chamber 4 are in the on mode. The third mode may be a simultaneous cooling mode of the first storage chamber and the second storage chamber, and the first compressor 132 and the second compressor 142 may be independently driven and stopped. The operation of the first compressor 132 can be started when the first storage chamber 2 is thermionic when the first storage chamber 2 is in the on mode and can be stopped when the first storage chamber 2 is thermo-off . During the third mode, the temperature of the first storage chamber 2 can be raised or lowered according to the passage of time or the variation of the load, and the first compressor 132 can alternately repeat driving and stopping . And the second compressor 142 can maintain the stop state in the third mode. The operation of the second compressor 142 can be driven when the second storage chamber 4 is thermionic when the second storage chamber 4 is in the on mode and can be stopped if the second storage chamber 4 is thermo- . While the Kimchi refrigerator is in the third mode, the temperature of the second storage chamber 4 can be raised or lowered depending on the passage of time or the variation of the load, and the second compressor 142 can alternately repeat driving and stopping . The first compressor (132) can remain stationary in the third mode.

Hereinafter, the third mode will be described in detail as follows.

If the first storage chamber 2 is in the third mode and the second storage chamber 4 is thermo-off, the first compressor 132 may be driven and the second compressor 142 may be stopped.

 If the first storage chamber 2 is in the third mode and the second storage chamber 4 is thermionic, the second compressor 142 may be driven and the first compressor 132 may be stopped.

 The first compressor 132 and the second compressor 34 can be respectively driven when the first storage chamber 2 and the second storage chamber 4 are both thermionic.

  The kimchi refrigerator may include a first evaporator fan 152 for circulating air in the first storage chamber 2 to the first evaporator 138 and the first storage chamber 2. The Kimchi refrigerator may include a second evaporator fan 148 for circulating the air in the second storage chamber 4 to the second evaporator 148 and the second storage compartment 4. The Kimchi refrigerator may include a common condensing fan 156 for blowing air to the common condenser 134.

 The first evaporator fan 152 may be driven when the first compressor 132 is driven.

And the second evaporator fan 154 may be driven when the second compressor 142 is driven.

The common condensing fan 156 may be driven when at least one of the first compressor 132 and the second compressor 34 is driven.

Hereinafter, the operation of the present invention will be described.

First, the operation of the first mode will be described in detail as follows.

When the first storage chamber 2 is in the on mode and the second storage chamber 4 is in the off mode and the first storage chamber 2 is thermionic, the first compressor 132, the first evaporator fan 152, The fan 156 can be driven and the second compressor 142 and the second evaporator fan 154 can be stopped. When the first compressor 132 is driven, the first refrigerant passes through the first compressor 132, the common condenser 134, the first expansion mechanism 136, and the first evaporator 138 And may be introduced into the first compressor 132 after passing through the first compressor 132 in sequence. The first refrigerant is compressed in the first compressor 132 and then can be flowed to the common condenser 134 and heat exchanged with the air blown from the common condensing fan 156 while passing through the common condenser 134 to be condensed. The first refrigerant condensed in the common condenser 134 can be expanded in the first expansion mechanism 136 and then flowed to the first evaporator 138. The first refrigerant flowing into the first evaporator 138 may be heat-exchanged with the air flowing in the first storage chamber 138 and may be evaporated and flow to the first compressor 132. The air exchanged with the first refrigerant in the first evaporator 138 may be blown into the first storage chamber 138 to cool the first storage chamber 138. The first storage chamber 2 can be gradually cooled by the first refrigerant and the first storage chamber 2 can be thermally turned off over time.

When the first storage chamber 2 is in the on mode and the second storage chamber 4 is in the off mode and the first storage chamber 2 is thermo-off, the first condenser 132, the first evaporator fan 152, The fan 156 can be stopped and the second compressor 142 and the second evaporator fan 154 can be kept stationary. The first refrigerant does not circulate through the first cooling circuit 108 and the first storage chamber 2 can be heated up if time passes or new storage is introduced from the outside. The first storage chamber 2 can be thermally turned on by the passage of time or by the addition of new storage material.

When the first storage compartment 2 is in the on mode and the second storage compartment 4 is in the off mode, the kimchi refrigerator is switched between the first compressor 132 and the first compressor The evaporator fan 152 and the common condensing fan 156 may be driven or stopped while the second compressor 142 and the second evaporator fan 154 may be continuously stopped.

The operation of the second mode will be described in detail as follows.

When the first storage chamber 2 is in the off mode and the second storage chamber 4 is in the on mode and the second storage chamber 4 is thermionic, the second compressor 142, the second evaporator fan 154, The fan 156 may be driven and the first compressor 132 and the first evaporator fan 152 may be stationary. When the second compressor 142 is driven, the second refrigerant is supplied to the second compressor 142, the common condenser 134, the second expansion mechanism 146, and the second evaporator 148 And may be introduced into the second compressor 142 after passing sequentially. The second refrigerant is compressed in the second compressor 142 and then can be flowed to the common condenser 134 and heat exchanged with the air blown from the common condensing fan 156 while passing through the common condenser 134 to be condensed. The second refrigerant condensed in the common condenser 134 can be expanded in the second expansion mechanism 146 and then flowed to the second evaporator 148. The second refrigerant flowing into the second evaporator 148 may be evaporated and flowed to the second compressor 142 by exchanging heat with the air flowing in the second storage chamber 148. Meanwhile, the air exchanged with the second refrigerant in the second evaporator 148 may be blown into the second storage chamber 148 to cool the second storage chamber 148. The second storage chamber 4 can be gradually cooled by the second refrigerant and the second storage chamber 4 can be thermally turned off over time.

When the first storage chamber 2 is in the off mode and the second storage chamber 4 is in the on mode and the second storage chamber 4 is thermo-off, the second compressor 142 and the second evaporator fan 154, The fan 156 can be stopped and the first compressor 132 and the first evaporator fan 152 can be kept stationary. The second refrigerant does not circulate through the second cooling circuit 110 and the second storage chamber 4 can be heated up when a time has elapsed or a new storage is introduced from the outside. The second storage room (4) can be thermally turned on by the passage of time or by the addition of new storage.

When the first storage chamber 2 is in the off-mode and the second storage chamber 4 is in the on-mode, the kimchi refrigerator is switched between the second compressor 142 and the second The evaporator fan 154 and the common condensing fan 156 may be driven or stopped while the first compressor 132 and the first evaporator fan 152 may be continuously stopped.

The operation of the third mode will be described in detail as follows.

When the first storage chamber 2 is in the on mode and the second storage chamber 4 is in the on mode and the first storage chamber 2 and the second storage chamber 4 are thermionic respectively, The evaporator fan 152, the second compressor 142, the second evaporator fan 154, and the common condensing fan 156 may be driven. As shown in FIG. 4, when the first compressor 132 is driven, the first refrigerant passes through the first compressor 132, the common condenser 134, the first expansion mechanism 136, and the first evaporator 138 The second refrigerant may flow through the second compressor 142 and the common condenser 134 as shown in FIG. 8, and the second refrigerant may flow into the first compressor 132, The second expansion mechanism 146, and the second evaporator 148, and then may be introduced into the second compressor 142. The air exchanged with the first refrigerant in the first evaporator 138 may be blown into the first storage chamber 138 to cool the first storage chamber 138. The first storage chamber (2) can be gradually cooled by the first refrigerant. The air exchanged with the second refrigerant in the second evaporator 148 may be blown into the second storage chamber 148 to cool the second storage chamber 148. The second storage chamber (4) can be gradually cooled by the second refrigerant. The first storage compartment 2 is thermally turned off or the second storage compartment 4 is thermally turned off while the kimchi refrigerator is in the third mode. The first compressor 132 is connected to the first storage compartment The second compressor 142 can be driven and stopped in accordance with the thermostated on and off of the second storage chamber 4 regardless of the first storage chamber 2 have. When the first storage chamber 2 is thermionic in the middle of the third mode and the second storage chamber 4 is thermally turned off, the first compressor 132, the first evaporator fan 152 and the common condensing fan 156 And the second compressor 142 and the second evaporator fan 154 can be stopped by the thermo-off of the second storage chamber 4. Conversely, if the second storage compartment 4 is thermionic during the third mode and the first storage compartment 2 is thermally turned off, the second compressor 142, the second evaporator fan 154 and the common condensing fan 156 May be continuously driven and the first compressor 132 and the first evaporator fan 152 may be stopped by thermo-off of the first storage chamber 2. [ The Kimchi refrigerator may have a time when the first storage room 2 and the second storage room 4 are both turned off during the third mode. In this case, the Kimchi refrigerator may include a first compressor 132 and a first evaporator fan 152, the second compressor 142, the second evaporator fan 154, and the common condensing fan 156 may both be stationary. The first compressor 132 and the first evaporator fan 152 can be driven and stopped according to the thermo-on and off of the first storage chamber 2 while the Kimchi refrigerator is in the third mode and the second compressor 142, And the second evaporator 154 can be driven and stopped according to the thermionic and the off-state of the second storage chamber 2.

2: first storage room 4: second storage room
6: Main body 8: Cooling circuit
30: compression section 31: first compressor
32: second compressor 42: condenser
50: first evaporator 60: second evaporator
70: first expansion mechanism 80: second expansion mechanism
91: input unit 92: first storage room temperature sensor
93: second storage room temperature sensor 94: ambient temperature sensor
95:

Claims (10)

A main body having a first storage chamber and a second storage chamber;
A compression unit including a first compressor and a second compressor connected in parallel with a refrigerant passage;
A condenser for condensing the refrigerant compressed by the compression unit;
A first evaporator for cooling the first storage chamber;
A second evaporator connected in parallel with the first evaporator and the refrigerant passage and cooling the second storage chamber;
A first expansion mechanism disposed between the first evaporator and the condenser;
And a second expansion mechanism disposed between the second evaporator and the condenser,
The compression unit
The first compressor and the second compressor are operated when the ambient temperature is the external set temperature or at least one of the first storage chamber and the second storage chamber is overloaded or the first storage chamber and the second storage chamber are in the freezing mode,
Otherwise, the first compressor is operated and the second compressor is not operated. The method according to claim 1,
The operation of the first compressor and the operation of the second compressor may be performed by,
If at least one of the first storage chamber and the second storage chamber is thermionic,
Wherein both the first storage room and the second storage room are stationary when the thermostat is off. 3. The method according to claim 1 or 2,
The overload
Wherein the temperature of the first storage chamber is equal to or higher than a first overload temperature at which the temperature of the first storage chamber is set higher than the upper limit temperature of the first storage chamber, or the second overload temperature is higher than the second storage chamber control upper limit temperature. A main body having a first storage chamber and a second storage chamber;
A compression unit including a first compressor and a second compressor connected in parallel with a refrigerant passage;
A condenser for condensing the refrigerant compressed by the compression unit;
A first evaporator for cooling the first storage chamber;
A second evaporator connected in parallel with the first evaporator and the refrigerant passage and cooling the second storage chamber;
A first expansion mechanism disposed between the first evaporator and the condenser;
And a second expansion mechanism disposed between the second evaporator and the condenser,
The compression unit
Wherein the first compressor and the second compressor are operated when the first storage chamber and the second storage chamber are in the freezing mode,
Wherein the first compressor is operated and the second compressor is not operated when the first storage chamber and the second storage chamber are in the refrigerating mode. 5. The method of claim 4,
The operation of the first compressor and the operation of the second compressor may be performed by,
If at least one of the first storage chamber and the second storage chamber is thermionic,
Wherein both the first storage room and the second storage room are stationary when the thermostat is off. A main body having a first storage chamber and a second storage chamber;
A first cooling circuit in which a first refrigerant circulates through a first compressor, a common condenser, a first expansion mechanism and a first evaporator, and the first evaporator cools the first storage chamber;
And a second cooling circuit for circulating the second refrigerant through the second compressor, the common condenser, the second expansion mechanism and the second evaporator, and the second evaporator for cooling the second storage chamber,
A first mode in which the first compressor is operated and the first compressor is not operated when the first storage chamber is in an on mode and the second storage chamber is in an off mode,
A second mode in which the second compressor is operated and the first compressor is not operated when the first storage chamber is in an off mode and the second storage chamber is in an on mode,
And a third mode in which the first compressor is operated and the second compressor is operated when the first storage room and the second storage room are both in an on mode. The method according to claim 6,
Wherein the operation of the first compressor is such that the first compressor is driven when the first storage chamber is thermionic and the first compressor is stopped when the first storage chamber is thermo-
Wherein the operation of the second compressor is such that the second compressor is driven when the second storage chamber is thermionic and the second compressor is stopped when the second storage chamber is thermo-off. 8. The method of claim 7,
Further comprising a first evaporator fan circulating air in the first storage room to the first evaporator and the first storage room,
Wherein the first evaporator fan is driven when the first compressor is driven. 9. The method according to claim 7 or 8,
And a second evaporator fan circulating air in the second storage room to the second evaporator and the second storage room,
And the second evaporator fan is driven when the second compressor is driven. 8. The method of claim 7,
Further comprising a common condensing fan for blowing air to the common condenser,
Wherein the common condensing fan is driven when at least one of the first compressor and the second compressor is driven.

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