Patent Publication Number: US-11397048-B2

Title: Refrigerator

Description:
CROSS-REFERENCE TO RELATED APPLICATION(S) 
     This application claims priority under 35 U.S.C. 119 and 35 U.S.C. 365 to Korean Patent Application No. 10-2019-0003593, filed in Korea on Jan. 10, 2019, the entire contents of which are hereby incorporated by reference. 
     BACKGROUND 
     1. Field 
     The present disclosure relates to a refrigerator. 
     2. Background 
     A refrigerator is an appliance that allows food or other goods to be stored at a relatively low temperature in an internal storage space accessed by a door. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
       Embodiments will be described in detail with reference to the following drawings in which like reference numerals refer to like elements, and wherein: 
         FIG. 1  is a sectional view illustrating an example of a refrigerator according to an embodiment of the present disclosure; 
         FIG. 2  is a sectional view illustrating another example of a refrigerator according to an embodiment of the present disclosure; 
         FIG. 3  is a front view when a refrigerator according to an embodiment of the present disclosure is disposed adjacent to another refrigerator; 
         FIG. 4  is a view illustrating on and off of cooling device and on and off of heating device according to the temperature change of the storage chamber according to an embodiment of the present disclosure; 
         FIGS. 5 to 8  are views illustrating examples of a refrigeration cycle of a refrigerator according to an embodiment of the present disclosure; 
         FIG. 9  is a control block diagram of a refrigerator according to an embodiment of the present disclosure; 
         FIG. 10  is a perspective view illustrating a see-through door of a refrigerator according to an embodiment of the present disclosure; 
         FIG. 11  is a plan view when an example of a door according to an embodiment of the present disclosure is opened in a door opening module; 
         FIG. 12  is a cross-sectional view when another example of a door according to an embodiment of the present disclosure is opened by the door opening module; 
         FIG. 13  is a sectional view when a holder illustrated in  FIG. 12  is lifted; 
         FIG. 14  is a front view illustrating a storage chamber of a refrigerator according to an embodiment of the present disclosure; 
         FIG. 15  is a rear view illustrating an inner portion of the inner guide according to an embodiment of the present disclosure; 
         FIG. 16  is a flowchart illustrating a first example of operation of a refrigerator in accordance with an embodiment of the present disclosure; 
         FIG. 17  is a flowchart illustrating a second example of the operation of a refrigerator in accordance with an embodiment of the present disclosure; 
         FIG. 18  is a flowchart illustrating a third example of the operation of a refrigerator in accordance with an embodiment of the present disclosure; and 
         FIG. 19  is a flowchart illustrating a fourth example of the operation of a refrigerator in accordance with an embodiment of the present disclosure. 
     
    
    
     DETAILED DESCRIPTION 
       FIG. 1  is a sectional view illustrating an example of a refrigerator according to an embodiment of the present disclosure. The refrigerator may have a storage chamber W in which goods and the like may be stored. The refrigerator may include a cabinet  1  in which the storage chamber W is formed. The refrigerator may further include a door  50  that opens and closes the storage chamber W. The door  50  may include at least one of a rotatable door  5  and an advancing and retracting type (or drawer type) door  6 . The cabinet  1  may include an outer case  7  forming an outer appearance and an inner case  8  forming at least one surface for forming the storage chamber W therein. 
     The storage chamber W may be a storage chamber in which certain kinds of goods which are preferably stored at a specific temperature range are stored. For example, the storage chamber W may be a dedicated storage chamber for storing certain goods that need to be kept warm or cold, for example, alcoholic liquors such as wine and beer, fermented foods, cosmetics, and medical supplies, for example. As one example, the storage chamber for wine can be maintained at a temperature of 3° C. to 20° C., or a higher temperature than the refrigerating chamber of a normal refrigerator, and may not exceed 20° C. The temperature of the storage chamber for red wine may be adjusted to 12° C. to 18° C., the temperature of the storage chamber for white wine may be adjusted to 6° C. to 11° C. Meanwhile, the temperature of the storage chamber for champagne may be adjusted to about 5° C. 
     The temperature of the storage chamber W may be adjusted such that the storage chamber temperature fluctuates between a target temperature upper limit value and a target temperature lower limit value of the storage chamber W. The quality of the goods stored in the storage chamber W may be reduced by the difference between the target temperature upper limit value and the target temperature lower limit value (hereinafter, referred to as storage chamber temperature difference). The refrigerator may be manufactured with a small storage chamber temperature difference according to the type of the goods and may minimize the reduction of the quality of the goods. The storage chamber W of the refrigerator of the present embodiment may be a storage chamber having a smaller storage chamber temperature difference than that of a general refrigerator. Specifically, the storage chamber temperature difference of the storage chamber W may be less than 3° C., or may be 2° C. as an example. Of course, in a case of considering goods very sensitive to temperature changes, the storage chamber temperature difference may be less than 1° C. 
     The refrigerator may include a device capable of adjusting the temperature of the storage chamber W (hereinafter, referred to as a “temperature adjusting device”). The temperature adjusting device may include at least one of cooling device and heating device. The temperature adjusting device may cool or heat the storage chamber W by at least one of conduction, convection, and radiation. For example, a cooling device such as an evaporator  150  or a heat absorbing body of a thermoelectric element may be attached to the inner case  8  to cool the storage chamber W by conduction. By adding an airflow forming mechanism such as a fan, the air heat-exchanged with the cooling device by convection can be supplied to the storage chamber W. 
     A heating device such as a heater or a heat generating body of the thermoelectric element may be attached to the inner case  8  to heat the storage chamber W by conduction. The addition of an airflow forming mechanism such as a fan may supply heat to the storage chamber W by convection. In the present specification, the cooling device may be defined as a device capable of cooling the storage chamber W, including at least one of the evaporator  150 , the heat absorbing body of the thermoelectric element, and the fan. In addition, the heating device may be defined as a device capable of heating the storage chamber W, including at least one of a heater, a heat generating body of the thermoelectric element, and a fan. 
     The refrigerator may further include an inner guide  200 . The inner guide  200  may partition an inner portion of the inner case  8  into a space in which goods are stored and a space in which a temperature adjusting device is located (hereinafter referred to as a “temperature adjusting device chamber”). The temperature adjusting device chamber may be a cooling device chamber and a heating device chamber. 
     For example, the temperature adjusting device chamber may be located between the inner guide  200  and the inner case  8 , between the inner guide  200  and the outer case  7 , or inside the inner guide  200 . The inner guide  200  may partition a cold air flow path P for supplying cold air to the space where goods are stored and the storage chamber W, and at least one of the cooling device may be provided in the cold air flow path P. 
     The inner guide  200  may partition a space in which goods are stored and a hot air flow path P for supplying heat to the storage chamber W, and at least one of the heating device may be arranged in the hot air flow path P. The inner guide for the cooling device and the inner guide for the heating device may be designed in common and may be manufactured separately. The inner guide  200  may form a storage space together with the inner case  8 . The inner guide  200  may be provided in front of the rear body of the inner case. The refrigerator may include both a refrigerator having one space having the same storage chamber temperature range of the storage chamber W and a refrigerator having two or more spaces having different storage temperature ranges from each other. 
     The refrigerator may further include a partition member  3  arranged vertically or horizontally in order to divide the storage chambers W into two or more spaces (for example, a first space W 1  and a second space W 2 ) which may have different storage chamber temperatures range from each other. The refrigerator may further include the partition member  10  arranged vertically or horizontally in order to divide the storage chambers W into two or more spaces (for example, a second space W 2 , a third space W 3 ) which have different storage chamber temperature ranges from each other. The partition member  10  may be separately manufactured and then mounted in the inner case  8 . The partition member  10  may be manufactured by foaming together with a heat insulating material provided between the outer case  7  and the inner cases  8  and  9 . 
     The two or more spaces may be different in size. For example, the first space W 1  may be located at the upper side, the second space W 2  may be located at the lower side, and the partition member  3  may be arranged so that the size of the first space W 1  is larger than the size of the second space W 2 . The first storage chamber temperature for the first space W may be higher than the second storage chamber temperature for the second space W 2 . 
     According to an embodiment, the first storage chamber temperature may be higher than the second storage chamber temperature, the maximum value of the first storage chamber temperature may be greater than the maximum value of the second storage chamber temperature, the average value of the first storage chamber temperature may be greater than the average value of the second storage chamber temperature, and the minimum value of the first storage chamber temperature may be greater than the minimum value of the second storage chamber temperature. The refrigerator may further include a door (hereinafter, a see-through door) through which the user can see the storage chamber through a see-through window without opening the door  50  from the outside of the refrigerator, and the see-through door will be described later. 
     The refrigerator may further include a transparent gasket  24  provided on at least one of the see-through door and the partition members  3  and  10 . When the see-through door closes the storage chamber W, the transparent gasket  24  may partition the storage chamber W into two or more spaces having different storage temperature ranges from each other together with the partition members  3  and  10 . 
     The refrigerator may further include door opening modules  11  and  11 ′ for forcibly opening the door  50 . The door opening modules  11  and  11 ′ may be a rotatable door opening module  11  which can allow the door  5  to be rotated more than a predetermined angle without the user holding the door  5 , or an advancing and retracting type door opening module  11 ′ which can allow the door  6  to be advanced and retracted in a front and rear direction. The door opening modules  11  and  11 ′ will be described later. The refrigerator may further include a lifting module  13  capable of lifting or lowering the holder  12 , and although not illustrated in  FIG. 1 , the lifting module may be located in at least one of the storage chamber and the door. 
     The refrigerator may include a plurality of doors for opening and closing two or more spaces having different storage temperature ranges from each other. At least one of the plurality of doors may be a see-through door. At least one of the cabinet  1  or the plurality of doors may include door opening modules  11  and  11 ′. A lifting module  13  for lifting and lowering the holder  12  located in the storage chamber to open and close may be provided on at least one of the plurality of doors. For example, the door for the storage chamber located at the top may be a see-through door, and a lifting module  13  for lifting and lowering the holder of the storage chamber located at the lower portion may be disposed. 
       FIG. 2  is a sectional view illustrating another example of a refrigerator according to an embodiment of the present disclosure. Hereinafter, the storage chamber W illustrated in  FIG. 1  will be described as a first storage chamber W. 
     The refrigerator may further include at least one first storage chamber W and at least one second storage chamber C that may be temperature-controlled independently of the first storage chamber W. Hereinafter, a detailed description of the same configuration and operation as those of the storage chamber W illustrated in  FIG. 1  will be omitted for the first storage chamber W, and a different configuration and operation from the storage chamber W illustrated in  FIG. 1  will be described. 
     The second storage chamber C may be a storage chamber having a temperature range lower than the temperature range of the first storage chamber W, and for example, may be a storage chamber having a temperature range of −24° C. to 7° C. and the second storage chamber C may be a storage chamber which is temperature-controlled based on a target temperature, which is a temperature selected by a user within a temperature range of −24° C. to 7° C. 
     The second storage chamber C may be composed of a switching chamber (or a temperature changing chamber) in which any one of a plurality of temperature ranges may be selected, and may be configured as a non-switching chamber having one temperature range. The switching chamber may be a storage chamber which can be temperature-controlled to a selected temperature range among a plurality of temperature ranges, and the plurality of temperature ranges may include a first temperature range above zero, a second temperature range below zero, and a third temperature range between the first temperature range and the second temperature range. 
     For example, the user may supply an input to an input unit to select the second storage chamber C as a mode (for example, a refrigerating chamber mode) that is a temperature range above zero, and the temperature range of the second storage chamber C may be selected within a temperature range above zero (for example, 1° C. to 7° C.). The user may supply an input to an input unit to further input a desired temperature in the temperature range above zero, and the target temperature of the second storage chamber C may be a specific temperature (for example, 4° C.) entered by a user in the temperature range (for example, 1° C. to 7° C.) above zero. 
     The user may supply an input to the input unit and thus select as a mode in which the second storage chamber C is in the temperature range below zero (for example, freezing chamber mode) or a special mode (for example, a mode for storing a certain kind of goods or kimchi storage mode). The first storage chamber W may be a specific goods storage chamber in which a particular kind of goods which is preferably stored at a specific temperature range is stored or mainly a certain kind of goods are stored, and the second storage chamber C may be a non-specific goods storage chamber in which a various kinds of goods may be stored in addition to a specific kind of goods. 
     Examples of specific goods may include alcoholic beverages including wine, fermented foods, cosmetics, and medical supplies. For example, the first storage chamber W may be a storage chamber in which wine is stored or a wine chamber in which wine is mainly stored, and the second storage chamber C may be a non-wine chamber in which goods other than wine are stored or goods other than wine are mainly stored. 
     A storage chamber having a relatively small storage chamber temperature difference among the first storage chamber W and the second storage chamber C may be defined as a constant temperature chamber, and a storage chamber having a relatively large storage chamber temperature difference among the first storage chamber W and the second storage chamber C may be defined as a non-constant temperature chamber. Any one of the first storage chamber W and the second storage chamber C may be a priority storage chamber which is controlled in priority, and the other may be a subordinate storage chamber which is controlled secondarily to the priority chamber. 
     The first goods having a large or expensive quality change according to the temperature change may be stored in the priority storage chamber, and the second goods having a small or low quality change according to the temperature change may be stored in the subordinate storage chamber. The refrigerator may perform a specific operation for the priority storage chamber and a specific operation for the subordinate storage chamber. 
     The specific operation may include a general operation and a special operation for the storage chamber. A general operation may be defined as a conventional cooling operation for the storage chamber cooling. The special operation may be defined, for example, as a defrost operation for defrosting cooling device, a door load response operation that can be performed when predetermined conditions are satisfied after the door is opened (e.g., to cool a storage chamber when an object is positioned in the storage chamber), and an initial power supply operation, which is an operation when the power is first supplied to the refrigerator. 
     The refrigerator may be controlled such that a specific operation for the priority storage chamber is performed first when two operations may be performed simultaneously. Here, the simultaneous operation may be defined in a case where the start condition of the first operation and the start condition of the second operation are satisfied at the same time, as a case where the start condition of the first operation is satisfied and thus the start condition of the second operation is satisfied while the first operation is in progress, and as a case where the start condition of the second operation is satisfied and thus the start condition of the first operation is satisfied while the second operation is in progress. 
     For example, in the refrigerator, the priority storage chamber may be cooled or heated prior to the subordinate storage chamber when the temperature of the priority storage chamber is not satisfied and the temperature of the subordinate storage chamber is not satisfied. While the cooling device for cooling the subordinate storage chamber is defrosted, if the temperature of the priority storage chamber is not satisfied, the priority storage chamber may be cooled or heated while the cooling device of the subordinate storage chamber is defrosted. 
     If the temperature of the priority storage chamber is not satisfied while the subordinate storage chamber is in progress of the door load response operation, the priority storage chamber may be cooled or heated during the door load response operation of the subordinate storage chamber. Any one of the first storage chamber W and the second storage chamber C may be a storage chamber in which the temperature is adjusted by the first cooling device and the heating device, and the other may be a storage chamber in which the temperature is adjusted by the second cooling device. 
     In the refrigerator, a separate receiving member  4  may be additionally disposed in at least one of the first space W 1  and the second space W 2 . In the receiving member  4 , a separate space S (hereinafter, referred to as a receiving space) may be formed separately from the first space W 1  and the second space W 2  to accommodate goods. The refrigerator may adjust the receiving space S of the receiving member  4  to a temperature range different from that of the first space W 1  and the second space W 2 . 
     The receiving member  4  may be located in the second space W 2  located below the first space W 1 . The receiving space S of the receiving member  4  may be smaller than the second space W 2 . The storage chamber temperature of the receiving space S may be equal to or less than the storage chamber temperature of the second space W 2 . 
     In the refrigerator, in order to dispose as many shelves  2  as possible in the first storage chamber W, the length of the refrigerator itself in the vertical direction may be longer than the width in the horizontal direction, and in this case, the length of the refrigerator in the vertical direction may be more than twice the width in the horizontal direction. Since the refrigerator may be rolled over if the length in the vertical direction is too long relative to the width in the horizontal direction, the length in the vertical direction may be less than three times the width in the horizontal direction. 
     Preferred examples of the length in the vertical direction that can store a plurality of the specific goods may be 2.3 to 3 times the width in a left and right direction, and the most preferred example may be 2.4 to 3 times the width in the left and right direction. Even if the length of the refrigerator in the vertical direction is longer than the width in the left and right direction, in a case where the length of the storage chamber in which the specific goods are substantially stored, for example, the first storage chamber W, in the vertical direction is short, the number of specific goods may not be high. In the refrigerator, the length of the first storage chamber W in the vertical direction may be longer than the length of the second storage chamber C in the vertical direction so that a space for the specific goods may be as large as possible. For example, the length of the first storage chamber W in the vertical direction may be 1.1 times to 1.5 times the length of the second storage chamber C in the vertical direction. 
     At least one of the first door  5  and the second door  6  may be a see-through door, and the see-through door will be described later. The refrigerator may further include door opening modules  11  and  11 ′ for forcibly opening at least one of the first door  5  and the second door  6  to the door opening modules  11  and  11 ′, and the door opening modules  11  and  11 ′ will be described later. In at least one of the first storage chamber W, the second storage chamber C, and the first door  5  and the second door  6 , a lifting module  13  capable of lifting the holder  12  may be provided, and the lifting module  13  will be described later. 
     Referring to  FIG. 3 , the refrigerator of the present embodiment may be provided adjacent to other refrigerators. A pair of adjacent refrigerators may be provided in the left and right direction, hereinafter, for convenience of description, the first refrigerator Q 1  and the second refrigerator Q 2  will be referred for description thereof, and the same configuration of the first refrigerator Q 1  and the second refrigerator Q 2  as each other will be described using the same reference numerals for convenience of description. In the refrigerator of the present embodiment, a plurality of storage chambers may be located in the left and right direction and the vertical direction in one outer case, such as a side by side type refrigerator or a French door type refrigerator. 
     At least one of the first refrigerator Q 1  and the second refrigerator Q 2  may be a refrigerator to which an embodiment of the present disclosure is applied. Although the first refrigerator Q 1  and the second refrigerator Q 2  have some functions different from each other, the lengths of the first and second refrigerators Q 1  and Q 2  in the vertical direction may be the same or almost similar so that the overall appearance may give the same or similar feeling when arranged adjacent to each other in the left and right direction. 
     Each of the first refrigerator Q 1  and the second refrigerator Q 2  may include each of a first storage chamber and a second storage chamber, and the first storage chamber and the second storage chamber may include a partition member  10  partitioning in the vertical direction, respectively. The partition member  10  of the first refrigerator Q 1  and the partition member  10  of the second refrigerator Q 2  may overlap in the horizontal direction. 
     The lower end  6 A of the second door  6  opening and closing the second storage chamber of the first refrigerator Q 1  and the lower end  6 A of the second door  6  opening and closing the second storage chamber of the second refrigerator Q 2  may coincide with each other in the horizontal direction. The lower end  6 B of the second door  6  opening and closing the second storage chamber of the first refrigerator Q 1  and the lower end  6 B of the second door  6  opening and closing the second storage chamber of the second refrigerator Q 2  may coincide with each other in the horizontal direction. 
     Referring to  FIG. 4 , the refrigerator may include cooling device and heating device that may be independently controlled to control the temperature of the storage chamber W. The refrigerator may include cooling device and heating device for controlling the temperature of at least one storage chamber among a specific goods storage chamber, a constant temperature chamber, and a priority storage chamber. 
     The refrigerator may perform a cooling operation E in which the storage chamber W is cooled by the cooling device or a heating operation H in which the storage chamber W is heated by the heating device, for temperature control of the storage chamber W. The refrigerator may implement a standby mode D that maintains the storage chamber W in a current state without cooling or heating. 
     The refrigerator may include a temperature sensor that senses a temperature of the storage chamber W and may perform the cooling operation E, the heating operation H, and the standby mode D according to the storage chamber temperature sensed by the temperature sensor. 
     The cooling operation E is not limited to that the storage chamber W is continuously cooled by the cooling device and may include a case where the storage chamber is cooled by the cooling device as a whole, but the storage chamber W is temporarily not cooled by the cooling device and a case where the storage chamber W is cooled by the cooling device as a whole, but the storage chamber is temporarily heated by the heating device. The cooling operation E may include a case where the time when the storage chamber is cooled by the cooling device is longer than the time when the storage chamber W is not cooled by the cooling device. 
     The heating operation H is not limited to the storage chamber W being continuously heated by the heating device and include a case where the storage chamber W is heated by the heating device as a whole, but the storage chamber W is temporarily not heated by the heating device and a case where the storage chamber W is heated by the heating device as a whole, the storage chamber W is temporarily cooled by the cooling device. The heating operation H may include a case where the time when the storage chamber W is heated by the heating device is longer than the time when the storage chamber W is not heated by the heating device. 
     There is a case where the temperature of the storage chamber W, which has been temperature-controlled by the cooling operation E, may be kept below a target temperature lower limit value without lifting above the target temperature lower limit value for a long time in a state of being lowered below the target temperature lower limit value. 
     In this case, the refrigerator may start the heating operation H so that the storage chamber W is not overcooled when the storage chamber temperature falls below the lower limit temperature, and the heating device may be turned on. The lower limit temperature may be a temperature set to be lower than the target temperature lower limit value by the predetermined temperature. 
     The refrigerator may start the heating operation H so that the storage chamber temperature is not maintained in a low state for a long time when the storage chamber temperature is maintained between the target temperature lower limit value and the lower limit temperature during the setting time. The heating operation H may be started when the storage chamber temperature is less than the lower limit temperature, and the lower limit temperature may be the heating operation start temperature. 
     One example of the standby mode D may be a mode in which the storage chamber temperature is maintained between the target lower limit value and the lower limit temperature, the refrigerator is not immediately switched to the heating operation H during the cooling operation E, and the cooling operation E, the standby mode D, and the heating operation H in that order may be controlled. 
     The temperature of the storage chamber W, which has been temperature-controlled by the heating operation H, may be kept above the target temperature upper limit value without being lowered below the target temperature upper limit value for a long time in a state of lifting above the target temperature upper limit value. In this case, when the storage chamber temperature exceeds the upper limit temperature, the refrigerator may start the cooling operation E so that the storage chamber W is not overheated, and the cooling device may be turned on. The upper limit temperature may be a temperature set to be higher than a target temperature upper limit value. 
     The refrigerator may start the cooling operation E so that the storage chamber temperature does not remain high for a long time when the storage chamber temperature is maintained between the target temperature upper limit value and the upper limit temperature during the setting time. The cooling operation E may be started when the storage chamber temperature exceeds the upper limit temperature, and the upper limit temperature may be a cooling operation start temperature. 
     Another example of the standby mode D may be a mode in which the storage chamber temperature is maintained between the target temperature upper limit value and the upper limit temperature, and the refrigerator may not immediately switch to the cooling operation E during the heating operation H, but the heating operation H, the standby mode D, and the cooling operation E in that order may be controlled. For example, the cooling operation E may be a mode in which the refrigerant passes through the evaporator, the air in the storage chamber W is cooled by the evaporator, and then flows into the storage chamber W. 
     In the cooling operation E, the compressor may be turned on or off according to the temperature of the storage chamber W. In the cooling operation E, the compressor may be turned on or off such that the storage chamber temperature is maintained between the target temperature upper limit value and the target temperature lower limit value. The compressor may be turned on because the cooling is not satisfied when the storage chamber temperature reaches the target temperature upper limit value and may be turned off when cooling is satisfied when the storage chamber temperature reaches the target temperature lower limit value. 
     The cooling operation E may include a cooling mode in which the refrigerant passes through the evaporator and the fan supplies heat exchanged air with the evaporator to the storage space, and a non-cooling mode in which the refrigerant does not pass through the evaporator, and when the storage chamber temperature lifts and lowers repeatedly between the upper limit temperature and the lower limit temperature in the cooling operation E, the cooling mode and the non-cooling mode may be alternately performed. 
     For example, in the heating operation H, the heater may be turned on or off so that the storage chamber temperature is maintained between the target temperature upper limit value and the target temperature lower limit value. Specifically, the heater may be turned off because heating is satisfied when the storage chamber temperature reaches the target temperature upper limit value and may be turned on because heating is not satisfied when the storage chamber temperature reaches the target temperature lower limit value. 
     The heating operation H may include a heating mode in which the refrigerant does not pass through the evaporator and the heater is turned on, and a non-heating mode in which the refrigerant does not pass through the evaporator and the heater is turned off, and in the heating operation H, when the storage chamber temperature repeats the lifting and lowering between the upper limit temperature and the lower limit temperature, the heating mode and the non-heating mode may be performed alternately. 
     For example, the standby mode D may be a mode in which the refrigerant does not pass through the evaporator and the heater maintains the off state. The standby mode D may be a mode in which air in the storage chamber W is not circulated by the storage chamber fan. The standby mode D may be a mode in which the heater also maintains the off state while the compressor maintains the off state. 
     The refrigerator may perform a humidification mode to increase the humidity of the storage chamber. The humidification mode may be a mode in which air in the storage chamber W may be humidified by flowing into the cooling device chamber by a fan, and the humidified air may flow into the storage chamber W to humidify the storage chamber, in a state where at least a portion of the cooling device is in an off state (for example, the supply of refrigerant to the evaporator is interrupted, the thermoelectric element is turned off), and at least some of the heating device is maintained in an off state (for example, the heater is turned off and the thermoelectric element is turned off). 
     For example, the humidification mode may be a mode in which the air in the storage chamber flows to the evaporator by a fan to be humidified, and the humidified air flows into the storage chamber to humidify the storage chamber, in a state where the heater is maintained in an off state while the refrigerant does not pass through the evaporator. In the humidification mode, a fan that circulates air in the storage chamber to the evaporator and the storage chamber may be driven. 
     The refrigeration cycles illustrated in  FIGS. 5 to 8  may be applied to a refrigerator having three spaces (hereinafter, referred to as 1, 2, and 3 spaces) having different storage temperature ranges from each other. For example, The refrigeration cycles may be applied to at least one of i) a refrigerator having a first space W 1 , a second space W 2 , and a third space W 3 , ii) a refrigerator having a first storage chamber W having the first space W 1  and the second space W 2 , and a second storage chamber C partitioned from the first storage chamber W, and iii) a refrigerator having a first storage chamber W and two second and third storage chambers partitioned from the first storage chamber W. 
     The refrigeration cycle illustrated in  FIGS. 5 to 7  may include a compressor  100 , a condenser  110 , a plurality of expansion mechanisms or devices  130 ′,  130 ,  140 , and a plurality of evaporators  150 ′,  150 ,  160  and may further include a flow path switching mechanism (or four way valve)  120 ′. A case where the first region is the first space W 1 , the second region is the second space W 2 , and the third region is the second storage chamber C will be described below. The first, second, and third regions are also applicable to cases ii) and iii) described above. 
     The plurality of evaporators  150 ′,  150 ,  160  may include a pair of first evaporators  150 ′,  150  capable of independently cooling the first space W 1  and the second space W 2 , respectively, and a second evaporator  160  that can cool a second storage chamber C. One of the pair of first evaporators  150 ′ and  150  may be an evaporator  150 ′ cooling the first space W 1 , and the other of the pair of first evaporators  150 ′ and  150  may be an evaporator  150  cooling the second space W 2 . 
     The plurality of expansion mechanisms  130 ′,  130 , and  140  may include a pair of first expansion mechanisms  130 ′ and  130  connected to a pair of first evaporators  150 ′ and  150 , and a second expansion mechanism  140  connected to a second evaporator  160 . Any one of the pair of first expansion mechanisms  130 ′ and  130  may be an expansion mechanism  130 ′ connected to any one  150 ′ of the pair of first evaporators  150 ′ and  150 , and the other of the pair of first expansion mechanisms  130 ′ and  130  may be an expansion mechanism  130  connected to the other one  150  of the pair of first evaporators  150 ′ and  150 . 
     The flow path switching mechanism  120 ′ may include a first valve  121  capable of controlling a refrigerant flowing into the pair of first expansion mechanisms  130 ′ and  130 , and a second valve  122  capable of controlling a refrigerant flowing into the first valve  121  and the second expansion mechanism  140 . The refrigerator having the refrigeration cycle illustrated in  FIGS. 5 to 7  may include a pair of first fans  181 ′ and  181 , and a second fan  182  for circulating cold air in the space of the second storage chamber C to the space of the second evaporator  160  and the second storage chamber C and may further include a condensation fan  114  for blowing outside air to the condenser  110 . 
     Any one of the pair of first fans  181 ′ and  181  may be a fan in the first space in which cold air in the first space W 1  can be circulated into any one  150 ′ of the pair of first evaporators  150 ′ and  150  and the first space W 1 . The other one of the pair of fans  181 ′ and  181  may be a fan in the second space in which cold air in the second space W 2  can be circulated into any one  150  of the pair of first evaporators  150 ′ and  150  and the second space W 2 . 
     The refrigeration cycle illustrated in  FIG. 5  may include a first parallel flow path in which a pair of first evaporators  150 ′ and  150  are connected in parallel and a second parallel flow path in which a pair of first evaporators  150 ′ and  150  are connected to the second evaporator  160  in parallel. In this case, a one-way valve  168  may be installed at an outlet side of the second evaporator  160  to prevent the refrigerant at the outlet side of the first evaporators  150  and  150 ′ from flowing back to the second evaporator  160 . 
     The refrigeration cycle illustrated in  FIG. 6  may include a parallel flow path in which a pair of first evaporators  150 ′ and  150  are connected in parallel and a serial flow path  123  in which the pair of first evaporators  150 ′ and  150  are connected to a second evaporator  160  in series. One end of the serial flow path  123  may be connected to a parallel flow path in which a pair of first evaporators  150 ′ and  150  are connected in parallel. The other end of the serial flow path  123  may be connected between the second expansion mechanism  140  and the inlet of the second evaporator  160 . In this case, a one-way valve  168  may be installed at the outlet side of the second evaporator  150  to prevent the refrigerant at the outlet side of the second evaporator  150  from flowing back to the second evaporator  150 . 
     The refrigeration cycle illustrated in  FIG. 7  may include a serial flow path  125  in which a pair of first evaporators  150 ′ and  150  are connected in series, and, a parallel flow path in which the pair of first evaporators  150 ′ and  150  are connected to the second evaporator  160  in parallel. One end of the serial flow path  125  may be connected to the outlet side of any one  150  of the pair of first evaporators  150 ′ and  150 . The other end of the serial flow path  125  may be connected to an inlet side of the other  150 ′ of the pair of first evaporators  150 ′ and  150 ′. In this case, a one-way valve  168  may be installed at the outlet side of the second evaporator  160  to prevent the refrigerant at the outlet side of the second evaporator  160  from flowing back to the second evaporator  160 . 
     The refrigeration cycle illustrated in  FIG. 8  may include one first evaporator  150  instead of the pair of first evaporators  150 ′ and  150  illustrated in  FIGS. 5 to 7 , and one first expansion mechanism  130  instead of the pair of expansion mechanism  130 ′ and  130 . In addition, the refrigeration cycle illustrated in  FIG. 8  may include a flow path switching mechanism  120  for controlling the refrigerant flowing into the first expansion mechanism  130  and the second expansion mechanism  140 , and the flow path switching mechanism  120  may include a refrigerant valve that can be switched so that the refrigerant flowing from the condenser  110  flows to the first expansion mechanism  130  or the second expansion mechanism  140 . In addition, a one-way valve  168  may be installed at the outlet side of the second evaporator  160  to prevent the refrigerant at the outlet side of the second evaporator  160  from flowing back to the second evaporator  160 . 
     Since other configurations and actions other than one first evaporator  150 , one first expansion mechanism  130 , a flow path switching mechanism  120 , and a one-way valve  168  of the refrigeration cycle illustrated in  FIG. 8  are the same as or similar to those of the refrigeration cycle illustrated in  FIGS. 5 to 7 , a detailed description with respect to those will be omitted. 
     The refrigerator having a refrigeration cycle illustrated in  FIG. 8  may include a first fan  181  circulating cold air of the first storage chamber W into the first evaporator  150  and the first storage chamber W instead of the pair of first fans  181 ′ and  181  illustrated in  FIGS. 5 to 7 . In addition, the refrigerator having the refrigeration cycle illustrated in  FIG. 8  may include a first damper  191  for controlling cold air flowing into the first space W 1  after being cooled by the first evaporator  150  and a second damper  192  for controlling the cold air flowing into the second space W 2  after being cooled by the first evaporator  150 . Only one of the first damper  191  and the second damper  192  may be provided. In the refrigerator, one damper may selectively supply air cooled by the evaporator  150  to at least one of the first space W 1  and the second space W 2 . 
     Modification examples of the refrigeration cycle illustrated in  FIGS. 5 to 8  may be applied to a refrigerator having two spaces having different storage temperature ranges from each other. In other words, the modification examples of the refrigeration cycle may be applied to a refrigerator having a first space W 1  and a second space W 2  or a refrigerator having a first storage chamber W and a second storage chamber C. The refrigeration cycle may be configured with a cycle which does not include the flow path switching mechanisms  120  and  122 , the second expansion mechanism  140 , the second evaporator  160 , the second fan  182 , and the one-way valve  168 . 
     Referring to  FIG. 9 , the refrigerator may include a controller  30  that controls various electronic devices such as a motor provided in the refrigerator. The controller  30  may control the refrigerator according to the input value of the input device. The input device may include at least one of a communication device  31  which receives a signal from an external device such as a remote controller such as a remote controller or a mobile terminal such as a mobile phone, a microphone  32  that changes a user&#39;s voice to a sound signal, a sensing unit  33  which can sense a user&#39;s motion, a proximity sensor  34  (or a distance sensor) which can sense the user&#39;s proximity, a touch sensor  35  which can sense the user&#39;s touch, a door switch  36  which can detect the opening and closing of the door, and a timer  37  which can measure the lapse of time. 
     The see-through door may be a door which may alternate between a see through (see-through activation state) and an opaque (see-through deactivation state) state. The see-through door may be a door that is changed from an opaque state to a see-through state according to an input value provided to the controller  30  through the input device. The see-through door may be a door that is changed from a see-through state to an opaque state according to an input value provided to the controller  30  through the input device. The see-through door may be a door in which the see-through door is changed from an opaque state to see-through state, in a state where the see-through door is closed, according to an input value provided to the controller  30  through the input device. 
     The sensing unit (or sensor)  33  may be a vibration sensor provided on the rear surface of the front panel, the vibration sensor may be formed in black, and visible exposure may be minimized. The sensing unit  33  may be a microphone provided on the rear surface of the front panel, and the microphone may sense sound waves of vibration applied to the front panel. When a user taps the panel assembly  23  a plurality of times at a predetermined time interval is detected through the sensing unit  33 , the user may change the see-through door to be activated or deactivated. 
     The sensing unit  33  may be a device for imaging a user&#39;s motion, or a camera. It may be determined whether the image photographed by the sensing unit  33  is similar or identical to a specific motion input in advance, and may be changed to activate or deactivate the see-through door according to the determination result. 
     If the sensor senses that the user is close to a predetermined distance or more according to the value detected by the proximity sensor  34 , the see-through door may be changed to be activated or deactivated. When the sensor senses that the door is closed according to the value detected by the door switch  36 , the see-through door may be activated, and when the sensor senses that the door is open, the see-through door may be changed to be inactivated. 
     The see-through door may be controlled to be deactivated after a certain time elapses after being activated according to the value input through the timer  37 . According to the value input through the timer  37 , the see-through door may be controlled to be activated when a predetermined time elapses after being deactivated. 
     If the device for activating or deactivating the see-through door is defined as a transparency control module, for example, the panel assembly  23  and a light source  38  may be used. As an example in which the see-through door is activated or deactivated, there may be a case where the transparency of the see-through door itself may vary. For example, the see-through door may maintain in an opaque state when no current is applied to the panel assembly  23  and may be changed to be transparent when current is applied to the panel assembly  23 . In another example, when the light source  38  installed inside the see-through door is turned on, the user may see the storage chamber through the see-through door by the light emitted from the light source  38 . 
     The light source  38  may make the panel assembly  23  appear transparent or translucent so that an inside of the refrigerator (a side of the storage chamber relative to the panel assembly) looks brighter than outside of the refrigerator (outside relative to the panel assembly). The light source  38  may be mounted on the light source mounting portion formed on the cabinet  1  or the light source mounting portion formed on the door and may be disposed to emit light toward the panel assembly  23 . 
     The controller  30  may control the door opening module  11  according to the input value of the input device. The controller  30  may control the lifting module  13  according to the input value of the input device. 
     Referring to  FIG. 10 , the refrigerator may include a door (hereinafter, a see-through door) through which a user may view the storage chamber through a see-through window without opening the door  50  from the outside of the refrigerator. The see-through door may include an outer door  22  and a panel assembly  23 . 
     The outer door  22  may be opaque and an opening portion  21  may be formed. The outer door  22  may form an outer appearance of the see-through door. The outer door  22  may be rotatably connected to or connected to the cabinet  1  to be capable of being advanced and retracted. 
     The panel assembly  23  may be arranged in the opening portion  21 . The panel assembly  23  may shield the opening portion  21 . The panel assembly  23  may form the same outer appearance as the front surface of the outer door  22 . 
     The see-through door may open and close the storage chamber which mainly stores goods (for example, wine) having a large quality change according to the temperature change. In a case where goods having a large quality change due to temperature change are mainly stored in the storage chamber W, the storage chamber W may be opened and closed as short as possible, the number of opening and closing actions is preferably minimized, and the see-through door may open and close the storage chamber W. For example, the see-through door may be provided in the door for opening and closing at least one of the specific goods storage chamber, the constant temperature chamber, and the priority storage chamber. 
     Referring to  FIG. 11 , in the refrigerator, a door opening and closing the storage chamber may be an automatic door, and the door for opening and closing the specific goods storage chamber, the constant temperature chamber, and a priority storage chamber may be an automatic door. The refrigerator may include a door opening module  11  for forcibly opening the door  5 . 
     The automatic door may be controlled to be opened or closed according to an input value provided to the controller  30  through the input device. For this purpose, the controller  30  may control the door opening module  11 . 
     The cabinet  1  may be installed with a hinge mechanism  40  in which the hinge shaft  42  is connected to the door  5 . The refrigerator may further include a module cover  70  that may cover the hinge mechanism  40  and the door opening module  11  together. In addition, the door opening module  11  may include a drive motor  72 , a power transmission unit  74 , and a push member or lever  76 . 
     When the power of the refrigerator is turned on, the controller  30  may wait to receive an open command of the door  5 . When the door opening command is input through the input device, the controller  30  may transmit an opening signal to the drive motor  72  included in the door opening module  11 . 
     When the controller  30  transmits an opening signal to the drive motor  72 , the drive motor  72  may be rotated in a first direction to move the push member  76  from an initial position to a door opening position. When the drive motor  72  rotates in the first direction, the power transmission unit  74  may transmit a first direction rotational force of the drive motor  72  to the push member  76 , the push member  76  may push the door while protruding forward, and the door  5  may be rotated in the forward direction with respect to the cabinet  1 . 
     The controller  30  may determine whether the push member  76  has reached the door opening position in a process of rotating in the first direction of the drive motor  72 . For example, the controller may determine that the push member  76  has reached the door opening position when the cumulative rotational speed of the drive motor  72  reaches a reference rotational speed. The controller  30  may stop the rotation of the drive motor  72  when it is determined that the push member  76  has moved to the door opening position. 
     In a state where the door  5  is rotated through a predetermined angle, the user may manually increase the opening angle of the door  5 . When the user increases the opening angle of the door in a state where the push member  76  moves the door  5  to the door opening position, the door sensor including a magnet  46  and a reed switch  48  may sense the manual opening of the door  5 , and if the manual opening of the door  5  is sensed by the door sensor, the controller  30  may output a return signal to the drive motor  72 . 
     The controller  30  may transmit the return signal to the drive motor  72  so that the push member  76  returns to the initial position and the drive motor  72  may be reversely rotated in a second direction opposite to the first direction. When the push member  76  has returned to the initial position, the controller  30  may stop the drive motor  72 . 
     The door opening module  11 ′ illustrated in  FIG. 12  may automatically open the door  6  disposed in the cabinet  1  to be capable of being advanced and retracted. The refrigerator may include a door having a high height and a door having low height, and the door opening module  11 ′ may be installed to automatically open a door having a lower height than other doors. Such a door may be a retractable automatic door which is automatically opened by the door opening module  11 ′. 
     The door  6  advanced and retracted by the door opening module  11 ′ may include a drawer body  6 A and a door body  6 B disposed at the drawer body  6 A to open and close the storage chamber. The door opening module  11 ′ may include a drive motor  80 , a pinion  82 , and a rack  84 . The pinion  82  may be connected to the rotation shaft of the drive motor  80 . The rack  84  may extend from the door  6 , in particular, the drawer body  6 A. 
     The refrigerator may further include a door sensor that senses a position of the door  6 , and the door sensor may sense a pair of magnets  46 ′ spaced apart from the door  6  and a reed switch  48 ′ sensing the magnet  46 ′. When the power of the refrigerator is turned on, the controller  30  may wait to receive an opening command of the door  6 . When the door opening command is input through the input device, the controller  30  may transmit an opening signal to the drive motor  80 . 
     The drive motor  80  may be rotated in the first direction by the controller  30  when an opening signal is input, and the pinion  82  and the rack  84  may transmit the rotational force of the drive motor  80  to the drawer body  82 , the drawer body  6 A may advance the door body  6 B while advancing forward in the storage chamber, and the door body  6 B may be advanced to be spaced apart from the cabinet  1  toward the front of the cabinet  1 . The controller  30  may sense that the door  6  has reached the opening position by the door sensor, and when the door  6  has reached the opening position, the controller  30  may stop the rotation of the drive motor  80 . 
     When the drawer body  6 A is advanced as described above, the upper surface of the drawer body  6 A may be exposed. In a state where the drawer body  6 A is advanced to the opening position, the user may enter a door closing command such that the drawer body  6 A retracts to the closing position via the input device. For example, if the motion sensed by the sensing unit  33  coincides with a specific motion, the controller  30  may transmit a close signal to the drive motor  80 . The controller  30  may sense the proximity of the user by the proximity sensor  34 , and transmit a closing signal to the drive motor  80  when the proximity sensor  34  detects that the user has moved more than a predetermined distance. 
     When the close signal is input, the drive motor  80  may be reversely rotated in a second direction opposite to the first direction. In reverse rotation of the drive motor  80 , the pinion  82  and the rack  84  may transmit the rotational force of the drive motor  80  to the drawer body  6 A, and while the drawer body  6 A retracts into the storage chamber, the door body  6 B may be retracted and the door body  6 B may be retracted in close contact with the cabinet  1  toward the front of the cabinet  1 . The controller  30  may sense that the door  6  has reached the closing position by the door sensor, and if the door  6  has reached the closing position, the controller  30  may stop the rotation of the drive motor  80 . 
     Referring to  FIG. 13 , the refrigerator may further include a lifting module  13  which allows the holder  12  to be automatically lifted and lowered after the holder  12  is moved forward in a state where the door  50  is opened. The holder  12  may be a shelf, a drawer, a basket, or the like on which goods can be placed. The lifting module  13  may be provided in the storage chamber or at least one of the rotatable door  5  and the advancing and retracting type door  6  for opening and closing the storage chamber. The refrigerator may have both a holder having a high height and a holder having a low height. 
     The lifting module may be provided in a storage chamber in which a holder having a lower height than other holders is located. The lifting module for lowering may be arranged in a storage chamber in which a holder having a relatively higher height than other holders is located. 
     The lifting module  13  may include a lower frame  93 , an upper frame  94 , an lifting and lowering mechanism  92  having at least one link  95 , and a drive mechanism  90  capable of lifting and lowering the upper frame  94 . The drive mechanism  90  may include a lifting and lowering motor  91  and a power transmission member connected to the lifting and lowering motor  91  to transfer the drive force of the lifting and lowering motor  91  to the upper frame  94 . 
     When the power of the refrigerator is turned on, the controller  30  may wait for a lifting command of the holder  12  to be input. When the lifting command is input through the input device, the controller  30  may transmit a lifting signal to the lifting and lowering motor  91  included in the lifting module  13 . When the controller  30  transmits an opening signal to the lifting and lowering motor  91 , the upper frame  94  may lift, and the holder  12  may be lifted to the upper side of the drawer body  6 B. 
     The user may input a lowering command through the input device, and the controller  30  may transmit a lowering signal to the lifting and lowering motor  91  when the lowering command is input through the input device. The lifting and lowering motor  91  may be reversely rotated in a second direction opposite to the first direction. Upon reverse rotation of the lifting and lowering motor  91 , the upper frame  94  may be lowered to the inner lower portion of the drawer body  82 , and the holder  12  may be inserted into the drawer body  6 B together with the upper frame  94 . 
     The inner guide  200  may be provided in the cabinet  1  in which the first storage chamber W is formed, and may be arranged in the inner case  8  to partition the storage space and the air flow path P. The air flow path P may be formed between the inner guide  200  and the inner case  8  of the inner space of the inner case  8  or may be formed in the inner guide  200 . 
     The refrigerator may include first cooling device and heating device for controlling the temperature of the first storage chamber W. The first cooling device may be provided in the air flow path P and may be a heat absorbing body of the thermoelectric element or the first evaporator  150  through which the refrigerant passes. Hereinafter, the first cooling device will be described with  150  which is the same reference numeral as the first evaporator which can be one example. 
     The heating device may be provided in the storage space or in the inner case  8 . The heating device may be a heat generating body of the thermoelectric element or a heater or the like, and hereinafter, the heating device will be described as a heating device. 
     The refrigerator may include a fan  181  for circulating air in the storage space to the air flow path P and the storage space. The fan  181  may be provided in the inner guide  200 . The inner guide  200  may form a storage space together with the inner case  8 . The inner guide  200  may cover the first cooling device  150  and the fan  181 . 
     When the inner guide  200  is arranged in front of the rear body of the inner case  8 , the storage space may be a space in front of the inner guide  200  among the inside of the inner case  8 , and the air flow path P may be formed between the inner guide  200  and the rear body of the inner case  8  or may be formed inside the inner guide  200 . 
     When the refrigerator further includes the partition member  3 , the partition member  3  may partition the first space W 1  and the second space W 2 . The inner guide  200  may have a discharge port  204  and a suction port  205  spaced apart from each other, and the discharge port  204  and the suction port  205  may face the first space W 1 . 
     The inner guide  200  may include a heat exchange flow path P 1  in which the first cooling device  150  and the fan  181  are received. The inner guide  200  may have a discharge flow path P 2  through which air blown by the fan  181  is guided to the discharge port  204 . The inner guide  200  may include an additional discharge flow path P 3  for guiding the air blown by the fan  181  to be discharged to the additional discharge port  321 . 
     The heat exchange flow path P 1 , the discharge flow path P 2 , and the additional discharge flow path P 3  may constitute an air flow path P for guiding air to circulate between the first cooling device  150  and the storage space, and the first cooling device  150  and the fan  181  may adjust the temperature of the first space W 1  and the second space W 2  in a state received in the air flow path P. 
     The air guide  400  may include a front housing  410  and a rear housing  420  in which the fan  181  is received. The air guide  400  may have an outlet  412  that communicates with the additional discharge port  321 . The outlet  412  may face the additional discharge port  321  to discharge air to the additional discharge port  321  or may be in communication with the additional discharge port  321  through a discharge duct. 
     The refrigerator may include a guide  234  that guides air forced by the fan  181  inside the air guide  400  to the outlet  412 . The guide  234  may be formed in the discharge guide  202  to guide the air blown from the fan  181  to the outlet  412 . 
     The air guide  400  may include a scroll  413  and an opening portion  414  through which air may be guided to the discharge flow path P 2 . The scroll  413  may guide the air blown from the fan  181  to the opening portion  414 . The opening portion  414  may communicate with the lower end of the discharge flow path P 2 . 
     The first damper  191  may be provided in the air flow path P and may adjust the air supplied to the first space W 1 . The second damper  192  may be provided in the air flow path P and may adjust the air supplied to the second space W 2 . The inner guide  200  may include a first temperature sensor  190  for sensing a temperature of the first space W 1  and a second temperature sensor  390  for sensing a temperature of the second space W 2 . The inner guide  200  may include a discharge guide  202  and an inner cover  300 . 
     The discharge guide  202  may be arranged higher than the inner cover  300 . The discharge guide  202  may include a discharge body  210  in which the discharge port  204  and the suction port  205  are formed, and a flow path body  230  provided in the discharge body  210  and forming the discharge flow path P 2 . 
     The first cooling device  150  and the fan  181  may supply air to the first space W 1  and the second space W 2  through the air flow path P. The first cooling device  150  may be received in the inner cover  300 . The fan  181  may forcedly circulate the air heat exchanged with the first cooling device  150 , and the air circulated by the fan  181  may be discharged and guided to the first space W 1  and the second space W 2  by the discharge guide  202  and the inner cover  300 . 
     The discharge guide  202  may face the first space W 1 , and the discharge hole  204  and the suction hole  205  may be formed in the discharge guide  202 . A portion of the discharge guide  202  facing the first space W 1  may include a heating air generation module (HG) module  184  and a first temperature sensor  190 . The HG module  184  may include a circulation fan  186 . The HG module  184  may include a purifying unit  185  such as an air purifying filter and may purify the air in the first space W 1 . 
     The circulation fan  186  may be provided in the inner guide  200 . In the inner guide  200 , when the circulation fan  186  is operated, a circulation flow path P 4  through which air flowing by the circulation fan  186  passes may be formed. When the circulation fan  186  is driven, the inner guide  200  may have an inlet  188  through which air in the storage space flows into the circulation flow path P 4 . The inner guide  200  may have an outlet  189  through which air from the circulation flow path P 4  is discharged into the storage space. The inlet  188  and the outlet  189  may communicate with the first space W 1 . The circulation fan  186  may circulate air in the first space W 1  into the circulation flow path P 4  and the first space W 1 . 
     The purification unit  185  may be provided in the circulation flow path P 4 , and the air passing through the circulation flow path P 4  may be purified by the purification unit  185 . The inner guide  200  may further include an inlet body  187  that forms the discharge guide  202  and the inlet  188 . 
     The inner cover  300  may be connected to the discharge guide  202 . The inner cover  300  may face the second space W 2 , and the additional discharge port  321  and the additional suction port  341  may be formed in the inner cover  300 . The additional suction port  341  may be formed under the inner cover  300 , and the air sucked into the additional suction port  341  may flow to the first cooling device  150 . 
     The second temperature sensor  390  may be provided in the inner cover  300  and configured to sense the temperature of the second space W 2 . The refrigerator may perform a heating mode H (see  FIG. 4 ) by using a heating device. The heating device may be operated independently of the first cooling device  150  provided in the air flow path P. 
     The refrigerator may perform the cooling mode E (see  FIG. 4 ) by the first cooling device  150  provided in the air flow path P and perform the heating operation H by the heating device. The heating device may heat only one of the first space W 1  and the second space W 2  and may be provided for each of the first space W 1  and the second space W 2 . 
     The heating device may include a first heating device  171  for heating the first space W 1 . The first heating device  171  may include a pair of first side heating devices  173  and  174  provided in the first body  8 C facing the first space W 1 . The first heating device  171  may further include an inner heating device  175  arranged on the partition member  3  or the shelf  2 . The inner heating device  175  may be exposed to the partition member  3 , the shelf  3 , or the outer surface of the heating body to directly heat the air in the storage space. 
     The heating device may further comprise a second heating device  172  for heating the second space W 2 . The second heating device  172  may include a pair of second side heating devices  176  and  177  provided on the second body  8 D towards the second space. The second heating device  172  may further include a lower heating device  178  provided in the lower body of the inner case  8 . 
     The controller  30  may control the heating device. The controller  30  may operate or stop the heating device. When the heating device is a heater, the operation of the heating device may mean that the heater is heated, and for example, it may be the case that the heater turns on. Stopping the heating device may mean that the heater is not heated, for example, it may be the case that the heater turns off. 
     The controller  30  may operate or stop the first cooling device  150 . When the first cooling device  150  is an evaporator, the operation of the first cooling device  150  may mean that the refrigerant flows to the first cooling device  150  and may be a first mode in which the compressor  100  is turned on, and the refrigerant valve guides the refrigerant to the first cooling device  150 , for example. In addition, the stop of the first cooling device  150  may mean that the refrigerant does not flow to the first cooling device  150  and may be a second mode in which the refrigerant valve does not supply the refrigerant to the evaporator and guides the refrigerant to the second cooling device  160 , for example. 
     Examples of the second cooling device  160  may be a heat absorbing body of the thermoelectric element or the second evaporator  160  through which the refrigerant passes. Hereinafter, the second cooling device is described with the same reference numeral  160  used for the second evaporator, which may be one example of the second cooling device. 
     The refrigerator may selectively supply the refrigerant to the first cooling device  150  and the second cooling device  160  according to the mode of the refrigerant valve. Hereinafter, the refrigerant valve is described with the same reference numeral  120  used for the flow path switching mechanism, for convenience. 
     The refrigerant valve  120  may be selectively implemented in a first mode of guiding the refrigerant to the first cooling device and a second mode of guiding the refrigerant to the second cooling device. When the cooling in the temperature of the first storage chamber W (hereinafter, referred to as a first storage chamber temperature) is not satisfied, the controller  30  may control the refrigerant valve  120  according to the first mode. 
     When the first storage chamber W is partitioned into the first space W 1  and the second space W 2 , if the temperature of any one of the second spaces W 2  and the first spaces W 1  is equal to or higher than the target temperature upper limit value, the cooling in the first storage chamber temperature may not be satisfied. If the temperature of the first space W 1  is equal to or higher than the target temperature upper limit value of the first space W 1  or if the temperature of the second space is equal to or higher than the target temperature upper limit value of the second space W 2 , the controller  30  determines that, in the first storage chamber temperature, the cooling is not satisfied. As described above, in the first storage chamber temperature, if the cooling is not satisfied, the controller  30  may control the refrigerant valve  120  in the first mode. 
     If the temperature of each of the second space W 2  and the first space W 1  is equal to or lower than the target temperature lower limit value, the first storage chamber temperature may be satisfied. If the temperature of the first space W 1  is equal to or higher than the target temperature upper limit value of the first space W 1  and the temperature of the second space is equal to or higher than the target temperature upper limit value of the second space W 2 , the controller  30  may determine that, in the first storage chamber temperature, the cooling is satisfied. As described above, when the temperature of the first storage chamber is satisfied, the controller  30  may control the refrigerant valve  120  in the second mode. 
     The controller  30  may perform a general operation of adjusting the temperature of the first storage chamber W, and in the general operation, the controller  30  may perform the cooling operation E and the heating operation H for each of the spaces W 1  and W 2 . In the cooling mode of the first space W 1 , the first cooling device  150  and the fan  181  may be operated, and the first heating device  171  may be stopped. In the refrigerator, the refrigerant valve, the compressor  100 , and the like may be controlled so that the refrigerant is supplied to the first cooling device  150 , and the first damper  191  may be opened. 
     In the heating mode of the first space W 1 , the first heating device  171  may be operated. In this case, at least one of the fan  181  and the circulation fan  186  may be operated. In the cooling mode of the second space W 2 , the first cooling device and the fan  181  may be operated, and the second heating device  172  may be stopped. In this case, the refrigerator may control the refrigerant valve, the compressor  100 , and the like so that the refrigerant is supplied to the first cooling device  150 , and the second damper  192  may be opened. In the heating mode of the second space W 2 , the second heating device  172  may be operated. In this case, the fan  181  may be activated or stopped. 
     The controller  30  may selectively perform the general operation of adjusting the temperature of the second storage chamber W 2  and the door load response operation of the second storage chamber. The door load response operation of the second storage chamber may be a special operation that may be performed when the load of the second storage chamber W 2  is rapidly increased after the second door  6  is opened. 
     The controller  30  may control the refrigerant valve  120  to allow the refrigerant to flow to the second cooling device  160  during the door load response operation of the second storage chamber. The door load response operation of the second storage chamber may be performed to quickly lower the temperature of the second storage chamber W 2  and may be performed in preference to the general operation of the second storage chamber. 
     In the refrigerator, the cooling in the first storage chamber temperature may not be satisfied, and the second storage chamber temperature may not be satisfied. The controller  30  may perform the general operation of the first storage chamber W in preference to the general operation of the second storage chamber C. If the cooling in the first storage chamber temperature is not satisfied and the cooling in the second storage chamber temperature is not satisfied, the controller  30  may control the refrigerant valve  120  in the first mode to preferentially cool the first storage chamber. 
     If the cooling in the temperature of at least one of the first space W 1  and the second space W 2  of the first storage chamber W is not satisfied, and the cooling in the temperature of the second storage chamber C is not satisfied, the controller  30  may control the refrigerant valve  30  to the first mode until the temperature of each of the first space W 1  and the second space W 2  changes to cooling satisfaction. When the cooling in the temperature of each of the first space W 1  and the second space W 2  is satisfied, the controller  30  may control the refrigerant valve  30  in the second mode to cool the second storage chamber C. 
     The controller  30  may control the refrigerant valve  30  in the first mode and then control the refrigerant valve  30  in the second mode if the temperature of the first storage chamber is satisfied. The controller  30  may stop the compressor  100  when the temperature of the second storage chamber is satisfied after controlling the refrigerant valve in the second mode. 
     In the refrigerator, during the operation thereof, the first storage chamber temperature may not be satisfied and the second storage chamber may be a door load response condition. The controller  30  may control the general operation of the first storage chamber W in preference to the door load response operation of the second storage chamber W 2 . 
     The controller  30  may control the refrigerant valve  120  to the first mode when the second storage chamber is a door load corresponding condition and the cooling in the first storage chamber temperature is not satisfied. The controller  30  may control the refrigerant valve  30  in the first mode, and then control the refrigerant valve  30  in the second mode if the temperature of the first storage chamber is satisfied. 
     The controller  30  may end the door load response operation when a set time elapses after controlling the refrigerant valve in the second mode. The controller  30  may stop the compressor  100  when the first storage chamber temperature is satisfied and the second storage chamber temperature is satisfied at the end of the door load response operation. 
     If the second storage chamber is in a door load response condition, the heating in the first space W 1  is not satisfied, and the heating in the second space W 2  is not satisfied, the controller  30  may operate the first storage chamber W and the second storage chamber C independently, for this purpose, operate the heating device, and control the refrigerant valve  120  in the second mode. The controller  30  may end the door load response operation when the set time elapses after controlling the refrigerant valve in the second mode. The controller  30  may stop the compressor  100  when the second storage chamber temperature is satisfied at the end of the door load response operation. 
     Referring to  FIG. 16 , the refrigerator may perform a general operation (hereinafter, referred to as a first storage chamber general operation) for adjusting the temperature of the first storage chamber W or may perform a door load response operation (hereinafter, referred to as a second chamber load response operation) for responding to the load of the second storage chamber C. When the refrigerator requires the first storage chamber general operation and also requires the second storage chamber load response operation, the refrigerator may perform the general operation of the first storage chamber and then perform the second storage chamber load response operation. 
     The start condition of the load response operation of the second storage chamber may be a case where the external temperature of the refrigerator (hereinafter, referred to as “outside temperature”) is a setting range (e.g., 18° C. to 34° C.), and the second storage chamber temperature is equal to or higher than the target temperature of the second storage chamber within a set time (e.g., 2 minutes 30 seconds to 3 minutes 30 seconds) after the second door is opened. If the outside temperature is within the set range (e.g., 18° C. to 34° C.) and the second storage chamber temperature is equal to or higher than the target temperature upper limit value within the set time (for example, 3 minutes) after the second door is opened, the controller  30  may determine whether or not the cooling dissatisfaction condition of the second storage chamber is made. 
     The controller  30  may perform the first storage chamber general operation without starting the second storage chamber load response operation first if the first storage chamber cooling dissatisfaction condition is made even if the start condition of the second storage chamber load response operation as described above is satisfied (S 1 )(S 2 )(S 3 )(S 4 ). Here, the first storage chamber cooling dissatisfaction condition may be a case where the temperature of the first storage chamber is equal to or higher than a target temperature upper limit value of the first storage chamber and may be a case where at least one condition of the temperature of the first space W 1  being equal to or higher than the target temperature upper limit value of the first space and the temperature of the second space W 2  being equal to or higher than the target temperature upper limit value of the second space is satisfied in a case where the first storage chamber includes the first space W 1  and the second space W 2 . 
     In the general operation of the first storage chamber, the temperature of the first storage chamber may decrease to the target temperature lower limit value of the first storage chamber or less, and when the temperature of the first storage chamber is the target temperature lower limit value of the first storage chamber or less, the controller  30  may determine as the first storage chamber cooling satisfaction and end the first storage chamber general operation (S 4 ). The controller  30  may control the refrigerant valve in the second mode, and the refrigerator may cool the second storage chamber C after the temperature of the first storage chamber is satisfied with cooling. 
     Referring to  FIG. 17 , when the refrigerator requires the first storage chamber general operation and also requires the second storage chamber heavy load response operation, the refrigerator may perform the general operation of the first storage chamber and then perform the second storage chamber heavy load response operation. The load response operation according to the start condition described in  FIG. 16  may be referred to as “first load response operation”, and the heavy load response operation according to the start condition described in  FIG. 17  may be referred to as “second load response operation”. 
     The start condition of the second storage chamber heavy load response operation may be a case where the outside temperature of the refrigerator (hereinafter, referred to as an outside temperature) is within a set range (18° C. to 34° C.), the second storage chamber temperature is equal to or higher than a load setting temperature (for example, the second storage chamber target temperature upper limit value+4° C.) within the first setting time (a range of 9 minutes to 10 minutes, for example, 10 minutes) after the second door is opened, and the second storage chamber temperature is equal to or higher than the target temperature upper limit value within the second setting time (for example, 60 minutes) after the second door is opened. When the start condition of the second storage chamber heavy load response operation is satisfied, the controller  30  may determine whether the start condition is a cooling dissatisfaction condition of the second storage chamber or not (S 11 )(S 12 )(S 13 )(S 14 ). 
     The controller  30  may perform the general operation of the first storage chamber without starting the second storage chamber load response operation first if the first storage chamber cooling dissatisfaction condition is made even if the start condition of the second storage chamber heavy load response operation as described above is satisfied. (S 11 )(S 12 )(S 13 )(S 14 )(S 15 ). In the general operation of the first storage chamber, the temperature of the first storage chamber may be decreased to the target temperature lower limit value of the first storage chamber or less, and if the temperature of the first storage chamber is equal to or lower than the target temperature lower limit value of the first storage chamber, the controller  30  may determine this state as cooling satisfaction and may perform the second storage chamber heavy load operation (S 15 )(S 16 ). 
     Referring to  FIG. 18 , the refrigerator may be configured as a switching chamber in which the first storage chamber W may change its target temperature range, and the first storage chamber W may be used as a wine chamber or a general chamber (for example, a refrigerating chamber) according to a user&#39;s input. Hereinafter, the same configuration as that of the first example of operation of the refrigerator is omitted in order to avoid duplicate description. 
     If the start condition of the load response operation is satisfied, the controller  30  may determine whether the first storage chamber W is a wine chamber or a general chamber (S 1 ) (S 2 ) (S 23 ). If the first storage chamber is determined to be a wine chamber and the first storage chamber cooling is in an unsatisfied condition, the controller  30  may perform the first storage chamber general operation without first starting the second storage chamber load response operation (S 23 )(S 24 )(S 25 ). 
     In the general operation of the first storage chamber, the temperature of the first storage chamber may be decreased to the target temperature lower limit value of the first storage chamber or less, and if the temperature of the first storage chamber is equal to or lower than the first storage chamber target temperature, the controller  30  may determine this state as cooling satisfaction. 
     If the first storage chamber (W) is a general chamber and the first storage chamber temperature is higher than the first storage chamber target temperature upper limit value, the controller  30  may determine whether the first storage chamber is currently operating under the load response operation (S 23 )(S 26 )(S 27 ). The controller  30  may perform the first storage chamber load response operation if the first storage chamber is currently in the load response operation (S 27 )(S 28 ). 
     The controller  30  may perform the simultaneous cooling operation when the first storage chamber is not currently under a load response operation (S 27 )(S 29 ). An example of the simultaneous operation may be an operation in which the first storage chamber W and the second storage chamber C are cooled together. 
     The controller  30  may start the operation of the second storage chamber when the first storage chamber W is a wine chamber and the first storage chamber W is satisfied with cooling (S 23 )(S 24 )(S 30 ). The controller  30  may start the operation of the second storage chamber when the first storage chamber W is the general storage chamber and the first storage chamber temperature is lower than the first storage chamber target temperature upper limit value (S 23 )(S 26 )(S 30 ). 
     The controller  30  may control the refrigerant valve in the second mode, and the refrigerator may cool the second storage chamber C (S 30 ). The controller  30  may end the operation of the second storage chamber if the time of operation of the second storage chamber is longer than the set time (for example, 1 hour) (S 31 )(S 32 ). 
     Referring to  FIG. 19 , the controller  30  may determine whether the first storage chamber is a wine chamber or a general chamber when the start condition of the second storage chamber heavy load response operation is satisfied (S 11 )(S 12 )(S 33 ). If the first storage chamber is determined to be operating as a wine chamber and the first storage chamber cooling is in a dissatisfaction condition (e.g., the first chamber is too warm), the controller  30  may perform the first storage chamber general operation without first starting the second storage chamber load response operation (S 33 )(S 34 )(S 35 ). 
     In the general operation of the first storage chamber, the temperature of the first storage chamber may be decreased to the target temperature lower limit value of the first storage chamber or less. The controller  30  may determine this state as first storage chamber cooling satisfaction. 
     If the first storage chamber W is a normal chamber, the controller  30  may determine whether the first storage chamber is currently operating in the load response operation (S 33 )(S 37 ). The controller  30  may perform the first storage chamber load response operation if the first storage chamber is currently in the load response operation (S 37 )(S 38 ). 
     If the first storage chamber is not currently operating in load response operation, the controller  30  may perform a first step second storage chamber cooling (S 39 ). Thereafter, the controller  30  may compare the first step load response operation time with the set time (for example, 12 hours), and if the first stage load response operation time is greater than the set time, the controller  30  may perform the second step second storage chamber cooling (S 40 )(S 41 ). The controller  30  may compare the second step load response operation time with the set time (for example, 2 hours) and end the load response operation if the second step load response operation time is greater than the set time (S 42 ) (S 43 ). 
     A refrigerator according to an embodiment of the present disclosure may include a cabinet configured to be formed with a first storage chamber and a second storage chamber, a door configured to open and close the second storage chamber, a first cooler and a heater configured to adjust the temperature of the first storage chamber, a second cooler configured to adjust a temperature of the second storage chamber, and a controller configured to perform a general operation of the first storage chamber in preference to door load response operation of the second storage chamber, of the general operation of adjusting the temperature of the first storage chamber and the door load response operation of the second storage chamber. The refrigerator may further include a refrigerant valve configured to selectively perform a first mode of guiding refrigerant to the first cooler and a second mode of guiding refrigerant to the second cooler. 
     The controller may be configured to control the refrigerant valve to the first mode when the second storage chamber is the door load response condition and the first storage chamber temperature is unsatisfied with cooling. The controller may be configured to control the refrigerant valve to the second mode if the temperature of the first storage chamber is satisfied after controlling the refrigerant valve to the first mode. 
     The controller may be configured to end the door load response operation if a set time elapses after controlling the refrigerant valve to the second mode. The first storage chamber may be provided with a partition member for partitioning the first space and the second space. If one of the first space and the second space may be unsatisfied with cooling, the first storage chamber temperature is unsatisfied with cooling. 
     If the second storage chamber is in a door load response condition and the first storage chamber is unsatisfied with heating, the controller may operate the heating device and control the refrigerant valve to the second mode. The heating device may include a first heating device for heating the first space and a second heating device for heating the second space. If the first space is unsatisfied with heating and the second space is unsatisfied with heating, the first storage chamber temperature may be unsatisfied with heating. According to an embodiment of the present disclosure, the goods stored in the first storage chamber may be stored to minimize the temperature deviation as much as possible. 
     In certain implementations, a refrigerator may comprise: a cabinet providing a first storage chamber and a second storage chamber; a door configured to open and close the second storage chamber; a first heat exchanger configured to cool the first storage chamber; a second heat exchanger configured to cool the second storage chamber; and a controller configured to manage the first heat exchanger and the second heat exchanger such that the second heat exchanger is operated to cool the second storage chamber during a set time period after the door is opened based on: (1) a temperature of the second storage chamber being greater than a set temperature associated with the second storage chamber, and (2) the first heat exchanger is not being operated. 
     In certain implementations, a refrigerator may comprise: a refrigeration chamber that is accessed by a first door; a freezer chamber that is accessed by a second door; a first evaporator to cool the first chamber; a second evaporator to cool the second chamber; a compressor to circulate refrigerant; a valve to distribute refrigerant to at least one of the first evaporator or the second evaporator; and a controller to activate the compressor and manage the valve during a set time period after the second door is opened such that: refrigerant is distributed to the first evaporator and not to the second evaporator when a temperature of the refrigeration chamber is more than a first set temperature during the set time period, and refrigerant is distributed to the second evaporator and not to the first evaporator when the temperature of the refrigeration chamber is less than or equal to the first set temperature during the set time period. 
     This application is also related to U.S. application Ser. No. 16/725,551 filed Dec. 23, 2019, U.S. application Ser. No. 16/725,428 filed Dec. 23, 2019, U.S. application Ser. No. 16/725,436 filed Dec. 23, 2019, U.S. application Ser. No. 16/725,092 filed Dec. 23, 2019, U.S. application Ser. No. 16/725,271 filed Dec. 23, 2019, U.S. application Ser. No. 16/725,318 filed Dec. 23, 2019, and U.S. application Ser. No. 16/725,071 filed Dec. 23, 2019, the entire contents of which are hereby incorporated by reference. 
     It will be understood that when an element or layer is referred to as being “on” another element or layer, the element or layer can be directly on another element or layer or intervening elements or layers. In contrast, when an element is referred to as being “directly on” another element or layer, there are no intervening elements or layers present. As used herein, the term “and/or” includes any and all combinations of one or more of the associated listed items. 
     It will be understood that, although the terms first, second, third, etc., may be used herein to describe various elements, components, regions, layers and/or sections, these elements, components, regions, layers and/or sections should not be limited by these terms. These terms are only used to distinguish one element, component, region, layer or section from another region, layer or section. Thus, a first element, component, region, layer or section could be termed a second element, component, region, layer or section without departing from the teachings of the present invention. 
     Spatially relative terms, such as “lower”, “upper” and the like, may be used herein for ease of description to describe the relationship of one element or feature to another element(s) or feature(s) as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation, in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, elements described as “lower” relative to other elements or features would then be oriented “upper” relative to the other elements or features. Thus, the exemplary term “lower” can encompass both an orientation of above and below. The device may be otherwise oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly. 
     The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the singular forms “a”, “an” and “the” are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will be further understood that the terms “comprises” and/or “comprising,” when used in this specification, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof. 
     Embodiments of the disclosure are described herein with reference to cross-section illustrations that are schematic illustrations of idealized embodiments (and intermediate structures) of the disclosure. As such, variations from the shapes of the illustrations as a result, for example, of manufacturing techniques and/or tolerances, are to be expected. Thus, embodiments of the disclosure should not be construed as limited to the particular shapes of regions illustrated herein but are to include deviations in shapes that result, for example, from manufacturing. 
     Unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. It will be further understood that terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning that is consistent with their meaning in the context of the relevant art and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein. 
     Any reference in this specification to “one embodiment,” “an embodiment,” “example embodiment,” etc., means that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one embodiment. The appearances of such phrases in various places in the specification are not necessarily all referring to the same embodiment. Further, when a particular feature, structure, or characteristic is described in connection with any embodiment, it is submitted that it is within the purview of one skilled in the art to effect such feature, structure, or characteristic in connection with other ones of the embodiments. 
     Although embodiments have been described with reference to a number of illustrative embodiments thereof, it should be understood that numerous other modifications and embodiments can be devised by those skilled in the art that will fall within the spirit and scope of the principles of this disclosure. More particularly, various variations and modifications are possible in the component parts and/or arrangements of the subject combination arrangement within the scope of the disclosure, the drawings and the appended claims. In addition to variations and modifications in the component parts and/or arrangements, alternative uses will also be apparent to those skilled in the art.