Abstract:
Provided is a cooling apparatus that quickly cools beverages such as drinks or alcohols, can be installed on a refrigerator or a freezer, and reduces cooling time.

Description:
TECHNICAL FIELD 
       [0001]    The present disclosure relates to a cooling apparatus and a refrigerator including the cooling apparatus. 
       BACKGROUND ART  
       [0002]    A refrigerator is a home appliance providing a low-temperature storage that can be opened and closed by a door for storing foods at a low temperature. To this end, the storage of the refrigerator is cooled by using air which is cooled by heat exchange with refrigerant in a refrigeration cycle. 
         [0003]    Along with the change of people&#39;s eating patterns and preference, large and multifunctional refrigerators have been introduced, and various comfortable structures have been added to refrigerators. 
         [0004]    For example, the consumer&#39;s needs for a cooling apparatus that can quickly cool beverages such as drinks or alcohols which exist at room temperature are being increased. For this, various types of cooling apparatuses disposed at a side in a refrigerator to quickly cool drinks or alcohols are proposed. 
       DETAILED DESCRIPTION OF THE INVENTION 
     Technical Problem 
       [0005]    Embodiments provide a cooling apparatus, in which a driving motor is connected to an agitating member to convert a rotation of the driving motor into a reciprocation, thereby swinging the agitating member and agitating a beverage in a beverage container. 
         [0006]    Embodiments also provide a cooling apparatus, in which at least one beverage container having an arbitrary size is placed on an agitating member. 
         [0007]    Embodiments also provide a refrigerator including a cooling apparatus therein, in which closing of a cover of the cooling apparatus is linked with closing of a door of the refrigerator. 
         [0008]    Embodiments also provide a cooling apparatus including a driving assembly that includes a single driving motor to drive a suction fan and an agitating member. 
       Technical Solution 
       [0009]    In one embodiment, a cooling apparatus includes: a case including a cool air introduction opening and a cool air discharge opening; a drawer drawable from the case; a swingable agitating member installed on the drawer, a beverage container being placed on the agitating member; and a driving assembly disposed in the case, and providing power to swing the agitating member, wherein the driving assembly includes a driving motor providing torque, and a transmission unit connecting the driving motor to the agitating member, and swinging the agitating member with the torque from the driving motor. 
         [0010]    In another embodiment, a refrigerator includes: a cabinet, which is provided with a refrigerator compartment, a freezer compartment, and a heat exchanging compartment provided with an evaporator; a door opening and closing the refrigerator compartment and the freezer compartment; and a cooling apparatus disposed in the refrigerator, and receiving cool air from the heat exchanging compartment to cool a beverage container therein, wherein the cooling apparatus includes: a case including a cool air introduction opening and a cool air discharge opening; a drawer drawable from the case; a swingable agitating member installed on the drawer, and inclined to obliquely install the beverage container; a driving assembly, which includes a driving motor disposed on the case, and providing torque, and a transmission unit connecting the driving motor to the agitating member to swing the agitating member; and a suction fan rotated by a fan motor disposed at an outside of the case, and sucking air from the case. 
       Advantageous Effect 
       [0011]    The cooling apparatus configured as described above and the refrigerator including the cooling apparatus have the following effects. 
         [0012]    First, the driving assembly of the refrigerator swings the agitating member on which the beverage container is placed. Thus, a beverage is agitated in the beverage container to reduce a temperature variation of the beverage and quickly cool the beverage. 
         [0013]    Secondly, the refrigerator includes the suction fan to increase a flow rate of cool air, thus, improving heat exchange between the beverage container and the cool air. Accordingly, heat exchange efficiency is improved. 
         [0014]    Cool air supplied into the case has a high flow rate, and perpendicularly collides with the beverage container, so as to increase the amount of heat exchange per unit time, thereby improving heat exchange efficiency. 
         [0015]    Thirdly, when the cover is opened, the upper end of the cover is disposed at the upper outside of the rotation shaft of the cover. Thus, in this state, the cover is closed in conjunction with the door of the refrigerator by closing the door without separate manipulation, thereby conveniently using the refrigerator. 
         [0016]    Fourthly, since the refrigerator includes the single driving motor to drive the suction fan and the agitating member, when the cooling apparatus is driven, a heat load in the refrigerator can be minimized, thereby reducing power consumption. 
         [0017]    Fifthly, the agitating member includes the neck holder supported by the elastic member. Thus, a beverage container having an arbitrary size or a plurality of beverage containers can be stably placed on the agitating member, and the agitating member can stably operate. 
     
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
         [0018]      FIG. 1  is a front view illustrating refrigerator doors when being opened according to an embodiment. 
           [0019]      FIG. 2  is a perspective view illustrating an inner structure of a refrigerator including a cooling apparatus according to an embodiment. 
           [0020]      FIG. 3  is a cross-sectional view taken along line  3 - 3 ′ of  FIG. 2 . 
           [0021]      FIG. 4  is a perspective view illustrating a cooling apparatus according to an embodiment. 
           [0022]      FIG. 5  is a cross-sectional view taken along line  5 - 5 ′ of  FIG. 4 . 
           [0023]      FIG. 6  is a cut-away perspective view taken along line  6 - 6 ′ of  FIG. 4 . 
           [0024]      FIG. 7  is an exploded perspective view illustrating the front part of the cooling apparatus. 
           [0025]      FIG. 8  is a perspective view illustrating the agitating member. 
           [0026]      FIG. 9  is an exploded perspective view illustrating the agitating member of the cooling apparatus. 
           [0027]      FIG. 10  is a schematic view illustrating a beverage container placed on the agitating member. 
           [0028]      FIG. 11  is a schematic view illustrating two beverage containers placed on the agitating member. 
           [0029]      FIG. 12  is a schematic view illustrating a bottle placed on the agitating member. 
           [0030]      FIGS. 13 and 14  are schematic views illustrating a swing of the agitating member. 
           [0031]      FIG. 15  is perspective view illustrating a state in which the cover of the cooling apparatus is opened. 
           [0032]      FIGS. 16 and 17  are side views illustrating a process in which the cover and a door of a refrigerator are closed according to an embodiment. 
           [0033]      FIG. 18  is a cross-sectional view illustrating an inner configuration of a cooling apparatus according to an embodiment. 
           [0034]      FIG. 19  is a perspective view illustrating a front part of a cooling apparatus according to an embodiment. 
           [0035]      FIG. 20  is a perspective view illustrating the rear part of the cooling apparatus. 
           [0036]      FIG. 21  is an exploded perspective view illustrating the cooling apparatus. 
           [0037]      FIG. 22  is an exploded perspective view illustrating a housing of a gear assembly of the cooling apparatus. 
           [0038]      FIG. 23  is a perspective view illustrating an operation of the cooling apparatus. 
       
    
    
     DETAILED DESCRIPTION FOR CARRYING OUT THE INVENTION 
       [0039]    Reference will now be made in detail to the embodiments of the present disclosure, examples of which are illustrated in the accompanying drawings. 
         [0040]      FIG. 1  is a front view illustrating refrigerator doors when being opened according to an embodiment.  FIG. 2  is a perspective view illustrating an inner structure of a refrigerator including a cooling apparatus according to an embodiment.  FIG. 3  is a cross-sectional view taken along line  3 - 3 ′ of  FIG. 2 . 
         [0041]    A cooling apparatus according to an embodiment may be disposed in a storing space of a refrigerator for storing a food at low temperature. 
         [0042]    In detail, the cooling apparatus is disposed in the refrigerator to perform a quick cooling operation with cool air generated in the refrigerator. 
         [0043]    Although the cooling apparatus is disposed in the refrigerator in the following embodiment, the cooling apparatus may be installed on any apparatus for generating cool air, as well as the refrigerator. 
         [0044]    A refrigerator  1  according to an embodiment includes an outer case  102  constituting the appearance, an inner case  101  installed on the inner portion of the outer case  102  and forming an inner storing space, and an insulating member filling a space between the inner case  101  and the outer case  102 , thereby forming a main body. 
         [0045]    The inner storing space may include a refrigerator compartment  103  for refrigerating a food, and a freezer compartment  104  for freezing a food. The refrigerator compartment  103  is opened and closed by rotations of a pair of refrigerator compartment doors, and the freezer compartment  104  is opened and closed by sliding of a freezer compartment door. In the current embodiment, the storing space is divided into upper and lower portions by a partition  105 , and the refrigerator compartment  103  is disposed over the freezer compartment  104  to form a bottom freezer type refrigerator. 
         [0046]    Furthermore, the cooling apparatus may be installed on a top mount type refrigerator in which a freezer compartment is disposed over a refrigerator compartment, a side-by-side type refrigerator in which a freezer compartment and a refrigerator compartment are disposed side by side, and a refrigerator having one of a freezer compartment and a refrigerator compartment. 
         [0047]    In detail, an evaporating compartment  107  is formed on the rear surface of the freezer compartment  104  by an evaporating compartment wall  106 , and the evaporating compartment  107  accommodates an evaporator  108 . The evaporating compartment wall  106  may be provided with a cool air discharge opening  106   a  for discharging cool air into the freezer compartment  104 , and a cool air suction opening  106   b  disposed in a rear surface of the bottom of the freezer compartment  104  to return cool air from the freezer compartment  104  to the evaporating compartment  107 . 
         [0048]    A refrigerator compartment duct  109  vertically extends on the rear surface of the refrigerator compartment  103 , and the lower end of the refrigerator compartment duct  109  communicates with the evaporating compartment  107 . The front surface of the refrigerator compartment duct  109  may be provided with cool air discharge openings  109   a  to supply cool air from the evaporating compartment  107  to the refrigerator compartment  103 . An upper surface of the partition  105  may be provided with a cool air suction opening (not shown) to return cool air from the freezer compartment  103  to the evaporating compartment  107 . 
         [0049]    A cooling apparatus  10  for quickly cooling a beverage or alcohol may be disposed at a side on the top surface of the partition  105 . The cooling apparatus  10  may include a passage connecting to the evaporating compartment  107  and/or the freezer compartment  104  to fluidly communicate with the evaporating compartment  107  and/or the freezer compartment  104 . For example, the cool air generated in the evaporating compartment  107  may be supplied into the cooling apparatus  10 . A beverage container  2  received in the cooling apparatus  10  may be cooled by the cool air supplied into the cooling apparatus  10 . The cool air which is increased in temperature by heat-exchanging with the beverage container  2  in the cooling apparatus  10  may return to the evaporating compartment  107 . Here, the fluidic communication may represent that the cool air can be circulated between the evaporating compartment  107  and the cooling apparatus  10  by a passage structure such as a duct. Also, the beverage container  2  used in the current embodiment may include various containers including bottles or cans in which water, a beverage, or alcohol is contained. Also, the cooling apparatus  10  may include a cooling compartment defining a space for receiving the beverage container  2  and/or a passage connecting the cooling compartment, the freezer compartment  104 , and the evaporating compartment  107  to each other. 
         [0050]    Hereinafter, a configuration, an operation, and a function of the cooling apparatus  10  will now be described in detail with reference to the accompanying drawings. As illustrated in  FIG. 3 , the cooling apparatus  10  receives cool air from the evaporating compartment  107  through the separate passage, and discharges cool air to the freezer compartment  104 . A more detailed description will be made with reference to other accompanying drawings. 
         [0051]      FIG. 4  is a perspective view illustrating a cooling apparatus according to an embodiment.  FIG. 5  is a cross-sectional view taken along line  5 - 5 ′ of  FIG. 4 .  FIG. 6  is a cut-away perspective view taken along line  6 - 6 ′ of  FIG. 4 .  FIG. 7  is an exploded perspective view illustrating the front part of the cooling apparatus. 
         [0052]    Referring to  FIGS. 4 to 7 , the cooling apparatus  10  may include a cooling compartment and a cool air passage connected to the cooling compartment. 
         [0053]    In detail, the cooling compartment may include: a case  20  forming a storing space for the beverage container  2 ; a cover  60  opening and closing an inlet of the case  20 ; an agitating member  50  selectively accommodated in the case  20 , the beverage container  2  being placed on the agitating member  50 ; a fan motor assembly  30  installed on the case  20  to forcibly move cool air; and a driving assembly  40  coupled to the case  20  to drive the agitating member  50 . 
         [0054]    In more detail, the case  20  has front and rear openings, and has a space accommodating the agitating member  50  and the beverage container  2 . The rear opening of the case  20  may be provided with the driving assembly  40 , and the driving assembly  40  may close the rear opening of the case  20 . 
         [0055]    The front surface of the case  20  is provided with an inlet  21  for receiving the beverage container  2 . The inlet  21  is inclined to increase in length downward, thereby more facilitating access with the beverage container  2 . The inlet  21  is opened and closed by the cover  60  having a corresponding shape to the inlet  21 . A gasket  61  may be disposed at the edge of the cover  60  or the front end of the case  20 . When the cover  60  is closed, the gasket  61  prevents leakage of cool air from the case  20 . 
         [0056]    Cover fixing parts  211  are disposed at the front end of the case  20  provided with the inlet  21 . Fixing members  62  provided to the cover  60  are inserted in and fixed to the cover fixing parts  211  to maintain closing of the cover  60 . The cover fixing parts  211  and the fixing members  62  are disposed at the left and right sides of the cooling apparatus  10  to stably maintain closing of the cover  60 . 
         [0057]    The lower end of the inlet  21  is provided with cover coupling parts  212 . The cover coupling part  212  is coupled to the lower end of the cover  60  through a shaft. Thus, the cover  60  may rotate about the cover coupling part  212  as an axis, to open and close the inlet  21 . 
         [0058]    An opening  22  is disposed in the top surface of the case  20  to check the inside of the case  20  and assemble and repair inner parts. The opening  22  may be covered by an opening cover  221 . The position of the opening  22  may be varied on the case  20 . 
         [0059]    A suction grill  23  may be removably attached to the bottom surface of the case  20 , and be disposed at an outlet of a suction duct  11 . The suction grill  23  is installed on a cool air introduction opening  24  in the bottom surface of the case  20 . 
         [0060]    The cool air introduction opening  24  is disposed at a set position of the case  20 . In this case, the set position of the cool air introduction opening  24  may be a position corresponding to the position of one beverage container  2  placed on the agitating member  50 . Accordingly, cool air passing through the suction grill  23  is entirely directed to the outer surface of the beverage container  2  to cool the beverage container  2 . 
         [0061]    The bottom surface of the suction grill  23  may be provided with a plurality of air holes  231 . In detail, since the air holes  231  have a small diameter, a flow rate of cool air quickly increases, passing through the outlet of the suction duct  11 , that is, the suction grill  23 . Thus, since cool air passing through the air holes  231  forms a jet stream, the air holes  231  may be called jet holes. The air holes  231  are spaced a constant distance from one another, and uniformly distributed in a surface of the suction grill  23 . 
         [0062]    The upper end of the suction grill  23  is bent outward and extends to be hung on the bottom of the case  20 , so that the suction grill  23  can be removably attached to the bottom of the case  20 . In this case, a locking structure may be provided to prevent a removal of the suction grill  23  from the bottom of the case  20  due to sucked air. 
         [0063]    Cool air is vertically discharged from the air holes  231  of the suction grill  23  to a large area of the beverage container  2  placed on the agitating member  50 , that is, to a side surface thereof. When cool air discharged from the air holes  231  perpendicularly contacts the beverage container  2 , cooling efficiency for the beverage container  2  is maximized. 
         [0064]    The agitating member  50  is disposed in the case  20 , and is installed on an agitating member support  25  disposed in the bottom of the case  20 . The agitating member  50  can swing left and right about the agitating member support  25  as an axis in the case  20 , and is connected to the driving assembly  40  to repeatedly and continuously swing a predetermined angle, thereby agitating a beverage in the beverage container  2 . A detailed configuration of the agitating member  50  will be described later. 
         [0065]    The cooling compartment may include the driving assembly  40  to provide driving force to the agitating member  50  that repeatedly rotates left and right in the case  20 . 
         [0066]    The fan motor assembly  30  may include: a suction fan  31  for forcibly moving air; a fan housing  32  accommodating the suction fan  31  and installed on the rear surface of the case  20 ; and a fan motor  33  disposed behind the fan housing  32  and providing torque to the suction fan  31 . 
         [0067]    In detail, cool air generated from the evaporating compartment  107  is sucked with great suction force by the suction fan  31 . Air introduced along the cool air passage into the case  20  is moved at high speed to the rear side of the case  20  by great suction force of the suction fan  31 . At this point, the air contacts the outer surface of the beverage container  2  disposed in the case  20 , to exchange heat. A flow rate of air sucked by the suction fan  31  is higher than that of air blown by a blower. This is because pressure difference between the front and rear sides of the suction fan  31  is quickly increased. In addition, since the flow rate of the air sucked by the suction fan  31  increases, the amount of heat exchange between the beverage container  2  and the air increases. Accordingly, heat exchange efficiency is improved. 
         [0068]    Cool air sucked by the suction fan  31  exchanges heat with the beverage container  2  in the case  20  before the fan motor  33  driving the suction fan  31 . Accordingly, the amount of heat exchange between the cool air and the beverage container  2  relatively increases, and thus, heat exchange efficiency is improved. If a blower blows air, the air blown by the blower passes through a fan motor for driving the blower, and then, exchanges heat with the beverage container  2 . That is, the blown cool air absorbs heat, passing through the fan motor, and then, exchanges heat with the beverage container  2 . Thus, heat exchange efficiency of the suction fan  31  is higher than that of a blower. 
         [0069]    The suction fan  31  may be a centrifugal fan that axially sucks air to radially discharge the air. Air passing through the case  20  horizontally flow as a whole, and should moves downward to return to the evaporating compartment  107 . That is, the direction of the air passing through the case  20  crosses the direction of the air discharged from the suction fan  31 . Thus, a centrifugal fan is appropriated to a passage in which the directions of air cross each other. 
         [0070]    Pneumatic resistance of the suction fan  31  is smaller than that of a blower. For example, air blown by a blower cannot pass through a narrow gap or an obstacle in an air passage, and is spread or flows back. On the contrary, the suction fan  31  sucks air at the inlet thereof to cause pressure difference. Thus, air at the front side of a narrow gap or an obstacle can easily pass through the narrow gap or the obstacle by pressure difference between the front and rear sides thereof. As a result, under the same condition, pneumatic resistance of air sucked by the suction fan  31  is smaller than that of air blown by a blower, and a flow rate of air sucked by the suction fan  31  is larger than that of air blown by a blower. 
         [0071]    In addition, although the suction fan  31  is a centrifugal fan, the structure of the suction fan  31  is different from that of a typical centrifugal fan. In detail, the suction fan  31  includes: a back plate  311  having a circular plate shape; blades  312  disposed on the front surface of the back plate  311 ; and a suction guide  143  disposed on the upper end of the blades  312 . The blades  312  having a predetermined width protrude forward from the front surface of the back plate  311 , and are rounded with a predetermined curvature in a radial direction from the center of the back plate  311 . The suction guide  313  functions as a combination of a typical bell mouth and a typical orifice. That is, the suction guide  313  smoothly guides an air flow from the front side of the fan housing  32  into the suction fan  31 , and prevents a backflow of air discharged in the radial direction along the surfaces of the blades  312 . 
         [0072]    In detail, the suction guide  313  protrudes forward from a circular bottom, and gradually decreases in diameter. In other words, a vertical cross section of the suction guide  313  may have a rounded structure where the suction guide  313  gradually decreases in diameter on a horizontal cross-section from the bottom to the upper end, and has a constant diameter on a horizontal cross-section at a predetermined position. As such, since the outer surface of the suction guide  313  is smoothly rounded, pneumatic resistance applied on sucked air can be minimized, thereby providing a function of an orifice. In addition, the suction guide  313  has a barrel shape extending a predetermined length from the bottom of the suction guide  313  to minimize a back flow of air sucked through an inlet of the suction guide  313 , thereby providing a function of a bell mouth. A grill  314  may be disposed at the front side of the suction guide  313  to prevent introduction of a foreign substance. 
         [0073]    The cool air passage may include the suction duct  11  for supplying cool air from the evaporating compartment  107  to the case  20 , and a return duct  12  for discharging cool air from the case  20  to the freezer compartment  104 . In detail, an inlet (or suction opening) of the suction duct  11  may communicate with the evaporating compartment  107 , and the outlet (or discharge opening) thereof may communicate with the bottom of the case  20 . An inlet of the return duct  12  may be connected to the bottom of the fan housing  32 , an outlet (or discharge opening)  121  thereof may be connected to the freezer compartment  104 . Referring to  FIG. 2 , the discharge opening  121  of the return duct  12  may be disposed on the rear surface of the freezer compartment  104 . 
         [0074]    The driving assembly  40  may include a driving motor  41  generating torque, and a transmission unit  42  connecting the driving motor  41  to the agitating member  50  to rotate the agitating member  50 , which will be described later. 
         [0075]      FIG. 8  is a perspective view illustrating the agitating member.  FIG. 9  is an exploded perspective view illustrating the agitating member of the cooling apparatus. 
         [0076]    Referring to  FIGS. 8 to 9 , the agitating member  50  accommodates the beverage container  2  to shake the beverage container  2 . In detail, the agitating member  50  may include: a front support  51  forming a front surface of the agitating member  50 ; a rear support  52  forming a rear surface of the agitating member  5 ; and a plurality of the holder shafts  53  connecting the front support  51  to the rear support  52 , the beverage container  2  being placed on the holder shafts  53 . 
         [0077]    The front support  51  and the rear support  52  have the same shape, and are coupled to the holder shafts  53 . The front support  51  and the rear support  52  may be installed on the bottom of the case  20  to swing left and right. Since the front support  51  and the rear support  52  have the same shape, the front support  51  will be mainly described hereinafter. 
         [0078]    The front support  51  may include a coupling portion  511  coupled to a coupling member  513 , and extensions  512  extending upward from the left and right sides of the coupling portion  511  and coupled to the holder shafts  53 . 
         [0079]    The coupling portion  511  is disposed in the middle of the front support  51 , and extends downward. The coupling member  513  has a shaft shape, and is coupled to the coupling portion  511  to cross the coupling portion  511 . The coupling member  513  passes through the coupling portion  511  and the agitating member support  25  of the case  20 , so that the front support  51  can rotate left and right about the coupling member  513  as an axis. 
         [0080]    The extensions  512  are disposed at the upper end of the coupling portion  511 . The extensions  512  are disposed at the left and right sides of the front support  51 , and each of the extensions  512  is coupled to two of the holder shafts  53 , so that the beverage container  2  can be placed on the holder shafts  53 . 
         [0081]    The holder shaft  53  horizontally extends in the form of a shaft or a bar, and is connected to the front support  51  and the rear support  52 . The holder shafts  53  are provided in a pair on the upper and lower portions of the extension  512 , and are spaced a predetermined distance from each other, so that the beverage container  2  can be accommodated in a space defined by the holder shafts  53 . Cool air can efficiently flow into the space defined by the holder shafts  53 . Since a distance between the holder shafts  53  at the lower side is smaller than a distance between the holder shafts  53  at the upper side, the beverage container  2  can be more stably placed on the holder shafts  53 . The holder shafts  53  may be disposed at edges of the front support  51  and the rear support  52 . 
         [0082]    A neck holder  54  may be installed on the holder shafts  53  to support the neck of a beverage container such as a wine bottle. The neck holder  54  can move along the holder shafts  53  according to the size of a bottle. 
         [0083]    The neck holder  54  is installed on the holder shafts  53  at the lower side, and includes a first member  541  and a second member  542  spaced apart from each other, and elastic members  543  disposed between the first and second members  541  and  542 . Thus, when the second member  542  moves with the first member  541  fixed, the elastic members  543  are compressed. 
         [0084]    In detail, the elastic members  543  are disposed between the first and second members  541  and  542 , and are provided to the holder shafts  53  on which the first and second members  541  and  542  are installed. Thus, when the second member  542  is moved, the elastic members  543  may be compressed according to the size of the beverage container  2  placed on the agitating member  50 . The holder shafts  53  pass through the elastic members  543 , so that the elastic members  542  can be compressed in the longitudinal direction of the holder shafts  53 . 
         [0085]    The first member  541  has a plate shape, and the central portion thereof is lower than the left and right portions thereof to form a rounded shape. Thus, when a bottle having a long neck as the beverage container  2  is placed on the agitating member  50 , the neck can be placed on the first member  541 . The first member  541  is behind the second member  542 , and may be adjacent to the rear support  52  and be fixed to the holder shafts  53 . 
         [0086]    The second member  542  is disposed before the first member  541 , and is installed on the holder shafts  53  passing through the second member  542 . When the elastic members  543  are not compressed, the second member  542  is disposed at a position corresponding to the rear end of the suction grill  23 . Thus, when the beverage container  2  is placed on the agitating member  50 , the beverage container  2  contacts the second member  542 , and the suction grill  23  is disposed at a position corresponding to the beverage container  2 , thereby effectively cooling the beverage container  2 . 
         [0087]    When a long bottle as the beverage container  2  is placed on the agitating member  50 , or when two cans as the beverage container  2  are placed thereon, the second member  542  moves along the holder shafts  53  to dispose the beverage container  2  at an appropriate position. When the elastic members  543  are compressed, the second member  542  may press and fix the beverage container  2 . Accordingly, the beverage container  2  can be stably fixed to the agitating member  50 . When one of two cans placed on the agitating member  50  is removed, the second member  542  is moved forward by the elasticity of the elastic members  543 , and the other can placed on the agitating member  50  is also moved forward, so that the other one can be easily taken out. 
         [0088]    The central portion of the second member  542  may be lower than their left and right portions fixed by the holder shafts  53 , so as to form a rounded shape. The second member  542  has a predetermined thickness, and a seat guide  542   a  is disposed on a rounded top of the second member  542 . The front or rear side of the seat guide  542   a  with respect to the top center of the second member  542  may be rounded or inclined. That is, a cross-section of the second member  542  increases in height toward the center thereof. Thus, when a bottle as the beverage container  2  is put into the case  20  through the inlet  21 , even when the beverage container  2  contacts the seat guide  542   a  of the second member  542 , the beverage container  2  can smoothly slide over the seat guide  542   a,  and be placed on the neck holder  54 . The upper end of the seat guide  542   a  may be disposed out of the center of the second member  542 , and have a slope or a curved surface that decreases in height forward. 
         [0089]      FIG. 10  is a schematic view illustrating a beverage container placed on the agitating member.  FIG. 11  is a schematic view illustrating two beverage containers placed on the agitating member.  FIG. 13  is a schematic view illustrating two bottles placed on the agitating member. 
         [0090]    Hereinafter, installation states according to the shapes of beverage containers will now be described with reference to  FIGS. 10 to 13 . 
         [0091]    Referring to  FIG. 10 , a can as the beverage container  2  is disposed in the case  20 . In detail, the cover  60  is opened, and the beverage container  2  is inserted through the inlet  21  of the case  20 . At this point, the second member  542  may contact the rear end of the beverage container  2 , to thereby efficiently cool the beverage container  2 . While the beverage container  2  is placed, the second member  542  may be slightly moved rearward (left side of  FIG. 10 ), but returns its initial position by the elasticity of the elastic members  543 , and is disposed at its set position. 
         [0092]    When one can as the beverage container  2  is placed on the agitating member  50 , the rear end of the can corresponds to the rear end of the suction grill  23 . Thus, the entire or most part of the beverage container  2  is disposed at the vertical upper side of the suction grill  23 , and the beverage container  2  is maximally exposed to cool air discharged from the suction grill  23 . Thus, the beverage container  2  can be quickly cooled. 
         [0093]    Referring to  FIG. 11 , two cans as the beverage container  2  are disposed in the case  20 . In detail, the cover  60  is opened, and the beverage container  2  is inserted through the inlet  21  of the case  20 . One of the beverage containers  2  is placed on the agitating member  50 , and then, the other is placed. 
         [0094]    At this point, the beverage container  2  placed first may be moved forward to push the second member  542  rearward, thereby compressing the elastic members  543 . After the two beverage containers  2  are placed, the beverage containers  2  contact the second member  542  and the front support  51 . Since the beverage containers  2  closely contact the front support  51  and the second member  542  by the elasticity of the elastic members  543 , the beverage containers  6  are stably placed during a swing of the agitating member  50 . 
         [0095]    At this point, the middle of the suction grill  23  is disposed between the beverage containers  2 . Thus, cool air discharged through the suction grill  23  can be uniformly supplied to the beverage containers  2 , and a contact area between the cool air and the beverage containers  2  can be maximized. 
         [0096]    Referring to  FIG. 12 , the beverage container  2  put in the case  20  has a bottle shape. In detail, the cover  60  is opened, and the beverage container  2  is inserted through the inlet  21  of the case  20 . 
         [0097]    At this point, the neck of the beverage container  2  is directed rearward, and is placed on the neck holder  54 . While the beverage container  2  is placed on the agitating member  50 , the neck may contact the seat guide  542   a,  and be placed on the neck holder  54  over the seat guide  542   a.  At this point, the second member  542  is disposed between the neck and the body of the beverage container  2  to stably support and fix the beverage container  2 . 
         [0098]      FIGS. 13 and 14  are schematic views illustrating a swing of the agitating member. 
         [0099]    The driving assembly will now be described with reference to  FIGS. 13 and 14 . 
         [0100]    The driving assembly  40  may include the driving motor  41  generating torque, and the transmission unit  42  transmitting the torque from the driving motor  41  to rotate the agitating member  50   
         [0101]    In detail, the driving motor  41  has the same structure as that of a typical electric motor, and may be disposed on the outside of the case  20 . A rotation shaft  411  of the driving motor  41  may extend into the case  20 , and be coupled to the transmission unit  42  in the case  20 . Although the driving motor  41  may be disposed in the case  20 , the driving motor  41  is disposed out of the case  20  to prevent degradation of cooling efficiency of the cooling apparatus  10  due to heat from the driving motor  41 . 
         [0102]    The driving motor  41  may be a typical DC motor. Torque from the driving motor  41  is converted by the transmission unit  42  to swing the agitating member  50 . The driving motor  41  may be a stepping motor that can rotate forward and reverse by a constant angle. Thus, the driving motor  41  can repeatedly rotate forward and reverse by a constant angle, so that the agitating member  50  can swing. 
         [0103]    The transmission unit  42  is installed on the driving motor  41 . The transmission unit  42  includes a rotation member  421  connected to the rotation shaft  411  of the driving motor  41 , and a connecting rod  422  connecting the rotation member  421  to the holder shafts  53 . The rotation shaft  411  of the driving motor  41  is parallel to an extension line of the holder shafts  53 . 
         [0104]    In detail, the rotation member  421  is coupled to the rotation shaft  411  of the driving motor  41 , and rotates together with the rotation shaft  411  when the rotation shaft  411  rotates. The rotation member  421  and the rotation shaft  411  extend in the same direction. The rotation member  421  may include a shaft coupler  421   a  coupled to the rotation shaft  411 , and an extension  42  lb extending in a direction crossing the shaft coupler  421   a  from an end of the shaft coupler  421   a.    
         [0105]    The inner portion of the shaft coupler  421   a  has a shape corresponding to the rotation shaft  411  to couple to the rotation shaft  411  and transmit power from the rotation shaft  411 . Thus, when the rotation shaft  411  rotates, the rotation member  421  also rotates. The extension  421   b  extends from a side of the shaft coupler  421   a.  A connecting rod coupler  421   c  to which the connecting rod  422  is rotatably coupled is disposed at a side of the extension  421   b  spaced apart from the shaft coupler  421   a.  Thus, when the shaft coupler  421   a  rotates, the connecting rod coupler  421   c  rotates along a predetermined trajectory about the shaft coupler  421   a,  and thus, the connecting rod  422  reciprocates with a constant displacement. 
         [0106]    The connecting rod  422  crosses extension directions of the rotation shaft  411  and the holder shafts  53 , and may have a rod shape with a predetermined length. Coupling holes  422   a  are disposed at both ends of the connecting rod  422  to receive shafts. Thus, the coupling hole  422   a  disposed at an end of the connecting rod  422  is rotatably coupled to the connecting rod coupler  421   c,  and the other of the coupling holes  422   a  is connected to the holder shaft  53 . 
         [0107]    The connecting rod  422  may be directly connected to the holder shaft  53 , or be connected to a connection  423  provided to the holder shaft  53 . The connection  423  through which the holder shaft  53  passes may be disposed on an end of the holder shaft  53 . The connection  423  may be rotatably coupled to the coupling hole  422   a  of the connecting rod  422 . The connection  423  may be formed of a plastic material to prevent wear and noise due to friction generated during a rotation of the connecting rod  422 . 
         [0108]    The connecting rod  422  is adjacent to the rear support  52 , and is coupled to the holder shaft  53 . Thus, the transmission unit  42  is disposed a position to minimize the length of the rotation shaft  412  passing through the transmission unit  42  from the rear side of the transmission unit  42 . 
         [0109]    Thus, when the driving motor  41  rotates, the rotation member  421  also rotates, and the connecting rod  422  reciprocates. While the connecting rod  422  reciprocates, the agitating member  50  repeatedly rotates, that is, swings through a predetermined angle. 
         [0110]    In detail, when the driving motor  41  rotates, the rotation member  421  rotates together with the rotation shaft  411  of the driving motor  41 . As illustrated in  FIG. 13 , when the extension  421   b  of the rotation member  421  is disposed at the right side, the connecting rod  422  pushes the holder shaft  53  to the right side. The holder shaft  53  is disposed over the coupling member  513 , and the coupling member  513  is shaft-coupled for rotating the agitating member  50 . Thus, when the connecting rod  422  pushes the holder shaft  53  to the right side, the agitating member  50  rotates clockwise about the coupling member  513  as an axis, and leans to the right side. 
         [0111]    As illustrated in  FIG. 14 , when the extension  421   b  of the rotation member  421  is disposed at the left side, the connecting rod  422  pulls the holder shaft  53  to the left side. Thus, the agitating member  50  rotates counterclockwise about the coupling member  513  as an axis, and leans to the left side. 
         [0112]    As such, torque from the driving motor  41  is transmitted to the agitating member  50  by the transmission unit  42 . Thus, when the driving motor  41  continually rotates, the agitating member  50  repeatedly rotates clockwise and counterclockwise in a set angle range, and thus, the agitating member  5   o  swings left and right. Hereinafter, an operation of a cooling apparatus configured as described above will now be described. 
         [0113]    An discharge end of the suction duct  11  is connected to the bottom of the cooling compartment, particularly, to the bottom of the case  20 . The suction grill  23  is disposed on the bottom of the case  20  connected to the discharge end of the suction duct  11 , and the speed of air sucked through the suction duct  11  increases while passing through the suction grill  23 . As described above, this is because the air holes  231  are disposed in the suction grill  23 . 
         [0114]    The cool air passing through the suction grill  23  at high speed may be discharged in a direction perpendicular to the outer surface of the beverage container  2 . Since the beverage container  2  has a cylindrical shape, when the cool air passing through the suction grill  23  perpendicularly collides with the outer surface of the beverage container  2 , heat exchange efficiency is maximized. When a flow direction of cool air passing through the suction grill  23  is not perpendicular to the outer surface of the beverage container  2 , a portion of the cool air may be discharged out of the case  20 , without colliding with the beverage container  2 . That is, cool air sucked through the suction grill  23  may perpendicularly collide with the outer surface of the beverage container  2  to minimize the amount of cool air discharged without heat exchange. 
         [0115]    The suction fan  31  axially sucks the cool air to radially discharge the cool air, and the fan housing  32  guides the cool air to the freezer compartment  104  through the return duct  12 . 
         [0116]    While the suction fan  31  rotates, the agitating member  50  swings. To this end, the driving motor  41  is rotated. The driving motor  41  may be continuously rotated, or be rotated forward and reverse by a constant angle. The agitating member  50  repeatedly swings according to an operation of the transmission unit  42  connected to the rotation shaft  412  of the driving motor  41 . 
         [0117]    When the suction fan  31  sucks the cool air, and the agitating member  50  swings to agitate the beverage in the beverage container  2 , thereby quickly cooling the beverage. Due to the air guide  55 , the cool air discharged from the suction grill  23  effectively cools the outer surface of the beverage container  2 , thereby more quickly and effectively cooling the beverage in the beverage container  2 . 
         [0118]      FIG. 15  is perspective view illustrating a state in which the cover of the cooling apparatus is opened.  FIGS. 16 and 17  are side views illustrating a process in which the cover and a door of a refrigerator are closed according to an embodiment. 
         [0119]    Referring to  FIGS. 15 to 17 , the cover  60  is manipulated to open the inlet  21  of the case  20 , so that the beverage container  2  can be accommodated in the case  20 . When the cover  60  is manipulated to close the case  20 , leakage of cool air from the case  20  is prevented. 
         [0120]    The lower end of the inlet  21  of the case  20  further protrudes than the upper end thereof. A protrusion length of the inlet  21  increases from the upper side to the lower side, and thus, the inlet  21  is inclined downward. Thus, when the cover  60  is opened, the agitating member  50  and the beverage container  2  are exposed from the case  20  through the inlet  21 , and thus, can be easily perceived and manipulated. 
         [0121]    When the cover  6  is closed, the fixing members  62  provided to the cover  60  are inserted in and fixed to the cover fixing parts  211 . The fixing members  62  are elastically deformed, and thus, can be selectively fixed to the cover fixing parts  211  according to a manipulation of the cover  60 . 
         [0122]    The cover  60  has a shape to open and close the inlet  21 . Thus, when the cover  60  is closed, the rear edge of the cover  60  contacting the inlet  21  has an inclination corresponding to an inclination of the inlet  21 , and the rear surface of the cover  60  is recessed inward to form a predetermined space with the case  20 . 
         [0123]    The cover  60  includes a first surface  64  constituting the top surface of the cover  60  and inclined forward and downward, and a second surface  65  constituting the front surface of the cover  60  and inclined forward and downward from the front end of the first surface  64 . 
         [0124]    In detail, the first surface  64  extends from the rear end of the top surface of the cover  60  to the rear end of the second surface  65 . The level of the rear end of the first surface  64  is equal to or less than the level of the upper end of the case  20 . The first surface  64  extends downward and forward. 
         [0125]    The second surface  65  extends from the front end of the first surface  64  to the front lower end of the cover  60 . The rear end of the second surface  65  is disposed behind a cover rotation shaft  66 , and the front end thereof constitutes the front end of the cooling apparatus  10 . The second surface  65  extends in a direction crossing the first surface  64  to constitute the front surface of the cover  60 . 
         [0126]    A contact portion between the first surface  64  and the second surface  65  is disposed behind a rotation center of the cover  60 . The contact portion between the first surface  64  and the second surface  65  may be rounded. Thus, when a door  3  of a refrigerator is closed, a contact point between the cover  60  and the rear surface of the door  3  can smoothly move from the first surface  64  to the second surface  65 . 
         [0127]    The first surface  64  is provided with a handle  67  for a user to hold. Thus, a user can hold the handle  67  to open and close the cover  60 . 
         [0128]    In detail, when the cover  60  is closed, the cover  60  is rotated counterclockwise (with respect to  FIG. 16 ) with the handle  67  held by a user, and the fixing members  62  are inserted and hook the cover fixing parts  211 . On the contrary, when the cover  60  is opened, the cover  60  is rotated clockwise with the handle  67  held by a user, and the fixing members  62  are removed from the cover fixing parts  211 . 
         [0129]    When the cover  60  and the door  3  are completely opened as illustrated in  FIG. 16 , the upper end of the first surface  64  becomes the front end of the cooling apparatus  10 . The upper end of the first surface  64  is disposed out of the refrigerator, and contacts the door  3  when the door  3  is closed. At this point, the upper end of the first surface  64  is disposed at the upper and front sides of the cover rotation shaft  66 . In this state, the beverage container  2  can be taken out or put in the cooling apparatus  10 . 
         [0130]    In this state, the door  3  can be closed without manipulating the cover  60 . In this state, when the door  3  is closed, the rear surface of the door  3  contacts the upper end of the first surface  64 . Then, when the door  3  is further closed to push the upper end of the first surface  64 , the cover  60  rotates counterclockwise about the cover rotation shaft  66 . Accordingly, the cover  60  is naturally closed. 
         [0131]    While the cover  60  is closed, the rear surface of the door  3  sequentially contacts the upper end of the first surface  64  and the lower end of the second surface  65 . When the door  3  is completely closed, the rear surface of the door  3  contacts the lower end of the second surface  65  as illustrated in  FIG. 17 . Accordingly, the cover  60  completely closes the inlet  21  of the case  20 . 
         [0132]    That is, since the cover  60  can be closed just by closing the door  3  without a separate process for closing the cover  60 , breakage of the cover  60  due to carelessness can be prevented. In addition, the refrigerator can be conveniently used. 
         [0133]    The rear surface of the door  3  may be formed by a door liner, a door dike, a separate accommodation member installed on the door  3 , or an arbitrary structure disposed on the door  3 . 
         [0134]    A refrigerator according to the present disclosure may be described according to various embodiments. Hereinafter, a refrigerator will now be described according to another embodiment. 
         [0135]    In the current embodiment, the cover is provided with a locking unit that is manipulated by a user, so that the cover can be fixed to the case. 
         [0136]    Thus, in the current embodiment, the rest parts except for a cover holder shaft are the same as those of the previous embodiments, and thus, a description thereof will be omitted, and like reference numerals denote like elements. 
         [0137]      FIG. 18  is a cross-sectional view illustrating an inner configuration of a cooling apparatus according to the current embodiment. 
         [0138]    Referring to  FIG. 18 , a cooling apparatus  10  according to the current embodiment includes a case  20  forming an appearance of the cooling apparatus  10 , and an agitating member  50  is disposed in the case  20  to accommodate a beverage container  2 . A suction grill  23  provided with a passage for introducing cool air is disposed on the bottom of the case  20 . A fan motor assembly  30  is disposed at the rear side of the case  20  to forcibly suck and discharge cool air. A driving assembly  70  is provided to the case  20  to repeatedly swing the agitating member  50  during the driving of the fan motor assembly  30 , thereby cooling and agitating a beverage in the beverage container  2 . 
         [0139]    The front surface of the case  20  is provided with an inlet  21  that is opened and closed by a rotatable cover  60 . Thus, the cover  60  is opened, and then, the beverage container  2  can be taken out or put in through the inlet  21 . 
         [0140]    In detail, the cover  60  has a size to correspond to the inlet  21  of the case  20 , and constitutes the front appearance of the cooling apparatus  10 . The lower end of the cover  60  is rotatably coupled through a shaft member to the lower end of the open front surface of the case  20 . 
         [0141]    The top and front surfaces of the cover  60  may be constituted by a first surface  64  and a second surface  65 , which are inclined. The first surface  64  may be provided with a handle  67  that is held for a user to rotate the cover  60 . 
         [0142]    The cover  60  may be provided with a locking unit  68 . The locking unit  68  is coupled to the case  20  to maintain closing of the cover  60 . The locking unit  68  is disposed in the cover  60 , and is exposed from a side of the handle  67  and the rear surface of the cover  60  (the right side of  FIG. 18 ). 
         [0143]    In more detail, the locking unit  68  extends in the back-and-forth direction of the cover  60 , and the front end of the locking unit  68  (the left side of  FIG. 18 ) is provided with a manipulation part  681  that is manipulated by a user. The manipulation part  681  is exposed to the handle  67  that is recessed. Thus, a user can hold the handle  67  and the manipulation part  681  to rotate the cover  60 . 
         [0144]    The locking unit  68  is supported by an elastic member  682  in the cover  60 . Thus, when the locking unit  68  is manipulated, the elastic member  682  can be compressed or stretched. When the manipulation of the locking unit  68  is completed, the locking unit  68  returns to its original position by the elasticity of the elastic member  682 . 
         [0145]    The front end of the locking unit  68  protrudes through the rear surface of the cover  60 . The front end of the locking unit  68  is provided with a catching portion  683 . The catching portion  683  has a hook shape. When the cover  60  is closed, the catching portion  683  is inserted and locked in a locking unit coupling hole  213  that is recessed in the front end of the case  20  or passes through the front end. 
         [0146]    When the cover  60  is closed, a user holds the handle  67  to open the cooling apparatus  10 . At this point, when the user also holds and pulls the manipulation part  681  exposed to the handle  67 , the locking unit  68  is moved forward, and thus, the catching portion  683  is released from the locking unit coupling hole  213 . 
         [0147]    When the locking unit  68  is removed from the locking unit coupling hole  213 , the cover  60  can freely rotate. Accordingly, the cover  60  can be rotated counterclockwise, and be completely opened. Then, the beverage container  2  can be put in or taken out of the case  20 . 
         [0148]    The cover  60  is rotated clockwise to close the cover  60 . When the cover  60  is rotated by a set angle, the catching portion  683  of the locking unit  68  is inserted into the locking unit coupling hole  213 . At this point, the catching portion  683  contacts the locking unit coupling hole  213 , and the locking unit  68  can be smoothly inserted along slopes of the catching portion  683  when the cover  60  is further rotated. When the cover  60  is completely closed, stepped parts of the catching portion  683  are locked to the locking unit coupling hole  213  to maintain the closing of the cover  60 . 
         [0149]    A gasket  61  may be disposed at the edge of the rear surface of the cover  60  or the edge of the open surface of the case  20 . Thus, when the cover  60  is completely closed, the gasket  61  prevents leakage of cool air from the case  20 . 
         [0150]    A refrigerator according to the present disclosure may be described according to various embodiments. Hereinafter, a refrigerator will now be described according to another embodiment. 
         [0151]    In the current embodiment, a single driving motor drives a suction fan and an agitating member such that suction of cool air and agitation of a beverage are simultaneously performed during driving of a cooling apparatus. 
         [0152]    Thus, in the current embodiment, the rest parts except for a driving assembly are the same as those of the previous embodiments, and thus, a description thereof will be omitted, and like reference numerals denote like elements. 
         [0153]      FIG. 19  is a perspective view illustrating a front part of a cooling apparatus according to the current embodiment.  FIG. 20  is a perspective view illustrating the rear part of the cooling apparatus.  FIG. 21  is an exploded perspective view illustrating the cooling apparatus.  FIG. 22  is an exploded perspective view illustrating a housing of a gear assembly of the cooling apparatus. 
         [0154]    Referring to  FIGS. 19 to 22 , a cooling apparatus  10  according to the current embodiment includes a case  20  forming an appearance of the cooling apparatus  10 , and an agitating member  50  is disposed in the case  20 . A suction grill  23  connected to a suction duct  11  is disposed in the bottom surface of the case  20  to supply cool air into the case  20 . 
         [0155]    A suction fan  31  may be disposed behind the case  20  to form an air flow in the case  20 . A transmission unit  73  may be disposed in the case  20  to swing the agitating member  50 . A driving assembly  70  may be disposed behind the case  20  to simultaneously drive the suction fan  31  and the transmission unit  73 . 
         [0156]    The driving assembly  70  may include a driving motor  71  generating torque, and a gear assembly  72  transmitting the torque from the driving motor  71  to the suction fan  31  and the transmission unit  73 . The driving motor  71  and the gear assembly  72  will be described in detail later. 
         [0157]    A fan housing  32  includes a main body  321  forming a space accommodating the suction fan  31 , the gear assembly  72 , and a damping member  74 ; and a cover  322  covering a side of the main body  321 . 
         [0158]    The main body  321  has a side opening covered by the cover  322 , and forms a predetermined space with the cover  322 . The cover  322  includes a suction opening  322   a  that may be provided with a grill  322   b  for preventing introduction of a foreign substance. 
         [0159]    The main body  321  has a bottom opening that communicates with a return duct  12 . The damping member  74  selectively opens and closes the bottom opening of the main body  321 . The damping member  74  operates in conjunction with the driving motor  71 , and thus, is opened when the driving motor  71  is driven, so that cool air can circulate between the cooling apparatus  10  and a freezer compartment  104  or an evaporating compartment  107 . The damping member  74  is closed when the driving motor  71  is stopped, so that cool air is prevented from circulating between the cooling apparatus  10  and a freezer compartment  104  or an evaporating compartment  107 . 
         [0160]    Thus, when the damping member  74  is opened by driving of the driving motor  71 , cool air, which is sucked through the suction duct  11  and the suction grill  23  by the suction fan  31 , cools the beverage container  2  in the case  20 , then, passes through the suction fan  31 , then, is guided by the fan housing  32 , and then, is discharged through the return duct  12 . 
         [0161]    The driving motor  71  is disposed behind the fan housing  32  and is disposed in a motor housing  721 . A rotation shaft  711  of the driving motor  71  passes through the fan housing  32 , and is disposed in the fan housing  32 . The rotation shaft  711  is coupled to the gear assembly  72  disposed in the fan housing  32  to drive the gear assembly  72 . The gear assembly  72  is coupled to the suction fan  31  and the transmission unit  73  to operate the suction fan  31  and the transmission unit  73 . 
         [0162]    In detail, the gear assembly  72  includes a housing  721  accommodating a plurality gears, and a mounting plate  722  for closing the housing  721  and mounting the gears. A driving shaft  723  is disposed at a side of the mounting plate  722 . The driving shaft  723  passes through the mounting plate  722 , and is coupled to the rotation shaft  711  of the driving motor  71  to rotate when the driving motor  71  is driven. 
         [0163]    The front surface of the mounting plate  722  is provided with a first fan gear  724  that is coupled to a rotation shaft  411  of the suction fan  31  to rotate together with the rotation shaft of the suction fan  31 . A second fan gear  725  is disposed on the driving shaft  723  at the front side of the mounting plate  722 . The second fan gear  725  engages with the first fan gear  724  to transmit torque from the driving motor  71 . Thus, when the driving motor  71  is driven, the first and second fan gears  724  and  725  rotate. The suction fan  31  rotates according to the rotation of the second fan gear  725 . At this point, the number of rotations of the suction fan  31  is determined according to a gear ratio of the first fan gear  724  to the second fan gear  725 . 
         [0164]    Another side of the mounting plate  722  is provided with a transmission shaft  726  for transmitting power to the transmission unit  73 . The transmission shaft  726  passes through the mounting plate  722 , and an end thereof is coupled to the rotation member  421  of the transmission unit  73  in the case  20 . 
         [0165]    A transmission shaft gear  726   a  is disposed behind the mounting plate  722 , and is formed on the transmission shaft  726 . A driving shaft gear  723   a  is disposed behind the mounting plate  722 , and is formed on the driving shaft  723 . The rear surface of the mounting plate  722  is provided with one or more speed changer gears  727  such that the transmission shaft gear  726   a  moves in conjunction with the driving shaft gear  723   a.  The number of the speed changer gears  727  and a gear ratio thereof may be varied. 
         [0166]    Since the frequency of rotations of the suction fan  31  may be higher than that of driving of the transmission unit  42 , the speed changer gears  727  may be configured such that the number of rotations of the transmission shaft  726  is smaller than the number of rotations of the driving shaft  723 . Thus, unlike the suction fan  31  that rotates at high speed in the case  20 , the agitating member  50  can by swung at a stable frequency by the transmission unit  73 . 
         [0167]      FIG. 23  is a perspective view illustrating an operation of the cooling apparatus. 
         [0168]    Referring to  FIG. 23  when a signal for operating the cooling apparatus  10  is input according to a user&#39;s operation, the driving assembly  70  operates the suction fan  31  and the agitating member  50  at the same time. 
         [0169]    In detail, when the driving motor  71  is operated, the rotation shaft  711  of the driving motor  71  rotates the driving shaft  723 . Torque from the driving shaft  723  is transmitted to the driving shaft gear  723   a,  the speed changer gears  727 , and the transmission shaft gear  726   a,  which engage with one another, and thus, the transmission shaft  726  rotates. Accordingly, the transmission shaft  726  rotates the rotation member  421  of the transmission unit  73 . Then, the transmission unit  73  swings the agitating member  50  to agitate a beverage in the beverage container  2  placed on the agitating member  50 . Since the transmission unit  73  in the current embodiment is the same in configuration as that of the previous embodiment except that the transmission unit  73  is coupled to the transmission shaft  726 , a description thereof will be omitted. 
         [0170]    Torque from the driving shaft  723  is transmitted to the first fan gear  724  and the second fan gear  725 , which engage with each other, to rotate the suction fan  31 . Thus, the suction fan  31  is driven simultaneously with swing of the agitating member  50  to cool the beverage in the beverage container  2 . 
         [0171]    When the suction fan  31  rotates, suction force is generated. Then, cool air from the evaporating compartment  107  sequentially passes through the suction duct  11  and the suction grill  23 , and is sucked into the case  20  by the suction force. The suction fan  31  axially sucks the cool air from the case  20  to radially discharge the cool air, and the fan housing  32  guides the cool air to the freezer compartment  104  through the return duct  12 . 
         [0172]    When the suction fan  31  sucks the cool air, and the agitating member  50  swings to agitate the beverage in the beverage container  2 , thereby quickly cooling the beverage. 
         [0173]    The driving motor  71  simultaneously drives the suction fan  31  and the transmission unit  73  to provide a simple structure, and thus the possibility of defects and malfunctions is minimized. In addition, the amount of heat generated in the refrigerator is minimized to improve cooling efficiency of the refrigerator. 
         [0174]    The damping member  74  in the fan housing  32  is opened during an operation of the driving motor  71 , and is closed during stopping of the driving motor  71 , thereby preventing a loss of cool air.