Abstract:
A food refrigerator including a refrigerator compartment for storing therein kimchi, fruit, vegetables, greens, drinking water, wine, beer, etc., and an accessory storage compartment for storing therein a variety of accessories related to the use of the food stored in the refrigerator unit.

Description:
CROSS REFERENCE TO RELATED ART 
     This application claims the benefit of Korean Patent Application Nos. 10-2006-0080812 filed Aug. 24, 2006, 10-2006-0080760 filed Aug. 24, 2006, 10-2006-0080764 filed Aug. 24, 2006, and 10-2006-0099768 filed Oct. 13, 2006, the contents of each of which are incorporated herein by reference. 
     BACKGROUND OF THE INVENTION 
     1. Field of the Invention 
     The present invention relates to a food refrigerator including a refrigerator compartment for storing therein kimchi, fruit, vegetables, greens, drinking water, wine, beer, etc. (hereinbelow, referred to simply as “food”), and an accessory storage compartment for storing therein a variety of accessories related to the use of the food stored in the refrigerator compartment. 
     2. Description of the Related Art 
     Generally, as an example of conventional kimchi refrigerators, reference can be made to “A Kimchi Refrigerator” disclosed in Patent Document 1. As shown in  FIG. 37 , the conventional kimchi refrigerator  1  has upper and lower storage compartments  2  and  3 , having respective spaces for storing a variety of foods therein, defined in the upper and lower parts thereof The lower storage compartment  3 , defined in the lower part of the kimchi refrigerator  1 , has a drawer-type opening/closing structure such that a user can open or close the lower storage compartment  3  by horizontally pulling the drawer-type compartment forwards or pushing the compartment backwards. Meanwhile, the upper storage compartment  2 , defined in the upper part of the kimchi refrigerator  1 , has a door-type opening/closing structure having a door  4 , which is opened upwards or closed downwards by a user to open or close the compartment  2 . 
     However, although food, such as kimchi, vegetables, fruit, wine, beer, etc., are stored in the kimchi refrigerator, a variety of accessories, such as corkscrews, bottle openers, kimchi tongs, scissors, knives, bags, etc., related to the use of the food, is not stored in the kimchi refrigerator, but must be stored in another place, such as a multipurpose room in a kitchen, so that users must often make the effort to find the accessories, and may store the accessories in unspecific places after using them, thus easily losing them. 
     SUMMARY OF THE INVENTION 
     Accordingly, the present invention has been made keeping in mind the above problems occurring in the related art, and provides a food refrigerator, which stores therein accessories related to the use of food, such as kimchi, vegetables, fruit, wine, beer, etc., stored in the food refrigerator. 
     In an aspect, the present invention provides a food refrigerator, which includes a refrigerator compartment and an accessory storage compartment defined in the upper surface of the refrigerator compartment. 
     According to the above-mentioned construction, users can conveniently store and use the accessories related to the use of food, such as kimchi, vegetables, fruit, wine, beer, etc., stored in the refrigerator compartment. 
     The food refrigerator may include a first refrigerator unit having a drawer-type storage compartment in the space below the refrigerator compartment, and a second refrigerator unit, having both a door-type storage compartment in an upper part thereof and a drawer-type storage compartment in a lower part thereof and placed beside the first refrigerator unit. 
     A bracket may be placed between the first refrigerator unit and the second refrigerator unit such that the bracket extends from the front to the back of the refrigerator units. In the above state, the front end of the bracket is mounted to the first refrigerator unit, while the rear end is mounted to the second refrigerator unit, so that the first and second refrigerator units, arranged horizontally, can be easily coupled to each other by the bracket. 
     The bracket is provided with a first locking hole in the front end thereof. Further, a second locking hole is longitudinally formed along the rear end of the bracket such that it extends in the direction from the front to the back of the refrigerator units. Thus, the bracket can couple the two refrigerator units to each other such that the interval between the two refrigerator units is adjustable. 
     The refrigerator units may include a first refrigerator unit, having a machine room, and a second refrigerator unit, placed adjacent to the first refrigerator unit. A machine room bracket, provided with a locking part on an edge thereof through bending, may be installed in the machine room. The locking part of the machine room bracket is connected to the second refrigerator unit, thus stably coupling the two refrigerator units to each other, in addition to holding machines in the machine room. 
     The machine room bracket is provided with a plurality of locking parts such that the locking parts are oriented in several directions, so that the second refrigerator unit may be placed at a desired location relative to the first refrigerator unit. 
     Further, the food refrigerator may include: a sliding rail unit, having a fixed rail unit, which is mounted to the inner casing of each of the drawer-type storage compartments, and a movable rail unit, movably mounted to the fixed rail unit and operated in conjunction with a drawer-type door of the drawer-type storage compartment; and a locking/unlocking unit for locking and unlocking the movable rail unit in forward and rearward directions. In the above state, the locking/unlocking unit can prevent the drawer-type door from being undesirably opened. 
     The locking/unlocking unit may include a protrusion, which is operated in conjunction with the movable rail unit; a locking lever having a locking slot for locking the protrusion when the protrusion moves rearwards; an elastic member for elastically biasing the locking lever rearwards; and an unlocked state retaining unit for retaining the unlocked state of the protrusion by rotating the locking lever when the protrusion moves forwards. Thus, the protrusion, which is locked to the locking lever, is elastically pulled rearwards by the elastic member, so that the drawer-type doors can be automatically closed. 
     Further, the unlocked state retaining unit may include a housing having a fixed bracket unit for supporting the first end of the elastic member; a movable bracket unit holding the second end of the elastic member and being movable forwards and rearwards; a guide groove longitudinally formed along the housing; a stop groove formed on the front end of the guide groove such that the stop groove is inclined rearwards; a hinge shaft provided on the locking lever and rotatably coupled to the movable bracket unit; and a stop protrusion provided on the locking lever such that it can slide along both the guide groove and the stop groove. Thus, when the drawer-type door is opened, the locking lever is locked to the stop protrusion, so that it is easy to close the drawer-type door. 
     Further, the elastic member may be a coil spring, in which the diameter of a part (small diameter part) near each end of the spring is less than that of a remaining part (large diameter part) of the end. Further, each of the fixed bracket unit and the movable bracket unit may include a small diameter groove, which seats therein the small diameter part of the spring, and a large diameter groove, which communicates with the small diameter groove and seats therein the large diameter part of the spring. Thus, the elastic member can be easily assembled with the fixed and movable bracket units and is prevented from being undesirably removed forwards or rearwards. 
     Further, the large diameter groove may be provided with upper stoppers for holding the upper portion of the large diameter part of the spring, thus preventing the large diameter part from being undesirably removed upwards from the large diameter groove. 
     Further, the sliding rail unit may be provided with a mounting bracket, which holds the fixed rail unit and is mounted to the inner casing of each of the drawer-type storage compartments. The mounting bracket may have a mounting plate, which is mounted to the housing. The mounting plate may include a locking protrusion, which is formed by cutting a cantilever strap from the mounting plate and by bending the cantilever strap into an L shape, while the housing may be provided with a locking piece that engages with the locking protrusion. Thus, the housing can be quickly and stably assembled with the mounting plate in the state in which the housing is temporarily assembled with the mounting plate, so that work efficiency during an assembling process is improved. 
     Further, the present invention may have a damper for reducing the rearward moving speed of the locking lever while gradually attenuating the restoring force of the elastic member. Thus, when the drawer-type doors are closed, the doors can be prevented from unexpected collision with the casing of the refrigerator units. 
     Further, the movable rail unit may be provided with a movable bracket, on which the protrusion is mounted. When the movable bracket is provided with a support plate for supporting the drawer-type door, it is possible to easily mount the protrusion to a conventional movable rail unit and to securely support the drawer-type doors. 
     Further, the door of each of the drawer-type storage compartments may have a double door structure including a tilting door unit, placed at a front location and tilted forwards around a hinge part provided on the lower end thereof, and a support door unit placed at a rear location and covered with the tilting door unit. Further, a tilting unit may be provided between the tilting door unit and the support door unit for executing a tilting motion, so that, when the upper portion of the door is pushed with a hand, part of the upper portion of the door is tilted forwards by the operation of the tilting unit, thus exposing a previously hidden handle grip outside. 
     The hinge part may include a hinge for coupling the tilting door unit and the support door unit to each other, and the tilting unit may include a one-touch latch, provided on the support door unit, and a locker provided on the tilting door unit that can engage with the latch. 
     The support door unit may be provided on the upper end thereof with a plurality of stoppers so as to prevent the upper end of the tilting door unit from being spaced excessively far apart from the upper end of the support door unit when the tilting door unit is tilted forwards relative to the support door unit. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
       The above and other objects, features and other advantages of the present invention will be more clearly understood from the following detailed description when taken in conjunction with the accompanying drawings, in which: 
         FIG. 1  is a perspective view of a food refrigerator according to an embodiment of the present invention; 
         FIG. 2  is a perspective view of the food refrigerator according to the embodiment of the present invention; 
         FIG. 3  is a perspective view of a front connection bracket according to an embodiment of the present invention; 
         FIG. 4  is an exploded rear perspective view of the food refrigerator according to the embodiment of the present invention; 
         FIG. 5  is an exploded front perspective view of the food refrigerator according to the embodiment of the present invention; 
         FIG. 6  is an enlarged view illustrating the state in which the front connection bracket is installed; 
         FIG. 7  is an enlarged view illustrating the state in which a rear connection bracket is installed; 
         FIG. 8  is an enlarged view illustrating the state in which a machine room bracket is installed; 
         FIG. 9  is a perspective view of a support; 
         FIG. 10  is a perspective view illustrating legs and connectors; 
         FIG. 11  is a perspective view illustrating a frame assembly and connectors; 
         FIG. 12  is an enlarged view illustrating the state in which a locking part is installed; 
         FIG. 13  is a perspective view of the food refrigerator; 
         FIG. 14  is a perspective view of a rack unit; 
         FIG. 15  is a bottom perspective view of the rack unit; 
         FIG. 16  is a perspective view of a guide unit; 
         FIG. 17  is a view illustrating the state in which the guide unit is installed; 
         FIG. 18  is a perspective view illustrating a rail device for a drawer-type storage compartment according to an embodiment of the present invention; 
         FIG. 19  is a front view of the rail device of  FIG. 18 , from which a housing is omitted; 
         FIG. 20  is a side view of the rail device of  FIG. 18  in a locked state; 
         FIG. 21  is a rear view illustrating the state of the housing of  FIG. 20 ; 
         FIG. 22  is a side view of  FIG. 18  in an unlocked state; 
         FIG. 23  is a rear view of the housing of  FIG. 22 ; 
         FIG. 24  is a perspective view illustrating both a movable bracket unit and an elastic member; 
         FIG. 25  is a sectional view taken along line B-B of  FIG. 24 ; 
         FIG. 26  is a perspective view illustrating a product having a drawer-type door according to the present invention when the drawer-type door is in a closed state; 
         FIG. 27  is a perspective view illustrating the product having the drawer-type door according to the present invention when the upper part of the drawer-type door is opened through a tilting motion and a handle grip of the door is exposed outside; 
         FIG. 28  is a perspective view illustrating the product having the drawer-type door according to the present invention when the drawer-type door is in a completely opened state; 
         FIG. 29  is an exploded perspective view illustrating the product having the drawer-type door according to the present invention when the drawer-type door is separated from the body of the product to show the state before the tilting motion; 
         FIG. 30  is an exploded perspective view illustrating the product having the drawer-type door according to the present invention when the drawer-type door is separated from the body of the product to show the state after the tilting motion; 
         FIG. 31  and  FIG. 32  are perspective views illustrating the construction of the drawer-type door according to the present invention; 
         FIG. 33  is a perspective view illustrating a tilting door unit of the drawer-type door according to the present invention; 
         FIG. 34  is a front view illustrating a support door unit of the drawer-type door according to the present invention; 
         FIG. 35  is a sectional view illustrating a state of engagement between the tilting door unit and the support door unit of the drawer-type door according to the present invention; 
         FIG. 36  is a perspective view illustrating an embodiment of both a latch and a locker used in the tilting unit of the drawer-type door according to the present invention; and 
         FIG. 37  is a perspective view illustrating a conventional kimchi refrigerator. 
     
    
    
     DETAILED DESCRIPTION OF THE INVENTION 
     Reference will now be made in greater detail to embodiments of the present invention, an example of which is illustrated in the accompanying drawings. 
       FIG. 1  is a perspective view of a food refrigerator according to an embodiment of the present invention.  FIG. 2  is a perspective view of the food refrigerator according to the embodiment of the present invention.  FIG. 3  is a perspective view of a front connection bracket according to an embodiment of the present invention.  FIG. 4  is an exploded rear perspective view of the food refrigerator according to the embodiment of the present invention.  FIG. 5  is an exploded front perspective view of the food refrigerator according to the embodiment of the present invention.  FIG. 5  is an enlarged view illustrating the state in which the front connection bracket is installed.  FIG. 7  is an enlarged view illustrating the state in which a rear connection bracket is installed.  FIG. 8  is an enlarged view illustrating the state in which a machine room bracket is installed.  FIG. 9  is a perspective view of a support.  FIG. 10  is a perspective view illustrating legs and connectors.  FIG. 11  is a perspective view illustrating a frame assembly and connectors.  FIG. 12  is an enlarged view illustrating the state in which a locking part is installed.  FIG. 13  is a perspective view of the food refrigerator.  FIG. 14  is a perspective view of a rack unit.  FIG. 15  is a bottom perspective view of the rack unit.  FIG. 16  is a perspective view of a guide unit.  FIG. 17  is a view illustrating the state in which the guide unit is installed. 
     As shown in  FIG. 1  through  FIG. 17 , the hybrid food refrigerator according to the present invention is provided with multipurpose compartments for storing therein kimchi, vegetables, fruit, wine, etc., and includes a plurality of separate refrigerator units and a plurality of brackets for coupling the refrigerator units to each other. 
     The refrigerator units include a first refrigerator unit  100   a , having a machine room  160 , and a second refrigerator unit  100   b  which is placed beside the first refrigerator unit  100   a  and forms a pair of refrigerator units in cooperation with the first refrigerator unit  100   a . As shown in  FIG. 2 , the first refrigerator unit  100   a  includes a left door-type storage compartment  100 , which is defined in the upper part of the first refrigerator unit  100   a  and is opened and closed by an openable door, and a left drawer-type storage compartment  500 , which is defined in the lower part of the unit  100   a  and is opened and closed by a drawer-type door. Further, the machine room  160 , having the form of an open recess, is defined in the rear surface of the left drawer-type storage compartment  500  of the first refrigerator unit  100   a , and holds machines, such as a compressor, therein. The second refrigerator unit  100   b  includes a right door-type storage compartment  190 , which is defined in the upper part of the second refrigerator unit  100   b  and is opened and closed by an openable door, and a right drawer-type storage compartment  600 , which is defined in the lower part of the unit  100   b  and is opened and closed by a drawer-type door. The left door-type storage compartment  100  is configured as an upward openable structure, which is opened or closed by a left upper door  150  rotatably mounted to the upper end of the compartment  100 . The left door-type storage compartment  100  may store therein kimchi, vegetables, fruit, etc. However, the left door-type storage compartment  100  is preferably used as a kimchi storage compartment for storing kimchi. In the left door-type storage compartment  100 , the inner casing for storing kimchi therein is surrounded by an evaporator and a heater (not shown). Further, a deodorizer  103  is installed at the center of the inner surface of the left upper door  150  and deodorizes the contents stored in the left door-type storage compartment  100 . A lamp  104  is installed near the deodorizer  103  and is turned on when the left upper door  150  is opened. Further, a control panel  102  is provided on the upper part of the front surface of the left door-type storage compartment  100  for controlling the operation of the left door-type storage compartment  100 . 
     Further, a wine storage compartment  170  is defined in the right door-type storage compartment  190 , and stores wine bottles B therein. Here, an evaporator and a heater (not shown) are installed in the rear part of the wine storage compartment  170 . The right door-type storage compartment  190  is provided with upper and front doors  110  and  140  on the upper and front parts thereof. Thus, a user may store wine bottles in the wine storage compartment  170  after opening the front door  110 . Further, an accessory storage compartment  180  is provided on the upper surface of the right door-type storage compartment  190 , which is a compartment for storing wine therein. The accessory storage compartment  180  is opened or closed by the right upper door  140 , and includes therein an accessory storage tray  105  for storing a variety of accessories, such as a corkscrew. Further, a control panel  101  is provided on the lower surface of the front part of the wine storage compartment  170  for controlling the operation of the wine storage compartment  170 . 
     Further, the left drawer-type storage compartment  500  stores therein kimchi, fruit, vegetables, etc., and is provided with a drawer-type door  130 . Thus, the drawer-type door  130  of the left drawer-type storage compartment  500  is sliding forwards and backwards in a manner similar to a typical drawer, thus being opened or closed. Here, an evaporator and a heater (not shown) are provided in the rear part of the left drawer-type storage compartment  500 . 
     The right drawer-type storage compartment  600  is used as a compartment for storing wine bottles therein in the same manner as that described for the wine storage compartment  170 . In the same manner as that described for the left drawer-type storage compartment  500 , the right drawer-type storage compartment  600  is provided with a drawer-type door  120 , which is sliding forwards and backwards so as to be opened or closed. Further, two wine racks  122  are installed in the right drawer-type storage compartment  600 , such that the racks  122  form a two-level structure and support a plurality of wine bottles thereon. The upper wine rack  122  is configured to be inclined at an angle of about 45 degrees relative to the lower wine rack  122 , so that a user can easily store wine bottles on the wine racks and easily take wine bottles out of the racks. In the above state, an evaporator and a heater (not shown) are installed in the rear part of the right drawer-type storage compartment  600 . 
     The hybrid food refrigerator, having the above-mentioned construction according to the present invention, is provided with a plurality of multipurpose compartments for storing kimchi, vegetables, fruit, wine, etc. therein, thus functioning as a food refrigerator and a wine cellar, so that it is not required for users to purchase separate wine cellars for storing wine, and thus the users save money. Further, the door-type storage compartments and the drawer-type storage compartments, for storing therein kimchi, vegetables, fruit, wine, etc. are optimally arranged in the food refrigerator, so that users can easily use the storage compartments. Therefore, the marketability of the product is increased. 
     The brackets include a front connection bracket  410 , which connects the front part of the first refrigerator unit  100   a  to the front part of the second refrigerator unit  100   b , a rear connection bracket  420 , which connects the rear part of the first refrigerator unit  100   a  to the rear part of the second refrigerator unit  100   b , and a machine room bracket  430 , which is installed in the machine room  160 . 
     The front connection bracket  410  is installed in the front part of the junction between the first refrigerator unit  100   a  and the second refrigerator unit  100   b . The front end of the front connection bracket  410  is connected to the first refrigerator unit  100   a , while the rear end of the bracket  410  is connected to the second refrigerator unit  100   b . The front connection bracket  410  includes a rear part  416 , which is connected to a side surface of the second refrigerator unit  100   b , a front part  414 , which is formed by bending the rear part  416  an amount corresponding to the thickness of a cover part  415  and has a first locking hole  418  so as to be connected to a side surface of the first refrigerator unit  100   a , and a bent part  411 , which is formed by bending the front part  414 , placed on the front surface of the first refrigerator unit  100   a . The rear part  416  and the cover part  415  have a total length corresponding to the height of the second refrigerator unit  100   b . The front part  414  is shorter than the rear part  416  such that the front part  414  reaches only a predetermined upper part of the left drawer-type storage compartment  500 . Thus, when the left drawer-type door  130  is opened or closed, the front part  414  does not interfere with the drawer-type door  130  and does not form any gap between it and the drawer-type door  130 . A second locking hole  419  is forwards and backwards formed in the rear part  416 , thus easily connecting the horizontally arranged refrigerator units to each other and defining a desired gap between the two refrigerator units. Further, the cover part  415  closes the gap defined between the first refrigerator unit  100   a  and the second refrigerator unit  100   b.    
     A left upper door  150  is provided on the upper part of the first refrigerator unit  100   a , thus closing the storage compartment of the first refrigerator unit  100   a . Meanwhile, a front door  110  is provided on the front part of the second refrigerator unit  100   b , thus closing the storage compartment of the second refrigerator unit  100   b . Here, the first refrigerator unit  100   a  is preferably configured to protrude from the second refrigerator unit  100   b  an amount corresponding to the thickness of the front door  110 , so that, when the front door  110  is closed, the front door  110  does not protrude from the front surface of the first refrigerator unit  100   a . In other words, the portion in the first refrigerator unit  100   a , to which the front connection bracket  410  is mounted, is offset from the portion in the second refrigerator unit  100   b , to which the front connection bracket  410  is mounted. 
     Thus, the rear part of the front connection bracket  410  is connected to the side surface of the second refrigerator unit  100   b  and, thereafter, the front part of the front connection bracket  410  is connected to a predetermined side portion of the first refrigerator unit  100   a , which faces the front door  110 . Thus, the first refrigerator unit  100   a  is securely connected to the second refrigerator unit  100   b.    
     The rear connection bracket  420  includes a vertical part and a mounting part, which is formed by bending the vertical part and has a locking hole for receiving a locking bolt. The rear connection bracket  420  is horizontally placed on the rear surfaces of both the first refrigerator unit  100   a  and the second refrigerator unit  100   b . The first end of the mounting part is bolted to the rear surface of the first refrigerator unit  100   a , while the second end of the mounting part is bolted to the rear surface of the second refrigerator unit  100   b . Further, to prevent the rear connection bracket  420  from being exposed outside, the rear connection bracket  420  is installed at a predetermined portion, to which a frame assembly of a support  300  is mounted. In other words, the rear connection bracket  420  is preferably installed at a location between the frame assembly and the refrigerator units. 
     The machine room bracket  430  has a specific polygonal shape, similar to a rectangular shape, corresponding to the cross-section of the machine room  160 , and is placed in the machine room  160  and oriented in the direction from the back to the front of the refrigerator unit  100   a . The machine room bracket  430  is provided with a pipe leading hole through which a pipe of the second refrigerator unit  100   b  passes to be connected to machines, such as a compressor, installed in the machine room  160 . The four side edges of the machine room bracket  430  are bent to form respective locking parts  431 . That is, the locking parts  431  are oriented in four directions. The rear locking part  431  is bent toward the second refrigerator unit  100   b  and is bolted to the rear surface of the second refrigerator unit  100   b . Meanwhile, the front, upper and lower locking parts  431  are locked to the inner surface of the first refrigerator unit  100   a , so that the machine room bracket  430  can be locked to the machine room  160 . 
     When the second refrigerator unit  100   b  is placed beside the opposite side surface of the first refrigerator unit  100   a , unlike the above-mentioned arrangement, the first refrigerator unit  100   a  and the second refrigerator unit  100   b  can be connected to each other using a locking part  431  placed near the second refrigerator unit  100   b.    
     Further, the shapes of the brackets may be variously changed in accordance with the arrangement of the refrigerator units. 
     As described above, the present invention includes a plurality of brackets for connecting the separately produced refrigerator units to each other, so that a user may easily change the arrangement of the refrigerator units as desired, and may easily assemble the refrigerator units into one product. Thus, the utility of the food refrigerator is increased. 
     The support  300  includes at least three legs  320  and a plurality of locking parts  340 , which are connected to the legs  320  at first ends thereof and to the side surfaces of the refrigerator units at second ends thereof. The present invention includes four legs  320  having a polygonal cross-section, similar to a triangular cross-section, with insert holes formed in end surfaces of each leg. The lower ends of the legs  320  are located at positions lower than the lower ends of the refrigerator units, thus spacing the refrigerator units above the ground surface. The locking parts  340 , each having a panel shape, are integrally formed along the side surfaces of the respective legs  320 . A plurality of longitudinal holes  342  is formed along the free edge of each locking part  340 , and receives respective locking bolts for locking the locking parts  340  to the refrigerator units. Due to the longitudinal holes  342 , the supports  300  can be easily mounted to electronic appliances having different sizes. Further, a plurality of longitudinal protrusions  341  may be longitudinally formed on the front surface of each of the locking parts  340 , thus increasing the strength of the locking parts  340 . The longitudinal protrusions  341 , formed on the front surface of the each locking part  340 , are not formed in the area having the longitudinal holes  342 . On the rear surface of each of the locking parts  340 , longitudinal protrusions are longitudinally formed at locations around the opposite sides of the longitudinal holes  342 . The locking parts  340  are installed on the front and rear parts of the outer surfaces of both the first refrigerator unit  100   a  and the second refrigerator unit  100   b . Further, a cover  350  is provided on the lower part of the outer surface of both the first refrigerator unit  100   a  and the second refrigerator unit  100   b , such that the cover  350  covers the locking part  340   s  so as to prevent the locking parts  340  from being exposed outside, and improve the appearance of the food refrigerator. 
     The cover  350  is provided with locking pieces on the upper and lower parts thereof, so that the cover  350  can be easily installed on the first refrigerator unit  100   a  and the second refrigerator unit  100   b  by inserting the locking pieces into the gaps of the locking parts  340 . The frame assembly is mounted to the upper ends of the legs  320 , thus surrounding the outer surfaces of both the first refrigerator unit  100   a  and the second refrigerator unit  100   b.    
     In the embodiment, the frame assembly is configured to surround all of the outer surfaces of both the first refrigerator unit  100   a  and the second refrigerator unit  100   b . However, it should be understood that the frame assembly may alternatively be configured to surround part of the outer surfaces of both the first refrigerator unit  100   a  and the second refrigerator unit  100   b.    
     Here, the frame assembly partitions the upper storage compartments of both the first refrigerator unit  100   a  and the second refrigerator unit  100   b  from the lower storage compartments. Both the first refrigerator unit  100   a  and the second refrigerator unit  100   b  may be provided with respective locking steps, which can be engaged with the frame assembly. Further, the frame assembly may be connected to the legs  320 , thus improving the appearance of the electronic appliance and stably supporting the electronic appliance. The frame assembly comprises a plurality of frames  310 . Each of the frames  310  is provided with an insert hole at each end thereof. One surface of each of the frames  310  is formed as an inclined surface The frames  310  are connected to each other using a plurality of connectors  330 . Two side ends of each of the connectors  330  are provided with respective side locking protrusions  331  and  332 , which are inserted into and locked to the insert holes of the frames  310 . A lower locking protrusion  333  is provided on the lower end of each connector  330  and is inserted into the insert hole of each of the legs  320 , so that the support  300  can be easily assembled. Each of the two side locking protrusions  331  and  332  and the one lower locking protrusion  333  is provided with a longitudinal slit. Further, each of the connectors  330  is provided with an angled vertical groove on a predetermined portion between the two side locking protrusions  331  and  332 . 
     As described above, the support  300  improves the appearance of the electronic appliance, and securely mounts the legs  320  to the electronic appliance. 
     Alternatively, the present invention may comprise a frame assembly, which includes a plurality of frames, placed around the outer surface or along the sides of the electronic appliance in a circumferential direction or in a vertical direction, a plurality of connectors  330  for connecting the frames to each other, and a plurality of locking parts  340 , first ends of which are connected to the frames and second ends of which are mounted to the electronic appliance. The frame assembly may function as a means for decorating the electronic appliance and improving the appearance of the electronic appliance. 
     The right door-type storage compartment  190  is provided therein with a rack unit  200  for supporting a plurality of wine bottles thereon. The rack unit  200  has a multi-layered structure, in which a plurality of rack units is stacked in the compartment  170 . The rack unit  200  includes a guide unit  220 , having a guide groove  225 , and a rack  210  having a sliding part for sliding along the guide groove  225 . The rack unit  200  may be made of wood. The rack  210  includes a front frame  211 , which extends in the longitudinal direction from the left to the right of the compartment  170 , and a plurality of latitudinal frames  213 , which extend backwards from the front frame  211  at intervals to form a lattice structure. Thus, the rack  210  stably supports a plurality of wine bottles, having cylindrical shapes, on the spaced latitudinal frames  213 . A stop wall  212  longitudinally extends at the rear end of the rack  210  such that the rear ends of the latitudinal frames  213  are connected to the stop wall  212 . The stop wall  212  prevents the wine bottles from dropping from the rear end of the rack  210 . The sliding part includes a connection part  215 , which is provided on the lower surface of the rack  210  and is connected to the lower part of the rack  210 , a bent engaging part  216 , which is formed on the lower part of the connection part  215  and is engaged with the guide groove  225 , and a bolted part  214 , which is provided on an upper part of the connection part  215  and is bent in a direction opposite the bent direction of the engaging part  216 . The sliding part is mounted to a latitudinal frame  213  of the rack  210 . 
     The guide unit  220  includes a mounting part  221  and a support part  224 , which protrudes from the lower end of the mounting part  221 . The mounting part  221  is provided with a plurality of locking holes  222  for locking the guide unit  220  to the inner casing of the right door-type storage compartment  190  using locking bolts. A plurality of countersinks  223  is formed in the outer surface of the mounting part  221  such that they communicate with respective locking holes  222 . Because the heads of the locking bolts are seated in the respective countersinks  223 , the rack  210  is prevented from interfering with the heads of the locking bolts when it moves along the guide units  220 . A guide groove  225  is formed in the lower portion of the rear part of the support part  224 . An insert hole  226  is formed in the rear end of the support part  224 , and communicates with the guide groove  225 . The support part  224  is provided with a stop end  227 , which engages with the engaging part  216  of the sliding part. The support part  224  is provided with an inclined surface  228 , so that the thickness of the support part  224  is increased in the rearward direction. Due to the above-mentioned construction of the rack unit  200 , two guide units  220  are bolted to the opposite inner side surfaces of the right door-type storage compartment  190 , such that the guide units  220  extend from the front to the back. Thereafter, the rack  210  is placed on the two guide units  220  and the sliding parts of the rack  210  are inserted into the insert holes  226  of the guide units  220 , so that the engagement of the rack  210  with the guide units  220  is easily accomplished. Further, when it is desired to use the right door-type storage compartment  190  for storing food instead of wine, the rack  210  is lifted up to remove the sliding parts from the insert holes  226 , so that the compartment  190  can be easily used for storing food instead of wine. In the present invention, the rack unit  200  has a simple construction to allow a user to easily take the bottles out of the rack unit  200 . Further, the rack  210  is configured such that it is stopped after it has been ejected a predetermined distance from the compartment  170 . Thus, when the rack  210  is ejected from the compartment  170 , the rack  210  is prevented from being undesirably removed from the compartment  170 . 
     Further, the present invention may be configured such that the guide unit  220  does not have a guide groove  225 , but has a locking hole and a stop end, which protrudes from the lower portion of the guide unit  220  at a location in front of the locking hole. In the above state, the sliding parts of the rack  210  are engaged with the locking holes of the guide units  220 , so that the rack  210  is brought into movable engagement with the guide units  220  so as to slide forwards and backwards along the guide units  220 . 
     In the following description, the technical term “forwards” means the direction in which a protrusion is unlocked and a drawer-type storage compartment can be opened, and the term “rearwards” means the direction in which the protrusion is locked and the drawer-type storage compartment is closed. 
       FIG. 18  is a perspective view illustrating a rail device of a drawer-type storage compartment according to an embodiment of the present invention. As shown in  FIG. 18 , the rail device  1000  according to the embodiment includes a sliding rail unit  1100  and a locking/unlocking unit  3000  for locking or unlocking the sliding rail unit  1100 . 
     Due to the locking/unlocking unit  3000 , it is not necessary to check whether or not the drawer-type storage compartments having the drawer-type doors  120  and  130  are completely closed, so that the present invention is convenient to users. 
     As shown in  FIG. 19 , the sliding rail unit  1100  includes a fixed rail unit  1110  and a movable rail unit  1130 , which is movable along the fixed rail unit  1110  using a plurality of rolling balls  1160 . The fixed rail unit  1110  may be directly mounted to the inner casing of the drawer-type storage compartment, or may be indirectly mounted to the inner casing of the compartment using a mounting bracket  1300 , which will be described in detail later herein. Further, when an intermediate movable rail unit  1150  is installed between the fixed rail unit  1110  and the movable rail unit  1130 , the drawer-type doors  120  and  130  can be opened or closed in multiple stages. Further, the rolling balls  1160  are seated and held in a ball retainer  1180 . 
     The mounting bracket  1300  is preferably mounted in the drawer-type storage compartment in the state in which the bracket  1300  supports the fixed rail unit  1110 . A mounting plate  1310 , having a housing  3600 , is formed on the lower portion of the mounting bracket  1300  through bending. Further, the mounting plate  1310  is provided with a locking protrusion  1350  through bending. Thus, both the sliding rail unit  1100  and the housing  3600  are mounted in the storage compartment using one mounting bracket  1300 , so that the housing  3600  can be mounted in the storage compartment without changing the structure of a conventional sliding rail unit. 
     Further, the movable rail unit  1130  is preferably provided with a movable bracket  1500 . The movable bracket  1500  has a protrusion  3100 , which will be described later herein. A support plate  1510  is formed on the lower end of the movable bracket  1500  through bending, and more securely supports the drawer-type door  120 ,  130 . Thus, the present invention is advantageous in that the two drawer-type doors  120  and  130  can be securely supported and, at the same time, the protrusion  3100  is mounted using the single movable bracket  1500 . 
     Further, as shown in  FIG. 20  through  FIG. 23 , the locking/unlocking unit  3000  includes a protrusion  3100 , which is operated in conjunction with the movable rail unit  1130 , a locking lever  3300  for locking the protrusion  3100 , and an unlocked state retaining unit  4000  for retaining the unlocked state of the protrusion  3100  by rotating the locking lever  3300 . The locking lever  3300  is provided with a locking slot  3310 , into or from which the protrusion  3100  is inserted or released. As shown in  FIG. 21 , the locking slot  3310  is configured as a notch, which is defined by a front step  3310   a  and a rear step  3310   b  having different heights. Here, the front step  3310   a  is lower than the rear step  3310   b . Thus, when the protrusion  3100  is removed from the locking slot  3310 , the protrusion  3100  can smoothly pass over the front step  3310   a . However, when the protrusion  3100  is inserted into the locking slot  3310 , the protrusion  3100  can be inserted into the slot  3310  by the rear step  3310   b  without interference from the front step  3310   a . In the present invention, the protrusion  3100  is preferably configured as a plate having a rectangular cross-section to correspond to the shape of the locking slot  3310 . 
     Further, an elastic member  3500  is preferably provided in the rail device  100  for elastically biasing the locking lever  3300  rearwards. Due to the elastic member  3500 , at the time when the protrusion  3100  is inserted into the locking slot  3310  of the locking lever  3300 , the drawer-type door  120 ,  130  can be automatically closed by the rearward restoring force of the elastic member. 
     As shown in  FIG. 21  and  FIG. 23 , the unlocked state retaining unit  4000  includes a guide groove  4300 , which is longitudinally formed along the housing  3600  provided on the mounting plate  1310 ; a stop groove  4500 , which is formed on the front end of the guide groove  4300  such that it is inclined rearwards and communicates with the guide groove  4300 ; a hinge shaft  4100  provided on the locking lever  3300 ; and a stop protrusion  4700 , which is provided on the locking lever  3300  and slides along both the guide groove  4300  and the stop groove  4500 . 
     At the rear end of the housing  3600 , a fixed bracket unit  3500   a  is preferably provided to support the first end of the elastic member  3500 . Further, the second end of the elastic member  3500  is supported by a movable bracket unit  3500   b , which is movable forwards and rearwards along the housing  3600 . The movable bracket unit  3500   b  is preferably provided with a hinge shaft bearing plate  3530   b  for rotatably supporting the hinge shaft  4100  of the locking lever  3300 . 
     The elastic member  3500  may use a coil spring. Further, the opposite ends of the elastic member  3500  may have small diameter parts. The opposite small-diameter parts of the elastic member  3500  are stopped by respective stop rings  3510   a  and  3510   b  of the fixed bracket unit  3500   a  and the movable bracket unit  3500   b , thus being prevented from undesirably becoming removed from the two bracket units  3500   a  and  3500   b . Of course, to prevent the elastic member  3500  from being undesirably removed upwards, the opposite ends of the elastic member  3500  are preferably secured to the fixed bracket unit  3500   a  and to the movable bracket unit  3500   b.    
     The construction of the coil spring, used as the elastic member  3500 , and the construction of the movable bracket unit  3500   b  are shown in  FIG. 24  and  FIG. 25 . The coil spring  3500  includes a small diameter part d, which is defined at a location near each end of the spring  3500 , and a large diameter part D, which is defined on a remaining part of the end of the spring  3500  at a location other than that of the small diameter part d. The movable bracket unit  3500   b  includes a stop groove, which comprises a small diameter groove d′ and a large diameter groove D′. The small diameter groove d′ seats the small diameter part d of the spring  3500  therein, while the large diameter groove D′, which is contiguous with the small diameter groove d′, seats the large diameter part D of the spring  3500  therein. Because the diameter of the stop groove is increased from the small diameter groove d′ to the large diameter groove D′, the junction between the two grooves d′ and D′ functions as a stop ring  3510   b  to reliably prevent the spring from being removed. Further, the large diameter groove D′ is provided with upper stoppers  3520   b  for holding the upper portion of the large diameter part D of the spring  3500 , thus preventing the large diameter part D from being undesirably removed upwards. Thus, when the large diameter part D of the spring  3500  is placed on and pushed down into the large diameter groove D′, the large diameter part D can be inserted into the large diameter groove D′ through elastic deformation thereof. However, when no force sufficient to remove the large diameter part D from the large diameter groove D′ after passing the large diameter part D over the upper stoppers  3520   b  is applied to the spring  3500 , it is almost impossible to remove the large diameter part D from the large diameter groove D′. Thus, the elastic member  3500  can be easily assembled with the movable bracket unit  3500   b . Further, the elastic member  3500  is not likely to be removed from the bracket unit  3500   b  upwards, forwards or rearwards. Of course, in the same manner as that described for the movable bracket unit  3500   b , the fixed bracket unit  3500   a  may be provided with a structure that prevents the elastic member  3500  from being undesirably removed therefrom upwards, forwards or rearwards. 
     Both the hinge shaft  4100  and the stop protrusion  4700  are movably seated in the guide groove  4300 . The hinge shaft  4100  is always placed in the guide groove  4300 , despite the locked or unlocked state of the protrusion  3100 . However, when the protrusion  3100  is unlocked, the stop protrusion  4700  is moved to the stop groove  4500 , and rotates the locking lever  3300 . 
     Further, the housing  3600  is preferably provided with a damper  5000 . Due to the damper  5000 , the drawer-type doors  120  and  130  can perform smooth closing motions while gradually attenuating the elastic force of the elastic member  3500 . Described in detail, when the drawer-type doors  120  and  130  are closed, the protrusion  3100  is inserted into the locking slot  3310 , and the stop protrusion  4700  is moved from the stop groove  4500  to the guide groove  4300 . In the above state, due to the restoring force of the tensioned elastic member  3500 , the protrusion  3100  may be quickly pulled rearwards and be impacted due to the quick motion. However, in the present invention, the damper  5000  efficiently absorbs shocks caused by the quick motion. 
     The damper  5000  includes a cylinder  5100  and a piston rod  5300 . The front end of the piston rod  5300  is locked to a rod stop hole  3510  of the movable bracket unit  3500   b . Thus, when the locking lever  3300  is pulled rearwards, the movable bracket unit  3500   b  is pushed rearwards, and the piston rod  5300  is moved in the same direction. In the above state, the moving speed of the piston rod  5300  is gradually reduced by a shock absorbing function performed by the cylinder  5100 . 
     The housing  3600 , which carries the elastic member  3500 , the damper  5000 , the movable bracket unit  3500   b  and the locking lever  3300  thereon, is mounted to the mounting plate  1310  using a plurality of locking elements  3800 . However, when the housing  3600  in the above state is mounted to the mounting plate  1310 , a worker is required to align the bolt holes of the housing  3600  to the bolt holes of the mounting plate  1310  while another worker places the housing  3600  relative to the mounting plate  1310 . To overcome this problem, the mounting plate  1310  is provided with the locking protrusion  1350  having an L-shaped appearance, while the housing  3600  is provided with a locking piece  3650 . 
     Described in detail, the locking protrusion  1350  includes a vertical part  1330 , which is formed by vertically bending a cantilever strap, and a horizontal part  1340 , which is defined by horizontally bending the end of the vertical part  1330 . Thus, when the locking piece  3650  of the housing  3600  is inserted into the locking protrusion  1350  until it comes into contact with the vertical part  1330 , the locking piece  3650  is fitted between the horizontal part  1340  and the mounting plate  1310 , so that the housing  3600  can be temporarily held on the mounting plate  1310 . The housing  3600  in the above state can be easily mounted to the mounting plate  1310  by one worker without help from another worker, and the alignment of the locking holes of the two elements can be easily executed, thus remarkably simplifying the assembly process. 
     The rail device  1000  of a drawer-type storage compartment having the above-mentioned construction according to the embodiment of the present invention is operated as follows. 
       FIG. 20  is a side view of  FIG. 18 , and illustrates the locked state of the rail device.  FIG. 21  is a rear view of the housing of  FIG. 20 . In  FIG. 20  and  FIG. 21 , the drawer-type doors are in locked states thereof. In the locked state, the protrusion  3100  is in a state of having been inserted into the locking slot  3310 , and the elastic member  3500  is not in a tensioned state, while the piston rod  5300  is in a tensioned state. 
     When the drawer-type door in the above state is pulled forwards, the protrusion  3100  is operated in conjunction with both the locking lever  3300  and the movable bracket unit  3500   b , and thus it is moved forwards. During the forward movement of the protrusion  3100 , the stop protrusion  4700  is moved into the stop groove  4500 , the locking lever  3300  is rotated, and the protrusion  3100  is unlocked from the locking slot  3310  (see  FIG. 22  and  FIG. 23 ). In the unlocked state, as shown in  FIG. 22  and  FIG. 23 , the elastic member  3500  is in a tensioned state, while the piston rod  5300  is in a released state. 
     When the drawer-type door is closed, the protrusion  3100  actuates the locking lever  3300 , so that the stop protrusion  4700  is moved from the stop groove  4500  to the guide groove  4300 . Further, the protrusion  3100  is inserted into the locking slot  3310 . In the above state, the tensioned elastic member  3500  elastically pulls the protrusion  3100  rearwards due to its restoring force, so that the drawer-type door can be automatically closed. Further, the released piston rod  5300  becomes shortened in the above state, thus being tensioned and executing a damping function to prevent the drawer-type door from quickly closing. 
     As shown in  FIG. 26 , the present invention also provides a structure for opening and closing the drawer-type doors  120  and  130  provided in a product, which includes the drawer-type storage compartments  500  and  600  having the drawer-type doors  120  and  130  to open or close the compartments. 
     In other words, the present invention is characterized in that each of the drawer-type doors  120  and  130  has a handle grip  26 , which is not exposed outside in a closed state of the door, but is selectively exposed outside so as to allow a user to obtain access to the handle grip  26  and easily handle the door. In the present invention, to open each of the drawer-type doors  120  and  130  of the drawer-type storage compartments, a user pushes the upper portion of the drawer-type door  120 ,  130  with one hand, thus opening part of the upper portion of the drawer-type door  120 ,  130  forwards through a tilting motion and exposing the handle grip  26  outside. Therefore, the user can easily open the drawer-type door  120 ,  130  while holding the handle grip  26  in the hand. 
     As shown in  FIG. 29  through  FIG. 35 , each of the drawer-type doors  120  and  130  according to the present invention has a double door structure. Described in detail, each of the drawer-type doors  120  and  130  includes a tilting door unit  21  and a support door unit  22 . The tilting door unit  21  is configured such that, when the upper portion of the drawer-type door  120 ,  130  is pushed with the hand, the upper portion of the tilting door unit  21  is tilted forwards around a hinge part H provided on the lower end of the tilting door unit  21 . The support door unit  22  is assembled with the tilting door unit  21 . 
     Here, as shown in  FIG. 31 ,  FIG. 32  and  FIG. 34 , the support door unit  22  has a flat plate structure having a predetermined thickness and a predetermined shape, and supports a drawer box  30 , which defines the drawer-type storage compartment. 
     The support door unit  22  is placed inside the tilting door unit  21  and is moved forwards and rearwards along with the drawer box  30  in the drawer-type storage compartment when the drawer-type door  120 ,  130  is opened or closed. 
     Further, as shown in  FIG. 31  through  FIG. 33 , the tilting door unit  21  is an element that has a structure which covers the front surface of the support door unit  22  and is tilted around a predetermined horizontal axis relative to the support door unit  22 . The tilting door unit  21  is rotatably coupled to the support door unit  22  at the lower ends thereof by hinges  23 , thus forming a hinge part H. The upper end surface of the tilting door unit  21  is partially depressed to form the handle grip  26 , so that a user can pull the tilting door unit  21  forwards while holding the handle grip  26  in one hand. 
     The hinge  23  is well-known to those skilled in the art, and may use a variety of conventional hinges, which can provide a mechanism capable of allowing the tilting door unit of the present invention to be tilted forwards relative to the support door unit. Further, the hinge  23  used in the present invention preferably has a damper function capable of absorbing shocks during a tilting motion of the tilting door unit  21 . 
     Further, a tilting unit T is provided both on a predetermined portion of the inner surface of the support door unit  22  and on an associated surface of the tilting door unit  21 , thus allowing the tilting door unit  21  to be tilted relative to the support door unit  22 . 
     Here, the tilting unit T includes a one-touch latch  25 , which is provided on the support door unit  22 , and a locker  24 , which is provided on the tilting door unit  21  and is engaged with the latch  25 . 
     The latch  25 , which is installed on the support door unit  22 , is seated in a latch seat  28 . When the tilting door unit  21  is assembled with the support door unit  22 , the latch  25  of the support door unit  22  corresponds to the locker  24 , which is provided on the tilting door unit  21 . 
     In other words, due to the cooperation of the hinge part H, which is formed by the hinges  23  provided between the lower ends of the tilting door unit  21  and the support door unit  22 , and the tilting unit T, which includes the latch  25  and the locker  24 , the tilting motion of the tilting door unit  21  relative to the support door unit  22  can be executed through a one-touch operation. 
     Particularly, one example of the structure of the latch  25  provided on the support door unit  22  is shown in  FIG. 36 . However, the present invention may use another latch structure as an alternative to the structure of the latch  25  shown in  FIG. 36  as long as the latch structure can provide a one-touch tilting structure. 
     Further, the support door unit  22  is provided on the upper end thereof with a plurality of stoppers  27  in order to stop the tilting motion of the tilting door unit  21  relative to the support door unit  22  at a predetermined tilted position Thus, when the tilting door unit  21  is tilted forwards relative to the support door unit  22 , the stoppers  27  prevent the upper end of the tilting door unit  21  from being excessively separated from the upper end of the support door unit  22 . 
     Hereinbelow, the opening/closing operation of the drawer-type door having the above-mentioned opening/closing structure according to the present invention will be described. 
     When it is desired to open the closed drawer-type doors  120  and  130  shown in  FIG. 26 , a user must open the drawer-type doors  120  and  130  while holding the handle grips  26  in the hands. 
     However, as shown in  FIG. 26 , in the closed state of the drawer-type doors  120  and  130  of the product according to the present invention, the handle grips  26  are not exposed outside, and thus the user cannot obtain access to the handle grips  26  and cannot open the drawer-type doors  120  and  130 . 
     Thus, to open the closed drawer-type doors  120  and  130  shown in  FIG. 26 , the drawer-type doors  120  and  130  of the present invention are configured such that when they are tilted forwards, the handle grips  26  are exposed outside. 
     Described in detail, to open the closed drawer-type door  120 ,  130 , the user slightly pushes the closed drawer-type door  120 ,  130  rearwards, so that the one-touch latch  25  of the support door unit  22  is released from the locker  24  of the tilting door unit  21  and a tilting motion is started, as shown in  FIG. 27 . Due to the tilting motion, the tilting door unit  21  is tilted forwards around the hinges  23  of the hinge part H, provided between the lower ends of the tilting door unit  21  and the support door unit  22 , so that the upper part of the tilting door unit  21  is slightly ejected forwards and is slightly opened. 
     Due to the tilting motion, the handle grip  26 , provided on the upper end surface of the tilting door unit  21 , is exposed outside, and the user obtains access to the handle grip  26 . Thus, the user can hold the handle grip  26  in one hand and pull the drawer-type door  120 ,  130  forwards until the drawer-type door  120 ,  130  is opened to a desired extent, as shown in  FIG. 28 . 
     As described above, in a product having the drawer-type doors  120  and  130  according to the present invention, the handle grip  26  of each of the drawer-type doors  120  and  130  is provided on the upper end surface of the tilting door unit  21 , capable of executing a tilting motion relative to the support door unit  22 , such that the handle grip  26  is not exposed outside in a normal state, but is selectively exposed outside through the tilting motion of the tilting door unit  21  relative to the support door unit  22 . Described in brief, the present invention provides a new structure for opening or closing the drawer-type doors  120  and  130 , which are configured such that the drawer-type doors  120  and  130  can be easily opened through the tilting motion. 
     Although an embodiment of the present invention has been described for illustrative purposes, those skilled in the art will appreciate that various modifications, additions and substitutions are possible, without departing from the scope and spirit of the invention as disclosed in the accompanying claims. 
     As apparent from the above description, the food refrigerator according to the present invention has the following advantages. 
     The present invention relates to a food refrigerator, which includes a bracket for coupling a plurality of refrigerator units to each other. Thus, the present invention allows a user to easily couple the refrigerator units to each other after rearranging the refrigerator units as desired, thus improving the utility of the food refrigerator. 
     The food refrigerator may include a first refrigerator unit and a second refrigerator unit. When the first refrigerator unit and the second refrigerator unit are arranged side by side, the bracket is placed between the first and second refrigerator units such that the bracket extends from the front to the back of the refrigerator units. In the above state, the front end of the bracket is mounted to the first refrigerator unit, while the rear end is mounted to the second refrigerator unit, so that the first and second refrigerator units, arranged horizontally, can be easily coupled to each other by the bracket. 
     The bracket is provided with a first locking hole in the front end thereof. Further, a second locking hole is longitudinally formed along the rear end of the bracket such that it extends in a direction from the front to the back of the refrigerator units. Thus, the bracket can couple two refrigerator units to each other such that the interval between the two refrigerator units is adjustable. 
     The refrigerator units may include a first refrigerator unit, having a machine room, and a second refrigerator unit, placed adjacent to the first refrigerator unit. A machine room bracket, provided with a locking part on an edge thereof through bending, is installed in the machine room. The locking part of the machine room bracket is connected to the second refrigerator unit, thus stably coupling the two refrigerator units to each other in addition to holding machines in the machine room. 
     The machine room bracket is provided with a plurality of locking parts such that the locking parts are oriented in several directions, so that the second refrigerator unit can be placed at a desired location relative to the first refrigerator unit and the first and second refrigerator units can be efficiently coupled to each other. 
     Further, the present invention provides a locking/unlocking unit for locking or unlocking a movable rail unit. Thanks to the locking/unlocking unit, it is not necessary for a user to check whether the drawer-type doors are closed or not. Further, the locking/unlocking unit prevents the drawer-type doors from being undesirably opened. 
     The locking/unlocking unit includes a protrusion, which is operated in conjunction with the movable rail unit; a locking lever having a locking slot for locking the protrusion when the protrusion moves rearwards; an elastic member for elastically biasing the locking lever rearwards; and an unlocked state retaining unit for retaining the unlocked state of the protrusion by rotating the locking lever when the protrusion moves forwards Thus, the protrusion, which is locked to the locking lever, can be elastically pulled rearwards by the elastic member, so that the present invention provides a function of automatically closing the drawer-type doors. 
     Further, the unlocked state retaining unit includes a housing having a fixed bracket unit for supporting the first end of the elastic member; a movable bracket unit holding the second end of the elastic member and being movable forwards and rearwards; a guide groove longitudinally formed along the housing; a stop groove formed on the front end of the guide groove such that the stop groove is inclined rearwards and communicates with the guide groove; a hinge shaft provided on the locking lever and rotatably coupled to the movable bracket unit; and a stop protrusion provided on the locking lever such that it slides along both the guide groove and the stop groove. Thus, when the drawer-type door is opened, the locking lever is locked to the stop protrusion. 
     Further, the elastic member is a coil spring, in which the diameter of a part (small diameter part) near each end of the spring is less than that of a remaining part (large diameter part) of the end. Further, each of the fixed bracket unit and the movable bracket unit includes a small diameter groove, which seats therein the small diameter part of the spring, and a large diameter groove, which communicates with the small diameter groove and seats therein the large diameter part of the spring. Thus, the elastic member can be easily assembled with the fixed and movable bracket units, and is prevented from being undesirably removed forwards or rearwards. 
     Further, the large diameter groove is provided with upper stoppers for holding the upper portion of the large diameter part of the spring, thus preventing the large diameter part from being undesirably removed upwards from the large diameter groove. 
     Further, the movable rail unit is provided with a mounting bracket, which holds the movable rail unit and is mounted to the inner casing of each of the drawer-type storage compartments. The mounting bracket has a mounting plate, which is mounted to the housing. The mounting plate includes a locking protrusion, which is formed by cutting a cantilever strap from the mounting plate and by bending the cantilever strap into an L shape, while the housing is provided with a locking piece that can be engaged with the locking protrusion. Thus, the housing can be quickly and stably assembled with the mounting plate in the state in which the housing is temporarily assembled with the mounting plate, so that work efficiency during an assembling process is improved. 
     Further, the present invention may have a damper for reducing the rearward moving speed of the locking lever while gradually attenuating the restoring force of the elastic member. Thus, when the drawer-type doors are closed, the doors can be prevented from unexpected collision with the casing of the refrigerator units. 
     Further, the movable rail unit is provided with a movable bracket, on which the protrusion is mounted. When the movable bracket is provided with a support plate for supporting the drawer-type door, it is possible to easily mount the protrusion to a conventional movable rail unit and to securely support the drawer-type doors. 
     Further, to open the door of a drawer-type storage compartment in a product having the storage compartment, the upper portion of the door is pushed rearwards with one hand so as to open a part of the upper portion of the door forwards through a tilting motion. Thus, a handle grip, which is provided on the upper end surface of the door and is not exposed outside in the closed state of the door, is exposed outside, and allows a user to open the door while holding the handle grip with a hand. Thanks to the hidden handle grip, a variety of products having a good appearance can be provided.