Patent Publication Number: US-2023133129-A1

Title: Refrigerator for vehicle and vehicle

Description:
CROSS-REFERENCE TO RELATED PATENT APPLICATIONS 
     This application is a continuation of U.S. patent application Ser. No. 16/482,393, filed Jul. 31, 2019, which is a U.S. National Stage Application under 35 U.S.C. § 371 of PCT Application No. PCT/KR2018/001387, filed Feb. 1, 2018, which claims priority to Korean Patent Application No. 10-2017-0014982, filed Feb. 2, 2017, whose entire disclosures are hereby incorporated by reference. 
    
    
     1. FIELD 
     The present disclosure relates to a refrigerator for a vehicle and a vehicle. 
     2. BACKGROUND 
     Refrigerators are apparatuses for storing products such as foods received in the refrigerator at a low temperature including sub-zero temperatures. As a result of this action, there is an advantage that a user&#39;s access or intake with respect to the products may be improved, or a storage period of the products may be lengthened. 
     Refrigerators are classified into indoor refrigerators using a commercial power source or outdoor refrigerators using a portable power source. In addition, in recent years, a refrigerator for a vehicle, which is used after it is fixedly mounted on the vehicle, is increasing in supply. The refrigerator for the vehicle is further increasing in demand due to an increase in supply of vehicles and an increase in premium-class vehicles. 
     A conventional configuration of the refrigerator for the vehicle will be described. 
     First, there is an example in which heat in the refrigerator is forcibly discharged to an outside of the refrigerator by using a thermoelement. However, there is a limitation in that a cooling rate is slow due to low thermal efficiency of the thermoelement, which may deteriorate user&#39;s satisfaction. 
     For another example, there is an example in which a refrigerant or cold air is drawn from an air conditioning system installed for air-conditioning an entire interior of the vehicle and used as a cooling source for the refrigerator for the vehicle. 
     In this example, there is a disadvantage that a separate flow path of air or refrigerant is required to draw the air or refrigerator from the air conditioning system of the vehicle. Also, there is a limitation that low-temperature energy is lost during the movement of the air or refrigerant through the flow path. Also, there is a limitation that a position at which the refrigerator for the vehicle is installed is limited to a position that is adjacent to the air conditioning system of the vehicle due to the above-described limitations. 
     For another example, there is an example in which a refrigeration cycle using a refrigerant is applied. 
     In this example, since a part constituting the refrigeration cycle is large in size, most of the parts are mounted on a trunk, and only a door of the refrigerator is opened to the inside of the vehicle. In this case, there is a limitation that a position for installing the refrigerator for the vehicle is limited. Also, there is a limitation that the trunk is significantly reduced in volume to reduce an amount of cargo that is capable of being loaded in the trunk. 
     DISCLOSURE 
     Technical Problem 
     Embodiments also provide a vehicle refrigerator to which a driver is directly accessible while using refrigeration cycle, and a vehicle. 
     Embodiments also provide a vehicle refrigerator that is capable of increasing a capacity of the refrigerator, and a vehicle. 
     Embodiments also provide a vehicle refrigerator that is capable of solving a limitation in which products accommodated in the refrigerator is slowly cooled, and a vehicle. 
     Embodiments provide a vehicle refrigerator that is capable of improving energy efficiency, and a vehicle. 
     Embodiments also provide a vehicle refrigerator that is capable of blocking an access of foreign substances, and a vehicle. 
     Technical Solution 
     In one embodiment, a refrigerator for a vehicle includes a machine room disposed at a side of a cavity or a compartment, a compressor accommodated in the machine room to compress a refrigerant, a condensation module or assembly accommodated in the machine room to condense the refrigerant, an evaporation module or assembly accommodated in the cavity to evaporate the refrigerant and thereby to cool the cavity, and a hinge part adiabatic member or an adiabatic hinge support covering an upper end of the cavity and an upper end of the evaporation module and supporting a hinge shaft or hinge pins of the door. According to the embodiments, the vehicle refrigerator in which high-efficiency refrigeration cycle is compact may be provided. 
     The refrigerator may further include a conduit connecting the evaporation module to an expansion valve to pass over a wall of the cavity to realize high adiabatic performance without adiabatic loss of the cavity. The refrigerator may further include at least two refrigerant conduits provided in the conduit and heat-exchanged, a regeneration adiabatic member surrounding the at least two refrigerant conduits, and a regeneration adiabatic member seating part or a seating insert disposed on the hinge part adiabatic member to surround the regeneration adiabatic member, thereby further reducing the adiabatic loss. 
     The hinge part adiabatic member may extend up to the outside over the opened surface of the cavity as well as a corner of one side of the cavity to improve alignment with other parts, prevent foreign substances from being introduced, and further reduce the adiabatic loss. 
     The hinge part adiabatic member may include an inner support and an outer support, which protrude upward both sides, which are spaced apart from each other, of the hinge part adiabatic member to support the hinge shaft of the door and may support the door. 
     The refrigerator may further include a connection bar connecting the inner support to the outer support to thermally insulate an entire corner of the one side of the cavity. 
     The evaporation module may come into contact with a bottom surface of the connection bar to improve the alignment between the parts and further reduce the adiabatic loss. 
     The cavity may be provided as a vacuum adiabatic body that is opened upward to improve the adiabatic performance by more utilizing the narrow inner space of the vehicle. 
     The hinge part adiabatic member may further include a fitting part or a seal sealed to correspond to an inner surface of the cavity to completely realize sealing of the cavity, thereby improving the adiabatic performance. 
     The refrigerator may further include a console cover or a cover covering an upper edge of a main body together with the hinge part adiabatic member to shield an opened surface of the refrigerator disposed in the console space of the vehicle. 
     At least a portion of the hinge part adiabatic member may be inserted into the console cover, and a bearing part or a bearing supporting the hinge shaft of the door may be disposed on the console cover to provide a door hinge structure to which two parts are applied together, thereby more stably performing the hinge action of the door. 
     In another embodiment, a vehicle includes a console having a console space therein, a console cover covering an upper portion of the console, a suction port disposed on one side of first and second (e.g., left and right) sides of the console, an exhaust port or an exhaust and getter port disposed on the other side of the left and right sides of the console, a refrigerator bottom frame disposed on a lower portion of an inner space of the console, a cavity provided at a side on the refrigerator bottom frame, which faces the suction port, to accommodate a product, and a machine room provided at a side on the refrigerator bottom frame, which faces the exhaust port so that an air conditioning system is provided in the narrow inner space of the vehicle. 
     The air conditioning system may include a compressor disposed at a front side of the machine room to compress a refrigerant, a condensation module disposed at a rear side to condense the refrigerant, and an evaporation module disposed in the cavity to evaporate the refrigerant so that a refrigeration system is realized. 
     A hinge part adiabatic member interposed between the evaporation module and the console cover to support the hinge of the door may be provided to perform the heat insulation with respect to one corner of the cavity and support the hinge of the door. 
     The vehicle may further include a bearing part disposed on the console cover and a support disposed on the hinge part adiabatic member and inserted into the bearing part to more stably perform the operations of supporting the door and opening the door. 
     The bearing part and the support may be disposed one by one at inner and outer sides, respectively to open the door in front and rear direction of the vehicle. 
     A fitting groove reinforcing and supporting the hinge shaft of the door may be defined in the support to more stably perform the opening of the door. 
     The hinge part adiabatic member may further extend to an outer space of the cavity to more improve the adiabatic performance. 
     In further another embodiment, a refrigerator for a vehicle includes a cavity having an opened upper side to accommodate a product, a door opening/closing a top surface or top opening of the cavity, a machine room spaced apart from the cavity, a hinge part adiabatic member covering at least a portion of an upper end of the cavity and supporting the door, and a console cover disposed above the cavity to cover an upper edge of the cavity and the hinge part adiabatic member to more stably support the door. 
     The vehicle may further include a bearing part disposed on the console cover of the door to support the hinge shaft of the door and a support disposed on the hinge part adiabatic member and inserted into the bearing part to reinforce supporting force of the door to draw the support action through interlocking between the two members, thereby stably supporting the door. 
     The evaporation module may have a top surface coming into contact with a bottom surface of the hinge part adiabatic member to improve reliability with respect to sealing between the adjacent parts. 
     The hinge part adiabatic member may further protrude to the outside of the cavity to perform the heat insulation between the external parts of the cavity so that the refrigerator is more compact. 
     Advantageous Effects 
     The adiabatic performance with respect to the inside of the cavity of the vehicle refrigerator using the vacuum adiabatic body according to an embodiment may be improved. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
         FIG.  1    is a perspective view of a vehicle according to an embodiment; 
         FIG.  2    is an enlarged perspective view illustrating a console of the vehicle; 
         FIG.  3    is a schematic perspective view illustrating the inside of a vehicle refrigerator; 
         FIG.  4    is a view for explaining an air flow outside a machine room of the vehicle refrigerator; 
         FIG.  5    is a perspective view of a hinge part adiabatic member; 
         FIGS.  6  to  9    are plan, front, bottom, and left views of the hinge part adiabatic member; 
         FIG.  10    is an exploded perspective view of an evaporation module; 
         FIG.  11    is a view illustrating an internal configuration of a vacuum adiabatic body according to various embodiments; 
         FIG.  12    is a view of a conductive resistance sheet and a peripheral portion of the conductive resistance sheet; 
         FIG.  13    is a graph illustrating results obtained by observing a time and a pressure in a process of exhausting the inside of the vacuum adiabatic body when a supporting unit is used; and 
         FIG.  14    is a graph illustrating results obtained by comparing a vacuum pressure with gas conductivity. 
     
    
    
     DETAILED DESCRIPTION 
     In the following description according to embodiments with reference to the drawings, the same reference numerals are given to different drawings in the case of the same constituents. 
     Also, in the description of each drawing, the description will be made with reference to the direction in which the vehicle is viewed from the front of the vehicle, rather than the front viewed by the driver based on the traveling direction of the vehicle. For example, the driver is on the right, and the assistant driver or passenger is on the left. 
       FIG.  1    is a perspective view of a vehicle according to an embodiment. 
     Referring to  FIG.  1   , a seat  2  on which a user is seated is provided in a vehicle  1 . The seat  2  may be provided in a pair to be horizontally spaced apart from each other. A console is provided between the seats  2 , and a driver places items that are necessary for driving or components that are necessary for manipulating the vehicle in the console. Front seats on which the driver and the assistant driver or passenger are seated may be described as an example of the seats  2 . 
     It should be understood that the vehicle includes various components, which are necessary for driving the vehicle, such as a moving device such as a wheel, a driving device such as an engine, and a steering device such as a steering wheel. 
     The refrigerator for the vehicle according to an embodiment may be preferably placed in the console. However, an embodiment of the present disclosure is not limited thereto. For example, the vehicle refrigerator may be installed in various spaces. For example, the vehicle refrigerator may be installed in a space between rear seats, a door, a glove box, and a center fascia. This is one of factors that the vehicle refrigerator according to an embodiment is capable of being installed only when power is supplied, and a minimum space is secured. However, it is a great advantage of the embodiment in that it may be installed in the console between the seats, which is limited in space due to limitations in vehicle design. 
       FIG.  2    is an enlarged perspective view illustrating the console of the vehicle. 
     Referring to  FIG.  2   , a console  3  may be provided as a separate part that is made of a material such as a resin. A steel frame  98  may be further provided below the console  3  to maintain strength of the vehicle, and a sensor part  99  such as a sensor may be provided in a spacing part between the console  3  and the steel frame  98 . The sensor part  99  may be a part that is necessary for accurately sensing an external signal and measuring a signal at a position of the driver. For example, an airbag sensor that directly impacts the life of the driver may be mounted. 
     The console  3  may have a console space  4  therein, and the console space  4  may be covered by a console cover or a cover  300 . The console cover  300  may be fixed to the console  3  in a fixed type. Thus, it is difficult for external foreign substances to be introduced into the console through the console cover  300 . A vehicle refrigerator  7  is seated in the console space  4 . 
     A suction port  5  may be provided in a first or right surface of the console  3  to introduce air within the vehicle into the console space  4 . The suction port  5  may face the driver. An exhaust port  6  may be provided in a second or left surface of the console  3  to exhaust warmed air while the vehicle refrigerator operates from the inside of the console space  4 . The exhaust port  6  may face the assistant driver or passenger. A grill may be provided in each of the suction port  5  and the exhaust port  6  to prevent a user&#39;s hand from being inserted and thereby to provide safety, prevent a falling object from being introduced, and allow air to be exhausted to flow downward so as not to be directed to the person. 
       FIG.  3    is a schematic perspective view illustrating the inside of the vehicle refrigerator. 
     Referring to  FIG.  3   , the vehicle refrigerator  7  includes a refrigerator bottom frame or a refrigerator base  8  supporting parts, a machine room  200  provided in a left side of the refrigerator bottom frame  8 , and a cavity or compartment  100  provided in a right side of the refrigerator bottom frame  8 . The machine room  200  may be covered by a machine room cover  700 , and an upper side of the cavity  100  may be covered by the console cover  300  and a door  800 . 
     The machine room cover  700  may not only guide a passage of the cooling air, but also prevent foreign substances from being introduced into the machine room  200 . 
     A controller  900  may be disposed on the machine room cover  700  to control an overall operation of the vehicle refrigerator  7 . Since the controller  900  is installed at the above-described position, the vehicle refrigerator  7  may operate without problems in a proper temperature range in a narrow space inside the console space  4 . That is to say, the controller  900  may be cooled by air flowing through a gap between the machine room cover  700  and the console cover  300  and separated from an inner space of the machine room  200  by the machine room cover  700 . Thus, the controller  900  may not be affected by heat within the machine room  200 . 
     The console cover  300  may not only cover an opened upper portion or top of the console space  4 , but also cover an upper end edge of the cavity  100 . A door  800  may be further installed on the console cover  300  to allow the user to cover an opening through which products are accessible to the cavity  100 . The door  800  may be opened by using rear portions of the console cover  300  and the cavity  100  as hinge points. Here, the opening of the console cover  300 , the door  800 , and the cavity  100  may be performed by conveniently manipulating the door  800  by the user because the console cover  300 , the door  800 , and the cavity  100  are horizontally provided when viewed from the user and also disposed at a rear side of the console. 
     A condensation module or assembly  500 , a dryer  630 , and a compressor  201  may be successively installed on a base  210  in the machine room  200  in a flow direction of the cooling air. A refrigerant conduit  600  for allowing the refrigerant to smoothly flow is provided in the machine room  200 . A portion of the refrigerant conduit  600  may extend to the inside of the cavity  100  to supply the refrigerant. The refrigerant conduit  600  may extend to the outside of the cavity  100  through the upper opening through which the products are accessible to the cavity  100 . The condensation module  500  may include a condensation fan  501  and a condenser. 
     The cavity  100  has an opened top surface or a top opening and five surfaces that are covered by a vacuum adiabatic body  101 . 
     The vacuum adiabatic body  101  may include a first plate member  10  providing a boundary of a low-temperature inner space of the cavity  100 , a second plate member  20  providing a boundary of a high-temperature outer space, and a conductive resistance sheet  60  blocking heat transfer between the plate members  10  and  20 . Since the vacuum adiabatic body  101  has a thin adiabatic thickness to maximally obtain adiabatic efficiency, a large capacity of the cavity  100  may be realized. 
     An exhaust and getter port or an exhaust port  40  for exhaust of the inner space of the vacuum adiabatic body  101  and for installing a getter that maintains the vacuum state may be provided on one surface. The exhaust and getter port  40  may provide an exhaust and getter together to better contribute to miniaturization of the vehicle refrigerator  7 . 
     An evaporation module or assembly  400  may be installed in the cavity  100 . The evaporation module  400  may forcibly blow evaporation heat of the refrigerant, which is introduced into the cavity  100  through the refrigerant conduit  600 , and forcibly blow cold air, into the cavity  100 . The evaporation module may be provided at a rear side within the cavity  100 . 
       FIG.  4    is a view for explaining an air flow outside a machine room of the vehicle refrigerator. 
     Referring to  FIG.  4   , air introduced into the suction port  5  moves to a left side of the vehicle refrigerator through a space between the vacuum adiabatic body  101  defining a front wall of the cavity  100  and a front surface of the console space  4 . Since a heating source is not provided at a right side of the vehicle refrigerator, the suction air may be maintained at its original temperature. 
     The air moving to the left side of the vehicle refrigerator may be changed in direction to a rear side to move along a top surface of the machine room cover  700  outside the machine room  200 . 
     To smoothly guide the air flow, the machine room cover  700  may have a height that gradually increases backward from a front surface  710 . Also, to provide a region in which the controller  900  is disposed, and prevent the parts within the machine room  200  from interfering in position with each other, a stepped part may be disposed on a top surface of the machine room cover  700 . 
     In detail, a first step portion  732 , a second stepped part  733 , and a third stepped part  735  may be successively provided backward from the front surface. A controller placing part  734  having the same height as the third stepped part is disposed on the second stepped part  733 . Due to this structure, the controller  900  may be disposed in parallel to the third stepped part  735  and the controller placing part  734 . 
     The air moving along the top surface of the machine room cover  700  may cool the controller  900 . When the controller is cooled, the air may be slightly heated. 
     The air moving up to a rear side of the machine room cover  700  flows downward. An opened large cover suction hole is defined in the rear surface of the machine room cover  700 . For this, a predetermined space may be provided between a rear surface of the machine room cover  700  and a rear surface of the console space  4 . 
     The evaporation module  400  is disposed at a rear side of the cavity  100 , and the refrigerant conduit  600  supplying the refrigerant into the evaporation module  400  passes over the cavity  100 . In addition, a hinge of the door  800  and the evaporation module  400  are placed on the rear side of the cavity so that a rear portion of the cavity is vulnerable to heat insulation. 
     To solve this limitation, a hinge part adiabatic member or an adiabatic hinge support  470  is provided. The hinge part adiabatic member  470  may also be referred to as an adiabatic door support. The hinge part adiabatic member  470  performs an adiabatic action on an upper portion of the evaporation module  400 , between the evaporation module  400  and a rear wall of the cavity  100 , and a contact part between a regeneration adiabatic member  651  inserted into the cavity and an inner space of the cavity. 
     As described above, the console cover  300  is further provided above the hinge part adiabatic member  470  to lead to complete heat insulation. 
       FIG.  5    is a perspective view of the hinge part adiabatic member. 
     Referring to  FIG.  5   , the hinge part adiabatic member  470  includes an inner support  473  covering the regeneration adiabatic member  651  and inserted into an inner bearing part or an inner bearing  373 , an outer support  472  inserted into an outer bearing part or an outer bearing  372 , and a connection bar  471  connecting the supports  472  and  473  to each other and thermally insulating an upper portion of the evaporation module  400 . 
     Since the supports  472  and  473  are inserted into the bearing parts  372  and  373 , the hinge part adiabatic member  470  and the console cover  300  may be integrated with each other. Also, since the console cover  300  is installed, the hinge part adiabatic member  470  may be fixed to a predetermined position with respect to the cavity  100 . That is to say, the supports  472  and  473  may allow the parts in a rear space within the cavity  100  to come into close contact with each other while supporting the evaporation module  400 . Thus, the parts may come into strong contact with each other to prevent the cold air from leaking. Also, a hinge action of the door  800  may be more secured. 
     Each of the supports  472  and  473  may have a structure that gradually decreases in cross-sectional area toward an end or side thereof so that the supports  472  and  473  are inserted into the bearing parts  372  and  373 . 
     The inner support  473  may have a thickness greater than that of the outer support  472 . This is because the inner support  473  is a portion surrounding the regeneration adiabatic member  651  to cause a heat loss. 
     A regeneration adiabatic member seating part or a seating insert  476  having a shape accurately matches an outer appearance or shape of the regeneration adiabatic member  651  is provided on an inner surface of the inner support  473 . Thus, the inner support  473  may be curved in a smooth arc shape. A lower end surface of the regeneration adiabatic member seating part  476  may be placed on an upper end of the vacuum adiabatic body  101 . Thus, a vertical position relationship between the hinge part adiabatic member  470  and the cavity  100  may be clear, and a gap between the parts may not occur. 
     An inner fitting part or an inner seal  477  further extending downward from a rear portion of the regeneration adiabatic member seating part  476  may be further provided. The inner fitting part  477  may correspond to an inner surface of the vacuum adiabatic body  101 , and thus, the position relationship in a front and rear direction of the hinge part adiabatic member  470  may be more clearly fixed. An outer fitting part or an outer seal  478  corresponding to the inner fitting part  477  may also be provided on the outer support  472 . 
     A part on which the evaporation module  400  is seated to be fitted is provided on the connection bar  471 . Particularly, a cover seating part  488 , a fan housing seating part  474 , and a second compartment seating part  475  may be provided. The position relationship in a left and right direction with respect to the cavity of the hinge part adiabatic member  470  may be cleared by the cover seating part  488 . Each of the fan housing seating part  474  and the second compartment seating part  475  is provided corresponding to an upper shape of the evaporation module  400  to prevent the cold air from leaking through the contact part between the evaporation module  400  and the hinge part adiabatic member  470 . 
     According to the above-described constituents, leakage of external air through a boundary with the contact parts or various constituents coming into contact with the hinge part adiabatic member  470  may be prevented to enhance the adiabatic performance with respect to the portion that is vulnerable to heat leakage. 
       FIGS.  6  to  9    are plan, front, bottom, and left views of the hinge part adiabatic member. 
     Referring to  FIGS.  6  to  9   , the configuration of the hinge part adiabatic member  470  and an action of each constituent may be more clearly understood. 
     An outer fitting groove  480  and an inner fitting groove  479  are defined in inner portions of the supports  472  and  473 , respectively. The fitting groove  479  may be configured to accommodate a support portion of the console cover  300  in which each of the bearing parts  372  and  373  is thicker to accommodate the hinge shaft or hinge pings of the door  800 . 
     The second compartment seating part  475  may have a recessed structure and provide a path through which a structure such as a wire that is led out of the evaporation module  400  passes to the outside. 
     A skirt  481  further extends downward to an inside of the regeneration adiabatic member seating part  476 . The skirt  481  may be a portion that further extends downward to help the perforation of the regeneration adiabatic member  651  that enters into the cavity  100 . 
       FIG.  10    is an exploded perspective view of the evaporation module. 
     Referring to  FIG.  10   , the evaporation module  400  includes a rear cover  430  provided at a rear side to accommodate the parts and a front cover  450  provided at a front side of the rear cover  430  to face the cavity  100 . A space may be provided in the evaporation module  400  by the front cover  450  and the rear cover  430  to accommodate the parts in the space. 
     In the space defined by the front cover  450  and the rear cover  430 , an evaporator  410  is disposed at a lower side, and an evaporation fan  420  is disposed at an upper side. A centrifugal fan that is capable of being mounted in a narrow space may be used as the evaporation fan  420 . More particularly, a sirocco fan including a fan inlet  422  having a large area to suction air and a fan outlet  421  blowing the air at a high rate in a predetermined discharge direction in a narrow space may be used as the evaporation fan  420 . 
     The air passing through the evaporator  410  is suctioned into the fan inlet  422 , and the air discharged from the fan outlet  421  is discharged to the cavity  100 . For this, a predetermined space may be provided between the evaporation fan  420  and the rear cover  430 . 
     A plurality of compartments may be provided in the rear cover  430  to accommodate the parts. Particularly, the evaporator  410  and the evaporation fan  420  are disposed in a first compartment  431  to guide a flow of cool air. A lamp or a light source  440  may be disposed in a second compartment to brighten the inside of the cavity  100  so that the user looks at or views the inside of the cavity  100 . A temperature sensor  441  is disposed in a fourth compartment  434  to measure an inner temperature of the cavity  100  and thereby to control a temperature of the vehicle refrigerator  7 . 
     When the temperature sensor  441  disposed in the fourth compartment  434  measures the inner temperature of the cavity  100 , the air flow in the cavity  100  may not have a direct influence on the temperature sensor  441 . That is, the cold air of the evaporator  410  may not have a direct influence on a third compartment  433 . 
     Although the third compartment  433  is removed in some cases, the third compartment  433  may be provided to prevent an error of the inner temperature of the cavity  100  from occurring by conductive heat. 
     The fourth compartment  434  and the temperature sensor  441  are disposed at a right upper end of the evaporation module  400 , which is farthest from the evaporator  410 . This is to prevent the cold air from having an influence on the evaporator  410 . That is to say, to prevent the cold air of the evaporator from having a direct influence on the fourth compartment  434  through the conduction, the fourth compartment  434  and the temperature sensor  441  may be isolated from the first compartment  431  by other compartments  432  and  433 . 
     An inner structure of the first compartment  431  will be described in detail. A fan housing  435  on which the evaporation fan  420  is disposed is provided at an upper side, and an evaporator placing part  437  on which the evaporator  410  is placed is provided at a lower side. 
     A conduit passage  436  is provided in a left side of the fan housing  435 . The conduit passage  436  may be a portion through which a refrigerant conduit  600  passing over the vacuum adiabatic body  101  is guided into the evaporation module  400  and be provided in a left corner portion of the evaporation module  400 . The refrigerant conduit  600  may include two conduits that are surrounded by the refrigerant adiabatic member  651  so that the two conduits through which the evaporation module  400  is inserted and withdrawn are heat-exchanged with each other. Thus, the conduit passage  436  may have a predetermined volume. The conduit passage  436  may vertically extend from a left side of the evaporation module  400  to improve space density inside the evaporation module  400 . 
     As described above, the evaporator  410  and the evaporation fan  420  are provided in the rear cover  430  to perform the cooling of air within the cavity and the circulation of air within the cavity. 
     The front cover  450  has an approximately rectangular shape like the rear cover  430 . A cold air inflow hole  451  guiding the air inflow to the lower side of the evaporator  410  and a cold air discharge hole  452  aligned with the fan outlet  421  is defined in a lower portion of the front cover  450 . The cold air discharge hole  452  may have a shape of which an inner surface is smoothly bent to discharge air, which is discharged downward from the evaporation fan  420 , forward. 
     The front cover  450  aligned with the second compartment  432  may be opened, or a window  453  may be provided on the portion of the front cover  450  so that light of the lamp  440  is irradiated into the cavity  100 . 
     An air vent hole  454  is defined in the front cover  450  aligned with the fourth compartment  434 . The air discharged from the cold air discharge hole  452  circulates inside the cavity  100  and then is introduced into the air vent hole  454 . Thus, the inner temperature of the cavity  100  may be more accurately detected. For example, the inner temperature of the cavity  100  may be erroneously measured by a large amount of cold air discharged from the cold air discharge hole  452 . 
       FIG.  11    is a view illustrating an internal configuration of a vacuum adiabatic body according to various embodiments. 
     First, referring to  FIG.  11   a   , a vacuum space part  50  is provided in a third space having a different pressure from first and second spaces, preferably, a vacuum state, thereby reducing adiabatic loss. The third space may be provided at a temperature between the temperature of the first space and the temperature of the second space. 
     The third space is provided as a space in the vacuum state. Thus, the first and second plate members  10  and  20  receive a force contracting in a direction in which they approach each other due to a force corresponding to a pressure difference between the first and second spaces. Therefore, the vacuum space part  50  may be deformed in a direction in which it is reduced. In this case, adiabatic loss may be caused due to an increase in amount of heat radiation, caused by the contraction of the vacuum space part  50 , and an increase in amount of heat conduction, caused by contact between the plate members  10  and  20 . 
     A supporting unit  30  may be provided to reduce the deformation of the vacuum space part  50 . The supporting unit  30  includes bars  31 . The bars  31  may extend in a direction substantially vertical to the first and second plate members  10  and  20  so as to support a distance between the first and second plate members  10  and  20 . A support plate  35  may be additionally provided to at least one end of the bar  31 . The support plate  35  connects at least two bars  31  to each other, and may extend in a direction horizontal to the first and second plate members  10  and  20 . 
     The support plate  35  may be provided in a plate shape, or may be provided in a lattice shape such that its area contacting the first or second plate member  10  or  20  is decreased, thereby reducing heat transfer. The bars  31  and the support plate  35  are fixed to each other at least one portion, to be inserted together between the first and second plate members  10  and  20 . The support plate  35  contacts at least one of the first and second plate members  10  and  20 , thereby preventing deformation of the first and second plate members  10  and  20 . In addition, based on the extending direction of the bars  31 , a total sectional area of the support plate  35  is provided to be greater than that of the bars  31 , so that heat transferred through the bars  31  may be diffused through the support plate  35 . 
     A material of the supporting unit  30  may include a resin selected from the group consisting of polycarbonate (PC), glass fiber PC, low outgassing PC, polyphenylene sulfide (PPS), and liquid crystal polymer (LCP) so as to obtain high compressive strength, low outgassing and water absorption, low thermal conductivity, high compressive strength at high temperature, and excellent machinability. 
     A radiation resistance sheet  32  for reducing heat radiation between the first and second plate members  10  and  20  through the vacuum space part  50  will be described. The first and second plate members  10  and  20  may be made of a stainless material capable of preventing corrosion and providing a sufficient strength. The stainless material has a relatively high emissivity of 0.16, and hence a large amount of radiation heat may be transferred. In addition, the supporting unit  30  made of the resin has a lower emissivity than the plate members  10  and  20 , and is not entirely provided to inner surfaces of the first and second plate members  10  and  20 . Hence, the supporting unit  30  does not have great influence on radiation heat. Therefore, the radiation resistance sheet  32  may be provided in a plate shape over a majority of the area of the vacuum space part  50  so as to concentrate on reduction of radiation heat transferred between the first and second plate members  10  and  20 . 
     A product having a low emissivity may be preferably used as the material of the radiation resistance sheet  32 . In an embodiment, an aluminum foil having an emissivity of 0.02 may be used as the radiation resistance sheet  32 . Also, at least one sheet of radiation resistance sheet  32  may be provided at a certain distance so as not to contact each other. At least one radiation resistance sheet  32  may be provided in a state in which it contacts the inner surface of the first or second plate member  10  or  20 . Even when the vacuum space part  50  has a low height, one sheet of radiation resistance  32  sheet may be inserted. In case of the vehicle refrigerator  7 , one sheet of radiation resistance sheet  32  may be inserted so that the vacuum adiabatic body  101  has a thin thickness, and the inner capacity of the cavity  100  is secured. 
     Referring to  FIG.  11   b   , the distance between the plate members  10  and  20  is maintained by the supporting unit  30 , and a porous substance  33  may be filled in the vacuum space part  50 . The porous substance  33  may have a higher emissivity than the stainless material of the first and second plate members  10  and  20 . However, since the porous substance  33  is filled in the vacuum space part  50 , the porous substance  33  has a high efficiency for resisting the radiation heat transfer. 
     In this embodiment, the vacuum adiabatic body  101  may be fabricated without using the radiation resistance sheet  32 . 
     Referring to  FIG.  11   c   , the supporting unit  30  maintaining the vacuum space part  50  is not provided. Instead of the supporting unit  30 , the porous substance  33  is provided in a state in which it is surrounded by a film  34 . In this case, the porous substance  33  may be provided in a state in which it is compressed so as to maintain the gap of the vacuum space part  50 . The film  34  is made of, for example, a polyethylene (PE) material, and may be provided in a state in which holes are formed therein. 
     In this embodiment, the vacuum adiabatic body may be fabricated without using the supporting unit  30 . In other words, the porous substance  33  may simultaneously serve as the radiation resistance sheet  32  and the supporting unit  30 . 
       FIG.  12    is a view of a conductive resistance sheet and a peripheral portion of the conductive resistance sheet. 
     Referring to  FIG.  12   a   , the first and second plate members  10  and  20  are to be sealed so as to vacuum the interior of the vacuum adiabatic body  101 . In this case, since the two plate members  10  and  20  have different temperatures from each other, heat transfer may occur between the two plate members  10  and  20 . A conductive resistance sheet  60  is provided to prevent heat conduction between two different kinds of plate members. 
     The conductive resistance sheet  60  may be provided with sealing parts  61  at which both ends of the conductive resistance sheet  60  are sealed to defining at least one portion of the wall for the third space and maintain the vacuum state. The conductive resistance sheet  60  may be provided as a thin foil in unit of micrometer so as to reduce the amount of heat conducted along the wall for the third space. The sealing parts  61  may be provided as welding parts. That is, the conductive resistance sheet  60  and the plate members  10  and  20  may be fused to each other. In order to cause a fusing action between the conductive resistance sheet  60  and the plate members  10  and  20 , the conductive resistance sheet  60  and the plate members  10  and  20  may be made of the same material, and a stainless material may be used as the material. The sealing parts  61  are not limited to the welding parts, and may be provided through a process such as cocking. The conductive resistance sheet  60  may be provided in a curved shape. Thus, a heat conduction distance of the conductive resistance sheet  60  is provided longer than the linear distance of each plate member, so that the amount of heat conduction may be further reduced. 
     A change in temperature occurs along the conductive resistance sheet  60 . Therefore, in order to block heat transfer to the exterior of the conductive resistance sheet  60 , a shielding part  62  may be provided at the exterior of the conductive resistance sheet  60  such that an adiabatic action occurs. In other words, in the vehicle refrigerator  7 , the second plate member  20  has a high temperature and the first plate member  10  has a low temperature. In addition, heat conduction from high temperature to low temperature occurs in the conductive resistance sheet  60 , and hence the temperature of the conductive resistance sheet  60  is suddenly changed. Therefore, when the conductive resistance sheet  60  is opened to the exterior thereof, heat transfer through the opened place may seriously occur. 
     In order to reduce heat loss, the shielding part  62  is provided at the exterior of the conductive resistance sheet  60 . For example, when the conductive resistance sheet  60  is exposed to any one of the low-temperature space and the high-temperature space, the conductive resistance sheet  60  does not serve as a conductive resistor as well as the exposed portion thereof, which is not preferable. 
     The shielding part  62  may be provided as a porous substance  33  contacting an outer surface of the conductive resistance sheet  60 , may be provided as an adiabatic structure, e.g., a separate gasket, which is placed at the exterior of the conductive resistance sheet  60 , or may be provided as the console cover  300  disposed at a position facing the conductive resistance sheet  60 . 
     A heat transfer path between the first and second plate members  10  and  20  will be described. Heat passing through the vacuum adiabatic body may be divided into surface conduction heat {circle around (1)} conducted along a surface of the vacuum adiabatic body  101 , more specifically, the conductive resistance sheet  60 , supporter conduction heat {circle around (2)} conducted along the supporting unit  30  provided inside the vacuum adiabatic body  101 , gas conduction heat {circle around (3)} conducted through an internal gas in the vacuum space part, and radiation transfer heat {circle around (4)} transferred through the vacuum space part. 
     The transfer heat may be changed depending on various depending on various design dimensions. For example, the supporting unit  30  may be changed such that the first and second plate members  10  and  20  may endure a vacuum pressure without being deformed, the vacuum pressure may be changed, the distance between the plate members  10  and  20  may be changed, and the length of the conductive resistance sheet  60  may be changed. The transfer heat may be changed depending on a difference in temperature between the spaces (the first and second spaces) respectively provided by the plate members  10  and  20 . In the embodiment, a preferred configuration of the vacuum adiabatic body  101  has been found by considering that its total heat transfer amount is smaller than that of a typical adiabatic structure formed by foaming polyurethane. In a typical refrigerator including the adiabatic structure formed by foaming the polyurethane, an effective heat transfer coefficient may be proposed as about 19.6 mW/mK. 
     By performing a relative analysis on heat transfer amounts of the vacuum adiabatic body  101  of the embodiment, a heat transfer amount by the gas conduction heat {circle around (3)} may become smallest. For example, the heat transfer amount by the gas conduction heat {circle around (3)} may be controlled to be equal to or smaller than 4% of the total heat transfer amount. A heat transfer amount by solid conduction heat defined as a sum of the surface conduction heat {circle around (1)} and the supporter conduction heat {circle around (2)} is largest. For example, the heat transfer amount by the solid conduction heat may reach 75% of the total heat transfer amount. A heat transfer amount by the radiation transfer heat {circle around (4)} is smaller than the heat transfer amount by the solid conduction heat but larger than the heat transfer amount of the gas conduction heat {circle around (3)}. For example, the heat transfer amount by the radiation transfer heat {circle around (4)} may occupy about 20% of the total heat transfer amount. 
     According to such a heat transfer distribution, effective heat transfer coefficients (eK: effective K) (W/mK) of the surface conduction heat {circle around (1)}, the supporter conduction heat {circle around (2)}, the gas conduction heat {circle around (3)}, and the radiation transfer heat {circle around (4)} may have an order of Math  FIG.  1   . 
         eK  solid conduction heat&gt; eK  radiation transfer heat&gt; eK  gas conduction heat  [Math FIG.  1 ]
 
     Here, the effective heat transfer coefficient (eK) is a value that may be measured using a shape and temperature differences of a target product. The effective heat transfer coefficient (eK) is a value that may be obtained by measuring a total heat transfer amount and a temperature at least one portion at which heat is transferred. For example, a calorific value (W) is measured using a heating source that may be quantitatively measured in the refrigerator, a temperature distribution (K) of the door is measured using heats respectively transferred through a main body and an edge of the door of the refrigerator, and a path through which heat is transferred is calculated as a conversion value (m), thereby evaluating an effective heat transfer coefficient. 
     The effective heat transfer coefficient (eK) of the entire vacuum adiabatic body  101  is a value given by k=QUA Δ T. Here, Q denotes a calorific value (W) and may be obtained using a calorific value of a heater. A denotes a sectional area (m2) of the vacuum adiabatic body, L denotes a thickness (m) of the vacuum adiabatic body, and ΔT denotes a temperature difference. 
     For the surface conduction heat, a conductive calorific value may be obtained through a temperature difference (ΔT) between an entrance and an exit of the conductive resistance sheet  60 , a sectional area (A) of the conductive resistance sheet, a length (L) of the conductive resistance sheet, and a thermal conductivity (k) of the conductive resistance sheet  60  (the thermal conductivity of the conductive resistance sheet  60  is a material property of a material and may be obtained in advance). For the supporter conduction heat, a conductive calorific value may be obtained through a temperature difference (ΔT) between an entrance and an exit of the supporting unit  30 , a sectional area (A) of the supporting unit  30 , a length (L) of the supporting unit  30 , and a thermal conductivity (k) of the supporting unit  30 . Here, the thermal conductivity of the supporting unit  30  is a material property of a material and may be obtained in advance. The sum of the gas conduction heat {circle around (3)}, and the radiation transfer heat {circle around (4)} may be obtained by subtracting the surface conduction heat and the supporter conduction heat from the heat transfer amount of the entire vacuum adiabatic body. A ratio of the gas conduction heat {circle around (3)}, and the radiation transfer heat {circle around (4)} may be obtained by evaluating radiation transfer heat when no gas conduction heat exists by remarkably lowering a vacuum degree of the vacuum space part  50 . 
     When a porous substance  33  is provided inside the vacuum space part  50 , porous substance conduction heat {circle around (5)} may be a sum of the supporter conduction heat {circle around (2)} and the radiation transfer heat {circle around (4)}. The porous substance conduction heat {circle around (5)} may be changed depending on various variables including a kind, an amount, and the like of the porous substance  33 . 
     In the second plate member  20 , a temperature difference between an average temperature of the second plate  20  and a temperature at a point at which a heat transfer path passing through the conductive resistance sheet  60  meets the second plate  20  may be largest. For example, when the second space is a region hotter than the first space, the temperature at the point at which the heat transfer path passing through the conductive resistance sheet meets the second plate member  20  becomes lowest. Similarly, when the second space is a region colder than the first space, the temperature at the point at which the heat transfer path passing through the conductive resistance sheet  60  meets the second plate member  20  becomes highest. 
     This means that the amount of heat transferred through other points except the surface conduction heat passing through the conductive resistance sheet should be controlled, and the entire heat transfer amount satisfying the vacuum adiabatic body  101  may be achieved only when the surface conduction heat occupies the largest heat transfer amount. To this end, a temperature variation of the conductive resistance sheet  60  may be controlled to be larger than that of the plate member  20 . 
     Physical characteristics of the parts constituting the vacuum adiabatic body  101  will be described. In the vacuum adiabatic body  101 , a force by vacuum pressure is applied to all of the parts. Therefore, a material having strength (N/m2) of a certain level may be used. 
     Referring to  FIG.  12   b   , this configuration is the same as that of  FIG.  12   a    except that portions at which the first plate member  10 , the second plate member  20  are coupled to the conductive resistance sheet  60 . Thus, the same part omits the description and only the characteristic changes are described in detail. 
     Ends of the plate members  10  and  20  may be bent to the second space having a high temperature to form a flange part  65 . A welding part  61  may be provided on a top surface of the flange part  65  to couple the conductive resistance sheet  60  to the flange part  65 . In this embodiment, the worker may perform welding while facing only any one surface. Thus, since it is unnecessary to perform two processes, the process may be convenient. 
     It is more preferable to apply the case in which welding of the inside and the outside are difficult as illustrated in  FIG.  12   a    because a space of the vacuum space part  50  is narrow like the vehicle refrigerator  7 . 
       FIG.  13    is a graph illustrating results obtained by observing a time and a pressure in a process of exhausting the inside of the vacuum adiabatic body  101  when a supporting unit  30  is used. 
     Referring to  FIG.  13   , in order to create the vacuum space part  50  to be in the vacuum state, a gas in the vacuum space part  50  is exhausted by a vacuum pump while evaporating a latent gas remaining in the parts of the vacuum space part  50  through heating. However, if the vacuum pressure reaches a certain level or more, there exists a point at which the level of the vacuum pressure is not increased any more (Δt1). After that, the getter is activated by disconnecting the vacuum space part  50  from the vacuum pump and applying heat to the vacuum space part  50  (Δt2). If the getter is activated, the pressure in the vacuum space part  50  is decreased for a certain period of time, but then normalized to maintain a vacuum pressure of a certain level. The vacuum pressure that maintains the certain level after the activation of the getter is approximately 1.8×10 −6  Torr. 
     In the embodiment, a point at which the vacuum pressure is not substantially decreased any more even though the gas is exhausted by operating the vacuum pump is set to the lowest limit of the vacuum pressure used in the vacuum adiabatic body  101 , thereby setting the minimum internal pressure of the vacuum space part  50  to 1.8×10 −6  Torr. 
       FIG.  14    is a graph obtained by comparing a vacuum pressure with gas conductivity. 
     Referring to  FIG.  14   , gas conductivities with respect to vacuum pressures depending on sizes of a gap in the vacuum space part  50  are represented as graphs of effective heat transfer coefficients (eK). Effective heat transfer coefficients (eK) were measured when the gap in the vacuum space part  50  has three sizes of 2.76 mm, 6.5 mm, and 12.5 mm. The gap in the vacuum space part  50  is defined as follows. When the radiation resistance sheet  32  exists inside vacuum space part  50 , the gap is a distance between the radiation resistance sheet  32  and the plate member  10  or  20  adjacent thereto. When the radiation resistance sheet  32  does not exist inside vacuum space part  50 , the gap is a distance between the first and second plate members  10  and  20 . 
     It may be seen that, since the size of the gap is small at a point corresponding to a typical effective heat transfer coefficient of 0.0196 W/mK, which is provided to an adiabatic material formed by foaming polyurethane, the vacuum pressure is 2.65×10 −1  Torr even when the size of the gap is 2.76 mm. Meanwhile, it may be seen that the point at which reduction in adiabatic effect caused by gas conduction heat is saturated even though the vacuum pressure is decreased is a point at which the vacuum pressure is approximately 4.5×10 −3  Torr. The vacuum pressure of 4.5×10 −3  Torr may be defined as the point at which the reduction in adiabatic effect caused by gas conduction heat is saturated. Also, when the effective heat transfer coefficient is 0.1 W/mK, the vacuum pressure is 1.2×10 −2  Torr. 
     When the vacuum space part  50  is not provided with the supporting unit  30  but provided with the porous substance  33 , the size of the gap ranges from a few micrometers to a few hundreds of micrometers. In this case, the amount of radiation heat transfer is small due to the porous substance  33  even when the vacuum pressure is relatively high, i.e., when the vacuum degree is low. Therefore, an appropriate vacuum pump is used to adjust the vacuum pressure. The vacuum pressure appropriate to the corresponding vacuum pump is approximately 2.0×10 −4  Torr. Also, the vacuum pressure at the point at which the reduction in adiabatic effect caused by gas conduction heat is saturated is approximately 4.7×10 −2  Torr. Also, the pressure where the reduction in adiabatic effect caused by gas conduction heat reaches the typical effective heat transfer coefficient of 0.0196 W/mK is 730 Torr. 
     When the supporting unit  30  and the porous substance  33  are provided together in the vacuum space part, a vacuum pressure may be created and used, which is middle pressure between the vacuum pressure when only the supporting unit  30  is used and the vacuum pressure when only the porous substance  33  is used. 
     According to the embodiments, the vehicle refrigerator  7  that receives only power from the outside and is independent apparatus may be efficiently realized. 
     It will be understood that when an element or layer is referred to as being “on” another element or layer, the element or layer can be directly on another element or layer or intervening elements or layers. In contrast, when an element is referred to as being “directly on” another element or layer, there are no intervening elements or layers present. As used herein, the term “and/or” includes any and all combinations of one or more of the associated listed items. 
     It will be understood that, although the terms first, second, third, etc., may be used herein to describe various elements, components, regions, layers and/or sections, these elements, components, regions, layers and/or sections should not be limited by these terms. These terms are only used to distinguish one element, component, region, layer or section from another region, layer or section. Thus, a first element, component, region, layer or section could be termed a second element, component, region, layer or section without departing from the teachings of the present invention. 
     Spatially relative terms, such as “lower”, “upper” and the like, may be used herein for ease of description to describe the relationship of one element or feature to another element(s) or feature(s) as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation, in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, elements described as “lower” relative to other elements or features would then be oriented “upper” relative the other elements or features. Thus, the exemplary term “lower” can encompass both an orientation of above and below. The device may be otherwise oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly. 
     The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the singular forms “a”, “an” and “the” are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will be further understood that the terms “comprises” and/or “comprising,” when used in this specification, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof. 
     Embodiments of the disclosure are described herein with reference to cross-section illustrations that are schematic illustrations of idealized embodiments (and intermediate structures) of the disclosure. As such, variations from the shapes of the illustrations as a result, for example, of manufacturing techniques and/or tolerances, are to be expected. Thus, embodiments of the disclosure should not be construed as limited to the particular shapes of regions illustrated herein but are to include deviations in shapes that result, for example, from manufacturing. 
     Unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. It will be further understood that terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning that is consistent with their meaning in the context of the relevant art and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein. 
     Any reference in this specification to “one embodiment,” “an embodiment,” “example embodiment,” etc., means that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one embodiment of the invention. The appearances of such phrases in various places in the specification are not necessarily all referring to the same embodiment. Further, when a particular feature, structure, or characteristic is described in connection with any embodiment, it is submitted that it is within the purview of one skilled in the art to effect such feature, structure, or characteristic in connection with other ones of the embodiments. 
     Although embodiments have been described with reference to a number of illustrative embodiments thereof, it should be understood that numerous other modifications and embodiments can be devised by those skilled in the art that will fall within the spirit and scope of the principles of this disclosure. More particularly, various variations and modifications are possible in the component parts and/or arrangements of the subject combination arrangement within the scope of the disclosure, the drawings and the appended claims. In addition to variations and modifications in the component parts and/or arrangements, alternative uses will also be apparent to those skilled in the art.