JP6564252B2 - Cooling storage - Google Patents

Description

  The technology disclosed in the present specification relates to a cooling storage having a plurality of storage spaces, and more particularly to an improvement in a structure for circulating and supplying cold air to each storage space.

  Conventionally, a cooling storage having a plurality of storage spaces has been widely used. As a structure for circulating and supplying cold air to each storage space, for example, a structure described in Patent Document 1 below is known. In patent document 1, the partition frame provided with the vertical frame and the horizontal frame is attached to the opening provided in the front surface of the storage main body which consists of a heat insulation box so that attachment or detachment is possible, and each doorway formed by the said partition frame is attached. A cooling storehouse in which a plurality of storage boxes are mounted so as to be drawable is disclosed. In this cooling storage, a plurality of parts including a cooler are arranged in a space behind the vertical frame, and a refrigerant pipe connecting the cooler and a machine room provided on the side of the main body is connected to the rear of the horizontal frame. By connecting the pipes to each other, the space is effectively utilized.

Japanese Patent No. 3714724

  However, in the structure as described above, functional parts such as a cooler, an internal fan, and a sheathed heater that are attached to the rear of the vertical frame are individually attached via brackets or the like installed on the inner surface of the main body. In addition, when manufacturing a cooling storage or maintaining functional parts such as a cooler, it is necessary for an operator to individually attach and detach each part while pushing the upper body into a narrow main body. Therefore, workability is very poor, and the number of work steps is large. In addition, there are many cases in which products and parts are scratched by tools and the like, and improvement has been desired.

  In view of the above situation, the present specification discloses a cooling storage that is excellent in workability at the time of manufacturing and maintenance of functional parts such as a cooler while effectively utilizing the space in the main body.

  The cooling storage disclosed by this specification is equipped with the main body which consists of a heat insulation box, and the some storage space formed in the said main body, A plurality of coolers are included in the boundary part of these storage spaces. A cooling unit in which components are integrated is detachably attached.

  According to the above configuration, by attaching a plurality of parts such as a cooler to the boundary portion of the storage space, the space in the main body can be effectively used, and the plurality of parts can be integrated and detached as a cooling unit. A plurality of parts can be assembled as a cooling unit outside the main body and then attached to the main body. Therefore, the work that the operator must perform while pushing the body into the main body can be significantly reduced. As a result, the work load is reduced, and the components constituting the cooling unit can be assembled in an easy posture, and the assembly quality of each component is improved. In addition, the risk of scratches on the main body, each part, etc. during assembly of the parts is reduced, leading to an improvement in product quality. Furthermore, at the time of manufacture, the cooling unit can be manufactured regardless of the progress of other operations related to the main body, and outsourced production and the like are also possible.

  The cooling storage disclosed by the present specification includes the storage space in which the plurality of storage spaces are formed side by side in the main body across the boundary portion, and the cooling unit includes a frame, Two internal fans attached to the upper part in the frame body, and the cooler may be attached below the internal fan in the frame body. According to such a configuration, the cooling unit can be arranged at the boundary portion in the vertical direction while considering the cooling air flow path by arranging the internal fan and the cooler vertically in the cooling unit.

  Further, the cooling storage disclosed by the present specification is configured such that the frame body includes a front plate, an upper plate, and a rear plate and the lower side is opened, and the cooling unit includes the internal fan and Two side plates attached to the left side and right side of the frame with the cooler interposed therebetween, one of the two internal fans being on the left, the other on the right, While being attached so that it may become a blowing direction, the cold air blower outlet shall be each provided in the position corresponding to the blowing direction front of the said two internal fans in the said 2 side plate. In this case, the outer casing except for the lower part of the cooling unit is covered with the frame and the side plate, so that a short cycle in which the cold air blown out from the cold air outlet is taken into the cooler without circulating in the storage space. Can be prevented. That is, the air in the left and right storage spaces is sucked from the lower side opened in the cooling unit and cooled by a common cooler, and then, by two fans, through the cold air outlets provided on the left and right side plates, It is blown out above the left and right storage spaces. The cold air blown from above lowers the temperature in each storage space while flowing downward according to natural convection. The cooled air is sucked into the cooling unit from below each storage space and cooled again. Thus, the frame and the side plate can be provided with functions as a component mounting member, a cold air guide member, and a short cycle preventing member. As a result, both the left and right storage spaces can be efficiently cooled while reducing the number of parts.

  In addition, the cooling storage disclosed in the present specification has a defrost heater attached below the cooler in the cooling unit, and a resin cover attached to the lower outer surface of the two side plates. It is good also as composition which has.

  When the cooling unit arranged at the boundary portion of the storage space is configured to include a defrost heater to defrost the cooler, the distance between the defrost heater and the storage space is short, and the radiant heat of the defrost heater is stored in the storage space. Since it is easy to affect the room temperature, there are concerns about adverse effects on the contents in the warehouse and insufficient cooling capacity. Therefore, as in the above configuration, by installing a cover made of resin with low thermal conductivity between the defrost heater installation part of the cooling unit and the storage space, the influence of the defrost heater on the storage space can be reduced. Can be reduced.

  Further, the cooling storage disclosed in the present specification is provided with a machine room so as to be adjacent to the left or right side of the main body, and the machine room and the cooling are provided on a side surface of the cooling unit on the machine room side. It is good also as a structure where the piping which connects a container is connected. Here, in the cooling unit, it is preferable that the component attached to the frame body is attached to a side surface opposite to the machine room by a detachable fixing means.

  In a cooling storehouse in which the machine room is provided on one side of the main body and the cooler in the cooling unit and the refrigeration unit in the machine room are connected by piping, maintenance of the cooling unit is started from the machine room side to which the piping is connected. It is not easy to do. If the structure inside the cooling unit is attached or removed from the opposite side (opposite side) to the machine room as in the above configuration, the side plate on the opposite side is removed and each part can be removed and attached relatively easily. Then, repair or replacement can be performed. Moreover, if each component is individually attached to the frame, only the components requiring maintenance can be removed.

  Further, the cooling storage disclosed by the present specification is such that, in the cooling unit, a U-bend pipe provided in the cooler is disposed in a bend space provided facing a rear surface of a front plate of the frame body, It is good also as a structure by which the lead wire connected to an internal fan and the said cooler is wired in the said bend space.

  According to the said structure, the wiring and arrangement | positioning of each component assembled | attached to a cooling unit can be performed in the bend space in a frame. That is, since wiring of each component can be performed with the cooling unit removed from the main body, wiring work is facilitated, and effects such as shortening of work time, reduction of work load, improvement of quality and stabilization can be obtained. In addition, if the lead wires connected to each component are wired so as to run over the internal structure of the frame and gathered in the bend space, the lead wires may be cut or lead by being sandwiched when attaching the side plate. It is possible to avoid such a situation that the wire is pulled and the parts are damaged.

  Further, the cooling storage disclosed by the present specification is a box with the main body having an opening on the front surface, and a unit mounting plate for holding the cooling unit in a suspended state on the top surface in the main body. It is good also as a structure provided.

  According to the above configuration, the space below the cooling unit can be effectively used by fixing the cooling unit in a state of being suspended from the top surface in the front opening type main body. And a cooling unit can be attached or detached easily irrespective of the structure of the cooling unit lower part.

  Moreover, the cooling storage disclosed by this specification is good also as a structure by which the drain pan is attached below the said cooling unit attached to the said unit attachment board.

  According to the above configuration, the condensate generated on the cover, the frame, etc. covering the cooler without disturbing the attachment / detachment of the cooling unit by disposing a separate drain pan below the suspended cooling unit. Can take water properly.

  According to the technology disclosed in the present specification, it is possible to provide a cooling storage that is excellent in workability during manufacturing and maintenance of the cooling unit while effectively utilizing the space in the main body.

1 is an external perspective view of a cooling storage according to an embodiment. Perspective view of the cooling storehouse with drawers, guide rails and legs removed Cross-sectional perspective view showing the arrangement of the cooling unit in the body Exploded perspective view of the cooling unit with the cooler attached to the frame Exploded perspective view of the cooling unit with the internal fan and heater bracket attached to the frame Perspective view of the frame Enlarged perspective view of the rear upper part of the cooling unit The perspective view which shows arrangement | positioning operation | movement of the unit mounting plate fixed in the main body, and a cooling unit Enlarged view of the unit mounting plate fixing part on the top of the main unit Cross-sectional perspective view showing the fitting state between the rear part of the cooling unit and the unit mounting plate The perspective view which shows the piping state between a cooling unit and a machine room Partially exploded perspective view showing the fixed state of the front of the cooling unit Cross-sectional perspective view of the cooling unit installation part from the rear Partially exploded sectional perspective view showing a state in which the left side plate of the cooling unit attached to the body is removed Partially exploded sectional perspective view showing a state in which the right side plate of the cooling unit attached to the body is removed

  Hereinafter, an embodiment of the present invention will be described with reference to FIGS. In the following, the left side in FIG. 1 is left (right side is right), the front side is front (back side is back or back), and the upper side is top (bottom side is down).

First, the whole structure of the cooling storage of this embodiment is demonstrated, referring FIGS. 1-3.
As shown in FIGS. 1 and 2, the cooling storage 1 according to the present embodiment is a drawer-type cooling storage, and the inside of a main body 2 made of a low-profile, horizontally long heat insulation box having an opening on the front surface is a storage chamber. 3 and supported by four legs.

As shown in FIG. 2, a partition frame (vertical frame) 6 disposed in the vertical direction at the center in the left-right direction is provided in the opening 5 on the front surface of the main body 2. 7 are detachably mounted to form four entrances 8 on the top and bottom and on the left and right, and four storage spaces 4 are provided corresponding to the back side of each entrance 8.
Although not shown in FIGS. 2 and 3, each storage space 4 is provided with a guide rail along the depth direction, and a drawer 9 having a door on the front surface as shown in FIG. 1 extends along the guide rail. A storage box (not shown) that stores food and the like is placed in each drawer.

  As shown in FIG. 3 etc., the cooling unit 10 is arrange | positioned behind the vertical frame 6 (namely, boundary part of the storage space 4). The cooling unit 10 is disposed with a space between the rear surface of the storage chamber 3 and the left and right storage spaces 4 communicate with each other at the rear.

  On the other hand, as shown in FIG. 3 and the like, a machine room 100 is provided on the left side of the main body 2, and a condensation unit 110 including a compressor 101 and a condenser 102 is installed therein. The condensing unit 110 and a cooler 40 to be described later in the cooling unit 10 are connected by a refrigerant pipe 11 as shown in FIG. 11 and the like to constitute a well-known refrigeration cycle, and this refrigeration cycle is controlled and operated. Thus, the interior of the storage chamber 3 including each storage space 4 is maintained at a substantially constant cooling temperature. A top plate 103 is stretched across the main body 2 and the ceiling surface of the machine room 100.

Next, the cooling unit 10 according to the present embodiment will be described.
As shown in FIGS. 4 and 5, the cooling unit 10 includes two internal fans 30 </ b> A and 30 </ b> B and a cooler inside the frame 20 formed to have a substantially U-shaped outline. 40 and a heater bracket 50 for attaching a defrosting heater 51 (FIG. 13) are mounted, and two side plates 60 (left side plate 60L and right side plate 60R) are provided on both left and right sides of the frame 20 so as to sandwich them. Is configured. Resin covers 70 are attached to the lower portions of the side plates 60, respectively.

  The frame 20 has a shape as shown in FIG. 6 and the like, and is attached to the upper plate 22, the rear plate 23, and the angle-shaped right front frame 21 so as to form an opening at the center in the vertical direction. An upper front plate 24 and a lower front plate 25 are provided, and are formed to open downward and to the left and right sides.

As shown in FIG. 7, a fitting slit 232 extending in the left-right direction and penetrating in the front-rear direction is provided on the upper portion of the rear plate 23 of the frame body 20. The fitting slit 232 is fitted with a projection 84 of the unit mounting plate 80 described later, and has an inclined surface whose upper and lower edges are inclined toward the front, so that the projection 84 can be easily received.
Further, as shown in FIG. 6 and the like, the lower front plate 25 of the frame body 20 is formed with screw mounting holes for screwing side plates 60 and rail mounts 14 to be described later, Is bent so as to incline toward the rear, and an inclined portion 251 is formed.

  As shown in FIG. 5 and the like, two internal fans 30 </ b> A and 30 </ b> B are mounted on the upper part in the frame 20. Vertical plates 261, 262, and 263 are attached to the lower surface of the upper plate 22 in the frame 20 so as to hang downward by a predetermined dimension from the front, center, and rear positions. The vertical plate 261 and the vertical plate 262, and the lower end of the vertical plate 262 and the vertical plate 263 are connected by the horizontal plate 271 and the horizontal plate 272 (FIG. 4), respectively, and two rectangular frames are connected to the front and rear. The fan shroud 28 is formed. The vertical plate 262 provided in the center is shared by the two rectangular frames and functions as a partition plate. In addition, attachment pieces 29 having screw attachment holes are provided at the four corners of each rectangular frame. As shown in FIG. 4 and the like, the internal fans 30A and 30B are fitted into the fan shroud 28 from the right side, and the screws 19 are fastened from the right side with the corners in contact with the mounting pieces 29. Mounted on the frame 20. The horizontal plates 271 and 272 that form the lower frame in the two rectangular frames and the attachment pieces 29 of the respective rectangular frames are arranged at positions shifted from each other in the left-right direction, and are arranged in the two rectangular frames. Among the internal fans 30, the front internal fan 30A is mounted on the right side, and the rear internal fan 30B is mounted on the left side with the blowing direction.

  As shown in FIG. 4 and the like, a cooler 40 is mounted below the fan shroud 28 in the frame 20. As shown in FIGS. 5 and 14, the cooler 40 has end plates 41 arranged on both front and rear sides, and an evaporation pipe 42 is formed in a meandering manner while penetrating through the end plate 41, so as to form a block as a whole. Has been. The evaporation pipe 42 is bent into a U shape on the outside (front side or rear side) of the end plate 41 to form a U-bend pipe 42U. On the other hand, as shown in FIGS. 4 and 6, in the frame body 20, the angle-shaped right front frame 21 includes a front edge portion 211 and a right edge portion 212, and the right end of the rear plate 23 has a right edge. A rear plate flange 231 bent forward is formed. As shown in FIG. 5, the cooler 40 is fitted into the frame 20 from the left side, and as shown in FIG. 4, the end plate 41 is inserted into the right edge 212 of the right front frame 21 and the rear plate flange of the rear plate 23. The screw 19 is fastened to the frame body 20 from the right side while being in contact with the H.231. The frame 20 has a width in the left-right direction substantially equal to the same width of the cooler 40, and a depth in the front-rear direction is set longer than the same depth of the cooler 40. It is mounted in the frame 20 while forming a clearance. As shown in FIG. 14, the bend space S formed between the end plate 41 of the cooler 40, the upper front plate 24, the lower front plate 25, and the rear plate 23 of the frame body 20 includes the above-described U A bend pipe 42U is arranged. As shown in FIGS. 14 and 15, in the front bend space S, the lead wires 13 connected to the internal fans 30A, 30B, the cooler 40, the defrost heater 51, the thermistor 57, and the like which will be described later. Are wired together. The lead wire 13 extends along the frame 20 with a passage 259 behind the lower front plate 25, a notch-like passage 219 provided in the front frame 21, a notch-like passage 289 provided in the fan shroud 28, and the like as a wiring passage. And connected to each component so as to wrap around the right side surface of the cooler 40 and the like.

  As shown in FIG. 4 etc., the heater bracket 50 for attaching the defrosting heater 51 is mounted below the cooler 40. The heater bracket 50 has a depth in the front-rear direction that is shorter than the interval between the end plates 41 of the cooler 40, and a width in the left-right direction that is substantially the same as the width in the left-right direction of the cooler 40. The upper surface of the heater bracket 50 has a ladder shape in which two girder portions 53 that extend in the front-rear direction are arranged between the left and right side edge portions 52 that extend in the front-rear direction, and these are connected by the front and rear edges 54. As shown in FIG. 13, a rod-shaped defrost heater 51 is attached to the lower surface of the two girder parts 53. A mounting flange 55 is formed on the right side edge portion 52 of the heater bracket 50 so as to protrude forward and backward while protruding upward. On the other hand, as shown in FIG. 4 and the like, the lower end portion of the end plate 41 of the cooler 40 is provided with screw attachment holes, and the rear plate flange 231 of the rear plate 23 and the right edge portion 212 of the right front frame 21 are provided. It protrudes downward from the lower end. As shown in FIG. 4, the heater bracket 50 is fitted into the frame body 20 from the right side, and is fastened with the screws 19 from the right side with the mounting flange 55 being in contact with the lower end portion of the end plate 41. Mounted on the cooler 40.

As shown in FIGS. 4 and 5, two side plates 60 (on the left and right side surfaces of the frame body 20 with the aforementioned internal fans 30A and 30B, the cooler 40, and the heater bracket 50 interposed therebetween). 60L, 60R) are attached. As shown in FIGS. 4 and 5, the side plate 60 is a plate member having a dimension and shape that closes both sides of the frame 20 almost closely, and corresponds to the blowout front of the internal fans 30 </ b> A and 30 </ b> B. That is, a cold air outlet 61 composed of a plurality of thin slits and pores is formed at the front upper portion of the left side plate 60L and at the rear upper portion of the right side plate 60R. Further, locking notches 64 are provided at two locations on the rear end. On the other hand, as shown in FIG. 5 and the like, locking pieces 233 protrude from the left edge portion of the rear plate 23 of the frame body 20 and the rear end portion of the rear plate flange 231 at two locations. As shown in FIG. 7, the side plates 60 are slid from the front in contact with the outside of the frame body 20, and the base end portion of the locking piece 233 is released by the locking notch 64 described above, while the locking piece The rear portion is attached to the frame body 20 by fitting and locking the side surface plates 60 inside 233. On the other hand, the front end portion 62 is formed in a stepped shape at the front portion of the both side surface plates 60, and the both side surface plates 60 are screwed to the front end portion 62 from the outside with the rear portions locked as described above. Thus, it is attached to the frame 20.
A notch 63 is formed in the vicinity of the center in the height direction of the front end portion 62 of the left side plate 60L to allow the refrigerant pipe 11 and the like to be described later to pass therethrough. Moreover, the lower end center part of the both-sides board 60 is bent so that it may mutually adjoin below, and the inclined part 65 is formed. In addition, the inclination part 65 is provided so that the lower end part may be located below the lower end of the defrost heater 51, as shown in FIG. As shown in FIG. 5, a thermal fuse 56 for controlling energization to the defrost heater 51 and a thermistor 57 are mounted via a bracket 58 at the central portion in the front-rear direction of the inclined portion 65 of the left side plate 60L. It has come to be.

  As shown in FIGS. 4 and 5, a cover 70 is attached to the lower part of the side plate 60. The cover 70 is a resin band member extending in the front-rear direction, and has a shape such that the lower end bulges outward with respect to the upper edge, the front edge, and the rear edge formed to be flush with each other. Is formed. A suction port 71 made up of a plurality of pores is formed at the center of the cover 70 in the front-rear direction. The cover 70 is attached to the side plates 60 by bringing the upper edge, the front edge, and the rear edge into contact with the lower portions of the side plates 60 and screwing them from the outside.

Subsequently, the arrangement of the cooling unit 10 in the storage chamber 3 will be described.
Prior to disposing the cooling unit 10 in the storage chamber 3, as shown in FIG. 8, the unit mounting plate 80 is fixed to the position where the cooling unit 10 is disposed on the top surface 301 of the storage chamber 3. As shown in FIG. 9, the unit mounting plate 80 includes a guide wall 82 that hangs down from both left and right edges of a rectangular plate 81 fixed to the top surface 301, a rear wall 83 that hangs down from the rear edge, and a rear wall. And a protrusion 84 protruding forward from the lower end of 83. The unit mounting plate 80 is fixed in the storage chamber 3 by bringing the plate 81 into contact with the top surface 301 of the storage chamber 3 and fastening the screws 19 to the four corners of the plate 81 from below. The left and right guide walls 82 are formed such that the hanging length at the front and rear portions is larger than the hanging length at the center portion, an insertion hole 85 is formed at the front portion, and the rear portion is connected to the rear wall 83. ing. The protruding portion 84 is provided at a position corresponding to the fitting slit 232 provided in the upper part of the rear plate 23 of the frame body 20, in the center in the left-right direction of the rear wall 83.

  When the cooling unit 10 is disposed in the storage chamber 3, as shown in FIG. 8, the cooling unit 10 is inserted from the front opening 5 and fixed to the top surface 301 of the storage chamber 3. The cooling unit 10 is slid to the back side of the storage chamber 3 with the left and right side walls along the guide walls 82, and the rear plate 23 is inserted into the rear wall 83 of the unit mounting plate 80. Push until it touches. As a result, as shown in FIG. 10, the protrusion 84 of the unit mounting plate 80 is fitted into the fitting slit 232 formed in the rear plate 23 of the frame 20, and the rear portion of the cooling unit 10 is placed in the storage chamber 3. Fixed inside. The front portion of the cooling unit 10 is screwed from the outside by aligning the insertion hole 85 provided in the front portion of the guide wall 82 with the screw mounting hole provided in the front portion of the frame body 20. . As a result, the cooling unit 10 is suspended and fixed to the top surface 301 of the storage chamber 3 with the upper portions of the left and right side surfaces being in contact with and held by the guide walls 82. Furthermore, the front lower side of the cooling unit 10 is firmly fixed by fastening screws 19 to a rail mount 14 attached to the main body 2 in front of the cooling unit 10 as shown in FIG.

  As shown in FIG. 11, a drain pan 90 is attached to the bottom surface 302 of the storage chamber 3 below the cooling unit 10. As shown in FIG. 14 and the like, the drain pan 90 is a shallow dish-shaped member, and a total of four projecting pieces 91 projecting from the bottom surface to the left and right sides are screwed to the bottom surface 302 so that It attaches in the storage chamber 3 so that it may fall. As described above, the inclined portion 65 and the inclined portion 251 are formed at the lower ends of the side plate 60 and the lower front plate 25 of the cooling unit 10, and the lower ends of these inclined portions are shown in FIGS. 14, the drain pan 90 is set so as to be positioned above the inside of the side wall. On the other hand, as shown in FIG. 13, the lower end of the cover 70 attached to the side plate 60 is disposed on the outer side (the storage space 4 side) than the side wall of the drain pan 90.

  Next, piping between the cooling unit 10 and the machine room 100 will be described. The refrigerant pipe 11 that is taken in and out of the cooler 40 is welded and connected on the front side of the cooling unit 10. As shown in FIG. 11 and the like, the refrigerant pipe 11 connected to the cooler 40 is drawn leftward from a notch 63 formed in the front end portion 62 of the left side plate 60L on the front side of the cooling unit 10, and The machine room 100 passes through the opening 5 through the front portion, is bent along the left side surface 303 of the storage chamber 3, is piped, and is formed from two pipe through holes 104 formed near the center of the left side surface 303. Introduced or derived within.

  The refrigerant pipe 11 is covered with a heat insulating tube 12 and is piped behind the horizontal frame 7 arranged in the opening 5 on the front surface of the storage chamber 3. As shown in FIG. 12, two rail mounts 14 for mounting guide rails for guiding the drawer 9 are arranged on the front surface of the cooling unit 10 mounted in the storage chamber 3. 25 and screwed to the bottom surface 302 of the storage chamber 3 as shown in FIG. As shown in FIG. 3, the left side rail mount 16 is also attached to the front edge portion of the left side 303 of the storage chamber 3, and the left side of the rail mount 14 attached to the front surface of the cooling unit 10. A pipe cover 15 is horizontally attached between the rail mount 14 disposed on the left side and the left side rail mount 16. The piping cover 15 is formed in a channel shape having a U-shaped cross section that opens to the front surface. As shown in FIG. 12, the heat insulating tube 12 is fitted into the channel. As shown in FIG. 3, the vertical frame 6 is disposed in front of the rail mount 14, and the horizontal frame 7 is disposed in front of the pipe cover 15, so that the pipe 9 can be piped without hindering the withdrawal and withdrawal of the drawer 9. It is like that. 2 and 3, the horizontal frame 7 is also detachably attached between the right side surface 304 of the storage chamber 3 and the vertical frame 6, and the drawer 9 is detachably mounted as shown in FIG. The

Next, the maintenance work for the parts constituting the cooling unit 10 will be described. First, the horizontal frame 7 attached to the right side of the storage chamber 3 and the right side plate 60R of the cooling unit 10 are removed. The horizontal frame 7 is detachably attached to the main body 2 and can be easily removed. Further, the right side plate 60R can be easily removed by removing the front screw and sliding it forward to disengage the engaging piece 233 of the rear plate 23.
When maintenance of the internal fans 30A, 30B and the defrost heater 51 is performed, the screws 19 fixing the internal fans 30A, 30B or the heater bracket 50 to the frame 20 are removed from the right side of the cooling unit 10. Then, the internal fans 30A, 30B or the heater bracket 50 are taken out to the right side of the frame 20, and the connecting portion of the lead wire 13 is removed as necessary.
When performing maintenance of the cooler 40, the left side plate 60L of the cooling unit 10 is removed after the piping cover 15 is removed. The left side plate 60L is removed from the left side plate 60L by releasing the front screw and releasing the engagement with the locking piece 233 of the rear plate 23 from the locking notch 64 while slightly bending and deforming. Next, the screw 19 that fixes the cooler 40 to the frame body 20 is detached from the right side of the cooling unit 10, and the refrigerant pipe 11 that is connected to the machine room 100 is slightly bent, Take it out to the left of the body 20 and remove the weld if necessary.
Each component removed and repaired or exchanged as described above is assembled to the cooling unit 10 by a procedure reverse to the above.

As described above, according to the present embodiment, the following operational effects can be obtained.
In the present embodiment, a plurality of components such as the cooler 40 are attached to the rear of the vertical frame 6, that is, at the boundary portion of each storage space 4, so that the space in the storage chamber 3 is effectively utilized. Moreover, the heater bracket 50 for attaching the internal fans 30A and 30B, the cooler 40, and the defrosting heater 51 is assembled into the frame body 20 and integrated as the cooling unit 10 so that the entire cooling unit 10 can be mounted. After the cooling unit 10 is assembled, it can be installed in the storage chamber 3. Therefore, the work that the operator must perform while pushing the body into the storage chamber 3 can be significantly reduced. As a result, the work load is reduced, and each part can be assembled into the frame body 20 with an easy posture, so that the assembly quality of each part is improved. In addition, the risk of scratches on the main body 2 and each component when assembling the components is reduced, leading to an improvement in product quality. Furthermore, at the time of manufacture, the cooling unit 10 can be manufactured regardless of the progress of other operations related to the main body 2, and outsourced production or the like is also possible.

Further, in this embodiment, the internal fans 30A and 30B and the cooler 40 are arranged vertically in the cooling unit 10 so that the cooling unit 10 is arranged behind the vertical frame 6 while taking into consideration the cold air flow path. Is done. Further, the outer wall except the lower side of the cooling unit 10 is covered with the frame body 20 and the side plate 60, so that the cold air blown from the cold air outlet 61 is taken into the cooler 40 without circulating in the storage chamber 3. Occurrence of short cycle can be prevented. That is, the air in the left and right storage spaces 4 is sucked from the left and right suction ports 71 provided in the cover 70 of the cooling unit 10 and cooled by the common cooler 40, and then the two internal fans 30A and 30B. Thus, the air is blown out above the left and right storage spaces 4 through the cold air outlets 61 provided in the left and right side plates 60L and 60R. The cold air blown from above lowers the temperature in each storage space 4 while flowing downward according to natural convection. The cooled air is sucked into the cooling unit 10 from below the storage spaces 4 through the suction ports 71 and cooled again. Thus, the frame 20 and the side plate 60 function as a component mounting member, a cool air guide member, and a short cycle prevention member. As a result, it is possible to efficiently cool both the left and right storage spaces 4 while reducing the number of parts.
Here, by providing the inclined portion 65 on the side plate 60, the air in the cabinet is surely sucked from the lower side of the cooler 40, and the occurrence of a short cycle is more steadily prevented. On the other hand, the flow rate of cold air can be secured by appropriately adjusting the distance between the inclined portion 65 and the drain pan 90.

In the present embodiment, the defrost heater 51 is attached to the cooling unit 10 and the cooler 40 is defrosted. However, the thermal conductivity of the cooler 40 is not limited between the portion where the defrost heater 51 is disposed and the storage chamber 3. By attaching the low resin cover 70, the influence of the defrost heater 51 on the storage space 4 is reduced.
Furthermore, since the lower end of the inclined portion 65 of the side plate 60 is set to be positioned below the defrost heater 51, heat conduction from the defrost heater 51 to the storage chamber 3 is also blocked by the inclined portion 65. Further, since the cover 70 is disposed outside the inclined portion 65, the radiant heat of the defrost heater 51 does not directly hit the resin cover 70, and the melting of the resin is avoided.

  The cooling storage 1 according to the present embodiment is configured such that a machine room 100 is provided on the left side of the main body 2 and a refrigerant pipe 11 welded to the left side of the cooling unit 10 is drawn out. For this reason, work such as maintenance is difficult to perform from the left side of the cooling unit 10 and takes time and effort. Therefore, in the cooling unit 10 according to the present embodiment, the internal fans 30A and 30B, the cooler 40, and the heater bracket 50 are all screwed from the right side. Therefore, the right side plate 60R of the cooling unit 10 can be removed and the screws can be detached from the right side. In particular, the internal fans 30A and 30B and the defrost heater 51, which have a relatively short component life and require frequent maintenance, can be removed on the right side of the cooling unit 10 to reduce the work load such as repair and replacement. Is done. On the other hand, since the refrigerant pipe 11 connected to the machine room 100 is connected and welded from the left side, the cooler 40 is removed from the left side of the cooling unit 10. Further, since the internal fans 30A and 30B and the cooler 40 are individually mounted on the frame body 20, only the target part can be removed when these maintenances are necessary.

  According to the present embodiment, the lead wire 13 connected to each component such as the internal fans 30 </ b> A and 30 </ b> B and the defrost heater 51 is wired and routed in the bend space S in the frame body 20. That is, before the cooling unit 10 is attached to the storage chamber 3, the wiring of each component can be performed, so that the wiring work is facilitated, the work time is reduced, the work load is reduced, the quality is improved and stabilized, and the like. Is obtained. The lead wires 13 connected to each component are wired along the internal structure of the frame body 20, that is, the passages (wiring passages) 259, 219, 289 provided in the front frame 21, the fan shroud 28, and the like. Is held in the frame 20. Therefore, it is possible to avoid a situation in which the lead wire 13 is cut and leaked by being sandwiched when the side plate 60 is attached, or the lead wire 13 is pulled to break the component. Furthermore, since the lead wires 13 are collected in the bend space S in the front part of the cooling unit 10, the wires connected thereto can be directly drawn out together with the refrigerant pipe 11 from the notch 63 of the left side plate 60L. Moreover, since the lead wire 13 that has passed through the bend space S is connected to each component so as to wrap around the right side surface of the frame body 20 in the cooling unit 10, the lead wire 13 may become an obstacle when the component is removed. In addition, the wiring work can be easily performed again.

According to this embodiment, the cooling unit 10 is fixed in a state of being suspended from the top surface 301 of the storage chamber 3 via the unit mounting plate 80. Therefore, the space below the cooling unit 10 can be used effectively, and the cooling unit 10 can be easily attached and detached regardless of the configuration below the cooling unit 10.
The cooling unit 10 is guided by the guide wall 82 of the unit mounting plate 80, and the rear portion is fixed by fitting the fitting slit 232 and the protrusion 84 of the unit mounting plate 80. Therefore, it is not necessary to insert the body all the way into the storage chamber 3 and perform operations such as screwing. Further, the right and left side surfaces of the cooling unit 10 are sandwiched between the guide walls 82, thereby preventing rattling.

According to the present embodiment, by disposing a separate drain pan 90 below the suspended cooling unit 10, the frame body 20 that covers the cooler 40 without interfering with the attachment / detachment of the cooling unit 10, Condensed water generated on the side plate 60 and the like can be appropriately received.
Here, the inclined portion 65 and the inclined portion 251 are formed at the lower ends of the side plate 60 and the lower front plate 25, and these lower ends are arranged above the inside of the side wall of the drain pan 90. The condensed water can be reliably received in the drain pan 90. On the other hand, the lower end of the cover 70 attached to the side plate 60 is disposed outside the side wall of the drain pan 90 (on the storage space 4 side), so that stored items such as foods do not fall into the drain pan 90. Yes.

<Other embodiments>
The technology disclosed in the present specification is not limited to the embodiment described with reference to the above description and drawings. For example, the following embodiments are also included in the technical scope.

(1) In the above embodiment, the drawer-type cooling storage provided with the drawer is exemplified, but the present invention is not limited to this. The present technology may be applied to other cooling storages.
(2) In the above-described embodiment, the configuration in which the vertical frame is disposed on the front surface of the cooling unit has been described. However, the cooling unit frame itself is installed in a cooling storage unit having a function as a partition frame of the main body opening. Technology may be applied. Moreover, although the said embodiment described about the structure which arrange | positioned refrigerant | coolant piping behind the horizontal frame, the structure arrange | positioned along the upper edge or lower edge of opening, etc. may be sufficient as refrigerant | coolant piping.

DESCRIPTION OF SYMBOLS 1 ... Cooling storage, 2 ... Main body, 4 ... Storage space, 10 ... Cooling unit, 11 ... Refrigerant piping (pipe), 13 ... Lead wire, 19 ... Screw (fixing means), 20 ... Frame, 22 ... Upper plate, 23 ... Rear plate, 24 ... Upper front plate, 25 ... Lower front plate, 30A, 30B ... Inside fan, 40 ... Cooler, 42U ... U bend pipe, 51 ... Defrost heater, 60L, 60R ... Side plate, 61 ... Cold air outlet, 70 ... Cover, 80 ... Unit mounting plate, 90 ... Drain pan, 100 ... Machine room, S ... Bend space

Claims (7)

A main body made of an insulated box,
A plurality of storage spaces formed in the main body,
A cooling unit including a cooler is detachably attached to a boundary portion of the plurality of storage spaces ,
The plurality of storage spaces include those formed side by side in the main body across the boundary portion,
The cooling unit includes a frame and two internal fans attached to the upper part of the frame,
The cooler is attached below the internal fan in the frame ,
The frame body is configured to include a front plate, an upper plate, a rear plate and open the lower side,
The cooling unit includes two side plates attached to the left side surface and the right side surface of the frame body with the internal fan and the cooler interposed therebetween,
Of the two internal fans, one is mounted on the left side and the other on the right side with the blowing direction, and the two side plates correspond to the blowing direction front of the two internal fans. in a position which is, cooling reservoir you wherein each cold air outlet is provided. Below the cooler in the cooling unit, while the defrosting heater is mounted on the outer surface under the two side plates, according to claim 1 characterized in that the resin cover is attached Cooling storage. A machine room is provided so as to be adjacent to the left side or the right side of the main body, and a pipe connecting the machine room and the cooler is connected to a side surface of the cooling unit on the machine room side,
The cooling unit according to claim 1 or 2 , wherein in the cooling unit, a part attached to the frame is attached to a side surface opposite to the machine room by a detachable fixing means. Storage. A main body made of an insulated box,
  A plurality of storage spaces formed in the main body,
  A cooling unit including a cooler is detachably attached to a boundary portion of the plurality of storage spaces,
  The plurality of storage spaces include those formed side by side in the main body across the boundary portion,
  The cooling unit includes a frame and two internal fans attached to the upper part of the frame,
  The cooler is attached below the internal fan in the frame,
  A machine room is provided so as to be adjacent to the left side or the right side of the main body, and a pipe connecting the machine room and the cooler is connected to a side surface of the cooling unit on the machine room side,
  In the cooling unit, a component attached to the frame body is attached to a side surface opposite to the machine room by a detachable fixing means. In the cooling unit,
A U-bend pipe provided in the cooler is disposed in a bend space provided facing the rear surface of the front plate of the frame, and a lead wire connected to the internal fan and the cooler is provided in the bend space. The cooling storage according to any one of claims 1 to 4 , wherein the cooling storage is wired. The main body is a box with an opening on the front,
The cooling storage according to any one of claims 1 to 5 , wherein a unit mounting plate for holding the cooling unit in a suspended state is provided on a top surface in the main body. The cooling storage according to claim 6 , wherein a drain pan is attached below the cooling unit attached to the unit attaching plate.

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