JPWO2006013762A1 - Cooling storage - Google Patents

Abstract

A wall 40 that also serves as a drain pan is stretched on the ceiling of the storage chamber 12 to define a cooler chamber 23, and a cooler 28 is accommodated on the back side. The defrosting heater 50 is wired in a zigzag manner on the main body 52 of the heating plate 51, and the main body 52 is attached to the lower surface of the cooler 28. A fan mounting portion 56 is formed to extend from the front edge of the main body portion 52 in an obliquely upward posture, and a mounting portion 58 ahead is fixed to the unit base 21. A cooling fan device 60 is mounted on the fan mounting portion 56. Although the fan device 60 may also form frost, when the heater 50 is heated in the defrosting operation, the heat is also transferred to the fan device 60 through the heating plate 51 and receives the heat. The device 60 is also efficiently defrosted. The defrost water is received by the cooling duct 40 and drained from the drain port 48.

Description

  The present invention relates to a cooling storage, and more particularly to improvement of a structure suitable for defrosting a cooling fan device.

  2. Description of the Related Art Conventionally, for example, one described in JP-A-2003-214755 is known as an example of a commercial cooling storage. In this case, a cooler room is defined by a duct that also serves as a drain pan being stretched on the ceiling of the storage body, and a cooler connected to a refrigeration apparatus outside the warehouse is accommodated in the cooler room. In addition, a suction port equipped with a cooling fan device is provided on the front side of the duct, and a blower outlet is provided on the back side. On the other hand, a heater for defrosting is attached to the cooler.

  The cooling operation is performed by driving the refrigeration apparatus and the cooling fan apparatus, and cold air is generated by exchanging heat with the cooler while the air in the warehouse is sucked from the suction port and flows through the cooler chamber, The inside of the warehouse is cooled by being circulated and supplied so that the cold air is blown out from the outlet. On the other hand, the defrosting operation of the cooler is performed by stopping the refrigeration device and the cooling fan device and supplying heat to the heater to generate heat. After being received by a duct (drain pan), it is drained to the outside.

  In the cooling storage as described above, it is mainly the cooler that frosts, but for the cooling fan device, for example, the case and fan guard are cooled to the same level as the inside temperature, and when the door is opened Because it is in a position where intruded outside air is easy to touch, depending on conditions such as the freezer temperature being low or the outside air being hot and humid, there was a possibility of frosting on the case, fan guard, etc. . However, as a conventional defrosting countermeasure, it is only enough to apply the radiant heat from the heater to the cooling fan device, and it cannot be said that it can sufficiently defrost.

  The present invention has been completed based on the above circumstances, and an object thereof is to enable effective defrosting of a cooling fan device.

  As a means for achieving the above object, the present invention is characterized in that a heat conducting member for conducting heat of the heating device provided in the cooler to the cooling fan device is provided.

  When a heating plate mounted with a heating device is mounted on a cooler, the heating plate can be used as a heat conduction member if the cooling fan device is mounted on a fan mounting portion extending from the heating plate. .

  In addition, when the heating device is attached to the cooler and the cooling fan device is attached to the wall of the cooler chamber via the defrosting plate, the heating device or the cooler is brought into contact with the defrosting plate. If the contact portion is provided, it can be used as a heat conducting member.

1 is a longitudinal sectional view of a cooling storage according to Embodiment 1 of the present invention. 2 is a cross-sectional view of the vicinity of the cooler chamber Fig. 3 is an exploded sectional view of the vicinity of the cooler 4 is an exploded perspective view of the vicinity of the cooler. FIG. 5 is a sectional view of the vicinity of the cooler chamber according to the second embodiment. FIG. 6 is a perspective view of the heating plate of the second embodiment. FIG. 7 is a cross-sectional view of the vicinity of the cooler chamber according to the third embodiment. FIG. 8 is a perspective view of a heating plate and a cooling duct according to the third embodiment. FIG. 9 is a sectional view of the vicinity of the cooler chamber according to the fourth embodiment. FIG. 10 is an exploded perspective view of the vicinity of the drain of the cooling duct according to the fourth embodiment. FIG. 11 is a side view of a heat conducting member according to the fourth embodiment. FIG. 12 is a cross-sectional view showing the operation of attaching the heat conducting member according to the fourth embodiment to the drain of the pipe portion. FIG. 13 is a perspective view and a partial enlarged cross-sectional view showing the mounting structure on the suction port side of the cooling duct according to the fourth embodiment. FIG. 14 is a cross-sectional view of the vicinity of the cooler chamber according to the fifth embodiment. FIG. 15 is an exploded perspective view of the vicinity of the heating plate according to the fifth embodiment. FIG. 16 is a cross-sectional view of the vicinity of the cooler chamber according to the sixth embodiment. FIG. 17 is a cross-sectional view of the vicinity of the cooler chamber according to the seventh embodiment.

<Embodiment 1>
A first embodiment of the present invention will be described with reference to FIGS.
In FIG. 1, reference numeral 10 denotes a storage body composed of a heat insulating box having an opening on the front surface, which is supported by four legs 11 and has a storage chamber 12 inside. By partitioning the front of the storage chamber 12 with a partition frame 13, two upper and lower entrances 14 are formed, and a heat insulating door 15 is swingably attached to each entrance 14.

  On the upper surface of the storage body 10, a machine room 16 is configured by standing a panel 17 around. A rectangular opening 18 is formed in the ceiling wall of the storage body 10 which is the bottom surface of the machine room 16, and the unit base 21 of the refrigeration unit 20 is placed so as to close the upper surface of the opening 18. Has been. On the other hand, from the position of the lip on the lower surface on the front side of the opening 18 (the right side in FIG. 1), a wall 40 that also serves as a drain pan is stretched downwardly from the position of the lip to the back wall. A cooler chamber 23 is formed therebetween.

  As shown in detail in FIG. 2, the unit table 21 is heat-insulating, and a refrigeration device 25 including a compressor 26, an air-cooled condenser 27, and the like is placed on the upper surface thereof, while the lower surface thereof. A cooler 28 (evaporator) is attached to the rear side of the rear side in an oblique posture so as to be unitized. The cooler 28 and the refrigeration apparatus 25 are circulated and connected by a refrigerant pipe 30 that is passed through an insertion hole 29X provided in the unit base 21 to constitute a known refrigeration cycle.

  The structure of the cooler chamber 23 will be further described. The wall 40 is made of a synthetic resin such as ABS resin, and is formed in a flat rectangular dish shape as shown in FIGS. 3 and 4, but gradually from the near side (right side in FIG. 3) toward the far side. The depth has been increased. The front wall 41 </ b> X has its left and right ends left and its upper portion is cut away with a predetermined height at the lower portion, and the suction port 42 is formed by this cut portion. The upper side of the rear wall 41Y is cut out except for a predetermined height at the lower part, and the blowout port 43 is formed by this cut-out portion.

  A mounting plate 44 is formed at a position spaced from the left and right side walls 41Z at a position close to the left and right side edges on the inner bottom surface of the wall 40, and a hook 45 is formed on each upper edge. Yes. Further, on the front wall 41X side, a pair of mounting plates 46 are formed in a horizontal posture on both the left and right sides of the suction port 42.

  The wall 40 hooks the hooks 45 of the both vertical mounting plates 44 to the hooking portions 32 (see FIG. 2) provided on the left and right side surfaces of the opening 18, and both front mountings. As shown in FIG. 2, the plate 46 is attached so as to close the lower surface side of the opening 18 by applying the plate 46 to the front edge on the lower surface side of the opening 18 and fastening with the screw 47. The bottom surface of the wall 40 has a downward slope toward the inner edge (the left side in the figure), and the cooler 28 is accommodated in a slightly floating posture from the bottom surface of the wall 40. A suction port 42 is formed on the front side of the wall 40, and an outlet 43 is formed on the back side.

  As described above, the wall 40 also serves as a drain pan that receives defrosted water, and the back side is the deepest part, and the left side is slightly closer to the left than the center in the width direction of the remaining back wall 41Y. A drain port 48 is formed at the position. The drainage port 48 has a groove shape with an opening on the top surface, and is formed so as to be lowered toward the back side. The drain port 48 is fitted and connected to the upper end portion of the drainage channel 33 formed on the back wall of the storage body 10. In addition, the drainage channel 33 turns to the side wall side from the middle, and is opened in the near side of the bottom face.

  A defrosting heater 50 is mounted on the lower surface side of the cooler 28. Accordingly, a heating plate 51 corresponding to a heat conducting member is provided. The heating plate 51 is made of a stainless steel plate and has a main body portion 52 having a size capable of covering the entire lower surface of the cooler 28 as shown in FIG. On the upper surface of the main body 52, a cord-type heater 50 is wired in a zigzag manner. On the front edge and the rear edge of the main body 52, draining holes 53 each having a plurality of long holes are opened side by side. In addition, insertion holes 54X for screws 47 are formed in the left and right ends of the front edge of the main body 52, and a mounting plate 55 is raised from the rear edge of the main body 52. Similarly, an insertion hole 54Y for the screw 47 is formed in the portion.

  The main body 52 of the heating plate 51 is applied to the lower surface of the cooler 28 while inserting the heater 50 into a mounting groove 36 formed by cutting out the lower edge of the end plate 35 in the cooler 28. Then, the mounting plate 55 is applied to the lower part of the rear surface of the cooler 28 and the screw 47 is screwed, and the front edge of the main body 52 is fixed to the front edge side of the lower surface of the cooler 28 with the screw 47. It is like that. Note that the lead wire (not shown) of the heater 50 is drawn into the machine room 16 through the other insertion hole 29Y penetrating the unit base 21, and is supplied to the electrical box 37 (see FIG. 1) installed therein. Led.

  A cooling fan device 60 is mounted on the heating plate 51 described above. The fan device 60 has a structure in which a fan motor 61 is accommodated in a case 62 having a shroud, and two fan devices 60 are prepared. On the other hand, from the front edge of the main body portion 52 of the heating plate 51, a fan mounting portion 56 is formed that extends upward toward the near side. The fan mounting portion 56 is formed with two left and right circular holes 57. The fan device 60 is placed on the upper surface side so as to cover the circular hole 57, and is fixed by fixing the four corners of the case 62 with screws 47.

A short mounting portion 58 is bent from the front edge of the fan mounting portion 56 of the heating plate 51 so as to have a horizontal posture. The mounting portion 58 is applied to the lower surface of the front leg 21X fitted in the opening 18 in the unit base 21 and is fixed by fixing the left and right ends with screws 47. The lead wires 63 drawn from both fan devices 60 are drawn into the machine room 16 through the insertion holes 29Y of the unit base 21, and are similarly led to the electrical equipment box 37.
An in-compartment thermistor 64 that detects the in-compartment temperature is attached to the lower surface of the unit base 21 so as to be positioned between the cooler 28 and the fan device 60.

  The present embodiment has the above-described structure, and the vicinity of the cooler chamber 23 is assembled as follows, for example.

  The unit table 21 has the refrigeration apparatus 25 mounted on the upper surface thereof, and the cooler 28 and the internal thermistor 64 are mounted on the lower surface thereof. On the other hand, as shown in FIG. 3, a heater 50 is wired on the upper surface of the main body portion 52 of the heating plate 51, and a pair of fan devices 60 are attached to the upper surface of the fan mounting portion 56. The main body 52 of the heating plate 51 is applied to the lower surface of the cooler 28 attached to the lower surface of the unit base 21, and is fastened and fixed with screws 47. At the same time, the mounting portion 58 at the front edge of the fan mounting portion 56 is fastened and fixed to the front legs 21X of the unit base 21 with screws 47. The lead wire 63 of the fan device 60 and the lead wire of the internal thermistor 64 are drawn to the upper surface side through the insertion hole 29Y.

  On the other hand, as described above, the wall 40 hooks the hook 45 of the vertical mounting plate 44 to the latching portion 32 on the opening 18 side, and the front mounting plate 46 with the screw 47 as described above. It is stretched by. At this time, the drain port 48 is fitted into the upper end of the drain channel 33.

  Then, the cooler chamber 23 is formed by placing the unit base 21 so as to block the opening 18, and as shown in FIG. 2, the cooler 28 is placed on the lower surface inside the cooler chamber 23. The heater 50 is accommodated in a mounted state, and two fan devices 60 are attached to and mounted on the fan mounting portion 56 extended from the heating plate 51 on the front side.

  The cooling operation is performed by driving the refrigeration device 25 (compressor 26) and the fan device 60, and as shown by the arrow in FIG. 1, the air in the storage chamber 12 passes from the suction port 42 to the cooler chamber. 23, and after passing through the fan device 60, heat is exchanged while passing through the cooler 28 from the front to the rear to generate cold air, and this cold air is blown into the storage chamber 12 from the outlet 43. The inside of the storage chamber 12 is cooled by being circulated as described above. During this time, the internal temperature is detected by the internal thermistor 64, and the driving and stopping of the refrigeration apparatus 25 and the fan apparatus 60 are controlled depending on whether the detected temperature is higher or lower than the set temperature. Maintained.

  If the cooling operation is continued, frost gradually adheres to the cooler 28. Further, for the fan device 60, for example, the case 62 is cooled to the same level as the inside temperature, and the outside air that has entered when the heat insulating door 15 is opened is in a position where it can be easily touched through the suction port 42. The case 62 may be frosted depending on conditions such as a low temperature or a high temperature and humidity in the outside air.

  Therefore, a defrosting operation is appropriately performed during the cooling operation. The defrosting operation is performed by energizing and heating the heater 50 in a state where the refrigeration apparatus 25 and the fan apparatus 60 are stopped. As a result, the frost adhering to the cooler 28 is melted, and the defrosted water is dripped onto the wall 40 through the drain hole 53 provided in the main body 52 of the heating plate 51.

  On the other hand, the heat of the heater 50 is also conducted to the fan device 60 through the heating plate 51, and the frost adhering to the fan device 60 is melted by receiving the heat. After passing through 51, it is dropped on the wall 40. The defrosted water also flows with the defrosted water from the cooler 28 described above into the deepest part of the inner edge following the inclination of the bottom surface of the wall 40 and then flows into the drainage channel 33 on the back wall from the drainage port 48. The water is drained to the outside.

  During this time, a defrosting thermistor (not shown) detects the temperature of the cooler 28. When the temperature of the cooler 28 reaches a predetermined temperature, it is considered that the defrosting is completed, and the heater 50 is energized. After being shut off and after a predetermined draining time, the cooling operation is resumed.

  As described above, according to the present embodiment, the fan mounting portion 56 is provided on the heating plate 51 that is wired with the defrosting heater 50 and attached to the lower surface of the cooler 28, and the fan device 60 is provided there. Therefore, during the defrosting operation, the heat of the heater 50 is conducted to the fan device 60 through the fan mounting portion 56 of the heating plate 51, and the fan device 60 is efficiently defrosted.

  During the cooling operation, there is a concern that the cooling heat of the cooler 28 is conducted to the fan device 60 via the heating plate 51. However, during the cooling operation, the fan device 60 is driven, the fan (blade) itself is rotating, and the case 62 is also blown by air, so that it is difficult to form frost. It has been confirmed that the frost formation is not promoted more than necessary due to the influence of the cold 28 and does not promote frost formation. However, since the fan device 60 and the refrigeration device 25 are repeatedly operated and stopped depending on whether the internal temperature is higher or lower than the set temperature, the operation of the fan device 60 is stopped. It can be said that the fan stops and is likely to form frost, but the temperature of the cooler 28 increases as the refrigeration apparatus 25 stops, so that frost formation on the fan or the like is minimized.

  On the other hand, during the defrosting operation, the fan device 60 is stopped and there is no influence of the rotation of the fan or the wind. Therefore, the heat of the heater 50 is well conducted to the fan device 60 and is efficiently removed as described above. Frost is done.

  Moreover, the following advantages can be obtained by mounting the fan device 60 on the heating plate 51.

  Since the fan device 60 has a relatively large weight and is provided with a plurality of units, when the fan device 60 is mounted on the synthetic resin wall 40 as in the prior art, the fan device 60 is subjected to vibration during transportation of the cooling storage. There is also a concern that the fan device 60 and the wall 40 themselves may come off. In this regard, in this embodiment, the fan device 60 is attached to a heating plate 51 made of a stainless steel plate having high rigidity, and the heating plate 51 is firmly fixed to the unit base 21 and the cooler 28 with screws 47 on both front and rear sides. Therefore, even when subjected to vibration as described above, it is possible to prevent the fan device 60 from coming off and the lighter wall 40 side from being removed by the fan device 60 being removed.

  When the cooler 28 is frosted, impurities in the cabinet are also attached at the same time, and these impurities cannot be easily removed by a normal defrosting operation. Therefore, it is desirable to clean the cooler 28 periodically. In this embodiment, the wall 40 is not equipped with the fan device 60, and the wall 40 can be easily removed alone while loosening the screw 47 and removing the hook 45 from the hooking portion 32. As a result, the lower part of the cooler 28 is opened, and the cooler 28 can be easily cleaned.

  When installing this type of commercial cooling storage, there are cases where it is necessary to incline it through, for example, due to insufficient dimension of the entrance of the room, in which case the refrigeration unit 20 is often removed. When the fan device 60 is mounted on the wall 40 as in the prior art, since the lead wire 63 is drawn through the unit base 21, it is necessary to cut the lead wire 63 once. In this respect, in the present embodiment, the fan device 60 is mounted on the heating plate 51 constituting the refrigeration unit 20, and the lead wire 63 is also included in the refrigeration unit 20. Accordingly, the lead wire 63 is removed when the refrigeration unit 20 is removed. It is not necessary to cut off.

  Further, when the refrigeration unit 20 is removed and placed on the floor or the like, it is the heating plate 51 that contacts the floor, so there is no possibility of damaging the heater 50.

  <Embodiment 2>

  5 and 6 show Embodiment 2 of the present invention. In the second embodiment, the shape of the heating plate 51A is changed.

  In the heating plate 51A, as shown in FIG. 6, the guard portion 65 formed by opening a large number of punch holes 66 from the front edge of the mounting portion 58 is drooping with respect to the heating plate 51 shown in the first embodiment. It is bent and formed. As shown in FIG. 5, when the attachment portion 58 of the heating plate 51 </ b> A is attached to the front leg 21 </ b> X of the unit base 21, the guard portion 65 is arranged to hang down immediately inside the suction port 42 of the wall 40. It is like that.

  As described above, in the present embodiment, the foreign matter that interferes with the fan motor 61 of the fan device 60 through the suction port 42 is blocked and prevented by the guard portion 65.

  On the other hand, there is a possibility that the guard portion 65 may also form frost. However, since the guard portion 65 is formed integrally with the heating plate 51A, the heat of the heater 50 is removed via the heating plate 51A during the defrosting operation. Conducted up to 65 for efficient defrosting. Since the guard part 65 is arranged in the wall 40, all the defrost water is received by the wall 40 and is not dripped into the cabinet.

  <Embodiment 3>

  7 to 8 show Embodiment 3 of the present invention.

  In the third embodiment, the suction port 42 is notched on the front wall 41X side of the wall 40B, and the suction ports 42B are also opened at the front end portions of the left and right side walls 41Z. The lower edges of both suction ports 42B are located slightly higher than the bottom surface of the wall 40B. Further, the left and right mounting plates 44 provided with the hooks 45 are also provided with window holes 68 at positions corresponding to the inner sides of the left and right suction ports 42B.

  In the heating plate 51B, in addition to the guard portion 65 positioned immediately inside the suction port 42 on the front wall 41X side, a guard portion 65B positioned immediately inside the window holes 68 in the left and right mounting plates 44 is formed. This guard portion 65B also has a structure in which a large number of punch holes 66 are opened.

  In the third embodiment, the air inlets 42 and 42B for the internal air are formed on the three convenient surfaces of the left and right side walls 41Z in addition to the front wall 41X of the wall 40B, so that a predetermined suction area is secured. In this case, the inlet 42 facing the entrance 14 on the front surface of the storage body 10 can be narrowed. Therefore, the amount of outside air that intrudes when the heat insulating door 15 is opened and closed can be reduced, and frost formation on the guard portions 65 and 65B and the fan device 60 can be suppressed.

  Moreover, since the guard parts 65 and 65B are formed over three surfaces and have a large area, they are dispersed when exposed to outside air, and frost formation is difficult.

  Even if the guard portions 65 and 65B are frosted, since they are formed integrally with the heating plate 51B, the heat of the heater 50 is conducted to the guard portions 65 and 65B during the defrosting operation, and the fan device 60 is also efficiently restored. Defrosted. Similarly, since the guard portions 65 and 65B are arranged in the wall 40B, all the defrost water is received by the wall 40B and is not dripped into the cabinet.

  <Embodiment 4>

  A fourth embodiment of the present invention will be described with reference to FIGS.

  In this embodiment, means for heating the drain port 48C of the wall 40C is provided. Therefore, as shown in FIG. 10, a heat conducting member 70 is provided. The heat conducting member 70 is formed by pressing a metal plate, and a groove 72 is formed in the central portion of the substrate 71 in the width direction, and communicates with the groove 72 from the rear edge. A pipe portion 73 having an open upper surface is formed to extend. The pipe portion 73 can be fitted tightly with its ends aligned in the drain port 48C of the wall 40C. Locking claws 74 are formed by cutting and raising the left and right side surfaces of the pipe portion 73, and locking holes 75 for locking the locking claws 74 are formed on the left and right side surfaces of the drain port 48C. Yes. An introduction port 76 is opened on the bottom side of the left and right side surfaces on the proximal end side of the pipe portion 73. Further, a tongue-shaped draining portion 77 is bent from the tip of the pipe portion 73.

  The substrate 71 of the heat conducting member 70 is applied to the bottom surface on the rear side of the main body 52 of the heating plate 51 and bonded by spot welding or the like.

  As shown in FIG. 13, a pair of left and right suction ports 42C are opened on the front wall of the wall 40C with a gap therebetween. Further, a flange-like mounting plate 46C is formed over substantially the entire width of the upper edge of the front wall, and insertion holes 78 are opened at both left and right ends thereof. A decorative screw 47C that can be rotated by a coin C is inserted into both insertion holes 78, and is screwed into a screw hole 79 cut on the front edge side of the opening 18 on the ceiling surface of the storage body 10 to be tightened. It is supposed to be fixed.

  In addition, a magnet 81 is attached to the central portion in the width direction of the mounting plate 46C, and a reed switch 82 sensitive to the magnet 81 is embedded in a corresponding position on the ceiling surface of the storage body 10; A detecting means 80 for detecting whether or not the wall 40C is attached is configured.

  Assembly is performed as follows. The heat conducting member 70 is bonded to the heating plate 51 as described above, and is assembled as a part of the refrigeration unit 20 when the heating plate 51 to which the fan device 60 is attached is attached to the lower surface of the cooler 28. On the other hand, in the warehouse, the wall 40 </ b> C is stretched in advance, and the drain port 48 </ b> C is fitted into the drain channel 33.

  Then, when the unit base 21 of the refrigeration unit 20 is placed with the cooler 28 and the like being inserted from the opening 18 while closing the opening 18, as shown in FIG. 70 pipe parts 73 are fitted into the drain port 48C of the wall 40C from the upper side on the front side. When the pipe portion 73 is pushed in while deforming the locking claw 74 and is fitted to a predetermined position, the locking claw 74 is restored and locked in the locking hole 75 as shown in FIG. Thus, the pipe portion 73 is fixed in a state of being in close contact with the drain port 48C. At this time, the introduction port 76 of the pipe part 73 is located inside the back wall 41Y of the wall 40C.

  Similarly, the defrosting operation is performed by energizing and heating the heater 50, and the defrosting water from the cooler 28 passes through the drain holes 53 provided in the main body 52 of the heating plate 51, and the heat conducting member 70. Drops into the groove 72 and flows into the pipe portion 73 or drops onto the wall 40C from the drain hole 53, flows down to the deepest portion thereof, flows into the pipe portion 73 from the inlet 76, and drains. Drained toward 33.

  In addition, when the fan device 60 is frosted, the heat of the heater 50 is also conducted to the fan device 60 through the heating plate 51 to efficiently defrost, and similarly, the defrost water is received by the wall 40C. After that, it is discharged through the pipe portion 73.

  Here, during the defrosting operation as described above, when a small lump of water droplets or frost remains in the drain outlet 48C, that is, the pipe portion 73, the temperature inside the chamber, particularly like a freezer, when the cooling operation is resumed. However, when the temperature is maintained at about −20 ° C., the pipe portion 73 is frozen and clogged, and the defrost water may not be discharged during the next defrosting operation.

  In this respect, in this embodiment, during the defrosting operation, the heat of the heater 50 is conducted through the heating plate 51 to the pipe portion 73 of the heat conducting member 70 bonded integrally therewith to heat it. Even if there is, it is melted to eliminate clogging, and as a result, the defrost water is drained smoothly. That is, it is unnecessary to provide a special heating means to prevent clogging at the drain port 48C of the wall 40C.

  On the other hand, when removing the wall 40C for cleaning, the decorative screw 47C is first removed, but it is convenient because the coin C can be removed without using a tool as described above. At the same time, if both the locking claws 74 are bent and deformed inward from the state of FIG. 12B, the locking between the drain port 48C and the pipe portion 73 is released, so the hook 45 is removed from the hooking portion 32. Meanwhile, the wall 40C can be removed alone. The removal of the wall 40C as a single unit does not require a heater for heating the drain port 48C on the wall 40C side, and therefore there is no need to wire a lead wire to the refrigeration unit 20 side. Is also a major factor.

  As a result of removing the wall 40C as a single unit, the wall 40C itself can be easily cleaned, the lower part of the cooler 28 is opened, and the cooler 28 can be easily cleaned. Can be kept hygienic.

  Moreover, in this embodiment, the detection means 80 which detects the presence or absence of attachment of the wall 40C is equipped. For example, when cleaning is performed as described above, the power is basically turned off, but even if it is forgotten, a warning such as a buzzer is issued when the detection means 80 detects that the wall 40C has been removed. If the fan device 60 is stopped and the fan device 60 is stopped, it is possible to prevent the fan device 60 from being cleaned in the rotated state.

  <Embodiment 5>

  A fifth embodiment of the present invention will be described with reference to FIGS.

  In the fifth embodiment, the fan device 60 is arranged in parallel with the front end surface of the cooler 28 on the front side of the cooler 28. Therefore, a fan mounting portion 56D is formed from the front edge of the main body portion 52 of the heating plate 51D so as to extend forward by a predetermined dimension and then be raised at a right angle. The fan mounting portion 56D is similarly formed with two left and right circular holes 57. The fan device 60 is applied from the back side so as to cover the circular holes 57, and the four corners of the case 62 are fastened with screws 47. It is fixed by.

  The fan mounting portion 56D is formed with mounting portions 58D that are bent forward at a right angle at the upper edge and the left and right side edges. The upper mounting portion 58D is fixed to the lower surface of the unit base 21 with screws 47. On the other hand, a side panel 85 is stretched across the gap between the left and right attachment portions 58D and the side surface of the cooler 28. Thereby, the internal air drawn by the fan device 60 is reliably guided to the cooler 28.

  A fan guard 86 is provided so as to cover the front of the fan mounting portion 56D. The fan guard 86 is formed in a box shape having an upper surface and a rear surface opened by a metal plate, and a large number of punch holes 87 are opened on each surface. The left and right side plates of the fan guard 86 are fitted to the outside of the left and right attachment portions 58D, and are fastened together by screws. An internal thermistor 64 is attached to the front surface of the fan guard 86.

  The internal air inlet 42D is provided on the lower surface on the front end side of the wall 40D. Specifically, a raised portion 88 is formed in a region ahead of the position where the fan guard 86 is disposed, and a large number of slits 89 are formed side by side on the upper surface thereof.

  Other structures are the same as those in the first embodiment.

  Also in the fifth embodiment, since the fan device 60 is mounted on the fan mounting portion 56D formed integrally with the heating plate 51D, the heat of the heater 50 is similarly applied to the fan mounting portion of the heating plate 51D during the defrosting operation. It is conducted to the fan device 60 through 56D, and the fan device 60 is defrosted efficiently.

  Further, since the fan guard 86 is arranged so as to cover the front of the fan device 60, for example, when the maintenance is performed by removing the wall 40D, a foreign object is attached to the fan motor 61 of the rotating fan device 60. Are prevented from interfering with each other. Since the fan guard 86 is formed over four surfaces and has a large area, it is difficult to disperse and form frost when exposed to the outside air, and clogging is suppressed.

  Even if the fan guard 86 is frosted, the fan guard 86 is integrally coupled to the heating plate 51D, so that the heat of the heater 50 is conducted to the fan guard 86 through the heating plate 51D during the defrosting operation. Defrosted efficiently. Since the fan guard 86 is disposed in the wall 40D and behind the suction port 42D, all the defrost water is received by the wall 40D and does not drop into the cabinet.

  <Embodiment 6>

  A sixth embodiment of the present invention will be described with reference to FIG.

  The sixth embodiment shows a form in which the fan device 60 is mounted on the wall 40E. The basic structure is that a suction port 42E is opened on the front end side of the lower surface of the wall 40E, a fan device 60 is mounted on the inner surface side of the suction port 42E, and a fan guard 90 is mounted on the outer surface side. . On the other hand, for defrosting, a heater 50 is mounted in a zigzag manner on the lower surface of the cooler 28, and heat is applied on the wall 40E from below the cooler 28 to the position where the fan device 60 is disposed. A metal heat transfer plate 91 corresponding to the conductive member is laid.

  Similarly, the defrosting operation is performed by energizing the heater 50, and the defrosting water from the cooler 28 is received by the wall 40E and drained. When the defrosting thermistor 93 detects that the cooler 28 has risen to a predetermined temperature, it is considered that the defrosting has been completed, and the defrosting operation is completed.

  By the way, the fan device 60, in particular, the fan guard 90 may be frosted. Conventionally, during the defrosting operation, the heat transfer plate 91 is heated by receiving the radiant heat from the heater 50 and the cooler 28, and the frost lump that has fallen on the heat transfer plate 91 is also melted. I was trying to blur. However, since the heating of the heat transfer plate 91 depends on the radiant heat from the heater 50 and the cooler 28 as described above, the temperature rise cannot be expected so much and it may not be sufficiently melted.

  Therefore, in this embodiment, the end 50X of the heater 50 is lowered and brought into contact with the heat transfer plate 91.

  Therefore, during the defrosting operation, the heat transfer plate 91 is heated by the heater 50 directly, that is, by heat conduction, so that the temperature is sufficiently high, and the defrosting on the fan device 60 side such as the fan guard 90 can be reliably performed. it can.

  <Embodiment 7>

  FIG. 17 shows a seventh embodiment of the present invention.

  In the seventh embodiment, the basic structure is the same as that of the sixth embodiment, and the heating structure of the heat transfer plate 91 is changed.

  That is, a contact plate 95 made of a metal plate provided with a bent portion 96 on one edge side is provided, and this contact plate 95 is fixed to the back side of the fan device 60 on the heat transfer plate 91 by spot welding or the like. The tip of the bent portion 96 is in contact with the lower surface of the cooler 28.

  During the defrosting operation, the cooler 28 is heated by the heater 50. Since the heat of the cooler 28 is conducted to the heat transfer plate 91 via the contact plate 95, the heat transfer plate 91 has a sufficiently high temperature. Similarly, defrosting on the fan device 60 side such as the fan guard 90 can also be reliably performed.

  <Other embodiments>

  The present invention is not limited to the embodiments described with reference to the above description and drawings. For example, the following embodiments are also included in the technical scope of the present invention.

  (1) In Embodiment 3, instead of opening the window holes 68 in the left and right mounting plates 44 of the wall 40B, the front end side of the mounting plate 44 may be cut off.

  (2) In the third embodiment, the suction port may be provided only on one of the left and right side surfaces in addition to the front surface.

  (3) In the fourth embodiment, the heat conducting member 70 may be attached to the lower surface of the cooler 28.

  (4) In the fourth embodiment, the heat conducting member is not necessarily provided with a pipe portion that fits into the drain port, and may be provided with a contact portion that contacts the drain port.

  (5) In the seventh embodiment, the contact plate may be formed integrally by cutting and raising the wall plate.

  (6) In Embodiment 7, the contact plate may come into contact with the heater.

  (7) The heating means for defrosting is not limited to a heater, and may be a hot gas pipe through which hot gas is circulated.

  (8) The present invention is not limited to the one in which the cooler chamber is provided in the ceiling portion of the storage chamber, but can be applied to a type in which the cooler chamber is provided in another portion such as the side surface of the storage chamber. Is possible.

Claims (7)

Cooling storage consisting of:
A storage body that is partitioned by a wall to form a cooler chamber,
A cooler provided in the cooler chamber;
A cooling fan device that circulates and supplies cold air generated by heat exchange with the cooler into the storage body;
A heating device installed in the cooler to defrost the cooler;
A heat conducting member that conducts heat of the heating device to the cooling fan device.   The cooling storage according to claim 1, wherein a wall defining the cooler chamber is located below the cooler and serves also as a drain pan, and the heating device is mounted on the cooler. A heating plate is attached, and the cooling fan device is mounted on a fan mounting portion extending from the heating plate.   The cooling storage according to claim 2, wherein the wall is stretched downwardly from the front opening side of the storage body toward the back side to partition the cooler chamber, and on the back side of the cooler chamber The cooling fan device is mounted on the fan mounting portion of the heating plate provided to extend to the near side from the lower surface of the cooler in which the cooler is accommodated, and the end portion on the near side of the wall The interior air inlet is provided with a cold air outlet on the rear side, and the inlet is provided separately on the front surface of the wall and the side surface adjacent thereto.   In the cooling storage of claim 2 or 3, the heating plate is provided with a guard portion that covers the front of the cooling fan device.   The cooling storage according to any one of claims 2 to 4, wherein a drain outlet protrudes from the back end side of the drain pan and is connected to a drain channel provided on a wall surface of the storage body. The heating plate is provided with a contact portion that contacts the drain port.   The cooling storage device according to claim 1, wherein the cooling fan device is mounted on the wall with a heat transfer plate interposed therebetween, and a part of the heating device is in contact with the heat transfer plate.   The heat transfer plate is provided with a contact portion that comes into contact with the heating device or the cooler.

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