JP2008032258A - Cooling storage - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To efficiently perform assembling work including wiring of a dew-proofing heater. <P>SOLUTION: A storage box 50 is received in a main body 10 while keeping a clearance so that a cold air passage 13 is formed by the clearance. A first dew-proofing heater 40 is distributed over the whole periphery of a rear face of a front frame 38 at a main body 10 side, and a lead wire 40A is led out from a lead-out hole 43 of a ceiling wall 10A, in distributing the dew-proofing heater on a rear face of rim portions 15A of upper and lower doorways 15. Another second dew-proofing heater 80 is attached to a rear face of a front plate 71, and then a heat insulating material 77 is fitted to be assembled at a partitioning frame 70 side, and its lead wire 80A is led out from a back face of a left end portion. The partitioning frame 70 is mounted later by being fitted to a catch 62 disposed on a front opening of the main body 10, the lead wire 80A is led in the cold air passage 13 from an lead-in hole 60 formed on a flange 52 of the storage box 50, raised in the cold air passage 13, and led out from the lead-out hole 43. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a cooling storage box having a double box structure.

  This type of cooling storage is applied to, for example, a constant-temperature high-humidity storage. Specifically, a heat-conducting storage box with a front opening is also spaced apart in a main body made of a heat insulating box with a front opening. The storage chamber inside the storage box is indirectly cooled by circulating the cold air generated by the refrigeration apparatus through the cold air passage formed between the main body and the storage box. For example, at the center height position of the front opening, a heat-insulating partition frame is attached by retrofitting to form two upper and lower entrances, and a heat insulating door is attached to each entrance (for example, patents) Reference 1).

  On the other hand, a dew proof heater made of a cord heater or the like is attached to the back side of the rim of each doorway to prevent condensation. Conventionally, cooling including the wiring of the dew proof heater has been attempted. The assembly of the storage was performed as follows. This will be described with reference to FIG. 8. Only one dew-proof heater 1 is used. First, on the main body 2 side, the dew-proof heater 1 circulates and is attached to the back surface of the front frame 2A. A heat insulating material is foam-filled in the outer shell to form a heat insulating box. At this time, the lead wire 1A of the dew proof heater 1 is drawn upward from the outlet hole 3 of the top plate of the main body 2, while the dew proof heater A predetermined length in the middle of 1 is drawn from the through hole 4 on the inner peripheral surface of the front opening for the partition frame 7. From this state, the storage box 5 is accommodated in the main body 2 with an interval, and the catch 6 is attached to the center height position of the left and right side edges in the front opening.

Subsequently, the partition frame 7 is mounted. The partition frame 7 is composed of a pair of front plate 8A and rear plate 8B, both of which form a channel shape, and a heat insulating material 9 pre-formed with foamed resin. The dew-proof heater 1 drawn out from is attached to the back surface of the front plate 8A, and after the heat insulating material 9 is inserted, the rear plate 8B is fitted to assemble the partition frame 7, and both ends of the partition frame 7 are assembled. Is attached to the catch 6 to be attached later. Thereby, it will be in the state where the dewproof heater 1 was each provided in the edge part of the upper and lower entrances.
JP-A-10-246564

However, in the conventional method, when wiring the dew-proof heater on the partition frame side, the pulled-out dew-proof heater 1 is pasted while holding the front plate 8A in the air in the vicinity of the main body 2, and then continuously in the air. Since it can be attached to the main body 2 for the first time after assembling the heat insulating material 9 and the rear plate 8B in a certain state, it takes much time for work, and the dew-proof heater 1 is placed on the back surface of the front plate 8A with high accuracy. There was a problem that it was difficult to paste.
The present invention has been completed based on the above situation, and an object of the present invention is to enable efficient assembly work including wiring of a dew-proof heater.

  As means for achieving the above-mentioned object, the invention of claim 1 is characterized in that a heat-conducting storage box having a front opening is accommodated at an interval inside a main body comprising a heat insulating box having a front opening. The inside of the storage box is indirectly cooled by circulating cold air through a cold air passage formed between the main body and the storage box, and a heat insulating partition frame is attached to the front opening of the main body by retrofitting. In a cooling storehouse in which a plurality of entrances are partitioned and a dew proof heater is attached to the edge of each door, a first dew proof heater is provided on the back of the front frame constituting the lip of the front opening of the main body. And a second second dew-proof heater is wired on the back surface of the front plate of the partition frame, and the lead wire of the second dew-proof heater passes through the cold air passage and passes through the cold air passage. In a place that has been drawn out to the outside With a butterfly.

According to a second aspect of the present invention, there is provided the storage box according to the first aspect, wherein the storage box has a shape in which a flange projects from the periphery of the front opening. The cold air passage is formed between the main body and the storage box by being accommodated with a space between the main body and the peripheral surface in contact with the peripheral surface. An introduction hole through which the lead wire of the second dew-proof heater wired to the frame can be introduced toward the cold air passage is opened, and the second wall communicates with the cold air passage on the peripheral wall of the main body. It is characterized in that a lead-out hole through which the lead wire of the dew-proof heater can be led out is opened.
According to a third aspect of the present invention, in the first or second aspect of the present invention, the lead-out hole is also used to lead out the lead wire of the first dew-proof heater wired to the main body to the outside. It has the characteristics in the place.

<Invention of Claim 1>
A second dew-proof heater different from the first dew-proof heater wired on the main body side is wired in advance in the partition frame, and the partition frame is retrofitted to the main body from such a state. The lead wire of the second dew-proof heater passes through the cold air passage and is drawn out of the main body.
Since the second dew condensation heater different from the main body side is wired on the partition frame, for example, the second dew condensation heater can be attached by placing the front plate on a dedicated work table or the like. In addition, the work of attaching the dew-proof heater is simplified, and as a result, the work ranging from assembling the partition frame to retrofitting to the main body can be performed in a short time. In addition, since the second dew-proof heater can be attached with high accuracy along a predetermined path, the quality can be improved in order to prevent dew condensation.
Furthermore, since the lead wire of the second dew-proof heater is concealed in the cold air passage, it is excellent in appearance. Further, since separate dew-proof heaters are wired on the main body side and the partition frame, it is possible to select an output suitable for each according to the mounting conditions and the like.

<Invention of Claim 2>
The lead wire of the second dew-proof heater drawn out from the partition frame is introduced into the cold air passage from the introduction hole of the flange of the storage box, passes through the cold air passage, and then passes through the outlet hole penetrated into the peripheral wall of the main body. Derived externally. From this state, the partition frame is retrofitted to the main body.
<Invention of Claim 3>
The lead wire of the first dew-proof heater wired on the main body side is also led out through the lead-out hole together with the lead wire of the second dew-proof heater. Since the lead-out hole is also used, the structure of the lead-out portion of the lead wire to the outside of the main body is neatly organized.

<Embodiment>
Hereinafter, an embodiment of the present invention will be described with reference to FIGS. In the present embodiment, a vertical type constant temperature and high humidity storage is illustrated.
First, the overall structure will be described. In FIG. 1, reference numeral 10 denotes a main body, which is formed by a heat insulating box having a front opening and is supported by legs 11 disposed at four corners of the bottom surface. Inside the main body 10, a storage box 50 having a front opening is similarly stored at an interval. A cool air passage 13 is formed at the same interval, and a storage chamber 51 is formed inside the storage box 50. In the front opening of the main body 10, a heat insulating partition frame 70 is fitted sideways at the center height position to form two upper and lower entrances 15, and a heat insulating door 16 is swingably mounted on each of them. ing.

A machine room 18 surrounded by a panel is provided on the upper surface of the main body 10. A window hole 19 is opened on the bottom surface of the machine room 18, that is, on the back side of the ceiling wall 10 </ b> A of the main body 10, and a heat insulating unit base 21 is placed so as to close the window hole 19. On the upper surface of the unit table 21, a refrigeration apparatus 22 including a compressor 23, an air-cooled condenser 24, and the like is placed.
On the other hand, on the back side of the ceiling in the main body 10, a cooler chamber 26 is formed by stretching an air duct 25 that also serves as a drain pan, and a cooler 27 attached to the lower surface of the unit base 21 is accommodated. . The cooler 27 and the refrigeration apparatus 22 are circulated and connected through a refrigerant pipe to form a known refrigeration cycle. An internal fan 28 is provided on the front side of the cooler 27 in the cooler chamber 26 and faces the upper position of the cool air passage 13 described above.

When the refrigeration device 22 and the internal fan 28 are driven, air is drawn from the upper side of the cold air passage 13 into the cooler chamber 26 and passes through the cooler 27, and the cold air is generated. It blows out from the blower outlet 29 on the back side and circulates and circulates in the cold air passage 13, and the wall surface of the storage box 50 is cooled by this cold air, and the internal storage chamber 51 is indirectly cooled from the wall surface. Therefore, the inside of the storage chamber 51 is cooled to a predetermined temperature while maintaining high humidity.
In addition, although the mouth edge portion 15A of the upper and lower entrances and exits 15 can be said to be a place where condensation is likely to occur, dew-proof heaters 40 and 80 to be described later are wired on the back side of the mouth edge portion 15A in order to prevent condensation. Has been.

Next, the structure of the part for assembling the main body 10, the storage box 50, the partition frame 70 and the like including the wiring of the dew proof heaters 40 and 80 will be described in detail.
As shown in FIG. 2, the main body 10 is formed by a heat insulating box body having a vertically long rectangular shape at the front opening, and both of the heat insulating box bodies are disposed in an outer box 31 made of a metal plate such as a stainless steel plate. The box 32 is stored with a space between them, and a foamed heat insulating material 33 is filled between the boxes 31 and 32. As shown in FIG. 6, flanges 31 </ b> A and 32 </ b> A formed by bending at the respective edges of the outer box 31 and the inner box 32 are abutted with each other at the circumferential surface of the front opening 35 of the main body 10. It is formed by attaching a synthetic resin joiner 36 so as to cover.

  The front frame 38 of the outer box 31 that constitutes the main body 10, together with the front plate 71 of the partition frame 70, constitutes a lip portion 15 </ b> A in each of the upper and lower entrances 15. Therefore, the first dew-proof heater 40 made of a code heater is wired on the entire back surface of the front frame 38 of the outer box 31. On the other hand, at the corner on the left front side on the upper surface of the outer box 31, more specifically, at the inner side of the left side wall when the main body 10 is formed and at the position behind the front opening 35, the through hole 42A is formed. It is open. A through hole 42B is also opened at a position directly below the through hole 42A of the outer box 31 on the upper surface of the inner box 32.

In forming the main body 10 (heat insulating box), first, the first dew-proof heater 40 is located at the upper left as viewed from the front as shown in FIG. 5, for example, over the entire circumference of the rear surface of the front frame 38 of the outer box 31. From the corner, it is wired all around the left edge, the lower edge, the right edge and the upper edge, and is attached with tape (not shown) or the like. The lead wires 40A connected to both ends of the first dew-proof heater 40 are drawn out through the through holes 42A of the outer box 31. From this state, the inner box 32 is housed in the outer box 31, and the outer edge of the two boxes 31 and 32 is closed with a joiner 36 to form an outer shell. The main body 10 is formed by filling the outer shell body with the foam heat insulating material 33 from the state in which the holes 42A and 42B are closed. After that, by removing the heat insulating material 33 so as to connect the through holes 42A and 42B of the outer box 31 and the inner box 32, a lead-out hole 43 penetrating the ceiling wall 10A is formed.
That is, the main body 10 is wired with the first dew-proof heater 40 over the entire circumference of the back surface of the front frame 38 of the outer box 31, and the lead wire 40A is drawn upward through the lead-out hole 43 formed through the ceiling wall 10A. It will be formed as a heat-insulated box in the state of being removed.

As shown in FIG. 2, the storage box 50 is formed in a box shape with a front opening that is slightly smaller than the main body 10 by assembling a plurality of thermally conductive metal plates such as stainless steel plates. Yes. Note that only the opening edge of the bottom plate 50A is retracted from the others. A flange 52 bent outward is formed from each peripheral edge of the front opening of the storage box 50, and an end portion of each flange 52 is bent rearward to form a folded portion 53.
On the other hand, a plurality of spacers 55 </ b> A and 55 </ b> B are attached to the back surface and the inner bottom surface of the main body 10 at appropriate intervals.

The storage box 50 is housed at a predetermined interval from the inner surface of the main body 10 by applying the inner surface of the storage box 50 to the inner spacer 55A and the bottom surface to the lower spacer 55B. The part 53 faces the corresponding inner surface of the main body 10. The folded portion 53 of the lower flange 52 is fixed to the inner bottom surface of the main body 10 with a screw. The upper flange 52 is fixed to the ceiling surface by the mounting member 57 in a state where the closing member 56 is sandwiched between the folded portion 53 and the ceiling surface of the main body 10. Similarly, the left and right flanges 52 have catches 62 (see FIG. 5) for attaching a partition frame 70 to be described later with the closing member 56 sandwiched between the folded portion 53 and the left and right inner surfaces of the main body 10. ) To the left and right inner surfaces.
In addition, a corner cover 59 is attached and closed in a gap formed between the corners of the front opening of the storage box 50 at the four corners of the front opening of the main body 10.

When the storage box 50 is stored in the main body 10 as described above, the cold air passage 13 whose front side is closed is formed between the main body 10 and the storage box 50. Here, the lead-out hole 43 formed in the ceiling wall 10 </ b> A of the main body 10 is in communication with the cold air passage 13.
An introduction hole 60 communicating with the internal cold air passage 13 is opened at a central height position of the left flange 52 in the storage box 50, that is, at a mounting position of the catch 62. The above-described catch 62 is made of a metal such as a stainless steel plate, and is formed in a box shape having an inner surface and a front surface that are generally open as shown in FIG. It is fixed with a screw 63 over the flange 52, and can be attached while being prevented from coming off by pushing the end of the partition frame 70 from the front to a predetermined position. A notch 65 is formed in the rear plate 64 screwed to the flange 52 of the catch 62, and the introduction hole 60 is opened at a position corresponding to the notch 65.

As shown in FIG. 3, the partition frame 70 includes a pair of a front plate 71, a rear plate 74, and a heat insulating material 77. The front plate 71 is formed of a metal plate such as a stainless steel plate, and is formed in a channel shape having side plates 72 on both upper and lower edges. This front plate 71 is a part of the mouth edge 15A of the entrance 15 described above. It is configured. On the other hand, the rear plate 74 is formed in a channel shape that is slightly larger than the front plate 71 by a synthetic resin material, and can be elastically fitted so as to close the opening on the rear surface of the front plate 71. An escape hole 75 is cut out at one end of the rear plate 74 (left end as viewed from the front).
The heat insulating material 77 is preliminarily molded from foamed resin, and is formed in a square material shape that fits comfortably inside the front plate 71 described above. On one end face of the heat insulating material 77, two upper and lower relief grooves 78 facing in the front-rear direction are formed.

  In addition to the first dew-proof heater 40 on the main body 10 side, a second dew-proof heater 80 made of a code heater is wired in the partition frame 70. Specifically, first, the second dew proof heater 80 is wired from the upper left end position when viewed from the front side of the front plate 71 to the right end along the upper edge, and then folded back into a hairpin shape. It is wired to the left end along the lower edge, and is attached with a tape or the like (not shown). The lead wire 80A connected to both ends of the second dew-proof heater 80 is drawn from the left opening surface. The lead wire 80 </ b> A of the second dew-proof heater 80 has a length sufficient to reach the upper surface of the main body 10 from the central height position of the main body 10.

When the second dew-proof heater 80 is attached to the front plate 71, the heat insulating material 77 is fitted into the front plate 71. At this time, the base side of the lead wire 80 </ b> A is fitted in the escape groove 78 of the heat insulating material 77, and the lead wire 80 </ b> A is pulled out to the rear surface side of the heat insulating material 77. Finally, the rear plate 74 is fitted from the rear so as to cover the rear opening of the front plate 71 and the upper and lower side plates 72. As shown in FIG. 4, the lead wire 80 </ b> A is pulled out to the rear of the rear plate 74 through the escape hole 75 of the rear plate 74.
When the partition frame 70 is assembled as described above, the second dew-proof heater 80 is wired in parallel at the position along the upper edge and the lower edge on the back surface of the front plate 71, and a long lead wire 80A is provided. Then, the rear end is pulled out from the left end position.

  An example of the entire assembly procedure is as follows. As described above, the main body 10 composed of the heat insulating box body has the foam heat insulating material 33 from the state where the first dew-proof heater 40 is wired and pasted over the entire circumference of the back surface of the front frame 38 of the outer box 31. It is formed by filling and solidifying. After the heat insulating box is manufactured, a lead-out hole 43 is formed in the ceiling wall 10A, and the lead wire 40A of the first dew-proof heater 40 is drawn upward from the lead-out hole 43. Further, spacers 55 </ b> A and 55 </ b> B are attached to the inner wall of the main body 10.

Next, the storage box 50 is accommodated in the main body 10 with a predetermined interval through the spacers 55A and 55B. On the other hand, as described above, the partition frame 70 is assembled in a state where the second dew-proof heater 80 is wired on the back surface of the front plate 71 and the lead wire 80A is drawn out from the rear surface of the left end portion. Therefore, an auxiliary string (not shown) is further tied to the tip of the lead wire 80A, and when the storage box 50 is stored in the main body 10, the auxiliary string is introduced into the introduction hole 60 opened in the left flange 52. From the lead-out hole 43 of the ceiling wall 10A of the main body 10 toward the upper side.
When the storage box 50 is stored to the normal position, as described above, the catch 62 and the attachment member 57 are used to fix the storage box 50 in a state where the periphery of the front opening of the storage chamber 51 is closed. The introduction hole 60 is located in the notch 65 of the catch 62 and opens to the front side. This partition frame 70 is preferably placed on an appropriate base or installation surface in front of the main body 10, and therefore it is necessary to secure the length of the auxiliary string to such an extent that the state can be maintained.

  Subsequently, the partition frame 70 is attached over the left and right catches 62 provided at the center height position of the front opening of the main body 10. For this purpose, as shown in FIG. 5, the auxiliary string tied to the lead wire 80 </ b> A of the second dew-proof heater 80 is pulled up as much as possible, and the right end of the partition frame 70 is first fitted into the right catch 62. Subsequently, while the lead wire 80A is pushed into the back side from the introduction hole 60, the left end portion is fitted into the left catch 62 and fixed. After that, the auxiliary string is further pulled so that the lead wire 80A enters the cold air passage 13 from the introduction hole 60 and then changes its direction upward, and protrudes upward by a predetermined length from the outlet hole 43 of the ceiling wall 10A of the main body 10. Remove the auxiliary strap.

As described above, the first dew-proof heater 40 or the second dew-proof heater 80 is wired over the entire periphery of the back surface of the mouth edge 15A with respect to the upper and lower doors 15 formed in the front opening of the main body 10. . In addition, when the machine room 18 is formed on the upper surface of the main body 10 and the electrical box is installed, the lead wire 80A of the second dew-proof heater 80 is connected to the first dew-proof heater on the main body 10 side drawn out from the lead-out hole 43. The 40 lead wires 40A are also connected to the electrical box.
During operation of the refrigerator, the first dew-proof heater 40 and the second dew-proof heater 80 are energized, and the rim portion 15A of the upper and lower doors 15 is heated, so that dew condensation can occur on the rim portion 15A. Is prevented.

  According to this embodiment, since the second dew-proof heater 80 different from the main body 10 side is wired to the partition frame 70, for example, the front plate 71 is placed on a dedicated work table or the like. 2 Since the dew-proof heater 80 can be stuck, the sticking work of the dew-proof heater is simplified, and as a result, the work from the assembly of the partition frame 70 to the retrofitting to the main body 10 can be performed in a short time. Moreover, since the 2nd dew-proof heater 80 can be affixed with high precision along the defined path | route, the quality improvement is aimed at aiming at prevention of dew condensation. Furthermore, since the lead wire 80A of the second dew-proof heater 80 is concealed in the cold air passage 13, it is excellent in appearance.

The first dew-proof heater 40 on the main body 10 side is wired while being embedded in the heat insulating material 33, whereas the second dew-proof heater 80 on the partition frame 70 side is preliminarily formed heat insulating material. Since the wiring 77 is pressed, the heat transfer efficiency with respect to the front frame 38 or the front plate 71 is slightly different.
In this respect, in this embodiment, since the first dew-proof heater 40 and the second dew-proof heater 80 can be individually energized, the output of the main body 10 can be adjusted by individually adjusting the output in consideration of the heat transfer efficiency. The front frame 38 and the front plate 71 of the partition frame 70 can be heated to substantially the same temperature. In other words, the rim portion 15A can be heated to substantially the same temperature over the entire circumference of each entrance / exit 15. It is possible to prevent condensation evenly.
The lead wire 40A of the first dew-proof heater 40 on the main body 10 side and the lead wire 80A of the second dew-proof heater 80 on the partition frame 70 side are led out to the outside through the common lead-out hole 43. The structure of the lead-out portion of the lead wires 40A and 80A to the outside of the main body 10 is neatly organized.

<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, and further, within the scope not departing from the gist of the invention other than the following. Various modifications can be made.
(1) The heat insulating partition frame may have a structure formed by filling and solidifying a foam heat insulating material in the outer shell, like the main body.
(2) The partition frame may have a shape in which a plurality of vertical and horizontal frames are assembled in a cross or the like according to the number and arrangement of the entrances and exits of the constant temperature and high humidity storage.

(3) The lead wires of the dew prevention heaters on the main body side and the partition frame side may be separately drawn out of the cabinet through individual lead-out holes.
(4) Further, the formation position of the lead-out hole may be a peripheral wall other than the ceiling wall according to the arrangement position of the machine room or the like.
(5) The storage box may be divided into a plurality.
(6) The present invention is not limited to the constant-temperature and high-humidity storage exemplified in the above embodiment, but the main point is a double box structure in which storage boxes are accommodated in a main body made of a heat-insulating box, and the front surface of the main body. It can be widely applied to all cooling storages in which the opening is partitioned by a heat insulating partition frame.

The longitudinal cross-sectional view of the constant temperature high humidity store which concerns on one Embodiment of this invention An exploded perspective view showing a state before the main body and the storage box are assembled. Exploded perspective view of partition frame Perspective view after assembly of partition frame Perspective view of the state before installing the partition frame Partial sectional view Perspective view of the state after the partition frame is mounted Disassembled perspective view of conventional example

Explanation of symbols

  DESCRIPTION OF SYMBOLS 10 ... Main body 10A ... Ceiling wall 13 ... Cold air passage 15 ... Entrance / exit 15A ... Port edge part (of entrance / exit 15) 33 ... Heat insulating material 38 ... Front frame 40 ... 1st dew-proof heater 40A ... Lead wire 43 ... Lead-out hole 50 ... Storage Box 51 ... Storage chamber 52 ... Flange 60 ... Introduction hole 62 ... Catch 70 ... Partition frame 71 ... Front plate 77 ... Insulating material 80 ... Second dew-proof heater 80A ... Lead wire

Claims (3)

Inside the main body consisting of a heat insulating box with a front opening, a thermally conductive storage box with a front opening is accommodated at an interval, and cool air is passed through a cool air passage formed between the main body and the storage box. The inside of the storage box is indirectly cooled by circulating, and a heat-insulating partition frame is attached to the front opening of the main body by retrofitting to form a plurality of entrances, and a dew-proof heater is provided at the edge of each entrance / exit In the cooling storage with
A first dew-proof heater is circulated on the back surface of the front frame constituting the rim of the front opening of the main body, and another second dew heater is provided on the back surface of the front plate of the partition frame. The cooling storage, wherein the lead wire of the second dew-proof heater is drawn out to the outside of the main body through the cold air passage. The storage box has a shape in which a flange is formed over the periphery of the front opening, and the storage box is spaced from the main body in a state where the protruding end of the flange is in contact with the inner peripheral surface of the main body. By being opened and housed, the cold air passage is formed between the main body and the storage box,
The flange has an introduction hole through which the lead wire of the second dew-proof heater wired to the partition frame can be introduced toward the cold air passage, and the cold air passage is formed in the peripheral wall of the main body. The cooling storage according to claim 1, wherein a lead-out hole communicating with the lead-out hole through which the lead wire of the second dew-proof heater can be led out is opened. The cooling storage according to claim 2, wherein the lead-out hole is also used to lead out the lead wire of the first dew-proof heater wired to the main body to the outside.

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