JP5743483B2 - Insulation cabinet - Google Patents

Description

  Embodiments of the present invention relate to an insulated cabinet.

  In recent years, for example, household refrigerators tend to have a large capacity, and this is realized by reducing the thickness of the peripheral wall of the heat insulating cabinet of the refrigerator. In this case, it is necessary to ensure that the cabinet has sufficient heat insulation performance even with a small peripheral wall. For this reason, in addition to filling the peripheral wall of the cabinet with foam insulation, vacuum insulation panels are used. In addition, there is also one in which the peripheral wall of the cabinet is filled with only a vacuum heat insulation panel (see, for example, Patent Documents 1 and 2).

  The vacuum insulation panel is made of, for example, glass wool, which is a thin fiberglass cotton material, matted to form a core material. The core material is inserted into a gas barrier container made of aluminum foil and a synthetic resin laminate film, and the interior is This is a panel that keeps the inside of the container in a vacuum-reduced state by evacuating and closing the opening, and it has a thin and low thermal conductivity (heat insulation). By using this, high insulation performance can be achieved. Can be obtained.

Japanese Patent No. 2728318 JP-A-6-147744

  Among the above-mentioned conventional products, those using foam insulation and a vacuum insulation panel on the peripheral wall of the cabinet are inferior in thermal insulation performance to those using only the vacuum insulation panel, so that the peripheral wall thickness of the cabinet is slightly increased. Inevitably, the effect of expanding the internal volume of the cabinet cannot be obtained sufficiently.

  On the other hand, what filled the peripheral wall of the cabinet only with the vacuum heat insulation panel has higher heat insulation performance than that combined with the foam heat insulating material and the vacuum heat insulation panel, and accordingly, the peripheral wall thickness of the cabinet can be made sufficiently small, The effect of expanding the internal volume of the cabinet can be sufficiently obtained. However, this case has a problem that the rigidity of the cabinet cannot be sufficiently obtained.

  In view of this, a heat insulating cabinet that can sufficiently obtain heat insulating performance and rigidity is provided.

In the heat insulating cabinet of the present embodiment, the ceiling wall portion, the bottom wall portion, the left side wall portion, the right side wall portion, and the back wall portion, both or one of the ceiling wall portion and the bottom wall portion, respectively, The outer shell and the inner shell are filled with a vacuum heat insulating panel and a foam heat insulating material filled inside or outside thereof, and the left side wall portion, the right side wall portion, and the back wall portion are respectively formed on the outer shell. The space between the inner shell and the inner shell is filled with a vacuum heat insulating panel adhered to both inner surfaces of the outer shell and the inner shell .

Longitudinal side view showing one embodiment Longitudinal front view Front perspective view Exploded perspective view Enlarged view of part V in Figure 1 Enlarged view of the VI part of Fig. 2 with parts omitted Enlarged view of part VII in FIG. An enlarged view of part VIII of FIG. Fig. 2 is a cross-sectional view of the inner part along the line IX-IX in Fig. 2 with a part omitted. Perspective view from the front showing each wall part with only vacuum insulation panel and filled foam insulation Perspective view from the rear showing each wall part only with vacuum insulation panel and filled foam insulation Enlarged view of XII section in Fig. 11 Perspective view from the rear Partial enlarged cross-sectional view along line XIV-XIV in FIG.

Hereinafter, an embodiment will be described with reference to the drawings.
First, FIG. 3 shows a heat insulation cabinet, especially a heat insulation cabinet 1 of a refrigerator. In this case, as shown in FIG. 4, the heat insulation cabinet 1 includes a peripheral wall, a ceiling wall portion 1a, and a bottom wall portion 1b. The left side wall portion 1c, the right side wall portion 1d, and the back wall portion 1e are separately formed and assembled to form a rectangular parallelepiped having a front surface opened as shown in FIG. It has a box shape.

  The wall portions 1a to 1e will be described in detail. As shown in FIG. 1, the ceiling wall portion 1a includes a vacuum heat insulating panel 4 and an inner side (inner shell 3) between the outer shell 2 and the inner shell 3 thereof. The bottom wall portion 1b is also formed between the outer shell 6 and the inner shell 7 with the vacuum heat insulating panels 8, 9, 10 and the same. It is configured by filling with the foam heat insulating material 5 filled in the inner side (inner shell 7 side).

On the other hand, as shown in FIG. 2, the left side wall portion 1c is configured by filling the space between the outer shell 11 and the inner shell 12 with only the vacuum heat insulating panel 13, and the right side wall portion 1d is also formed. Further, as shown in FIG. 2, the space between the outer shell 14 and the inner shell 15 is filled with only the vacuum heat insulation panel 16, and the back wall portion 1e is also formed as shown in FIG. The space between the outer shell 17 and the inner shell 18 is filled with only the vacuum heat insulation panel 19.
In this case, each outer shell 2, 6, 11, 14, 17 is made of metal such as a steel plate, and each inner shell 3, 7, 12, 15, 18 is made of plastic, for example.

  Further, the ceiling wall portion 1a has a flat wall shape, and therefore the outer shell 2 and the inner shell 3 thereof are also substantially flat, and in this case, the vacuum heat insulating panel 4 is formed on the inner surface of the outer shell 2. Is pasted. However, the vacuum heat insulation panel 4 is slightly smaller than the outer shell 2, leaving a portion where the vacuum heat insulation panel 4 is not attached to the entire front, rear, left and right circumferences. Further, the outer shell 2 and the inner shell 3 are joined to each other at the front edge portion, and at the rear edge portion, the inner shell 3 is formed with a diagonal portion 20 shown in FIG. In the edge portion and the right edge portion, inclined portions 21 and 22 shown in FIG. 6 are formed in the inner shell 3 over the entire length in the front and rear directions, and both are separated from the vacuum heat insulating panel 4.

  On the other hand, as shown in FIG. 1, the bottom wall portion 1b includes a lower horizontal portion 23, a vertical portion 24 rising from the rear edge portion of the lower horizontal portion 23, and a rear portion from the upper edge portion of the vertical portion 24. A machine wall 26 is formed having a stepped wall shape having an upper horizontal portion 25 extending in the rear, and a compressor of a refrigeration cycle is positioned behind the upper and lower shells 6 and 7. In this case, vacuum heat insulating panels 8, 9, and 10 are attached to the inner surface of the outer shell 6 separately from the lower horizontal portion 23, the vertical portion 24, and the upper horizontal portion 25, respectively. ing.

  However, the vacuum heat insulation panel 8 is slightly smaller than the lower horizontal portion 23, the vacuum heat insulation panel 9 is slightly smaller than the vertical portion 24, and the vacuum heat insulation panel 10 is smaller than the upper horizontal portion 25. And the lower end edge of the vacuum heat insulation panel 9 and between the upper end edge of the vacuum heat insulation panel 9 and the front end edge of the vacuum heat insulation panel 10 are slightly separated from each other. The part where the vacuum heat insulation panel 10 is not stuck behind is left relatively large.

  Further, the outer shell 6 and the inner shell 7 are joined to each other at the front face portions, and in the corner portion facing between the rear edge portion of the vacuum heat insulation panel 8 and the lower edge portion of the vacuum heat insulation panel 9, A slanted portion 27 shown in FIG. 7 is formed on the inner shell 7 over the entire length on the left and right sides to be separated from the vacuum heat insulating panels 8 and 9, and between the upper edge of the vacuum heat insulating panel 9 and the front edge of the vacuum heat insulating panel 10. 7 is also formed in the outer shell 6 over the entire length on the left and right sides so as to be separated from the vacuum heat insulating panels 9 and 10.

  Further, at the rear edge portion, a slanted portion 29 shown in FIG. 7 is formed on the inner shell 7 over the entire length on the left and right sides so as to be separated from the vacuum heat insulating panel 10, and at the left edge portion and the right edge portion, the inner shell 7 is formed. The oblique portions 30 and 31 shown in FIG. 8 are formed over the entire length of the front and rear, and are separated from the vacuum heat insulating panels 8 to 10.

  As shown in FIG. 2, the left side wall portion 1 c has a flat wall shape. Accordingly, the outer shell 11 and the inner shell 12 thereof are also substantially flat, and the outer shell 11 and the inner shell 12 are formed. The vacuum heat insulation panel 13 is stuck on both inner surfaces. However, as shown in FIGS. 6, 8, and 9, the vacuum heat insulation panel 13 is larger than the inner shell 12 and smaller than the outer shell 11, and the vacuum heat insulation panel is located above and below and behind the outer shell 11. The part which 13 does not stick is left. Further, the outer shell 11 and the inner shell 12 are joined to each other at the front edge, and the upper and lower edges and the rear edge of the outer shell 11 are folded at a right angle to the inside. Bent portions 32, 33, and 34 are formed, and a bent portion 35 is formed at the rear edge portion of the inner shell 12, which is also a substantially right-angled joint portion.

  As shown in FIG. 2, the right side wall portion 1d also has a flat wall shape. Accordingly, the outer shell 14 and the inner shell 15 thereof also have a substantially flat plate shape. The vacuum heat insulation panel 16 is stuck on both inner surfaces. However, as shown in FIGS. 6, 8, and 9, the vacuum heat insulation panel 16 is larger than the inner shell 15 and smaller than the outer shell 14. The part which 16 does not stick is left. The outer shell 14 and the inner shell 15 are joined to each other at the front edge, and the upper and lower edges and the rear edge of the outer shell 14 are folded at a right angle to the inside. Bent portions 36, 37, and 38 are formed, and a bent portion 39 that is a substantially right-angled joint portion is formed at the rear edge portion of the inner shell 15.

  As shown in FIG. 1, the back wall portion 1 e also has a flat wall shape. Accordingly, the outer shell 17 and the inner shell 18 also have a substantially flat plate shape, and the outer shell 17 and the inner shell 18. The vacuum heat insulation panel 19 is stuck on both inner surfaces. However, as shown in FIGS. 5, 7, and 9, the vacuum heat insulation panel 19 is larger than the inner shell 18 and smaller than the outer shell 17, and the vacuum heat insulation panel is located above and below and behind the outer shell 17. The part which 19 does not stick is left. In addition, bent portions 40 and 41 are formed on the upper and lower edges of the outer shell 17 as joints at right angles to the inside.

  Based on the above configuration, the left wall 1c and the right wall 1d are assembled to the back wall 1e. As shown in FIG. 9, this assembling is performed on the left and right edges 17a, 17b of the outer shell 17 of the back wall 1e, and the bent portions 34 of the outer shells 11, 14 of the left wall 1c and the right wall 1d. , 38 are overlapped via a soft tape 42, which is a simple sealing material, and are fastened and coupled by a plurality of screws 43 or the like, and the left side wall 1c is attached to the left and right edges 18a, 18b of the inner shell 18 of the back wall 1e. In addition, the bent portions 35 and 39 of the inner shells 12 and 15 of the right side wall portion 1d are overlapped and fastened by a plurality of screws or the like (not shown).

  Next, the ceiling wall portion 1a and the bottom wall portion 1b are assembled to the composition of the back wall portion 1e, the left side wall 1c, and the right side wall portion 1d. In the case of the ceiling wall portion 1a with respect to the back wall portion 1e, this assembly is performed as shown in FIG. 5, in which the rear edge portion 2a of the outer shell 2 of the ceiling wall portion 1a is connected to the bent portion 40 of the outer shell 17 of the back wall portion 1e. The end portion of the inclined portion 20 of the inner shell 3 is overlapped with the upper edge portion 18c of the inner shell 18 of the inner wall portion 1e via the sealing material 44, and a plurality of screws. This is done by tightening and joining with 43 or the like.

  Further, in the case of the ceiling wall portion 1a with respect to the left side wall 1c and the right side wall portion 1d, as shown in FIG. 6, the left and right side edges 2b and 2c of the outer shell 2 of the ceiling wall portion 1a The end portions of the slanted portions 21 and 22 of the inner shell 3 are joined to the bent portions 32 and 36 of the outer shells 11 and 14 of 1d by a plurality of screws or the like (not shown). This is done by overlapping the upper edge portions 12a and 15a of the inner shells 12 and 15 of 1d with a sealing material 44 and tightening them with a plurality of screws 43 or the like.

  In the case of the bottom wall portion 1b with respect to the back wall portion 1e, as shown in FIG. 7, the rear edge portion 6a of the outer shell 6 of the bottom wall portion 1b is overlapped with the bent portion 41 of the outer shell 17 of the back wall portion 1e. The end portion of the slanted portion 29 of the inner shell 7 is overlapped with the lower edge portion 18d of the inner shell 18 of the inner wall portion 1e via the sealing material 44 and tightened with the plurality of screws 43 or the like. It is done by combining.

  In the case of the bottom wall portion 1b with respect to the left side wall 1c and the right side wall portion 1d, as shown in FIG. 8, the left and right side edges 6b and 6c of the outer shell 6 of the bottom wall portion 1b are connected to the left side wall 1c and the right side wall portion 1d. The folded portions 33 and 37 of the outer shells 11 and 14 are overlapped with each other by a plurality of screws (not shown) and the like, and the end portions of the inclined portions 30 and 31 of the inner shell 7 are connected to the left wall 1c and the right wall 1d. This is done by overlapping the sealing material 44 on the lower edge portions 12b and 15b of the inner shells 12 and 15 and fastening them with a plurality of screws 43 or the like.

Thereafter, the space S between the inner shell 3 in the upper wall 1a and the space S ₁ between the vacuum insulation panel 4, the inner shell 7 and the vacuum insulation panel 8, 9 and 10 in the bottom wall 1b ₂ , each of the foam heat insulating materials 5 is injected in the state of a stock solution and foamed and filled. The foam heat insulating material 5 is, for example, foamed polyurethane, and FIGS. 5 and 7 schematically show the state of the injection.

  That is, the injection of the foam heat insulating material 5 in the ceiling wall portion 1a is performed from the back of the ceiling wall portion 1a and the bottom wall portion 1b in this case by the injection head H of the injection machine. An inlet 45 is formed in advance in the lower part of the outer shell 17 of the back wall part 1e corresponding to the rear part of 1a and the upper part of the outer shell 17 of the back wall part 1e corresponding to the rear part of the bottom wall part 1b. That is, the inlet 45 for injecting the foam heat insulating material 5 is the ceiling wall portion 1a which is a wall portion filled with the vacuum heat insulating panel 4 and the foam heat insulating material 5, the vacuum heat insulating panels 8, 9, 10 and the foam heat insulating material 5. It is formed so as to face the bottom wall portion 1b which is a wall portion filled with.

  In addition, in order to form the inlet 45 facing the wall part filled with the vacuum heat insulating panel and the foam heat insulating material, the intermediate part of the plane part such as the center part of the inner shell 3 of the ceiling wall part 1a, and You may make it form in the intermediate part of a plane part similarly like the part which faces the vacuum heat insulation panel 9 of the inner shell 7 of the bottom wall part 1b.

In the ceiling wall portion 1a which is filled with this way the vacuum insulation panel 4 described above and a foam insulating material 5, as shown in FIGS. 5 and 6, the thickness t ₁ of the foam insulation 5 vacuum insulation panel is smaller than the thickness t ₂ of the 4, also in the bottom wall 1b which is filled with a vacuum insulating panel 8, 9 and 10 and a foam insulating material 5, as shown in FIGS. 7 and 8, The thickness t ₃ of the foam heat insulating material 5 is smaller than the thickness t ₄ of the vacuum heat insulating panels 8, 9, 10.

In this case, the foam heat insulating material 5 is formed between the inner shell 3 and the vacuum heat insulating panel 4 in the ceiling wall portion 1a filled with the vacuum heat insulating panel 4 and the foam heat insulating material 5, as shown in FIG. Between the space S ₁ between the vacuum insulation panel 4 and the gaps g ₁ and g ₂ between the edges of the vacuum insulation panels 13 and 16 of the left and right side wall portions 1c and 1d, FIG. As shown, filling is performed from the space S ₁ between the inner shell 3 and the vacuum heat insulation panel 4 to the gap g ₃ between the edge portions of the vacuum heat insulation panel 4 and the vacuum heat insulation panel 19 of the back wall portion 1e. Yes.

On the other hand, in the bottom wall portion 1b filled with the vacuum heat insulating panels 8, 9, 10 and the foam heat insulating material 5, the foam heat insulating material 5 has an inner shell 7 and a vacuum heat insulating panel 8, as shown in FIG. from the space S ₂ between the 9 and 10, over the gap g _4, g ₅ between edges mutually with vacuum insulation panels 8, 9 and 10 the left and right side wall portions 1c, and 1d vacuum insulation panels 13 and 16 of together are filled, as shown in FIG. 7, from the space S ₂ between the inner shell 7 and the vacuum insulation panels 8, 9 and 10, the vacuum insulation panel 19 of the vacuum insulation panel 10 and the rear wall 1e The gap g ₆ between the end edges and the gaps g ₇ and g ₈ between the end edges of the vacuum heat insulating panels 8, 9 and 10 are filled.

Furthermore, spaces S _{3 to} S ₁₀ are formed in the portions between the edge portions of the vacuum heat insulating panels 4, 8 to _10, 13, 16, and 19, respectively, by oblique portions 20 to 22 and 27 to 31. The spaces S _{3 to} S ₁₀ are also filled with the foam heat insulating material 5.

In addition, from the ceiling wall portion 1a filled with the above-described vacuum heat insulating panel 4 and the foam heat insulating material 5, and the bottom wall portion 1b filled with the vacuum heat insulating panels 8, 9, 10 and the foam heat insulating material 5. 10 and 11, as shown in FIGS. 10 and 11, the portion between the edge portions of the vacuum heat insulating panels 13 and 19 in the left wall portion 1c and the back wall portion 1e, and the right wall portion 1d and the back wall portion 1e. The foam heat insulating material 5 is filled over the upper and lower portions C ₁ and C ₂ of the portions between the edge portions of the vacuum heat insulating panels 16 and 19, respectively. For this purpose, the left side wall portion 1c and the right side wall portion 1d or the back wall portion 1e are not shown in the figure, but are formed with inclined portions similar to the inclined portions 20 to 22 and 27 to 31. .

In addition, the foam heat insulating material 5 is also filled in the front surface portions of the ceiling wall portion 1a and the bottom wall portion 1b.
10 and 11, each wall portion is composed of only the vacuum heat insulating panels 4, 8 to 10, 13, 16, and 19 and the filled foam heat insulating material 5 (respective outer shells and inner shells are omitted). Represent).

  Further, FIG. 11 and FIG. 12 show a conductive wire 46 incorporated in the heat insulation cabinet 1, a refrigeration cycle connection pipe 47, and a drain pipe 48 for defrosting water discharge. In this case, the portion between the edge portions is filled with the foam heat insulating material. In this case, between the edge portions of the vacuum heat insulation panel 10 of the bottom wall portion 1b and the vacuum heat insulation panel 19 of the back wall portion 1e. The portions filled with the foamed heat insulating material 5 are formed in advance, and the foamed heat insulating material 5 is filled with the foamed heat insulating material 5 by filling the foamed heat insulating material 5 thereafter.

FIG. 13 shows a heat radiating pipe 49 which is a part of the condenser of the refrigeration cycle. The heat radiating pipe 49 is disposed on the left side wall 1c, the right side wall 1d, and the back wall 1e. ing. Specifically, as shown in FIG. 14, inwardly recessed strips 50 are formed in the outer shells 11, 14, and 17 of the left side wall 1 c, the right side wall 1 d, and the back wall 1 e, respectively. A heat radiating pipe 49 is disposed between the vacuum heat insulating panels 13, 16, and 19 in the strip 50.
FIG. 13 also shows doors 51, 52, and 53 provided to open and close the opening on the front surface of the heat insulation cabinet 1 manufactured as described above for each room such as a refrigerator room, an ice making room, and a freezer room. ing.

  Thus, the heat insulation cabinet 1 of this embodiment has the ceiling wall part 1a, the bottom wall part 1b, the left side wall part 1c, the right side wall part 1d, and the back wall part 1e. A space between the outer shell 2 and the inner shell 3 is filled with a vacuum heat insulating panel 5 and a foam heat insulating material 5 filled inside thereof, and the bottom wall 1b is formed between the outer shell 6 and the inner shell 7. The space is filled with the vacuum heat insulating panels 8, 9, 10 and the foam heat insulating material 5 filled therein. Further, the left side wall portion 1c is configured by filling the space between the outer shell 11 and the inner shell 12 with a vacuum heat insulating panel 13, and the right side wall portion 1d is formed between the outer shell 14 and the inner shell 15 with a vacuum heat insulating panel 16. The back wall portion 1e is configured by filling the space between the outer shell 17 and the inner shell 18 with a vacuum heat insulating panel 19.

  Among the above configurations, the ceiling wall portion 1 a and the bottom wall portion 1 b have a small total cross-sectional area in the heat insulating cabinet 1. In contrast, the left side wall 1c, the right side wall 1d, and the back wall 1e have a large total cross-sectional area in the heat insulating cabinet 1. Among these, the left side wall portion 1c, the right side wall portion 1d, and the back wall portion 1e having a large total cross-sectional area are configured by filling only the vacuum heat insulating panels 13, 16, 19 having excellent heat insulating performance, respectively. The heat insulation performance as the heat insulation cabinet 1 as a whole can be sufficiently obtained. Therefore, it is not necessary to increase the thickness of the peripheral wall of the heat insulation cabinet 1, and the effect of expanding the internal volume of the heat insulation cabinet 1 can be sufficiently obtained. In particular, since the internal volume of the heat insulation cabinet 1 can be expanded in the left and right and depth directions, the internal volume in a direction that can be easily reached by the user can be increased, and the usability can be improved.

On the other hand, since the ceiling wall part 1a and the back wall part 1e use the foam heat insulating material 5 and the vacuum heat insulating panels 4 and 8 to 10 together, the rigidity of the heat insulating cabinet 1 can be sufficiently obtained.
Thus, according to this embodiment, it is possible to provide a heat insulation cabinet 1 that can sufficiently obtain heat insulation performance and rigidity.

  Further, in the present embodiment, the inlet 45 into which the foam heat insulating material 5 is injected faces the ceiling wall portion 1a and the bottom wall portion 1b, which are walls filled with the vacuum heat insulating panel and the foam heat insulating material. Forming. Thereby, injection | pouring of the foam heat insulating material 5 can be performed efficiently.

Further, in this embodiment, the ceiling wall portion 1a is a wall portion which is filled with a vacuum insulating panel and a foam insulating material, the thickness t ₂ of the thickness t ₁ of the foam insulation 5 vacuum insulation panels 4 The thickness t ₃ of the foam heat insulating material 5 is the thickness of the vacuum heat insulating panels 8, 9, 10 in the bottom wall portion 1 b, which is a wall portion filled with the vacuum heat insulating panel and the foam heat insulating material. It is smaller than t _4. Thereby, also in these ceiling wall part 1a and bottom wall part 1b, heat insulation performance can fully be acquired, obtaining rigidity sufficiently.

In addition, in the present embodiment, the space between the inner shell 3 and the vacuum heat insulation panel 4 in the ceiling wall portion 1 a filled with the foam heat insulation material 5 with the vacuum heat insulation panel 4 and the foam heat insulation material 5. From S ₁ to the vacuum insulation panel 4 and the gaps g ₁ and g ₂ between the edge portions of the left and right side wall portions 1c and 1d and the vacuum insulation panels 13 and 16, the inner shell 3 and the vacuum insulation are filled. Filling is performed from the space S ₁ between the panel 4 and the gap g ₃ between the edge portions of the vacuum heat insulation panel 4 and the vacuum heat insulation panel 19 of the back wall portion 1e. Further, in the bottom wall 1b which is filled with a vacuum insulating panel 8, 9 and 10 and a foam insulating material 5, a space S ₂ between the inner shell 7 and the vacuum insulation panels 8, 9 and 10, the vacuum The heat insulating panels 8, 9 and 10 are filled over the gaps g ₄ and g ₅ between the edges of the left and right side wall portions 1c and 1d, and the inner shell 7 and the vacuum heat insulating panel. From the space S ₂ between 8, 9 and 10, the gap g ₆ between the edge portions of the vacuum heat insulation panel 10 and the vacuum heat insulation panel 19 of the back wall portion 1e, and the vacuum heat insulation panels 8, 9 and 10 The gaps g ₇ and g ₈ between the end edges are filled.

Thereby, a seal for preventing the occurrence of condensation due to the intrusion of outside air into the gaps between the edges of each vacuum insulation panel is filled with the foam insulation between the edges of the vacuum insulation panels on each wall. The material 5 can be performed simultaneously and effectively. Moreover, in this case, the fluidity of the foam heat insulating material 5 that fills the gaps between the edge portions of each vacuum heat insulating panel can be secured in the spaces S ₁ and S ₂ between the vacuum heat insulating panels of each wall, In particular, since the spaces S ₁ and S ₂ can be easily expanded, the number of the injection ports 45 for injecting the foamed heat insulating material 5 is small for each wall, for example, only one is provided, and the injection head H of the injection machine is also provided. For example, it is only necessary to provide one by one. Thus, the equipment necessary for the injection of the foam heat insulating material 5 can be simplified, and the equipment cost can be reduced.

In addition, in this embodiment, spaces S _{3 to} S ₁₀ are formed by the inclined portions 20 to 22 and 27 to 31 in the portions between the edge portions of the vacuum heat insulating panels 4, 8 to ₁₀ , 13, 16, and 19. The spaces S _{3 to} S ₁₀ are filled with the foam heat insulating material 5. As a result, the gaps g _{1 to} g ₈ between the edge portions of the vacuum heat insulating panels 4, _{8 to 10,} 13, 16 and 19 can be more reliably sealed, and the fluidity of the foam heat insulating material 5 can be better secured. In addition, the insulation cabinet 1 can be secured with high rigidity.

  Further, the wiring of the conductive wire 46 and the piping of the connecting pipe 47 and the drain pipe 48 are filled with the foam heat insulating material between the edges of the vacuum heat insulating panel (the vacuum heat insulating panel 10 and the bottom wall 1b). The portion between the end edges of the back wall portion 1e and the vacuum heat insulation panel 19 is filled with the foamed heat insulating material 5). Thereby, the normally difficult seal of the part through which these wirings and pipes penetrate can be made with the foam heat insulating material 5 filled in the gap between the edge portions of the vacuum heat insulating panel, and a more reliable seal can be achieved.

Furthermore, in this embodiment, the ceiling wall part 1a filled with the vacuum heat insulating panel 4 and the foam heat insulating material 5, and the bottom wall filled with the vacuum heat insulating panels 8, 9, 10 and the foam heat insulating material 5. From the part 1b, the part between the edge parts of the vacuum heat insulation panels 13 and 19 in the left wall part 1c and the back wall part 1e, and the vacuum heat insulation panels 16 and 19 in the right wall part 1d and the back wall part 1e. The foam heat insulating material 5 is filled in a portion C ₁ and C ₂ between the end edges.

  Thereby, the clearance gap between the edge parts of the vacuum heat insulation panels 13 and 19 in the left side wall part 1c and the back wall part 1e, and the edge of the vacuum heat insulation panels 16 and 19 in the right side wall part 1d and the back wall part 1e. It is possible to more reliably seal the gap between the parts with the foamed heat insulating material 5, and to shorten the seal with the soft tape 42 in the same part.

  In the present embodiment, the heat radiating pipe 49 is disposed on the left side wall 1c, the right side wall 1d, and the back wall 1e. Thereby, the concern of the left side wall part 1c, the right side wall part 1d, and the back wall part 1e comprised by filling between the outer shell and the inner shell with the vacuum heat insulation panel can be eliminated.

  That is, the vacuum heat insulating panels 4, 8 to 10, 13, 16, 19 have the situation that the heat insulating performance is lowered when the degree of vacuum is deteriorated, but the ceiling wall portion using the vacuum heat insulating panel 4 and the foam heat insulating material 5 in combination. Even if the heat insulation performance of the vacuum heat insulation panel 4 is lowered, the foam heat insulation material 5 reduces the decrease in the heat insulation performance of the bottom wall portion 1b using 1a, the vacuum heat insulation panels 8 to 10 and the foam heat insulation material 5 together. On the other hand, the left side wall portion 1c, the right side wall portion 1d and the back wall portion 1e which do not use the foam heat insulating material 5 together (use only the vacuum heat insulating panels 13, 16, 19) are heat insulating performances of the vacuum heat insulating panels 13, 16, 19 If it decreases, the heat insulation performance as a wall part will fall as it is, and there exists a possibility that the temperature of a wall surface will fall significantly and dew condensation may generate | occur | produce.

  On the other hand, in this embodiment, the heat radiating pipe 49 is arrange | positioned in the left side wall part 1c which does not use the foam heat insulating material 5 together, the right side wall part 1d, and the back wall part 1e. Thereby, it is possible to suppress the occurrence of condensation when the heat insulating performance of the vacuum heat insulating panel 4 is deteriorated by the heat radiation of the heat radiating pipe 49.

The heat insulation cabinet 1 demonstrated above is not limited only to the said embodiment, In the range which does not deviate from a summary, it can change suitably and can implement.
As one of them, the heat radiating pipe 49 may be provided not on all of the left side wall 1c, the right side wall 1d, and the back wall 1e, but on any one or two of them.
Moreover, the foam heat insulating material 5 of the ceiling wall part 1a and the bottom wall part 1b attaches the vacuum heat insulation panels 4 and 8-10 to the outer surface of the inner shells 3 and 7 together, so that the vacuum heat insulation panels 4 and 8 to You may make it fill each 10 outer side (outer shell 2,6 side).

Further, the foam heat insulating material 5 and the vacuum heat insulating panel may be used in combination only in either the ceiling wall portion 1a or the bottom wall portion 1b.
And heat insulation cabinet 1 itself is not restricted to a refrigerator, It can be used as a thermostat cabinet, a freezer showcase, and other thermostat cabinets.

  In addition, although the embodiment of the present invention has been described, this embodiment is presented as an example and is not intended to limit the scope of the invention. The novel embodiment can be implemented in various other forms, and various omissions, replacements, and changes can be made without departing from the scope of the invention. This embodiment and its modifications are included in the scope and gist of the invention, and are included in the invention described in the claims and the equivalents thereof.

In the drawings, 1 is a heat insulating cabinet, 1a is a ceiling wall portion, 1b is a bottom wall portion, 1c is a left wall portion, 1d is a right wall portion, 1e is a back wall portion, 2, 6, 11, 14, and 17 are outer shells. 3, 7, 12, 15, 18 are inner shells, 4, 8 to 10, 13, 16, 19 are vacuum insulation panels, 5 is foam insulation, 20 to 22, 27 to 31 are oblique portions, 45 is Inlet, 46 is a conductive wire, 47 is a connecting pipe, 48 is a drain pipe, 49 is a heat radiating pipe, t ₁ and t ₃ are the thickness of the foam insulation 5, and t ₂ and t ₄ are the thickness of the vacuum insulation panel 4. , G _{1 to} g ₈ are gaps, S _{1 to} S ₁₀ are spaces, and C ₁ and C ₂ are part of the portion between the end edges of the vacuum heat insulating panel.

Claims (8)

It has a ceiling wall part, a bottom wall part, a left side wall part, a right side wall part, and a back wall part, of which both or one of the ceiling wall part and the bottom wall part is between each outer shell and inner shell. was constructed fills in the vacuum insulation panel and this inside or filled in the outer foam insulation, the left wall, right wall, and a back wall portion, the outer between the respective outer shell and the inner shell A heat insulation cabinet, comprising a vacuum heat insulation panel adhered to both inner surfaces of the shell and the inner shell .   2. The heat insulation cabinet according to claim 1, wherein the injection port into which the foam heat insulating material is injected is formed facing a wall portion filled with a vacuum heat insulating panel and the foam heat insulating material.   The heat insulation cabinet according to claim 1 or 2, wherein a thickness of the foam heat insulating material is smaller than a thickness of the vacuum heat insulating panel in the wall portion filled with the vacuum heat insulating panel and the foam heat insulating material. The foam insulation is filled from the space between the outer shell or inner shell and the vacuum insulation panel in the wall filled with the vacuum insulation panel and the foam insulation to the gap between the edges of the vacuum insulation panel. The heat insulation cabinet as described in any one of Claim 1 to 3 characterized by the above-mentioned.   5. The heat insulation cabinet according to claim 4, wherein a space formed by an oblique portion is formed in a portion between the edge portions of the vacuum heat insulation panel, and the space is filled with a foam heat insulating material.   6. The heat insulation cabinet according to claim 4 or 5, wherein the wiring and the piping are formed in a portion filled with a foam heat insulating material between the edge portions of the vacuum heat insulation panel. From the wall filled with the vacuum insulation panel and the foam insulation material, the portion between the edges of the vacuum insulation panel on the left side wall and the back wall, and the vacuum insulation panel on the right side wall and the back wall The heat insulation cabinet according to any one of claims 1 to 6, wherein a foamed heat insulating material is filled in a part of each portion between the end edges of each other. The heat-insulating cabinet according to any one of claims 1 to 7, wherein a heat radiating pipe is disposed on all or one of the left side wall, the right side wall, and the back wall. .

Images