JP6478609B2 - Insulated box and refrigerator having the same - Google Patents

Description

  The present invention relates to a heat insulation box and a refrigerator including the same.

  Generally, a refrigerator etc. is equipped with a heat insulation box. The heat insulation box usually has a double structure of an inner case constituting an inner wall and an outer case constituting an outer wall, and a heat insulating material is disposed between the inner case and the outer case. When producing a heat insulation box, as described in Japanese Patent Application Laid-Open No. 60-283 (Patent Document 1) and Japanese Patent Application Laid-Open No. 59-109762 (Patent Document 2), an inner case and an outer case are provided. It is conceivable to adopt a method of forming a foamed heat insulating material so as to fill the gap between the inner case and the outer case by injecting, foaming and solidifying a foamable synthetic resin such as urethane foam between them. .

  An opening where a user takes things in and out of a refrigerator or the like is called a "front door" (maguchi). In the step of forming the foamed heat insulating material, first, the inner box is manufactured, and the outer box is disposed so as to cover the inner box with the front facing downward, with the inner box facing downwards. The relative positional relationship between the outer box and the inner box is fixed by some means. In this state, the back of the outer box is facing upward. A foamable synthetic resin such as urethane foam is injected from an injection port provided in advance on the back surface of the outer case or the like. An example of performing such injection is described in Japanese Patent Application Laid-Open No. 59-5039 (Patent Document 3).

  Although it is sufficient if one insulation box comprises only one storage room, an insulation box comprising a plurality of storage rooms having different temperatures is also required. The refrigerator is required to have a plurality of storage rooms, such as a refrigerator, a freezer and a vegetable compartment. In this case, a member serving as a wall (hereinafter referred to as "partition wall") is required to separate different storage rooms included in one heat insulation box. Since the temperature required for each storage room is different, the partition wall is also required to have heat insulation.

  As described in JP-A-2014-43987 (Patent Document 4), the partition wall is manufactured as a separate part from the inner box and attached by inserting it into the inner box from the front side. Be A flow through hole of the foam insulation is provided not only in the space between the outer box and the inner box but also in the inside of the partition wall so that the foam insulation material extends, and when the expandable synthetic resin is injected from the inlet of the outer box. A foam insulation is formed including the inside of a partition wall.

  The foamable synthetic resin is liquid immediately after injection. A flow hole for the liquid foamable synthetic resin to flow from the space between the outer box and the inner box to the inside of the partition wall is provided on the side surface of the partition wall. Since the filling operation is performed with the front facing downward, the level of the foamable synthetic resin advances from the bottom to the top in the space between the outer box and the inner box as well as in the inner space of the partition wall. It becomes. Finally, it is planned that the whole space between the outer box and the inner box and the inner space of the partition wall be filled with the foam insulation. Since the foamable synthetic resin should flow into the inside of the partition wall as smoothly as possible while being liquid before it is converted to foam, the through holes provided on the side surfaces of the partition wall should be somewhat large holes Provided.

Japanese Patent Application Laid-Open No. 60-283 JP-A-59-109762 Japanese Patent Application Laid-Open No. 59-5039 JP 2014-43987 A

  In fact, in the outer box of the heat insulation box after forming the foam insulation, a slight dent may occur at a position corresponding to the side of the partition wall. Even slight dents may be visible to the user due to the light reflection on the surface of the outer casing, which may deteriorate the appearance.

  Then, an object of this invention is to provide the heat insulation box which can prevent that a dent arises in an outer case as much as possible, and a refrigerator provided with this.

  In order to achieve the above object, the heat insulation box according to the present invention is disposed on an outer case having an outer case main opening opening at one side and the inside of the outer case, on the same side as the outer case main opening. An inner box having an open inner box main opening and the inner box being fitted and arranged inside the inner box so as to extend from the inner box main opening in the depth direction of the inner box And a partition wall for dividing the inner space of the inner case, and a first foamed heat insulating material portion is disposed in the space between the outer case and the inner case by being filled with the foamed heat insulating material, A partition wall shell having a hollow structure and a second foam insulation material portion filled in the inner space of the partition wall shell, the partition wall shell being in contact with the inner box side wall surface And the outer case has an outer case insulation inlet for injecting the foam insulation from the outside. The inner box has an inner box heat insulating material flow passage through which the first foam heat insulating material portion and the second foam heat insulating material portion can be communicated with each other at a portion in contact with the side surface of the partition wall outer shell The wall outer shell side surface has a partition wall heat insulating material inlet communicating with the inner box heat insulating material circulation port, and a flow resistance member is provided at the partition wall heat insulating material inlet.

  According to the present invention, since the flow resistance member is provided at the partition wall heat insulating material inlet, suction due to the density difference of the heat insulating material immediately after injection for forming the first foam heat insulating material portion and the second foam heat insulating material portion A phenomenon can be suppressed and it can prevent that a dent arises in an outer case as much as possible.

It is a perspective view of the refrigerator in Embodiment 1 and 10 based on this invention. It is an exploded view of the heat insulation box in Embodiment 1 based on this invention. It is a perspective view of the heat insulation box in Embodiment 1 based on this invention. It is a perspective view from which the appearance of the back of the heat insulation box in Embodiment 1 based on this invention can be seen. It is a side view of the heat insulation box in Embodiment 1 based on this invention. It is a perspective view of the partition wall with which the heat insulation box in Embodiment 1 and 9 based on this invention is provided. It is a side view of the partition wall with which the heat insulation box in Embodiment 1 and 9 based on this invention is provided. It is arrow sectional drawing regarding the VIII-VIII line in FIG. It is arrow sectional drawing regarding the IX-IX line in FIG. It is arrow sectional drawing regarding XX in FIG. It is an enlarged view of the partition wall insulating material entrance vicinity of the partition wall with which the heat insulation box in Embodiment 1 based on this invention is equipped. FIG. 6 is an explanatory view of a state immediately after the start of injection of the foamable synthetic resin, as viewed on the cross section IX-IX in FIG. 5; FIG. 6 is an explanatory view of a state immediately after the start of injection of the foamable synthetic resin, as viewed on the cross section XX in FIG. 5. FIG. 6 is an explanatory view of a state after a while since the start of injection of the foamable synthetic resin, viewed in a cross section taken along line IX-IX in FIG. 5; It is explanatory drawing of the place which saw the state after passing for a while after starting injection | pouring of a foamable synthetic resin by the XX cross section in FIG. It is explanatory drawing of the place which saw the state after passing for a while after starting injection | pouring of a foamable synthetic resin in the IX-IX cross section in FIG. It is explanatory drawing of the place which saw the state after passing for a while after starting injection | pouring of a foamable synthetic resin by the XX cross section in FIG. It is explanatory drawing of the behavior in the lower right part in FIG. 17 at the time of a foamable synthetic resin solidifying as a heat insulating material. It is an enlarged view of the partition wall heat insulating material inlet vicinity of the partition wall with which the heat insulation box in Embodiment 2 based on this invention is provided. It is arrow sectional drawing regarding the XX-XX line in FIG. It is an enlarged view of the partition wall heat insulating material entrance vicinity of the partition wall with which the heat insulation box in Embodiment 3 based on this invention is provided. It is an enlarged view of the partition wall entrance material vicinity of the partition wall with which the heat insulation box in Embodiment 4 based on this invention is provided. FIG. 20 is an enlarged view of the vicinity of a partition wall heat insulating material inlet of a partition wall provided in a heat insulating box according to a fifth embodiment of the present invention. FIG. 21 is an enlarged view of the vicinity of a partition wall heat insulating material inlet of a partition wall provided in a heat insulating box according to a sixth embodiment of the present invention. It is a fragmentary sectional view of the partition wall with which the heat insulation box in Embodiment 7 based on this invention is equipped. It is a fragmentary sectional view of the partition wall with which the 1st modification of the heat insulation box in Embodiment 7 based on this invention is provided. It is a fragmentary sectional view of the partition wall with which the 2nd modification of the heat insulation box in a 7th embodiment based on the present invention is provided. It is a fragmentary sectional view of the partition wall with which the 3rd modification of the heat insulation box in Embodiment 7 based on this invention is provided. It is a fragmentary sectional view of the heat insulation box in Embodiment 8 based on this invention. It is explanatory drawing of a mode that the foamable synthetic resin inject | poured inside the outer case in order to produce the heat insulation box in Embodiment 8 based on this invention flows in in a partition wall. It is explanatory drawing of a mode that the foamable synthetic resin inject | poured in order to produce the heat insulation box in Embodiment 8 based on this invention is foaming in the interior space of a partition wall.

  In order to investigate the cause of the slight dent which arises in an outer case, when the inventors removed the outer case, it turned out that a dent has arisen in a foam insulating material in the position corresponding to this dent. The present inventors who investigated the cause of the dent which arises in this foaming heat insulating material considered that the suction phenomenon by a density difference has arisen, when an insulating material hardens. The inventors have made the present invention, thinking that if this suction phenomenon can be prevented, it is possible to prevent a slight dent in the outer box.

  The heat insulation box referred to here is not limited to one used in a refrigerator, but hereinafter, the heat insulation box used in a refrigerator (including one having a freezer compartment) will be described as an example. Generally, a refrigerator comprises an inner box and an outer box, and a heat insulating material is disposed between the inner box and the outer box. The interior of the inner box is divided into a plurality of storage rooms by partition walls.

Embodiment 1
(Constitution)
With reference to FIGS. 1-11, the heat insulation box and refrigerator in Embodiment 1 based on this invention are demonstrated. FIG. 1 shows the appearance of the refrigerator 201 in the present embodiment. The refrigerator 201 includes a heat insulating box 101 having a plurality of storage rooms, and lids 4a, 4b and 4c for opening and closing the storage rooms. The refrigerator 201 further includes a cooling circuit, a control device, and the like (not shown). The refrigerator 201 has a plurality of storage rooms. A plurality of storage rooms are, for example, a refrigerator compartment, a freezer compartment and a vegetable compartment in order from the top. However, the type, number and arrangement of storage rooms are not limited to this.

  An exploded view of the heat insulation box 101 is shown in FIG. The heat insulation box body 101 includes an outer case 2, an inner case 1, and a partition wall 3. The partition wall 3 is fitted inside the inner case 1 as shown by the arrow 91 in FIG. The inner case 1 is fitted inside the outer case 2 as shown by the arrow 92. The outer case 2 is mainly formed of a steel plate. The place where these were assembled is shown in FIG. FIG. 4 shows the heat insulation box 101 in this state as viewed obliquely from behind. In FIG. 4, the back surface 2b of the outer case 2 is visible. Furthermore, the side view of the heat insulation box 101 in this state is shown in FIG. In FIG. 5, the inner case 1 and the partition wall 3 in a state of being stored in the outer case 2 are seen through in a broken line.

  Here, although the heat insulation box 101 shall not include the lids 4a, 4b and 4c, the one after the lid is attached may be called a heat insulation box.

  The heat insulation box 101 according to the present embodiment is disposed inside the outer case 2 having the outer case main opening 2a opened at one side and the outer case 2 and is open at the same side as the outer case main opening 2a. The inner box 1 having the box main opening 1 a and the inner box 1 being fitted and arranged so as to extend from the inner box main opening 1 a in the depth direction of the inner box 1 And a partition wall 3 for dividing the internal space.

  In the example shown in FIG. 2, two partition walls 3 are fitted to one inner box 1, but this is merely an example. The number of partition walls 3 fitted into one inner box 1 may be other than two, and the position at which the partition walls 3 are fitted is not limited to that illustrated.

  In the example shown in FIG. 4, although the two outer case heat insulating material inlets 12 were provided in the lower part of the back surface 2b, this is an example to the last. The number, shape, and position of the outer box heat insulator inlets 12 are not limited to those shown in FIG. The outer box heat insulating material inlet 12 is not necessarily provided only in the lower part of the refrigerator, and may be provided, for example, in the upper part, or may be provided in both the upper and lower parts.

  FIG. 6 shows the partition wall 3 shown in FIG. 2, FIG. 3 and FIG. 5 taken out alone. Here, the structure of the partition wall 3 before the heat insulating material is formed is shown. The place which looked at the partition wall 3 from the side is shown in FIG. The arrow sectional view regarding the VIII-VIII line in FIG. 7 is shown in FIG. The arrow sectional view regarding the IX-IX line in FIG. 5 is shown in FIG. 9, and the arrow sectional view regarding the XX in FIG. 5 is shown in FIG.

  As shown in FIG. 9, the first foamed heat insulating material portion 5 is disposed in the space between the outer case 2 and the inner case 1 by being filled with the foamed heat insulating material. As shown in FIG. 10, the partition wall 3 includes a partition wall shell 31 having a hollow structure, and a second foamed heat insulating material portion 6 filled in the internal space 33 of the partition wall shell 31. As shown in FIG. 6, the partition outer shell 31 has a partition outer shell side surface 32 in contact with the inner box 1. As shown in FIG. 4, the outer case 2 has an outer case insulation material inlet 12 for injecting the foam insulation material from the outside. As shown in FIG. 2 and FIG. 10, the inner case 1 is an inner case which can make the 1st foaming heat-insulation material part 5 and the 2nd foaming heat-insulation material part 6 connect in the part which touches partition wall shell side 32. A heat insulating material flow port 11 is provided. As shown in FIGS. 2, 6 and 7, the partition wall outer shell side surface 32 has a partition wall heat insulating material inlet 15 communicating with the inner box heat insulating material flow passage 11. As shown in FIG. 7, the partition wall heat insulating material inlet 15 is provided with an opening area dividing member 17 as a flow resistance member.

  FIG. 11 shows an enlarged view of the vicinity of the partition wall heat insulating material inlet 15 shown in FIG. 7. The partition wall heat insulating material inlet 15 provided on the partition wall outer shell side surface 32 is divided by the opening area dividing member 17 into two, an opening 15 a and an opening 15 b.

(Action / effect)
In the present embodiment, it is possible to prevent the recess of the foam heat insulating material which affects the appearance of the outer case 2 as much as possible while realizing the filling of the foam heat insulating material into the internal space 33 of the partition wall 3 sufficiently satisfactorily. it can. In order to clarify the reason, the method of forming the foam insulation is described in detail below.

  In order to form the first foamed heat insulating material portion 5 and the second foamed heat insulating material portion 6 shown in FIG. 10, an operation of injecting a liquid foamable synthetic resin into each space is performed. In this work, as shown in FIGS. 3 to 5, a combination of the inner box 1, the outer box 2 and the partition wall 3 is prepared, and the combination is arranged so that the frontage of the combination is directed downward. It takes place. Since the frontage points downward, the inner box main opening 1a and the outer box main opening 2a face downward. In this state, the outer box heat insulating material inlet 12 shown in FIG. 4 faces upward. In this state, a liquid foamable synthetic resin is injected from the outer casing heat insulating material inlet 12 toward the inside of the outer casing 2.

  First, in a state immediately after the start of the injection of the liquid foamable synthetic resin, FIG. 12 shows a portion as viewed in cross section IX-IX in FIG. 5 and FIG. 13 shows a portion as viewed in cross section X-X in FIG. Show. In the cross section IX-IX, as shown in FIG. 12, the foamable synthetic resin 7 starts to accumulate in the space between the outer case 2 and the inner case 1, and the liquid level of the foamable synthetic resin 7 continues to rise. On the other hand, in the XX cross section, as shown in FIG. 13, the foamable synthetic resin 7 which has started to accumulate in the space between the outer box 2 and the inner box 1 is further partitioned through the inner box heat insulating material flow passage 11 It flows into the interior space 33 of the dividing wall 3 through the wall insulation inlet 15. Although the behavior of the foamable synthetic resin 7 is schematically illustrated as the behavior of the liquid in FIGS. 12 and 13 for the convenience of explanation, in fact, at this point, part of the foamable synthetic resin 7 is It may have already started foaming. Since the foamed part also has fluidity, it flows lower as in the liquid.

  Further, the state after a slight time has passed is shown in FIG. 14 as viewed on the IX-IX cross section in FIG. 5 and in FIG. 15 as viewed on the XX cross section in FIG. In the space between the outer case 2 and the inner case 1 as well as in the inner space 33 of the partition wall 3, the liquid level of the foamable synthetic resin 7 continues to rise, and foaming also proceeds. The space between the outer box 2 and the inner box 1 with respect to the inner space 33 of the partition wall 3 is communicated not only via the inner box insulator flow passage 11 and the partition wall insulator inlet 15, but also other It communicates also by the partition wall heat insulating material auxiliary inlet 16 provided in the position. Therefore, as shown in FIG. 15, if the liquid level of the foamable synthetic resin 7 rises in the space between the outer case 2 and the inner case 1, the internal space 33 of the partition wall 3 also follows this. As a result, the liquid level of the foamable synthetic resin 7 rises.

  Further, a state after a slight time has passed is shown in FIG. 16 as viewed on the IX-IX cross section in FIG. 5 and in FIG. 17 as viewed on the XX cross section in FIG. As shown in FIG. 16, in the space between the outer case 2 and the inner case 1, the foamable synthetic resin 7 reaches the upper part while foaming, and the flows from the left and right merge. As shown in FIG. 17, the liquid level of the foamable synthetic resin 7 rises in the internal space 33 of the partition wall 3 so as to follow this, and the foaming progresses. Thus, the internal space 33 of the partition wall 3 is substantially filled with the foamable synthetic resin 7.

  After almost all the space to be filled with the heat insulating material is filled with the foamable synthetic resin 7 in progress of foaming, the foamable synthetic resin 7 is solidified as the first foamed heat insulating material portion 5 and the second foamed heat insulating material portion 6 . As shown in FIG. 10, the first foamed heat insulating material portion 5 is formed in the space between the outer case 2 and the inner case 1, and the second foamed heat insulating material portion 6 is formed in the inner space 33 of the partition wall 3. Although formed, in fact, the latter has a lower density than the former.

  FIG. 18 shows an enlarged view of the lower right portion in FIG. 17 when the foamable synthetic resin 7 which has been foamed is solidified as a heat insulating material. Since the second foamed heat insulating material portion 6 has a lower density, the first foamed heat insulating material passes through the inner box heat insulating material flow passage 11 and the partition wall heat insulating material inlet 15 as shown by the arrow 95 just before solidification. A flow of the expandable synthetic resin 7 from the portion 5 to the second foamed heat insulating material portion 6 occurs.

  Conventionally, when the heat insulating material is sucked into the internal space 33 of the partition wall 3 by this flow, a recess is generated in the first foamed heat insulating material portion 5 at the portion 19. The portion 19 is a portion at a position where the inner box heat insulating material flow port 11 and the partition wall heat insulating material inlet 15 are projected to the outer box 2. As a result of the depression at the portion 19 of the first foam insulation material portion 5, the portion 20 of the outer box 2 is pulled inward from the pressure difference to cause a slight depression. In the past, this slight dent caused the appearance deterioration. However, in the present embodiment, since the opening area dividing member 17 is provided as the flow resistance member at the partition wall heat insulating material inlet 15, as shown by the arrow 95n in FIG. At least a portion of the flow that is sucked in is blocked. Therefore, it is possible to suppress the extent to which the recess 19 occurs in the portion 19. Therefore, it is possible to reduce the degree to which the recess 20 occurs in the portion 20 of the outer box 2.

  The shape of the flow resistance member is not limited to this, but it is preferable that the flow resistance member is a member crossing the partition wall heat insulating material inlet 15. By adopting this configuration, although it is a simple member, the inflow of the foamable synthetic resin into the partition wall at the time of injection is not significantly inhibited, and a difference in density when the foamable synthetic resin during foaming solidifies The flow can be moderately inhibited, and the occurrence of dents in the outer box can be prevented as much as possible.

  In the present embodiment, as shown in FIG. 11, by providing the opening area dividing member 17 as the flow resistance member, the partition wall heat insulating material inlet 15 is divided into two, the opening 15a and the opening 15b. However, this is merely an example, and various modifications can be considered.

Second Embodiment
With reference to FIG. 19, the heat insulation box in Embodiment 2 based on this invention is demonstrated. The basic configuration of the heat insulation box in the present embodiment is the same as that of the heat insulation box 101 described in the first embodiment, but differs in the following points.

  In the present embodiment, as shown in FIG. 19, the partition wall heat insulating material inlet 15 is provided with two crossing members, that is, two opening area dividing members 17. Thereby, the partition wall heat insulating material inlet 15 is divided into three openings 15c, 15d and 15e.

  The arrow sectional view regarding the XX-XX line in FIG. 19 is shown in FIG. The partition wall shell 31 is a plate-like member, and the upper side, that is, the inner side of the partition wall shell 31 in FIG. In the partition wall heat insulating material inlet 15, two opening area dividing members 17 are provided so as to be integrated with the partition wall shell 31 with the same material as the partition wall shell 31. Such a configuration may be employed in the present embodiment. A rod-like member formed by using a part of the partition wall shell 31 as described above may be used as the flow resistance member.

Also in the present embodiment, the same effect as that of the first embodiment can be obtained.
Third Embodiment
With reference to FIG. 21, the heat insulation box in Embodiment 3 based on this invention is demonstrated. The basic configuration of the heat insulation box in the present embodiment is the same as that of the heat insulation box 101 described in the first embodiment, but differs in the following points.

  In the present embodiment, as shown in FIG. 21, the partition wall heat insulating material inlet 15 is divided into two large parts and present as an opening group 15s and an opening group 15t at places separated from each other. Each of the openings 17 is further divided by providing 17.

Also in this embodiment, the same effects as those of the previous embodiments can be obtained.
Embodiment 4
The heat insulation box in the fourth embodiment according to the present invention will be described with reference to FIG. The basic configuration of the heat insulation box in the present embodiment is the same as that of the heat insulation box 101 described in the first embodiment, but differs in the following points.

  In the example shown in FIG. 11 in the first embodiment, the opening area dividing member 17 is a rod-like member parallel to the lateral direction of the partition wall heat insulating material inlet 15, but the opening area dividing member 17 is arranged It is not limited to this direction. In the present embodiment, as shown in FIG. 22, the opening area dividing member 17 as a flow resistance member is a rod-like member parallel to the longitudinal direction of the partition wall heat insulating material inlet 15. Thereby, the partition wall heat insulating material inlet 15 is divided into the opening 15 f and the opening 15 g. Here, an example in which the opening area dividing member 17 is divided into two by one opening area dividing member 17 parallel to the longitudinal direction of the partition wall heat insulating material inlet 15 is shown, but three or more by the two or more opening area dividing members 17 It may be divided.

Also in this embodiment, the same effects as those of the previous embodiments can be obtained.
Fifth Embodiment
With reference to FIG. 23, the heat insulation box in Embodiment 5 based on this invention is demonstrated. The basic configuration of the heat insulation box in the present embodiment is the same as that of the heat insulation box 101 described in the first embodiment, but differs in the following points.

  In the present embodiment, as shown in FIG. 23, the opening area dividing member 17 is a cruciform member. The partition insulation inlet 15 is divided into four small openings by the opening area dividing member 17.

Also in this embodiment, the same effects as those of the previous embodiments can be obtained.
Sixth Embodiment
With reference to FIG. 24, the heat insulation box in Embodiment 6 based on this invention is demonstrated. The basic configuration of the heat insulation box in the present embodiment is the same as that of the heat insulation box 101 described in the first embodiment, but differs in the following points.

  In the present embodiment, as shown in FIG. 24, the opening area dividing member 17 is a grid-like member. The partition insulation inlet 15 is divided into a large number of small openings by the opening area dividing member 17.

Also in this embodiment, the same effects as those of the previous embodiments can be obtained.
Seventh Embodiment
(Constitution)
The heat insulation box in the seventh embodiment according to the present invention will be described with reference to FIG.

  The heat insulation box in the present embodiment is the same as the heat insulation box described in the first embodiment with respect to the overall structure, but the following points are compared with the heat insulation box 101 described in the first embodiment. It is different.

  When viewed in the same cross section as FIG. 20 shown in the second embodiment, the heat insulation box in the present embodiment has a structure as shown in FIG.

  In this embodiment, a crossing member provided as a flow resistance member, ie, a member crossing the partition wall heat insulating material inlet 15 is a wall-like member extending from the partition wall shell 31 toward the inside of the partition wall 3 It is 17i.

(Action / effect)
In the present embodiment, since the wall-like member 17i is provided as a flow resistance member of the partition heat insulating material inlet 15, the inflow into the partition wall 3 at the time of injection of the foamable synthetic resin is allowed smoothly. The irregular flow due to the density difference during solidification of the foamable synthetic resin during foaming can be appropriately inhibited, and the degree of occurrence of dents in the outer case can be reduced.

  Preferably, the thickness of the wall-like member increases as it proceeds from the partition wall shell 31 to the inside of the partition wall 3. That is, for example, as shown in FIG. The wall-like members 17 j increase in thickness as they progress from the partition wall shell 31 to the inside of the partition wall 3, and thus appear as a tapered shape in the cross-sectional view of FIG. By adopting this configuration, the inflow into the partition wall at the time of injection of the foamable synthetic resin is not impeded so much, and the flow due to the density difference at the time of solidification of the foamable synthetic resin during foaming is appropriately inhibited. It is possible to reduce the degree of occurrence of dents in the outer case.

  As shown in FIG. 27, it is also preferable to provide a guiding member 18 extending in a wall shape from the partition wall shell 31 toward the inside of the partition wall 3 at least at part of the outer edge of the partition wall heat insulating material inlet 15. . By adopting this configuration, the flow of the foamable synthetic resin can be further regulated by the action of the induction member 18, while the flow occurring at irregular angles can be inhibited by the induction member 18. Therefore, the inflow of the foamable synthetic resin into the partition wall at the time of injection can be prevented so much as to prevent irregular flow due to the density difference when the foamable synthetic resin solidifies during foaming.

As shown in FIG. 28, the above-mentioned wall-like member 17j and the guiding member 18 may be used in combination.
Eighth Embodiment
(Constitution)
With reference to FIG. 29, the heat insulation box in Embodiment 8 based on this invention is demonstrated.

  The heat insulation box in the present embodiment is the same as the heat insulation box described in the first embodiment with respect to the overall structure, but the following points are compared with the heat insulation box 101 described in the first embodiment. It is different.

  When a portion corresponding to the lower right portion of FIG. 10 shown in the first embodiment is viewed in cross section, the heat insulating box according to the present embodiment has a structure as shown in FIG. However, FIG. 29 shows the state before filling the heat insulating material.

  In the present embodiment, the flow resistance member acts in a direction to open the partition heat insulating material inlet 15 by the flow that is going to enter the partition heat insulating material inlet 15, and by the flow going out from the partition wall heat insulating material inlet 15 It is a valve member 23 which acts in the direction of closing the partition insulation inlet 15.

  Furthermore, it is preferable that the valve member 23 be an elastic plate disposed inside the partition outer shell 31 so as to close the partition heat insulating material inlet 15. By adopting this configuration, it is possible to realize a valve member that performs desired opening and closing with a simple structure. As an example is shown in FIG. 30, the valve member 23 includes a fixing portion 24. The valve member 23 is fixed to the inner surface of the partition wall shell 31 with the fixing portion 24.

(Action / effect)
FIG. 30 shows the inflow of the foamable synthetic resin into the partition wall 3 at the time of injection. In the space between the inner case 1 and the outer case 2, the liquid level of the foamable synthetic resin 7 rises as shown by the arrow 96. On the other hand, a portion of the foamable synthetic resin 7 flows into the inner space 33 of the partition wall 3 through the inner box heat insulator flow passage 11 and the partition wall heat insulator inlet 15 as shown by the arrow 97. The valve member 23 opens the partition heat insulating material inlet 15 by elastically deforming. Although the foamable synthetic resin 7 may have already started the foaming phenomenon, it has such a fluidity that it can flow to the lower side.

  Next, a state in which a sufficient amount of the foamable synthetic resin 7 enters the internal space 33 and the foaming phenomenon progresses is shown in FIG. Due to the foaming phenomenon of the foamable synthetic resin 7 in the internal space 33, a force acts on the partition wall shell 31 to push outward as shown by the arrow 98. By this force, the valve member 23 is pushed outward and tries to close the partition insulation inlet 15. At this time, the closing of the partition insulation inlet 15 by the valve member 23 may not be complete. Even if the closure is incomplete, there is a certain effect on the flow inhibition due to the density difference that occurs thereafter.

  In this embodiment, when the foamable synthetic resin flows into the partition wall 3 at the time of injection, it is pushed by the flow of the arrow 96 to open the partition wall heat insulating material inlet 15, and the flow is permitted. When the foaming phenomenon occurs in the inner space 33 of the partition wall 3, the partition wall heat insulating material inlet 15 is completely or incompletely closed by pushing the valve member 23 by the force shown by the arrow 98. Therefore, the valve member 23 can inhibit the irregular flow due to the density difference when the foamable synthetic resin formed later solidifies. As a result, it is possible to reduce the degree of occurrence of dents in the outer case.

(Embodiment 9)
(Constitution)
Referring again to FIGS. 6 and 7, the heat insulation box in the ninth embodiment according to the present invention will be described. The heat insulation box in the present embodiment is the same as the heat insulation box described in the first embodiment with respect to the entire structure, and the heat insulation box 101 described in the first embodiment is also already the present embodiment. The point of interest is different from that of the first embodiment, and therefore will be described again below.

  In the present embodiment, the partition wall outer shell side surface 32 communicates with the first foam heat insulating material portion 5 by one or more partition wall heat insulating material auxiliary inlets 16 arranged along the depth direction of the inner box 1. Including. The partition wall heat insulating material inlet 15 is closer to the side of the inner box main opening 1 a than any of the one or more partition wall heat insulating material auxiliary inlets 16. The partition wall heat insulating material auxiliary inlet 16 does not have to be provided with a flow resistance member. In FIG. 6 and FIG. 7, the side with the partition wall front face 34 corresponds to the side of the inner box main opening 1a.

  In other words, a plurality of inlets are arranged on the side surface 32 of the partition wall, and the inlet at the side closest to the inner box main opening 1a is the partition thermal insulator inlet 15, and the other is the partition thermal insulator auxiliary inlet 16 It means that there is. Furthermore, in other words, among the plurality of inlets arranged on the partition wall outer shell side surface 32, a flow resistance member is provided at least at the inlet closest to the inner box main opening 1a side.

  In the example shown in FIG. 6 and FIG. 7, although the partition wall heat insulating material inlet 15 is a rectangle and the partition wall heat insulating material auxiliary | assistant inlet 16 is circular, this is an illustration to the last, and the shape of these inlets Is not limited to the illustrated one. Moreover, in the example shown in FIG. 6 and FIG. 7, although the partition wall heat insulating material auxiliary | assistant inlets 16 which are arranged in multiple numbers all have the same shape and the same size, this is an example to the last, and several partitions When the wall heat insulating material auxiliary inlet 16 is present, different shapes and different sizes may be mixed in these.

(Action / effect)
When the foamable synthetic resin is injected, the process is performed with the front side, that is, the inner box main opening 1a side facing downward. In the present embodiment, of the plurality of inlets provided on the side surface 32 of the partition wall, the flow resistance member is provided at the inlet closest to the inner box main opening 1a side, and the lower inlet, ie Since the flow resistance member is provided at the inlet where the heat insulating material suction phenomenon due to the density difference is remarkable, it is particularly effective for preventing the occurrence of the dent in the outer case.

Tenth Embodiment
(refrigerator)
With reference to FIG. 1 again, a refrigerator according to a tenth embodiment of the present invention will be described.

  The refrigerator in the present embodiment is provided with the heat insulation box described in any of the previous embodiments. The appearance of this refrigerator is, for example, as shown in FIG. Although the appearance of the partition wall heat insulating material inlet 15 can not be seen from the appearance of the refrigerator 201, the refrigerator 201 is provided with the partition wall 3 inside, and the partition wall 3 has the partition wall heat insulating material inlet 15 on the partition wall outer shell side 32. The partition wall heat insulating material inlet 15 is provided with the flow resistance member as described above.

(Action / effect)
In the present embodiment, since the flow resistance member is provided at the partition wall heat insulating material inlet 15, the density of the heat insulating material immediately after injection for forming the first foamed heat insulating material portion 5 and the second foamed heat insulating material portion 6 It is possible to suppress the suction phenomenon due to the difference, and as a result, it is possible to obtain a refrigerator in which the occurrence of the dent in the outer case is suppressed.

  In addition, although it may be said over the whole of the embodiment described so far, the shape of the partition wall 3 shown by FIG. 2, FIG. 6 etc. is an example to the last, and is not restricted to this. The position, shape, and the like of the partition wall heat insulating material inlet 15 provided on the partition wall outer shell side surface 32 are merely an example, and the present invention is not limited thereto.

  As mentioned above, the application object of the heat insulation box based on this invention is not restricted to a refrigerator. The heat insulation box based on this invention can be applied also to things other than a refrigerator, such as a cold storage, a heat storage, a freezer, for example.

  In the drawings used in the above description, the shapes, structures, and the like of portions that are not essential to the present invention are shown in a simplified manner. The dimensional ratio of each part is not intended to be faithfully illustrated, and may be exaggerated for the convenience of description.

Note that some of the inventions described above are organized and shown in the following appendices.
(Supplementary Note 1)
Any of the above-mentioned heat insulation box bodies provided with the guidance member extended in the shape of a wall towards the inside of the partition wall from the partition wall shell at least in part of the outer edge of the partition wall heat insulating material entrance.

(Supplementary Note 2)
The flow resistance member acts in a direction to open the partition heat insulating material inlet by the flow that is going to enter the partition wall heat insulating material inlet, and the partition wall heat insulating material by the flow that is going out from the partition wall heat insulating material inlet Any of the above-mentioned heat insulation boxes which are valve members which act in the direction which closes an inlet.

(Supplementary Note 3)
The heat insulation box according to appendix 2, wherein the valve member is an elastic plate disposed inside the partition outer shell so as to close the partition wall heat insulating material inlet.

(Supplementary Note 4)
The partition wall outer shell side surface includes one or more partition wall heat insulating material auxiliary inlets arranged along the depth direction of the inner box so as to be in communication with the first foamed heat insulating material portion, and the partition wall heat insulating material Any of the above-mentioned heat insulation box bodies which are located in a position nearer to the side of said inner box main opening rather than either of said 1 or more partition wall insulation auxiliary entrances.

Note that a plurality of the above embodiments may be appropriately combined and adopted.
In addition, the said embodiment disclosed this time is an illustration and restrictive at no points. The scope of the present invention is indicated not by the above description but by the claims, and includes all modifications within the meaning and scope equivalent to the claims.

  DESCRIPTION OF SYMBOLS 1 inner box, 1a inner box main opening, 2 outer box, 2a outer box main opening, 2b back, 3 partition wall, 4a, 4b, 4c lid, 5 1st foam heat insulating material part, 6 2nd foam heat insulation Material part, 7 (liquid) foamable synthetic resin, 11 inner box heat insulating material flow through, 12 outer box heat insulating material inlet, 15 partition wall heat insulating material inlet, 15a, 15b, 15c, 15d, 15e, 15f, 15g Opening , 15s, 15t opening group, 16 partition wall heat insulating material auxiliary inlet, 17 opening area dividing member, 17i, 17j wall-like member, 18 induction member, 19 (corresponding to partition wall heat insulating material inlet) site, 20 site, 23 Valve member, 24 fixed part, 31 partition wall shell, 32 partition wall shell side surface, 33 (of partition wall) internal space, 34 partition wall front surface, 91, 92, 93, 94, 95, 95n, 96, 97, 98 arrow, 1 1 heat-insulating main body, 201 refrigerator.

Claims (5)

An outer case having an outer case main opening that opens to one side,
An inner case disposed inside the outer case and having an inner case main opening that opens on the same side as the outer case main opening.
A partition wall which divides the inner space of the inner box by being inserted into and disposed inside the inner box so as to extend in the depth direction of the inner box from the inner box main opening;
In the space between the outer case and the inner case, a first heat insulating foam portion is disposed by being filled with a heat insulating foam material,
The partition wall includes a partition wall shell having a hollow structure, and a second foam insulation material portion filled in the inner space of the partition wall shell,
The partition wall shell has a partition wall shell side surface in contact with the inner box,
The outer case has an outer case insulation inlet for injecting foam insulation from the outside,
The inner box has an inner box heat insulating material flow passage through which the first foam heat insulating material portion and the second foam heat insulating material portion can communicate with each other at a portion in contact with the side surface of the partition wall outer shell;
The partition wall outer shell side surface has a partition wall heat insulating material inlet communicating with the inner box heat insulating material circulation port,
A flow resistance member is provided at the partition wall heat insulating material inlet ,
The heat insulation box body, wherein the flow resistance member is a wall-like member which traverses the partition wall heat insulating material inlet and extends from the partition outer shell toward the inside of the partition wall . The heat insulation box according to claim 1 , wherein the wall-like member increases in thickness as it proceeds from the partition outer shell to the inside of the partition. An outer case having an outer case main opening that opens to one side,
An inner case disposed inside the outer case and having an inner case main opening that opens on the same side as the outer case main opening.
A partition wall which divides the inner space of the inner box by being inserted into and disposed inside the inner box so as to extend in the depth direction of the inner box from the inner box main opening;
In the space between the outer case and the inner case, a first heat insulating foam portion is disposed by being filled with a heat insulating foam material,
The partition wall includes a partition wall shell having a hollow structure, and a second foam insulation material portion filled in the inner space of the partition wall shell,
The partition wall shell has a partition wall shell side surface in contact with the inner box,
The outer case has an outer case insulation inlet for injecting foam insulation from the outside,
The inner box has an inner box heat insulating material flow passage through which the first foam heat insulating material portion and the second foam heat insulating material portion can communicate with each other at a portion in contact with the side surface of the partition wall outer shell;
The partition wall outer shell side surface has a partition wall heat insulating material inlet communicating with the inner box heat insulating material circulation port,
A flow resistance member is provided at the partition wall heat insulating material inlet,
The flow resistance member acts in a direction to open the partition heat insulating material inlet by the flow that is going to enter the partition wall heat insulating material inlet, and the partition wall heat insulating material by the flow that is going out from the partition wall heat insulating material inlet A thermal insulation box , which is a valve member acting in a direction closing an inlet . Said valve member, said Ru Oh a plate having the disposed inside the partition wall shell elastically so as to close the partition wall insulation material inlet, insulation box body according to claim 3.   The refrigerator provided with the said heat insulation box in any one of Claims 1-4.

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