JP4520950B2 - Cold box - Google Patents

Description

  The present invention relates to a cold box (including a warm box) such as a cooler box that can be used for fishing and leisure.

There is a so-called vacuum heat insulating material in which a core material such as glass wool or urethane foam is coated with a resin coating material for laminating, and the pressure inside the coating material is reduced by reducing the pressure. Conventionally, such a vacuum heat insulating material has been used in a cold box, and the vacuum heat insulating material is provided with a through-hole through which a member such as a wiring or a pipe is inserted.
For example, in the gazette of patent document 1, the vacuum heat insulating material with which the heat insulation core material was enclosed in the bag which consists of gas barrier packaging materials has a through-hole, and a gas barrier is along the inner peripheral part of this through-hole. A vacuum heat insulating material in which conductive packaging materials are sealed is disclosed.
JP-A-8-303686

However, when using the vacuum heat insulating material as described above for a cold box, because the through hole is provided in the flat vacuum heat insulating material, when the periphery of the through hole is deformed and floated due to the temperature difference, Cold air escaped from here, and there existed a malfunction that predetermined heat insulation performance was not obtained.
Therefore, the problem to be solved is to provide a cold box capable of preventing the deformation around the through hole and maintaining the cold effect when the vacuum heat insulating material is used for the cold box.

In order to solve the above-mentioned problem, in the first invention, there is provided a cold insulation box in which a heat insulating material including a vacuum heat insulating material is disposed between an inner case having a bottom wall and a side wall and an outer case, the vacuum heat insulating material. The material is along the outer side surface of the inner case or the inner side surface of the outer case, and has a constituent surface portion including a bottom surface portion and four side surface portions, and at least two constituent surface portions of the vacuum heat insulating material are integrally continuous. and bent through a bend, the vacuum heat insulator, through holes for inserting the predetermined site or member is positioned on the bent portion, the through hole, one side portion having a vacuum heat insulating material One from providing cool boxes, characterized in hole der Rukoto provided over the bottom portion.
The cold box can also be used as a warm box, and the cold box of the present application is used to include a warm box.
The insertion in this application has a broad meaning including not only the case where it passes through the inside and outside of the vacuum heat insulating material, but also the case where it penetrates within the thickness range of this vacuum heat insulating material. is there.

The second invention provides a cold box in which at least a part of the inner case or the outer case is inserted into the through hole of the first invention.
In the third invention, the vacuum heat insulating material of the second invention is such that the bottom surface portion and at least one side surface portion are continuous, and the through hole is located in the bent portion. A cold box is provided in which a water drainage channel provided on the bottom wall of the inner case is inserted.

  For example, there is a need to insert a vacuum heat insulating material through a predetermined portion or member such as a water channel for draining water or a thermometer. When providing a through-hole for this purpose, if it is provided on the spreading surface of the component surface constituting the vacuum heat insulating material, the temperature difference between the outer side and the inner side of the vacuum heat insulating material may increase during actual use of the cold insulation box. Thus, the edge of the through hole is deformed due to this temperature difference. The area around the through hole of the vacuum heat insulating material in a state where there is no temperature difference is arranged along one of the case surfaces to maintain the cooling effect, but the edge of the through hole depends on the actual temperature difference. When a part deform | transforms, a clearance gap will be produced between cases, and the cold insulation effect of a cold box will reduce. In order to prevent this, in the first aspect of the invention, the through hole is provided at a bent portion of two continuous constituent surface portions. The bent portion is difficult to deform due to its form. Therefore, the edge of the through hole is not easily deformed even if a temperature difference occurs, so that it is difficult for the periphery of the through hole to form a gap between the case and the cooling effect can be maintained.

  In the second invention, since a part of the inner case or the outer case is inserted through the through hole of the vacuum heat insulating material, the vacuum heat insulating material can be positioned with respect to these cases when the cold insulation box is assembled, and the assembly is facilitated. .

  The drainage water channel portion provided in the inner case inevitably communicates with the outer case to discharge water to the outside, but in the third invention, the drainage water channel portion is positioned more than the water drainage water channel portion provided on the side wall. It is provided on the bottom wall of the inner case so that it is low and has a high draining effect. The drainage water channel portion at this position requires the through hole to be positioned at a bent portion where the bottom surface portion and the side surface portion of the vacuum heat insulating material located between the inner case and the outer case are continuous. As described above, the edge portion of the through hole at the position of the bent portion is hardly deformed, and accordingly, a gap is hardly formed between the case and the cold insulation effect can be maintained.

  Hereinafter, the present invention will be described in detail with reference to the drawings. 1 is a perspective view of a cool box according to the present invention, FIG. 2 is an enlarged cross-sectional view of the vicinity of the drain of the cool box of FIG. 1, FIG. 3 is an exploded view of the main components of the cool box of FIG. FIG. 4 is an enlarged cross-sectional view of the vicinity of a drain port during assembly of the main constituent member of FIG. 3. This cold box is a so-called cooler box used for fishing and leisure. A rectangular parallelepiped outer case 10, a rectangular parallelepiped inner case 12, and a vacuum heat insulating material 14 disposed therebetween are the main constituent members.

  Attachment portions 10S are provided on the left and right side walls 10A, 10C of the outer case 10, and a shoulder belt 22 and a handle 20 used when carrying the cooler box are attached. A storage portion 10SN is formed inside the outer case 10, and has an opening 10KK above the storage portion 10SN. A lid 10F that can be opened and closed via the opening / closing operation portion 10K is provided in the opening 10KK. Yes. An inner case 12 is accommodated in the accommodating portion 10SN. The inner case 12 has an opening 12KK on the upper side, is surrounded by a bottom wall 12T and side walls 12A, 12B, 12C, and 12D, and has a storage portion 12SN formed therein. Is formed with a flange portion 12F. An appropriate gap space KK is provided between the outer case 10 and the inner case 12 by placing the flange portion on each side wall upper end 10F of the outer case 10.

  A heat insulating material is provided in the gap space KK to maintain the cold insulation effect. First, each surface portion of the vacuum heat insulating material 14 is formed and disposed along each outer surface of the inner case 12. Adhering along the outer surface of the inner case is performed by using an adhesive such as hot melt. Here, the vacuum heat insulating material 14 includes a U-shaped member KB in which left and right side surface portions 14A and 14C are integrally connected to a bottom surface portion 14T via bent portions 14K and 14K ', and front and rear side surface portions 14B, 14D as a separate body. The inner side surface of the bent portion 14K ′ in which the bottom surface portion 14T of the U-shaped member KB and one side surface portion 14A are connected to the outer surface of the connecting bent portion between the bottom wall 12T of the inner case 12 and one side wall 12A. Are arranged so that the relative movement is restricted, and the U-shaped member KB is positioned with respect to the inner case 12. The U-shaped member and the other members 14B and 14D are bonded by bonding a film-like tape along the abutting peripheral edge portion to close the gap between them.

  In the U-shaped member KB in which the left and right side surface portions 14A and 14C are connected to the bottom surface portion 14T, a through hole 14H having a predetermined size is formed so as to be positioned at a bent portion 14K between the bottom surface portion 14T and one side surface portion 14A. Forming. This is because the drainage water channel portion 12S provided from a position near the connecting bent portion 12AT with the side wall 12A of the bottom wall 12T of the inner case 12 is inserted.

  The vacuum heat insulating material 14 is made of a synthetic resin such as foamable polyurethane, or a core material S formed of an inorganic fiber aggregate such as glass wool in a plate shape, a gas barrier laminate film of the outer covering material SZ and the inner covering material UZ, etc. It is wrapped with a covering material, and air in the covering material is extracted and sealed under reduced pressure to about 10 Pascals. In the region where the through hole 14H is provided, there is no core material, and the outer covering material SZ and the inner covering material UZ are formed.

  As shown in FIG. 2, in this example, the constituent wall portion of the water channel portion 12S is formed so as to protrude downward with respect to the bottom wall 12T of the inner case 12, and the water channel portion 12S includes: A flange portion of a water pipe 18 described later enters. In order to enhance the draining effect through the water pipe 18 by attaching the water pipe 18 to the lowest possible position, the water channel portion 12S is formed so as to be dug down to the inner side surface of the bottom wall 12T. This water channel portion is inserted into the hole portion 14TH extending to the bottom surface portion 14T side in the through hole 14H of the vacuum heat insulating material 14, and into the hole portion 14AH extending to the one side surface portion 14A side. The cylindrical water passage 18 is inserted therethrough.

  However, the present invention is not limited to this example, and the water channel portion 12S may be formed so as to protrude in the direction so that the water channel portion 12S is inserted into the hole portion on the side surface portion 14A side. One end portion (flange portion) of the water flow pipe 18 is located inside the inner case 12, and the other end portion passes through a hole 10 </ b> H provided in a lower portion of one side wall 10 </ b> A of the outer case 10. The hole 10H is located in the recess 10R, and the other end of the water pipe 18 is accommodated in the recess 10R. A plug ST is detachably attached to the other end, and the drain of the water pipe 18 can be closed or opened. This plug is also contained in the recess. Reference number STN is a stopper member that prevents the plug body from being lost from the cold box. In this manner, a member provided in a part of at least one of the inner case 12 and the outer case 10 or at least one of the inner case 12 and the outer case 10 is inserted into the through hole 14H.

  As shown in FIG. 2, a vacuum heat insulating material 14 is disposed along the outer surface of the inner case 12 in the gap space KK between the outer case 12 and the inner case 10. A foaming heat insulating material 16 such as foaming polyurethane or calcium silicate is injected and filled in the gap, thereby enhancing the heat insulating effect and restricting the movement of the vacuum heat insulating material 14. Further, reference numeral 10K ′ of the outer case in FIG. 3 is a storage recess of the lid opening / closing operation unit 10K.

  FIG. 5 is a view for explaining a manufacturing method of the U-shaped member KB including the bottom surface portion 14T of the vacuum heat insulating material 14. The vacuum heat insulating material 14 forms a through-hole (14h) in the core material S in advance, and inserts the core material S into a bag body made of a gas barrier laminate film composed of an outer coating material and an inner coating material. The bag body opening and the inner periphery of the through hole are heat sealed and sealed, and the inside is depressurized to form a substantially rectangular (so-called bullet-shaped) through hole having a curved side as shown in FIG. A plate-shaped member for vacuum heat insulating material in which 14H ′ is formed at a predetermined position is formed. This member has a size in which the left and right side surface portions 14A and 14C are combined with the bottom surface portion. Bending is performed along a predetermined line 14KL at a position crossing the through hole and another predetermined line 14KL '. These predetermined lines become the bent portions 14K and 14K ', and the through hole 14H' becomes the through hole 14H. The hole 14h provided at a position corresponding to the through hole 14H (or 14H ') of the vacuum heat insulating material 14 in the core material S is formed larger than the through hole 14H (14H'). In addition, the through hole 14H is smaller at the center side, with the end portions of the outer covering material SZ and the inner covering material UZ protruding, and is larger on both sides in the thickness direction.

  Details of the bent portion 14K are shown in FIGS. The groove-shaped portion is pressed and formed along each line located inside the bent portion 14K. That is, as shown in FIG. 6, the peripheral portion of the through hole 14H has a laminated structure of the outer covering material SZ and the inner covering material UZ, and a groove-shaped portion UZK is formed in the inner covering material UZ. Further, the core material S is sandwiched between the inner and outer coating materials UZ and SZ except for the peripheral portion of the through-hole 14H. As clearly shown in FIG. 7, a groove shape is formed between the core material S and the inner coating material UZ. The parts SK and UZK are formed. Thereafter, as shown in FIG.

  As shown in FIG. 2, the inner portion of the outer case recess 10 </ b> R is also inserted into the through hole from the outside, and either the outer case 10 or the inner case 12 is inserted into the through hole 14 </ b> H of the vacuum heat insulating material 14. It is only necessary to be inserted, and it is assumed that a part that has been inserted (invaded) even if it has not passed from the inside to the outside has been inserted. Note that either the outer case 10 or the inner case 12 may pass through the through hole 14H of the vacuum heat insulating material 14 and be inserted therethrough. Further, although the vacuum heat insulating material 14 is along the outer side of the inner case 12, it may be along the inner side of the outer case 10. And when there is no temperature difference between the outside and inside of the vacuum heat insulating material 14 such as when a cold box is not used, the peripheral area of the through hole 14H is on the outside surface of the inner case 12 or the inside surface of the outer case 10. Even if a temperature difference occurs using this cold box, the through-hole 14H is provided at the bent portion 14K and thus is not easily deformed, and the vacuum heat insulating material 14 and the inner case 12 are not easily deformed. Alternatively, it is difficult to generate a gap with the outer case 10, and the cold insulation effect can be maintained.

Further, in the above example, the through hole is provided in the bent portion 14K of the bottom surface portion 14T and the side surface portion 14A, but the side surface portions constituting the vacuum heat insulating material 14 are continuously continuous, for example, the side surface portions 14A and 14B. Can be provided with a through hole at an appropriate height position of the bent portion, and a temperature sensor such as a thermometer can be inserted and disposed from the outer case to the inner case through the through hole. . Furthermore, a bent portion can be formed by bending a part of the bottom surface portion 14T, the side surface portion 14A, etc., and the through hole 14H can be positioned in the bent portion. Also in this case, since the through hole is located at the bent portion, the cold insulation effect can be maintained by suppressing the deformation of the through hole edge. Moreover, although it is preferable that the side part of a vacuum heat insulating material constituent surface part has all four side parts, there may be no either.
In addition, when the cool box has a plurality of vacuum heat insulating materials, it is sufficient that at least one vacuum heat insulating material has the configuration of the present application. Further, the bent portion of the vacuum heat insulating material can be formed by being bent in various shapes such as an L shape, a U shape, and a B shape along the outer surface of the inner case or the inner surface of the outer case.

  INDUSTRIAL APPLICABILITY The present invention can be used for a cold box (or a warm box) such as a cooler box used for fishing or leisure.

FIG. 1 is a perspective view of a cold box according to the present invention. FIG. 2 is an enlarged cross-sectional view around the drain port of the cold box shown in FIG. FIG. 3 is an exploded view of main components of the cold box shown in FIG. FIG. 4 is an enlarged cross-sectional view of the vicinity of the drain outlet during the assembly of the main components shown in FIG. FIG. 5 is an explanatory view of a method for producing a U-shaped member of a vacuum heat insulating material. FIG. 6 shows the details of the bent portion and is a partial cross-sectional view of the position passing through the through hole. FIG. 7 is a partial cross-sectional view showing the details of the bent portion and not passing through the through hole.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Outer case 12 Inner case 12A, 12B, 12C, 12D Side wall 12S Drain channel part 12T Bottom wall 14 Vacuum heat insulating material 14A, 14B, 14C, 14D Side part 14H Through-hole 14K, 14K 'Bending part 14T Bottom part

Claims (3)

Between the inner case having the bottom wall and the side wall and the outer case, a cold insulation box provided with a heat insulating material including a vacuum heat insulating material,
The vacuum heat insulating material has a constituent surface portion including a bottom surface portion and four side surface portions along the outer side surface of the inner case or the inner side surface of the outer case, and at least two constituent surface portions of the vacuum heat insulating material are integrally continuous. And bends through the bend,
The vacuum heat insulating material, a through hole for inserting the predetermined site or member is positioned on the bent portion, the through hole is provided to extend from one side portion having a vacuum heat insulating material to said bottom portion cool boxes, characterized in that Ru hole der that is.   The cold box according to claim 1, wherein at least a part of the inner case or the outer case is inserted into the through hole.   In the vacuum heat insulating material, a bottom surface portion and at least one side surface portion are continuous, and the through hole is located in the bent portion, and water provided on the bottom wall of the inner case is provided in the through hole. The cold insulation box according to claim 2, wherein the water channel for extraction is inserted.

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