WO2017033731A1

WO2017033731A1 - Cool box

Info

Publication number: WO2017033731A1
Application number: PCT/JP2016/073371
Authority: WO
Inventors: 弘嗣青野
Original assignee: トッパン・フォームズ株式会社
Priority date: 2015-08-24
Filing date: 2016-08-09
Publication date: 2017-03-02
Also published as: TW201720720A; JP2017044352A

Abstract

Provided is a cool box 1 having an exterior box 10 configured such that the top surface thereof opens and closes freely, an interior box 20 accommodated in the exterior box 10, and an inner box 30 accommodated in the interior box 20, wherein: a plurality of side surfaces and a bottom surface of the interior box 20 are constituted respectively by mutually independent insulation boards (21a-21d, 22), and at respective boundaries of the plurality of side surfaces and the bottom surface, an end surface of one of two insulation boards abuts the other insulation board to form a box body; and the inner box 30 comprises a non-air-permeable member, has a shape that follows the plurality of side surfaces and the bottom surface of the interior box 20, and has side sections which face the borders and which are configured by the non-air-permeable member being bent.

Description

Cold box

The present invention relates to a cold box that houses and cools an article, and more particularly, to a technique for ensuring internal airtightness while having an inexpensive configuration.

In recent years, in logistics systems, services for transporting goods at low temperatures have been provided for both land transport and air transport. In the case of transporting an article at a low temperature, for example, it is conceivable to store a cold insulation material together with the article in a cold insulation box having heat insulation properties, and transport the article while keeping the article cool by the cold air of the cold insulation material. Similarly, when storing an article in a warehouse at a low temperature, it is conceivable to store the cold insulating material together with the article in a heat insulating cool box and store the article while keeping the cold by the cold air of the cold insulating material. As such a cold box, a box made of foamed polystyrene molded in a box shape is generally used (for example, see Patent Document 1).

By the way, as one means for reducing the manufacturing cost of the cold box as described above, a plurality of heat insulating plates having a certain thickness are used instead of the molded foamed polystyrene. It is conceivable to form the bottom surface and a plurality of side surfaces of the cold box. In that case, since the cold box is configured only by combining the heat insulating plates vertically and horizontally, it is not necessary to form the expanded polystyrene into a box shape, thereby reducing the manufacturing cost.

JP 2000-346514 A

When a cool box is configured by combining a plurality of heat insulating plates, as described above, each of the bottom surface and the plurality of side surfaces of the cool box is configured with a heat insulating plate, and two heat insulations are made at the boundary between the bottom surface and the plurality of side surfaces. The end face of at least one of the heat insulating plates among the plates is brought into contact with the other heat insulating plate to form a box.

However, since the heat insulating plate has a certain thickness in order to ensure heat insulating properties, if only the end face of at least one of the two heat insulating plates is brought into contact with the other heat insulating plate, 2 There is a possibility that a gap is generated at the contact portion of the two heat insulating plates. Therefore, there is a problem in that the cold air inside the cold insulation box escapes to the outside from the gap generated at the contact portion between the two heat insulating plates, and the airtightness is not ensured and the cold insulation effect is reduced.

The present invention has an object of providing a cold box that can ensure the airtightness of the inside even with a simple configuration in which the bottom surface and side surfaces are configured using a plurality of heat insulating plates.

In order to achieve the above object, the present invention provides:
A cold box,
An exterior box whose top surface can be freely opened and closed,
An interior box housed in the exterior box;
An inner box housed in the interior box,
The interior box includes a bottom surface and a plurality of side surfaces by heat insulating plates independent from each other, and at the boundary between the bottom surface and the plurality of side surfaces, an end surface of at least one of the two heat insulating plates is the other heat insulating material. It comes into contact with the plate and becomes a box,
The inner box is made of a non-breathable member, has a shape along a bottom surface and a plurality of side surfaces of the interior box, and a side portion facing the boundary is formed by joining or bending the non-breathable member. Has been.

In the present invention configured as described above, the interior box housed in the exterior box is composed of a heat insulating plate whose bottom surface and the plurality of side surfaces are independent from each other, but each of the bottom surface and the plurality of side surfaces. At the boundary, the end face of at least one of the two heat insulating plates is in contact with the other heat insulating plate to form a box. Therefore, in particular, when the heat insulating plate has a certain thickness in order to ensure heat insulating properties, there is a possibility that a gap is generated at the contact portion between the two heat insulating plates. The present invention includes an inner box made of a non-breathable member having a shape along the bottom surface and a plurality of side surfaces of the inner box, and the inner box includes a bottom surface and a plurality of side surfaces of the inner box. The side part which opposes the boundary of this is comprised by joining or bending the non-breathable member. Therefore, when the object to be cooled and the cold insulating material are stored in the inner box, the internal cold air is blocked by the inner box and does not flow out to the outside through the gaps of the plurality of heat insulating plates constituting the inner box, Even if outside air enters through the gap between the heat insulating plates, it is blocked by the inner box, thereby ensuring the airtightness of the inside.

Thus, the interior box for ensuring heat insulation is configured such that each of the bottom surface and the plurality of side surfaces is a heat insulating plate, and at least one of the two heat insulating plates at the boundary between the bottom surface and the plurality of side surfaces. Even in a simple configuration in which the end face of the heat insulating plate comes into contact with the other heat insulating plate to form a box, the inner box accommodated in the interior box ensures the internal airtightness.

It is also a cold box,
An exterior box whose top surface can be freely opened and closed,
An interior box housed in the exterior box;
An inner box housed in the interior box,
The interior box includes a bottom surface and a plurality of side surfaces by heat insulating plates independent from each other, and at the boundary between the bottom surface and the plurality of side surfaces, an end surface of at least one of the two heat insulating plates is the other heat insulating material. It comes into contact with the plate and becomes a box,
The inner box is made of a non-breathable member, and is formed by molding the non-breathable member into a shape along a bottom surface and a plurality of side surfaces of the interior box.

In the present invention configured as described above, an inner box made of a non-breathable member is accommodated in the inner box, and the inner box has a shape along the bottom surface and the plurality of side surfaces of the inner box. It is configured by molding. Therefore, when the object to be cooled and the cold insulating material are stored in the inner box, the internal cold air is blocked by the inner box and does not flow out to the outside through the gaps of the plurality of heat insulating plates constituting the inner box, Even if outside air enters through the gap between the heat insulating plates, it is blocked by the inner box, thereby ensuring the airtightness of the inside.

In addition, such a heat insulation board consists of a urethane board which has a thickness of 20 mm or more,
It is conceivable that the non-breathable member constituting the inner box is a synthetic resin sheet having a thickness of 10 mm or less.

Further, in the above-described configuration, in the inner box, the non-breathable member is formed in a region facing the at least one of a bottom surface and a plurality of side surfaces of the inner box, wherein the non-breathable member is bent at the side portion. It is also conceivable to have a configuration having an overlapped portion in which are stacked.

According to the present invention, the interior box for ensuring heat insulation is configured such that each of the bottom surface and the plurality of side surfaces is a heat insulating plate, and at least two of the two heat insulating plates at the boundary between the bottom surface and the plurality of side surfaces. Even if the end face of one heat insulating plate is in contact with the other heat insulating plate to form a box, the inner box accommodated in the interior box can ensure the internal airtightness.

It is an external appearance perspective view of the state where the cover part of one embodiment of the cold box of the present invention opened. FIG. 1B is a cross-sectional view taken along the line A-A ′ shown in FIG. It is a figure for demonstrating the mutual accommodation form of the exterior box, interior box, and inner box in the cool box shown to FIG. 1a and FIG. 1b. FIG. 3 is a development view showing a configuration before the inner box shown in FIGS. 1a, 1b and 2 is assembled. It is an external appearance perspective view which shows the state at the time of the inner box shown to FIG. 1a, FIG. 1b, and FIG. 2 being assembled. It is an external appearance perspective view which shows the state at the time of the inner box shown to FIG. 1a, FIG. 1b, and FIG. 2 being assembled. FIG. 3 is an external perspective view showing a state in which an inner box assembled as shown in FIGS. 3a to 3c is housed in an interior box. FIG. 5 is a top view of a state in which a cold object is stored in the cold box shown in FIGS. 1 to 4; It is a figure which shows other embodiment of the interior box used for the cool box of this invention.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.

FIG. 1a is an external perspective view showing a state in which a lid portion of an embodiment of a cold box according to the present invention is opened, and FIG. 1b is a cross-sectional view taken along line A-A ′ shown in FIG. 1a. In addition, in FIG. 1b, the cross section of the cover part 12 is also shown. FIG. 2 is a view for explaining a mutual accommodation form of the outer box 10, the inner box 20, and the inner box 30 in the cold box 1 shown in FIGS. 1a and 1b. 3a is a development view showing a configuration before the inner box 30 shown in FIGS. 1a, 1b, and 2 is assembled, and FIGS. 3b and 3c show a state when the inner box 30 is assembled. It is an external perspective view.

The present embodiment is a cold box 1 configured by housing an inner box 20 and an inner box 30 in an outer box 10 as shown in FIGS. 1a, 1b and 2.

The exterior box 10 is made of, for example, plastic corrugated cardboard, and includes a box part 11 with a top surface opened and a lid part 12 that allows the top surface of the box part 11 to be opened and closed. A heat insulating plate 16 made of a urethane board having a certain thickness is fitted on the inner surface of the lid portion 12. Moreover, the aluminum sheet 13 is affixed on the front and back of this urethane board. Further, on the aluminum sheet 13 on the side of the box portion 11 of the heat insulating plate 16, a lid packing 14 made of foamed polyethylene is attached along the peripheral edge portion. The box portion 11 is configured such that four side surfaces 11a to 11d stand on a bottom surface 15.

The inner box 20 has four side surfaces constituted by four heat insulating plates 21a to 21d independent of each other, and a bottom surface constituted by a heat insulating plate 22 independent of the heat insulating plates 21a to 21d, and is housed in the outer box 10. Yes. The heat insulating plates 21a to 21d, 22 are made of, for example, a urethane board having a thickness of 30 mm, and aluminum sheets (not shown) are attached to the front and back surfaces thereof. Each of the heat insulating plates 21a to 21d constituting the side surface of the interior box 20 stands up in a region along the edge of one surface of the heat insulating plate 22 constituting the bottom surface. Thereby, each end face of the heat insulating plates 21 a to 21 d is in contact with the heat insulating plate 22. In addition, among the heat insulating plates 21a to 21d constituting the side surface of the interior box 20, the

heat insulating plates

21b and 21d facing each other have the end surfaces adjacent to the end surfaces in contact with the heat insulating plate 22 respectively inside the

heat insulating plates

21a and 21c. It is in contact with the region along the edge. Thus, one of the end faces of each of the heat insulating plates 21a to 21d constituting the side surface of the inner box 20 abuts on a region along one side of the one side of the heat insulating plate 22 and constitutes the side surface of the inner box 20. Of the heat insulating plates 21a to 21d, the end surfaces of the

heat insulating plates

21b and 21d facing each other are in contact with regions along the end sides of the inner surfaces of the

heat insulating plates

21a and 21c, respectively. Thereby, at the boundary between the bottom surface and the four side surfaces of the interior box 20, one end surface of the two heat insulating plates abuts on a region along the end side of the other heat insulating plate to form the box body having the storage portion 2. is doing. At this time, three end surfaces of each of the

heat insulating plates

21a and 21c, one end surface of each of the

heat insulating plates

21b and 21d, and all end surfaces of the heat insulating plate 22 are exposed, but the heat insulating plates 21a to 21d and 22 are In the case where moisture easily enters from the end face, it is preferable to cover the exposed end face with a tape having water resistance. The thickness of the heat insulating plates 21a to 21d, 22 is not limited to 30 mm, but is preferably 20 mm or more.

As shown in FIGS. 2 and 3a to 3c, the inner box 30 includes a bottom surface 32 and four side surfaces 31a to 31d made of a synthetic resin sheet which is a non-breathable member having a thickness of 0.5 mm, for example. Is assembled into a box. In a state where the bottom surface 32 and the four side surfaces 31a to 31d are assembled, the interior box 20 has a shape along the bottom surface and side surfaces, and is fitted and accommodated inside the interior box 20. Each of the side surfaces 31a to 31d is connected to the bottom surface 32 at one side, and is equal to the thickness of the heat insulating plates 21a to 21d constituting the side surface of the interior box 20 on the side opposite to the side connected to the bottom surface 32. Edges 33a to 33d having a width of 2 are connected. Further, of the four side surfaces 31a to 31d, each of the side surfaces 31b and 31d facing each other is connected to overlapping sides 34a to 34d having a certain width on two sides adjacent to the side connected to the bottom surface 32. ing. The thickness of the inner box 30 is not limited to 0.5 mm, but is preferably 10 mm or less.

As shown in FIG. 3b, the inner box 30 configured in this way is formed by folding the synthetic resin sheet at the boundary between the bottom surface 32 and the side surfaces 31a to 31d, and the overlapping

margins

34a and 34d are outside the side surface 31a. The synthetic resin sheet is bent at the boundary between the side surfaces 31b and 31d and the overlapping

margin portions

34a and 34d so as to cover a part of the side surface 31b, and the overlapping

margin portions

34b and 34c cover a part of the outer side of the side surface 31c. , 31d and the

overlap margins

34b, 34c, the synthetic resin sheet is bent. In addition, the synthetic resin sheet is folded so that the edges 33a to 33d are inclined outward at the boundaries between the side surfaces 31a to 31d and the edges 33a to 33d. Thereafter, as shown in FIG. 3c, the tape 36 is applied so as to cover the side opposite to the side connected to the side surfaces 31b and 31d of the overlapping margins 34a to 34d, and the overlapping margins 34a to 34d are arranged on the side surfaces. Affixed to 31a and 31c. As a result of the inner box 30 being assembled and accommodated in the interior box 20, the boundaries of the heat insulating plates 21 a to 21 d constituting the side surfaces of the interior box 20 are changed from the boundaries of the four side surfaces 31 a to 31 d of the inner box 30. The side portions 35a to 35d are opposed to each other. At this time, the side portions 35a to 35d are formed by bending the synthetic resin sheet at the connecting side between the side surfaces 31b and 31d and the overlapping margin portions 34a to 34d. Further, the boundary between the heat insulating plate 22 constituting the bottom surface of the interior box 20 and the heat insulating plates 21a to 21d constituting the side surfaces is also opposed to the side portion serving as the boundary between the bottom surface 32 of the inner box 30 and the side surfaces 31a to 31d. It will be. At this time, the side portion is formed by bending the synthetic resin sheet at the connecting side of the side surfaces 31a to 31d and the bottom surface 32.

FIG. 4 is an external perspective view showing a state in which the inner box 30 assembled as shown in FIGS. 3a to 3c is housed in the interior box 20. FIG.

After the inner box 30 assembled as described above is accommodated in the interior box 20, as shown in FIG. 4, it is taped so as to cover the edges 33a to 33d that overlap the end faces of the heat insulating plates 21a to 21d. 37a to 37d are fixed to the interior box 20 by being attached. The tapes 37a to 37d can fix the inner box 30 to the interior box 20 by being attached only to the four corners on the edges 33a to 33d. However, as shown in FIG. By attaching the tapes 37a to 37d so as to cover all of 33d, the tapes 37a to 37d are hardly peeled off. Thereby, the inner box 30 can be more firmly fixed to the interior box 20. At this time, the synthetic resin sheets of the side surface 31a of the inner box 30 and the overlapping

margins

34a and 34d are superimposed on a part of the heat insulating plates 21a to 21d constituting the side surface of the interior box 20 facing the heat insulating plate 21a. There will be an overlapped portion. In addition, an overlapping portion in which the synthetic resin sheets of the side surface 31c of the inner box 30 and the overlapping

margin portions

34b and 34c are overlapped exists in a partial region facing the heat insulating plate 21c.

Hereinafter, a method of using the cool box 1 configured as described above and its operation will be described.

FIG. 5 is a view of the state in which the object to be cooled is stored in the cold box 1 shown in FIGS. 1 to 4 as viewed from the top. In FIG. 5, the edges 33a to 33d are not shown for easy understanding of the effect of the cold box 1.

When the article 4 which is a cold object is to be kept cold using the cold box 1 shown in FIGS. 1 to 4, the article 4 is stored in the storage unit 2 of the cold box 1 as shown in FIG. The cold insulating material 3 is stored in the storage portion 2 so as to surround 4. Then, the article 4 is kept cold by closing the lid 12.

When the lid 12 is closed, the lid packing 14 attached to the inside of the lid 12 abuts against the edges 33a to 33d of the inner box 30. Thereby, the airtightness between the cover part 12 and the inner box 30 is ensured, and the cold-retaining effect can be obtained. Moreover, the heat insulation is ensured also by the heat insulation board 16 attached to the cover part 12, and the cold insulation effect will be acquired.

On the box part 11 side, the interior box 20 housed in the exterior box 10 is provided with heat insulating plates 21a to 21d, 22 that are independent of each other on its four side surfaces and bottom surface, thereby providing heat insulation. It is ensured and a cold insulation effect can be obtained. However, as described above, at the boundary between the four side surfaces and the bottom surface of the interior box 20, the end surface of one heat insulating plate of the two heat insulating plates is in contact with the other heat insulating plate to form a box, There is a possibility that a gap is generated in the contact portion between the two heat insulating plates. In particular, when the heat insulating plates 21a to 21d have a certain thickness as in this embodiment in order to ensure heat insulating properties, there is a high possibility that a gap will occur. In this case, when the outer box 10 is not very airtight like plastic corrugated cardboard, the outside air enters the cool box 1 from the gap, or the cool air inside the cool box 1 flows out from the gap to the outside. In some cases, the cooling effect may be reduced.

Therefore, in the cold box 1 in the present embodiment, the inner box 20 includes an inner box 30 made of a synthetic resin sheet serving as a non-breathable member. In the inner box 30, as described above, the inner box 20 The synthetic resin sheet is bent at the side facing the boundary of the heat insulating plate where there is a possibility that a gap may occur. Therefore, as shown in FIG. 5, the cool air in the storage section 2 is blocked by the inner box 30, and even if the outside air enters through the gaps between the heat insulating plates 21a to 21d, 22 of the interior box 20, It is blocked by the box 30 and the airtightness of the storage unit 2 is ensured.

As described above, in the present embodiment, the interior box 20 for ensuring heat insulation is configured such that each of the plurality of side surfaces and the bottom surface is composed of the heat insulating plates 21a to 21d, 22, and at the boundary between each of the plurality of side surfaces and the bottom surface. Even in a simple configuration in which the end face of one of the two heat insulating plates is in contact with the other heat insulating plate to form a box, the inner box 30 accommodated in the interior box 20 is used to seal the internal airtightness. Will be secured. As a result, when the article 4 to be cooled is stored together with the cold insulation material 3 in the storage portion 2 of the cold insulation box 1, the cold insulation effect by the cold insulation material 3 can be sufficiently obtained, and the article 4 can be reliably kept cold. .

In the present embodiment, the side surfaces 31b and 31d are arranged such that the overlapping

margin portions

34a and 34d cover a part of the outside of the side surface 31a after the synthetic resin sheet is bent at the boundary between the bottom surface 32 and the side surfaces 31a to 31d. The synthetic resin sheet is bent at the boundary between the

overlap margin portions

34a and 34d, and the

overlap margin portions

34b and 34c are covered with the

overlap margin portions

34b and 34c so that the

overlap margin portions

34b and 34c cover a part of the outside of the side surface 31c. The synthetic resin sheet is bent at the boundary, and the tape 36 is attached so as to cover the side opposite to the side connected to the side surfaces 31b and 31d of the overlapping margins 34a to 34d, and the overlapping margins 34a to 34d are side surfaces. The four side portions 35a to 35d of the inner box 30 are attached to the side surfaces 31b and 31d and the overlapping margin portions 34a to 3a. Although the synthetic resin sheet is bent at the connecting side with d, the same is true even if the four side surfaces 21a to 21d are joined at the side portions 35a to 35d by means such as welding. There is an effect. Similarly, the side portion formed by the boundary between the bottom surface 32 and the side surfaces 31a to 31d of the inner box 30 may be configured such that the bottom surface 32 and the side surfaces 31a to 31d are joined by means such as welding.

Even if the inner box 30 is formed by molding a non-breathable member such as a synthetic resin sheet into a shape along the side surfaces 21a to 21d and the bottom surface 22 of the interior box 20, the same effect as described above can be obtained. .

In addition, as the article 4 stored in the storage unit 2, various items are conceivable, and in addition to foods, samples such as blood may be used. In that case, it is conceivable that the specimen is held in a container according to the shape of the storage unit 2 and stored in the storage unit 2, but the container itself may be made of a heat-insulating material such as foamed polyethylene. Good.

(Other embodiments)
FIG. 6 is a view showing another embodiment of the interior box used for the cold insulation box of the present invention, as viewed from the top.

In the interior box 20 shown in the above-described embodiment, among the heat insulating plates 21a to 21d constituting the side surface of the inner box 20, the end surfaces of the

heat insulating plates

21b and 21d facing each other are the surfaces inside the

heat insulating plates

21a and 21c, respectively. By abutting on the region along the edge of the inner wall 20, one end surface of the two heat insulating plates contacts the region along the edge of the other heat insulating plate at the boundary between the bottom surface and the four side surfaces of the interior box 20. The box which has the accommodating part 2 is comprised. However, as shown in FIG. 6, the end surfaces of the heat insulating plates 121a to 121d constituting the side surfaces are formed obliquely, and these end surfaces are in contact with the end surfaces of the intersecting heat insulating plates 121a to 121d, respectively. It is good also as a structure which comprises the box which has a storage part in which the one end surface of two heat insulation plates contact | abuts the other end surface in the boundary of each of these four side surfaces. At that time, it is conceivable that the end face of the heat insulating plate 122 constituting the bottom surface of the interior box is also formed obliquely so as to be in contact with the respective end faces of the heat insulating plates 121a to 121d constituting the side surfaces.

In that case, the end faces of the heat insulating plates 121a to 121d, 122 constituting the plurality of side surfaces and bottom surface of the interior box will not be exposed. Thereby, even if the heat insulating plates 121a to 121d, 122 are made of a material that easily allows moisture to enter from the end surfaces thereof, it is possible to make moisture difficult to enter.

Claims

A cold box,
An exterior box whose top surface can be freely opened and closed,
An interior box housed in the exterior box;
An inner box housed in the interior box,
The interior box includes a bottom surface and a plurality of side surfaces by heat insulating plates independent from each other, and at the boundary between the bottom surface and the plurality of side surfaces, an end surface of at least one of the two heat insulating plates is the other heat insulating material. It comes into contact with the plate and becomes a box,
The inner box is made of a non-breathable member, has a shape along a bottom surface and a plurality of side surfaces of the interior box, and a side portion facing the boundary is formed by joining or bending the non-breathable member. Refrigerated box.
A cold box,
An exterior box whose top surface can be freely opened and closed,
An interior box housed in the exterior box;
An inner box housed in the interior box,
The interior box includes a bottom surface and a plurality of side surfaces by heat insulating plates independent from each other, and at the boundary between the bottom surface and the plurality of side surfaces, an end surface of at least one of the two heat insulating plates is the other heat insulating material. It comes into contact with the plate and becomes a box,
The inner box includes a non-breathable member, and the non-breathable member is formed by molding the non-breathable member into a shape along a bottom surface and a plurality of side surfaces of the interior box.
In the cold box according to claim 1 or 2,
The heat insulating plate is made of a urethane board having a thickness of 20 mm or more,
The non-breathable member constituting the inner box is a cold box that is a synthetic resin sheet having a thickness of 10 mm or less.