DE202018104807U1 - Vacuum-insulated stacking container for the temperature-controlled transport of foodstuffs - Google Patents

Abstract

A container (1) for the temperature-controlled transport of food, comprising an outer container (3) having an outer container bottom (31) and an outer container wall (32) joined together to form a unilaterally opened receiving space (33), and wherein the stack container (1) further comprising an inner container (2) having an inner container bottom (21) and an inner container wall (22) which are interconnected to form a container space (23) open on one side, wherein the inner container wall (22) has an upper edge portion (22). 221) and the outer container bottom (31) comprises a lower edge portion (311) formed so complementary to each other in stacked stacked containers (1) and between the Innenbehälterwandung (22) and the outer container wall (32) and between the inner container bottom (21) and the outer container bottom (31) a vacuum insulation element (5) ange is orders.

Description

The invention relates to a vacuum-insulated stack container for the temperature-controlled (eg refrigerated) transport of food according to the independent claim.

Stacking containers of this type are widely known in practice and are used for example in the handling of bread in bakeries in the form of plastic boxes for transport, but also for storage. These plastic boxes are stackable when filled and unfilled.

Such plastic boxes comprise a container wall which circumferentially encloses a container bottom on four sides, whereby a container space opened on one side upwards arises, which can be filled with bread or the like.

In this case, the open edge of the container wall and the bottom are each formed with a peripheral edge, which can engage with each other. Thus, the edge of the container bottom of an overhead plastic box at the edge of the container wall of an underlying plastic box rest against the stacked plastic boxes to prevent slipping.

The problem with such plastic boxes is that the application is limited due to lack of insulating properties. In particular, because more and more often in so-called branch bakeries the load is delivered tempered, conventional plastic boxes without insulation in a transport with delivery vehicles without refrigeration unit can not be used. Even with vehicles with integrated cooling, there is a significantly higher temperature influence during the transfer to the store. There is a risk here that the food stored or transported in it undergoes too great a temperature fluctuation and as a result is no longer usable or spoils.

The problem of the lack of insulation in plastic food transport boxes is equally evident in the transport of meat products. Here there is a risk of insufficient cooling during handling within the butcher shop. This problem can be transferred to many other areas of food handling.

A thermally insulating stack container is in the DE 20 2016 001 097 U1 shown. In principle, the transport container described therein can be used for temperature-sensitive foods (eg bread, meat products, fish, etc.). The transport container comprises a lower part of an inner container and an outer container, between which an insulating material is arranged. On the lower part of a closable lid is arranged, the upper side of which is formed in the closed state complementary to the underside of the transport container to allow stacking. In contrast to the plastic boxes described above, the transport container is provided with a lid, so that when stacking the bottom of the upper container is placed on the closed lid. This results in the vertical direction, in principle, a redundant insulation, which is not required for normal use in food transport.

It is the object of the present invention to provide a stacking container which overcomes the disadvantages of the prior art and which in particular has a simple construction and can be handled practically for transport.

This object is achieved by a stack container for the temperature-controlled transport of food according to the independent claim. Advantageous embodiments form the subject of the respective subclaims.

The invention comprises (vacuum-insulated) stacking containers for the temperature-controlled transport of foodstuffs. The stacking container has an outer container having an outer container bottom and an outer container wall, which are connected to each other so as to form a unilaterally open receiving space. The stacking container further has an inner container having an inner container bottom and a Innenbehälterwandung, which are connected to each other so as to form a one-sided open container space. The inner container wall has an upper edge portion and the outer container bottom has a lower edge portion, which are formed so complementary to each other to grip in stacked stacking containers. Between the inner container wall and the outer container wall and between the inner container bottom and the outer container bottom, a vacuum insulation element is arranged. Due to the configuration of the upper edge portion, the lower edge portion of the overlying stacking container can securely engage, so that a plurality of stacking containers can be securely stacked one over the other. Due to the arrangement of the vacuum insulation element between the inner container bottom and the outer container bottom, an insulated lid is provided in stacked stack containers by the bottom of the upper container closes the container space of the lower container. Preferably, the vacuum insulation element is a vacuum insulation panel (VIP), which may be used, for example, in US Pat EP 2 700 891 A2 or the DE 20 2014 004 515 U1 is described. In this way one can Stack container system of at least two stacking containers, which are arranged stacked, provide, wherein the outer bottom of an upper stack container closes the top of the container space of the lower stacking container. This results in highly insulated, stackable compartments that provide a thermal system with good thermal conductivities less than 0.5 W / K. This corresponds to a heat transfer coefficient (U-value) of approx. 0.61 W / (m ² K) (including all thermal bridges, including the lid surface and based on the outer surface). In general, the achieved temperature holding time is sufficient due to the very good insulation by vacuum insulation elements to achieve transport times of about 6 hours. To extended transport time z. B. to reach 24 hours, phase change materials (PCM) can be introduced, which extend the temperature holding period accordingly. In order to prevent a mechanical load on the goods, the (PCM) -Akkus (sides and / or cover) are fixed by a holder in the liner and prevented from falling over. As a conclusion of a stack of boxes or if individual boxes are delivered or after delivery have a longer waiting time, an additional lid can be arranged, which comprises a vacuum insulation element.

According to an advantageous aspect, the inner container wall at the upper edge portion and the outer container bottom at the lower edge portion each comprise an L-shaped stop. The L-shaped configuration makes it possible in a simple manner to form the upper edge portion and the lower edge portion complementary, so that they are non-slip locked.

Advantageously, the L-shaped stop at the upper edge portion and the lower edge portion each have a first profile section and a (at right angles thereto arranged) second profile section, each having a minimum length of 0.5 cm.

Particularly preferably, the inner container wall comprises an extension of a size and shape that completely surrounds an upper edge section, so that the extension, when inserted, covers the outer container wall at least in sections.

Advantageously, the extension of the inner container with the outer container wall circumferentially firmly connected.

In order to achieve the firm connection, the extension of the inner container and the outer container wall is preferably made of a thermally available plastic material. The plastic can z. As polyurethane, polypropylene or polyethylene. The extension of the inner container is welded to the Außenbehälterwandung.

According to an alternative, the extension of the inner container is glued to the outer container wall. According to the alternative, both thermally available, and not more available substances can be connected by a bond.

It is further preferred that the inner wall starting from the inner bottom is arranged perpendicularly running or tapered diverging. In particular, if the vacuum insulation element is a one-piece vacuum insulation panel, which is folded according to the course of the inner container bottom and the outer container bottom, it is advantageous for the assembly, if the distance between the inner container bottom and outer container bottom is greater while the distance between inner container wall and outer container wall is smaller.

According to a further advantageous aspect, the size of the inner container bottom surface is at least 70% of the size of the outer container bottom surface. Due to the excellent insulating properties of vacuum insulation panels, it is possible to keep the space between the inner container bottom surface and the outer container bottom surface small so that a similar inner container bottom surface area is provided compared to the outer container bottom surface.

It is particularly preferred that the vacuum insulation element is a single (integral) vacuum insulation panel. The vacuum insulation panel comprises at least one folding edge.

Advantageously, the outer container bottom has a size and shape to completely circumferentially complete the upper edge portion of an underlying stacking container. An advantageous example provides that the closure between the containers is designed in such a way that convection is prevented.

A possible embodiment of this aspect provides that the outer container bottom has a sufficient height offset in the floor construction to intervene so deep in the stacked state of two stack container, in the lower upper edge portion that the thermal path of the heat is sufficiently extended and convection is reduced.

In the following the invention will be explained in more detail with reference to the examples shown in the accompanying drawings.

• 1 eine perspektivische Detailansicht des Außenbehälters und des Innenbehälters eines Ausführungsbeispiels des erfindungsgemäßen Stapelbehälters für den temperaturgeführten Transport von Nahrungsmitteln;
• 2 eine seitliche Schnittansicht des Stapelbehälters;
• 3 eine perspektivische Detailansicht einer Ecke eines Innenbehälters aus 1;
• 4a eine perspektivische Seitenansicht von zwei übereinander gestapelten Stapelbehältern;
• 4b eine perspektivische Seitenansicht von zwei übereinander gestapelten Stapelbehältern mit einem Deckel; und
• 5 eine Draufsicht auf ein Vakuumisolationselement für einen Stapelbehälter, wie es zwischen dem Außenbehälter und dem Innenbehälter aus 1 angeordnet werden kann.

Show it:

• 1 a detailed perspective view of the outer container and the inner container of an embodiment of the stack container according to the invention for the temperature-controlled transport of food;
• 2 a side sectional view of the stacking container;
• 3 a detailed perspective view of a corner of an inner container 1 ;
• 4a a side perspective view of two stacked stacking containers;
• 4b a side perspective view of two stacked stacking containers with a lid; and
• 5 a plan view of a vacuum insulation element for a stacking container, as it is between the outer container and the inner container 1 can be arranged.

In 1 is a detail view of the outer container 3 and the inner container 2 an embodiment of the stacking container according to the invention 1 shown.

The outer container 3 includes an outer container bottom 31 and an outer container wall extending upwardly therefrom 32 , The outer container wall 32 and the outer container bottom 31 are formed in one piece or formed in a manufacturing step of a plastic material. The thus formed outer container 3 has a receiving space open on one side upwards 33 Into the inner container 2 can be inserted almost completely, leaving between the inside of the outer container 3 and the outside of the inner container 2 a completely closed receiving space is formed for a vacuum insulation element.

The inner container 2 has an inner container bottom 21 and an inner container wall 22 , which are integrally connected to each other made of a single material. So is a one-sided open container space 23 formed, which is suitable for receiving food intended for temperature-controlled transport.

To ensure stacking in a safe and stable manner, the inner container wall has 22 above a border section 221 with a fully encircling L-shaped stop.

The outer container bottom 31 has a lower edge section (not visible in this perspective; 2 ), which is formed so complementary to stacked stacking containers 1 on the L-shaped stop at the upper edge portion 221 on the inner container wall 22 of the underlying stacking container 1 to rest.

The fully assembled stack container for the temperature-controlled transport of food is in 2 shown in a side sectional view.

In the sectional view of the stacking container 1 is the outer container 3 with an outer container bottom 31 and an outer container wall 32 that are directly connected with each other. In the upstairs open recording room 33 is the inner container 2 arranged.

The inner container 2 has an inner container bottom 21 and an inner container wall 22 which are also directly connected.

From the sectional view of the circumferential upper edge portion goes 221 with the L-shaped paragraph and the lower edge section 311 arranged lower L-shaped paragraph. The two L-shaped shoulders are formed so complementary that in the stacked state of two stacking container 1 these lie one inside the other, around the stacking containers 1 to secure against slipping. The shown L-shaped stop at the lower edge portion 311 has a first profile section 3111 with a length of 1.9 cm and a second profile section 3112 with a length of 0.8 cm.

In the upper area, the Innenbehälterwandung 22 one completely at the upper edge section 221 circumferential extension 222 on. The extension 222 has a size and shape that is sufficient to the outer container wall 32 completely covered from above. The cover can not be completely executed in principle. This variant may result in disadvantages in terms of mechanical stability or thermal bridges.

The inner wall 22 is from the inner floor 21 starting conically diverging, ie towards the outer container wall 32 running, arranged. The degree of taper may vary depending on the production technology and the application. In general, a minimum of about 1 ° is considered appropriate.

The illustrated vacuum insulation element 5 is a one-piece vacuum insulation panel.

3 is a perspective detail view of a corner of an inner container of the stacking container 2 ,

The inner container wall 22 has an upper edge section 221 with an L-shaped stop as well as an adjoining one circumferential extension 222 , The width of the extension 222 corresponds to the thickness of the outer container wall. The shown L-shaped stop at the upper edge portion 221 each has a first profile section 2211 with a length of 1.3 cm and a second profile section 2212 with a length of 0.8 cm.

In 4a a stack of two stack containers is shown. At the upper stack container 1 the outer container bottom (not shown) is designed to abut in the upper edge portion of the lower stacking container. In 4b is the stack with an insulated lid 6 shown, with the lid 6 comprises at the top a profile which is complementary to the underside of the outer container.

This in 5 shown vacuum insulation panel 5 has four fold edges 51 , which are arranged in the installed state respectively along the outer periphery of the outer container bottom. The contour of the wings 52 is designed so that it adapts to the outer and inner container (eg conicity). If the geometry is too negligible (eg conicity), the contour is simplified accordingly.

QUOTES INCLUDE IN THE DESCRIPTION

This list of the documents listed by the applicant has been generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.

Cited patent literature

• DE 202016001097 U1 [0007]
• EP 2700891 A2 [0010]
• DE 202014004515 U1 [0010]

Claims (13)

A container (1) for the temperature-controlled transport of food, comprising an outer container (3) having an outer container bottom (31) and an outer container wall (32) joined together to form a unilaterally opened receiving space (33), and wherein the stack container (1) further comprising an inner container (2) having an inner container bottom (21) and an inner container wall (22) which are interconnected to form a container space (23) open on one side, wherein the inner container wall (22) has an upper edge portion (22). 221) and the outer container bottom (31) comprises a lower edge portion (311) formed so complementary to each other in stacked stacked containers (1) and between the Innenbehälterwandung (22) and the outer container wall (32) and between the inner container bottom (21) and the outer container bottom (31) a vacuum insulation element (5) ange is orders. Stacking container (1) after Claim 1 wherein the inner container wall (22) at the upper edge portion (221) and the outer container bottom (31) at the lower edge portion (311) each comprise an L-shaped stop. Stacking container (1) after Claim 2 , wherein the L-shaped stop at the upper edge portion (221) and at the lower edge portion (311) each comprise a first profile section and a second profile section, each having a minimum length of 0.5 cm. Stacking container (1) according to one of Claims 1 to 3 wherein the inner container wall (22) comprises an extension (222) of a size and shape that completely surrounds the upper edge section (221), so that the extension (222) covers the outer container wall (32) at least in sections when it is inserted. Stacking container (1) after Claim 4 , wherein the extension (222) of the inner container (2) with the outer container wall (32) circumferentially fixedly connected. Stacking container (1) after Claim 4 wherein the extension (222) of the inner container (2) and the outer container wall (32) are made of a thermally available plastic material, and wherein the extension (222) of the inner container (2) with the outer container wall (32) are welded. Stacking container (1) after Claim 4 , wherein the extension (222) of the inner container (2) with the outer container wall (32) is glued. Stacking container (1) after Claim 4 wherein the extension (222) of the inner container (2) with the outer container wall (32) is circumferentially releasably connected. Stacking container (1) according to one of the preceding claims, wherein the inner wall (22) is arranged starting from the inner bottom (21), starting perpendicularly or conically diverging. Stacking container (1) according to one of the preceding claims, wherein the size of the inner container bottom surface (21) is at least 70% of the size of the outer container bottom surface (31). A stack container (1) according to any one of the preceding claims, wherein the vacuum insulation element (5) is a single vacuum insulation panel, and wherein the vacuum insulation panel comprises at least one fold edge (51). Stacking container (1) after Claim 11 wherein the vacuum insulation panel comprises four folded edges (51), and wherein the four folded edges (51) are respectively disposed along the outer periphery of the outer container bottom (31) when installed. A stack container (1) according to any one of the preceding claims, wherein the outer container bottom (31) has a size and shape to complete the upper peripheral portion (221) completely circumferentially.

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