DE29620794U1 - Open-plan refrigerated containers - Google Patents

Description

The innovation concerns a large-capacity refrigerated container with an interior enclosed by a front wall, doors, side walls, cover and floor panels, in which the floor panel is provided with a sandwich construction with channels through which cooling air flows, which are formed from T-gratings provided on the upper cover panel of the floor panel.

Such refrigerated containers are used worldwide as so-called "port hole" containers for the transport of refrigerated and frozen goods. During transport, cooling air is supplied to and removed from the container's air space via the port holes, with the cooling air circulating around the cargo on all sides along the walls of the container.

However, it has been shown that due to the relatively thick base plate with the T-gratings arranged on it, the interior space was relatively small and due to the upper edges of the doors and the associated door panels running below the upper corner fittings, the clear height of the door opening was comparatively low, so that the possible stacking height for the loading and unloading process on the pallets generally used for loading a refrigerated container was limited.

The aim of this innovation is therefore to improve a large-capacity refrigerated container of the type mentioned above so that both the available loading space in terms of volume and the clear height of the container doors can be increased.

This task is solved in accordance with the innovation in that the upper cover plate is arranged lowered downwards together with a door frame that limits the door opening at the bottom.

This makes it possible to increase the loading space of the container by around 5% compared to conventional containers, while maintaining the same external dimensions as defined by the relevant ISO standard. This means a significant increase in the economic efficiency of the container, given the relatively low freight rates that can be achieved due to strong international competition.

Further details of the innovation emerge from the following detailed description and the attached drawings, in which a preferred embodiment of the invention is illustrated by way of example.

The drawings show:

Figure 1 shows a large capacity refrigerated container in side view;

Figures 2 and lower corner fittings of the container in side view;

Figure 4 is a view of the door side of the container;

Figure 5 shows a longitudinal section through a section of a floor slab;

Figure 6 shows a cross-section through a section of a floor slab;

** ■·■

Figure 7

a section through a section of a floor slab with air diversion;

Figure 8

a partial view of the upper door side according to Figure 4;

Figure 9

a partially sectioned side view of an upper door hinge;

Figure 10

a partially sectioned side view of a lower door hinge in the area of a lowering of the floor plate and

Figure 11

a partially sectioned top view of a door hinge.

A large-capacity refrigerated container according to the innovation essentially consists of an interior 6 enclosed by front wall 1, doors 2, side walls 3, cover and floor panels 4, 5, in which the floor panel 5 is provided in a sandwich construction with channels 7 through which cool air flows, which are formed from T-gratings 8 (box profiles are also possible) and which are provided on the upper cover panel 9 of the floor panel 5, whereby the floor panel 5 is provided with a downwardly extending depression opposite a door beam 11 which delimits the door opening 10 at the bottom. The T-gratings 8 are provided with flanges 13 which are aligned with the door beam 11 and between which and the door beam 11 a free space 14 through which cold air flows extends. The T-gratings 8 preferably protrude a maximum of 30 mm above the upper cover plate 9 of the base plate 5, compared to 40 mm for conventional containers.

The container has corner fittings 16 in its four lower corners 15, which have downward-facing bevels 18 in their areas 17 facing the side walls 3. These preferably run at angles of approximately 45 degrees to horizontal and vertical edges 19, 20 of the corner fittings 16. This makes it possible to lower the base plate 5.

The base plate 5 is designed in a compact construction with internal supports 21, 22 that protrude into a rigid foam 23 that fills the base plate 5. The upper cover plate 9 is provided with strip profiles 25 or T-profiles 26 on its underside 24 facing away from the T-gratings 8. The base plate 5 has box girders 28 on its lower cover plate 27 that run in the transverse direction of the interior 6. At least four of these are embedded in the rigid foam 23 for reasons of stability. To increase their flexural rigidity, the box girders 28 are in turn filled with a rigid foam 29.

Instead of using box girders 28, the lower cover plate 27 can also be designed as a corrugated sheet, the corrugations 34 of which run in the transverse directions of the interior 6. These corrugations 34 preferably have a depth of at least 5 mm in order to save construction height of the base plate 5.

The cover plate 4 is reinforced against deflections and twisting with at least one deep-drawn internal stiffening bead (not shown).

The front wall 1 is formed by a cooling device (not shown) with a maximum thickness of 336 mm, which is arranged in a frame and designed

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is designed in such a way that none of its components protrudes beyond the external dimensions of a container as defined by the ISO standard. The cooling device is provided with an air diversion 31 through which cooling air flows (a so-called “curved
kick-plate"), through which the cooling air from the cooling device is introduced into the channels 7 of the base plate 5 and from there can be diverted into areas of the doors 2, the vertical front wall 1 and the side walls 3.
Both the front wall 1 and the doors 2 closing the interior 6 are provided on their inner surfaces 32, 33 facing the interior 6 with
provided with vertically recessed beads 34, 35 in the inner surfaces 32, 33, which run vertically and form channels through which cooling air flows in relation to a charge deposited on them. The inner surfaces 32, 33 can also form inwardly directed deep-drawn beads. The side walls 3 are provided with recesses 42 in their edge areas facing the doors.
which in the area of the door seals 43 provided there are
Form channels through which cooling air flows. Since the area of the door seals 43 in a container is always the warmest, the supply of cooling air is
Cooling air is particularly beneficial.

The doors 2 are provided with external hinges 36, which extend beyond the doors towards their outer sides. This makes it possible
It is possible to open the doors 2 completely when opening them so that when loading the interior 2, for example when using a
The recess to the rear corner fittings is a maximum of 55 mm, so that the doors can be optimally
are protected against transverse racking forces and the opening angle of 370°
preserved.

The doors 2 have bevels 39 in the area of the adjacent upper corner fittings 37 of the container together with their fillings 38,

which increases the clear height between the door frame 11 and the upper limit 40 of the interior. This allows for
The full height can be used during the unloading process by
Forklift truck must drive over the door beam 11 into the interior 6 and only there the lowering 12 beginning behind the lower corner fittings 16
to reach and there is enough space to handle the load.

The floor plate 5 is provided with a condensate draining system from the loading area and preventing the ingress of water and dirt from the outside.
automatic drainage device 41.

Claims (17)

· Attorneys at Law Wolf-Dietrich Gösch & H. Andreas Schlunk Ballindamro 13 20095 Hamburg German Patent Office
Zweibrückenstrasse 12 80331 Munich Lawyers H. Andreas Schlunk 20095 Hamburg Ballindamm 13 Court Box 138 Telephone *040/33 30 Fax 040/33 30 15 Accounts: Dslbrück & Co. (bank code 200 203 S3) 24 Postbank Hamburg (bank code 200 100 20) 487 000-205 Dresdner Bank (bank code 200 800 00) 504 204 VAT ID No. DE 169 03 36 company Graaff GmbH LK. Heinrich-Nagel-Strasse 31008Elze Large capacity refrigerated container Hamburg, 02.12.1996 Our reference: 00226-66/g/ro GR 7 D Gbm Protection claims: 1. Large-capacity refrigerated container with an interior enclosed by a front wall, doors, side walls, cover and floor panels, in which the floor panel is provided with channels through which cooling air flows in a sandwich construction, which are made of T-gratings or hollow profiles, which · are provided on the upper cover plate of the base plate, characterized in that the base plate (5) has a depression (12) running downwards relative to a door beam (11) which delimits the door opening (10) at the bottom. 2. Large-capacity refrigerated container according to claim 1, characterized in that the T-gratings (8) have flanges (13) which are aligned with the door beam (11). 3. Large-capacity refrigerated container according to claim 1 and 2, characterized in that the T-gratings (8) protrude beyond the upper cover plate (9) by a maximum of 30 mm. 4. Large-capacity refrigerated container according to claims 1 to 3, characterized in that it is provided with corner fittings (16) on its lower four corners (15), which are provided with downwardly directed bevels (18) in their areas (17) facing the side walls (3). 5. Large-capacity refrigerated container according to claims 1 to 4, characterized in that the bevels (18) run at angles of approximately 45 degrees to horizontal and vertical edges (19, 20) of the corner fittings (16). 6. Large-capacity refrigerated container according to claims 1 to 5, characterized in that the base plate (5) is designed in a compact construction with internal supports (21, 22) which are embedded in a rigid foam (29) filling the base plate (5). 7. Large-capacity refrigerated container according to claims 1 to 6, characterized in that the upper cover plate (9) on its side facing away from the T-gratings (8) The underside (24) is provided with band profiles (25) or T-profiles (26). 8. Large-capacity refrigerated container according to claims 1 to 7, characterized in that the base plate (5) is provided on its lower cover plate (27) with box girders (28) running in transverse directions of the interior (6). 9. Large-capacity refrigerated container according to claims 1 to 8, characterized in that the base plate (5) is provided with at least four box girders (28). 10. Device according to claims 1 to 9, characterized in that the box supports (28) are foamed with a StaiTschaiim (29). 11. Device according to claims 1 to 5 and 7, characterized in that the lower cover plate (27) is designed as a corrugated sheet provided with beads (34) running in the transverse directions of the inner wall (6). 12. Device according to claim 11, characterized in that the beaded sheet has bead depths of at least 5 mm. 13. Large-capacity refrigerated container according to claims 1 to 12, characterized in that the front wall (1) is formed by a cooling device and the air outlet openings are arranged in such a way that an air diversion (31) arranged adjacent to the base plate (5) diverts the cooling air flowing out of the device. 14. Large-capacity refrigerated container according to claims 1 to 3, characterized in that the front wall (1) and the doors (2) closing the interior (6) are provided on their inner surfaces (32, 33) facing the interior (6) with beads (34, 35) which are recessed into the inner surfaces (32, 33) and form channels through which cooling air flows or deep-drawn, inward-facing beads in relation to a load of cooling air deposited on them. 15. Large refrigerated container according to claims 1 to 14, characterized in that the doors (2) are provided with external hinges (36) which project rearward beyond the doors in the direction of their outer sides 16. Large-capacity refrigerated container according to claims 1 to 15, characterized in that in the area of the upper corner fittings (37) adjacent to them, the doors (2) and their fillings (38) have upper bevels (39) which increase a clear height between the door frame (11) and the upper boundary (40) of the interior (6) opposite them. 17. Large-capacity refrigerated container according to claims 1 to 16, characterized in that the base plate (5) is provided with at least one automatic drainage device (41) which drains condensation from the interior (6) and prevents the ingress of water and dirt from the outside.