Casing wall for casing and / or door of thereof, especially local area network or cabel distribution casing, for receiving electrical and / or electronic assemblies

Description

The invention relates to a cabinet body wall for a cabinet, in particular a network or cable distribution cabinet accommodating electrical and / or electronic units, and / or to the door of this cabinet, which cabinet body wall has an outer cabinet body wall and an inner cabinet body wall arranged at a distance therefrom, where the inner cabinet body wall is designed as a heat-conducting wall. The invention also relates to a cabinet, in particular a cable distribution cabinet or a local network distribution cabinet for accommodating electrical and / or electronic units, with a cabinet body, a roof and optionally a door, where the cabinet body has at least one cabinet body outer wall and one cabinet body inner wall. Such a cabinet body wall or a cable distribution cabinet made from such a cabinet body wall is known from DE-PS 36 14 725. Here, the cable distribution cabinet is designed as a casing and an installation opening is provided in the front side of the cabinet. A lockable cover is inserted into the installation opening and at least on the inner side of the cover and the rear wall of the casing, a partition is arranged at a distance, wherein intermediate spaces are provided between the partitions and the cover or the rear wall of the casing with upper and lower ventilation openings. The partition is designed as a guide plate which is mounted on the cover, on the rear wall of the casing and on the top of the casing with reinforcing ribs, edge profiles, spacers or the like.This allows for additional heat dissipation on wall surfaces that are particularly affected by higher temperatures due to solar radiation, since the double-walled design of the rear wall of the cabinet or the casing creates a chimney effect. This allows the increased outside temperature and the heat generated on the front and rear walls of the cabinet due to solar radiation to be dissipated extremely well, regardless of the actual ventilation. The known cabinet wall has proven very well, but it has become necessary to further develop it from a production technology perspective. The heat loss dissipation should also be improved, especially in relation to the components arranged in the interior of the cabinet, which generate significant heat. This is of particular importance in cases where ventilation openings on the cabinet have to be omitted, in particular to protect the components from dust. In such cases, the solution according to the invention is particularly justified. The object of the invention is to provide a cabinet body wall in which the heat loss dissipation from the interior of the cabinet - especially in the case of area network or cable distribution cabinets which are used to accommodate electrical and / or electronic units - is significantly improved, and where this cabinet body wall can be easily produced for different cabinet widths and depths and can be easily adapted to these varying dimensions. The solution to the problem according to the invention is a cabinet body wall for a cabinet, in particular a network or cable distribution cabinet accommodating electrical and / or electronic units, and / or for the door of this cabinet, which cabinet body wall has an outer wall of the cabinet body and an inner wall of the cabinet body arranged at a distance therefrom, wherein the inner wall of the cabinet body is designed as a heat-conducting wall, wherein a double-walled panel wall is attached to the inner wall of the cabinet body, which panel wall consists of a material that is a poor heat conductor and has an inner panel wall assigned to the inner wall of the cabinet body forming the outer wall of the cabinet body and an outer panel wall arranged at a distance therefrom, and wherein hollow spaces are located between the inner panel wall and the outer panel wall. The panels are preferably designed as hollow profile strips and have hollow spaces designed as continuous panel chambers, where the panels and thus the panel chambers are arranged in the longitudinal direction of the panel wall, and where the panel chambers of the panels are designed closed or open at their end sides and are optionally filled with closed-cell foam. With the help of these solutions according to the invention, it is possible to significantly improve the heat loss from the interior of the cabinet to the environment. This is achieved by the fact that the interior wall of the cabinet body, which is designed as a heat-conducting plate, first conducts the heat generated in the interior of the cabinet towards the poorly heat-conducting panel wall. In this case, the temperature of the panel wall advantageously changes, i.e. decreases, for example, due to the chimney effect created by the panel chambers.If the panel chambers are designed to be open at their ends, the air with a practically lower temperature can flow through these panel chambers without any problems and creates the aforementioned chimney effect. This leads to the panel wall being practically cooled and the heat loss occurring from the heat-conducting inner wall being easily dissipated. On the other hand, the panel wall with its low thermal conductivity ensures that, for example, solar radiation does not significantly affect the internal temperature of the cabinet. Since the panel wall practically acts as a thermal insulation layer, this is particularly true if the profile chambers are closed at the top and bottom, for example, so that the stagnant air in the panel chambers provides additional thermal insulation. Alternatively, it is also possible to fill the panel chambers with closed-cell foam to enhance the thermal insulation.However, the combination of the inner, heat-conducting cabinet wall and the outer, heat-insulating double-walled panel wall with poor heat-conducting properties allows the heat generated in the interior to be transferred to the environment on the one hand, and possible heating due to intense solar radiation can be prevented on the other. This is particularly important if electronic components are arranged in the interior of the cabinet, which require a dust-free environment. In this case, the heat generated by the electronic components cannot be dissipated using ventilation openings. In this case, ventilation must be provided in the interior of the cabinet, which conducts the circulated warm air to the outside via the heating housing walls. If such heat dissipation is still not sufficient in this way, a. HU 220 916 Bl installation of an additional air conditioning system, since it is necessary, especially when placing electronic components, to design the cabinet so that the temperature inside it does not exceed a certain value. This can be achieved in practice with the cabinet body wall according to the invention without the need for additional air conditioning measures. Naturally, the use of the cabinet body wall according to the invention is also advantageous in the production of area network distribution cabinets. It is also advantageous that the cabinet body wall according to the invention can be adapted to different conditions relatively easily, especially with regard to the width and depth dimensions of the cabinet. Accordingly, the cabinet body inner wall is formed as a heat-conducting sheet with a pre-selected size, and then the panel wall, with the panels that are separably interconnected, is adapted to the cabinet body inner wall and fastened thereto. In addition, the cabinet wall sizes that can be produced depend on the respective panel sizes in the sense that they can be produced in accordance with the grid steps specified by the panel sizes. In this way, the cabinet wall or panel wall consists of a number of interconnected panels determined according to the desired size. If, for example, a smaller width were desired, the corresponding number of panels can be removed.In any case, it is possible to adjust the cabinet wall or the panel wall attached to the inner wall of the cabinet body within the framework of the grid steps determined by the panel width in accordance with the requirements required at any time, or cabinet width and depth. Apart from this, the cabinet body wall according to the invention is relatively light, compared to known cabinet walls, which consist of, for example, two metal sheets. At the same time, satisfactory electromagnetic shielding can be achieved with the inner wall of the cabinet body, similarly to the previous ones, if it is made of metal. - The advantages of the invention can be summarized in all these. Further preferred embodiments are described below. Accordingly, the panel chambers are preferably designed as double L chambers, the shorter L leg of which rests on the inner wall of the cabinet body and the longer L leg of which is connected at a partition wall, where the double L chambers are arranged mirror-symmetrically with respect to the partition wall, and where the shorter L legs of the adjacent double L chambers resting on the cabinet body wall enclose a further hollow space between the panel inner wall and the inner wall of the cabinet body. This allows a particularly functional and stable structure to be achieved by means of panels formed from hollow profile strips. In particular, if the panel chambers are closed at the end side of the panels and a chimney effect is to be achieved at least by means of the further hollow spaces formed. This ensures that the panels and the panel wall are cooled sufficiently in all cases.It is also advantageous to provide dividing chambers extending between the panels and arranged in the longitudinal direction of the panel wall, which are designed as rectangular-profiled chambers with narrow side surfaces bounded by the panel outer wall and the panel inner wall, where the panel outer wall has longitudinal groove joints in the section of the dividing chamber to define the dividing plane between the panels connected to each other, and the two-part dividing chambers divided along the dividing planes are designed with their remaining U-ribs to accommodate the connecting elements for establishing the connection between the inner wall of the cabinet body and the panel wall fixed thereto. These dividing chambers consequently also serve to enable the panel wall to be designed to the desired width and depth of the cabinet body wall by allowing the panels to be separated from each other in the section of the dividing chambers along the dividing plane.Since the separation chambers are designed as rectangular chambers, two U-ribs are created during such a separation, which is usually carried out with a cutting tool. These U-ribs are suitable for receiving fasteners that secure the panel wall to the inner wall of the cabinet body. This makes it easy to separate the individual panels from each other and to select the desired size of the panel wall, since the panel outer wall in the section of the separation chambers has longitudinal groove joints to define the dividing planes between the interconnected panels. In this way, it is possible to separate the panels by cutting without damaging the panels. This is an important circumstance, since the panels perform the thermal insulation function of the cabinet body wall. For the same reason, the separation chambers are designed to be relatively narrow in order to avoid negative effects on heat dissipation.This is achieved by the narrow side surfaces of the separation chambers being formed by the panel outer wall and the panel inner wall. The wider side surfaces, on the other hand, are usually formed by the adjacent hollow profile strips or the panels. Consequently, the length of the wider side of the separation chamber, which is designed as a rectangular profile chamber, essentially corresponds to the thickness of the panel wall. The narrower side is accordingly designed to be smaller than the thickness of the panel wall. The panel wall can be assembled from panel wall parts which are connected to each other by means of grooves and tongues, where the grooves and tongues are designed together with the U-ribs to receive connecting elements on the end sections of the narrower sides of the panel wall parts, and where the panel wall parts consist of panels.In the case where the said U-ribs are also designed to accommodate the connecting elements between the inner wall of the cabinet body and the panel wall fixed thereto - similarly to the U-ribs formed during the division of the separation chambers - the connecting elements are designed as fixing strips inserted into the U-ribs and connected to the panel wall, which are fixed to the inner wall of the cabinet body. In this way, the panel wall, if it consists of panel wall parts, can be perfectly fixed to the inner wall of the cabinet body, since this fixing is independent of whether the connecting elements fix a panel or a panel wall part. The heat-conducting plate is preferably designed as a U-shaped metal plate, where the panel wall is the U. HU 220 916 Bl is arranged between the legs and is fixed at least on the U legs, and the panel wall is usually made of plastic, in particular colored PVC [poly(vinyl chloride)]. This eliminates the need for costly painting work. Finally, when producing a cabinet and its door formed from the cabinet body wall described in the description, the door is provided with a surrounding door insulation, where the door insulation has a metallized surface or an embedded metal fabric, which is at least partially in thermally conductive contact with the inner wall of the cabinet body. The invention will be described in more detail below with reference to an exemplary embodiment, with reference to the drawings. In the accompanying drawings, Figure 1 shows horizontal sections of cabinet body walls of different widths according to the invention, the Figure 2 is a horizontal section of a cabinet produced with a cabinet body wall according to the invention, Figure 3 is a schematic vertical section of the body of a cable distribution cabinet, Figure 4 is a schematic vertical section of the cover of another embodiment of a cable distribution cabinet. Figure 1 shows a cabinet body wall for producing the cabinet body and / or door of a cabinet, in particular a local area network or cable distribution cabinet. Figure 2 shows a local area network cabinet. This cabinet body wall has an outer wall 1 and an inner wall 2 arranged at a distance therefrom, the inner wall 2 being designed as a heat-conducting plate of a predetermined size. A double-walled panel wall 3 consisting of panels 3' that are separably connected to each other is fastened to the inner wall 2. The panel wall 3 has an inner panel wall 3a and an outer panel wall 3b arranged at a distance therefrom, which form the outer wall 1 of the cabinet body. The panel wall 3 is made of a material that is a poor heat conductor, in our embodiment made of plastic. The inner panel wall 3a and the outer panel wall 3b enclose hollow spaces. The panels 3' are designed as hollow profile strips and enclose hollow spaces 4 designed as panel chambers 4a. The panels 3' and thus the panel chambers 4a are arranged in the longitudinal direction of the panel wall 3, the panel chambers 4a being closed at the end sides of the panels 3' in the embodiment example.It is possible, however, that the panel chambers 4a remain open at these locations. If desired, they can also be filled with closed-cell foam. In any case, the panels 3' together form a thermal insulation layer. The panel chambers 4a are designed as double L-shaped chambers, the shorter L leg of which rests on the inner wall 2 and the longer L legs of which are connected at a partition wall, the double L chambers being designed mirror-symmetrically with respect to the partition wall 5. The short L legs resting on the inner wall 2 enclose a further hollow space 6 between the inner panel wall 3a and the inner wall 2 of the cabinet body. If the panel chambers 4a are closed at the end sides of the panels 3', a chimney effect is created in the hollow space when the inner wall 2 of the cabinet body heats up and the ambient air is colder. If the panel chamber 4a is designed open, this chimney effect is also created in these panel chambers 4a. This allows for effective dissipation of heat generated inside the cabinet with the cabinet body wall formed in this way.At the same time, the heating of the interior of the cabinet due to intense solar radiation can be prevented by the thermal insulation effect of the panel wall 3 and the panels 3'. Separating chambers 4b are formed between the panels 3' and arranged in the longitudinal direction of the panel wall 3. These separating chambers 4b are designed as rectangular-profile chambers with narrow side surfaces delimited by the panel outer wall 3b and the panel inner wall 3a, where the panel outer wall 3b has 7 longitudinal groove joints in the section of the separating chambers 4b along the dividing planes T between the interconnected panels 3'. The two remaining 8 U ribs of the two-part separating chambers 4b, divided or divisible along the dividing planes AT, are designed to receive the connecting elements between the inner wall 2 and the panel wall 3 fixed thereto. The division planes are particularly indicated in Figure 1 by dotted lines.The panel wall 3 in the embodiment is composed of several panel parts, which are connected to each other by means of grooves 9a and grooves 9b. The grooves 9a and grooves 9b, as well as the U ribs 8 for receiving connecting elements, are formed at the ends of the panel wall parts, on the narrow sides. The panel wall parts consist of panels 3'. The connecting elements arranged at the U ribs 8 connect the panel wall 3 or the corresponding panel wall part or the panels 3' to the inner wall 2. This is illustrated in particular in Figure 1. The connecting elements in the embodiment are fastening strips 10 inserted into the U ribs 8 and connected to the panel wall 3, which are connected to the inner wall 2. The fastening strips 10 are connected to the panel wall 3 by means of rivets, which simultaneously ensure the connection to the inner wall 2. This inner wall 2 is formed from a heat-conducting U-shaped metal sheet, where the panel wall 3 is arranged between the U legs 11 and is fixed on these U legs 11.In the embodiment example, the additional fastening of the panel wall 3 is ensured by rivets on the section of the U legs. Figure 2 shows the use of the previously described cabinet body wall for forming the wall and door of a local network distribution cabinet with a surrounding door insulation 12. The individual housing walls are screwed together with corner profiles 13. The door insulation is pulled onto one of these corner profiles 13. In the exemplary embodiment, the door insulation has a metallized surface or an embedded metal fabric, which is in partially thermally conductive contact with the inner wall 2. Since the corner profile 13 is made of metal in the exemplary embodiment, it consequently forms a metal bridge with the inner wall 2, which is also made of metal. In this way, not only is the electromagnetic shielding of the interior of the cabinet improved, but the heat loss in the cabinet is also more effectively dissipated. Figures 3 and 4 show a cable cabinet 14 with a cabinet body 15 and a roof 16, where the usual door is not provided. HU 220 916 Β1 is shown. The cabinet body 15 has an outer wall 1 and an inner wall 2. Between the outer wall 1 and the inner wall 2, a partition wall 17 forms an inner intermediate space 18 and an outer intermediate space 19. Lower ventilation openings 20 and upper ventilation openings 21 are provided for both intermediate spaces 18, 19. In this way, two independent cooling air flows can be guided through the intermediate spaces 18, 19. In this way, the cooling air guided through the outer intermediate space 19 can be utilized for the purpose of removing the heating of the outer wall 1 caused by solar radiation without the inner wall 2 and thus the electrical and / or electronic components heating up. Furthermore, the cooling air flow can remove the heat generated by the electrical and / or electronic components in the interior.The invention, due to the multilayer cabinet wall structure, makes it possible to achieve an insulating effect, in which the intermediate spaces provide passive cooling by means of air currents arising due to the chimney effect, similar to active cooling, which would, however, only be achieved by arranging air conveying devices. For example, with fans or blowers operating in the intermediate spaces, which cause an air flow from the lower ventilation openings towards the upper ventilation openings or vice versa. According to the invention, the outer wall 1, the inner wall 2, the partition wall 17 and both intermediate spaces 18, 19 run obliquely from one housing side to the other housing side - for example from the rear side of the housing to the front side of the housing or vice versa - at a predetermined angle of inclination, whereby the passive cooling and thus the cooling air currents due to the chimney effect can be optimized.The inclination for the cable distribution cabinet can be formed with the roof 16 or under the roof 16, where for example a cover can be arranged. The inclination angle α can be formed at most 45°, preferably between 10° and 20°. The lower ventilation openings 20 can be arranged in the section between the lower third of the respective outer wall 1 or inner wall 2 and the roof 16. The invention is based, among other things, on the recognition that, especially in wind-protected locations, on dark foundations (asphalt), the temperature directly above the ground is quite high and decreases with distance from the ground. Consequently, air extraction from near the ground for cooling the house - due to high outside temperatures - can have the opposite effect. For this reason, the lower ventilation openings 20 should be located at a suitable height above the ground for air intake, namely above the cabinet wall, for example the cabinet body wall and the door, and the lower third of the cabinet side walls.For a better cooling effect, the cooling air flows are guided through the roof section, the hottest part of the cable distribution cabinet 14. The air outlet openings, for example the upper ventilation openings 21, are always located above the air inlet and lower ventilation openings 20 in the case of passive cooling. According to one embodiment of the invention, the roof has an outer roof covering 23, an inner roof covering 24 and an intermediate roof covering 25, which form an outer intermediate space 26 and an inner intermediate space 27, where air inlet openings 28 are arranged on the side wall section of the roof and a protective cap covering air outlet openings 30 is arranged on the ridge of the roof or in the center of the roof. In this embodiment, the edge of the roof can be folded down, where the roof coverings 23, 24, 25 connect to the outer wall 1, the inner wall 2, the partition wall 17 and the intermediate spaces 26, 27 of the roof 16 connect to the intermediate spaces 18, 19 between the outer wall 1 and the outer wall 2, and if applicable, they connect similarly to the intermediate spaces formed in the door. The door preferably has an outer door wall, an inner door wall and an intermediate wall, which also form an outer intermediate space and an inner intermediate space, both intermediate spaces having lower and upper ventilation openings similar to the cabinet wall. This design of the door is not shown. According to a preferred embodiment of the invention, it is self-evident that the cabinet 15, similarly the roof 16 and / or the door are formed with the described multi-chamber wall, where the inner wall 2 is fixed to a double-walled panel wall 3, the panel wall 3 has an inner panel wall 3a assigned to the inner wall 2 and an outer panel wall 3b arranged at a distance therefrom, which form the outer wall 1, which consists of a poor thermal conductor material, and where hollow spaces 4 are formed between the inner panel wall 3a and the outer panel wall 3b, which form the above-mentioned intermediate spaces for passive or active air cooling.

Claims

PATENT CLAIMS 1. Cabinet body wall for a cabinet, in particular for a network or cable distribution cabinet accommodating electrical and / or electronic units, and / or for the door of this cabinet, which cabinet body wall has a cabinet body outer wall and a cabinet body inner wall arranged at a distance therefrom, wherein the cabinet body inner wall is designed as a heat-conducting wall, characterized in that a double-walled panel wall (3) is fixed to the cabinet body inner wall (2), which panel wall (3) consists of a poor heat-conducting material and has a panel inner wall (3a) forming the outer wall (1) of the cabinet body, assigned to the cabinet body inner wall (2) and a panel outer wall (3b) arranged at a distance therefrom, and wherein hollow spaces (4) are formed between the panel inner wall (3a) and the panel outer wall (3b) are located.

2. Cabinet body wall according to claim 1, characterized in that the panel wall (3) consists of panels (3') that are detachably connected to each other.

3. Cabinet body wall according to claim 2, characterized in that the panels (3') are designed as hollow profile strips and have hollow spaces (4) designed as continuous panel chambers (4a), wherein the panels (3') and thus the panel chambers (4a) are arranged in the longitudinal direction of the panel wall (3), and wherein the panel chambers (4a) are designed closed or open at the end sides of the panels (3') and are optionally filled with closed-cell foam.

4. Cabinet body wall according to claim 3, characterized in that the panel chambers (4a) are designed as double L chambers, the shorter L leg of which rests on the inner wall (2) of the cabinet body HU 220 916 Bl, and the longer L legs of which are connected at a partition wall (5), where the double-walled L chambers are designed mirror-symmetrically with respect to the partition wall (5), and where the shorter L legs of the adjacent double L chambers resting on the inner wall (2) of the cabinet body enclose a further hollow space (6) between the panel inner wall (3a) and the inner wall (2) of the cabinet body.

5. A cabinet body wall according to any one of claims 2-4, characterized in that separating chambers (4b) extending between the panels (3') and arranged in the longitudinal direction of the panel wall (3) are formed, which are formed as rectangular-profile chambers with narrow side surfaces bounded by the panel outer wall (3b) and the panel inner wall (3a), where the panel outer wall (3b) has longitudinal groove joints (7) defining a dividing plane (T) between the interconnected panels (3') in the section of the separating chambers (4b), and the two remaining U-ribs (8) of the separating chambers (4b) divided into two parts along the dividing plane (T) are designed to accommodate the connecting elements connecting the cabinet body inner wall (2) and the panel wall (3) fixed thereto.

6. A cabinet body wall according to any one of claims 1-5, characterized in that the panel wall (3) is composed of panel wall parts which are connected to each other by a groove (9a) and a tongue (9b) connection, where the grooves (9a) and the tongues (9b) together with the U-ribs (8) are designed to receive connecting elements at the ends of the narrower sides of the panel wall parts, and where the panel wall parts consist of panels (3').

7. Cabinet body wall according to claim 5 or 6, characterized in that the connecting elements are designed as fastening strips (10) inserted into the U-ribs (8) and connected to the panel wall (3), which are connected to the cabinet body inner wall (2).

8. Cabinet body wall according to any one of claims 1-7, characterized in that the cabinet body inner wall (2) formed as a heat-conducting sheet is formed as a U-shaped metal sheet, where the panel wall (3) is arranged between the U legs (11) and is fixed on the U legs (11).

9. Cabinet body wall according to any one of claims 1-8, characterized in that the panel wall (3) is made of plastic, in particular colored PVC [poly(vinyl chloride)].

10. Cabinet and door formed from a cabinet body wall according to any one of claims 1-9, characterized in that the door is provided with a door insulation (12) that is in at least partial thermally conductive contact with the cabinet body inner wall (2) and simultaneously provides electromagnetic shielding for the interior of the cabinet, and which has a metallized surface or an embedded metal fabric.

11. Cabinet, in particular cable distribution cabinet or area network distribution cabinet for accommodating electrical and / or electronic units, comprising a cabinet body (15), a roof (16) and optionally a door, wherein the cabinet body (15) has at least one cabinet body outer wall (1) and one cabinet body inner wall (2), characterized in that a partition wall (17) forming an inner intermediate space (18) and an outer intermediate space (19) is arranged between the cabinet body outer wall (1) and the cabinet body inner wall (2), and the intermediate spaces (18, 19) are provided with lower ventilation openings (20) and upper ventilation openings (21).

12. Cabinet according to claim 11, characterized in that the cabinet body outer wall (1), the cabinet body inner wall (2), the partition wall (17) and both intermediate spaces (18, 19) pass from one side of the cabinet body to the other side of the cabinet body with an inclination of angle a.

13. A cabinet according to any one of claims 11 or 12, characterized in that the inclination with the angle of inclination is formed by the roof (16), or a cover is advantageously arranged under the roof (16).

14. A cabinet according to any one of claims 11-13, characterized in that the angle of inclination is at most 45°, preferably between 10-20°.

15. A cabinet according to any one of claims 11-14, characterized in that the lower ventilation openings (20) are arranged between the lower third of the outer or inner wall (1,2) of the cabinet body and the roof.

16. A cabinet according to any one of claims 11-15, characterized in that in the two intermediate spaces (18, 19) or in one of them there are air conveying devices, for example fans or blowers, arranged to cause an air flow from the lower ventilation openings (20) towards the upper ventilation openings (21) or from the upper ventilation openings (21) towards the lower ventilation openings (20).

17. A cabinet according to any one of claims 11-16, characterized in that the roof (16) has an outer roof covering (23), an inner roof covering (24) and an intermediate roof covering (25), which form an outer intermediate space (26) and an inner intermediate space (27), where air inlet openings (28) are formed on the edge section of the roof and air outlet openings (30) covered with a protective cover (29) are formed on the roof ridge or in the center of the roof.

18. A cabinet according to any one of claims 11-17, characterized in that the roof edge is bent down and the roof coverings (23, 24, 25) are connected to the outer wall (1), inner wall (2), and partition wall (17) of the cabinet body, and the intermediate spaces (26, 27) of the roof (16) are connected to the intermediate spaces (18, 19) formed by the outer wall (1), inner wall (2), and partition wall (17) of the cabinet body.

19. A cabinet according to any one of claims 11-18, characterized in that the door has an outer door wall, an inner door wall and an intermediate wall arranged therebetween, which form an outer intermediate space and an inner intermediate space, and lower and upper ventilation openings are formed for both intermediate spaces.

20. The 11-19. A cabinet according to any one of claims 1 to 5, characterized in that a double-walled panel wall (3) is attached to the cabinet body (15) and / or the roof and / or the door to the inner wall (2) of the cabinet body and / or the inner roof surface (24) and / or the inner wall of the door, wherein the panel wall (3) made of a material with poor thermal conductivity has a panel inner wall (3a) associated with the inner wall (2) of the cabinet body and / or the inner roof surface (24) and / or the inner wall of the door, forming the outer wall (1) of the cabinet body, and a panel outer wall (3b) and / or an outer roof covering (23) and / or an outer door wall arranged at a distance therefrom, and wherein the hollow space of the panel inner wall (3a) and the panel outer wall (3b) is two (4) closes.