WO2016087211A1

WO2016087211A1 - Switchgear cabinet/switchbox exhibiting improved heat dissipation

Info

Publication number: WO2016087211A1
Application number: PCT/EP2015/077021
Authority: WO
Inventors: Werner SIEGL
Original assignee: Eaton Industries (Austria) Gmbh
Priority date: 2014-12-04
Filing date: 2015-11-18
Publication date: 2016-06-09
Also published as: EP3227978A1

Abstract

Disclosed is a switchgear cabinet/switchbox (1a..1d) comprising a housing (2) and an electric or electronic device (3) in the housing. The switchgear cabinet/switchbox (1a..1d) additionally comprises a plurality of heat conducting plates (4), each of which individually penetrates the housing (2) in an uninterrupted manner through slot-shaped holes in a housing wall and protrudes beyond said housing wall both inward and outward.

Description

Control cabinet / control box with improved heat dissipation

TECHNICAL AREA

The invention relates to a control cabinet / control box comprising a housing and an electrical or electronic device disposed therein.

PRIOR ART A control cabinet / control box of the type mentioned is basically known.

For example, it serves to accommodate circuit breakers, contactors, controls, power supplies and the like. In operation, considerable amounts of waste heat are produced inside a cabinet / switchbox, which must be dissipated to the outside to keep the temperature inside the cabinet below a certain level.

The cooling of control cabinets / control boxes usually takes place via the natural radiation of the outer walls and doors of the housing, on the outside arranged cooling fins, on the inside of the housing mounted heat conducting plates, ventilation inlets and outlets with and without forced ventilation (fans) or built-in or built chillers ( air conditioners).

The dissipated amount of heat restricts the site of

Cabinets / switch boxes in so far as from a certain heat dissipated power loss fans or refrigerators are needed to cope with the removal of heat can. With cooling fins and natural ventilation, this is only possible to a lesser extent. Fans and refrigerators, however, produce noise, which is why control cabinets / control boxes often can not be installed in rooms where people spend a long time. Even a sustained noise only low volume can be extremely disturbing or even health-damaging consequences. moreover Fans and chillers consume a considerable amount of electrical energy, especially when in continuous operation.

DISCLOSURE OF THE INVENTION

An object of the invention is therefore to provide an improved

Specify control cabinet / control box. In particular, the removal of heat should be improved without causing any (noteworthy)

Noise is coming. Furthermore, the removal of heat

especially energy-saving.

The object of the invention is achieved with a control cabinet / control box of the type mentioned, in which a plurality Wärmeleitbleche are provided which are each uninterrupted and individually guided through slot-shaped recesses in a housing wall of the housing and protrude inwardly and outwardly beyond this housing wall.

In this way, the heat generated in a control cabinet / control box can be very effectively transported to the outside, as this through the inside

arranged cooling surface is on the one hand well received, on the other hand, because of the uninterrupted heat conducting plates but also transported well to the outside and is discharged through the provided there cooling surface to the ambient air. A significant noise emission does not occur. Because of the improved cooling can be dispensed with additional units such as fans or refrigerators in many cases, whereby electrical energy is saved. In addition, the measures taken are easy to manufacture, since only plates must be inserted through recesses in the housing wall. Advantageously, the heat conducting plates are clamped in the recesses by providing a corresponding fit, so that no further mounting means are necessary.

Of course, the Wärmeleitbleche but also additionally secured or mounted in any other way, for example by gluing.

The term "slot-shaped" means in the context of the invention, in particular, a height / width ratio of greater than or equal to 50. That is, the slot is significantly wider than the slot height associated slot height. In particular, the heat conducting plates have a substantially rectangular cross-section, wherein edges may be broken or rounded. In addition to the term "Wärmeleitblech" also the term "heat conduction" can be used synonymously. Further advantageous embodiments and modifications of the invention will become apparent from the dependent claims and from the description in conjunction with the figures.

It is favorable if the housing wall between two Wärmeleitblechen

is continuous or uninterrupted. In this way, the housing is easy to manufacture and stable.

It is advantageous if the electrical or electronic device is thermally conductively connected to at least one of the heat conducting plates. In this way, the removal of heat is more effective. In particular, electrical or electronic devices may be connected to a heat conduction plate or more Wärmeleitblechen that produce a lot of waste heat.

In a further advantageous embodiment of the cabinet / control box two heat conducting plates are only through the housing and, if that

electronic device is thermally conductively connected to these Wärmeleitblechen, fixed in position relative to each other by the connection to the electrical or electronic device. That is, the Wärmeleitbleche are spaced only by the housing and possibly also by the electrical or electronic device to which they are connected. Otherwise, the Wärmeleitbleche in this embodiment, no connection with each other. In this way, the installation of Wärmeleitbleche in the housing is particularly simple. It is also favorable if the housing is made watertight and / or gas-tight at least in the area of the heat-conducting sheets. In this way, the

Control cabinet / control box can also be installed in exposed rooms or environments.

It is favorable in the above context, if in the region of the recess, a seal between a heat conducting plate and the housing is arranged. On In this way, gaps between the Wärmeleitblechen and the housing can be compensated or sealed.

But it is also advantageous if the housing is painted and a gap between the recess and the heat-conducting is sealed by the paint, in particular only by the paint. A separate seal is not necessary, making the structure of the cabinet / control box designed particularly simple.

It is particularly advantageous in the above context, when the paint seals two facing surfaces of a Wärmeleitblechs and the housing wall like a groove. This means that the housing is painted after mounting the heat conducting plates. A method of manufacturing a control cabinet / control box may therefore comprise the following steps:

Providing a housing with a plurality of slot-shaped recesses in a housing wall,

Mounting a plurality of heat conducting plates, each of which is guided without interruption and individually through the slot-shaped recesses and projecting inwards and outwards over the housing wall,

Painting the housing and the Wärmeleitbleche, wherein the paint seals two facing surfaces of a Wärmeleitblechs and the housing wall like a groove, and

Mounting an electrical or electronic device in the control cabinet. The painting can generally be done inside and / or outside. In particular, the paint can also help to fix the heat conduction in the housing, in which case coatings are preferably used with good adhesive properties and high mechanical stability. In this context is also a powder coating as

To understand "lacquer layer".

It is particularly advantageous in the above context, if the heat conducting plates are unwetted by the paint of the housing, but this in the field of

Compress feedthroughs through the housing wall. That means that

Housing is painted before installing the heat conducting. A method of manufacturing a control cabinet / control box may therefore comprise the following steps: Providing a painted housing with several slit-shaped

Recesses in a housing wall,

Mounting a plurality Wärmeleitbleche that are each uninterrupted and individually guided through the slot-shaped recesses and protrude inwards and outwards over the housing wall, the heat conducting plates compress the paint in the field through the housing wall, and

Mounting an electrical or electronic device in the control cabinet. Again, the coating can generally be done inside and / or outside and also help to fix the heat conduction in the housing, again preferably paints with good adhesive properties and high mechanical stability can be used. In this context, again a powder coating is to be understood as a "lacquer layer".

It is also beneficial if the heat conducting plates are made of aluminum, copper or steel. These materials have a good thermal conductivity and are therefore particularly well suited for the proposed purposes.

Finally, it is also favorable if the heat conducting plates are arranged on a cover detachably fastened to the housing. In this way, the production or assembly of the cabinet / control box under certain circumstances in a simpler manner possible, for example, if an electrical or electronic device to be connected to the Wärmeleitblechen.

BRIEF DESCRIPTION OF THE FIGURES

The present invention will be explained in more detail with reference to the exemplary embodiments indicated in the schematic figures of the drawing. 1 shows an exemplary control cabinet / Schalkasten obliquely from above.

Fig. 2 the cabinet / Schalkasten of Figure 1 partially ..;

Figure 3 is similar to Figure 2, with only an electrical / electronic device which is connected to the Wärmeleitblechen. 4 shows an exemplary control cabinet / Schalkasten with overhead straight Wärmeleitblechen;

5 shows an exemplary cabinet / Schalkasten with overhead

Angled Wärmeleitblechen; a detail of a housing in section, which after assembly of the

Wärmeleitbleche was painted;

7 shows a detail of a housing in section, the prior to assembly of

Wärmeleitbleche was painted;

Fig. 8 is a housing cover obliquely from above and Fig. 9, the housing cover of Fig. 8 in an oblique section. DETAILED DESCRIPTION OF THE INVENTION Figures 1 and 2 show a first example of one

Control cabinet / control box 1 a with a housing 2 and disposed therein electrical or electronic device 3, Fig. 1 obliquely from above and Fig. 2 also obliquely from above, but partially cut. In addition to the components already mentioned, the control cabinet / control box 1 a comprises a plurality of heat conducting plates 4, which are each uninterrupted and individually guided through slot-shaped recesses in a housing wall of the housing 2 and protrude inwardly and outwardly beyond this housing wall. By the

Wärmeleitbleche 4 is produced in the interior of the housing 2 produced waste heat efficiently to the outside and there, in the specific example, in particular by convection, are released to the ambient air.

In the example shown in Figures 1 and 2, the electric or

electronic device 3 is not connected to the Wärmeleitblechen 4. However, this is not mandatory for the invention, but rather is also conceivable that the electrical or electronic device 3 is thermally conductively connected to at least one of the heat conducting plates 4, as shown for the cabinet / switch box 1 b in FIG. In this way, that of the electric or Electronic device 3 produced waste heat can be directed more efficiently to the outside.

It is advantageous if two Wärmeleitbleche 4 only through the housing 2 and, if the electronic device 3 as in the case of Fig. 3 with these

Wärmeleitblechen 4 is thermally conductively connected by the connection to the electrical or electronic device 3 are fixed in position relative to each other. This means that the heat conducting plates 4 are spaced only by the housing 2 (see FIGS. 1 and 2) or additionally also in the region of the electrical or

electronic device 3 (see Fig. 3). Otherwise, the Wärmeleitbleche 4 no connection with each other. In this way, the assembly is the

Wärmeleitbleche 4 in the housing 2 particularly simple.

In the example shown in Figures 1 and 2, the heat conducting plates 4 are arranged laterally on the housing 2 and additionally angled on the outside. However, this is also not mandatory for the invention. Rather, it is also conceivable that the heat conducting plates 4 are arranged on another side of the housing 2 and / or run straight. Fig. 4 shows an example of this

Cabinet / control box 1 c, are arranged at the straight heat conducting plates 4 at the top.

In general, it may be advantageous if the housing 2 is designed to be watertight and / or gas-tight at least in the region of the heat-conducting sheets 4. In a particularly advantageous embodiment, this is achieved in that the housing 2 is painted and a gap between the recess and the heat-conducting sheet 4 is sealed by the paint 6, in particular only by the paint.

Fig. 6 shows a first example in the form of an enlarged section in section. Specifically, two arranged in the housing 2 Wärmeleitbleche 4 are shown, which are covered by a lacquer layer 6. In this example, the paint 6 seals two facing surfaces of a Wärmeleitblechs 4 and the housing wall in the form of a groove. That is, the housing 2 is painted after mounting the heat conducting sheets 4. A method for producing a control cabinet / control box 1 a..1d, therefore, may include the following steps: Providing a housing 2 with a plurality of slot-shaped recesses in a housing wall,

Mounting a plurality of heat conducting plates 4, which are each guided without interruption and individually through the slot-shaped recesses and protrude inwards and outwards over the housing wall,

Painting the housing 2 and the Wärmeleitbleche 4, wherein the paint 6, two facing surfaces of a Wärmeleitblechs 4und the housing wall seals like a groove, and

Mounting an electrical or electronic device 3 in

Control cabinet / control box 1 a..1 d.

Alternatively, however, it is also conceivable that the heat conducting plates 4 from the lacquer 6 of the

Housing 2 are unwetted, but this compress in the area of the passages through the housing wall, as shown by way of example in FIG. 7. That is, the housing 2 is painted prior to assembly of the heat conducting sheets 4.

A method for producing a control cabinet / control box 1 a..1 d, may therefore comprise the following steps:

Providing a painted housing 2 with a plurality of slot-shaped recesses in a housing wall,

Assembly of a plurality of heat conducting plates 4, which are each uninterrupted and individually guided through the slot-shaped recesses and protrude inwardly and outwardly beyond the housing wall, wherein the heat conducting 4 compress the paint in the field through the housing wall, and

Mounting an electrical or electronic device 3 in

Control cabinet / control box 1 a..1 d.

In both cases, the seal between the Wärmeleitblechen 4 and the housing 2 takes place only through the paint layer 6. It is also conceivable, however, that alternatively or additionally other measures are taken to seal. For example, in the region of the recess, a seal can be arranged between the at least one heat-conducting sheet 4 and the housing, whereby an arrangement similar to FIG. 7 is achieved. In general, the housing 2 may be painted on the outside and / or inside. For the purposes of the invention, lacquer is also understood, for example, to mean a powder coating or another coating for protecting the housing 2.

From Figures 6 and 7 also shows that the heat conducting plates 4 can protrude differently inward and outward over the housing wall. Due to better heat transfer, a smaller heat transfer surface may be required on one side, for example, when convection occurs on one side but not or only slightly on the other

Dimensions. From the previous figures also shows that the housing wall between two Wärmeleitblechen 4 is continuous or uninterrupted. Although this is advantageous because the housing 2 is thereby easy to manufacture and stable. It is also conceivable, of course, that between the Wärmeleitblechen 4 still others

Recesses or bushings are arranged. Generally, the heat conducting plates 4 may be made of aluminum, copper or steel, for example, and clamped only in the housing 2 or by

additional measures must be fixed. For example, these can be glued, or can also contribute a lacquer layer 6 for fixing the heat conducting 4.

Finally, FIGS. 8 and 9 show an example in which the heat-conducting sheets 4 are arranged on a cover 8 detachably fastened to the housing 2, FIG. 8 obliquely from above, FIG. 9 in an oblique cut. For example, the cover may form a housing wall, for example a side wall, or only a part thereof. In the concrete example illustrated, the cover 8 has holes for mounting the same with screws. Of course, the cover 8 but also be attached in other ways, for example by means of a

snap

Finally, it is noted that the drawn arrangements are not

are necessarily shown to scale and therefore may also have other proportions. Furthermore, a control cabinet / control box 1 a..1 d also include more or fewer components than shown. Location information (eg "top", "bottom", "Left", "right", etc.) are based on the respective figure described and are in a change in position of the cabinet / control box 1 a..1 d mutatis mutandis to adapt to the new situation. Finally, it is noted that the above refinements and developments of the invention can be combined in any desired manner. For example, the arrangement according to FIG. 3 can also be designed with heat-conducting sheets 4 pointing upwards. Generally, the are also suitable

Embodiments according to Figures 6 to 9 for any arrangements of

Heat conducting sheets 4.

Claims

claims

1 . Control cabinet / control box (1 a..1 d), comprising

a housing (2) and

- An electrical or electronic device (3) arranged therein, characterized by

a plurality of heat conducting plates (4), each of which is guided without interruption and individually through slot-shaped recesses in a housing wall of the housing (2) and projecting inwardly and outwardly beyond this housing wall.

2. control cabinet / control box (1 a..1d) according to claim 1, characterized

characterized in that the housing wall between two Wärmeleitblechen (4) is continuous or uninterrupted.

3. control cabinet / control box (1 a..1d) according to claim 1 or 2, characterized in that the electrical or electronic device (3) with at least one of the heat conducting plates (4) is thermally conductively connected.

4. Control cabinet / control box (1 a..1 d) according to one of claims 1 to 3, characterized in that two Wärmeleitbleche (4) only by the housing (2) and, if the electronic device (3) with these

Wärmeleitblechen (4) is thermally conductively connected by the connection to the electrical or electronic device (3) are fixed in position relative to each other.

5. switchgear cabinet / control box (1 a..1 d) according to one of claims 1 to 4, characterized in that the housing (2) at least in the region of the heat conducting plates (4) is waterproof and / or gas-tight.

6. switchgear cabinet / control box (1 a..1d) according to claim 5, characterized in that in the region of the recess, a seal between the at least one heat conducting plate (4) and the housing is arranged.

7. control cabinet / control box (1 a..1d) according to claim 5, characterized

in that the housing (2) is painted and a gap between the recess and the heat-conducting sheet (4) is sealed by the lacquer (6).

8. control cabinet / control box (1 a..1d) according to claim 7, characterized

characterized in that the lacquer (6) seals two facing surfaces of a Wärmeleitblechs (4) and the housing wall like a groove.

9. control cabinet / control box (1 a..1 d) according to claim 7, characterized

characterized in that the heat conducting plates (4) are unwetted by the lacquer (6) of the housing (2), but in the area of the passages through the

Compress housing wall.

10. Control cabinet / control box (1 a..1 d) according to any one of claims 1 to 9, characterized in that the heat conducting plates (4) made of aluminum, copper or steel are made.

1 1. Control cabinet / control box (1 a..1 d) according to one of claims 1 to 10, characterized in that the Wärmeleitbleche (4) on a housing (2) releasably secured cover (8) are arranged.