CN217336255U

CN217336255U - Cooler and cooled electrical device assembly

Info

Publication number: CN217336255U
Application number: CN202220417271.7U
Authority: CN
Inventors: 佩尔蒂·塞韦基维; 马尔库·塔利亚; 汉娜·拉皮诺亚
Original assignee: ABB Schweiz AG
Current assignee: ABB Schweiz AG
Priority date: 2021-03-01
Filing date: 2022-02-28
Publication date: 2022-08-30
Anticipated expiration: 2032-02-28
Also published as: DE202022101010U1; FI12921Y1

Abstract

The utility model provides a cooler, this cooler include body portion (92) and a plurality of cooling fin (94), a plurality of cooling fin (94) have entry edge (95) and exit edge (98) respectively, this entry edge (95) have first end (96) and with first end (96) at a distance second end (97) of department, this exit edge (98) have first end (99) and with first end (99) at a distance second end (100) of department. In each cooling fin (94), the second end (97) of the inlet edge (95) is closer to the first end (99) of the outlet edge (98) than the first end (96) of the inlet edge (95) in the fin direction and the second end (100) of the outlet edge (98) is farther from the first end (96) of the inlet edge (95) than the first end (99) of the outlet edge (98) in the fin direction.

Description

Cooler and cooled electrical device assembly

Technical Field

The utility model relates to a cooler and cooled electrical device subassembly.

Background

It is known to provide a cooler comprising a body portion and a number of cooling fins extending from the body portion of the cooler. Each cooling fin has an inlet edge with a first end and a second end at a distance from the first end, and an outlet edge with a first end and a second end at a distance from the first end. The direction between the first end of the inlet edge and the first end of the outlet edge is the fin direction. A problem of the known cooler is that the cooling effect of the body part of the cooler is poor.

SUMMERY OF THE UTILITY MODEL

The object of the invention is to provide a cooler in which the cooling of the body part is more efficient than before. The utility model aims at providing a cooler as follows.

The utility model discloses a based on following fact: in each cooling fin, the second end of the inlet edge is closer to the first end of the outlet edge than the first end of the inlet edge in the fin direction and the second end of the outlet edge is farther from the first end of the inlet edge than the first end of the outlet edge in the fin direction.

An advantage of the cooler according to the invention is that the cooling of the body part of the cooler is more efficient than before due to the shape of the cooling fins.

Drawings

The invention will now be described in more detail in connection with preferred embodiments and with reference to the accompanying drawings, in which:

fig. 1 shows a direct view side view of a cooler according to an embodiment of the present invention;

fig. 2 shows a schematic diagram of a cross-section of a cooled electrical device assembly according to an embodiment of the present invention;

fig. 3 shows a direct view top view of a cooled electrical device assembly according to an embodiment of the invention; and

fig. 4 shows a cross-section of the cooled electrical device assembly of fig. 3.

Detailed Description

According to an embodiment of the invention, the cooler comprises a body part 92 of the cooler and a plurality of cooling fins 94, the plurality of cooling fins 94 extending from the body part 92 of the cooler. As coolant in the cooler, it is possible to use, for example, air or another gaseous coolant.

Fig. 1 shows a side view of a cooler according to an embodiment of the invention. Due to the point of view, the figure shows only one of several cooling fins 94. As seen in fig. 1, each cooling fin 94 has an inlet edge 95 and an outlet edge 98, the inlet edge 95 having a first end 96 and a second end 97 at a distance from the first end 96, the outlet edge 98 having a first end 99 and a second end 100 at a distance from the first end 99. The direction between the first end 96 of the inlet edge 95 and the first end 99 of the outlet edge 98 is the fin direction. In the example of fig. 1, the edge between the first end 96 of the inlet edge 95 and the first end 99 of the outlet edge 98 of each cooling fin 94 is in full contact with the body portion 92 of the cooler. Thus, the second end 97 of the inlet edge 95 and the second end 100 of the outlet edge 98 of each cooling fin 94 extend at a distance from the body portion 92 of the cooler.

In an alternative embodiment, only a portion of the edge between the first end 96 of the inlet edge 95 and the first end 99 of the outlet edge 98 of each cooling fin 94 is in contact with the body portion 92 of the cooler.

As seen in fig. 1, the second end 97 of the inlet edge 95 of each cooling fin 94 is closer in the fin direction to the first end 99 of the outlet edge 98 than the first end 96 of the inlet edge 95. Thus, the inlet edge 95 of each cooling fin 94 is in a direction diverging from the perpendicular direction relative to the fin direction.

In other words, compared to an arrangement comprising cooling fins 94 that are rectangular in shape, fin material has been removed from the inlet edge 95 of each cooling fin 94 of the cooler according to the invention. The solution according to the invention makes it possible to save on material usage when manufacturing the cooler without significantly impairing the heat transfer power of the cooler.

As further seen in fig. 1, the second end 100 of the outlet edge 98 of each cooling fin 94 is further from the first end 96 of the inlet edge 95 in the fin direction than the first end 99 of the outlet edge 98. The outlet edge 98 of each cooling fin 94 is then non-perpendicular with respect to the fin direction, but in contrast to the cooling fin arrangement of known coolers in which the outlet edge of each cooling fin is perpendicular with respect to the fin direction, fin material is added to the outlet edge 98 of the cooling fin 94. The arrangement according to the invention makes it possible to increase the heat transfer capacity of the cooler compared to known coolers.

Overall, when compared to the rectangular shaped cooling fins 94, due to the following shape of the cooling fins 94: there is no fin material on the inlet edges 95 of each cooling fin 94 that does not effectively cool the body portion 92 of the cooler, and there is more fin material on the outlet edges 98 of each cooling fin 94 to increase the cooling power of the cooler, the cooling of the body portion 92 of the cooler according to the present invention is more effective than before.

Each cooling fin 94 of the cooler according to the embodiment of the invention shown in fig. 1 is flat, so the plane of the cooling fin 94 extending from the body portion 92, which plane is bounded by the inlet edge 95 and the outlet edge 98 and which plane defines the cooling fin plane, is flat. The thickness dimension of each cooling fin 94 is in the direction normal to the plane of the cooling fin. In other words, the thickness dimension of each cooling fin 94 is small relative to the other dimensions of the cooling fin 94.

The shape of each cooling fin 94 of the cooler according to the embodiment of the invention shown in fig. 1 is polygonal, in more detail rectangular, so that the inlet edge 95 and the outlet edge 98 are parallel to each other. In the example of fig. 1, the shape of each cooling fin 94 is that of a parallelogram, in more detail a diagonal parallelogram. The edge between the first end 96 of the inlet edge 95 and the first end 99 of the outlet edge 98 and the edge between the second end 97 of the inlet edge 95 and the second end 100 of the outlet edge 98 are parallel to each other. The angle between the edges of a diagonal parallelogram, i.e. the interior angle of the parallelogram, is different from a right angle.

In an alternative embodiment, the shape of the cooling fins 94 of the cooler differs from the shape shown in fig. 1, for example so that the inlet edges 95 and/or the outlet edges 98 of the cooling fins 94 are not straight or so that the position of the second ends 97 of the inlet edges 95 and/or the second ends 100 of the outlet edges 98 differs from the position shown in the figures. Thus, the cooling fins 94 of the cooler may then have, for example, a pentagonal or hexagonal shape or a trapezoidal shape or diverge from a plane.

The surface of the body portion 92 of the cooler according to the embodiment of the present invention to which the cooling fins 94 shown in fig. 1 are fastened is flat in its shape and defines a body portion plane, with respect to which the cooling fin plane of each cooling fin 94 is located in the normal direction. In an alternative embodiment, the orientation of each cooling fin 94 relative to the body portion 92 of the cooler is different from the example shown in FIG. 1, e.g., so that the cooling fin plane is at an angle of 70 ° relative to the body portion plane.

According to an embodiment of the invention, the cooling fins 94 extend substantially parallel from the body portion 92 of the cooler. In other words, the cooling fin planes are parallel to each other. In an alternative embodiment, the cooling fin planes diverge from each other.

Fig. 3 and 4 show a cooled electrical device assembly according to an embodiment of the invention. All of the elements shown in the figures are not necessarily essential to the invention. The cooled electrical device assembly comprises a housing 2, which housing 2 comprises a cooling channel 4, which cooling channel 4 is arranged for the flow of a coolant, such as air or some other gaseous coolant. The cooling channel 4 has an inlet end 41 adapted to feeding cooling air into the cooling channel 4 and an outlet end 42 adapted to removing cooling air from the cooling channel 4. The flow direction of the cooling air is from the inlet end 41 towards the outlet end 42 of the cooling channel 4.

The cooled electrical device assembly shown in fig. 3 and 4 comprises a cooler according to the above described embodiments. The cooling fins 94 of the cooler form fin channels between the cooling fins, which define the fin sections 49 of the cooling channel 4. Each fin channel has an inlet end 301 adapted to supply cooling air into the fin channel and an outlet end 302 adapted to remove cooling air from the fin channel.

Fig. 2 shows a schematic view of a vertical cross-section of a cooled electrical device assembly according to an embodiment of the invention at the point where the cooling fins 94 closest to the inlet end of the cooling channel 4 are located. As observed in fig. 2, the shape of the cooling fins 94 of the cooler according to the invention enables the cooling channel 4 to be more spacious than before at the point of entry of the fin section 49. In other words, the flow of cooling air in the cooling channel 4 has more space before it is diverted to the fin sections 49 via the inlet end 301 of each fin channel. The flow of cooling air into the fin sections 49 is then facilitated.

According to the embodiment of the invention shown in fig. 3 and 4, the cooling channel 4 comprises a first cooling channel section 401, a second cooling channel section 402 and a third cooling channel section 403, which are parallel cooling channel sections, which may be channels separated by e.g. walls or equivalent structures, whereby each of the parallel cooling channel sections is arranged to convey parallel partial flows of the cooling air flow through the parallel cooling channel sections. In an alternative embodiment, the cooling channel 4 does not comprise

cooling channel sections

401, 402, 403.

The cooled electrical device assembly according to an embodiment of the present invention comprises at least one coolable electrical component attached to the body portion 92 of the cooler in a thermally conductive manner. The at least one coolable electrical component may be attached directly to the body portion 92 of the cooler in a thermally conductive manner or indirectly to the body portion 92 of the cooler in a thermally conductive manner such that one or more thermally conductive elements are present between the at least one coolable electrical component and the body portion of the cooler. According to an embodiment of the invention, the at least one coolable electrical component comprises at least one semiconductor module, which comprises at least one controllable semiconductor switch.

According to an embodiment of the invention shown in fig. 3, the at least one coolable electrical device component comprises a first semiconductor module 11, a second semiconductor module 12 and a third semiconductor module 13, each of the first semiconductor module 11, the second semiconductor module 12 and the third semiconductor module 13 being attached to the body part 92 of the cooler in a thermally conductive manner. In the example shown in fig. 3, the first semiconductor module 11, the second semiconductor module 12, and the third semiconductor module 13 also each include two semiconductor elements.

The cooling channel 4 of the cooled electrical device assembly according to the embodiment of the invention shown in fig. 3 and 4 comprises, as a whole, a condenser section 46, a fin section 49 and a resistance coil section 47, wherein the condenser section 46 is positioned upstream relative to the fin section 49 and the resistance coil section 47 is positioned downstream relative to the fin section 49 in the flow direction of the cooling air. The cooled electrical device assembly shown in fig. 3 comprises a condenser 6 and an impedance coil 7, the condenser 6 being positioned in a condenser section 46 of the cooling channel 4 and the impedance coil 7 being positioned in an impedance coil section 47 of the cooling channel 4.

The cooling fin section 49 of the cooling channel 4 of the cooled electrical device assembly according to an embodiment of the invention shown in fig. 3 and 4 comprises a first fin channel section 31, a second fin channel section 32 and a third fin channel section 33, which are parallel fin channel sections of the fin section 49, such that the first fin channel section 31 is arranged to cool the first semiconductor module 31, the second fin channel section 32 is arranged to cool the second semiconductor module 32 and the third fin channel section 33 is arranged to cool the third semiconductor module 33. Furthermore, the cooling air flow is arranged to flow in the

cooling channel sections

401, 402, 403 from the inlet end 41 of the cooling channel 4 until the inlet end 301 of each fin channel, such that the first cooling channel section 401 is in fluid connection with the first fin channel section 31, the second cooling channel section 402 is in fluid connection with the second fin channel section 32, and the third cooling channel section 403 is in fluid connection with the third fin channel section 33.

It is obvious to a person skilled in the art that the basic idea of the invention can be implemented in many different ways. The invention and its embodiments are thus not limited to the examples described above, but may vary within the scope of the claims.

Claims

1. A cooler, comprising:

a body portion (92) of the cooler;

a number of cooling fins (94), the number of cooling fins (94) extending from the body portion (92) of the cooler and the number of cooling fins (94) each having an inlet edge (95) and an outlet edge (98), the inlet edge (95) having a first end (96) and a second end (97) at a distance from the first end (96), the outlet edge (98) having a first end (99) and a second end (100) at a distance from the first end (99), wherein the direction between the first end (96) of the inlet edge (95) and the first end (99) of the outlet edge (98) is a fin direction, and wherein at least a portion of the edge between the first end (96) of the inlet edge (95) and the first end (99) of the outlet edge (98) of each of the cooling fins (94) is a fin direction with the body portion (92) ) The contact is carried out in a way that,

characterized in that in each of the cooling fins (94), the second end (97) of the inlet edge (95) is closer to the first end (99) of the outlet edge (98) than the first end (96) of the inlet edge (95) in the fin direction and the second end (100) of the outlet edge (98) is further from the first end (96) of the inlet edge (95) than the first end (99) of the outlet edge (98) in the fin direction.

2. The cooler of claim 1, wherein each of said cooling fins (94) is substantially flat.

3. A cooler according to claim 1, characterised in that a number of cooling fins (94) extend substantially parallel from the body portion (92) of the cooler.

4. The cooler as set forth in claim 1, characterized in that each of said cooling fins (94) has a polygonal shape.

5. A cooler according to claim 4, characterised in that each cooling fin (94) has a rectangular shape.

6. The cooler according to claim 4, characterized in that the inlet edge (95) and the outlet edge (98) of each cooling fin (94) are parallel to each other.

7. A cooler according to claim 6, characterised in that each cooling fin (94) has a parallelogram shape.

8. A cooled electrical device assembly comprising:

-a housing (2), the housing (2) comprising a cooling channel (4), the cooling channel (4) being arranged for a flow of cooling air such that the cooling channel (4) has an inlet end (41) adapted to supply cooling air into the cooling channel (4) and an outlet end (42) adapted to remove cooling air from the cooling channel (4), wherein the flow direction of cooling air is from the inlet end (41) towards the outlet end (42) of the cooling channel (4);

at least one of the electrical components can be cooled,

wherein the cooled electrical device assembly comprises the cooler of claim 1,

wherein the number of cooling fins (94) form a number of fin channels between the number of cooling fins (94), the number of fin channels defining fin sections (49) of the cooling channel (4) of the electrical device assembly, each fin channel of the fin sections (49) having an inlet end (301) and an outlet end (302), and

wherein the at least one coolable electrical component is attached to the body portion (92) of the cooler in a thermally conductive manner.

9. Cooled electrical device assembly according to claim 8, characterised in that the at least one coolable electrical component comprises at least one semiconductor module, which comprises at least one controllable semiconductor switch.