DE9001929U1 - Fan insert for dissipating heat loss from electrical components and assemblies - Google Patents

Description

' MC/PLI-Be Sht-Li

16 February 1990

ROBERT BOSCH GMBH, 7000 Stuttgart 10

Fan insert for dissipating the waste heat from electrical components and

The invention is based on a fan inlet according to the generic term --jss Break 1.

Stand iter teahrriir

This is a fan module (D£-78 18 416 UI) in which the fan module is housed together with other modules in a cabinet and can be exchanged. However, in some cases a fan belonging to the fan module is not sufficient to ensure the most efficient dissipation of the heat generated by the electrical components and assemblies.

Task

The invention is based on the object of developing a fan insert according to the preamble of claim 1 in such a way that the waste heat generated in the cabinet is dissipated as efficiently as possible.

Solution

This object is achieved in a fan insert according to the preamble of claim 1 by the features specified in the characterizing part of this claim. The advantages that can be achieved with the invention consist in particular in the fact that two or more fans are accommodated in the fan insert, which generate two separate air flows, namely a first air flow for the inserts arranged above the fan insert and a second air flow for the inserts accommodated below the fan insert.

Another advantage is that several fans can be accommodated in a space-saving manner.

A preferred application for the invention is a cabinet for 19" racks.

Description

Pin embodiment of the invention is shown in the drawing using two figures and is described in more detail below. They show

Fig. 1 is a partial perspective view of a cabinet with a fan tray and another tray and

Fig. 2 is a side view of the fan tray in section.

In Fig. 1, 10 designates a cabinet which accommodates several drawers 11 and a fan drawer 12. The fan drawer 12 is preferably arranged at about half the height of the cabinet 10 between the drawers. The drawers 11 have a front wall 13 and a chassis plate 14 arranged at right angles thereto, on which electrical components 15 and modules 16 and/or with electrical components

&aacgr; _ assembled circuit boards are arranged, which during operation generate heat loss

-* hand over.

To dissipate the waste heat, the frame-shaped fan insert 12 has three fans 20, 21 arranged next to one another on the inside of its front wall 18 and its end wall 19 opposite the front wall. The front wall 18 and the end wall 19 contain passage openings 22, 23, preferably in the form of ventilation slots. The interior of the fan insert 12 is divided by a partition wall 24 into an upper space 25 and a lower space £6. The partition wall 24

₍ wall 24 runs from the upper edge area 27 of the front wall 1Ö i.um lower edge area 28 of the front wall opposite the front wall

Fig. 2 shows the dissipation of waste heat through the fan insert.

^The waste heat generated in the lower drawer 11 and possibly in further drawers below the fan drawer 12 heats the cool air flow sucked in by the fans 20 from the outside of the cabinet. The heated air is conveyed in the direction of arrow A below the partition wall 24 through the openings 22 of the front wall 18 to the outside in the direction of arrow B.

In the upper insert 11, the waste heat is transported out of the cabinet 10 by the fans 21 sucking in cool outside air in the direction of arrow C, which is transported through the openings 23 of the rear end wall 19 past the top of the partition wall 24 in the direction of arrow D. The insert arranged above the fan insert 12 is preferably designed in the same way as the insert 11. The chassis plates 14 preferably contain several openings 30 for the passage of air. The cabinet, which is closed on all sides, also has openings for the passage of air at its upper and lower end areas.

Claims (3)

MC/PLI-Be Scht-Li 16 February 1990 ROBERT BOSCH GMBH, 7000 Stuttgart 10 Claims 1. Fan insert for dissipating the waste heat from electrical components and assemblies which are contained in inserts which are arranged together with the fan insert in a cabinet, characterized in that a cuboid-shaped fan insert (12) contains air passage openings (22, 23) in its front wall (18) and in its end wall (19) opposite the front wall, that the front wall and the opposite end wall each have at least one fan (20, 21) on the inside and that the interior space (25) of the fan insert is divided by a partition wall (24) into a space (25, 26) which is open at the top and a space open at the bottom. 2. Fan insert according to claim 1, characterized in that the dividing wall (24) runs from the upper edge region (27) of the front wall (18) to the lower edge region (28) of the end wall (19) opposite the front wall. 3. Fan insert according to claim 1 or 2, characterized in that chassis plates (14) of the inserts (11) are provided with openings (30) for the passage of air.