DE19827333A1 - Machine housing manufacturing method e.g. for electrical machine - Google Patents

Abstract

The machine housing manufacturing method has a housing wall (1) incorporating a helical cooling channel (4) formed by winding a deformable hollow profile (6), defining the cooling channel, into a cylinder. The housing wall (1) may be formed from an extruded aluminum profile (6) with a rectangular cross-section, with the joints between the abutting sides of the profile windings sealed together.

Description

The invention relates to a manufacturing method for a machine housing or Like., The housing wall of which run essentially helically contains the coolant duct. The technical environment becomes an example refer to GB 2 284 943 A.

The known machine housing with cooling channels, for example for electrical Machines or the like are usually complicated and thus expensive casting processes manufactured or from several individually for processed individual parts assembled, which afterwards in complex Way must be sealed.

The task is to show a simplified manufacturing process of the present invention.

The solution to this problem is characterized in that the housing wall by helically winding a deformable hollow profile, wel ches forms the coolant channel, is formed. Is preferred as a hollow profile a particularly rectangular aluminum extrusion profile used, wherein  the joints between the adjacent hollow profile sections be closed by a material connection technology.

The invention is explained in more detail with reference to a preferred embodiment example, the attached figure being a manufactured according to the invention Machine housing in a principle partial section shows.

Reference number 1 denotes the housing wall of a (here cylindrical) machine housing, which acts as the housing jacket, the two end faces of which are closed with end walls 2 . The interior 3 of the machine housing holds any machine, such as an electric motor or otherwise, which (s) must be cooled. This cooling takes place via a in the housing wall 1 helically extending Kühlmit telkanal 4 , through which a suitable coolant can be passed. For this purpose, 2-inlet and outlet openings 5, which communicate with the coolant channel 4 in connection, is provided in the end walls.

The housing jacket of the machine housing shown or the housing wall 1 of the same containing the coolant channel 4 is produced by helically winding a deformable hollow profile 6 . This hollow profile 6 is wound helically around the longitudinal axis 7 of the machine housing and thus runs ver with respect to this longitudinal axis 7 comparable to a spiral staircase or a spiral spring (in particular constant diameter). This deformable hollow profile 6 is preferably an aluminum extruded profile, which is easy to manufacture.

In the manner described, the hollow profile 6 itself or the material of the same forms the housing wall 1 , the joints 8 preferably both on the outside of the housing wall 1 and on the interior 3 facing the interior thereof between the adjacent hollow profile sections by means of a cohesive connection technology be closed. Preferably, in the also helical bezüg Lich the longitudinal axis 7 joints 8, the adjacent hollow profile sections (for example, at one point designated 6 a, 6 b) are welded together. As a result, these joints 8 are not only sealed abge, but in particular this will create a dimensionally stable composite ge, which forms the hollow body-shaped machine housing. Subsequently, the two end walls 2 are connected to this composite, for example again by welding, ie by a material connection.

As can be seen in the described manner, a rigid machine housing with tightly packed coolant channels 4 can be produced in a simple manner, with no special requirements being placed on the sealing of these coolant channels 4 . It is only necessary to ensure that a transition between the inlet and outlet openings 5 and the coolant channel 4 is possible, which - as shown here - by appropriate mechanical processing of the end walls 2 adjacent sections of the hollow profile 6 - namely by suitable cutting or sawing them out - can be realized.

It should also be pointed out that the (here cylindrical) machine housing in the manner according to the invention can be designed in a wide variety of forms, for example with a round, oval or approximately rectangular cross section (perpendicular to the longitudinal axis 7 ). Furthermore, the outside and / or the inside of the housing wall 1 facing the interior 3 can also be subsequently machined, in particular if required or required. Furthermore, a hollow profile 6 with egg nem other than the rectangular cross-section shown here can be used, this and a variety of further details, in particular con structive type can be quite deviating from the exemplary embodiment shown, without departing from the content of the claims.

Reference list

1

Housing wall

2nd

Front wall

3rd

inner space

4th

Coolant channel

5

Inlet / outlet opening

6

Hollow profile

6

a,

6

b adjacent sections of

6

7

Longitudinal axis

8th

Joint (s) between

6

a,

6

b

Claims (3)

1. Manufacturing method for a machine housing or the like., The Ge housing wall ( 1 ) contains a substantially helically extending coolant channel ( 4 ), characterized in that the housing wall ( 1 ) by helically winding a deformable hollow profile ( 6 ) which forms the coolant channel ( 4 ) is formed. 2. Manufacturing method according to claim 1, characterized in that a particularly rectangular aluminum extruded profile is used as the hollow profile ( 6 ). 3. Manufacturing method according to claim 1 or 2, characterized in that the joints ( 8 ) between the adjacent hollow profile sections ( 6 a, 6 b) are closed by a material connection technology.