Electrical generator or motor structure – Dynamoelectric – Rotary
Patent
1998-09-11
1999-12-14
Ramirez, Nestor
Electrical generator or motor structure
Dynamoelectric
Rotary
310 89, 310112, 310101, 310105, 310208, 310234, H02K 122
Patent
active
060021934
DESCRIPTION:
BRIEF SUMMARY
TECHNICAL FIELD
The present invention relates to the field of electric machines with a discoidal structure.
BACKGROUND OF THE INVENTION
These machines may be synchronous, asynchronous or with direct current. They are operating as a generator or as a motor. In a general manner, they consist of at least one rotor disc and one stator disc.
Such a machine conventionally comprises at least one disc-shaped stator held on a casing and the central portion of which is hollowed out as well as a rotor also in the shape of a disc, mounted onto a shaft the axis of rotation of which coincides with the axis of the stator disc. However, the arrangement of the rotor disc with respect to the stator disc may differ from one discoidal machine to another one.
Thus the patent FR-2,583,231 describes a discoidal machine comprising a rotor disc mounted for rotation on the shaft of the machine and a stator disc connected to the casing and centred onto the axis of the shaft. It also describes a discoidal machine in which a rotor disc is placed between two stator discs. The windings of the rotor and stator discs are placed on confronting faces, the rotor disc being fitted with magnets or windings on these two faces.
One may also refer to the U.S. Pat. No. 4,514,653 which describes an electric machine of the discoidal type comprising several rotor discs and several associated stators.
The U.S. Pat. No. 5,229,677 as to it describes a motor of the discoidal type for marine propulsion.
These documents show that the known discoidal machines are constructed for a given power. Thus to each power corresponds a particular machine comprising a suitable number of rotor and stator discs. Therefore, the components of the machine and in particular the mechanical parts such as the casing for the protection of the motors should be conceived and manufactured for each machine with a given power.
This does not allow to mass-produce the components of the machine. In addition as from its being ordered, the manufacture of a discoidal machine is relatively long lasting.
SUMMARY OF THE INVENTION
The invention has as its object to cope with these inconveniences by proposing an elementary module for an electric machine of the discoidal type, a machine conceived from such modules and a method of manufacture of such a machine.
An elementary module according to the invention comprises at least one stator sub-assembly, at least one rotor sub-assembly and at least one casing element connected to the stator sub-assembly, the said sub-assemblies being disposed coaxially.
In a particular embodiment, the elementary module comprises a shaft portion, the said sub-assemblies being centred on the axis of the said shaft portion.
In a preferred manner, the casing element of the elementary module comprises a partition wall and/or at least one boss on its internal face for the holding in position of the stator windings.
Moreover, the discoidal machine according to the invention comprises at least one elementary stator/rotor module corresponding to a determined power and end modules comprising each one at least one end flange, the said elementary and end modules being mechanically assembled so that they all be centred on the axis of the machine, the casing elements of each elementary module being connected to each other and to the said end flanges to constitute the casing of the machine.
Each elementary module comprises active portions (magnetic circuit element, electric circuit or magnet element) and a casing element which are conceived for coupling themselves to an adjacent elementary module or an end module.
Thus each end module comprises at least one end flange and possibly an element such as a yoke permitting the return of the magnetic flux.
In effect, the air gap flux may be peculiar to an elementary module. In this case, the rotor or stator end discs of the elementary module exhibit a reluctance permitting the closing of the flux lines of one pole to the following one. This may in particular be obtained by suitable dimensions or by the addition of a yoke.
One may
REFERENCES:
patent: 4514653 (1985-04-01), Batni
patent: 4841189 (1989-06-01), Cooper et al.
patent: 4866321 (1989-09-01), Blanchard et al.
patent: 4874974 (1989-10-01), Wu
patent: 4996457 (1991-02-01), Hawsey et al.
patent: 5057726 (1991-10-01), Mole et al.
patent: 5068554 (1991-11-01), Mohn
patent: 5216339 (1993-06-01), Skybyk
patent: 5229677 (1993-07-01), Dade et al.
patent: 5365137 (1994-11-01), Richardson et al.
Canini Jean-Marc
Michaux Raymond
Milet Yves
Jeumont Industrie
Lam Thanh
Ramirez Nestor
LandOfFree
Basic module for a discoidal electric machine, and corresponding does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Basic module for a discoidal electric machine, and corresponding, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Basic module for a discoidal electric machine, and corresponding will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-866328