EP0030725A2
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Cooling an alternating current generator with a voltage regulator unit for use in vehicles
Assignee: Denso Corp
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Filing: 1980-12-12
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Granted: —
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Expires: 2000-12-12
Abstract
Abstract An alternate current generator having a housing consisting of directly coupled frame pieces and a stator core fixed directly to the inside surface of one of said frame pieces and a pair of fans fixed to the side surfaces of the pole cores of the rotor, mainly in order to increase the structural strength and the cooling efficiency of the generator.
Inventors
- 👤 Takayasu Nimura
- 👤 Tsutomu Shiga
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-28 02:41
CPC Classifications
H; H02; H02K; H02K19/00; H02K19/16; H02K19/36; H02K11/00; H02K11/04; H02K11/049; H02K11/05; H02K13/00; H02K13/003; H02K19/365; H02K5/00; H02K5/04; H02K9/00; H02K9/02; H02K9/04; H02K9/06
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
151 words
An alternate current generator comprising a shaft, pole cores of a rotor fixed to said shaft, a rotor winding wound around said pole cores, a stator core arranged around said rotor, a stator winding wound around said stator core and a housing encasing said rotor and said stator, characterized in that: said housing consists of a pair of frame pieces which are coupled directly to each other, said stator core is fixed directly to the inside surface of one of said frame pieces, a pair of bearing boxes are arranged in the central portions of said frame pieces inside of said housing formed by said pair of frame pieces, a pair of fans are fixed to the side surfaces of said pole cores of said rotor, and; the associated elements including slip rings, brushes, rectifiers and a voltage regulator unit are located outside of said housing formed by said frame pieces.
Claim 2
Dependent Claim
151 words
An alternate current generator comprising a shaft, pole cores of a rotor fixed to said shaft, a rotor winding wound around said pole cores, a stator core arranged around said rotor, a stator winding wound around said stator core and a housing encasing said rotor and said stator, characterized in that: said housing consists of a pair of frame pieces which are coupled directly to each other, said stator core is fixed directly to the inside surface of one of said frame pieces, a pair of bearing boxes are arranged in the central portions of said frame pieces inside of said housing formed by said pair of frame pieces, a pair of fans are fixed to the side surfaces of said pole cores of said rotor, and; the associated elements including slip rings, brushes, rectifiers and a voltage regulator unit are located outside of said housing formed by said frame pieces.
Claim 3
Dependent Claim
25 words
An alternate current generator as defined in Claim 1, wherein said pair of frame pieces are directly coupled to each other at their circular edges.
Claim 4
Dependent Claim
26 words
An alternate current generator as defined in Claim 1, wherein the diameter of each of said fans is smaller than the inner diameter of said stator.
Claim 5
Dependent Claim
38 words
An alternate current generator as defined in Claim 1, wherein one of said fans is of the mixed flow type having slant blades for supplying cooling air to said rotor both in the radial and the axial directions.
Claim 6
Dependent Claim
27 words
An alternate current generator as defined in Claim 1, wherein said slip rings are connected to said rotor winding through conductors arranged in slots in said shaft.
Claim 7
Dependent Claim
37 words
An alternate current generator as defined in 1 Claim 1, wherein said associated elements, such as slip rings, brushes, rectifiers and regulators, are accomodated in a rear cover which is fixed to one of said frame pieces.
Claim 8
Dependent Claim
34 words
An alternate current generator as defined in one of Claims 1 through 7, wherein a pulley having a plurality of grooves for a poly V belt is fixed to one end of said shaft.
Claim 9
Dependent Claim
33 words
An alternate current generator as defined in Claim 1, wherein a voltage regulator unit is located over the holder for said brushes and an electrical connector is located over said voltage regulator unit.
Claim 10
Dependent Claim
45 words
An alternate current generator as defined in Claim 1, wherein the axial length of said housing formed by said frame pieces decreases from the axis portion towards the circumferential portion, so that said housing has a swollen shape similar to the shape of an egg.
References Cited (Backward Citations)
No citation records indexed.
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