EP0125834A2
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Alternators
Assignee: ZF International UK Ltd
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Filing: 1984-05-02
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Granted: —
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Expires: 2004-05-02
Abstract
Abstract An alternator including a frame (11) supporting the stator windings (13) of the alternator, a rotor shaft (14) journalled for rotation about the axis of the stator windings (13), a rotor (15) carried by the rotor shaft, rectifier assembly (16) including semi-conductor devices (17) mounted on a heat sink member (16b), and a fan (22) carried by the rotor shaft (14) for rotation therewith, said heat sink member(16) ofthefull-wave rectifier defining part of a wall of a chamberwithin which the fan (22) is rotatable.
Inventors
- 👤 Maurice James Allport
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-27 19:40
CPC Classifications
H; H02; H02K; H02K9/00; H02K9/02; H02K9/04; H02K9/06; H02K11/00; H02K11/04; H02K11/049; H02K11/05
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
92 words
An alternator including a frame (11) supporting the stator windings (13) of the alternator, a rotor shaft (14) journalled for rotation about the axis of the stator windings (13), a rotor (15) carried by the rotor shaft, a rectifier assembly (16) including semi-conductor devices (17) mounted on a heat sink member and a fan (22) carried by the rotor shaft (14) for rotation therewith, characterised in that said heat sink member (16b) of the rectifier assembly (16) defines part of a wall of a chamber within which the fan (22) is rotatable.
Claim 2
Dependent Claim
92 words
An alternator including a frame (11) supporting the stator windings (13) of the alternator, a rotor shaft (14) journalled for rotation about the axis of the stator windings (13), a rotor (15) carried by the rotor shaft, a rectifier assembly (16) including semi-conductor devices (17) mounted on a heat sink member and a fan (22) carried by the rotor shaft (14) for rotation therewith, characterised in that said heat sink member (16b) of the rectifier assembly (16) defines part of a wall of a chamber within which the fan (22) is rotatable.
Claim 3
Dependent Claim
61 words
An alternator as claimed in claim 1 characterized in that said rectifier assembly (16) is a three phase, full wave rectifier and includes a further heat sink member (16a) carrying further semi-conductor devices (17), one of said heat sink members being electrically the positive member of the assembly while the other heat sink member is the negative member of the assembly.
Claim 4
Dependent Claim
20 words
An alternator as claimed in claim 2 characterized in that said heat sink members (16a, 16b) are in facial contact.
Claim 5
Dependent Claim
29 words
An alternator as claimed in claim 2, characterized in that said heat sink members (16a, 16b) are generally co-planar and each defines part of a wall of said chamber.
Claim 6
Dependent Claim
59 words
5 . An alternator as claimed in any one of claims 1 to 4, characterized in that said fan (22) and air inlets 23a through which air is drawn by said fan (22) are so positioned in relation to said rectifier assembly (16, 17) that the cooling air flows over both front and rear faces of the rectifier assembly.
Claim 7
Dependent Claim
46 words
An alternator as claimed in any one of claims 1 to 5 characterized in that said fan (22) is a centrifugal fan and said heat sink member (16) is generally planar, said fan rotating in a plane parallel to the plane of said heat sink member.
Claim 8
Dependent Claim
44 words
An alternator as claimed in any one of claims 1 to 6 characterized in that said alternator includes a further fan (25) carried by and rotatable with said rotor shaft (14), said further fan (25) also generating a cooling air flow into the alternator.
Claim 9
Dependent Claim
56 words
An alternator as claimed in any one of claims 1 to 7 characterized in that there is further provided a voltage regulator including semi-conductor devices and a heat sink member (19), and the heat sink member (19) of said voltage regulator also forms part of the wall of said chamber within which said fan (22) rotates.
Claim 10
Dependent Claim
46 words
An alternator as claimed in any one of claims 1 to 8 characterized in that the or each heat sink member (16, 19) extends parallel to the air flow of the first mentioned fan but includes a portion orportions (16a) which project into the air flow.
Claim 11
Dependent Claim
31 words
An alternator as claimed in any one of claims 1 to 9 characterized in that the or each heat sink member is thermally connected to the frame (lla) of the alternator.
References Cited (Backward Citations)
No citation records indexed.
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