Combined liquid-cooled on-board network generator and heater for mobile vehicles

US4500772A · kind A · utility

Assignee

• Robert Bosch GmbH · DE

Inventors

• Peter Ahner · Eppelheim, DE
• Helmut Harer · Waiblingen, DE
• Siegfried Schustek · Ditzingen, DE

Key dates

• Filing date: Sep 27, 1982
• Grant date: Feb 19, 1985
• Expiry date: Sep 27, 2002

Classification

• Technology area (CPC H): Electricity
• CPC primary: H02K19/365
• WIPO field: Electrical machinery, apparatus, energy
• WIPO sector: Electrical engineering

Abstract

A combined on-board electric network generator and heater for vehicles, having mounted in its housing an armature which supports at least one alternating current coil and, more particularly, three-phase current coils. The combined generator-heater has a drum-shaped rotor, driven by the engine of the vehicle. The housing of this unit is closed and encloses the rotor as well as the armature and is formed with fluid ducts. Within the housing, a cooling-air circulation is maintained which streams over the coils and rotors and cools them, transferring heat to heat exchange elements which form part of the housing. A cooling fluid circulates in the ducts in a loop through input and output ports. The loop closes upon itself outside of the housing. The cooling fluid circulation recovers heat losses in the generator and makes the heat available for heating the passenger compartment of a vehicle. Additional heat can be transferred to the fluid by an electrically heated heat exchanger with heater elements (37) which are selectively energized by switches under voltage or temperature control.