Apparatus for heating an operator's cabin

US4386735A · kind A · utility

Assignee

• Klockner-Humboldt-Deutz AG · DE

Inventors

• Paul Tholen · Wittlich, DE
• Achim Z. Nieden · Cologne, DE

Key dates

• Filing date: Jan 16, 1981
• Grant date: Jun 7, 1983
• Expiry date: Jan 16, 2001

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F24V40/10
• WIPO field: Thermal processes and apparatus
• WIPO sector: Mechanical engineering

Abstract

Apparatus for heating the cabin of a vehicle operated by an internal combustion engine. The apparatus includes a pump for circulating hot oil from the engine sump and a heat exchanger for heating cabin air with heat from the oil. A throttle valve is mounted downstream from the pump to heat the oil and provide a source of heat particularly during warm-up periods. Also the apparatus includes an adjustable flow apportioning valve for selectively and adjustably dividing the flow of oil downstream from the throttle valve into two separate streams. The heat from one of the separate streams is then recycled directly into the oil at the pump suction. This arrangement maximizes the efficient useage of the heat generated in the throttle for cabin heating purposes. Also disclosed is an improved throttle valve for use in connection with the heating apparatus.