Thermostat for the setting of a constant temperature for a fluid

US4651813A · kind A · utility

Assignee

• Kernforschungsanlage Lulich Gesellschaft mit beschrankter Haftung · DE

Inventors

• Jorg-D. Witt · Bergheim, DE
• Peter Schmidt · Schwieberdingen, DE

Key dates

• Filing date: Mar 25, 1985
• Grant date: Mar 24, 1987
• Expiry date: Mar 25, 2005

Classification

• Technology area (CPC G): Physics
• CPC primary: G05D23/1919
• WIPO field: Control
• WIPO sector: Instruments

Abstract

A process for the setting of a constant temperature for a fluid, and furtmore, to a thermostat for implementing the process. The constant temperature is set by the heating up of the fluid during its flow through a heat source. The fluid, prior to the setting of the constant temperature, is initially cooled down to a lower temperature, such that the temperature difference which is reached between the constant temperature and a lower temperature, is higher than the temperature-overshooting range of the cooling regulating circuit. These measures simplify the setting of the constant temperature inasmuch as only the heat source need be equipped with a high-performance regulator. Through the cooling section which is connected ahead of the heating element, there is maintained a minimum temperature differential. The temperature differential must be measured so high that the temperature-overshooting range of the cooling regulating circuit still remains below the constant temperature which is to be set by the heat source. It is to be understood, that the term temperature-overshooting range refers to the maximum deviation encountered relative to the value, which is transiently produced during…