Air conditioner humidity control system

US4852363A · kind A · utility

Assignee

• Sueddeutsche Kuehlerfabrik Julius Fr. Behr GmbH & Co. KG · DE

Inventors

• Hans Kampf · Bad Marienberg, DE
• Karl Lochmahr · Leinfelden, DE

Key dates

• Filing date: Nov 18, 1988
• Grant date: Aug 1, 1989
• Expiry date: Nov 18, 2008

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B60H1/3207
• WIPO field: Transport
• WIPO sector: Mechanical engineering

Abstract

In an air conditioner for a motor vehicle, which, for the purpose of contling the humidity, has in the ir duct suitable devices, controlled by a microcomputer. The microcomputer receives values for outside temperature, inside temperature and inside humidity, measured by sensors. From the values for outside temperature, inside temperature and inside humidity, the microcomputer determines the threshold humidity (l.sub.thresh) as the ratio of the saturated vapor pressure (P.sub.S) inside at the pane and the saturated vapor pressure (P.sub.i) of the inside air. If this difference (.DELTA.l) between threshold humidity (l.sub.thresh) and inside humidity (l.sub.i) falls below a stipulated value (x), dehumidification devices are actuated. If the stipulated value is exceeded, humidification devices are actuated.