AIR CONDITIONING SYSTEM CONTROL

摘要

A control system for an air conditioning system including a single or multiple air conditioning units (10, 91-94) for a plurality of zones (11-14). A temperature sensor (21-24) is located at each zone (11-14). A target temperature setting means (31) enables the user to set a respective target temperature for each zone. A central controller (25) includes a logic circuit (32) receiving a respective target temperature signal for each zone from the target temperature setting means (31) and is responsive to the temperature sensors (21-24) to determine the zones requiring heated air or cooled air. The central controller (25) includes command means (33, 95-98) responsive to the logic circuit (32) to control the supply of conditioned air to the zones. Where there is a central air conditioning unit (10), a ducting system (15) conveys the conditioned air from the central air conditioning unit (10) to the plurality of zones (11-14) and the command means (33) comprises a flow command means coupled to flow controllers (16-19) such as dampers in the ducting system controlling flow to each zone. When a particular zone temperature is substantially at its target temperature the logic circuit (32) causes the respective damper to close the ducting system (15) supplying conditioned air to that zone. The logic means (32) includes all zone satisfaction test means (45) to determine whether all zones are at their target temperatures and, if so, to open all of the dampers to the zones. When there are several air conditioning units (91-94), the command means comprises air conditioning unit switching means (95-98) operative to control the various air conditioning units (91-94).