Thermostatic radiator valves and control thereof

摘要

A radiator valve 10 according to the present invention is fitted to a radiator 2 operable to heat a zone within which it is situated. The radiator valve 10 comprises a valve member 11, a valve driving means 12 and a temperature sensor 13. The valve driving means 12 is operable to move the valve member 11 between the fully open and fully closed positions in response to the zone temperature. The valve driving means 12 is operated when the zone temperature rises above a first threshold temperature to fully close the valve member 11, the first threshold temperature is lower than a preset target temperature for the zone to be heated. If the zone temperature subsequently drops below a second predetermined threshold temperature, normal operation of the valve 10 is resumed. In a further embodiment, a heating system 100 powered by a boiler 30 can be controlled in response to valve 10 position. in particular, the system 100 may shut down boiler 30 when a first specified number of valves 10 are closed and to restart boiler 30 operation once a second specified number of valves have reverted to normal operation.