초록 ▼

The problem of adequate flexibility and reliability in apparatus for controlling temperatures in a plurality of zones is solved by a clock and digital logic circuits, together with a temperature sensing circuit portion effective in combination with platinum film-type temperature sensors, which produ

The problem of adequate flexibility and reliability in apparatus for controlling temperatures in a plurality of zones is solved by a clock and digital logic circuits, together with a temperature sensing circuit portion effective in combination with platinum film-type temperature sensors, which produce effective sensing over a wide range of temperatures. The control apparatus automatically effects two temperature sets per twenty-four hour period for each zone with an optional temperature set for weekends for all zones and has a display of current time and a display of temperature for each zone.

대표청구항 ▼

Timed temperature control apparatus for a zone comprising: clock means producing time output over a repetitive time cycle; time display means responsive to said time output to display current time; digital logic circuit means responsive to said timed output alternately producing a day mode status ou

Timed temperature control apparatus for a zone comprising: clock means producing time output over a repetitive time cycle; time display means responsive to said time output to display current time; digital logic circuit means responsive to said timed output alternately producing a day mode status output and a night mode status output; a temperature set means providing a different temperature set output for each said day modes and night modes, each temperature set being variable and preset to a selected temperature for that mode; temperature sensing and load control means including a sensing circuit portion having input terminals to which a temperature sensor for the zone is connected, each said sensing circuit portion having switching means responsive to said day and night mode status outputs from said temperature set outputs from said temperature set means to establish a set temperature for each mode, said temperature sensing and load control means including a load control portion with a comparator for comparing the relative magnitudes of the sensed temperature output and coupled to output terminals to which a load device for the zone is connected whereby to continuously measure the temperature in said zone during the day and during the night to actuate a load control device when the temperature drops below or goes above a selected temperature setting; and temperature display means responsive to the temperature sensed output of said sensing circuit portion to display the temperature of the zone, said temperature sensor being a resistance-type RTD platinum film.