Temperature set back

Claim 2

Temperature set-back control apparatus for setting back, during set-back intervals, the temperature of a region whose temperature is under the control of a thermostat at a position in said region sensing the temperature in said region at said position, the flow of ambient air in said region being directed towards said thermostat, the said apparatus including an enclosure enclosing said thermostat, providing a protective heated environment for said thermostat not susceptible to prevailing ambient air currents, said enclosure having an air inlet on one side of said thermostat and an air outlet on another side of said thermostat, said air outlet being transverse to the path of direct flow of said ambient air to said thermostat, switch means, operative during each of said set-back intervals to define each of said set-back intervals, and means, operable, only on said operation of said switch means during each set-back interval, connected to said enclosure, for preheating the air flowing into said inlet during said set-back intervals, thereby increasing the temperature in said enclosure and causing said thermostat to sense temperature higher than the ambient temperature in said region and to produce a set-back in said ambient temperature.

Claim 3

The apparatus of claim 1 wherein the region is defined by a vertical wall and the thermostat is mounted on said wall and the enclosure is mounted on said wall enclosing said thermostat, said inlet being in said enclosure below said thermostat and said outlet being in said enclosure above said thermostat but out of the path of downward flow of air towards said thermostat, and said preheating means being below said inlet preheating the air flowing into said inlet.

Claim 4

The apparatus of claim 1 including baffle means in the enclosure adjacent to the outlet producing turbulence of the air adjacent to said outlet.

Claim 5

The apparatus of claim 1 wherein the preheating means is a lamp, said apparatus including means, interposed between said lamp and said inlet, for absorbing the radiation from said lamp and transferring the heat derived from this absorption through said inlet to said chamber by convection.

Claim 6

The apparatus of claim 1 wherein the preheating means includes a lamp and means, connected to said lamp, for setting the position thereof to vary the heat flow into the inlet in accordance with the set-back temperature desired.

Claim 7

The apparatus of claim 1 wherein the switch means includes timing means for timing, during each set-back interval, the set-back of said temperature for a predetermined time interval and means connected to said timing means and to said preheating means for maintaining said preheating means in preheating condition during all of said predetermined interval.

Claim 8

Temperature set-back control apparatus for setting back the temperature of a region whose temperature is under the control of a thermostat at a position in said region, said thermostat sensing the temperature in said region at said position, the said apparatus including an enclosure enclosing said thermostat, providing a protective heated environment for said thermostat not susceptible to prevailing ambient turbulent air currents, said enclosure having an air inlet on one side of said thermostat and an air outlet on the other side of said thermostat, said air outlet being out of the path of direct flow of ambient air to said thermostat, and means, connected to said enclosure, for preheating the air flowing into said inlet, thereby increasing the temperature in said enclosure and causing said thermostat to sense a temperature higher than the ambient temperature in said region and to produce a set-back in said ambient temperature, said preheating means including an additional enclosure in communication with said inlet, a lamp within said additional enclosure, and pivoting means for said lamp for pivoting said lamp between a position in which the radiation from said lamp is projected within said additional enclosure and a position in which said radiation is, to a substantial extent, projected outwardly of said additional enclosure.

Claim 9

Temperature set-back control apparatus for setting back the temperature of a region whose temperature is under the control of a thermostat at a position in said region, said thermostat sensing the temperature in said region at said position, the said apparatus including an enclosure enclosing said thermostat, providing a protective heated environment for said thermostat not susceptible to prevailing ambient turbulent air currents, said enclosure having an air inlet on one side of said thermostat and an air outlet on the other side of said thermostat, said air outlet being out of the path of direct flow of ambient air to said thermostat, and means, connected to said enclosure, for preheating the air flowing into said inlet, thereby increasing the temperature in said enclosure and causing said thermostat to sense a temperature higher than the ambient temperature in said region and to produce a set-back in said ambient temperature, said preheating means including an additional enclosure in communication with said inlet, a lamp within said additional enclosure, and pivoting means for said lamp for pivoting said lamp between a position in which the radiation from said lamp is projected within said additional enclosure and a position in which said radiation is, to a substantial extent, projected outwardly of said additional enclosure.

Claim 10

Temperature set-back control apparatus for setting back the temperature of a region bounded by a vertical wall, said temperature being under the control of a thermostat mounted on said wall within said region, said thermostat sensing the temperature in said region near said wall, the prevailing ambient air currents in said region being directed towards said thermostat, the said apparatus including an enclosure mounted on said wall enclosing said thermostat, said enclosure providing a protective heated environment for said thermostat, not susceptible to said prevailing ambient air currents, said enclosure being defined by a closed top above said thermostat a bottom, and a vertical side wall, and having an air inlet below said thermostat and an air outlet in the vertical side wall near said closed top and means, connected to said enclosure, for preheating the air flowing into said enclosure through said inlet, thereby increasing the temperature in said enclosure and causing said thermostat to sense temperature higher than the ambient temperature in said region and to produce a set-back in said ambient temperature, said means energizing said heating means independantly of said thermostat.

Claim 11

Temperature set-back control apparatus for setting back the temperature of a region bounded by a vertical wall, said temperature being under the control of a thermostat mounted on said wall within said region, said thermostat sensing the temperature in said region near said wall, the prevailing ambient air currents in said region being directed towards said thermostat, the said apparatus including an enclosure mounted on said wall enclosing said thermostat, said enclosure providing a protective heated environment for said thermostat, not susceptible to said prevailing ambient air currents, said enclosure being defined by a closed top above said thermostat a bottom, and a vertical side wall, and having an air inlet below said thermostat and an air outlet in the vertical side wall near said closed top and means, connected to said enclosure, for preheating the air flowing into said enclosure through said inlet, thereby increasing the temperature in said enclosure and causing said thermostat to sense temperature higher than the ambient temperature in said region and to produce a set-back in said ambient temperature, said means energizing said heating means independantly of said thermostat.