| 摘要 |
<p>809,203. Automatic temperature-control systems. REGULATOR A.G. May 15, 1956 [May 16, 1955], No. 15165/56. Class 38 (4). [Also in Group XXXVIII] In an arrangement wherein the temperature in a building is maintained substantially constant by at least two temperature-sensitive resistors A, B disposed one in the rising pipe and the other at the external surface of the building body and forming part of a bridge which is arranged to adjust through an amplifier F and a motor-operated valve MV the temperature of the fluid in the rising pipe, two further temperature-sensitive devices M, D, one of which M has a delayed response time of the same order as the heat lag of the building are provided and connected so that rapid external temperature changes do not cause room changes in the building temperature during transient conditions. Resistors M and D which are part of a second bridge connected in series with the first produce an output across potentiometer TN during ambient temperature changes which aids the output of the main bridge. A construction and mounting arrangement of the two further thermistors providing for them to be swept uniformly by atmospheric air is described with reference to Fig. 3 (not shown), the temperature-sensitive resistor having the delayed response time being obtained by disposing the resistor in a delaying heat transferring medium.</p> |
