| 摘要 |
<p>529,170. Correspondence control of temperature. SATCHWELL, L. April 29, 1939, No. 12900. Addition to 525,821. Drawings to Specification. [Class 40 (i)] A temperature regulating arrangement, in which the auxiliary heating of a boiler thermostat is controlled in accordance with weather conditions as described in the parent Specification, is arranged to control the boiler temperature by operating directly from the thermostat a damper la to control the air supply to the furnace. The auxiliary heating coil may be applied instead to a vessel in hydraulic connection with the thermostat or to a separate dilatable vessel arranged in the connection between the thermostat and the damper.</p> |
