THERMOSTAT Russian patent published in 1997 - IPC

FIELD: equipment maintaining temperature mode both under decreased and increased temperatures of environment. SUBSTANCE: thermostat has heat- insulated body housing working chamber, air conduits, cooling unit placed in stream of air going out of working chamber, power supply unit to which outputs electric units are connected. They have form of fan which impellers are located in air conduits, first control unit to which outputs heater is connected. First temperature transducer is placed in stream of air going into working chamber after heater. Inputs of cooling unit and power supply unit are connected to buses of network. Thermostat is additionally equipped with cooling elements and storage cell. Cooling elements are put into air conduits between cooling unit and heater. Power supply unit is manufactured in the form of rectifier connected with outputs to analogous poles of storage cell and to inputs of electric units. Cooling elements operate at temperature below that of thermostating. EFFECT: expanded operational capabilities of thermostat by provision of mode of temporary maintenance of temperature in working chamber in case of absence of power supply from network. 5 cl, 2 dwg