ELECTRIC LIQUID TUBE THERMOSTAT Russian patent published in 1998 - IPC

FIELD: automatic control equipment, in particular, for investigation of fluids and other objects which are located in cylindrical chambers of different length under normal or excess pressure. SUBSTANCE: device is designed with plug connection and has heat-insulated tube housing and working chamber which connection is sealed on both sides by means of flexible gaskets 10 so that inner chamber is provided and filled with temperature-keeping liquid 12. Ends of working chamber go outside for their technical servicing. In addition wire spiral heater is located in uniform way along total length of external jacket of tube housing. Sleeve 11 is located in chamber with temperature-keeping liquid 12. Sleeve has spiral grooves and is mounted free sliding when thermostat is rocked with simultaneous agitation of temperature-keeping liquid in order to achieve stable heating temperature. When device is switched on from power supply 7 through control unit 8, heater 3 is supplied, external housing jacket 1 and temperature-keeping liquid 12 are heated. When required temperature is reached, contacts of temperature regulator are closed and signal is sent to control unit and power supply circuit of heater 3 is switched off. Precision of temperature regulation is monitored by reference thermometer 5 using additional adjustment by means of by means of electric-contact thermometer 6. In addition device is rocked by means of rotation unit 14. When device is declined, sleeve 11 slides below and passes temperature-keeping liquid through its spiral grooves. This results in possibility better agitation of liquid and temperature stabilization along total length of working chamber. EFFECT: increased field of application, increased reliability of keeping temperature of objects which are located in long cylindrical containers. 2 cl, 2 dwg