THERMOELECTRIC ZERO-THERMOSTAT Russian patent published in 2009 - IPC H01L35/28 F25B21/02 

FIELD: physics.

SUBSTANCE: proposed device consists of internal and external cylindrical chambers. The internal chamber is filled with distilled water interfaced into solid and liquid phases. The internal chamber lateral walls are made from a low heat conductivity material, the bases being made from a high heat conductivity material. The thermoelectric module is brought, via cold junction, in thermal contact with the bottom base of the internal chamber. The thermoelectric module hot junction is in contact with the external chamber bottom base. The external chamber represents a heat sink in contact, via its top base, with the top base of the internal chamber and with radiator arranged on the top base of the external chamber. A ring-like weight is in liquid phase. At the weight bottom base, a check junction of the differential thermocouple is arranged to be permanently located in the ice thawing region. To define current position of the phase interface, radiators and receivers are attached to the internal chamber top base, while a ring-like deflector is attached to the weight top base.

EFFECT: higher reliability and accuracy of thermostatting in long operation.

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