DEVICE FOR CYCLICALLY CHANGING TEMPERATURE OF OBJECT Russian patent published in 2004 - IPC

FIELD: processes and apparatuses for keeping predetermined temperature values of object for preset time intervals and for cyclically changing temperature of object from one level to another according to program.

SUBSTANCE: device includes first and second modules realizing Peltier effect. Heat-acting junctions of first module are connected with object; second modules are arranged between heat -acting junctions of first module and radiator. Device also includes unit for controlling heat power separated by junctions of first module and for keeping predetermined temperature of object; first and second reversing units for changing connection of modules with electric current source; program controlled temperature setter and pickup for detecting object temperature. At time moments of creating in object unstable temperature modes by action of first module, second modules according to signal of program temperature setter are connected through second reversing unit to poles of power source whose polarity coincides with polarity of voltage supplied to first module. At starting each stable temperature mode provided by means of first module, signal of program temperature setter is fed to control inlet of second reversing unit that changes polarity of voltage fed to second modules and keeps such polarity until time moment of starting next stable temperature mode. Such procedures are cyclically repeated according to temperature changing program.

EFFECT: possibility for achieving high heating and cooling rates of object in unstable temperature modes of said object.

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