Electrocaloric refrigerator

Abstract

The invention discloses an electrocaloric refrigerator. The electrocaloric refrigerator comprises a first electrocaloric material layer and an electrocaloric refrigeration unit composed of a first electrode layer and a second electrode layer attached to two sides of the first electrocaloric material layer, and further comprises a refrigeration piece located at one end of the electrocaloric refrigerator, a third electrode layer in tight contact with the refrigeration piece, a heat radiation piece located at the other end of the electrocaloric refrigerator, and a fourth electrode layer in tight contact with the heat radiation piece. The third electrode layer is opposite to the fourth electrode layer in position, and the third electrode layer is pointed at the electrocaloric refrigeration unit but makes no contact with the electrocaloric refrigeration unit. The electrocaloric refrigerator further comprises a track, pulse voltage is provided for the electrocaloric refrigerator by a power source, and a motor mechanically drives the electrocaloric refrigeration unit to reciprocate on the track so that the first electrode layer and the second electrode layer of the electrocaloric refrigeration unit can make contact with the fourth electrode layer on the heat radiation piece and the third electrode layer on the refrigeration piece correspondingly and alternatively.

Description

technical field [0001] The invention belongs to the technical field of refrigeration equipment, in particular to an electric card refrigerator. Background technique [0002] The electric card effect refers to the reversible isothermal entropy change or adiabatic temperature change exhibited by materials under an applied electric field. Materials that can produce an electric card effect are called electric card materials. When an external electric field is applied to the electric card material, the polarization order of the material itself changes, resulting in an entropy change of the material. Under isothermal conditions, the material system will exchange heat with the surrounding medium; under adiabatic conditions, the temperature of the material itself will change. [0003] The refrigeration of civil air conditioners and refrigerators is mainly through the mechanical evaporation-condensation cycle, which has low efficiency, increases the peak load of electricity, and us...

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Problems solved by technology

[0007] Although the aforementioned "Large Electric Card Effect in Ferroelectric Materials" described the relevant principles, the article did not give a specific method for realizing refrigeration

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