Solid-state refrigeration device

A solid-state refrigeration apparatus comprising:

• a housing having a solid-state refrigerant substance and an internal flow path through which a heat medium flows while exchanging heat with the solid-state refrigerant substance,
• a force field modulator configured to induce a caloric effect by making a force field variation on the solid-state refrigerant substance in the housing,
• a heat medium conveyor including a pump, the heat medium conveyor being configured to convey the heat medium to and from the solid-state refrigerant substance in the housing in accordance with the force field variation;
• and
• a controller connected to and configured to control the force field modulator and the heat medium conveyor, and the controller being configured to cause the solid-state refrigeration apparatus to perform
• a heat dissipation operation of applying a predetermined force field to the solid-state refrigerant substance and moving the heat medium in a first direction in the internal flow path to convey warm thermal energy generated in the solid-state refrigerant substance to an outside of the housing by the heat medium and
• a heat absorption operation of applying a force field smaller than the predetermined force field to the solid-state refrigerant substance or removing the predetermined force field and moving the heat medium in a second direction opposite to the first direction in the internal flow path to convey cold thermal energy generated in the solid-state refrigerant substance to the outside of the housing by the heat medium,
• the controller being configured to change a heat exchange amount between the heat medium and the solid-state refrigerant substance in at least one of the heat dissipation operation and the heat absorption operation.