US Patent 10451322 Refrigerator appliance with a caloric heat pump

A refrigerator appliance includes a cold side working fluid circuit that couples a cold side heat exchanger and a regenerator housing. A first hot side working fluid circuit couples a first hot side heat exchanger and the regenerator housing. A second hot side working fluid circuit couples a second hot side heat exchanger and the regenerator housing such that working fluid is flowable between the second hot side heat exchanger and the regenerator housing. An inlet of the second hot side working fluid circuit is positioned on the regenerator housing such that a temperature of the working fluid at the inlet of the second hot side working fluid circuit is greater than a temperature of the chilled chamber.