Refrigeration apparatus
AssigneeDaikin Industries, Ltd.
InventorsMasaaki Takegami, Shuichi Taguchi
Life of this patent
Estimating the term…
Abstract
A refrigeration apparatus includes a heat source-side unit and a utilization-side unit that are connected to each other, and performs a refrigeration cycle in which a high pressure of a refrigerant reaches or exceeds a critical pressure. The refrigeration apparatus also includes a control unit configured to perform a first action of returning the refrigerant to the heat source-side unit when a stop condition of the utilization-side unit is satisfied, and a second action of prohibiting the first action when a pressure at the heat source-side unit is equal to or more than the critical pressure of the refrigerant. This configuration suppresses damage to a refrigerant storage reservoir and the like in returning the refrigerant to the heat source-side unit.
Claims8
A refrigeration apparatus comprising:
- a refrigerant circuit including
- a heat source-side unit installed outdoors, the heat source-side unit including a heat exchanger and a refrigerant storage reservoir, and
- a utilization-side unit connected to the heat source-side unit,
- the refrigerant circuit being configured to perform a refrigeration cycle in which a high pressure reaches or exceeds a critical pressure of the refrigerant;
- and
- a controller configured to control an action of the refrigerant circuit and to perform
- a first action of recovering at least a part of the refrigerant from the utilization-side unit and returning the refrigerant thus recovered to the heat source-side unit in a case where a stop condition of the utilization-side unit is satisfied, and
- a second action of prohibiting the first action in a case where a first condition indicating that a pressure at the refrigerant storage reservoir of the heat source-side unit is equal to or more than the critical pressure of the refrigerant is satisfied.
Dependencies are inferred from the claim text.