Abstract: This turbo compressor comprises: an impeller; a shaft part that causes the impeller to rotate; an electric motor that rotatably drives the shaft part; a casing that accommodates the electric motor; a magnetic bearing that supports the shaft part; a heat transfer plate of which one surface is attached to the outer surface of the casing; a magnetic bearing drive substrate that is in surface contact with the other surface of the heat transfer plate on the side opposite from the one surface; and a cooling unit to which a refrigerant is supplied from the outside, whereby the cold/heat of the supplied refrigerant is transmitted to the heat transfer plate.

Abstract: This condenser comprises: an introduction part having a suction port for suctioning a gas coolant emitted from a compressor, and a gas baffle plate through which the suctioned gas coolant can pass; a shell capable of housing the gas coolant that has passed through the gas baffle plate; and a check valve capable of opening and closing the suction port. The check valve has a valve body that overlaps the gas baffle plate when in an open state and covers the suction hole when in a closed state.

Abstract: This turbo compressor comprises: an impeller; a shaft part that causes the impeller to rotate; an electric motor that rotatably drives the shaft part; a casing that accommodates the electric motor; a magnetic bearing that supports the shaft part; a heat transfer plate of which one surface is attached to the outer surface of the casing; a magnetic bearing drive substrate that is in surface contact with the other surface of the heat transfer plate on the side opposite from the one surface; and a cooling unit to which a refrigerant is supplied from the outside, whereby the cold/heat of the supplied refrigerant is transmitted to the heat transfer plate.