Cushman, Darby & Cushman
Air-conditioning apparatus having heat source unit and plural indoor units connected to the heat source unit
 There is provided an air-conditioning apparatus. A cooling bypass extends from a pipe portion between a water heat exchanger and indoor heat exchangers of a refrigerating cycle to a low-pressure-side pipe portion of the refrigerating cycle. The cooling bypass is provided with a flow control valve. A discharged-refrigerant temperature Td and sucked-refrigerant temperature Ts of a compressor are sensed, and the opening degree of the flow control valve is zone-controlled in accordance with temperature Td or temperature Ts. When the sucked-refrigerant temperature Ts exceeds a predetermined value despite the zone-control, the opening degree of the flow control valve is controlled and increased. By this control, the amount of refrigerant flowing through the cooling bypass increases, and the refrigerant cooling effect on the low pressure side is enhanced. 
Kabushiki Kaisha Toshiba
F F F F F F
F25B F24F F25B F25B F25B F25B
inventional inventional inventional additional inventional inventional
Shigeki
Watanabe