The invention discloses an energy-saving air conditioner using outdoor cold source indirectly, which is suitable for occasions having great heating quantity and needing
refrigeration in winter, such as communication
machine rooms and computer rooms. The energy-saving air conditioner consists of indoor
machine subassemblies, and an air-cooled condenser, a liquid reservoir, a
fluorine pump and a capillary tube which are positioned outside the room, wherein the indoor
machine subassemblies comprise a compressor, an
evaporator and the like and are connected with an inlet of the air-cooled condenser through a connecting pipeline; the liquid reservoir is installed on a connecting pipeline between an outlet of the air-cooled condenser and the indoor machine; and the
fluorine pump is connected with another
branch at the outlet of the liquid reservoir, thus forming a separate refrigerating circulation
system with the air-cooled condenser, the
evaporator and the capillary tube. The air conditioner lowers the temperature by a refrigerating
system in summer. When the
outdoor temperature is lower than a certain pre-set temperature, the
fluorine pump energy-saving
system operates. A fluorine pump refrigerating circulation system is added, and outdoor cold source can be utilized at appropriate outdoor ambient temperature without opening the compressor, thus reducing the running
energy consumption of the air conditioner, shortening the working time of the compressor and prolonging the service life of the compressor.