Frequency variable air conditioner

The invention discloses a frequency variable air conditioner. The frequency variable air conditioner is characterized in that a refrigerating current transformation element is arranged on a conveying pipeline for connecting an air conditioner condenser with an evaporator; the refrigerating current transformation element is used for carrying out current transformation on a refrigerating agent, and at least one path of a conveying pipe between the refrigerating current transformation element and the evaporator is provided with a first nozzle; and the first nozzle is arranged at the position close to the refrigeration direction inlet end of the evaporator. The first nozzle is arranged at the inlet end of the evaporator and has the advantage of instantly reducing pressure, so that heat exchange between the refrigerating agent and the exterior in the input process can be reduced, and compared with the traditional throttling mode, the air conditioner has the better refrigerating effect under the same condition. Due to the fact that the refrigerating agent in the input pipeline is changed into be in the liquid state from the gas state to be input, and under the same mass, the gas state occupies the larger space than the liquid state, and the liquid-state input increases the condensation space, output pressure of the compressor is reduced, and power consumption of a compressor is reduced. The seasonal energy efficiency ratio of the air conditioner is greatly improved, and the unexpected effect is achieved.