Variable-frequency air conditioner

Abstract

The invention discloses a variable-frequency air conditioner. The variable-frequency air conditioner comprises a compressor, an indoor heat exchanger and an outdoor heat exchanger, wherein the compressor is provided with an exhaust opening and an intake opening, and the compressor comprises a compressing mechanism part and a motor part; the compressing mechanism part comprises two cylinders and acrankshaft, a sliding plate moving to and fro is arranged on each cylinder, and the crankshaft is provided with eccentric parts located in the two cylinders; the motor part is a three-phase permanentmagnet motor, and the line-to-line induced voltage constant of the three-phase permanent magnet motor is not more than 45Vrms / Krpm; the running mechanical frequency of the compressor under rated voltage and standard working conditions is not lower than 100Hz; and one of the indoor heat exchanger and the outdoor heat exchanger is connected with the exhaust opening, and the other of the indoor heatexchanger and the outdoor heat exchanger is connected with the intake opening. According to the variable-frequency air conditioner of the invention, when the temperature varying performance of the variable-frequency air conditioner is ensured, the weight of the variable-frequency air conditioner can be reduced, and high working reliability is ensured.

Description

technical field [0001] The invention relates to the field of household appliances, in particular to an inverter air conditioner. Background technique [0002] In the related art, the weight of the outdoor unit of the inverter air conditioner is relatively large, which is not conducive to the handling, installation and maintenance of the air conditioner installation workers, and increases the difficulty and danger of carrying the outdoor unit when working at heights. The compressor and condenser of the outdoor unit are the two heaviest parts. Among them, the model of the condenser determines the heat exchange effect of the inverter air conditioner and cannot be reduced at will. Therefore, it is necessary to reduce the weight of the compressor to reduce the weight of the outdoor unit. [0003] In order to reduce the weight of the compressor while ensuring the variable temperature performance of the inverter air conditioner, it is necessary to reduce the displacement of the co...

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Problems solved by technology

[0003] In order to reduce the weight of the compressor while ensuring the variable temperature performance of the inverter air conditioner, it is necessary to reduce the displacement of the compressor and increase the speed of the compressor. However, the high-speed operation of an ordinary compressor will cause fluctuations in the speed due to large fluctuations in the load torque. Large, which in turn affects the reliability of the compressor

At the same time, the high-speed operation of ordinary compressors will enter the weak magnetic operation state, thereby increasing the copper loss of the compressor and reducing the operating efficiency of the compressor, thereby reducing the energy efficiency of the inverter air conditioning system

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