Air conditioner of convertor and control method

Abstract

This invention relates to air condition of a converter and its control method, which determines the maximum operational frequency sphere with actual condensation temperature and controls the drive of a compressor including: determining a first operational frequency of the compressor to test the condensed temperature of a condenser then determining the highest operational frequency based on the condensed temperature to bring it into the sphere of the highest operational frequency to control drive of the compressor with the re-determined frequency.

Description

Technical field [0001] The present invention relates to an inverter air conditioner, in particular to an inverter air conditioner that limits the operating frequency range of a compressor with a maximum operating frequency determined based on the condensation temperature, and realizes control of the drive of the compressor. The invention also relates to its control method. Background technique [0002] The air conditioner is a device used for indoor cooling / heating, with dehumidification and quietness functions. An air conditioner that uses a compressor driven by an inverter method is called an inverter air conditioner. [0003] The inverter air conditioner controls the number of rotations of the compressor according to the load conditions of the cold room or the warm room, and changes the circulation amount of the refrigerant. At this time, the number of rotations of the compressor can be controlled by changing the frequency of the driving power supply of the compressor motor, t...

AI Technical Summary

Problems solved by technology

In the cold room, because the condensing machine is located outside, it is reasonable to limit the operating frequency by the outdoor temperature, but in the warm room, because the condensing machine is located indoors, it is unreasonable to limit the operating frequency only by the outdoor temperature

[0008] In the prior art, when the outdoor load is large, in order to prevent wear and tear of the compressor and the compressor driving control unit that controls the compressor drive, the operating frequency of the compressor is limited according to the outdoor temperature; but when the outdoor load is small , when there are no problems such as wear and tear, the practice of limiting the operating frequency of the compressor by the outdoor temperature makes the operating frequency unnecessarily excessively limited, and as a result, the function of the inverter air conditioner cannot be normally performed

[0009] This shows that the above-mentioned existing converter air conditioner obviously still has inconvenience and defects in product structure, control method and use, and needs to be further improved urgently

In order to solve the problems existing in converter air conditioners, relevant manufacturers have tried their best to find a solution, but no suitable design has been developed for a long time, and general products do not have a suitable structure to solve the above problems. This is obviously a problem that relevant industry players are eager to solve

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