Frequency conversion air conditioner refrigeration control method, control device and frequency conversion air conditioner

Abstract

The invention discloses a control method and device for variable frequency air conditioner refrigeration and a variable frequency air conditioner. The control method comprises the steps that in the refrigeration operation process, indoor temperature is detected, an indoor temperature difference is calculated, and room temperature PID operation is performed according to the indoor temperature difference, so that first target frequency is obtained; the indoor temperature and set comfortable temperature are compared; if the indoor temperature is not smaller than the comfortable temperature, a compressor is controlled according to the first target frequency; if the indoor temperature is smaller than the comfortable temperature, the coil temperature of a variable frequency air conditioner evaporator is detected and compared with set coil target temperature; if the coil temperature is larger than the coil target temperature, the compressor is controlled according to the first target frequency; if the coil temperature is not larger than the coil target temperature, the current operation frequency of the compressor is lowered, so that second target frequency is obtained, and the compressor is controlled according to the smaller value of the second target frequency and the first target frequency. By applying the control method and device for variable frequency air conditioner refrigeration and the variable frequency air conditioner, the problem that an existing variable frequency air conditioner blows cold air, so refrigeration is uncomfortable can be solved.

Description

technical field [0001] The invention belongs to the technical field of air conditioning, and in particular relates to a refrigeration control method for an inverter air conditioner, a control device and an inverter air conditioner. Background technique [0002] In the hot summer, many people cannot do without the air conditioner all day and all night. However, blowing air conditioners for a long time has many harms to the human body, and it is easy to get air conditioner diseases. [0003] Although the existing inverter air conditioner can control the operating frequency of the compressor, its control basis is only the indoor temperature and the set indoor target temperature, and will not change the air outlet temperature of the air conditioner. And in order to reach fast refrigeration, the outlet air temperature of existing air conditioner will be far lower than setting temperature, and the air outlet air temperature of air conditioner is low, and the wind that blows out i...

AI Technical Summary

Problems solved by technology

[0004] The object of the present invention is to provide a refrigeration control method and control device for an inverter air conditioner, so as to solve the problem of uncomfortable refrigeration caused by the cold air blown out by the existing inverter air conditioner

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