A frequency conversion outdoor unit is applied to a constant temperature and humidity control method and system

Abstract

The invention discloses a control method and system for applying a frequency conversion outdoor unit to constant temperature and humidity, and relates to the field of air conditioning. The system includes an indoor unit and at least one group of frequency conversion outdoor units, and each frequency conversion outdoor unit includes at least one frequency conversion compressor. The constant temperature and humidity control cabinet of the indoor unit communicates with a group of frequency conversion outdoor units, and the frequency conversion outdoor unit communicates with other frequency conversion outdoor units; the control method includes the following steps: the constant temperature and humidity control cabinet calculates the capacity requirements, and calculates the capacity requirements It is transmitted to the frequency conversion outdoor unit that communicates with it; the frequency conversion outdoor unit generates adjustable signals according to the received capacity requirements, and the adjustable signal is transmitted to the corresponding frequency conversion outdoor unit; each frequency conversion outdoor unit controls the corresponding frequency conversion compressor according to the received adjustable signal Start running. The invention realizes the automatic adjustment of the opening degree of the frequency conversion direct expansion system according to the demand of constant temperature and humidity, realizes centralized control, and realizes energy balance control.

Description

technical field [0001] The invention relates to the technical field of air conditioning, in particular to a control method and system for a frequency conversion outdoor unit applied to constant temperature and humidity. Background technique [0002] In order to ensure that the clean room reaches the working conditions of constant temperature and humidity, it is usually realized by freezing, dehumidification and reheating, and the dehumidification process is usually realized by adjusting the cooling capacity of the constant temperature and humidity system. The amount of refrigerant to achieve. [0003] In the traditional design, in the case of a single system, one condenser is generally used to correspond to one evaporator; the frequency conversion direct expansion system operates independently, and it has its own controller. The controller is based on the deviation between the current indoor temperature and the set temperature and The rate of change of room temperature and ...

AI Technical Summary

Problems solved by technology

[0006] First of all, the frequency conversion direct expansion system operates independently, it is completely separated from the constant temperature and humidity control system, and cannot receive the cooling capacity demand signal of the constant temperature and humidity control system;

[0007] Secondly, when there are multiple frequency conversion outdoor units, each can be adjusted independently, which is prone to overshoot;

[0008] Again, the traditional design only has the concept of temperature control, without humidity control, and cannot automatically adjust the compressor demand according to the humidity signal

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