Multi-split air conditioner coolant flow quantity intelligent dispensing system and its method

Abstract

The present invention discloses a refrigerant flow rate intelligent distribution system for one-driving-multiple air conditioners, comprising a compressor and at least three indoor units, wherein, each indoor unit comprises a control valve regulation module for intelligently regulating an electronic expansion valve of each indoor unit. The present invention also discloses a refrigerant flow rate intelligent distribution method for one-driving-multiple air conditioners, which first regulates the electronic expansion valve of each indoor unit to a datum opening degree when the compressor begins to operate, and then does not regulate the electronic expansion valve of each indoor unit in an operation period of the compressor, and finally regulates the electronic expansion valve of each indoor unit according to valve regulation cycles after the compressor overruns the operation period. Through the intelligent distribution to the refrigerant flow rate of one-driving-multiple air conditioners, the present invention realizes the refrigerant flow rate distribution of one-driving-multiple air conditioners according to needs.

Description

technical field [0001] The invention relates to the technical field of air conditioners, in particular to a system and method for intelligently distributing refrigerant flow in one-driver-multi-air conditioners. Background technique [0002] The distribution of refrigerant flow in the one-to-many air-conditioning system is a technical difficulty. Since the capability requirements of each indoor unit are not consistent, the refrigerant flow needs to be allocated on demand according to the capability requirements of each indoor unit. For the on-demand distribution of refrigerants, a series of implementation methods have appeared one after another, such as: [0003] 1) Each indoor unit distributes the refrigerant equally [0004] This control method is to evenly distribute the refrigerant to each working indoor unit, close the electronic expansion valve corresponding to the non-working indoor unit, do not distribute refrigerant, and open the corresponding electronic expansion...

AI Technical Summary

Problems solved by technology

However, in fact, this distribution method is still not an ideal distribution method, because it only realizes the distribution of refrigerant according to the design capacity of the internal unit, rather than the real distribution according to demand, because the refrigerant demand of each internal unit is not only the same as that of the internal unit. The design capacity of each internal unit is also related to their respective use conditions. This method of distributing refrigerant in proportion to the design capacity of the internal units is not an ideal distribution method.

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