Method and device for controlling refrigerant flow in one-to-multiple air-conditioning system

Abstract

The invention discloses a method for controlling the refrigerant flow rate of a one-to-multiple air-conditioning system. The method includes: an outdoor unit receives a refrigerant control signal sent by an indoor unit; when the refrigerant control signal is received for the first time, the outdoor unit, according to the refrigerant control signal, Obtain the sum of the amount of refrigerant required by each indoor unit during operation; adjust the frequency of the compressor accordingly according to the sum of the amount of refrigerant required by the indoor unit; adjust the electronic circuit on the refrigerant pipeline between the outdoor unit and each indoor unit The opening of the expansion valve is such that the amount of refrigerant change generated when the compressor frequency is adjusted flows into the refrigerant pipeline of the indoor unit that sends out the refrigerant control signal. The invention also discloses a control device for refrigerant flow in a one-driver-multiple air-conditioning system. The invention does not change the structure of the one-to-multiple air-conditioning system, and when the amount of refrigerant required by a specific indoor unit increases or decreases, it does not affect the effect of the amount of refrigerant in other indoor units, and can meet the requirements of the amount of refrigerant required by a specific indoor unit.

Description

technical field [0001] The invention relates to the field of air conditioners, in particular to a method and device for controlling refrigerant flow in a one-driver-multiple air-conditioning system. Background technique [0002] At present, as the economy develops faster and faster, consumers have higher and higher requirements for air conditioners. Small household central air conditioners are more and more favored by consumers, because only one outdoor unit can meet the different heating and cooling requirements of multiple rooms. There is no need to install multiple outdoor units outside the room. [0003] Generally speaking, users will choose the corresponding indoor unit according to the size of the room. However, in the actual use of household central air conditioners, if there are special circumstances, such as the outdoor temperature is too high and the frequency of the compressor is limited, there are many people in the hall, the sun is strong in a certain room, or ...

AI Technical Summary

Problems solved by technology

However, in the actual use of household central air conditioners, if there are special circumstances, such as the outdoor temperature is too high and the frequency of the compressor is limited, there are many people in the hall, the sun is strong in a certain room, or the room has special heating equipment. Therefore, the original indoor unit will have insufficient cooling capacity, and the temperature will hardly drop to the set temperature.

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