Multi-connected air conditioning system and running control method thereof

Abstract

The invention relates to the technical field of data center refrigeration air conditioners, in particular to a multi-connected air conditioning system and a running control method thereof. The multi-connected air conditioning system comprises a main controller, an outdoor unit and a plurality of parallelly-connected indoor units, each indoor unit is connected with the outdoor unit through a refrigerant pipeline, the outdoor unit comprises a compressor and a condenser which are mutually connected, the compressor is connected with the main controller in an electric signal manner, each indoor unit comprises at least two parallelly-connected indoor unit bodies, each indoor unit body comprises an electronic expansion valve and a first connector connected with the electronic expansion valve, and the first connectors are connected with the main controller in an electric signal manner. The multi-connected air conditioning system is simple in structure, simple and convenient to install, small in occupied space, good in economy and applicable to different types of compressors, investment cost and installation cost are reduced, and the number of the indoor unit bodies can be flexibly adjusted according to actual use conditions, so that versatile user requirements are met.

Description

technical field [0001] The invention relates to the technical field of data center refrigeration and air conditioning, in particular to a multi-connected air conditioning system and an operation control method thereof. Background technique [0002] The air-conditioning unit is used to adjust the indoor temperature, and the indoor unit is the user terminal. The existing direct expansion system cannot be multi-connected, one outdoor unit is connected to one indoor unit, the number of outdoor units is large, the system is complex and huge, and the required outdoor unit occupies a large area; if the outdoor units are placed together, it will cause The heat island effect seriously affects the cooling effect, and the installation takes time and cost. However, if the multi-connected air conditioner unit in the prior art is used, in order to solve the problem of oil return, additional refrigerant distributors need to be added, thereby increasing the floor area of ​​the machine room...

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Problems solved by technology

[0005] The object of the present invention is to provide a multi-connected air-conditioning system and its operation control method with simple structure, small floor space and effective reduction of production cost, so as to solve the problem of complex system and occupation of existing computer room air-conditioners used in data centers. The problem of large space and poor economy

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