VRV device for machine room

Abstract

The invention relates to a VRV (Variable Refrigerant Volume) device for a machine room, a control method and a system. The VRV device comprises an inverter compressor, an air-cooled condenser, a water-cooled heat exchanger, a water-cooled electromagnetic valve, an air-cooled electromagnetic valve, a temperature sensor and a plurality of tail ends, and the water-cooled electromagnetic valve is arranged on a pipeline for communicating the inverter compressor with the water-cooled heat exchanger; the air-cooled electromagnetic valve is arranged on a pipeline for communicating the inverter compressor with the air-cooled condenser; the tail ends respectively communicate with the outlets of refrigerants in the water-cooled heat exchanger and the air-cooled condenser through pipelines, and the temperature sensor is arranged outdoors and is used for measuring the temperature of outdoor air. The refrigeration efficiency of the tail ends is improved, and the shutdown risk of the VRV is reduced;operation deviation of the refrigeration system from the operation curve of the system is reduced, service life reduction of refrigeration components is reduced, and the advantages of improving the efficiency of the refrigeration system and reliability of the refrigeration system are achieved.

Description

technical field [0001] The invention relates to the field of multi-connection cooling for computer rooms, in particular to a multi-connection VRV device, control method and system for computer rooms. Background technique [0002] At present, the growing demand for energy saving, emission reduction and green environmental protection worldwide has put forward higher demands on the energy consumption and cooling capacity of subway operations and IT industry data centers; the reliability and stability of energy saving and refrigeration system operation have become Top of mind for homeowners and design builders. [0003] The traditional multi-connected VRV operation system is single, which cannot meet the operation modes of various situations in the equipment room. Generally, the equipment room and subway equipment room are terminally cooled, which is different from the traditional household and commercial multi-connected VRV systems. , without end heating. The main disadvantag...

AI Technical Summary

Problems solved by technology

[0003] The traditional multi-connected VRV operation system is single, which cannot meet the operation modes of various situations in the equipment room. Generally, the equipment room and subway equipment room are terminally cooled, which is different from the traditional household and commercial multi-connected VRV systems. , without end heating

The main disadvantage of using air-cooled multi-connected VRV devices is that when the temperature is high in summer, the condensation pressure may be too high due to the high outdoor temperature, resulting in a decrease in cooling efficiency, and the cooling capacity does not meet the needs of the equipment room; using a water-cooled system for multi-connected VRV The main disadvantage of the device is that the outdoor temperature is too low in winter, which may lead to low water cooling inlet temperature, resulting in low condensation pressure of the refrigerant when exchanging heat with the refrigerant, which may cause the entire multi-split system to deviate from the system operation. Outside the theoretical pressure curve, long-term operation will reduce the efficiency of the refrigeration system, reduce the life of refrigeration components, and greatly reduce the reliability of the refrigeration system

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