Two-stage system cooperative control method, device, controller and air handling unit

Abstract

The present invention relates to a dual-stage system collaborative control method, device, controller and air handling unit. The dual-stage system collaborative control method includes: acquiring environmental working conditions and user demand information; and the user's demand information to calculate the capacity requirement of the unit; determine the operating status of the two systems according to the capacity requirement of the unit and the rated capacity of the outdoor unit of each system; control the operation of the two systems according to the operating status. The present invention reasonably controls the operating states of the two systems through environmental working conditions, user demands, and the accumulated running time of the system, realizes rotation, and solves the uneven load distribution of the two-stage systems under non-standard load conditions when the two-stage systems are opened at the same time problems; and, when the low-load single-stage system is running, the first-stage system is always turned on, and the start-up is uneven, which effectively improves the reliability of the whole machine operation.

Description

technical field [0001] The invention relates to the technical field of two-stage air treatment, in particular to a two-stage system cooperative control method, device, controller and air treatment unit. Background technique [0002] As people pay more and more attention to fresh air and air quality, the market has higher and higher requirements for the air treatment degree of large-scale direct expansion air handling units. In order to meet the needs of users for advanced air treatment, a two-stage refrigeration air treatment method is proposed. [0003] However, the processing and control methods between the two stages of the currently used dual-stage system are completely independent, which will have the following problems: [0004] 1. When the two-stage systems are both turned on, the load adaptability is poor, and the two-stage systems of the unit are cooled according to the same predetermined target, resulting in uneven load distribution of the two-stage systems under o...

AI Technical Summary

Problems solved by technology

[0006] In view of this, the purpose of the present invention is to overcome the deficiencies of the prior art and provide a dual-stage system cooperative control method, device, controller and air handling unit to solve the problem of two The problem of uneven load distribution of the first-level system; and, when the low-load single-level system is running, the first-level system is always turned on, and the startup is uneven

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