System and method for controlling tail end of air-quality-variable central air-conditioner

Abstract

The invention relates to a system and a method for controlling the tail end of an air-quality-variable central air-conditioner, wherein the system is provided with a return air inlet, a return air pipeline and a linked valve for controlling the make-break of an air outlet and the return air inlet, and the method comprises the following steps that: a user sets a temperature value; when the actual temperature does not meet the set requirement, cold air or warm air in an air-quality-variable central air-conditioner system is conveyed into a room; when the actual temperature meets the set requirement, the cold air or the warm air returns to the central air-conditioner system directly without passing through the room; and when the actual temperature does not meet the set requirement again, the steps are repeated. The system and the method control the air guidance at the tail end, so that the central air-conditioner system achieves complete closed loop relative to the controlled tail end, the temperature control precision at the tail end and the comfort level of using the system are improved, and the energy service efficiency is further improved; besides, the system and the method save energy and reduce consumption and are advantageous for the popularization and the application of the air-quality-variable central air-conditioner system.

Description

technical field [0001] The invention relates to a central air-conditioning terminal control system and method, in particular to a variable air volume central air-conditioning terminal control system and method capable of realizing terminal closing. Background technique [0002] The variable air volume central air-conditioning system is regarded as a relatively advanced central air-conditioning control technology due to its flexible and effective temperature control, flexible system structure installation, strong use comfort, low energy consumption, low noise, and no condensed water troubles. The existing variable air volume central air-conditioning system consists of four parts: an air constant pressure source system, a temperature control system, an air delivery pipeline system and a terminal control system (VAV BOX). Among them, the VAV BOX must have a minimum air volume according to the design requirements. One is to facilitate system testing, and the other is to prevent ...

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Problems solved by technology

[0004] It can be seen that the above-mentioned variable air volume central air-conditioning terminal control system and method have the advantages of energy saving and easy control, and are indeed progressive. Objective existence, resulting in large temperature deviation of the controlled object, making the existing variable air volume central air conditioning system fail to achieve the best use effect in practical applications, and hindering the wide application of variable air volume central air conditioning system

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