Fresh air system and air valve opening control method thereof

Abstract

The invention discloses a fresh air system and an air valve opening control method thereof. The air valve opening control method of the fresh air system comprises the following steps: S10, detecting the air quality of return air; S20, judging whether the air quality of the return air meets the set requirement or not, and when the set requirement is met, entering S30; when the set requirement is not met, entering S40; S30, introducing fresh air according to a fresh air mode so as to increase the opening of a fresh air valve and/or reduce the opening of a return air valve; S40, determining the opening of the fresh air valve and the return air valve according to an energy saving curve. According to the air valve opening control method disclosed by the invention, energy-saving optimization can be realized on the basis that the air valve opening is intelligently regulated.

Description

technical field [0001] The invention relates to the technical field of building ventilation and air conditioning, in particular to a fresh air system and a method for controlling the opening of a damper. Background technique [0002] As the user's demand for air quality and energy saving is getting higher and higher, how to achieve the lowest energy consumption under the premise of ensuring air quality will be a goal pursued by people. [0003] Existing fresh air system air valves are adjusted by manually adjusting the opening. For example, during installation and commissioning, it is manually adjusted to a certain opening to meet the requirements of use. After that, the system cannot be automatically adjusted according to indoor and outdoor air quality or environmental changes. regulation, resulting in the following defects in the prior art: [0004] 1. The air valve can only be adjusted manually, which is not smart; [0005] 2. The opening of the air valve cannot be auto...

AI Technical Summary

Problems solved by technology

[0004] 1. The air valve can only be adjusted manually, which is not smart;

[0005] 2. The opening of the air valve cannot be automatically adjusted according to the change of the environment, and the ratio of fresh air and return air cannot be changed accordingly

[0006] In addition, although some fresh air systems can intelligently adjust the ratio of fresh air and return air, they only pay attention to the air quality requirements and ignore the energy consumption requirements, and have the defect of not saving energy.

For example, in the Chinese invention patent with the application number "201310637045.5" and the invention title "A fresh air system and intelligent control method based on supply air quality early warning", a fresh air system and intelligent control method based on supply air quality early warning are disclosed. The control method, in this application, only detects and compares the quality of indoor and outdoor air to determine the opening of the fresh air and return air valves to determine the fresh air volume, but it cannot meet the requirements of energy-saving optimization at the same time

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