Ventilation system
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Solution Overview
Problem
High-rise building ventilation systems face challenges in maintaining constant air flow due to external environmental conditions and wind direction, leading to inefficient energy use and uneven air distribution across floors, particularly in decentralized systems, and excessive air supply to lower floors in central systems.
Innovation Solution
A ventilation system with ventilators installed on each floor, connected to a central duct system that includes a pressure sensor to adjust air flow based on measured pressure, ensuring consistent air delivery and reducing energy consumption by optimizing fan operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If decentralized ventilation system is used, then each home can directly supply and discharge air, but ventilation performance deteriorates due to external wind conditions and direction changes
Solution Approach 1:
The patent introduces a building management system as an intermediary between external environment and individual home ventilators. This central controller receives wind condition information and adjusts ventilator operations accordingly, mediating the impact of external wind on internal ventilation performance.
Solution Approach 2:
The system implements feedback control by monitoring actual ventilation performance and wind conditions, then adjusting fan speeds and air flow rates dynamically. This closed-loop control ensures stable ventilation despite varying external conditions.
2Productivity
If decentralized ventilation system operates at high fan speed to maintain air flow during no-wind conditions, then constant air flow is supplied, but unnecessary energy loss occurs
Solution Approach 1:
The patent applies dynamic operation by continuously adjusting fan speed based on real-time wind condition monitoring. During windy periods, fans operate at lower speeds leveraging natural air movement, while during calm periods they increase speed as needed, optimizing energy consumption while maintaining ventilation effectiveness.
Solution Approach 2:
The system changes operational parameters (fan speed, air flow rate) dynamically based on environmental conditions. This parameter adjustment allows the system to adapt to varying wind conditions, reducing energy consumption during favorable conditions while maintaining performance during unfavorable conditions.
3Device complexity
If central ventilation system uses single ventilator for entire building, then system configuration is simplified, but large area and volume are required for devices
Solution Approach 1:
The patent segments the central ventilation system into multiple distributed ventilators located in different building zones or floors. Each ventilator serves a specific area, reducing the volume and complexity of individual devices while maintaining overall system functionality through coordinated control.
4Productivity
If central ventilation system increases fan speed to supply air to high floors, then sufficient air flow reaches upper floors, but excessive air flow is supplied to lower floors
Solution Approach 1:
The patent implements local quality control by equipping different ventilation zones with independently controllable ventilators or dampers. This allows each floor or zone to receive appropriate air flow based on its specific requirements, preventing over-ventilation of lower floors while ensuring sufficient supply to upper floors.
Solution Approach 2:
The system divides the building into multiple ventilation zones with separate control mechanisms. This segmentation enables independent adjustment of air flow to different floors, optimizing distribution efficiency and preventing the over-supply problem that occurs with single centralized fan control.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The system provides stable and uniform air flow to all floors, regardless of external conditions, while minimizing energy usage by dynamically controlling fan operation based on pressure readings, thus addressing the inefficiencies of existing systems.
Implementation Method 1
the center duct is provided with at least one pressure sensor
Implementation Method 2
a blowing unit that is provided at one side of the center duct and forcibly blows the air in the center duct
Data Source
Figure 1~2
Figure 3
Figure 4
AI summary
The present invention relates to a ventilation system. According to a ventilation system of an embodiment of the present invention, it is possible to supply constant air flow to each floor or home, regardless of changes in environment outside a building, by connecting a ventilator to a center duct that sucks external air and supplies it to each floor or home, or sucks internal air of each floor of home and discharges it to the outside the building.