Modular return air device
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Solution Overview
Problem
Current air return vents in HVAC systems are difficult and time-consuming to install, update, and service, and lack external and electronic control capabilities, which is problematic for maintaining sterile environments in medical settings.
Innovation Solution
A modular return air device with integrated sensors, dampers, and electronic control modules that facilitate airflow management, temperature control, disinfection, and sealing, enabling rapid installation and advanced air quality monitoring and control.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If traditional air return vents are used, then the HVAC system can return air, but the installation is difficult and time-consuming
Solution Approach 1:
The return air device is divided into modular components including a body portion, a return air grille, and a motorized damper assembly that can be independently manufactured and assembled. This segmentation enables faster installation by allowing components to be pre-assembled and quickly installed as a unit, reducing on-site construction time and complexity.
Solution Approach 2:
The return air device integrates multiple functions into a single unit: air return, motorized damper control, sensor monitoring, and integration with HVAC systems. This multi-functionality eliminates the need for separate components and reduces installation steps, thereby improving installation productivity while managing complexity through standardized integrated design.
2Extent of automation
If traditional air return vents are used, then air can be returned, but external and electronic control is not enabled
Solution Approach 1:
The device incorporates sensors that monitor airflow, temperature, and other environmental parameters, providing feedback to the motorized damper and HVAC control system. This enables automatic adjustment of airflow based on real-time conditions, achieving electronic control and automation while managing complexity through sensor-integrated feedback loops.
Solution Approach 2:
The motorized damper automatically adjusts airflow based on sensor input and pre-programmed logic, enabling the system to self-regulate without constant manual intervention. This self-service capability provides electronic control and automation while reducing the operational complexity for end users.
3Ease of repair
If traditional air return vents are used, then air return function is provided, but updating and servicing is difficult
Solution Approach 1:
The modular construction with separable body, grille, and damper assemblies allows individual components to be accessed, removed, and serviced independently. This segmentation greatly improves serviceability by enabling technicians to replace or maintain specific components without dismantling the entire device, while the standardized modular design keeps service procedures simple and repeatable.
4Ease of operation
If modular design with sensors and electronic controls is implemented, then airflow management and monitoring are improved, but device complexity increases
Solution Approach 1:
The integrated design combines motorized damper, sensors, and control electronics into a single return air device unit. This multi-functionality provides advanced airflow management and monitoring capabilities while presenting a unified interface that simplifies operation. The standardized integration manages complexity by consolidating multiple functions into one cohesive device rather than requiring coordination of separate components.
Data Source
AI summary
A modular return air device includes a body and a first air return configured to facilitate incoming air to enter the body, wherein the body has a grille and a damper. The modular return air device further includes one or more sensors configured to collect data regarding the incoming air and a second air return configured to facilitate the air to exit the body of the modular return air device.