Multi-Fan Air Handler for Precise HVAC Zone Distribution
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Traditional ducted HVAC systems with a single blower struggle to efficiently manage air distribution across multiple zones, requiring large plenums and field-installed dampers, which can be inefficient and lack precise control.
Innovation Solution
An air handler with multiple fans and air distribution modules, each equipped with a damper and fan, is controlled by a central controller to direct conditioned or fresh air to specific zones, utilizing an electrical heating element and a coil for efficient air circulation and temperature management.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a single blower is used in an indoor air handler, then the device complexity is reduced, but the air distribution efficiency and control precision across multiple zones deteriorates
Solution Approach 1:
The patent divides the air distribution system into multiple independent modules, each with its own fan and damper. This segmentation allows each module to independently serve specific zones, improving air distribution efficiency and control precision while maintaining manageable system complexity through modular design.
2Productivity
If a large plenum with multiple duct branches is used, then the air distribution coverage is improved, but the device complexity and space requirements increase
Solution Approach 1:
The patent eliminates the need for a large central plenum by segmenting the air distribution into multiple smaller modules distributed throughout the building. Each module has its own compact air handling and distribution components, reducing overall system complexity and space requirements while maintaining comprehensive coverage.
Solution Approach 2:
Instead of concentrating all air distribution in a single central location (zero-dimensional plenum), the patent distributes multiple air handling modules across different locations in the building (spatial distribution), transforming the system from centralized to distributed architecture.
3Adaptability or versatility
If field-installed dampers are used in duct branches, then the adaptability to different zones is improved, but the manufacturing precision and system reliability deteriorates
Solution Approach 1:
The patent integrates dampers as factory-pre assembled components within each air distribution module, rather than installing them separately in the field. This approach maintains zone control flexibility while ensuring precise damper installation and sealing through factory quality control processes.
Solution Approach 2:
The dampers and their mounting structures are pre-assembled and pre-tested in the factory before the modules are installed in the building. This preliminary action ensures precise installation and proper sealing without requiring field installation skills, thereby improving manufacturing precision and system reliability.
4Productivity
If all air distribution modules operate simultaneously, then the air distribution capacity is improved, but the energy consumption increases
Solution Approach 1:
The patent implements dynamic control of air distribution modules, where the controller activates only the modules needed to meet current zoning requirements. This dynamic operation allows the system to maintain adequate air distribution capacity while minimizing energy consumption by keeping unnecessary modules idle.
Solution Approach 2:
The controller provides localized control of individual air distribution modules based on specific zone demands. Each module can be independently activated or deactivated, allowing the system to match energy consumption to actual local needs rather than operating all modules uniformly.
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
This solution allows for precise control and efficient distribution of conditioned or fresh air across multiple interior zones, enhancing comfort and energy efficiency by operating only the necessary modules and minimizing energy consumption.
Implementation Method 1
a coil disposed within the first enclosure to allow a liquid to flow therethrough
Implementation Method 2
Each of the plurality of air distribution modules includes an electrical heating element, disposed within the second enclosure
Data Source
AI summary
An air handler configured with a plurality of air distribution modules, each including a fan, and at least one damper disposed within to provide and direct conditioned air or fresh air to respective multiple zones of a building.