Intake Hood Filter Assembly for Rapid HVAC Filter Replacement
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Solution Overview
Problem
Existing HVAC systems face difficulties in efficiently accessing and replacing air filters due to complex service procedures that often require disassembly of system components, leading to lengthy service times and component wear.
Innovation Solution
An intake hood system with supports, brackets, and side panels that facilitate quick and efficient assembly/disassembly of air filters, allowing for easy access and replacement without extensive disassembly of the HVAC system.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the HVAC system is configured with a fixed intake system, then the structural integrity is maintained, but the filter access becomes difficult requiring disassembly of intake system portions
Solution Approach 1:
The intake hood is divided into a fixed portion and a movable portion that can be independently displaced. The movable portion includes the filter holder assembly, allowing the filter to be accessed by simply moving this segment without disassembling the entire intake system. This segmentation resolves the contradiction by providing easy filter access while maintaining the structural integrity of the fixed intake system.
Solution Approach 2:
The filter holder assembly is designed with movable characteristics, allowing it to be displaced between a retracted position (when not in use) and an extended position (when filter access is needed). This dynamic design enables easy filter replacement without permanent disassembly, resolving the contradiction between structural integrity and ease of filter access.
2Ease of operation
If the filter holder assembly is permanently extended, then filter access is maximized, but the intake hood structural integrity is compromised
Solution Approach 1:
The filter holder assembly transitions from a static extended position to a dynamic movable position. It can be extended when filter access is needed and retracted when not in use, maintaining the structural integrity of the intake hood while providing maximum filter accessibility when required. This dynamic capability resolves the contradiction between structural strength and filter accessibility.
Solution Approach 2:
The intake hood is segmented into fixed and movable portions, with the filter holder assembly forming a separate movable segment. This segmentation allows the filter holder to be extended for access without compromising the structural integrity of the main intake hood body, as the movable portion is designed to bear the additional stress when extended.
3Ease of operation
If service personnel must remove intake system portions to access the filter, then complete filter access is achieved, but service time increases
Solution Approach 1:
The movable filter holder assembly can be quickly extended and locked into position, allowing service personnel to access the filter without the time-consuming process of disassembling the entire intake system. This dynamic mechanism reduces service time from potentially lengthy disassembly/reassembly operations to a simple extension and locking action.
Solution Approach 2:
By segmenting the filter holder assembly as a separate movable component, the system allows filter access through simple displacement of this segment rather than removal of entire intake system portions. This segmentation dramatically reduces service time while maintaining complete filter accessibility.
4Ease of repair
If the filter holder assembly is made movable for easy access, then serviceability is improved, but the device complexity increases
Solution Approach 1:
The filter holder assembly incorporates a movable mechanism with guide channels and locking members, but these components are integrated into the existing intake hood structure. The guide channels are formed within the movable portion, and locking members engage with corresponding features on the fixed portion, creating a dynamic system that improves filter replacement ease while adding minimal complexity to the overall device.
Solution Approach 2:
The movable filter holder assembly is merged with the intake hood structure through integrated guide channels and locking mechanisms. Rather than being a completely separate complex mechanism, the movable portion utilizes the existing intake hood framework, combining the simplicity of the original design with the added functionality of easy filter access.
Data Source
AI summary
An intake hood system for a heating, ventilation, and/or air conditioning (HVAC) unit includes an intake hood having an inlet configured to receive an air flow into the intake hood, a first support configured to engage a first end of an air filter, and a second support configured to engage a second end of the air filter, where the first support is configured to align with a boundary of the inlet. The intake hood system also includes a lock bar configured to couple to the intake hood while abutting the first support and the second support to secure the air filter within the intake hood.