Air Ventilation Filter Housing with Side-Wall Clamping
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Solution Overview
Problem
In air ventilation systems, existing filter housings with mechanical clamping mechanisms can cause leakage of hazardous substances during filter replacement due to improper positioning or clamping, and obstruct airflow when a probe is needed downstream for leak detection.
Innovation Solution
A filter housing design with clamping mechanisms located on opposite walls, allowing for unobstructed airflow and probe placement downstream, featuring a handle system with a security element to ensure correct filter mounting and a biasing spring for secure clamping, preventing reverse handle rotation if the filter is incorrectly positioned.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a mechanical clamping mechanism is mounted downstream under the filter, then the structure is simpler, but it causes air flow obstruction
Solution Approach 1:
The clamping mechanism is relocated from the downstream area (where it would obstruct airflow) to the side walls of the filter housing. This spatial repositioning moves the clamping function to a different dimension (side walls instead of downstream space), eliminating airflow obstruction while maintaining clamping effectiveness.
2Device complexity
If the clamping mechanism is mounted on the downstream side, then the structure is simpler, but it provides no clear indicator of correct filter positioning
Solution Approach 1:
The filter holder includes visual indicators (such as colored markings or position indicators) that change appearance or position based on filter installation status. When the filter is correctly positioned, the indicators display a specific visual state, providing clear feedback to operators without complicating the clamping mechanism structure.
Solution Approach 2:
The system incorporates visual feedback mechanisms that provide real-time information about filter positioning status. The indicators give immediate visual confirmation whether the filter is correctly installed, allowing operators to verify proper installation before closing the housing.
3Strength
If a tool-operated clamping mechanism is used, then the clamping force is sufficient, but it is troublesome to operate within the bag
Solution Approach 1:
The clamping mechanism is designed to be self-operating through a simple handle operation that directly actuates the clamping action. The handle mechanism translates simple manual motion into effective clamping force without requiring complex tool operation, making it easy to use within the confined space of the bag.
Solution Approach 2:
A mechanical intermediary (the handle linkage system) converts simple handle movement into the required clamping force. This intermediary mechanism amplifies the operator's input force and translates it into sufficient clamping pressure, eliminating the need for complex tools while maintaining adequate clamping strength.
4Measurement precision
If the probe is mounted close to the filter surface, then leak detection precision is improved, but the clamping mechanism obstructs the air flow to the probe
Solution Approach 1:
The probe mounting position is optimized by relocating it to an area downstream of the filter that is not obstructed by the side-mounted clamping mechanism. This spatial repositioning allows the probe to remain close enough to the filter for effective leak detection while avoiding airflow obstruction from the clamping mechanism.
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
Ensures secure and leak-free filter exchange with unobstructed airflow for probe operation, preventing hazardous substance leakage and facilitating correct filter mounting through the handle mechanism.
Implementation Method 1
a biasing spring for biasing the filter holder in a clamping direction
Data Source
AI summary
A filter housing is adapted to be mounted in an air ventilation system and includes: an upstream air entrance opening defined by an air entrance opening frame, a downstream air exit opening defined by an air exit opening frame, a rear wall, a front opening opposite to the rear wall, a cover sealing the front opening, a movable filter holder arranged within the housing and arranged to receive a filter through the front opening, and two clamping mechanisms arranged at opposite first and second walls of the housing. Each clamping device has a release device engaged with the filter holder, and is arranged for releasing the filter from the clamped position to a released position by moving the filter holder.