Vacuum Filter Backflushing Using Recaptured Exhaust Air
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Solution Overview
Problem
Existing vacuum filter systems are inefficient in separating debris from air, particularly in high-debris environments like tile removal, leading to health risks and environmental concerns due to dust emission, and require costly and complex components for effective cleaning.
Innovation Solution
A vacuum filter backflushing system that uses an air recapturing adapter to redirect exhaust air back into a recaptured air passage, which is then directed through the filters in a reverse flow to dislodge debris, utilizing valve systems to alternate between normal and backflushing orientations to maintain efficiency and reduce component complexity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional vacuum filter systems are used in high-debris environments, then debris separation is insufficient, but adding more complex filtering components increases system complexity and cost
Solution Approach 1:
The patent applies reverse flow backflushing where air is directed through the filter in the opposite direction of normal operation. This inversion of airflow direction dislodges trapped particles from the filter media, cleaning the filter without requiring complex additional components. The recaptured air passage redirects exhaust air to flow through the filter element backwards, achieving self-cleaning functionality.
Solution Approach 2:
The system uses its own exhaust air to clean the filter elements through backflushing. The recaptured air passage captures a portion of the exhaust air and redirects it through the filter in reverse direction, allowing the system to self-clean without requiring external cleaning resources or complex additional components.
2Productivity
If filter cleaning components are added to maintain efficiency, then filtering performance is improved, but system cost and component size increase
Solution Approach 1:
The recaptured air passage serves multiple functions: it captures exhaust air, redirects it for backflushing, and maintains system pressure. The valve system integrates cleaning control with the main vacuum operation, allowing a single component to perform multiple functions rather than requiring separate dedicated cleaning components.
Solution Approach 2:
The patent uses pneumatic pressure from the vacuum motor to drive the backflushing process. The recaptured air passage utilizes the existing air pressure differential to force air through the filter in reverse direction, eliminating the need for additional motors, pumps, or mechanical cleaning mechanisms.
3Object-affected harmful factors
If continuous filtration is maintained in high-debris settings, then air quality is improved, but dust emission and environmental impact increase without effective backflushing
Solution Approach 1:
The system implements periodic backflushing cycles where the valve alternates between normal filtration mode and reverse flow cleaning mode. During normal operation, air is filtered and exhausted; periodically, the valve redirects exhaust air to backflush the filter, dislodging trapped particles. This periodic action maintains filter efficiency and prevents dust emission while ensuring continuous air quality.
Solution Approach 2:
The recaptured air passage creates a feedback loop where exhaust air is monitored and redirected based on system operation. The valve system responds to filtration needs by redirecting a portion of exhaust air back through the filter, creating a self-regulating system that maintains air quality by preventing dust emission through continuous filter maintenance.
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 effectively dislodges trapped particles from filters, improving air quality and reducing environmental impact while minimizing the need for large and costly components, enhancing the overall efficiency and safety of vacuum operations in debris-intensive settings.
Implementation Method 1
the recaptured air passage allows for the recaptured air to be directed towards air filters and backflushed when an air flow director is oriented such that the recaptured air moves through the air filter in a reverse direction
Implementation Method 2
an air recapturing adapter proximate the air exhaust port, wherein the air recapturing adapter is configured to redirect a portion of exhaust air into a recaptured air passage
Data Source
AI summary
A vacuum filter backflushing system having an air recapturing adapter coupled to a vacuum motor's air exhaust port which recaptures a portion of exhaust air and introduces the air into a recaptured air passage. The recaptured air passage is coupled to an air flow director which is configured to direct air to an air filter. The air flow director is configured to selectively prevent air from flowing through the filters in a normal air flow direction and allow the air in the recaptured air passage to backflush the filter by dislodging particles from air filter media. The recaptured air passage can terminate after a last air filter, such that the recaptured air passage is pressurized, or the recaptured air passage can recouple back into the air exhaust port or the air recapturing adapter, such that the air is in constant motion in the recaptured air passage.