Vacuum Filter Cleaning Flap for Selective Pulse Airflow
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Solution Overview
Problem
Existing filter cleaning methods, such as those using X-shaped flap elements, suffer from energy loss due to air pulse usage for switching and require significant effort and expense for complex valve actuation, resulting in reduced cleaning effectiveness.
Innovation Solution
A Y-shaped flap element actuated by a cost-effective servomotor drive, allowing for three pivot positions, including a central operational position and selective cleaning of each filter half with pulse-like cleaning air flow, utilizing a single solenoid for control.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If an X-shaped flap element is used for switching between filter halves, then the flap can be actuated by pressure differences, but energy is lost because the air pulse is used for both switching and cleaning
Solution Approach 1:
The invention separates the switching function from the cleaning function by using a Y-shaped flap with two independently controllable flap parts. Each flap part can be actuated separately by its own solenoid, allowing one flap part to control switching while the other controls cleaning air flow. This segmentation eliminates the energy loss that occurred when a single flap had to perform both functions simultaneously.
2Reliability
If two electromagnetically actuated three-way valves are used for switching, then reliable cleaning of both filter halves can be achieved, but the device complexity and implementation cost increase significantly
Solution Approach 1:
The invention merges the functions of two separate three-way valves into a single Y-shaped flap element with two flap parts. Both flap parts are actuated by solenoids mounted on a common actuation body, integrating what would have been two separate valve mechanisms into one unified structure. This reduces device complexity while maintaining the reliability of cleaning both filter halves independently.
Solution Approach 2:
The Y-shaped flap element serves multiple functions: it acts as a switching mechanism to direct air flow to different filter halves, and simultaneously serves as a control mechanism for delivering cleaning pulses. The single flap structure with two actuable parts replaces multiple specialized valves, achieving multi-functionality while reducing overall system complexity.
3Device complexity
If a single solenoid actuates both flap parts of the Y-shaped element, then device complexity is reduced, but selective actuation of individual flap parts becomes difficult
Solution Approach 1:
Although a single solenoid is used, it is designed with a dual-arm actuation mechanism where each arm can independently engage with its corresponding flap part. The solenoid body includes two separate actuation arms that can be selectively engaged to move either the first or second flap part, or both simultaneously. This segmented actuation approach maintains device simplicity while enabling selective operation of individual flap parts.
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 enables improved cleaning effectiveness by allowing multiple cleaning pulses on one filter half and efficient switching between filter halves, reducing energy loss and implementation costs.
Implementation Method 1
an approximately Y-shaped flap element, comprising two flap parts that are disposed at an angle to one another, is now actuated by a cost-effective servomotor drive
Implementation Method 2
an electromagnetically actuated solenoid being used for actuation of this control flap
Implementation Method 3
the particular filter compartment with the filter half to be cleaned is first disconnected from the suction air flow of the suction turbine and a false-air flow that is generated from the blow-out-air flow of the suction turbine
Implementation Method 4
an approximately X-shaped flap element disposed in a housing abruptly changes its position by utilizing differences in pressure between the suction air flow and the atmospheric pressure
Data Source
AI summary
The invention relates to filter cleaning in a vacuum having a switchable flap element, the cleaning of the filter or of parts of the filter being carried out by supplying a secondary air flow to the interior of the filter to be cleaned, and air being able to flow through the filters separately from each other from the outside to the inside in the vacuum container in a sealed manner, and a flap element disposed in a chamber housing being pivotable, by means of the pivoting of which openings may be closed and released, the secondary air flow reaching the surface of the filter to be cleaned from the inside toward the outside in pulses, characterized in that the flap element comprises at least two partial flaps, the pivoting of which is actuated by a pivot drive, the respective partial flap optionally closes the outflow opening of the respective filter chamber in the direction of the intake opening of the suction turbine, the blow-out side of the suction turbine delivers the created overpressure air into an overpressure chamber in which a chamber housing is disposed, the at least one drive element to be suddenly actuated comprises openings to be opened and closed, upon the opening of which the overpressure air flows through the chamber housing optionally into an impulse channel which branches off at that location and introduces the air into one or into the other filter chamber for cleaning.