Filter Housing Insertion Shaft for Switchgear Ventilation
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Solution Overview
Problem
The existing filter systems for switchgear cabinets and subrack carriers are difficult to exchange due to challenging access and the risk of damaging internal or external components, particularly when cable ducts and other obstructions are present, leading to complex and space-intensive designs.
Innovation Solution
A filter system that uses an insertion shaft for easy exchange of filter elements, allowing a two-dimensional path for the filter housing while actuation occurs one-dimensionally, enabling the filter to be inserted behind cable ducts and sealed against the ventilation opening without requiring significant modifications to the cabinet design, utilizing thrust and transverse displacement means to position the filter housing effectively.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the filter element is arranged in an air duct inclined relative to the vertical and fixed by a spring element, then the filter element can be secured in position, but the arrangement requires much space and the exchange procedure remains complicated
Solution Approach 1:
The filter housing is moved from a conventional vertical arrangement to a horizontal insertion path through an insertion shaft. The filter element is inserted horizontally from the front rather than vertically from above, changing the dimension of access and eliminating the need for complex spring fixation mechanisms while maintaining secure positioning.
Solution Approach 2:
The filter housing is completely extracted from the cabinet through the insertion shaft for replacement. This allows the filter to be changed from the front without reaching into difficult-to-access locations, eliminating the need for spring elements and complex fixation mechanisms while simplifying the exchange procedure.
2Reliability
If the filter element is inserted into the bottom region of the housing, then the ventilation opening can be effectively sealed, but cable ducts extending underneath or laterally form obstructions and increase the risk of damaging components
Solution Approach 1:
Instead of inserting the filter from the bottom vertically upward where cable ducts obstruct access, the filter is inserted horizontally from the front through an insertion shaft. This dimensional change allows the filter to reach the ventilation opening at the bottom without encountering cable ducts, maintaining effective sealing while greatly improving ease of operation.
3Reliability
If a toggle lever mechanism is used to move the filter into pressing position, then the filter can be tightly inserted, but the constructive design becomes complicated and requires much structural space
Solution Approach 1:
The filter housing is completely extracted from the cabinet through the insertion shaft for replacement. This eliminates the need for toggle lever mechanisms and complex pressing devices, as the filter can be easily inserted and removed from the front without requiring sophisticated fixation mechanisms.
Solution Approach 2:
The filter housing itself serves as the insertion and removal mechanism. By designing the insertion shaft to accommodate the filter housing's removal and reinsertion, the system eliminates the need for separate pressing devices, toggle levers, or complex fixation mechanisms, greatly simplifying the overall design.
Data Source
AI summary
The invention pertains to a filter system, particularly for cleaning the air of a switchgear cabinet to be ventilated, wherein a filter housing can be inserted into an insertion shaft in a first direction and is subjected to a motion perpendicular to the first inserting direction during the course of the inserting motion in order to reach the desired end position of the filter housing.