Filter Device Coded Key-Lock System for Correct Installation
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Solution Overview
Problem
Filter devices often malfunction or suffer damage due to the installation of inappropriate filter elements, leading to reduced performance or economic losses, as existing technologies lack effective mechanisms to ensure correct installation and prevent the use of unsuitable filter elements.
Innovation Solution
A filter device with a coded key-lock system that ensures correct installation through mechanical engagement of the filter element with the housing, preventing incorrect or unauthorized filter elements by using key or lock parts that represent filter specifications, forming a rotation lock and providing protection against unlicensed products.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If filter elements are made interchangeable for easy replacement, then ease of operation is improved, but reliability deteriorates due to risk of incorrect installation
Solution Approach 1:
The patent applies asymmetry by providing the filter element with a coded identification (specific geometric pattern or configuration) that corresponds to a specific holder type. The holder is designed with a complementary asymmetric structure that only accepts the correct filter element code. This asymmetric coding system ensures that filter elements with different codes (representing different specifications such as filter surface, fineness, or differential pressure resistance) cannot be incorrectly installed in incompatible holders, thus maintaining reliability while preserving ease of replacement through a simple mechanical engagement system.
2Adaptability or versatility
If multiple filter specifications are supported, then adaptability is improved, but device complexity increases due to need for coding system
Solution Approach 1:
The patent applies local quality by concentrating the coding information in a specific localized feature on the filter element (such as a coded pattern on the end cap or housing interface). This localized code represents multiple specifications (filter surface, fineness, differential pressure resistance) in a compact form. The holder contains corresponding localized recognition features that read this code and enable or disable engagement based on compatibility. This approach allows support for multiple filter specifications without significantly increasing overall device complexity, as the coding mechanism is confined to specific local areas rather than requiring system-wide complexity.
Data Source
AI summary
A filter device has a housing (3, 5) and a filter element (23) that can be received in the housing in a replaceable manner. The housing and filter element engage with at least two key parts (53, 56, 58) or lock parts. The lock parts (57) or key parts of the housing (3, 5) are associated with each other respectively in pairs in an engaged manner, as a coding and/or setting and/or functional structure and/or reproduction protection.