Ionization Device with Open-End Bulb and Mechanical Cover Sealing
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Solution Overview
Problem
The production process of existing ionizing devices is complex and costly due to challenges in forming and sealing the bulb, leading to potential mechanical weakness, dimensional inaccuracies, and inefficiencies in electrical parameters, as well as requiring time-consuming adhesive fixing and risk of damage during maintenance.
Innovation Solution
The ionizing device features a tubular bulb with both open terminal ends sealed by removable covers, using elastomeric gaskets and a conductive electrode with mutually spaced crowns for improved adhesion and assembly, eliminating the need for adhesives and simplifying the production process.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the bulb terminal end is closed using thermal softening and manual shaping, then the bulb can be sealed, but the production time increases and dimensional precision deteriorates
Solution Approach 1:
The patent replaces the thermal softening process with a mechanical pressing operation. A mold is pressed against the bulb terminal end to form the closed end, eliminating the need for thermal softening and manual shaping. This mechanical approach significantly reduces production time while maintaining consistent dimensional precision.
Solution Approach 2:
The patent incorporates a pre-formed dome-shaped end on the bulb before the closing operation. This preliminary preparation allows the closing process to be completed quickly by simply pressing the terminal end against the mold, rather than forming the dome shape during the closing operation itself.
2Reliability
If the bulb terminal end is closed using thermal softening and manual shaping, then the bulb can be sealed, but manufacturing precision deteriorates due to dimensional inaccuracies and thermal alterations
Solution Approach 1:
The patent replaces the thermal softening process with a mechanical pressing operation. A mold is pressed against the bulb terminal end to form the closed end, eliminating the need for thermal softening and manual shaping. This mechanical approach significantly reduces production time while maintaining consistent dimensional precision.
3Reliability
If the cover is mounted on the bulb with adhesive, then hermetic sealing can be achieved, but production time increases due to adhesive hardening wait time
Solution Approach 1:
The patent replaces the adhesive bonding process with a mechanical pressing operation. The cover is pressed directly onto the bulb terminal end, where it is held in position by friction and the interference fit between the cover's internal seat and the bulb's external dimensions. This eliminates the need for adhesive hardening wait time while maintaining hermetic sealing through the precision of the mechanical fit.
4Reliability
If the cover is mounted on the bulb with adhesive, then hermetic sealing can be achieved, but device complexity increases due to adhesive application and positioning requirements
Solution Approach 1:
The patent replaces the adhesive bonding process with a mechanical pressing operation. The cover is pressed directly onto the bulb terminal end, where it is held in position by friction and the interference fit between the cover's internal seat and the bulb's external dimensions. This eliminates the need for adhesive hardening wait time while maintaining hermetic sealing through the precision of the mechanical fit.
5Reliability
If the conductive electrode is positioned during assembly, then electrical connectivity can be established, but positioning precision deteriorates leading to malfunctioning
Solution Approach 1:
The patent incorporates a pre-formed recess in the cover that receives the conductive electrode before the cover is pressed onto the bulb. This preliminary positioning ensures that the electrode is correctly located relative to the bulb's terminal end, preventing misalignment and ensuring proper electrical connectivity without requiring complex positioning operations during assembly.
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 design enhances the strength and assembly efficiency of the ionizing device, reduces production time, ensures high hermetic sealing, and improves electrical performance by ensuring uniform charge distribution and correct positioning of components.
Implementation Method 1
an elastomeric gasket arranged in an annular groove of the cover, wherein the gasket is compressed between the cover and the bulb so as to create hermetic sealing between the cover and the bulb
Implementation Method 2
designed to generate an electric field that causes the corona effect when it is supplied with 'high voltage'
Implementation Method 3
ionize the air around it
Data Source
AI summary
An ionizing device is described, comprising a tubular bulb made of electrically insulating or dielectric material extending along a longitudinal reference axis and having the two longitudinal open ends and opposite each other, a tubular cathode engaged in the bulb, a tubular anode fitted to the bulb, a pair of covers, each of which has a respective internal seat into which a respective end of the bulb is inserted so as to hermetically seal it, and a conductive electrode which extends into the bulb and is electrically connected to the cathode.