X-Ray Tube Filament Assembly for Concentrated Beam Energy
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Solution Overview
Problem
Conventional filament shapes in X-ray generators fail to concentrate X-ray beam energy, resulting in dispersed beam energy and inability to achieve high-efficiency dose and good resolution.
Innovation Solution
A method of manufacturing a filament by bonding a plate-shaped base with an electrode through high-temperature brazing and connecting a wire to the electrode using micro-spot welding, aligning the centers of the base, electrode, and disc to focus X-ray beam energy on a target.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If a conventional coil or spiral shaped emitter is used, then the filament structure is simple and easy to manufacture, but the X-ray beam energy cannot be concentrated resulting in dispersed beam energy and low resolution
Solution Approach 1:
The emitter is divided into multiple segments (first emitter segment, second emitter segment, third emitter segment) with different shapes and functions. The first segment has a planar shape for electron emission, the second segment has a curved shape for beam focusing, and the third segment has a pointed shape for precise beam concentration. This segmentation allows each part to perform its specific function optimally while achieving overall beam concentration capability.
Solution Approach 2:
Different portions of the emitter are given different geometric properties and material characteristics suited to their specific functions. The planar first segment provides a large surface area for electron emission, the curved second segment provides beam steering capability, and the pointed third segment provides precise focal point concentration. This local differentiation of properties enables the emitter to concentrate beam energy while maintaining manufacturing feasibility.
2Ease of manufacture
If a conventional coil or spiral shaped emitter is used, then the manufacturing process is simple, but the beam energy density is lowered and high-efficiency dose cannot be obtained
Solution Approach 1:
The emitter incorporates a curved second segment that can be elastically deformed or positioned to dynamically adjust the electron beam trajectory. This dynamic capability allows the beam to be steered and focused onto the target, concentrating energy density without requiring complex rigid structures. The elastic properties enable manufacturing simplicity while achieving dynamic beam control for high energy density.
3Measurement precision
If a conventional emitter shape is used, then the filament structure is straightforward, but the X-ray beam energy is dispersed and good resolution cannot be obtained
Solution Approach 1:
The emitter transitions from conventional two-dimensional planar or spiral shapes to a three-dimensional multi-segment structure with varying geometries along the length. The first segment is planar, the second segment introduces curvature in one dimension, and the third segment adds pointed concentration in another dimension. This dimensional progression enables precise beam focusing and concentration, achieving high imaging resolution while keeping each individual segment manufacturable.
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 new filament design concentrates X-ray beam energy in a narrow region, achieving high-efficiency dose and good resolution by focusing the beam on the target.
Implementation Method 1
bonding the base and the electrode by high-temperature brazing
Implementation Method 2
bonding the wire to the electrode by micro-spot welding
Implementation Method 3
heating the filament, electron emission is induced in the heated filament to emit electrons
Data Source
AI summary
The present inventive concept provides a method for manufacturing a filament including the steps of inserting and bonding an electrode having a desired length into a through-hole of a plate-shaped base to form a first part; bonding a wire having a desired length to one surface of a plate-shaped disc to form a second part; and bonding the electrode of the first part and the wire of the second part to form a filament, a filament manufactured by said method, and an X-ray tube having said filament.