Magnetron Anode Strap Ring Asymmetry for Stability
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
The manufacturing of magnetrons is costly and inefficient due to the use of sheet metal at low efficiency, leading to high material costs and difficulties in achieving balanced electrical potential and oscillation stability.
Innovation Solution
A magnetron design featuring an anode cylinder with an even number of vanes arranged radially, connected by three strap rings of varying diameters, where the first strap ring is on one end, the second strap ring has an outer diameter equal to the inner diameter of the first, and the third strap ring has an outer diameter equal to or less than the inner diameter of the second, optimizing material usage and assembly.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If four strap rings (two large and two small) are arranged on both ends of vanes, then oscillation stability and electrical potential balance are improved, but material cost increases and manufacturing efficiency decreases
Solution Approach 1:
The patent applies asymmetry by using three strap rings with different diameters (first large, second large, third small) instead of symmetric four strap rings. The asymmetric arrangement with varying diameters maintains electrical potential balance and oscillation stability while reducing material usage and manufacturing complexity compared to the symmetric four-ring design
2Reliability
If four strap rings are produced by punching copper sheets, then electrical potential balance is achieved, but sheet metal utilization efficiency is low and material cost increases
Solution Approach 1:
The patent changes the parameters of strap rings by using three different diameters (first large, second large, third small) instead of two sizes. This parameter variation allows optimized material utilization when punching copper sheets, reducing waste while maintaining the electrical potential balance required for proper magnetron operation
3Reliability
If two large and two small strap rings are used, then good oscillation stability is achieved, but the number of copper sheets required increases
Solution Approach 1:
The patent extracts one strap ring from the traditional four-ring configuration, reducing from four to three strap rings. This extraction maintains the essential function of electrical potential balance and oscillation stability while reducing the quantity of copper sheets required and simplifying the overall structure
Data Source
AI summary
A magnetron has an anode cylinder, ten vanes, three strap rings. The ten vanes are fixed to an inner surface of the anode cylinder and arranged in a radial pattern of which center is at an axis of the anode cylinder. Each of the three strap rings connects vanes that are alternatively arranged. A first strap ring and a third strap ring are arranged on a first end of the vanes in a direction of axis, and a second strap ring is arranged on a second end that is opposite to the first end. Outer diameter of the second strap ring is equal to inner diameter of the first strap ring and outer diameter of the third strap ring is equal to inner diameter of the second strap ring.