Device and method for extruding a solid body
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Solution Overview
Problem
Existing extrusion devices for producing solid hydrogen or deuterium targets at cryogenic temperatures are complex, difficult to manufacture, and require precise control of temperature and pressure, making them challenging to integrate with other devices like tokamaks or proton therapy systems, and often involve moving parts.
Innovation Solution
A device with a cell structure that applies a temperature gradient between the inlet and outlet orifices to generate pressure for extrusion, using a control circuit to form a solid phase volume that obstructs the outlet, allowing for extrusion without moving parts, by regulating temperatures to create a pressure gradient for film formation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If traditional extrusion devices are used to produce solid hydrogen or deuterium targets, then extrusion can be achieved, but the device complexity increases and integration becomes difficult
Solution Approach 1:
The patent replaces mechanical moving parts (screws, pistons, valves) with a thermal field-based extrusion mechanism. A heating element localized at the die tip creates a small molten cavity that acts as a thermal pump, driving material extrusion through temperature gradients rather than mechanical force. This substitution eliminates complex mechanical components while maintaining reliable extrusion function.
Solution Approach 2:
The invention changes the control parameter from mechanical pressure/force to temperature gradient. By precisely controlling the temperature distribution within the extrusion chamber and die, particularly creating a localized hot zone at the die tip, the system achieves material flow control without mechanical moving parts. This parameter change simplifies the device structure while improving reliability.
2Ease of operation
If moving parts are used in extrusion devices, then extrusion control is achievable, but the device becomes difficult to manufacture and integrate
Solution Approach 1:
The patent replaces mechanical moving parts (screws, pistons, valves) with a thermal field-based extrusion mechanism. A heating element localized at the die tip creates a small molten cavity that acts as a thermal pump, driving material extrusion through temperature gradients rather than mechanical force. This substitution eliminates complex mechanical components while maintaining reliable extrusion function.
Solution Approach 2:
The invention extracts and removes all moving parts from the extrusion system. By eliminating screws, pistons, and valves, the device becomes a static structure with simplified manufacturing. The extrusion control function is transferred to the thermal field, which is controlled by stationary heating and cooling elements.
3Manufacturing precision
If precise temperature and pressure control is implemented, then extrusion quality improves, but device complexity increases
Solution Approach 1:
The patent applies local quality by creating a highly localized hot zone only at the die tip rather than heating the entire extrusion chamber. This localized thermal treatment provides precise control over the molten cavity formation and material flow at the critical extrusion point, while the rest of the system remains simpler and easier to control.
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
Enables the production of pure solid targets efficiently and easily, with precise control over extrusion speed and purity, simplifying integration with other devices and eliminating the need for moving parts, while maintaining cryogenic conditions.
Implementation Method 1
a control circuit imposing on the device for applying the first and second temperatures a first adjustment to form a volume of the solid phase material inside the cell, said volume obstructing the orifice outlet, and a second adjustment to generate a temperature gradient, between the outlet orifice and the first zone so as to generate a pressure in the cell forcing the extrusion of the solid film through the outlet orifice
Implementation Method 2
generate a temperature gradient, between the outlet orifice and the first zone so as to generate a pressure in the cell forcing the extrusion
Implementation Method 3
a control circuit imposing on the device for applying the first and second temperatures a first adjustment to form a volume of the solid phase material inside the cell
Data Source
Figure 1~2
Figure 3~4
AI summary
The device (1) has a cell (2) with an input opening (3) and an output opening (4). A heat exchanger (E1) applies a temperature (T1) to the output opening, and another heat exchanger (E2) applies another temperature (T2) in a zone (6) of the cell. A control circuit controls the exchangers to impose a set of temperatures to form a volume (V1) of the material in solid phase inside the cell, and another set of temperatures to generate a temperature gradient between the output opening and the zone so as to generate a pressure in the cell forcing extrusion of the solid film via the output opening. An independent claim is also included for a method for extrusion of a solid film.