Liquid-Cooled Spinning Machine Traversing Element
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Solution Overview
Problem
Conventional traversing elements for spinning machines, primarily made of metal, generate heat due to friction, which can negatively impact the properties of the roving being produced.
Innovation Solution
A traversing element with a closed cavity partially filled with a liquid, such as water or ammonia, that absorbs heat generated by friction and dissipates it through evaporation and condensation, preventing heat accumulation and maintaining the roving's properties.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If conventional metal traversing elements are used, then the structure is simple and durable, but heat accumulates due to friction which negatively impacts roving properties
Solution Approach 1:
The patent utilizes phase transition of liquid (evaporation and condensation) to transfer heat away from the guide section. The liquid in the closed cavity evaporates when heated by friction, carrying heat to the condensation area where it releases heat to the environment, thus preventing heat accumulation in the roving contact area.
Solution Approach 2:
The liquid in the closed cavity serves as an intermediary heat transfer medium between the friction-generated heat source and the environment. It absorbs heat through evaporation at the hot spot and dissipates it through condensation at a remote location, mediating the heat transfer process effectively.
2Object-affected harmful factors
If liquid-filled cavities are added for heat dissipation, then heat absorption improves, but device complexity increases
Solution Approach 1:
The patent combines the heat dissipation function with the existing traversing element structure by integrating a closed cavity directly into the element body. This merging approach allows the traversing element to simultaneously perform its mechanical guiding function and thermal management function without requiring separate cooling systems.
Solution Approach 2:
The liquid-filled cavity system is designed to be self-regulating, using the natural phase change process of the liquid to automatically dissipate heat without external control mechanisms. The system serves itself by utilizing the friction-generated heat to drive the evaporation-condensation cycle, eliminating the need for external power or control systems.
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 liquid-based heat dissipation system effectively absorbs and carries away heat away from the roving, maintaining the roving's integrity and draftability, preventing negative impacts on its properties.
Implementation Method 1
heat, which is generated in the area of the guide section due to friction between the guide section and the traversing element during operation of the guide section guided roving arises from which liquid can be absorbed
Implementation Method 2
the liquid begins to evaporate. Due to the resulting local increase in pressure within the cavity, the steam flows in a direction away from the heat source
Implementation Method 3
once the liquid vapor enters an area of the cavity that is sufficiently distant from the heat source, the vapor will condense and release the desired heat into the surrounding air
Implementation Method 4
The liquid that forms as a result of the condensation finally returns to the area of the heat source (i.e. to the areas of the traversing element heated by friction with the roving) and can absorb heat there again, with the return being effected by gravity (this is referred to as a 'thermosiphon')
Implementation Method 5
or by capillary forces ('heat pipe') (both variants can be implemented within the scope of the invention)
Data Source
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AI summary
The invention relates to a changing element (1) for a spinning machine (26). The changing element (1) comprises a guide portion (2) by means of which a roving (3) can be guided in the region of a surface of a reel (4) or a roving bobbin (5), and the changing element (1) comprises a support portion (6) via which the changing element can be connected to a support (7) of a spinning machine (26). According to the invention, the changing element (1) comprises at least one cavity (8) which is closed towards the outside and which is partly filled with a liquid (9). Heat occurring in the region of the guide portion (2) due to the friction between the guide portion (2) and the roving (3) guided by the guide portion (2) during the operation of the changing element (1) can be absorbed by the liquid (9). The invention further relates to a spinning machine (26) with a corresponding changing element (2).