Rotor Spinning Device Cooling via Integrated Pneumatic Line
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Solution Overview
Problem
High-speed open-end rotor spinning devices with single-motor-driven, magnetically mounted spinning rotors face challenges in heat dissipation, leading to potential damage from heat pockets, which existing cooling devices are ineffective in addressing, especially at high speeds.
Innovation Solution
Integrating the pneumatic line between the rotor housing and vacuum source into the drive housing of the spinning rotor, where the spinning vacuum creates a suction air flow that dissipates heat generated by the electromotive drive, ensuring reliable cooling and preventing overheating.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the spinning rotor is driven by a single motor at high speeds, then productivity is improved, but heat dissipation becomes problematic leading to hot spots
Solution Approach 1:
The pneumatic line is integrated into the drive housing, merging the vacuum function and cooling function into a single structural component. The housing serves dual purposes: providing structural support for the motor and acting as a heat dissipation channel through the integrated pneumatic line
Solution Approach 2:
The pneumatic line performs multiple functions simultaneously: maintaining vacuum in the rotor housing for fiber feeding and cooling the motor by carrying away heat through suction airflow. This multi-functional design eliminates the need for separate cooling systems
2Temperature
If separate cooling devices are added to dissipate heat, then temperature control is improved, but device complexity increases
Solution Approach 1:
The cooling function is merged with the existing pneumatic line structure. Instead of adding a separate cooling device, the patent utilizes the vacuum pneumatic line already present in the system to simultaneously perform cooling, thereby avoiding increased device complexity
Solution Approach 2:
The pneumatic line is designed to serve multiple purposes: vacuum maintenance for fiber feeding and heat dissipation for motor cooling. This universal application of the existing component eliminates the need for additional cooling system complexity
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 maintains optimal operating temperatures and prevents thermal stress on electronic assemblies, ensuring reliable operation and protection from overheating, even under unfavorable conditions, while being a cost-effective and simple solution.
Implementation Method 1
the spinning vacuum initiated by the vacuum source cools the individual drive of the spinning rotor via a suction air flow present in the pneumatic line
Implementation Method 2
whose rotor shaft is magnetically mounted both axially and radially in a contactless manner in a magnetic bearing arrangement
Data Source
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AI summary
The invention relates to an open-end rotor spinning device (3) with a spinning rotor (19) driven by a single motor, the rotor cup (17) of which rotates in a rotor housing (10) which is closed during the spinning process by the cover element (22) and connected to a vacuum source (23) via a pneumatic line (29). According to the invention, at least one pneumatic line (29) arranged between the rotor housing (10) and the vacuum source (23) is positioned in the area of the individual electric motor drive (21) of the spinning rotor (19) such that the spinning vacuum initiated by the vacuum source (23) provides for cooling of the individual drive (21) of the spinning rotor (19) via a suction airflow present in the pneumatic line (29).