Linear Motor Return Gas Pipe Positioning in Beverage Filling Valves
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Solution Overview
Problem
Existing filling devices face challenges in precisely and efficiently adjusting the return gas pipe for different container types without mechanical feedthroughs, leading to high mechanical losses, hygiene issues, and complex sealing problems, especially when transitioning between rinsing and filling processes.
Innovation Solution
Integration of a low-loss electromagnetic linear motor that allows precise and reproducible adjustment of the return gas pipe, eliminating the need for mechanical feedthroughs and enabling easy cleaning, with a pressure-resistant design and stainless steel components for media compatibility.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If an electromagnetic linear motor is used to adjust the return gas pipe, then positioning precision and energy efficiency are improved, but the device complexity increases due to integration requirements
Solution Approach 1:
The patent combines the electromagnetic linear motor, the return gas pipe adjustment mechanism, and the pressure-resistant chamber into a single integrated assembly. The motor is mounted directly on the valve housing and drives the return gas pipe through a direct coupling, eliminating the need for separate mechanical feedthroughs and reducing overall system complexity despite the advanced actuation technology.
Solution Approach 2:
The electromagnetic linear motor serves multiple functions: it positions the return gas pipe with high precision, maintains pressure resistance, and enables easy cleaning. The integrated design allows the motor assembly to fulfill both actuation and structural roles, reducing the number of separate components needed in the system.
2Device complexity
If mechanical feedthroughs are used for adjustment, then device complexity is reduced, but mechanical losses and hygiene issues increase
Solution Approach 1:
The patent replaces traditional mechanical feedthroughs and threaded connections with an electromagnetic linear motor that acts directly on the return gas pipe. This substitution eliminates mechanical friction and wear associated with threaded adjustments, reducing mechanical losses while maintaining ease of adjustment through electromagnetic actuation.
3Device complexity
If mechanical adjustments with seals are used, then device complexity is reduced, but cleaning difficulty and leakage risk increase
Solution Approach 1:
The patent extracts the return gas pipe and motor assembly from the pressure-tight chamber in a way that allows the pipe to be moved freely without penetrating seals. The motor is mounted on the chamber exterior and couples to the pipe through a magnetic field that passes through the chamber wall, eliminating the need for sealed mechanical feedthroughs and enabling easy cleaning of the chamber interior.
Solution Approach 2:
The chamber wall acts as an intermediary that transmits the electromagnetic force from the motor to the return gas pipe without requiring direct mechanical contact through seals. The magnetic field penetrates the non-magnetic chamber wall to drive the pipe, eliminating leakage risks while maintaining pressure containment.
4Reliability
If electromagnetic adjustment through a wall is used, then sealing problems are eliminated, but magnetic force transmission losses increase
Solution Approach 1:
The patent employs a pressure-resistant chamber design where the chamber wall is optimized for magnetic field penetration. By selecting appropriate wall materials and thicknesses that are non-magnetic or low-reluctance, the system minimizes magnetic force transmission losses while maintaining pressure containment and sealing reliability.
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 linear motor achieves precise positioning with minimal losses, ensures easy cleaning, and enhances flushing efficiency by allowing the return gas pipe to be adjusted and fixed accurately, improving the overall operational efficiency and hygiene of the filling device.
Implementation Method 1
An electromagnetic linear motor works with low losses and enables the precise and reproducible adjustment of the return gas pipe
Implementation Method 2
A permanent magnet ring is located on the ring, which cooperates electromagnetically through the wall of the valve housing with a stator arranged stationary on the outside
Data Source
Figure 1~2
AI summary
The invention relates to a filling device (F) for beverage bottles, having a filling valve (V) by way of which various media, including a product to be bottled, may be supplied and/or removed, and a return gas tube (R) that is displaceable in a linear fashion relative to the filling valve by means of an electromagnetic positioning drive (P). The positioning drive is a linear motor (L) having a stationary stator housing (9) and an armature (14) coupled to the return gas tube (R).