Gas Lock Turbulent Flow Sealing for Coating Systems
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Solution Overview
Problem
Conventional gas separation methods in continuous coating systems face challenges such as gas mixing, safety risks from toxic and explosive gases, inability to detect leaks without pressure measurement, spatial inefficiency, wear and tear, and low system uptime due to mechanical contact and non-directional gas showers.
Innovation Solution
A gas lock design with an inflow body, a wall forming a gap, and means to generate turbulent flow within the gap, preventing backflow and ensuring efficient separation of gas chambers without mechanical contact, allowing for continuous operation and safety control.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional sealing concepts with mechanical seals are used to separate gas chambers, then gas separation reliability is improved, but mechanical wear and tear occurs and continuous operation is compromised
Solution Approach 1:
The patent replaces mechanical sealing systems with a gas dynamic sealing concept. A controlled gas flow through a narrow gap creates a pressure distribution that prevents gas mixing without mechanical contact. The gas flow acts as a seal, eliminating wear and enabling continuous operation while maintaining separation reliability.
Solution Approach 2:
The invention uses pneumatic principles by introducing a sealing gas flow through a controlled gap between the inflow body and wall. The gas flow creates a hydrodynamic barrier that prevents mixing of process gases, replacing mechanical seals with a fluid-based sealing mechanism that operates continuously without wear.
2Duration of action of stationary object
If gas showers are used for gas separation, then continuous operation is maintained, but the separation is non-directional and insufficient for high-purity processes
Solution Approach 1:
The patent creates a localized controlled flow environment in the narrow gap between the inflow body and wall. The gas flow is directed specifically through this confined space, creating a unidirectional seal that provides both continuous operation and high-purity separation. The local flow control eliminates the non-directional nature of conventional gas showers.
3Reliability
If mechanical seals are used to separate gas chambers, then gas mixing is prevented, but spatial complexity increases and cost rises
Solution Approach 1:
The invention uses a thin gap between the inflow body and wall as the sealing element, replacing bulky mechanical seal assemblies. This narrow space, through which controlled gas flow passes, provides effective separation with minimal spatial requirements and reduced system complexity.
4Difficulty of detecting and measuring
If pressure measurement is used to detect sealing failures, then leak detection capability is improved, but system complexity and cost increase due to explosion-proof requirements
Solution Approach 1:
The patent introduces a sealing gas as an intermediary substance that flows through the gap and prevents process gas leakage. By monitoring the flow characteristics or composition of this intermediary gas, sealing effectiveness can be detected without directly measuring pressure in potentially explosive process gases, avoiding explosion-proof requirements.
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 gas lock effectively separates gas chambers, minimizing spatial complexity, ensuring continuous system operation, safety, and reducing costs by preventing gas mixing and leaks, while maintaining high-purity processes.
Implementation Method 1
means to generate turbulent flow within the gap
Data Source
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AI summary
The invention relates to a gas lock for separating two gas chambers, said gas lock allowing gases to be separated using minimal space and without contacting the product/feedstock/transport system. The gas lock of the invention is characterized in that at least one flow manipulation means is provided in a duct of the gas lock. The invention also relates to a coating apparatus comprising a gas lock of the invention. Furthermore, possible uses of the disclosed gas lock are indicated.