Barrel Switching Device Bypass for Foam-Free Beverage Dispensing
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Solution Overview
Problem
Existing systems for dispensing carbonated beverages face challenges with foam and gas accumulation during barrel switching, leading to dead spaces, measurement errors, and inefficiencies in cleaning, particularly due to the difficulty in separating liquid from foam and gas in the pipe system.
Innovation Solution
A barrel switching device with a bypass connection between the inflow and outflow lines, arranged below the foam outlet, ensures that foam and gas are removed, allowing for liquid to fill the drain line, and utilizing a single foam sensor at the highest point to confirm the absence of foam, along with matching line cross-sections and valves for efficient cleaning and flow management.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-generated harmful factors
If foam outlet is used to separate liquid from foam during barrel switching, then foam can be removed from the system, but dead spaces are created in the pipe system that are difficult to clean and retain residual gas or foam
Solution Approach 1:
The patent extracts the foam outlet function from the main liquid flow path by introducing a separate bypass line. The bypass connects the inflow line upstream of the foam outlet to the outflow line downstream, creating a parallel path that allows liquid to flow through while foam is diverted and removed through the foam outlet, eliminating dead spaces in the main path
Solution Approach 2:
The bypass acts as an intermediary element that mediates between the inflow and outflow lines. It provides a separate pathway that allows liquid to bypass the foam outlet area, preventing foam and gas accumulation in dead spaces while maintaining continuous liquid flow through the system
2Measurement precision
If multiple foam sensors are used to detect foam in the system, then foam detection accuracy improves, but device complexity and cost increase
Solution Approach 1:
The patent merges the foam detection function into a single strategic location by placing one foam sensor in the bypass line. This single sensor position allows detection of foam that would otherwise accumulate in dead spaces, and the bypass design ensures that foam detected at this point represents foam that would otherwise contaminate the liquid flow, providing sufficient detection accuracy without requiring multiple sensors throughout the system
3Productivity
If line cross-sections are varied to optimize flow, then flow efficiency improves, but cleaning uniformity deteriorates due to different flow conditions in different line sizes
Solution Approach 1:
The patent applies homogeneity by designing the bypass line with the same cross-sectional dimensions as the inflow and outflow lines. This uniform cross-section ensures consistent flow velocity and pressure characteristics throughout the bypass, creating uniform flow conditions that facilitate effective cleaning throughout the entire system while maintaining adequate flow efficiency
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 solution prevents foam and gas from reaching the tap, reduces dead spaces, and facilitates uniform flow and cleaning, ensuring accurate measurements and efficient operation by ensuring the lines remain free of foam and gas during barrel switching.
Implementation Method 1
The bypass makes it possible to press both the inflow line and the outflow line free with liquid while the foam and gas are being removed
Implementation Method 2
The provision of an ultrasonic sensor at the highest point ensures that all of the foam in the inflow line and the outflow line collects there
Implementation Method 3
When the liquid and foam are separated, the foam usually moves upwards, as it has a lower density than the liquid
Data Source
Figure 1~3
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Figure 7~11
AI summary
A keg switching device (1) for dispensing carbonated beverages has an inlet line (2) for connection to a keg (3) and an outlet line (4) for connection to a tap (40). A foam outlet (8) is provided between the inlet line (2) and the outlet line (4) to prevent foam from entering the outlet line (4) from the inlet line (2). A bypass (9) between the inlet line (2) and the outlet line (4) ensures that the outlet line (4) can also be flushed without foam and that no residual foam remains in the outlet line (4). The device can be constructed exclusively from lines and valves to ensure safe cleaning with a foam ball.