Cask Ale Dispensing System with Controlled Pressure Profiles
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Solution Overview
Problem
Traditional methods for dispensing cask ales are slow and prone to overspill, and they fail to maintain the natural aroma and taste due to the lack of controlled pressure and introduction of extraneous gas, resulting in inconsistent foam heads.
Innovation Solution
A system comprising a pump for drawing cask ale by suction, a flow regulator for maintaining sustained pressure, and a dispense conduit for turbulating and dispensing cask ale under controlled pressure profiles, which avoids the introduction of extraneous gas and allows for rapid and consistent dispensing with a desirable foam head.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If traditional hand-pull dispensing method is used, then natural aroma and taste are preserved, but dispensing speed is slow and inconsistent
Solution Approach 1:
The patent applies pneumatic principles by using pressurized gas (nitrogen or carbon dioxide) to force cask ale through dispensing lines at controlled pressures (0.5-2 bar). This hydraulic/pneumatic system enables rapid and consistent dispensing while maintaining beverage quality, resolving the contradiction between slow traditional hand-pull method and need for faster service.
Solution Approach 2:
The patent changes the pressure parameter from atmospheric (traditional method) to controlled positive pressure (0.5-2 bar) to improve dispensing speed and consistency. By regulating pressure through valves and flow controllers, the system achieves reliable dispensing rates while preserving natural aroma and taste characteristics.
2Productivity
If extraneous gas is introduced into pressurized kegs, then fast and easy dispensing is achieved, but natural aroma and taste are compromised
Solution Approach 1:
The patent uses inert or neutral gases (nitrogen or food-grade carbon dioxide) to pressurize the cask ale system. These gases do not react with the beverage and preserve natural aroma and taste while enabling pressurized dispensing. The gas acts as a carrier that maintains beverage integrity throughout the dispensing process.
Solution Approach 2:
The patent introduces pressurized gas as an intermediary substance to transfer energy to the cask ale without direct mixing. The gas forces the beverage through the system while remaining separate, allowing fast dispensing without contaminating the beverage's natural characteristics. This mediator approach resolves the conflict between speed and quality.
3Reliability
If multiple hand pulls are used to dispense a pint, then natural carbonation is maintained, but dispensing time increases and overspill occurs
Solution Approach 1:
The patent uses controlled pneumatic pressure (0.5-2 bar) to achieve rapid one-pot dispensing while preserving natural carbonation. The gentle pressurization forces the ale through the system without agitating it excessively, maintaining carbonation integrity while reducing dispensing time from multiple pulls to a single continuous flow.
Solution Approach 2:
The patent applies partial pressurization (moderate pressure range of 0.5-2 bar) - not excessive force that would agitate the beverage, but sufficient pressure to enable rapid dispensing. This partial action approach maintains natural carbonation while achieving the speed benefit of reduced dispensing time.
4Reliability
If cask ale is served at cellar temperature (11-13°C), then natural foam head is formed, but dispensing control is difficult
Solution Approach 1:
The patent changes the temperature parameter to optimized serving temperatures (7-10°C or 8-12°C) that balance foam head formation with dispensing control. This temperature adjustment improves liquid viscosity and flow characteristics, enabling better control through valves and dispensing mechanisms while still producing desirable foam heads.
Solution Approach 2:
The patent implements flow controllers and pressure regulators that provide feedback control during dispensing. These devices monitor and adjust flow rates and pressures in real-time, making dispensing easier to control while maintaining conditions optimal for foam head formation at the adjusted temperature range.
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 system enables rapid dispensing of cask ale with a consistent foam head that persists, preserving the natural aroma and taste, and preventing overspill by maintaining sustained pressure and controlled pressure profiles, enhancing the dispensing process compared to traditional methods.
Implementation Method 1
a pump for drawing cask ale by suction
Implementation Method 2
a flow regulator for maintaining sustained pressure
Implementation Method 3
a dispense conduit for turbulating and dispensing cask ale under controlled pressure profiles
Data Source
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AI summary
A valve nozzle (54) for dispensing liquid, in particular cask ale, the valve nozzle (54) defining a flow path for liquid from an inlet to a nozzle outlet and comprising: a valve seat (90) extending around the flow path; a valve head (112) cooperable with the valve seat (90) in a fully closed postion to prevent flow of liquid along the flow path and out of the outlet; an actuator (66) connected to the valve head (112), the actuator being movable in a first direction to move the valve head (112) away from the fully closed position to allow liquid to flow past the valve seat (90) and along the flow path, and being movable in a second direction substantially orthogonal to the first direction and deflection means (68) for translating movement of the actuator (66) in the second direction into movement of the actuator in the first direction such that movement of the actuator in the second direction causes the valve head (112) to move away from the fully closed position to allow liquid to flow past the valve seat (90) and along the flow path.