Pinch-Sleeve Beverage Valve for Precise Tea Mixing Control
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Solution Overview
Problem
Conventional tea dispensers either provide tea made from a concentrate and diluent or fresh brewed tea, but they lack the ability to efficiently control the flow of both hot water and concentrate for optimal flavor and strength, and they do not offer a single device capable of dispensing both fresh brewed and concentrate tea options.
Innovation Solution
A multi-station beverage dispensing machine with flow control circuits that include a hot water circuit and a makeup water/concentrate circuit, where pressurized hot water and concentrate are directed to intersect within the urn, allowing for precise control of tea strength and flavor, and a beverage dispensing valve with a downspout assembly and flexible sleeve to manage fluid flow.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a single dispenser is used for both fresh brewed and concentrate tea, then versatility is improved, but device complexity increases
Solution Approach 1:
The beverage dispensing valve is designed to handle multiple beverage types (fresh brewed tea and concentrate tea) through a single device. The valve body includes multiple inlet ports that can receive different beverage sources, and the internal passage structure allows selective routing of different beverages through the same dispensing mechanism, enabling one device to perform multiple functions.
Solution Approach 2:
The valve internal structure is segmented into separate passageways and control mechanisms for different beverage types. The valve includes distinct inlet ports, separate flow control elements, and independently operable components that allow each beverage type to be controlled separately while sharing the common dispensing outlet and valve body structure.
2Manufacturing precision
If flow control circuits are added to meter hot water and concentrate, then manufacturing precision is improved, but device complexity increases
Solution Approach 1:
The flow control circuits for hot water and concentrate are merged into a single integrated valve assembly. The valve body houses multiple inlet ports, separate flow control elements, and passageways that work together as one unified device. This consolidation allows precise flow metering for multiple beverages while avoiding the complexity of separate standalone control systems.
Solution Approach 2:
The valve serves as an intermediary device that receives multiple beverage sources (hot water, concentrate) through separate inlet ports and provides controlled flow to the dispensing system. The internal passage structure and flow control elements act as mediators that precisely regulate the mixing ratio and flow rate of different beverages before they are combined and dispensed.
3Ease of operation
If the pinch member moves through the slot to control flow, then ease of operation is improved, but reliability may worsen due to potential misalignment
Solution Approach 1:
The valve incorporates a flexible elastomeric sleeve or insert that lines the internal passage. This flexible component can deform to seal against the slot walls when the pinch member moves into position, ensuring reliable flow control. The flexibility compensates for any minor misalignments between the pinch member and slot, maintaining both ease of operation and flow control reliability.
Solution Approach 2:
The valve design allows the elastomeric component to change its physical parameters (shape, volume) in response to the pinch member's movement. When the pinch member enters the slot, the elastomeric material deforms to conform to the slot geometry, creating an effective seal. This parameter change enables reliable flow control through a simple mechanical movement of the pinch member.
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
Enables the precise metering and mixing of hot water and concentrate to achieve optimal tea strength and flavor, allowing users to choose between fresh brewed and concentrate tea, with the valve ensuring controlled fluid flow for consistent beverage dispensing.
Implementation Method 1
A coil spring may be provided for engaging the lateral member and the pinch arm urging the pinch arm at least partially through the slot of the body
Implementation Method 2
A pliable, flexible silicon-based, elastomer sleeve or insert or other suitable member may be dimensioned to tightly fit against the walls of the channel of the body
Implementation Method 3
fluid may be allowed to flow under the impetus of gravity between the upper opening of the insert and the lower opening of the insert
Data Source
AI summary
A beverage dispensing valve may include a downspout assembly having a body having walls with a slot therein, a channel, an upper and a lower opening, with the slot in the channel between the upper and lower openings. The downspout assembly may include a lateral member extending laterally from the downspout assembly and engaging the wall adjacent the slot. A pinch member may be partly enclosed within the lateral member and dimensioned to move partially through the slot. A pinch handle and the pinch member may move the pinch member in and out of the slot. A coil spring may engage the lateral member and the pinch arm urging the pinch arm at least partially through the slot of the body. A flexible insert may be dimensioned to tightly fit against the walls of the channel of the body, the insert having an open top and an open bottom.