Beverage dispensing apparatus and method for active pressure control thereof
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Beverage dispensing machines face challenges in achieving optimal brewing pressure and temperature control, leading to potential uncontrolled bursting of drink packs and suboptimal flavor extraction, especially at high altitudes where water boiling point is lower.
Innovation Solution
A controller is used to dynamically adjust fluid pressure and temperature settings based on the selected beverage type and ambient conditions, ensuring the beverage preparation pressure remains below a set threshold and optimizing brewing conditions to prevent pack bursting and enhance flavor extraction.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a pressure release valve is provided to prevent uncontrolled bursting of drink packs, then safety is improved, but the brewing pressure is limited and flavor extraction is compromised
Solution Approach 1:
The patent applies dynamics by making the pressure release valve controllable rather than passive. The valve is integrated with a controller that actively manages pressure release timing and amount, allowing the system to dynamically adjust between safety protection and optimal brewing pressure maintenance based on real-time conditions.
Solution Approach 2:
The patent implements feedback by using a pressure sensor to monitor the actual pressure within the drink pack and feeding this information back to the controller. The controller then adjusts the valve operation based on this feedback, creating a closed-loop control system that maintains pressure within optimal brewing ranges while preventing uncontrolled bursting.
2Productivity
If high pressure packs are used to achieve stronger flavors, then flavor extraction is improved, but device complexity and manufacturing costs increase
Solution Approach 1:
The patent replaces the mechanical solution of high-pressure resistant packs with a controlled pressure management system. Instead of relying on mechanically reinforced packs that require additional support structures, the system uses an electronically controlled valve and sensor-based pressure regulation to achieve optimal extraction at lower pressures.
Solution Approach 2:
The patent applies parameter changes by dynamically adjusting pressure, temperature, and time parameters through electronic control. The controller modifies these brewing parameters in real-time based on sensor feedback, allowing optimization of flavor extraction without requiring mechanically complex high-pressure infrastructure.
3Productivity
If brewing time is extended to achieve stronger flavors at limited pressure, then flavor extraction is improved, but user acceptance decreases
Solution Approach 1:
The patent applies parameter changes by dynamically adjusting multiple brewing parameters (pressure, temperature, flow rate) in combination rather than relying on time extension. The controller coordinates these parameter changes to achieve optimal extraction efficiency, reducing the need for extended brewing times while maintaining or improving flavor quality.
Solution Approach 2:
The patent implements periodic action through pulsing or cyclic pressure application patterns controlled by the valve system. This periodic pressure variation enhances extraction efficiency during the brewing process, allowing for shorter overall brewing times while achieving superior flavor extraction compared to continuous low-pressure brewing.
4Reliability
If water temperature is lowered to prevent boiling at high altitude, then safety is improved, but brewing quality deteriorates
Solution Approach 1:
The patent applies parameter changes by compensating for altitude-induced temperature limitations through adjusted pressure parameters and extended contact time. The controller modifies the pressure profile and brewing sequence to optimize extraction at lower temperatures, maintaining brewing quality despite the safety-imposed temperature reduction at high altitudes.
Solution Approach 2:
The patent implements preliminary action by pre-heating water to the maximum safe temperature for the altitude before brewing begins, then maintaining optimal extraction through controlled pressure application and timing. This preliminary temperature optimization ensures the highest possible brewing quality within safety constraints at high altitudes.
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 allows for precise control of brewing pressure and temperature, preventing uncontrolled bursting and improving the quality of brewed beverages, while also accommodating altitude changes without compromising brewing time or flavor.
Implementation Method 1
a pressure sensor positioned to sense a pressure in the beverage preparation fluid circuit
Implementation Method 2
the controller may be configured to actively regulate the beverage preparation fluid circuit of the beverage dispensing apparatus in order to maintain a selected beverage preparation pressure, or maintain the beverage preparation pressure below a selected maximum pressure threshold
Implementation Method 3
adjusting a temperature setting of a heater, which heats fluid used for preparing beverages
Implementation Method 4
determining an estimated pressure at the water outlet based on the measured pressure and a flow rate of water through the water supply line
Data Source
AI summary
A beverage dispensing apparatus and methods for active pressure control thereof. In one aspect, a method for controlling a beverage dispensing apparatus may include: a) determining whether a first beverage to be prepared at a first temperature or a second beverage to be prepared a second temperature has been selected for preparation, the first temperature being greater than the second temperature; and b) selecting a maximum pressure threshold for a beverage preparation fluid circuit of the beverage dispensing apparatus based on whether the first beverage or the second beverage has been selected in step a), wherein the maximum pressure threshold is set by selecting from at least a first pressure threshold when the first beverage has been determined to have been selected and a second pressure threshold when the second beverage has been determined to have been selected, the first pressure being less than the second pressure.