Brewing Chamber Hydraulic Circuit for Independent Pressure Control
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Solution Overview
Problem
Existing beverage producing machines with hydraulic mechanisms for opening and closing the brewing chamber face limitations in selectable pressure, which affects the organoleptic characteristics of the beverage, as the extraction pressure is determined by the closure pressure and lacks flexibility in brewing pressure settings.
Innovation Solution
A beverage producing machine with a hydraulic circuit that allows independent control of brewing pressure from closure pressure, utilizing a first valve arrangement to isolate the hydraulic actuator during closure and a second valve arrangement to deliver pressurized water through the brewing chamber, enabling adjustable brewing pressure and flexible operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a hydraulic mechanism is used to close the brewing chamber, then the brewing chamber can be reliably sealed, but the brewing pressure becomes fixed and cannot be independently adjusted
Solution Approach 1:
The hydraulic circuit is segmented into two independent pathways: one for chamber closure and one for brewing water delivery. This allows the closure pressure and brewing pressure to be independently controlled, resolving the contradiction between reliable sealing and pressure adjustability.
Solution Approach 2:
A valve arrangement acts as an intermediary between the hydraulic actuator and the brewing chamber, enabling independent control of brewing pressure while maintaining the closure pressure required for reliable sealing.
2Device complexity
If the same pump delivers water to both the brewing chamber and hydraulic actuator, then the system is simplified, but the brewing pressure is determined by the closure pressure
Solution Approach 1:
The water delivery system is segmented into separate pathways with independent valve control, allowing the brewing pressure to be independently adjusted without changing the closure pressure, thus maintaining simplicity while adding versatility.
Solution Approach 2:
The valve arrangements enable dynamic control of water flow pathways, allowing the system to switch between different pressure settings and operational modes, providing brewing pressure adaptability without increasing overall system complexity.
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 machine operates safely and reliably at variable brewing pressure values, offering enhanced flexibility and user options by allowing brewing pressure to be set lower than the closure pressure, thereby improving the quality and variability of the beverage extraction process.
Implementation Method 1
at least one hydraulic actuator for controlling closing and opening movements of the brewing chamber; A water pump is further provided, which is fluidly connected to the brewing chamber through a first water path and further fluidly connected to the hydraulic actuator through a second water path
Implementation Method 2
A water pump is fluidly connected to the brewing chamber through a first water path for delivering pressurized water selectively to the brewing chamber
Implementation Method 3
A water heater is arranged along the first water path, for heating brewing water delivered to the brewing chamber
Data Source
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AI summary
The beverage producing machine (1) comprises a brewing chamber (3) and at least one hydraulic actuator (5) for controlling closing and opening movement of the brewing chamber (3). A water pump (15), fluidly connected to the brewing chamber (3) through a first water path (19) and further fluidly connected to the hydraulic actuator (5) through a second water path (31) delivers pressurized water to the brewing chamber (3) and to the hydraulic actuator (5), respectively. A water heater (21) and a first valve arrangement (20) are further arranged along the first water path (19). A second valve arrangement (32) is positioned along the second water path (31), between the water pump (15) and the hydraulic actuator (5). The first valve arrangement (20) and the second valve arrangement (32) are configured and controlled such that during a brewing chamber closure step the first valve arrangement (20) is closed, and the second valve arrangement (32) is open. Upon reaching a closure pressure in the hydraulic actuator (5), the second valve arrangement (32) is closed and the first valve arrangement (20) is opened, allowing water to be delivered to the brewing chamber (3).