Heated beverage system implementing matrixed valves for simultaneous control of temperature and either pressure or flow rate
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Solution Overview
Problem
Existing espresso brewing systems lack simultaneous control of output temperature and flow/pressure with precision and reliability, often relying on unreliable variable-pump systems or loud vibratory pumps.
Innovation Solution
A brewing system employing a parallel valve matrix with two proportional valves and a mix manifold to control temperature and flow properties by combining fluids at different temperatures and pressures, using sensors and a control system to adjust valve positions in real-time.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a single proportional valve is used to control temperature, pressure, or flow rate, then the device complexity is reduced, but the manufacturing precision of temperature and flow control deteriorates
Solution Approach 1:
The single valve control function is segmented into two separate proportional valves: one dedicated to temperature control and another dedicated to flow rate or pressure control. This segmentation allows each valve to specialize in one parameter, improving the precision of both temperature and flow control while maintaining manageable system complexity through modular design.
2Adaptability or versatility
If variable-pump systems are used for flow and pressure control, then the adaptability is improved, but the reliability deteriorates
Solution Approach 1:
The mechanical variable-pump system is replaced with an electronic control system using two proportional valves. This substitution eliminates the mechanical complexity and reliability issues of variable pumps while maintaining adaptability through electronic regulation of water flow and pressure, achieving both flow/pressure control capability and improved system reliability.
3Adaptability or versatility
If vibratory pumps are used for flow and temperature control, then the adaptability is improved, but the object-generated harmful factors worsen
Solution Approach 1:
The vibratory pump system is replaced with proportional valve-based flow control. This eliminates the noise generation and reliability problems associated with vibratory pumps while preserving the adaptability for flow and temperature control through precise electronic regulation of water delivery to the brewing chamber.
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 approach provides a wider range of output temperatures with greater precision and reliability, enabling precise control of temperature and flow/pressure during the brewing process.
Implementation Method 1
A mix manifold that receives and combines the first fluid from the first storage reservoir and the second fluid from the second storage reservoir to generate a fluid that is applied to a brew material
Implementation Method 2
A flow sensor measuring a value of flow of the fluid directed to the first fluid supply and the second fluid supply
Implementation Method 3
a temperature sensor measuring a value of a temperature of the fluid applied to the brew material
Implementation Method 4
and a pressure sensor measuring a value of a pressure of the fluid applied to the brew material
Data Source
AI summary
A method of controlling disbursement of a fluid to a brew material, the method includes directing a fluid toward a brew material, wherein the fluid is generated from a first fluid at a first temperature combined with a second fluid at a second temperature. Simultaneously controlling temperature and a flow property of the fluid, wherein the simultaneous controlling the temperature and the flow property is accomplished by simultaneously controlling the flow property of the first fluid and the flow property of the second fluid.