Coffee machine
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Solution Overview
Problem
Large coffee machines are cumbersome and difficult to maintain, while small ones often have complex structures and inconsistent coffee quality due to their reliance on complex components like heat exchangers and electromagnetic valves.
Innovation Solution
A compact coffee machine design featuring an automatic drain mechanism that controls the outflow of heated water based on ambient temperature, an automatic exhaust mechanism for steam, and a nozzle mechanism for controlling coffee extraction pressure, simplifying the brewing process and ensuring consistent coffee quality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If complex components like heat exchanger and electromagnetic valve are used to control outflow of heated water, then the coffee machine can control water flow, but the structure becomes complex and size increases
Solution Approach 1:
The patent employs temperature-responsive materials (thermochromic materials or shape memory alloys) that automatically change properties in response to temperature changes, enabling the valve to open or close without external control systems. This self-service mechanism eliminates the need for electromagnetic valves and complex control circuits while maintaining automatic water flow control based on temperature conditions.
Solution Approach 2:
The patent replaces complex mechanical control systems (electromagnetic valves, heat exchangers, sensors, and control circuits) with a simple temperature-responsive material-based valve. The material's inherent physical property changes with temperature, directly controlling water flow without requiring mechanical actuators or electronic control systems.
2Ease of operation
If heat exchanger and electromagnetic valve are used for controlling water outflow, then water flow control is achieved, but the coffee machine size increases
Solution Approach 1:
The patent extracts and eliminates unnecessary components (heat exchanger, electromagnetic valve, control circuits) from the system, retaining only the essential temperature-responsive valve made from smart materials. This extraction of redundant elements significantly reduces the overall device volume while preserving the core water flow control function.
Solution Approach 2:
The patent substitutes bulky mechanical control systems with a compact temperature-responsive material-based valve. The smart material's direct response to temperature changes eliminates the need for large electromagnetic valves and heat exchangers, resulting in a much more compact coffee machine design.
3Ease of operation
If complex elements are used for controlling water outflow, then precise control is achieved, but maintenance difficulty increases
Solution Approach 1:
The temperature-responsive valve requires no external power supply, control signals, or calibration. It automatically responds to temperature changes through the intrinsic properties of the smart material, eliminating the need for maintenance of electromagnetic coils, control circuits, or sensors. The valve simply opens or closes based on temperature conditions without requiring human intervention or repair.
Solution Approach 2:
The patent replaces complex mechanical and electronic control systems with a passive temperature-responsive material valve. This substitution eliminates numerous maintenance-prone components such as electromagnetic valves, control circuits, sensors, and power supplies, resulting in a highly maintenance-free system with no moving parts to wear or fail.
4Device complexity
If merely boiling water and brewing ground coffee is done, then the coffee machine structure is simple, but coffee quality consistency is poor
Solution Approach 1:
The temperature-responsive valve provides automatic feedback control of water flow based on temperature conditions. As the water temperature changes during brewing, the valve automatically adjusts its opening state to maintain optimal flow rates, ensuring consistent extraction conditions and thereby improving coffee quality consistency without adding complex control systems.
Solution Approach 2:
The patent utilizes the temperature-dependent parameter changes of smart materials to dynamically control water flow characteristics. The valve's opening degree automatically changes with temperature, providing adaptive flow control that maintains optimal brewing conditions throughout the brewing process, thereby improving coffee quality consistency through simple physical parameter changes rather than complex control mechanisms.
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 solution results in a user-friendly, compact coffee machine that automatically controls fluid and steam outflow, facilitating high-quality coffee production with reduced size and complexity, enhancing convenience, safety, and manufacturing efficiency.
Implementation Method 1
The sheet of drain valve is limited by the lid of drain valve and is capable of deformation that allows the status of the water outlet to be changed from blocking the water outlet to opening the water outlet when the ambient temperature at the water outlet is equal to or greater than a first temperature
Implementation Method 2
The automatic exhaust sheet is limited by the lid of exhaust sheet and is capable of deformation that allows the status of the steam outlet to be changed from blocking the steam outlet to opening the steam outlet when the ambient temperature at the steam outlet is equal to or greater than a second temperature
Implementation Method 3
a heating mechanism for heating the pot liner
Data Source
AI summary
A coffee machine includes a pot liner and a heating mechanism for heating the pot liner. The pot liner has a water inlet and a water outlet. An automatic drain mechanism is provided at the water outlet of the pot liner for opening or blocking the water outlet according to the ambient temperature at the water outlet. The automatic drain mechanism can be used to control outflow of the heated water from the pot liner according to the ambient temperature, so that the structure for exhausting water is simplified and the size of the coffee machine is reduced. Moreover, the fluid flowing out under the pressure generated due to steam will facilitate to brew ground coffee, thereby enhancing the quality of coffee.