Coffee Machine Top-Mounted Heating for Temperature Consistency
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Solution Overview
Problem
Conventional drip type coffee machines suffer from temperature fluctuations and uneven water distribution, resulting in poorly extracted, less flavorful coffee, especially in the first few cups, due to intermittent hot water flow and uncontrollable cold water heating.
Innovation Solution
The machine positions the water tank and heating system on top to minimize energy loss, using a pour-over system for even water distribution and a valve system with a temperature sensor to maintain optimal water temperature between 92°C to 96°C, ensuring consistent brewing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of energy
If hot water is pumped from bottom to top through pipes and tubes, then the heating system can be positioned at the bottom, but significant energy loss occurs during the process
Solution Approach 1:
The patent inverts the conventional heating system arrangement by positioning the heating system at the top instead of the bottom, allowing hot water to flow downward through gravity into the brewing chamber, thereby minimizing energy loss and eliminating the need for complex piping systems to pump water upward
2Ease of operation
If a piston valve opens the flow path between cold water chamber and hot water chamber, then cold water can be supplied to the heating system, but the temperature of the first few cups becomes too low
Solution Approach 1:
The system performs preliminary heating of water in the hot water chamber before brewing begins. The piston valve initially connects the cold and hot water chambers to allow pre-heating, and only after the target temperature is reached does it close this connection and open the flow path to the brewing chamber, ensuring optimal temperature from the first cup
3Device complexity
If hot water flows intermittently through the coffee grounds, then the brewing process can be simplified, but the water distribution on coffee grounds becomes uneven
Solution Approach 1:
The patent employs a pour-over system with multiple dispensing points that distribute hot water locally across different areas of the coffee grounds simultaneously, ensuring uniform water distribution and even extraction while maintaining a relatively simple brewing process
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 design achieves optimal coffee temperature consistency, reducing energy loss and brewing time variability, resulting in better-tasting coffee with improved flavor and aroma, compliant with industry standards for coffee brewing temperatures.
Implementation Method 1
the water inside the hot water chamber would be heated up
Implementation Method 2
the temperature sensor detects a drop to certain pre-determined temperature
Implementation Method 3
the piston valve would be pushed upward. As a result, the flow path between the cold water chamber and the hot water chamber would be closed, whereas the flow path between the hot water chamber and filter basket would be opened to dispense the hot water into the underlying filter basket by gravity
Data Source
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AI summary
The present invention provides a beverage machine that heats up water in the upper water chamber(s). The water has direct contact with an electric heating system and the heated water flows by gravity and being distributed by a pour over system into an underlying filter basket. The hot water chamber comprises a sensor for water temperature. Once the water reaches an optimal temperature, a motor and gear system would drive a valve open and allow the heated water to flow into the underlying filter basket. The present invention allows certain amount of water to be heated up in individual batch, thereby making it easy to manage water temperature in every batch.