Coffee Brewing Machine Grinding Time Control for Precise Powder Amount
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Solution Overview
Problem
Conventional pressure coffee makers lack precise control over coffee powder amount and brewing pressure, leading to uneven extraction and inconsistent coffee quality due to manual tamping and arbitrary control of the compressed cylinder.
Innovation Solution
A beverage or food brewing method and machine that uses a grinding device to produce powder, with a sensor-controlled powder compressing device to ensure accurate powder amount and automated grinding time adjustments, synchronizing with water injection based on predefined ranges to optimize brewing parameters.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If manual tamping is used to form compressed coffee powder cylinder, then the operation is simple, but the powder amount and cylinder height are inaccurate leading to uneven extraction
Solution Approach 1:
The patent replaces the manual mechanical tamping system with an automated grinding and compression system. A grinding device with controlled rotation speed and time automatically grinds coffee beans and compacts the powder into a cylinder with precise height and density control, eliminating the imprecision of manual tamping while maintaining operational simplicity through automation.
Solution Approach 2:
The system performs self-service by automatically measuring, grinding, and compacting the coffee powder to a predetermined amount and height. The control unit monitors the grinding process and automatically stops when the target amount is reached, eliminating the need for manual intervention in measuring and tamping the powder.
2Device complexity
If arbitrary control of compressed cylinder is used, then the device complexity is low, but the brewing consistency and quality are poor
Solution Approach 1:
The patent implements feedback control by using sensors to detect the amount of ground powder and the height of the compressed cylinder. The control unit receives this feedback information and automatically adjusts the grinding time and compression force to maintain consistent brewing parameters, ensuring reliable and consistent coffee quality.
Solution Approach 2:
The system performs preliminary actions by pre-setting the optimal grinding time, rotation speed, and compression parameters based on the desired coffee amount and cylinder height. These parameters are determined in advance and automatically applied during each brewing cycle, ensuring consistent results without complex real-time adjustments.
3Productivity
If no prolonged grinding is performed, then the productivity is high, but the remaining powder in grinding device is wasted
Solution Approach 1:
The patent extends the grinding action continuously after the main brewing amount is ground. The grinding device continues to operate for an additional predetermined time to process the remaining coffee beans in the chamber, converting them into usable powder that is deposited into the brewing chamber, thereby eliminating waste while maintaining efficient brewing speed.
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 enables precise control of coffee powder amount and brewing pressure, reducing height deviations and improving the taste and consistency of brewed coffee by ensuring accurate powder distribution and automated water injection.
Implementation Method 1
hot water in a boiler evenly passes through a compressed coffee powder under drive of an electromagnetic pump
Implementation Method 2
a grinding device to grind coffee beans into powder
Implementation Method 3
a powder compressing device to compress the coffee powder into a compressed cylinder
Data Source
AI summary
The present disclosure relates to a beverage or food brewing method and a beverage or food brewing machine. The beverage or food brewing method includes following steps: actuating a beverage or food brewing machine to produce powder through a grinding device and to output the powder to a powder holder; when the powder in the powder holder reaches a set amount, obtaining a first grinding time value T11 of the beverage or food brewing machine; according to the first grinding time value T11, obtaining a prolonged grinding time value T12 corresponding to the first grinding time value T11; making the grinding device continue operating for a period of time determined by the prolonged grinding time value T12 and outputting the powder from the grinding device to the powder holder.