Beverage Maker Flowmeter Control for Accurate Output Quantity Metering
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Solution Overview
Problem
Existing beverage makers, such as coffee makers and soybean milk makers, suffer from inaccuracies in beverage output quantity due to variations in the filling and pressurizing stages, leading to inconsistent beverage production.
Innovation Solution
A method and device for controlling the beverage brewing process that utilizes a flowmeter to monitor rotational speed changes, determining the pressure maintenance stage, and triggers metering when the brewing unit enters this stage, ensuring accurate beverage output by stopping water supply once the target quantity is reached, without additional measurement members.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If water supply is controlled based on fixed revolutions of flowmeter, then the control process is simple, but the beverage output quantity is inaccurate
Solution Approach 1:
The system performs preliminary actions by detecting the inflection point of flowmeter rotational speed before the actual beverage output begins. This early detection allows the system to prepare for accurate metering by identifying when the brewing unit enters the pressure maintenance stage, ensuring that subsequent quantity measurement starts at the optimal moment.
Solution Approach 2:
The system continuously monitors the rotational speed of the flowmeter and uses this feedback to determine when to start metering. By analyzing the inflection point in rotational speed changes, the system adjusts its metering start timing dynamically, improving beverage output accuracy without adding complex hardware.
2Quantity of substance
If metering starts from the beginning of water supply, then the measurement covers the entire process, but the beverage output quantity deviates from target
Solution Approach 1:
The system performs preliminary detection of the inflection point in flowmeter rotational speed to determine the optimal start moment for metering. This preliminary action ensures that metering begins precisely when the brewing unit enters the pressure maintenance stage, excluding the filling and pressurizing stages from the beverage quantity measurement.
Solution Approach 2:
The brewing process is segmented into distinct stages: filling stage, pressurizing stage, and pressure maintenance stage. The system selectively meters only the beverage output during the pressure maintenance stage, separating this measurement from the other stages to improve accuracy.
3Measurement precision
If additional measurement members are added to improve accuracy, then the beverage output quantity can be measured precisely, but the device complexity increases
Solution Approach 1:
The flowmeter serves dual functions: it not only measures water flow but also provides feedback on brewing stage detection through its rotational speed characteristics. The inflection point in its rotational speed automatically indicates when the pressure maintenance stage begins, eliminating the need for separate measurement members.
Solution Approach 2:
The flowmeter is made multi-functional by using it both for water flow measurement and for detecting brewing stage transitions. By analyzing the inflection point in its rotational speed, the same component provides timing information for accurate beverage metering, reducing overall device 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 solution improves the accuracy of beverage output quantity by stabilizing pressure and using the flowmeter to determine the optimal timing for stopping water supply, thereby reducing deviations and enhancing precision in beverage production.
Implementation Method 1
obtaining state change information of the flowmeter, where the state change information is configured to indicate a rotational speed change trend of the flowmeter
Implementation Method 2
A brewing unit of the beverage maker includes a pressurizing member for generating pressure in the brewing unit in the beverage brewing process
Data Source
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AI summary
Disclosed in the present disclosure are a beverage maker, and a method and device for controlling a beverage brewing process, which belong to the field of small household appliances. A brewing unit of the beverage maker includes a pressurizing member for generating pressure in the brewing unit in the beverage brewing process, and a pipe supplying water to the brewing unit is provided with a flowmeter. The method includes: supplying water to the brewing unit in response to a start signal of current beverage brewing, and obtaining state change information of the flowmeter, where the state change information is configured to indicate a rotational speed change trend of the flowmeter in a current beverage brewing process; triggering a start of metering a beverage output quantity of the current beverage brewing when it is determined that the brewing unit enters a pressure maintenance stage according to the state change information; and stopping supplying water to the brewing unit when the beverage output quantity metered reaches a target beverage quantity. The present disclosure solves a technical problem of inaccuracy in the beverage output quantity.