Coffee Maker Mode Switching With Drip Pan Detection
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Solution Overview
Problem
Coffee makers lack a seamless mechanism to switch between single serving and multiple serving operations efficiently, often requiring manual adjustments and lacking user-friendly interfaces for selecting serving sizes and modes.
Innovation Solution
A coffee maker design incorporating a base with a heating plate, a filter basket, a drip pan sensor, and an electronic controller that communicates with sensors to detect the drip pan or removable single-serve adaptor, prompting user input for serving sizes and automatically adjusting the brewing process accordingly, with a drip stop assembly to regulate fluid flow.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a coffee maker includes both single serving and multiple serving operations, then the adaptability of the device is improved, but the device complexity increases due to multiple components and control mechanisms
Solution Approach 1:
The coffee maker is designed with a universal base that can accommodate both carafes for multiple serving and single serve cups for individual portions. The electronic controller provides a unified interface that automatically detects the brewing mode and adjusts parameters accordingly, allowing one device to perform multiple functions without requiring separate machines.
Solution Approach 2:
The system incorporates sensors that automatically detect whether a carafe or single serve cup is present on the brewing chamber. This self-detection capability allows the electronic controller to automatically configure the brewing parameters, eliminating the need for manual mode selection and reducing the complexity of user interaction while maintaining high adaptability.
2Ease of operation
If manual adjustments are required for serving size selection, then the device complexity is reduced, but the ease of operation deteriorates due to cumbersome user input requirements
Solution Approach 1:
The electronic controller incorporates sensors that automatically detect the presence and type of brewing vessel (carafe or single serve cup). Based on this detection, the system automatically configures the brewing parameters including water flow rate, brewing time, and temperature. This self-configuration capability eliminates the need for manual serving size selection, providing a simple one-button operation while maintaining sophisticated control functionality.
Solution Approach 2:
The system uses sensors to provide feedback about the brewing setup to the electronic controller. The controller processes this feedback and automatically adjusts the brewing parameters to match the detected configuration. This closed-loop feedback mechanism enables intuitive operation where the device adapts to the user's setup without requiring explicit input, thereby improving ease of operation without significantly increasing control complexity.
3Use of energy by moving object
If the heating plate remains active when a drip pan is positioned, then the energy efficiency is improved by continuous heating readiness, but harmful factors increase due to potential overheating and energy waste
Solution Approach 1:
The electronic controller continuously monitors the position of the drip pan through sensors. When the drip pan is detected as being in place, the controller automatically deactivates the heating plate to prevent overheating and energy waste. When the drip pan is removed and a carafe or single serve cup is detected, the heating plate is activated. This feedback-based control ensures optimal energy efficiency while eliminating overheating risks associated with continuous heating operation.
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
Enables efficient switching between single serving and multiple serving modes with user-friendly interface options, ensuring accurate brewing based on user selections and preventing overheating when a drip pan is present.
Implementation Method 1
a sensor operable to detect the drip pan when the drip pan is positioned on the base and generate an electrical output signal indicative thereof, and in some embodiments, the sensor may be a magnetic sensor
Implementation Method 2
a base, a heating plate located in the base
Data Source
AI summary
A coffee maker and method of operating the same is disclosed. The method includes deactivating a heating plate of the coffee maker when a drip pan is positioned thereon, soliciting a user-selection of a serving size from a plurality of serving sizes when the drip pan is positioned on the base, and operating a pump of the coffee maker to advance fluid to a filter basket in accordance with the selected serving size.