Coffee maker with multi and single cup modes
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional coffee makers fail to extract the full flavor from bulk ground coffee due to loosely packed grounds, and existing solutions either require pre-packaged coffee pods or are limited to single or multi-cup brewing, lacking versatility.
Innovation Solution
A multi-mode coffee maker that allows switching between carafe and single-cup modes, featuring a drip valve that can be opened by inserting either a carafe or single-cup adapter, and a hot plate with independent temperature control, enabling efficient tamping of coffee grounds for richer flavor extraction.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If pre-packaged coffee pods are used, then flavor extraction is improved, but device complexity and ease of operation worsen due to requiring pod holders and tampering mechanisms
Solution Approach 1:
The invention extracts the tamping function from a separate pod holder mechanism and integrates it directly into the brewing chamber. The tamper is positioned to work directly on coffee grounds in the filter basket, eliminating the need for complex pod holder structures while maintaining effective compression for flavor extraction.
Solution Approach 2:
The invention introduces a simple lever-operated tamper as an intermediary mechanism between the user and the coffee grounds. This mediator provides the necessary compression force through a straightforward mechanical action, avoiding the complexity of automated or multi-component pod holding systems.
2Adaptability or versatility
If a single coffee maker is used for both multi-cup and single-cup brewing, then adaptability is improved, but device complexity worsens
Solution Approach 1:
The brewing chamber is designed with universal dimensions and features that accommodate both carafe-style multi-cup brewing and single-cup brewing. The same chamber, filter basket, and tamping mechanism work for both modes, eliminating the need for separate brewing systems or complex switching mechanisms.
Solution Approach 2:
The invention employs a movable carafe rest and adjustable components that can be repositioned based on the brewing mode. The carafe rest can be moved to accommodate different carafe sizes for multi-cup brewing, while the same space can accommodate single-cup mugs, providing dynamic adaptability without adding complex control systems.
3Ease of operation
If loose ground coffee is used, then ease of operation is improved, but flavor extraction worsens due to loosely packed grounds
Solution Approach 1:
The invention performs preliminary tamping action through a lever mechanism that compresses the loose coffee grounds before brewing begins. This preliminary compression ensures proper packing density for optimal flavor extraction, while the user still enjoys the ease of simply pouring loose grounds into the filter basket without manual tamping effort.
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 flexible brewing options, ensuring optimal flavor extraction and convenience by allowing both bulk and single-cup brewing with efficient tamping mechanisms, accommodating various coffee holder designs and materials.
Implementation Method 1
The compacting may be by a spring or by a resilient solid material
Implementation Method 2
providing a stream of hot water through the loosely packed ground coffee
Implementation Method 3
Coffee makers include a reservoir, a pump, a heater, and a check valve
Data Source
AI summary
A multi-mode coffee maker facilitates switching between a carafe mode and a single cup mode. The coffee maker includes switches for selecting the amount of coffee brewed, a drip valve normally closed to prevent dripping and opened by insertion of a carafe or a single cup adapter into the coffee maker, and a hot plate for maintaining the temperature of coffee in the carafe, the hot plate independent switchable on and off. An upper edge of the carafe, and an arm reaching from the single cup adapter, engage a lever opening the drip valve. The hot plate may be manually turned on and off, or the single cup adapter may cooperate with a switch in the coffee maker to turn the hot plate off.