Coffee maker
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Large coffee machines are cumbersome and difficult to maintain, while small ones often lack consistency in coffee quality due to complex structures and limited functionality.
Innovation Solution
A compact coffee machine design featuring an automatic drain mechanism and steam exhaust mechanism controlled by ambient temperature, a nozzle mechanism for controlling coffee outflow based on pressure, and a simplified water inflow system, enhancing ease of use and quality consistency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If complex elements such as heat exchanger, electromagnetic valve are used for controlling outflow of heated water, then the coffee machine can control water flow precisely, but the machine size becomes large and structure becomes complex
Solution Approach 1:
The patent replaces complex electromagnetic valves and heat exchangers with a bimetallic strip-based automatic drain mechanism. The bimetallic strip responds directly to temperature changes through thermal expansion differential, mechanically opening or closing the drain valve without requiring electronic control systems or complex mechanical assemblies.
Solution Approach 2:
The automatic drain mechanism uses the bimetallic strip to sense temperature changes and automatically control the drain valve opening and closing based on water temperature. The system serves itself by using the thermal properties of the bimetallic strip to regulate water flow without external control, eliminating the need for complex control circuits or additional sensing mechanisms.
2Reliability
If automatic temperature-controlled mechanisms are used for drain and exhaust control, then the coffee quality consistency is improved, but the device complexity increases
Solution Approach 1:
The patent employs bimetallic strips that utilize thermal expansion differential between two different metals to sense temperature changes. When the temperature changes, the bimetallic strip bends or straightens, mechanically actuating the drain valve and exhaust valve to open or close accordingly, providing automatic temperature-controlled operation without complex electronics.
Solution Approach 2:
The bimetallic strip-based control mechanism serves multiple functions: it controls both the drain valve for water outflow and the exhaust valve for steam venting. This universal temperature-sensing mechanism replaces what would otherwise require separate control systems for each valve, simplifying the overall device complexity while maintaining consistent coffee brewing temperature control.
3Volume of moving object
If the coffee machine is designed to be compact, then the machine size is reduced, but the functionality and coffee quality consistency may be compromised
Solution Approach 1:
The patent integrates the bimetallic strip control mechanisms directly within the compact housing structure, nesting the temperature-sensing and valve-control functions within the existing machine components. The drain mechanism and exhaust mechanism are incorporated into the compact design without requiring additional external control units, maintaining full functionality within a reduced size.
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 simplifies maintenance, reduces machine size, ensures consistent coffee quality, and enhances safety through automatic temperature-controlled mechanisms, while allowing for convenient operation and high-quality coffee brewing.
Implementation Method 1
The sheet of drain valve is capable of deformation that allows the status of the water outlet to change from blocking the water outlet to opening the water outlet when the ambient temperature at the water outlet is increased to a first temperature
Implementation Method 2
The automatic exhaust sheet is capable of deformation that allows the status of the steam outlet to change from blocking the steam outlet to opening the steam outlet when the ambient temperature at the steam outlet is increased to a second temperature
Implementation Method 3
An aperture is provided on the elastic film, which allows coffee to flow therethrough when the pressure on the elastic film is up to a certain value
Data Source
Figure 1
Figure 2~3
Figure 4~5
AI summary
A coffee machine comprises a pot liner (11) and a heating mechanism for heating the pot liner (11). The pot liner (11) has a water inlet and a water outlet. An automatic drain mechanism (a) is provided at the water outlet of the pot liner (11) for opening or blocking the water outlet according to the ambient temperature at the water outlet. The automatic drain mechanism (a) can be used to control outflow of the heated water from the pot liner (11) according to the ambient temperature, so that the structure for exhausting water is simplified and the volume of the coffee machine is reduced. Moreover, the fluid flowing out under the pressure generated due to steam will facilitate to brew ground coffee, thereby enhancing the quality of coffee.