Coffee maker and heating control system thereof
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing coffee machines require flow meters and air pumps, which increase production costs and are not essential for achieving the desired flow rate and drying functionality.
Innovation Solution
A heating control system for a coffee maker comprising a water tank, a water pump, a heating element, a temperature detecting member, and a control module that controls the water pump and heating element based on temperature readings, eliminating the need for flow meters and air pumps.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If flow meters and air pumps are added to the coffee machine, then the flow rate control and drying functions are improved, but the device complexity and production costs increase
Solution Approach 1:
The patent removes the flow meter from the system by using the water pump's inherent flow characteristics and control capabilities to achieve flow rate control without requiring a separate flow meter device. This extraction of the unnecessary component reduces device complexity while maintaining the required flow control function.
Solution Approach 2:
The water pump is designed to perform multiple functions: it controls water flow rate during brewing and also serves as the drying mechanism by continuing to pump water through the system after brewing. This multi-functionality eliminates the need for a separate air pump, reducing device complexity while maintaining both brewing and drying capabilities.
2Reliability
If flow meters and air pumps are added to the coffee machine, then the flow rate control and drying functions are improved, but the production costs increase
Solution Approach 1:
The water pump performs dual functions as both the brewing water delivery mechanism and the drying mechanism. After brewing completes, the pump continues to operate, forcing remaining water through the brewing chamber and heating element to evaporate and dry the coffee grounds. This eliminates the need for a separate air pump component, reducing production costs while maintaining effective drying function.
3Productivity
If the water pump pumps water continuously, then the brewing efficiency is improved, but the temperature control precision deteriorates
Solution Approach 1:
The control module implements periodic action by cycling the water pump on and off based on temperature feedback from the heating element. When the target temperature is reached, the pump stops; when temperature drops, the pump resumes. This periodic operation maintains both brewing efficiency and temperature control precision by preventing continuous pumping from causing temperature fluctuations.
Solution Approach 2:
The system uses feedback control where the control module continuously monitors the temperature from the heating element and adjusts the water pump operation accordingly. Based on the temperature feedback, the module determines when to start or stop the pump, ensuring precise temperature control while maintaining brewing efficiency through timely water delivery.
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 system achieves precise control over water flow and temperature, allowing for efficient brewing and steam drainage without the need for additional components, thereby reducing production costs.
Implementation Method 1
the heating element heats the water into hot water
Implementation Method 2
The temperature detecting member is configured to detect an output temperature of the heating element
Data Source
AI summary
A heating control system for a coffee maker consists of a water tank, a water pump, a heating element, a temperature detecting member, and a control module. The water pump is connected to the water tank and the heating element and is configured to pump water from the water tank to the heating element for heating. The heating element is configured to heat the water to output at least one of hot water or steam. The temperature detecting member is configured to detect an output temperature of the heating element. The control module is configured to control the water pump and the heating element based on the temperature detecting member.