Cordless Liquid Heating Vessel With Sensorless Level and Temperature Control
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Solution Overview
Problem
Existing electrically powered liquid heating vessels face challenges in being washproof due to electrical connections and require temperature and liquid level sensors, which can be cumbersome and require additional components like thermistors.
Innovation Solution
A cordless liquid heating vessel design with integrated electronic controls and optical or infrared connectors for communication between the vessel and base, allowing for accurate liquid level detection and temperature monitoring without internal sensors, and enabling remote control functionality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If electrical connections are provided to the vessel body, then power can be supplied to heating elements and controls, but the vessel cannot easily be made washproof
Solution Approach 1:
The system is divided into two separate parts: the vessel body containing only the heating element (which can be washproof) and the electronic control unit (which contains all electrical connections and electronics). The heating element can be independently washed and sterilized, while the electronic controls remain in the base unit, eliminating the need for sealed electrical connections in the vessel body.
Solution Approach 2:
All electrical connections, electronic controls, and sensitive components are extracted from the vessel body and placed in the base unit. The vessel body is left with only the simple heating element and no electrical connections, making it inherently washproof and suitable for sterilization.
2Measurement precision
If thermistors or temperature sensors are provided within the vessel body, then temperature can be detected, but the vessel structure becomes more complex and less washproof
Solution Approach 1:
The patent uses the heating element itself as an intermediary to transfer temperature information. The heating element's resistance changes with temperature, and this information is transmitted to the base unit's control electronics through electrical connections in the base, eliminating the need for separate temperature sensors in the vessel body.
Solution Approach 2:
The patent replaces mechanical/physical temperature sensors (thermistors) with an electrical measurement approach using the heating element's resistance characteristics. The heating element serves dual purposes: heating and temperature sensing, simplifying the overall system.
3Measurement precision
If traditional level detection methods are used, then liquid level can be detected, but additional components and electrical connections are required in the vessel body
Solution Approach 1:
The heating element serves multiple functions: heating the liquid and detecting the liquid level. When the heating element is not in contact with liquid, its electrical characteristics change, providing level detection information to the base unit's controller without requiring separate level sensors or additional electrical connections in the vessel body.
Solution Approach 2:
The heating element is designed to perform multiple functions: primary heating, temperature sensing through resistance changes, and liquid level detection through electrical characteristic changes. This multi-functionality eliminates the need for separate sensors and reduces overall system 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 provides a washproof design, accurate temperature and liquid level monitoring, and enhanced user convenience through remote control capabilities, improving the efficiency and usability of liquid heating vessels.
Implementation Method 1
an infra-red or optical coupler that provides an infra-red or optical coupling with the circular or annular light guide
Implementation Method 2
an infra-red or optical coupler that provides an infra-red or optical coupling
Data Source
Figure 1
Figure 2~3
Figure 4~5
AI summary
The utility model discloses a liquid heating container including an electronic controller. The electronic controller is designed to have one or more of functions such as detecting/or controlling boiling or sub-boiling temperature, detecting volume/ a horizontal plane, detecting and/ or inhibiting water deposit through ultrasonic, determining the level of service efficiency, automatically removing the water deposit, and controlling light. Different beneficial lighting devices are arranged. A halogen lamp is used as a muff heater. Various modes of heating and lighting are provided by controlling a plurality of the halogen lamps.