Constant-temperature heating device and fluid heating electric appliance with same
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Solution Overview
Problem
Existing liquid heating electric appliances, such as garment steamers, face challenges in achieving high-precision constant temperature heating due to the mechanical characteristics of constant temperature switches, which result in significant temperature fluctuations.
Innovation Solution
A constant temperature heating device is proposed, comprising a water pump, a heating boiler, a liquid delivery pipeline, and a control circuit with an electronic control switch and a controller. This setup allows for quick switching on and off of the power supply to the heating boiler, enabling high-precision heating control and reducing temperature fluctuations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a mechanical constant temperature switch is used for heating control, then the device structure is simple, but the temperature fluctuation is large due to slow response speed
Solution Approach 1:
The patent replaces the mechanical constant temperature switch with an electronic control system comprising a temperature sensor, microcontroller, and solid-state switching components. This substitution eliminates the mechanical sensing and actuation mechanisms, enabling rapid response to temperature changes and precise control through electronic feedback, thereby resolving the contradiction between structural simplicity and temperature control precision.
Solution Approach 2:
The patent implements a closed-loop feedback control system where the temperature sensor continuously monitors the heating element temperature, the microcontroller processes the temperature data, and adjusts the power delivery accordingly. This feedback mechanism enables real-time temperature regulation with minimal fluctuation, overcoming the open-loop mechanical switch limitation that caused large temperature variations.
2Device complexity
If a mechanical constant temperature switch is used, then the control system is simple, but the response speed is slow causing large temperature differences between switching on and off
Solution Approach 1:
The patent replaces the mechanical constant temperature switch with an electronic control system comprising a temperature sensor, microcontroller, and solid-state switching components. This substitution eliminates the mechanical sensing and actuation mechanisms, enabling rapid response to temperature changes and precise control through electronic feedback, thereby resolving the contradiction between structural simplicity and temperature control precision.
Solution Approach 2:
The patent employs dynamic control through the microcontroller that can adjust the switching frequency and duty cycle based on real-time temperature feedback. This dynamic adjustment capability allows the system to respond rapidly to temperature changes and maintain optimal heating conditions, overcoming the fixed mechanical switch response characteristics.
3Manufacturing precision
If electronic control switch and controller are used for heating control, then the temperature control precision is high, but the device complexity increases
Solution Approach 1:
The patent integrates multiple functions into the microcontroller, including temperature data acquisition, analog-to-digital conversion, control algorithm execution, and switching control. This multi-functionality reduces the need for separate dedicated components for each function, thereby managing device complexity while maintaining high temperature control precision.
Solution Approach 2:
The patent combines the temperature sensor, control logic, and switching control into an integrated electronic control system managed by the microcontroller. This merging of previously separate components into a unified control architecture achieves precise temperature control while keeping the overall device complexity manageable through systematic integration.
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 implementation of the electronic control switch and controller in the constant temperature heating device significantly reduces temperature fluctuations, allowing for precise control of the liquid temperature within a narrow range, thus meeting the high-precision constant temperature heating requirement.
Implementation Method 1
heat the liquid through a heater to reach a relatively high temperature range, thereby converting the liquid into gas
Implementation Method 2
a water pump, a heating boiler, a liquid delivery pipeline... the water pump is used for pumping liquid into the heating boiler
Implementation Method 3
the constant temperature heating device further comprises a temperature sensor, which is used for detecting the temperature of the heating boiler
Implementation Method 4
a heat-dispersing surface that is connected to the liquid delivery pipeline, so as to dissipate heat from the silicon-controlled rectifier through the liquid delivery pipeline
Data Source
AI summary
Disclosed are a constant temperature heating device and fluid heating electrical appliances with the same. The constant temperature heating device comprises a water pump, a heating boiler, a liquid delivery pipeline, and a control circuit. The water pump and the heating boiler are connected through the liquid delivery pipeline, respectively. The water pump is used for pumping liquid into the heating boiler under the control of the control circuit, so as to heat the liquid through the heating boiler. The control circuit comprises an electronic control switch and a controller. The electronic control switch is arranged on a power supply circuit of the heating boiler, and the controller is used for carrying out heating control of the liquid in the heating boiler through the electronic control switch.