Steam Iron Pump Control Using Accelerometer-Based Movement Detection
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Solution Overview
Problem
Conventional steam irons cannot control the intensity of steam output during ironing, complicating the algorithms needed for simultaneous control of heating members and lacking the ability to adjust steam based on user movement speed.
Innovation Solution
A steam iron with a three-axis accelerometer that measures acceleration to control the water supply pump, adjusting steam output based on user movement speed, eliminating the need for a dedicated steam chamber and multiple heating members.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If a conventional steam iron uses a steam chamber with multiple heating members to generate and control steam, then steam generation capability is improved, but device complexity increases due to multiple heating members and complicated control algorithms
Solution Approach 1:
The patent extracts the steam chamber and multiple heating members from the system, replacing them with a direct water supply mechanism that delivers liquid water to the soleplate. This eliminates the complex steam generation subsystem while maintaining steam output capability through direct evaporation on the soleplate surface during ironing.
Solution Approach 2:
The soleplate serves multiple functions: it is both the heating surface for ironing and the evaporation surface for steam generation. By eliminating the dedicated steam chamber, the system uses the soleplate's thermal properties to directly convert supplied water into steam, reducing component count while maintaining functionality.
2Ease of operation
If a conventional steam iron uses orientation-based control to open or close the steam valve, then basic steam control is achieved, but the ability to control steam intensity based on user movement speed is lost
Solution Approach 1:
The patent replaces static orientation-based valve control with dynamic pump control that responds to real-time accelerometer data. The water pump's operation is continuously adjusted based on detected movement speed, enabling the system to adapt steam output dynamically to the user's ironing pace and fabric requirements.
Solution Approach 2:
The system incorporates an accelerometer that continuously monitors the iron's movement and provides feedback to the control unit. Based on this feedback, the control unit adjusts the water pump's operation in real-time, creating a closed-loop control system that adapts steam generation to actual usage conditions rather than relying on pre-set orientation positions.
3Temperature
If a steam iron uses multiple heating members in the water tank unit and steam unit, then comprehensive heating control is achieved, but the algorithms needed for simultaneous control become complicated
Solution Approach 1:
The patent removes the second heating member from the water tank unit and the third heating member from the steam chamber, eliminating the need for complex coordinated control of multiple heating elements. The soleplate's inherent thermal properties and direct water supply mechanism replace these extracted components, simplifying the control system while maintaining temperature control capability.
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 adjustable steam output based on user movement, optimizing steam application for effective ironing by reducing steam when swift movements indicate minimal creases and increasing steam when slow movements suggest more creases, improving ironing efficiency.
Implementation Method 1
heats up the sole plate unit so that the water supplied to the sole plate unit is heated to form the steam
Implementation Method 2
a pump that is adapted for supplying water to the sole plate unit
Data Source
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AI summary
A steam iron is adapted for ironing a piece of cloth with steam generated thereby. The steam iron includes a machine body unit (4), a sole plate unit (2), a water supply unit (5), a heating unit (3), and a control unit (6). The sole plate unit (2) is connected to a bottom end of the machine body unit (4). The water supply unit (5) is connected to the machine body unit (4) and includes a pump (51) that is adapted for supplying water to the sole plate unit (2). The heating unit (3) is connected to the sole plate unit (2) and heats up the sole plate unit (2) so that the water supplied to the sole plate unit (2) is heated to form the steam. The control unit (6) is connected to the machine body unit (4), measures moving speed of the steam iron and controls water output of the pump (51) based on the moving speed of the steam iron.