Steam Generator Channel Layout for Limescale Separation
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Solution Overview
Problem
Existing steam generators suffer from limescale and solid residue buildup in the steam circulation channel, leading to inefficiencies, steam quality issues, and difficulty in complete removal of deposits, which can result in water leaks and soiling of ironed items.
Innovation Solution
A steam generator design with a main body shaped as a parallelepiped, featuring a vaporization zone and a steam path with a central inlet aperture and a lower chamber for collecting solid residues, along with a unique steam path configuration that includes vertical and horizontal segments and wide loops to facilitate gravitational separation of limescale and other residues.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the steam circulation channel has a convoluted path with restrictions and edges to define steam flow, then steam generation efficiency is improved, but limescale and solid residues accumulate in the channel causing blockages and reducing reliability
Solution Approach 1:
The steam circulation channel is divided into multiple segments including vertical segments, horizontal segments, and wide loops. This segmentation allows steam to follow a controlled path while providing multiple opportunities for gravitational separation of residues, preventing accumulation in any single location and maintaining channel reliability.
Solution Approach 2:
The steam path incorporates wide loops that create additional spatial dimensions within the channel. These loops provide extended pathways and gravitational separation zones where residues can settle out of the steam flow, effectively adding a gravitational separation dimension to the steam circulation system.
2Volume of moving object
If the vaporization zone is made small to reduce device size, then the appliance becomes more compact, but the effectiveness of steam generation and the ability to remove deposits is reduced
Solution Approach 1:
The invention optimizes the local quality of the vaporization zone by strategically positioning it within the main body and designing its internal geometry to maximize evaporation efficiency. The vaporization zone is equipped with heating elements and configured to create optimal water-heat contact surfaces, ensuring high productivity within a compact volume.
Solution Approach 2:
The steam path extends in multiple dimensions with vertical and horizontal segments and wide loops, effectively increasing the functional volume for steam circulation without significantly increasing the overall device footprint. This multi-dimensional approach allows efficient steam generation and residue separation within a compact form factor.
3Reliability
If cleaning operations are performed to remove limescale deposits, then steam quality is temporarily improved, but small and medium-sized particles remain attached to walls and detach randomly, continuing to cause problems
Solution Approach 1:
The steam circulation channel is pre-configured with wide loops and gravitational separation zones that continuously prevent residue accumulation before it can attach to channel walls. This preliminary gravitational separation action occurs during normal operation, minimizing the need for cleaning and preventing the attachment of particles that would later detach and contaminate steam.
Solution Approach 2:
The steam circulation system performs self-cleaning through its gravitational separation mechanism. The wide loops and vertical segments create conditions where residues automatically separate from steam flow and settle in designated areas during normal operation, eliminating the need for external cleaning interventions and preventing particle re-entrainment.
4Productivity
If the steam circulation channel has multiple restrictions and edges to control steam flow, then steam delivery is improved, but water leaks from the ironing plate and delivery holes become clogged
Solution Approach 1:
The invention extracts harmful solid residues from the steam flow through gravitational separation in wide loops and vertical segments before the steam reaches the delivery plate. By removing residues upstream, the delivery holes remain clear and water leakage is prevented, maintaining steam delivery efficiency without the harmful effects of particle accumulation.
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
Prevents limescale and residues from reaching the delivery plate, maintaining steam quality and efficiency over time, reducing wear on components, and enabling effective cleaning of the steam generator.
Implementation Method 1
The heating member, when selectively activated, causes the water introduced into the vaporization chamber to evaporate substantially instantaneously
Implementation Method 2
the steam circulation channel has an irregular and rather convoluted development with a plurality of restrictions and edges
Data Source
Figure 1~3
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Figure 6~8
AI summary
A steam generator (10) for a household appliance, preferably for a vertical iron, configured to assume, during use, a substantially vertical work position. The steam generator (10) comprises a main body (12) substantially in the shape of a parallelepiped and shaped so that it internally defines a vaporization zone (25) and a path (P) for the steam. The main body (12) comprises both an inlet aperture (29) disposed in correspondence with the vaporization zone (25) and configured to allow the introduction of water therein, and one or more outlet apertures (33), configured to allow steam to exit from the main body (12).