Gravity-Fed Steam Generator Scale Evacuation Structure
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Solution Overview
Problem
Household steam appliances suffer from progressive clogging of the supply conduit due to scale deposits, leading to malfunction, as existing solutions do not effectively evacuate scale particles, causing air to enter the tank and resulting in inefficient operation.
Innovation Solution
Incorporating a particle retention cavity below the inlet orifice in the pipe, with a transverse wall obstructing particle flow back to the boiling chamber, and a removable plug for easy evacuation, along with a filtration device to prevent scale particles from entering the supply duct, and a removable scale collector for efficient cleaning.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If water flows back and forth in the supply conduit during operation, then the liquid level in the boiling chamber is maintained, but scale particles rise and clog the supply conduit progressively
Solution Approach 1:
The invention extracts and removes scale particles from the water flow by introducing a separate drainage conduit that connects to the boiling chamber. This conduit allows scale particles to be evacuated separately from the main water supply, preventing their accumulation and clogging in the supply conduit while maintaining continuous water flow for steam generation.
2Object-generated harmful factors
If an evacuation duct is provided to remove scale particles, then some scale can be evacuated, but perfect evacuation is not guaranteed as particles agglomerate in different zones
Solution Approach 1:
The invention segments the evacuation process by providing multiple drainage conduits that connect to different zones of the boiling chamber. This segmentation ensures that scale particles agglomerated in different regions can be evacuated through different conduits, achieving complete removal rather than partial evacuation.
Solution Approach 2:
The invention adds a vertical dimension to the evacuation system by positioning drainage conduits at different heights and locations within the boiling chamber. This multi-dimensional arrangement allows scale particles to be evacuated from various zones simultaneously, preventing agglomeration in any single area.
3Object-generated harmful factors
If the supply conduit is made larger to prevent clogging, then scale particles can pass through more easily, but the device size increases and compactness is reduced
Solution Approach 1:
The invention segments the water flow and scale particle removal into separate pathways. The supply conduit maintains its original compact dimensions for water flow, while a separate drainage conduit handles scale particle evacuation. This segmentation allows the supply conduit to remain small without compromising scale particle passage capability.
Solution Approach 2:
The invention introduces a drainage conduit as an intermediary pathway that handles scale particle removal separately from the main water supply conduit. This intermediary system allows the supply conduit to maintain compact dimensions while scale particles are routed through the dedicated drainage path, preventing clogging without increasing overall device size.
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 effectively traps and evacuates scale particles, preventing conduit clogging, extending the appliance's service life and maintaining efficient operation by ensuring air exclusion and easy maintenance.
Implementation Method 1
a reservoir of liquid supplying the boiling chamber by gravity, the liquid flowing by gravity from the tank to the boiling chamber until the level of liquid in the boiling chamber reaches an equilibrium level
Implementation Method 2
a transverse wall projecting in the bottom of the pipe which obstructs the flow of particles from the cavity towards the boiling chamber
Data Source
Figure 1
Figure 2~4
Figure 5~6
AI summary
A household appliance comprising a base (1) for the production of steam, including a steam generator (5) comprising a boiling chamber (52) and a liquid reservoir (4) supplying the boiling chamber (52) by gravity, the liquid flowing by gravity from the reservoir (4) to the boiling chamber until the liquid level in the boiling chamber (52) reaches an equilibrium level, referred to as the reference level, at which the liquid level in the appliance prevents air from entering the reservoir (4), the boiling chamber (52) comprising a steam outlet (50) through which the steam can escape towards a working tool (3), such as a steaming brush, and a communication orifice (55) connected to a pipe (6; 106) having a discharge orifice (60; 160) closed by a removable plug (7; 107), characterized in that the pipe (6;106) is supplied with liquid from the reservoir (4) by a supply conduit (41) which opens into the pipe (6;106) at an inlet port (67, 167) located above a particle retention cavity (66; 166) in the lower part of the pipe (6; 106).