Partitioned Steam Generator With Vertical Heater Layout
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Solution Overview
Problem
Steam generators with electric resistors face issues such as limescale deposition, corrosion, and long steam generation times due to the need for significant water volumes and mechanical stability concerns, which increase production costs and risk of superheating.
Innovation Solution
A steam generator design with a partitioned container, featuring a compact electric heating element vertically fixed in a wall, minimizing water volume and using a two-chamber structure to reduce steam generation time, balance pressures, and prevent limescale attachment, eliminating the need for a metal support and reducing corrosion risks.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a significant volume of water is used to ensure the resistor is always covered, then superheating is prevented, but steam generation time increases
Solution Approach 1:
The container is divided into two separate chambers: a first chamber for containing water to be heated by the resistor, and a second chamber for collecting steam. This segmentation allows the water volume in the first chamber to be minimized while ensuring the resistor remains covered, thereby reducing steam generation time without compromising superheating prevention.
2Adaptability or versatility
If electric resistors are arranged in the lower side of the water container, then water heating is enabled for low water levels, but limescale deposition increases and heat exchange decreases
Solution Approach 1:
The electric resistor is mounted vertically on a lateral wall of the first chamber rather than being positioned at the bottom. This dimensional change allows the resistor to extend from the water surface downward, ensuring continuous water coverage for heat exchange while facilitating easier removal and cleaning to prevent limescale accumulation.
3Strength
If a metal support is added to ensure mechanical stability of the resistor, then structural integrity is improved, but corrosion risk increases
Solution Approach 1:
The resistor mounting structure is designed with localized reinforcement at the wall opening where the resistor passes through, rather than using a comprehensive metal support structure. This localized approach provides necessary mechanical stability while minimizing the amount of metal in contact with water, thereby reducing corrosion risk.
4Loss of time
If the container is divided into two chambers, then water volume is reduced and steam generation time is minimized, but device complexity increases
Solution Approach 1:
The container is divided into two chambers by a partition wall with a communication opening near the bottom. This segmentation reduces the water volume in the heating chamber to minimize steam generation time, while the simple partition design with a single opening keeps the overall structure relatively simple and easy to manufacture.
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
This design reduces steam generation time, minimizes water volume, prevents limescale attachment, and eliminates the need for a metal support, thereby reducing production costs and corrosion risks while ensuring efficient heat exchange and water level balance.
Implementation Method 1
an electric heating element vertically fixed in an opening obtained in a first vertical wall of the container
Implementation Method 2
steam generated to flow from the evaporation chamber to the main chamber
Data Source
AI summary
Steam generator (1) is provided with an electric heating element (2) for heating water to be evaporated, consisting of an electric heating resistor (21) inserted in a profiled base (8) of a metal supporting element (7), fixed in a hole obtained in one of the vertical walls (15) of the container (4) for heating water.