Steam generator
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Solution Overview
Problem
Steam generators face issues with scale buildup, which narrows steam passages and can lead to leaks or tube failure, reducing their long-term steam generating performance.
Innovation Solution
A steam generator design featuring a water storage chamber with heating elements and a steam spout port flanked by fins, where the distance between the fins and the chamber wall varies to enhance heat transfer efficiency and prevent scale accumulation, ensuring continuous steam output even under increased pressure.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If water is supplied continuously to maintain steam generation, then steam output is maintained, but scale accumulation in the water storage chamber increases and can cause complete clogging
Solution Approach 1:
The water storage chamber is divided into multiple regions by the plurality of fins, creating separate zones that prevent scale from accumulating uniformly. The fins segment the chamber into first and second water storage regions, allowing scale to deposit in controlled areas away from critical steam passages.
Solution Approach 2:
The fins act as intermediary structures between the heating portion and the water storage chamber walls. These fins serve as scale collection surfaces, intercepting scale particles before they can reach and clog the steam passages, thereby protecting the steam generation system.
2Volume of moving object
If the water storage chamber is made compact to reduce size, then device dimensions are reduced, but heat transfer efficiency decreases and scale accumulation increases
Solution Approach 1:
The fins extend in the vertical direction within the compact water storage chamber, utilizing the vertical dimension to increase heat transfer surface area without increasing the horizontal footprint. This allows efficient heat transfer from the heating portion to water while maintaining a compact overall chamber volume.
Solution Approach 2:
The fins are designed with curved surfaces that optimize heat transfer by increasing the contact area between the heating portion and water. The curved geometry of the fins enhances thermal exchange efficiency within the limited space of the compact chamber.
3Productivity
If heating power is increased to maintain steam output under pressure, then steam generation is maintained, but scale formation accelerates and tube failure risk increases
Solution Approach 1:
The fins extract and separate scale particles from the water-heating system by providing dedicated deposition surfaces. Scale is drawn out from the critical steam passages and collected on the fin surfaces, allowing high-power heating to continue without accelerated scale formation in steam pathways.
Solution Approach 2:
Different regions of the water storage chamber have different functions: areas near the fins are designed for scale collection, while steam passages are protected from scale accumulation. This local differentiation allows high heating power to be applied without uniform scale formation throughout the chamber.
4Use of energy by moving object
If fins are positioned close to the heating portion to enhance heat transfer, then energy efficiency improves, but scale accumulation on fins increases and may block steam passages
Solution Approach 1:
The fins are positioned close to the heating portion to maximize heat transfer efficiency, and the scale accumulation that occurs on these fins is converted into a beneficial effect. The scale on fins acts as an insulating layer that protects the fins themselves from overheating while the fins continue to intercept scale particles before they reach steam passages.
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 design effectively prevents complete clogging and maintains steam generating performance over long-term use by promoting scale detachment and efficient heat transfer, preventing leaks and ensuring reliable operation.
Implementation Method 1
at least one heating portion which heats water in the water storage chamber to generate steam
Implementation Method 2
supplies water until a water level in a second tank as a water storage chamber reaches a level higher than an apex at a bending point of a discharge tube, and thus discharges the water in the second tank according to the siphon principle
Data Source
AI summary
A steam generator includes: a water storage chamber which stores water therein, at least one heating portion which heats water in the water storage chamber to generate steam, a water supply device which supplies the water storage chamber with water, a steam spout port which spouts the steam generated in the water storage chamber therethrough, and a plurality of fins positioned below the steam spout port in a steam-generating direction and spaced from one another, wherein a first distance between the plurality of fins differs from a second distance between an inner wall side surface of the water storage chamber and the fins.