Steam Generator Fin Spacing for Scale-Resistant Steam Flow
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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, compromising long-term steam generating performance.
Innovation Solution
The design incorporates fins with varying distances to enhance heat transfer efficiency and prevent scale accumulation, along with a recess in the water storage chamber to reduce scale adherence, and a water supply system that maintains optimal water levels to minimize high-temperature areas where scales tend to form.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If fins are placed close together to increase heat transfer efficiency, then heat transfer efficiency is improved, but scale accumulation between fins increases causing complete clogging
Solution Approach 1:
The patent applies local quality by varying the spacing between fins - closer spacing near the heating portion for efficient heat transfer, and wider spacing toward the steam spout port to prevent scale accumulation and facilitate scale discharge. This non-uniform fin spacing creates different local characteristics to simultaneously achieve both heat transfer efficiency and scale prevention.
Solution Approach 2:
The fin structure is segmented into multiple regions with different spacing characteristics. The first fin spacing is designed for heat transfer efficiency while the second fin spacing is designed for scale prevention, effectively dividing the steam generator interior into functional zones that address different requirements simultaneously.
2Reliability
If water level is increased to prevent scale accumulation, then scale adherence is reduced, but steam passage may be blocked by excessive water
Solution Approach 1:
The patent creates different functional zones within the water storage chamber - a lower water level zone for steam generation and an upper zone for scale prevention. By controlling water level to remain below a specific threshold, the system maintains different conditions in different regions, allowing steam passages to remain clear while preventing scale accumulation in the heating area.
3Strength
If tube thickness is increased to prevent tube rupture from pressure buildup, then strength is improved, but heat transfer efficiency decreases
Solution Approach 1:
The patent optimizes the wall thickness parameter of the water storage chamber to achieve a balance between strength and heat transfer. By carefully selecting the thickness parameter, the system prevents tube rupture from pressure buildup while maintaining sufficient thermal conductivity for efficient steam generation, avoiding both over-thickening and under-thickening extremes.
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 configuration ensures consistent steam output and prevents leaks, maintaining steam generating performance over long-term use by reducing scale buildup and increasing heat transfer efficiency.
Implementation Method 1
a heating portion for heating water stored in the water storage chamber to generate steam
Implementation Method 2
a water supply device for supplying the water storage chamber with water
Implementation Method 3
a steam spout port for ejecting steam generated in the water storage chamber
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.