Furnace Wall System Gravity-Mounted Refractory Bricks
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Solution Overview
Problem
Existing furnace wall systems face challenges in achieving a permanent, holohedral mounting of refractory bricks due to thermal expansions, which complicates heat transfer and requires high technical effort for complex geometries and clamping systems.
Innovation Solution
A wall system design utilizing refractory bricks with elongated holes and inclined bearing surfaces, allowing bricks to be moved into a holohedral position using gravity, with restraining means to maintain this position even after thermal expansions, ensuring continuous heat transfer.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If complex geometries and clamping systems are used to achieve permanent holohedral mounting of refractory bricks, then mounting stability is improved, but device complexity and technical effort increase
Solution Approach 1:
The system divides the mounting function into separate components: the wall structure with bearing surfaces, the refractory bricks with openings, and the rods as connecting elements. This segmentation allows each component to have a simple, standardized geometry while achieving stable mounting through their coordinated interaction, eliminating the need for complex integrated geometries.
Solution Approach 2:
The rods serve as intermediary elements that connect the refractory bricks to the wall structure. Instead of requiring complex clamping systems directly attached to the bricks, the rods mediate the connection by passing through the brick openings and engaging with the bearing surfaces on the wall, simplifying both the brick geometry and the mounting mechanism.
2Loss of energy
If refractory bricks are mounted holohedrally to ensure good heat transfer, then heat conduction is improved, but adaptability to thermal expansion decreases
Solution Approach 1:
The mounting system transitions from a static, rigid connection to a dynamic one that can adapt to thermal expansion. The rods passing through openings allow for relative movement between the bricks and the wall, enabling the structure to accommodate dimensional changes due to temperature variations while maintaining continuous contact for heat transfer.
Solution Approach 2:
The system changes the mounting parameters from fixed geometric constraints to a more flexible arrangement where the rods can move along their length within the openings. This parameter change allows the structure to adapt to thermal expansion while preserving the holohedral mounting configuration needed for effective heat conduction.
3Ease of manufacture
If unformed refractory material is used to coat the wall, then ease of manufacture is improved, but resistance against infiltration and erosion decreases
Solution Approach 1:
The solution applies different qualities to different parts of the refractory lining: formed refractory bricks are used where high resistance to infiltration and erosion is needed (facing the furnace chamber), while unformed refractory material can be used in less critical areas or as additional coating. This local differentiation allows the system to optimize both manufacturing ease and protective performance.
Solution Approach 2:
The system creates a composite refractory structure by combining formed bricks with unformed refractory material. The formed bricks provide the primary protective function against infiltration and erosion, while the unformed material can fill gaps, provide additional insulation, or serve as a bonding matrix, achieving a synergistic effect that combines the advantages of both material forms.
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 system allows for simple and efficient mounting of refractory bricks holohedrally on the furnace wall, maintaining effective heat transfer and stability despite thermal changes, reducing technical complexity and ensuring long-term performance.
Implementation Method 1
the bricks, which in each case arranged next to one another in a row, can be moved from a first position, in which a clearance is embodied between the bricks and the heat-conducting layer, into a second position, in which the bricks are mounted holohedrally to the heat-conducting layer with their side, which faces the inner side of the wall, by means of the force of gravity
Implementation Method 2
A heat-conducting layer, which is arranged on the inner side of the wall... a side, which faces the inner side of the wall and which can be mounted holohedrally to the heat-conducting layer... ensuring continuous heat transfer
Data Source
Figure 1
Figure 2
Figure 3a
AI summary
The invention relates to a wall system for a furnace, which comprises the following features: a wall (10), which has an inner side (11) facing the furnace chamber and an outer side (12) facing the environment; a heat-conducting layer (60), which is arranged on the inner side (11) of the wall (10); bearing surfaces (25), which are embodied on the inner side (11) of the wall (10); refractory bricks (31), which in each case have an opening (37), which goes through the brick (31), are arranged next to one another in at least one row (30.1-30.6), in each case have a side (32), which faces the inner side (11) of the wall (10) and which can be mounted holohedrally to heat-conducting layer, wherein the openings (37) of the bricks (31), which are in each case arranged next to one another in a row (30.1-30.6), are aligned with one another; rods (40.1-40.6), which are in each case guided through the aligned openings (37) of the bricks (31), which are arranged next to one another in a row (30.1-30.6), and which in each case bear on a number of the bearing surfaces (25); wherein the bricks (31), which are in each case arranged next to one another in a row (30.1-30.6), can be moved from a first position, in which a clearance is embodied between the bricks (31) and the heat-conducting layer (60), into a second position, in which the bricks (31) are mounted holohedrally to the heat-conducting layer (60) with their side (32), which faces the inner side (11) of the wall (10), by means of the force of gravity, a furnace comprising such a wall system and a method for providing such a wall system.