S-Shaped Nozzle Base for Fluidized Bed Reactor
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Solution Overview
Problem
In small residential fluidized bed reactors, the simple bore design in the nozzle base allows material from the fluidized bed to enter the air chamber, necessitating frequent cleaning due to economic constraints against using bell-shaped or siphon-like air nozzles.
Innovation Solution
A nozzle base design featuring S-shaped openings formed by aligning blind holes in two plates, with optional longitudinal grooves for air exchange and arcuate depressions to prevent material deposition and enhance airflow, allowing for cost-effective production and easy cleaning.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If simple bores are used in the nozzle plate for small residential systems, then manufacturing cost is reduced, but material from the fluidized bed enters the air chamber requiring frequent cleaning
Solution Approach 1:
The invention transitions from simple circular bores to S-shaped openings formed by aligning blind holes through two plates. This dimensional transformation creates a path that extends through the nozzle base thickness, preventing material from falling directly through while maintaining manufacturing simplicity through drilling and milling operations.
Solution Approach 2:
The nozzle base is divided into two separate plates, each with blind holes that align when joined. This segmentation allows the formation of S-shaped openings without complex single-piece machining, reducing manufacturing cost while achieving the anti-contamination function.
2Object-affected harmful factors
If bell-shaped covers or siphon-like air nozzles are used, then material entry into the air chamber is prevented, but manufacturing complexity and cost increase significantly
Solution Approach 1:
The invention extracts the essential function of preventing material entry from the complex bell-shaped cover structure and implements it through a simpler S-shaped opening geometry formed by aligned blind holes in two plates, eliminating the need for protruding covers into the fluidized bed.
Solution Approach 2:
Instead of using external covers or protruding nozzles to prevent material entry, the invention inverts the approach by creating an S-shaped path through the nozzle base itself, where the airflow direction and path geometry inherently prevent material accumulation and entry.
3Ease of manufacture
If simple bores are used in the nozzle plate, then manufacturing is simple, but airflow efficiency decreases due to material accumulation
Solution Approach 1:
The S-shaped opening created by aligning blind holes through two plates provides a three-dimensional airflow path that prevents material from blocking the opening, maintaining airflow efficiency while keeping the manufacturing process simple through standard drilling and milling operations.
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
Prevents material from entering the air chamber, reduces cleaning frequency, and maintains airflow efficiency while being economical and simple to manufacture, suitable for small residential systems.
Implementation Method 1
the opposing blind holes align section by section with each other and with the openings of the respective opposite plate, thereby forming the S-shaped opening in cross-section
Implementation Method 2
a fluidized bed consisting of a bed of solid particles... in which a fluidized bed 2 is contained
Data Source
Figure 1~2
AI summary
The invention relates to a fluidized bed reactor comprising a combustion chamber (1) in which a fluidized bed (2) consisting of a bed of solid particles, preferably quartz sand, is stored, an air chamber (3) located below the combustion chamber (1) and a nozzle base (4) between the combustion chamber (1) and the air chamber (3), which has a plurality of openings (5) through which combustion air can be directed from the air chamber (3) into the fluidized bed (2).The nozzle base (4) is made of two superimposed plates (6, 7) which are connected to each other, each plate (6, 7) having a plurality of openings (8) and recesses (9) assigned to each opening (8) on one side of the plate, and wherein the recesses (9) bearing the plate sides face each other in the assembled state, wherein furthermore a recess (9) of one plate (6, 7) is sectionally aligned with an opening (8) and a section of the recess (9) assigned to this opening (8) of the other plate (7, 6), so that an S-shaped opening (5) for the combustion air is formed in each case.