Dynamic dust separator
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Solution Overview
Problem
Dynamic dust separators with cyclone filters are sensitive to flow variations, leading to noise and pressure loss issues when handling high air flows, and have a reduced contact surface for pollutant separation.
Innovation Solution
A hyperbolically shaped cyclone spiral with vertical inlets and outlets, allowing for a constant pressure drop and increased air speed, enabling efficient separation of pollutants, including grease and dust, with a collecting vessel for gravity-driven collection and a pleated band for small particle adherence.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the cylinder diameter is increased to provide a large contact surface for pollutant separation, then the separation efficiency is improved, but the device size and complexity increase
Solution Approach 1:
The cyclone separator is divided into multiple cyclone cores arranged in a battery configuration. Each core provides a contact surface for separation, and multiple cores collectively provide a large total contact surface area without requiring a single large-diameter cylinder. This segmentation allows the system to achieve high separation efficiency while maintaining a compact overall device size.
Solution Approach 2:
Instead of increasing the diameter (horizontal dimension) of a single cyclone, the invention stacks multiple cyclone cores vertically and arranges them in a three-dimensional battery configuration. This transitions from a two-dimensional horizontal expansion to a three-dimensional arrangement, providing large total contact surface area while maintaining a compact footprint and manageable device complexity.
2Productivity
If the air flow rate is increased to handle high volumes of polluted air, then the productivity is improved, but noise and pressure losses increase
Solution Approach 1:
The total air flow is distributed across multiple cyclone cores rather than forcing all air through a single cyclone. Each core handles a portion of the total flow at optimized velocity, preventing excessive flow rates in individual cyclones that would cause noise and pressure losses. This segmentation allows high total productivity while maintaining low harmful effects in each unit.
Solution Approach 2:
Multiple cyclone cores are merged into a single battery system with common inlet and outlet connections. The individual cyclones work in parallel, combining their separation capabilities to handle high total air flows. The merged system achieves high productivity equivalent to a large single cyclone but without the noise and pressure loss penalties of excessive flow through a single unit.
3Reliability
If the cyclone is designed for constant pressure drop operation, then the suction effect is maintained, but the sensitivity to flow variations is reduced
Solution Approach 1:
Multiple cyclone cores are combined in a battery configuration with common inlet and outlet manifolds. This merging creates a system where individual flow variations in one or more cores are compensated by the others, maintaining relatively constant total flow and pressure drop across the entire battery. The combined system provides stable suction effect while being adaptable to varying operating conditions.
Solution Approach 2:
The system operates at an optimized pressure drop parameter that maintains constant suction effect across varying flow conditions. By designing the cyclone battery with specific geometric parameters and arrangement, the system achieves a operating point where the suction effect remains stable even as total flow varies, reducing sensitivity to flow variations while maintaining reliability.
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 solution maintains a strong suction effect without noise or pressure loss, achieving efficient separation of pollutants across varying loads and sizes, including small particles, in kitchen equipment and ventilation systems.
Implementation Method 1
The polluted air is forced around in a vortex, the centrifugal force causing the pollutants to be thrown out towards the outer edge of the cyclone core and separated
Implementation Method 2
Since the cyclone spiral is vertically arranged, the pollutants separated from the air may, by means of gravity, run down the inner face of the cyclone core
Data Source
Figure 1~6
AI summary
Dynamic dust separator permitting considerable flows, such that a strong suction effect can be maintained from start to finish without great pressure losses or noise-related problems. The dynamic dust separator contains compact cyclone spirals (1) with a large contact surface for the separated pollutants. The cyclone spirals (1) are hyperbolically shaped and comprise cyclone cores (2) with vertical inlets (3) for polluted air (5) and outlets (4) at the top for cleaned air (6). The polluted air (5) is forced around in a vortex, the centrifugal force causing the pollutants to be thrown towards the outer edge and separated. The dynamic dust separator is extremely efficient, preferably for separation of grease from extracted air from kitchen equipment, such as frying tables, deep-fat fryers, cookers, etc., but also for separation of water and dust particles from polluted air in ventilation systems.