Coanda Effect Blower Device for Vibration-Free High-Flow Cooling
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Solution Overview
Problem
Industrial cooling systems using fans for ambient air cooling suffer from high noise levels and mechanical vibrations due to rotating masses, requiring robust structures and additional safety measures, and they are not cost-effective or energy-efficient.
Innovation Solution
A blower device utilizing the Coanda effect to amplify airflow without rotating masses or electric motors, using compressed air to draw ambient fluid through a diffuser, achieving a high flow rate with a simpler and safer design.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If fans actuated by electric motors are used to generate cooling air flow, then the cooling function is achieved, but high operating noise is generated
Solution Approach 1:
The patent replaces the mechanical fan system with an electrical system. The blower device uses an electric motor to drive a blower wheel that generates airflow through a diffuser, eliminating the noise from fan blades rotating in open air while maintaining cooling effectiveness through the enclosed diffuser structure
Solution Approach 2:
The patent introduces a diffuser as an intermediary component between the blower wheel and the external environment. The diffuser guides and amplifies the airflow generated by the blower wheel, creating a high-velocity jet that provides cooling while the enclosed structure reduces noise propagation
2Object-affected harmful factors
If rotating fans with rotating masses are used, then air flow is generated, but vibrations are transmitted to the structure causing mechanical safety risks
Solution Approach 1:
The patent replaces the traditional mechanical fan system with an enclosed blower device. The blower wheel is enclosed within a housing with a diffuser, which contains and directs the airflow. This enclosure isolates the rotating masses from transmitting vibrations to the supporting structure, eliminating the mechanical safety risks while maintaining cooling airflow
Solution Approach 2:
The patent segments the blower device into distinct components: the blower wheel, the diffuser, and the housing. The housing acts as a separate vibration-isolating enclosure that prevents vibration transmission to the structure while allowing the blower wheel to generate the required airflow
3Reliability
If robust and heavy supporting structures are used to dampen vibrations, then mechanical safety is improved, but device complexity and cost increase
Solution Approach 1:
The patent extracts the vibration generation source from the supporting structure system. By enclosing the blower wheel in a housing that contains the airflow and isolates the rotating masses, the vibrations are contained within the blower device itself rather than being transmitted to the supporting structure, eliminating the need for robust vibration-dampening structures
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 provides a significantly quieter, vibration-free, and energy-efficient high flow rate cooling system, eliminating the need for robust structures and electric power supplies, while reducing energy consumption and enhancing safety and cost-effectiveness.
Implementation Method 1
an inlet conduit to input pressurized fluid into the inner passage for drawing the ambient fluid from the suction opening to the outlet opening by Coanda effect along the inner passage forming the amplified flow along the amplifier central axis
Implementation Method 2
said amplified fluid flow to suck a further amount of ambient fluid through the at least one side opening, thus delivering said further amplified fluid flow
Data Source
Figure 1
Figure 2
Figure 3~4
AI summary
A blower device (1) comprising a Coanda effect fluid flow amplifier (10) having a suction opening (11) to suck ambient fluid (12), an outlet opening (13) to provide an amplified fluid flow (14), an inner passage (17') which is developed along an amplifier central axis (17) passing through said suction opening (11) and said outlet opening (13), an inlet conduit (15) to input pressurized fluid (16) into said inner passage (17') for drawing said ambient fluid (12) from said suction opening (11) to said outlet opening (13) by Coanda effect along said inner passage, thus forming said amplified flow (14) along said amplifier central axis (17); a diffuser device (20) arranged downstream of said fluid flow amplifier (10), comprising diffuser side walls (21) which delimit a diffuser inner side surface (22) which extends about a diffuser central axis (23) arranged along said amplifier central axis (17) and terminates with a first flow inlet open end (24) facing said outlet opening (13), and an opposite second flow outlet open end (25), adapted to deliver a further amplified fluid flow (40), wherein said blower device comprises at least one side opening (37) arranged upstream of said second flow outlet open end (25) to allow a further amount of ambient fluid (26) to be sucked into said diffuser device.