Annular Shell Ventilator Slit Outlet Design
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Solution Overview
Problem
Existing ventilators face issues with energy loss, airflow turbulence, noise, and complex structures leading to leakage risks due to turbulent gas discharge and the need for rotor speed adjustments to increase pressure and flow, which can result in rotor heating and shortened lifespan.
Innovation Solution
A ventilator design featuring an annular shell with a slit-shaped air outlet and a cyclone accelerator to guide gas flow, increasing ventilation volume and pressure without increasing rotor speed, and incorporating a buffer part for noise reduction and a filter for safety, along with a heat-humidity exchanger for humidification.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the blower increases rotor speed to generate higher pressure and flow, then the ventilation output is improved, but rotor heating and energy loss increase
Solution Approach 1:
The patent changes the geometric parameters of the air outlet from a conventional circular shape to a slit shape with specific width-to-length ratio. This parameter change allows the system to achieve higher ventilation output and pressure without increasing rotor speed, thereby avoiding the energy loss and rotor heating that would result from speed increases.
2Productivity
If the blower increases rotor speed to generate higher pressure and flow, then the ventilation output is improved, but noise increases suddenly
Solution Approach 1:
By changing the air outlet geometry to a slit shape with optimized dimensions, the patent achieves higher ventilation output without increasing rotor speed. This avoids the sudden noise increase that occurs when rotor speed is increased, thus resolving the contradiction between productivity and noise control.
3Object-generated harmful factors
If the ventilator uses a conventional blower structure with buffer and sealing components, then noise reduction is achieved, but the structure becomes complex with high leakage risk
Solution Approach 1:
The patent extracts and removes the complex buffer structure and multiple sealing components from the conventional blower design. By taking out these unnecessary elements and replacing them with the simplified slit-shaped air outlet, the system achieves noise reduction through geometric optimization rather than complex mechanical structures, thereby reducing structural complexity and leakage risk.
Solution Approach 2:
The patent replaces the mechanical buffer structure and sealing systems with a geometrically optimized air outlet design. This substitution eliminates the need for complex mechanical components while achieving the same or better noise reduction performance, thus simplifying the overall structure.
4Object-generated harmful factors
If the ventilator uses a conventional blower structure with buffer and sealing components, then noise reduction is achieved, but the structure becomes complex
Solution Approach 1:
The patent changes the air outlet geometry to a slit shape with optimized width-to-length ratio, replacing complex mechanical noise reduction structures with a geometric solution. This parameter change achieves noise control while significantly simplifying the overall device structure.
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 ventilator achieves increased ventilation volume and pressure with smoother gas flow, reduced energy consumption, lower noise, and a simpler structure with fewer components, enhancing usability and maintenance.
Implementation Method 1
after entering the annular gas cavity through the air inlet, the gas may form a vortex in the annular gas cavity and fill the annular gas cavity
Implementation Method 2
the air outlet has a slit shape extending along a circumferential direction of the annular shell and is disposed to be capable to guide gas flows out towards the air outlet end
Implementation Method 3
incorporating a buffer part for noise reduction
Data Source
Figure 1~2
Figure 3~4
Figure 5
AI summary
The present disclosure relates to a field of ventilatory treatment apparatus, and discloses a ventilator, the ventilator includes a ventilation body (10), the ventilation body (10) includes a ventilation cavity (11) and an air inlet end (12) and an air outlet end (13) communicating with the ventilation cavity (11), the ventilation body (10) further includes an annular shell (14) configured to form the ventilation cavity (11), the annular shell (14) is formed with an annular cavity (15) inside, an air inlet (16) and an air outlet (17) communicating with the annular cavity (15) are disposed on the annular shell (14), the air outlet (17) is communicated with the annular cavity (15) and the ventilation cavity (11), the air outlet (17) has a slit shape extending along a circumferential direction of the annular shell (14) and is disposed to be capable to guide gas flows out towards the air outlet end (13). The ventilator of the present disclosure may greatly increase the ventilation volume and the gas pressure, by using the ventilation body as mentioned above.