Air Purifier Front-Discharge Layout to Prevent Recirculation
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Solution Overview
Problem
Traditional air purifiers have a narrow purification range and poor purification effect due to the recirculation of purified air, which limits their effectiveness in cleaning the air around them.
Innovation Solution
The air purifier design includes a shell assembly with air inlets and outlets positioned on opposite sides, featuring a filter assembly, an air inflow guide assembly, a fan, and a diffusion air outflow assembly that guides purified air to outlets, reducing flow velocity and increasing pressure, allowing air to flow in from the back and out from the front, expanding the purification range and improving the purification effect.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If air outlets are positioned on the top side or two sides with air inlets, then air can be discharged, but purified air is sucked back into the air purifier via air inlets to be purified again, resulting in narrow purification range and poor purification effect
Solution Approach 1:
The patent positions air outlets on the front side of the shell assembly while air inlets are on the back side, creating an asymmetric airflow pattern. This asymmetric arrangement ensures that discharged air flows forward and away from the air inlets, preventing recirculation and expanding the purification range throughout the room.
Solution Approach 2:
The patent changes the spatial dimension of air discharge from vertical (top side) or lateral (two sides) to forward direction (front side). This dimensional change in airflow direction allows purified air to move in a straight line forward, avoiding the recirculation problem and improving overall purification coverage.
2Productivity
If air flow velocity is high at air outlets, then air can be discharged efficiently, but the discharged air does not diffuse outwardly enough, limiting purification range
Solution Approach 1:
The patent employs a diffusion air outflow assembly that can rotate to dynamically adjust the airflow direction. This dynamic adjustment allows the system to optimize both the discharge efficiency and the diffusion range of purified air, enabling the air flow to expand outwardly while maintaining effective discharge velocity.
Solution Approach 2:
The patent changes the flow parameters of discharged air by using a diffusion structure that increases pressure and decreases flow velocity. This parameter transformation allows the air to diffuse outwardly over a larger area while still being discharged efficiently, expanding the purification range.
3Area of stationary object
If air flow pressure is low, then air can diffuse outwardly, but the flow velocity is insufficient for effective air discharge and purification
Solution Approach 1:
The patent uses a diffusion air outflow assembly that transforms air flow parameters by increasing pressure and decreasing velocity in a controlled manner. The diffusion structure creates a pressure gradient that accelerates air outwardly while maintaining sufficient discharge velocity, resolving the contradiction between diffusion range and flow velocity.
Solution Approach 2:
The patent applies pneumatic principles through the diffusion air outflow assembly, which uses pressure differential and fluid dynamics to control air flow. The assembly creates a pressure build-up followed by controlled expansion, enabling both effective discharge velocity and wide diffusion range simultaneously.
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
This design enhances the air purification range and effect by ensuring purified air is diffused outwardly, preventing recirculation and improving the comfort and usability of the air discharged, thereby expanding the coverage and efficiency of air purification.
Implementation Method 1
the fan generates an air flow which flows into the first receiving cavity via the air inlets
Implementation Method 2
the diffusion air outflow assembly is able to rotate to guide the air flow to the air outlets, enable the air flow to diffuse outwards and decrease the flow velocity of the air flow
Implementation Method 3
decrease the flow velocity of the air flow and increase the pressure of the air flow
Data Source
AI summary
The application provides an air purifier comprising a shell assembly having air inlets and air outlets, and a filter assembly, an air inflow guide assembly, a fan and a diffusion air outflow assembly sequentially arranged from back to front. The filter assembly can purify air entering the filter assembly via the air inlets and flowing through the filter assembly. The air inflow guide assembly defines a guide channel between the filter assembly and the fan. The fan generates an air flow that flows into a first receiving cavity via the air inlets and sequentially flows through each assembly. The diffusion air outflow assembly can rotate to guide the air flow to the air outlets, enable the air flow to diffuse outwards and decrease the flow velocity of the air flow. The air purifier expands the purification range of the air purifier and improves the purification effect of the air purifier.