Blower Damper Mechanism for Adjustable Airflow Without Fan Movement
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Solution Overview
Problem
Existing blowers discharge air directly to users, causing discomfort due to strong airflow, require power-consuming movements to change wind direction, and are prone to dust ingress when not in use.
Innovation Solution
A blower design featuring a damper mechanism with adjustable discharge ports that allows indirect air delivery through multiple channels, enabling variable airflow direction adjustment without mechanical movement, and closes ports during non-operation to prevent dust entry.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If air is discharged directly to the user, then the air can be sent to a long distance, but the user may feel unpleasant due to excessively strong airflow
Solution Approach 1:
The air outlet is divided into multiple discharge ports (first discharge port and second discharge port) that can be independently controlled. This segmentation allows the airflow to be distributed across multiple channels rather than concentrated in one direction, reducing the intensity of airflow reaching the user while maintaining effective circulation distance.
Solution Approach 2:
The damper mechanism enables dynamic adjustment of the discharge ports' opening states. By controlling the dampers' position, the system can vary the airflow distribution between different ports, allowing flexible adjustment of airflow intensity and direction to balance circulation effectiveness with user comfort.
2Adaptability or versatility
If fans are moved or turned to change wind direction, then the airflow direction can be adjusted, but power is consumed and noise or vibration is generated
Solution Approach 1:
The patent replaces the mechanical movement of fans with a damper-based flow control system. Instead of physically moving or rotating the fan to change airflow direction, the system uses dampers to adjust the opening states of different discharge ports, thereby redirecting airflow through fixed fan positions. This substitution eliminates the need for mechanical movement, reducing power consumption, noise, and vibration.
Solution Approach 2:
The damper acts as an intermediary component between the fan and the discharge ports. By positioning the damper in the airflow path, it can modulate and redirect the airflow generated by the stationary fan, achieving direction control without moving the fan itself.
3Ease of operation
If the air outlet remains open, then the blower can operate immediately, but foreign substances such as dust can enter the device when the fan is not operated
Solution Approach 1:
The discharge ports are equipped with movable dampers that can dynamically change their opening state. When the fan is operating, the dampers are positioned to open the discharge ports for airflow. When the fan is not operating, the dampers automatically close the ports to prevent dust ingress, while the system remains ready for immediate operation.
Solution Approach 2:
The damper mechanism is designed to automatically respond to the fan's operational state, opening or closing the discharge ports based on whether the fan is running. This self-service functionality eliminates the need for manual intervention to protect against dust while maintaining operational readiness.
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
Provides user comfort by adjusting airflow direction and intensity, minimizes dust ingress, and optimizes energy consumption by eliminating the need for mechanical adjustments.
Implementation Method 1
a fan configured to generate flow of air
Implementation Method 2
the damper opens and closes the discharge port while moving in a front-rear direction behind the opening
Data Source
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AI summary
A blower is disclosed. The blower includes a fan configured to generate flow of air, a lower body providing an internal space in which the fan is installed, and having a suction hole through which air passes, an upper body positioned over the lower body and providing an internal space in which air discharged from the fan flows, a damper positioned behind the upper body, and a discharge port formed between an end of the upper body and an end of the damper, in which the upper body includes an opening formed at a rear end of the upper body and communicating with the internal space of the upper body, and the damper opens and closes the discharge port while moving in a front-rear direction behind the opening.