Blower Door Assembly for Airflow Control
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Solution Overview
Problem
Conventional blowers face challenges in effectively controlling blowing intensity and direction step-by-step due to the need for multiple motors and complex mechanical movements, leading to inefficiencies and excessive power consumption.
Innovation Solution
A blower design featuring a single motor system with a door assembly that includes sequentially rotating doors to control airflow intensity and direction by adjusting the rotation angle of doors, utilizing the Coanda effect for airflow manipulation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If multiple motors are used to control blowing intensity and direction, then control precision is improved, but device complexity and power consumption increase
Solution Approach 1:
The patent combines multiple control functions (blowing intensity control and blowing direction control) into a single motor system. The single motor rotates the door assembly, which simultaneously adjusts both the opening degree of air outlets (intensity control) and the orientation of air outlets (direction control), thereby reducing device complexity while maintaining control precision
Solution Approach 2:
The single motor is designed to perform multiple functions: it controls both the intensity and direction of airflow through the door assembly's rotational movement. This multi-functional design eliminates the need for separate motors for each control function, reducing overall device complexity
2Measurement precision
If multiple motors are used to control blowing intensity and direction, then control precision is improved, but power consumption increases
Solution Approach 1:
The patent merges multiple motor functions into a single motor system that controls both blowing intensity and direction through the door assembly. This consolidation reduces the total power consumption compared to using multiple separate motors, while maintaining the same level of control precision
3Adaptability or versatility
If the blowing device is moved or rotated to control blowing parameters, then control flexibility is improved, but device complexity increases
Solution Approach 1:
The patent segments the airflow control function from the main blower body by introducing a separate door assembly. This door assembly can be rotated independently to control blowing direction and intensity, providing control flexibility without requiring movement of the entire blower device, thereby reducing overall device complexity
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
Enables precise step-by-step control of blowing intensity and direction with reduced power consumption by using a single motor to rotate doors, enhancing airflow management and user comfort.
Implementation Method 1
the present disclosure relates to a blower capable of blowing air by using a coanda effect
Data Source
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AI summary
A blower is provided. The blower according to the present disclosure includes: a fan (50) causing airflow; a lower body (110) forming an inner space in which the fan is installed, and having a suction hole (112) through which air passes; an upper body positioned above the lower body and including a first upper body (120) forming a first inner space communicating with the inner space of the lower body, and a second upper body (130) forming a second inner space communicating with the inner space of the lower body and spaced apart from the first upper body; a space (109) formed between the first upper body and the second upper body and opened in the front-rear direction; a first opening (SL-0) formed through a first boundary surface of the first upper body facing the space; a second opening (SR-0) formed through a second boundary surface of the second upper body facing the space; and a door assembly (300) including a first door (301) installed at the first upper body and opening or closing the first opening, and a second door (302) installed at the second upper body and opening or closing the second opening.