Vacuum Cleaner Nozzle with Separate Suction and Cooling Flow Paths
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional vacuum cleaner nozzles suffer from reduced suction power due to dust-contaminated air mixing with air used for cooling the drive motor, leading to heat generation and performance loss.
Innovation Solution
A cleaner nozzle design with separate suction and cooling paths, featuring a suction flow path to guide air for dust collection and a cooling flow path to cool the drive motor, using a fan to manage airflow, and a sealing portion to isolate these paths.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a single flow path is used for both dust suction and motor cooling, then the device complexity is reduced, but dust-contaminated air mixes with cooling air causing heat generation and suction power loss
Solution Approach 1:
The single flow path is divided into two separate flow paths: a dust suction flow path and a motor cooling flow path. The dust suction flow path guides clean air from the suction port through the dust collection chamber to the exhaust port, while the motor cooling flow path guides air from a separate inlet through the drive motor for cooling. This segmentation prevents dust-contaminated air from mixing with cooling air, maintaining suction power while managing motor heat.
Solution Approach 2:
The motor cooling function is extracted from the dust suction flow path and implemented as a separate cooling flow path with its own inlet and outlet. This allows the cooling air to be drawn from a clean source and discharged separately, preventing it from becoming contaminated with dust and maintaining its cooling effectiveness.
2Reliability
If separate suction and cooling paths are implemented, then suction power is maintained and motor cooling is effective, but device complexity increases
Solution Approach 1:
The dust suction flow path and motor cooling flow path are merged at the exhaust stage, where both flow paths discharge their air through the same exhaust port. This merging approach reduces the number of separate components needed while maintaining the benefits of separate cooling and suction paths throughout the majority of the system.
3Device complexity
If cooling air is drawn from the suction port, then the structure is simplified, but dust-contaminated cooling air reduces cooling effectiveness
Solution Approach 1:
The cooling air inlet is extracted from the suction port and positioned as a separate inlet on the nozzle housing. This separate inlet draws clean air specifically for motor cooling purposes, preventing dust contamination and ensuring effective heat dissipation from the drive motor.
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
Prevents heat generation in the drive motor, maintains suction power by segregating dust and cooling airflows, reducing performance loss.
Implementation Method 1
a cooling flow path disposed between the agitator and the drive unit and configured to guide air drawn through a second suction hole of the nozzle housing to a second discharge hole of the nozzle housing
Implementation Method 2
A fan may be disposed on the cooling flow path and configured to flow air flowing from the second suction hole to the second discharge hole
Implementation Method 3
a sealing portion disposed between the suction flow path and the cooling flow path and configured to seal between the suction flow path and the cooling flow path
Data Source
Figure 1
Figure 2
Figure 3
AI summary
The embodiments of the present disclosure may relate to a cleaner nozzle including a nozzle housing; an agitator rotatably disposed within the nozzle housing; a drive unit disposed within the agitator and configured to provide rotational force to the agitator; a suction flow path disposed between the nozzle housing and the agitator and configured to guide air drawn through a first suction hole of the nozzle housing to a first discharge hole of the nozzle housing; and a cooling flow path disposed between the agitator and the driving unit and configured to guide air drawn through a second suction hole of the nozzle housing to a second discharge hole of the nozzle housing.