Inflator Motor Cooling via Segmented Airflow Channels
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Solution Overview
Problem
Conventional inflators suffer from poor heat dissipation in the motor housing, leading to reduced performance and potential damage due to heat accumulation, especially when operating at higher speeds for emergency tire repairs.
Innovation Solution
The inflator design includes upper and lower airflow-guiding members in the box that direct the air current generated by the cooling fan to quickly enter and exit the motor housing through specific openings and channels, effectively dissipating heat and preventing accumulation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the motor operates at higher speed for emergency tire repair, then the repair speed is improved, but heat accumulation in the motor housing increases
Solution Approach 1:
The box is divided into distinct functional zones: a motor housing compartment isolated from the main box interior, with separate airflow channels for cooling. This segmentation allows the motor to be thermally isolated from the rest of the device while maintaining overall compactness.
Solution Approach 2:
A cooling fan is introduced as an intermediary component between the motor housing and the external environment. The fan actively circulates air through dedicated cooling channels, serving as a heat transfer mediator that removes excess heat from the motor during high-speed operation.
2Stability of the object's composition
If the box is designed to accommodate the compressor unit with partitioning walls, then the structural stability is improved, but heat dissipation from the motor is reduced
Solution Approach 1:
The box structure is segmented into a motor housing compartment and the main compressor unit area, separated by partitioning walls. This segmentation provides structural stability while simultaneously creating thermal isolation, preventing heat from the motor from accumulating in the main box.
Solution Approach 2:
The partitioning walls are designed with differentiated thermal properties: they provide structural support while incorporating localized cooling channels and airflow paths specifically in the motor housing area. This local quality adjustment allows the walls to serve dual purposes: structural stability and heat dissipation.
3Reliability
If the motor housing is isolated in the box, then the motor performance is improved, but the device complexity increases
Solution Approach 1:
The partitioning walls and box structure serve multiple functions simultaneously: they provide structural support, thermal isolation for the motor, and guide airflow for cooling. By making the structure multi-functional, the design achieves motor isolation and performance improvement without proportionally increasing 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
This design enhances the motor's performance and service life by maintaining optimal operating temperatures and preventing damage from heat buildup, ensuring reliable operation even under high-speed conditions.
Implementation Method 1
a cooling fan (7) fitted at one end of the rotating shaft (60), so that the air current generated by the cooling fan (7) can quickly enter the motor's housing (61) via two opposite openings (621, 622) of the motor's housing (61)
Data Source
AI summary
An inflator includes a box and a compressor unit installed in the box. The box is composed of a cover and a base, which are respectively provided with upper and lower airflow-guiding members, which can quickly guide the air current generated by a cooling fan of the compressor unit to enter the motor's housing via two openings of the housing and to flow out of the motor's housing via downstream through holes of the housing, thus dissipating the heat generated by a rotor assembly in the motor, so that heat is not easy to accumulate in the motor, so that maximum power output of the motor can be achieved, and the performance and service life of the motor can be increased.