Grinding Tool Airflow Passage for Uniform Casing Cooling
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Solution Overview
Problem
Conventional grinding machine tools suffer from uneven heat dissipation, leading to thermal energy accumulation on motors and casings, which affects user safety and efficiency due to inadequate airflow circulation and interference between external and dust-containing airflows.
Innovation Solution
A grinding machine tool design with a casing divided into a head and body, featuring an air inlet and outlet, a motor cover with a gap, and an airflow generating member that generates dual heat dissipation airflows to circulate and dissipate heat from both sides of the motor and circuit board, while preventing dust entry.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If a fan is used to generate wind current for heat dissipation, then heat dissipation on one side of the motor is improved, but heat dissipation becomes uneven and thermal energy accumulates on the motor side not facing the fan
Solution Approach 1:
The patent divides the heat dissipation function into two independent airflow paths: one for the motor side facing the fan and another for the motor side not facing the fan. This segmentation allows each side to be cooled independently, resolving the uneven heat dissipation problem while maintaining effective cooling.
2Object-affected harmful factors
If the casing is sealed to prevent dust entry, then dust accumulation is reduced, but heat dissipation is blocked and thermal energy accumulates inside the machine tool
Solution Approach 1:
The patent separates the dust exhaust function from the heat dissipation function by creating independent airflow paths. The dust exhaust path remains sealed to prevent dust entry, while the heat dissipation path allows controlled airflow through the motor area. This segmentation enables both dust prevention and effective heat dissipation simultaneously.
3Temperature
If external air is introduced to dissipate heat, then heat dissipation is improved, but dust-containing airflow interferes with external air and causes turbulence
Solution Approach 1:
The patent creates separate airflow channels: one for external air intake specifically for heat dissipation, and another for dust exhaust. By segmenting these functions into distinct spatial paths, the external air and dust-containing airflow no longer interfere with each other, eliminating turbulence while maintaining both heat dissipation and dust removal effectiveness.
4Volume of moving object
If the motor is positioned close to the casing for compact design, then space utilization is improved, but thermal energy transfers from the motor to the casing
Solution Approach 1:
The patent introduces a gap between the motor and the casing, filled with heat dissipation airflow passage. This gap acts as an intermediary that allows controlled airflow to pass through, carrying thermal energy away from the motor to the external environment. The gap prevents direct thermal contact between the motor and casing while maintaining compact overall design.
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
Effectively reduces casing temperature by enhancing airflow circulation, preventing dust accumulation, and ensuring uniform heat dissipation, thereby improving user safety and tool performance.
Implementation Method 1
When the airflow generating member rotates, inside the casing the airflow generating member generates a first heat dissipation airflow that passes through the airflow passage and dissipates heat of the circuit board and the head of the casing
Implementation Method 2
a second heat dissipation airflow that dissipates heat on a side of the motor facing the airflow generating member
Implementation Method 3
there is a gap between the motor cover and the at least two casing parts, so that inside the casing is formed with an airflow passage that enters from the air inlet and discharges from the air outlet
Data Source
AI summary
A grinding machine tool for reducing hotness of a casing, includes a casing and a drive assembly. The casing is divided into a head and a body; includes casing parts; includes an air inlet provided on the body and an air outlet provided on a side of the head; and forms a motor cover on the head, and the motor cover does not contact the casing parts to form an airflow passage in the casing. The drive assembly includes a circuit board, a motor placed into the motor cover, and an airflow generating member rotating synchronously with the motor. When the airflow generating member rotates, it generates a first heat dissipation airflow passing through the airflow passage and dissipating heat of the circuit board and the head, and a second heat dissipation airflow dissipating heat on a side of the motor facing the airflow generating member.