Angle Grinder Cooling System for Heat Dissipation
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Solution Overview
Problem
Current angle grinders have complex structures leading to long assembly times and inadequate user-facilitated detachment and repair, with heat dissipation issues affecting the circuit board and overall tool performance.
Innovation Solution
The design incorporates a simplified structure with a cooling system that includes an enclosing capsule, a cooling element, a fan, and an air guiding cover to facilitate assembly and heat dissipation, featuring a brushless motor, transmission mechanism, and a circuit board assembly integrated with a cooling material for efficient heat management.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a complex structure is used in the angle grinder, then the functionality and performance can be improved, but the assembly time becomes too long and user detachment/repair is difficult
Solution Approach 1:
The angle grinder is divided into modular components including a handle assembly with motor and cooling system, a separate body assembly with circuit board, and interchangeable grinding attachments. This segmentation allows independent assembly and repair of each module, reducing overall assembly time while maintaining full functionality.
Solution Approach 2:
The cooling element is nested within the handle assembly, with the circuit board positioned to utilize the cooling airflow path. The motor is nested within the handle housing, and the grinding disc is nested within the guard assembly. This nesting reduces the number of external components and simplifies the overall structure.
2Adaptability or versatility
If the circuit board is provided with heat-generating circuit elements, then the control functionality is improved, but heat accumulation affects the use time and performance
Solution Approach 1:
A cooling element acts as an intermediary between the heat-generating circuit board and the external environment. This cooling element includes heat dissipation fins and airflow channels that facilitate heat transfer from the circuit board to the surrounding air, preventing heat accumulation while maintaining full control functionality.
3Device complexity
If no cooling system is provided, then the structure remains simple, but the heat from circuit elements cannot be dissipated in time
Solution Approach 1:
The cooling system is merged with the existing handle assembly and circuit board structure. The cooling element is integrated into the handle housing, and the airflow path is combined with the motor ventilation system. This merging provides effective heat dissipation while minimizing additional structural 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 reduces assembly time, enhances user convenience, and effectively manages heat dissipation, improving the longevity and performance of the angle grinder by ensuring the circuit board and motor operate within safe temperature ranges.
Implementation Method 1
a cooling element (40) connected fixedly with the circuit element (31), wherein the cooling element (40) comprises a connection portion (41) connected with the circuit element (31) for transmitting heat to a cooling portion (42)
Implementation Method 2
a fan (87) mounted on the motor shaft (851) for moving air through the housing (10)
Implementation Method 3
an air guiding cover (88) mounted in the housing (10) for guiding air flow through the housing (10)
Data Source
Figure 1~2
Figure 3
Figure 4
AI summary
An angle grinder (100) includes a housing (10) formed with a handle (12a), a clamping device (82) for mounting a grinding disk (92), an output shaft (84) for driving the clamping device (82) to rotate, a brushless motor (85) being provided with a motor shaft (851), a transmission mechanism (20) for transmitting power between the motor shaft (851) and the output shaft (84), and a circuit board assembly (30) for providing electricity to the brushless motor (85). The clamping device (82) is disposed outside of the housing (10) and connected with the output shaft (84). The output shaft (84) is at least partially disposed inside of the housing (10) and connected with the transmission mechanism (20). The brushless motor (85) is arranged between the transmission mechanism (20) and the circuit board assembly (30) in a direction substantially parallel to the motor shaft (851), and the motor shaft (851) is disposed along a direction substantially perpendicular to the output shaft (84).