Hammer Drill Dust Collection Exhaust Routing for Tool Cooling
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Solution Overview
Problem
Existing electric power tool dust collection systems inefficiently utilize exhaust air after dust collection, leading to potential overheating and reduced tool lifespan.
Innovation Solution
Incorporating exhaust flow paths in both the electric power tool and dust collection device to direct exhaust air to high-temperature areas, such as the output portion of a hammer drill, for cooling purposes, while also utilizing these paths as a cooling air flow for the motor.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If exhaust air is discharged directly after dust collection, then the dust collection system operates simply, but the electric power tool overheats and lifespan is reduced
Solution Approach 1:
The exhaust flow path is designed to serve dual functions: it guides exhaust air from the dust collection device and simultaneously directs it to cool high-temperature portions of the electric power tool. This multi-functional design extends tool lifespan through passive cooling without adding separate cooling systems, resolving the contradiction between reliability improvement and device complexity.
2Duration of action of stationary object
If exhaust air is used for cooling, then tool lifespan is extended, but the exhaust flow path becomes more complex
Solution Approach 1:
The exhaust flow path structure merges the dust collection exhaust guidance function with the tool cooling function into a single integrated system. By combining these functions in one flow path rather than creating separate systems, the design extends operational duration while minimizing the increase in structural complexity.
3Volume of moving object
If the exhaust flow path is integrated with the cooling air flow path, then the system becomes more compact, but the flow path configuration becomes more complex
Solution Approach 1:
The exhaust flow path is nested within or integrated with the existing cooling air flow path structure of the electric power tool. By utilizing the existing internal spaces and flow channels, the design achieves compact integration without requiring additional external components, thus reducing overall system volume while keeping the added complexity manageable.
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 extends the life of the electric power tool by utilizing exhaust air for cooling, improving anti-vibration and compactness of the system, and enhancing dust collection efficiency.
Implementation Method 1
a dust collection fan rotated by drive of the dust collection motor to generate a sucking force in the suction portion
Implementation Method 2
exhaust flow paths respectively formed in the electric power tool and the dust collection device to lead exhaust that has passed through the dust collection portion to a predetermined high-temperature portion of the electric power tool
Data Source
AI summary
An electric power tool dust collection system includes: a hammer drill, to which a dust suction bit is mounted; a dust collection device mounted to the hammer drill and including a suction portion (introduction port), a dust collection motor, a dust collection fan rotated by drive of the dust collection motor to generate a sucking force in the introduction port, and a dust collection portion (dust box) that stores powder dust suctioned from the introduction port; and exhaust flow paths (exhaust flow path and tubular flow path) respectively formed in the hammer drill and the dust collection device to lead exhaust that has passed through the dust box to a high-temperature portion (output portion) of the hammer drill.