Electric Tool Air Duct Cooling for Connection Unit Heat
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Solution Overview
Problem
Existing electric tools face challenges in efficiently dissipating heat generated during operation, particularly at the connection units and power control units, which can affect their performance and functionality.
Innovation Solution
The electric tool incorporates a duct system defined by the connection unit and power control unit, utilizing an air flow to directly dissipate heat from these units, with features like a fan unit, ducts formed by connection blocks, and cooling elements to enhance heat dissipation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If a cooling system is added to dissipate heat from the connection unit, then heat dissipation effectiveness is improved, but device complexity increases
Solution Approach 1:
The connection unit is designed to simultaneously perform electrical connection and cooling functions. The connection contacts are positioned to directly expose hot surfaces to the airflow path, eliminating the need for separate cooling components and reducing overall device complexity while maintaining effective heat dissipation.
Solution Approach 2:
The connection unit serves multiple purposes: it provides electrical connection between components and simultaneously acts as a heat dissipation element. The same structural components that establish electrical connectivity also serve as heat sources that are directly cooled by the airflow, achieving multi-functionality without additional parts.
2Volume of moving object
If the tool design is made compact, then portability is improved, but heat dissipation capability deteriorates
Solution Approach 1:
The cooling system is designed with localized airflow channels that direct air flow precisely to the hottest areas of the connection unit. By concentrating cooling effort where heat generation is highest, the system achieves effective heat dissipation in a compact volume without requiring large-scale cooling structures.
Solution Approach 2:
The connection contacts are arranged in three-dimensional space to maximize exposure to airflow while minimizing overall tool volume. The vertical and horizontal positioning of connection elements creates efficient heat dissipation pathways without increasing the tool's external dimensions, allowing compact design with adequate cooling.
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 achieves targeted and efficient cooling of the drive and connection units, maintaining compact tool design while ensuring effective heat dissipation, thereby improving the tool's performance and reliability.
Implementation Method 1
a fan unit (300) for generating an air flow (LS)
Implementation Method 2
substantially dissipate heat generated in the operating state at the connection unit (200) for the drive unit (100) from the housing (400) by means of the air flow (LS)
Data Source
AI summary
An electric tool includes a drive unit for driving a tool unit in an operating state. A connection unit with at least one connection contact element transmits electrical energy from an energy supply device of the electric tool to the drive unit. A fan unit generates an air flow. A housing accommodates the drive unit, the connection unit, and the fan unit. A first air passage opening and a second air passage opening are formed on the housing. The first and second air passage openings are connected to one another with the fan unit via a duct for guiding the air flow along a flow direction. The duct is defined in sections by the connection unit and guides the air flow to dissipate heat generated at the connection unit from the housing while in the operating state. The electric tool is operable by a method.