Multipurpose vacuum cleaner
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Solution Overview
Problem
Existing multi-purpose vacuum cleaners used with electrically driven machine tools require separate on/off switching and lack efficient power management, limiting mobility and convenience, especially in environments without AC power sources.
Innovation Solution
A tool system where the multi-purpose vacuum cleaner's power supply is integrated with the machine tool's power supply, allowing simultaneous operation and automatic switching based on the machine tool's state, with optional battery charging during use, and featuring sensors for activation control.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If separate on/off switches are provided for both machine tool and vacuum cleaner, then each device can be independently controlled, but the user must operate two separate switches reducing convenience
Solution Approach 1:
The patent combines the switching control of the vacuum cleaner with the machine tool's switch. The vacuum cleaner's electric drive is activated through the machine tool's on/off switch, merging two separate control functions into one. This eliminates the need for a separate vacuum cleaner switch, allowing the user to control both devices with a single action.
Solution Approach 2:
The machine tool's switch is given a dual function: it controls both the machine tool and the vacuum cleaner. This multi-functional approach allows one switch to perform multiple control tasks, simplifying the user interface and improving operational convenience without adding complexity.
2Adaptability or versatility
If the vacuum cleaner is powered by a rechargeable battery, then mobility and independence from AC sources are improved, but power supply capacity may be limited
Solution Approach 1:
The power supply system is designed to be dynamic, automatically switching between battery power and AC power based on availability and demand. The system can transition from battery-only operation to hybrid operation when AC power is available, optimizing power supply capacity while maintaining mobility when needed.
Solution Approach 2:
The system changes its power supply parameters dynamically - operating in battery mode for mobility and AC mode for sustained high-power operation. This parameter change allows the vacuum cleaner to adapt to different operational requirements, achieving both mobility and adequate power capacity.
3Ease of manufacture
If the battery is charged only when the motor is not running, then charging is simple, but charging time and loss of operational time are increased
Solution Approach 1:
The charging system operates continuously during AC power availability rather than only when the motor is off. The battery charges in parallel with motor operation, maintaining continuous useful action - the motor runs while the battery simultaneously recharges, eliminating idle charging time and reducing operational downtime.
Solution Approach 2:
The battery is recharged during periods when AC power is available, preparing it in advance for future battery-only operation. This preliminary charging action ensures the battery is ready for mobile use without requiring dedicated charging time during operation, reducing overall loss of operational time.
4Ease of operation
If the vacuum cleaner activates automatically with the machine tool, then user convenience is improved, but energy consumption increases when the machine tool is idle
Solution Approach 1:
The vacuum cleaner's activation is linked to feedback from the machine tool's operational state. The system monitors the machine tool's switch status and automatically activates or deactivates the vacuum cleaner accordingly. This feedback mechanism ensures the vacuum cleaner operates only when needed, avoiding unnecessary energy consumption during idle periods while maintaining user convenience.
Data Source
Figure 1~2
Figure 3
AI summary
The present invention relates to a multi-purpose vacuum cleaner (18), in particular for use with an electrically driven machine tool (12), which has an electric drive (22) for driving a fan unit and a power supply for supplying electric current to the electric drive of the multi-purpose vacuum cleaner (18). The power supply comprises an associated electrical cable that allows a user to connect the power supply to an AC power source as needed, and at least one rechargeable battery connectable to the power supply that is capable of supplying the power supply with DC current, so that a user can also use the multi-purpose vacuum cleaner (18) when the power supply is not connected to an AC power source via the electrical cable.Furthermore, the power supply has at least one electrical connection via which a driven machine tool can be connected to the power supply by means of a cable, so that the power supply is able to supply the electrical current to both the electric drive of the multi-purpose vacuum cleaner (18) and the electric drive of the connected machine tool (12).