Central vacuum cleaner with modular electronic control unit
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Solution Overview
Problem
Central vacuum cleaners face challenges in reducing operating noise, simplifying manufacturing and servicing, and improving operating performance, with existing systems often requiring complex sound-reducing mechanisms and difficult component access.
Innovation Solution
The design incorporates a central vacuum cleaner with a removable electronic control unit, a suction motor mounted to a lower motor housing shell for noise reduction, and a dirt receptacle system that includes a filter bag and cyclonic separator, along with electric bridges for efficient power transmission, allowing for easier assembly and maintenance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If the suction motor is mounted inside the outer shell with complex sound-reducing mechanisms, then operating noise is reduced, but device complexity increases
Solution Approach 1:
The electronic control unit is extracted as a separate, removable module from the main vacuum cleaner body. This allows the control unit to be easily removed for servicing or replacement without disassembling the outer shell or accessing internal components, thereby reducing the complexity of the overall system while maintaining functional integrity.
Solution Approach 2:
The vacuum cleaner system is segmented into distinct modular components: the main body with suction motor, the removable electronic control unit, and the dirt receptacle. This segmentation allows each component to be optimized independently and serviced separately, reducing overall system complexity while maintaining noise control through focused design of each module.
2Manufacturing precision
If the electronic control unit is permanently integrated into the outer shell, then manufacturing precision is improved, but ease of repair deteriorates
Solution Approach 1:
The electronic control unit transitions from a fixed, permanently integrated state to a dynamic, removable state. The control unit can be easily inserted and removed from the outer shell without tools or complex disassembly, enabling quick servicing and replacement while maintaining a precise, integrated appearance during normal operation.
Solution Approach 2:
The electronic control unit is pre-configured with connection interfaces (electrical connectors, alignment features) that enable tool-free attachment and detachment. This preliminary preparation of connection mechanisms allows the control unit to be easily replaced during servicing without requiring disassembly of the outer shell or complex alignment procedures.
3Ease of repair
If the electronic control unit is made removable without disassembling the outer shell, then ease of repair is improved, but manufacturing precision may deteriorate
Solution Approach 1:
The removable electronic control unit design serves multiple functions: it maintains a precise, integrated appearance during normal operation, enables easy removal for servicing without tools, and allows for quick replacement. The universal connection interface ensures consistent, precise alignment during both installation and removal operations.
Solution Approach 2:
Connection interfaces (electrical connectors, alignment ribs, snap-fit mechanisms) act as intermediaries between the electronic control unit and the outer shell. These intermediaries maintain precise alignment and electrical connectivity during operation while enabling easy, tool-free removal when servicing is required, bridging the gap between integrated appearance and removable functionality.
4Object-affected harmful factors
If complex sound-reducing systems are implemented, then operating noise is reduced, but ease of manufacture deteriorates
Solution Approach 1:
The vacuum cleaner is segmented into independent modular components (suction motor assembly, electronic control unit, dirt receptacle) that can be manufactured separately using standardized processes. This segmentation simplifies manufacturing by allowing each module to be produced independently and assembled through straightforward connection interfaces, reducing overall assembly complexity while maintaining noise control.
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 configuration reduces operating noise, simplifies manufacturing and servicing, and enhances operating performance by isolating noise sources and providing easy access to components, while maintaining efficient airflow and dirt separation.
Implementation Method 1
a suction motor inside the outer shell and having a suction motor inlet in fluid communication with the suction chamber and configured to generate a flow of air from the suction chamber inlet to the suction chamber
Implementation Method 2
a dirt receptacle system that includes a filter bag and cyclonic separator
Data Source
AI summary
A central vacuum cleaner having an outer shell, a suction chamber located inside the outer shell, a suction chamber inlet comprising a fluid passage through the outer shell into the suction chamber, a suction motor inside the outer shell and having a suction motor inlet in fluid communication with the suction chamber and configured to generate a flow of air from the suction chamber inlet to the suction chamber and into the suction motor inlet, an electronic control unit receiver, and an electronic control unit configured to selectively operatively connect to the electronic control unit receiver, and when so connected, control operation of the suction motor, the electronic control unit being selectively removable from the electronic control unit receiver and the suction motor without disassembling the outer shell.