Filter cleaning for vacuum cleaner with external fan
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Solution Overview
Problem
Existing dirt vacuum cleaners with internal blowers are limited by space, restricting suction power, generating excessive noise, and allowing only single ring filters, which cannot be easily replaced or cleaned separately, limiting their performance and usability.
Innovation Solution
The vacuum cleaner is designed with one or more external blowers connected via hoses, allowing separate operation and modular replacement, enabling higher suction power, reduced noise, and the use of multiple filter cartridges for improved cleaning and extended service life.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If the blower is arranged in the housing of the dirt vacuum cleaner, then the structure is compact, but the blower output is severely limited and suction power cannot be significantly increased
Solution Approach 1:
The system is divided into two independent modules: a dirt vacuum cleaner unit and an external blower unit. The blower is separated from the vacuum cleaner housing and positioned externally, allowing each component to be optimized independently. This segmentation enables the blower to be sized for high power output without being constrained by the limited internal space of the vacuum cleaner housing.
Solution Approach 2:
A hose connection serves as an intermediary element between the external blower and the dirt vacuum cleaner housing. This flexible connection allows the blower to be positioned remotely while maintaining functional integration, enabling high power output without requiring internal installation space.
2Adaptability or versatility
If the blower is integrated into the dirt vacuum cleaner, then the system is unified, but the vacuum cleaner cannot be operated separately from its fan and cannot serve as a pre-separator
Solution Approach 1:
The system is divided into independent functional modules that can operate separately or together. The dirt vacuum cleaner can function independently for basic vacuuming tasks, while the external blower can be added when higher suction power or pre-separation functionality is required. This modular segmentation provides operational flexibility without requiring complex integrated controls.
Solution Approach 2:
The external blower module serves multiple functions: it can operate independently to provide high-power suction for heavy-duty tasks, or it can be connected to the dirt vacuum cleaner to enhance its performance. The system can adapt to different operational requirements by simply connecting or disconnecting the blower module, providing universal functionality across multiple use cases.
3Power
If the fan with high-speed motor is arranged in the dirt-cleaner housing, then high suction power is achieved, but an undesirably high level of noise is generated
Solution Approach 1:
The high-speed motor and blower, which are the primary noise sources, are extracted from the dirt vacuum cleaner housing and positioned externally. This separation removes the harmful noise generation from the user environment while maintaining the beneficial high suction power function. The vacuum cleaner housing becomes quieter while the external blower handles the noisy high-power operation.
4Ease of operation
If only a single ring filter divided into two filter halves is used, then the structure is simple, but multiple different filters cannot be used and each filter must be cleaned separately
Solution Approach 1:
The filter system is segmented into multiple independent filter cartridges rather than a single integrated ring filter. Each cartridge can be independently removed, cleaned, or replaced without affecting the other filters. This segmentation simplifies maintenance operations while the modular configuration allows for greater system complexity in terms of filter variety and arrangement.
Solution Approach 2:
The filter cartridges are designed to be easily removable and replaceable. When a filter cartridge becomes dirty, it can be quickly detached from the housing, cleaned or replaced, and reinstalled without disassembling the entire vacuum cleaner or affecting other filters. This design significantly reduces maintenance time and effort.
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 allows for significantly increased suction capacity, reduced noise, and the ability to use more powerful fans, while enabling the use of multiple filter cartridges for easier maintenance and extended service life, addressing the limitations of internal blower systems.
Implementation Method 1
a pressure difference is applied across the filter by a fan, in order to move air from a raw air side of the filter to a clean air side of the filter
Implementation Method 2
the air flow is reversed in the respective filter and the dirt particles adhering to the raw air side are now cleaned off
Data Source
AI summary
A dirt suction device comprises at least two filters (3, 4) which are arranged on/in a dirt suction device housing (1), are affected by an air stream from a fan (21), and include valves (26-34) for separately controlling the cleaning action of the filter, wherein during normal operation, the dirt-laden air stream passes through at least one filter from the untreated air side to the clean air side, and at least one of the valves is associated with each of the at least two filters, said valve switching over in the cleaning position such that the air stream in the filter is reversed and the dirt particles adhering to the untreated air side are removed, wherein the fan of the dirt suction device is arranged outside the dirt suction device housing.