Handheld Blower Stationary High-Pressure Unit
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Solution Overview
Problem
Conventional handheld blower devices often result in dull surfaces due to inadequate air pressure and flow rate, leading to incomplete drying and atomization of water droplets.
Innovation Solution
A handheld blower device with a high-pressure blower configured as a stationary unit connected via a flexible hose to a manually movable flat nozzle, providing compressed air with a flow rate of 50 to 300 m/s and a volume flow of 200 to 1000 m3/h, optimized by a side channel compressor and a flat nozzle design with a suitable exit surface area.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Weight of moving object
If a low-pressure blower or medium-pressure blower with compression below 10 mbar is used, then the device is lighter and more portable, but the drying result is dull and incomplete with atomization of water droplets
Solution Approach 1:
The system is divided into two separate components: a stationary high-pressure blower unit and a mobile flat nozzle device. This segmentation allows the heavy pressure-generating component to remain fixed while the lightweight application component remains portable, resolving the contradiction between portability and drying quality.
Solution Approach 2:
A flexible hose serves as an intermediary connection between the stationary high-pressure blower and the mobile flat nozzle device, enabling the transmission of compressed air while maintaining system separation. This allows the user to have both high pressure capability and mobile operation.
2Reliability
If a high-pressure blower with compression above 150 mbar is used, then complete drying without atomization is achieved, but the pressure generator becomes heavy and clumsy
Solution Approach 1:
The system separates the heavy high-pressure blower into a stationary unit, leaving only the lightweight flat nozzle device for mobile operation. This resolves the contradiction by allowing high pressure generation without requiring the mobile component to be heavy.
Solution Approach 2:
The solution moves the weight issue from the mobile dimension to the stationary dimension. The high-pressure blower remains in one location while the flat nozzle device can be freely moved, effectively removing the weight constraint from the portable portion of the system.
3Ease of operation
If the flat nozzle device is made manually movable and easily orientable, then individual orientation and maneuverability are improved, but the device cannot provide sufficient air pressure and flow rate
Solution Approach 1:
The system divides functionality between a stationary power unit (high-pressure blower) and a mobile application unit (flat nozzle device). This allows the mobile unit to be lightweight and maneuverable while the stationary unit provides the necessary power.
Solution Approach 2:
The system uses pneumatic transmission through a flexible hose to deliver high-pressure compressed air from the stationary blower to the mobile nozzle device, enabling the mobile unit to access high pressure without containing the heavy pressure-generating components.
4Power
If the high-pressure blower is configured as a stationary unit, then sufficient compressed air with flow rate of 200-1000 m3/h is provided, but the conveying device becomes more complex with separate housing and flexible connection
Solution Approach 1:
A flexible hose acts as an intermediary conveying element between the stationary blower and mobile nozzle, simplifying the connection while allowing independent positioning of each component. This flexible connection handles the complexity of power transmission across separated locations.
Solution Approach 2:
The flexible hose serves multiple functions: it conveys compressed air, allows positional adjustment, and connects two separate housings. This multi-functionality reduces the need for additional complex components to manage the stationary-mobile interface.
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
Achieves rapid and complete drying with minimal atomization, ensuring a smooth, non-dull surface finish and allowing for effective removal of water and dust particles.
Implementation Method 1
The high-pressure blower pressurizes the air to a high pressure and conveys it to the flat nozzle device
Implementation Method 2
The surface is pneumatically dried by compressed air, or air under pressure, blowing away from the surface the humidity or moisture present on the surface
Data Source
AI summary
The invention relates to a handheld blower device for the manual pneumatic drying of surfaces by a user of the handheld blower device, comprising a flat nozzle device for ejecting compressed air from the handheld blower device onto the surface to be dried, a handle region, in particular a handle, for manually gripping and guiding the flat nozzle device over the surface to be dried, and a conveying device for conveying the compressed air to the flat nozzle device, wherein the flat nozzle device comprises a flat nozzle, and the conveying device is configured with a stationarily arranged, in particular fixedly arranged, high-pressure blower.