Backpack Blower Tube Layout with Protective Ring for Impact Resistance
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Solution Overview
Problem
Existing backpack blowers face challenges in optimizing the arrangement of the carrying-side pipe section on the carrying frame and improving medium guidance, while also requiring effective impact protection for the blower components.
Innovation Solution
The carrying-side pipe section of the blower tube is arranged with a main directional component in a transverse direction of the support frame, projecting laterally beyond the frame and surrounded by a protective ring element, with the blower axis forming specific angles relative to the vertical and horizontal planes for a compact and protected design.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If the axial blower is arranged in the carrier-side tube section with the axial blower axis extending in the longitudinal direction, then the blowing device achieves compact integration with the backpack, but the axial blower tube end termination is exposed and vulnerable to damage from drops or impacts
Solution Approach 1:
A protective ring element is provided that extends in the circumferential direction around the axial blower tube end termination. This protective ring acts as a protective shell that absorbs impacts and prevents damage to the blower tube from drops or collisions, while maintaining the compact integrated design of the blowing device with the backpack.
2Ease of operation
If the axial blower tube end termination projects laterally beyond the support frame, then the blowing device achieves improved airflow direction control, but the exposed tube section becomes vulnerable to damage
Solution Approach 1:
The protective ring element provides a protective shell around the laterally projecting axial blower tube end termination. This allows the tube to extend beyond the support frame for improved airflow control while the protective ring absorbs impacts and prevents damage to the exposed section.
3Volume of moving object
If the axial blower is integrated into the backpack with the blowing tube extending past the side region, then the device achieves space efficiency, but the blowing tube lacks sufficient protection during lateral impacts
Solution Approach 1:
The protective ring element provides a protective shell around the blowing tube section that extends past the side region of the backpack. This maintains the space-efficient integrated design while adding impact protection to the exposed tube section during lateral impacts or drops.
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 a compact arrangement of the blower tube on the backpack frame, optimizing airflow and providing enhanced impact protection for the blower components.
Implementation Method 1
an axial blower (6) driven by the drive motor, which has an axial blower axis (6a) and is arranged in the carrier-side tube section (4a) of the blower tube (4)
Data Source
Figure 1~2
Figure 3~4
Figure 5~6
AI summary
2.1. The invention relates to a backpack blower comprising a backpack (1) with a support frame (1a), a blower tube (4) with a carrier-side tube section (4a) held on a rear side of the support frame (1a) and a hand-side tube section (4b) extending past a first side region (S1) of the support frame (1a), a drive motor, a power source, and an axial blower (6) driven by the drive motor, which has an axial blower axis (6a) and is arranged in the carrier-side tube section (4a) of the blower tube (4). 2.2.According to the invention, the support-side tube section (4a) of the blower tube (4) extends with a main directional component in a support transverse direction of the support frame (1a) and has an axial blower tube end termination (9) that projects laterally beyond a second side region (S2) of the support frame (1a) facing away from the first side region (S1) and/or is at least partially circumferentially surrounded by a protective ring element (10) that is connected to the support frame (1a). 2.3. Use e.g. for electric leaf blowers.