Suction gripper
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Solution Overview
Problem
Suction devices with compact designs face cooling challenges due to limited surface area for cooling, especially when the suction flow is insufficient, which can lead to critical cooling issues for the suction turbine and electrical components.
Innovation Solution
Incorporating a cooling air duct system with separate cooling air channels that have permanently open or pressure-dependent inflow openings, allowing cooling air to flow directly to the suction turbine and electrical components, even when the suction inlet flow is minimal, ensuring constant cooling.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If the suction device is designed with a compact stackable container structure, then the device size and space requirements are reduced, but the housing surfaces available for cooling are limited, leading to insufficient cooling of the suction turbine
Solution Approach 1:
The patent divides the air intake function into two separate systems: a suction inlet for dust-laden air and a cooling air inlet for cool air. This segmentation allows the cooling function to be independent from the suction function, enabling adequate cooling even in compact designs where traditional cooling surfaces are limited.
Solution Approach 2:
The patent introduces a separate cooling air duct as an intermediary pathway that delivers cool air directly to the suction turbine inlet. This intermediary system bypasses the limitation of housing surface area by creating a dedicated cooling channel that does not rely on external cooling surfaces.
2Device complexity
If the suction flow is used for cooling the suction turbine, then the cooling function is integrated into the existing flow path, but when suction flow is insufficient, cooling becomes critical
Solution Approach 1:
The patent prepares cooling air in advance through a separate inlet that draws in ambient cool air, independent of the suction flow conditions. This preliminary cooling air supply ensures that cooling is already prepared and available whenever needed, regardless of whether the suction flow is sufficient or not.
Solution Approach 2:
The patent changes the source and characteristics of the cooling air from relying on suction flow parameters to using separate ambient air intake. This parameter change decouples the cooling air supply from the suction flow rate, ensuring consistent cooling performance across different operating conditions.
3Reliability
If a separate cooling air duct with permanently open inlet is provided, then adequate cooling air is always available for the suction turbine, but the device complexity increases
Solution Approach 1:
The patent merges the cooling air duct with the existing housing structure and integrates it with the suction turbine inlet. By combining the cooling function with existing structural elements rather than adding completely separate components, the increase in device complexity is minimized while still achieving reliable cooling.
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 solution ensures adequate cooling of the suction turbine and electrical components, maintaining their performance and longevity even under conditions of low suction flow, and effectively manages heat dissipation within the compact device.
Implementation Method 1
a cooling air duct which has a duct inlet opening via which cooling air from an environment of the suction device can flow past the filter element to the suction turbine
Data Source
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Figure 7~9
AI summary
The invention relates to a suction device with a suction device housing (20) in which a suction turbine (11) is arranged for generating a suction flow (S), wherein the suction turbine (11) has a suction turbine inlet opening (11A) through which the suction flow (S) can flow into the suction turbine (11), and at least one suction turbine outlet opening (11B) through which the suction flow (S) can flow out of the suction turbine (11), wherein the suction device housing (20) has a suction inlet (12) for admitting the suction flow (S) and a dust collection chamber (21) for collecting dust contained in the suction flow (S), wherein a filter element (13) for retaining dust in the dust collection chamber (21) is arranged between the dust collection chamber (21) and a suction turbine inlet opening (11A) of the suction turbine (11).The suction turbine inlet opening (11A) of the suction turbine (11) is connected to at least one cooling air duct (99, 100, 101) which has a duct inlet opening (97A, 98A, 102) through which cooling air (KL) from an environment of the suction device (10) can flow past the filter element (13) to the suction turbine (11).