Building Cavity Insulation Filling Device with Streamlined Flow Path
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing filling devices for applying insulation in building cavities operate at a relatively low filling speed, limiting efficiency, especially at different drilling diameters.
Innovation Solution
The filling device features a streamlined design with a round cross-section mixing chamber and mouth, a tapered transition part, and a venturi tube to improve airflow and bead/adhesive streaming, along with angled bead supply and perpendicular adhesive supply to enhance filling speed and density.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If the filling device uses conventional design with non-streamlined airflow path, then the device structure is simpler, but the filling speed is relatively low
Solution Approach 1:
The mixing chamber and mouth are designed with round cross-sections, and the transition part is a tapered solid of revolution with smooth connections. This curved geometry eliminates sharp corners and abrupt transitions, creating streamlined airflow paths that reduce turbulence and resistance, thereby increasing filling speed without adding complex components
Solution Approach 2:
The compressed air connector is repositioned to be provided opposite to the mouth opening, changing the airflow direction parameter to achieve rectilinear (straight-line) flow through the device. This parameter change optimizes the airflow path from the compressed air supply through the mixing chamber to the mouth, reducing resistance and improving filling speed
2Productivity
If the filling device uses stepped transition between mixing chamber and mouth, then manufacturing is easier, but the streaming of insulation beads and adhesive encounters resistance
Solution Approach 1:
The transition part is designed as a tapered solid of revolution with smooth connections to both the mixing chamber and the mouth, eliminating stepped transitions. This curved geometry allows insulation beads and adhesive to flow smoothly without encountering resistance at transition zones, improving productivity while the tapering design remains manufacturable using standard machining processes
3Productivity
If the compressed air connector is positioned to allow non-rectilinear airflow, then device assembly is simpler, but air stream resistance is higher
Solution Approach 1:
The compressed air connector is positioned opposite to the mouth opening, changing the spatial parameter of the connector to achieve rectilinear airflow. This positioning creates a straight-line flow path from the compressed air supply through the mixing chamber to the mouth, minimizing air stream resistance and maximizing filling speed. The connector positioning follows the central axis of the round mixing chamber, simplifying the alignment and assembly process
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
The device achieves increased filling speed and maintains insulation density by optimizing airflow and bead/adhesive flow, measured in litres per second, with specific dimensions of components contributing to the improved performance.
Implementation Method 1
The injector body also includes a carrier fluid inlet that is located downstream of the insulant material and binding agent inlets. The carrier fluid inlet, in use, generates a low pressure region in an interior of the injector body to draw insulant material and binding agent into the injector body.
Implementation Method 2
the compressed air connector is to be provided opposite to the mouth opening, such that the supplied compressed air passes the filling device in rectilinear. This means that the supplied air, so to speak, streams in a straight line from entry into the filling device up to the mouth opening. This reduces the resistance of the air stream.
Implementation Method 3
the transition part should end tapered from the mixing chamber to the mouth. This means that there is no stepwise transition present in the filling device, for example between the mixing chamber and the mouth. Due to this, the mixed insulation beads and the adhesive are able to flow smoothly from the mixing chamber to the mouth opening. This reduces the resistance that the mixed insulation beads and the adhesive encounter during transport between the mixing chamber and the mouth.
Data Source
Figure 1
Figure 2a~3
AI summary
Filling device for applying insulation in a cavity wall of a building, wherein the filling device comprises: - a mixing chamber for mixing insulation beads with adhesive; - a mouth having a mouth opening for, with the aid of compressed air, dispensing a mixture of insulation beads and adhesive in the cavity wall of the building; - a transition part which connects the mixing chamber with the mouth; - a beads connector arranged for connecting a beads-supply line for supplying insulation beads to the mixing chamber; - an adhesive connector arranged for connecting an adhesive-supply line for supplying adhesive to the mixing chamber; - a compressed air connector provided opposite to the mouth opening, and arranged for connecting a compressed air-supply line for supplying compressed air to the filling device in the direction of the mouth opening, wherein a cross section of the mixing chamber and the mouth, in a plane parallel to a mouth openings plane defined by the mouth opening, is substantially round, and wherein the transition part a solid of revolution is which ends tapered from the mixing chamber to the mouth, and wherein the transition part smoothly connects to the mixing chamber