Insulation Injection Nozzle With Pointed Tip and Expandable Wings
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Solution Overview
Problem
Current insulation injection methods for building cavities are costly and time-consuming, often requiring numerous panel holes to be drilled, can lead to nozzle blockages, and struggle with injecting insulation on the correct side of pre-existing insulation, limiting the variety of insulation types and cavity configurations that can be addressed without exchanging guns or nozzles, and result in excess insulation dripping onto panel surfaces.
Innovation Solution
A building cavity insulation injection device featuring a beveled or pointed nozzle that allows simultaneous hole creation and insulation dispensing, with expandable wings or offset collars to navigate pre-existing insulation, an enhancement port for varied insulation types, and a nozzle sheath to prevent dripping, enabling efficient injection of multiple insulation types and configurations with a single nozzle.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a conventional nozzle is used for insulation injection, then the nozzle can be simple in design, but it becomes blocked by pre-existing insulation material and cannot penetrate through panels effectively
Solution Approach 1:
The nozzle is divided into functionally distinct segments: a penetration portion with a pointed tip for creating panel holes, a dispensing portion with multiple ports for insulation delivery, and an expansion portion with wings for cavity navigation. This segmentation allows each portion to be optimized for its specific function, preventing blockages while maintaining structural integrity.
Solution Approach 2:
Instead of having the nozzle tip dispense insulation directly, the design inverts the approach by having the tip first create the penetration hole, then the insulation material flows through separate dispensing ports located further along the nozzle shaft. This inversion prevents pre-existing insulation from blocking the dispensing path.
2Productivity
If multiple panel holes are drilled for insulation injection, then insulation can be injected into cavities, but the process becomes time-consuming and costly
Solution Approach 1:
The nozzle combines three functions into a single tool: panel penetration (via the pointed tip), insulation dispensing (via multiple ports), and cavity navigation (via expansion wings). This merging eliminates the need for separate drilling operations and multiple tool changes, significantly improving productivity.
Solution Approach 2:
The nozzle is designed as a universal tool that can handle multiple tasks: creating entry holes in panels, navigating through cavities with pre-existing insulation, and dispensing different types of insulation materials. This multi-functionality reduces the overall time required for insulation injection projects.
3Adaptability or versatility
If a single nozzle is used for different insulation types and cavity configurations, then device versatility increases, but the nozzle design becomes more complex
Solution Approach 1:
The nozzle incorporates expandable wings that can dynamically adjust their configuration based on cavity requirements. The wings can be collapsed for tight spaces and expanded for larger cavities, allowing a single nozzle design to adapt to various cavity configurations without requiring multiple specialized nozzles.
Solution Approach 2:
The nozzle is designed with universal features including multiple dispensing ports that can accommodate different insulation types (foam, granular, fibrous), adjustable expansion wings for various cavity sizes, and a pointed tip that works with different panel materials. This universality allows one nozzle to replace multiple specialized tools.
4Object-affected harmful factors
If insulation is injected without a drip prevention mechanism, then the injection process is simple, but excess insulation drips onto panel surfaces causing damage
Solution Approach 1:
The nozzle incorporates a flexible drip sheath that acts as a protective covering around the dispensing ports. This sheath prevents excess insulation material from dripping onto external panel surfaces while allowing the insulation to be delivered into the cavity. The flexible material can conform to different nozzle configurations and can be easily removed or adjusted as needed.
Data Source
AI summary
A thermal insulation injection gun includes a pointed nozzle that prevents blocking of the nozzle by a distal panel of a building cavity and/or by pre-existing insulation within the cavity. In embodiments, the pointed nozzle can be pressed through a panel, thereby forming the injection hole. An enhancement port can be provided through which an enhancing material such as a carrier fluid, particulate or fibrous insulating material, a binder, or a fire retardant can be added and mixed with the insulating material. Embodiments include expanding nozzle wings that can compress pre-existing insulation to create a space on a proximal or distal side thereof for injecting the insulation. A compressible sheath installed over the nozzle can prevent dripping of excess insulation from the panel hole. Exchangeable collars can be used to fix an insertion depth of the nozzle and/or to block selected lateral dispensing ports of the nozzle.