Variable Speed Loosefill Blowing Machine Control
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Solution Overview
Problem
Existing loosefill insulation blowing machines are not user-friendly, particularly in terms of variable flow rate control for efficient distribution of compressed loosefill insulation into insulation cavities, which can lead to clogging and uneven distribution.
Innovation Solution
A loosefill blowing machine with a shredding chamber and blower system that allows for variable rotational speeds of shredders and blower operation on a single 15 ampere, 110 volt power supply, enabling adjustable flow rates of loosefill insulation and airstream for improved distribution efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the loosefill blowing machine uses fixed flow rates for shredders and blower, then the machine structure is simple, but the distribution efficiency is poor and clogging occurs in tight spaces
Solution Approach 1:
The patent applies variable speed control to both the shredders and blower, allowing their rotational speeds to be adjusted dynamically. This enables the flow rates of loosefill insulation and airstream to be varied according to different insulation cavity conditions, thereby improving distribution efficiency and preventing clogging without requiring a fundamentally complex machine structure
Solution Approach 2:
The patent changes the operational parameters (rotational speeds) of the shredders and blower to optimize performance. By adjusting these parameters, the system can adapt to different working conditions and achieve better distribution efficiency while maintaining a relatively simple machine structure
2Ease of operation
If the machine operates on multiple power supplies for variable speeds, then the flow rate control is precise, but the ease of operation is reduced
Solution Approach 1:
The patent makes the single 15 ampere, 110 volt a.c. power supply serve multiple functions by using it to drive both the shredders and blower with variable speeds. This universal power supply approach simplifies operation (user only needs one power outlet) while still enabling precise flow rate control through variable speed operation of multiple components
3Adaptability or versatility
If the shredders and blower operate at high speeds continuously, then the productivity is high, but the adaptability to different insulation cavity conditions is poor
Solution Approach 1:
The patent enables dynamic adjustment of the shredders' and blower's rotational speeds, allowing the system to adapt to different insulation cavity conditions. Users can optimize the balance between productivity and adaptability by adjusting speeds according to specific application requirements, whether dealing with tight spaces or open cavities
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 machine provides variable flow rates of loosefill insulation and airstream, enhancing distribution efficiency and preventing clogging, especially in tight spaces, by adapting to different insulation cavity conditions.
Implementation Method 1
The discharge mechanism is configured for distributing the conditioned loosefill insulation from a machine outlet in an airstream provided by a blower
Implementation Method 2
a shredding chamber having an outlet end and a plurality of shredders configured to condition the loosefill insulation
Data Source
AI summary
A machine for distributing loosefill insulation from sources of compressed loosefill insulation is provided. The machine includes a shredding chamber having an outlet end and a plurality of shredders configured to condition the loosefill insulation. The plurality of shredders is configured to operate at variable rotational speeds. A discharge mechanism is mounted at the outlet end of the shredding chamber. The discharge mechanism is configured for distributing the conditioned loosefill insulation into an airstream provided by a blower. The blower is configured to operate at variable rotational speeds. The plurality of shredders, the discharge mechanism and the blower are configured to operate on a single 15 ampere, 110 volt a.c. power supply. The variable rotational speeds of the plurality of shredders are configured to provide variable flow rates of the loosefill insulation and the variable rotational speeds of the blower are configured to provide variable flow rates of the airstream.