Pellet Hopper Angled Bottom Panels Clog Prevention
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Solution Overview
Problem
Conventional pellet grills often experience clogging issues in the hopper and auger systems, leading to disrupted fuel flow and reduced cooking performance, requiring users to manually unclog the system, which is time-consuming and inconvenient.
Innovation Solution
A pellet hopper assembly with smooth pellet drop features and angled bottom panels to enhance evacuation efficiency, reducing the incidence of clogging and allowing for uninterrupted fuel flow into the auger system, thereby maintaining consistent heat and smoke production.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional hopper and auger systems are used, then the structure is simple, but fuel pellets frequently clog and get stuck causing disrupted fuel flow
Solution Approach 1:
The hopper bottom incorporates curved surfaces and rounded transitions instead of sharp angles, creating smooth pellet flow paths that prevent clogging. The curved geometry eliminates dead zones where pellets can get stuck, ensuring continuous fuel delivery to the auger system.
Solution Approach 2:
The invention introduces a multi-dimensional approach by adding vertical wall panels that extend downward from the hopper bottom, creating a three-dimensional flow channel structure. This dimensional addition guides pellets through a controlled path and prevents them from getting trapped in two-dimensional flat surfaces.
2Productivity
If manual unclogging is performed, then the system can be restored, but it takes time and causes user frustration
Solution Approach 1:
The hopper design is self-service in that it automatically prevents clogging through its engineered geometry. The smooth curved surfaces and vertical wall panels work continuously without user intervention to maintain pellet flow, eliminating the need for manual unclogging operations.
Solution Approach 2:
The hopper structure performs preliminary action by preventing clogs before they occur. The design proactively addresses potential flow problems through its geometry, stopping clogging issues before they disrupt fuel delivery or require user intervention.
3Temperature
If fuel pellets are not fed at appropriate rate, then heat and smoke production is insufficient, but increasing feed rate causes clogging
Solution Approach 1:
The hopper design dynamically adapts to varying pellet feed rates through its geometric features. The curved surfaces and vertical walls maintain effective flow at both low and high feed rates, allowing the system to adjust fuel delivery to match cooking temperature requirements without causing clogging.
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 solution reduces the frequency of temperature loss and eliminates the need for users to restart the grill due to pellet evacuation failures, ensuring consistent cooking performance and user convenience.
Implementation Method 1
A pellet hopper assembly with smooth pellet drop features and angled bottom panels to enhance evacuation efficiency
Data Source
Figure 1A
Figure 1B
Figure 1C
AI summary
A pellet hopper for use in a pellet grill includes a first bottom panel, a second bottom panel, and a third bottom panel. Each bottom panel has an inner edge that partially defines a pellet evacuation opening. The first, second, and third bottom panels form respective first, second, and third nonzero angles relative to a horizontal plane. In this way, each bottom panel tilts downward toward the pellet evacuation opening.