Pellet Feeding Device With Coupled Screws For Wide Flame
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Solution Overview
Problem
Existing pellet feeding devices for heating equipment are unable to control the width of the flame generated in the burner, limiting the design of heating equipment to narrower structures and failing to replicate the wide, traditional fireplace flame.
Innovation Solution
A feeding device with multiple screws and feeding pipes arranged alongside each other, connected by a motion transmission element, ensures pellets are fed uniformly across a wide area of the burner, generating a flame that extends horizontally.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Length of moving object
If a single screw is used to feed pellets, then the device structure is simple, but the flame width is limited
Solution Approach 1:
The feeding device is divided into multiple independent feeding pipes, each containing a screw. This segmentation allows pellets to be fed through multiple parallel channels, creating a wider distribution pattern on the burner surface and generating a wider flame, while each individual screw maintains structural simplicity.
Solution Approach 2:
Multiple feeding pipes with screws are combined and arranged parallel to each other, with their outlet mouths positioned at different locations along the burner. This merging of multiple feeding channels enables simultaneous pellet delivery across a wider area, achieving wide flame generation without excessive structural complexity.
2Area of stationary object
If multiple screws are used to feed pellets, then the flame width increases, but the device complexity increases
Solution Approach 1:
A motion transmission element acts as an intermediary mechanism connecting the multiple screws. This intermediary component synchronizes the rotation of all screws, ensuring coordinated pellet feeding across all channels while maintaining a relatively simple and compact transmission structure.
Solution Approach 2:
The motion transmission element serves multiple functions simultaneously: it synchronizes the rotation of all screws, transmits rotational motion from a single drive source to multiple screws, and maintains consistent feeding rates across all channels. This multi-functionality reduces overall system complexity despite using multiple screws.
3Ease of operation
If pellets are fed to a limited section of the burner, then the feeding control is simple, but the flame horizontal extension is limited
Solution Approach 1:
The burner surface is segmented into multiple feeding zones, with each feeding pipe targeting a specific section. This segmentation allows pellets to be distributed across the entire burner width rather than concentrated in one location, creating a horizontally extended flame while maintaining simple control through independent screw rotation.
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 allows for the generation of a wide, horizontal flame in pellet heating equipment, enhancing versatility and enabling the creation of equipment of various shapes and sizes while maintaining a simple and cost-effective design.
Implementation Method 1
pellet transfer means to move forward in a controlled way predetermined quantities of pellets along at least one feeding pipe extending from the load compartment to the combustion chamber. The transfer means comprise a plurality of screws
Implementation Method 2
Screws are mutually coupled by means of a motion transmission element so as to rotate simultaneously and define the movement of the pellet
Implementation Method 3
a combustion chamber featuring a brazier inside which flames are generated thanks to the pellet combustion
Data Source
Figure 1
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AI summary
A feeding device for pellet heating equipment, comprising: a pellet load compartment (2); a combustion chamber (4) having a brazier (5) inside which a flame is generated by the combustion of the pellet; and transfer means (6) of the pellet to move, in a controlled manner, predefined amounts of pellet along at least a feeding pipe (7) extending from the load compartment (2) to the combustion chamber (4); the transfer means (6) comprise a plurality of screws (8) each of which developing within a respective feeding pipe (7); said screws (8) being mutually coupled by means of a motion transmission element (9) for simultaneously rotating the same screws (8) and define the movement of the pellet.