Pellet stove
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Solution Overview
Problem
Existing pellet heating devices are limited by installation within structures, reducing usable space, requiring indoor maintenance, posing safety and pollution risks, and being difficult to transport and install, with ash disposal issues and high installation costs.
Innovation Solution
A portable pellet stove designed for outdoor use, featuring a compartmentalized or monobloc container with easy access, wheels for transport, air and smoke ducts, an automatic cleaning system, and programmable operation, allowing easy installation and maintenance, and thermal insulation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If pellet heating devices are installed inside buildings, then heating function is provided, but usable space is reduced and maintenance creates dirt and inconvenience
Solution Approach 1:
The patent extracts the combustion chamber and pellet burning system from the indoor environment by providing an outdoor installation configuration. The stove is designed to be positioned externally with only essential connections (flue, air intake, heating element) penetrating the building envelope, thereby removing the source of indoor dirt, maintenance inconvenience, and space occupation while preserving the heating function through thermal transfer.
2Reliability
If pellet heating devices are installed inside buildings, then heating function is provided, but safety and air pollution risks increase
Solution Approach 1:
The patent removes the combustion process and associated harmful emissions from the indoor environment by enabling outdoor installation. The combustion chamber, pellet feed system, and exhaust flue are positioned externally, eliminating indoor air pollution risks while maintaining heating effectiveness through controlled thermal transfer to the building.
Solution Approach 2:
The outdoor installation creates a separated environment where combustion occurs in open air with proper ventilation and exhaust pathways, effectively isolating harmful byproducts (smoke, particulates, CO) from the occupied indoor space while maintaining safe operational conditions.
3Stability of the object's composition
If pellet heating devices are made fixed for indoor use, then heating stability is ensured, but transportability and adaptability are reduced
Solution Approach 1:
The patent introduces dynamic characteristics to the previously static indoor stove by providing multiple installation configurations (indoor and outdoor options) and mobile mounting capabilities. The stove can be repositioned, relocated, or moved between indoor and outdoor positions as needed, transforming it from a fixed installation to a flexible, adaptable heating solution that maintains operational stability in various locations.
Solution Approach 2:
The patent makes the heating device universal by designing it to function effectively in multiple environments (indoor and outdoor) and multiple installation scenarios (permanent and temporary). This multi-functionality allows the same device to adapt to different building types, locations, and user needs without compromising heating performance.
4Device complexity
If pellet heating devices are designed for indoor use, then combustion control is simplified, but installation and maintenance complexity increases
Solution Approach 1:
By extracting the complex combustion control systems (pellet feeding mechanisms, ignition systems, ash removal systems) to an outdoor location, the patent simplifies indoor installation requirements. The indoor portion only requires basic connections for heat transfer, air intake, and flue exhaust, dramatically reducing installation complexity and maintenance difficulty while preserving combustion control functionality outdoors.
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
Enables flexible installation and use in various structures, reduces maintenance needs, enhances safety and cleanliness, and optimizes heating efficiency while complying with regulations, making it suitable for diverse environments.
Implementation Method 1
a burner (23) capable of burning different types of solid fuels
Implementation Method 2
a heat exchanger (25) arranged inside the container (12) and in communication with the burner (23)
Implementation Method 3
The stove is provided with means for thermal and/or weather insulation
Data Source
Figure 1A~1B
Figure 1C~2B
Figure 3~4
AI summary
A pellet stove (100) configured to heat a fluid present in an indoor environment, such as a building or structure (1), comprising a base (11), wherein is placed a thermally insulated container (12), inside of which are present a device for loading and releasing the pellets, a burner (23), one or more electrical resistors (26) and a heat exchanger (25). The container (12) has externally one or more doors (13) for loading the pellets and/or for access to the interior and a set of wheels or rollers (16) to enable the pellet stove (100) to be transported by hand. The container (12) is installed in an external room adjacent to the interior room and has - an inlet duct (170) for the introduction of air from the external environment into the stove (100), - an inlet duct (171), placed in communication with the indoor room, from which air is taken and introduced into the stove (100), - an outlet duct (172), placed in communication with the interior room, from which air is drawn from the stove (100) and fed into the interior room - an exhaust duct (173) for the exhaust fumes of the pellet stove (100).