Multi-Compartment HNB Capsule With Independent Heater Sections
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Solution Overview
Problem
Existing heat-not-burn aerosol-generating devices face challenges in efficiently heating multiple types of aerosol-forming substrates without causing self-sustaining combustion, particularly when different substrates require different heating profiles.
Innovation Solution
A capsule design with multiple internal compartments and a heating assembly extending into each compartment, allowing independent heating of substrates, along with a heating assembly that includes heater sections and electrical contacts for each compartment, enabling precise temperature control and aerosol generation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple aerosol-forming substrates are placed in a single compartment, then the device can process multiple substrate types, but the heating control becomes difficult and combustion may occur
Solution Approach 1:
The capsule is divided into multiple separate compartments (first compartment, second compartment, etc.), each containing a different aerosol-forming substrate. Each compartment has its own dedicated heater section, allowing independent temperature control for each substrate type. This segmentation prevents combustion by enabling precise, substrate-specific heating profiles while maintaining the ability to process multiple substrate types simultaneously.
2Device complexity
If a single heater is used for multiple compartments, then the device structure is simplified, but temperature control precision is lost
Solution Approach 1:
The heating assembly is segmented into multiple independent heater sections (first heater section, second heater section, etc.), with each section corresponding to a specific compartment. Each heater section can be independently controlled by the control circuit, enabling precise temperature control for each compartment while maintaining a relatively simple overall heater structure that can be manufactured as an integrated component.
3Productivity
If multiple compartments are heated simultaneously, then productivity increases, but energy consumption increases
Solution Approach 1:
The heating system is divided into independent heater sections that can be controlled separately. The control circuit can selectively activate only the heater sections corresponding to compartments containing aerosol-forming substrates, rather than heating all compartments simultaneously. This enables simultaneous processing of multiple substrates when needed while reducing energy consumption by activating only necessary heater sections.
Solution Approach 2:
The heating system transitions from a static all-or-nothing heating mode to a dynamic selective heating mode. The control circuit dynamically adjusts which heater sections are active based on the presence and requirements of specific substrates in each compartment, optimizing both productivity and energy consumption by matching heating capacity to actual needs.
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 simultaneous and efficient heating of different aerosol-forming substrates within the device, ensuring that each compartment is heated to the optimal temperature without combustion, thereby enhancing the versatility and safety of the aerosol-generating process.
Implementation Method 1
a heating assembly within the housing and extending into each of the plurality of internal compartments, the heating assembly including a plurality of heater sections and electrical contacts for the plurality of heater sections
Implementation Method 2
heating a plant material to a temperature that is sufficient to release constituents of the plant material while keeping the temperature below its ignition temperature so as to avoid a self-sustaining burning or a self-sustaining combustion of the plant material
Data Source
AI summary
A capsule for an aerosol-generating device may include a housing and a heating assembly within the housing. The housing defines a plurality of internal compartments, a plurality of inlet openings, and a plurality of outlet openings. Each of the plurality of internal compartments contains an aerosol-forming substrate. The heating assembly within the housing extends into each of the plurality of internal compartments. The heating assembly includes a plurality of heater sections and electrical contacts for the plurality of heater sections. A device body is configured to receive the capsule, and to supply an electric current to the plurality of heater sections of the heating assembly to sequentially heat the aerosol-forming substrate within the plurality of internal compartments of the capsule to generate an aerosol.