Mattress Microclimate Control Using Airflow Pads and Thermal Feedback
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Solution Overview
Problem
Conventional bed systems lack effective microclimate control, leading to discomfort due to temperature and humidity imbalances, which can disrupt sleep quality.
Innovation Solution
A bed system with a microclimate control subsystem that includes airflow pads and a fan assembly to condition air, providing heated or cooled air to the mattress, and a thermal module with temperature sensors for closed-loop control, ensuring precise temperature management and humidity regulation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If conventional bed systems are used without microclimate control, then the structure remains simple and cost-effective, but temperature and humidity imbalances occur leading to discomfort and disrupted sleep quality
Solution Approach 1:
The bed system is segmented into distinct functional layers: an airflow insert layer with high airflow capability positioned below the foam layer, and a separate microclimate control subsystem. This segmentation allows the airflow function to be isolated in a dedicated layer while maintaining the simplicity of other bed components.
Solution Approach 2:
The airflow insert is nested within the bed structure by positioning it below the foam layer and above the foundation, creating a layered configuration where each layer serves a specific function. The airflow insert is effectively embedded within the bed's structural hierarchy without requiring complete redesign of the entire system.
2Ease of operation
If airflow pads are added to enable microclimate control, then temperature management improves, but the device complexity and manufacturing difficulty increase
Solution Approach 1:
The airflow insert is constructed from porous or permeable material that allows air to pass through freely. This material choice simplifies the manufacturing process compared to creating complex mechanical airflow mechanisms, while still achieving the desired high airflow capability for microclimate control.
Solution Approach 2:
The airflow insert acts as an intermediary layer between the foam mattress layer and the foundation, mediating airflow through the bed structure. This intermediary approach allows microclimate control to be achieved without directly modifying the foam layer or foundation, simplifying manufacturing of each individual component.
3Measurement precision
If air is suctioned from the mattress to cool it, then temperature control precision improves, but energy consumption increases
Solution Approach 1:
The system utilizes the occupant's own body heat and breath to drive airflow through the bed. By positioning the airflow insert to work with natural convection currents created by body heat, the system reduces the energy required for active air suction while maintaining effective temperature control.
Solution Approach 2:
The microclimate control subsystem can operate in periodic cycles, alternating between active cooling phases and passive airflow phases. During passive phases, the system allows natural convection to maintain airflow, reducing energy consumption while still achieving adequate temperature regulation over time.
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 system effectively maintains a comfortable microclimate, enhancing sleep quality by precisely controlling temperature and humidity, while minimizing disruption to the mattress's comfort and durability.
Implementation Method 1
A bed system with a microclimate control subsystem that includes airflow pads and a fan assembly to condition air, providing heated or cooled air to the mattress
Implementation Method 2
The heating unit may be electrically controlled to increase temperature
Implementation Method 3
The air controller may be configured to move air through the airflow insert pad and through the first layer to decrease a temperature at the top surface of the first layer
Data Source
Figure 8A
Figure 8B
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AI summary
A bed system includes microclimate control capabilities for providing quality sleep experience. The bed system can include a microclimate control subsystem configured to supply conditioned air (e.g., heated or cooled air) to a mattress, or draw ambient air from the mattress, to achieve a desired temperature at the top of the mattress. Utilizing supply of conditioned air to provide air at desired temperature to the mattress system, or utilizing air suction to drain heat away from the mattress system, can provide precise microclimate control at the mattress, thereby permitting conformable sleep.