Respiratory Blower Layout With Upstream Air Temperature Control
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Solution Overview
Problem
Existing blower devices for respiratory protection systems are not compact and do not effectively integrate temperature control, leading to discomfort and inefficiency in airflow management.
Innovation Solution
A blower device with a thermal unit positioned along the airflow upstream of the fan, integrated within a common housing unit, which can cool or heat the airflow, and includes a compact design for wear on the body, featuring a fan and thermal unit arranged side by side with defined airflow channels.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If a blower device is designed with separate temperature control components, then temperature control function is achieved, but device size and complexity increase
Solution Approach 1:
The patent merges the temperature control unit with the blower device into a single integrated assembly. The thermal unit is positioned upstream of the fan within the same housing, allowing temperature control and airflow generation to occur in a unified device rather than as separate components, thereby reducing overall system complexity while maintaining both functions.
Solution Approach 2:
The housing unit serves multiple functions simultaneously: it contains the fan for airflow generation, houses the thermal unit for temperature control, and provides defined channels for airflow guidance. This multi-functional design eliminates the need for separate structural components for each function, reducing device complexity.
2Ease of manufacture
If thermal unit and fan are arranged separately, then ease of manufacturing is improved, but device volume increases
Solution Approach 1:
The thermal unit is nested within the housing unit in such a way that it occupies space upstream of the fan but within the overall device envelope. The defined channels are integrated into the housing structure, allowing airflow to be guided through the thermal unit and then to the fan without requiring additional external ducting or space, thus minimizing device volume while maintaining manufacturability.
3Volume of moving object
If blower device is made compact, then portability and comfort are improved, but airflow management efficiency decreases
Solution Approach 1:
The housing unit provides defined channels that create localized optimized airflow paths between the thermal unit and fan. These channels are specifically shaped to guide airflow efficiently through the compact device, ensuring that despite the reduced overall size, the local airflow management maintains high efficiency through proper channel geometry and flow direction control.
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 provides a compact, comfortable blower device that effectively temperature-controls airflow, eliminating the need for room cooling and enabling cooling of breathing air in an open space, while maintaining a compact and efficient design.
Implementation Method 1
a thermal unit (18a, 18b, 18c, 18d), which, in at least one operating state, is designed to temperature-control the airflow (16a, 16b, 16c, 16d)
Data Source
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AI summary
The invention relates to a blower device for a respiratory protection system (10a), comprising a fan (14a; 14b; 14c; 14d) for generating an airflow (16a; 16b; 16c; 16d). It is proposed that the blower device includes a thermal unit (18a; 18b; 18c; 18d) which, in at least one operating state, is designed to change the temperature of the airflow (16a; 16b; 16c; 16d) and which is arranged along the airflow (16a; 16b; 16c; 16d) upstream of the fan (14a; 14b; 14c; 14d).