Ventilation fan and ventilation system
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Solution Overview
Problem
Conventional ventilation fans require multiple sensor types and configurations, leading to increased production and management costs due to the need for different sensors and frequent replacements, resulting in inefficiencies and higher expenses.
Innovation Solution
A modular ventilation fan system with a body unit and interchangeable sensor modules, where the sensor module includes an indoor environment detecting sensor and a module controller that outputs detection information to the fan controller, allowing for flexible sensor configurations and reduced costs by enabling easy replacement and common fan controller specifications.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple types of sensors are installed to detect different indoor environments, then the ventilation fan can adapt to various installation environments, but the production cost and management cost increase
Solution Approach 1:
The sensor module is segmented from the main fan body, allowing it to be independently selected and replaced based on installation environment requirements. This segmentation enables the fan body to remain standardized while only the sensor module varies, reducing production costs through standardized manufacturing of the common fan body components.
Solution Approach 2:
The fan body is designed with universal compatibility to accommodate different sensor modules through a standardized mounting structure. This universality allows a single fan body design to serve multiple installation environments by simply changing the sensor module, thereby reducing the need to manufacture multiple fan body variants.
2Adaptability or versatility
If the sensor type must be changed after installation, then the ventilation fan can adapt to new environments, but the whole ventilation fan must be replaced
Solution Approach 1:
The sensor module is designed as a separable component that can be independently removed and replaced without affecting the fan body. This segmentation allows users to change only the sensor module when sensor type needs to be changed, significantly reducing replacement costs compared to replacing the entire ventilation fan.
Solution Approach 2:
The mounting structure for the sensor module is designed to be dynamically adjustable and easily detachable, enabling quick replacement of the sensor module. This dynamic design facilitates maintenance and adaptation without requiring complex disassembly or professional service intervention.
3Adaptability or versatility
If different sensor configurations are used for different environments, then the ventilation fan can be optimized for specific uses, but the device complexity increases
Solution Approach 1:
The sensor module is segmented as a standalone component with its own mounting structure and connection interface. This segmentation simplifies the overall system by allowing the fan body to maintain a simple, standardized design while the sensor module handles the complexity of different sensor types and configurations.
Solution Approach 2:
The fan body incorporates a universal mounting structure that can accommodate various sensor modules through a standardized interface. This universality reduces device complexity by eliminating the need for multiple specialized mounting structures, thereby simplifying the overall system architecture while maintaining configuration flexibility.
Data Source
AI summary
A ventilation fan includes a body unit, which has a fan disposed in a body case and a fan controller operable to control an air volume of the fan. The ventilation fan also includes a sensor module having an indoor environment detecting sensor and a module controller operable to control a detecting operation of the indoor environment detecting sensor. The body unit has a module mount on which the sensor module is mounted and another sensor module can be mounted in place of the sensor module. The module mount is connected to the fan controller. The module controller outputs detection information obtained based on a detection result of the indoor environment detecting sensor to the fan controller, which in turn controls the air volume of the fan based on the detection information inputted thereto.