Volume Flow Controller with Display-Integrated Parameter Selection
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Solution Overview
Problem
Existing volume flow controllers for air-conditioning and ventilation systems are complex to operate due to the need for external scales on control elements for parameter selection and adjustment, which complicates the process of setting and configuring control and configuration parameters.
Innovation Solution
A pushbutton, touch switch, or non-contact control element is used to advance and select parameters displayed on a scale, with an endlessly rotatable rotary knob for adjusting parameter values, eliminating the need for external scales on the housing and allowing intuitive gesture-based operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If external scales are provided on control elements for parameter selection and adjustment, then parameter setting can be performed, but the device complexity and operational complexity increase
Solution Approach 1:
The patent combines the scale markings directly with the display element, integrating the parameter selection interface into the display itself. The display shows both the visual representation and the scale markings in one unified component, eliminating the need for separate external scales on the housing while maintaining full parameter selection and adjustment functionality
Solution Approach 2:
The patent introduces a light source as an intermediary element that projects the scale markings onto the display surface. This light-based intermediary allows the scale to be integrated into the display without adding physical external components, resolving the contradiction between operational ease and device complexity
2Ease of operation
If rotary switches and rotary knobs with external scales are used for control, then parameter selection and adjustment are possible, but the ease of operation is reduced due to the complexity of the control interface
Solution Approach 1:
The patent merges the scale markings with the display element, creating a unified interface where parameter selection and adjustment can be performed directly through the display without requiring separate rotary switches or knobs with external scales. This integration simplifies the control interface while maintaining full functionality
Solution Approach 2:
The patent extracts the scale functionality from separate physical control elements (rotary switches and knobs) and integrates it directly into the display. This extraction eliminates the need for complex external control mechanisms while preserving the ability to select and adjust parameters
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
Simplifies the operation of volume flow and pressure regulators by enabling intuitive parameter selection and adjustment through a display-based interface, improving usability and reducing operational complexity while maintaining precise control over airflow settings.
Implementation Method 1
a differential pressure sensor for measuring a differential pressure prevailing in the flow channel
Data Source
Figure 1~2
AI summary
In a volume flow controller (1), in particular for air conditioning and ventilation systems, for adjusting a control flap (2) which is adjustably mounted inside a flow duct (3), with a differential pressure sensor (5) for measuring a pressure prevailing in the flow duct (3). differential pressure, with a control unit (6) which adjusts the control valve (2) in dependence on the pressure measured by the pressure sensor (5) in order to set a target volume flow in the flow channel (3), with a first control element (7) for selecting one of several Parameters (8a-8h), in particular control and/or configuration parameters, and a second operating element (9) for setting the value of the respectively selected parameter, and with a display (10) for showing the currently set value of the respectively selected parameter, According to the invention, the first control element (7) is a push button, a touch switch, a touch control panel or a non-contact control element for switching on of the parameter shown in the display (10).