Venturi Gas Burner Regulator Reference Line Design
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing gas burner regulating devices can experience gas leakage into the environment due to pressure fluctuations, leading to false safety alarms and unnecessary maintenance when the pressure in the gas line exceeds the reference pressure, causing gas to be drawn towards the sensor and potentially into the environment.
Innovation Solution
A regulating device with a Venturi nozzle mixing system, where the sensor's reference point is connected via a line to the Venturi nozzle downstream of the mixing region, ensuring that any gas diverted from the sensor is redirected back into the system, preventing environmental leakage and incorporating a dual-chamber design with a filter to protect the sensor from ambient impurities.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If the sensor's reference point acts directly on the environment (ambient pressure), then the device structure is simple, but gas may escape into the environment during pressure fluctuations
Solution Approach 1:
A reference pressure line is introduced as an intermediary element connecting the sensor's reference point to the Venturi nozzle's downstream region. This intermediary channel ensures that the reference pressure is taken from a location where gas cannot escape to the environment, while still providing the necessary reference pressure to the sensor for accurate differential pressure measurement.
Solution Approach 2:
The reference pressure line is nested within the existing device structure, utilizing the space between the mixing region and the environment. The reference pressure line is positioned downstream of the mixing region where the gas/air mixture already exists, creating a nested configuration that prevents gas leakage while maintaining structural compactness.
2Ease of operation
If the reference pressure is taken from the environment, then ambient pressure is readily available, but gas may be drawn towards the sensor during pressure fluctuations causing false safety alarms
Solution Approach 1:
The reference pressure line serves as an intermediary that provides ambient pressure reference to the sensor while preventing direct communication between the gas line and the environment. This intermediary channel ensures that the reference pressure is taken from a controlled location downstream of the mixing region, eliminating the risk of gas being drawn towards the sensor during pressure fluctuations.
3Object-affected harmful factors
If the reference point acts on a device connected to the Venturi nozzle downstream of the mixing region, then gas leakage is prevented, but the device complexity increases
Solution Approach 1:
The reference pressure line is designed as a simple intermediary channel that taps into the existing gas/air mixture flow downstream of the mixing region. This minimal intervention approach provides the necessary reference pressure while adding only a small auxiliary component to the overall device structure.
Solution Approach 2:
The reference pressure line serves multiple functions: it provides the reference pressure for the sensor, prevents gas leakage to the environment, and utilizes the existing gas/air mixture flow downstream. This multi-functionality reduces the need for additional separate systems and minimizes overall device complexity.
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
This solution prevents any gas from escaping into the environment during pressure fluctuations, eliminating false safety alarms and reducing unnecessary maintenance by ensuring gas is safely redirected within the system, while also protecting the sensor from ambient contamination.
Implementation Method 1
the mixing device is formed as a Venturi nozzle, wherein the gas line leads to a mixing region (13) of the Venturi nozzle (10) in which the gas flow (12) and the combustion air flow (11) are mixed, forming a gas/air mixture (14)
Implementation Method 2
A signal for adjusting the gas valve is generated dependent upon the measurement signal of the sensor, wherein the sensor (18) acts on the gas line (15) by a measuring point (19) in order to detect the pressure which prevails in the gas line (15), wherein a reference pressure prevails at a reference point (20) of the sensor
Data Source
AI summary
Regulating device for gas burners for providing a gas/air mixture, with a mixing device for mixing a gas flow with a combustion air flow to provide the gas/air mixture, wherein at least one gas valve is positioned in a gas line which conducts the gas flow, which is adjusted in dependence upon a measurement signal of an electric or electronic sensor, wherein the sensor determines the differential pressure between the gas line and a reference pressure. The mixing device may be formed as a Venturi nozzle, in which the gas flow and the combustion air flow are mixed, wherein the reference pressure for the sensor is a device in which the reference pressure prevails, and the device is connected via a connecting line to the Venturi nozzle downstream of the mixing region of the Venturi nozzle.