Rotary Sampling Valve for Multi-Point Gas Detection
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Solution Overview
Problem
Conventional multi-point gas or smoke sampling systems require multiple rotary valves, leading to high costs and space requirements due to the need for individually operated valves for each sampling tube, making them inefficient for large-scale monitoring.
Innovation Solution
A single rotary valve mechanism with multiple sampling chambers that allows simultaneous or sequential connection of multiple inlet ports to a common outlet, enabling efficient monitoring of a large number of sampling tubes through different operation modes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If multiple rotary valves are used to monitor each sampling tube individually, then each tube can be monitored independently, but the cost and space requirements become prohibitive
Solution Approach 1:
The patent combines multiple sampling tube connections into a single rotary valve by providing multiple inlet ports that can be sequentially connected to a common outlet through rotation. This merging approach eliminates the need for multiple separate valves, reducing system complexity and space requirements while maintaining the capability to monitor each sampling tube independently.
Solution Approach 2:
The rotary valve is designed with universal functionality to handle multiple sampling tubes through a single device. The valve can sequentially connect any of the multiple inlet ports (each connected to a different sampling tube) to the common outlet, making the single valve capable of performing the function of multiple individual valves.
2Reliability
If multiple rotary valves are used for each sampling tube, then individual monitoring is achieved, but manufacturing costs increase
Solution Approach 1:
By merging multiple valve functions into a single rotary valve with multiple inlet ports, the manufacturing cost is reduced. Instead of producing and installing multiple separate valves, only one valve needs to be manufactured and installed, while still achieving individual monitoring of each sampling tube through sequential connection.
Solution Approach 2:
The single rotary valve is designed with multi-functionality to replace multiple specialized valves. Each inlet port can be selectively connected to the common outlet, providing universal monitoring capability across all sampling tubes without requiring multiple dedicated valves, thereby reducing manufacturing costs.
3Area of stationary object
If a single rotary valve with multiple inlet ports is used, then space requirements are reduced, but the valve mechanism becomes more complex
Solution Approach 1:
The patent merges multiple valve functions into a single rotary valve structure, significantly reducing the space required for valve installation. Although the internal mechanism has multiple inlet ports and rotation capabilities, the external footprint is minimized by consolidating what would have been multiple separate valve units into one integrated device.
Solution Approach 2:
The rotary valve utilizes rotational movement to achieve multiple connections in a compact space. By adding the dimension of rotation to the valve mechanism, multiple inlet ports can be sequentially brought into alignment with the common outlet without requiring multiple separate valve bodies, thus reducing spatial requirements while managing complexity through motion.
4Ease of operation
If individually operated valves are used for each sampling tube, then simple valve operation is achieved, but the system requires more components
Solution Approach 1:
The patent merges the operation of multiple valves into a single rotary valve mechanism. Instead of operating multiple separate valves individually, the system uses one rotary valve with multiple inlet ports that can be sequentially connected to the common outlet through rotation, reducing the component count while maintaining operational simplicity through centralized control.
Solution Approach 2:
The rotary valve provides universal operation for all sampling tubes through a single device. The same rotation mechanism serves to connect any inlet port to the common outlet, making the valve operation simple and unified rather than requiring separate control for each valve. The multi-functional design allows one operation mechanism to handle all sampling tube connections.
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 reduces manufacturing costs and space requirements by enabling connection to more sampling tubes with a single valve, allowing for efficient detection and localization of gas or smoke sources while minimizing false alarms.
Implementation Method 1
a rotary sampling valve having a plurality of sampling chambers, each chamber connecting a plurality of inlet ports to a respective common outlet
Implementation Method 2
Air is drawn in through the sampling holes and subsequently along the pipe or pipe network (2) by means of an aspirator or fan (7)
Data Source
AI summary
A rotary sampling valve for a multi-point aspirated gas or smoke detection system, the rotary sampling valve including multiple sets of inlet ports, whereby, in a first operation mode, air is drawn via all inlet points simultaneously and, in a second operation mode, air is drawn via one inlet port from each set of inlet ports simultaneously. A multi-point aspirated gas or smoke detection system including a rotary sampling valve is also described.